复杂灌溉区悬浮自洁式泵前过滤器优化设计研究

doi:10.13733/j.jcam.issn.2095-5553.2024.09.044

摘要/Abstract

摘要：

针对灌溉区复杂的水质环境导致泵前滤网频繁堵塞需要耗费大量的人力财力等问题，设计一种自动清洗的泵前过滤器。通过滤网出水口压差.P大于预设压差 P作为自动清洗装置控制开启条件，对滤网工作流场进行数学分析，得到控制体体积 Q和包围流体的表面积 S等相关变量的数学关系，对悬浮箱进行每间隔 150 mm采用 50 mm的凸凹特征设计，提高悬浮箱的承载强度，对滤网关键参数进行设计，对水泵为滤网出水口提供的 6种不同压强进行数值模拟，获得滤网出入口压差.P，为预设压差 P的设置提供参考。最后，对 6种不同压强进行试验。结果表明，随滤网出水口压强降低，自动清洗装置启停周期和滤网清洗时间呈现增加的趋势。随着滤网出水口压强降低，滤网出入口压差不断减小，滤网内部叶轮受压力的驱动力减弱，滤网旋转速度变慢，导致滤网清洗需要更长的时间。通过测试试验与应用，过滤器能够有效地阻止砂石和菌藻类生物进入微灌系统，自清洗装置能有效地清洗黏附在滤网上面的砂石和菌藻类生物，完全实现滤网无人清洗，大幅度地降低劳动力。

关键词: 自洁式, 泵前过滤器, 优化设计, 滤网, 压差

Abstract:

In response to the complex water quality environment in irrigation areas，which leads to frequent clogging of the pump front filter and requires a lot of manpower and financial resources，an automatic cleaning pump front filter is designed. The automatic cleaning device controls the opening condition by using the pressure difference .P at the filter outlet greater than the preset pressure difference P. A mathematical analysis was conducted on the working flow field of the filter，and the mathematical relationship between the control volume Q and the surface area S of the surrounding fluid was obtained. The suspension box was designed with a convex concave feature of 50 mm every 150 mm，which improved the bearing strength of the suspension box. The key parameters of the filter were designed，and six different pressures provided by the water pump for the outlet of the filter were numerically simulated. The pressure difference .P between the inlet and outlet of the filter was obtained，providing a reference for setting the preset pressure difference P. Finally， experiments were conducted on six different pressures，and the results showed that as the pressure at the outlet of the filter decreased， the start stop cycle of the automatic cleaning device and the cleaning time of the filter showed an increasing trend. As the pressure at the outlet of the filter decreases，the pressure difference between the inlet and outlet of the filter continuously decreases. The driving force of the internal impeller of the filter is weakened，and the rotation speed of the filter slows down， resulting in a longer cleaning time for the filter. Through the test experiment and application，the filter can effectively prevent the sand and bacteria and algae organisms from entering the micro.irrigation system，and the self.cleaning device can effectively clean the sand and bacteria and algae organisms adhering to the filter screen，which completely realizes the unmanned cleaning of the filter screen and greatly reduces the labor force.

Key words: self-cleaning, pump front filter, optimization design, filter screen, differential pressure ,

中图分类号:

赵瑛 , 张双侠 , 吴玉秀 , 蒋坤 . 复杂灌溉区悬浮自洁式泵前过滤器优化设计研究[J]. 中国农机化学报, 2024, 45(9): 291-296.

Zhao Ying, Zhang Shuangxia, Wu Yuxiu, Jiang Kun. Research on optimization design of suspended self-cleaning pump front filter in complex irrigation area [J]. Journal of Chinese Agricultural Mechanization, 2024, 45(9): 291-296.

参考文献

［ 1］宗全利，刘贞姬，井河义，等 .微灌系统泵前无压网式过滤器过滤效率研究［ J］.水资源与水工程学报， 2023，34（5）：207-214.

Zong Quanli， Liu Zhenji， Jing Heyi， et al. Filtration efficiency of pre.pump pressureless screen filters in micro.irrigation system［J］. Journal of Water Resources and Water Engineering，2023，34（5）：207-214.

［ 2］赵金辉，孔清杰，范习超，等 .自洁式组合真空泵前置过滤器设计与实验测试［ J］.真空科学与技术学报， 2022， 42（9）：658-662.

Zhao Jinhui， Kong Qingjie， Fan Xichao， et al. Self.cleaning combined vacuum pump pre-filter design and experimental testing［J］. Chinese Journal of Vacuum Science and Technolog，2022，42（9）：658-662.

［ 3］宗全利，杨洪飞，刘贞姬，等 .网式过滤器滤网堵塞成因分析与压降计算［ J］.农业机械学报， 2017，48（9）： 215-222.

Zong Quanli，Yang Hongfei，Liu Zhenji，et al. Clogging reason analysis and pressure drop calculation of screen filter［J］. Transactions of the Chinese Society for Agricultural Machinery，2017，48（9）：215-222.

［ 4］黄玲艳，刘贻雄，唐强，等 .低温过滤器堵塞工况下的压降特性研究［ J］.流体机械， 2018，46（7）：9-13.

Huang Lingyan， Liu Yixiong， Tang Qiang， et al. Research on pressure drop characteristics of cryogenic filter under clogging condition［J］. Fluid Machinery，2018，46（7）：9-13.

［ 5］喻黎明，刘凯硕，韩栋，等 .不同工况下 Y型网式过滤器流场数值模拟分析［ J］.农业机械学报， 2022，53（2）： 346-354.

Yu Liming，Liu Kaishuo，Han Dong，et al. Numerical simulation analysis of flow field of Y.screen filter under different working conditions［J］. Transactions of the Chinese Society for Agricultural Machinery，2022，53（2）： 346-354.

［ 6］张凯，喻黎明，刘凯硕，等 .网式过滤器拦截率计算及其影响因素分析［ J］.农业工程学报， 2021，37（5）：123-130.

Zhang Kai，Yu Liming，Liu Kaishuo，et al. Calculation of interception rate of mesh filter and analysis of its influencing factors［J］. Transactions of the Chinese Society of Agricultural Engineering，2021，37（5）：123-130.

［ 7］陶洪飞，沈萍萍，周洋，等 .微灌用泵前微压过滤器的最佳运行工况研究［ J］.灌溉排水学报， 2022，41（6）：72-79.

Tao Hongfei， Shen Pingping， Zhou Yang， et al. Optimizing operating condition of the filters in micro.irrigation pump［J］. Journal of Irrigation and Drainage，2022，41（6）：72-79.

［ 8］杜思琦，黄修桥，李浩，等 .手摇清洗网式过滤器内部流场的数值模拟与性能试验验证［ J］.灌溉排水学报， 2022，41（11）：59-67.

Du Siqi， Huang Xiuqiao， Li Hao， et al. Numerical simulation and experimental study of water flow in manually.operated cleaning screen filter［J］. Journal of Irrigation and Drainage，2022，41（11）：59-67.

［ 9］陶洪飞，滕晓静，马英杰，等 .出水管角度对网式过滤器内部流场影响研究［ J］.节水灌溉， 2017，（8）：21-25，29.

Tao Hongfei，Teng Xiaojing，Ma Yingjie，et al. Influence of outlet angle on the internal flow field of screen filter［J］. Water Saving Irrigation，2017，（8）：21-25，29.

［10］杜飞龙，黄海松，唐世灏，等 .双叶轮作用下流体速度场特性有限元分析［ J］.组合机床与自动化加工技术， 2019（7）：1-4.

Du Feilong，Huang Haisong，Tang Shihao，et al. Finite element analysis of fluid velocity field characteristics under the action of double lmpellers［J］. Modular Machine Tool & Automatic Manufacturing Technique， 2019（7）： 1-4.

［11］李可欣，郑源，胡雪原 .基于流体体积模型的叶轮宽径比对水车性能的影响［ J］.排灌机械工程学报， 2022，40（12）：1227-1232，1240.

Li Kexin， Zheng Yuan， Hu Xueyuan. Effect of width.to.diameter ratio of impellers on waterwheel performance based on volume of fluid model［J］. Journal of Drainage and Irrigation Machinery Engineering，2022，40（12）：1227-1232，1240.

［12］刘在伦，王东伟，侯祎华，等 .离心泵泵腔和平衡腔液体压力试验与计算［ J］.农业机械学报， 2016，47（8）： 42-47，324.

Liu Zailun， Wang Dongwei， Hou Yihua， et al. Experiment and calculation of fluid pressure in pump chamber and balance cavity of centrifugal pump［J］. Transactions of the Chinese Society for Agricultural Machinery，2016，47（8）：42-47，324.

［13］梁晓瑜，毛君，王鑫 .基于 UDF技术的线性压缩机吸气装置双向流固耦合仿真分析［ J］.机械强度， 2022，44（4）：937-944.

Liang Xiaoyu， Mao Jun， Wang Xin. Two.way fluid.structure interaction simulation analysis of suction device of linear compressor based on UDF technology［J］. Journal of Mechanical Strength，2022，44（4）： 937-944.

［14］Liu Z J，Shi K，Xie Y，et al. Hydraulic performance of self.priming mesh filter for micro.irrigation in northwest China［J］. Agricultural Research，2021，11：58-67.

[1]	李飞翔, 唐凯怿, 葛越锋, 杨大芳, 李得志, 马佳佳. 基于DEM的导种管优化设计方法研究[J]. 中国农机化学报, 2024, 45(2): 41-47.
[2]	郭茜, 高巍, 张西良. 等滑切角锯齿型刀片优化设计与试验[J]. 中国农机化学报, 2024, 45(1): 49-53.
[3]	穆桂脂, 亓协腾, 张万枝, 吕钊钦, 张婷婷, 王姝文. 碎甘薯秧离散元仿真参数测量与标定^*[J]. 中国农机化学报, 2021, 42(11): 72-79.
[4]	段建;陈树人;尹建军;梁馨;. 基于虚拟技术的田园管理车前悬架优化设计[J]. 中国农机化学报, 2020, 41(8): 121-126.
[5]	倪晋尚;. 农用车辆CVT带传动系统优化研究[J]. 中国农机化学报, 2019, 40(9): 146-152.
[6]	尹新权;王珺;杜遥;. 基于响应面法的永磁联轴器优化设计[J]. 中国农机化学报, 2019, 40(5): 117-121.
[7]	刘惠鸣;赵树朋;张桢;张世芳;赵松;胡淑明;. 电动环卫车动力系统优化研究[J]. 中国农机化学报, 2019, 40(5): 122-127.