Polycrystal mullite fiber thread throwing machine

The utility model relates to the technical field of polycrystalline mullite fiber processing, in particular to a polycrystalline mullite fiber thread throwing machine which comprises a thread throwing machine body, the rear end of the thread throwing machine body is fixedly connected with a liquid storage tank, the inner wall of the thread throwing machine body is rotatably connected with a thread throwing roller, and the inner wall of the thread throwing roller is provided with a cooling groove. According to the device, a first water pump pumps cooled cooling liquid in a cooling tank and conveys the cooling liquid into a circulation pipe through a transfer frame and a backflow pipe, the circulation pipe and a heat dissipation pipe are both made of copper pipes, a fan rotates to generate cold air, and the cold air is sprayed to the circulation pipe, the heat dissipation pipe and heat dissipation fins through a cold air barrel and an air spraying pipe; the cooling fins, the cooling pipes and sprayed cold air i