A vacuum is a state of space without any matter. Sound cannot propagate under vacuum conditions because there is no propagation medium, but the propagation of electromagnetic waves is not affected by vacuum. Due to the thinness of the gas in the vacuum state, the molecular density of the gas is less than that of the atmospheric pressure. The number of collisions between molecules is relatively reduced, and the molecular free path of the gas is increased. In addition, the gas pressure in a vacuum state is lower than one atmospheric pressure, so in a vacuum container, when the pressure inside the container is very small, the atmospheric pressure that the container bears can reach one atmospheric pressure. Modern technology is taking advantage of the characteristics of vacuum to develop faster. For example, the double cone rotary vacuum dryer is produced by using the characteristics of vacuum.
The double-cone rotary vacuum dryer is a double-cone rotary tank integrating mixing and drying. It is a vacuum drying device composed of a condenser, a vacuum pump and a dryer. In the tank, steam or hot water is introduced into the jacket for heating in a vacuum state. The heat contacts the wet material through the inner wall of the tank, and the wet material absorbs heat and evaporates the water vapor, which is then evacuated through a vacuum exhaust pipe by a vacuum pump. . Because the tank body is in a vacuum state, and the rotation of the tank body makes the material turn up and down continuously, so the drying speed of the material is accelerated, the drying efficiency is improved, and the purpose of uniform drying is achieved.
Due to the advanced design of this dryer, all materials can be discharged, simple internal structure, easy operation, and easy cleaning, which not only reduces the labor intensity but also improves the working environment. At the same time, when the container itself rotates, the material also rotates and the material does not accumulate on the wall, so the heat transfer coefficient is high, the drying rate is large, not only energy is saved, but also the material is dried evenly and fully, and the quality is good. Therefore, it is widely used in pharmaceutical, chemical, food, dye and other industries.
https://www.stardrying.com/
