Pneumatic valve actuator manufacturers explain the principle of pneumatic butterfly valve
Pneumatic butterfly valve is mainly used in food, chemical, electric power oil and other industries. Pneumatic butterfly valve through the stem control internal circular butterfly plate, so as to start and regulate the flow of media. At present, the pneumatic butterfly valve is mainly used in stainless steel pneumatic butterfly valve, carbon steel pneumatic butterfly valve, etc. The following Gongteng automatic control to introduce the internal principle of pneumatic butterfly valve.
Pneumatic butterfly valve principle
Pneumatic butterfly valve can control the air flow pressure, flow and direction of the pneumatic system, to ensure that the internal starting elements and the system can work normally. Pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve, support, cylinder, valve body, valve stem, etc. The actuator of pneumatic butterfly valve adopts single action and double action working principle respectively. The single action working principle is through the air closing spring reset, which is suitable for open or closed. The working principle of double action is gas switch action, suitable for regulating type.
Pneumatic butterfly valve is a component of pneumatic system. It has a spherical shape and is powered by compressed air. The actuated pneumatic actuator is executed by reversing the solenoid valve, and then the pneumatic actuator drives the valve switch.
The internal structure of the pneumatic butterfly valve is relatively simple, and when the operator rotates it 90 degrees, it can be quickly started and closed. Pneumatic valve has good fluid control characteristics. When the inside of the butterfly valve is fully opened, as long as the pressure of the valve is reduced, the thickness of the iron plate will produce some resistance to the flow of the inner ring. The muffler is installed in the solenoid valve exhaust port of the pneumatic butterfly valve to reduce noise.
Valve positioner is the main accessory of pneumatic valve. The main function of the valve positioner is to scale up and adjust control. Valve positioner and pneumatic butterfly valve form a complete structure. One is used as the gas capacity element and the other is used as the lag element to complete the start regulation control.
Pneumatic butterfly valve small size, light weight, easy to remove and maintenance, can be installed in any position; Flow trend line, good adjustment performance; The internal seal can be replaced to realize two-way seal. Pneumatic butterfly valve drive mode is also many, can choose manual, electric or pneumatic.
Gongteng automatic control reminds you that the pneumatic valve should be installed and debugging after installation. The staff must manually operate the solenoid valve, and then observe the opening and closing state of the pneumatic butterfly valve. If the valve is in difficulty, the cylinder stroke should be reduced until the valve starts and closes smoothly without leakage.
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