Solenoid valve, briefly, is a valve system controlled using electric current. It is preferred in control units that stop or release the flow of the product. Since the words valve and valve have close meanings, they are also called solenoid valves. Solenoid valve systems, which combine electronics and mechanics, are widely used in motor vehicles and work machines.
How Does the Solenoid Valve Work?
solenoid valve There are coils suitable for the valve type. A magnetic field is created by applying electric current to the coils, which are formed as a result of winding copper wires on top of each other many times. It would not be wrong to make an analogy with an electric magnet to this situation.
The purpose of making the solenoid coil magnet is to command the iron piece connected to the diaphragm where the on-off is made. The magnetically attracted iron piece pulls the diaphragm, allowing the flow to begin. The diaphragm will close back as the magnet effect will be lost as a result of the interruption of the electric current. Therefore, the flow will be interrupted.
It is possible to ensure that the flow on the solenoid valve is at the desired flow by changing the current values.
What are Solenoid Valve Malfunctions?
A systematic approach is required when detecting solenoid valve malfunctions. Because the failure detection method and repair of the electrical or mechanical parts that make up the system differ. We can facilitate fault detection by listing the causes of malfunctions that may occur in solenoid valves. The possible causes of malfunctions are as follows:
- Failures caused by electricity supply,
- Solenoid coil failure,
- Worn or damaged diaphragm mechanism,
- Dirt and foreign residues formed over time,
- Use of the solenoid valve outside the operating range.
While we explain the working principle of solenoid valves, it will be easy to understand the causes of failure gradually. Since solenoid valves work with electric current, it is necessary to repair faults in the power supply or wiring.
The use of power supply that is not suitable for the current and voltage values of the solenoid valve may cause the solenoid coil to burn. Yellowing on the solenoid coils is a sign of burning. Coil failure should be detected by measuring with a test device.
Failure to open and close despite a properly functioning solenoid coil connected to a suitable power source indicates a diaphragm problem. In some cases, the dirt accumulated over time can prevent the diaphragm from working. Accumulation of foreign materials on the gasket or spring may prevent opening and closing and may cause leakage. Filtering may be required to prevent this.
During the production of solenoid valves, the working intervals are determined. Other than these standards, pressure values, current-voltage values, flow direction connections will cause malfunctions.
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