| 摘要 |
<p>The pump comprises a pumping member (9) in circular motion within a pumping chamber, causing the rotation of the fluid. The pumping member (9) is attached on a support (6) and performs a circular motion while having on an average a fixed spatial orientation with respect to the pumping chamber. The support (6) forms a mechanical connection between the pumping member (9) and a rotary driving member (1) arranged outside the pumping chamber, and performs a nutation. The support nutation radius has, in a direction parallel to the radius of the circular motion, a value decreased at the location where the support penetrates the wall of the pumping chamber with respect to the value of the radius of the circular motion of the pumping member (9). A sealing resilient member (15) is sealingly connected, on one hand, with the wall of the pumping chamber at the vicinity of the penetration of the support in the pumping chamber and, on the other hand, with the rotary support and/or pumping member having a fixed spatial orientation inside the pumping chamber.</p> |
