How to adjust the air pressure regulating device to 22 air pressure 13 constant pressure?
At this time, compressed air enters the pressure reducing valve on the cylinder head of the compressor through the core rod, so that the valve stem of the pressure reducing valve descends, and the air inlet valve plate of the compressor is pushed away, so that it cannot be closed. So the air compressor is the same as the atmosphere. The air compressor started idling, and no compressed air was produced.
When the air pressure of the air storage tank is lower than 8kg/cm2, the spring pushes the diaphragm downward, so that the core rod contacts the valve, closing the passage between the air storage tank and the pressure reducing valve, and at the same time, the core rod pushes the valve downward away from the valve seat, opening the exhaust passage. Therefore, the compressed air in the pipeline above the pressure reducing valve is discharged through the air outlet of the air pressure regulating valve, the pressure reducing valve rod is reset under the action of the spring, and the air inlet valve begins to play a sealing role. The air compressor is working normally.
Introduction of gas instruments;
It is the core of pneumatic control system. Since 1930s, pneumatic instruments have developed from basic regulating instruments to unit combined instruments and integrated regulating instruments. The rapid development of electronic industry and technology, especially the appearance of electronic computers, has opened up broad prospects for the development of electronic instruments. As we all know, the combination of electrical instrument and computer has incomparable advantages over pneumatic instrument in transmission speed and distance, especially it can easily convert various non-electrical physical quantities into electricity. In recent years, many large and medium-sized enterprises have increasingly adopted electronic control devices. However, it must be noted that the pneumatic regulating instrument still has unique advantages in many aspects, especially it has absorbed many advantages of the development of electric instruments, and a new series of products with fast response, small structure, stable performance and complete functions have emerged. Pneumatic instruments are still widely used at home and abroad. As far as the current situation in China is concerned, the situation of "electricity exists" and "mutual supplement" will exist for a long time, and pneumatic instruments and their control systems still have broad development prospects.
reference data
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