| 摘要 |
A filter device for air or gas purification purposes incorporates partly, at the very least, a porous and preferably pleated filter pipe (1); and partly a large amount of flexible, oblong elements (6) arranged within this which are designed to automatically become agitated with the help of flow-gas travelling in the pipe, and thereby effecting a mechanical processing of the filter pipe under the resistance of prior filling of this. External to, and at a distance to, the first named filter pipe (1), a second filter pipe (7) is arranged which, like the first filter pipe, delimits a ring shaped column (9) which is filled with an absorption material (10), active carbon for example.<IMAGE> |
