Vacuum system is widely used in vacuum drying process. At present, vacuum drying equipment is constantly updated with the development of modern mechanical manufacturing technology and electrical technology. The so-called vacuum drying is a drying method in which the material is placed under negative pressure and reaches the boiling point under negative pressure by heating properly or by cooling down to make the material solidify through the melting point. The boiling point of water in the material decreases with the increase of vacuum degree in the negative pressure state. At the same time, vacuum pump is used to dehumidify the water in the material to reduce the water vapor content, which makes the water and other solutions in the material get enough kinetic energy away from the material surface.
Due to the isolation of air under negative pressure, some materials which are easy to oxidize and other chemical changes during the drying process can keep their original characteristics better, and the materials can be better protected by injecting inert gas and vacuuming. The common vacuum drying equipment includes: vacuum drying oven, continuous vacuum drying equipment, etc.
The process of vacuum drying is to place the dried materials in the airtight drying chamber, and heat the dried materials continuously while vacuuming with the vacuum system, so that the moisture inside the materials diffuses to the surface through the pressure difference or concentration difference. The water molecules obtain enough kinetic energy on the surface of the materials, and escape to the low-pressure space of the vacuum chamber after overcoming the mutual attraction between the molecules The process of pumping with empty pump.
Corrosion Resistant Vacuum Pump Material
Roots Vacuum Pump Exhaust Filter Element Maintenance
Roots Blower Reducing Noise Mthods
没有评论:
发表评论