TRANSFER PUMP LAUNDER SYSTEM

• US 20180311726A1
• Filed: 07/09/2018
• Published: 11/01/2018
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: Molten Metal Equipment Innovations Incorporated (Molten)
• Original Assignee: Molten Metal Equipment Innovations Incorporated (Molten)
• Inventors: Cooper, Paul V.
• Granted Patent: US 10,307,821 B2
• Time in Patent Office: Days
• CPC Class Codes: B22D 45/00 Equipment for casting, not otherwise provided for
• CPC Class Codes: F04D 29/607 means for positioning from outside
• CPC Class Codes: F04D 7/065 for liquid metal
• CPC Class Codes: Y10T 137/85978 With pump

Abstract

Disclosed is a transfer pump having a pump base with a pump chamber, tangential discharge and an outlet in the top surface of the pump base. A riser tube extends from the outlet and terminates at a launder in order to move molten metal out of a vessel with relatively little turbulence.

Claims

1. A pump configured to be positioned in a vessel that contains molten metal, the pump comprising:

(a) a pump base having a pump chamber, a top surface, and an output port;

(b) a riser tube having a passage therethrough, a proximal end having an opening in communication with the passage, the proximal end attached to the output port, a distal end opposite the proximal end, wherein the distal end has an opening in communication with the passage, the distal end being open;

(c) a superstructure above the output port, the riser tube being supported by the superstructure;

(d) a launder extending from the vessel to a second vessel, the launder having an open top, and a bottom having a launder opening; and

(e) the distal end of the riser tube being positioned in the launder opening, and terminating at or above the bottom surface of the launder.

2. The pump of claim 1, wherein the distal end of the riser tube is cemented in the opening.

3. The pump of claim 1, wherein the launder opening is juxtaposed a first end of the launder.

4. The pump of claim 1, wherein the distal end of the riser tube terminates at or above the launder opening.

5. The pump of claim 1, wherein the launder has a raised launder back portion that extends above the launder opening.

6. The pump of claim 3, wherein the distal end of the riser tube has a raised riser tube back portion and a lower front portion, the front portion having a height between:

being 3″

above the top surface of the launder to being even with the open top of the launder.

7. The pump of claim 5, wherein the raised launder back portion has a height between:

being even with the top surface of the launder to being 3″

above the top surface of the launder.

8. The pump of claim 6, wherein the raised riser tube back portion has a height between:

being even with the top surface of the launder to being 3″

above the top surface of the launder

9. The pump of claim 1 that includes a motor positioned on the superstructure.

10. The pump of claim 9 that includes support posts attached to the pump base and to the superstructure.

11. The pump of claim 10 that includes a drive shaft having a first end connected to the motor, and a second end connected to a rotor, wherein the rotor is positioned in the pump chamber.

12. The pump of claim 11, wherein the drive shaft comprises a rotor shaft having an end that is received in a coupling, and a motor shaft having an end that is also received in the coupling.

13. The pump of claim 12, wherein the second end of the rotor shaft is threadingly received in the rotor.

14. The pump of claim 1, wherein the launder has a first portion on one side of the opening and a second portion on the second side of the opening.

15. The pump of claim 1, wherein the distal end of the riser tube terminates within 3″

above the top surface of the launder.

16. The pump of claim 1, wherein the pump base has a side surface and the pump outlet is in the side surface.

17. The pump of claim 1, wherein the proximal end of the riser tube is an extension piece formed as an elbow to direct the flow from the output port upwards.

18. The pump of claim 1, wherein the distal end of the riser tube has a raised back portion and a front portion being lower than the back portion.

19. The pump of claim 17, wherein the front portion is at a height between:

being even with the top surface of the launder to being 3″

above the bottom of the launder.

20. The pump of claim 1, wherein the launder opening is annular and forms part of a first end of the launder.