Various vacuum pumps are used in the wood processing industry. Our vacuum pump is used from placing wood on the workbench to protecting the final product. For this reason, the work area should be kept clean and free of debris that may affect the final product.
Vacuum pumps are also used as central vacuum systems in wood processing to improve efficiency and minimize costs associated with maintaining wood and those that are no longer necessary for special workbenches.
Vacuum pump applications: wood drying, wood preservation, and wood impregnation.
Maintain and Grab
To ensure the safety of the processing, (wood) workpieces are often automatically fixed on the workbench through vacuum suction heads. During the machining process, it is necessary to maintain a stable vacuum degree of at least 15HgV in order to ensure that the workpiece is firmly fixed on the worktable. If the vacuum degree drops below the minimum required vacuum degree, the workpiece cannot be firmly fixed.
Wood drying
The use of vacuum dryers in traditional wood drying chambers has increased the drying time from a few weeks in the past to only 3 to 4 days now.
During the drying process, the pressure in the drying chamber gradually decreases to a minimum. The drying chamber is filled with high-pressure steam, and oxygen needs to be extracted to avoid cracks and color changes in the wood, which are usually caused by excessive oxygen content. Vacuum pumps/centrifugal fans are used to circulate steam and transfer heat to wood.
Wood preservation
Whether before or after processing, wood must be protected to avoid adverse environmental effects such as heat, moisture, pests, and microorganisms. It is widely used to preserve wood by immersing it in a preservative solution. However, the disadvantage is that the depth of penetration of the anti-corrosion solution into the wood is only a few millimeters. However, complete protection is also possible. It is to remove air and dry the wood with the assistance of a vacuum pump, so that the preservative can penetrate much deeper, greatly optimizing the protective effect.
Impregnation of logs
Soak the logs to prevent decay in an unprotected environment. For this purpose, pack the wood into a large airtight container. After installation, use a liquid ring pump to extract water vapor from the wood above the container. Then, inject chromium arsenic compound (CCA) into the container. At this point, the vacuum pump is used as a compressor to pressurize the container and impregnate the wood with the required concentration of CCA.
Soaking wood is a widely used solution, but its disadvantage is that the liquid only enters the wood a few millimeters. However, a vacuum pump can be used to completely protect the wood after degassing and drying. In this way, the preservative penetrates deeper and optimizes the protective effect.
