- - ROTARY-OSCILLATING SUBASSEMBLY AND ROTARY-OSCILLATING VOLUMETRIC PUMPING DEVICE FOR VOLUMETRICALLY PUMPING A FLUID

摘要

A rotary vibrating subassembly (1) for volumetric pumping of fluids, said subassembly comprising: a hollow hollow body having a wall defining a cavity (10) and having two ducts (11, 12) Wherein the piston (3) cooperating with the cavity (10) includes a channel (22) defining an actuating chamber (31) and opened longitudinally into the actuating chamber (31), the piston 3 are angled and movable so that the operating chambers 31 and 131 are in fluid-flow communication with one duct of the ducts 11, 12; 111 and 112, The piston 3 being movable to reciprocate longitudinally to cause the volume of the working chamber 31 to vary and continuously to suck and discharge the fluid, the piston 3 having at least one sealing ring 32, (33) and the sealing ring (32) to the sealing half-ring 33, 34 formed of at least one sealing strip (34) longitudinally connecting the gasket (32, 33).