摘要
为了提高立轴冲击式破碎机的产砂率,同时尽量降低破碎机的能耗,提出了以产砂率和转子功率为目标的转子结构优化方法。首先,建立了重复冲击作用下物料颗粒的累积损伤模型,在此基础上构建了适用于立轴冲击式破碎机破碎系统的数值计算模型,分析了物料颗料在破碎机中的破碎规律,并通过破碎试验验证了数值模型的可靠性;然后,采用正交设计分析和极差分析法揭示了转子结构参数对产砂率和转子功率的影响规律,并建立了产砂率和转子功率与转子结构参数的数学模型;最后,利用该数学模型对转子结构参数进行优化。研究结果表明:当转子直径为836 mm、分料锥倾角为38.9°、导料板安装角度为22.5°时,产砂率为47.2%,转子功率为82.5 kW,立轴冲击式破碎机的产砂率和转子功率在转子结构优化后得到了有效改善。研究结果为立轴冲击式破碎机转子结构的改进设计提供了理论依据。
In order to improve the sand production rate of the vertical shaft impact crusher while minimizing its energy consumption,a rotor structure optimization method with sand production rate and rotor power as the objectives was proposed.Firstly,a cumulative damage model of material particles under repeated impact was established,on this basis,a numerical calculation model suitable for the crushing system of vertical shaft impact crusher was constructed,and the crushing law of material particles in the crusher was analyzed.The reliability of the numerical model was verified through crushing tests.Then,orthogonal design analysis and range analysis were used to reveal the influences of rotor structural parameters on sand production rate and rotor power,and a mathematical model was established between sand production rate and rotor power with rotor structural parameters.Finally,the mathematical model was used to optimize the rotor structural parameters.The results show that when the diameter of the rotor is 836 mm,the inclination angle of the dividing cone is 38.9°,and the installation angle of the guide plate is 22.5°,the sand production rate is 47.2%,and the rotor power is 82.5 kW.The sand production rate and rotor power of the vertical shaft impact crusher have been effectively improved after optimizing the rotor structure.The research results can provide a theoretical basis for the improved design of the rotor structure of vertical shaft impact crusher.
作者
吴灿辉
赵丽梅
李松
孙可
WU Canhui;ZHAO Limei;LI Song;SUN Ke(School of Mechanical Engineering,Guizhou University,Guiyang,Guizhou 550025,China)
出处
《矿业研究与开发》
CAS
北大核心
2024年第9期212-218,共7页
Mining Research and Development
基金
国家自然科学基金项目(52065007)。
关键词
产砂率
转子功率
累积损伤模型
正交试验
多目标优化
转子结构
Sand production rate
Rotor power
Cumulative damage model
Orthogonal test
Multi-objective optimization
Rotorstructure
