The vertical grinder is a grinding equipment with its own patented technology, which has been gradually accepted by the domestic cement, power, and chemical industries due to the continuous increase in research and development investment in the machinery manufacturing industry, changes in industrial policies, and expansion of production scale in recent years. Domestic grinding machine production enterprises have learned from successful foreign experience, carried out major technological reforms, and launched it. It integrates crushing, drying, grinding, and graded conveying, with high production efficiency. It can grind block, particle, and powder raw materials into the required powder materials. Widely used in industries such as cement, electricity, metallurgy, chemical, non-metallic minerals, etc.
Working Principle:
The electric motor drives the grinding disc to rotate through the reducer, and the material falls from the discharge port to the center of the grinding disc. Under the action of centrifugal force, it moves towards the edge of the grinding disc and is crushed by the grinding roller. The crushed material overflows from the edge of the grinding disc and is carried by the high-speed upward hot air flow from the nozzle ring (air ring) to the powder selector integrated with the vertical mill. The coarse powder is sorted by the separator and returned to the grinding disc for re grinding; Fine powder flows out of the mill with the air and is collected in the dust collection device of the system, which is the product. Coarse particulate materials that are not carried by the hot air flow and metal parts that accidentally enter sink from the air ring, are scraped out by the scraper plate, and then fed into the mill for further grinding through the external circulation bucket elevator.
Technical advantages:
1. The vertical mill adopts the crushing mechanism of material layer compaction, friction, and impact, which has the advantages of high efficiency, large energy-saving range (20-30% energy-saving compared to ball mills), low noise, and small footprint.
2. The material crushing process has a short time, low repeated grinding rate, uniform particle size distribution, stable chemical composition, and high product quality.
3. The particles in the material bed self pulverize, avoiding direct contact between the grinding roller and the grinding disc, avoiding machine vibration, reducing equipment wear, and ensuring the whiteness and purity of the finished material
4. The pressure adjustment method of the grinding roller is flexible air spring pressure compression, which can contract freely without any rebound time difference, and the pressure force is uniform and long-lasting, resulting in a significant increase in production capacity; Flexible combination is more shock resistant and pressure resistant than traditional pressurization systems, and can achieve no-load start-up.
5. It integrates multiple functions such as crushing, grinding, drying, and grading, with a wide range of applications. A single grinding machine can be used for grinding various materials.
6. To prevent excessive material permeability during grinding operations, the grinding machine is equipped with an external mixing and spraying device to facilitate the establishment of the grinding layer in the material bed and increase production.
7. By flipping the boom through the oil cylinder, the grinding roller assembly can be flipped out to the outside of the grinder for easy maintenance; The grinding roller sleeve and grinding roller assembly are separated by a tapered sleeve tensioning structure, which improves maintenance convenience and operational economy.
8. The control system can implement on-site and remote automation, achieving unmanned operation.