| 摘要 |
PURPOSE:To remove foreign matters blocking the pipeline on the suction side by back flowing by a method in which the suction side pipeline of a bladeless pump is led to the discharge side pipeline through a valve, and the diameter of the port of the suction side pipeline is equalized with that of the pump. CONSTITUTION:For a remover of soil deposit near the intake port of a dam or a river, a base ship 1 to be dragged from the ground's surface, a bladeless pump 2 provided on the base ship 1, a suction nozzle 4 on the suction side of the pump 2, a sludge feed pipe 5 on the discharge side of the pump, and the vertically movable cylinder 16 of the suction nozzle 4 are provided. The diameter of the port of the pump 2 is matched with that of the pipeline on the suction nozzle side. The pipeline 5 on the discharge side of the pump 2 is led to the pipeline 4 on the suction side of the pump 2 through a valve 23D. When foreign matters of larger sizes block the pipeline on the suction side, the valve is opened and fluid is back-flowed to remove the foreign matters. |
