Pumps

Mar 09

A Guide to Chemical Dosing Pumps

By Antony Muya | Pumps | No Comments

Chemical dosing pumps can inject steam, gases, or water with a finely measured quantity of chemicals or other substances. The standard components of a chemical dosing pump include a control panel, storage tank, pump (or pumps), and pipes. You can use a variety of pumps and methods, but generally speaking, you’ll want to draw up a certain amount of the chemical into a holding container. After that, it is injected into a tank or pipe that contains water or other substances that need dosing.

Types of Chemical Dosing Pumps

Three main types of chemical dosing pumps are used in water treatment: displacement style (diaphragm and peristaltic), piston, and centrifugal. Which pump is ideal depends on the task at hand.

Displacement Pumps

Ideal for injecting chlorine and other chemicals into water treatment systems.

Centrifugal Pumps

Feature impellers that propel the fluid in the direction of the discharge port. Water recirculation frequently makes use of this sort of pump. This is due to its ability to pump enormous volumes of water.

Piston Pumps

These find widespread application in water reclamation systems, such as reverse osmosis. This is due to their ability to withstand extremely high pressures.

How to Pick the Right Chemical Dosing Pumps

There are a lot of things to think about when picking the right chemical injection pump for your needs.

Your first order of business is to find a pump with a sufficient flow rate. Chemicals can be pumped at substantially higher flow rates by larger, more robust pumps than smaller, less robust ones.

Another important consideration is choosing a pump that works with the chemicals your application requires.

Review of the 6 best Chemical Dosing Pumps

PULSAFEEDER LB64SA-PTC1-XXX PULSAtron Series A Plus Metering Pump with Dual Manual Control

These are positive displacement pumps of the diaphragm type. While they’re running, you can change the output volume from 0 to their maximum setting. Thermal overload/auto-reset protection for the solenoids, circuit safety against current/voltage upsets, and the timing circuit are all characteristics that contribute to the metering pump’s durability. The cutting-edge ball and seat design ensures unmatched performance with superior priming and suction capabilities.

Managing these metering pumps is a breeze. The liquid-handling end has a dial knob that allows for easy adjustments to the stroke length and frequency. The auto-off/manual switch and the 4-20mA DC and stop function inputs allow for automatic control.

The pump drive assembly has no exposed moving parts because it is entirely covered. The pump’s electronics are housed in a special container that prevents them from coming into contact with chemicals. The average electrical use is about 130 watts.

Features

Cushioned on the inside to lessen noise
A standard, long-lasting bleed valve assembly that is leak-proof makes priming a breeze.
Minimal amount of motion
Exceptionally dependable timing circuit
Systems for guided ball check valves that lessen backflow and improve priming performance.
Mountable on a wall
Protection of solenoids through auto-rest and thermal overload
Can serve both indoors and out thanks to its water resistance
You can manually control the stroke rate and length using the onboard knobs.
Protection of the circuit from current and voltage fluctuations

Advantages

Liquid end that is leak-free and seal-less.
Prone to working with materials with a high viscosity.
Achieved a “hot” rating for continuous duty.
Accurate metering results.

Peristaltic dosing pump 12V Kamoer variable speed small water pump with pump head For Lab chemical experiment， KCP PRO2 Norprene tube:3.2mm×6.4mm

Because of the DC brush motor used in this product, there is a risk of early failure due to overuse, short motor life, and continuous use. You should check the hose’s chemical compatibility or conduct immersion tests. This is to ensure it can withstand liquid media. Otherwise, you risk damaging the hose in the near future if you choose it incorrectly.

Working in conditions where the humidity is more than 70 percent and the temperature is more than 45 degrees Celsius can cause the product to break down before its time. The precise application conditions and liquid medium determine the likelihood of a hose rupture-related liquid leakage accident.

If you don’t plan on using this product for an extended period of time, you should replace the pump tube. This is because it will reduce the hose’s rebound ability.

Features

Application: transferring liquids in the environmental protection industry, large sweepers, bonsai irrigation, household equipment, inkjet printers, and laboratories.
The peristaltic pump tube is made of French Norprene, famous for its durability, excellent chemical stability, and resistance to wear and corrosion. Food-grade pipes also have a longer lifespan.
A simple knob allows you to control the direction of the liquid’s flow, as well as its start/stop and flow rate.

Gikfun 12V Adjustable Peristaltic Dosing Pump Liquid Metering Pump with Adapter for Aquarium Lab Analytical EK1960

Ideal for use in analytical settings, laboratories, and aquariums. Anyone looking for precise dosage control needs this liquid metering pump. This is due to its high-quality design and accuracy. Thanks to the included adaptor, this versatile pump is compatible with a wide range of installations. You have complete command over the dispensing amount and flow rate with the EK1960 Peristaltic Dosing Pump.

This way, you can get the best dosage for you. This pump provides outstanding accuracy and dependability. This makes it ideal for analytical testing, chemical dosing in aquariums, and laboratory studies. This product is a user- and maintenance-friendly device that prioritizes convenience. With its easy-to-understand UI and crisp digital display, it is a breeze to set up and keep tabs on.

A Guide to Chemical Dosing Pumps Even in harsh conditions, the pump will continue to function reliably because of its sturdy construction. Inaccurate measurements and manual dosage are things of the past. Automate the procedure with the Gikfun 12V Adjustable Peristaltic Dosing Pump for worry-free, consistently accurate dosing. Anyone from amateurs to scientists to working professionals will find it the perfect option. Avoid settling for subpar dosage control at all costs.

Easy to use

You can easily disassemble, clean, and maintain the pump head.
Water treatment, products, biotechnology, ceramics, pharmaceuticals, fine chemicals, biochemical analysis, experimental, and other fields have extensively used this dosage pump.
The small form factor provides all the benefits of a press-type pump while avoiding numerous drawbacks, like the hassle of moving the hose that goes with the press-type head.
With an adjustable peristaltic pump, you can control the water pump’s flow rate with a knob. This makes it suitable for a wide range of uses, drastically reducing expenses.

Application

Dispense liquids experimentally and do quantitative extraction
Dispensing factory liquid
Sample analysis, transport of chemical liquid
Bonsai irrigation, family watering
Cleaning the pipeline, ink transmission
Sampling of sewage and transmission
Food liquid dispensing
Support the medical equipment

Pros

Adjusting is a breeze
Highly precise
Affordable
Sturdy design

Cons

This product is not intended for use in aquariums.

Stenner Pump 85mhp17. Stenner Peristaltic Pump Adjustable Head – Rated at 0.8 to 17.0 and adjustable head. Rated at 100 psi. Ideal Chlorine Pump. Ideal Chlorine Injection

This product is the way to go when dealing with problematic water. Oxidized contaminants like manganese, hydrogen sulfide, or iron can control the pH of the water. After that, it is filtered out using the pump’s water treatment applications. Cooling towers, industrial processes, water conditioning, wastewater and water, and animal health are just a few markets that use water treatment for oxidation, pH adjustment or control, disinfection, and scale and corrosion control.

Because of its adaptability, the product finds use in a wide variety of industries, including metal finishing (to treat plating baths), irrigation (to clean sprinkler heads), cooling towers (to prevent Legionella), and horticulture. To disinfect pool water and facilitate equipment maintenance, the pumps enjoy immense popularity in the commercial pool industry.

Features:

Accepts various chemicals
Pumps of gaseous solutions
Metering of chemicals without being exposed to air
Thanks to the interchangeable pump tubes and heads, you can easily switch between models.
Designed with peristaltic action, it self-primes and can work dry without harm.

12V DC DIY Peristaltic Liquid Pump Dosing Pump for Aquarium Lab Analytical 3mm ID x 5mm OD

Both viscous and non-viscous liquids can be pumped using this pump. Disassembling, cleaning, and maintaining the pump head is a breeze. The experimental field has extensively used environmental protection, ceramics, pharmaceuticals, fine chemicals, biochemical analysis, water treatment, products, biotechnology, and many others.

The Peristaltic Pump is of high quality. The internal rollers of this pump are responsible for the pumping motion. The motor moves the rollers, which push the tube against the pump’s inner wall. This pinches the compressed section of the tube shut, allowing the pumped fluid to pass through.

Features:

12VDC is the operating voltage.
100mL/min flow rate
Construction of superior quality

Applications:

Dispense of Liquids
Systems that water plants automatically
Water Pump for Aquariums

6. Jebao Programmable Auto Dosing Pump DP-4, Black

A brand new, reasonably priced dosing pump with four different heads is the DP-4. With the ability to design each pump to administer a precise volume of solution up to 24 times a day, users can maintain consistent tank parameters and say goodbye to regular supplement mixing. This pump automatically adds kalkwasser, magnesium, calcium, strontium, trace elements, or any other liquid additive to your aquarium. Every pump can be controlled independently by a sophisticated and user-friendly controller.

The pump is ideal for use with any tank because of its small and large increment dosing capabilities. Once calibrated with a measuring cup (not included) or 100 mL graduated cylinder, the DP-4 is ready with its integrated power source and plug-and-play. The 6-month warranty of each pump covers the replacement of parts that fail due to manufacturing faults.

An internal memory saves your preferences in the event of a power failure. The dosage heads use four silent, long-lasting motors. These generate strong torque using medical-grade rubber tubing. A backlit LCD monitor and a water-resistant control panel make for easy and clear programming.

Features:

The user can maintain consistent tank specifications.
The ability to calibrate the flow rate, configure the auto-control feature, input liquid, and set a new date.
Has its power source.
4-channel dosing pump.
It’s possible to increase or decrease the dosage as needed.
Programmable for 24 hours of operation daily.
Simply calibrate it using a 100 ml graduated cylinder, then plug it in.
The easy-to-use controller allows for customized programming of each pump.
Per day, each channel delivers 1–9,999 milliliters.
Ideal for aquariums of any size.
Include various nutritional drinks at predetermined times and in predetermined portions automatically.
Supplements no longer require daily mixing.

Usage Guideline:

To change the feeding interval time, turn off the power.
Avoid using liquids that are prone to corrosion or crystallization.
Fill the inlet and output hoses with liquid using the manual mode before usage. After that, adjust the flow rate of each pump. This will help to guarantee accuracy throughout the procedure.
Keep the inlet hose away from liquids prone to corrosion or crystallization.
Keep away from water, and use only indoors.

Conclusion

There is a lot of pressure on wastewater and water treatment facilities. They are required to do an excellent job so that communities can enjoy clean water for everything from bathing, cleaning, cooking, and recreational activities such as boating and fishing. The plant operator’s risk increases due to the potential number and types of chemicals needed for the different treatment procedures. Because of this, selecting the most effective pump technology for each of the several essential chemical metering operations that must occur daily is the only way for the operator to guarantee that the operation achieves optimal performance.

It is necessary to use a diverse array of pump types to ensure optimal operation. This is due to the wide range of variables, such as handling characteristics, pH levels, viscosities, and compatibility problems. Peristaltic, hydraulic, mechanical, and solenoid metering pumps provide the finest operational capabilities for chemical handling. Implementing these technologies alleviates any worries the plant operator may have. Additionally, the pump manufacturers are even willing to offer assistance. This is to guarantee the treatment system will consistently perform at its best.

There isn’t a magic bullet when choosing chemical dosing pumps. How exactly are we going to power the pump? In what exact spot will the pump be housed? Is that spot limited in any way? How does one go about controlling the pump? Is a peristaltic or diaphragm pump necessary? Discussing these and any other concerns with an expert at Express Drainage Solutions will help you choose the most suitable pump for your needs. Contact us today!

Mar 08

Peristaltic Pump Vs. Syringe pump – What is the Difference?

By Antony Muya | Pumps | No Comments

There are many uses for pumps, but the two most common and versatile are syringe and peristaltic pump systems. But picking the best is always challenging. As a rule, peristaltic pumps are used in industrial and laboratory processes. It is important for users to understand the systems and how to compare different technologies properly.

Peristaltic Pump

If you need to pump fluids, this positive displacement pump is what you need. Using these pumps while handling reactive or sterile materials is common practice. This is because the liquid cannot be contaminated by touching the pump components. As a result of their small size and effective functioning, peristaltic pumps are ideal for use in laboratories. Also, you can use them to swiftly administer several smaller portions of solutions, like buffers and culture media. Although these pumps are cost-effective due to their diminutive size, they are not ideal for applications requiring a consistently stable flow rate. This is because their mechanical spinning causes pulsing at low speeds.

Syringe Pump

These are specifically engineered for the precise administration of minute volumes of liquid in a sterile, inert setting. Syringe pumps are inherently unremarkable in terms of flow rate and capacity. But they are reliable and produce a very smooth flow. Because of this, they are perfect for use in the lab, including fluid dynamics. Supercritical water gasification-regulated medicinal agent infusion into patients and calibrant infusion into mass spectrometers are some of the many uses for these pumps. This means efficiency and durability are key features when shopping for syringe pumps.

Types of syringe pumps

Medical Infusion Pump:

These devices can administer blood, drugs, and nutrients to patients in precisely measured amounts. Research, treatment, and diagnosis can all make use of this infusion pump type.

Laboratory Syringe Pump:

In scientific settings, these devices are ideal for tasks that necessitate the precise administration of fluids. Pumps designed for use in laboratories sometimes have a lower volume capacity and more advanced capabilities than their medicinal counterparts. Examples include syringe pumps with many syringes and those that can infuse and remove fluids. High-pressure syringe pumps and OEM module syringe pumps. Recent industrial applications have proven the usefulness of the high-end pressure syringe pump and OEM module syringe pump.

Advantages and disadvantages of a syringe pump:

Advantages:

You can manage the temperature with these devices because they include an in-built heater.
By linking syringe pumps to a computer, nurses may program devices to record infusion histories more accurately and with fewer mistakes.
Syringe pumps are incredibly precise instruments that can facilitate the delivery of picoliter-scale volumetric flows.
They have the capability to transport more viscous fluids.
A steady flow of fluids is ensured because they enable the doctor to establish a goal pressure and regulate. This profoundly affects the course of the patient’s illness and their ability to recover.

Applications

Biomedical Research

Syringe pumps provide for the continuous flow of chemicals. This is essential in biomedical research due to the complex processes involved in experiments. Research involving tissue engineering, cell cultures, and medication delivery relies on this.

Analysis of Chemicals

Thanks to them, scientists can now mix and deliver chemicals with pinpoint accuracy. This degree of control is invaluable in analytical chemistry, where even little changes can have a big effect on results.

Pharmaceutical Industry

Syringe pumps are often used in pharmaceutical research due to the high precision required. They ensure the precise administration of pharmaceutical ingredients. This aids in the creation of safer and more effective medications.

Advantages of peristaltic pumps

Since peristaltic pumps do not allow backflow, they are known as non-siphoning pumps. Dispensing becomes more precise as a result.
Peristaltic pumps are compatible with a wide range of liquids thanks to more than 20 different tubing formulas and sizes.
Certain peristaltic pumps can change speed, making them perfect for dosing.
A peristaltic pump is perfect for working with cells and big proteins. This is due to its gentle pumping action and low shear, which prevent the content from being damaged.
Because the peristaltic pump is not in contact with the fluid, no moving components need cleaning, including seals, diaphragms, and valves. Changing or cleaning the tube is all that’s required. Maintenance times are reduced because of this fast tubing replacement.
Self-priming—these devices have a suction lift of up to 8.8 meters and can suck fluid into the tube when they are dry to start. Filling other pumps with fluid before using them can be a hassle and a safety risk because of the suction line and pump.
The tubing is the sole component of a peristaltic pump that has direct contact with the liquid. Both the fluid and the pump are kept sterile in this way.

Common applications for a peristaltic pump

Spray coating dispensing
Transfer of fuels and lubricants
Cell media harvesting
Ultrafiltration
Pizza sauce dispensing
Manufacturing IV bag dispensing
Culture-specific nutrient supply
Dispensing acids and bases
Dispensing sterilized media
Dispersing cosmetics
Aspiration of tissue culture medium
The manufacture of circuit boards
Cell suspension circulates during fermentation.
Vitamin A and vitamin D injections
Glue emulsion dispensing
Juice production
Adhesives for cement

Comparison

Syringe pumps offer greater flow control and are primarily used in applications that require this exceptional flow, such as micro- and nanomanufacturing, microfluidic reactors, fluid batteries, and many more. In contrast, peristaltic pumps are relatively inexpensive. While syringe pumps are compatible with traditional GC/MS and HPLC systems, peristaltic pumps are superior for large application volumes. Biotechnological fields necessitate intricate procedures like therapeutic interventions and gradients of drugs, and syringe pumps are the most dependable tool for these tasks.

Conclusion

A peristaltic pump is ideal for metering clean, aggressive chemicals in a high-pressure setting. Talk to the experts at Express Drainage Solutions about your options; they know the industry inside and out.

Mar 08

Why is a Piston Pump Also Called Plunger Pump

By Antony Muya | Pumps | No Comments

One type of positive displacement pump is the piston pump, while another is the plunger pump. These pumps use a cylinder chamber and a reciprocating piston or plunger to transfer media. Because of their ability to handle mediums, which are both viscous and solids, these pumps go by various names, including high-viscosity pumps, high-pressure pumps, and well-service pumps.

What is a piston pump?

Another component of piston pumps is a rod known as a piston. This moves in a reciprocating motion to push liquid through a series of valves. In contrast to plunger pumps, the seal of a piston pump is integral to the piston. It allows it to rotate in synchronization with the piston within the cylinder.

To what extent are piston pumps efficient?

With an efficiency ranging from 85 to 90 percent, a piston pump is among the most efficient pumps currently available. These pumps do not require a gearbox because they can operate directly from motors or via guarded V belts. This is typically a factor contributing to the losses in the transmission.

What are piston pumps used for?

Examples of typical uses for plunger and piston pumps include applications requiring a low flow rate of a liquid at high pressure, such as chemical injection into pressurized pipework or filtration of seawater for reverse osmosis.

For metering and batching applications, a piston pump is predictable. This is because of its positive displacement design, which means that the volume dispensed is proportional to speed.

Why is a Piston Pump Also Called Plunger Pump These types of designs can only work with pure liquids. They should not have any abrasive or solid particles that could shorten the lifespan of the units, destroy the seals, or cause internal components not to seal and clog.

Such designs can manage to handle saltwater, chemicals, and fuels, but they aren’t always the best choice for situations that call for a self-priming pump. They typically necessitate a flooded suction or, in the case of high-flow units, a booster pump.

Some of the most popular applications include:

Coating feed for spray bars used to apply polymers, fats, and other coatings to items
Hydroblasting and hydro-excavation
Boiler tube or heat exchanger descaling.
Transfer of fuel
Drill-cutting injection
Using pressure washers for a variety of plant equipment cleaning and washing needs, including pallets, bottles, conveyors, kegs, and more
Using reverse osmosis to purify salt water into drinkable water.
Pressure testing of equipment and hydrostatic
Removing concrete from pipes or rebar, cleaning the hull, and removing rust, labels, graffiti, and paint are all part of the surface treatment.
Maintain clean and abrasion-free seals on other pumps by sealing the flush feed pump.
Misting to eliminate smells, fogging to control nozzles, and fluid misting using nozzles
Chemical injection

What is a plunger pump?

The reciprocating plunger, which is a rod, makes plunger pumps work. It takes liquid in through an inlet valve and pushes it out through an outlet valve as it oscillates. The cylinder housing of a plunger pump is fastened to a stationary high-pressure seal.

The advantages and disadvantages of a plunger pump?

One type of reciprocating pump is the plunger pump, which uses a cylinder to force fluids or gases through a chamber. Many industries rely on them for high-pressure pumping and precision control, including chemical, oil and gas, and hydraulic systems. Here, we’ll go over some of a plunger pump’s uses, benefits, and drawbacks.

Advantages

Low maintenance:

They are also low-maintenance due to their straightforward design. Plunger pumps are less likely to break since there are fewer moving parts.

Versatility:

These devices are adaptable and can process a variety of fluids, including those with high viscosity or corrosive properties.

Accurate control

Using plunger pumps, You can regulate fluid flow rate with pinpoint accuracy. They can measure and dose fluids at a precise flow rate.

High-pressure pumping:

A plunger pump is ideal for a wide range of uses that call for the generation of high-pressure fluid flows.

Disadvantages

Possibility of leakages

Contamination and fluid loss can occur if the pumps develop leaks.

Inadequate flow rate

When compared to other pump types, plunger pumps’ flow rates are quite modest. Their primary use is in situations that call for low-flow, high-pressure pumping.

Noise:

Using a plunger pump at high rates could cause it to make a lot of noise.

Expensive:

There are more affordable pump options available than plunger pumps. Applications requiring high-pressure pumping and precise control over the flow rate often use them.

The difference between a positive displacement pump and a plunger pump

Positive displacement pump

Pumps that use positive displacement technology mechanically transport the fluid through a system by repeatedly closing off a fixed volume. Simply put, a positive displacement pump moves fluid by using the change in volume within the pump cylinder. Vanes, rollers, screws, diaphragms, gears, and pistons can all power the pumping motion, which is cyclical.

Centrifugal and positive displacement pumps are the two most common types. Higher flow rates and the ability to operate with liquids of lower viscosity are two advantages of centrifugal pumps. A staggering 90 percent of pumps in certain chemical plants are centrifugal. However, positive displacement pumps are the way to go in a lot of situations. For instance, they work better at high pressures with modest flow rates. They can also manage fluids with a higher viscosity. When precision in dosing is paramount, they outperform the competition.

Among the several types of reciprocating pumps utilized, plunger pumps are by far the most prevalent. They maintain a constant flow rate of fluids pumped by them despite variations in the pressure at the pump’s outlet.

The number-one cause of plunger failure

Unfortunately, plunger pumps do break down from time to time. For this reason, there’s no pressing need to rush out and get a replacement pump. If the failure is due to a common plunger pump problem, hire a professional to rectify the issue. These issues usually include the following:

Oil leakage

Inspect that the breather cap isn’t loose, the bolts on the diaphragm head are snug, and the oil cap is on. Additionally, make sure there isn’t too much oil in the pump.

The pump motor won’t turn on

A lot of things could cause this to occur. Open thermal overload, blown fuse, motor damage, limit switch or timer open circuit, or low line current are among the causes.

Reduced pump capacity

Verify the same problems as before. Further reasons could include the liquid’s proximity to its boiling point, insufficient or excessive suction lift, an excessively high viscosity of the fluid, or an improper capacity setting.

The pump operates unsteadily

Always place a strainer in the suction line to prevent debris from entering a pump during installation. This will ensure that the piping is clear in the event of a blockage. Be sure the pipe’s diameter is greater than or equal to the suction connection.

Motor overheating

There can be issues with the temperature outside, the wiring, the hydraulic oil’s viscosity, or the voltage. It is important to verify that the motor controlling the pump discharge has a pressure rating.

Very noisy pump

Some potential causes include worn bearings, too much gear wear, and insufficient lubrication.

Issues with auxiliary equipment

All auxiliary equipment must be appropriately sized, including the pipes and pump. Controls, calibration cylinders, pulsation dampeners, safety relief valves, and back pressure are all part of this.

Improper placement of the pump

Because the pump’s efficiency is sensitive to temperature variations, its placement in your building can be problematic.

Unreliable old seals

When it comes to seals, operators and engineers often need more faith in older systems’ reliability and durability. Before starting operations, this needs checking.

The pump is operating, but it does not deliver

It may be due to an improperly installed valve if the pump is not operating even though the motor is turning. Look for other issues, such as an unprimed pump, filthy or damaged valves, a clogged suction or discharge line, or a lack of hydraulic oil.

Conclusion

Our team of piston pump specialists is here to help if you are looking for high-pressure electric commercial pumps that operate well for your industry. Let’s have a conversation about your needs and obstacles so we can find a solution. Contact Express Drainage Solutions today!

Mar 06

Guide for a Successful Dosing Pump Installation

By Antony Muya | Pumps | No Comments

Many different types of businesses rely on dosage pumps. Anyone in the pulp and paper, electroplating, water treatment, and mining industries can use these. A dosing pump serves multiple purposes, even in the medical pharmaceutical sector. Even for relatively basic chemical reactions, like changing the chlorine or pH level in pool water, the fundamental goal of utilizing a dosing pump is to induce flow and reaction in a body of fluids.

Although acids are commonly introduced into water to initiate chemical reactions, you can also use flocculants. This will ensure that sediments sink to the bottom. Additionally, flocculating substances can alter the water’s chemical makeup, rendering it acceptable for consumption. However, dosing is useful in making a wide range of products and is not limited to altering water’s properties.

Although a dosing pump is useful for biocides, corrosion inhibitors, metering fluids, and high-temperature and high-pressure fluids like boiler feed, they often require component changes during manufacturing. For example, they switch from low-quality plastic dosing pipes to stainless steel, aluminum, or polypropylene.

Important features: The pump’s structure

The three components of the pump are the cylinder block, the transmission box, and the motor.

The transmission box comprises a crank connecting rod, stroke-regulating, and turbine worm mechanisms. One has to turn the adjusting hand wheel to alter the plunger (piston) stroke. This will apply a high adjustment stroke, which changes the eccentricity of the moving shaft.

The packing seals, discharge valve group, pump head, plunger, and suction valve group form the cylinder body.

The working principle

The rotation of the eccentric wheel and spindle is due to the motor driving the worm through the coupling and decelerating the worm gear. The eccentric wheel drives the bow connection rod’s sliding adjustment seat. This allows for reciprocating motion. Inhalation of liquid occurs when the plunger slowly returns to the dead point, creating a vacuum in the pump chamber. Expulsion of fluid occurs when the plunger advances toward the dead point, closing the suction valve and opening the discharge valve. The liquid is continuously and quantitatively discharged via the pump’s reciprocating.

Flow control

You can vary the pump’s flow size by turning the hand wheel, which drives the adjustment screw. This changes the distance between the bow-type connecting rod, which changes the plunger’s (piston’s) movement within the pump chamber. With a precision of 95%, you can adjust the handwheel’s scale to find the plunger stroke.

The characteristics of the pump

The pump is highly efficient; for example, it precisely measures and transports fluids, does not leak, and has excellent safety features. Additionally, it allows for random selection of flow from zero to a maximum value range and pressure from normal to an allowable range.

There is no noise, the operation is smooth, the volume is small and easy to maintain, and the weight is light. Additionally, you can use it in parallel with no problems whatsoever.

Considerations before dosing pump installation

You may be dealing with hazardous chemicals throughout the dosage process. For this reason, you must follow all necessary safety procedures before handling any substances involving high temperatures or pressure. When not handled properly, there is a high chance of operator error, pumping inaccuracies, leakage, and major accidents.

Guide for a Successful Dosing Pump Installation Prior to commencing any chemical dosing procedure, you must refer to the product specification and manual provided by the manufacturer. Feel free to ask for assistance if you have any questions or are stuck. Express Drainage Solutions is the company you call if you need help with dosing pump installation.

Prioritizing safety at all times

Before you install a product, make sure you read the instructions and specifications carefully.
Environment: Which location will you be carrying out the dosing pump installation? What else is near?
Think about safeguards for storage.
Personal protective equipment is essential for operators and anyone in the immediate vicinity.
Are the chemicals you’ll use compatible with your work? Consider their corrosiveness, toxicity, and other properties.

Installing Dosing Pumps

Exceptional precision

Installing the parts correctly is crucial for the best results when using dosing pumps. This is because they can work with a high level of precision. To avoid corrosion or accidents, ensure that the metered chemical is completely compatible with the dosing pumps and all their parts, including holding tanks.

Specialized parts

For the majority of dosing pumps, specialized components are necessary for the dosing of chemicals with extremely high corrosiveness, pressures, or temperatures. For instance, to facilitate replacement or disinfection for repeated use, the medical sector makes use of flexible plastic dosing pipes.

Locate the installation area

Due to the potential for heat buildup or corrosive chemical accumulation, which could harm nearby structures and equipment, it is important to locate the pump and its components before dosing pump installation. Installing the dosing pump too close to the water meter is a typical error that leads to sludge accumulation and rust in a relatively short time.

In order to avoid siphoning, the pump should be set below the dosage point and adjacent to the compressed air line. Additionally, this prevents sunlight and other harsh weather conditions from harming the pump. These can eventually shatter the outer layer of the metering system.

It is best to store dosing pumps in a protective shed or dedicated cabinet, even though they are often corrosion-resistant.

Product container

An additional critical issue is the product container or holding tank. If the bulk containers are backup stock or will only be used for a short time, store them away from the site. The precise location of storage is irrelevant if bulk handling equipment is readily available. Be careful not to overhandle chemicals that require instant and constant usage and have a short shelf life. Store these close to the dosing pump.

Best place to put a dosing pump

Dosing pump installation on a wall is often a fast and simple process. While the majority of manufacturers provide detailed instructions to help with installation, a few opt for a more hands-on approach by providing dosing pump installation videos to show how to fit the system.

But, on occasion, minor problems may emerge during dosing pump installation that can affect the system’s ultimate performance. If the installer is aware of what to look for, they can usually easily fix these minor problems.

Tips for your dosing pump installation

Install a back-pressure valve at the pressure side’s terminal. This ensures the pump receives the correct pressure for precise dosing and stops fluid from reentering the system.
Supply a short hose for suctioning. No suction height greater than one meter is allowed for pumps that include automated air vent valves.
Make sure your suction hose is straight and free of airlocks or joints.
Gas-containing liquids should have a positive inlet installed.
Make sure not to run dry.
Put a valve in the suction line if the pump has a positive inlet.
Replacing the pallet tank before running out ensures the dosing system doesn’t contain gas or air. It is best to use a suction pipe that has a level switch.
Put a pressure gauge on the pump’s pressure side and, if needed, a pulsation dampener on the same side to prevent pulses.
Get the pump near the pallet tank.
Degassing is necessary for removing air and gas from the tubing and pump. Putting gas in the pump will not get it to work normally.

Conclusion

To maintain the safe disinfection of drinking water, it is important to use motor-driven, peristaltic, solenoid metering pumps selectively for their particular applications. This will allow for the proper chemical supply. Remote monitoring, special applications, or further control for various purposes is possible with advanced instrumentation options.

Mar 06

The Difference between Metering Pump and Dosing Pump

By Antony Muya | Pumps | No Comments

Metering pumps, dosage pumps, or dosing pumps are positive displacement pumps. They help to introduce chemicals or other substances into a steam, gas, or water stream. A dosing pump should be small for optimum control and provide very accurate flow rates. These pumps are vital in autonomous chemical dispersion systems that use integrated metering.

Not only that, but these pumps can measure flow control and dispense precise amounts of fluid. They use expansion and contraction chambers to move the fluid. Acids and bases, corrosives, viscous liquids, and slurries are just some of the many types of liquids a metering pump can handle.

What Is a Metering Pump?

Accurate dosing and delivery of chemicals or liquids are possible with a metering pump. Its principal use is the precise delivery of liquids to specified locations at specified rates of flow or dose. Typically, a metering pump comes with flow controls that you can change to control the output flow rate precisely.

Features

Several applications
Multiple operating principles
Adjustable flow rate
Precise metering

What Is a Dosing Pump?

Consider regulating the amount of chemicals supplied using an adjustable flow control device in a dosing pump. This pump type is used for adding additives or chemicals to fluid systems. It is important to keep the chemical concentration and dosage within a certain range to meet the treatment process’s needs and achieve the best possible treatment outcomes.

Dosing pumps often feature top-notch materials and state-of-the-art technology to guarantee their reliable operation. Additionally, they can adapt to various work settings and meet diverse needs. Some examples include controlling chemical reactions in water treatment, delivering disinfectants, and adjusting pH.

Features

Resists corrosion
Adjustable flow rate
Various options
Stable and reliable
Precise dosing
Automatic control

Here are some differences between a metering pump and a dosing pump.

Flow Rate:

Metering pumps can manage larger flow rates and help maintain a constant flow rate over a long period of time. Their ability to maintain a constant and accurate flow rate makes them ideal for applications like numerous industrial operations that require this.

Conversely, dosage pumps are commonly used for the controlled and separate administration of fluids according to the needs of individual applications. When a steady stream of additives or chemicals isn’t required but accurate dosing is, these are the best options for low to moderate flow rates.

Purpose:

Metering Pump:

A metering pump is the way to go when a procedure calls for regular and accurate dosing over a long period of time. These pumps can continually provide fluid at a set flow rate. These are the go-to machines when a constant flow rate is required, such as in chemical production or water treatment.

Dosing Pump:

The purpose of a dosing pump is to distribute a predetermined amount of fluid in batches or at predetermined intervals. They find widespread application in pharmaceutical manufacture, the production of food and beverages, wastewater treatment, and other operations requiring controlled injections of fluids at regular intervals to add additives or chemicals.

Accuracy and control:

Metering pumps are vital in processes where even little changes in flow rate can significantly impact the outcome. This is because they control and maintain a constant flow rate. Water treatment and chemical manufacture are two common applications where a continuous flow rate is required.

The fluid volume provided with each cycle can be precisely adjusted and controlled with dosing pumps designed for accurate dosing. Because of this quality, dosing pumps are perfect for uses requiring controlled and accurate dosing of additives or chemicals. This is because they deliver predetermined amounts of liquid with great accuracy. When precise chemical dosing is of the utmost importance, as in the wastewater, agricultural, and pharmaceutical industries, dosing pumps find widespread application.

Control and Monitoring:

Metering Pump:

Modifying the flow rate in response to real-time feedback, external control systems, and feedback loops are common features of metering pumps that provide advanced monitoring and control capabilities.

Dosing Pump:

Some dosing pumps may include simple controls that allow you to change the dosage and how often it is administered. Batch or periodic dosing is a common configuration for these.

Pumping Mechanism:

Metering Pump:

Some mechanisms metering pumps use include peristaltic pumps, piston pumps, and diaphragm pumps. Their design prioritizes continuous operation over short bursts.

Dosing Pump:

Peristaltic pumps and diaphragm pumps are common types of dosing pumps. This is because they allow for precise and sporadic dosing.

Applications:

Metering Pump:

Some common uses include continuous process maintenance of particular chemical concentrations, pH control, chemical injection, and disinfection.

Dosing Pump:

In batch processes, like those found in labs, pharmaceutical manufacturing, and the food and beverage industry, dosing pumps help to add specific amounts of additives, reagents, or chemicals.

An Ideal Option for Dosage Systems

Depending on the application, metering or dosing pumps are used with dosing systems. You can add medications and other liquids to other fluids using dosing pumps. Pharmaceuticals and water treatment are two examples of typical applications for dosing pumps. These allow for exact control of flow rates. Accurately adding one fluid to another is the job of metering pumps. Applications requiring exact control of additive concentrations, like oil and gas, are common uses for metering pumps.

How to Maintain the Pump

Adjust flow rate
Adjusting the controller
Inspect seals and lines
Keeping it dry
Regular replacement of parts
Maintain cleanliness frequently

In conclusion

Consider your application’s needs carefully before deciding between a dosing pump and a metering pump. It is better to use a metering pump if you require a constant and accurate flow rate. A dosing pump is the way to go when you need to dose additives and chemicals precisely and intermittently. Therefore, you can contact Express Drainage Solutions for assistance with these pumps.

Mar 05

How to Troubleshoot a Chemical Metering Pump

By Antony Muya | Pumps | No Comments

To ensure your chemical metering pump works well without a hitch, it’s a good idea to get expert advice before you buy and install it. The professional installer you choose can arrange for the final installation. They will also provide any specialized system components you may need. Field training may be necessary in addition to mechanical schematics, manuals, plant drawings and layouts, and other similar materials, depending on the situation. However, a chemical metering pump will eventually wear out, break down, and need an emergency repair, regardless of how well you install and maintain it.

What is a chemical metering pump?

As the process demands, the metering pump’s capacity can be adjusted automatically or manually. It is a positive displacement chemical metering device. Transfer pumps, used to transfer liquids from one location to another, account for nearly 90 percent of all pumps sold. On the other hand, metering pumps are specialized pumps made for the precise injection of substances like slurries, corrosives, acids, viscous liquids, bases, or chemicals. Any time any of the following applies, a metering pump is necessary:

Pumping of slurries and viscous fluids
Existence of high system pressure
Handling of high-temperature, dangerous, or corrosive fluids
PLCs, microprocessors, computers, or DCS can help regulate the varying flow rates.
Demands a feed rate with a high degree of precision

Basic parts of a chemical metering pump

Accuracy:

When appropriately installed, industrial-grade metering pumps typically have a steady-state precision of +1.0 percent or higher. A chemical metering pump’s turndown ratio serves as the basis for evaluating its precision over a range, even though the pump can typically be adjusted to pump at any flow rate between zero and maximum capacity. Modern hydraulically operated metering pumps can precisely dose chemicals within 1 to 100 percent of their rated capacity, thanks to their 1,000-1 turndown ratio.

Driver:

Typically, a constant-speed AC motor powers the pump. They also use hydraulic, pneumatic, and variable-speed drivers. Solenoid coils are a cost-effective driving mechanism for smaller pumps.

Flow Adjustment:

Stroking speed, effective stroke length, or varying stroke length are the three variables that control the pump’s flow rate. The flow rate of most metering pumps can be adjusted in response to process signals using either a pneumatic or electronic actuator or a micrometer screw.

Liquid End:

The portion of the pump that is in contact with the liquid is called the “wetted” end. When dealing with dangerous or poisonous chemicals, it is crucial to consider how well they can protect plant employees and the environment. Application-specific requirements, such as the corrosiveness of the pumped materials, fluid viscosity, flow rate, and temperature, dictate the material choice. This can be plastic, nickel alloy, or stainless steel.

Driver Mechanism:

The drive mechanism converts the driver’s rotational motion into reciprocating movement. Industrial-duty pumps will immerse this part of the pump in an oil bath for uninterrupted operation to ensure reliability. A solenoid pump generates linear motion directly through an electro-magnetic coil.

Here are a few of the most typical issues:

Excess chemical

Possible causes include chemical siphoning into the main line or well, using very rich chemicals in the solution tank, or an excessively high pump setting.

Loss of chemical residue

Running dry of the solution container, scaling at the injection site, or using an extremely low pump setting are all potential causes.

Leak at the tubing connection

This is typically the result of chemical attacks or worn tube ends.

The pump is not priming or is not priming properly

Excessive suction lift height, improperly sealed ball checks, a filthy check valve, or high discharge pressure are all potential causes.

Non-functioning pump

A number of factors can contribute to this issue, including a suction side leak, an incorrect pump setting, a ruptured diaphragm, a low level of solution, a malfunctioning electrical control board or wiring, a broken or cracked pump head, non-sealing valve seats, chlorine gas or air inside the head, or a voltage drop.

Where to use a chemical metering pump?

A wide variety of chemicals are needed in the processes of numerous applications. These chemicals include softening agents, bases and acids, coagulants, antifreeze, wax inhibitors, process additives, polymers, disinfectants, and biocides. Some of the most common industries that buy metering pumps are:

Manufacturing
Wastewater treatment and potable water
Power generation
Processing of petrochemicals and chemicals
Agriculture
Oil and gas production
Production of food and beverage
Industrial water treatment (boilers and cooling towers)

Conclusion

Regular maintenance should keep these issues at bay, and with the proper training, most in-house technicians can do just that. Still, you should get the system checked out by a pro on a regular basis to fix any worn parts, rebuild it if necessary, or upgrade it if necessary. If you rebuild your chemical metering pump properly, it should have the same warranty as a new one, but it will be much more affordable.

Mar 03

Guide for a Successful Dosing Pump Installation Metering Pump Working Law

Dosing Metering Pump Working Law

By Antony Muya | Pumps | No Comments

A dosing metering pump is equipment for precisely dosing one fluid into another. Typically, dosing metering pumps are used in businesses that place a premium on the exact addition of substances or chemicals to larger quantities, such as pharmaceutical production.

When buying a dosing metering pump, it’s important to consider the following factors: wetted path material types, discharge pressure, liquid viscosity, flow rates, and temperature. A metering pump’s fundamental components are its motor and pump head. You can adjust them electronically or manually.

Metering pumps frequently use piston-driven positive displacement pumps to measure fluid in the reservoir chamber. Pistons operate these pumps, and different designs can be tailored to specific needs.

Type of pump commonly used for metering and dosing applications

A dosing metering pump can be either positive displacement or centrifugal. When it comes to accuracy, though, positive displacement pumps outperform centrifugal pumps.

Here are some of the most popular dosing metering pumps:

Piston/Plunger

This device comprises a housing that houses the component. During the suction stroke, fluid enters the chamber as the piston reciprocates within the housing. Afterward, it is pushed out during the discharge stroke. You can precisely obtain accurate information regarding the quantity of fluid being dosed into the fluid stream. This is done by knowing the piston’s position and the chamber’s volume.

Due to this design, piston/plunger types have the most precise fluid metering capabilities among many dosing metering pumps. But this also means the fluid stream doesn’t get any fluid during the suction stroke. Additionally, the pump allows for discharge in pulses. Because of these features, these types of pumps aren’t good choices for many uses. Wear and tear, caused by the piston rubbing against the cylinder, further reduces the pump’s lifetime.

Plunger Pump

Plunger-metering pumps use plungers to reciprocate. It is a forward-stroke, single-acting pump that releases fluids. To drain the fluid, they feature a suction check valve. A discharge check valve drives the fluid through as the plunger moves forward.

When it comes to high-pressure applications, plunger metering pumps are superior to piston metering pumps due to their design. Compared to piston metering pumps, they are faster and can handle pressures of more than 50,000 psi.

Gear Pump

This pump type mimics the action of a peristaltic metering pump but eliminates the tube. The fluid flows into or gets sucked into a vacuum created by the gear’s intermeshing motion. The gears cause the fluid to travel in a revolving motion from the inlet to the outlet valve.

Because their construction can handle high pressure, gear metering pumps are frequently utilized with fluids with a high viscosity. Applications that include hydraulic fluid power are the ones that make use of these pumps the most often.

Syringe Metering Pumps

Withdrawal and infusion syringe metering pumps are the two main types. Both have one primary function: to transport a set volume of fluid. Infusion types allow for the controlled administration of small fluid volumes at set intervals and pressures. Pharmaceutical and medical testing fluid samples are automatically withdrawn with withdrawal syringe metering pumps.

Dosage administration is the primary function of these pumps. They are subject to strict guidelines for both flow rate and speed.

To infuse or withdraw fluid, this pump uses a piston. They are unsuitable for automated applications due to their slow operation. When there are a lot of syringe-metering pumps in a system, the pressure variations can be devastating. Small amounts of fluid can only be moved by the reservoirs of syringe metering pumps.

Peristaltic Metering Pump

These pumps differ in design from their diaphragm-driven and piston-driven counterparts. The medium passes through a tubing or hose by peristaltic metering pumps. Rollers mounted on a rotor finish the fluid control mechanism. The tubing draws in the fluid flow by creating negative pressure. When the tubing is filled, the rotor’s rotation stops the flow. The fluid in the tubing flows in the direction of pumping through the rotor’s revolving action.

The roller releases tension from the tube, and the hose aligns with the flow as it finishes its motion. The subsequent delivery of the medium might fill the tubing since negative pressure is once again generated.

Mechanical Diaphragm

This pump type uses a mechanical diaphragm instead of a piston. The diaphragm draws liquid into the chamber during expansion and injects it into the fluid flow during compression. Eccentric cams drive the diaphragms by converting the motor’s rotating motion into reciprocating motion.

The amount of fluid sucked and injected into the fluid stream can be accurately measured by observing the expansion and contraction levels, just like with piston pumps. Mechanical diaphragms are ideal for dosing poisonous fluids. This is because of their tightly sealed construction, which is another advantage. They also don’t wear out as quickly as piston pumps do.

Pulsed discharge is just one of the impacts that can harm the mechanical diaphragm. Nevertheless, a two-diaphragm setup can lessen the impact of such effects.

Hydraulic Diaphragm

A hydraulic diaphragm is similar to a mechanical diaphragm but powered by hydraulics. Changing the hydraulic fluid’s pressure is one way to expand or contract the diaphragm.

The pulsed discharge is eliminated by hydraulic double-diaphragm motors using two diaphragms. Furthermore, the even load distribution on hydraulic diaphragms makes them more durable than mechanically driven ones. This allows them to handle loads that mechanical ones can’t match.

Applications of a dosing metering pump

The water treatment, food, and pharmaceutical industries are just a few of the many that use a dosing metering pump. Injecting precisely measured amounts of the substance into the fluid stream is essential in several industries, and a dosing metering pump is an ideal solution for this.

Factors to consider when selecting a dosing metering pump include:

Operating pressure
The necessary degree of precision
The injectable fluid

How do you control the flow of a dosing pump?

There are a number of methods for controlling a dosing metering flow rate. This is the quantity of liquid given per unit of time to guarantee consistent and precise dosing.

Use a programmable controller

You can schedule the dosing and adjust the flow rate using some dosing pumps‘ programmable controllers. Precise chemical dosing at predetermined intervals can be an easy method to regulate the flow rate.

Control the stroke rate

A dosing pump’s stroke rate is the number of cycles it completes in one second. One way to regulate the flow rate is to alter the stroke rate, which affects the number of pump cycles.

Control the diameter of the orifices

You can adjust the dosing pump’s flow rate by adjusting the diameter of its orifices. Less liquid can move through an opening in the same period of time when its size is smaller.

Control the inlet pressure

The inlet pressure of a dosing metering pump is the pressure of the liquid entering the pump. A change in the inlet pressure causes a corresponding change in the liquid’s pressure entering the pump. This, in turn, controls the flow rate.

Use a flow meter

One way to measure how fast liquids are moving through a system is with a flow meter. To make sure the right amount of chemical distribution, attach a flow meter to the dosing metering pump and adjust the flow rate.

Control the stroke length

The stroke length of a dosing pump is the distance it travels in one cycle. You may regulate the flow rate and the quantity of liquid dispensed per cycle by adjusting the stroke length.

Control the outlet pressure

The liquid’s pressure at the point where the dosing pump is removed from the system is known as the outlet pressure. You may change the flow rate by adjusting the liquid’s pressure leaving the pump. Outlet pressure adjustment is the method for doing this.

Conclusion

Due to the fact that different applications call for varied degrees of precision and flow, the definition of dosing changes across all sectors. Consequently, we supply a variety of dosing pumps that support a wide range of flow rates and degrees of precision.

You can get reliable and inexpensive replacements for the old-fashioned, conventional gear pumps with the help of an excellent metering pump. In both high-pressure and low-flow applications, it provides continuous dosing methods. The dosing-metering pump is ideal for both continuous and sporadic tasks. This is because they guarantee smooth pumping with minimal shear and no pulsation.

Regarding industrial dosing metering pumps, our team at Express Drainage Solutions guarantees reliable, long-lasting, and top-notch technology. We provide the top specialists in the industry to help our customers install and maintain these pumps so their industrial production runs smoothly.

Mar 02

Plunger Pump for Chemical Injection

By Antony Muya | Pumps | No Comments

Car washes, the oil and gas industries, food processing plants, and wastewater treatment plants all use plunger pumps to control the flow of fluids. The pumping chamber of the pump contains two valves—this helps to regulate the plunger’s response to a suction or discharge force. Solids can pass through the machine’s system without clogging it.

This type of positive displacement pump, which goes by several names, including well service pump or high viscosity pump, builds pressure through a cylinder mechanism. Whatever it is—sludge, liquid, or gas—the pressure pushes it through the plunger pump. The pressure opens the chambers at the inlet and outlet valves. Depending on its function, the plunger’s construction might feature various metals. On offshore oil rigs, a plunger pump with a solid ceramic plunger prevents corrosion from seawater.

The pumps find widespread use in commercial settings for tasks like agriculture, disinfection, cleaning, and pest control, among others. Additionally, you can find them in electricity-powered equipment like sprayers, atomizers, and pressure washers.

How Does a Plunger Pump Work?

The mechanism of action of a plunger pump is as follows:

A connecting rod between the pump’s plunger and the crankshaft allows the pump to function properly. An additional connection is made between this crankshaft and an electric motor.
The motor’s rotating action changes into a rotating motion as it transfers power to the crankshaft. A connecting rod transfers this additional power from the crankshaft to the plunger.
When the cylinder is subjected to a rotating action, the plunger begins to move up and down within.
A vacuum emerges within the pump chamber when the plunger begins to descend. Because of the vacuum, there is a disparity in pressure between the fluid pressure outside the cylinder and the fluid pressure inside.
The plunger pump will draw fluid into the chamber when this is complete. When it has completed sucking the fluid per the requirements, the suction valve will close, and the plunger will progress higher.
The chamber’s volume lowers as fluid pressure builds up as the pump plunger rises.
The outlet valve opens to allow fluid delivery into the delivery tank or another specified place. This happens as soon as the internal fluid pressure surpasses the pressure in the delivery tank.

Applications of Plunger Pumps

It is possible to achieve high pressures with a plunger pump. High-viscous fluids and heavy substances are no match for these pumps. It is useful for a variety of tasks because of its features:

For testing pressure
Misting and odor control are two further uses for these pumps.
Water cutting
It can help in the production of urea.
Use for cleaning applications.
Production of oil and gas
Drill-cutting injection
Liquefy coal with these pumps.
Gas dehydration is another application for plunger pumps.
Surface preparation is one of its uses.
Chemical injection is a common use for these pumps.

Advantages

These can move heavy and high-viscosity substances.
It’s possible to get extremely high discharge or discharge pressures.
The plunger pump is susceptible to variations in pressure and flow rate.
Tightening the packing while the pump runs can alleviate the leak without shutting down the pump if your company allows it.
They can pump slurries and abrasives
When dealing with variable speed, linear capacity control is essential.
The pressure they can produce is higher than that of piston pumps.
It’s very efficient and can prime itself.

Disadvantages

These pumps can only handle fluids with a modest flow rate.
The running costs of these pumps are quite significant.
Pulsation is due to irregular flow.
The maintenance costs for this plunger pump are substantial.
Acceleration head makes it vulnerable to cavitation. This can happen more frequently with lengthy suction pipes.
Pumps aren’t designed to provide unrestricted flow that is pulsing.
They’re big and hefty.
Relatively low flow rate in comparison to axial or centrifugal pumps
Reciprocating motion causes inherently greater vibration, even though revolving speeds are often lower than those of dynamic pumps.

Types of plunger pumps

The number of cylinders defines the pump’s power. The pressure of the fluid is directly proportional to the number of cylinders.

The most common varieties of plunger pumps are:

Simplex pump
Multiplex pump
Triplex pump
Duplex pump

Simplex Pump

One cylinder is all you need to pressurize the fluid in this pump. Additionally, there is just a single plunger that moves within the cylinder. Pump jacks, water jetting, hand pumps, steam pumps, and hot oils are just a few of the many uses for these pumps.

Duplex Pump

The duplex pump pressurizes the fluid using two cylinders. There is a plunger in every cylinder. Steam, cement, coal slurry, bauxite slurry, ore, slurry, drilling mud, and hot oil are some of the many uses for these pumps.

Triplex Pump

This plunger pump uses three separate cylinders to compress fluid. Three plungers, one for each cylinder, are used.

Multiplex Pump

It comes with more than three cylinders responsible for fluid pressurizing. There are more than 2 plungers contained within this pump.

Conclusion

Depending on your industry’s specific requirements, Express Drainage Solutions may provide you with a high-pressure plunger pump from our extensive inventory. Our plunger pumps’ high-pressure capabilities, longevity, and minimal maintenance needs have earned them a stellar reputation.

We take great delight in providing first-rate assistance and service to our clients. Reach out to us! In addition to providing continuous support for your pumps, we are here 24/7 to address any queries you may have.

Mar 01

How Does Chemical Dosing Pump Work?

By Antony Muya | Pumps | No Comments

When we talk about a chemical dosing pump, we refer to a pump that helps to introduce chemicals and other substances precisely into a water or gas system. Therefore, in order to prevent waste, the pump regulates the rate at which particles, chemicals, and other solutions are discharged.

The chemical is inserted into tanks or pipes that hold the fluid that is being treated. This occurs after a specific volume of liquid enters the chamber by these dosing pumps. A controller guides the pumps (controls flow rate) and turns the power on and off. Electric motors or an aeration actuation element primarily power the pumps.

How does a chemical dosing pump work?

A dosing pump can work in a number of ways, each tailored to a specific brand and model. Injecting a precisely measured quantity of a chemical into a pipe or other comparable device is key to all of these procedures. In order to set up a chemical dosing pump, you’ll need:

The chemical container or tank

The product being closed,

The foot valve.

A suction pipe connects this one-way valve. It keeps the pump primed and goes into the product drum. There should be some weight on it to keep it from falling to the product drum’s bottom part, and occasionally, a float switch triggers an alarm on the pumps if the product runs out.

The pump itself

The materials and sizes vary, although they are typically made of stainless steel, rubber, or chemically resistant plastics like PE or PVC. One end of the device is connected to the inlet via a suction line, while the other is the dosing line.

The dosage line

This is a reinforced hose, a PE or PVC tube, or something similarly rigid.

Stainless steel is occasionally used for the line in extremely high-pressure, hot water, or steam applications. Typically, it’s merely a line, but it can incorporate various air-release valves, pressure relief, and bleed.

The injector

A product has an injector point where the product is injected into it. The dosing pump may force a certain amount of product into the line. This one-way valve allows it to pass through the delivery pipe despite the pressure. The one-way valve prevents the delivery line liquid from flowing up the dosing line. This is because it can damage the pump once the chemical dosing pump stops or the product shot is released.

Additionally, the injector features a spout that directs the product flow into the center of the flow channel instead of the side walls. The release of some products, particularly oxidizers and acids such as peroxide or chlorine, near the stream’s edge can erode pipe walls over time. To further guarantee an appropriate reaction, releasing the product into the stream’s center generates a vortex, facilitating the product’s mixing.

Control system

The chemical dosing pump is sometimes controlled to activate and deactivate at specific intervals to provide precise dosing. One example is a central control system with chlorine, pH, similar sensors, and variable rate control to raise or lower the dosage level. Others range from a simple timer to a flow switch. A more complicated system for operations may also incorporate it.

What is a Dosing Pump?

A dosing pump can withstand harsh environments, such as extremely high pressures and temperatures. Starting with a set amount of water in its reservoir, a dosing pump will gradually add more water to a pipe or tank until the water is at the dosage level.

3 major types of chemical pumps used

Diaphragm pumps

This is a positive displacement pump that makes use of a reciprocating diaphragm to transfer liquids-gas and liquid mixtures. There’s a need for more maintenance for these pumps in comparison to others. Additionally, the risk of fluid contamination and oil vapor leakage is eliminated. This is because they do not have any lubrication, seal, or internal wear components.

Positive displacement pumps

A variety of rotary pumps are available, including piston pumps, screws, gear, and rotary vane. When it comes to pumping fluids with high pressure and viscosity, positive displacement pumps outperform centrifugal pumps. Also, these positive displacement models can handle fluids with low vapor pressure. These are more difficult to pump since they move slower, producing greater resistance.

Centrifugal pumps

Typically the most cost-effective option, centrifugal pumps are the most prevalent kind of pump. The pumps create a vacuum by sucking liquid into an impeller. Not preparing it properly could result in low suction power, one drawback of this pump.

Chemical gear pumps

Low-viscosity fluids, such as food, industrial chemicals, polymers, pharmaceuticals, hot melt adhesives, prepolymers, and many more, have specific process requirements that they should meet.

These accurate transfer gear pumps are an economical way to increase pressure and stabilize output. They can also handle viscosities ranging from 100 to 250,000 cPs and differential pressures up to 1000 psi. Closely controlled tolerances ensure precise and consistent volumetric production. PSI’s revolutionary, patent-pending lip seal is ideal for adhesive and melt-blown applications. It also performs leak-free in a wide variety of pressures and viscosities, even when placed under vacuum.

Type of pump used for chemical injection

There are two main types of chemical injection pumps: those that run on electricity and those that run on gas. The diaphragm and the piston are the two primary kinds of gas-driven pumps. Pneumatic CIPs are another name for these pumps. Though they use different mechanisms to propel the molecules, they are functionally equivalent.

Chemical injection pumps might be any of several kinds. There are two main types of chemical injection pumps: those that run on electricity and those that run on gas.

Injection pumps that run on gas or pneumatic power

The diaphragm chemical pump and the single-head, gas-powered positive displacement pump are two examples. The stroke length is proportional to the gas injection volume.
Metering pumps are versatile enough to handle both water and chemical injections. Their ability to operate at high pressures makes them ideal for averaging continuous flow rates. Diaphragm pumps are the most effective metering tools for preventing leaks. Because they are precise and leak-proof, diaphragm pumps are superior. This makes them more efficient and extends their useful life.

Electric Chemical Injection Pumps:

Although they differ in motor and power, electrical chemical injection pumps are piston-driven and have a common design element. By keeping the system’s gas vents sealed, piston-driven injection pumps aid in operations. Current electric chemical injection pumps are ideal where electricity is unavailable, such as in rural regions. From a financial and ecological standpoint, they are an excellent substitute for pneumatic chemical injection pumps.

Plunger pumps for chemical injection

A packed plunger pump applies pressure to the plungers to inject a predetermined chemical into a process. The amount of chemical injected is determined by multiplying the volume per stroke by the number of strokes per minute. Each stroke injects the required amount of chemicals.

The flow rate of a dosing pump

You can better plan the system’s design if you have a rough notion of the target flow rate. A poor investment in the long term would be installing a chemical dosing pump that is either too big or too small for the job if the necessary flow rate needs to be accurately calculated.

Before you can order the correct pumps, you must determine the following three things:

The amount of fluid that must be moved during a given time frame
The amount of space the fluid must fill
Is the fluid you’re pumping clear or thick? Do you know how hot the fluid being pushed is? Etc.

Your industrial requirements will determine these three factors. The amount of fluid you wish to transfer dictates the pump’s flow rate. The maximum allowable flow rate is quite sensitive to the fluid type and the distance traveled. Thus, the necessary pump type and size depend highly on all three parameters.

Conclusion

Many different types of businesses rely on dosing pumps. Accurate fluid supply is essential for process control and product quality assurance, making it possible. Contact us immediately if you have any questions regarding our chemical dosing pump range or would like to talk about your project with one of our technical experts.

Mar 01

How to Choose a Chemical Dosing Pump

By Antony Muya | Pumps | No Comments

For various industries, the production process relies on the precise and correct dosage of chemicals. A product might undergo a radical transformation or become inherently dangerous with just a small adjustment to a single chemical. Dosing chemicals accurately on such a large scale is beyond the capabilities of humans. Consequently, a chemical dosing pump is essential.

A chemical dosing pump is specifically engineered to consistently and precisely inject a predetermined amount of chemical substances into a gas, steam, or water flow. Choosing the best chemical dosing pump can be difficult due to the variety of options available.

Here’s how to choose a chemical dosing pump

If you want your chemical dosing pump to work as efficiently as possible while keeping your system secure and experiencing as little downtime as possible, choose it carefully. When selecting a chemical dosing pump, it is important to keep in mind the following details:

Identifying your needs

You should know exactly what you’ll use the dosage pump for before buying it. For efficient dispersion, you should know the medications or chemicals you will be utilizing, the amount of substance provided, and the required pressure. Using this information, you can select a chemical dosing pump that meets your needs regarding accurate supply ability and capacity.

Materials for construction

Numerous materials help in the production of a chemical dosing pump. Use heavy-duty pumps constructed of materials that can withstand the test of time if your pumps are intended to handle extremely corrosive chemicals in their daily operations.

Fluid temperature

Dosing pumps, such as diaphragm-type pulse injections or peristaltic pumps, should only be chosen after knowing the dose and temperature requirements of the fluid. Due to the high volume and frequency of fluid pumping, this insignificant detail could become a major issue if appropriate components aren’t utilized.

Knowing the pressure

The dosing pump’s inlet and outlet are affected by more than just temperature. Accurate measurement of the pressure level is necessary to select the appropriate equipment. So, the foundation of liquid dosing is selecting pumps capable of handling the required pressure range.

Technical features

When selecting a chemical dosing pump, consider the necessary technical features. Reliability, precision in supply quantity adjustment, working pressure, durability, supply flow rate, and power are all aspects of a pump that must be considered. Make sure the chemical dosing pump you choose can handle the conditions by selecting qualities that are important to you.

Should a leak occur?

Leaks, especially in industrial equipment like big dosing pump settings, are common over time. A common reason for this is using a dosing pipe unsuitable for the fluid or the fluid’s corrosive characteristics.

More recent dosing pump versions automatically notify the operator when a leak is detected, including leak protection options. Such alert and control mechanisms are typically absent in earlier versions or in cases where the quality of the metering pumps purchased is compromised. Equipment that stays too hot until the leak is found might render the system inoperable. This leads to additional production downtime costs.

Some metering pumps allow you to control the flow rate remotely. This can prevent the introduction of large amounts of unnecessary chemicals into the treated fluid. Other pumps have alarms built into the diaphragm head or are signal-controlled.

Pumping fluid types

Thinking about the fluids you’ll pump is an important factor in preventing corrosion, wear, and tear. If you need to pump a slurry, a thick mixture of solids and liquids, you should get pumps with specialized injectors, diaphragms, and other parts.

Viscosity does matter

A fluid’s viscosity indicates its resistance to warping at a specific rate. When a fluid is very thick and sludgy, with the possibility of semi-solids or solids, it is said to have high viscosity. For distilleries and water treatment plants, this is of paramount importance. This is because it has a profound impact on the final product.

A powerful dosing pump with long-lasting components is essential for any business that deals with thick or muddy water or fluids.

Working conditions

Think about the things to which they could be exposed while working. Because of this, there are feed pumps that can endure the most extreme conditions. These pumps have characteristics such as stroke brackets and chemically resistant housing and are completely enclosed and encapsulated.

Calculate costs

Before you buy a chemical dosing pump:

Figure out how much money you have to spend.
Think about how much you’ll spend on the pump in the long run, especially on future part replacements, maintenance, and running costs.
Consider the total costs during the usage time, not just the initial fee.

Look at user opinions and reviews

You should read user reviews and ratings of the chemical dosing pump you’re considering before buying it. This will give you a general idea of how well and reliable the product is. Feel free to ask previous users for their thoughts and experiences.

What runs the chemical dosing pump

Whether or not your chemical dosing pump is powered by the same source as your plant or factory is the most basic, yet often disregarded, consideration when selecting the appropriate pumps. The reason is that certain locations do not use any electricity at all, instead relying solely on standard thermal energy, solar power, or natural gas. Ideally, your plant would include connections for every possible power source. However, in practice, it is more common to need to verify that the pump is compatible with the specific power source you intend to use.

Common applications for a chemical dosing pump

There are a variety of industrial applications for chemical feeding pumps. This is because of their capacity to handle high fluid volumes. Numerous industries rely on chemical dosing pumps. These include mining, pharmaceuticals, power generation, horticulture, food processing, oil and gas, breweries, and agriculture.

Disinfection and oxidation
Relocating activated sludge for use in subsequent treatments
Control smell in advanced treatment
Incorporating fluoride into the water distribution system
Keeping the pH within a predetermined range

4 Pumps often used in the chemical industry

Turbine

As a last resort, businesses often use turbine industrial pumps. The toothed impellers, which resemble turbines, effortlessly transport chemical liquids. They cannot handle fluids containing solid particles despite their efficiency and adaptability.

Positive Displacement

Industrial pumps like these spin on a central shaft. In other words, they have a rotating vane, piston pumps, gears, and screws. Compared to centrifugal pumps, positive displacement pumps are far more effective at transporting chemical fluids with high viscosities. The reason is that they produce large pumping pressures.

Diaphragm

The chemical industry also receives a substantial amount of these pumps from the top distributors of liquid handling equipment. Chemical liquids move using a reciprocating diaphragm, even though it is a positive displacement pump. Nevertheless, these have an important benefit. Their availability in plastic and metal forms makes them suitable for various substances.

Centrifugal

In particular, centrifugal pumps are widely used in the chemical sector. They are simple to use and quite effective. These pumps have a lower operating cost than the other three varieties, which is an additional perk.

This chemical pump type employs suction to drive liquids into a propeller. Cavitation is one possible drawback of centrifugal pumps. That may happen when the intake pressures are low. You may avoid this problem by getting these pumps from a reputable liquid handling equipment dealer.

Conclusion

Express Drainage Solutions offers a variety of chemical dosing pumps that are designed with reliability, quality workmanship, and innovation to meet your specific requirements, even for the most difficult chemical dosing tasks. These pumps are perfect for precisely dosing chemicals into water streams.

From day one, our top priority has been to provide our clients with first-rate service and cutting-edge water treatment technologies that meet or exceed all applicable national and international requirements. We promise to provide our customers with the highest quality products from reputable chemical dosing pump manufacturers. To discuss your chemical dosing pump requirements, contact our staff now. If you need assistance, our team of specialists is here to help.

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