Liquid purification or separation – Structural installation – Geographic
Patent
1987-07-02
1988-05-03
Therkorn, Ernest G.
Liquid purification or separation
Structural installation
Geographic
210219, 210220, 2102422, 261 87, 261120, C02F 700, B01F 304
Patent
active
047418257
ABSTRACT:
An apparatus for use with propeller type aspirating aerators for preventing the formation of vortices near an aerator propeller in a substance in which the propeller is driven. The device comprises a mobile floatable shield which floats on the aerated substance and eliminates a vortex by being drawn into one by the vortex's own swirling motion and contacting the vortex. The shield may be flexibly attached to a frame which also houses the aerator. Because the shield is not connected to the aerator, floats on the surface and is mobile, many of the problems faced with the prior art devices have been eliminated: the shield is easier and cheaper to manufacture; material does not wedge between the aerator and the shield; any problems with the shield are visible; the shield stops virtually all vortices; and vibration problems are eliminated.
REFERENCES:
patent: 1632758 (1927-06-01), Fulweiler
patent: 3191394 (1965-06-01), Avery
patent: 3193260 (1965-07-01), Lamb
patent: 3794303 (1974-02-01), Hirshon
patent: 4193951 (1980-03-01), Stanley
patent: 4240990 (1980-12-01), Inhofer et al.
patent: 4268398 (1981-05-01), Shuck
Hitachi Sparotor Brochure.
Aeration Aire-O.sub.2 Aerator Mounting Options Guide.
Boyd, New Aeration Tests May Provide Better Basis for Comparison, Aquaculture Magazine, (May-Jun. 1982).
Aeration Industries, Inc.
Therkorn Ernest G.
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