Design and Experiment of Pre⁃screening Cleaning Device for Combined Screen Surface of Corn Grain Harvester

被引：0
|
作者：
Wang F. [1 ]
Alimu M. [1 ,2 ]
Zhang J. [2 ]
Li Q. [2 ]
Xu L. [1 ]
机构：
[1] College of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi
[2] Xinjiang Xinyan Luperus Technology Co., Ltd., Urumqi
来源：
Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | / 55卷 / 05期
关键词：
corn grain harvester; crank linkage mechanism; large feeding quantity; pre-cleaning device;
D O I：
10.6041/j.issn.1000-1298.2024.05.012
中图分类号：
学科分类号：
摘要：
In view of the fact that the current corn grain harvester can not meet the need of large feeding quantity cleaning above 15 kg / s, a kind of cleaning device with pre-cleaning function was designed. Firstly, the stress analysis of corn grains before the extruder leaved the screw conveyor and reached the pre-cleaning screen was carried out, and then the motion model of the crank linkage mechanism was simplified. Secondly, the motion state of corn grains on the sieve surface was analyzed. The impeller and volute of centrifugal fan were designed and calculated. The single factor test was used to determine the fan speed, vibration frequency and the value range of the upper screen opening. With the fan speed, vibration frequency and the opening of the upper screen as test factors, and the grain impurity content and cleaning loss rate as evaluation indexes, the three-factor and three-horizontal center combined test was designed to establish a regression model between the factors and indexes. The test results were analyzed by response surface method, and the regression model was optimized by Design-Expert 12. When the feeding amount of corn extract was 16 kg / s, the optimal combination was obtained. The test results showed that the fan speed was 1 202. 50 r / min, the vibration frequency was 5. 41 Hz, and the opening of the upper screen was 18 mm. Under these conditions, the grain impurity content was 0. 79% and the cleaning loss rate was 1. 10% . The verification test showed that the speed of the fan was 1 200 r / min, the vibration frequency was 5 Hz, and the opening of the upper screen was 18 mm. At this time, the kernel impurity content was 0. 82%, the cleaning loss rate was 1. 14%, the relative error between the test value and the optimization value was less than 5%, and the kernel impurity content was 2. 07 percentage points lower than that of the traditional double-layer reciprocating vibrating screen cleaning device. The loss rate of cleaning was reduced by 2. 13 percentage points, which proved that the design was reasonable and met the national cleaning standard. © 2024 Chinese Society of Agricultural Machinery. All rights reserved.
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页码：135 / 147and166
相关论文
共 25 条
  • [1] CHEN Qingwen, HAN Zengde, CUI Junwei, Et al., Development status and trend analysis of self-propelled grain combine harvester, China Agricultural Science and Technology Review, 17, 1, pp. 109-114, (2015)
  • [2] LI Xinping, MENG Yajuan, ZHANG Jialiang, Et al., Design and experiment of grain cleaning device with roller rolling cylinder and sieve, Transactions of the Chinese Society for Agricultural Machinery, 49, 10, pp. 92-102, (2018)
  • [3] GENG Duanyang, MOU Xiaodong, ZHANG Guodong, Et al., Mechanism analysis and optimization experiment of wheat combine cleaning, Journal of Jilin University (Engineering and Technology Edition), 52, 1, pp. 219-230, (2022)
  • [4] JIANG Tao, LI Haitong, GUAN Zhuohuai, Et al., Design and experiment of uniform dispersion diversion device for screen surface material in rape harvest cleaning, Transactions of the Chinese Society for Agricultural Machinery, 54, 1, pp. 146-158, (2023)
  • [5] FAN Rong, CUI Qingliang, LU Qi, Et al., Study on distribution law of materials under screen in air screen cleaning device, Journal of Chinese Agricultural Mechanization, 44, 1, pp. 142-151, (2023)
  • [6] HOU Junming, REN Zhaotan, ZHU Hongjie, Design and experiment of double-layer tilting vibrating air screen castor cleaning device, Transactions of the Chinese Society for Agricultural Machinery, 53, pp. 39-51, (2022)
  • [7] IVANOV N M, FEDORENKO I Y, ZAKHAROV S E, Et al., Evaluating grain feed at separation by planetary cylindrical sieve with round holes, Siberian Herald of Agricultural Science, 47, 5, pp. 72-79, (2017)
  • [8] LAWINSKA K, MODRZEWSKI R., Analysis of sieve holes blocking in a vibrating screen and a rotary and drum screen, Physicochemical Problems of Mineral Processing, 53, 2, pp. 812-828, (2017)
  • [9] LI Z, TONG X, ZHOU B, Et al., Design and efficiency research of a new composite vibrating screen, Shock and Vibration, 2018, 2, pp. 1-8, (2018)
  • [10] WANG Lijun, LIU Weiteng, LI Yihang, Et al., Research on double-layer jitter plates in large-feeding mass cleaning system of maize grain harvester, Transactions of the Chinese Society for Agricultural Machinery, 53, 7, pp. 92-102, (2022)
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