What is the principle of plastic dehumidifying dryer?

Dehumidification and drying part: the moist and hot air coming back from the drying barrel is cooled and then blown into the honeycomb channel. The moisture in the air is absorbed by the rotating wheel and then desorbed by the regenerated hot air. Two air streams act on the rotating wheel at the same time. With the rotation of the rotating wheel, the moisture in the air is continuously absorbed and desorbed by the regenerated air, forming stable low dew point air, which is heated to the drying temperature of plastics and blown into the drying barrel to form a closed cycle and dry raw materials.

Suction part: Suction is to suck materials from storage barrels or other storage bins into dry barrels. When the magnetic reed switch of the vacuum hopper detects that there is no material, the suction motor operates to generate vacuum in the vacuum hopper, and the raw materials in the storage barrel are sucked into the vacuum hopper due to the pressure difference of air. When the suction time is over, the suction motor stops running, and the raw materials will fall into the dry bucket due to their own weight. The dried raw materials are pumped from the drying barrel into the electric eye hopper installed in the plastic molding machine.