What is the working principle of the impeller pump

The impeller is installed in the machining casings and fastened to the pump shaft, which is directly driven by the motor. A liquid suction is connected to the suction pipe in the center of the pump casing. The liquid enters the pump through the bottom valve 6 and the suction pipe. The liquid discharge port on the pump casing is connected to the discharge pipe.

Before the pump is started, the pump casing is filled with the liquid being transported. After the pump is started, the impeller is driven to rotate at high speed by the shaft, and the liquid between the blades must also rotate. Under the action of centrifugal force, the liquid is thrown from the center of the machining impeller to the outer edge and gains energy, leaving the outer edge of the impeller at high speed and entering the volute pump casing. In the volute, the liquid decelerates due to the gradual expansion of the flow channel, and converts part of the kinetic energy into static pressure energy, and finally flows into the discharge pipe at a higher pressure and is sent to the required place.

When the liquid flows from the center of the impeller to the outer edge, a certain vacuum is formed in the center of the cnc machining impeller. Because the pressure above the liquid level in the tank is greater than the pressure at the pump inlet, the liquid is continuously pressed into the impeller. It can be seen that as long as the impeller rotates continuously, the liquid will be continuously sucked in and discharged.