| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid force feed device in which a downward movement of an up-and-down rod makes an air supply ball valve element move downward by preventing the air supply ball valve element from pivoting in a position in which an air supply valve port is opened. SOLUTION: In the liquid force feed device, opening and closing of an air supply valve element 21 for opening and closing an air supply valve port 24 of a working fluid introducing port 11 and an exhaust valve element 30 for opening and closing an exhaust valve port 32 of a working fluid discharge port 13 are switched in response to a height of a liquid level of liquid stored in a sealed vessel 2, the liquid is first made to flow in from a liquid inflow port 16 by opening the exhaust valve port 32 and closing the air supply valve port 24, and the liquid stored in the sealed vessel 2 is then forcibly fed from the liquid discharge port 17 by closing the exhaust valve port 32 and opening the air supply valve port 24. The ball-shaped air supply valve element 21 is disposed at the air supply valve port 24 in a portion nearer to the working fluid introducing port 11. The up-and-down rod 22 for opening the air supply ball valve element 21 is disposed penetrating through the air supply valve port 24. A conical wall member 23 for supporting the air supply ball valve element 21 in an opened state is disposed on an upper side of the air supply ball valve element 21. COPYRIGHT: (C)2009,JPO&INPIT
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