| 摘要 |
PROBLEM TO BE SOLVED: To reduce cost and labor for arranging a liquid force feed device. SOLUTION: In this liquid force feed device 1, a sealed vessel 4 is provided with a hydraulic fluid introducing port 9, a hydraulic fluid discharge port 5, a liquid inflow port 6 and a liquid discharge port 7; opening-closing of an air supply valve element 22 for opening and closing an air supply valve port 20 of the hydraulic fluid introducing port 9 and an exhaust valve element 19 for opening and closing an exhaust valve port 21 of the hydraulic fluid discharge port 5, is switched in response to the height of a liquid level of liquid gathered in the sealed vessel 4; the liquid is made to flow in from the liquid inflow port 6 by closing the air supply valve port 20 by opening the exhaust valve port 21 in the beginning; and the liquid gathered in the sealed vessel 4 is forcibly fed from the liquid discharge port 7 by opening the air supply valve port 20 by closing the exhaust valve port 21 in the next place. The liquid force feed device is constituted so that an inflow side check valve port 33 of the liquid inflow port 6 is arranged in the sealed vessel 4, and an inflow side check valve element 34 is arranged in the sealed vessel 4 for opening the inflow side check valve port 33 toward the inside of the sealed vessel 4, and a communicating passage 35 is arranged in the sealed vessel 4 for connecting the hydraulic fluid discharge port 5 to the liquid inflow port 6. COPYRIGHT: (C)2006,JPO&NCIPI
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