When the pump is filled with liquid, the impeller rotates at high speed under the drive of the driving machine, and the blade drives the liquid to rotate and produces centrifugal force. Under the action of centrifugal force, the liquid is flung out of the center of the blade from the center to the four sides, and is sent through the volute into the discharge tube.
During the rotation of the impeller, one side continuously suck the liquid, and the other side continuously drains the inhaled liquid. So the liquid is transported to the working place under the action of pressure and speed.