低频幅三自由度振动筛及筛分性能仿真试验研究OA

To address the common problems of screen hole clogging and low screening efficiency in traditional vibrating screens,a three-degrees-of-freedom vibrating screen with low-frequency amplitude was designed.The vibration screening process was simulated using EDEM software.When when the feeding amount was 0.6 kg,the average screening efficiency of the two-degrees-of-freedom vibrating screen was 1.493 times that of the single-degree-of-freedom screen,while the three-degrees-of-freedom screen achieved efficiencies 2.250 times and 1.507 times higher than those of the single-and two-degrees-of-freedom screens,respectively.As the number of degrees of freedom increased,the screening efficiency improved,with a more pronounced effect observed at higher feeding amounts.A multi-factor orthogonal simulation experiment was conducted to determine the relative importance of factors affecting average screening efficiency.The results indicated that feeding amount,X-axis frequency,Y-axis frequency,screen inclination angle,and Y-axis amplitude were the primary influencing factors.A predictive model equation for average screening efficiency was established,followed by parameter optimization.The optimized parameters were validated through simulation,yielding an average screening efficiency of 0.238 09 kg/s,which closely matched the predicted value.The optimal parameter combination for achieving higher screening efficiency under the given simulation conditions was also identified.