SUBMERGED MULTI-PHASE PUMP Russian patent published in 2011 - IPC F04D13/10 F04D3/02 F04D31/00 

FIELD: engines and pumps.

SUBSTANCE: multi-phase pump includes axial stages in-series located on the shaft. Each of the stages consists of guide vanes and impeller. Impeller has one or several spiral blades 2 arranged on sleeve 1 and restricted with inlet edges 3 and outlet edges. There are through holes 4 in blade 2 of impeller along the edge of inlet edge 3, which are designed for crushing of gas bubbles and additional flow turbulisation.

EFFECT: invention provides stable operation of submerged plant at high content of undissolved gas and in the range extended to the area of light feed area.

7 cl, 2 dwg