Why the pellet press can’t reach the high capacity?

Sometimes pellet presses have symptoms of not being able to discharge or difficult to discharge, with low yields. This leaves many inexperienced users unaware of how to deal with the occurrence of these situations. In general terms, affecting the discharge problem or the output is two major aspects. One is that the pellet press itself is not well adjusted. The other is that the raw materials of the pressed pellets are not well matched. The machine itself mainly appears in this part of the dies and roller.

The reasons for the low output of pellet press are as follows:

• If a new ring die is used, first check whether the compression ratio of the ring mold matches the raw material for processing. If the compression ratio of the ring die is too large, the resistance of the powder through the die hole is large, the pellets are pressed out too hard and the output is low; the compression ratio of the ring die is too small. If the pellet is pressed out or not formed, the compression ratio of ring mold must be re-selected to check the smoothness of the inner hole of ring mold and whether the ring die is out of circle. The inferior ring mold is due to the rough inner hole of ring mold and the lost circle of ring mould, which results in high discharge resistance and not smooth pellets. And the discharge difficulty, the output is lower, therefore must use the high-quality ring mold.
• If the ring die is used for a period of time, it is necessary to check whether the ring die inner wall cone hole is worn and whether the roller is worn. If the ring die is worn seriously, the ring die can be repaired, and the worn cone hole must be re-countersinks, and the roller wear must be replaced. The wear of ring die cone hole has great influence on output.
• The gap between ring die and roller should be adjusted correctly, the distance between ring and roll should be about 0.5 mm when producing livestock and poultry material, and if the distance is too small, it will make the roller friction ring die, shorten the service life of ring mould, cause roller slip and reduce the output.
• Pay attention to the time and quality of raw material conditioning, especially to control the moisture content of raw material before entering the machine. The moisture content of raw material before conditioning and tempering is generally 13. If the water content is too high, the moisture content of raw material after being adjusted and tempered is too high (water content ≥ 20%), there will be slip phenomenon in mold, and it is not easy to discharge material.
• In order to check the distribution of raw materials in the ring mould, the raw materials should not be allowed to run unilaterally. If similar situation occurs, the position of the size feeding scraper must be adjusted to make the raw materials distribute evenly in the ring mould, so that the service life of the ring die can be prolonged. At the same time, the discharge is more smooth.
• The moisture content of this material should also be controlled well, because the moisture content of this material has a direct impact on the molding rate and output of the machine's pressed particles. Therefore, this can be tested by means of a humidity measuring instrument between the materials entering the machine. Check that the humidity of the material is within a reasonable granulation range. In order for the machine to be efficient, the high-yield work must be debugged in every step of the work.