| 摘要 |
PURPOSE: A device for preventing air from inflowing to slide gate is provided to easily and rapidly perform the replacement of a dipping nozzle as surface pressure between the dipping nozzle and a lower valve plate is generated by using press-supporting unit. CONSTITUTION: A device for preventing air from inflowing to slide gate comprises a housing unit(100), an upper valve plate(10), a middle valve plate(20), a lower valve plate, a compressive fastening member(300), a cylinder unit(400), a gas inlet(400), and a gas outlet(140). The compressive fastening member is composed of a compartment(320), a fastening pin(330), a compressive spring(340), a through-hole, and a fastening piece(360).
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