A pump that uses the centrifugal force generated by the rotation of an impeller to transport liquid is called a centrifugal pump.
Its working principle is that when the pump body is filled with liquid, the impeller rotates to generate centrifugal force. Under the action of centrifugal force, the liquid is thrown from the center to the edge of the impeller, obtaining velocity energy and being discharged. At this time, the pressure at the center of the impeller decreases, and the liquid continuously flows from the pump's suction port to the center of the impeller. After the discharged liquid enters the diffusion tube, the cross-section increases, the flow rate decreases, and the pressure increases. The impeller can give the electric energy of the motor to the liquid during movement, and the liquid obtains energy to increase the pressure. This is the working principle of centrifugal pumps.
