FIELD: agriculture.
SUBSTANCE: invention relates to agriculture. During the grain crops harvesting with the grain harvester, performing the grain crop mowing by the harvesting machine, its threshing in the threshing device and the grain separation from the straw and chaff, with subsequent spreading of the latter over the field. Additionally separating the light impurities in the form of dust and weeds seeds in the aspiration chamber and sending them to the crushing device. Air is cleaned on the filters and reused for the grain heap cleansing. Providing the dust and weed seeds supply to the aspiration chamber fan is installed behind the sieves under the straw-walker.
EFFECT: invention enables reduction in the harvested fields content of impurities.
2 cl, 2 dwg
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