1. Preparation: Ensure that the double roller press granulator is shut down and the power supply has been disconnected to ensure safe operation. Prepare the tools needed for adjustment, usually including a wrench or adjusting screwdriver.

2. Find the adjustment point: According to the design of the granulator, find the adjustment point or screw for adjusting the clearance of the extrusion roll. Usually these adjustment points are located at either end or side of the extrusion roll.

3. Adjustment method: Use a wrench or adjusting screwdriver to gradually rotate the adjusting screw and change the gap size of the extrusion roll. The adjustment should be careful, and each turn of the screw should be a small adjustment to avoid problems caused by too much or too little clearance.

4. Check the gap: After the adjustment, use a special gap adjustment tool to measure the gap of the extrusion roll. The gap size is usually determined according to the specific pelletizing requirements. Ensure that the gap between the two extrusion rollers is equal in size to ensure that the material can pass evenly through the granulator.

5. Test run: After the adjustment, restart the organic fertilizer equipment for test run. Observe the granulation effect and yield of the particles and adjust the necessary parameters to ensure that the desired granulation effect is achieved.

6. Regular inspection and maintenance: every once in a while, regularly check the gap of the extrusion roll and adjust it as needed. This can ensure long-term stable production efficiency and quality of organic fertilizer production lines.