Tunnel Drying Furnace

A Tunnel Drying Furnace is an industrial-scale continuous drying equipment designed for large-volume production. It uses chains, mesh belts, or step-by-step mechanical conveying systems to continuously transport materials into the tunnel chamber.During the conveying process, materials exchange heat with hot air or infrared radiation inside the tunnel, achieving efficient and continuous dehydration and drying.The equipment features continuous operation, precise temperature control, uniform heating, and high production efficiency, making it suitable for various industrial drying applications.

Product Applications

1. Food Industry

Drying of dehydrated vegetables, dried fruits, meat products, puffed foods, and other food materials.

2. Electronics and Semiconductor Industry

Curing of PCB coatings, adhesive dispensing curing of electronic components, and semiconductor drying processes.

3. Pharmaceutical and Chemical Industry

Drying of traditional Chinese medicine slices, pharmaceutical granules, powders, catalysts, and other materials.

4. Hardware Surface Treatment

Drying of surface moisture and curing of coatings after electroplating and spraying processes.

Product Parameters

Product Features

1. High Efficiency and Time Saving

Supports continuous production line operation, significantly improving production efficiency.

2. Precise Temperature Control

Adopts segmented independent temperature control, allowing different temperature zones to be adjusted according to process requirements.

3. Uniform Heating Performance

Equipped with a hot air circulation system to ensure even heat distribution and consistent drying quality.

4. Energy Saving and Environmental Protection

Uses a high-density insulation layer to effectively reduce heat loss and improve energy efficiency.

FAQ 

Q1: Can the temperature of a tunnel drying furnace be controlled in different sections?

A: Yes. The furnace is usually divided into multiple sections, such as the preheating zone, constant temperature zone, and cooling zone. Each section can be independently set and controlled according to the drying process requirements.

Q2: How should the heating method (electricity, gas, or steam) be selected according to the material?

A:Electric heating provides the highest temperature control accuracy and a clean operating environment.

Natural gas heating offers lower operating costs.

If the factory already has sufficient steam supply, steam heating is usually the most economical option.

Q3: What is the difference between mesh belt and chain conveyor systems?

A:The mesh belt conveyor is suitable for drying bulk materials, granular materials, and small-sized products.

The chain conveyor or tray conveyor is suitable for transporting heavier materials, larger workpieces, and regularly shaped products.

Q4: How does the equipment ensure uniform drying of materials?

A:The equipment is designed with a powerful hot air circulation duct system, which creates a uniform airflow field inside the tunnel to ensure consistent heating on all surfaces of the materials.

Q5: Does the tunnel drying furnace consume a lot of energy? What energy-saving measures are available?

A:The equipment features high efficiency in continuous operation, and its energy consumption per unit output is lower than that of individual drying ovens. It adopts microcomputer PID power regulation technology and an extra-thick insulation layer to reduce heat loss and improve energy efficiency.