PROCEDURE FOR FABRICATION OF IMPELLER OF CENTRIFUGAL PUMP Russian patent published in 2010 - IPC F04D29/28 B21K1/36 B23P15/04 

FIELD: machine building.

SUBSTANCE: impeller is made of two parts. The first part of the impeller contains a covering disk. The first and the second parts of the impeller form a detachable connection at their joining and are mechanically pressed to each other. Their conjugated surfaces are packed between back and working surfaces of each blade. A main disk with a hub is made in form of two circular elements. A remote from an input orifice circular element functions as the element of the second part of the impeller. At least part of each blade is made solid with the covering disk and the nearest to the input orifice element of the main disk with the hib.

EFFECT: eliminated distortion of shape of between-blade channels of impeller and lack of necessity to select material of good weldability for impeller; implementation of procedure reduces working zone for executing elements.

3 cl, 6 dwg