Internal pressure adjusting device for thermal insulation door of drying machine

The utility model discloses a dryer thermal insulation door internal pressure adjusting device which comprises a thermal insulation door, vertical rods are fixedly connected to the middle surfaces of the two ends of the front end of the thermal insulation door, transverse rods are fixedly connected to the middle surfaces of the two sides of the front end of the thermal insulation door, and a door frame is fixedly connected to the surface of the outer wall of the thermal insulation door. A second welding hole is formed in the top of the right side of the front end of the heat preservation door in a penetrating mode, and a first welding hole is formed in the right side of the second welding hole in a penetrating mode. In the utility model, the internal and external pressure balance of the heat preservation door is realized through the degreasing cotton, the dehumidification bottle, the drying agent and the air leakage end cover; by means of the device, it is guaranteed that the internal pressure and the externa