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Abstract
A geometric model of rotors is established on the basis of the structure of vertical shaft impact crusher. The dynamic simulation of the rotor is carried out by using the discrete element software EDEM. At the same time, the correlation between the angle of the guide plate and the crushing performance of the crusher is studied systematically. The optimal angle of the guide plate is obtained by theoretical analysis of the particle motion. The simulation method is used to analyze the velocity of particles, so the influence law of the angle of the guide plate on the acceleration effect of particles is obtained. The results of this paper show that the peak value of the maximum velocity of particles is the highest when the angle of the guide plate is 35 ° , which is consistent with the theoretical results. At this time, the average velocity of particle population is the largest and the proportion of particles with high velocity is the highest. It means that the particles obtain the largest crushing kinetic energy and the best crushing performance.
Highlights
The demand for sands has increased in the construction industry, road transportation, and other infrastructure construction. e vertical shaft impact crusher is one of the main equipment for sand crushing, and it has the advantages of simple structure, convenient maintenance, and stable operation [1, 2]
Motion Velocity Analysis of Particles. e theoretical analysis shows that the particle velocity is the maximum when the angle of the guide plate is θ 34.85°. erefore, the angles of the guide plate were selected as 25°, 30°, 35°, 40°, and 45° to carry out the simulation test
Based on the discrete element method, the rotor of the vertical shaft impact crusher was simulated. e influence of different guide plate angles on rotor acceleration performance was studied by extracting the velocity data of particles. e main conclusions are as follows: (1) When the angle of the guide plate was 35°, the maximum velocity peak value of the particles in the whole process was relatively high, which was consistent with the theoretical calculation results
Summary
The demand for sands has increased in the construction industry, road transportation, and other infrastructure construction. e vertical shaft impact crusher is one of the main equipment for sand crushing, and it has the advantages of simple structure, convenient maintenance, and stable operation [1, 2]. The discrete element method was used to simulate the flow of particles in the rotor, and the influence of feed rate on the performance of the crusher was studied. Improve the crushing performance of the vertical shaft impact crusher, this paper studies the particle crushing performance on the basis of the discrete element method. To explore the influence of the angle of the guide plate on the crushing performance of the crusher, the maximum velocity, average velocity, and velocity distribution of the particles are analyzed. It provides a certain reference for rotor structure design and engineering optimization
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