Waste oil smelting fractionating device

The utility model discloses a waste oil smelting and fractionating device. Including a base, the top left side of the base is connected with a supporting seat; the top right side of the base is connected with an oil storage tank; a distillation kettle is arranged between the supporting seat and the oil storage tank; the top of the supporting seat is connected with a filtering box; the upper end ofthe filter box is connected with a feeding pipe; a first oil pipe communicates between the lower end of the filter box and the distillation kettle; a spiral heating pipe is installed on the side wallof an inner cavity of the distillation still, a first oil cavity is formed in the upper portion of the inner cavity of the oil storage tank, a second oil cavity is formed in the lower portion of theinner cavity of the oil storage tank, an air guide pipe communicates between the top of the distillation still and the first oil cavity, and a second oil pipe communicates between the bottom of the distillation still and the se