FIELD: agriculture.SUBSTANCE: invention relates to devices for cleaning grain and products of its processing, namely air separators with a closed cycle of air flow, and can be used in agricultural production, in flour-elevator, cereals and mixed feed industry, in farms, as well as for the separation of loose building mixtures. Grain-aspirator contains a body in the upper part of which two fans are located opposite each other with suction nozzles and outlet diffusers, connected to the discharge channels, the air supply channel, the pneumatic separation zone, the precipitation chamber, a hopper for receiving bulk material, a profiled channel, a grain flow regulator, a louver separation grating. In addition, the grain-aspirator comprises at least two jet formers, located in the air supply channel, at least two shelves of a louvre separation grid with grain scatterers, a drum-trap for hard-to-impregnate impurities, placed above the precipitation chamber, a brush installed close to the drum-trap, a suction fan of
