IMPELLER UNIT FOR CENTRIFUGAL PUMPS Russian patent published in 2020 - IPC F04D29/22 F04D29/41 

FIELD: pumps building.

SUBSTANCE: impeller assembly for centrifugal pumps comprises smaller and larger disks, arranged coaxially relative to rotation axis and facing each other to form an intermediate space. Discs are connected by blades located radially in said intermediate space, and in the center are equipped with a fastening device for fixation on the transmission shaft, which is rotated around the rotation axis. Impeller assembly comprises shaped blades that project radially from peripheral area of disc of smaller diameter. Profiled blades are located on said blades and have trapezoidal shape, and larger diameter disc has circular periphery.

EFFECT: inventions are aimed at reduction of axial forces and simultaneous provision of maximum efficiency, as well as protection of engine bearings.

13 cl, 10 dwg