Apparatus for filtering gases having a movable filter bag unit

Claim 1

A filter apparatus for the separation of gas from suspended solid particles by filter bags including a housing with a filter chamber therein, said filter chamber having a first chamber into which particle laden gas is introduced, a second chamber from which cleaned gas is withdrawn after suspended solid particles have been removed by said filter bags, a releasable filter bag unit movable in and out of said filter chamber, said releasable filter bag unit including a gas impermeable filter bag support sheet forming a dividing wall between said first and second chambers, said sheet having a plurality of passages formed therein and a plurality of filter bags mounted thereon adjacent said passages and extending into said first chamber, and frame means supporting said sheet with the free ends said filter bags extending downwardly therefrom, and releasable sealing means on said housing aligned with said support sheet for securely holding said filter bag unit in said chamber and providing an airtight seal for said support sheet between said first and second chambers and wherein said housing has an inwardly extending shoulder about the interior thereof between said first and second chambers, said shoulder having a resilient sealing strip on the underside thereof; and wherein said support sheet has an upwardly extending peripheral flange adapted to engage said resilient sealing strip on said shoulder to provide a seal between said first and second chamber and wherein said housing has a pair of eccentric rods mounted internally thereon on opposite sides of the filter chamber, said rods being rotatable and positioned under said support sheet for pressing said support sheet into engagement with said sealing strip to hold said unit securely in place in the filter chamber, said rods being movable to an open position to release said support sheet and to form a guide for the underside of said support sheet for conveniently moving the unit out of the filter chamber and wherein said frame means has power driven lifting means thereon engaged with said support sheet for moving said support sheet into sealing engagement with said sealing strip and for engagement by said rods in the closed position.