The current situation and development trend of jaw crushers
With the development of modern science and technology, the rapid development of crushers is also the general trend, because its demand is constantly increasing and improving in terms of quantity and quality, especially for those small and medium-sized cement glass The development of the industry is even more significant. Among the required crushers, the jaw crusher is the most common and the most widely used. Among small and medium-sized crushers, it has the largest share and production volume. This is the most common type of crushing operation in various industries. device of. There are about hundreds of types of jaw crushers, but in terms of their motion properties, they do not exceed simple pendulum and compound pendulum.
Jaw crushing appeared in the United States in 2000, and has developed particularly rapidly in recent years. Various new products continue to emerge, such as negative support jaw crusher, type crusher, inertia impact jaw crusher, zero suspension single elbow Plate jaw crusher, etc. These products widely adopt modern cutting-edge technology, such as the computer-optimized design of the cavity, hydraulic control technology, and the sliding bearing is changed to a rolling bearing. Hydraulic bearing and overload protection reduce the eccentricity and increase the swing frequency to achieve fine crushing. The lamination crushing principle is used to improve the product particle size to achieve large crushing. Ratio, change the suspension and support methods to change the movement state of the movable jaw to improve capacity and reduce wear, etc. With a large number of literature reports and the rapid development of foreign crushers, the domestic crusher industry is also developing rapidly under the climate of more crushing and less grinding, but it mainly focuses on the improvement and improvement of old crushers, and carries out various parameters of the crushers. The optimized design takes advantage of the rapid development of computers to modernize the old jaw crusher, and its technical performance, such as processing capacity and product particle size, can be greatly improved. Although the variety and quality of products have increased and improved in recent years, and many products have won national, ministerial, and provincial titles, overall, compared with similar foreign products, they still have fewer varieties, lower levels, and lower quality. Poor performance, short lifespan, and low economic benefits, only at the level of the late 1990s and early 1900s.
Current status and development of jaw crusher Jaw crusher is a kind of intermittent crusher. It has the advantages of simple structure, low height, large range of specifications, strong applicability and easy manufacturing. According to the analysis of relevant experts, at present, its main Problems include outdated structure (old foreign products are used), low performance (compared with similar foreign products), unreasonable structure (especially those imitations), low technical benefits (large dynamic engagement angle), etc. The progress of domestic jaw crusher research and trial production is slow, and the development cycle of new products is long and the results are slow. Jaw crushers in production and market are mainly produced in Japan, and their main structure is still that of the Xinjiang-type crusher in the 1960s. Due to the worldwide energy shortage in the 1990s, there are urgent requirements for energy conservation in crushing projects. More crushing and less grinding are widely accepted. Various new high-efficiency large crushing ratio crushers have been launched one after another, such as new high-efficiency negative support jaw crushers and special jaw crushers. , inertia jaw crusher, etc. Compared with the old compound pendulum jaw crusher, the main feature of the new high-efficiency compound pendulum jaw crusher that has recently appeared at home and abroad is the use of advanced mechanisms, such as the new design idea of negative support toggle plate. Adopt high, deep and small mesh angle curve non-clogging cavity type. Use motion parameters with high swing rate. Adopt welded frame structure to reduce the weight of the equipment. It adopts automatic lubrication device and automatic control technology such as accident alarm.
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