Common malfunctions of fertilizer mixer machines during use are related to their structure and working environment, mainly falling into the following categories:

1. Stirring shaft jamming or abnormal noise: This is often caused by hard objects such as stones or metal mixed in the raw materials, which can jam the stirring blades or wear the shaft sleeve, resulting in obstructed rotation. Long-term use with insufficient lubrication or worn bearings can also cause abnormal noise, and in severe cases, may cause shaft deformation.

2. Uneven mixing: If the blade angle is misaligned (e.g., asymmetrical), or some blades are worn or broken, it will lead to insufficient mixing of materials. Excessive feeding speed exceeding the equipment's load capacity will also cause uneven material distribution within the machine, resulting in localized accumulation.

3. Motor overheating or tripping: High moisture content or severe agglomeration of the raw materials will increase stirring resistance, leading to motor overload. Dust clogging the motor's heat dissipation vents, or aging or poor contact in the wiring, can also cause overheating, triggering the protection mechanism to trip.

4. Material leakage or seal failure: Aging or damage to the gasket at the connection between the feed inlet and the machine body can cause material to leak from the gaps. Wear of the mechanical seals at both ends of the mixing shaft can lead to lubricant leakage or material seeping into the bearing housing, contaminating the lubricant.

5. Transmission system failure: Belt-driven organic fertilizer equipment is prone to belt slippage (due to insufficient tension or aging), resulting in a decrease in mixing speed. Chain-driven systems may experience chain loosening or sprocket wear causing tooth skipping, affecting power transmission.

Regular maintenance, including regularly cleaning foreign objects, checking the condition of the blades, and promptly replacing seals and lubrication components, can effectively reduce the occurrence of these types of failures.