When the vacuum is dried, the dried material is subjected to heat drying under vacuum. The water is vacuumed by a water ring vacuum pump or a water jet pump to form a vacuum. Vacuum drying is suitable for drying materials that are not resistant to high temperature and easy to oxidize, or mud, paste materials that use organic solvents as a drying medium, and valuable biological products. The advantages are: increase drying speed, shorten drying time and protect dry product quality. The structure and characteristics of the vacuum dryer: vacuum chamber dryer, which has a steel casing with a rectangular or cylindrical section and a plurality of hollow partitions. Steam or hot water is introduced into the partition. The short tube connects the hollow partition and the manifold. Steam is introduced into the main pipe, and the downward pipe discharges the condensed water. The tray on which the material to be dried is placed is placed on the partition, the chamber door is closed, and the inside of the chamber is evacuated by a vacuum pump. The steam in the separator gradually heats the contents of the tray to a specified temperature, and the moisture is vaporized under room pressure and condensed in the condenser. The condenser is installed between the dryer vacuum pumps. The main features of the vacuum chamber dryer are: 1. When the heating temperature is constant, increasing the vacuum can increase the drying speed; 2. When the vacuum is constant, increasing the heating temperature can increase the drying speed; The solvent evaporated in the material is recovered by the condenser; 4. The heat source is low pressure steam, waste heat steam, hot water or other medium (determined by the heat resistance of the material); 5. The heat loss of the dryer is low, and the heat efficiency is high; 6. Before the drying operation The car can be sterilized. During the drying process, no impurities are mixed in, and the product is not polluted; 7. The dried material is in a static state, and the formation is not easily damaged. The above description is for reference only. For details, please visit Changzhou Binda Dry Granulation Equipment Co., Ltd. or.
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