MODULAR CENTRIFUGAL PUMP Russian patent published in 2008 - IPC F04D13/10 F04D29/62 

FIELD: engines and pumps.

SUBSTANCE: pump incorporates pump modules with working elements, shafts, splined couplings and the pumping module threaded joint parts. The aforesaid parts, given the shafts coupled, are arranged with a gap relative to each other and are furnished with lengthwise ledges. A threaded coupling is screwed on one of the threaded joint part to be screwed off a bit in assembly and to be screwed on the other threaded joint part in coupling the pump module shafts.

EFFECT: pump module unloaded shafts contact in pump assembly.

4 cl, 2 dwg