Hot melting device

A hot melting device comprises a hot melting tank, a stirrer, a steam pipe and an auxiliary pipe, the stirrer comprises a stirring shaft and stirring blades, one end of the stirring shaft is in driving connection with the outside, the other end of the stirring shaft is provided with the stirring blades, and the end, connected with the stirring blades, of the stirring shaft is located in the hot melting tank; the steam pipe is located in the hot melting tank, and steam nozzles facing the radial direction are distributed in the axial direction of the steam pipe. The auxiliary pipe is connected with the steam nozzle and extends towards the stirring blades; a first material hole is formed in the side wall of the end, close to the steam nozzle, of the auxiliary pipe. Due to the first material holes of the auxiliary pipe, flowing of slurry near the first material holes is promoted, heat exchange efficiency is improved, and impact of steam on the stirring blades is reduced. And the steam slurry mixture is more dispe