Patent ID: 6432153
Filing Date: 2002-08-13
Classification: B01D

Abstract:
A dust collector filter cleaning system comprising a housing, a plurality of filters mounted in said housing, a compressed air pipe mounted in said housing, a plurality of apertures provided in a wall of said compressed air pipe for pulse firing a jet of air into said filters, a plurality of venturis mounted in said housing between the compressed air pipe apertures and the filters, each venturi comprising a pair of spaced plates having faces extending tangentially to said compressed air pipe, an end portion of the face of each plate being fixedly connected to said compressed air pipe, the opposite end portions of the faces of the plates diverging outwardly relative to each other, said divergent opposite end portions being integral with a parallel medial portion, to thereby provide a throat portion communicating with said plurality of apertures in said compressed air pipe, at least one opening provided in the face of each plate in proximity to the air pipe apertures, the space between the faces of said plates providing an opening at each end of said venturi, whereby upon pulse firing a jet of compressed air through the compressed air pipe apertures, large quantities of air are induced through the open ends thereof, increasing the air mass and velocity, to thereby increase the impact effectiveness on cleaning the filters.