Cleaner for a rotating screen on a harvester

Details Cleaner for a rotating screen on a harvester Cleaner for a rotating screen on a harvester

1994-08-18

1995-11-14

Melius, Terry Lee

Crop threshing or separating

Cleaner

With fan feature

55290, 460119, A01F 1254

Patent

active

054661897

ABSTRACT:
A self-cleaning device for filtering air in a harvester includes a venturi ejector connected to a source of pressurized air which, in a cotton harvester, includes the cotton handling system blower. The ejector includes nozzle, a vacuum chamber shaped to minimize dead air zones and eddy currents, and a diffuser section. The vacuum chamber is supported near a rotating air inlet screen to vacuum debris from the inlet side of the screen. The debris is drawn into the negative pressure air stream upstream of the nozzle and is positively directed away from the engine compartment and other components on the harvester. The engine cooling fan receives only screened air, and the use of a source of air which is independent of the cooling fan, as well as any separate screen cleaning fan, helps to retain maximum engine cooling capacity.

REFERENCES:
patent: 3837149 (1974-09-01), West et al.
patent: 4153436 (1979-05-01), Cozine et al.
patent: 4233040 (1980-11-01), Vogelaar et al.
patent: 4443236 (1984-04-01), Peiler
patent: 4542785 (1985-09-01), Bagnall et al.
patent: 4906262 (1990-03-01), Nelson et al.
patent: 5042237 (1991-08-01), Sanderson
patent: 5183487 (1993-02-01), Lodico et al.

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