The solenoid valve is composed of an electromagnetic induction coil and a magnetic core, and is one or more hole oil circuit boards. When the coil is plugged in or out of power, the operation of the magnetic core will also cause the liquid to be disconnected according to the oil circuit board, thereby changing the orientation of the liquid. The solenoid valve is divided into single motor control and double electric control according to the control mode, and is divided into 220V, 110V and 24V according to the switching power supply control mode. The solenoid valves commonly used in our production include two-position three-way, two-position four-way, two-position five-way, three-position five-way, etc. According to the main purpose, solenoid valve is divided into pressure reducing valve, directional valve, flow valve and so on. The accuracy and reliability of the solenoid valve are directly related to the normal operation of the machine.
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The solenoid valve wiring head falls off or falls off, the solenoid valve cannot supply power to the system, and the wire knot can be fixed.
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If the solenoid valve coil is burned out, the solenoid valve wiring can be removed and measured with a multimeter. The main reason is that the coil is wet and cold, resulting in poor insulation and magnetic leakage, resulting in unstable coil current and burning, preventing precipitation from entering the solenoid valve. In addition, the torsion spring is firm, the reaction force is large, the number of turns of the coil is too small, and the adsorption force is not enough, which will also cause the coil to burn. In an emergency, the manual button in the coil can complete the “0” position and enter the “1” position through normal operation, so that the gate valve is opened.
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The solenoid valve of the gas alarm is stuck. The matching gap between the solenoid valve rotary vane pump sleeve and the valve core is not large (less than 0.008mm). When mechanical impurities enter or lubricating grease, the gear oil is too small or the function is reduced, which is very easy to get stuck. The treatment method can use stainless steel wire to pierce the small round hole in the head and make it bounce back. The fundamental solution is to remove the solenoid valve, remove the valve core and valve core sleeve for cleaning, and make the valve core operate easily in the valve sleeve.
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Oil leakage. In China’s high-pressure system, the tightness of the solenoid valve oil circuit board is not strict. Oil leakage from solenoid valves or electric hydraulic pumps is common during the opening and closing of hydraulic machines. It is easy to cause a low oil level alarm in the fuel tank for a long time, and the facility will automatically stop working. At this time, it is necessary to deal with the replacement of new related gaskets.
When the solenoid valve of the switching system fails, an appropriate time should be selected to repair it when the solenoid valve trips. If it is not possible to execute in the transition gap, the switching system can abort and resolve.
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