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How to solve the problem that the solenoid valve in the four-column hydraulic press cannot be reversed or reset

The solenoid valve is used to control the important parts of each part of the four-column hydraulic press, but sometimes the solenoid valve in the four-column hydraulic press can not be reversed or reset. How should it be solved?


Any component in the four-column hydraulic press has wear or abnormal work, this is inevitable, today we can not reverse or reset the solenoid valve in the four-column hydraulic press how to do? The problem is analyzed and solved. The treatment of the failure of the electromagnet energized spool of the four-column hydraulic press is as follows:




First, the power supply voltage of the electromagnet does not meet the requirements of use. If the power supply voltage is too low, the electromagnet thrust is insufficient to push the spool to reverse.




Second, the valve core card, if the performance indicators of the electromagnet reversing valve meet the requirements, and when the above failure occurs in use, the main check whether the use conditions exceed the specified indicators, such as working pressure, through the flow rate, oil temperature and oil filtration accuracy. Check again whether the reset spring is broken or stuck. For plate-connected solenoid directional valves, check the flatness of the mounting floor surface and whether the mounting screws are tightened too tightly to cause deformation of the four-column hydraulic solenoid body. In addition, the burrs, flanges, and extrusion into the radial balance groove during the grinding process of the valve core are not cleared, and the oil is rushed out during long-term work, and the valve core will also squeeze into the radial gap. At this time should be opened and carefully cleaned.




Third, the axis of the electromagnetic reversing valve in the four-column hydraulic press must be installed in the horizontal direction, such as vertical installation, affected by the gravity of the valve core, armature and other parts, which will cause abnormal reversing or reset.




The above is the four-column hydraulic press solenoid valve can not reverse or reset the solution!

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