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由于2.3PNL型立式泵吸入口垂直向下、排出口垂直向上等特点,被广泛用于厂矿的排污。但在使用过程中,常因检修电机时接线等错误,出现泵轴反转造成叶轮退出卡死故障。传统的检修方法是先将出水(浆)管拆开,把泵吊出污水坑后,再分别将吸入管、出水(浆)管、泵体等拆卸,把叶轮恢复原定位装好,最后进行组装和重新安装。这样,检修时间一般长达十几个小时才能排除故障。在一次检修中,因污水深达0.6m左右,我们试用如下办法,即把电机风扇罩及风扇叶拆下,用管钳扳
As 2.3PNL vertical pump vertical suction inlet, the outlet vertical upward, etc., are widely used in factories and mines of sewage. However, during use, often due to overhauling the motor wiring and other errors, the pump shaft reversal caused impeller exit stuck dead. The traditional method of maintenance is to dismantle the water (slurry) pipe first, and then lift the pump out of the sump, then disassemble the suction pipe, the water (slurry) pipe and the pump body, respectively, and restore the impeller to the original position for final installation Assemble and reinstall. In this way, maintenance time is generally up to more than a dozen hours to troubleshoot. In an overhaul, due to the sewage depth of about 0.6m, we try the following method, that is, the motor fan cover and fan blades removed, with pipe clamp pull