| 摘要 |
A double-acting pump includes two cavities, each of which is divided into an operating chamber (6) and a working chamber (5) by means of a respective movable partition wall (4). Each of the operating and working chambers is provided with a valve-controlled inlet and outlet (7, 9; 8, 9) for a gaseous driving medium and a pump-transported liquid working medium respectively. A device (16) for transmitting movement of one partition wall to the other, and vice versa, extends between the movable partition walls (4). This movement transmission device (16) is spring-like in the movement transmission direction.
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