| 摘要 |
The pump has a housing (1), and a pump head (8) defining a working space (9) with a common or separate inlet-and outlet opening (10). Volumes of the working space are changed by a plunger (7). The plunger is axially moved by a threaded spindle (5) or a spindle nut (6), which is provided in threaded engagement with the threaded spindle. The threaded spindle and/or the spindle nut is rotatably driven and/or rotatably locked. The threaded spindle, the spindle nut or a motor (2) are provided with a manual or automatic clutch (4) i.e. friction clutch. |
