What are the mechanical classifications of vacuum dryers?
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Rake vacuum dryer <br> <br> Rake vacuum dryer machine is a conductive heat transfer. The material is not directly in contact with the heating medium, and is suitable for drying a small amount of mud-like or paste-like materials which are not resistant to high temperature and easy to be oxidized, and the water content is 15% to 90%. The blades of the horizontal jaw mixer in the dryer are made of cast iron or steel and are mounted on a square shaft with half of the blades to the left and the other half to the right. The shaft speed is 7~8r/min, which is driven by the motor with gearbox. At the same time, the automatic steering device is adopted to change the rotation direction of the shaft and change the rotation direction of the agitator every 5~8 minutes.
Plate Plate <br> <br> vacuum dryer vacuum dryer, also known as disc vacuum dryer, dry monograph published in Japan have been introduced. China's Shanghai, Shijiazhuang and other places have been successfully developed. It is a multi-layer fixed hollow heating disc (also known as a loading tray), which is developed on the basis of intermittently stirring and conducting the dryer, and has been comprehensively improved. Conductive-based drying unit.
Energy efficient low temperature with continuous low temperature vacuum dryer <br> <br> belt type continuous vacuum dryer at conventional spray drying and freeze drying advantages and disadvantages are repeated comparison successfully developed a new concept Type drying equipment in the drying of traditional Chinese medicine, western medicine, chemical, food, health care products and other industries, spray drying is beneficial to the cost, but the solubility of the product. The original taste and the shape of the powder have large defects, the viscosity is slightly higher and there is The products required for heat sensitivity are even more powerless. Conventional freeze-drying results in excellent product solubility and high quality products, but the yield is too low and expensive.
The various process indexes of the low-temperature continuous vacuum dryer are just between the above two kinds of equipments, which can make the inside of the dried product porous and loose, retain the original material properties of the product, and have a good appearance. Meet the processing requirements of a large part of heat sensitive materials.
The low-temperature continuous vacuum dryer breaks through the technical problem of continuous feeding and discharging under vacuum, and the static drying is successfully converted into dynamic drying. The production cost of the dried products is greatly increased while the production cost is reduced.
The low temperature continuous vacuum dryer is especially suitable for the drying of high viscosity, high fat, high sugar and other materials which are difficult to solve by spray drying and vacuum oven. And can maintain the stability and consistency of the product batch.
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