Flotation machine impeller to a method for modeling flotation machine impeller is double umbrella impeller from the upper bunk boards and constitute two blades, leaf number was 6. Specific modeling process as follows: 1, according to hydraulic diagram, the command generated by the rotating impeller, bunk boards; 2, draw the bottom face and the back of the single blade type line, then pull the blade extending the initial contour; 3, will do a good job The single blade to do to get the underlying display processing blade; 4, in a position to make a spread sheet above a horizontal plane, the reference plane to draw down the upper single blade linear stretching first planking; 5, the blade made drawn on the upper part of the upper blade type line, and then type blades made online portion partially cut, to get the final shape of a single upper leaves; 6, would do well to do a single blade array processing to get the upper leaves. The resulting three-dimensional stand off flotation machine is shown below