1、 Preparation before startup
1. Equipment inspection: Confirm that the pressure roller, ring mold, guide blade and other components are intact and free of wear, clean the residual materials inside the equipment, adjust the gap between the pressure roller and the ring mold to a suitable state (it is better to stop the pressure roller when it is idling).
2. Material handling: Ensure that the raw materials are dry and free of impurities. For viscous materials, check the wear of the scraper to avoid blockage.
3. Parameter preset: preset granulation pressure, feeding speed, and other parameters based on material properties such as viscosity and particle size.
2、 Startup and Debugging
1. System startup:
Start the equipment in reverse order: first turn on the main motor of the granulator (without steam), then start the conditioner and feeder.
Industrial equipment needs to be aged in a dry powder extrusion ring mold, and then input into a cooler after the particle color is normal.
2. Pressure debugging:
After closing the cabin door, operate the oil pressure valve: tighten the valve clockwise to apply pressure, observe the pressure gauge to the range of 2-3 Pa, lock the pressure, and start feeding.
When there is too much material, the pressure gauge jumping is a normal phenomenon and the pressure value needs to be adjusted in real time.
3. Steam and load control:
Add steam in stages: start with a small amount of steam and run at 50% load, gradually increase the feeding speed to full load (main current reaches 90% of rated current).
Hand inspection and tempering powder: the best state is when it forms clusters and disperses after light pressure. If it is too sticky, reduce the amount of steam, and if it is too loose, increase the amount of steam.
3、 Granulation process monitoring
1. Feed control: evenly feed to avoid blockage, monitor the tablet pressing status and particle forming effect through the observation window.
2. Exception handling:
The significant fluctuation of the ammeter indicates system instability and requires parameter adjustment or component inspection.
Abnormal wear of the pressure roller will produce colored particles, and the machine needs to be stopped for replacement.
4、 Shutdown and maintenance
1. Unloading and cleaning materials:
Before stopping, turn the pressure relief valve counterclockwise to release pressure and clean any remaining particles.
Long term idle requires pressure relief maintenance to avoid continuous stress on components.
2. Equipment maintenance: Regularly grind the ring mold (non stainless steel materials need to be mixed with clean bran and fine sand for 30 minutes), and check the wear of the guide blade.