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Vibration fluidized bed dryer principle Vibration fluidized bed dryer is the vibration force generated by the vibration motor to make the machine vibrate, the material jumps forward under the action of the excitation force in a given direction, and the vibrating fluidized bed is dried at the bottom of the machine. The hot air keeps the material in a fluidized state, and the material particles are in full contact with the hot air to achieve the desired drying effect. The material enters from the mouth of the vibrating fluidized bed dryer. The material on the vibrating bed of the vibrating fluidized bed dryer is in orthogonal contact with the hot air passing through the lower part of the vibrating trough. The humid air is led out by the induced air, and the dry material is discharged from the discharge port. discharge.
Vibration fluidized bed dryer vibration fluidized bed dryer is widely used in the drying, cooling, and powdering of granular and granular materials in industries such as chemical industry, light industry, medicine, food, plastics, grain and oil, slag, salt, and tobacco. Humidification and other operations, but also for dry cooling, cooling and humidification operations.
The characteristics of the vibrating fluidized bed dryer are as follows:
1. Vibrating fluidized bed dryer is driven by vibration motor, which has stable operation, low noise, long service life and convenient maintenance.
2, the material surface damage is small, can be used for the drying of fragile materials, material particles can also be used when irregular, does not affect the effect.
3. The thickness of the material layer and the moving speed and amplitude of the machine can be adjusted steplessly. The adjustability is good and the speed is wide.
4. The vibrating fluidized bed dryer adopts a fully enclosed structure, which effectively prevents cross-contamination of materials from the outside, cleans the environment and improves working conditions.
5. The vibration of the vibrating fluidized bed dryer makes the material easy to reach the fluidized state and increases the effective heat transfer coefficient, so the thermal efficiency is high. The bed temperature distribution is uniform and there is no local overheating. Uniform fluidization, no dead angles and blow through. Vibration plays a role in transportation and is also conducive to energy conservation. It can save 30-60% energy compared to general drying equipment.
6. The vibration promotes fluidization, which reduces the air demand and reduces the entrainment rate of the particles.
Development of vibrating fluidized bed dryer and its application. Development of vibrating fluidized bed dryer. When the granular material is dried in a common fluidized bed dryer, the material particles should be uniform and have certain specifications, otherwise the groove flow will be formed. In the stagnation zone, when the particle size distribution is wide, the entrainment is severe, the agglomeration is easy to agglomerate, and due to the particle backmixing, the particle residence time distribution range is large, and the particle moisture content is uneven, thus limiting the ordinary fluidized bed dryer. Use range. In order to overcome its shortcomings, a lot of research has been done abroad to improve the performance of fluidized bed dryers. Especially in today's energy shortage, the mass transfer heat transfer process is strengthened, energy conservation and quality are improved, and the fluidized bed dryer has wide adaptability and economic rationality. The vibrating fluidized bed dryer has great significance. The vibrating fluidized bed dryer has the advantages of advanced design, reliable quality, wide application range, remarkable energy conservation and the ability to dry materials that are difficult to dry on other dryers. Therefore, the vibrating fluidized bed dryer is widely welcomed by various industries.