Mechanical classification and technical characteristics of vacuum dryer?

Mechanical classification Double-cone rotary vacuum dryer Double-cone rotary vacuum dryer is suitable for the concentration, mixing and drying of powdery, granular and fibrous materials in chemical, pharmaceutical, food and other industries, as well as materials that need to be dried at low temperature (such as biochemical products), and is more suitable for the drying of materials that are easy to oxidize, volatile, highly heat-sensitive, toxic and not allowed to destroy crystals. The two-stage elastic connection mode of belt/chain is adopted, and the equipment runs smoothly. Specially designed technology fully embodies the good concentricity of the two shafts, and the heat medium and vacuum system adopt reliable mechanical seals or rotary joints with American technology. The machine can not only stepless speed regulation, but also constant temperature control. The heat medium consists of high-temperature heat transfer oil, medium-temperature steam and low-temperature hot water. When drying viscous materials, the "copying board" structure will be specially designed for you in the tank.

Vacuum rake dryer Vacuum rake dryer is a kind of conductive heat transfer dryer. The material is not in direct contact with the heating medium, and it is suitable for drying a small amount of mud and paste materials which are not resistant to high temperature and easy to oxidize, and the water content is 15%~90%. The blades of the horizontal rake agitator in the dryer are made of cast iron or steel and installed on a square shaft, with half of the blades pointing to the left and the other half pointing to the right. The rotation speed of the shaft is 7~8r/min, and it is driven by a motor with a reduction box. At the same time, automatic steering device is adopted to change the rotating direction of shaft and agitator every 5 ~ 8 minutes.

Plate vacuum dryer Plate vacuum dryer, also known as disc vacuum dryer, is introduced in a drying monograph published in Japan. China's Shanghai and Shijiazhuang have been successfully developed. On the basis of intermittent stirring conduction dryer, a series of advanced technologies have been integrated and continuously improved. It is a multi-layer fixed hollow heating plate (also called loading plate), rotating rake stirring and vertical continuous conduction-oriented drying device.

Low-temperature belt continuous vacuum dryer Low-temperature belt continuous vacuum dryer is a new concept of high-efficiency and energy-saving drying equipment developed after repeatedly comparing the advantages and disadvantages of conventional spray drying and freeze drying. In the drying of products in traditional Chinese medicine, western medicine, chemical industry, food, health care products and other industries, spray drying is conducive to reducing costs, but the solubility, original taste and powder form of products have great defects, and products with higher requirements for viscosity and heat sensitivity are helpless. Conventional freeze-drying can obtain excellent product solubility and high-quality products, but the output is too low and the cost is expensive. The technical index of low-temperature continuous vacuum dryer is just between the above two kinds of equipment, which can make the dried product porous and loose, retain the original material properties of the product and have a good appearance. Because it is vacuum low-temperature drying, it can meet the processing requirements of most heat-sensitive materials. The low-temperature continuous vacuum dryer broke through the technical problem of continuous feeding and discharging in vacuum, and successfully changed static drying into dynamic drying. The output of dried products is greatly improved, and the production cost is completely reduced. Low temperature continuous vacuum dryer is especially suitable for spray drying and drying of high viscosity, high fat and high sugar materials which are difficult to solve in vacuum furnace. The stability and consistency of product batches can be well maintained.

Technical features: 1. Continuous feeding and discharging can be realized under vacuum, and the feeding amount can be set freely as required. 2. The heating system can use steam, hot water, electric heating and other forms to heat the heat transfer oil. 3. The drying temperature is arbitrarily adjusted between 25-80℃, and continuous discharging is started after 20-60 minutes until the batch is completed. 4. The track is made of PTFE material, which has stable and reliable operation and uniform heating area. The track speed can be adjusted at will, and the number of floors can be divided into 2-5, which can be determined according to the user's output requirements. 5. Adopting various distribution devices, it can adapt to the drying of liquid, extract, powder, granules and other materials. 6. Equipped with an automatic crushing system under vacuum, the number of dry particles can be selected at will according to user's requirements. 7. Equipped with CIP in-situ cleaning system, automatic cleaning is fast and convenient. 8. Select the high-quality vacuum unit, carefully design it, continuously pump the speed with large capacity, and the vacuum degree is stable. 9. Low energy consumption, no three wastes and low noise. 10. It fully meets GMP certification requirements.

Main advantages: the whole process is automated, streamlined, continuous and programmed. The drying process is completed under vacuum and low temperature, so the heat-sensitive material is unchanged and there is no chance of pollution. Suitable for drying all kinds of refractory materials. The dryness (water content) of the material can be adjusted. The energy consumption is only one third of that of a centrifugal sprayer with the same output. PLC touch screen is used for operation and control, and continuous protection device is provided. The machine has reasonable design, compact structure, convenient installation and debugging, and is suitable for installation under most working conditions.

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