| 摘要 |
PURPOSE:To permit the operation free from leak of liquid by installing a working bellows and a press transfer bellows in series through an intermediate cut-off wall inside a liquid storage tank and allowing the bellows to alternately extend and contract to absorb and discharge the liquid by the working fluid. CONSTITUTION:When the pressure of the working oil in a working fluid chamber 15 is increased, a working bellows 6 is extended through an intermediate cut-off wall 7, and a bellows 9 for press transfer contracts. The head 130 of a valve mechanism 13 is attached onto a valve seat part 70 by the lowering of the cut-off wall 7 due to the subsequent increase of the fluid pressure, and the inside of a tank 1 and a press-transfer chamber 11 are separated. At the same time, the liquid A enclosed in the press transfer chamber 11 is sent under pressure through a liquid feeding passage 10 and a check valve 12 by the reduction of the capacity of the press transfer chamber 11. When the pressurization for the fluid chamber 15 is released, the both bellows 6 and 9 are restored by the own restoration force, and the liquid A in the tank 1 is inhaled into the press transfer chamber 11 from an introducing hole 8 by the opening of the valve mechanism 13, and is set in waiting for the next process.
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