Design and test of bidirectional tangential flow feeding cyclone separation and cleaning device for rapeseed separation

doi:10.3969/j.issn.1004-1524.2023.05.22

Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (5): 1178-1186.DOI: 10.3969/j.issn.1004-1524.2023.05.22

• Biosystems Engineering • Previous Articles Next Articles

Design and test of bidirectional tangential flow feeding cyclone separation and cleaning device for rapeseed separation

SHEN Yufeng¹(), LUO Haifeng²^,^*(), WU Mingliang², GUAN Chunyun³

1. Changsha Aeronautical Vocational and Technical College, Changsha 410124, China
2. Electromechanical Engineering College, Hunan Agricultural University, Changsha 410128, China
3. Collaporative Innovation Center of Grain and Oil Crops in South China, Changsha 410128, China

Received:2021-12-07 Online:2023-05-25 Published:2023-06-01

Abstract

Abstract:

In order to meet the cleaning requirements of small rapeseed combine harvesters, a two-way cut-in cyclone separation and cleaning device for rapeseed separation was innovatively designed. The key components such as the cylindrical screen, the two-way conveying auger, the two-way cut-in cyclone separator, and the suction fan were designed and parameters were determined. The prototype was trial-produced and the indoor bench test was carried out. A single factor test was carried out with the feeding rate, the speed of the throwing plate and the speed of the suction fan as the factors that had a great impact on the cleaning performance, and the grain cleaning rate and loss rate were selected as the evaluation indexes, so as to find out the better range of the feeding rate, the speed of the throwing plate and the speed of the suction fan. The parameter combination of the feeding rate,the speed of the throwing plate and the speed of the suction fan were optimized. The single factor test results showed that under the condition that the feeding rate did not exceed 0.07 kg·s^-1, the speed of the throwing plate was 600-800 r·min^-1 and the speed of the suction fan was 1 600-1 800 r·min^-1, the cleaning rate was ≥94%, and the cleaning loss rate was ≤8%. The orthogonal test results showed that the primary and secondary factors that affected the cleaning performance were: the speed of the suction fan, the feeding rate, and the speed of the throwing plate. The optimized parameter combination was that the feeding rate was 0.06 kg · s^-1, the speed of throwing plate was 700 r · min^-1, and the speed of suction fan was 1 800 r· min^-1. The corresponding grain cleaning rate was 97.1% and the loss rate was 4.8%, far exceeded the requirements of national standards, with good cleaning performance. The research results provide a theoretical reference for the design and application of the cleaning device of the small rapeseed combine harvester.

Key words: rapeseed separation, two way cut in, cyclone separation, cleaning device

CLC Number:

S233.4

SHEN Yufeng, LUO Haifeng, WU Mingliang, GUAN Chunyun. Design and test of bidirectional tangential flow feeding cyclone separation and cleaning device for rapeseed separation[J]. Acta Agriculturae Zhejiangensis, 2023, 35(5): 1178-1186.

Figures/Tables 12

References 21

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水平 Level	因素Factor
水平 Level	A喂入量 Feeding rate/ (kg·s^-1)	B抛料板转速 Speed of throwing plate/ (r·min^-1)	C吸杂风机转速 Speed of suction fan/ (r·min^-1)
1	0.05	600	1 600
2	0.06	700	1 700
3	0.07	800	1 800

水平 Level	因素Factor
水平 Level	A喂入量 Feeding rate/ (kg·s^-1)	B抛料板转速 Speed of throwing plate/ (r·min^-1)	C吸杂风机转速 Speed of suction fan/ (r·min^-1)
1	0.05	600	1 600
2	0.06	700	1 700
3	0.07	800	1 800

试验号 No.	A/(kg·s^-1)	B/( r·min^-1)	C/( r·min^-1)	清洁率 Cleaning rate/%	损失率 Loss rate/%	清洁率隶属度 Membership degree of cleanliness rate	损失率隶属度 Membership degree of loss rate	综合评分 Comprehensive score
1	0.05	600	1 600	95.4	5.6	0.60	0.01	0.21
2	0.05	700	1 700	96.1	7.8	0.80	0.59	0.67
3	0.05	800	1 800	95.8	9.1	0.71	0.95	0.86
4	0.06	600	1 700	95.2	7.2	0.54	0.43	0.47
5	0.06	700	1 800	96.8	9.3	1.00	1.00	1.00
6	0.06	800	1 600	95.9	6.9	0.74	0.35	0.49
7	0.07	600	1 800	94.1	8.1	0.23	0.68	0.52
8	0.07	700	1 600	93.3	6.7	0.01	0.30	0.19
9	0.07	800	1 700	93.9	6.5	0.17	0.24	0.22

试验号 No.	A/(kg·s^-1)	B/( r·min^-1)	C/( r·min^-1)	清洁率 Cleaning rate/%	损失率 Loss rate/%	清洁率隶属度 Membership degree of cleanliness rate	损失率隶属度 Membership degree of loss rate	综合评分 Comprehensive score
1	0.05	600	1 600	95.4	5.6	0.60	0.01	0.21
2	0.05	700	1 700	96.1	7.8	0.80	0.59	0.67
3	0.05	800	1 800	95.8	9.1	0.71	0.95	0.86
4	0.06	600	1 700	95.2	7.2	0.54	0.43	0.47
5	0.06	700	1 800	96.8	9.3	1.00	1.00	1.00
6	0.06	800	1 600	95.9	6.9	0.74	0.35	0.49
7	0.07	600	1 800	94.1	8.1	0.23	0.68	0.52
8	0.07	700	1 600	93.3	6.7	0.01	0.30	0.19
9	0.07	800	1 700	93.9	6.5	0.17	0.24	0.22

因素 Factor	综合评分Comprehensive score
因素 Factor	K₁	K₂	K₃	R	最优水平 Optimal level
A喂入量Feeding rate	1.74	1.96	0.93	1.03	2
B抛料板转速	1.20	1.86	1.57	0.66	2
Speed of throwing plate
C吸杂风机转速	0.89	1.36	2.38	1.49	3
Speed of suction fan

Design and test of bidirectional tangential flow feeding cyclone separation and cleaning device for rapeseed separation

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