VERTICAL ELECTRICALLY DRIVEN PUMP UNIT (VERSIONS) Russian patent published in 2014 - IPC F04D13/06 F04D7/04 

FIELD: engines and pumps.

SUBSTANCE: proposed unit comprises motor, rotary pump, adapter with bearing flanges and housing accommodating the clutch. Rotary cradle-mounted semi-submersible pump has housings of running and flow sections. Running part case is equipped with bearing housings and elongation insert case. Said housings cover larger section of the shaft to make therewith the pump running post. Flow section case comprises outlet case, rear wall, axial suction pipe and tangential pressure pipe and flow section accommodating the impeller. Scroll outlet covers the impeller. Pressure pipe is composed of diffuser to decrease flow rate at its outlet. Pump shaft runs in two bearings to make rotor part of the pump running post and is equipped with top and bottom brackets extending outside said bearings. Bottom support length is larger than that of top support. Impeller is equipped with vanes rigidly secured to the disc and curved in at least projection to conditional plane perpendicular to shaft axis.

EFFECT: higher efficiency and reliability, longer life.

24 cl, 7 dwg