GUIDED-VANE ROTARY PUMP Russian patent published in 1998 - IPC

FIELD: pumps used for handling liquid media. SUBSTANCE: pump includes housing provided with suction and delivery branch pipes with rotor mounted eccentrically inside it. Rotor is provided with radial passages lengthwise where vane members kinematically linked with rotor are movably located. Vane members separate suction and delivery cavities of pump. Rotor is provided with axial passage where longitudinal partition is mounted immovably. Longitudinal partition performing function of seal relative to rotor divides inner passage in rotor into two isolated cavities. Radial passages in rotor are straight-way passages. Cup-shaped pistons are secured to vane members on side of axial passage of rotor over entire length. This pump may be sued for handling two media simultaneously: one medium through pump housing and other medium through axial passage of rotor which is isolated from inner cavity of pump. EFFECT: enhanced reliability. 1 dwg