Cooling and dehumidifying mechanism for air compression device

The utility model relates to the technical field of air compression equipment, and particularly discloses a cooling and dehumidifying mechanism for an air compression device, the cooling and dehumidifying mechanism comprises a dehumidifying structure and a cooling structure, the dehumidifying structure is detachably connected to an air inlet valve of a piston cylinder of an air compressor, the dehumidifying structure comprises a shell and a drying section arranged in the shell, and the drying section is detachably connected with the shell; the cooling structure comprises an annular water cooling plate arranged outside the piston cylinder in a sleeving mode, a gap between the water cooling plate and the piston cylinder forms a water cooling cavity, a cooling water pipe is arranged in the water cooling cavity, and a water inlet pipe and a water outlet pipe of the cooling water pipe extend out of the water cooling plate. The air compressor aims to solve the problems that an existing air compressor is provided wi