DEVICE FOR GRAIN SEPARATION IN GRAIN COMBINE HARVESTER Russian patent published in 2017 - IPC A01F12/44 

FIELD: agriculture.

SUBSTANCE: grain combine harvester comprises an axial separating device including at least one rotor mounted in a casing with the possibility to rotate and move the crop from the front end to the rear end along a spiral path. Rotors can be used for threshing the crop before separating the grain. The rotor casing comprises a grate allowing the separated grain to fall through it under the action of gravity. Two reverse conveyors are located one behind the other below the grate. The first reverse conveyor is located under the front part of the separating device and is made with the ability to grip and transfer part of said separated grain forward to the first front edge, where the grain falls under the action of gravity into the first section, above which there is a chute grain board. The second reverse conveyor is located under the rear part of the separating device and is made with the ability to grip and transfer part of said separated grain forward to the second front edge, where the grain falls under the action of gravity at a distance behind from the first section. The chute grain board is made with the possibility to move the collected grain backwards to the cleaning unit.

EFFECT: effective stratification of the agricultural crop material on a chute grain board, which improves the grain cleaning quality.

7 cl, 3 dwg