Overview of jaw crusher

January 21 14:11:37, 2024

After more than 100 years of practice and continuous improvement, the jaw crusher has no breakthrough in structure, but because of its simple structure, reliable operation, easy production, convenient maintenance, low equipment and production cost, It is still widely used in mineral processing , building materials, silicates and chemical industry production until now. It is generally used for coarse or medium crushing of hard or medium hard ore in the processing of mineral processing industry, and is sometimes used for fine crushing in other industrial sectors and small mine production.

The production of jaw crushers in China is only a few decades old. In the early days of the founding of the People's Republic of China, due to the weak foundation of the machinery industry, the imitation of small and medium-sized jaw crushers was dominant. In the late 1950s, due to the development needs of China's mining and building materials industry, the design and manufacture of large double-knuckle jaw crushers was promoted. In the 1970s, the production of jaw crushers in China has begun to take shape, and the specifications and spectrum are gradually complete, which can basically meet the needs of national economic construction. In the 1980s, due to the adoption of new technologies, China’s smashing The production of the machine has reached a higher level of water, which not only meets domestic needs, but also begins to be exported to Southeast Asia. However, compared with the advanced level in foreign countries, the structure and broken cavity shape of the domestic jaw crusher are still relatively backward. In the past 10 years, with the continuous innovation and transformation of jaw crushers, the increase in variety specifications has gradually approached the advanced level of foreign countries.

At present, the most widely used jaw crusher produced in China has two types: a crank-type double rocker mechanism jaw crusher with simple swinging motion - a simple pendulum type jaw crusher (below a); A crank-rocker mechanism jaw crusher with complex swings - a compound pendulum jaw crusher (b). The former is mostly made of large or medium-sized, and its crushing ratio is 3-6; the latter is generally made of small and medium-sized, and its crushing ratio can reach 10. With the development of industrial technology, the compound pendulum jaw crusher has been developed to a large scale.

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