External feeding device of smelting furnace

The utility model discloses an external feeding device of a smelting furnace, which comprises a support base, a guide device is fixedly mounted at the top of the support base, and a dumping device is movably mounted in the guide device. According to the scheme, raw materials are manually placed in the placing hopper, the driving device is started, the driving device drives the rotating screw rod to rotate, at the moment, the threaded hole slides in the sliding groove under the action of the rotating screw rod, the threaded hole drives the telescopic rod to move, and the telescopic rod transmits force to the placing hopper; when the placing hopper reaches the top, a rolling wheel at the front end of the placing hopper enters a groove from a falling groove, the placing hopper is inclined, raw materials in the placing hopper enter the smelting furnace from a feeding opening of the smelting furnace body, feeding is completed, then the driving device rotates reversely, and the raw materials in the placing hopper a