| 摘要 |
<p>The invention concerns an assistance device for screening and declogging the screen cloth of a screen comprising a vibrating structure and in contact with the screen cloth by a wave generator, in particular ultrasound waves. Said structure consists of a part (4) having a cross-section with an inverted L-shape with a base (5) and a shoulder (6); said base (5) lower surface (8) is connected to the generator (7) and at least the shoulder end and preferably the upper surface (9) including the shoulder (6) is in integral contact with the cloth (3). The vibrating part can comprise two shoulders, in integral contact with the cloth overlapping on either side of the base.</p> |
