Air cooled molten metal pump frame

• US 5,303,903 A
• Filed: 12/16/1992
• Issued: 04/19/1994
• Est. Priority Date: 12/16/1992
• Status: Expired due to Fees

• Current Assignee: Reynolds Metals Company (Howmet Aerospace, Inc.)
• Original Assignee: Reynolds Metals Company (Howmet Aerospace, Inc.)
• Inventors: Butler, Warren G., Hornsby, Dale C., Perkins, Henry C.
• Primary Examiner(s): KASTLER, SCOTT R
• Application Number:
  US07/991,624
• Time in Patent Office: 489 Days
• Field of Search: 266/287, 266/236, 266/239, 432/234
• US Class Current: 266/239
• CPC Class Codes: C22B 21/066 Treatment of circulating aluminium, e.g. by filtration C22B21/068 takes precedence
• CPC Class Codes: F27D 2003/0054 Means to move molten metal, e.g. electromagnetic pump
• CPC Class Codes: F27D 2009/0005 the cooling medium being a gas
• CPC Class Codes: F27D 3/14 Charging or discharging liquid or molten material

Abstract

An air cooled molten metal pump frame includes a base structure and molten metal pump supporting structure comprising tubular members to facilitate flow of cooling air therethrough. The cooling air flowing through the molten metal pump frame provides cooling to the pump frame to minimize distortion and deformation due to the high temperatures caused by an adjacent molten metal bath. The cooling air flowing through the pump frame can also be directed to the molten metal pump to cool pump components. The tubular frame also facilitates simple and effective connection between a source of electrical power and the molten metal pump while shielding the electrical wiring from heat damage due to the proximity of the molten metal bath. The molten metal pump frame is particularly adapted for supporting molten metal pumps used in aluminum reclamation furnaces.

Claims

1. A molten metal pump frame comprising:

a) a base frame; and

b) a molten metal pump supporting structure integrally attached to said base frame for supporting a molten metal pump, wherein said base frame and said molten metal pump supporting structure are sized to form a portable molten metal pump frame to facilitate positioning over a molten metal bath;

c) said base frame further comprising;

i) a first passageway therethrough;

ii) a cooling fluid inlet for receiving a source of forced cooling fluid, said inlet being in communication with said first passageway;

iii) means for connecting a source of electrical power to said molten metal pump;

iv) a first cooling fluid outlet to provide flow of cooling fluid to components of said molten metal pump, said first cooling fluid outlet being in communication with said first passageway;

d) said molten metal pump supporting structure further comprising a second passageway and a second cooling fluid outlet in communication with said second passageway to facilitate flow of cooling fluid through said molten metal pump frame, said second passageway being in communication with said first passageway.

2. The frame of claim 1 wherein said cooling fluid inlet includes a means for coupling to said source of cooling fluid.

3. The frame of claim 1 wherein said cooling fluid inlet includes a first means for coupling to said source of cooling fluid and said second cooling fluid outlet includes a second means for coupling to a component of said molten metal pump.

4. The frame of claim 1 wherein said means for connecting a source of electrical power further comprises:

i) an electrical connection adapted to connect to a source of electrical power, said electrical connection mounted on said base structure; and

ii) electrical wiring extending from said electrical connection and through at least a portion of said first passageway to an electrical wiring outlet mounted on said base structure, said electrical wiring for connection to electrically powered components of said molten metal pump.

5. The frame of claim 4 further including a shielded conduit for housing said electrical wiring extending outwardly from said electrical wiring outlet to said electrically powered components.

6. The frame of claim 5 wherein said shielded conduit includes a third passageway therethrough to permit said cooling fluid to flow therethrough.

7. The frame of claim 1 wherein said molten metal pump supporting structure further comprises a pair of spaced apart elongated members, one end of each elongated member attached to said base frame with the opposite end of each elongated member including a said cooling fluid outlet.

8. The frame of claim 7 wherein each said cooling fluid outlet includes an orifice arranged at each said opposite end.

9. The frame of claim 1 wherein said means for connecting a source of electrical power further comprises:

i) an electrical connection adapted to connect to a source of electrical power, said electrical connection mounted on said base structure; and

ii) electrical wiring extending from said electrical connection and through at least a portion of said first passageway to an electrical wiring outlet mounted on said base structure, said electrical wiring for connection to electrically powered components of said molten metal pump.

10. The frame of claim 9 wherein said cooling fluid inlet includes a first means for coupling to said source of cooling fluid and said another cooling fluid outlet includes a second means for coupling to a component of said molten metal pump.

11. The frame of claim 10 wherein said first and second means for coupling include flexible hose.

12. The frame of claim 11 wherein said molten metal pump supporting structure further comprises a pair of spaced apart elongated members, one end of each elongated member attached to said base frame with the opposite end of each elongated member including said cooling fluid outlet.

13. In a method of supporting a molten metal pump over an open surfaced molten metal bath on a molten metal pump frame and pumping molten metal in said bath, the improvement comprising the steps of:

a) providing a source of cooling fluid;

b) providing a molten metal pump frame having a base structure for supporting said molten metal pump frame and a molten metal pump supporting structure integrally attached to said base structure, wherein said base frame and said molten metal pump supporting structure are sized to form a portable molten metal pump frame to facilitate positioning over a molten metal bath, said molten metal pump frame including a passageway therethrough;

c) flowing said cooling fluid through said passageway to cool said molten metal pump frame during said pumping of molten metal; and

d) providing said molten metal pump frame with another passageway and flowing said cooling fluid to said molten metal pump through said another passageway for cooling of molten metal pump components.

14. The method of claim 13 further comprising the step of providing a means for electrically connecting said molten pump to a source of electrical power, said means for electrically connecting associated with said base structure.