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液压机减压阀不稳压的处理办法
发布者:admin  日期:2019-09-18  点击:94
小易为你介绍一下液压机减压阀不稳压的处理办法。
 1、对先导式减压阀,因为先导阀和溢流阀通用,所以产生压力振摆大的原因和排除方法可参照溢流阀的有关部分进行。
   2、减压阀在超过额定流量下使用时,往往会出现主阀振荡现象,使减压阀不稳定,此时出油口压力出现“升压-降压-再升压-再降压”的循环,所以一定要选用适合型号规格的减压阀,否则会出现不稳压的现象。
   3、主阀芯与阀体几何精度差,主阀芯移动迟滞,工作时不灵敏。检修,使其动作灵活。
   4、主阀弹簧太弱,变形或卡住,使阀芯移动困难时可更换弹簧。
   5、阻尼小孔堵时,清洗阻尼小孔。
   6、油液中混入空气时排气。
英文
Xiaoyi will introduce to you the way to deal with the unsteady pressure of the pressure reducing valve of the hydraulic press.

1. For pilot relief valves, because the pilot valves and relief valves are universal, the causes and elimination methods of pressure oscillation can be referred to the relevant parts of relief valves.

2. When the pressure relief valve is used in excess of the rated flow rate, the oscillation phenomenon of the main valve often occurs, which makes the pressure relief valve unstable. At this time, the outlet pressure appears a cycle of "boost-buck-rebound-rebound-rebound". Therefore, the pressure relief valve suitable for the type and specification must be selected, otherwise the phenomenon of unsteady pressure will occur.

3. The geometric accuracy of the main spool and body is poor, the movement of the main spool is slow and the work is insensitive. Maintenance to make its movements flexible.

4. The spring of the main valve is too weak, deformed or stuck, so that the spring can be replaced when the valve core is difficult to move.

5. Clean the damped orifice when damped orifice is blocked.

6. Exhaust when oil is mixed with air.
文章来源:http://yxpic.com/news.asp?lt=308
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