Jaw crusher is one of the most widely used equipment in crushing and grinding industry. In this issue, Xiaobian will reveal the forerunner of the grinding process – jaw crusher – from the mainstream series of products in the market, their respective advantages and disadvantages, and the main manufacturers.
Product Introduction:
In 1858, the simple pendulum crusher was invented, so far the jaw crusher has more than 150 years of history. Since the early 1950s, China began to imitate the production of compound pendulum jaw crusher, in order to improve the performance of the jaw crusher and improve its work efficiency, a variety of special jaw crusher has been developed at home and abroad, but it is still widely used in the traditional compound pendulum jaw crusher.
Jaw crusher is widely used in mining, smelting, building materials, roads, railways, water conservancy and chemical industry and many other fields, in the complex crushing process in the “first knife” position, crushing compressive strength does not exceed 320 mpa of various materials, mainly composed of six parts: Frame, transmission part (motor, flywheel, pulley, eccentric shaft), crushing part (jaw bed, moving jaw plate, fixed jaw plate), safety device (elbow plate, spring tie rod part), adjustment part, centralized lubrication device.
Product Analysis:
In order to improve the crushing efficiency of jaw crusher, the research and development and improvement of jaw breaking have never been stopped at home and abroad. After more than 60 years of improvement and technology introduction, the current domestic market mainstream jaw crusher PE, PEW and jaw crusher integrated machine (motor and crusher integrated, hereinafter referred to as integrated machine) and other products.
Among the three series of jaw breaks, PE series jaw breaks were first developed and are widely used in the domestic market because of their simple structure and relatively low price. PEW series jaw break is improved on the basis of PE series, in the equipment structure, adjustment device, and protection device has made relatively large changes, so that the crushing efficiency and crushing ratio of jaw break, compared with PE series has been greatly improved. The all-in-one machine belongs to a new generation of jaw breaking products, and its equipment structure, use function and production efficiency and other indicators reflect the modern advanced technology level. Compared with PE and PEW, the biggest change in the all-in-one machine is to place the motor in the body.
Product market:
The technique of jaw breaking is relatively simple and the threshold is low. Therefore, the domestic broken jaw products are uneven, and users are difficult to distinguish. At present, the jaw of the domestic market presents two completely different products, one is the product produced by small manufacturers, such products are characterized by small equipment, backward technology, the body is mostly based on welding, and the price is cheap. Taking stress relief as an example, stress relief needs to be placed in the open air for more than 1 month in order to reduce the stress in the casting. Most small manufacturers are limited by capital turnover and production capacity, and have orders to the casting factory to buy parts and return to production, ignoring this process. Stress non-elimination easily leads to the risk of fracture due to the instability of the internal stress of the casting. The other is the products produced by leading enterprises in the industry, such products are mainly based on the production of large equipment, advanced production technology, good material selection and configuration, and standardized production process, but the price is high.
Summary:
As the “leading big brother” of the crushing section, the jaw crusher can almost be seen in both the crushing and grinding production line and the sand processing production line. At present, although PE jaw breaking is still the most widely used series, with the development of technology and the increase in time cost, the advantages of the convenience of replacing parts, high crushing efficiency and safety will be self-evident.
Post time: Oct-29-2024