DUPLICATED ELECTRICALLY-DRIVEN PUMP UNIT Russian patent published in 2008 - IPC F04D13/14 

FIELD: engines and pumps.

SUBSTANCE: duplicated electrically-driven pump unit has a housing with inlet and outlet unions, two electrically-driven centrifugal pumps arranged in the housing bores, the pumps motors axes being parallel, and a two-way check valve. The latter is arranged between the pumps diffusers in the housing cylindrical space. The aforesaid centrifugal pumps are arranged so that the end faces of their shafts are opposed. The motors flanges are jointed to the opposite end faces of the housing flange, while the housing cylindrical space axis lies in parallel to the pumps motors shafts axes.

EFFECT: smaller radial sizes and higher manufacturability.

6 dwg