Blast furnace replacement large sleeve drawing device

Abstract

The invention discloses a blast furnace replacement large sleeve drawing device. The device comprises a car body moving mechanism, a support base, a support beam, a length adjusting mechanism, handles, hook heads, a fixed rod, a spiral press and a mobile hook head support mechanism; a mounting platform is formed on the top surface of the car body moving mechanism; the support base is arranged on the mounting platform; the length adjusting mechanism is connected with the tail ends of the hook heads, and can adjust the length in the horizontal direction; two handles are respectively arranged on the outer sides of two hook heads; one end of the fixed rod is connected with the tail part of the length adjusting mechanism, and the other end penetrates through empty areas of the handles; the spiral press is positioned between the support beam and the mobile support base; the mobile hook head support mechanism is slidingly arranged between rod parts of two hook heads; and the two hook heads are connected with the length adjusting structure after penetrating through holes in the support beam and the support base in sequence. The blast furnace replacement large sleeve drawing device has the advantages of small size, long service life, flexible adjustment and low cost.

Description

technical field [0001] The invention relates to the technical field of metallurgical equipment, in particular to a large-set extracting device for blast furnace replacement. Background technique [0002] The large set of devices is the main part of the copper water-cooled air supply device installed in the steel ring of the hearth of the blast furnace. It is located in the tuyere area on the upper part of the hearth of the blast furnace. It is the only oxidation zone inside the blast furnace. During the normal production of the blast furnace, hot air with a pressure of 0.370 MPa, an air volume of 4800 cubic meters per minute, and a temperature of 1200-1300 °C enters the blast furnace through the air supply device. The hot air, coke, coal powder and other fuels swirl in the tuyere A violent combustion reaction occurs in the area, releasing a large amount of heat. The theoretical combustion temperature in front of the tuyere is as high as 2300°C. The working conditions of the...

AI Technical Summary

Problems solved by technology

If the large sleeve is damaged, the blast furnace must be shut down and replaced immediately, otherwise it will easily cause blast furnace tuyeres and large sleeve burn-through accidents, which will directly affect safety and production

[0003] The alkali metal and zinc vapors generated during blast furnace production circulate and enrich in the tuyere area. Since the large set is a water-cooled device, the alkali metal zinc vapor sticks to the outer surface of the large set and penetrates into the brick lining in the tuyere area when it is cold. The extension causes the large set to be upturned, causing the center line of the tuyere to move upward by 4°, which makes it difficult to replace the large set of devices

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