On September 3, 2026, Guoxin Group completed the installation, testing, and operational commissioning of an industrial multi-layer continuous mesh-belt chili drying facility in Shaoguan, Guangdong Province. Designed to handle fresh red chilis in the humid climate of Southern China, the line provides continuous, automated dehydration while locking in natural crimson color and market-grade flavor.

1. Project Specifications Matrix

2. Engineering Challenges & Technical Solutions

• High Ambient Humidity Management: Guangdong’s humid subtropical climate makes open-air sun drying impossible during harvest seasons. The enclosed, multi-zone convective drying chamber maintains precise relative humidity extraction regardless of external weather conditions.
• Color & Oleoresin Retention: High drying temperatures cause thermal browning and degradation of capsaicin and natural pigments. Multi-stage temperature control (50℃-65℃) preserves natural red luster and pungency.
• Uniform Bulk Handling: Automated spreading across the belt prevents clumping, while gentle drops between multi-tiered belts turn the chilis automatically to ensure 360° hot-air penetration.

3. End-to-End Processing Flow

1. Automated Infeed: Raw red chilis are loaded into the receiving hopper. An inclined conveyor equipped with an oscillating spreader levels the product bed evenly across the mesh belt.
2. Multi-Zone Convective Drying: Materials travel continuously through insulated heating zones. Controlled hot air penetrates the bed from top and bottom as chilis cascade between belt tiers.
3. Continuous Output: Uniformly dried red chilis exit via a cleated discharge conveyor directly into collection containers without pod breakage or scorched skins.

FAQ

Q1: How does the Shaoguan installation overcome high outdoor humidity in Southern China?

A: The system utilizes a closed, insulated drying tunnel paired with multi-stage exhaust fans. Relative humidity sensors inside the chamber automatically cycle the exhaust vents to pull moisture out rapidly without being affected by high outdoor humidity.

Q2: What heating sources can power this continuous chili dryer?

A: Depending on factory energy access, Guoxin continuous mesh-belt dryers accept Air-Source Heat Pumps (maximum electrical energy savings), Natural Gas Burners, Steam Heat Exchangers, or Clean Biomass Furnaces. Indirect heat exchangers ensure zero combustion soot contacts the product.

Q3: How does the system prevent pod breakage during continuous operation?

A: Horizontal mesh-belt conveyance eliminates physical pressure on the chilis. The drop distance between belt tiers is calculated to gently flip the material without crushing or fracturing the outer skin.