| 摘要 |
A weir arranged on a longitudinal section of the bottom of an upwardly open path of conveyance, e.g. a centrifugal drum or a conveyor channel; the weir is formed of a membrane which divides off from the material being transported a pressure medium chamber which is arranged at the bottom of said path, extends transversely relatively to the direction of transport of the path and can be subjected to pressure by admission of a pressure medium. The membrane forming the weir can be stiffened to resist to considerable forces acting. |
