Paper Mill Equipment Fiber Deflaker Maintenance Guide

The fiber deflaker is an important machine in the paper making line. It unwinds fiber bundles without changing the fiber structure. It directly affects pulp uniformity and paper machine stability. However, there are two common problems with this fiber deflaker. The first problem is disc wear. The fast rotation causes wear on the teeth rings, which lowers the deflaking effect. The second problem is blockage. Large impurities, wrong pulp consistency, or worn teeth can cause the fiber deflaker to block, leading to production drops and downtime.

To solve disc wear, you should check and adjust the gap regularly. You can use spacers to adjust the gap on the fiber deflaker. You can also regrind the worn discs to restore the tooth shape. Using strong wear-resistant materials and lighter rotors helps reduce the load. To solve blockage issues, you must improve upstream pre-treatment. Use a vibrating screen to catch large impurities before they enter the fiber deflaker. You also need to control the inlet consistency strictly. Regular cleaning and checking of the teeth rings are very important for the fiber deflaker. The table below shows the key parameters to prevent problems:

Item	Specification
Starting Disc Gap	> 1 mm
Running Disc Gap	Not less than 0.50 mm
Ideal Consistency for Gear Type	3% to 5%
Upstream Equipment	Vibrating screen
Maintenance Action	Regrind discs, clean teeth

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