Pulse cleaning system for dust filters

B - Operations – Transporting – 01 – D

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183/91

B01D 46/04 (2006.01)

Patent

CA 1257552

Abstract of the Disclosure A cleaning system for dislodging dust from the filter bags (30) of a dust filter (10) having dirty and clean air plenums (18) (16) separated by a tube sheet (14). The tube sheet (14) is divided into segments (22) each having filter bag openings (28) arranged in the same pattern. An air accumulator tank (36) which continuously receives compressed air is rotated in the clean air plenum (16) with a connected distribution arm (88) which applies air pulses to the filter bags (30) through discharge nozzles (89) arranged in the same pattern as the filter bag openings (28). A position sensor allows cleaning air in the tank (36) to be applied to the distribution arm (88) only when the arm is aligned above a segment with all nozzles centered on the filter bags (30). A quick acting diaphragm valve is combined with the air tank (36) to control air flow into the distribution arm (88) at a location adjacent to the arm to minimize the response time.

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