Water ring type pump with sidewall water reflux passage

Details Water ring type pump with sidewall water reflux passage Water ring type pump with sidewall water reflux passage

1994-05-25

1995-11-07

Bertsch, Richard A.

Pumps

One fluid pumped by contact or entrainment with another

Contact or entrainment within rotary impeller

F04C 1900

Patent

active

054643295

ABSTRACT:
In a water ring type vacuum pump, an impeller (6) having a plurality of blades (6a) is rotatably provided in a pump chamber (3) communicating with an air inlet (1b) and an air outlet (1d), and a water inlet (1a) for feeding sealing water to a center portion of the pump chamber is further provided. Sealing water that has moved to a peripheral wall portion (3a) of the pump chamber (3) flows back to a center portion (3b) of the pump chamber (3). By this arrangement, the sealability of sealing water can be improved and the sealing water can be saved in amount.

REFERENCES:
patent: 3894812 (1975-07-01), Huse
patent: 4545730 (1985-10-01), Lubke
patent: 4637780 (1987-01-01), Grayden

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