Changzhou Shunde Drying Equipment Manufacturing

The operation of the vacuum耙式(disk) dryer is less labor-intensive than that of the box dryer, allowing for the recovery of useful moisture from the material, with favorable operating conditions and easier management. Its drawbacks include lower production capacity, a more complex dryer structure, and a tendency for the agitator blades to become damaged. The disk vacuum dryer is widely used in the dye and medical industries, such as drying materials like intermediate dyes, anthraquinone sulfonic acid, olive green R, salicylic acid intermediates, kaprolactone polymers, and diphenylamine. The equipment structure of the vacuum耙式(disk) dryer. The vacuum耙式(disk) dryer (recommended to use RD multi-layer, multi-stage, multi-effect drying units) is suitable for heat-sensitive materials that are prone to oxidation at high temperatures, materials that are prone to caking during drying, and materials where the steam emitted during drying needs to be recovered.
Dry materials are added to the center of the upper part of the vacuum耙式干燥机's shell. Under the stirring of the continuously rotating rake teeth, the surface of the material is continuously renewed upon contact with the shell wall. The material to be dried is indirectly heated by steam (or hot water, thermal oil), rather than by direct heat. The vaporized moisture is promptly removed by a vacuum pump. The material to be dried is indirectly heated by a heat carrier, causing the moisture in the material to vaporize, and the vaporized moisture is promptly排出 by the vacuum pump.
Due to the high vacuum level of the operation, typically ranging from 400 to 700 mmHg, the vapor pressure of water on the surface of the dried material is significantly greater than the vapor pressure within the evaporative space of the dryer shell. This facilitates the expulsion of moisture from both the internal and surface layers of the dried material, enhancing the movement of water molecules, and ultimately achieving the drying objective.