As the core equipment of organic fertilizer production line, the unique principle of organic fertilizer granulator lays the foundation for efficient granulation.
The principle of the disc type organic fertilizer granulator is built on a simple yet sophisticated mechanical foundation. The disc rotates at a stable angular velocity, and when powdered raw materials are placed on it, centrifugal force drives the raw materials to spread towards the edge of the disc, while frictional force gives the raw materials the power to move upward along the inner wall of the disc. During the cyclic movement of raw materials, the intervention of binders becomes a key factor in particle formation. The adhesive is evenly sprayed onto the raw material through the nozzle, and its molecules attract the atoms or molecules on the surface of the raw material particles, forming physical or chemical connections, causing the tiny raw material particles to begin to aggregate. As the disk continues to rotate, these aggregates continuously roll and collide, adsorbing surrounding materials and gradually increasing like snowballs. Operators can precisely control the movement trajectory and dwell time of raw materials on the disc by adjusting the rotation speed and inclination angle of the disc, thereby achieving precise control of particle size and shape.
The rotary drum organic fertilizer granulator utilizes the rotation of the rotary drum and the complex material movement inside to achieve efficient granulation. The drum rotates uniformly under the drive of the transmission device, and the internal plate continuously lifts the raw materials, forming a complex parabolic motion trajectory inside the drum. During this process, the adhesive is evenly sprayed in a mist form onto the moving raw materials. After the tiny droplets of the adhesive come into contact with the raw material particles, they quickly spread and solidify, bonding adjacent particles together. As the drum rotates, these bonded particles gradually grow through continuous collision and friction, ultimately forming fertilizer particles that meet the requirements. The rotational speed, length, and internal plate design of the drum jointly affect the residence time and motion state of the raw materials in the drum, thereby determining the efficiency and quality of granulation.
The principle of the squeeze type organic fertilizer granulator focuses on the powerful mechanical squeezing force. The raw materials are pushed by the feeding device and enter the extrusion system composed of screws or plungers. In the extrusion chamber, the raw material is subjected to continuously increasing pressure. When the pressure exceeds the yield strength of the raw material, it is forced to pass through a mold with a specific aperture. At the moment of passing through the mold, the raw material is shaped into a cylindrical body with the same aperture as the mold. Subsequently, the high-speed rotating cutter cuts the cylindrical body to a predetermined length, forming uniformly sized fertilizer particles. This granulation method does not require additional binders and can maximize the retention of the original nutrients of the fertilizer. At the same time, by adjusting the extrusion pressure and cutting speed of the cutter, effective control of particle size and strength can be achieved.
The organic fertilizer granulator achieves efficient and precise granulation process through these unique principles, providing solid technical support for the development of the organic fertilizer industry.
