In the general spiral vibrating dryer, the wet material […]
In the general spiral vibrating dryer, the wet material enters the spiral bed from the top feeding port. Under the action of the circumferential exciting force and gravity, the material jumps from top to bottom along the spiral bed until the bottom layer discharges; at the same time, cleansing The hot air enters from the bottom Spiral dryer suppliersof the spiral bed, and after sufficient heat transfer and mass transfer with the materials distributed on the bed, it is discharged from the top drain. Thereby the wet material is dried.
At the bottom feeding, it can be considered that the hot air of the flash dryer enters the stirring and pulverizing drying chamber from the bottom of the dryer at a suitable spraying speed by the inlet pipe, and the material is strongly sheared, blown, and rotated, so that the material is subjected to centrifugation. It is micronized by shearing, collision, and friction to enhance mass transfer heat transfer. At the bottom of the dryer, the larger and drier pellets are mechanically broken by the agitator, the moisture content is lower, and the particles with smaller particle size are entrained by the swirling gas stream and further dried during the ascending process.