大田滴灌用网式过滤器滤网堵塞成因分析

过滤器是滴灌系统中最核心的设备,其中网式过滤器以其良好的过滤性能保障了滴灌系统的正常运行,在我国新疆等西北地区农业滴灌系统中应用最广泛。但其应用过程中也存在滤网清洗不彻底以及堵塞的问题,为此,在对网式过滤器滤网堵塞成因及机理进行全面论述基础上,分别从水源水质、不同滤网类型、反清洗设计问题以及水肥一体化对滤网的化学影响等方面对滤网堵塞成因进行了详细的分析,并提出相应对策;这为今后深入研究滤网堵塞机理、解决滤网堵塞问题提供一种思路,为进一步研制更适用西北地区的农业滴灌过滤设备提供理论依据。

The Analysis of Clogging Factor for Filter Screen in Field Drip Irrigation System

Filter is the core equipment in drip irrigation system.For the good filtration performance, the screen filter has guaranteed drip irrigation system running well, and it is widely used for agricultural irrigation system in the northwest of China (especially in Xinjiang).However, lots of problems are encountered in the process of application, such as cleaning not well and clogging.Therefore, based on the comprehensive discussion about the clogging factor and its mechanism of strainer of screen filter, the clogging factors are fully analyzed in detail from the aspects of water quality, different filter screen types, back flushing design and the chemical effect of integral control of water and fertilization on strainer, and then corresponding measures are proposed.The result provides a new way for deeply researching the mechanism of strainer clogging and solving the problem of strainer clogging.It also provides theoretical foundation for developing better agricultural drip irrigation equipment in the northwest region.