your current location: > Technical Exchange >
It can be seen from the aerodynamic skill codes in recent years that these codes not only put forward communication requirements, but also emphasized gender. The pressure test pressure of the pipe joint and the air source processing shell is increased to 4 to 5 times the working pressure, and the test time is increased to 5 to 15 minutes. The test should be performed at high and low temperatures. If these specifications are followed, it will be difficult for domestic cylinders, end caps, air source treatment castings, and fittings to meet the specifications. In addition to the pressure test site, some regulations are also made on the structure, such as adding a metal protective cover on the outside of the transparent enclosure for air source treatment.
As far as the types of pneumatic components are concerned, a Japanese company has 6,500 types, while China only needs one-fifth of them. The distance between product function and quality level is also large. As pneumatic technology is increasingly used in active assembly and active processing equipment for small and special items in various industries, the original traditional functions of pneumatic components are constantly being improved. New products adapted to the needs of the mall are constantly being developed, and the types of pneumatic components are increasing. The development trend is: small size, light weight, low power consumption. In manufacturing industries such as electronic components and pharmaceuticals, the size of processing components will necessarily limit the size of pneumatic components. Miniaturization and weight reduction are the development direction of pneumatic components. Foreign countries have developed ultra-small solenoid valves with a very small thumb and a useful cross-sectional area of 0.2mm2. It is ideal to develop components with small size and high flow. Therefore, the valve flow of the same external dimensions has increased by 2 to 3.3 times. There are a series of small solenoid valves with a body width of only 10 mm and a useful area of up to 5 mm 2; a width of 15 mm and a useful area of up to 10 mm and so on.
The expansion of the application field of pneumatic component skills is a sign of the development of the pneumatic industry:
The application of pneumatic components should be two aspects: repair and matching.
In the past, domestic sales of pneumatic components were for maintenance and repair. In recent years, the proportion of direct matching sales has increased year by year. The application range of domestic pneumatic components ranges from metallurgical equipment worth tens of millions of yuan to chairs of only 1 to 200 yuan. Specially developed domestic pneumatic components are used in railway switchgear, smooth wheels and rails, train brakes, street cleaning, special workshop lifting equipment, military command vehicles, etc. This shows that pneumatic technology has "penetrated" into various industries and is growing.
Intelligent development of pneumatic components. Cylinders with switches have been widely used in China. The switch is small in size and powerful in function, and can be embedded in the cylinder block. Some also have a two-color appearance, which can display azimuth errors and make the system reliable. Using sensors instead of flow meters and pressure gauges can actively control the flow and pressure of compressed air, save energy and ensure the normal operation of the equipment.
Japan has successfully developed a new type of intelligent solenoid valve, which is equipped with a logic circuit with a sensor. It is a product combining pneumatic components and photoelectric technology. It can directly receive the signal from the sensor. When the signal meets the specified conditions, it can complete the operation by itself, without the need to achieve the control purpose through an external controller. Now, it has been applied to the conveyor belt of objects, which can identify the size of the object being transferred, so that large objects can be directly transferred, and small objects can be transferred.
Although China's pneumatic industry has reached a certain level of planning and technology, it is far from reaching the advanced water level. The output value of China's pneumatic products only accounts for 1.3% of the world's output value, only 1/21/1/15 of Japan and 1/8 of Germany. This is not commensurate with a large country with a population of more than 1 billion.
Products are already available in the Pneumatic Servo Positioning Store. The system uses a three-position five-way pneumatic servo valve to compare the predetermined positioning strategy with the detection data of the orientation sensor, and implements negative feedback control. When the cylinder speed reaches 2m / s and the stroke is 300mm, the positioning accuracy of the system is 0.1mm
Solenoid pulse valve
|Tongteng 30 ton power plant boiler uses pulse dust collector||Cathode carbon block forming machine bag filter technology||ppc air box pulse bag filter installation|
|Detection method for damage of dust bag||2. The control technology of pulse bag filter is analyzed.||Boiler desulfurization tower demister manufacturing requirements|
|Analysis of the influence of pulse valve on diaphragm sensitivity||Tongteng pulse dust remover advances your choice of Tongteng||Solution of filtering method of Tongteng pulse dust collector bag|
|Features of automatic control of dust removal system|