Device for discharging molten metal from a container
AssigneeDanieli & C.Officine Meccaniche S.p.A.
InventorsBrian W. Botham, Gianni Zomero, Andrea De Luca
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Abstract
A device for discharging molten metal from a container to another, comprising an outlet sleeve which penetrates into the lower container pushed by springs against a nozzle of refractory material which connects the inside of the upper container with the outside, so as to make a seal for the molten metal. The outlet sleeve is surrounded by a cylindrical sheath which joins, through a sand joint with a cylindrical blade fixed to the base of the upper container, around the aperture where it faces the nozzle. The sheath and the blade enclose a volume into which an inert gas is injected to remove the air possibly present.
Claims11
A molten metal discharging device between a first upper container (1) and a second container placed below the first container wherein said first container comprises a ring shaped blade (15), fixed to the base of the first container around a molten metal discharging aperture (20),
- a nozzle (19), inserted into said aperture with the lower end protruding from it
- and in which said second container (2) comprises an outlet sleeve (5) the upper end of which is suitable for being coupled with said lower end of the nozzle (19), elastic means (9, 10, 11, 12) adapted to push said outlet sleeve upwards,
- a cylindrical sheath (3) surrounding said outlet sleeve (5) and said elastic means,
- gas sealing means (17) between said sheath (3) and said ring shaped blade (15),
- wherein the cylindrical sheath (3) is integral with the second container (2) and said elastic means (9, 10, 11, 12) are adapted to react against the second container (2) so as to push upwards the outlet sleeve (5).
Dependencies are inferred from the claim text.