PROPORTIONING PUMP Russian patent published in 2001 - IPC

FIELD: chemical, radiochemical, food, pharmaceutical industries and medicine. SUBSTANCE: pump is designed for continuous volumetric pressure metering of liquids. Proposed pump has housing with bore, and sleeve with radial channels installed in bore. Inlet and outlet channels are made in housing in zone of location of radial channels and opening in housing bore. Plunger is arranged in sleeve to form working chamber. Plunger is provided with flat in zone of radial channels. Pump has mechanism to transmit rotation and reciprocating motion to plunger. This mechanism is made in form of magnetic clutch consisting of driving and driven clutch members displaced relative to each other along axis and provided with partition-screen in between connected with housing. Disk is arranged in housing coaxially with driven clutch member shaft coupled with plunger. Disk has inclined end face surface. Pump is furnished with device rigidly secured on driven clutch member shaft for engagement with inclined end face surface of disk. Moreover, roller or additional disk mounted on ball support can be used as device for engagement with inclined end face surface of disk being mated with inclined end face surface by its end face. Shaft of driven clutch member can be either rigidly coupled with plunger or coupled with plunger by means of flexible member, such as bellows, enclosing the ends of plunger and shaft, with spherical member installed in between, or flexible compensator made in form of spring fitted in cup and carrier located over spring and coupled with plunger and shaft of driven clutch member. EFFECT: no leakage of any handled material. 6 cl, 4 dwg