Heating assembly of nanotube heating system

The utility model relates to a heating assembly of a nanotube heating system, which comprises a quartz tube body and a turnup constructed at the end part of the quartz tube body, and further comprises a flange ring matched with the turnup and a pressing block arranged on the flange ring in a sliding manner, and a first inclined surface is constructed on the pressing block; the driving assembly is arranged on the flange ring and used for driving the pressing block to slide. According to the flange structure, the pressing block is arranged on the flange ring and can directly replace a traditional bolt to act, when the driving assembly works, the pressing block moves to press another flange plate to be connected through the first inclined face, and therefore the connecting effect of the flange structure is achieved; compared with an existing flange connection mode, the connection speed is higher, the whole nanotube is more convenient to disassemble and assemble in a pipeline, and later maintenance of the nanotub