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(1) Single stage belt dryer: The dried material is evenly distributed onto the conveyor belt through the feeding device at the feeding end. Conveyor belts are usually made of perforated stainless steel sheets, driven by motors through gearboxes, and can be adjusted in speed. The interior of the drying machine is usually divided into several units for independent control of operating parameters and optimization of operations. There is an isolation section between the drying sections, where there is no circulation of drying medium.

(2) Multi stage belt dryer: Multi stage belt dryer is essentially composed of several single-stage belt dryers connected in series, and its operating principle is the same as that of single-stage belt dryers.

(3) Multi layer belt dryer: Multi layer belt dryer is commonly used in situations where the drying speed requirements are low, the drying time is long, and the process operating conditions can be maintained constant throughout the entire drying process. Set up partitions between layers to organize the directional flow of drying medium, ensuring uniform drying of materials. Multi layer belt dryer takes up less space, has a simple structure, and is widely used for drying grain materials. However, due to the need for multiple loading and unloading during operation, it is not suitable for dry and easily adhesive conveyor belts and materials that are not allowed to break.

(4) Impact belt dryer: The impact belt dryer is suitable for drying surface coatings of fabrics, tobacco leaves, substrates, and other thin sheet materials. The impact belt conveyor usually consists of two conveyor belts. The impact belt conveyor can be divided into unit segments for independent control. After the drying medium is humidified, some of it is discharged, while the other part is returned and mixed with fresh drying medium before circulating.