自吸网式过滤器过滤时间与自清洗时间变化规律分析

Filtering Time and Sewage Time for Automatic Suction Screen Filter

摘要:

微灌用过滤器是保证整个微灌系统正常运行的核心过滤设备，开发具有自清洗功能的过滤设备则是研究的重点。在对自吸网式过滤器进行水力性能试验的基础上，分析了自吸网式过滤器过滤时间的变化规律，表明过滤时间的变化并非呈线性规律；分析了自清洗时间的影响因素，指出自清洗时间并不是恒定不变的，而是在其他参数固定时与进水含沙量S0呈反比关系。

关键词:微灌;过滤器;过滤时间;自清洗时间

Abstract:

The filter in micro-irrigation is the key to guarantee normal running of the whole micro-irrigation system. It is the key to develop automatic filter. Based on the research of hydraulic performance of drain system for automatic suction screen filter, the discipline of filtering time for automatic suction screen filter was analyzed. It showed that the change of filtering time was not linear. The factors affecting sewage time were analyzed. The results showed that the cleaning-time was not the constant value, but had the inverse relation with inflow sediment concentration S0 when other parameters were constant.

Key words:微灌;过滤器;过滤时间;自清洗时间