Release date : 2023-12-20 16:44:04 　

The working principles of various pumps vary and can be mainly divided into two categories: positive displacement pumps and power pumps.
A positive displacement pump sucks in and discharges liquid by changing the volume of the working chamber. For example:
The piston pump and plunger pump change the internal volume of the cylinder body through the reciprocating motion of the piston or plunger, achieving the suction and discharge of liquids.
The gear pump forms a closed chamber through the meshing of two rotating gears, which allows for the suction and discharge of liquids.
The screw pump moves the liquid along the thread through the rotation of the screw, suitable for liquids with high viscosity and containing solid particles.
Power pumps rely on high-speed rotating impellers to generate centrifugal force to transport liquids. For example:
A centrifugal pump generates centrifugal force through the rotation of the impeller, pushing the liquid outward from the center of the impeller to achieve liquid transportation.
Mixed flow pumps and axial flow pumps use the design of impellers to gain kinetic energy during the rotation process of the liquid, which is then transported.
In addition, there are some special types of pumps, such as:
The water ring vacuum pump forms a water ring inside the pump casing through the rotation of the impeller, and uses the volume change between the water ring and the impeller to inhale and expel gas.
Pneumatic diaphragm pump uses compressed air to drive the diaphragm for reciprocating motion, suitable for conveying corrosive liquids or liquids containing particles.
These different types of pumps are widely used in various industrial fields, such as water conservancy, petrochemicals, urban water supply and drainage, according to their working principles and structural characteristics, to meet different fluid transportation needs.