Solar energy heat accumulating type circulating drying system

The utility model provides a solar energy heat accumulating type circulating drying system. The system mainly consists of a solar energy air heat collector (2), an energy storing and heat accumulating device (5), a drying box (11), a negative pressure fan (16) and a dehumidifier (19). The energy storing and heat accumulating device is additionally arranged in the system, so that the stabilization of the drying temperature is ensured, and the drying can be continuously performed. The fan is mounted at the outlet of the drying box, and exhausts air from the inside to the outside, negative pressure is generated in the drying box, and the drying capacity is improved. After the dried humid air is dehumidified by the dehumidifier, the air is sent to the heat collector or the energy storing and heat accumulating device to be heated, the sealed circulating drying system is formed, so that the residual heat in dried tail gas is effectively recycled, the energy is saved, and the air pollution caused by exhaust gas emis