Abstract
The working medium of the pneumatic control system is air, which is delivered to each branch pipe through the role of the governing valve , and then the divided gas delivers the compressed air to each solenoid valve and pneumatic control valve. The solenoid valves and pneumatic control valve is connected through terminals and PLC, PLC obtains corresponding signal and makes judgment, conveying signal which is delivered to the solenoid valves and pneumatic control valve to achieve ventilation and breathe action, and finally the gas reaches the cylinder . The cylinder can complete the valve body on and off, so as to realize the pneumatic system of the automatic control.
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