SORTER FOR GRAINS,PULSES AND THE LIKE

摘要

A sorter for grains, pulses and the like having a perforated sorting plate mounted on a frame and both longitudinally and laterally inclined with respect to the horizontal plane and adapted to be vibrated in the longitudinal direction while being intermittently lifted toward the upper side. The perforated sorting plate overlies an air chamber into which pressurized air is introduced by a blower through an air duct. The perforated sorting plate is provided with a corrugated upper surface to define a multiplicity of ribs oriented in the direction perpendicular to the direction of vibration of the sorting plate and in parallel rows at a pitch not less than the size of the material to be sorted. A set of discharge openings for receiving the sorted material is provided at the lower end of the perforated sorting plate where the ribs terminate. Auxiliary air passages communicating with the space above the sorting plate are provided to permit removal of dust and other granular material of lower specific gravity than the grains being sorted.