摘要
并联振动筛因可实现多维振动、利于物料高效筛分而应用前景广泛,为提高并联振动筛分性能,首先提出了具有不同初始相位的三维并联振动筛模型并进行了运动学分析,利用EDEM软件开展了三维并联振动筛分的初始相位单因素仿真,再通过台架试验对仿真结果进行了验证分析,并开展了多因素正交试验分析了各因素对性能指标的影响主次顺序和较优因素组合。研究结果表明:同等条件的台架试验与仿真结果基本一致,在其他条件不变时,筛分籽粒量随X方向初始相位的增大而先增后降,且X方向初始相位为45°时含杂量最多;Z方向初始相位为90°时筛分籽粒量最低,含杂量随着Z方向初始相位的增大而先增后降;Y方向初始相位在30°和60°时筛分籽粒量较高,在60°时含杂量低于其他水平且差异明显;正交试验得出各因素影响筛分效率的主次顺序依次为:X方向振幅、Y方向振幅、Z方向初始相位、X方向初始相位、Y方向初始相位、Z方向振幅,各因素影响含杂率的主次顺序依次为:Z方向振幅、Y方向振幅、X方向振幅、X方向初始相位、Z方向初始相位、Y方向初始相位,采用最佳组合参数后筛分效率提高了62.02%,含杂率降低了53.85%。
Parallel vibrating screen could be widely used due to multi-dimensional vibration, which was conducive to efficient screening of particle materials. In order to improve the parallel screening performance, firstly, the three-dimensional parallel vibrating screen with different initial phases model was proposed and the kinematics analysis was carried out. The single factor simulation experiment of initial phase was carried out by EDEM software, then, the simulation results were verified by bench test and the multi-factor orthogonal test was carried out to analyze the influence of each factor on the performance index and get a better combination of factors. The results showed that the experimental results were in good agreement with the simulation results under the same conditions. When the other conditions were constant, as the initial phase angle in X direction was increased, the sieving grain was increased first and then decreased, and the impurity content was higher when the initial phase in X direction was 45°. When the initial phase of in Z direction was 90°, the sieving grain was the lowest, the impurity content was increased first and then decreased with the increase of initial phase in Z direction. The sieving grain was higher when the initial phase were 30° and 60°, the impurity content in the whole sieving time was lower than other levels at 60° and the difference was obvious. The orthogonal test showed that the primary and secondary order of the factors affecting the screening efficiency was X amplitude, Y amplitude, Z initial phase, X initial phase, Y initial phase and Z amplitude. The primary and secondary order of the factors affecting the dirt percentage was Z amplitude, Y amplitude, X amplitude, X initial phase, Z initial phase and Y initial phase. The efficiency of three-dimensional vibration was improved by 62.02% and the inclusion rate was reduced by 53.85% when using the best combination of parameters.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2017年第9期88-95,共8页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家自然科学基金项目(51375214
51605196)
江苏省自然科学基金项目(BK20160532)
中国博士后科学基金项目(2016M591788)
关键词
三维并联筛
初始相位
筛分性能
试验
three-dimensional parallel vibration
initial phase angle
screening performance
experiment
