Improvements in or relating to two-stage rotary sliding vane oil sealed vacuum pumps

摘要

1,041,898. Rotary vacuum pumps. LABORATORNI PRISTROJE ,NARODNI PODNIK. Nov. 25, 1964 [Nov. 28, 1963], No. 47904/64. Heading F1F. A two-stage, oil-sealed, rotary sliding vane vacuum pump, includes a separate transverse partition 15 separating the stages from each other, which is prevented from axial and rotational movement with respect to the stator 14 by pins 20 and sealed with respect to the stator by sealing rings 19. The shaft 18 on which the rotors 16, 17 are mounted, one fixed and the other axially movable, passes through a hole in the partition and is sealed with respect thereto by a seal 11.