A cage crusher is the core equipment for crushing raw materials in a fertilizer production line. Its safe and stable operation directly impacts the smoothness of subsequent processes. Understanding these precautions can extend equipment life, improve efficiency, and avoid safety accidents.
Pre-startup inspections are essential. Ensure that there are no residual materials or metal impurities in the crushing chamber to prevent foreign matter from getting stuck and damaging the blades during startup. Check the gap between the cage rotor and the screen; a gap of 3-5 mm is generally recommended. A gap that is too large will result in uneven crushing, while a gap that is too small may cause friction and noise. Also, ensure that the motor connections are secure, the drive belt is properly tightened, and the protective cover is properly installed to avoid safety hazards during operation.
The operation process must be standardized and controlled. Material feed should be uniform and continuous to avoid overloading the equipment by adding too much at once. The feed rate can be adjusted using the feed valve to ensure dynamic balance within the crushing chamber. When processing high-moisture materials, air them out in advance to a moisture content below 15% to prevent sticking to the cage bars and causing blockage. If the feed or discharge port is blocked, stop the machine immediately for cleaning. Never insert hands or tools into the crushing chamber while the machine is operating. Closely monitor the machine during operation. Normal operation should be free of excessive vibration or unusual noise. Any unusual noise may indicate rotor imbalance or bearing wear, requiring shutdown for inspection and replacement. Bearing temperatures should be kept below 60°C. If overheating occurs, shut down the machine for cooling to prevent motor burnout. Additionally, regularly check the particle size of the crushed material. If it exceeds the standard, adjust the screen size or inspect blade wear.
Daily maintenance ensures efficient operation. Clean the crushing chamber after each shift to prevent moisture and caking. Check blade wear weekly and polish or replace any blunt edges to ensure efficient crushing. Lubricate the bearings monthly to maintain smooth rotation. Before long-term storage, thoroughly clean the machine, apply rust-proof treatment, and store in a dry, well-ventilated area.
Following these precautions will ensure safe and stable operation of the cage crusher, improve crushing quality and efficiency, and lay the foundation for smooth operation of the fertilizer production line.