METHOD OF TRANSFER OF FLUID AND PUMPING UNIT Russian patent published in 1997 - IPC

FIELD: transfer of fluids and filling of containers. SUBSTANCE: suction and delivery strokes are performed in each pump chamber of pumping unit by connecting the pump chamber bears in turn with inlet and outlet passages due to stage-by-stage maneuvering of distributing unit. Part of suction stroke in one pump chamber is effected simultaneously with part of suction stroke in other pump chamber due to simultaneous connection of pump chambers with inlet hole. Inlet passage of pumping unit occupies larger portion of peripheral surface of valve for simultaneous connection of pump chambers with inlet passage. Each pump chamber is provided with flexible movable wall supported by front ends of piston. Pump chambers are located in common plane. Axis of rotation of valve is located at right angle relative to central axis of pistons. EFFECT: enhanced reliability. 10 cl, 7 dwg