CENTRIFUGAL PUMP Russian patent published in 2008 - IPC F04D7/04 F04D29/47 F04D29/70 

FIELD: engines and pumps.

SUBSTANCE: invention relates to centrifugal pumps designed to pump over fluids with abrasive inclusions, for example, oil, and incorporating hydrostatic bearings lubed by pumped fluid. The centrifugal pump incorporates housing with an inlet branch pipe, a shaft with impellers running in bearing assemblies representing the hydrostatic bearings, their working chambers communicating with the pump inlet branch pipe via the fluid purification device arranged at the inlet branch pipe top and made up of a casing with a cover. The said device communicates with the branch pipe via a number of orifices. The pump inner chamber is separated by a partition into an intake chamber and an accumulating chamber. The aforesaid intake chamber lower section communicates with the pump chamber via the intake branch pipe orifices and with the accumulating chamber via the gap provided between the said partition and the cover. The aforesaid accumulating chamber top part is furnished with orifices to communicate with the hydrostatic bearings and with baffles arranged nearby the aforesaid orifices. The aforesaid baffles are jointed to the enclosure covering the said orifices, at its center and along its edges.

EFFECT: higher reliability and longer life of pump hydrostatic bearings ensured by ruling pout ingress of foreign particles into hydrostatic bearings.

2 cl, 5 dwg