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The structure of liquid ring vacuum pump

Feb. 08, 2018

A liquid ring vacuum pump has an impeller with blades attached to a center hub, located in a cylindrical body, but off-set from the center.

The impeller sits between two end plates (port plates) which have shaped holes cut into them called ports.

The pump requires a liquid (also called the sealant) to create vacuum. Prior to starting the pump, it should be partially filled with the liquid sealant (typically to the center of the body, although this can be plus or minus a couple of inches). The liquid can be water (making it a water ring pump), oil or a solvent, depending upon the application. When the pump is at rest, some of the impeller blades are immersed in the sealant liquid.

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liquid ring vacuum pump

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