PULSE JET FABRIC FILTER

摘要

A gas filter (10) which includes a clean gas section (13) and a dusty gas section (12) separated by a porting plate (14) which includes concentric rings of ports (15) providing gas communication between the two sections. The ports (15) have connected thereto respective filter media sleeves (16) for collecting contamination held in suspension in the gas being filtered. In order to clean the filter sleeves (16) there is provided a back flushing gas pulse generator (18) which is connected directly to a housing body (11) of the filter apparatus (10). The gas pulse generator (18) includes a release valve (56) in direct communication with an outlet tube (22) which leads to a gas pulse distributor (19) having arms (23, 24) which sweep across the clean gas section side (13) of the porting plate (14). The arms (23, 24) of the gas pulse distributor (19) include nozzles (25) aligned with the respective ports (15) of the porting plate (14) so as to inject into the filter media sleeves (16) a pulse of clean gas in a reverse direction to the flow of the gas stream so as to blow out any contaminants that have been collected in the sleeves.