| 摘要 |
A self-cleaning filter including a filter housing (2) having at least a raw-liquid inlet (4), a clean-liquid outlet (6), and a filter medium (8) interposed between the raw-liquid inlet and the clean-liquid outlet, has at least one nozzle (10) which is located in proximity to the filter medium (8) and is connectable to at least two different sources of pressure (HP,LP), one of which pressures is higher than the pressure prevailing in the filter, the other one being lower than the pressure prevailing in the filter. There is also provided an arrangement (16,18,20,22) to produce a relative movement between the filter medium (8) and the at least one nozzle (10) to effect coverage of a substantial part of the surface area of the filter medium by the nozzle. <IMAGE> |
