Air Handling Components

The common components of this part are: regulator, air dryer {with regulator function}, four circuit protection valve or air treatment unit.1. Regulator (see Figure 1): X80 ~ 90 years on China's commercial vehicles (using air brake) commonly used regulator to control the compressed air system pressure and unloading of the compressor. The working principle of the regulator: 1 port for the inlet (air source, connected to the air compressor outlet); 21 port for the outlet and protection valve inlet connected to the valve (protection valve outlet); 3 port for the exhaust port.
When the system is inflated, compressed air from the compressor enters through port 1, passes through the screen g into the chamber and opens the check valve port 21, thus entering the protection valve and the storage cylinder in the backward direction. Compressed air into the 21 port can enter the E chamber at the same time (E chamber and 21 port connected), when the 21 port pressure chamber) to reach the system requirements of the pressure, the E chamber air pressure will overcome the spring b pressure to promote the diaphragm c upward movement, thereby driving the piston m upward movement, open the valve d and close the exhaust channel l, at this time, the gas in the E chamber through the d valve into the C chamber to promote the piston k downward movement, thereby opening the valve i, the 1 port of the Gas through the i, through the 3 mouth into the atmosphere due to the 1 mouth of the gas pressure Yang's, check valve e will close by itself, preventing the 21 mouth of the reverse flow of gas, at this time the compressor is in the state of unloading, the gas produced by the 1 mouth and 3 mouth directly into the atmosphere. With the consumption of the system (reservoir) pressure, 21 port and control pressure is also reduced, when the E chamber pressure is not enough to overcome the spring force, the diaphragm c down, and drive the piston m down, thus closing the valve d and open the piston know in the exhaust channel IC chamber of the compressed gas through the m in the exhaust channel l discharged into the atmosphere, at this time, the piston k in the spring force moves upward and thus close the valve i, 1 of the gas can not be The gas of 1 can no longer be discharged into the atmosphere through the ports i and 3 but enters 21 again to refill the system. The unloading pressure of the regulator can be changed by rotating the adjusting bolt a, to change the spring force b, to change the regulator.
2. Air dryer: At present, air dryer has been commonly used in commercial vehicles in China, which has the function of drying air and the function of regulator at the same time. The main role of air drying is to remove the moisture contained in the compressed air, effectively prevent the air pipeline and pneumatic components of corrosion and cold areas of air pipeline and pneumatic components of icing damage, can greatly improve the safety of driving.