HYDRAULIC ROTARY WEDGE PUMP Russian patent published in 1997 - IPC

FIELD: manufacture of pumps. SUBSTANCE: pump has housing with working medium inlet and outlet ports, separating plates located in slots of housing in parallel with its axis for axial motion and rotor secured on shaft and engageable with plates by its end profiled surface; these plates form working chambers. Master cam is mounted on housing. Rotor made in form of truncated cone is mounted on shaft in master cam. Truncated cones ports where blades are mounted in immediate vicinity of each other. Each blade is made in form of wedge whose inclined surface is directed towards outlet branch pipe made in form of master cam with slotted nozzle and lug valve fitted in it. At lower base of rotor, blades with ports are located at distance from each other and rotor has bore made in parallel relative to plane of ports. Shaft is mounted in housing at angle to longitudinal axis of rotor. Disk with five eccentrics made in form of start is secured on shaft. Disk is engageable with hinges on which blades are mounted. Disk and rotor are kinematically linked by means of gear drive ratio of 2:1; profile of eccentrics corresponds to that of master cam with inclined side of blades. Each blade is provided with lugs fitted on pointed end. Before beginning of inclination, rotor has slots on outer sides of ports where outlet pins are located. Blades are secured on these pins. Each pin is provided with bearing and is engageable with return skid mounted inside housing. EFFECT: enhanced reliability. 9 dwg