Water pumps are very diverse and can be divided into the following categories according to different classification standards:
Classification by working principle:
Positive displacement pumps: including reciprocating pumps, piston pumps, plunger pumps, diaphragm pumps, etc., which transfer energy by changing the volume of the studio.
Blade pumps: such as centrifugal pumps, axial flow pumps, mixed flow pumps, etc., use the rotation of blades to transfer energy.
Rotary pumps: such as gear pumps, screw pumps, vane pumps, etc., transport liquids by rotation.
Classification by use:
Boiler feed pumps: used for water circulation in boiler systems.
Circulating water pumps: used in cooling systems and heating systems.
Sewage pumps: used for sewage treatment and discharge.
Clean water pumps: used for general water transportation.
Fire pumps: used for water supply in emergency situations.
Process pumps: used for liquid transportation in industrial processes. Classification by structure:
Centrifugal pump: single-stage and multi-stage, suitable for different head and flow requirements.
Axial flow pump: suitable for large flow and low head occasions.
Mixed flow pump: between centrifugal pump and axial flow pump, suitable for medium head and flow.
Gear pump: transports liquid through the meshing of two gears.
Screw pump: transports liquid through the rotation of the screw, suitable for high-viscosity liquid.
Reciprocating pump: transports liquid through the reciprocating motion of the piston or plunger.
Classification by special structure:
Self-priming pump: can self-prime in the absence of water.
Deep well pump: specially used for deep well water extraction.
Submersible pump: can work in water, suitable for groundwater treatment.
Vacuum pump: used to extract gas or liquid, often used in high vacuum technology.
These classifications help users choose the right type of water pump according to specific needs to ensure its effective operation in different application scenarios.