| 摘要 |
<p>A plunger pump arrangement comprises a plunger (2) guided in a cylinder (1). The cylinder is provided in the vicinity of its closed end with an inlet pipe (12) and a delivery pipe (13) for the pump medium, and is connected at this closed end with a delivery connection (11). The plunger (2) has at least one peripheral groove (5) which, during the compression stroke of the plunger, communicates with an annular channel (3) extending over the inner circumference of the cylinder.</p> |
