Polyphenyl insulation board circulation energy saving drying room

The utility model belongs to the field of modified polyphenyl insulation board driving equipment, particularly discloses a polyphenyl insulation board circulation energy saving drying room and solves the problems of lower drying efficiency and waste of heat as hot air in the existing drying room is directly discharged out of the drying room. The polyphenyl insulation board circulation energy saving drying room comprises a drying room body, an indoor fan and an outdoor fan; heating tubes are arranged at the bottom of the drying room; certain ends of the heating tubes extend into the drying room body along the bottoms of the side walls of the drying room body; the heating tubes in the drying room body are communicated with multiple cooling pipes side by side; the other ends of the heating tubes are communicated with an air outlet of the outdoor fan; an air inlet of the outdoor fan is communicated with the inner cavity of a combustion chamber by a pipeline; the indoor fan is arranged at the top of the drying room body; an air inlet of the indoor fan is communicated with a venting pipe provided with multiple air vents side by side; an air outlet of the indoor fan is communicated with a hot air box by a connection pipeline; the hot air box and an air inlet of the combustion chamber are communicated for providing air for the combustion chamber.