The working principle of centrifugal pump

Centrifugal pump is mainly composed of impeller, shaft, pump shell, shaft seal and sealing ring. General centrifugal pump before starting the pump shell should be filled with liquid, when the prime mover drives the pump shaft and the impeller to rotate, the liquid on the one hand with the impeller for circular motion, on the one hand under the action of centrifugal force from the impeller center to the periphery, the liquid obtained from the impeller pressure energy and velocity energy. As the liquid flows through the volute to the outlet, part of the velocity energy is converted into static pressure energy. When the liquid is thrown from the impeller, the central part of the impeller causes a low pressure area, which forms a pressure difference with the pressure of the suction liquid surface, so the liquid is constantly sucked and discharged at a certain pressure.