FIELD: engines and pumps.
SUBSTANCE: electrically driven borehole pump comprises motor section 20, pump section 24, protection section 22 arranged between said motor and pump sections, and rotary shaft. Said shaft extends through all aforesaid sections 20, 22, 24. Each of the latter comprises multiple operating components and bushes fitted on the shaft to make, in fact, solid tube around said shaft. Fittings are provided at shaft top and bottom ends to retain said components and bushes in compressed state.
EFFECT: sealed and stiff shaft as well as pump proper.
9 cl, 4 dwg
