To prevent fertilizer mixer machine clogging, you can take the following steps:

1. Optimize Material Properties: Ensure the fertilizer has the appropriate moisture content and avoid using damp or clumping fertilizer. Wet fertilizer tends to clump, leading to clogging. Screen the fertilizer before mixing to remove large particles and impurities such as gravel and straw, which can easily get stuck at the discharging port.

2. Equipment Maintenance and Adjustment: Clean the mixer's hopper, agitator, and discharging port after each use to prevent fertilizer residue and crystallization. Regularly check the agitator blades and drive belt for wear and replace any wearing parts promptly. Ensure the agitator speed is appropriate to effectively break up lumps.

3. Operating Instructions: Strictly load the machine according to the capacity indicated in the manual and avoid overloading. Pour the material evenly during loading to prevent accumulation. Adjust the fertilizer application rate based on the material's properties to ensure that the discharging port flow rate matches the mixing speed. Allow the machine to idle for 1-2 minutes before starting to confirm that the agitator and conveyor are functioning properly before loading.
4. Design and Technical Improvements: Install a spiral feed roller or arch-breaking device at the mixer's outlet to help guide the material and prevent blockages. Install stainless steel slides or apply an anti-stick coating to the inner wall of the hopper to reduce friction and prevent material adhesion.

5. Daily Monitoring and Prevention: Utilize modern sensing technology and data analysis to monitor temperature, pressure, and other parameters within the mixer in real time to prevent blockages. Establish a comprehensive organic fertilizer equipment maintenance system and conduct regular comprehensive inspections and maintenance of the mixer to ensure it is always in good operating condition.

These measures can effectively prevent blockages in fertilizer mixers, improve production efficiency, and increase equipment lifespan.