| 摘要 |
<p>The invention relates to a hydraulic pump operating with relatively reduced noise at a pressure of 250 bar and a rotary speed of up to 4000 rpm. According to the invention, the pump has some pinions (1 and 2), namely a driving and a driven one, respectively, mounted by means of some bearings in some compensators (3a and 3b) placed in a body (6) between a flange (5) and a cover (7), the sealing being ensured by some packings (4), and the sealing of axial clearance between compensators (3a and 3b) and the flange (5) and between compensators (3a and 3b) and the cover (7), respectively, being carried out by some compensating packings (8), the body (6) together with the pinions (1 and 2) and the compensators (3a and 3b) confining two pressure zones, namely a high and a low pressure zone, respectively, the fluid circulation taking place through the exterior of the pinions (1 and 2).</p> |
