First, let's explain the adjustment principle: the faster the rotation speed, the smaller the particles; the slower the rotation speed, the larger the particles. If the rotation speed is too high, the material keeps being thrown to the edge of the disc, making it difficult to clump together; if the rotation speed is too low, the material tumbles weakly, resulting in more powder, poor pelleting, and loose particles.

The standard rotation speed range: small disc granulators generally operate at 22 to 35 revolutions per minute. Lower the rotation speed for producing larger particles and appropriately increase it for producing smaller particles.

There are three common adjustment methods. The first is frequency conversion speed regulation, which is currently the most commonly used method. Fertilizer production machine is equipped with a frequency converter. The frequency value can be adjusted directly on the control panel to smoothly change the disc rotation speed without modifying the mechanical structure. The adjustment is uniform and suitable for flexible adjustment based on the dryness of the material and particle size requirements.

The second method is speed regulation by replacing the pulley, which is a mechanical speed regulation method. The transmission ratio is changed by altering the size ratio of the motor pulley and the driven pulley of the main shaft. Increasing the size of the motor pulley increases the speed; increasing the size of the driven pulley decreases the speed. Once adjusted, the speed is fixed, suitable for long-term production of a single specification of granules.

The third method involves adjusting the belt tension and the reducer. Belt slippage will cause the actual speed to be lower than expected; simply tightening the V-belt will restore the rated speed. Different reducer speed ratios result in different speeds, suitable for factory-configured adjustments.

During adjustment, the disc tilt angle, water spray volume, and material moisture content should be fine-tuned simultaneously. After adjusting the speed, observe the material's tumbling behavior; the optimal state is when the material tumbles and rises and falls in a regular spiral pattern.