| 摘要 |
Method and apparatus for separating, from a liquid flow (60), solid particles entrained in the flow. A grid screen (10) is disposed in the liquid flow and is provided with spaced-apart bars which trap the particles, there being thereby formed so-called screenings. A first, lower scraper member (40) is disposed for a reciprocal vertical movement along the screen grid and abuts, during its upward stroke, against the grid, screenings collected against the screen grid conveyed to a shoulder like portion (22) for temporary storage of the screenings. A subsequent, upper scraper member (50) conveys the screenings in a direction towards a receptacle (70). The screenings are de-watered when in position on the shoulder-like portion and, as a rule, also as a consequence of being moved in a direction towards the receptacle along a slip plate (21). The construction comprising more than one screening members reduces vertical space requirements and makes possible the individual adaptaton of the scraper members to meet prevailing functional demands. |
