Mixing and aerating device

Details Mixing and aerating device Mixing and aerating device

1974-09-27

1977-02-15

Coe, Philip R.

B01F 716

Patent

active

040079201

ABSTRACT:
A mixing and aerating device is disclosed involving an impeller having the shape of a circular symmetrical curved section mounted centrally on a shaft which is driven at a relatively high rate of speed in the mixing container. The curved section may be formed as a section of a hollow sphere, the frustum of a cone, a section of a hyperbola, or a cylinder. The preferred forms of mixing and aerating devices are positioned with their curved hollow concave surfaces faced downwardly into the mix, although nearly as effective results are obtained with their surfaces reversed, i.e., with the concave surface facing upwardly and their convex or non-concave surfaces facing downwardly. Improved results are obtained, particularly increased foaming action, by providing a plurality of openings near the peripheral edge of the impellers. Further, the concave section may comprise the whole or part only of the symmetrical circular impeller. Two or more impellers may be mounted on the driven shaft in axially spaced relation.

REFERENCES:
patent: 273084 (1883-02-01), Hoppes
patent: 580266 (1897-04-01), Franklin
patent: 1681464 (1928-08-01), Cameto
patent: 1754626 (1930-04-01), Holzhausen
patent: 2557564 (1951-06-01), Renner
patent: 3378141 (1968-04-01), Warman
patent: 3912237 (1975-10-01), Ostberg

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