| 摘要 |
<p>PROBLEM TO BE SOLVED: To simply and efficiently wash a curved catch pipe and a branched catch pipe, etc., and simplify installation of the catch pipe. SOLUTION: In a washing device for an underground catch pit, a pump device 2 for supplying and sucking fed water in a water tank 1 is provided on a conducting tube part 3, a water tank arranging part 4 arranged on the water tank 1 is provided on one end part of the conducting tube part 3, a connecting part 8 connected to a drain 7 of catch pipe 6 parenthetically installed in the underground catch pit 5 is provided on the other part, and an opening/closing valve 9 for open/close-controlling the flow of water to the conducting tube part 3 is provided on the conducting tube part 3. By switching the opening and closing of the opening/closing valve 9, the conducting tube part 3 is provided so that a water supply passage for supplying the water in the water tank 1 to the catch pipe 6 by the pump device 2 and a water absorption passage for absorbing the water supplied to the catch pipe 6 in the water tank 1 by the pump device 2 are formed. Moreover, a controller (a) for operationally controlling the opening/closing valve 9 is provided so as to alternately repeat to supply the water in the water tank 1 to the catch pipe 6 through the water supply passage and to sack the water of the catch pipe 6 in the water tank 1 through the water suction passage.</p> |
