Bag-type filter with air diffuser tubes of helical construction

Details Bag-type filter with air diffuser tubes of helical construction Bag-type filter with air diffuser tubes of helical construction

1980-08-18

1981-10-27

Prunner, Kathleen J.

Gas separation

With nonliquid cleaning means for separating media

Cohesive filter media cleaning

55341R, 55379, B01D 4604

Patent

active

042971152

ABSTRACT:
A bag-type filter apparatus, whose elongate tubular filter bags are supported by tubular cages therewithin, is provided with an air diffuser tube extending longitudinally within each tubular cage for diffusing and distributing a periodic reverse purge air flow throughout each filter bag to dislodge from the exterior surface of each filter bag particulate material which normally collects on the filter bags. Each air diffuser tube is formed from a perforate strip of helically wound sheet metal, adjacent edges of which are interconnected by a seam in which such adjacent edges overlap each other in interlocking relationship so that the seam extends helically around the respective air diffuser tube.

REFERENCES:
patent: 2828017 (1958-03-01), Ronningen et al.
patent: 3538687 (1970-11-01), Pausch
patent: 3594992 (1971-07-01), Carr et al.
patent: 3680285 (1972-08-01), Wellan et al.
patent: 4097255 (1978-06-01), Samolis
patent: 4231770 (1980-11-01), Johnson, Jr.

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