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Working Principle And Advantage Analysis Of Impact Crusher

Impact crusher is the equipment that makes use of impact energy against brittle materials whose compressive strength does not exceed 350MPa to crush. It has the advantages of large crushing ratio, uniform particle size and less over-crushing, low energy consumption, large particle size adjustment range and selective crushing, etc. It is mainly suitable for the operation of medium and fine crushing of medium hardness materials in industries such as mining, metallurgy, cement, building materials, coal.

1.Working principle

Impact crusher is the crushing machinery which make use of impact energy to break materials. When the ore enters the crushing chamber, it is subjected to the impact of the high-speed rotary hammer head to perform selective crushing. The ore gains tremendous kinetic energy from the impact and is thrown at high speed to the first stage of the strike plate. Due to the counterattack of the counterattack plate, the ore is broken again, and the ore bounced by the counterattack plate is again impacted by the hammer head, and the above crushing process is repeated. Later, the broken ore is also thrown at high speed to the second stage counterattack plate, and it is further broken. In this way, the ore is continuously cracked, loose and broken along its own joint surface after repeated impacts of hammer head, counterattack plate and mutual collisions between the ores. When the particle size is smaller than the gap between the hammer head and the strike plate, it is discharged from the lower part of the equipment.


2. Advantages of performance

  • It has large inlet, high crushing chamber, and is suitable for crushing materials with high hardness and high lumpiness, and has less stone powder;
  • It ha large crushing ratio, high crushing efficiency, cuboid shape and is optional crushing.
  • The size of discharging particle can be adjusted to simplify the crushing process.
  • The clearance between the counter plate and the hammer can be adjusted conveniently, and the discharge particle size can be effectively controlled, and the particle shape is good;
  • It is of compact structure, good rigidity. The rotor has a large moment of inertia;
  • The board hammer, counterattack board and lining board are made of new wear-resistant materials, which can resist impact, abrasion and has long service life.
  • The uniform plate structure makes the discharge have more small particle size and cubic shape, and it has no inner grain;
  • The back plate of the rotor can withstand extremely high rotary inertia of the rotor and impact crushing force of the hammer head;
  • With unique counter gear plate, keyless connection, and convenient maintenance, it is stable, reliable;
  • It has the function of three-level crushing and shaping, so the crushing ratio is large. The product is shaped like a cube and can be selectively broken.
  • It has reasonable plate hammer structure, with the characteristics of quick loading and unloading and multiple transposition. And it can greatly shorten the time of replacing the plate hammer;
  • It has multi-function hydraulic station, hydraulic high-speed discharge clearance, and the function of  stabilizing vibration of counterattack plate and automatic engine body opening.
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