Fertilizer screening machines in NPK fertilizer production lines are responsible for screening qualified granules. During processing, common problems include screen clogging, uneven screening, and abnormal noises. Timely resolution and proper maintenance ensure uniform particle size in the finished product and improve production efficiency.
Common Faults and Solutions for Fertilizer Screening Machines:
- Screen clogging: Caused by damp granules or excessive feed. After stopping the machine, clean the screen surface and any residual material within the apertures to reduce moisture content, control the feed rate, and replace the screen if necessary.
- Uneven screening: Often caused by loose screens or abnormal vibration motor parameters. Tighten the screen fixing bolts and calibrate the vibration motor speed and amplitude.
- Abnormal noises: Caused by insufficient bearing lubrication or loose eccentric blocks. Add lubricating oil and tighten the eccentric blocks and motor bolts.
Key Points for Post-Maintenance of Fertilizer Screening Machines: Clean the screens and the inside of the equipment daily after shutdown, and check for screen wear and looseness. Check the lubrication status of the vibratory motor bearings weekly, calibrate the equipment vibration parameters monthly, and overhaul the motor and transmission components quarterly. When the machine is to be shut down for a long period of time, disassemble the screen and clean it thoroughly. Apply anti-rust oil to the surface of the equipment and store it in a dry and ventilated place to avoid moisture and corrosion.