| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic water supply system capable of operating over a wide scope of an effective head from the lowest effective head of about 20 cmAq to the effective head of about 350 cmAq. SOLUTION: This automatic water supply system is provided with a water conducting pipe 102 whose opening on one side is communicated with a channel 101 being a water supply source, a valve body 103 provided in an opening on the other side of the water conducting pipe 102, a valve element 108 moving vertically by using an optional fulcrum 112a as a pivotal shaft and coming into pressure-contact with or leaving from a valve seat part 104 of the valve body 103, and a tank 111 having an air vent 115 in an end part of an arm 110 provided opposingly to the fulcrum 112a around the valve element 108 and/or at the valve element 108. The automatic water supply system is provided with a flow-in pipe 117 for communicating the inside of the valve body 103 with the inside of the tank 111 and a drain pipe 119 for communicating the inside of the tank 111 with a water level sensor 120. The center of gravity of the tank 111 filled with water to its capacity is on a valve element 108 side. COPYRIGHT: (C)2008,JPO&INPIT
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