DEDUCTING DEVICE Russian patent published in 1998 - IPC

FIELD: material handling facilities; transportation of dusting materials with packing in open containers. SUBSTANCE: air permeable elastic hose secured on output end of conveyor. Hose accommodates telescopic chute in form of conical branch pipes mounted coaxially relative to each other and connected by flexible ties. Upper branch pipe is secured by its larger base on output end of conveyor, and lower output branch pipe, connected with elastic hose and lower branch pipe of chute is in contact with surface of material to be handled. Lower branch pipe is made conically cylindrical and is provided with contact lobe section of diameter greater than that chute and formed by several, for instance, four movable lobes moving apart under pressure of material and engaging with material and with electric switches of winch of cable-and-sheave system secured on output branch pipe. Cables of cable-and-sheave system are secured on output branch pipe, and sheaves are mounted on conveyor. EFFECT: provision of complete cleaning of air from dust, enhanced reliability of operation. 3 cl, 3 dwg