The utility model relates to elements of combine harvesters designed for threshing and separation of grain, in particular to sieves for combine harvesters. The louvre sieve contains rotary plates installed in the frame on the axes one after the other, each of the plates has upper and lower parts located on different sides of the axis of rotation. The upper part of the plate is made flat and contains a comb along a longitudinal edge, the petals of which are made in the form of segments, and is also equipped with teeth located between the petals of the comb and bent down from the plane of the plate and towards the bottom of the plate. The teeth are made with the formation in the cross section of a bulge directed towards the bottom of the plate. The lower part of the plate consists of two shelves, the first shelf lies in the same plane with the upper part of the plate, and the second shelf is bent down. The first shelves of the lower parts of the plates contain through closed openings made and arranged to accommodate and move the teeth of the adjacent rotary plate in them. Improved cleaning quality. 7 c.p. f-ly, 7 ill.
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