The cow manure organic fertilizer granulator is mainly used to transform processed cow manure and other organic waste into neat and uniform granular fertilizers. Its working principle involves multiple physical processes such as material mixing, compression, and shaping. Different types and designs of granulators may vary, but the basic principles are similar. The following is an overview of the working principle of a general cow manure organic fertilizer granulator:
The drum granulator is one of the most common equipment for granulating cow manure organic fertilizer, and its working principle is as follows:
Material entry: Pre treated cow manure and other organic materials (such as crushed, mixed, and moderately moist) are transported to the inside of the drum.
Rolling and mixing: The special design inside the drum, such as the tilt angle and internal cutting or spiral blades, allows the material to continuously roll and mix during rotation.
Adhesive and Agglomeration: Friction and slight pressure between wet materials cause small particles to adhere to each other, forming spherical or pebble shaped small aggregates.
Forming and maturity: With the passage of time and the continuous rotation of the drum, small particles continue to adsorb loose materials around them, gradually increasing until they reach the desired diameter.
Discharge and screening: The formed particles are discharged from one end of the drum, and larger particles are reintroduced into the drum for further grinding, while smaller particles are screened to ensure uniform particle size.
The ring mold granulator is particularly suitable for producing hard or high-density organic fertilizer particles, and its working principle is as follows:
High pressure compression: The material is forcibly fed between the annular mold and the pressure roller. Due to the tight fit between the high-speed rotating pressure roller and the stationary annular mold, a huge extrusion force is generated.
Plastic deformation: Under high pressure, the material is forced to pass through the smaller pores of the mold, and the air in the material is expelled. The material undergoes plastic deformation, forming cylindrical particles.
Cutting and Forming: Once the particles pass through the mold, they are cut into the required length by the cutting blade and then fall into the cooling device to reduce the stress caused by thermal expansion and contraction and prevent particle breakage.
Squeezing granulator
Squeezing granulator is suitable for materials with low moisture content and not easy to agglomerate. Its principle is similar to that of ring die granulator, but its design is different. It mainly relies on screws or pistons to push the material through the mold and achieve molding.
The above three types of granulators each have their own characteristics, and the choice depends on the characteristics of the raw materials, the expected particle shape, and production capacity. The design of the cow manure organic fertilizer granulator aims to optimize granulation efficiency while preserving the nutritional components of organic materials as much as possible, providing high-quality fertilizers for agricultural production.