How to choose the right chemical dosing pump

The selection of chemical dosing pump should be selected according to the parameter requirements and use requirements of the dosing pump, and the properties of the medium should also be considered, and the appropriate chemical dosing pump should be selected according to the actual situation.

The chemical dosing pump has different functions in different stages of liquid drug treatment, and is called a dosing transfer pump or a dosing circulating pump when transporting and circulating the liquid medicine; In the treatment of large flow liquid medicine, it is called magnetic dosing pump; In the treatment of small flow liquid medicine, it is called metering and dosing pump; When conveying flammable and explosive media, it is called a diaphragm dosing pump.

Features of Meibao Chemical Dosing Pump:

1. Chemical dosing circulating pump: that is, Meibao's anhydrous and air-suction acid-alkali resistant pump, which has the characteristics of 24-hour waterless and idling; The material has FRPP and PVDF, acid and alkali resistance, strong alkali resistance and strong corrosion resistance.

2. Chemical magnetic dosing pump: magnetic drive, no shaft seal design, completely leak-proof, will not cause environmental pollution caused by chemical liquid leakage. It is suitable for the transportation of various chemical liquids, and the operating temperature of the water pump:

PP CFRPP -75°C, CPVC -80°C, PVDF -90°C The specific selection depends on the properties of the chemical solution.

3. Stoichiometric dosing pump: the use of tooth energy deceleration, long service life, low maintenance cost, low production cost. This metering pump is a reciprocating diaphragm metering and dosing pump, which is small in size and saves installation space.

Each unit is equipped with a foot valve check valve, which has better sealing. Equipped with stainless steel base to ensure the motor, waterproof and durable, more beautiful appearance, is a small dosing pump with low flow and high pressure.

4. Chemical diaphragm dosing pump: no electricity, explosion-proof characteristics, can transport flammable and explosive media. There is no moving seal, it can be run dry, and it will not cause damage to the pump.

No impeller, low shear force, not easy to damage the material structure. It is submersible, mobile, flexible and convenient to install, and easy to maintain. It can convey high-consistency and high-viscosity media.

It can convey strong acid, strong alkali, strong organic solvent and other media. The flow rate and head can be adjusted by changing the air intake volume and pressure.

Meibao Chemical Dosing Pump Product Display:

Dosing pumps can be divided into dosing metering pumps.

1.Determine the pressure. The rated pressure of the selected dosing pump should be slightly higher than the actual higher pressure required, generally higher than 10 20Don't choose too high, too much pressure will waste energy, increase the investment and operating costs of the equipment.

2.Determine the flow rate. The selected dosing pump should be equal to or slightly larger than the flow required by the process, and the use range of the dosing pump is better in the rated flow range of the dosing metering pump of 30 100.

At this time, the heavy early base compound of the dosing pump is high in precision. Considering the economy and practicality. It is recommended that the actual required flow rate of the dosing pump be 70 90 of the rated flow rate of the metering pump.

3.Determine the pump head material. After the specific model and specifications of the dosing pump are determined, the material of the overflow part is selected according to the properties of the overflow medium, which is very important, if the selection is improper.

It will cause corrosion of the medium, damage to the overflow parts or leakage of the medium, and contaminate the system. In severe cases, Wu Ying may also cause major accidents.

1. You can choose any kind of metering pump for conveying landslide PAM, but it should be in the working range of each metering pump. You can choose a piston metering pump, PAM has no special properties, it will not cause corrosion to the pump, etc.

2. If the measurement accuracy of the fruit dosing is relatively high, you can choose a mechanical diaphragm or a hydraulic diaphragm, which can be equipped with a stainless steel pump head, considering the economy, or a plastic pump head.

3. When the flow pressure is not very large, the electromagnetic diaphragm metering pump can be selected for complete noise, which is economical and applicable.

1. Determine the pressure: the rated pressure selected should be slightly higher than the actual maximum pressure required, generally higher than 10 20. Don't choose too high, too much pressure will waste energy and increase the investment and operating costs of equipment or equipment.

2. Determine the flow rate: The selected metering pump flow rate should be equal to or slightly greater than the flow rate required by the process. The use range of the metering pump flow rate is better in the rated flow range of the metering pump 30 100, and the repeatability of the metering pump is high at this time.

Considering the economy and practicality, it is recommended that the actual required flow rate of the metering pump is selected as 70 90 of the rated flow rate of the metering pump.

3. Determine the material of the pump head (hydraulic end): after the specific type of the metering pump is determined, select the material of the overflow part according to the attributes of the overflow medium, this step is very important, if the choice is not appropriate, it will cause the medium to corrode and damage the overflow parts or the medium leaks and pollutes the grinding mass. In severe cases, it can also cause major accidents.

Because of its acid and alkali corrosion resistance, small flow rate, adjustable and other characteristics, dosing metering pumps are widely used in exhaust gas treatment, sewage treatment, power generation, electronics, petroleum, chemical and other industries. This time, Meibao has sorted out some selection methods for dosing metering pumps, so please take a look at it below.

1. Pressure: The rated pressure of the selected dosing metering pump should be slightly higher than the actual higher pressure required, generally higher than 100 to 20 per 100 mu, do not choose too high, the pressure is too high will waste energy, increase the investment and operation cost of the equipment.

Second, the flow rate: the selected dosing metering pump should be equal to or slightly greater than the flow required by the process, the use range of the dosing metering pump in the rated flow range of 10% to 100% is better. At this time, the repeatability of the dosing metering pump is high, considering the economy and practicality, it is recommended that the actual required flow rate of the dosing meter is selected as 70% to 90% of the rated flow rate of the dosing metering pump.

3. Pump head material:

After the specific model and specification of the metering pump are determined, the material of the overflow part is selected according to the properties of the overflow medium, this step is very important, if the selection is not done properly, it will cause the medium to corrode and damage the overflow parts or the medium leakage and pollute the system, etc., and may also cause major accidents in serious cases.

In addition to the above selection factors, it is also necessary to pay attention to the appropriate suction height of the dosing metering pump, which should be properly considered, of course, there are some other requirements to pay attention to, such as: analog control, pulse control, flow monitoring and timer.

The chemical pump is a water pump used to transport strong and weak acid and alkali media, strong oxides, organic solutes, and corrosive media.

1: The chemical agents conveyed by the chemical agent pump generally include sulfuric acid (containing sulfide), hydrochloric acid (hypochlorous acid), nitric acid, chromic acid, hydrofluoric acid, phosphate potato cultivation acid, sodium hypochlorite, acetic acid, oxalic acid, lactic acid, ammonia, seawater, methanol, phenol and other acid-base media.

2: The chemical pump is mainly used for conveying, lifting, circulation, unloading, unloading, dosing, etc., with the characteristics of acid and alkali resistant pump, corrosion resistance and no leakage.

3: The materials of chemical pump are PP, PVDF, FRPP, stainless steel, fluoroplastic, etc. Generally, FRPP material is selected at room temperature, and PVDF material is selected at high temperature.

For high temperature and high concentration or other corrosive media in the middle of the shooting, 316 stainless steel or fluoroplastic pumps can be selected. It can be selected according to the specific use process.

4: When choosing a chemical pump, it will be selected according to the site conditions, head and flow.

The chemical drugs are generally single-stage, single-suction fluoroplastic alloy chemical centrifugal pumps. It is designed and produced in accordance with international standards and combined with the processing technology of non-metallic pumps. The pump has the advantages of corrosion resistance, friction resistance, high temperature resistance, no aging, high mechanical strength, no toxin decomposition, wide use temperature, and the temperature of the conveying medium is generally -80 degrees Celsius to 240 degrees.

It is widely used in chemical, pharmaceutical, petroleum, electric power, metallurgy, electroplating, and pesticides. In industries such as papermaking, processes such as wastewater treatment and acid addition are conveyed.

The chemical pump is mainly used for circulating and discharging the exhaust gas from the sewage tank through the collection pipeline to the acid scrubber. Chemical pumps are widely used in chemical scrubbers, washing and deodorization systems, chemical water treatment and other processes, including acid, alkali, salt, nitric acid, phosphoric acid, hypochlorous acid and other media, so in the selection of materials, it is necessary to use plastic materials with acid and alkali resistance.

1. The plastic pump is divided into horizontal and vertical type, and the general scrubber uses a vertical pump, and the vertical pump is installed in and out of the tank. Horizontal pumps have circulating magnetic pumps and circulating self-priming pumps.

3. Chemical magnetic pump: no shaft seal design, completely leak-proof, will not cause environmental pollution due to leakage of chemical liquid. And use the two-stage energy efficiency motor to save electricity in the process of use.

4. Chemical vertical pump: dry liquid seal design, reverse design of impeller, and oil seal design of bearing end cover can protect the motor from acid gas and corrosion, and prolong the service life of the motor and pump.

A chemical dosing pump is a water pump that transports a variety of chemical liquids. Generally, there are metering dosing pumps, quantitative dosing pumps, and liquid dosing pumps.

Precautions for the use of chemical dosing pumps:

1.When using the chemical dosing pump, do not arbitrarily change the chemical properties of the conveying, because the mixing of different chemicals will produce various different chemical changes, and even the chemical reaction will produce high heat, damaging the pump body. If you have any questions about chemical compounding, please consult a professional.

2.There are many chemical properties, which can cause great harm to the human body, and personnel should try to avoid dangerous areas.

3.Before starting the power supply, check the correct position of the pipeline and valve, then start the power supply, and check whether the liquid discharge is normal at any time.