| 摘要 |
<p>A rotary fluid pump has a pump housing or shell (21), an inlet (35) and outlet (36) and a pump chamber in which an undilating rotor (28) forms axially off set pockets with the chamber end surfaces (50.1, 50.2) for conveying pumped medium from inlet (35) to outlet (36) and moves a gate means (31) springingly bearing with rounded nose portions (73) on the rotor vane (30) to separate a suction chamber (25) and discharge chamber (27) connected to the inlet and outlet respectively. Improved separation of the suction and discharge chamber results by providing that the vane portion (30) has a thickness (T) which varies in a circumferential direction in differently inclined vane parts and varies in a radial direction in the inclined vane parts to provide line contact with the rounded nose portion (73) throughout the radial extent of the vane portion (30) during a full revolution of the rotor (28).</p> |
