| 摘要 |
A screw spindle pump arrangement includes a low-pressure connection, a high-pressure connection, a drive spindle, and at least one idling spindle. A feed section of the idling spindles is divided into two feeding segments that are driven either in series or in parallel to form a screw spindle pump arrangement with two operating modes. Two tap connections are connected by a connecting line which is provided in a center area of the feed section. The connecting line is blockable, the low-pressure side tap connection is connectable to the high-pressure connection, and the high-pressure side tap connection can be connected to the low-pressure connection. A series circuit is created by the open connecting line, corresponding to a screw spindle pump. With the connecting line blocked, and the simultaneous pressure medium flow paths indicated above, the screw spindle pump arrangement is operable as a parallel circuit. |
