Claims
- 1. An elongated refractory stator capable of use with an elongated refractory rotor to form a shut-off and control valve for regulating the discharge of molten metal from a metallurgical vessel into a continuous casting plant for continuous casting of a strip or a thin slab having a wide width, said stator having:
- an elongated recess defined by a cylindrical inner surface symmetrical about a longitudinal axis, said inner surface having dimensions to be complementary to dimensions of an outer surface of a rotor to be received in said recess and to form a seal with the outer surface while allowing rotation of the rotor relative to said stator; and
- discharge channel means, elongated in a direction parallel to said longitudinal axis, intersecting said recess and having at least one inlet and at least one outlet opening onto said inner surface.
- 2. A stator as claimed in claim 1, wherein said discharge channel means comprises a single slot-shaped passage extending through said slator and having an axial length almost equal to the axial length of said stator.
- 3. A stator 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.
- 4. A stator as claimed in claim 3, wherein adjacent of said slot-shaped passages are spaced by a distance greater than the axial length of said slot-shaped passages.
- 5. A stator as claimed in claim 1, wherein said stator comprises a plurality of stator portions joined axially end-to-end.
- 6. A stator as claimed in claim 1, wherein the width of said discharge channel means, as viewed axially of said stator, is uniform.
- 7. A stator as claimed in claim 1, wherein said discharge channel means includes a widened inlet portion.
- 8. A stator as claimed in claim 1, wherein said discharge channel means extends diametrically of said recess.
- 9. A stator 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.
- 10. A stator as claimed in claim 1, wherein said stator comprises a cylindrical tube.
- 11. A stator as claimed in claim 1, wherein said stator has a substantially rectangular exterior configuration.
- 12. A stator as claimed in claim 1, formed of or including a wear resistant oxide ceramic material.
- 13. A stator as claimed in claim 1, formed of or including ceramic fibers or ceramic fibers and carbon or graphite fibers.
- 14. A stator as claimed in claim 1, wherein at least said inner surface is formed of material containing lubricant.
- 15. A stator as claimed in claim 1, formed of carbon or graphite.
- 16. A stator as claimed in claim 1, formed of a carbon-containing refractory concrete.
- 17. A stator as claimed in claim 1, wherein at least said discharge channel means is defined by surfaces formed by wear resistant oxide ceramic material.
- 18. An elongated refractory rotor capable of use with an elongated refractory stator to form a shut-off and control valve for regulating the discharge of molten metal from a metallurgical vessel into a continuous casting plant for continuous casting of a strip or a thin slab having a width, said rotor having:
- an elongated cylindrical outer peripheral surface symmetrical about a longitudinal axis, said outer surface having dimensions to be complementary to dimensions of an inner surface of a recess in a stator within which said rotor is to be received and to form a seal with said inner surface while allowing rotation of said rotor relative to the stator; and
- flow channel means, elongated in a direction parallel to said longitudinal axis, extending through said rotor and having at least one inlet and at least one outlet opening onto said outer surface.
- 19. A rotor as claimed in claim 18, 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.
- 20. A rotor as claimed in claim 18, 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.
- 21. A rotor as claimed in claim 20, wherein adjacent of said slot-shaped passages are spaced by a distance greater than the axial length of said slot-shaped passages.
- 22. A rotor as claimed in claim 18, wherein said rotor comprises a plurality of rotor portions joined axially end-to-end.
- 23. A rotor as claimed in claim 18, wherein the width of said flow channel means, as viewed axially of said rotor, is uniform.
- 24. A rotor as claimed in claim 18, wherein said flow channel means includes a widened inlet portion.
- 25. A rotor as claimed in claim 18, wherein said flow channel means extends diametrically of said cylindrical outer peripheral surface.
- 26. A rotor as claimed in claim 18, wherein said flow channel means includes first and second radial portions inclined to each other and intersecting at said axis.
- 27. A rotor as claimed in claim 18, wherein said rotor comprises a cylindrical tube.
- 28. A rotor as claimed in claim 18, wherein said rotor comprises a solid cylindrical body except for said flow channel means.
- 29. A rotor as claimed in claim 18, formed of or including a wear resistant oxide ceramic material.
- 30. A rotor as claimed in claim 18, formed of or including ceramic fibers or ceramic fibers and carbon or graphite fibers.
- 31. A rotor as claimed in claim 18, wherein at least said outer surface is formed of material containing lubricant.
- 32. A rotor as claimed in claim 18, formed of carbon or graphite.
- 33. A rotor as claimed in claim 18, formed of a carbon-containing refractory concrete.
- 34. A rotor as claimed in claim 18, wherein at least said flow channel means is defined by surfaces formed by wear resistant oxide ceramic material.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3805071 |
Feb 1988 |
DEX |
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REFERENCE TO RELATED APPLICATIONS
This is a division of Ser. No. 07/310,672, filed Feb. 14, 1989.
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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". |
Divisions (1)
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Number |
Date |
Country |
Parent |
310672 |
Feb 1989 |
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