The pneumatic actuators development direction: higher security and reliability. In recent years from the pneumatic technology international standard, it is known that the standard not only proposed the interchangeability requirements, and emphasize the safety. Tube fittings, gas processing hull, the pressure of the pressure test to raise the pressure to use 4 ~ 5 times, time to increase pressure five to 15 min, even in high and low temperature for the test. If implement the international standards, domestic cylinder, cover, gas processing casting and pipe connector is difficult to reach the standard. In addition to pressure test place, the structure also made a certain provisions, such as air processing transparent shell to add external regulations metal cover. Pneumatic components technology application is the expansion of the industrial development of pneumatic symbol: the application of pneumatic components is mainly for the two aspects: maintenance and supporting. The past domestic pneumatic components sales to used for maintenance, in recent years, mainly match directly for the share of the sales of increases year by year. Domestic pneumatic components, the application of tens of millions of dollars from the value of the metallurgical equipment to only 1 ~ 200 yuan chair. Railway locomotive bifurcation, turn the wheel/rail lubrication, train braking, street cleaning, special shop in hoisting equipment, the military chief, etc are put to use specially developed for domestic pneumatic components. This shows that pneumatic technology has "penetration" people from all walks of life, and is expanding increasingly. Pneumatic components to develop intelligent. With the switch has commonly used in cylinder, switch volume will be more small, higher performance, can embed cylinder block; Some still take double color display can indicate the position error, make the system more reliable. Instead of flowmeter with sensors, the pressure gauge, can automatically control the flow of compressed air, pressure, energy saving and ensure the device can be normal operation. Pneumatic servo positioning system existing products to enter the market. The system USES three pneumatic servo valve five links, will be scheduled targeted and position sensor detection data comparison, the implementation of the negative feedback control. Cylinder maximum speed up to 2 m/s, travel 300 mm, the system positioning accuracy + /-0.1 mm. Japan successfully trial-produced a new type of intelligent electromagnetic valve, the valve is equipped with a sensor logic circuit, is pneumatic components and photoelectron technology union product. It can directly receive sensor signal, as the signal meets specified conditions, need not through the external controller, can make the action on its own to reach the control purpose. It has been used in the object of the conveyor belt, can identify handling the size of the object, make big direct send, small tap. China's pneumatic industrial although achieved certain scale and technology level, but compared with the international advanced level, the gap is great. Pneumatic products value in China accounts for only 1.3% of total world, only 1/21 of the for the United States, Japan, 1/15 of 1/8 of Germany. And this country with a population of more than is not compatible. Pneumatic components look from breed, a Japanese company has 6500 varieties, only 1/5 of it in our country. Product performance and quality level difference is very big also. The pneumatic technology is more and more more applied in various sectors of automatic assembly and automatic processing small, special goods equipment, the original traditional pneumatic components performance are improving, and at the same time they have developed to adapt to the requirements of the market new products, make the variety of pneumatic components increase their development trend mainly in the following aspects: smaller, lighter weight, lower power consumption. In the electronic components, drugs and other manufacturing industries, due to special volume is small, certainly will limit the size of the pneumatic components, miniaturization, light-duty is the first pneumatic components development direction. Abroad, has developed only thumb size, effective cross-sectional area of 0.2 was the super-mini solenoid valves. Develop the appearance of small size and large flow of the components is better. Therefore, the same shape of the size of the valve, the flow has increased by 2 to 3.3 times. There is a series of small electromagnetic valve, the valve body only 10 mm wide, effective area was up to 5; 15 mm wide, effective area of 10 was the and so on.
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