WORKING MEDIUM PUMPING SYSTEM Russian patent published in 2003 - IPC

FIELD: metered high- pressure supply of two components to actuating element in all industries. SUBSTANCE: system has two pressure boosters each incorporating piston and variable-volume cavities intercommunicating through working medium distributors. Delivery and drain lines are equipped with pressure accumulators and control equipment. Actuator ensures operation of pressure booster. Distributors are made in the form of three-position slide valves. Each of them has three slide-valve chests. Two extreme chests of each slide valve communicate on one end through ducts with extreme water cavities of pressure booster and on other end extreme chests of one slide valve communicate with source of one of working-medium components. Extreme chests of other slide valve communicate with source of other working-medium component. Intermediate slide-valve chests communicate through delivery line with actuating element. Connected to delivery lines are filler-and-drain necks. Pressure booster rods and slide-valve rods are joined together and connected to actuator through link. In this way second component of liquid or fuel can be supplied to actuating element in desired proportion. EFFECT: enlarged hardware range. 1 cl, 2 dwg