气力红花采收机集花罩结构优化设计
|
摘要
红花采摘装置集花罩是气力红花采收机的关键工作部件,其外部形状结构是影响花丝采收效率的主要因素。气力红花采收机集花罩的设计以往均是以经验为主,基于经验设计,对集花罩进行结构设计。以圆柱形集花罩和锥形集花罩为研究对象,进行了红花扰动效果的对比试验。高速摄像试验结果表明:集花罩模型结构为大口朝下的锥形结构时花丝扰动效果较好,有利于花丝的采摘收集。因此,以大口朝下的锥形集花罩为研究对象,针对不同结构的集花罩,进行内部流场仿真,优化集花罩结构。仿真结果表明:外部形状结构为直板式的集花罩内部流场模拟效果最佳,最适宜花丝的采摘与收集。田间试验表明:优化后的集花罩结构可达到红花采收要求。上述研究成果可为实现红花采收机相关工作参数优化提供参考。
The set flower hood of safflower picking device is an important working parts of pneumatic safflower harvesting machine,and the outer shape of the set flower hood is the main factor affecting the picking and collecting effect of the filaments. The design of the set flower hoods is based on experience in the past,so based on experience,the design of the set flower hood is carried out. A comparative test of the effect of safflower disturbance was carried out with the cylindrical set flower cover and the conical set flower hood as the research object. The results of high-speed camera test show that when the model structure of the set flower hood is a large-mouth-down conical structure,the perturbation effect of the filaments is better,which is beneficial to the picking and collecting of the filaments. Therefore,a large-mouth-down conical set flower cover is used as the research object,for the different structure of the set flow hood,the internal flow field simulation is carried out,and then the set flower cover structure is optimized. The simulation results show that when the internal flow field simulation is performed,the outer shape of the structure for the straight-type set flower cover of the simulation effect is the best. The field experiments shown that the optimized set flower hood can meet the requirements of safflower harvesting. The above research results can provide reference for the optimization of the relevant working parameters of safflower harvesting machine.
The set flower hood of safflower picking device is an important working parts of pneumatic safflower harvesting machine,and the outer shape of the set flower hood is the main factor affecting the picking and collecting effect of the filaments. The design of the set flower hoods is based on experience in the past,so based on experience,the design of the set flower hood is carried out. A comparative test of the effect of safflower disturbance was carried out with the cylindrical set flower cover and the conical set flower hood as the research object. The results of high-speed camera test show that when the model structure of the set flower hood is a large-mouth-down conical structure,the perturbation effect of the filaments is better,which is beneficial to the picking and collecting of the filaments. Therefore,a large-mouth-down conical set flower cover is used as the research object,for the different structure of the set flow hood,the internal flow field simulation is carried out,and then the set flower cover structure is optimized. The simulation results show that when the internal flow field simulation is performed,the outer shape of the structure for the straight-type set flower cover of the simulation effect is the best. The field experiments shown that the optimized set flower hood can meet the requirements of safflower harvesting. The above research results can provide reference for the optimization of the relevant working parameters of safflower harvesting machine.
引文
[1]王兆木,阿尔斯坦格罗夫·山布·山明.红花油的营养价值与保健作用[J].新疆农业科学,2006,43(1):57-60.(Wang Zhao-mu,Aersitangeluofu·Shanbu·Shanming.The nutritive value and health protection role of safflower oil[J].Xinjiang Agricultural Sciences,2006,43(1):57-60.)
[2]葛云,张立新,韩丹丹.红花花丝机械采收的现状及发展趋势[J].农机化研究,2014,36(11):265-268.(Ge Yun,Zhang Li-xin,Han Dan-dan.Current state and development trend of the mechanical harvesting on saffron filaments[J].Journal of Agricultural Mechanization Research,2014,36(11):265-268.)
[3]Anil K.Rajvanshi.Development of safflower petal collector[J].Nimbkar Agricultural Research Institute(NARI),2005,2(4):80-85.
[4]葛云,张立新,谷家伟.对辊式红花采收装置参数优化及试验[J].农业工程学报,2015,31(21):35-42.(Ge Yun,Zhang Li-xin,Gu Jia-wei.Parameter optimization and experiment of dual roller harvesting device for safflower[J].Transactions of the Chinese Society of Agricultural Engineering,2015,31(21):35-42.)
[5]李俊妮,栗秀萍,刘有智.基于Fluent的高速旋转圆盘表面流场的数值模拟[J].机械设计与制造,2013(2):7-11.(Li Jun-ni,Li Xiu-ping,Liu You-zhi.Numerical simulation for surface flow field of high speed rotating disk based on fluent[J].Machinery Design&Manufacture,2013(2):7-11.)
[6]Manjula EVPJ,Hiromi Ariyaratne W K,Ratnayake C.A review of CFD modelin g studies on pneumatic and challenges in modeling offshore drill cuttings transport[J].Powder Technology,2017(305):782-793.
[7]姚家君,郭彬彬,丁为民.基于鹅舍气流场CFD模拟的通风系统结构优化与验证[J].农业工程学报,2017,33(3):214-220.(Yao Jia-jun,Guo Bin-bin,Ding Wei-min.Structure optimization and validation of goose house ventilation system based on airflow field simulation by CFD[J].Transactions of the Chinese Society of Agricultural Engineering,2017,33(3):214-220.)
[8]石丽建,汤方平,谢荣盛.基于CFD计算的轴流泵改型设计和效果[J].农业工程学报,2015,31(4):97-102.(Shi Li-Jian,Tang Fang-ping,Xie Rong-sheng.Design of axial flow pump modification and its effect based on CFD calculation[J].Transactions of the Chinese Society of Agricultural Engineering,2015,31(4):97-102.)
[9]陈树人,肖君,饶师任.黄花苜蓿收获机吹送装置气流速度场CFD分析[J].农业工程学报,2016,32(12):39-46.(Chen Shu-ren,Xiao Jun,Rao Shi-ren.CFD numerical analysis of airflow blowing velocity-field of medicago hispida harvester[J].Transactions of the Chinese Society of Agricultural Engineering,2016,32(12):39-46.)
[10]庞明军,陆怡,包健.集气罩的设计原理及其流场数值模拟[J].轻工机械,2006,24(1):45-47.(Pang Ming-jun,Lu Yi,Bao Jian.The design principle of the gas trap hood and numerical simulation of its flow Field[J].Light Industry Machinery,2006,24(1):45-47.)
[2]葛云,张立新,韩丹丹.红花花丝机械采收的现状及发展趋势[J].农机化研究,2014,36(11):265-268.(Ge Yun,Zhang Li-xin,Han Dan-dan.Current state and development trend of the mechanical harvesting on saffron filaments[J].Journal of Agricultural Mechanization Research,2014,36(11):265-268.)
[3]Anil K.Rajvanshi.Development of safflower petal collector[J].Nimbkar Agricultural Research Institute(NARI),2005,2(4):80-85.
[4]葛云,张立新,谷家伟.对辊式红花采收装置参数优化及试验[J].农业工程学报,2015,31(21):35-42.(Ge Yun,Zhang Li-xin,Gu Jia-wei.Parameter optimization and experiment of dual roller harvesting device for safflower[J].Transactions of the Chinese Society of Agricultural Engineering,2015,31(21):35-42.)
[5]李俊妮,栗秀萍,刘有智.基于Fluent的高速旋转圆盘表面流场的数值模拟[J].机械设计与制造,2013(2):7-11.(Li Jun-ni,Li Xiu-ping,Liu You-zhi.Numerical simulation for surface flow field of high speed rotating disk based on fluent[J].Machinery Design&Manufacture,2013(2):7-11.)
[6]Manjula EVPJ,Hiromi Ariyaratne W K,Ratnayake C.A review of CFD modelin g studies on pneumatic and challenges in modeling offshore drill cuttings transport[J].Powder Technology,2017(305):782-793.
[7]姚家君,郭彬彬,丁为民.基于鹅舍气流场CFD模拟的通风系统结构优化与验证[J].农业工程学报,2017,33(3):214-220.(Yao Jia-jun,Guo Bin-bin,Ding Wei-min.Structure optimization and validation of goose house ventilation system based on airflow field simulation by CFD[J].Transactions of the Chinese Society of Agricultural Engineering,2017,33(3):214-220.)
[8]石丽建,汤方平,谢荣盛.基于CFD计算的轴流泵改型设计和效果[J].农业工程学报,2015,31(4):97-102.(Shi Li-Jian,Tang Fang-ping,Xie Rong-sheng.Design of axial flow pump modification and its effect based on CFD calculation[J].Transactions of the Chinese Society of Agricultural Engineering,2015,31(4):97-102.)
[9]陈树人,肖君,饶师任.黄花苜蓿收获机吹送装置气流速度场CFD分析[J].农业工程学报,2016,32(12):39-46.(Chen Shu-ren,Xiao Jun,Rao Shi-ren.CFD numerical analysis of airflow blowing velocity-field of medicago hispida harvester[J].Transactions of the Chinese Society of Agricultural Engineering,2016,32(12):39-46.)
[10]庞明军,陆怡,包健.集气罩的设计原理及其流场数值模拟[J].轻工机械,2006,24(1):45-47.(Pang Ming-jun,Lu Yi,Bao Jian.The design principle of the gas trap hood and numerical simulation of its flow Field[J].Light Industry Machinery,2006,24(1):45-47.)