The difference between jaw crusher and impact crusher

What is the difference between jaw crusher and impact crusher? The difference between jaw crusher and impact crusher is in the following aspects.

1. Purpose

Jaw crushers are generally used for primary crushing, which is to crush large materials into equipment suitable for secondary crushing machines such as cone crushers, impact crushers, and roller crushers. The secondary crushing materials are generally very small. If it is large, the jaw crusher must be used as the first stage of crushing. The impact crusher generally breaks marble and granite. Materials that are too hard are not suitable for impact crushing, which will cause a lot of loss to the vulnerable parts.

2. Scope of work

Jaw Crusher is called Jaw Crusher for short. It is mainly used for medium-sized crushing of various ores and bulk materials. It can crush materials whose compressive strength is not greater than 320Mpa. This series of products has complete specifications, and the feeding size is 125mm ~ 750mm, which is an ideal equipment for primary crushing.

Impact Crusher (Impact Crusher), the finished product is cubic, without tension and cracks, and the grain shape is quite good. It can crush various coarse, medium and fine materials (granite) with a particle size of no more than 500mm and a compressive strength of no more than 50MPa. , limestone, concrete, etc.), the discharge particle size can be adjusted, and the crushing specifications are diversified.

3. Working principle

When the jaw crusher is working, the motor drives the belt and the pulley, and the movable jaw moves up and down through the eccentric shaft. When the movable jaw rises, the angle between the toggle plate and the movable jaw becomes larger, thereby pushing the movable jaw to approach the fixed jaw, and at the same time The material is crushed or chopped to achieve the purpose of crushing; when the movable jaw moves down, the angle between the toggle plate and the movable jaw becomes smaller, and the movable jaw leaves the fixed jaw under the action of the pull rod and spring, and the material has been crushed at this time It is discharged from the lower opening of the crushing cavity. With the continuous rotation of the motor, the movable jaw of the crusher will do periodic motion to crush and discharge the materials, realizing mass production.

When the counterattack breaker is working, driven by the motor, the rotor rotates at a high speed. When the material enters the blow bar area, it collides with the blow bar on the rotor and breaks, and then is thrown to the counterattack device to be crushed again. The upper bounce back to the action area of the blow bar for re-crushing. This process is repeated. The material enters the first, second and third counter-attack chambers from large to small for repeated crushing until the material is crushed to the required particle size and discharged from the discharge port.

4. Performance

The jaw crusher has the following features: deep crushing cavity and no dead zone, which improves the feeding capacity and output; the crushing ratio is large, and the product particle size is uniform; the gasket type discharge port adjustment device is reliable and convenient, and the adjustment range is large, which increases the equipment capacity. The flexibility; simple structure, reliable work, low operating costs. Equipment energy saving: 15% to 30% energy saving for a single machine, and more than double the energy saving for the system; the adjustment range of the discharge port is large, which can meet the requirements of different users; the noise is low and the dust is less.

Impact Crusher (Impact Crusher) has the following features: large feed port, high crushing cavity, high hardness of suitable materials, large lumps, and less stone powder in the product; the gap between the impact plate and the blow bar can be easily adjusted, and the output particle size and particle shape can be effectively controlled. Good; compact structure, strong machine rigidity, and large moment of inertia of the rotor; high chrome blow bar, impact resistance, wear resistance, and large impact force; keyless connection, convenient maintenance, economical and reliable; complete crushing functions, high productivity, and Small wear and high comprehensive benefit.