| 摘要 |
PURPOSE: An automatic nozzle spraying device for protecting tapping hole is provided which is inserted into the tapping hole during blowing in the converter process to improve quality of products by preventing wear of sleeve and always maintaining tapping time constantly. CONSTITUTION: The automatic nozzle spraying device for protecting tapping hole comprises a spraying material supply part that is installed at the outer part of the tapping hole(32) to supply spraying materials(51) that are easily hardened; and a spray nozzle(10) which is movably installed at the inlet of the tapping hole(32) and connected to the spraying material supply part, and on the outer circumferential surface of which a plurality of nozzle holes(2) are formed, wherein the automatic nozzle spraying device protects the tapping hole(32) and maintains the constant tapping state by spraying the spraying materials(51) onto an area of the tapping hole(32) using the spray nozzle(10), the spray nozzle(10) comprises a cylindrical nozzle body(1), the nozzle holes(2) are uniformly arranged on the circumferential surface of the nozzle body(1), a nozzle head is mounted on one side part of the nozzle body(1), rectangular nozzle holes are formed on the outer circumferential surface of the nozzle head, a plate is mounted in front of the rectangular nozzle holes, and an injection block is mounted on the other side part of the nozzle body(1) so that the spraying materials(51) are uniformly circumferentially sprayed through the nozzle holes(2).
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