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Working principle of flash dryer


Release time:

2024-02-29

The hot air is cut into the bottom of the dryer and driven by the agitator to form a strong rotating wind field. The paste material enters the dryer by the screw feeder. Under the strong action of the high-speed rotating stirring paddle, the material is dispersed under the action of impact, friction and shear force. The massive material is rapidly crushed, fully contacted with hot air, heated and dried. The dry material after dehydration rises with the hot air flow, the big particles are trapped by the classification ring, and the small particles are discharged out of the dryer from the center of the ring and recovered by the cyclone separator and the dust collector. The undried or large materials are thrown to the wall by the centrifugal force and fall to the bottom again to be crushed and dried.

The hot air is cut into the bottom of the dryer and driven by the agitator to form a strong rotating wind field. The paste material enters the dryer by the screw feeder. Under the strong action of the high-speed rotating stirring paddle, the material is dispersed under the action of impact, friction and shear force. The massive material is rapidly crushed, fully contacted with hot air, heated and dried. The dry material after dehydration rises with the hot air flow, the classification ring intercepts the large particles, and the small particles are discharged from the center of the ring out of the dryer and recovered by the cyclone separator and dust collector. The undried or large materials are thrown to the wall by centrifugal force and fall to the bottom again to be crushed and dried.

In order to continuously, uniformly and quantitatively convey the materials to be dried into the drying host for drying operation, a broken arch stirring device is set up in the wet hopper near the spiral, with the same speed and spiral rotation speed. At the same time, in view of the viscous characteristics of the battery material cake, the conveying spiral is designed as a double spiral structure, and the spiral pieces are staggered with each other. And cut into each other. In this way, it is easy to destroy the phenomenon of "holding the shaft" of viscous materials. The double helix has a self-cleaning function and uses a frequency converter to adjust the speed.