Gas dust-removing filters

In a gas dust-removing filter of the kind including a filter casing provided with a vertical perforated partition which divides the casing into a clean gas chamber and a gas dust-removing chamber, and filter bags inserted horizontally into the gas dust-removing chamber through the perforations of said partition, each of said filter bags having an open end sealed at the clean gas side of said partition and a closed end supported on a rear wall of the casing, each of said filter bags being spaced apart from adjacent filter bags, said filter bags being provided with internal spacing elements for keeping apart the plane and parallel surfaces of each of said filter bags during the dust-removing operation, the improvement which comprises, parallel vertical guide members disposed in said gas dust-removing chamber and engaging the closed ends of said filter bags, each guide member being disposed between two adjacent filter bags, each guide member having a surface which slopes with respect to the rear wall of the casing and being secured to the rear wall of the casing, and support members which engage said guide members and are disposed so as to support the closed ends of said filter bags adjacent to the rear wall of the casing, the projection of said surface on the rear wall of the casing corresponding to the spacing between two adjacent filter bags, so that said filter bags are being held in a fixed position by said guide members and twisting thereof is substantially eliminated or reduced.