弛张筛抛射强度的多目标优化设计

Multi- parameter's Optimized Design of Vibration Intensity of a Flip- flow Screen

抛射强度K是振动筛筛分性能的重要指标之一。为了确定弛张筛抛射强度K的合适值,研究弛张筛机械结构和运动学参数对K的影响,建立了包含转速n、圆频率ω、偏心距e、横梁最大间距L等参数的抛射强度模型。对模型进行系列优化和回归分析,借助于Excel软件计算和绘图技术,获得相关参数的特性曲面。研究结果揭示了弛张筛的非线性动力学特性;确定K的优化值为7.8g,与实测值7.3g相符;建立K与关键参数的数学模型,得到结构参数和工艺参数的最优值。研究结果为完善弛张筛关键参数设计、进一步提高弛张筛的应用水平提供了基础依据。

Intensity of vibration K is an important indicator of the vibrating screen performance .In order to deter-mine the proper value of vibration intensity K of a flip-flow screen , and study influence of geometrical and kine-matics factors ,the model of vibration intensity K was established including rotating speed n, deriving frequency ω, eccentricity e and large distance of two moving beams L , etc.Then a series optimization on K and regression analy-sis were carried out .With the aid of calculation and plotting technology of ExcellSoftware, a series of response sur-faces of kinematics factors were also generated .The results reveal the nonlinear dynamics of the flip -flow screen;the optimized data of K is 7.8 g, which accords with the experimental data of data 7.3 g;key parameters expres-sions of Kwere created , optimized data of mechanical parameters and technological parameters were obtained .The results provide fundamentals for not only optimized design of the key parameters , but also the further application of the flip-flow screen .