小易為你介紹一下液壓機減壓閥不穩壓的處理辦法。
1、對先導式減壓閥,因為先導閥和溢流閥通用,所以產生壓力振擺大的原因和排除方法可參照溢流閥的有關部分進行。
2、減壓閥在超過額定流量下使用時,往往會出現主閥振蕩現象,使減壓閥不穩定,此時出油口壓力出現“升壓-降壓-再升壓-再降壓”的循環,所以一定要選用適合型號規格的減壓閥，否則會出現不穩壓的現象。
3、主閥芯與閥體幾何精度差,主閥芯移動遲滯,工作時不靈敏。檢修,使其動作靈活。
4、主閥彈簧太弱,變形或卡住，使閥芯移動困難時可更換彈簧。
5、阻尼小孔堵時,清洗阻尼小孔。
6、油液中混入空氣時排氣。
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.
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