Snap-in assembly for bag filter

Claim 1

Bag filter apparatus including a filter housing enclosing a filter compartment having an inlet for gas to be filtered and an outlet for the exhaust of clean gas therefrom, an apertured tube sheet intermediate the inlet and outlet separating the filter compartment into an inlet compartment for dirty gas and an outlet compartment for clean gas, nozzle means positioned above each aperture of said tube sheet to exhaust a blast of compressed air thereto, an elongate filter bag having an open end thereof held against the periphery of each aperture of said tube sheet and a closed end depending perpendicularly therefrom, a flexible ring integral with each filter bag having a concentric groove therein interlocking with the periphery of an aligned aperture in the tube sheet, a bag support assembly adapted to maintain axially disposed segments of each filter bag continuously concentrie with said nozzle means, said support assembly comprising an elongate cage supporting each filter bag, an annular split collar connected to each cage having a radial stabilizing flange which contacts the upper side of said tube sheet around the periphery of each aperture, and a fitting having a venturi shaped collector coaxial with an annular skirt positioned and arranged in the split collar to expand said split collar outward against the flexible ring to hold it in a fixed position concentric with said nozzle means.