Introduction to the classification of freeze dryer
The freeze dryer and the vacuum freeze dryer can also be referred to as a freeze dryer. There are several types of models, but the components are roughly the same, including: drying oven, water vapor condenser (the two components are sometimes combined into one), refrigeration system, vacuum system, heating system, control system, etc. It covers knowledge in the fields of refrigeration, vacuum, thermal engineering, machinery, fluids, electrical control and pressure vessels. According to the structure, the freeze dryer can be divided into a gland type freeze dryer, a common type freeze dryer, a multi-manifold type freeze dryer, a multi-tube gland type and a multi-manifold type, which are all Some improvements in the freeze dryer function have added some of its auxiliary functions. The gland type has the function of vacuum packaging compared with the common type. The multi-manifold type is capable of lyophilizing a plurality of substances, thereby improving the drying efficiency. According to the function, the freeze dryer can be divided into an in-situ type and a bell-type freeze-drying machine. The bell-type freeze-drying machine: the freeze-drying chamber and the cold trap are separate upper and lower structures, and the freeze-drying chamber has no pre-freezing function. This type of lyophilizer requires manual operation when it is transferred to the drying process after the material has been pre-frozen. Most of the experimental freeze dryers are bell-type, which has a simple structure and low cost. Most of the freeze-drying chambers use a transparent plexiglass cover to facilitate the observation of the lyophilization of the material. In-situ freeze-drying machine: the freeze-drying chamber and the cold trap are two independent cavities. The shelf in the freeze-drying chamber has a cooling function. After the material is placed in the freeze-drying chamber, the pre-freezing and drying process of the material does not require manual operation. . This type of freeze dryer has a complicated manufacturing process and high manufacturing cost, but the in-situ freeze dryer is the development direction of the freeze dryer, and is an ideal choice for lyophilization process, especially suitable for medicine, biological products and other special products. Freeze-dried. Other classifications are also based on the freeze-drying area of ​​the freeze dryer, which can be divided into small, pilot-type and production-type cold dryers; depending on the substance to be lyophilized, it can be divided into freeze-dried biological products. The lyophilizers for dryers and freeze-dried foods can be divided into batch freeze dryers and continuous freeze dryers according to different operation modes. Wheeled Hose Reel Cart,Hose Cart With Wheels,Large Hose Reel Cart,Garden Hose Cart With Wheels NINGBO QIKAI ENVIRONMENTAL TECHNOLOGY CO.,LTD , https://www.water-hose-reel.com