MULTI-PHASE SCREW PUMP Russian patent published in 2009 - IPC F04C2/16 F04C29/02 

FIELD: engines and pumps.

SUBSTANCE: invention relates to screw pumps intended for pumping over gas-fluid media, e.g. oil well products. The proposed multi-phase screw pump comprises housing with intake and discharge branch pipes. The drive and driven impellers are running in bearings inside the pump working chambers. Sync gears are fitted on the rotor shafts inside the side cover chamber. The sidewall is jointed to the housing end face to form an oil bath at the bottom. The oil pan covers the lower parts of the gears below the lubricant level. The said pan bottom has holes receiving one ends of the pipes, their other ends being arranged in the said oil bath below the lubricant level.

EFFECT: higher reliability ensured by longer life of gears and bearings and by reducing power consumption for mixing lubricants.

3 dwg