Aerator and conversion methods

Details Aerator and conversion methods Aerator and conversion methods

1991-11-04

1993-05-25

Miles, Tim

Gas and liquid contact apparatus

Contact devices

Rotating

261120, 2611212, 2102422, B01F 304

Patent

active

052137180

ABSTRACT:
An aerator for gasifying a body of liquid comprising a centrifugal pump having a generally vertical axis. The pump comprises a casing having a generally axial liquid inlet opening generally upwardly, a liquid outlet, and an internal fluid flow space communicating the liquid inlet and the liquid outlet. A centrifugal impeller is rotatably mounted in the space and operative to move fluid into the liquid inlet, through the space, and out the liquid outlet. A motor is operatively associated with the impeller to rotate it. The pump defines a cavitation zone in the fluid flow space adjacent a central portion of the impeller. The pump is adapted to maintain a disposition of its casing with the liquid inlet so opening generally upwardly below the surface of the liquid and capable of taking in both liquid from the body and also taking at least enough gas from an area outside the liquid to the cavitation zone so that the pump would surge if slightly more gas were taken.

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