A crusher is a device that uses a certain mechanism to break large pieces of material into small pieces using one or more force methods. It is a type of general-purpose device widely used in industrial production. According to its working principle, process characteristics and structure, the crusher can be divided into swing crusher (such as jaw crusher), rotary pendulum crusher (such as gyratory crusher, cone crusher, double-cavity gyratory crusher, etc.), Roller crushers (such as roll crushers, high-pressure roll crushers) and impact crushers (such as hammer crushers, impact crushers, and crusher crushers) are several types.
The theory of "smashing and grinding" is an important symbol of the progress in crushing engineering energy-saving technologies. Chinese scholar Hong Li (Wang Hongxun) wrote in 1959 that the academic thought of reducing the size of broken products, improving the processing capacity of ball mills, and reducing the energy consumption of grinding operations. Jaw crushers are used as a wide range of crushing machinery. As early as 1858, Ei Whitney Black of the United States first proposed the original model of a jaw crusher and obtained a patent. In 1870, a Taiwanese jaw crusher was introduced. Its appearance caused the crushing of rock minerals to enter the age of mechanical crushing. Jaw crusher has simple structure, easy manufacture, reliable operation, convenient maintenance, small volume and height, and has been used for nearly 140 years. It has been widely used in metallurgy, mining, building materials, chemical industry, coal and other industries. The long-term industrial production practice and the development of research work make its structure continue to improve. Performance parameters (running parameters and structural parameters) have been continuously improved and have reached a high level of perfection.