基于柱塞式成型机的生物质成型设备优化设计

摘要

In order to improve the practicality and reliability of biomass molding equipment,this paper mainly focused on the improved design of biomass molding equipment.The single products outlet was improved to four outlets.Square compaction molding product was beneficial to the design of preserving compacted structure.To ensure the quality of forming block,molding cavity could also be used to maintain the shape of forming block.The virtual prototype was built by three-dimensional design software of Solidworks.Hydraulic system was designed through analysis of equipment working process.Then finite element analysis is carried out to the key part-compression rod by ANSYS Workbench.A multi-objective optimization design was presented by using Response Surface Optimization module.The results show that the maximum equivalent stress of the optimized model is 166.73 MPa.The size of the optimized model is smaller than the original one,which saves material and cost,and ensures the strength and rigidity meet the mechanical requirements.In the end,the production efficiency and molding quality of the biomass molding equipment are improved,and the strength and service life of the key part-compression rod is ensured.The optimization design has certain practical application value.%为了提高生物质成型设备的生产效率及压实成型效果,本文对生物质成型设备进行优化设计.在结构设计上将单出料口改为4个出料口;在生物质成型上将压实成型产品的形状设计为方形,有利于保型压实结构的设计;成型腔的设计既可以用作成型腔也可以用作保型腔,以确保成型块成型质量.同时,利用Solidworks三维设计软件进行虚拟样机建模,通过分析设备工作流程,对液压系统进行设计,并运用有限元分析理论,借助ANSYS Workbench对设备的关键零件--成型压杆进行了有限元分析,并使用Response Surface Optimization模块进行了多目标优化设计.研究结果表明,优化后模型的最大等效应力为166.73 MPa,在保证强度和刚度符合力学的要求下,减小了原来的尺寸,节省了材料和成本,而且保证了成型压杆的强度和使用寿命,提高了生物质成型设备的生产效率和成型质量.该研究具有一定的实际应用价值.