| 摘要 |
<p>A dual-shaft rotor pump having a casing, two rotary shafts provided within the casing, two rotors provided respectively on the two rotary shafts and capable of rotating in mutually opposing directions, and shaft bearings and shaft seals provided on each of the two rotary shafts, with the two rotors working together to compress and discharge a fluid within the casing, wherein a connecting passage is provided connecting the interior of the casing and each of the aforementioned shaft bearings, and the open end on the casing-interior side of the connecting passage is provided at a location where it is opened/closed by the rotation of the rotors such that the connecting passage is open during at least part of the fluid compression period.</p> |
