Abstract: In a dust filter baghouse which employs a small-diameter filter cartridge, the same attachment structure is adapted for installation of the cartridge from either below or above the baghouse tube sheet. The cartridge has an annular cap having an external bead which is received within an annular recess of a skirt portion of a hollow boot which is clamped to the cap of the cartridge and extends up to the tube sheet. Where the cartridge has to be installed from below the tube sheet, a cylindrical cup is provided having an inward flange at its upper end which is secured to the tube sheet. The cylindrical cup has an annular external recess which receives an annular internal bead on the hollow boot. Where the cartridge is installed from above the tube sheet, an external annular groove in an outwardly extending flange at the upper end of the hollow boot is received within the peripheral edge of the hole in the tube sheet.

Abstract: A filter cartridge is suspended from a baghouse tube sheet by an array of generally vertical spring metal fingers which are welded to the upper edge of the filter cartridge. Each of the fingers has an inward projection, a bag cup having an external annular groove is suspended from the tube sheet. The filter cartridge is installed by pushing it upwardly toward the tube sheet. When the lowermost edge of the bag cup is engaged by the inward projections on the fingers, the fingers are cammed outwardly and the inward projections ride on the wall of the bag cup until they come into registry with the annular groove in the bag cup at which time they snap into the groove, thus latching the filter cartridge. A hosetype clamp secures the filter cartridge after it has snapped into latched position.

Abstract: In a reverse-air dust collector, each of a plurality of small-diameter filter cartridges is suspended from the baghouse tube sheet in registry with one of the tube-sheet openings by a cap adhesively secured to the filter cartridge and a collar having a shoulder adhesively attached to the cap. The collar has an outwardly flared rim and a depending annular portion which is press fitted into a double-beaded outwardly-spring-biased fabric cuff which is positioned between the depending collar portion and the edge of the opening in said tube sheet. The upper bead of the cuff rests on and is supported by the tube sheet. The rim of the collar rests on and is supported by the cuff.

Abstract: An attachment structure for attaching a small-diameter dust-collecting filter cartridge to the underside of a baghouse tube sheet comprises two bag cups are coaxially aligned but inverted with respect to each other. The upper bag cup has an internal flange at its upper end. The lower bag cup has an internal flange at its lower end. The other ends of the two bag cups face each other in spaced-apart relation. An external circumferential groove is provided near each of the other ends.The internal flange of the upper bag cup is riveted to the underside of the tube sheet. The internal flange of the lower bag cup is bonded to an upper collar of the filter cartridge. A single sleeve of heavy rigid rubber material embraces the spaced-apart grooved other ends of the bag cups. The sleeve has a pair of spaced-apart annular internal beads which are received within the circumferential grooves of the two bag cups.

Abstract: Mechanical shaker assembly for filter bag supporting beams which eliminates problems involved with conventional shaker assembly linkage due to variations in the dimensions of the linkage members or the location of the bag suspension beams. The assembly includes horizontal beams mounted at their ends in bearings and the beams receive shafts attached to one end of the beams. Support hangers are attached to depend from the beams and the hangers are each connected to the upper end of a filter bag. Each of the shafts has attached thereto a lever arm and opposed lever arms are connected at their ends to length adjustable tie-rods. At least one of the lever arms is also connected by a length adjustable crank arm to a motor driven crank or eccentric.

Abstract: A bottom removal type of filter bag assembly for reverse blow-back type dust collectors is mounted on a permanent support structure that is welded in place to a depending integral collar portion of the dust collector tube sheet. The permanent support has a stepped diameter wall structure having a reduced upper end portion for force fit insertion in the tube sheet collar and having an intermediate shoulder to engage axially against the end of the collar.