SEALING DEVICE FOR TUYERE PART AT STOPPING OF BLASTING

摘要

PROBLEM TO BE SOLVED: To provide a sealing device for tuyere part at stopping of blasting, which can easily fit and can uniformly seal in the passage of the tuyere and surely checks in a furnace under sealing state. SOLUTION: This sealing device 10 for tuyere part at stopping of the blasting, is the one closing the passage of the tuyere 11 at stopping of the blasting in a blast furnace to prevent the suction of the air into the blast furnace. Then this device is provided with plural link mechanisms 13 which arrange at the tip part of a double tube 12 having an inner tube 16 and an outer tube 17 and change a substantial distance from the axis of the double tube 12 at the fitting part 27 arranged to the outside in the radial direction by relatively shifting the inner tube 16 to the outer tube 17, circular arc-state members 28 and 28a arranged to the fitting part 27 in each link mechanism 13, refractoriness cloth 14 disposed by covering an annular body formed with the circular arc-state members 28 and 28a fitted to each link mechanism 13 and having a fixed thickness and fastening means 32 and 15 arranged at the front side and/or the rear side of the link mechanism 13 and fixing the end part of the cylindrical refractoriness cloth 14.