Features of plastic hopper dryer:
1. Various feeding devices for selection; Continuous and stable feeding; No bridging will occur during the process.
2. A special cooling device is arranged at the lower part of the dryer; The deterioration phenomenon of the material in the lower high-temperature region is avoided.
3. Special air pressure sealing device and bearing cooling device; Effectively extend the service life of the transmission part.
4. Special air distribution device; Reduced equipment resistance; And effectively provides the processing air volume of the dryer.
5. The drying chamber is equipped with a grading ring and a swirl plate; The fineness and final water content of the material are adjustable.
6. Compared to other drying methods; It can effectively increase the specific gravity of materials.
7. High circumferential gas velocity in the drying chamber; Short material retention time; Effectively prevent materials from adhering to the wall and heat sensitive materials from deteriorating; Achieve efficient, rapid, small equipment, large-scale production.
Principle of plastic hopper dryer:
Hot air enters the mixing and crushing drying chamber from the bottom of the dryer through a population tube at a suitable spouting speed; Strong shearing, blowing, and rotating effects on materials; The material is micronized due to centrifugation, shearing, collision, and friction; Enhanced mass and heat transfer. At the lower part of the dryer; Larger and wetter particles are mechanically crushed by the action of an agitator; Particles with low moisture content and small particle size are entrained and lifted by a rotating airflow, and are further dried during the rising process. Due to the rotating flow of the gas solid two phases; The inertia of the solid phase is greater than that of the gas phase; The relative velocity between the solid and gas phases is relatively large; Strengthen the mass and heat transfer between the two phases, so the production intensity of this machine is high.