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Reasonably Adjust the Distance Between Ring Die and Press Roller

The reasonable distance between ring die and press roller has significant influence on the effective utilization of ring die. Generally speaking, the distance between 0.1 and 0.3 is optimal. How to adjust the clearance between ring die and press roller? When the new die is installed in wood pellet press, the first thing we should do is to loosen the bolt and adjust the press roller to the condition that the external circular surface of press roller closely adjoins to the internal circular surface of ring die. Secondly, the eccentric shafts of press roller should be adjusted in sequence to make the distance between each press roller and ring die proper. Last, the adjuster bolt should be firmly fixed.

wood pellet mill

During the actual utilization process, users often protect the ring die by sacrificing the press roller because of the very expensive price. Therefore, under the situation of selecting rational clearance, the hardness of press roller should not be too strong. In other words, the wear resistance of press roller should be lower than ring die.

During the production process of ring die, the material awaiting for utilization should be screened necessarily for the fear of the entry of hard objects like gravel block, ore briquettes, bolt, scrap iron and so on. These hard objects will accelerate the battered speed of ring die and even cause severe explosion in die when the stress limit is exceeded. When the new ring die assembled with cone surface is installed in wood pelletizing machine, the corn surface should be necessarily cleaned and assembled with oil for the fear of being damaged or scratched.

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