How does a centrifugal pump work?
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A centrifugal pump operates by using the rotation of an impeller to generate centrifugal force on water. Before starting the pump, it is necessary to fill both the pump casing and the suction pipe with water. Then the motor is started, causing the pump shaft to drive the impeller and the water to rotate at high speed. Under the effect of centrifugal force, the water is thrown toward the outer edge of the impeller and gathers inside the pump casing, flowing through the flow channels in the volute-shaped casing into the pressure pipeline of the pump. At the same time, a vacuum is created at the center of the water pump impeller as water is thrown out, and under atmospheric pressure, the water in the water intake tank is drawn into the impeller through the suction pipe. As the impeller keeps rotating, water is continuously thrown out and then replenished. This results in the continuous water delivery by the centrifugal pump.
This is also our general understanding of the working principle of centrifugal pumps. Regarding the vacuum zone mentioned here, I would say it should refer to a region of relatively low pressure; does a vacuum actually form there? I hope everyone can give some guidance