Rotary nozzle system
AssigneesNippon Kokan Kabushiki Kaisha, Nippon Rotary Nozzle Co., Ltd., Kokan Kikai Kogyo Kabushiki Kaisha, Tokyo Yogyo Kabushiki Kaisha
InventorTetsuya Yoshihara
Life of this patent
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Abstract
A rotary nozzle system attached to the outlet of a metallurgical vessel to serve as a gate valve for controlling the rate of pouring of molten metal. A slide plate brick and bottom plate brick, each having a nozzle bore, are relatively rotated in a surface-to-surface contact condition to adjust the degree of communication opening of the nozzle bores. Each of the plate bricks is formed on the outer peripheral surface thereof with a flat portion for receiving the driving force for the relative reaction force at each of four locations arranged at angular intervals of 90.degree..
Claims9
In a rotary nozzle system of the type in which a slide plate brick and bottom plate brick, each thereof having at least one nozzle bore, are relatively rotated in a surface-to-surface contact condition to adjust a degree of communication opening of said nozzle bores to control a rate of pouring of molten metal, each of said plate bricks being formed on an outer peripheral surface thereof with a flat portion at each of four locations arranged at angular intervals of 90.degree. for receiving a driving force for said relative rotation and a reaction force.
In a rotary nozzle system of the type in which a slide plate brick and bottom plate brick, each thereof having at least one nozzle bore, are relatively rotated in a surface-to-surface contact condition to adjust a degree of communication opening of said nozzle bores to control a rate of pouring of molten metal, each of said plate bricks being formed on an outer peripheral surface thereof with a flat portion at each of four locations arranged at angular intervals of 90.degree. for receiving a driving force for said relative rotation.
In a rotary nozzle system of the type in which a slide plate brick and bottom plate brick, each thereof having at least one nozzle bore, are relatively rotated in a surface-to-surface contact condition to adjust a degree of communication opening of said nozzle bores to control a rate of pouring of molten metal, each of said plate bricks being formed on an outer peripheral surface thereof with a flat portion at each of four locations arranged at angular intervals of 90.degree. for receiving a reaction force.
Dependencies are inferred from the claim text.