R&D Microwave Dryer | Lab-Scale Fast Drying – Active Compound Retention | T&T MACHINERY

R&D Microwave dryer SVS-3, manufactured by T&T MACHINERY, utilizes high-frequency electromagnetic waves (typically 2450 MHz) to dry herbal extracts with 25% concentration or liquid extracts with a density of 1.3 into dry extract powder with 5% moisture content in R&D scale. 

🔍 Introduction: Microwave Dryer

The microwave dryer is a modern piece of equipment that is increasingly used in traditional herbal medicine (Eastern medicine) production lines, thanks to its many advantages over conventional drying methods.

⚙️ Main Components

• Drying chamber (Microwave chamber): The area where materials are placed for drying. It is tightly sealed to prevent microwave leakage.

• Microwave generator (Magnetron): Produces microwave radiation—typically at 2450 MHz—to heat the material.

• Waveguide: Channels microwave energy from the magnetron into the drying chamber.

• Conveyor belt (if applicable): Transports materials through the drying zone in continuous drying systems.

• Electronic control system: Adjusts microwave power, temperature, drying time, and conveyor speed.

• Moisture extraction and exhaust system: Removes moisture vapor during drying to prevent condensation and improve efficiency.

• Cooling or ventilation fan: Maintains stable temperature and prevents overheating.

• Insulated and shielded casing: Ensures operator safety and retains heat inside the chamber.

• Temperature and humidity sensors: Monitor and automatically adjust parameters to ensure optimal drying conditions.

• Loading and unloading doors: Allow manual or automatic material input and output.

🌀 Working Principle

1. Raw materials are loaded into the drying chamber (manually or via conveyor).

2. The magnetron emits microwave radiation, which travels through the waveguide and enters the chamber.

3. Microwaves cause water molecules inside the materials to vibrate rapidly → generating internal heat → evaporating moisture from the inside out.

4. The exhaust system carries the released moisture away from the chamber.

5. Sensors continuously monitor the drying process, and the control system automatically adjusts power, temperature, and duration for optimal results.