The equipment adopts efficient radiation heating, and the materials are evenly heated; High efficient water trap is adopted, and rapid defrosting can be realized; High efficiency vacuum unit is adopted, and oil-water separation can be realized; The parallel centralized refrigeration system is adopted, and multiple channels of cooling are provided on demand. The working condition is stable, which is beneficial to energy conservation; Artificial intelligence control is adopted, with high control precision and convenient operation. The quality requirements of Xinyu Instrument Network for freeze-dried products are: constant biological activity, uniform appearance and color, full shape, firm structure, fast dissolution rate and low residual moisture.

There are various drying methods, such as sun drying, boiling drying, drying, spray drying and vacuum drying, but common drying methods are usually carried out at temperatures above 0 ℃ or higher. The dried products generally have the problems of shrinking in size and hardening in texture. Most volatile components will be lost, some heat sensitive substances will be denatured and deactivated, and some substances will even be oxidized. Therefore, there is a great difference in properties between the dried products and those before drying.