Self priming gear pump

Details Self priming gear pump Self priming gear pump

1982-05-28

1984-11-06

Vrablik, John J.

Rotary expansible chamber devices

With plural working fluid inlet or outlet passages

418180, 418206, F04C 218, F04C 1500

Patent

active

044809700

ABSTRACT:
A self priming gear pump 14 for pumping liquids containing gases is provided with a vent pipe 26 for releasing entrapped gases that would otherwise collect at the outlet side of the pump 14. The vent pipe 26 terminates within the pump housing 21 at a zone which is out of the path of the oil centrifuged by the gears 25 and in the region lying near the point of intersection of the gears 25. An additional inlet pipe 27 which directs liquid across the main inlet into the gap between the periphery of one of the gears 25 and the housing 21 may be provided to improve liquid sealing.

REFERENCES:
patent: 3280756 (1966-10-01), Gordon
patent: 3526470 (1970-09-01), Swanson
patent: 4090820 (1978-05-01), Teruyama
patent: 4097206 (1978-06-01), Schonherr

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