D200型秸秆纤维制取机结构优化试验研究

Structural optimization experimental study on D200 crop straw fiber extruder

为进一步完善D200型秸秆纤维制取机,以水稻秸秆为试验材料,采用五因素两水平正交试验方法,选取制取机模头内径、挤压段长度、挤压段螺杆螺距、喂入段螺距型式、升压环外径为影响因子,以秸秆纤维制取机生产率、纤维得率、纤维长宽比、抗张指数为响应函数,对其进行较优结构参数组合试验研究,结果表明,当结构参数组合为模头内径164 mm、挤压段长度240 mm、挤压段螺杆螺距40 mm、喂入段螺杆采用变距螺旋型式、升压环外径195 mm时,各项指标分别达到:生产率762.9 kg·h-1、纤维得率82.5%、纤维长宽比41.3、抗张指数8 N·m·g-1,满足设计目标要求,验证试验结果进一步证明参数优化结果的合理性。可为该机定型设计提供参考依据。

In order to further improve the D200 crop straw fiber extruder. Selected rice straw as the experimental material, take five factors with two levels of orthogonal test, considered the inner diameter of die head, the length of extrusion section, the pitch of extrusion section screw, the pitch pattem of the feeding section and the external diameter of booster ring as the impact factors, selected the productivity, the fiber yield, the length-width ratio of fiber and the tensile index as the response function and did the more optimized structural parameters experimental study. The results showed that when the structure parameters combination was the inner diameter of die head was 164 mm, the length of extrusion section was 240 mm, the pitch of extrusion section screw was 40 mm, the pitch of feeding section was variable and the extemal diameter of boosting ring was 195 mm, the indicators were that the productivity was 762.9 kg·h^-1, the yield of straw was 82.5%, the length-width ratio of fiber was 41.3, the tensile index was 8 N·m·g^-1, could meet the requirement of the design goal. The result of the verification test further proved the correctness of the parameters optimization result. The result of the research provided a reference basis for the finalize design to the machine.