POSITIVE-DISPLACEMENT PUMP Russian patent published in 1995 - IPC

FIELD: pump engineering. SUBSTANCE: two members are secured inside the housing. One end of the member has thrust bearings wherein a rotatable rod is set. The rod has face slot for passing the plate at its middle part. The member positioned at the bottom part of the chamber has bottom support for freely mounting of one of the plate ends. The other end is freely mounted in the support defined at the top part of the housing. The second member is rigidly secured to the side wall of the chamber. Both of the supports are V-shaped. The rod is mounted at the same distance from the supports. The main working chambers are arranged at the same distances from the supports between the rod and top support of the housing. The additional chamber are interposed between the rod and bottom support. The passageway for connection of one additional chamber with the opposite main chamber is defined by the member positioned at the bottom part of the housing and inner wall of the housing. Passageways for connection of the other additional chamber with the second opposite main chamber are made between the second member and inner wall of the housing at its top part and the cover of the housing. EFFECT: enhanced efficiency. 3 dwg