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      2. 青貯秸稈高壓縮比打包機壓縮裝置實驗與設計
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        1.湖北工業大學機械學院工業與制造系;2.華中農業大學工學院

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        秸稈雙發酵聯產乙醇沼氣的生物質耦合降解和有機碳聯合利用機制


        Experiment and Design of Compression Device of High Compression Ratio Baler for Silage Straw
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        Huazhong Agricultural University

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          摘要:

          針對目前青或半青玉米秸稈粉碎后傳統青貯方式密實度小、厭氧程度低、氨化不足、易腐爛變質、不便密封等缺點,進行了青貯秸稈高壓縮比打包機的設計與試制。對關鍵部件壓縮裝置預先進行了4倍、5倍、6倍三種壓縮比的壓縮成型實驗,經過正交設計及多水平分析確定了1:6的最優壓縮比?;谔岣叽虬尚吐实馁|量目的,確定壓縮箱采用2個液壓油缸開閉加料活動蓋板,2個主液壓油缸對壓進行壓縮, 1個液壓油缸推出及保壓箱保壓等技術完成壓縮和保壓成型;根據物料壓縮后由于應力松弛,存在一定程度膨脹和回彈的特性,進行設計性試驗。確定其保壓箱長600mm,寬300mm,高365mm。經過校驗后的壓縮裝置實現內部有效工作區間長1800mm、寬600mm、高365mm,實現體積壓縮達到1:6的較高壓縮比,極大改善了厭氧條件,提高了氨化程度,方便了使用。

          Abstract:

          Aiming at the disadvantages of the present traditional silage of green or semi-green corn stalk powder, the compactness of lapping and pressing is small, the degree of anaerobic is not enough, the ammoniation is not good, there are some rotten and deteriorated, and it is inconvenient to seal in the process of opening and using. The key part of the high compression ratio packer, compression devices is designed. The compression molding experiments of four times, five times and six times compression ratio were carried out for the key component compression device in advance. The optimal compression ratio of 1:6 was determined through orthogonal design and multi-level analysis. Based on the quality purpose of improving packaging forming rate, the compression box is used by two hydraulic cylinders to open and close the feeding movable cover plate, two main hydraulic cylinders to compress the pressure, one hydraulic cylinder to push out and the pressure maintaining box to complete the compression and pressure maintaining forming. According to the properties of material expansion and springbackdue to stress relaxation after compression,the design experiment was carried out.the length of the pressure maintaining box is 600mm, the width is 300mm and the height is 365mm. After design and inspection the internal effective working range of the compression device is 1800mm in length, 600mm in width and 365mm in height,and the volume compression reaches a high compression ratio of 1:6, the anaerobic conditions is improved, the degree of ammoniation is improved and the use is more convenient.

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        歷史
        • 收稿日期:2020-05-14
        • 最后修改日期:2020-06-19
        • 錄用日期:2020-06-19
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