旋转网筒过滤器转速变化规律及影响因素研究  

Variation law of the rotational speed of rotating mesh cylinder filters and its influencing factors

作　　者：周洋 陶洪飞[1] 杨文新 马合木江·艾合买提[1] 李巧[1] 姜有为 李莎 ZHOU Yang;TAO Hongfei;YANG Wenxin;Mahemujiang·AIHEMAITI;LI Qiao;JIANG Youwei;LI Sha(College of Hydraulic and Civil Engineering,Xinjiang Agricultural University,Urumqi 830052,China)

机构地区：[1]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830052

出　　处：《水资源与水工程学报》2020年第6期243-248,共6页Journal of Water Resources and Water Engineering

基　　金：新疆维吾尔自治区创新环境(人才、基地)建设专项-自然科学基金项目(2020D01B33);国家自然科学基金项目(41762018);新疆水利工程重点学科研究项目(SLXK2017-01、SLXK2018-05);“天山青年计划”项目(青年博士科技人才)。

摘　　要：为了探索网筒转动对延缓过滤器堵塞问题的影响以及转速的影响因素,分别在不同流量和含沙量条件下进行室内物理模型试验,分析了转速随过滤时间的变化规律及其影响因素。试验结果表明:浑水条件下转速随流量的增大幅度低于清水条件,含沙量对网筒转速有重要影响;网筒转速随流量的增大而增大,流量增大的初始时刻网筒转速加快,网筒转动持续时间延长;相反,网筒转速随含沙量的增大而减小,含沙量越大,初始时刻网筒转速越低,网筒转速下降越快,网筒停止转动时间提前。分析认为,进水流量和含沙量的共同作用导致了网筒转速的变化。通过对过滤池内泥沙质量对比分析可知,网筒转动有利于延缓堵塞、提高过滤效率。因此,在实际工程中可以考虑利用网筒转动来达到延缓堵塞的目的。In order to explore the influence of the rotation of the mesh cylinder on delaying the clogging of the filter and the factors affecting the rotational speed,indoor physical model tests were carried out under the conditions of different flow rate and sediment content,and the variation of rotational speed with the filtration time and its influencing factors were analyzed. The test results show that the rotational speed of the mesh cylinder increases with the increase of flow rate,but the increase under muddy water condition is much lower than that under clean water condition,and the sand content also has an important effect on the rotational speed of the mesh cylinder. With the increase of the flow rate,the rotational speed of the mesh cylinder increases at the initial moment,and the duration of the rotation of the mesh cylinder is prolonged. On the contrary,the rotational speed of the mesh cylinder gradually decreases with the increase of the sand content. The larger the sand content,the lower the rotational speed of the mesh cylinder at the initial moment,the faster the rotational speed drop of the mesh cylinder,so the termination time of the rotation is brought forward. The analysis suggests that the combined effect of influent flow and sediment content causes changes in rotational speed. According to the comparative analysis of the sediment quality in the filter tank,it can be known that the rotation of the mesh cylinder is conducive to delaying clogging and improving filtration efficiency. Therefore,in practical engineering,the rotation of the mesh cylinder can be taken advantage of in order to delay the clogging.

关 键 词：微灌系统 旋转网筒过滤器 堵塞 含沙量 流量 转速 

分 类 号：TV93[水利工程—水利水电工程] S275.5[农业科学—农业水土工程]