Non-stop suction and backwash dual-purpose pipeline system

The invention relates to a non-stop suction and backwash dual-purpose pipeline system, which mainly comprises a dual-purpose pump, nodes, valves, a membrane unit and a clear water box. According to the present invention, the communication or the blocking of the pipeline is controlled by opening or closing the valves between the nodes, such that the suction from the membrane unit to the clear waterbox or the backwash from the clear water box to the membrane unit is achieved in the case of the non-stop work of the pump; and the two functions of suction and backwash are achieves by using the onepump, and the frequent opening-closing of the pump is avoided, such that the service life of the pump is prolonged. 本发明涉及种不停机抽吸和反洗两用管路系统，主要包括两用泵、节点、阀门、膜单元和清水箱。通过节点之间阀门的启闭，控制管路的连通或阻断，从而实现了泵在不停机的情况下，从膜单元到清水箱的抽吸或从清水箱到膜单元的反洗。本发明用个泵实现了抽吸和反洗两个功能，而且避免了泵的频繁启停，延长了泵的使用寿命。