| 摘要 |
<p>Drive device for a fluid driven pump comprises a motor element (24) which reciprocates a piston (18). At least one mechanical energy storage element (31) is charged in the course of a piston movement in a first direction of movement (32) and releases its energy during the opposite piston movement in order to assist the piston movement. As a result, the motor element and also possibly force transmission elements (22, 25, 26, 27) are sensibly relieved of load, in order to reduce the wear and tear and to widen the possible field of use. Fluid driven pump containing the said drive device and method of operating the said drive device.</p> |
