Overview of AW28+SD pneumatic actuator
When using AW pneumatic actuator, first determine the torque of the valve and consider the pipeline medium; The safety value of water vapor or non lubricating medium increases by 25%; The safety value of granular powder medium for non lubricating gas is increased by 100%; For cleaning, the safety value of the frictionless lubricating medium is increased by 20%, and then double action or single action torque gauge is found according to the working pressure of the air source, so as to obtain an accurate actuator model.
AW is applicable to 90 series pneumatic device ℃ valve rotation (1/4 rotation). Such as ball valve, butterfly valve, plug valve, etc. This product is designed and manufactured according to JIS standard, and the connection part with the valve adopts ISO5211 standard. AW pneumatic actuator is divided into double action and single action (spring return), two sub cylinders, double pistons, fork drive structure, easy to manufacture large cylinder, large output torque, flexible and stable action; The cylinder inner wall and piston rod are plated with hard chromium, with good wear resistance; All sliding parts are equipped with oil-free lubricated bearings and guide rings to reduce the friction coefficient and extend the service life. The U-shaped curve output torque of AW pneumatic actuator is more suitable for the switching and adjustment of large caliber ball valves and butterfly valves, and can also be used in other 90 ° rotary occasions.
◇ Product characteristics
1. Rotation angle: double acting=90 °, single acting=90 ° Angle adjustment from both ends ± 5 °
2. Working environment temperature: - 20 °~80 ℃.
3. Air source: clean air filtered, dried or lubricated, with zui atmospheric pressure of 0.4MPa and zui atmospheric pressure of 1.0MPa.
4. Basic design: pneumatic double cylinder double piston fork transmission mechanism. Type AW=double acting; Type AWS=single acting (spring return).
5. Accessory function: it can be equipped with single (double) electric control solenoid valve, limit switch recovery, electric positioner, triple air source processing and manual operating mechanism to fully realize automatic or manual control.
◇ Structural characteristics and main components of pneumatic drive device
1. Bearing [metal PTEE] has small friction coefficient and good lubrication and sealing effect.
2. Diaphragm [HT200 (FC200 rotating mechanism is isolated to reduce air consumption, prevent foreign matters from entering the cylinder, guide the piston and ensure stable movement.
3. Air inlet [RC1/4, 3/8, 1/2].
4. The piston [HT200 (FC200) has light pressure resistance, small thrust loss and good sealing performance.
5. The piston rod [45 (S45C+HCr)] has high strength, hard chrome surface and wear resistance.
6. The surface of the pin [45 (S45C+HCr)] is hard chrome, and the output of the piston rod is stably supplied to the shift fork.
7. Manual worm gear operator mounting platform.
8. The shaft [45 (S45C+HCr)] is wear-resistant.
9. Cylinder [QT450-10 (FCD450)].
10. The limit stud adjusts the switch angle, and the switch can be adjusted ± 5 °.
11. O-ring [NBR] waterproof.
12. The shift fork [QT450-10 (FCD450)] converts linear motion into rotary motion, and the output torque characteristics adapt to the torque characteristics of medium and large diameter valves.
13. Box [HT200 (FC200)].
