Asphalt heating device of mixing unit

The utility model provides an asphalt heating device of a mixing unit, relating to the field of heating engineering. The asphalt heating device is structurally characterized in that an asphalt tank 1 is a horizontal tank body with two elliptic sides; a heat insulation layer 2 is arranged on the periphery of the outside of the asphalt tank 1; brackets 3 are arranged at the bottom inside the asphalt tank 1 from bottom to top in sequence, wherein a heat conducting oil coil pipe 4 is arranged on the brackets 3; a pipe inlet 5 of the heat conducting oil coil pipe 4 penetrates from the bottom of the right side of the asphalt tank 1, a pipe outlet 6 of the heat conducting oil coil pipe 4 is guided out from the right side of the asphalt tank 1; and the upper part of the asphalt tank 1 is provided with an asphalt inlet 7, and the lower part of the asphalt tank 1 is provided with an asphalt outlet 8 and a valve 9. The asphalt heating device disclosed by the utility model is simple in structure, uniform to heat, high in