Venturi pipe attachment structure and filter fabric attachment structure of bag filter device

摘要

A bag filter apparatus comprising: a venturi pipe attachment structure for reducing the burden on an induction ventilator and facilitating elimination of adhesion dust on an upper portion of a filter bag on which a venturi pipe is located; and an untreated A filter fabric attachment structure for preventing leakage of gas is provided.;In a bag filter device in which a filter medium 1 and a clean gas chamber 4 are partitioned by a partition plate 3 and a plurality of filter cloths 2 attached to the partition plate 3 are arranged in the filter chamber 1, Venturi tube 7 provided at the upper part of the filter cloth has a cavity 8 at the periphery thereof and is provided in partition plate 3 so that the inside of filter cloth 2 and clean gas chamber 4 communicate with cavity 8 and venturi tube 7 And the upper edge portion of the cylindrical color 25 is attached to the peripheral edge forming the filter attachment attachment opening 31 of the partition plate 3 and the color 25 is provided with a predetermined interval The pawl body 25a for falling prevention and the pawl body 25b for preventing float are inwardly protruded and the upper end of the filter cloth 2 is attached to the recess 25c formed between the projections.