Improved heat preservation pipe with built-in filter screen

The utility model provides an improved heat preservation pipe with a built-in filter screen, which comprises a heat preservation pipe body, an operation pipe, a heat insulation cover, a heat insulation layer, an end cover, an input pipe, a heat preservation layer, a protection layer, an impurity filtering filter screen cylinder structure convenient to disassemble, a waterproof identification seat structure convenient to disassemble and a storable auxiliary disassembly rod structure, an operation pipe is integrally connected to an opening in the upper left side of the heat preservation pipe body, a heat insulation cover is connected to the upper portion of the operation pipe through a bolt, a containing groove is formed in the upper middle side in the heat insulation cover, and a heat insulation layer is arranged on the inner side of the containing groove. The left part of the thermal insulation pipe body is in bolted connection with an end cover; a water inlet is formed in the middle in the end cover, and the