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The Definition of the Pneumatic Actuator

Source:http://www.flowxgroup.com/Update Time:2014-05-14Hits:

Pneumatic actuator consists of air supply device, pneumatic actuators , control components, auxiliary components and so on. The air supply device gets the compressed air equipment and air purification equipment with butterfly valve difference/comparison. Such as the air compressor, air dryer and so on. The actuator is the device which can convert the gas pressure into mechanical energy. Such as cylinder, gas motors and so on. The control components are used control the compressed air pressure, flow direction and system components of work elements of the program. For example, pressure valve of the pneumatic actuator, flow valve, direction valve and so on. The auxiliary components does the supplementary role for this kind of pneumatic actuators, such as filters, oil mist, pipe fittings and so on.

The classification of pneumatic actuator can be divided into control components, pneumatic transmission system, which is mainly used for valve control system, the logic element control system and so on. The valve control system is composed of the whole pneumatic transmission control system and electrical control, electromagnetic valve conversion system.

The advantages and a lot of disadvantages of pneumatic actuator are very important for its using. The advantages consist of the use of air in medium, abundant, convenient sources. After using direct emissions, polluting the environment which doesn’t need to back to the trachea road line not complicated of the actuator. The viscosity, air pipe flow energy loss is small, suitable for gas supply transmitted over a long distance. Safe and reliable which does not need to fire explosion problem, can in the high temperature, radiation, moisture, dust and other work environment. The pneumatic transmission response quickly. The structure of this kind of pneumatic actuator is very easy with not difficult processing, long service life, and not difficult maintenance and so on.

The disadvantages of the actuator consist of the air compressibility, so that the pneumatic system operation stability, load change effect on the working speeds. The air compressibility, so pneumatic actuator system operation stability, load change effect on the working speed. The pneumatic system pressure is low, not easy to do big output power and torque. The pneumatic signal transmission speed slower than the electron and light, not adapt to the complex transmission system.

From the traditional ideas, cylinder and electric actuators were thought two completely different in the field of automation products, with the continuous improvement of the degree of electrification. Pneumatic actuators are slowly immersed in pneumatic field, both in the application are both compete and complement each other. In this section, we will buy from technical performance, and application cost, energy efficiency, applications and market situation and so on several aspects to compare with electric actuator cylinder their strengths.

As it is known to all, compared with the electric actuators, cylinder can work reliably in harsh conditions, and the operation is simple, basic maintenance can be realized. Cylinder at making reciprocating linear motion, especially suitable for most transmission requirements – work piece in industrial automation line handling of the pneumatic actuator. And, just adjust on either side of the one-way throttle valve installed in the cylinder can simply achieve steady speed control, has become the greatest feature of the cylinder driving system and advantage.

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