The dual-mass vibrating fluidized bed dryer represents the next generation of large-scale drying technology, offering superior efficiency, energy savings, and high-performance capabilities. This advanced system is especially effective for drying materials that are challenging for conventional dryers, making it a versatile choice across multiple industries such as petrochemicals, fine chemicals, pharmaceuticals, food processing, grain and oil, feed production, salt processing, seafood treatment, and ultra-fine drying applications.
The machine consists of an upper chamber, a bellows, a base, and a fluidized bed. The upper chamber and bellows form the upper structure, while the lower body includes the base. These two parts are connected using plate springs and spiral springs, ensuring smooth vibration transmission. The lower body is isolated from the foundation by rubber buffers, reducing mechanical stress and noise. At the rear of the bellows, a box-type exciter is installed to generate the necessary vibration force.
This excitation mechanism is driven by a motor through a transmission shaft, producing both horizontal and vertical forces. The leaf spring (resonance spring) amplifies these forces, allowing the material on the nozzle plate to be lifted by hot air and achieve a fluidized state. The horizontal component moves the material forward along the bed, eventually discharging it through an overflow weir and hopper, completing the drying process efficiently.
By placing the excitation source at the front of the equipment, the overall stress distribution is improved. This design allows the dual-mass system to replace multiple traditional vibratory beds in series, significantly reducing capital investment and construction costs. The advanced vibration structure ensures synchronized movement across the entire length and width of the bed, eliminating issues like uneven current flow and channeling that commonly occur in standard dual-motor systems.
With increased length and surface area, the residence time of the material is extended, which is ideal for deep drying of larger particles. The combination of vibration and reduced fluidization velocity also helps minimize wear and maintain particle stability during the process.
High-frequency vibrations ensure more uniform hot air distribution, enhancing heat transfer efficiency between the air and the wet material. Additionally, this vibration prevents localized dead zones, wall buildup, or channeling, which can cause instability in traditional fluidized beds. This makes the system suitable for drying viscous polymers and organic materials.
A duckbill-shaped cover over the distribution board generates horizontal airflow, reducing product contact with the dryer floor and preventing overheating. It also applies high-speed shear to larger particles, ensuring even fluidization. When the dryer is turned off, the cover prevents products from falling into the pressure equalizing bellows. The material level can be adjusted via the overflow weir to maintain consistent conditions during operation. Observation windows on both sides of the fluidized chamber allow operators to monitor the drying process in real-time.
**Application Areas:**
MBS, ABS, adipic acid, polyacrylamide, acrylamide crystals, polytetrafluoroethylene, phenolic resin, nylon, polypropylene resin, polyester chips, polyvinyl chloride, soda ash, salt, ammonium nitrate, potassium carbonate, potassium chlorate, potassium chloride, potassium nitrate, potassium phosphate, potassium sulfate, fermented feed, extruded granule feed, organic fertilizer, alcohol waste, antibiotic residue, and more.
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SHENZHEN SENING PACKING MATERIAL CO.,LTD , https://www.seningpacking.com