| Design and experiment of no\|sieve cotton straw crusher |
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| DOI：10.7606/j.issn.1000-7601.2024.02.29 |
| Key Words: cotton straw no\|sieve crush L improved hammer blade design experiment |
| Author Name | Affiliation | | CAO Weizhao | College of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | SHEN Weiqiang | Institute of Agricultural Mechanization, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China | | GUO Zhaofeng | Institute of Agricultural Mechanization, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China | | MA Yan | Institute of Agricultural Mechanization, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China | | ZHI Heng | College of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | BAN Ting | College of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
Institute of Agricultural Mechanization, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China |
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| Abstract: |
| The current crushing process of the sieve crusher had difficulties in discharging and easy to block problems due to the high degree of cotton straw lignification, strong toughness, and mixing with cotton wool. In this study, a new type of no\|sieve cotton straw crusher was designed. By adjusting the area of the discharge outlet, the change of the gas flow in the crushing chamber was achieved to obtain different crushing particle size of the finished product of the cotton straw. The structure of particle size classification device, crushing knife roller and other major components were determined. The force process of cotton straw in the crushing process was described, and the key parameters of L improved hammer blade were determined. The structure and arrangement design of the L improved hammer blade and throwing blade was carried out. The results of Fluent simulation analysis showed that the L improved hammer blades were more conducive to improving the mobility of cotton straw in the crushing chamber and forming a larger negative pressure inside the crushing chamber than the straight blade hammer blades. Taking the number of L improved hammer blades, crushing knife roller speed, and outlet area as the test factors, and the qualified rate of cotton straw crushing particle size as the test indexes, a three\|factor three\|level orthogonal test was conducted, the significance of the impact on the qualified rate of cotton straw crushing particle size from the largest to the smallest were the crushing knife roller speed, outlet area, the number of L improved hammers. The more optimal parameter combination were determined to be 140 L improved hammers, 2 660 r·min-1 the speed of crushing spindle, and 136 500 mm2 the area of outlet. Using the optimal parameter combination for field test, the qualified rate of cotton straw crushing particle size was 93.7%, which met the actual production needs of cotton straw crusher. |
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