The principle of circulating water vacuum pump is different from the vacuum pumping principle and jet suction device, it belongs to the centrifugal mechanical pump. In the cylindrical pump housing eccentrically mounted impeller rotor, the blade is forward-bending type. When the impeller rotates, the working water forms a water ring swirling along the pump casing under centrifugal force. Due to the eccentric position of the impeller, the relative movement of the water ring relative to the blades causes the space volume between two adjacent blades to periodically change, Liquid "piston" in the cascade for radial reciprocating operation. Circulating Water The vacuum pump's water ring needs to be continuously replenished with new cold water to maintain a stable water ring thickness and temperature, primarily because the working water is discharged with the compressed gas. Water ring in addition to the role of liquid piston, there are systolic pressure process, between the impeller and the gas distribution plate, shaft seals and so on. Corresponding to a water ring thickness of the actual working temperature and the layout of the air outlet are several major factors. On the amount of pumping, work efficiency and reachable vacuum play a decisive role.
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