Molten metal transfer system and rotor

Patent metadata

Field	Value
Publication number	US-9566645-B2
Application number	US-201514808935-A
Country	US
Kind code	B2
Filing date	Jul 24, 2015
Priority date	Jun 21, 2007
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

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 rotor with blades for directing molten metal towards the rotor interior and away from the rotor interior, wherein each rotor blade comprises:
(a) a first portion having first upper surface angled to direct molten metal upwards;
(b) a second portion separate from, directly juxtaposed to, and at least partially above the first portion, and having a second upper surface angled to direct molten metal upwards; and
(c) a third portion separate from, juxtaposed to, and at least partially above the second portion, and having at least one outwardly-projecting surface.

2. The rotor of claim 1 that further includes a connective portion for connecting to a rotor shaft.

3. The rotor of claim 2 wherein the connective portion includes a threaded bore.

4. The rotor of claim 1 wherein the first upper surface has an angle of between 15° and 45°.

5. The rotor of claim 1 wherein the second upper surface has an angle of between 45° and 70°.

6. The rotor of claim 1 wherein the first upper surface has an angle of between 10° and 45°.

7. The rotor of claim 1 wherein the second upper surface has an angle of between 10° and 60°.

8. The rotor of claim 1 wherein the angle of the first upper surface is +/−10° of the angle of the second upper surface.

9. The rotor of claim 1 that has three, equally-radially-spaced blades.

10. The rotor of claim 1 that is comprised of graphite.

11. The rotor of claim 1 wherein each blade further includes a top surface and a recess opposite the outwardly-projecting surface, the recess extending downward from the top surface at an angle greater than 90° and less than 180° from a vertical axis.

12. The rotor of claim 1 that further comprises a second outwardly-projecting surface to project molten metal outward away from the blade.

13. The rotor of claim 1 that further comprises a recess on each rotor blade opposite the outwardly-projecting surface.

14. The rotor of claim 12 that further comprises a recess on each rotor blade opposite the outwardly-projecting surface.

15. The rotor of claim 12 wherein the recess is formed at an angle greater than 90° and less than 180° as measured from a vertical axis.

16. The rotor of claim 13 wherein the recess is formed at an angle greater than 90° and less than 180° as measured from the vertical axis.

17. The rotor of claim 15 wherein the blade has a top surface and a ledge extending between the upper surface and the recess.

18. The rotor of claim 16 wherein the blade has a top surface and a ledge extending between the upper surface and the recess.

19. The rotor of claim 12 that has a second outward-projecting surface to project molten metal outward away from the blade.

20. The rotor of claim 19 wherein the first outward-projecting surface is on one portion of the blade and the second outward projecting portion is on a second portion of the blade.

21. A rotor with blades for directing molten metal towards the rotor interior and away from the rotor interior, the rotor comprising one or more rotor blades, wherein each rotor blade comprises:
(a) a first portion having a first surface angled to direct molten metal towards the rotor interior;
(b) a second portion separate from, juxtaposed to, and at least partially closer to the rotor interior than the first portion, and having a second surface angled to direct molten metal towards the rotor interior; and
(c) a third portion separate from, and juxtaposed to the second portion, and having at least one outwardly-projecting surface.

22. The rotor of claim 6 wherein the angle of the second upper surface is greater than the angle of the first upper surface.

23. The rotor of claim 7 wherein the angle of the second upper surface is greater than the angle of the first upper surface.

Assignees

• Molten Metal Equipment Innovations Llc

Inventors

• Cooper Paul V
• Fontana Vincent D

Classifications

• B22D39/00

  Equipment for supplying molten metal in rations · CPC title

• B22D41/00

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

• F27D3/14

  Charging or discharging liquid or molten material · CPC title

• B22D7/00

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

• B22D37/00

  Controlling or regulating the pouring of molten metal from a casting melt-holding vessel ({B22D11/18,} B22D39/00, B22D41/00 take precedence) · CPC title