What is the difference between a box dryer and a drum dryer

Box type drying room and drum dryer are two different types of drying equipment, which have significant differences in structure, working principle, scope of application, and advantages and disadvantages. The following is a detailed comparison of these two types of drying equipment:

Structural differences

• Box type drying room
• Usually has a closed drying chamber equipped with a hot air circulation system inside.
• There is a drying rack in the drying room for placing items to be dried.
• The overall structure of the equipment is simple and occupies a relatively small area.
• rattler-drying machinery
• It is mainly composed of rotating body (drum), lifting plate, transmission device, support device, and sealing ring and other components.
• The drum is equipped with a scraper inside, which is used to scatter materials and increase their contact area with the hot air flow.
• The overall structure of the equipment is relatively complex and occupies a large area.

Working principle

• Box type drying room
• Use efficient gas or electric heaters to generate hot air.
• The hot air is uniformly heated to the set temperature through the circulation system and blown into the drying chamber.
• The items to be dried are subjected to hot air blowing on the drying rack, thereby achieving fast and uniform drying.
• rattler-drying machinery
• The hot air flows together with the material into the interior of the drum.
• As the drum rotates, the material is continuously scattered under the action of the plate and fully contacts with the hot air flow.
• After the material completes the drying process in the drum, it is collected from the lower part of the bottom.

scope of application

• Box type drying room
• Suitable for drying small items such as traditional Chinese medicine, dried fruits and vegetables, seafood, etc.
• It is also applicable to temperature sensitive materials, such as certain fine chemicals.
• rattler-drying machinery
• Widely used in the fields of building materials, metallurgy, chemical industry, cement industry, etc., for drying materials such as slag, limestone, coal powder, etc.
• It is also suitable for the production of compound fertilizers, food processing, and other scenarios that require drying a large amount of materials.

advantages and disadvantages

• Box type drying room
• Advantages: simple structure, easy operation, small footprint, high and uniform drying efficiency, energy-saving and environmentally friendly.
• Disadvantage: It may not be suitable for large or heavy materials.
• rattler-drying machinery
• Advantages: High processing capacity, low fuel consumption, low drying cost, high temperature resistance, strong scalability, and strong overload resistance.
• Disadvantages: Large footprint, relatively high price, limited adaptability to materials (such as some viscous materials that may not be easy to dry).

In summary, there are significant differences between box drying rooms and drum drying machines in terms of structure, working principle, scope of application, and advantages and disadvantages. The choice of drying equipment depends on specific drying needs, material characteristics, and economic considerations.