混凝土的运输离不开自上料搅拌车，所以自上料搅拌车就显得非常重要了，自上料搅拌车是由多个部件组成的，比如专用车底盘、换向阀等等，其中换向阀也会偶尔出现故障，那么自上料搅拌车换向阀出现故障怎么办？

　　Concrete transport is inseparable from the feeding mixer, so since the feeding mixer is very important, since the feeding mixer is composed of a number of components, such as special car chassis, reversing valve and so on, the reversing valve will occasionally fail, so what to do when the reversing valve of the feeding mixer fails?

　　自上料搅拌车的换向阀不能换向或者换向动作缓慢，一般是因润滑不良、弹簧被卡住或损坏、油污或杂质卡住滑动部分等原因引起的。此时，我们应先检查油雾器的工作是否正常，润滑油的粘度是否合适。必要时，应更换润滑油，清洗换向阀的滑动部分，或更换弹簧和换向阀。

　　The reversing valve of the feeding mixer can not be reversed or the reversing action is slow, generally due to poor lubrication, spring stuck or damaged, oil or impurities stuck sliding part and other reasons. At this point, we should first check whether the oil mist works normally and whether the viscosity of lubricating oil is appropriate. If necessary, replace the lubricating oil, clean the sliding part of the reversing valve, or replace the spring and reversing valve.

　　自上料搅拌车的换向阀经长时间使用后容易出现阀芯密封圈磨损、阀杆和阀座损伤的现象，导致阀内气体泄漏，阀的动作缓慢或不正常换向等故障。此时，需要更换密封圈、阀杆和阀座，或将换向阀换新。

　　After a long time of use, the reversing valve of the feeding agitator is prone to spool sealing ring wear, stem and seat damage, resulting in gas leakage in the valve, slow valve action or abnormal reversing and other faults. At this point, the sealing ring, stem and seat need to be replaced, or the reversing valve is replaced.

　　若电磁先导阀的进、排气孔被油泥或其他杂物堵塞，封闭不严，活动铁芯被卡死，电路有故障等，均可导致换向阀不能正常换向，对于前三种情况应清洗先导阀及活动铁芯上的油泥和杂质，而电路故障一般又可分为电路故障和电磁线圈故障两类。在检查电路故障之前，要先将换向阀的手动旋钮转动几下，看换向阀在额定的气压下是否正常换向，若能正常换向，则是电路有故障。

　　If electromagnetic pilot valve inlet and vent by sludge or other sundry jam, closed lax, activity core was jammed, a fault circuit, etc., all can lead to directional valve can't normal commutation, wash for the first three of the pilot valve and activity sludge and impurities on the iron core, and circuit fault in general can be divided into two categories, the failure of circuit and electromagnetic coil. Before checking the circuit fault, it is necessary to turn the manual knob of the reversing valve several times to see whether the reversing valve is normal under the rated air pressure. If it can be normal, the circuit is faulty.

　　检查时，可以用仪表测量电磁线圈的电压，看是否达到了额定电压，如果电压过低，应进一步检查控制电路中的电源和相关联的行程开关电路。如果在额定电压下换向阀不能正常换向，则应检查电磁圈的接头是否松动或接触不实，检查方法：拔下插头，测量线圈的阻值（一般应在几百欧姆几千欧姆之间），如果阻值太大或太小，说明电磁线圈已损坏，需要更换。

　　When checking, you can use a meter to measure the voltage of the electromagnetic coil to see if it reaches the rated voltage. If the voltage is too low, you should further check the power supply in the control circuit and the associated travel switch circuit. If the reversing valve can not be normal under the rated voltage, it should check whether the joint of the electromagnetic ring is loose or contact is not real, check method: unplug, measure the resistance of the coil (generally should be between several hundred ohm to several thousand ohm), if the resistance is too large or too small, that the electromagnetic coil has been damaged and needs to be replaced.

　　自上料搅拌车换向阀出现故障怎么办？上面就是就给大家介绍一下这些故障的方法。这就要求操作人员平日里要做好相关的检查保养维修工作，不可大意。更多内容的了解就来网站www.zkzsljbc.com咨询吧。

　　What to do if the reversing valve of the feeding agitator fails? The above is to introduce to you the solution to these failures. This requires operators to do the relevant inspection and maintenance work on weekdays, not careless. For more information, please visit www.zkzsljbc.com.