Rapid heating device of film coating tank

The utility model relates to the technical field of coating devices, in particular to a rapid heating device of a coating tank, which comprises a coating tank and a coating tank, an annular steam round tube is mounted in the coating tank, steam insertion tubes are symmetrically connected to two sides of the steam round tube, a steam insertion tube support is mounted at the joint of each steam insertion tube and the steam round tube, and a steam insertion tube support is mounted at the joint of each steam insertion tube and the steam round tube. A self-control adjusting valve is installed at the end, away from the steam insertion pipe support, of the steam insertion pipe. Steam is in direct contact with enveloping slurry for heat transfer, a circular tube porous technology is adopted in the lower middle part, the steam and the slurry are in complete contact at the same latitude, the circular tube is arranged at the lower middle part, and the steam flows up and down at the same time, so that the temperature ris