AERODYNAMIC ENRICHING OF BULK MATERIALS Russian patent published in 1994 - IPC

FIELD: bulk material enrichment. SUBSTANCE: aerodynamic unit has charge vibrating bin with screens. The screens are mounted to aerodynamic tubes provided with pneumatic blowers. The tubes have baffle shelves, pressure pickups, flowmeter and perforated outlet nozzles which are put into a dynamic separation vibrating chamber. The chamber has perforated suction means, L-shape corrugated baffle shields and dividing baffle shields which are arranged to be telescopic. At the lower part of the vibrating chamber a bin is disposed for substandard bulk materials. The bin is provided with discharge pipes having magnetic rotors with removable knives and with conveyors. The dynamic separation vibrating bins are arranged in a cascade and attached by air duct to a suction system via jet duct to a suction system via jet dust catchers. The unit is controlled by the control desk. The number of floors depends on the type of the bulk material. EFFECT: enhanced efficiency. 4 cl, 1 dwg