What pumps do chemical plants have, what does it do, principle parts

According to the different materials of chemical pumps, their application fields are classified as follows: 1) Chemical pumps (stainless steel) are widely used in petroleum, chemical, metallurgy, synthetic fiber, pharmaceutical, food, synthetic fiber and other departments for transporting alkaline corrosive media; 2) Chemical pump (fluoroplastic) is used to transport any acidic, alkaline corrosive medium; 3) Chemical pumps (cast iron) are used for industrial and urban water supply and drainage, and can also be used for drainage and irrigation of farmland and orchards for transporting clean water or other liquids with physical and chemical properties similar to clean water. According to the different uses of chemical pumps, their classification is described in detail:

1) Process pumps: including feed pumps, return pumps, circulating pumps, flushing pumps, sewage pumps, supplementary pumps, output pumps, etc. 2) Utility Pumps:

Including boiler pumps, cooling tower pumps, fire pumps, deep well pumps for water sources, etc. 3）…

Chemical pumps, main centrifugal pumps, jet pumps, screw pumps, fire pumps, electromagnetic pumps, vacuum pumps, compression pumps, diaphragm pumps, metering pumps, submersible pumps, self-priming pumps, hydraulic pumps, pipeline pumps, gear pumps.

There are generally two types of chemical pumps commonly used: centrifugal pumps and reciprocating pumps. There are others:

Gear pumps, piston pumps, reciprocating pumps, diaphragm pumps, impeller pumps, pipeline pumps, jet pumps, vacuum pumps and so on. Chemical centrifugal pumps and diaphragm pumps are common chemical pumps at present. Centrifugal pumps (types of centrifugal pumps commonly used in chemical industry) According to the nature of the transported liquid, the centrifugal pumps commonly used in chemical production mainly include water pumps, corrosion-resistant pumps, oil pumps, submerged pumps, impurity pumps, and canned pumps.

Chemical pump range of use:

1.Chemical pumps are suitable for pumping corrosive liquids from bottles, drums, cylinders, pools or other containers.

2.The chemical pump has the advantages of stable and reliable performance, good sealing performance, beautiful appearance, easy use and maintenance. It plays a great role in improving product quality, reducing running, running, dripping and leakage to prevent pollution and improve the environment.

3.The chemical pump is suitable for chemical, petroleum, metallurgy, power station, food, pharmaceutical, synthetic fiber and other departments to transport various corrosive media or media with high physical and chemical properties.

4.Chemical pump products mainly include: various glass fiber chemical pumps, corrosion-resistant plastic pumps, high-temperature chemical pumps, standard chemical process pumps, magnetic drive pumps, chemical pumps, etc.

Chemical pumps are used to pump clean water, which contain abrasive, harmful substances to ordinary pump body materials, suspended, corrosive to stainless steel materials, and non-awesome substances.

Commonly used pumps in chemical industry include corrosion-resistant pumps, oil pumps, impurity pumps, submerged pumps, shielded pumps, etc.

1. Corrosion-resistant pump: As the name suggests, the corrosion-resistant pump is a pump with corrosion-resistant performance, which is mainly used for the transportation of corrosive liquids. It is a widely used pump in general-purpose equipment pumps.

2. Oil pump: The oil pump is a kind of pump that is both light and compact, and there are three categories: in-line, distribution and monolithic. The oil pump needs a power source to operate, and the camshaft at the lower part of it is driven by the engine crankshaft gear.

3. Impurity pump: The transmission mode of the pump is connected with the motor through the elastic coupling components. From the direction of the motor, the pump rotates in a clockwise direction.

4. Submerged pump: Submerged pump is a positive pressure conveying vertical pump, which can effectively solve the problems of gas resistance and cavitation. The explosion-proof level of the conveyed material determines that the submerged pump products have different structures, working principles, classifications, scope of application, product advantages and disadvantages and operation methods, which can be simply divided into two categories: traditional submerged pumps (explosion-proof in zone 1 outside the tank, non-explosion-proof in zone 0 in the tank) and new submerged pumps (explosion-proof in zone 1 outside the tank and explosion-proof in zone 0 in the tank).

5. Shielded pump: The drive of the ordinary centrifugal pump is to connect the impeller shaft of the pump with the electric shaft through the coupling, so that the impeller and the motor rotate together and work, while the shielded pump is a sealless pump, the pump and the drive motor are sealed in a pressure vessel filled with pumped medium, this pressure vessel is only statically sealed, and a wire group is used to provide a rotating magnetic field and drive the rotor.

There are centrifugal pumps, reciprocating pumps, piston pumps, magnetic pumps, I was interned in a chemical plant, reciprocating pumps, and centrifugal pumps see a lot, magnetic pumps are okay, piston pumps have not been used, the most common should be centrifugal pumps.

Depending on what kind of chemical plant it is, centrifugal pumps are mainly used to transport water, dilute liquids and the like, and the advantage is that the head is high and the flow rate is large. Progressive cavity pumps are mainly used to transport liquids with high viscosity, and their volume is large. Overall, centrifugal pumps are used with multi-point.

Stainless steel is acid and corrosion resistant.

What working conditions are required? It's just what kind of pump you use.

There are generally two types of chemical pumps commonly used: centrifugal pumps and reciprocating pumps. Chemical centrifugal pumps and diaphragm pumps are common chemical pumps at present.

Centrifugal pump (type of centrifugal pump commonly used in chemical industry).

According to the nature of the transported liquid, the centrifugal pumps commonly used in chemical production mainly include water pumps, corrosion-resistant pumps, oil pumps, submerged pumps, impurity pumps, and shielded pumps. Corrosion-resistant pumps are mostly small pumps, which are mainly used to transport corrosive liquids such as acid, alkali and concentrated ammonia, and it is also its corrosion-resistant characteristics, so corrosion-resistant pumps must be used when transporting these corrosion-resistant items; The oil pump is mainly used to transport petroleum products, so the sealing performance of the oil pump must be good. Submerged pumps have a wide range of applications, submerged pumps are often installed in liquid storage tanks, and they can also transport various corrosive liquids, however, submerged pumps have a disadvantage, that is, the efficiency is relatively low; The impurity pump is mainly used to transport some suspensions containing solid particles, thick slurry and other items, which has the characteristics of not easy to block, easy to disassemble, wear-resistant, etc., and there are many types of impurity pumps, including sewage pumps, sand pumps, mud pumps, etc.; Shielded pumps, also known as non-leakage pumps and sealless pumps, are mainly used to transport flammable, explosive, highly toxic or emitting substances, but their efficiency is also relatively low.

Pumps commonly used in the chemical industry are mainly centrifugal pumps, and others are: gear pumps, piston pumps, reciprocating pumps, diaphragm pumps, impeller pumps, pipeline pumps, jet pumps, vacuum pumps, etc.

A chemical process pump is a type of pump used to transport chemical fluids, and its working principle is based on the action of centrifugal force. Centrifugal force is generated by rotating the impeller, and the liquid is sucked in from the inlet, and finally discharged from the outlet through the rotation of the pump body and impeller. The following are the basic classifications and working principles of chemical process pumps:

Centrifugal Pump: Centrifugal pump is the most common chemical process pump, which works by creating centrifugal force through the rotation of the impeller to draw the liquid from the inlet and push it towards the outlet.

Piston pump: The piston pump uses the relative motion between the plunger and the pump cylinder to realize the transfer of liquid, and the plunger changes the volume during the reciprocating motion, thus producing a pumping effect.

Diaphragm Pump: The diaphragm pump uses the reciprocating motion of the diaphragm to achieve the suction and discharge of liquids. The vibration of the diaphragm is driven by compressed air or other power sources, so that the liquid reciprocates on both sides of the diaphragm.

Progressive cavity pump: Through the rotational motion of the screw, the progressive cavity pump draws the liquid from the inlet and pushes it along the screw cavity to the outlet. Progressive cavity pumps are suitable for conveying liquids with high viscosity and containing particles or fibers.

Magnetic Pump: The magnetic pump uses a magnetic coupling device to isolate the drive mechanism from the pump body, so as to achieve leakage-free liquid transfer. Through the action of magnetic force, the rotation of the driving mechanism rotates the magnetic rotor in the pump body to promote the flow of liquid.

The selection of the pump should be based on factors such as the specific process requirements, fluid properties, operating conditions and expected performance to ensure optimal operating results and safety reliability.

Chemical process pumps are widely used in the chemical industry.

In various fields, it has important uses in chemical, metallurgy, pharmaceutical, chemical foil and other industries. Chemical pumps also rely on centrifugal force.

To convey materials, the working principle is as follows:

Before the chemical pump works, the pump body and the feed pipe must be filled with liquid into a vacuum state, when the impeller rotates rapidly, the blades promote the liquid to rotate quickly, the rotating liquid material flies away from the impeller under the action of centrifugal force, and the water in the pump is thrown out, and the central part of the impeller forms a vacuum area. The liquid material is pressed into the feed pipe through the pipe network under atmospheric pressure. In this way, continuous conveying can be realized.

Before the chemical pump starts, the pump casing is filled with the liquid to be conveyed; After starting, after starting, the impeller is driven by the shaft to rotate at high speed, and the liquid between the blades must also rotate. Under the action of centrifugal force, the liquid is thrown from the center of the impeller to the outer edge and gains energy, leaving the outer edge of the impeller at high speed and entering the volute pump casing.

In the volute, the liquid is decelerated due to the gradual expansion of the flow channel, and part of the kinetic energy is converted into static pressure energy, and finally flows into the discharge pipe at a higher pressure and is sent to the place where it is needed. The liquid is made up of an impeller.

The center flows to the outer edge when in the leaves.

A vacuum is created in the center of the wheel, and the liquid is continuously pressed into the impeller because the pressure above the tank level is greater than the pressure at the pump inlet. It can be seen that as long as the impeller rotates continuously, the liquid will be continuously inhaled and discharged.

Classification of chemical process pumps.

Chemical process pump is a general term for various pumps in the chemical production process. There are many varieties of chemical process pumps, which can be divided into vane pumps according to their principle of action, such as centrifugal pumps.

axial flow pumps, mixed-flow pumps, partial flow pumps, vortex pumps, etc.; Volume.

Pumps, such as reciprocating pumps (including piston pumps.

Piston pumps, diaphragm pumps.

etc.); Rotary pumps (including progressive cavity pumps, liquid ring pumps, gear pumps.

Sliding vane pumps, roots pumps, radial piston pumps, etc.); Other types of pumps, such as jet pumps, solenoid pumps, water.

hammer pumps, etc. According to the production process or product characteristics, it can be divided into high-pressure methylamine.

pumps, cryogenic pumps, phosphoric acid slurry pumps, etc.

In chemical or petrochemical production, the pump works under high temperature, low temperature (or ultra-low temperature), high pressure, flammable, explosive, toxic and strong corrosion, and some are also in high inlet pressure, high head, high viscosity, small flow, and high steam.

Working under corrosion conditions puts forward quite strict requirements for the performance of chemical pumps, especially for corrosion resistance, inadmissibility (for toxic media) and wear resistance. In order to meet the special requirements of chemical production, in the chemical machinery industry.

It also specializes in the production of special pumps for chemical industry, such as plastic pumps, glass pumps, ceramic pumps, graphite pumps, and canned pumps.

Magnetic pumps, impurity pumps, etc.

Chemical pump is a kind of mechanical equipment used to transport various chemical substances, corrosive media and liquids, mainly used in petrochemical, metallurgy, pharmaceutical, food, water treatment and other fields. The main characteristics of chemical pumps are corrosion resistance, high temperature, high pressure, high efficiency, compact structure, easy operation, stable operation and high reliability.

According to their working principle and structural form, chemical pumps can be divided into centrifugal pumps, positive displacement pumps and other types of pumps. The centrifugal pump sucks the liquid into the pump through centrifugal force, and then pushes the liquid out of the pump body through the rotor rotation, its main characteristics are large flow and stable pressure, and it is suitable for transporting clean water, waste water, oil and some corrosive liquids in the middle of the shed. A positive displacement pump is a pump that works based on the principle of volume change, and its main feature is that the flow rate and pressure are stable, and it is suitable for conveying viscous liquids, highly solids liquids and corrosive liquids.

Technical standards for chemical pumps usually include parameters such as operating temperature range, pressure, flow rate, material, shaft seal type, noise, etc. At the same time, the design, manufacture, installation and use of chemical pumps also need to comply with relevant national standards and safety specifications.

Chemical pump is a national joint set of energy-saving pumps, pump performance, technical requirements, according to the international standard ISO2858 specified in the performance and size design, its advantages: the full range of water conservancy performance layout is reasonable, the user choice is wide, "rear open" structure, easy maintenance, efficiency and suction lift to reach the international advanced level. Chemical Pump Classification:

Stainless steel chemical pumps, plastic chemical pumps, fluoroplastic chemical pumps, electric chemical pumps, pneumatic chemical pumps.

Chemical pumps are used to transfer chemicals and are designed for corrosion resistance and abrasive industrial liquid fuels, paints, bleach, solvents, etc.

Chemical pumps can be centrifugal or positive displacement pumps depending on the application. The most common chemical centrifugal pump for rent and sale is the ANSI process pump, which is a single-stage end suction pump.

Many chemical pumps are also positive displacement pumps, progressive cavity pumps, utility pumps, diaphragm pumps, or piston pumps. These pumps are used to move liquid chemicals at high pressures.

We are accustomed to calling the pumps that are usually used to suction some corrosive and moderate media and chemical solvents and media as chemical pumps.

In the world, there are certain standard bricks for chemical pumps, which must meet certain design requirements and design specifications, and their own performance and structure must meet the specified standards.

Commonly used pumps in chemical industry are: process pumps: including feed pumps, return pumps, flushing pumps, sewage pumps, supplementary pumps, output pumps, etc.

Public works pumps: including boiler pumps, cooling tower pumps, fire-fighting pumps, deep well pumps for water sources, etc. Ancillary Purpose Pumps:

Including lubricating oil pumps, sealed oil pumps, hydraulic transmission pumps, etc. Pipeline pump: pump for oil pipeline, pump for loading and unloading truck, etc.

The chemical pump is an energy-saving pump jointly designed by the whole country, and the performance and technical requirements of the pump are designed according to the performance and size specified in the international standard ISO2858.

Its advantages: the layout of the whole series of water conservancy performance is reasonable, the user choice range is wide, the "rear open" structure, the maintenance is convenient, the efficiency and the suction lift have reached the international advanced level.

It is widely used in industry, urban water supply, drainage, and can also be used for drainage and irrigation of farmland and orchards, for transporting clean water or other liquids with physical and chemical properties similar to clean water.