The solenoid valve is an electromagnetically controlled industrial device. It is an automatic basic component used to control fluids. It is an actuator, and a pneumatic solenoid valve is one of them. It controls the movement of the valve body to block or leak different oil discharges. The hole, while the oil inlet hole is normally open, the hydraulic oil will enter different oil drain pipes, and then the piston of the oil cylinder is pushed by the pressure of the oil of the pneumatic solenoid valve, so that the current of the electromagnet controlling the pneumatic solenoid valve is controlled. The mechanical movement of the entire solenoid valve.
Pneumatic solenoid valve fault summaryPneumatic solenoid valves are one of the many types of solenoid valves used. It is inevitable that people who use them will have such failures for a long time. It is not a product quality problem, but a malfunction caused by improper use. Next, in this article, the imported electromagnetic valve dry ball automation Xiaobian will discuss with you the common troubleshooting of pneumatic solenoid valves, I hope that interested friends may wish to take a look.
1. The pneumatic solenoid valve is not sealed, clear or replace the oil seal first;
2. Exclude the pressure of the cylinder itself, and connect the pressure gauge directly to the oil outlet. If the pressure is normal, it is a problem of the actuator.
3. Oil leakage or oil leakage between the fuel tank and the valve block, the ring is worn or broken, check and replace the 0-ring.
4. Oil leakage or oil leakage between the motor back cover or the motor and the valve block
5. The oil at the high pressure of the valve block is leaked, and the motor is removed. If yes, notify the manufacturer to replace the entire power unit;
6, electrical connection error, check and correct wiring;
7. Start the switch to burn out, cut off the power, and replace the start switch;
8. The AC contactor burns out, the power is checked, and the AC contactor is replaced.
9, the system noise is too large
10. There is air in the system, and it works continuously several times to eliminate air;
11. The coupling is not properly installed or worn, inspected and reinstalled or replaced;
12. Do not work under extreme pressure for a long time, and stop working when the relief valve begins to overflow.
How to check the fault of the pneumatic solenoid valve, first of all we have to figure out the types of pneumatic solenoid valves, there are many kinds, there are two two-way, two three-way, and two five-way and so on. Generally, the power-off of the solenoid valve is a state, and the power transmission is a state, and the continuity between the ports in each state is different.
It is generally recommended to blow with a lower pressure gas source. When you turn off the power, look at which ports are connected. After the power transmission, which ports are connected, it is good or bad.
In addition, when there is no gas source, take a breath and blow it to see how the smoke is going. This work has to let the smokers do it, they are happy to help. If there is a problem, it is necessary to disassemble and repair it. Generally, it is a foreign body jam, or it is worn out, and the seal is damaged. If you don't fix it, you have to change it. You can't make it.
Pneumatic solenoid valves have better performance, lower failure rate than other types of solenoid valves, and a wide range of applications. Therefore, among the many valves of Xiamen dry ball agents, the sales of pneumatic solenoid valves account for a certain proportion. However, due to the physical reasons for the production of materials, the mechanical solenoid valve is also prone to various failure problems in the long-term use. The main maintenance points of pneumatic solenoid valve are as follows:
1. Regularly disassemble and clean the internal pneumatic impurities, and check whether the various parts of the pneumatic solenoid valve are seriously worn, and consider replacing or repairing damaged parts according to actual conditions.
2. When disassembling the pneumatic solenoid valve, first install the power supply and close the connection, and pay attention to the installation sequence of the various components of the solenoid valve during the disassembly process.
3. Pneumatic solenoid valves are prone to faults. There are mainly vulnerable parts such as coils and seals. The coils are burnt due to overloading, and the seals are consumables themselves, mostly due to long-term work. Caused by natural wear and tear.
4. When the pneumatic solenoid valve is working, if the vibration occurs frequently, it will easily cause damage to the pneumatic solenoid valve components. Therefore, the maintenance of the solenoid valve should also ensure the stability of the working environment, and periodically the pneumatic solenoid valve components. Fix it, such as a nut bolt.
5. If the working environment of the pneumatic solenoid valve is open air, it may cause the rust of the pneumatic solenoid valve and parts to make the solenoid valve unable to work normally. Therefore, maintenance is required to ensure stable operation.
6. Under the permissible conditions, if the working position of the pneumatic solenoid valve is important, special maintenance personnel are required to ensure the working stability and low failure rate of the solenoid valve. This will make it more efficient, lower maintenance costs and longer life. The maintenance method of the pneumatic solenoid valve is similar to that of the general valve type. In the actual use and maintenance process, the user can refer to the relevant instructions of the Xiamen dry ball for proper maintenance and maintenance operations. This has a positive effect on the prolonged service life of pneumatic solenoid valves and other valves.
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