All kinds of pneumatic actuators

Pneumatic drive fast, reliable work, convenient control, therefore, widely used widely all kinds of remote control and automatic control valves. Below to introduce various types of pneumatic device.

1. The piston connecting rod type pneumatic device. Is still in use. Ball valve with pneumatic piston connecting rod type device, common are oscillating cylinder type and fixed cylinder type two kinds of structure forms.


2. Rotary vane type pneumatic device. According to the working principle of this device is used for ball valve is ideal, because, to rotate the valve stem of the power source, directly promote the blade, make ask rod rotation, no movement form conversion link, save energy. The main advantage of this drive is simple and compact structure, beautiful appearance. Reducing the transmission efficiency and economic effect. Especially in expensive nitrogen gas as working medium, the leakage should be avoided.


3. The piston fork type pneumatic device. Due to mechanical and drive torque characteristics of the torque characteristic is suitable for ball valves, so widely used in automatic control system in various pneumatic ball valve. It became a piston fork type pneumatic device. Dial and piston type pneumatic device according to the arrangement and layout of cylinder, a cylinder, double cylinder and four cylinder three kinds of structure forms.


4. The piston rack type pneumatic device. Piston rack type driving device is a kind of old pneumatic device, it can be applied to various working medium of the valve. The driving device is still in very common, because it has the following advantages: 1) Appearance is smaller, and can get a lot of output torque; 2) Simple structure, and has good processing technology.








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