Main characteristics of solenoid valves
Main characteristics of solenoid valves
1. External leakage blocking, easy to control internal leakage, and safe to use. Internal and external leakage is a factor that endangers safety. Other automatic control valves usually extend the valve stem and are controlled by electric, pneumatic, or hydraulic actuators to rotate or move the valve core. This must solve the problem of external leakage caused by long-term action of the valve stem dynamic seal; Only the electromagnetic valve is completed by applying electromagnetic force to the iron core sealed in the magnetic isolation sleeve, and there is no dynamic seal, so external leakage is easily blocked. The torque control of electric valves is not easy, and the valve actuator is prone to internal leakage, even pulling off the valve stem head; The structure of the solenoid valve is easy to control internal leakage until it drops to zero. Therefore, electromagnetic valves are particularly safe to use, especially suitable for corrosive, toxic, or high and low temperature media.
2. The system is simple, easy to connect to a computer, and the price is affordable. The electromagnetic valve itself has a simple structure and low price, making it easier to install and maintain compared to other types of actuators such as control valves. What is more significant is that the automatic control system composed is much simpler and the price is much lower. Due to the switch signal control of the solenoid valve, it is very convenient to connect with the industrial control computer. In today's era of widespread use of computers and significant price drops, the advantage of solenoid valves is even more evident.
3. Express action, small power, and lightweight appearance. The response time of solenoid valves can be as short as a few milliseconds, and even pilot operated solenoid valves can be controlled within tens of milliseconds. Due to its own circuit, it has a more sensitive response than other automatic control valves. Properly designed solenoid valve coils have low power consumption and are energy-saving products; It can also achieve automatic valve position maintenance by simply triggering the action, and does not consume any electricity in normal times. The electromagnetic valve has a small overall size, which not only saves space but also is lightweight and beautiful.
4. The adjustment accuracy is limited and the applicable medium is limited. Electromagnetic valves usually only have two states of switch, and the anti frost level gauge valve core can only be in two limit positions and cannot be continuously adjusted, so the adjustment accuracy is also limited to a certain extent. Electromagnetic valves have high requirements for medium cleanliness, and media containing particles cannot be used. If impurities are present, they must be filtered out first. In addition, viscous media cannot be applied, and the viscosity range of specific products is relatively narrow.
5. Various models and wide applications. Although solenoid valves have inherent shortcomings, their advantages are still very prominent, so they are designed into a variety of products to meet various needs and have a wide range of applications.
