Energy-saving environment-friendly multifunctional smelting furnace

The utility model discloses an energy-saving and environment-friendly multifunctional smelting furnace. The cupola furnace comprises a cupola furnace body and a feeding device. A self-suction feedingdevice is fixedly arranged in the top of the cupola furnace; the system further comprises a gravity dust collector, a plurality of dust removal purifiers, a plurality of hot air combustion chambers, afan and a coal gas purification combustion chamber. The furnace top is sequentially connected with a gravity dust collector and a dust removal purifier in series through a smoke exhaust pipeline. Theupper ends and the lower ends of the dust removal purifiers are connected in series through pipelines; the pipeline located at the lower end is connected with the multiple hot air combustion chambersin series, the draught fan is connected with the multiple hot air combustion chambers in parallel, the coal gas purification combustion chamber is connected with a smoke exhaust pipeline between thegravity dust remover and the