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.
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