| 摘要 |
PROBLEM TO BE SOLVED: To provide a valve structural body and a liquid supply control mechanism capable of reducing cost of facility, facilitating maintenance work, setting a start water level and a stop water level of supply water freely, and taking large difference in water level. SOLUTION: This valve structural body is constituted to slide freely and vertically by connecting a valve element 8 and a balance guide 19 with a valve stem 21 integrally and connecting a lower end with a lever mechanism 9A in a space composed of a valve casing 16 and a cover 17, and a section between the valve element 8 and a valve seat 25 is opened and closed to supply liquid or stop supply of liquid. Diameter of the valve seat is larger than diameter of the balance guide, and an energizing means 22 is attached to an upper part of the balance guide. An energizing force adjusting means for energizing force for closing the valve element is provided to adjust the energizing force. A string-like body 9C is attached to the lever mechanism 9A, a second stopper 14 is attached to a lower end of the string-like body, and a first stopper 15 is attached to a part close to an upper end. A float 9B is constituted to move freely along the string-like body. A regulation means 26 is provided on a lever to prevent the valve element from being opened when a water level lowers again after the valve element is closed so that a start water level and a stop water level of supply water can be selected and set freely. The string-like body is always put in a vertical condition to prevent it from getting entangled in a water tank. COPYRIGHT: (C)2007,JPO&INPIT
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