Abstract：Through the experiment of discharge time of horizontal type self-cleaning screen filter, the relationships between sediment content at outlet and discharge time were obtained, with six different sediment content of inlet, which are S=0.006,0.013,0.015,0.018,0.027,0.063 kg/m3, and four different flow rates, which are Q=220,200,180, 160 m3/h. The changes of sediment content at outlet with discharge time are analyzed respectively such as different sediment content at same flow rate, and same sediment content at different flow rate. The results show that the sediment content at outlet rise to the maximum first,then decrease until reaching a steady value. Therefore, the minimum of discharge time is 14 s. According to the law of conservation of mass, the calculation me-thod of discharge time is also established. Based on the experimental results, the discharge time of filter is calculated, and the value of calculted discharge time is 15-47 s. Combined experimental results of discharge time, the value of discharge time for horizontal type self-cleaning screen filter is determined, which is 15-30 s. The results are consistent with the existing filter test results and actual operating results, which can be used to predict discharge time for practical engineering horizontal self-cleaning screen filter.
李强强, 宗全利, 刘贞姬, 蓝军. 卧式自清洗网式过滤器排污时间试验及计算[J]. 排灌机械工程学报, 2014, 32(12): 1098-1104.
Li Qiangqiang, Zong Quanli, Liu Zhenji, Lan Jun. Experiment and calculation of discharge time for horizontal type self-cleaning screen filter. Journal of Drainage and Irrigation Machinery Engin, 2014, 32(12): 1098-1104.
[1]李世英. 对我国节水灌溉技术发展的几点思考[J]. 排灌机械,2000,18(1): 6-8. Li Shiying. Reflections on the development of China′s water-saving irrigation technology [J]. Drainage and Irrigation Machinery, 2000,18(1): 6-8.(in Chinese)[2]Capra A, Scicolone B.Emitter and filter tests for waste-water reuse by drip irrigation [J]. Agricultural Water Management, 2004,68(2):135-149.[3]Siriwardene N R, Deletic A, Fletcher T D. Clogging of stormwater gravel infiltration systems and filters: Insights from a laboratory study[J]. Water Research, 2007,41(7):1433-1440.[4]张兵,袁寿其,成立.节水灌溉自动化技术的发展及趋[J].排灌机械,2003,21(2):37-41. Zhang Bin,Yuan Shouqi,Cheng Li.Present situation and prospect of automatic control technology in water saving irrigation at home and abroad[J].Drainage and Irrigation Machinery,2003,21(2):37-41.(in Chinese)[5]董文楚. 微灌用砂过滤器水力性能研究[J]. 喷灌技术, 1996(2):7-14. Dong Wenchu. Study on hydraulic performance of sand filter for microirrigation [J]. Sprinkler Irrigation Technology, 1996(2):7-14.(in Chinese)[6]徐茂云. 微灌用筛网式过滤器水力性能的试验研究[J]. 水利学报,1992,23(3):54-56. Xu Maoyun. Experiment study on hydraulic performance of screen filter in micro irrigation [J]. Journal of Hydraulic Engineering, 1992,23(3):54-56.(in Chinese)[7]肖新棉,董文楚,潘林,等.叠片式砂过滤器水力特性模拟计算[J].农业工程学报,2008,24(8):1-5. Xiao Xinmian, Dong Wenchu, Pan Lin, et al. Computational simulation of hydraulic characteristics for laminated sand filter [J].Transactions of the CSAE,2008, 24(8):1-5.(in Chinese)[8]孙新忠.离心筛网一体式微灌式过滤器的试验研究[J].排灌机械,2006,24(3):20-23. Sun Xinzhong. Experiments on integral centrifugal screen panel and micro-irrigation filter [J]. Drainage and Irrigation Machinery, 2006, 24(3):20-23.(in Chinese)[9]刘焕芳,刘飞,谷趁趁, 等. 自清洗网式过滤器水力性能试验[J]. 排灌机械工程学报,2012,30(2): 203-208. Liu Huanfang, Liu Fei, Gu Chenchen, et al. Experiment on hydraulic performance of self-cleaning screen filter [J].Journal of Drainage and Irrigation Machinery Engineering, 2012, 30(2): 203-208.(in Chinese)[10]宗全利,刘飞,刘焕芳,等. 滴灌用自清洗网式过滤器排污压差计算方法[J].农业机械学报,2012,43(1):107-112. Zong Quanli, Liu Fei, Liu Huanfang, et al. Calculating and experiment on drainage pressure difference of self-cleaning screen filter for drip irrigation[J]. Transactions of the Chinese Society for Agricultural Machinery, 2012,43(1):107-112.(in Chinese)[11]宗全利,刘飞,刘焕芳,等. 大田滴灌自清洗网式过滤器水头损失试验[J], 农业工程学报, 2012,28(16):86-92. Zong Quanli, Liu Fei, Liu Huanfang, et al. Experiments on water head loss of self-cleaning screen filter for drip irrigation in field[J].Transactions of the CSAE, 2012,28(16):86-92.(in Chinese)[12]王新坤,高世凯,夏立平,等. 微灌用网式过滤器数值模拟与结构优化[J].排灌机械工程学报,2013,31(8):719-723. Wang Xinkun, Gao Shikai, Xia Liping, et al. Numerical simulation and structural optimization of screen filter in micro-irrigation [J]. Journal of Drainage and Irrigation Machinery Engineering,2013,31(8):719-723.(in Chinese)[13]Yurdem H, Demir V, Degirmencioglu A. Development of a mathematical model to predict clean water head losses in hydrocyclone filters in drip irrigation systems using dimensional analysis[J]. Biosystems Engineering, 2010, 105(4): 495-506.[14]Duran-Ros M, Arbat G, Barragán J, et al. Assessment of head loss equations developed with dimensional analysis for micro irrigation filters using effluents[J]. Biosystems Engineering, 2010, 106(4): 521-526.[15]Puig-Bargués J, Barragán J, Ramírez de Cartagena F. Development of equations for calculating the head loss in effluent filtration in microirrigation systems using dimensional analysis [J]. Biosystems Engineering, 2005, 92(3): 383-390.[16]骆秀萍,刘焕芳,宗全利,等.自清洗网式过滤器排污流量的计算[J].排灌机械工程学报,2012,30(5): 588-591,608. Luo Xiuping, Liu Huanfang, Zong Quanli, et al. Calculating drainage flow rate through self-cleaning screen filters [J]. Journal of Drainage and Irrigation Machinery Engineering, 2012, 30(5): 588-591,608.(in Chinese)[17]刘焕芳,郑铁刚,刘飞,等. 自吸网式过滤器过滤时间与自清洗时间变化规律分析[J].农业机械学报,2010,41(7): 80-83. Liu Huangfang, Zheng Tiegang, Liu Fei, et al. Analysis of filtering time and sewage time for automatic suction screen filter [J]. Transactions of the Chinese Society for Agricultural Machinery, 2010, 41(7):80-83.(in Chinese)[18]刘飞,刘焕芳,宗全利,等. 自清洗网式过滤器水头损失和排污时间研究[J]. 农业机械学报,2013,44(5):127-134. Liu Fei, Liu Huangfang, Zong Quanli, et al. Experiment on head loss and discharge time of self-cleaning screen filter [J]. Transactions of the Chinese Society for Agricultural Machinery, 2013,44(5):127-134.(in Chinese)[19]于忠臣,王松,吴国忠,等. 压力过滤器理论反冲洗时间的确定[J].哈尔滨工业大学学报, 2006,38(8): 1267-1269. Yu Zhongchen, Wang Song, Wu Guozhong, et al. Determination of theoretical backwashing time in pressure filter[J].Journal of Harbin Institute of Technology, 2006,38(8): 1267-1269.(in Chinese)
