OPEN STAGE IMPELLER OF ELECTRIC-CENTRIFUGAL PUMP Russian patent published in 2017 - IPC F04D29/22 F04D13/10 F04D29/41 

FIELD: oil and gas industry.

SUBSTANCE: open stage impeller of an electric-centrifugal pump contains a hub that can freely move along the pump shaft, a drive disk with blades, installed on one of its flat surfaces and forming flow channels, and an individual support foot on both surfaces of the disk in the form of an antifriction wear-resistant washer. Along the length of the flow channels, starting from the larger diameter of the disk, cutouts are made, the boundaries of which are in line with the boundaries of the lateral surfaces of the blades in the zone of attachment of the blade to the drive disk. Heightwise, the blade is made up of two parts, at least one of which is inclined relative to the axis of rotation.

EFFECT: increased reliability of the impeller when pumping liquids containing mechanical impurities.

4 cl, 5 dwg