| 摘要 |
A vacuum collecting vessel is useful for collecting flushing water for cleaning sewer networks or plants for treating rainwater. Sections of sewers prone to heavy deposit formation can be flushed not only sporadically but at regular intervals with flushing water alone (waste water, ground water or the like). No mains connection is required. Flushing water is sucked under vacuum into a space (10) of variable volume between a lower base (1) and an upper extensible lid (3) of the vacuum collecting vessel. The space (10) contracts automatically on emptying. |
