APPARATUS FOR ABRASIVE-POWDER DESCALING OF ROLLED STOCK Russian patent published in 1997 - IPC

FIELD: descaling of cylindrical rolled stock. SUBSTANCE: apparatus includes working chamber, additional chamber, unit for pumping abrasive powder to working chamber from receiving hopper, system for circulating and dedusting powder. Said working chamber has input openings for descaled rolled piece and abrasive powder and output duct for rolled piece and powder mixed with scale. Additional chamber is joined with output duct of working chamber and it has output opening for rolled piece. System for circulating and dedusting powder includes unit for pumping gas flow and pipeline. One end of pipeline is arranged in additional chamber, joined with pumping unit and provided with output high-pressure nozzle. Pipeline is connected with hopper. Other end of pipeline is arranged in additional chamber and provided with input low-pressure nozzle. EFFECT: improved design. 2 dwg