Abstract
According to the actual situation of higher energy consumption, as well as the greater fluctuations of yield and unstable feed quantity of suction nozzle in pneumatic conveying, the mechanism of airflow disturbance was analyzed. The grain suction nozzle of airflow disturbance was designed by using return air of positive pressure of pneumatic conveying as disturbed gas source, which could increase mixture between grain and airflow of grain inlet, by helping grain entering system and energy transmitting as well as converting. The use of separator of large curvature elbow had advantages of one wind multipurpose, including anti-collision, anti-broken, dust removal, energy saving and loss reduction. Results showed that the output of pneumatic conveying and efficiency of fan were the highest when the disturbed gas flow was 11%～13% of fan air volume, with the velocity of airflow disturbance at 16～18 m/s.
Publication Date
8-28-2017
First Page
90
Last Page
93,209
DOI
10.13652/j.issn.1003-5788.2017.08.020
Recommended Citation
Jihuan, WANG and Qijue, LIU
(2017)
"Design and analysis for key parts of pneumatic conveying of airflow disturbance,"
Food and Machinery: Vol. 33:
Iss.
8, Article 20.
DOI: 10.13652/j.issn.1003-5788.2017.08.020
Available at:
https://www.ifoodmm.cn/journal/vol33/iss8/20
References
[1] 钱东平, 程庆会, 李国昉, 等. 降低气力输送小麦能耗的试验研究[J]. 农业工程学报, 2003, 19(3): 108-111.
[2] 楼建勇, 林江. 气力输送系统的研究现状及发展趋势[J]. 轻工机械, 2008, 26(3): 4-7.
[3] 张伟, 刘广彪, 程松. 气力卸船机双筒型吸嘴结构分析与改进[J]. 有色矿冶, 2012(3): 78-79, 91.
[4] 王伟. 长距离气力输送堵塞问题关键技术的研究[D]. 淄博: 山东理工大学, 2013: 12-24.
[5] JR O L S , NORILER D , WIGGERS V R， et al. Cyclone optimization by complex method and CFD simulation[J]. Powder Technology, 2015, 277: 11-21.
[6] 王蓉, 王华. 国产吸粮机与进口吸粮机比较[J]. 粮食流通技术, 2005(2): 13-14, 21.
[7] 吴建章, 刘秀芳, 温长春. 吸粮机双筒型吸嘴性能的研究[J]. 粮食与饲料工业, 2005(12): 16-17.
[8] 吴建章, 胡健. 吸粮机中叶轮式闭风器的气密性研究[J]. 粮食与饲料工业, 2009(11): 11-13.
[9] 刘秀芳. 吸粮机单筒型吸嘴性能的研究[J]. 河南工业大学学报: 自然科学版, 2005(1): 75-77.
[10] 张贝贝, 柳波, 任昊君. 吸粮机气力输送效率优化设计仿真[J]. 计算机仿真, 2016, 33(10): 207-211.
[11] 丁问司, 何祥滨. 吸粮机三级离心风机内部流场的数值模拟[J]. 农业工程学报, 2011, 27(11): 78-84.
[12] 王明旭, 秦超, 李永祥, 等. 气力输送过程中粮食颗粒的输送特性研究[J]. 农机化研究, 2014(9): 18-22.
[13] 沈骝, 梁财, 陈晓平, 等. 气力输送中不同物料的流动特性及倾斜管阻力特性[J]. 东南大学学报: 自然科学版, 2014, 44(5): 975-980.
[14] MA A C, WILLIAMS K C, ZHOU J M, et al. Numerical study on pressure prediction and its main influence factors in pneumatic conveyors[J]. Chemical Engineering Science, 2010, 65(23): 6 247-6 258.
[15] LIANG Cai, CHEN Xiao-ping, ZHAO Chang-sui, et al. Flow characteristics and shannon entropy analysis of densephase pneumatic conveying of variable moisture content under high pressure [J]. Chemical Engineering and Technology, 2007, 30(7): 926-931.
[16] 杨伦, 谢一华. 气力输送工程[M]. 北京: 机械工业出版社, 2006: 107-118.
[17] 侯国祥. 流体力学[M]. 北京: 机械工业出版社, 2015: 311-355.