CENTRIFUGAL PETROLEUM-WELL PUMP GUIDE APPARATUS Russian patent published in 2008 - IPC F04D29/44 F04D13/10 

FIELD: engines and pumps.

SUBSTANCE: pump guide apparatus incorporates plates arranged on the suction and delivery sides, furnished with helical channels made up of the main and transfer parts. The peculiarity of the said apparatus consists in that the transfer parts of the helical channel provided on the plate suction side is arranged so that the said part peripheral helical surface intersects the plate outer diameter surface to form, along with the blind and open walls, a triangular slot open on the peripheral side. The periphery of the plate arranged on the delivery side is furnished with sector slots, open on the periphery side, smoothly matching with the plate radial parts. The apparatus inner backlash depth is selected so as to make the width of recess on the plate suction side exceed that on the delivery side.

EFFECT: higher head and higher manufacturability.

2 cl, 6 dwg