青贮秸秆高压缩比打包机压缩装置实验与设计
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1.湖北工业大学机械学院工业与制造系;2.华中农业大学工学院

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秸秆双发酵联产乙醇沼气的生物质耦合降解和有机碳联合利用机制


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:

    针对目前青或半青玉米秸秆粉碎后传统青贮方式密实度小、厌氧程度低、氨化不足、易腐烂变质、不便密封等缺点,进行了青贮秸秆高压缩比打包机的设计与试制。对关键部件压缩装置预先进行了4倍、5倍、6倍三种压缩比的压缩成型实验,经过正交设计及多水平分析确定了1:6的最优压缩比。基于提高打包成型率的质量目的,确定压缩箱采用2个液压油缸开闭加料活动盖板,2个主液压油缸对压进行压缩, 1个液压油缸推出及保压箱保压等技术完成压缩和保压成型;根据物料压缩后由于应力松弛,存在一定程度膨胀和回弹的特性,进行设计性试验。确定其保压箱长600mm,宽300mm,高365mm。经过校验后的压缩装置实现内部有效工作区间长1800mm、宽600mm、高365mm,实现体积压缩达到1:6的较高压缩比,极大改善了厌氧条件,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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  • 收稿日期:2020-05-14
  • 最后修改日期:2020-06-19
  • 录用日期:2020-06-19
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