VANE-TYPE PUMP Russian patent published in 2015 - IPC F04C2/344 

FIELD: engines and pumps.

SUBSTANCE: invention relates to the field of rotor vane-type pumps and may be used for pumping of highly viscous fluid with high content of mechanical impurities and gas. The vane-type pump comprises a body 1, in the inner cavity of which there is a stator and a rotor 3 with vanes 5, placed in its radial slots 4, end discs, where injection holes 13 are provided, as well as cuts for liquid input between the stator and discs. The stator comprises an inner cylindrical surface, the guide of which is formed by two pairs of symmetrically arranged arcs of different radii and coupling curves from arcs of one radius to arcs of the other. Arcs of identical radii are arranged opposite to each other. Between the surfaces with permanent radius of curvature there are four windows 17 and 18 cut - two for inlet and two for injection of fluid. The body 1 has windows 16 for liquid inlet. Windows 18 in the stator are made with size comparable to size of the injection chamber.

EFFECT: invention is aimed at development of submersible vane-type pump design providing for required resource of pump operation without significant reduction of efficiency.

3 dwg