Vacuum drying machine with cooling section

Abstract

The invention discloses a vacuum drying machine with a cooling section. The vacuum drying machine is composed of a drying bin with the cooling section, a hopper, a discharge device, an elbow, a gas guide pipe, a support, a vacuum unit, a heating device, a driving device and rails. The drying bin with the cooling section is composed of a shell, an inner bin, a heat conduction medium and a safety valve. The support supports a feed port and a discharge port of the two ends of the inner bin. The vacuum unit sucks gas in a bin body of the inner bin through a gas guide pipe. In the material drying process, the drying bin with the cooling section can be rotated on the support through the driving device, cooling vertical pipes arrayed spirally have functions of stirring and propelling materials, no dead corners exist during material drying, materials are not prone to caking when dried in the drying section of the inner bin, material drying time is shortened, material drying quality is uniform, dried materials are cooled in the cooling section, material drying efficiency is improved, the material drying effect is optimized, and green, energy-saving and environment-friendly drying is achieved.

Description

technical field [0001] The invention relates to a dryer, in particular to a vacuum dryer with a cooling section. Background technique [0002] In the market, materials such as grain, chemical products, coal, gravel, sand, mineral products, pasture, crops, and local specialties are vacuum-dried and prepared. The material vacuum drying equipment performs vacuum low-temperature drying on materials under negative pressure and vacuum state. The problem of high hot air temperature and poor quality of materials after drying has been solved; the heating of materials in vacuum drying on the market now is to dissipate heat through metal exhaust pipes placed in parallel, which has low heat conduction and heat dissipation efficiency, low exhaust efficiency, and poor control of vacuum degree. As the water vaporization temperature rises, the heat energy required for drying will increase a lot, and the waste heat will not be utilized; the dried material has dead angles, and the material is...

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Problems solved by technology

[0004] The problem to be solved by the present invention is to overcome the deficiencies in the prior art. On the basis of the drying chamber with a cooling section that I applied for, a vacuum dryer with a cooling section is provided, which increases the heat exchange area and improves The heat conduction and heat exchange speed of heat energy is guaranteed, the material is vacuum dried in the drying section, and it is not easy to agglomerate during drying, and the dried material is cooled in the cooling section

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