Solenoid valve is to use electromagnetic control of industrial equipment, is used to control the fluid automation components, belonging to the actuator, is not limited to hydraulic, pneumatic. In the industrial control system, is used to adjust the direction of the medium, flow, speed and other parameters. Solenoid valve can cooperate with different circuit to achieve the desired control, the control precision and flexibility to be able to guarantee. Solenoid valve, electromagnetic valve, there are many kinds of different work in different position of the control system, commonly used is a one-way valve, safety Industrial Valves, direction control valves, speed regulator, etc. Solenoid valve in use process will appear the following fault condition. To discuss with you. Solenoid valve failure cause analysis: 1, air leakage. Leakage will cause the air pressure is insufficient, make it easier for mandatory valve opening and closing, the reason is that sealing gasket damage or slide valve wear several cavity caused by gas. 2, the electromagnetic valve terminal loose or falls off thrum, electromagnetic valve shall not electricity, can tighten thread ends. 3, electromagnetic valve coil burn out, can remove the solenoid valve connection, measured with a multimeter, if open circuit, the electromagnetic valve coil burn out. Coil be affected with damp be affected with damp, reasons caused bad insulation and magnetic flux leakage, causing excessive current in coil and burned down, so to prevent rain water from entering the solenoid valve. In addition, the spring quality, reaction force is too large, the coil number of turns is too little, not enough suction also coil may be destroyed. When emergency treatment, but the manual button on the coil by the normal work of '0' to '1' bits, makes the valve to open. 4, the electromagnetic valve stuck reasons: electromagnetic valve slide valve and valve core set of fit clearance is small ( Less than zero. 008mm） , are generally single assembly, when mechanical impurities into or lubricating oil is too little, it is easy to get stuck. Treatment methods available wire holes stab, from the head to make it back. The fundamental solution is to solenoid valve will be removed, remove the valve core and valve core, clean with CCI4, makes the valve core within the valve sleeve flexible motion. Removal should be paid attention to when all parts, assembly sequence and wiring position to reassemble and wiring is correct, also check oil mist detector injection hole blockage, lubricating oil is enough.
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