Pneumatic technology development trend

With the continuous improvement of the degree of production automation, the application of pneumatic technology has expanded rapidly, the variety specifications of pneumatic products have continued to increase, the performance and quality have been continuously improved, and the market sales value has increased steadily. The development trend of pneumatic products is mainly in the following aspects:

First, miniaturization, integration

The limited space requires the outer dimensions of the pneumatic components to be as small as possible, and miniaturization is a major development trend. Now the minimum cylinder inner diameter is only f2.5, and the switch is prepared; the solenoid valve width is only 10mm, the effective sectional area is 5mm2; the pressure reducing valve of interface f4 has also been developed. According to the survey, the demand for miniaturized components has doubled approximately every five years.

The integration of the valve not only combines several valves, but also includes functions such as sensors and programmable controllers. The goal of integration is not only to save space, but also to facilitate the reliability of installation, maintenance and work.

Second, combined, intelligent

The simplest combination of components is a valved, cylinder with a switch. In material handling, a combination of a cylinder, a oscillating cylinder, a pneumatic chuck and a vacuum chuck has been used; and a combination of moving small items is a combination of two cylinders with a guide, X and Y axes, respectively. It is also equipped with a solenoid valve and a program controller. It has a compact structure, small footprint and adjustable stroke.

The smart valve developed by Nippon Seiki Co., Ltd. has sensors and logic circuits and is a combination of pneumatic and optoelectronic technologies. Without the need for an external actuator, the sensor's signal can be read directly and judged by the logic loop to determine the operation of the smart valve and subsequent actuators.

The development of functional modules has been around for more than a decade and is now constantly being improved. These universal modules can be combined in a variety of ways to achieve different mechanical functions, economical, practical and convenient.

Third, precision

In order to make the positioning of the cylinder more precise, the sensor and proportional valve are used to realize the feedback control, and the positioning accuracy is 0.01mm.

In the cylinder precision, a 0.3mm/s low speed cylinder and a 0.01N micro load cylinder have also been developed.

In the gas source treatment, a filter with a filtration accuracy of 0.01 mm, a filtration efficiency of 99.9999% and a pressure relief valve with a sensitivity of 0.001 MPa have been developed.

Fourth, high speed

In order to increase productivity, automated beats are accelerating, and speeding is an inevitable trend.

At present, the piston speed range of the cylinder is 50-750mm/s. The piston speed of the cylinder is required to be increased to 5 m/s up to 10 m/s. According to the survey, after five years, the speed of 2-5m / s, the cylinder demand will increase by 2.5 times, the demand for cylinders above 5m / s will increase by three times. Correspondingly, the valve's response speed will increase, requiring an increase from the current 1/100 second level to 1/1000 second.

Five, no oil, tasteless, aseptic

Humans are increasingly demanding the environment, so pneumatic components that are not oil-lubricated will become popular. There are also special industries, such as food, beverages, pharmaceuticals, electronics, etc., which have stricter requirements on air. In addition to no oil, they also require odorless, sterile, etc. These special requirements of filters will be continuously developed.

High life, high reliability and self-diagnosis

The 50 million life valve and the 3000km cylinder have been commercialized, but there is a high frequency valve life requirement of more than 100 million times in textile machinery, preferably 200 million times. This requirement, the existing elastic sealing valve is difficult to achieve, which makes the gap sealing element regained attention. The US company Numatics has a gas valve that uses a gap seal. After venting, the valve core is suspended in the valve body, forming a frictionless motion, and self-dusting function. The valve life can exceed 200 million times. Although it is an old product, it is worth learning.

Pneumatic components are mostly used in automatic production lines. The failure of components often affects the operation of the whole line. The sudden stop of the production line causes serious losses. For this reason, high reliability is required for the operational reliability of pneumatic components. The pneumatic components required by a chemical fiber company in Jiangsu are absolutely reliable within the set life. If they are expired, they can be replaced. Here again, the problem of balancing the life of various components is proposed, the so-called equal life design. Sometimes, in order to ensure reliable operation, the life indicator has to be sacrificed. Therefore, the self-diagnosis function of the pneumatic system is mentioned on the agenda, and components and systems for self-diagnosis functions such as predictive life are being developed.

With the multi-functionality of mechanical devices, the number of wires is increasing, which not only increases the workload of installation and maintenance, but also is prone to failures and affects the reliability of the work. Therefore, the improvement of the wiring system is also the design of pneumatic components and systems. Valued.

Seven, energy saving, low power consumption

Energy conservation is a permanent issue for enterprises and will be stipulated in the establishment of ISO14000 environmental protection system standards.

The low power consumption of pneumatic components is not only for energy saving, but more importantly, it can be combined with microelectronics technology. The solenoid valve with a power consumption of 0.5W has already been commercialized, and a 0.4W, 0.3W gas valve has also been developed, which can be directly controlled by a PC.

Eight, mechanical and electrical integration

In order to accurately achieve pre-set control objectives (such as switch, speed, output force, position, etc.), closed-loop feedback control should be used. The conversion between gas-electric signals becomes the key to achieving closed-loop control, and proportional control valves can be the interface for this conversion. It is a major issue in the development of pneumatic technology to develop various forms of proportional control valves and electro-pneumatic proportional/servo systems for a long period of time, and to make them perform well, work reliably and at low prices.

At present, there are many examples of proportional/servo system applications, such as the precise positioning of the cylinder; the suspension system for the vehicle to achieve good vibration damping performance; the automatic tilting device when the cable car turns; the robot that serves the patient. How to make the above examples more practical and economical needs further improvement.

9. Meet the special requirements of certain industries

In the fierce market competition, the development of special pneumatic components for the specific requirements of certain industries is an important aspect of market development, and all factories are very concerned. Recently developed in the domestic pneumatic industry, such as special cylinders for aluminum industry (high temperature resistant, self-locking), special cylinders for railways (seismic, high reliability), special air valves for rail lubrication (resistant to low temperature, self-filtering capacity), environmentally friendly automotive gas systems ( Multi-media, excellent performance, etc. Gradually, the pneumatic and electric tools are gradually summarized in [1].

Ten, the application of new technologies, new processes, new materials

Profile extrusion, casting impregnation and module assembly technology have been widely used in China more than ten years ago; new die casting technology (hydraulic core pulling, vacuum die casting, etc.), new deburring process (explosion method, electrolysis method, etc.) have been made in China. Gradually promote; piezoelectric technology, bus technology, new soft magnetic materials, diafiltration membranes, etc. are being applied; super-finishing, nanotechnology will also be transplanted.

The scientific and technical personnel in the pneumatic industry pay special attention to the new development of seals. Once new structures and seals of new materials appear, they will be adopted.

XI. Standardization

Implementing standards, especially ISO international standards, is a principle that companies must follow. It has two aspects to do: First, pneumatic products should implement current standards related to pneumatics, such as terminology, technical parameters, test methods, installation dimensions and safety indicators. The second is that enterprises must establish a standard guarantee system, there are three: quality (ISO9000), environmental protection (ISO14000) and security (ISO18000).

The standards are constantly being added and revised, and the company and its products will continue to develop and update. Only in this way can the pneumatic technology develop steadily.

Twelve, security

From the recently issued ISO international standards for pneumatics, the safety requirements for pneumatic components and systems are very strict. In the ISO4414 pneumatic general rules, the dangerous elements are divided into 14 categories, mainly including mechanical strength, electrical appliances, noise, and control failure. ISO International has also promulgated the ISO18000 standard, requiring companies to establish a security assurance system and place security issues on a particularly important agenda. To this end, product development and system design to effectively consider safety indicators is also the general trend of the development of pneumatic technology. For domestic companies, since past industry standards have neglected safety issues, it is necessary to re-evaluate and correct products that have already been put on the market.

XIII. Ergonomics design

Most repetitive work can cause strain. White Finger (HAVS) – Destroys finger blood circulation. Statistics: In the environment of 10m/S2 in 5 years, 30% of operators will have white finger symptoms. CTD – cumulative injury.

A growing number of global technology leaders focus on ergonomics and offer operator-friendly tools with the best ergonomics. The ergonomic design covers all the factors involved in the interaction between the device and the operator. Among the parameters that need to be considered are the grip design, the load applied to the operator, the torque reaction from the tightening tool, temperature, vibration emissions, noise emissions, dust and lubricant.

 Lock the temperature of 38℃, constant temperature Shower Set, enjoy your bath time and  thermostatic simple age

 The top-spray is designed with air injection technology, high efficience and water saving,Feeling a variety water outlet by one button, which is very convenient. Thermostatic shower can make your body to enjoy a healthy spa at home .

Shower Set

Shower Set,Shower Faucet Handles,Shower Fixtures,Shower Control Valve

Kaiping Oubao Sanitary Ware Hardware Co., Ltd. , http://www.oubaofaucet.com