 |
The drying process can be optimized by adjusting the material layer thickness, main shaft speed, number of rake arms, and the type and size of rake blades.
Each drying disc layer can be individually heated or cooled by introducing hot or cold media, allowing precise and easy control of material temperature.
The material retention time is adjustable.
The material flow is unidirectional with no back-mixing, ensuring uniform drying, stable quality, and eliminating the need for remixing.
Starting and stopping the dryer is very simple.
After stopping the feed, the conveying rakes quickly clear the material inside the dryer.
Equipped with large inspection doors with viewing windows for thorough cleaning and inspection of the equipment interior.
Thin material layers and low main shaft speed reduce the power required for the material conveying system, resulting in low electricity consumption.
Drying is done by conduction heat, offering high thermal efficiency and low energy consumption.
Wet material is continuously fed from the feeder onto the upper first drying disc of the dryer. The rake arms equipped with blades perform a rotary motion to continuously turn over the material. The material flows along an exponential spiral on the drying disc surface. On the smaller drying discs, the material is moved to the outer edge and then falls onto the outer edge of the larger drying disc below. On the larger drying disc, the material moves inward and falls through the central discharge outlet onto the next smaller drying disc below. The large and small drying discs are alternately arranged vertically, allowing the material to continuously flow through the entire dryer.
Heating medium flows inside the hollow drying discs; this medium can be saturated steam, hot water, or thermal oil. The heating medium enters from one end of the drying discs and exits from the other. The dried material falls from the last drying disc to the bottom of the shell, where it is conveyed by the rake blades to the discharge outlet. Moisture evaporated from the material is discharged through the vent on the top cover. For vacuum-type disc dryers, the moisture is extracted via a vacuum pump port on the top cover.
The dried material discharged from the bottom can be packaged directly. By equipping auxiliary devices such as finned heaters, solvent recovery condensers, bag-type dust collectors, dried material remixing devices, and induced draft fans, the drying capacity can be improved. This dryer is suitable for drying pasty and heat-sensitive materials, allows convenient solvent recovery, and can also perform pyrolysis and reaction processes.
