1. Material Size Too Large
The pressing chamber has limited space, and large or fluffy raw materials may cause blockages.
Solution: Install screening equipment at the front end or use finer mesh screens.
2. Uneven Feeding Speed
An inconsistent or excessive feeding volume can block the feeding port, leading to pellet machine issues.
Solution: Start feeding at low speed, gradually increasing to a steady, uniform speed that matches the equipment's rated capacity.
3. Material Accumulation in the Pellet Machine
After production, residue accumulation may solidify into hard blocks, obstructing material flow.
Solution: Regularly clean the interior and remove any residual material.
4. New Mold Grinding Issues
New molds may have rough holes, oxidation, or rust that increase friction, hindering pellet ejection and causing blockages.
Solution: Grind the mold for about 20 minutes before starting production to ensure smooth operation.
5. Low Motor Voltage
Insufficient voltage can reduce the motor's power, leading to material blockages in the compression chamber.
Solution: Install a stable power distribution room or use a transformer to ensure proper voltage levels.
6. Blocked Ring Mold
Foreign impurities, such as metal or stone, can clog the mold holes, preventing material flow.
Solution: Shut down the machine, clean out the mold, and polish the discharge hole carefully using professional tools.
7. Bearing Damage
Faulty bearings can prevent pressing parts from functioning, causing material blockages in the compression chamber.
Solution: Replace damaged bearings and maintain them regularly with quality oil.
8. Incorrect Material Moisture Levels
Excessive or insufficient moisture content in the material can cause the die hole to clog.
Solution: Use a dryer to maintain moisture levels between 10%-15% for optimal pellet formation.
9. Loose Pressure Roller
A loose pressure roller increases the gap between the roller and mold, reducing pressure and leading to uneven material distribution and blockages.
Solution: Stop the machine and adjust the gap between the pressure rollers.
10. Scraper Issues
Incorrect scraper angles or thickness can cause poor material flow and blockages.
Solution: Ensure the scraper is about 2 cm away from the ring die, and replace or adjust the scraper if necessary.
11. Operator Error
Lack of knowledge about the pellet machine can cause malfunctions or clogging.
Solution: Train operators to understand the pellet machine’s operation, ensuring consistent and efficient production.
12. Inappropriate Mold Roll Gap
A gap that's too wide between the ring die and pressure roller can lead to uneven material distribution and blockages.
Solution: Adjust the gap during production to ensure a smooth material flow and prevent blockages.
13. Excessive Compression Ratio
A high compression ratio may cause material to clog the abrasive tool and result in poor pellet quality.
Solution: Use a mold with a compression ratio suitable for the material being processed.
14. Severe Wear of the Ring Molding Roller
Worn pressure rollers and ring die bell mouths may fail to adequately feed material, leading to blockages.
Solution: Regularly inspect and replace worn components to maintain proper function and prevent material blockages.
