Industry News

How does a pneumatic actuator work?

2022-02-15

 


When the compressed air enters the pneumatic actuator from the A nozzle, the gas pushes the double piston to move linearly to both ends (the 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 actuator valve is discharged with the B nozzle.


On the contrary, when the compressed air enters the two ends of the pneumatic actuator from the B nozzle, the gas pushes the double plug to move straight to 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 nozzle.

From a large aspect, it is divided into two internal structures: gear type and fork type. The gear type means that the components that carry out the transmission force are gears, and the fork type means that the components that carry out the transmission force are the fork parts. Don’t underestimate such a little bit. Small division, this is the key upgrade part! With this little change, the actuator can be changed from the original straight stroke to an angular stroke that is more matched with the ball valve butterfly valve, the volume can be reduced to 2/3 of the original, and the gas consumption can be saved by about 30%.




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