Particleboard production equipment
Single Channel Dryer
The single-channel dryer is a crucial piece of equipment in the production of oriented strand board (OSB). It is designed to dry long, wet shavings that come from the long-size planer. This dryer is known for its high thermal efficiency, minimal damage to the shaving pattern, and large processing capacity. As a result, it is widely used by manufacturers of OSB and general particleboard. To avoid collisions or friction between the shavings during the drying process, a hollow tumble dryer is often employed as a single-channel drum dryer.
Inside the drum, a combination of airflow and the rotation of the drum causes the shavings to follow an approximate spiral path. This ensures that the shavings only experience gentle collisions or friction with each other, which helps preserve their structure and appearance. Given the larger size and higher moisture content of the oriented shavings or wheat straw scraps, the drying process must be completed quickly. Therefore, a high-temperature drying medium—typically ranging from 250 to 300 degrees Celsius—is commonly used to speed up the process.
Structure
The main components of the single-channel dryer include the front end, feed port, sealing system, drum assembly, rear end, gear transmission mechanism, roller assembly, and wheel assembly. In the front section of the drum, a spiral copy board is installed to ensure even distribution of the wet shavings as they enter the drum. This allows the shavings to move forward smoothly as the drum rotates.
The rest of the drum is equipped with straight copy boards that lift and scatter the shavings during rotation. This action increases the surface area exposed to hot air, enhancing the drying efficiency and accelerating the overall process. The design not only improves performance but also ensures consistent quality in the final product.
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