Working principle of centrifugal pumps

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The working principle of a centrifugal pump is that the liquid inside the impeller is pushed by the blades, causing it to rotate together with the blades. The centrifugal force generated by rotation causes the liquid to move from the center outward, gaining an increase in kinetic energy. At the periphery of the impeller, the liquid is flung into the volute-shaped flow channel. As the liquid velocity decreases, part of the kinetic energy is converted into pressure energy, which enables continuous flow outward to overcome the resistance in the discharge pipe. The liquid at the impeller’s inlet is flung outward, creating a low pressure (or vacuum) at that inlet. This creates a pressure difference with the surface of the liquid in the suction tank; as a result, the liquid in the suction tank is continuously forced into the impeller’s inlet by the pressure at the surface of the liquid (usually atmospheric pressure), thereby enabling continuous pumping. Boshan District **has partnered with China Net Warehouse Group to establish the China Pump Industry Network, a promotion platform for the pump industry specific to the people of Boshan.