| 摘要 |
PROBLEM TO BE SOLVED: To provide a water level management unit capable of enhancing a water-stopping property by closing a water-feed port 22 by a valve element 40 without a clearance. SOLUTION: The water level management unit 10 is provided with a water-feed pipe 14 and a float 26. The water-feed pipe 14 is fixed in a vertical direction by a shaft fixing unit 24, and the float 26 is interlocked with a water level to be vertically moved along the water-feed pipe 14. Further, a valve element 40 is connected to the float 26 through a link mechanism 38, and opens/closes a water-feed port 22 of the water-feed pipe 14 interlocking with vertical movement of the float 26. As a result, the float 26 is smoothly vertically moved according to variation of the water level, and the valve element 40 opens/closes the water-feed port 22 at suitable timing. Further, the valve element 40 closes the water-feed port 22 without the clearance, thereby, it is excellent in the water-stopping property. COPYRIGHT: (C)2009,JPO&INPIT
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