Large Hot Air Circulation Tunnel Oven Drying Line

The Large Hot Air Circulation Tunnel Oven Drying Line is an industrial-grade continuous drying system designed for large-scale production. It adopts a tunnel structure combined with a high-precision conveying system, allowing materials to be heated evenly while moving through the drying chamber.By utilizing high-efficiency fans for forced hot air circulation, the equipment enables rapid evaporation of moisture or solvents. It is widely used as a core thermal processing unit in large-scale industrial production lines.

Applications

Electronics and Electrical Industries

PCB board drying and transformer curing.

Chip baking and drying after dispensing processes.

Hardware and Plastic Products

Surface coating drying.

Screen printing ink drying.

Moisture removal and dehydration treatment.

New Energy Lithium Battery Industry

Electrode sheet drying.

Battery material moisture removal.

Food Processing Industry

Dehydration of vegetables.

Baking food products.

Drying of medicinal herbs.

Automotive Components

Brake pad curing.

Drying of various surface coatings.

Technical Parameters

Product Features

High Efficiency and Energy Saving

The hot air is internally circulated and reused, significantly reducing heat loss and improving thermal efficiency.

Precise Temperature Control

The system adopts microcomputer PID control technology combined with SSR solid-state relay control, ensuring stable and accurate temperature regulation.

Uniform Heating Performance

A specially designed air circulation system provides multi-point convection airflow, ensuring uniform heat distribution throughout the drying chamber.

High Intelligent Automation

Equipped with a PLC touchscreen control system, supporting data export and MES system integration for intelligent production management.

Comprehensive Safety Protection

Features over-temperature alarm, exhaust explosion-proof protection, and conveyor anti-jamming protection to ensure safe operation.

FAQ

Q1: How does the tunnel oven ensure temperature uniformity in different sections?

A:The equipment adopts independent multi-zone temperature control technology. Each heating zone is equipped with independent heating elements, circulation fans, and temperature sensors. Combined with a specially designed airflow circulation system, it ensures that materials receive consistent heating throughout the entire tunnel.

Q2: What types of conveying systems are available for this drying line?

A:The equipment supports various conveying methods, including stainless steel mesh belts, Teflon mesh belts, PVC belts, chains, rollers, and overhead conveyors. The appropriate conveying system will be selected according to the material weight, shape, and required processing temperature.

Q3: How can the energy consumption of the equipment be optimized?

A:The outer structure uses high-density aluminum silicate fiber insulation with a thickness of 100-150mm, effectively reducing heat loss. Meanwhile, most of the hot air is recycled internally, with only a small amount of exhaust discharged. Compared with traditional ovens, the system can reduce energy consumption by more than 30%.

Q4: What happens if an over-temperature abnormality occurs during operation?

A:The system is equipped with dual over-temperature protection. When the temperature exceeds the preset safety limit, the equipment automatically cuts off the heating power, activates audible and visual alarms, and starts forced exhaust cooling to protect operators and materials.

Q5: What maintenance is required for daily operation?

A:Regular maintenance includes cleaning condensed materials and carbon deposits inside exhaust ducts, checking conveyor chain lubrication every shift, and cleaning circulation fan air filters monthly to ensure stable airflow performance.