Important Precautions When Using a Vacuum Disc Dryer

The vacuum disk dryer is composed of a refrigeration system, vacuum system, heating system, and electrical instrument control system. Its main components include the drying chamber, condenser, refrigeration unit, vacuum pump, and heating/cooling devices. The working principle involves freezing the items to be dried below the triple point temperature, then under vacuum conditions, the solid water (ice) in the items directly sublimates into water vapor, which is then removed from the items to achieve drying. After preliminary processing, the material is sent to a quick-freezing storage for freezing, then to the drying chamber for sublimation and dehydration. Afterward, it is packaged in the post-processing workshop. The vacuum system establishes a low-pressure condition in the sublimation drying chamber, the heating system provides latent heat for sublimation, and the refrigeration system supplies the required coldness to the cold trap and drying chamber.

The vacuum plate dryer utilizes high-efficiency radiant heating for uniform material heating; it employs a high-efficiency water trapping refrigeration trap for quick defrosting capabilities; a high-efficiency vacuum unit for oil-water separation is also included; a parallel centralized refrigeration system provides multi-route on-demand cooling, ensuring stable operation and energy efficiency; and it is controlled by artificial intelligence for high precision and ease of operation. The quality requirements for freeze-dried products are: unchanged biological activity, even appearance and color, full shape, strong structure, fast dissolution, and low residual moisture content. To produce high-quality products, a comprehensive understanding of the theory and technology of freeze-drying is essential.

The vacuum disk dryer is widely used in various industries such as food and chemical engineering. The drying equipment is mainly used for powder drying, baking, and sterilization and disinfection of various glass containers. It is particularly suitable for rapid and efficient drying of heat-sensitive, easily decomposable, easily oxidizable substances, and complex composition items. Over the past decade, China's drying equipment industry has entered a relatively mature stage, capable of meeting the actual needs of users in various fields. Given the "green" advantages of vacuum drying equipment, its application is increasingly widespread. In the field of food drying, the demand for larger-scale vacuum drying equipment will gradually increase, and the market prospects are very promising.