混凝土的運輸離不開自上料攪拌車，所以自上料攪拌車就顯得非常重要了，自上料攪拌車是由多個部件組成的，比如專用車底盤、換向閥等等，其中換向閥也會偶爾出現故障，那么自上料攪拌車換向閥出現故障怎么辦？

　　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?

　　自上料攪拌車的換向閥不能換向或者換向動作緩慢，一般是因潤滑不良、彈簧被卡住或損壞、油污或雜質卡住滑動部分等原因引起的。此時，我們應先檢查油霧器的工作是否正常，潤滑油的粘度是否合適。必要時，應更換潤滑油，清洗換向閥的滑動部分，或更換彈簧和換向閥。

　　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.

　　自上料攪拌車的換向閥經長時間使用后容易出現閥芯密封圈磨損、閥桿和閥座損傷的現象，導致閥內氣體泄漏，閥的動作緩慢或不正常換向等故障。此時，需要更換密封圈、閥桿和閥座，或將換向閥換新。

　　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.

　　若電磁先導閥的進、排氣孔被油泥或其他雜物堵塞，封閉不嚴，活動鐵芯被卡死，電路有故障等，均可導致換向閥不能正常換向，對于前三種情況應清洗先導閥及活動鐵芯上的油泥和雜質，而電路故障一般又可分為電路故障和電磁線圈故障兩類。在檢查電路故障之前，要先將換向閥的手動旋鈕轉動幾下，看換向閥在額定的氣壓下是否正常換向，若能正常換向，則是電路有故障。

　　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.

　　檢查時，可以用儀表測量電磁線圈的電壓，看是否達到了額定電壓，如果電壓過低，應進一步檢查控制電路中的電源和相關聯的行程開關電路。如果在額定電壓下換向閥不能正常換向，則應檢查電磁圈的接頭是否松動或接觸不實，檢查方法：拔下插頭，測量線圈的阻值（一般應在幾百歐姆至幾千歐姆之間），如果阻值太大或太小，說明電磁線圈已損壞，需要更換。

　　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.

　　自上料攪拌車換向閥出現故障怎么辦？上面就是就給大家介紹一下這些故障的解決方法。這就要求操作人員平日里要做好相關的檢查保養維修工作，不可大意。更多內容的了解就來網站www.www.boy7up.cn咨詢吧。

　　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.www.boy7up.cn.