Thermal insulation layer structure for simplifying joint coating of socket type thermal insulation pipe

The utility model discloses a heat preservation layer structure for simplifying a spigot-and-socket type heat preservation pipe joint, which comprises a first pipeline and a second pipeline, a first heat preservation layer is arranged outside the first pipeline, a second heat preservation layer is arranged outside the second pipeline, one end of the first pipeline is a spigot end, and the first heat preservation layer at the spigot end of the first pipeline is of an inner conical structure. One end of the second pipeline is a bellmouth end, a second thermal insulation layer of the bellmouth end of the second pipeline is arranged to be of an outer conical structure, and the inner conical structure is matched with the outer conical structure in shape; according to the utility model, the structure of the thermal insulation layer of the socket type thermal insulation pipe is designed and optimized, so that the thermal insulation layer can be tightly overlapped after the socket type thermal insulation pipe is inst