Details and characteristics of wood vacuum dryer
A wood vacuum dryer is a device that removes moisture from the interior of a container by drawing air from the container to achieve a predetermined vacuum. When dry, the canister is under vacuum. The jacket is heated with hot water (or steam or thermal oil). As the tank rotates at a low speed, the material continuously moves up and down, entering a "diamond-shaped trajectory" inside and outside the tank, and absorbs and evaporates.
The water vapor is continuously discharged through the vacuum pipeline to achieve the purpose of drying the material. While drying the mixture, the built-in spraying, filtering and crushing unit can realize its multifunctional operation according to customer requirements. Under vacuum conditions, the air in the vacuum dryer is scarce, and the usual heating method cannot be used. In order to solve the heating problem in the vacuum drying of wood, vacuum drying with high frequency continuous heating is adopted. High-frequency vacuum drying can eliminate the surface hardening and cracking that is easy to occur during atmospheric drying. The pressure difference between the interior and the surface of the wood in high frequency vacuum drying is large. Under the action of the pressure gradient, the moisture quickly moves to the surface, while increasing the drying speed, shortening the drying time, and reducing the operating cost of the equipment. In addition, under low pressure, the oxygen in the drying medium is scarce, the discoloration of the material caused by heat and oxidation is less, and the natural color of the material can be basically maintained.
Features of wood vacuum dryer:
1. Higher drying rate can be obtained at lower temperature and full use of heat.
2. Drying at low temperature or drying of heat-sensitive materials.
3. It can dry solvent-containing materials, and the solvent needs to be recovered.
4. It can be sterilized before drying, and impurities are not mixed during the drying process.
5. The vacuum dryer is a static vacuum dryer, so it will not damage the shape of the drying material.
