The organic fertilizer granulator plays a crucial role in organic fertilizer production, and its unique working principle is the key to achieving efficient granulation.

The working principle of the disc granulator is full of the clever combination of mechanics and chemistry. The disc rotates steadily under the drive of the motor, and the powdered organic fertilizer raw materials are evenly distributed onto the disc. At this point, centrifugal force causes the raw material to move towards the edge of the disc, while frictional force drives the raw material to climb up along the inner wall of the disc. During the process of raw material movement, the nozzle sprays adhesive at the appropriate time. The adhesive molecules interact with the surface of the raw material particles to form a viscous connection, causing adjacent raw material particles to begin to aggregate. As the disk continues to rotate, these small particles continuously roll and collide, adsorbing new raw materials and gradually growing into larger particles. By adjusting the disc speed, the movement speed and residence time of the raw material on the disc can be changed, thereby controlling the particle size; Adjusting the inclination angle of the disc can affect the movement trajectory of the raw material on the disc, and have an effect on the shaping and uniformity of the particles.

The rotary drum granulator relies on the rotation and internal structure of the rotary drum to achieve granulation. When the drum rotates, the internal plate lifts the raw materials, forming a dispersed material flow in the air. At the same time, the binder is evenly sprayed in the material flow through the spray device. Under the combined action of gravity and drum rotation, raw material particles collide and bond with each other during the falling process, gradually forming particles. The diameter, length, and rotational speed of the drum directly affect the residence time and motion state of the raw materials inside the drum, thereby determining the size, shape, and strength of the particles.

Squeezing granulator uses mechanical extrusion force to produce particles. After entering the granulator, the raw materials are pushed by components such as screws or plungers and pass through molds with specific shapes and apertures. Under the squeezing force, the raw material is forced to pass through the mold hole, forming a columnar structure with the same diameter as the mold hole. Subsequently, the cutter cuts the columnar material to the set length to obtain the desired fertilizer particles. This granulation method has strong adaptability to raw materials and can effectively maintain the nutrient content of fertilizers, as there is no need to add excessive binders.

Different types of organic fertilizer granulators, although operating on different principles, are all designed to convert powdered organic fertilizer raw materials into granular products that are easy to store, transport, and use, meeting the needs of agricultural production.