Asphalt heating and heat preservation device

The utility model relates to the technical field of heating and heat preservation devices, in particular to an asphalt heating and heat preservation device which comprises a connecting piece, the connecting piece is communicated with a water inlet pipe, a hot asphalt pipe and a discharging pipe, and the hot asphalt pipe and the discharging pipe are each sleeved with a heat preservation sleeve in a sealed mode. Wherein heat preservation cavities are formed between the inner wall of one heat preservation sleeve and the outer wall of the hot asphalt pipe and between the inner wall of the other heat preservation sleeve and the outer wall of the discharging pipe, the two heat preservation cavities are communicated with each other, and heat conduction oil flows in the two heat preservation cavities. It can be guaranteed that the interior of the pipeline can reach the specified temperature. 本申请涉及加热保温装置的技术领域，尤其是涉及一种沥青加热保温装置，其包括连接件，连接件上连通有进水管、热沥青管和出料管，热沥青管和出料管上均密封套设有保温套，其中一个保温套内壁与热沥青管外壁之间以及另一个保温套内壁与出料管外壁之间均形成了保温腔，两个保温