FIELD: machine building.
SUBSTANCE: invention relates to the field of centrifugal hydraulic machines and can be used in the extractive industry, as well as in agriculture and for household needs. Essence of invention consists in that impeller of centrifugal multistage pump comprises main and cover disks, between which there are blades, wherein flow part of impeller has bend and reverse slope and is characterized by that it additionally contains auxiliary blades, and value of angle between tangents to output edges of main and covering discs and transverse plane is from 40 to 80°.
EFFECT: technical result, to which the invention is aimed, is to improve the mass and dimensions characteristics of the impeller of the centrifugal multi-stage pump with the attendant retention of its efficiency.
10 cl, 3 dwg
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