Rotor bearing system for molten metal pumps
First Claim
Patent Images
1. A molten metal pump comprising;
- a. a superstructure;
b. a pump base formed of refractory material, the base having a pump chamber including a first bearing surface;
c. a support post connecting the restructure to the pump base;
d. a rotor positioned in said pump chamber, said rotor having a top, a bottom and a side and including a plurality of recesses; and
e. a bearing section rigidly positioned in at least two of the recesses in said rotor, each of said bearing sections having an outer surface, said collective outer surfaces forming a second bearing surface on the side of the rotor, the second bearing surface being axially aligned with said first bearing surface, wherein the second bearing surface is positioned inside of the first bearing surface to reduce cross-axial movement of the rotor, and wherein the bearing sections do not create a fluid-tight seal with the first bearing surface.
2 Assignments
0 Petitions
Accused Products
Abstract
A system and device for pumping molten metal that reduces bearing member fractures comprises a pump having a pump chamber including a first bearing surface, a rotor having a second bearing surface that aligns with the first bearing surface. The second bearing surface is formed by a plurality of spaced bearing pins attached to the rotor. Each bearing pin has an outer surface preferably substantially flush with the outer perimeter of the rotor. The pins are comprised of a heat resistent material that is harder than the material comprising the rotor.
-
Citations
19 Claims
-
1. A molten metal pump comprising;
-
a. a superstructure; b. a pump base formed of refractory material, the base having a pump chamber including a first bearing surface; c. a support post connecting the restructure to the pump base; d. a rotor positioned in said pump chamber, said rotor having a top, a bottom and a side and including a plurality of recesses; and e. a bearing section rigidly positioned in at least two of the recesses in said rotor, each of said bearing sections having an outer surface, said collective outer surfaces forming a second bearing surface on the side of the rotor, the second bearing surface being axially aligned with said first bearing surface, wherein the second bearing surface is positioned inside of the first bearing surface to reduce cross-axial movement of the rotor, and wherein the bearing sections do not create a fluid-tight seal with the first bearing surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 14, 15)
-
-
10. A rotor formed of refractory material, the rotor for use in a molten metal pump, said pump including a pump base formed of refractory material, the base having a pump chamber therein and a first bearing surface juxtaposed said pump chamber, said rotor comprising:
-
a. a section for moving molten metal; b. a section for attachment to a drive shaft; c. a bottom, a top and a side; d. a plurality of recesses formed therein; and e. a bearing section rigidly positioned in at least two of said recesses, each of said sections having an outer surface, said outer surface forming a second bearing surface on the side of the rotor. - View Dependent Claims (13, 16, 17, 18, 19)
-
Specification