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  • 如何进行轴流泵的拆卸?
  • 本站编辑:杭州新龙发布日期:2022-05-11 09:53 浏览次数:
轴流泵的结构比离心泵简单,由于零部件较重,安装精度要求高,所以,拆卸工作比离心泵费力,在拆卸时必须注意安全。轴流泵的部件拆卸可分两部分进行。
上机座的拆卸,先拆去弹性联轴器的螺丝,松开电动机与机座连接的螺丝,取下电动机。
用木块撑住刚性联轴器,以防泵轴往下落,再拆去传动轴的拼帽螺母,轴承压盖和刚性联轴器的连接螺丝,把传动轴向上提到一定高度,随后拆下刚性联轴器的拼帽螺丝,取下弹性联轴器,即可将传动轴抽出上机座。
再把弹性联轴器拆下,将滚动轴承从传动轴上用专用工具取下来,至此,上机座全部拆下完毕。
下部泵体部分拆卸,先拆下进水喇叭,然后用专用工具把泵轴下端叶轮螺母拧开,便可把整个叶轮拆下来。对装有动叶圈的水泵,在拆下进水喇叭以后,将动叶圈拆开再拆叶轮。
叶轮拆下后,可以把泵轴向上抽出,然后拆卸导叶体,其方法是把导叶座与上部泵体弯管的连接螺丝一一松开,导叶座即可取下。再用套筒扳手把橡胶轴承与导叶座连接螺丝拆去,就可把橡胶轴承取下来。再拆弯管上的填料函压盖,钩出填料。继续拆掉上橡胶轴承的固定螺丝,取出上橡胶轴承。泵体弯管固定在水泵梁上,一般不拆。
The structure of axial flow pump is simpler than that of centrifugal pump. Due to the heavy parts and high requirements for installation accuracy, the disassembly work is more laborious than that of centrifugal pump. Attention must be paid to safety during disassembly. The component disassembly of axial flow pump can be divided into two parts.
For the disassembly of the upper base, first remove the screws of the elastic coupling, loosen the screws connecting the motor and the base, and remove the motor.
Support the rigid coupling with a wooden block to prevent the pump shaft from falling down, then remove the cap nut of the transmission shaft, the connecting screw between the bearing gland and the rigid coupling, raise the transmission axis to a certain height, then remove the cap screw of the rigid coupling, remove the elastic coupling, and then pull the transmission shaft out of the upper base.
Then remove the elastic coupling and remove the rolling bearing from the transmission shaft with special tools. So far, the upper base has been completely removed.
For the disassembly of the lower pump body, first remove the water inlet horn, and then unscrew the impeller nut at the lower end of the pump shaft with a special tool to remove the whole impeller. For the water pump equipped with moving blade ring, after removing the water inlet horn, disassemble the moving blade ring and then remove the impeller.
After the impeller is removed, the pump can be pulled out axially, and then the guide vane body can be removed. The method is to loosen the connecting screws between the guide vane seat and the elbow of the upper pump body one by one, and the guide vane seat can be removed. Then remove the connecting screws between the rubber bearing and the guide vane seat with a socket wrench to remove the rubber bearing. Then remove the stuffing box gland on the elbow and hook out the packing. Continue to remove the fixing screws of the upper rubber bearing and take out the upper rubber bearing. The elbow of the pump body is fixed on the water pump beam and generally not disassembled.
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