| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid force feed device capable of quickly opening a check valve element, when liquid is made to flow in from a liquid inflow port by closing an air supply valve port by opening an exhaust valve port. SOLUTION: This device is constituted so that a sealed vessel 4 is provided with a hydraulic fluid introducing port 9, a hydraulic fluid discharge port 5, the liquid inflow port 6 and a liquid discharge port 7; an inflow side check valve port 33 of the liquid inflow port 6 is arranged in the sealed vessel 4; an inflow side check valve element 34 for opening the inflow side check valve port 33 toward the inside of the sealed vessel, is arranged in the sealed vessel 4; a communicating passage 35 is arranged for connecting the hydraulic fluid discharge port 5 to the liquid inflow port 6; and a pressure reactive member 37 is arranged in a pressure chamber 37 on the liquid inflow port 6 side end of the communicating passage 35 for opening the inflow side check valve element 34 by a hydraulic fluid supplied via the communicating passage 35 when closing an air supply valve port 20 of the hydraulic fluid introducing port 9 by opening an exhaust valve port 21 of the hydraulic fluid discharge port 5. COPYRIGHT: (C)2006,JPO&NCIPI
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