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| 农田残膜压缩成型的参数优化 |
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田力1,2, 纪超3,2, 陈学庚1,2, 吴杰1,2
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| (1.石河子大学 机械电气工程学院, 新疆 石河子 832000;2.农业农村部 西北农业装备重点实验室, 新疆 石河子 832000;3.新疆农垦科学院 机械装备研究所, 新疆 石河子 832000) |
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| 摘要: |
| 针对机械回收后农田残膜集条（堆）质地松散、储运本成本高，为残膜二次回收利用带来巨大困难的问题，采用多因素正交试验方法，以残膜成型块松弛比和比能耗为试验指标，压缩力、保压时间、含土率和含水率为影响因子，对影响残膜压缩成型各因素及其影响规律进行研究，建立并分析了各影响因素与残膜成型块松弛比和比能耗的回归模型。试验结果表明：影响残膜成型块松弛比的主次参数依次为：压缩力 > 含土率 > 保压时间 > 含水率；影响残膜压缩过程比能耗的主次参数依次为：压缩力>保压时间，含土率和含水率对残膜压缩比能耗影响不显著。残膜压缩成型作业最优参数取值为：压缩力13.3 MPa、保压时间25 s、含土率53.9%、含水率16.7%，可得到残膜成型块松弛比为1.321，比能耗为26.92 J/g。研究结果可对后续农田残膜压包成型机具的设计及作业参数优化提供理论依据。 |
| 关键词: 残膜 压缩成型 松弛比 比能耗 优化 |
| DOI：10.11841/j.issn.1007-4333.2019.09.15 |
| 投稿时间：2018-12-10 |
| 基金项目:国家自然科学基金项目（31560336）；国家重点研发计划项目（2017YFD0701102） |
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| Parameter optimization of compression moulding of farmland residue film |
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TIAN Li1,2, JI Chao3,2, CHEN Xuegeng1,2, WU Jie1,2
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| (1.College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China;2.Key Laboratory of Northwest Agricultural Equipment, Ministry of Agriculture and Rural Affairs, Shihezi 832000, China;3.Mechanical Equipment Research Institute Xinjiang Academy of Agricultural and Reclamation Science, Shihezi 832000, China) |
| Abstract: |
| In the process of mechanized recycling of residue film,most of the residue film was temporarily left in the field in the form of strips (heap) after recycling.Due to the problems of loose texture and high cost of storage and transportation,it is difficult to reclaim and utilize the residue film.The optimization of the relevant molding process parameters were carried out to solve the problem of residue film's recycling in this study.The relaxation ratio and specific energy consumption were took as the test indexes,and the compression force,holding time,soil content and water content were adopted as the influencing factors in this study.An orthogonal experiment of multi-factors were carried out to analyze the influence of each factor on the compression moulding of residue film,and the regression model of multi-factor influence on the relaxation ratio and specific energy consumption of residue film compaction were established and analyzed.The results showed that the compressive force was the biggest effect factor of relaxation ratio,followed by soil content,holding time and water content.The compressive force was the biggest effect factor of specific energy consumption,followed by holding time.The influence of soil content and water content on specific energy consumption was not significant.The optimal technological parameters of residue film's compression moulding were as following:the compression force was 13.3 MPa,the holding time was 25 s,the soil content was 53.9% and the moisture content was 16.7%.Under those optimum conditions,the relaxation ratio of residue films compaction was 1.321,and specific energy consumption was 26.92 J/g.The results provided references for the design and operation parameters optimization of the following plastic film recycling and molding machines. |
| Key words: residue film compression molding relaxation ratio specific energy consumption optimization |
