Aeration system

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F04D 31/00 (2006.01) B01F 3/04 (2006.01) B01F 5/16 (2006.01) B01F 13/06 (2006.01) F04D 7/04 (2006.01) F04D 29/10 (2006.01) F04D 29/22 (2006.01) F04D 29/42 (2006.01)

Patent

CA 2232735

A centrifugal pump (10) having a rotatable impeller (30) that operates to drain liquid into the intake (32) of the pump. An air-introduction passage (72) connects with a subatmospheric pressure region at the back (36) of the impeller. Air introduced through this passage is mixed with a portion of the fluid pumped, and the air-fluid mixture is expelled as the discharge of the pump.

Pompe centrifuge (10) équipée d'un rotor (30) tournant pour faireentrer du liquide dans la partie admission (32) de la pompe. Un conduit (72) servant à introduire de l'air est relié à une zone dans laquelle la pression est inférieure à la pression atmosphérique située à l'arrière (36) du rotor. L'air qui arrive par ce conduit est mélangé à une partie du fluide pompé, et le mélange air-fluide est expulsé par le passage de sortie de la pompe.

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