立式环模秸秆压块机成型过程建模与参数优化

在对立式环模秸秆压块机核心工作单元结构与工作原理分析的基础上,建立了压辊受力和物料成型能耗模型,绘制了不同技术参数下压辊载荷分布曲线和物料成型能耗曲线,并在此基础上提出了设备技术参数优化设计方法。理论分析结果表明:模孔偏心设计可改善压辊载荷分布,降低设备吨料能耗;模孔最佳偏心角和物料与辊模之间的摩擦因数、辊模直径比有关,物料与辊模摩擦因数、辊模直径比越大,模孔最佳偏心角也越大,现实技术参数条件下,模孔偏心设计可使物料成型能耗降低0.29%~3.58%。通过设备对比试验,证实了以上结论。

Process Modeling and Parameter Optimization of Straw Briquetting Machine with Vertical Circular Mould

It can provide a theoretical basis for quantitatively analyzing the force on mechanism and energy consumption to build model of material molding process for vertical circular mould straw briquetting machine. On the basis of analysis on structure and working principle of core work unit on vertical circular mould straw briquetting machine, the models of forces on roller and molding energy consumption are established, and the load distribution curves and molding energy consumption curves are drawn under different technical parameters, and finally, the optimization method of technical parameters is proposed. Theoretical analysis results show that the eccentric design of molding hole can improve load distribution of the rollers, and reduce the energy consumption per ton of material. The eccentric angle of molding hole is related to the friction coefficient between equipment and materials as well as diameter ratio of roller to circular mould. The optimal eccentric angle of molding hole is greater when the friction coefficient between equipment and materials and diameter ratio of roller to circular mould are greater. The eccentric design of molding hole can reduce energy consumption from 0.29% to 3.58%. Finally, through the device comparison test, the above conclusions are confirmed. The research provides a theoretical reference for the design of key technical parameters.