Vacuum priming system for centrifugal pumps

Details Vacuum priming system for centrifugal pumps Vacuum priming system for centrifugal pumps

1994-08-26

1996-07-16

Freay, Charles

Pumps

Diverse pumps

Priming and venting

417200, F04B 2308

Patent

active

055361471

ABSTRACT:
A self-priming pump system including a vacuum priming unit and a liquid pumping unit, the pumping unit having an engine driven centrifugal pump with an intake conduit, the priming unit having a vacuum column with an internal well chamber and a vacuum chamber above the well chamber with an interconnecting gas relief passage, the well chamber having liquid level sensors to detect the water level in the well chamber and activate a vacuum control valve connecting a vacuum pump to the vacuum chamber when the water level in the well chamber falls below a predetermined level, the control valve switching to seal the vacuum chamber and connect the vacuum pump to atmosphere when a predetermined level of water is detected in the well chamber.

REFERENCES:
patent: 2883936 (1959-04-01), Daddario
patent: 3121397 (1964-02-01), Daddario
patent: 4249865 (1981-02-01), Sloan
patent: 4515180 (1985-05-01), Napolitano

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