In modern industrial production, the drying process is a critical link that determines product quality. The Vacuum Belt Dryer, as an advanced continuous drying equipment, is becoming the preferred solution for the natural extracts, biopharmaceutical, and fine chemical industries due to its unique low-temperature drying mechanism and excellent product retention rate.
What is a Vacuum Belt Dryer?
Core Working Principle: The Perfect Combination of Low Temperature and Continuity
The workflow of the Vacuum Belt Dryer embodies the efficient integration of precision machinery and thermodynamics:
Continuous Feeding and Spreading: The material to be dried (such as concentrated extract) is evenly spread onto a special PTFE conveyor belt via a screw pump or spreader.
Vacuum Environment Construction: The interior of the equipment maintains a high-vacuum state, which significantly reduces the drying temperature of the material (typically requiring only 40-60℃).
Contact Heating and Drying: Driven by a drive unit, the conveyor belt moves slowly through several independent heating and cooling zones. Heat is transferred to the material via contact with heating plates, completing the drying process within 30-60 minutes.
Microporous Structure Formation and Discharge: The dried material forms a cake with a microporous structure. After cooling, it is processed through a cutting device and crushing system, making it ready for direct tableting or filling.
Core Working Principle: The Perfect Combination of Low Temperature and Continuity
The workflow of the Vacuum Belt Dryer embodies the efficient integration of precision machinery and thermodynamics:
Continuous Feeding and Spreading: The material to be dried (such as concentrated extract) is evenly spread onto a special PTFE conveyor belt via a screw pump or spreader.
Vacuum Environment Construction: The interior of the equipment maintains a high-vacuum state, which significantly reduces the drying temperature of the material (typically requiring only 40-60℃).
Contact Heating and Drying: Driven by a drive unit, the conveyor belt moves slowly through several independent heating and cooling zones. Heat is transferred to the material via contact with heating plates, completing the drying process within 30-60 minutes.
Microporous Structure Formation and Discharge: The dried material forms a cake with a microporous structure. After cooling, it is processed through a cutting device and crushing system, making it ready for direct tableting or filling.
Why Choose a Vacuum Belt Dryer? Four Core Advantages
For enterprises pursuing high-quality output, the Vacuum Belt Dryer demonstrates irreplaceable value:
Ultimate Low-Temperature Protection: Due to the vacuum environment, materials do not need to undergo high-temperature baking. This gentle drying process (40-60℃) is particularly suitable for heat-sensitive materials, effectively preventing the degradation of active ingredients and perfectly preserving the color, aroma, and taste of natural products.
Superior Product Quality: Materials processed by the Vacuum Belt Dryer exhibit a loose, porous microscopic structure. This structure endows the product with excellent solubility and fluidity, enhancing the grade of granule and tablet products with a premium appearance.
High Purity Without Additives: The equipment can directly process concentrated extracts without adding any excipients (such as dextrin). This not only reduces the dosage of the final product but also ensures the purity and high concentration of the extract, aligning with modern health product consumption trends.
Automation and Easy Cleaning: Modern Vacuum Belt Dryers are equipped with advanced DCS automated control systems, achieving full automation from feeding to discharging. Additionally, the integrated CIP (Clean-In-Place) system allows for rapid cleaning when changing product batches, significantly reducing labor intensity and preventing cross-contamination.
Industry Applications of the Vacuum Belt Dryer
Pharmaceutical Industry: Widely used for drying heat-sensitive materials such as traditional Chinese medicine (TCM) extracts, western medicine APIs, biological products, and fermentation liquids. In the production of TCM formula granules, the vacuum belt dryer has become a mainstream drying equipment.
Food Industry: Suitable for the low-temperature drying of food ingredients such as instant coffee, condiments, fruit and vegetable juices, milk powder, and enzyme preparations, maximizing the retention of product color, flavor, and nutritional content.
Chemical Industry: Used for drying slurry materials containing organic solvents, such as fine chemical products, catalysts, dye intermediates, and polymer materials, achieving solvent recovery and environmentally friendly emissions.
Bioengineering: Applied to the drying of bioactive substances such as enzyme preparations, amino acids, and probiotics, ensuring product activity is not destroyed by high temperatures.
Technical Specifications and Customization Capabilities
Our Vacuum Belt Dryers come in complete specifications to meet different production capacities and process requirements. Typical technical parameters are as follows:
Drying Area: 5-120 square meters (customizable according to customer needs)
Working Vacuum Degree: -0.09 to -0.098 MPa
Heating Temperature: 30-120℃ (adjustable)
Material Thickness: 5-30 mm
Conveyor Belt Speed: 0.2-5 m/min (adjustable)
Heating Method: Hot water or thermal oil
Control Method: PLC fully automatic control
We provide full-process customized services ranging from process design and equipment manufacturing to installation and commissioning, based on customer material characteristics, capacity requirements, and plant conditions.