Optimization of key components of impact crusher based on “rock bed” mechanism

Abstract

“Rock bed” mechanism and its formation were discussed in this article. Inspired by the bionic wear-resistant structure, the shape and parameters of an impact crusher chamber are optimized. Taking both crusher strength and crushing effect into consideration and using discrete element method, the parameters of the impact crusher chamber were properly optimized. By adjusting the major parameters and structures of the factors (rotor speed, angles of the first and second impact plates, shape of impact plate and blow bar material) influencing crushing effect, the orthogonal test with four three-level factors was conducted to find an optimal combination with the best crushing effect so as to optimize the impact crusher.

Keywords:

• Bionics
• crushers
• optimization; DEM
• rock bed

Disclosure statement

No potential conflict of interests was reported by the author(s).

Additional information

Funding

The authors acknowledge the Youth Program of National Natural Science Foundation of China (Grant: 51905100) and the Young and middle-aged teachers project of Fujian province (Grant: JT180342 and JAT190429).