| 摘要 |
<p>This invention relates to tube filters of the kind comprising a housing divided by a perforated wall into a dust-removal space and a space for clean gas, and containing filter tubes which are attached to said perforated wall in a sealed fashion by the rims of their openings and are arranged to be cleaned periodically by counter-current scavenging from the clean gas side, said filter tubes being arranged in said dustremoval space, covering the holes in said perforated wall at their open ends, and being provided with an internal spacer member. The invention consists in that said spacer member of each said filter tube has passing through it a rigid support bar which is detachably connectable to a fixed part of said housing by means of a part which projects freely through the closed end of said tube, and in that said spacer member consists of at least one coil spring on a supporting framework supported by said support bar, and said at least one coil spring is connected to said support bar at a distance from said perforated wall and its end nearer the clean gas side is connectable, under tensile stress, to a perforated clamping flange situated on the clean gas side, between which and said perforated wall the rim of the opening in said filter tubes is clampable.</p> |
