# Influence of Fractal Disc Filter Flow Channel Parameters on Filtration Performance
## 4 Conclusions  
1. At present, the popularization of micro-irrigation technology in China has broad prospects. The application of disc filters promotes the optimization of micro-irrigation filtration system selection, and backwashing disc filters can greatly improve the efficiency of micro-irrigation systems and save costs. Therefore, continuously strengthening the research and development of disc filters and structural optimization, reducing head loss and energy consumption, integrating intelligent irrigation technology, and building a system that adapts to various irrigation conditions can promote the vigorous development of micro-irrigation technology in China. 2. The application of fractal theory in disc filters has not only achieved remarkable results in improving the performance of disc filters but has also provided ideas for structural optimization of other components in micro-irrigation systems. The fractal disc filter, based on the fractal theory of the internal flow channel design, has a higher and more stable efficiency compared with the DC channel disc filter. It is not easy to block for a short time, which increases the working time of the filter and effectively reduces the local head loss in the filtration process. 3. The simulation result of the head loss of the time-shaped disc filter without buffer slot is 3 m, and the head loss of the filter varies from 2.30 m to 2.5 m after the buffer slot is added. When the buffer slot is located in a 1-1\({}^{\prime}\) section, the filtration performance is better. The larger the inclination angle of the laminated flow passage, the more cross points there are between the upper and lower flow passages, the greater the flow capacity, and the better the filtration performance when the inclination angle of the laminated flow passage is 35\({}^{\circ}\). The smaller the total area of flow passage at the outlet of the filter element, the greater the head loss. The taper has a significant influence on the head loss of the disc filter. The filter performance is better when the base edge of the laminated flow passage section is 0.56 mm and the height is 0.20 mm. The larger the taper value is, the smaller the head loss is, and the filter performance is better when the flow passage taper is 0.0080. Among them, the lamination taper has the greatest influence on the filter performance. 4. Combined with the prediction results of the BP Neural Network model, the optimal values of multiple flow channel parameter performance in the fractal disc filter are as follows: The buffer slot is located at 1-2\({}^{\prime}\) of the cross section; the flow passage  
Figure 17: Prediction diagram of BP Neural Network. inclination is 25\({}^{\circ}\); the length of the bottom side of the inner section is 0.36 mm; the height is 0.24 mm; and the taper is 0.0080. Combined with the third conclusion, it is shown that the results of superior performance of multiple flow passage parameters are not completely consistent with the results of superior performance of single flow passage parameters, but the values of the most influential taper are consistent. Methodology, J.Z. ; Software, X.X. ; Validation, W.L. ; Formal analysis, X.X. ; Investigation, W.L. ; Resources, P.Y. ; Data curation, J.Z. and W.L. ; Writing--original draft, J.Z. ; Writing--review & editing, P.Y. ; Supervision, P.Y. ; Project administration, P.Y. ; Funding acquisition, P.Y. All authors have read and agreed to the published version of the manuscript. This research was funded by Major Science and Technology Project of Yunnan Province, grant number: 202202 AE090034. And the APC was funded by China Agricultural University. Not applicable. The original contributions presented in the study are included in the article, further inquiries can be directed to the corresponding author. Author [PERSON] was employed by the company Zhejiang Toumen Port Investment & Development Co., Ltd.