The impact crusher in the sand and gravel system is a crushing machine that uses impact energy to crush materials. The crusher can handle various materials with a particle size of no more than 500 mm and a compressive strength of no more than 360 MPa. It has the characteristics of large crushing ratio, high crushing efficiency and convenient maintenance. The product is cubic, and it is an ideal processing equipment for aggregates for road surface and hydropower construction. Relying on a strong production team, which have won the trust of consumers around the world. Chaeng impact crusher is widely used in highway construction, water conservancy engineering and construction gravel processing with its excellent performance and good performance. Used for crushing various materials with side length not exceeding 500mm and compressive strength not exceeding 260Mpa. It has better applicability to granite, limestone, river pebble, etc.
Impact crusher belongs to mechanical equipment that uses impact energy to crush ore. Due to its large crushing rate, high efficiency, low energy consumption, regular product particle size, selective crushing, despite its late appearance, it has developed rapidly. At present, it has been widely used in the fine crushing of various ores in the industrial fields of building materials, coal, chemical industry, engineering and so on.
Due to the working principle of the impact crusher, the impact of the impact hammer and the impact of the counterattack are serious and difficult to solve, so it is rarely used for the crushing of rocks with medium hardness or above. However, with the rapid development of national engineering construction projects, such as highways, the requirements for pavement special stone are very strict. For example, the compressive strength of the product needs to be greater than 100 MPa, and the granular content of the particles needs to be less than 10%. Both jaw and cone crushers are difficult to meet these requirements. This forces people to switch to counterattack crushers. Therefore, under hard rock production conditions, the relationship between impact size of impact crusher and crusher structure shape, rotor speed, hammer wear and other factors was studied, which increased product output, reduced overgrinding, and improved equipment performance . Very important practical significance.
The impact speed of the impact crusher has a great influence on the product size, production capacity and blower wear. Generally, an increase in impact speed means an increase in the impact of the hammer, the counterattack force of the counterattack, and the collision force between materials. Therefore, the product size will be finer, the crushing ratio will increase, but the hammer wear and counterattack will also increase. The hammer wear has a great influence on the particle size of the product, and its particle size is roughly proportional to the amount of hammer wear. The particle size of the product does not entirely depend on the size of the discharge port. The reasonable size of the discharge port should be determined according to the degree of wear of the hammer and the particle size of the feed material.