| 摘要 |
FIELD: separation of grain materials from light admixtures; grain processing industry. SUBSTANCE: proposed method is realized by means of device including unit for dividing air flow into separate jets and separating grain material which is made in form of system of passages at variable volume connecting grain supply passage with light fraction discharge unit; passages of variable volume are bounded at the top by guide vanes and by vibration planes at the bottom, thus forming surface permeable for grain and air under which settling chamber for grain material fractions is located ; it is made in form of vibration planes forming surfaces tight for grain and air; device is provided with air duct connecting the area of revolving blades - source of motion of air flow and louver drum mounted in light fraction discharge unit. Grain supply passage, area of revolving blades, heavy fraction settling chamber, light fraction discharge unit and air duct form air-recalculating route. EFFECT: enhanced efficiency; reduced power requirements; extended field of application. 3 cl, 1 dwg
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