Simulation and Experiment on Seed-filling Performance of Pneumatic Disc Seed-metering Device for Mini-tuber
Abstract
In order to realize the mechanized planting of mini-tuber and solve the problem of large seed filling, a vibrating feeding pneumatic disc seed-metering device for mini-tuber was designed. The seed-metering device was composed of metering plate, air chamber, frame and vibrating seed feeding device. Seeding-filling performance was the key factor that influenced the properties of metering device. In order to improve the seed-filling performance of the pneumatic disc seed-metering device, Lishu No.6 mini-tuber was adopted as sowing object, the method of UDEC was used as research technique, meanwhile, variance yields of average normal stress was considered as the optimizing targets. Through single factor experiment, the vibration frequency and vibration amplitude were numerically simulated respectively. It can be found that the experimental phenomenon and effect were in consistent with the simulation ones. Results showed that vibration frequency and vibration amplitude increased variance yields of average normal stress of seeds, hence disturbance of seeds was enhanced. Based on the three-factor five-level quadratic orthogonal rotating combination test method, the influence of vibration frequency, vibration amplitude and layer height on sowing performance were explored. The regression equations of the three factors and five levels were fitted through the processing by Design-Expert 8.0.6 (experimental design expert) software. Based on the results of examination, it can be found that the fitting of the equation was good, and the best parameter combination was the operating speed of 2.4km/h, negative pressure of 6kPa,vibration frequency of 6.5~6.9Hz, vibration amplitude of 20~21mm and layer height of 70mm. Under the optimal condition, the qualified index was greater than 95, and the multiple index as well as the missing index was less than 2.5. It showed that the vibrating feeding pneumatic disc seed-metering device met the standard and requirements by comparing the results with the national standard. The research approach was suitable for the exploitation of mini-tuber seed-metering, and it provided a theoretical reference for the design of pneumatic disc seed-metering device.
Keywords: mini-tuber, pneumatic seed-metering device, seed-filling performance, numerical simulation, experiment
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www. j-csam. org/jcsam/ch/reader/view_abstract. aspx*' flag = l&tiIe_no = ZUI3U814&journaI_icI = jcsam. UU1; IU. 0U4I/J. issn. 1000-1298.2013.08.014. ZHAO Jiale, JIA Honglei, JIANG Xinming, et al. Suction type offset double disc seed metering device of soybean seeder [J/OL] . Transactions of the Chinese Society for Agricultural Machinery, 2013, 44(8) : 78 -83. (in Chinese)
http://www.j-csam.org/jcsam/ch/reader/view_abstract. aspx? flag = l&file_no = 2012sl 1 &journal_id = jcsam. DOI; 10. 6041/j. issn. 1000-1298.2012. SO. 011. WANG Yanyao, LI Jiandong, WANG Dongwei, et al. Orthogonal experiment optimization on air-suction precision seed-metering device[ J/OL]. Transactions of the Chinese Society for Agricultural Machinery, 2012, 43(Supp. ) ; 54 -58, 89. (in Chinese)
ZUO Yanjun, MA Xu, YU Dalue, et al. Flow field numerical simulation of suction cylinder-seeder for rice bud seed with socket slot[ J ]. Transactions of the Chinese Society for Agricultural Machinery, 2011 , 42(2) ;58 -62. (in Chinese)
http://www.j- csam.org/jcsam/ch/reader/view_abstract. aspx? flag = l&file_no = 20120209&journal_id = jcsam. 1)01: 10. 6041/j. issn. 1000- 1298.2012.02.009. LIU Jia, HUI Гао, ZHANG Dongxing, et al. Mechanical-pneumatic combined corn precision seed-metering device [ J/OL ] . Transactions of the Chinese Society for Agricultural Machinery, 2012, 43(2) : 43 -47. (in Chinese)
2013,44(2) :48 -51 ,74. http://www.j- csam.org/jcsam/ch/reader/view_abstract. aspx? flag = l&file_no = 20130210&journal_ id = jcsam. DOI; 10. 6041/j. issn. 1000- 1298.2013.02.010. ZHAO Xiaoshun, YU Huali, ZHANG Jinguo, et al. Slot-type pneumatic precise wheat seed-metering device J/OL . Transactions of the Chinese Society for Agricultural Machinery, 2013, 44(2) : 48 -51 , 74. ( in Chinese)
GAIKWAD В В, SIROHI N P S. Design of a low-cost pneumatic seeder for nursery plug trays[J]. Biosystems Engineering, 2008, 99(3) : 322 -329.
http://www. j-csam. org/jcsam/ch/reader/view_abstract. aspx? flag = l&file_no = 2012sl0&joumal_id = jcsam. DOI: 10. 6041/j. issn.1000-1298.2012. SO. 010. YANG Li, Sill Song, CUI Tao, et al. Air-suction corn precision metering device with mechanical supporting plate to assist carrying seed[J/0L]. Transactions of the Chinese Society lor Agricultural Machinery, 2012, 43(Supp. ) : 48 -53. ( in Chinese)
ZHAO Zhan, LI Yaoming, CHEN Jin, et al. Dynamic analysis of seeds pick-up process for vacuum-cylinder seeder [ J ]. Transactions of the CSAE, 2011 , 27(7) : 112 -116. (in Chinese)
ZHANG Shiping, X1A Jing, CHEN Jin. Study on equipment of vibration air-suction vegetable tray precise seeder [J ]. Journal of Agricultural Mechanization Research, 2007, 29(8): 80 -83. (in Chinese)
ZHOU Haibo. Research and application on key technologies of precision seeder for tray nursing seedings of rice[ D]. Changchun: Jilin University, 2009. (in Chinese)
WANG Zhaohui, MA Xu, JIA Ruichang. The working parameters of suction effect on the performance of super rice seedling planting partsfj]. Transactions of the CSAE, 2009, 25(8) ; 88 -92. (in Chinese)
YANG Mingjin, QIU Bing, YANG Ling, et al. Metering performance of the vibration vacuum precision tray seeder [ J ]. Transactions of the CSAE, 2010, 26(9) ; 139 -143. (in Chinese)
GONG Zhiqiang. Theoretical and experimental study on vacuum-vibration tray precision seeding device D]. Zhenjiang:Jiangsu University, 2013. (in Chinese)
LU Fangyuan, MA Xu, Q1 Long, et al. Parameter optimization and experiment of vibration seed-uniforming device for hybrid rice based on discrete element method [ J ]. Transactions of the CSAE, 2016,32( 10) ; 17 -24. (in Chinese)
http: // www. j-csam. org/jcsam/ch/reader/view_abstract. aspx? flag = 1 &file_no = 20160505&journal_id = jcsam. D01:10. 6041/ j. issn. 1000-1298.2016.05.005. LAI Qinghui, GAO Xiaojun, ZHANG Zhihong. Simulation and experiment of seed-filling pneumatic cylinder seed-metering device for Panax notoginseng [J/OL ]. Transactions of the Chinese Society for Agricultural Machinery, 2016,47 ( 5 ) ; 27 - 37. (in Chinese)
CHEN Jin, LI Yaoming. Study on seeds movement law in sowing test stand with suction and vibration [ J ] . Transactions of the Chinese Society for Agricultural Machinery, 2002, 33( 1 ) : 47 -50. ( in Chinese)
http://www.j- csam. org/jcsam/ch/reader/view_abstract. aspx? flag = l&file_no = 20161205&journal_ id = jcsam. D01; 10. 6041/j. issn. 1000- 1298.2016.12.005. LAI Qinghui, MAWenpeng, SU Wei. Design anti experiment of pneumatic disc seed-metering device for mini-tuber [ J/OL ]. Transactions of the Chinese Society for Agricultural Machinery, 2016, 47(12); 30 -37. ( in Chinese)
LI Yaoming, QIU Baijing. Vibration analysis of rice seeding test bench [J ]. Transactions of the Chinese Society for Agricultural Machinery, 1998, 29(3) ;43 -47. (in Chinese)
GUARELLA P, PELLERANO A, PASCUZZI S. Experimental and theoretical performance of a vacuum seeder nozzle for vegetable seeds[J]. Journal of Agricultural Engineering Research, 1996,64( 1 ) ; 29 -36.
VAN LIEDEKERKE P, TIJSKEN E, DINTWA E, et al. DEM simulation of the particle flow on a centrifugal fertilizer spreader [J]. Powder Technology, 2009, 190 (3 ) :348 - 360.
YOUSHIYUKI S, CUNDALL P A. Three dimensional DEM simulation of bulk handling by screw conveyors [ J ]. Journal of Engineering Mechanics, 2001 , 127(9) ;864 -872.
http: // www. j-csam. org/jcsam/ch/reader/view_abstract. aspx? flag = 1 &file_no = 20140810&journal_id = jcsam. DO!; 10. 6041/ j. issn. 1000 -1298.2014.08.010. HU Jianping, GUO Kun, ZHOU Cluinjian, et al. Experiment of supplying seeds in box of magnetic precision cylinder-seeder [J/ OL]. Transactions of the Chinese society for Agricultural Machinery, 2014,45(8) ; 61 -65. (in Chinese)
LI Shuai, LI Ye, MA LUao, et al. Simulation analysis of cylindrical chute based on EDEM [ J ]. Coal Mine Machinery, 2014, 33(6) :71 -73. ( in Chinese)
CHEN Jin, ZHOU Han, ZHAO Zhan, et al. Analysis of rice seeds motion on vibrating plate using EDEM[ J ]. Transactions of the Chinese Society for Agricultural Machinery, 201 1 , 42( 10) ; 79 -83,100. ( in Chinese)
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