2026/06/05
The power system of the organic fertilizer disc granulator consists of three parts: the main turntable drive, auxiliary spraying, and a small scraper motor. The core power is driven entirely by the main motor. The main unit typically uses a national standard three-phase asynchronous motor, with power matched to the disc diameter. A 2.5-meter disc usually uses an 11kW motor, and a 3-meter disc uses a 15kW motor. The motor is connected to a reducer via a V-belt. The reducer's output shaft pulls a large gear at the bottom of the disc, causing the disc to rotate at a uniform speed. The material is rolled into granules by the tilt angle of the disc.
The reducer is mostly a gear reduction structure, used to reduce speed and increase torque, offsetting the resistance from the rolling material and preventing the motor from overheating due to overload. Fixed scrapers are installed on the sides of the disc. In small models, the scrapers scrape material automatically by the disc's rotation. In medium and large models, a separate small motor and reducer drive are added to actively scrape off material adhering to the disc wall, preventing material accumulation and clumping that affects granulation. The system is equipped with a spray water supply device. Small-scale systems use electric water pumps for water supply, while high-power disc granulation production lines utilize variable frequency water pumps. A small motor controls the water intake, precisely adjusting the material's moisture content.
The machine is simple to operate and maintain. Most malfunctions are due to belt aging and slippage, or insufficient lubrication and overheating of the reducer. High-viscosity raw materials and large feed volumes increase the load, easily causing motor overload tripping. Regular maintenance includes tightening the motor base bolts, adding reducer lubricant, and checking the V-belt tension. Compared to extrusion granulation, disc granulation relies on rotation and rolling, resulting in stable instantaneous load and uniform motor power consumption. With proper moisture control, motor overload damage is rare.
