Chemical pumps are widely used in industrial and municipal water supply and drainage, as well as in farmland and orchard irrigation and drainage, to transport clean water or other liquids with similar physical and chemical properties.

Chemical pumps are categorized as follows:

I. Based on the material used, chemical pumps are categorized as follows:

1) Chemical pumps (stainless steel) are widely used in the petroleum, chemical, metallurgical, synthetic fiber, food, and synthetic fiber industries to transport alkaline and corrosive media;

2) Chemical pumps (fluoroplastic) are used to transport any acidic or alkaline corrosive media;

3) Chemical pumps (cast iron) are used in industrial and municipal water supply and drainage, as well as in farmland and orchard irrigation and drainage, to transport clean water or other liquids with similar physical and chemical properties.

II. A detailed description of chemical pump classifications based on their application:

1) Process pumps: These include feed pumps, reflux pumps, circulation pumps, flushing pumps, sewage pumps, replenishment pumps, and output pumps.

2) Utility Pumps: These include boiler pumps, cooling tower pumps, firefighting pumps, and deep-well water pumps.

3) Auxiliary Pumps: These include lubricating oil pumps, sealing oil pumps, and hydraulic transmission pumps.

4) Pipeline Pumps: These include pumps for oil pipelines and truck loading and unloading.

III. Classification by Working Principle and Structure:

1) Vane Pumps: These pumps use the rotation of the pump shaft to drive various impeller blades, imparting centrifugal or axial force to the liquid, thereby transporting the liquid into a pipe or container. Examples include centrifugal pumps, vortex pumps, mixed-flow pumps, and axial-flow pumps.

2) Positive Displacement Pumps: These pumps utilize the continuous change in the volume of the pump cylinder to transport liquid. Examples include reciprocating pumps, piston pumps, gear pumps, and screw pumps.

3) Other Pump Types: These include electromagnetic pumps, which use electromagnetic force to transport liquid conductors; and pumps that utilize fluid energy to transport liquids, such as jet pumps and airlift pumps.

IV. Classification by Transport Medium:

1) Water Pumps: including clean water pumps, boiler feed water pumps, condensate pumps, and hot water pumps.

2) Corrosion-Resistant Pumps: including stainless steel pumps, high-silicon cast iron pumps, ceramic acid-resistant pumps, impermeable graphite pumps, hard-lined rubber pumps, rigid polyvinyl chloride pumps, shielded pumps, diaphragm pumps, and titanium pumps.

3) Debris Pumps: including slurry pumps, sand pumps, sewage pumps, pulverized coal pumps, and ash pumps.

4) Oil Pumps: including cold oil pumps, hot oil pumps, submersible oil pumps, slurry pumps, and liquid hydrocarbon pumps.

V. Classification by Operating Conditions:

1) High-flow and low-flow pumps: Flow rates of 300 m³/min and 0.01 L/min, respectively;

2) High-temperature and low-temperature pumps: High temperatures up to 500°C and low temperatures down to -253°C;

3) High-pressure and low-pressure pumps: High pressure up to 200 MPa, vacuum levels of 2.66-10.66 kPa (20-80 mmHg);

4) High-speed and low-speed pumps: High speed up to 24,000 rpm, low speed 5-10 rpm;

5) Metering pumps: Flow rate accuracy up to ±0.3%;

6) High-viscosity pumps: Viscosity up to several thousand Pa·s