CLEANING DEVICE FOR A COMBINE HARVESTER AND A COMBINE HARVESTER Russian patent published in 2020 - IPC A01F12/44 

FIELD: machine building.

SUBSTANCE: present invention relates to cleaning device (4) for combine harvester (1), comprising at least one fan (13), a sieve frame, made with possibility of its being brought into oscillatory movement, which contains at least one upper sieve (14) and one lower sieve (15), located in the sieve frame at a distance from each other, and at least one section (28) of the channel, guiding the air flow provided by the fan, at an angle from the bottom from the bottom in an upward direction towards the lower side of the upper sieve and the lower sieve, under each of the sieves, lower sieve (15) and upper sieve (14), there is at least one air guide element (32, 40), which has opposite end surfaces (34, 42) arranged opposite to each other and without sharpened areas and at least one lateral surface (33, 41) connecting them to each other, wherein said surfaces have different radii (R₁, R₂, R₃) of curvature relative to center (M) of cross-section of air guide element (32, 40), note here that radii of curvature (R₁, R₃) of end surfaces (34, 42) are larger than radius (R₂) of curvature of, at least, one lateral surface (33, 41).

EFFECT: disclosed is a cleaning device for a combine harvester and a combine harvester.

11 cl, 5 dwg