I. Model and Parameters of Pneumatic Solenoid Valve
Pneumatic solenoid valves are valves that control the flow direction of gas by using electromagnetic force and are widely used in the field of industrial automation. Different models of pneumatic solenoid valves have different parameters and applications, so choosing the appropriate model is of vital importance.
The common types of pneumatic solenoid valves mainly include: direct-acting, pilot-operated, and backflush types, etc. These models each have their own characteristics. For instance, the direct-acting type features a simple structure and a fast response speed, the pilot-operated type can provide a greater flow rate, and the recoil type can effectively prevent clogging.
When choosing pneumatic solenoid valves, the main parameters to be considered include: working pressure range, working medium temperature range, power supply voltage and power consumption, interface size, and applicable medium etc. For instance, the working pressure range is typically between 0 and 1.6MPa, and the working medium temperature range can fluctuate from -20℃ to +80℃.
In addition, different models of pneumatic solenoid valves also have different diameters and connection methods. Therefore, when making a selection, the flow rate of the fluid and the connection method of the system also need to be considered. According to actual needs, suitable models and parameters can be selected to ensure that the pneumatic solenoid valve can meet the working requirements of the system.
Table 1: Examples of Common Pneumatic Solenoid Valve Models and Parameters
| models | Working pressure range (MPa) | working medium temperature range (℃) | power supply voltage (V) | interface size |
| XYZ-A | 0-1.6 | -20 --- +80 | 24 | DN15 |
| XYZ-B | 0-1.0 |
-10 --- +60 |
12/24 | DN20 |
Ii. How to set the pressure value to control the opening and closing of the pneumatic solenoid valve
The opening and closing of pneumatic solenoid valves is usually controlled by a pressure controller, which triggers the opening or closing of the solenoid valve by setting a specific pressure value. In industrial automation applications, this enables us to precisely control the gas flow direction of the system, thereby achieving more efficient and accurate process control.
Setting the pressure value is generally achieved through a pressure controller or a PLC (Programmable Logic Controller). Specifically, two key parameters need to be set: the opening pressure and the closing pressure.
1. Opening pressure: When the system pressure drops below the set value, the pressure controller will send a signal to open the solenoid valve. The setting of this value needs to take into account the normal operation requirements of the system and the accuracy of process control.
2. Closing pressure: When the system pressure reaches or exceeds the set value, the pressure controller will send a signal to close the solenoid valve. The setting of this value needs to be determined based on the security requirements and operational efficiency of the system.
For instance, if we set the opening pressure at 0.4MPa and the closing pressure at 0.6MPa, then when the system pressure drops to 0.4MPa, the pressure controller will trigger the solenoid valve to open. When the system pressure rises to 0.6MPa, the pressure controller will trigger the solenoid valve to close.
In practical applications, to ensure the stable operation and safety of the system, we need to set an appropriate pressure value based on the actual situation and in reference to the equipment's operation manual. If the Settings are incorrect, it may lead to system failure or performance degradation.
In general, the model selection of pneumatic solenoid valves should be determined based on the actual application scenarios and requirements, while the setting of pressure values depends on the operational requirements of the system and the accuracy of process control. In actual operation, we need to flexibly select and adjust based on the actual situation to ensure the stable operation and optimized performance of the system.
