The Function of the Scraper in an Organic Fertilizer Disc Granulator
The scraper is a key auxiliary component of an organic fertilizer disc granulator machine, directly affecting the granulation effect, the operation of the bio-organic fertilizer production line, and its production efficiency. It primarily performs three core functions: cleaning, guiding, and controlling material.
First, it cleans the disc surface to prevent material from sticking and clumping. Organic fertilizer raw materials have high moisture content and strong viscosity, easily adhering to the bottom and walls of the disc during operation. The scraper rotates closely against the disc surface, continuously scraping away the adhering material, preventing material accumulation and hardening, ensuring a flat disc surface, and reducing problems such as uneven particle size and poor forming caused by disc sticking. It also reduces equipment load and abnormal wear.
Second, it guides the material, directing tumbling and agglomeration. As the disc rotates, the scraper can divide the material layer and break up excessively large clumps, keeping the material in a loose state. Simultaneously, by using the tilt angle to change the material’s trajectory, it guides the material to tumble, collide, and agglomerate in a regular manner, ensuring round and full particles and improving the overall pelleting rate.
Furthermore, it stabilizes the material layer and controls particle size. The scraper controls the material layer thickness within the disc, maintaining a stable granulation environment. By adjusting its position and angle, the material residence time can be influenced, indirectly regulating particle size and preventing the formation of large balls or fine powder. Side auxiliary scrapers also clean accumulated material at the disc retainer ring, ensuring smooth material flow.
Furthermore, a properly functioning scraper reduces equipment jamming and abnormal noise, extending the lifespan of the disc and the entire machine. Daily adjustments to the scraper gap and angle based on raw material moisture content and particle size requirements are necessary to maintain their effectiveness and ensure stable operation of the granulation process.
