TWO-BODY MULTI-STAGE CENTRIFUGAL PUMP

摘要

End seals of the shaft of the pump are arranged as a single quick-split module. This has a base bushing, it is placed on the shaft and connected by a pin to it. The bushing has a tightening unit for joint with the rim of the shaft through secondary sealing, as two round nuts, those are screwed on the shaft and the base bushing and fixed with bolt joint. The sealing module is connected to the covers of the pump through intermediate ring. This is pressed to the covers at the side of the outer cylindrical surface through elastic element, this is at the same time a secondary seal. At the side of the inner cylindrical surface the intermediate ring rests on the recess in the base bushing through springy metal washers. This makes possible self-centering for the end seal with respect to the shaft at mounting the last one on bridge bearings.