Design and experiment of full feed flax threshing and cleaning machine

doi:10.3969/j.issn.1004-1524.2022.04.20

Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (4): 831-840.DOI: 10.3969/j.issn.1004-1524.2022.04.20

• Biosystems Engineening • Previous Articles Next Articles

Design and experiment of full feed flax threshing and cleaning machine

QU Jiangfei¹(), ZHAO Wuyun¹^,^*(), ZHAO Yiming¹, DAI Fei¹, SHI Ruijie¹, LI Yajun², FU Qiufeng², LI Yanwei²

1. Mechanical and Electrical Engineering College, Gansu Agricultural University, Lanzhou 730070, China
2. Jiuquan Aokai Seed Machinery Co., Ltd., Jiuquan 730010, Gansu, China

Received:2021-04-24 Online:2022-04-25 Published:2022-04-28
Contact: ZHAO Wuyun

Abstract

Abstract:

Based on the harvest mode and flax characteristics in northwest China, a full feed flax threshing and cleaning machine was developed. The threshing device adopted the threshing drum consisting of corrugated rod and cutter teeth, and grid concave, while the cleaning device adopted the combination mode of vibrating screen and suction fan. The complex materials were threshed and cleaned through screening and air separation and screening. The biological characteristics of flax were measured, and the key component parameters of the full feed flax threshing and cleaning machine were determined according to the measured data, and were numerically simulated by flow field analysis. The results of the prototype test showed that the removal rate of the working prototype was 97.27%, the impurity content was 2.74%, the crushing rate was 1.86%, and the loss rate was 3.25%, which met the requirements of the operation performance standard.

Key words: flax, threshing, cleaning, flow field analysis

CLC Number:

S225.2

QU Jiangfei, ZHAO Wuyun, ZHAO Yiming, DAI Fei, SHI Ruijie, LI Yajun, FU Qiufeng, LI Yanwei. Design and experiment of full feed flax threshing and cleaning machine[J]. Acta Agriculturae Zhejiangensis, 2022, 34(4): 831-840.

Figures/Tables 9

References 24

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指标Index	参数Parameter
茎秆整株平均长度Average length of whole stalk/mm	448.2
茎秆(人工去叶、枝)平均长度Average length of stalk (artificial removal of leaf and branch)/mm	221.7
茎秆平均直径Average diameter of stalk/mm	2.11
单株平均结果穗数Average number of spikelets per plant	20.2
蒴果平均尺寸Average size of capsule/(mm×mm×mm)	8.15×7.83×7.48
茎秆含水率Stem moisture content/%	9.52

指标Index	参数Parameter
茎秆整株平均长度Average length of whole stalk/mm	448.2
茎秆(人工去叶、枝)平均长度Average length of stalk (artificial removal of leaf and branch)/mm	221.7
茎秆平均直径Average diameter of stalk/mm	2.11
单株平均结果穗数Average number of spikelets per plant	20.2
蒴果平均尺寸Average size of capsule/(mm×mm×mm)	8.15×7.83×7.48
茎秆含水率Stem moisture content/%	9.52

部位 Site	拉伸弹性模量 Tensile modulus of elasticity/ MPa	抗拉强度 Tensile strength/ MPa	最大拉伸力 Maximum tensile force/N	弯曲弹性模量 Bending modulus of elasticity/MPa	抗弯强度 Bending strength/ MPa	最大弯曲力 Maximum bending force/N	剪切强度 Shear strength/ MPa	剪切最大载荷 Maximum shear load/N
上部Upper part	5 278.63	64.03	56.19	56.65	0.54	5.69	0.12	18.89
中部Central part	9 668.95	190.27	186.66	120.19	1.73	15.34	0.18	28.58
下部Lower part	3 708.06	74.77	169.90	109.70	2.46	20.50	0.31	49.01

部位 Site	拉伸弹性模量 Tensile modulus of elasticity/ MPa	抗拉强度 Tensile strength/ MPa	最大拉伸力 Maximum tensile force/N	弯曲弹性模量 Bending modulus of elasticity/MPa	抗弯强度 Bending strength/ MPa	最大弯曲力 Maximum bending force/N	剪切强度 Shear strength/ MPa	剪切最大载荷 Maximum shear load/N
上部Upper part	5 278.63	64.03	56.19	56.65	0.54	5.69	0.12	18.89
中部Central part	9 668.95	190.27	186.66	120.19	1.73	15.34	0.18	28.58
下部Lower part	3 708.06	74.77	169.90	109.70	2.46	20.50	0.31	49.01

指标Index	参数Parameter
整机尺寸(长×宽×高)Overall size (length×width×height)/(mm×mm×mm)	2 080×1 830×1 250
整机(不含底盘轮胎)质量Overall weight (excluding chassis tires)/kg	260
滚筒型式Drum type	纹杆+刀齿组合型 Combined with corrugated rod and cutter teeth
清选型式Cleaning type	凹板筛+振动筛+吸杂风机 Concave screen+vibrating screen+suction fan
电机功率Motor power/kW	7.5
滚筒转速Drum rotation speed/(r·min^-1)	0~1 040
振动筛前后振幅Front and back amplitude of vibrating screen/mm	0~30
吸杂风机变频频率Conversion frequency of suction fan/Hz	0~55
风机类型Fan type	离心式Centrifugal type
脱粒间隙Threshing clearance/mm	16~25
生产率Productivity/(kg·h^-1)	500~1 200

Design and experiment of full feed flax threshing and cleaning machine

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