| 摘要 |
A method and a filter are indicated which filter is cleaned periodically, preferably during continuous running of the filter, by rotating the filter element (26) placed in the filter housing (1) around its axis of symmetry (12) which is congruent with a rotatable axle (16). Means are provided for periodically rotating the axle (16), for collecting separated particles from the filter housing (1), and means (22-25, 34-39) are provided to produce a releasable pressure cushion seal between a first part (5) and a second part (6) of the filter housing (1), said parts (5, 6) being placed on each end of the filter element (26), whereby the pressure cushion seal can be formed by the flow of the purified medium. In an embodiment the pressure cushion seal can be produced by moving the filter element (26) away relatively from contact with a contact surface (4), which devides the filter housing (1) into said first part (5) and second part (6). |
