Driving unit for vertical pump

Claim 1

A driving unit for a vertical shaft-driven pump for pumping liquids from deep wells and bore-holes, the pump having a rotary pumping unit disposed within a riser pipe and pumping liquid upwardly therethrough into a laterally extending branch pipe joined to the riser pipe adjacent the upper end of the latter, the driving unit comprising a supporting assembly having a cross-shaped base mounted on the top of the riser pipe, a radially disposed supporting rib extending upwardly from each arm of the base, a top flange for supporting a prime mover with a vertical shaft mounted on the upper ends of the ribs, a central bearing box having bearings receiving the upper end of the pump driving shaft within the upper end of the riser pipe, the bearing box being supported on the supporting assembly between the base and top flange thereof, a coupling drivingly connecting the shaft of the prime mover with the upper end of the pump driving shaft, and a stuffing box on the assembly forming a seal between the upper end of the riser pipe and the pump driving shaft, the branch pipe being disposed generally in a vertical plane radial of the riser pipe midway between two successive arms of the base of the assembly.