As the core equipment in an organic fertilizer produciton line, organic fertilizer granualtors can cause blockages that directly interrupt production and reduce efficiency. Blockages require a systematic investigation of the material, equipment, and operation to accurately resolve them.

Improper material properties are the primary cause of blockages. First, improper control of the material's moisture content. If the moisture content is too high (over 30%), the material easily adheres to the inner wall of the granulator's die hole and the surface of the roller, gradually accumulating and causing blockage. If the moisture content is too low (below 15%), the material has poor fluidity and is difficult to extrude through the die hole, which also causes blockage. Second, uneven material particle size. If large pieces of unpulverized straw or impurities are mixed in, they can become stuck at the die hole entrance, hindering the passage of subsequent materials. Especially when the fiber content in the material is too high and not fully chopped, the fibers can easily become entangled on the roller, further exacerbating blockages.

Improper equipment parameter settings can also easily cause blockages. The pelletizer's die hole size doesn't match the material's characteristics. For example, if the die hole diameter is too small and the material particles are too large or viscous, this can prevent the material from being extruded smoothly.

Improper operation and lack of maintenance are also major causes. If the operator feeds the material too quickly, exceeding the pelletizer's processing capacity, excessive material accumulation inside the machine can easily cause blockage. If the die holes and pressure rollers are not cleaned regularly, residual material will harden and clump after long-term use, narrowing the die hole channel. Furthermore, insufficient lubrication of the organic fertilizer equipment, resulting in poor pressure roller rotation, or a worn, uneven inner wall of the die hole, can increase resistance to material flow and ultimately cause blockage.