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提升泵压力自动控制器的修理

Time: 2016/9/7 10:17:46

    当压力达到额定时,提升泵立即变为空转,若压力低于额定压力时,又使提升泵转向蓄能器充液。此外,其上还有一个*阀门,可避免压力超过允许的*值。
    常见故障有:
    (l)两个小活门的漏液;
    (2)截止阀的泄漏;
    (3)控制阀的漏液;
    (4)活塞被卡紧;
    (5)柱塞被卡紧。
    以上任一故障,均能使其控制失灵。*危险的是活塞和柱塞卡紧以及小活门总是处在顶开位置和小活门总是处在关闭位置。这种情况多为顶杆太短,未能与小活门接触之故。所有活门、阀门都不应有漏液现象。特别是小活门更不允许漏液。活塞、柱塞均须灵活自如。两个活门均应保持在交替地一开一关的状态。这可以利用两个调节螺栓进行调整,调整后,先试验其灵敏度,合适后,再锁紧螺母加以紧固,防止松脱。
    如果活塞被卡紧,需将其拆下,检查卡紧的原因。如系缸套有锥度,需消除锥度,如系密封圈太紧,需更换密封圈。
    此外,其中的过滤器,要经常拆洗干净,浸渍粘性稠的机油后再装上。应特别注意,如提升泵压力自动控制器失灵,提升泵需马上停车,检查故障的原因并及时处理。

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