高速胶乳分离机转鼓体结构优化

Structure Optimization of Drum-Body on High-Speed Latex Disc-Separator

针对高速胶乳离心机转鼓体受载大,应力分布不均,局部应力值大等问题,运用多目标优化设计方法,改善其结构及应力分布。建立转鼓有限元计算模型,分析转鼓的受力和约束条件,得到转鼓体的应力和应变云图;以转鼓体外径R_1、高度H_1、筒体壁厚D_1和底面厚度D_2作为目标参数,进行结构优化。优化结果:R_1,H_1和D_1分别减少了4.180,3.640,2.353 mm,D_2增加了1.518 mm;最大等效应力减小了21.09 MPa,下降率为4.29%,最大局部应力减小;总质量减小了1.042 kg,下降率为5.85%;最大变形量相对减小0.001 35 mm,下降率为0.65%,基本达到了优化目标。研究结果及分析方法对碟式分离机结构优化具有参考价值和借鉴意义。

In view of the problems of heavy loading, uneven distribution of stress and large local-stress value on the drum body of high-speed latex disc-separator, the multi-objective optimization method was applied to improve the structure parameters and stress distribution. By ANSYS parametric modeling, the finite element model on latex separator drum was created to analyze the force and constraint of the drum, and the contour figures of stress and the strain on the drum body were achieved. The drum diameter R1, height H1, the cylinder wall thickness D1 and bottom thickness D2 were set as the target parameters. The structure optimization was conducted by using the multi-objective optimization design method. The optimization result shows that： R1, H1 and D1 is respectively reduced by 4. 180, 3. 640 and 2.353 mm, and D2 increases 1. 518 mm, and the maximum equivalent stress is reduced by 21.09 MPa with the decline rate of 4. 29%. The maximum local-stress is decreased, and the total quality is reduced by 1. 042 kg with the decline rate of 5. 85%. The maximum deformation decreased 0. 001 35 mm, and the decreased rate is of 0.65% , and basically reached the optimization goal. The results and analysis method can provide more guidance and reference for the structure optimization of disc-separator.