GRAIN CLEANING DEVICE FOR TWO-PHASE THRESHING COMBINE FOR SEPARATELY OBTAINING SEEDS OF FIRST AND SECOND FRACTIONS WHEN HARVESTING SOYBEANS Russian patent published in 2023 - IPC A01F12/44 A01D41/12 

FIELD: agriculture.

SUBSTANCE: grain cleaning device of a two-phase threshing combine for separately obtaining seeds of the first and second fractions when harvesting soybeans contains a receiving beater (1), the first and second threshing drums with concaves (5 and 6), a post-threshing device (7), a straw walker (8), the first main and second transport boards - screens (9 and 19), sieve mill with first and second louvered sieves (10 and 11), fan (18), first and second slope boards (13 and 15), two grain augers (12 and 14) with elevators (2 and 3) for supplying seeds and commercial grain, a bunker consisting of two parts for the first seed fraction and the second commercial grain. On the first half of the sieve frame of the combine and below the louvered sieves (10 and 11), a punch sieve (16) with oblong holes is installed, separating the soybean grain separated in the first half of the combine cleaning into a whole, which goes into the first grain auger (12), and crushed along cotyledons and finely crushed grain, which along the first pitched board (15) enters the second grain auger (14) of the second grain fraction.

EFFECT: increase in the germination rate and quality of the first seed fraction obtained directly in the combine.

1 cl, 1 dwg