Gas and liquid contact apparatus – Contact devices – Rotating
Patent
1977-02-16
1978-04-25
Miles, Tim R.
Gas and liquid contact apparatus
Contact devices
Rotating
210219, 210220, 210242A, 239 23, 261 36R, 261120, 261DIG75, B01F 304
Patent
active
040863069
ABSTRACT:
An oxygenating centrifugal pump is primarily for circulating the aerated water in a culture pond for improving water quality. The centrifugal pump generally comprises a flat-bottomed cuplike vessel having a pair of floaters for floating said pump on a water and a plurality of pipy legs for locking the vessel in a bottom of the pond. An inner hollow cylinder closed at its top end is longitudinally and rigidly mounted through a bottom wall of said vessel, an umbrella-shaped diffuser is secured to a lower periphery of said cylinder and a motor driven shaft having an impeller at its lower end portion is longitudinally mounted in said cylinder to define a diffusing passageway between said diffuser and impeller. A plurality of uniformly spaced water intake slots are provided around a peripheral wall of the upper cylindrical portion, a cover plate having several air-intake ports therethrough is rigidly secured around an upper periphery of the upper cylindrical portion, and an air suction pipe is deeply inserted therein through one of the air-intake ports. In addition, a peripheral water spouting device and a suction pump are provided on the cover plate of the hollow cylinder for blowing out a large quantity of bubbles to eliminate a possible current leakage.
REFERENCES:
patent: 1976956 (1934-10-01), MacLean
patent: 1992451 (1935-02-01), Thurstensen
patent: 2077445 (1937-04-01), Wallace et al.
patent: 2116023 (1938-05-01), Gwidt
patent: 2825541 (1958-03-01), Moll et al.
patent: 3202281 (1965-08-01), Weston
patent: 3620512 (1971-11-01), Muskat et al.
patent: 3756578 (1973-09-01), McGurk
patent: 3846516 (1974-11-01), Carlson
Chiesa Richard L.
Miles Tim R.
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