Molten metal transfer system and rotor

Patent metadata

Field	Value
Publication number	US-2016031007-A1
Application number	US-201514880998-A
Country	US
Kind code	A1
Filing date	Oct 12, 2015
Priority date	Jun 21, 2007
Publication date	Feb 4, 2016
Grant date	—

Abstract

The invention relates to systems for transferring molten metal from one structure to another. Aspects of the invention include a transfer chamber constructed inside of or next to a vessel used to retain molten metal. The transfer chamber is in fluid communication with the vessel so molten metal from the vessel can enter the transfer chamber. A powered device, which may be inside of the transfer chamber, moves molten metal upward and out of the transfer chamber and preferably into a structure outside of the vessel, such as another vessel or a launder.

First claim

What is claimed is:

1 . A method of forming a transfer well in a vessel for containing molten metal, the method comprising the steps of:
(a) creating a form adjacent an interior wall of the vessel, the form defining a transfer well having an outer wall, a top surface, a bottom surface, an opening in the top surface, and an internal cavity, the internal cavity for holding molten metal and having an upper portion and a lower portion, a restricted area in the lower portion of the internal cavity, an uptake section above the restricted area and in communication with the opening in the top surface, and; (b) placing refractory material in the form to create the transfer well, wherein the interior wall of the vessel forms part of the outer wall of the transfer well.

2 . The method of claim 1 wherein there is an opening in the outer wall beneath the restricted area.

3 . A method of forming a first structure for the transfer of molten metal from the first structure to a second structure, the method comprising the steps of: forming a transfer chamber in the first structure, the transfer chamber having an opening, an uptake section above the opening, and an outlet in communication with the uptake section and above the opening and leading out of the first structure; wherein the transfer chamber includes a restricted section at or above the opening, but below the outlet, the restricted section configured to receive a molten metal pump rotor.

4 . A vessel for use in a system for transferring molten metal, the vessel including a cavity, a transfer section having: a stationary transfer chamber with an opening in communication with the cavity, the stationary transfer chamber having a stationary uptake section above the opening, and an outlet above the opening, the outlet in communication with the uptake section.

5 . The vessel of claim 4 that also includes an inner bottom surface that slopes downward towards the opening.

6 . The vessel of claim 4 that further includes a tap-out opening positioned lower than the opening.

7 . The vessel of claim 4 wherein the outlet is at least two feet above the opening.

8 . The vessel of claim 5 wherein the outlet is at least two feet above the inner bottom surface.

9 . The vessel of claim 4 that is comprised of refractory material.

10 . The vessel of claim 4 wherein the opening has a cross-sectional area and the stationary transfer chamber has a second cross-sectional area, the second cross-sectional area being larger than the cross-sectional area.

11 . The vessel of claim 10 wherein the stationary transfer chamber is cylindrical.

12 . The vessel of claim 4 wherein the stationary transfer chamber has a first section with a first cross-sectional area and a second section having a second cross-sectional area, the second cross-sectional area adjacent the opening, and the second cross-sectional area being larger than the first cross-sectional area.

13 . The vessel of claim 4 wherein the opening has a cross-sectional area and the stationary transfer chamber has a second cross-sectional area, the second cross-sectional area being smaller than the cross-sectional area.

14 . The vessel of claim 12 wherein the stationary transfer chamber further includes a third section having a third cross-sectional area, the third section being between the first section and the second section, and the third cross-sectional area being smaller than the first cross-sectional area, but larger than the second cross-sectional area.

15 . The vessel of claim 4 that has a first side wall and a second side wall opposite the first side wall, and that comprises one or more brackets for supporting the pump above the vessel, and the one or more brackets comprises two metal beams that extend from the first side wall to the second side wall, and each bracket is connected to the first side wall and the second side wall.

16 . The vessel of claim 15 wherein each bracket is flat.

17 . The vessel of claim 15 wherein each bracket is L-shaped.

18 . The vessel of claim 4 wherein the outlet is two feet or more above the opening.

19 . The vessel of claim 4 that further includes a wall dividing the vessel into a first section, and a second section that includes the stationary transfer section.

20 . The vessel of claim 4 that further includes a launder in communication with the outlet so that fluid exiting the outlet passes into the launder.

21 . The vessel of claim 1 wherein the opening is 3″ or more above the inner-bottom surface.

22 . The vessel of claim 4 that has walls, and the stationary transfer section has three walls inside the vessel and shares a fourth, common wall with the vessel.

Assignees

• Molten Metal Equipment Innovations Llc

Inventors

• Cooper Paul V
• Fontana Vincent D

Classifications

• Y10T29/49

  Method of mechanical manufacture · CPC title

• B22D7/00

  Casting ingots, {e.g. from ferrous metals}(equipment for conveying molten metal B22D35/00) · CPC title

• B22D41/00

  Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like (B22D39/00, B22D43/00 take precedence) · CPC title

• C22B21/0084

  melting and handling molten aluminium (C22B21/02, C22B21/04 and C22B21/06 take precedence) · CPC title

• F27D27/005

  Pumps · CPC title