| 摘要 |
A rinsing apparatus (1) projects a curtain of water (5), for example to clean a conveyor belt in the paper industry, with the thickness (9) of the curtain (5) being defined between a fixed lip (7) and a lip (8) on a movable bar (14). A preponderant pressure in a rear chamber (16) repels the movable bar (14) to bear against micrometric stop screws (19). When the pressure in the rear chamber (16) is relieved, the pressure of liquid in the front chamber (12) repels the movable bar (14) and enlarges the gap (9). Impurities are thus automatically removed. In another embodiment, the bar (14) is movably carried by piston stems slidable in the fixed lip and in the rear structure of the apparatus, fluid pressure being directed onto the ends of the stems to move the bar (14). <IMAGE> |
