Performance Simulation and Experiment of Stirred and Bunch Rice Seeding Device

doi:10.13304/j.nykjdb.2020.0975

Abstract

Abstract:

Aming at the problems of poor fluidity and the difficulty of filling seeds in the filling area resulted by rough surface of rice seeds， a double-cavity rice precision seeding and bunch seeding device with filling and stirring function was designed. The device stired the filling area’s seeds through the stirring type holes protruding from the seed plate to increase the seeds fluidity in the filling area. Besides， the stirring side plate was placed in the first stage of the stirring type holes to direct the seed flow and assist the seed filling. The results of EDEM simulation showed that the stirring holes increased the seeds fluidity of the filling area and assist with the seed filling. This three-factor and three-level orthogonal test was conducted taking the rice seed “Guangliangyou 100” with bud as the test object and the stirring hole depth， the seeding plate rotation speed and the seeding layer height as test factors. Additionally， bench test was conducted on the bunch seeding device’s performance on the JPS-12 test stand. The experimental results showed that when the hole depth was 7 mm， the seeding layer height of the filling area was 50 mm， and the rotation speed of the bunch seeding plate was 30 r·min^-1， the performance of the bunch seeding device was optimal. At this time， the qualified rate of the hole number was 85.7%， the seeding omission index was 1.8%， and the qualified rate of hole spacing was 96.4%. This study provided reference for the design and improving seeding performance of mechanical seeding device.

Key words: seed-stirring hole, precision bunch seeding, rice, precision hole sowing, double cavity bunch seeding, EDEM simulation, bench test

摘要：

针对水稻种子表面粗糙导致的充种区种子流动性差、充种困难问题，设计了一种具有辅助充种搅种的双腔水稻精量穴播排种器。该排种器利用凸于排种盘外的搅种型孔对充种区种子进行扰动，增加种子在充种区的流动性；在搅种型孔首段设置搅种侧板，引导种子流向并辅助充种。EDEM仿真结果表明，该搅种型孔能增加充种区种子流动性，实现辅助充种作用。以破胸露芽的常规稻“广两优100”为研究对象，以搅种型孔深度、排种盘转速和充种区种层高度为试验因素进行三因素三水平正交试验，在JPS-12型排种器性能检测试验台上对该排种器排种性能进行了台架试验，结果表明：当型孔深度7 mm，充种区种层高度50 mm，排种盘转速30 r·min^-1时，穴粒数合格指数达到85.7 %，漏播指数为1.8%，穴距合格指数为96.4%，排种器性能最优。该研究可为机械式水稻精量排种器的结构设计与性能优化提供参考。

关键词: 搅种型孔, 精密排种器, 水稻, 精量穴播, 双腔排种, EDEM仿真, 台架试验

CLC Number:

S223.2

Nanrui TANG, Yong ZHOU, Guozhong ZHANG, Fang LIANG, Huibin KE. Performance Simulation and Experiment of Stirred and Bunch Rice Seeding Device[J]. Journal of Agricultural Science and Technology, 2022, 24(4): 107-115.

唐楠锐, 周勇, 张国忠, 梁方, 柯烩彬. 搅种型孔式水稻穴播排种器的性能模拟与试验[J]. 中国农业科技导报, 2022, 24(4): 107-115.

Figures/Tables 17

References 19

1	张国忠,罗锡文,臧英,等.水稻芽种气力播种技术研究概况[C]//中国农业工程学会学术年会2011年学术年会论文集. 重庆:中国农业工程学会,2011.
2	罗锡文,王在满,蒋恩臣,等.型孔轮式排种器弹性随动护种带装置设计[J].农业机械学报,2008,39(12):60-63.
	LUO X W, WANG Z M, JIANG E C, et al.. Design of disassemble rubber guard device for cell wheel feed [J]. Trans. Chin. Soc. Agric. Machin., 2008, 39(12):60-63.
3	张国忠,臧英,罗锡文,等.水稻气力式排种器导向型搅种装置的设计与试验[J].农业工程学报,2013,29(12):1-8.
	ZHANG G Z, ZANG Y, LUO X W, et al.. Design and experiment of oriented seed churning device on pneumatic seed metering device for rice [J]. Trans. Chin. Soc. Agric. Eng., 2013, 29(12):1-8.
4	张翔,杨然兵,尚书旗.内侧充种圆盘排种器防伤种装置的设计[J].农机化研究,2014,36(10):75-78.
	ZHANG X, YANG R B, SHANG S Q. Design of the anti-injury device for the inside of the disc seeding device [J]. J. Agric. Mech. Res., 2014, 36(10):75-78..
5	廖庆喜,张朋玲,廖宜涛,等.基于EDEM的离心式排种器排种性能数值模拟[J].农业机械学报,2014,45(2):109-114.
	LIAO Q X, ZHANG P L, LIAO Y T, et al.. Numerical simulation on seeding performance of centrifugal rape-seed metering device based on EDEM [J]. Trans. Chin. Soc. Agric. Machin., 2014, 45(2):109-114..
6	张涛,刘飞,赵满全,等.基于离散元的排种器排种室内玉米种群运动规律[J].农业工程学报,2016,32(22):27-35.
	ZHANG T, LIU F, ZHAO M Q, et al.. Movement law of maize population in seed room of seed metering device based on discrete element method [J]. Trans. Chin. Soc. Agric. Eng., 2016, 32(22):27-35.
7	丛锦玲,廖庆喜,曹秀英,等.油菜小麦兼用排种盘的排种器充种性能[J].农业工程学报,2014,30(8):30-39.
	CONG J L, LIAO Q X, CAO X Y, et al.. Seed filling performance of dual-purpose seed plate in metering device for both rapeseed & wheat seed [J]. Trans. Chin. Soc. Agric. Eng., 2014, 30(8):30-39.
8	张泽平,马成林.精播排种器及排种理论研究进展[J].吉林工业大学学报,1995,25(4):112-117.
	ZHANG Z P, MA C L. The Development of the seed-metering device for precision planter and its theoretical study [J]. J. Jilin Univ. Technol., 1995, 25(4):112-117.
9	刘宏新.大豆密植平播机关键部件研究及整体设计[M]. 北京:中国农业出版社,2007:1-173.
	LIU H X. Research on Key Components and whole design of soybean planting and planting machine [M]. Beijing: China Agricultural Press, 2007.
10	李兆东,王晴晴,张亚兰,等.倾斜抛物线型孔轮式小麦供种装置设计与试验[J].农业机械学报,2018,49(5):123-131.
	LI Z D, WANG Q Q, ZHANG Y L, et al.. Design and experiment of inclined parabolic cell wheel in seed feeding device for wheat [J]. Trans. Chin. Soc. Agric. Mach., 2018, 49(5):123-131.
11	于恩中.水稻芽种物料特性的试验研究[D].长春:吉林农业大学,2004.
	YU E Z. Experimental study on material characteristics of rice bud seeds [D]. Changchun: Jilin Agricultural University, 2004.
12	张国忠,张沙沙,杨文平,等.双腔侧充种式水稻精量穴播排种器的设计与试验[J].农业工程学报,2016,32(8):9-17.
	ZHANG G Z, ZHANG S S, YANG W P, et al.. Design and experiment of double cavity side-filled precision hole seed metering device for rice [J]. Tran. Chin. Soc. Agric. Eng., 2016, 32(8):9-17.
13	王云霞,梁志杰,张东兴,等.基于离散元的玉米种子颗粒模型种间接触参数标定[J].农业工程学报,2016,32(22):36-42.
	WANG Y X, LIANG Z J, ZHANG D X, et al.. Calibration method of contact characteristic parameters for corn seeds based on EDEM [J]. Trans. Chin. Soc. Agric. Eng., 2016, 32(22):36-42.
14	徐浩,陶栋材,陶韵晖,等.基于EDEM的水稻槽轮排种器排种仿真与试验研究[J].中国农业科技导报,2017,20(3):64-70.
	XU H, TAO D C, TAO Y H, et al.. Simulation and experimental research on rice seed metering device based on EDEM [J]. J. Agric. Sci. Technol., 2017, 20(3):64-70.
15	杨兆文,刘星福,李问盈. 单粒(精密)播种机试验方法: [S].北京:中国标准出版社, 2005.
16	李小利.勺式取种与活塞扎穴组合式水稻排种器研究[D].哈尔滨:东北农业大学,2018.
	LI X L. Study on rice seed metering device with spoon-type seed collecting and piston hole-setting [D]. Harbin: Northeast Agricultural University, 2018.
17	陈福德.玉米精密排种器排种性能的试验研究[D].呼和浩特:内蒙古农业大学,2012.
	CHEN F D. Experimental study on the seeding performance of corn precision seeder [D]. Hohhot: Inner Mongolia Agricultural University, 2012.
18	邢赫,王在满,罗锡文,等.气力式水稻穴播机播种精度与田间成苗率关系的试验研究[J].农业工程学报,2018, 34(336):50-56.
	XING H, WANG Z M, LUO X W, et al.. Experimental study on relationship of seeding precision and germination rate in field of pneumatic rice hill-drop drilling planter [J]. Trans. Chin. Soc. Agric. Eng., 2018, 34(336):50-56.
19	ZHANG G Z, YING Z, LUO X W, et al.. Design and indoor simulated experiment of pneumatic rice seed metering device [J]. Int. J. Agric. Biol. Eng., 2015, 8(4):10-18.

项目Items	泊松比Poisson’s ratio	剪切模量Shear modulus/Pa	密度Density/（kg·m^-3）
水稻种子Rice seed	0.3	1.82×10⁸	1 125
外壳shell	0.5	1.77×10⁸	1 180
种刷Brush	0.4	1.00×10⁸	1 150

项目Items	泊松比Poisson’s ratio	剪切模量Shear modulus/Pa	密度Density/（kg·m^-3）
水稻种子Rice seed	0.3	1.82×10⁸	1 125
外壳shell	0.5	1.77×10⁸	1 180
种刷Brush	0.4	1.00×10⁸	1 150

项目Item	弹性恢复系数 Coefficient of restitution	滑动摩擦系数 Coefficient of sliding friction	滚动摩擦系数 Coefficient of rolling friction
水稻种子Rice seed	0.30	0.56	0.01
水稻-外壳Rice-shell	0.50	0.50	0.01
种刷-水稻Brush-rice	0.45	0.50	0.01

项目Item	弹性恢复系数 Coefficient of restitution	滑动摩擦系数 Coefficient of sliding friction	滚动摩擦系数 Coefficient of rolling friction
水稻种子Rice seed	0.30	0.56	0.01
水稻-外壳Rice-shell	0.50	0.50	0.01
种刷-水稻Brush-rice	0.45	0.50	0.01

转速 Rotating speed /（r·min^-1）	漏播率 Leak seeding rate/%	合格率 Pass rate/%	重播率 Repeat seeding rate/%
25	1.22	89.22	9.55
29	2.22	86.66	11.12
33	3.33	85.34	11.67
37	3.33	80.00	16.67