Why Are The Finished Products Produced By The Biomass Pellet Machine Rough?

In the use of the biomass pellet machine, the die compression ratio refers to several conditions that have a great influence on the use effect of the mold, such as aperture, thickness, trumpet taper and expansion, mold material and hardness. Generally speaking, the compression ratio of the pellet machine die is determined according to the raw material, and the mold of the biomass pellet machine is very important for the molding of the raw material. The mold is too thick, the raw material molding time is long, the particle density is large, and the extrusion is difficult. The mold is thin and easy to break, the particle density is relatively small, the extrusion temperature is low, but the forming rate is low or the forming is poor.
Roughness is also an important indicator for measuring the quality of the ring die. Under the same compression ratio, the larger the roughness value, the stronger the anti-extrusion performance of the wood chip pellets, and the more difficult it is to discharge. Excessive roughness will also affect the quality of the particle surface. The appropriate roughness value should be between 0.8 and 16. The die compression ratio pelletizer is determined according to the raw material. For example, the compression ratio of poplar is 1: 6, the compression ratio of pine is 1: 7, the compression ratio of hardwood is 1: 5, the compression ratio of wood chips is 1: 5.5, and the compression ratio of corn stalks is 1: 6.5. From these simple numbers, we can see that the compression ratios of different raw materials are different. The harder the raw material, the smaller the compression ratio. The more raw materials, the greater the compression ratio. In other words, the larger the raw material, the easier it is to press and form. The larger the raw material, the more fibers, and the easier it is to form materials with more fibers. So let's talk about the compression ratio of poplar wood of 1: 6.

In addition, during the grinding process of the equipment, the grinding of the entire blade is inevitable. Among the grinding parts, the grinding claws and hammers are the vulnerable parts of the sawdust grinder, and they are also the main parts that affect the grinding quality and productivity. The grinding claws and hammers should be replaced in time after wear. When replacing the claws of the claw crusher, the disc should be pulled out first.
In summary, the grinding effect of different materials during the grinding process is different, which is closely related to their own properties. In addition, it should be noted that in the process of selecting and purchasing equipment and molds, special attention should be paid to their thickness and roughness, which will affect the molding quality of biomass pellets.