| Design and simulation analysis of frozen sea buckthorn sieving device |
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| DOI：10.7606/j.issn.1000-7601.2022.06.30 |
| Key Words: sea buckthorn discrete element simulation sieving efficiency sieving speed |
| Author Name | Affiliation | | YANG Jinfa | College of Mechanical and Electrical engineering, Gansu Agriculture University, Lanzhou, Gansu 730070, China | | HU Jingming | College of Mechanical and Electrical engineering, Gansu Agriculture University, Lanzhou, Gansu 730070, China | | YANG Mei | College of Mechanical and Electrical engineering, Gansu Agriculture University, Lanzhou, Gansu 730070, China | | BI Yang | College of Food Science and engineering, Gansu Agriculture University, Lanzhou, Gansu 730070, China | | LI Moruo | College of Mechanical and Electrical engineering, Gansu Agriculture University, Lanzhou, Gansu 730070, China | | ZHANG Qianglin | College of Mechanical and Electrical engineering, Gansu Agriculture University, Lanzhou, Gansu 730070, China | | XIANG Jintian | College of Mechanical and Electrical engineering, Gansu Agriculture University, Lanzhou, Gansu 730070, China | | SUN Weiyi | College of Mechanical and Electrical engineering, Gansu Agriculture University, Lanzhou, Gansu 730070, China | | QU Hao | College of Mechanical and Electrical engineering, Gansu Agriculture University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| To reduce the pure\|fruit trash content of branch fruit of the quick\|frozen sea buckthorn after screening and purification in Gansu production area, a linear vibrating screen with three layers of sieves was designed based on the traditional ZKB type linear vibrating screen with diameters of the three layers’ sieves of 12 mm, 8 mm and 5 mm. The discrete element simulation software was used, with the adoption of the vibration direction angle, amplitude and frequency as the independent variables, and the vibrating screen efficiency and sieving speed as the response values. The orthogonal test was designed by applying the comprehensive scoring method to analyze each factor and its interaction. The test results showed that the best screening effect was achieved when the vibration direction angle was 45°, the amplitude was 2 mm and the vibration frequency was 18 Hz. In the prototype test under this condition, the screening efficiency and screening speed of the lower deck screen were 85.3% and 0.33 m·s-1, respectively, and the screening efficiency and screening speed of the upper deck screen were 85.9% and 0.38 m·s-1, respectively. The main design index of the machine conformed to the relevant national standards and met the demand of enterprises for screening efficiency. The results of prototype field test and simulation test on the four index differences and the best vibration parameters of nine sets of test data were consistent. |
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