| 摘要 |
The invention relates to a device for generating an oscillating fluid flow and a device for generating an oscillating lift of a tool. More particularly, the invention relates to a rotary pump (1) comprising a spherical segment-shaped hollow space (2) in which a rotationally driven spherical segment (5) is arranged. Said spherical segment (5) has an axis of rotation (10) that runs at an angle from the central axis (9) of the spherical segment (5). The spherical segment (5) is arranged in the hollow space (2) in such a way that a spherical cone-shaped interstice (8) is created between a bottom plate (3) of the hollow space (2). A hinged plate (12) which touches the bottom (6) of the spherical segment at the widest point thereof and subdivides the interstice (8) into two working chambers (18, 19) is centrally inserted into the bottom plate (3) of the hollow space at a right angle. |
