Method and system for controlling duration of a backwash cycle of a filtration system
    1.
    发明申请
    Method and system for controlling duration of a backwash cycle of a filtration system 审中-公开
    控制过滤系统回洗循环持续时间的方法和系统

    公开(公告)号:US20070138092A1

    公开(公告)日:2007-06-21

    申请号:US11313166

    申请日:2005-12-20

    IPC分类号: B01D65/02

    摘要: A method of controlling duration of a backwash cycle of a filtration system commences with initiating pumping of a backwash fluid (12) through a filter (6) of the filtration system by way of a backwash pump (17). The flow rate of backwash fluid (12) is maintained to within 20% of a predetermined flow rate. A pressure sensor (23) takes a pressure measurement indicative of a pressure differential between upstream and downstream sides of the filter (6). Changes in the pressure measurement over time are monitored. A backwash duration controller (18) stops the backwash pump (17) when a rate of change of the pressure measurement reaches a predetermined minimum value.

    摘要翻译: 一种控制过滤系统反冲洗循环持续时间的方法是从反洗液泵(17)开始通过过滤系统的过滤器(6)泵送回洗流体(12)开始的。 反洗液(12)的流量保持在预定流量的20%以内。 压力传感器(23)进行表示过滤器(6)的上游侧和下游侧之间的压力差的压力测量。 监测压力测量随时间的变化。 当压力测量的变化率达到预定的最小值时,回洗持续时间控制器(18)停止回洗泵(17)。