Environment friendly scrap preheater

The utility model relates to an arc furnace scrap preheater used for smelting metal materials. At present, a plurality of kinds of arc furnace scrap preheaters oversea all have a problem that when steel scraps are added, flue gas overflows, and peripheral environment of equipment is seriously polluted by the flue gas. The arc furnace scrap preheater comprises a vertical shaft, a shutter mechanism, a trough, a steel pushing device, a pushing box, a top cover and a horizontal moving mechanism. The vertical shaft is divided into an upper vertical shaft and a lower vertical shaft through the shutter mechanism arranged in a cavity, the trough is arranged on the bottom of the lower vertical shaft and provided with the steel pushing device and the pushing box, and one end of the trough is communicated with a side furnace opening of the arc furnace. The top cover is arranged on the top of the vertical shaft, and the lower end of the trough is provided with the horizontal moving mechanism. The arc furnace scrap prehea