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挖掘机溢流阀出现噪音的原因

日期:2018-05-24   来源:/
溢流阀安装在挖掘机主控制阀的上下两端,上下各一个。该阀设定整个液压系统工作时的最高压力,有时它可能会出现噪音,接下来加长臂挖掘机就来分析挖掘机溢流阀出现噪音的原因:
The relief valve is installed on the upper and lower ends of the main control valve of the excavator. The valve sets the highest pressure of the whole hydraulic system, sometimes it may noise, and then the long arm excavator is added to analyze the cause of the noise of the excavator overflow valve.
1、油液中混入空气,在先导阀前腔内形成气穴现象而引发高频噪声。此时,要及时排尽空气并防止外界空气重新进入。
1, the oil is mixed with air, forming cavitation in the front of the pilot valve, causing high frequency noise. At this point, we must exhaust the air in time and prevent the outside air from re entering.
2、挖掘机配件先导阀因弹簧疲劳变形造成其调压功能不稳定,使得压力波动大而引发噪声,需要更换弹簧。
2. Because of the fatigue deion of the excavator fittings, the pressure regulating function of the pilot valve is unstable, causing the pressure fluctuation to cause noise and the need to replace the spring.
3、针阀在使用过程中因频繁开启而过度磨损,使针阀锥面与阀座不能密合,造成先导流量不稳定、产生压力波动而引发噪声,需要及时修理或更换。
3, the needle valve in the use of frequent opening and excessive wear and tear, so that the needle valve cone and the seat can not close close, causing lead flow instability, resulting in pressure fluctuations and cause noise, need to repair or replace in time.
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