Pneumatic ball valve commonly used pneumatic device

By the pneumatic device and pneumatic ball valve ball valve and air supply control system, etc. Commonly used pneumatic device has a cylinder piston and rotary vane type two kinds big.

1. Cylinder piston pneumatic ball valve. By cylinder piston for regional motion drive device, the ball valve opening and closing process of rotation Angle is 90 °, so used for ball valve cylinder piston drives must also have a linear motion into rotary motion transformation mechanism. According to the structure form of transformation mechanism, the cylinder piston driving devices can be divided into piston rod, piston, piston rack type spiral groove and the piston fork type, etc.


2. Rotary vane type pneumatic ball valve. This kind of pneumatic device has the advantages of compact structure, small lateral size, the output torque constant, no shock phenomenon. Faults is difficult to ensure the sealing between cylinder each studio, often due to leakage and reduce the transmission efficiency and the economic effect, and friction loss is big.





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