On-line adjustment method of air knife used for production of hot galvanized plate and air knife body

Abstract

The invention relates to an on-line adjustment method of an air knife used for production of a hot galvanized plate and an air knife body, belonging to the technical field of hot galvanized plate production in the metallurgical industry. The technical scheme is that: the air knife consists of the air knife body and an adjusting mechanism; the adjusting mechanism comprises a long multi-segment bent axle (11), a bent axle fixing and supporting seat (12), a bent axle connecting rod bearing (14), bent axle connecting rod supporting iron (15), an assembled speed reducer (15), an operating rod connecting hole (17) and an electric controller. The gap between upper and lower knife lips is timely adjusted by the on-line adjustment method; stopping production to disassemble the whole air knife and make the air knife leave a zinc pot through lifting is not required, the time for stopping production to adjust is saved, and the operation rate is improved; the manual adjustment is replaced by the electric control adjustment, the problem that adjusting the work is great in technical difficulty and high in requirement is solved, and the gap between the upper and lower knife lips is kept in the optimum state; the smooth zinc surface is guaranteed, the controllable and adjustable zinc surface is realized, and the zinc consumption is reduced.

Description

technical field [0001] The invention relates to an online adjustment method of an air knife for hot-dip galvanized sheet production and an air-knife body, belonging to the technical field of hot-dip galvanized sheet production in the metallurgical industry. Background technique [0002] At present, according to the requirements of the hot-dip galvanized sheet production process, the zinc liquid in the zinc pot should be kept above 460°C for a long time and in a molten state. The lip clearance changes frequently. Under normal circumstances, the gap between the cutter lips should be adjusted at least once a week during the production process; if there is abnormal air flow or human bumps, it needs to be adjusted at any time. The air knife lip gap adjustment of the background technology is manually adjusted, the air knife is placed above the high temperature of the zinc pot, and the workers cannot operate at close range, and can only lift the air knife body and the knife holder...

AI Technical Summary

Problems solved by technology

When the knife lip is adjusted, the air knife needs to be lifted away from the zinc pot, and the manual adjustment is not only time-consuming and labor-intensive, but also affects the operating rate of the equipment and affects the output. Due to the influence of high temperature, the gap between the knife lip will change slightly at any time, and it also needs to be adjusted. If it is not adjusted, it will also cause slight changes in the coating of the zinc plate. It is difficult to control the zinc layer at the optimal level at any time, which will waste zinc consumption and make it difficult to ensure the quality of the zinc surface.

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