Stirring element for stirring gases into liquids

Details Stirring element for stirring gases into liquids Stirring element for stirring gases into liquids

1997-12-10

1999-05-18

Cooley, Charles E.

Agitating

Stirrer within stationary mixing chamber

Rotatable stirrer

261 93, 416175, 416183, 416203, 416228, 416237, B01F3/04;7/26

Patent

active

059044233

ABSTRACT:
A stirring element (10), especially a gasing stirring element for stirring liquids and introducing a gas, preferably air, to the liquids. The stirring element has a hub (12) for attachment to a stirring shaft and a support disk (14) joined to the hub (12), a plurality of stirring blades (16) being attached to a peripheral edge of the support disk (14). To achieve a low output power coefficient, each stirring blade (16) is made of a wedge-shape that is directed in the direction of rotary motion of the stirring element (10). Preferably, radially inner end sections (22, 24) of two sides (18, 20) of the stirring blade (16) are angled relative to sides (18, 20) outwardly with reference to the direction of rotary motion of the stirring element (10). The stirring element (10) simplifies gas feed and prevents clogs. By providing the support disk (14) with a conical shape having a ring of teeth (26) on its outer edge, a uniform distribution and good dispersion of the gas bubbles is obtainable.

REFERENCES:
patent: 2043940 (1936-06-01), Van Thiel
patent: 2308751 (1943-01-01), Guthrie et al.
patent: 2384952 (1945-09-01), Miller
patent: 3100628 (1963-08-01), Norris, Jr.
patent: 3604690 (1971-09-01), Traelnes
patent: 5198156 (1993-03-01), Middleton et al.
patent: 5246289 (1993-09-01), Middleton et al.

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