| NEWS - How to adjust the distance between the cutter and the ring die in the pellet mill? |
|
Pelletizers are widely used in pellet forming processing, mainly for processing feed, biomass and other pellet materials.
The material is extruded into shape from the die holes through mutual squeezing between the ring die and the roller in the ring die granulation chamber, and then cut into granules of the required length by the cutter.
  Cutting knives are generally divided into hard-blade type and thin-blade type. Hard blades have good wear resistance but poor toughness, and are suitable for large-sized livestock and poultry feed, etc. Thin blades have good toughness but poor wear resistance, and are suitable for small-sized aquatic feed.
By adjusting the position of the cutter, particles of different lengths can be obtained. When adjusting, first loosen the lock nut, then turn the adjusting handwheel to move forward or backward to change the distance from the cutter to the ring die.
Hard blades generally need to be adjusted so that the cutting edge is about 5mm away from the outer surface of the ring die. The thin blade, due to its elasticity, can be adjusted to fit the outer surface of the ring die, thus ensuring that the cut particles are neat and uniform.
The number of cutters is usually determined by the number of rollers in the granulator.
Theoretically, when several cutters are used simultaneously, the cutting edges should be adjusted to be at the same distance from the outer surface of the ring die, so that the cut particles are neat.
In actual production, there may be distribution defects in the feeding process of the pellet machine. The amount of feed allocated to each press roller cannot be guaranteed to be exactly the same, resulting in different pellet lengths in each extrusion zone.
In this regard, we should adjust the position of each cutter separately, so that the cutter at the roller with less feed distribution is closer to the ring die and the one with more is farther away. Only in this way can the overall length of the produced particles be consistent.
|
 |
 |
 |
 |
||
