In the field of mineral crushing, impact crushers and impactors each play an important role, but they differ in structure, working principle, and application. The following is a detailed introduction to the two devices:

Impact crusher

Definition and structure:

• Impact crusher, also known as an impact crusher or sand-making machine, is a high-energy and low-consumption impact crusher with an international advanced level.

• It is mainly composed of seven parts: feeder, distributor, vortex crushing chamber, impeller experience, main shaft assembly, base transmission device, and motor.

Working principle of impact crusher:

• Stones fall directly from the top of the machine into the high-speed rotating turntable.

• Under the action of high-speed centrifugal force, another part of the target stone diverted around the turntable collides at high speed in an umbrella shape for high-density crushing.

• After the stones collide with each other, a vortex motion will be formed between the turntable and the shell, resulting in repeated mutual impact, friction, rolling, and then discharge from the bottom.

• A closed-loop cycle is formed many times, and the required particle size is controlled by the screening equipment.

Application of impact crusher:

• It is widely used in mining, metallurgy, chemical industry, construction, and other industries.

• It is particularly suitable for crushing limestone, marble, quartzite, pebbles, basalt, granite, and other materials.

• The impactor of impact crusher

Definition and classification:

• The impactor is a basic equipment used in drilling projects, generally divided into pneumatic impactors and hydraulic impactors.

• Pneumatic impactors use compressed air as the power medium to generate a continuous impact load at the bottom of the hole.

• Hydraulic impactors use drilling flushing fluid as the power medium and use high-pressure fluid energy and dynamic water hammer energy to generate a continuous impact load at the bottom of the hole.

Working principle (taking pneumatic impactor as an example):

Using compressed air as the power, the energy of compressed air is used to generate a continuous impact load.
Compressed air also serves as a hole-washing medium.

It is usually directly connected to a carbide column tooth drill bit to crush rocks by impact, and it rotates at a low speed without coring for full drilling.

Application of impact crusher:

It is mainly used in hydrological well drilling, coreless geological drilling, geological disaster prevention and control projects, and mining rock drilling.

It is suitable for use in gravel and hard rock layers, and drill bits with special structures can also be used in soft soil layers.

Summary

• Impact crushers and impactors have important applications in the field of mineral crushing, but their structures, working principles, and application scenarios are different.

• Impact crushers are mainly used for crushing and fine crushing of materials, while impactors are mainly used for rock crushing and drilling operations in drilling projects.

• When choosing which equipment to use, it is necessary to comprehensively consider the specific operation requirements, material characteristics, and operating environment.