Device for secondary separation of grain in a combine harvester

Details Device for secondary separation of grain in a combine harvester Device for secondary separation of grain in a combine harvester

1990-02-16

1991-05-07

Novosad, Stephen J.

Crop threshing or separating

Separator

Axial

209 24, 209289, 460 82, 460100, A01F 1244, A01D 412

Patent

active

050132806

ABSTRACT:
The secondary grain separator comprises an outer drum (12) constituted by at least two successive perforated lengths (18, 20, 22) having different mesh sizes, a feed chute (24) at the upstream end of the drum for pouring substances into the drum for separation along a vertical tangent, a curved wall (14) situated inside the drum and running from the chute at least as far as the bottom of the drum and defining an annular gap (16) for receiving the substances to be separated, deflector fins (30) inside the drum and inclined relative to the drum axis, and a collecting volute (34) surrounding the drum and including radially extending partitions (40, 42) defining collecting channels (44, 46, 48) facing the various lengths of the drum.

REFERENCES:
patent: 413161 (1889-10-01), Beeman
patent: 772331 (1904-10-01), Baxter
patent: 3425423 (1969-02-01), McKenzie
patent: 3776242 (1973-12-01), Khan
patent: 4198802 (1980-04-01), Hensen et al.
patent: 4284086 (1981-08-01), Williams
patent: 4897072 (1990-01-01), Bestland
patent: 4915826 (1990-04-01), Nordhus

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