水泵在启动前,首先将水泵及吸水管注满水,否则,不可启动。一般小型水泵多用人工方法充水,为节约时间和劳力,我县抽水站都采用结构简单,造价低廉,使用可靠的水环式(KBH型)真空泵抽真空引水。但是,运行的时间久了,叶轮与泵壳之间磨损,空隙加大,真空泵不能应用,需重 Before starting the pump, water pump and suction pipe filled with water, otherwise, can not start. In general, small pumps are filled with water by artificial methods. In order to save time and labor, our county pumping stations all adopt the simple structure, low cost and reliable water ring (KBH type) vacuum pump to draw water for vacuuming. However, the operation of a long time, between the impeller and the pump shell wear and tear, increased gap, the vacuum pump can not be applied, to be re-