Outlet valves for melt containing vessels
AssigneeBritish Steel Corporation
InventorJames Monks
Life of this patent
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Abstract
An outlet valve for a melt-containing vessel includes a lower insert piece mounted in the base of the vessel having an outlet bore passing therethrough from the inside to the outside of the vessel, and an elongate shaft located above and pressed down upon the lower insert piece. The shaft has a lower face mating with an upper face of the lower insert piece and is rotatable relative to the lower insert piece about a generally vertical axis. The bore through the lower insert piece is offset, at least at its upper end, from the axis of rotation. The shaft has a side opening at the lower end thereof capable of aligning with the top of the bore through the lower insert piece in at least one rotational position.
Claims14
An oultet valve for a melt-containing vessel comprising a lower insert piece of refractory material rigidly mounted in the base of the vessel and having an outlet bore passing therethrough from the inside to the outside of the vessel, the bore opening into an orifice in an upper face of said insert piece, an elongate refractory shaft located over and pressed down from above upon the lower insert piece, the shaft having on its underside a lower face mating with the upper face of the lower insert piece, the shaft being rotatable about its elongate axis upon the lower insert piece, the bore through the lower insert piece being offset, at least at its upper end, from the axis of rotation, the orifice of the bore in the upper face of said insert piece being inset from the side edges of the overlaying lower face of the shaft and the shaft having a side opening at the lower end thereof capable of aligning with the orifice of the bore through the lower insert piece in at least one rotational position.
Dependencies are inferred from the claim text.