The double-mass vibrating fluidized bed dryer consists of an upper chamber, a bellows, a base, and a fluidized bed. The upper chamber and the bellows constitute the upper body, and the lower body is the lower body. The upper and lower bodies are connected by plate springs and spiral springs, and the lower body and the foundation are isolated from each other by rubber buffers. The bellows is equipped with a box type excitation at the rear. Vibration device.
The box exciter is connected by a transmission shaft and is dragged by a motor to generate a horizontal excitation force, which is generated by a leaf spring (resonance spring) to generate a vertical component and a horizontal component, vertically. The component force throws up the material on the nozzle plate together with the hot air passing through the nozzle plate to make the material in a fluidized state, and the horizontal component force causes the material to be conveyed forward at a certain speed and is discharged through the overflow weir and the hopper, To complete the drying operation.
The excitation source is installed at the head of the equipment, which improves the stress condition of the entire equipment and realizes the use of a dual-mass vibrating fluidized bed dryer instead of several common vibration beds in series, which reduces equipment investment and engineering. The construction cost and the advanced vibration structure ensure the synchronous vibration in the width and length direction of the large-scale vibration bed, which solves the problems of bias current and channel flow in the ordinary dual-motor vibration bed.
Due to the increase of the length and the increase of the area, the residence time of the material is greatly prolonged, which is beneficial to the deep drying of the large particle materials. At the same time, the application of the vibration and the decrease of the fluidization velocity are favorable for reducing the wear and keeping the stability of the particles.
The high-frequency vibration makes the distribution of hot air more uniform and improves the heat transfer efficiency of hot air and wet materials. At the same time, the high-frequency vibration keeps the underlying material in the process of slowly running out of the material, avoiding the problem of local dead-bed, wall-stacking, channeling, and swell of the stationary fluidized bed, which can cause vibrations of the dual-body. Fluidized bed dryers can be applied to viscous polymers, viscous organics, and dried.
The distribution board is covered with a similar duckbill hood, which can generate horizontal airflow, reduce the contact between the product and the dryer floor and overheating, while having a high-speed shear effect on large particles, ensuring that the material is fluidized evenly. When the dryer is stopped, it prevents the products staying in the fluidized chamber from falling into the pressure equalizing bellows. The level in the dryer can be adjusted by the overflow weir so that the material level during the drying process remains unchanged. The observation window is located on both sides of the fluidization chamber to facilitate observation of the fluidized state in the chamber.
Application area:
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, chlorine Potassium, Potassium Nitrate, Potassium Phosphate, Potassium Sulfate, Fermented Feed, Extruded Granule Feed, Organic Fertilizer, Alcohol Waste, Antibiotic Residue, Waste, etc.
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