Automatic Microwave Drying Roasting Ripening Machine for Millet Maize Coarse Cereals Grain

The grain microwave drying machine is a device that integrates microwave heating and drying functions. It is specially designed for the ripening, sterilization, and drying of grains (such as rice, wheat, corn, oats, beans, etc.). Its core advantages lie in high efficiency and energy saving, low temperature processing, and quality assurance. It is suitable for food processing, deep processing of agricultural products, and production of healthy foods.

Technical principles and process flow

1. Microwave heating mechanism

Selective heating: Microwaves directly act on polar molecules (such as water and sugar) in grains, causing them to vibrate at high frequencies to generate heat, achieving internal-external synchronous heating with a thermal efficiency of up to 80%-90% (traditional heat conduction is only 30%-50%).

Penetrating heating: Microwaves can penetrate the interior of grains (penetration depth is about 3-10cm, depending on the type of grain and water content), avoiding the problem of "burning outside and growing inside" in traditional heating methods.

2. Process flow

Pretreatment: cleaning, screening, impurity removal, control of initial moisture content (generally 15%-25%).

Microwave cooking: microwave heating to gelatinize starch and denature protein inside the grain to achieve the cooking effect (temperature about 80-120℃, time 3-10 minutes, adjusted according to the type of grain).Vacuum/hot air drying: combined with vacuum environment (lowering the boiling point to below 60℃) or hot air circulation, quickly remove moisture to safe storage standards (moisture content ≤12%).

Cooling and packaging: After natural cooling or air cooling, seal the packaging to prevent moisture absorption.

Parameters

Feature
1. The drying speed is fast, the aroma of the product is strong, uniform, and the color is bright.

2. The direction of water vapor for drying and dehydration is from inside to outside, so the mealworm microwave drying machine has a puffing effect, which helps the subsequent crushing.

3. Low-carbon environmental protection equipment, environmental protection, energy saving and high efficiency.

4. Conducive to manipulation, excellent processing technology.

5. Mealworm microwave drying sterilizing machine occupies a small area, energy saving and environmental protection.