Claims
- 1. A shut-off and control valve for use in regulating the discharge of molten metal from a metallurgical vessel into a continuous casting plant for continuous casting of a trip or a thin slab having a relatively wide width and a relatively thin thickness, said valve comprising:
- an elongated refractory stator having therein an elongated recess defined by a cylindrical inner surface concentric about a longitudinal axis of said stator, said stator having therethrough discharge channel means elongated in a direction parallel to said longitudinal axis said stator being mountable adjacent an elongated outlet of a metallurgical vessel;
- an elongated refractory rotor to be rotatable about a longitudinal axis of said rotor and having a cylindrical peripheral outer surface arranged symmetrically about said longitudinal axis of said rotor and complementary to said inner surface of said stator, said rotor having therethrough flow channel means elongated in a direction parallel to said longitudinal axis of said rotor;
- said rotor being fitted within said recess in said stator with said outer and inner surfaces of said rotor and stator, respectively, being symmetrically positioned about said longitudinal axes and being in sealing contact with each other, such that at least one of rotation of said rotor about said axes relative to said stator and axial movement of said rotor within said recess relative to said stator selectively bring said flow channel means of said rotor relatively into and out of alignment with said discharge channel means of said stator; and
- said discharge channel means and said flow channel means having lengths in directions parallel to said axes to approximately define the width of a strip or slab to be cast.
- 2. A valve as claimed in claim 1, wherein said discharge channel means of said stator has at least one inlet and at least one outlet opening onto said inner surface, and said flow channel means of said rotor has at least one inlet and at least one outlet opening onto said outer surface.
- 3. A valve as claimed in claim 1, wherein said discharge channel means comprises a single slot-shaped passage extending through said stator and having an axial length almost equal to the axial length of said stator.
- 4. A valve as claimed in claim 1, wherein said discharge channel means comprise a plurality of slot-shaped passages extending through said stator and spaced axially along the length of said stator.
- 5. A valve as claimed in claim 4, wherein adjacent of said slot-shaped passages are spaced by a distance greater than the axial length of said slot-shaped passages.
- 6. A valve as claimed in claim 1, wherein said stator comprises a plurality of stator portions joined axially end-to-end.
- 7. A valve as claimed in claim 1, wherein the width of said discharge channel means, as viewed axially of said stator, is uniform.
- 8. A valve as claimed in claim 1, wherein said discharge channel means includes a widened inlet portion.
- 9. A valve as claimed in claim 1, wherein said discharge channel means extends diametrally of said axis.
- 10. A valve as claimed in claim 1, wherein said discharge channel means includes first and second radial portions inclined to each other and intersecting at said axis.
- 11. A valve as claimed in claim 1, wherein said stator comprises a cylindrical tube.
- 12. A valve as claimed in claim 1, wherein said stator has a substantially rectangular exterior configuration.
- 13. A valve as claimed in claim 1, wherein said flow channel means comprises a single slot-shaped passage extending through said rotor and having an axial length almost equal to the axial length of said rotor.
- 14. A valve as claimed in claim 1, wherein said flow channel means comprise a plurality of slot-shaped passages extending through said rotor and spaced axially along the length of said rotor.
- 15. A valve as claimed in claim 14, wherein adjacent of said slot-shaped passages are spaced by a distance greater than the axial length of said slot-shaped passages.
- 16. A valve as claimed in claim 1, wherein said rotor comprises a plurality of rotor portions joined axially end-to-end.
- 17. A valve as claimed in claim 1, wherein the width of said flow channel means, as viewed axially of said rotor, is uniform.
- 18. A valve as claimed in claim 1, wherein said flow channel means includes a widened inlet portion.
- 19. A valve as claimed in claim 1, wherein said flow channel means extends diametrally of said axis.
- 20. A valve as claimed in claim 1, wherein said flow channel means includes first and second radial portions inclined to each other and intersecting at said axis.
- 21. A valve as claimed in claim 1, wherein said rotor comprises a cylindrical tube.
- 22. A valve as claimed in claim 1, wherein said rotor comprises a solid cylindrical body except for said flow channel means.
- 23. An assembly comprising a metallurgical vessel including a bottom wall having a refractory lining, at least one side wall having a refractory lining, and a shut-off and control valve mounted at least partially within at least one of said refractory linings for regulating the discharge of molten meal from said metallurgical vessel into a continuous casting plant for continuous casting of a strip or a thin slab having a relatively wide width and a relatively thin thickness, said shut-off and control device comprising:
- an elongated refractory stator having therein an elongated recess defined by a cylindrical inner surface concentric about a longitudinal axis of said stator, said stator having therethrough discharge channel means elongated in a direction parallel to said longitudinal axis, said stator being mounted adjacent an elongated outlet of aid metallurgical vessel;
- an elongated refractory rotor rotatable about a longitudinal axis of said rotor and having a cylindrical peripheral outer surface arranged symmetrically about said longitudinal axis of said rotor and complementary to said inner surface of said stator, said rotor having therethrough flow channel means elongated in a direction parallel to said longitudinal axis of said rotor;
- said rotor being fitted within said recess in said stator with said outer and inner surfaces of said rotor and stator, respectively, being symmetrically positioned about said longitudinal axes and being in sealing contact with each other, such that at least one of rotation of said rotor about said axes relative to said stator and axial movement of said rotor within said recess relative to said stator selectively bring said flow channel means of said rotor relatively into and out of alignment with said discharge channel means of said stator; and
- said discharge channel means and said flow channel means having lengths in directions parallel to said axes to approximately define the width of a strip or slab to be cast.
- 24. An assembly as claimed in claim 23, wherein at least a portion of said valve extends above said refractory lining of said bottom wall.
- 25. An assembly as claimed in claim 23, further comprising an elongated refractory outlet block leading from said bottom wall of said vessel, and said valve is mounted on an inlet end of said outlet clock.
- 26. An assembly as claimed in claim 23, wherein said valve is mounted in said refractory lining of said bottom wall.
- 27. An assembly as claimed in claim 23 wherein said valve is mounted in and forms part of an area of juncture of said refractory linings of said bottom and side walls.
- 28. An assembly as claimed in claim 23, wherein said valve is longitudinally insertable through and withdrawable from said side wall, and said rotor has an end that is rotatable from the exterior of said side wall.
- 29. An assembly as claimed in claim 23, comprising two spaced said side walls, and wherein said valve has opposite ends extending through respective said side walls.
- 30. An assembly as claimed in claim 29, wherein said rotor is axially removable from said stator by being axially pushed therefrom by a new rotor being axially pushed into said stator, even when said vessel contains molten metal.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3805071 |
Feb 1988 |
DEX |
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Parent Case Info
This application is a continuation of now abandoned application Ser. No. 310,672, filed Feb. 14, 1989.
US Referenced Citations (6)
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Non-Patent Literature Citations (1)
Entry |
Fachberichte Huttenpraxis Metallweiterverarbeitung, vol. 24, No. 8/ Dec. 1986, p. 709, "Trials Success for Rotary Valve". |
Continuations (1)
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Number |
Date |
Country |
Parent |
310672 |
Feb 1989 |
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