Centrifugal Pump With Auxiliary Impeller for Taking Suction on Shaft Side of Impeller Plate to Reduce Seal Leakage
Original Publication Date: 1983-Jul-01
Included in the Prior Art Database: 2005-Feb-07
The rotor of a centrifugal pump is provided with a set of auxiliary impeller blades on the shaft side of the impeller plate. The auxiliary impeller tends to pump fluid from the closed area of the pump casing where the shaft seal is located, and this suction reduces the leakage of the shaft seal.