FIELD: pumps.
SUBSTANCE: group of inventions relates to centrifugal pumps. Impeller of the centrifugal pump contains the first disk element functionally located towards the inlet and being coaxial and facing the second disk element which is functionally located towards injection. Disk elements are rigidly interconnected by blades arranged through angular intervals. Second disk element is fixed in the centre on the transmission shaft by the fastener. In the peripheral zone of the second disk element, there are openings between pairs of adjacent blades in zones where the greatest axial force acts. Openings are formed with outlined slits. Radially peripheral side of each outward-shaped slits has arched profile with convexity facing axis of rotation.
EFFECT: invention provides considerable reduction of axial forces, but simultaneously provides maximum efficiency and pressure.
12 cl, 18 dwg
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