freeze dryer important structure system
Freeze dryer is a small in-situ freeze-drying equipment, which is suitable for the pilot plant and a small amount of production in pharmaceutical plants. It can also be used for food, Chinese medicine and other freeze-drying treatment. The advanced structure design of in-situ freeze-drying technology can prevent the pollution from the material transfer process and realize the automation of drying and sublimation. The freeze-drying machine has shelf heating and programming functions It is mainly divided into standard type and capping type. It is widely used in pharmaceutical factory, food factory, life science and other places that need freeze-drying process.
freeze dryer features :
Silicone oil is used to conduct heat to ensure that the temperature of each shelf and each point of shelf is consistent, and the temperature control accuracy is high. It is convenient to observe the freeze-drying process of materials by using high transparent plexiglass door panel. The electric control system has powerful functions. It can not only set the freeze-drying process, but also can select PLC control system to realize eutectic point test, remote control and other functions.
The features of each control system of freeze dryer are as follows:
Freeze drying automatic control system: programmable, from freeze-drying to defrosting are programmed control.
Heating control system: thermal cycle monitoring and protection, special heating materials, fuzzy PID control algorithm.
The optimized control algorithm of freeze-drying curve can control the heating rate of samples and the vacuum value of the current stage in the sublimation and analytical drying stages.
Cold trap defrosting system: electric heating defrosting, high safety performance; defrosting speed is fast, which solves the inconvenience caused by traditional soaking defrosting.
Freeze drying end point test system: it can automatically test the freeze-drying end point after the end of the analytical drying stage to ensure that the moisture content of the material reaches the standard requirements.
Vacuum regulation system: vacuum degree is adjusted during sublimation and desorption drying process to avoid foaming of special substances, bottle blowing and speeding up freeze-drying efficiency.
Pulse backfill system: slow, medium and fast backfill modes can be selected to avoid the problem of effective material being blown away and lost after the freeze-drying of granular and flocculent materials.
Automatic drainage system: interlock with vacuum system after drainage to avoid vacuum system failure caused by forgetting to close drain valve again.
The freeze-drying machine is suitable for drying high-grade raw materials, Chinese herbal pieces, biological, wild vegetables, dehydrated vegetables, food, fruit, chemical, pharmaceutical intermediates and other materials.
Freeze drying of medicine includes two parts: Western medicine and traditional Chinese medicine. In the aspect of injection, freeze-drying technology is used more, which improves the quality and storage life of drugs, and brings benefits to both doctors and patients. In traditional Chinese medicine, such as ginseng, pilose antler, yam, Cordyceps sinensis and other small amount of Chinese medicine freeze-drying. In the field of biotechnology products, freeze-drying technology is mainly used for the production of drugs such as serum, plasma, vaccine, enzymes, antibiotics, hormones, etc.; the inspection drugs of Biochemistry, immunology and bacteriology; the long-term preservation of blood, bacteria, arteries, bones, skin, cornea, nerve tissues and various organs.