Working Principle Of Pneumatic Actuator

When the compressed air enters the pneumatic actuator from the A nozzle, the gas pushes the double pistons to move linearly towards both ends (cylinder head end). The rack on the piston drives the gear on the rotating shaft to rotate 90 degrees counterclockwise, and the valve is opened. . At this time, the gas at both ends of the pneumatic execution valve is discharged with the B nozzle. On the contrary, when the compressed air enters both ends of the pneumatic actuator from the B nozzle, the gas pushes the double plugs to move linearly toward the middle. The rack on the piston drives the gear on the rotating shaft to rotate 90 degrees clockwise, and the valve is closed. At this time, the gas in the middle of the pneumatic actuator is discharged with the A pipe nozzle. The above is the standard transmission principle. According to user needs, the pneumatic actuator can be installed with the opposite transmission principle to the standard type, that is, the selected axis rotates clockwise to open the valve, and rotates counterclockwise to close the valve. The single-acting (spring return type) pneumatic actuator has nozzle A as the air inlet and nozzle B as the exhaust hole (nozzle B should be installed with a silencer). The air inlet of pipe A is to open the valve, and when the air is cut off, the valve is closed by spring force.