Dust collector

Claim 2

A dust collector for venting silos for storage of pulverulent material comprising: an inlet section defining an internal through passageway, means on one end of said inlet section for connection to a vent opening in a silo, flange rim means on the other end of said inlet section; a filter section including a generally cylindrical support structure, having an upper and lower end, and flange rim means on the ends of said support structure, one of said flange rim means on said support structure contacting said flange rim means on said inlet section; cover means enclosing the upper end of said support structure, a generally cylindrical filter bag having an upper and lower edge, said bag internally sleeved within said support structure and in intimate contact therein in an unpressurized condition, C-clamps attaching said flange rim means on said inlet section and support structure- respectively to said support structure and said cover, whereby dust laden venting air will cause said bag to contact the interior of said support thereby trapping dust therein without bag overexpansion; and shield means associated with said filter section to prevent moisture from entering said filter.

Claim 3

The dust collector of claim 1 wherein said filter bag is secured having said upper edge clamped between said cover and said upper support flange rims and said lower bag edge clamped between said inlet and said lower support flange rims.

Claim 4

A dust collector for venting silos for storage of pulverulent material comprising: a frusto-conical inlet section defining a through passageway, the smaller end of said frusto-conical section adapted for connection at a vent opening in a silo and the larger end having a peripheral flange; a filter section internally communicating with said inlet section, said filter section including a generally cylindrical expanded metal support structure having a top and bottom end and a rim associated at each of said ends; a cylindrical filter bag internally sleeved in said support structure having upper and lower edges lapping said top and bottom rims; a cover member adapter to enclose said support''s top end; releasable clamp means respectively securing said cover and said upper bag edge to the rim of said top end of said support, and securing said lower bag edge and said rim of said support''s bottom end to said flange of said inlet section; and weather shield means in the form of a cylinder having a closed upper end, said shield having a diameter exceeding the diameter of said support structure and defining an annular passageway therewith, the inner side of said shield''s upper end disposed adjacent the outer side of said cover wherein venting air can pass from said silo through said inlet, filter bag, support structure and annular passageway to atmosphere and whereby said bag will be caused to contact said support upon pressurization thereby restraining and cleaning said bag.

Claim 5

A dust collector for venting silos for storage of pulverulent material comprising: a frusto-conical inlet section defining a through passageway, the smaller end of said frusto-conical section adapted for connection at a vent opening in a silo and the larger end having a peripheral flange; a filter section internally communicating with said inlet section, said filter section including a generally cylindrical expanded metal support structure having a top and bottom end and a rim associated at each of said ends; a cylindrical filter bag internally sleeved in said support structure having upper and lower edges lapping said top and bottom rims; a cover member adapter to enclose said support''s top end; releasable clamp means respectively securing said cover and said upper bag edge to the rim of said top end of said support, and securing said lower bag edge and said rim of said support''s bottom end to said flange of said inlet section; and weather shield means in the form of a cylinder having a closed upper end, said shield having a diameter exceeding the diameter of said support structure and defining an annular passageway therewith, the inner side of said shield''s upper end disposed adjacent the outer side of said cover wherein venting air can pass from said silo through said inlet, filter bag, support structure and annular passageway to atmosphere and whereby said bag will be caused to contact said support upon pressurization thereby restraining and cleaning said bag.

Claim 6

The dust collector of claim 3 further including fastener means for securing said shield to said cover.