Energy-saving and environment-friendly hot melting furnace

The invention provides an energy-saving and environment-friendly hot melting furnace. The energy-saving and environment-friendly hot melting furnace comprises a preheating box, a hot melting box, a water tank, an air heating box, a heat conduction barrel, a first damping spiral heat conduction pipe, an exhaust pipe, a preheating pipe, a U-shaped heat exchange pipe, a metal heat conduction rod, a second damping spiral heat conduction pipe, a tail gas filter, an air blower, an electric heating pipe and an electric control valve. Most of heat is absorbed by the heat conduction cylinder after hot air supplied by the air heating box passes through the annular cavity to heat the interior of the hot melting box, the flow speed of the hot air in the annular cavity is reduced through the design of the first damping spiral heat conduction pipe, and the heat absorption efficiency of the heat conduction cylinder is improved; hot air exhausted from the interior of an annular cavity and tail gas generated by hot melting in