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Influence of Improper Operation On the Output of Wood Pellet Machine

When operating the wood pellet machine, after the raw materials are tempered, the suitable water content should be 15% to 16.5%. The specific judgment is that it is better to form a ball by hand and disperse it after letting go. The gap between the pressure roller and the ring die has a great influence on the granulation quality. Generally, the gap should be 0.05~0.3 mm. When the gap is greater than 0.3 mm, the material layer is too thick and the distribution is uneven, which will reduce the granulation output. When the gap is less than 0.05 mm, the wood pellet machine is severely worn, and the new ring die should be polished before use due to the adhesion of some iron filings and oxides to the inner wall of the die hole to reduce frictional resistance and improve Granulation yield.

For the wood pellet machine that has been used for a long time, the feeding scraper is seriously worn, so that the amount of feed entering the range of the rollers and dies is less, thereby reducing the output of the pellet mill and increasing the powder content. The clogging of the die hole is mainly caused by pelleting It is caused by materials with poor performance or new molds that have not been polished, or that have not been cleaned with oily materials after granulation. When the friction coefficient between the material and the pressure roller and the inner surface of the ring die is small, the material is easy to slip, thereby reducing the output, and when the friction coefficient between the material and the inner wall of the die hole is too large, the material will not be pressed out of the die hole and the pelleting output will be reduced. Factors that affect the friction of the wood pellet machines include formula, tempering, and the machine itself.

The feed volume of the wood pellet machine is reduced. Even if the operator has a high level of conditioning, it is impossible to increase the output. The cooling of the pellet raw material is insufficient, the pellets are loose, and the powder increases after being lifted by the elevator. Thereby reducing the granulation output, especially when the pellets need to be crushed, this effect can be adjusted by adjusting the cooling air volume and cooling time.