Patent ID: 8303682

Claim:
A support structure for a filter bag for filtering gas, the filter bag having a general longitudinal direction and including a filter material adapted to be arranged on the outer side of said support structure, said support structure comprising: a plurality of elements extending in said longitudinal direction from a first end to a second end, wherein the second end is an opposite end to the first end of said support structure, said plurality of longitudinally extending elements including one or more tubular pipe elements, a plurality of substantially annular elements, each annular element being located in a transverse plane perpendicular to the longitudinal direction and connected to the plurality of longitudinally extending elements, and said annular elements being located at a distance from each other in the longitudinal direction, and a connecting device adapted to receive a valve for draining off a cleaning fluid from inside the filter, said connecting device being located at the second end of the support structure and being connected to at least one of said longitudinally extending tubular pipe elements, said valve being adapted to be activated and/or de-activated by control means in said one or more longitudinally extending tubular pipe elements.