On September 6, 2026, Guoxin Group completed the installation, testing, and operational handover of an industrial multi-layer continuous mesh-belt chili drying facility in Liupanshui, Guizhou Province. Engineered specifically to tackle the high-humidity mountainous climate of Southwest China during peak harvest season, this automated drying line delivers continuous, uniform dehydration while locking in natural crimson color and pungency.

1. Project Specifications Matrix

2. Technical &  Solutions

• Overcoming High Regional Humidity: Southwest China’s humid, rainy autumn climate makes traditional open-air sun drying virtually impossible without massive crop spoilage. The enclosed, insulated Guoxin drying chamber utilizes a dynamic multi-stage exhaust system that actively extracts internal moisture independently of external weather conditions.

• Preventing Color Degradation & Scorching: Excessive heat destroys natural carotenoid pigments, turning red chilis dark brown or black and degrading capsaicin levels. Precision multi-zone temperature controls (50℃-65℃) ensure steady moisture evaporation while protecting natural brilliance and flavor.

• Uniform Bulk Permeability: Thick, fleshy chilis easily form dense, airflow-blocking piles. The multi-tiered continuous belt design gently inverts and tumbles the pods during tier-to-tier drops, ensuring 360-degree hot-air penetration across every square centimeter.

3. End-to-End Processing Flow

1. Intake & Automated Elevation: Harvested fresh red chilis are loaded into the ground-level hopper and lifted smoothly via an inclined cleated belt into the drying enclosure.

2. Uniform Spreading: An oscillating mechanical spreader levels the chilis into an even bed depth across the stainless steel mesh belt, guaranteeing optimal airflow dynamics.

3. Multi-Zone Convective Drying: Material travels continuously through insulated heating zones. Forced hot air circulates through the mesh openings, systematically removing core and surface moisture as chilis cascade between tiers.

4. Continuous Output: Fully dehydrated red chilis exit smoothly via the discharge conveyor, exhibiting uniform dryness, unbroken skins, and vibrant natural color.

FAQ

Q1: How does the continuous mesh-belt dryer handle high ambient humidity in mountainous regions like Guizhou?

A: The system operates as a closed-loop insulated thermal tunnel equipped with automated humidity-sensing exhaust blowers. It continuously evacuates saturated air without letting external damp weather interfere with internal drying efficiency.

Q2: Does continuous mesh-belt conveying damage or fracture dried chili pods?

A: No. The horizontal transport speed and drop distance between belt tiers are engineered to provide gentle rolling action, keeping the dried pods fully intact without skin cracking or stem separation.

Q3: What heat sources can be paired with this chili drying line?

A: Guoxin continuous dryers integrate flexibly with Air-Source Heat Pumps (maximum electrical efficiency), Natural Gas Burners, Steam Exchangers, or Biomass Furnaces, depending on local utility availability.