Compressed air freezing type drying machine

The utility model relates to the technical field of drying machines, in particular to a compressed air freezing type drying machine which has a good moisture removal effect, prevents equipment from generating peculiar smell due to excessive moisture and improves practicability. The drying device comprises a box body, a drying device, a cavity, an air inlet pipe, an air outlet pipe, a connecting shell, a sliding rail, a sliding block, a dehumidifying bag, a blocking cover, a buckle, a limiting plate, a mounting block and a fixing bolt, and the bottom end of the box body is provided with a mounting through hole; a rectangular hole is formed in the front end of the cavity, the two sliding rails are installed at the left end and the right end in the cavity respectively, the sliding blocks areinstalled in the cavity, sliding grooves are formed in the left end and the right end of each sliding block respectively and slidably connected with the two sliding rails, grooves are formed in the sliding blocks and provided