BACKWASHING DEVICE OF DUST COLLECTOR

PROBLEM TO BE SOLVED: To provide a backwashing device provided in a dust collector demonstrating the sufficient backwashing effect over a long period, without causing problems of lowering of durability nor noise generation. SOLUTION: In the backwashing device 1 removing dust attached to the outer periphery of a filter medium 100 by jetting compressed air from the inside of the cylindrical filter medium 100 disposed in the dust collector, an air pipe 10 is extendedly provided inside the filter medium 100 to roughly coincide with the central axis of the filter medium 100, a plurality of jetting ports 15, 16 jetting compressed air from a compressed air feed line 50 connected to base ends are provided on the outer periphery of the air pipe 10 so that the air jetted from the jetting ports 15, 16 impinges on the whole inner periphery of the filter medium 100. COPYRIGHT: (C)2010,JPO&INPIT