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    • 6. 发明专利
    • TURNOUT
    • JPH02112531A
    • 1990-04-25
    • JP26270088
    • 1988-10-20
    • NIKKEN SEKKEI KKNISHIHARA EISEI KOGYOSHO KKTOYO VALVE CO LTD
    • KAWASE TAKAHARUHAGIWARA KEIICHI
    • E03B3/02E03C1/00E03D1/00
    • PURPOSE:To reduce costs by providing a branching port having such a constitution that the change-over to water storage or drainage based on discharging time and pondage for an amount of catchment and dust removal can be made to a turnout to change-over rain water and the like to a water storage side or drainage side. CONSTITUTION:A sensor detects a rainfall when there is a rainfall on the roof of a building, and an electric signal is inputted to a motor operating machine 8 of a turnout after establishing a certain time for removing dust, if the water storage is necessary. After that, the rain water flows down through an inflow pipe 13 to reach a branch port 6 from an inflow port 2 and flows down to a branch outflow tank of the drainage side, and is discharged through a drainage side branch flow outlet port 3b. After that, an opening hole of the branch port 6 is opposed to a water storage side branch outflow tank to swivel the operating machine 8. In addition, the catchment to flow into the branch port 6 is flowed out to the water storage tank through the water storage side branch flow outlet port 3a to make a water storage.