Pneumatic technology application the expansion is a sign of pneumatic industrial development. The application of pneumatic components mainly for two aspects: maintenance and supporting. Domestic sales of pneumatic components to be used for maintenance in the past, in recent years, directly as the main supporting sales increased year by year. Application of domestic pneumatic components, from the metallurgical equipment worth tens of millions of yuan to chair only 1 ~ 200 yuan. Railway pull bifurcation, locomotive wheel/rail lubricating, train brake, street cleaning, special lifting equipment within the workshop, using military command vehicle and other specialized development of domestic pneumatic components. This shows that the pneumatic technology has "penetration" to all walks of life, and is growing.

Although the pneumatic industry in China has reached a certain scale and technology level, but compared with international advanced level, the gap is very large. The pneumatic products output value accounted for only 1.3% of the world's total output, is only 1/21 of that in the United States, Japan, 1/15, 1/8 of the German. It is out of proportion to population of more than 10 countries. Look from breed, a Japanese company has 6500 varieties, only 1/5 of it in our country. Product performance and quality level gap is very big also.

Pneumatic technology is increasingly used in various industries due to the automatic assembly and automatic processing of small, special items of equipment, the original traditional pneumatic components are constantly improve performance, and gradually developed to meet the market requirements of new products, make the pneumatic components of the varieties increased, its developing tendency mainly has the following several aspects:

According to lixin pipe joint understanding, smaller volume, lighter weight, lower power consumption. In electronics, medicine and other manufacturing industries, due to the volume of work piece is small, is bound to limit the size of the pneumatic components, miniaturization, light-duty is pneumatic components of the first direction. Overseas has developed a thumb size, only the effective cross-sectional area of 0.2 was subminiature solenoid valve. The dimensions can be developed small and large flow components is more ideal. To this end, the same size shape of the valve, flow rate has been increased by 2 ~ 3.3 times. There is a series of small electromagnetic valve, the valve body only 10 mm wide, up to 5 was effective area; 15 mm wide, effective area of 10 was, etc.

Electromagnetic valve power consumption abroad has reached 0.5 W, will also be further reduced, to adapt to the combined with microelectronics.

Air handling assembly, both at home and abroad mostly adopts the modular block structure, compact size not only, and combination, maintenance is very convenient.

Positioning accuracy of executive element, the improved, increased stiffness, the piston rod is not turning, it is more convenient to use. In order to improve the positioning precision of the cylinder, with brake mechanism and application of cylinder servo system is becoming more common. With the cylinder of the servo system, even if the gas supply pressure and negative by the load change, still can obtain the positioning precision of + / - 0.1 mm.

In international exhibition, various single section of cylinder and piston rod of the cylinder, the cylinder due to the inability of the piston rod to rotary, application on the host, without additional guide can keep certain accuracy. In addition has also developed many with all sorts of steering mechanism of cylinder and slide cylinder components, such as with two guide bar, double cylinder piston rod twin cone cylinder, etc.

Cylinder tube shape is not limited to, round, square, MiZiXing or other shapes, opened on the profiles groove, the installation of sensors and switches, etc., allow the user to install and use more convenient.

Multi-functional, points out, for the convenience of users, to adapt to the needs of the market has developed a variety of more than by the combination of pneumatic components and small pneumatic system is equipped with a control device. As components for mobile small items, will take the two guide cylinder respectively according to X axis and Z axis combination. The component can be moved 3 kg weight, is equipped with a solenoid valve, program-controlled machine, compact structure, occupies the space is little, stroke can be adjusted. And as a kind of upper and lower modules, there are seven kinds of different function modules form, can finish the upper and lower precision assembly line homework, according to working content will be different modules in any combination. There is a kind of manipulator is made up of small swing Angle and can change the shape of the oscillating cylinder and clamp assembly, clamp head position has several kind of chuck is optional.

According to lixin pipe joint, combined with electronic technology, extensive use of sensor, intelligent pneumatic components. With the switch of the cylinder has been widely used at home, switch to smaller volume, higher performance and can be embedded into the cylinder block; Some also carry double color display, can display the position error, make the system more reliable. Using sensors instead of flowmeter, pressure gauge, can automatically control the flow of compressed air, pressure, can be energy saving and ensure the normal operation of using the device. Pneumatic servo positioning system for products into the market. Pneumatic servo valve, the system USES three five to a predetermined target compared with position sensor testing data, the implementation of negative feedback control. Cylinder maximum speed of 2 m/s, 300 mm, the system positioning precision is + / - 0.1 mm. Japan successfully trial-produced a new kind of intelligent electromagnetic valve, the valve match the logic circuit with sensors, is the product of pneumatic components and optoelectronic technology. It can be directly to the sensor signal, when the signal to meet specific criteria, not through an external controller, can make the action itself, to achieve control. It has been used in the objects of the conveyor belt, which can identify the size of the moving object, make big send directly, small shunt.

Higher safety and reliability. The pneumatic technology in recent years the international standard, the standard not only puts forward compatibility requirements, and highlights the security. Pipe pressure test pressure, air source treatment such as increased to 4 ~ 5 times that of the working pressure, pressure time increased to 5 ~ 15 min, even under high and low temperature test. If implement the international standards, domestic, end cover, air source treatment of cylinder castings and pipe joint are difficult to meet the standard requirements. Except the withstand voltage test, the structure is also made some provisions, such as air handling external regulation of transparent shell to add metal shield.

Use pneumatic components of many occasions, such as rolling mill, textile production line, etc., in the work time cannot be interrupted because of the quality problem of the pneumatic components, otherwise it will cause huge losses, so it is important to the work reliability of pneumatic components. On sailing ships, the use of pneumatic components, but it can in the field of pneumatic components factory is not much, because it is particularly high reliability requirements for pneumatic components, must pass the certification of international machinery.

With high speed, high frequency, high response, high life direction. In order to improve the production efficiency of production equipment, improve the working speed of executive element, the imperative. Now our country's working cylinder speed under 0.5 m/s. According to Japanese experts predict that after five years work most of the cylinder speed will increase to 1 ~ 2 m/s, some require up to 5 m/s. Cylinder speed increase, not only enhances the quality of the cylinder and also corresponding improvement on the structure, for example, to configure the hydraulic shock absorption device in order to increase the buffer effect, etc. The response time of the solenoid valve will be less than 10 ms, life expectancy rose to more than 50 million times. America has a clearance seal valve, because the valve core is suspended in the valve body, out of touch with each other, without lubrication, the life as much as 200 million times.

Universal use no oil lubrication technology, satisfy some special requirements. Due to the pollution of the environment and to meet the requirements of electronics, medical and food industries, environment there is no oil, so oil free is the developmental tendency of pneumatic components, and at the same time without oil lubrication can simplify the system. European markets, oil mist device have been eliminated products, generally do no oil lubrication. In addition, in order to satisfy some special requirements, deodorization, and precision filters are constantly developed, filtration precision has amounted to 0.1 ~ 0.3 microns, the filtration efficiency reached 99.9999%.

For some special requirements, improvement and development of pneumatic products, can occupy a piece of the market, get a lot of economic benefits, this has already been consensus. Jinan huaneng pneumatic components company for railway marshalling and the special requirements of wheel/rail lubricating cylinder and valve is developed, by the attention of the railway department.

Use of new materials, combined with new technology. Foreign film type dryer was developed and the dryer using high-tech reverse dialysis membrane filter to the moisture in compressed air, there are energy saving, long life, high reliability, small volume, light weight, etc, applies to flow is not big.

Ptfe with as the main body of the composite materials manufacturing pneumatic seals can heat (260 ℃), hardy (55 ℃) and wear resistance, its application more and more.

According to lixin pipe joint understanding, in order to improve the quality of vacuum die-casting, new technologies, such as hydrogen explosion deburring is phased in pneumatic components manufacturing.

To facilitate maintenance, repair and use. Is studying abroad use sensors to realize pneumatic components and the system has the function of fault prediction and diagnosis.