|
| Research on aerodynamic characteristics of walnut materials and optimization of shell-kernel air separation device |
| |
| DOI：10.19902/j.cnki.zgyz.1003-7969.240101 |
| KeyWord:walnut suspension speed shell-kernel sorting air separation method |
| FundProject:新疆维吾尔自治区杰出青年科学基金（2022D01E61）；新疆维吾尔自治区科技援疆计划项目（2020E02114）；新疆维吾尔自治区重点研发计划项目（2022B02048）；国家自然科学基金（51865059） |
| Author Name | Affiliation | | QU Shuhe1, ZHU Zhanjiang1,2, MAO Wulan2,
ZHU Zhaoshuai2, MAIHEMUJIANG·Batuer2, SUN Lina2 | (1.College of Mechanical and Electrical Engineering, Xinjiang Agricultural University,
Urumqi 830052,China
2.Agricultural Mechanization Institute, Xinjiang
Academy of Agricultural Sciences, Urumqi 830091,China) |
|
| Hits: 1090 |
| Download times: 1486 |
| Abstract: |
| Shell-kernel sorting constitutes an essential link in the process of cracking walnuts to retrieve the kernels and serves as the foundation for the in-depth processing of walnuts. To investigate the feasibility of air separation technology in the domain of walnut shell-kernel sorting, the aerodynamic characteristics of walnut materials was explored by theoretical calculations and experimental research, and on this foundation, a walnut shell-kernel air separation device was designed. The working parameters of this device were optimized by single factor experiment and response surface methodology. The results indicated that within the mixed material of walnut shells and kernels, there was only a minor overlap in the suspension speed range between crushed kernels and 1/2 shells. Walnut kernels and shells of the same grade exhibited varying ranges of suspension speeds. By regulating the airflow speed, separation of walnut kernels from shells could be achieved. The influence of the operational parameters of the walnut shell-kernel air separation device on the cleaning rate was ranked in descending order as follows: height of the input port, feed rate, and fan frequency. The optimal operational parameter combination was obtained as follows: feed rate 5 kg/min, fan frequency 46 Hz, and input port height 34 mm. Under these conditions, the cleaning rate and the loss rate were 99.32% and 1.03%, respectively. In conclusion, using the air separation method for walnut shell and kernel separation is feasible, and the sorting efficiency of the air separation device can be enhanced by optimizing parameters. |
| View full text View/Add Comment Download reader |
| Close |
|
|
|
