Riserless transfer pump and mixer/pre-melter for molten metal applications

摘要

A pump for processing molten metal having an enlarged tubular body which houses a centrifugal pump at its bottom end. The bottom end has a concave curved shape whose shape is a function of the particular type of vortex to be created for the application at hand. This curved portion of the body receives the ejected molten metal from the impeller and forms an uplifting axial vortex within the tubular section of the body. The pump is designed to cooperate synergistically with said body such that the uplifting axial vortex to climb up the inner wall of the body up to and out of an outlet formed in the upper end of the body. A radial vane impeller is formed in the back plate of the impeller. When the impeller is rotated, solid particles introduced into the body are accelerated radially by the back plate impeller into the vortex.

主权项

1. A molten metal pump comprising: an elongated body having an internal cavity defined by an inner wall which terminates in a bottom end; and a centrifugal impeller seated in an opening formed in the center of said bottom end, wherein molten metal ejected from the impeller is received by the inner wall adjacent the bottom end; and a helical guidance vane formed by grooves in said inner wall starting proximate to said impeller; whereby rotation of the impeller results in the ejected flow of molten metal to create an axially lifting vortex which climbs the body's inner wall to an outlet opening passing through an upper portion of said body.