With the rapid economic development in recent years, the rise of many industries, in this fierce competition, construction, metallurgy and other industrial industries are developing rapidly today, a variety of professional industry production equipment also came into being.

      With the development of the times, the crushing equipment in the mining industry has been rapidly upgraded and has become an indispensable equipment for each production line. Among them, the crusher used in the initial stage of the production line is the most important, which is directly related to the processing of subsequent materials. So what is the difference between the counterattack crusher and the jaw crusher? The following Dahua Heavy Industry will take you to learn more about these two types of crushing Equipment knowledge:

1. Purpose:

Jaw crusher is generally used for one-stage crushing. The material after discharge has to be crushed for the second time, such as cone crushing, counterattack, rolling breaking and other machine feeding equipment. The secondary crushing feed is generally very small. If the feed is large, jaw crushing must be used as the first stage of crushing. Counterattack crushers will generally crush marble and granite. Too hard materials are not suitable for counterattack crushers, which will increase the wear of vulnerable parts.

2. Range of crushed materials:

      The impact crusher is also called impact crusher. The finished product is cube, no tension, no crack, and the particle shape is good. It can crush all kinds of coarse, medium and fine materials (granite, limestone, concrete, etc.). Its compressive strength does not exceed 500MPA. Its emission particle size can be adjusted, and the crushing specifications are also diversified.

      Jaw crusher is referred to as jaw crusher. It is mainly used for medium-sized crushing of various ores and bulk materials. Its compressive strength is not more than 320Mpa. It can be divided into two types: coarse crushing and fine crushing. This series of products have complete specifications, and its feed particle size is 125mm/750mm, which is the first choice for crushing equipment.

3, working principle:

      When the impact crusher is working, driven by the motor, the rotor rotates at a high speed, and the material enters the area where the plate hammer acts, hits the rotor with the plate hammer, and then throws it back to the crushing cavity to break it again. The material is repeatedly broken into one or 2. three from large to small, and repeatedly broken in the counterattack crushing cavity until the material is broken to the required size and discharged from the outlet.

      When the jaw crusher is working, the motor drives the belt and the pulley to move the moving jaw up and down through the eccentric shaft. When the moving jaw rises, the angle between the toggle plate and the moving jaw becomes larger, so that The moving jaw is closer to the fixed jaw. At the same time, the material is crushed or shredded to achieve the purpose of crushing; when the moving jaw body is down, the angle between the elbow plate and the moving jaw becomes smaller. Under the action of the pull rod and the spring, the moving jaw leaves the fixed jaw, and the crushed material is discharged from the lower opening of the crushing chamber. With the continuous rotation of the motor, mass production is realized.

4. Performance characteristics

      The anti-impact crusher has the characteristics of large feed port, large crushing cavity, high material hardness, large particle size, less stone powder, etc., and can easily adjust the gap between the anti-impact plate and the plate hammer, effectively control the particle size, and the particle shape is good. Compact structure, strong mechanical rigidity, large rotor moment of inertia, high-chromium plate hammer, impact resistance, wear resistance, large impact force, convenient maintenance, economical and reliable; complete crushing functions, high productivity, low wear of mechanical parts, and high comprehensive benefits.

5. The difference of crushing effect:

      Due to the limitation of its own crushing conditions, although the particle size of the ore material processed by the jaw crusher is uniform, the overall particle size is too large. Therefore, for users with higher product quality, when purchasing equipment, consideration must be given to adding some auxiliary two-stage crushers. "The difference is that the counter crusher not only has great compressive strength, but also has the effect of stone forming, so the ore material processed by it has a strong cube and a reasonable gradation, which can fully meet the current stone production requirements. Therefore, in some stone production lines, a combination of the two is often used.

Generally speaking, the jaw crusher is mainly used for primary crushing, and the crushed stone is relatively large; the impact crusher is mainly used for crushing medium-sized stone, mainly for secondary crushing. The same thing is that all the material is squeezed. The degree of fragmentation is related to their structure and how they work. The anti-impact crusher is used to rotate and swing, and the moving cone rotates while eccentrically swinging to drive the cone lining and the fixed lining extruder material; the jaw crusher is divided into simple pendulum type and double pendulum type, and the plane jaw plate and the fixed jaw plate are driven by the moving claw. Reciprocating extrusion motion to crush the material. In short, the former is broken by the rotating swing, and the trajectory is circular; the latter is broken by the reciprocating swing, and the extrusion motion is straight. Compared with the jaw crusher, the working process of the counter-attack crusher is continuous, and the material force in the cavity is the force of bending force, shear force and friction force, which is easy to crush. Therefore, the counterattack crusher has large production capacity and low energy consumption.