Livestock Feed Machine Knowleagde

The ring die is the key wearing part of the granulator. The correctness of the installation, use and maintenance of the ring die plays an important role in improving the efficiency of the granulator and reducing the consumption of wearing parts.

The correct installation of the ring die is as follows. Make the following requirements:
In normal operation, the ring die, the hoop and the drive wheel are fastened by the hoop bolt connection without any relative movement. However, in actual use, due to the wear of the hoop and the mounting wheel and the ring mold, or the loosening of the hoop bolt, the relative movement may be caused, especially the ring mold is vibrated due to the strong pressing and collision of the pressure roller during operation. In severe cases, the ring mold is cracked and the inner cone hole is worn, which further causes the wear of the hoop and the transmission wheel to be intensified, directly affecting the production efficiency and even stopping the production.

The methods and operation steps to prevent the above problems are as follows:
1. Check the wear of the ring mold liner every week. Due to the different processing equipment and process technology level of each manufacturer and the difference in processing precision between the ring mold and the transmission wheel, it is preferred to select the original ring mold ring and other accessories when selecting the ring mold gasket to avoid the ring mold and The fitting clearance of the circumferential mating surface of the ring and the transmission wheel is too large, which causes the ring mold to sag naturally, which causes the adverse effects such as impacting the pressure roller when the ring mold rotates.
2. Check the relevant position in the figure below each time you install or adjust the hoop bolts, and make sure there is a gap between each hoop and the three positions shown in the figure.
3. After 30 minutes of normal operation, stop tightening the hoop bolts.
4. Check the position of the press roller after each press roll assembly or ring die installation to ensure that the press roller is between the two process grooves of the ring die, otherwise adjustment pad adjustment must be added (the adjustment pad is mounted on the press roller shaft and Between the platen or the spindle).
5. After the pressure roller assembly is installed as a whole, check the axial clearance between the pressure roller and the ring die. The axial clearance is not more than 0.3mm, otherwise the adjustment pad is adjusted.
6.can not use inferior ring mold, the inner wall of the ring die working surface should be ≤ 0.20mm, to ensure uniform gap of the die roll