Stator and rotor members for use in apparatus for closing and/or

Details Stator and rotor members for use in apparatus for closing and/or Stator and rotor members for use in apparatus for closing and/or

1991-12-11

1993-07-27

Kastler, Scott

Dispensing

Molten metal dispensing

Flow controllers or assists

222597, 222598, B22D 4114

Patent

active

052308138

ABSTRACT:
An apparatus for closing and/or regulating the discharge or tapping of molten metal from a metallurgical vessel is formed by a ceramic stator member to be fixed to a metallurgical vessel and having a pipe-shaped portion having extending therethrough at least one lateral opening, and a ceramic rotor member having a pipe-shaped portion having extending therethrough at least one lateral opening. The stator and rotor members are coaxially assembled with the pipe-shaped portion of one member fitted over and surrounding the pipe-shaped portion of the other member. The pipe-shaped portions have radially confronting respective cylindrical inner and outer sealing surfaces onto which open the lateral openings, such inner and outer sealing surfaces sealingly engaging to define a primary seal to prevent leakage of molten metal. The stator and rotor members have respective axially confronting end sealing surfaces. The rotor member is axially movable, i.e. loadable, to press the end sealing surface of the rotor member against the end sealing surface of the stator member at a compaction pressure sufficient to form a secondary seal for preventing leakage of molten metal.

REFERENCES:
patent: 3651998 (1972-03-01), Rocher
patent: 4905876 (1990-03-01), Gimpera
patent: 4966314 (1990-10-01), Bruckner et al.
patent: 5058784 (1991-10-01), Hintzen et al.
patent: 5078306 (1992-01-01), Keller et al.

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