The ring die is a major vulnerable part on the wood pellet machine and also the major source of equipment wear and tear. It is the component that is most prone to wear and replacement in daily production. If the ring die is not replaced in time after wear, it will directly affect the production quality and products. Therefore, it is very important to understand and grasp the circumstances under which the ring die of the wood pellet machine should be replaced.
1.After the ring die of the wood pellet machine reaches its service life, it reaches a critical point. At this point, the inner wall of the die hole has worn out, the hole diameter has increased, and the produced pellets may deform, crack or come out directly. It is necessary to pay more attention to observation.
2. The feeding bell mouth of the ring die hole is ground smaller and smoother, reducing the amount of raw material squeezed into the die hole by the pressure roller. As a result, the squeezing force drops, which easily leads to die hole blockage, causing partial failure of the ring die, reduced output and increased energy consumption.
After the inner wall of the ring die hole is worn, the inner surface roughness increases, which reduces the smoothness of the pellet surface, hinders the feeding and extrusion of the material, and decreases the pellet output.
4. After long-term use and wear of the inner holes of the ring die, the walls between adjacent die holes become thinner, thereby reducing the overall compressive strength of the ring die. Over time, cracks are prone to occur on the ring die. If the pressure remains unchanged, the cracks will continue to extend, and even the ring die may break or burst.
5. To enable the ring die of the pellet machine to achieve greater production efficiency, it is not necessary to replace the ring die without affecting the quality and output. The cost of replacing the ring die once is also very high.
How can the ring die of the wood pellet machine play a greater role? It is very important to maintain and service the pellet machine in a timely and correct manner.
If the ring die is to be stored for a longer time, the oil inside the ring die needs to be removed. If it is stored for too long, it will be very difficult to remove it, which will have a great impact on the ring die.
The ring die needs to be placed in a place that is frequently ventilated and dry. If stored in a damp place, any ring mold will be corroded. The straw filled on the ring mold will absorb moisture, accelerating the corrosion process and seriously reducing the production life and efficiency of the ring mold.
When the ring die needs to be replaced during work, the pellets inside the removed ring die should be cleaned up. Uncleaned die holes in the pressure roller and the ring die will accelerate the corrosion rate, causing damage to the ring die and making it unusable.
When preserving the ring die, it is necessary to do it carefully. The die holes are all punched by high-speed guns, and the brightness is very high. To achieve high output, it is essential to ensure that the holes of the ring die are bright, clean and bright.
The above is the situation under which the ring die of the wood pellet machine should be replaced and the maintenance method of the ring die of the pellet machine.