| 摘要 |
PURPOSE:To enable to recover muddy water from a remote liquid supply source, by extending a water drawing pipe to the liquid supply source, and extending a discharge port of a submergible pump to the outside of a separation tank. CONSTITUTION:A suction hose is connected to a water drawing pipe 3 and it is extended into a liquid supply source 4. Similarly, a discharge hose is connected to a discharge port 2b of a submergible pump 2 and extended to a place where waste matter is to be dumped. Through operation of a vacuum pump 1, a mixture of sand, water, air, etc. is drawn out from the liquid supply source 4 to a separation tank T2. When the level of liquid in the separation tank T2 reaches a predetermined level, the submergible pump 2 is set into operation by a liquid level detector E2. Resultantly, only gases are collected at an upper portion of the separation tank T2 while sand, sludge, etc. are carried to a place where they are to be dumped. On the other hand, when the level of liquid in the tank T2 is raised extraordinarily, operation of the vacuum pump 1 is stopped by a liquid level detector E1 for preventing intrusion of muddy water into the tank T2. |
