Self-priming centrifugal pump

Details Self-priming centrifugal pump Self-priming centrifugal pump

F - Mech Eng,Light,Heat,Weapons

04

D

103/113

F04D 9/04 (2006.01)

Patent

CA 1135994

Abstract of the Disclosure A self-priming centrifugal pump comprises an impeller mounted on a shaft and forming part of a main pump section, and a priming rotor operating in the manner of a side channel of liquid-ring pump mounted rigidly on the same shaft and operating and forming part of a priming section. A suction side of the priming section communicates through a first permanently-open passageway with a first region on a suction side of the main pump section where gas to be drawn off collects. The suction side of the priming section also communicates through a second permanently-open passageway with a second region of the main pump section which, during normal operation, is at a higher pressure than the first region. Both the first and second passageways are so designed that in normal operation a stream of liquid sufficient to coo] the priming section flows from the second region pump to the suction side of the priming section and from there to the first region.

318584

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