双风道风筛式胡麻脱粒物料分离清选机设计与试验  

Design and Test of Double Duct System of Air-screen Separating and Cleaning Machine for Flax Threshing Material

作　　者：戴飞 付秋峰 赵武云 史瑞杰 宋学锋 张仕林 DAI Fei;FU Qiufeng;ZHAO Wuyun;SHI Ruijie;SONG Xuefeng;ZHANG Shilin(College of Mechanical and Electrical Engineering,Gansu Agricultural University,Lanzhou 730070,China;Jiuquan OK Seed Machinery Co.,Ltd.,Jiuquan 735000,China;College of Mechanical and Electronic Engineering,Northwest A&F University,Yangling,Shaanxi 712100,China)

机构地区：[1]甘肃农业大学机电工程学院,兰州730070 [2]酒泉奥凯种子机械股份有限公司,酒泉735000 [3]西北农林科技大学机械与电子工程学院,陕西杨凌712100

出　　处：《农业机械学报》2021年第4期117-125,247,共10页Transactions of the Chinese Society for Agricultural Machinery

基　　金：现代农业产业技术体系专项资金项目(CARS-14-1-28);甘肃农业大学伏羲青年英才培养计划项目(Gaufx-03Y01);甘肃省重点研发计划项目(20YF3WA019)。

摘　　要：为进一步提升胡麻脱粒物料分离清选机械化作业水平,针对胡麻脱粒物料各组分类型,提出"先气流清、再风筛选"的作业模式,制订了胡麻脱粒物料分离清选作业工艺流程,设计了双风道风筛式胡麻脱粒物料分离清选机。对三级振动筛分装置、双风道杂余集料装置及吸杂除尘装置等关键作业部件进行设计选型与参数计算,获得不同组分的胡麻脱粒物料在三级筛面上不同运动状态下振动筛分装置曲柄连杆机构运动参数必须满足的条件。样机性能试验表明,当振动喂料系统电磁激振器振幅控制在14~18 mm、前风道风量调节手柄在2~4挡位、后风道风量调节手柄在4~6挡位、三级振动筛分装置振动频率在2~6 Hz时,双风道风筛式胡麻脱粒物料分离清选机的籽粒清洁率为97.16%、夹带总损失率为1.12%,试验结果满足设计要求,能够实现对胡麻收获期脱粒物料不同组分的分离清选作业。Flax is one of the important oil crops in Northwest China,and Gansu Province is one of the main producing areas of flax. To enhance the mechanization level of separating and cleaning of flax threshing materials,according to the different components types of flax materials,the operation mode of"air cleaning first, and then air-screen separating " was put forward, the separation-cleaning technological process of flax threshing materials was developed,and a double duct system of air-screen separating and cleaning machine for flax threshing material was designed. Through design selection and parameter calculation of key operating components of the prototype,the important working parameters of the three stage vibrating screen,double duct impurities aggregate device and dust suction device were determined. The working conditions for the parameters of the crank connecting rod of the vibrating screen obtained with different components of flax material were in different motion states on three-stage screen surface. For the relevant work performance test of prototype,when the electromagnetic exciter amplitude of the vibration feeding system was controlled at 14 ~ 18 mm,the front duct air volume control handle in2 ~ 4 gear,the rear duct air volume control handle in 4 ~ 6 gear,the vibration frequency of three-stage vibrating screen was 2 ~ 6 Hz,the operating machine had a strong adaptability to flax threshing material.After the operation of the double duct system of air-screen separating and cleaning machine for flax threshing material,the cleaning rate of grains was 97. 16%,the entrained loss rate of was 1. 12%,the experimental results met the design requirements of operation machine. The research results can provide an important reference for small grain crop threshing material separating and cleaning equipment development.

关 键 词：胡麻脱粒物料 双风道 风筛式 分离清选机 

分 类 号：S225.99[农业科学—农业机械化工程]