Overhead shielding door of electric furnace

Abstract

The invention provides an overhead shielding door of an electric furnace. The overhead shielding door comprises at least one upper shielding sliding door, at least one lower shielding sliding door anda cross beam, wherein the longitudinal sections of the upper shielding sliding door and the lower shielding sliding door are both inverted L-shaped; the longitudinal section of the cross beam is L-shaped; walking mechanisms are respectively arranged between the upper shielding sliding door and a top wall, between the upper shielding sliding door and the cross beam and between the cross beam and the lower shielding sliding door; each walking mechanism comprises a walking track, a walking wheel and a walking electrode; a support column is arranged below the cross beam; a smoke exhaust hole anda smoke exhaust fan are arranged in the middle of a transverse structure of the upper shielding sliding door; and a smoke exhaust hood is arranged on the transverse structure of the upper shielding sliding door. The overhead shielding door adopts an overhead track and four-wheel drive of an inverted L-shaped electric furnace doghouse door to stably operate, solves the problem that a traditional floor type track is easily blocked by furnace platform steel slag garbage, and prevents deformation of the doghouse door caused by upper and lower two-drive form; and meanwhile, smoke exhaust devices are additionally arranged at the top, and are arranged in an array form, so that a lot of waste gas gathered at the upper part of the electric furnace can be collected, and the environmental pollution is reduced.

Description

Technical field [0001] The invention belongs to the field of metallurgical machinery and relates to an electric furnace elevated screen door. Background technique [0002] The main function of a large electric furnace is to melt and smelt scrap steel into high-quality molten steel through a high-energy electric arc. However, since most of the objects smelted by the electric furnace are scrap steel and pre-treated molten iron, the site environment is relatively harsh, so the site must take measures to shield molten iron splash and smelting noise. A closed space is formed near the main body of the electric furnace to compress the flue gas emission space, which can greatly reduce the amount of dust removal air, and under the premise of ensuring the dust removal effect, reduce power consumption and help reduce production costs. The establishment of a closed space in the electric furnace steelmaking workshop is also of great benefit to improving the safety and health of the employee...

AI Technical Summary

Problems solved by technology

However, due to the harsh operating environment of the electric furnace feeding sliding door, it is easy to deform during use, and there is not much successful experience in long-term use.

In the actual use process, there are the following problems: the floor-mounted track is easily blocked by the steel slag garbage on the furnace platform, resulting in the deformation of the doghouse door due to the upper and lower driving forms; a large amount of exhaust gas collects from the upper part of the electric furnace and cannot be collected, and begins to diffuse in the factory building. As a result, there is a layer of dust particles everywhere in the factory building, which is difficult to clean up and causes serious environmental pollution.

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