Some small knowledge of air compressor
Time:
2022-01-10
Source:
Only by fully understanding the relevant knowledge of the air compressor can we better use the air compressor and make it play its full role. caisway take you to understand some of the relevant information of screw air compressor, this content mainly introduces the working principle and working process of the compressor.
Working principle of 1. compressor host
The core component of the screw air compressor is the compressor host, which is one of the positive displacement compressors. The air compression is achieved by the volume change of the tooth grooves of the male and female rotors that are parallel to each other in the casing. The rotor pair rotates in the machine that is precisely matched with it, so that the gas between the cogging grooves of the rotor continuously produces periodic volume changes and pushes from the suction side to the discharge side along the rotor axis, completing the suction, compression, and exhaust Three working processes. Therefore, the type line technology of the twin-screw rotor determines the product positioning grade of the double-screw air compressor.
air compressor host working process:
1. Inspiratory process:
The screw-type intake port on the intake side must be designed so that it can fully inhale during compression. The screw compressor does not have an intake and exhaust valve group. The intake is only adjusted by the opening and closing of a mediation valve. When the rotor rotates, the tooth groove space of the main and auxiliary rotors is the largest when it is turned to the opening of the intake end wall. At this time, the tooth groove space of the rotor communicates with the free air in the air inlet, because all the air in the tooth groove is discharged during exhaust, when the exhaust is finished, the tooth groove is still in a vacuum state. When it is turned to the air inlet, the outside air is sucked in and flows into the main and auxiliary rotors along the axis. In the tooth groove. When the air fills the entire tooth groove, the end surface of the air inlet side of the rotor turns away from the air inlet of the casing, and the air between the tooth grooves is closed. The above is the air intake process.
2. Closure and transportation process:
At the end of the suction of the main and auxiliary rotors, the teeth of the main and auxiliary rotors are closed with the casing. At this time, the air is closed in the teeth and no longer flows out, that is, the closing process. The two rotors continue to rotate, their tooth peaks and tooth grooves coincide at the suction end, and the anastomosis surface gradually moves to the exhaust end, which is the conveying process.
3. Compression and fuel injection process:
In the conveying process, the meshing surface gradually moves to the exhaust end, that is, the tooth groove space between the meshing surface and the exhaust port gradually decreases, the gas in the tooth groove is gradually compressed, and the pressure increases, that is, the compression process. At the same time, the lubricating oil is injected into the compression chamber and mixed with air due to the pressure difference.
4. Exhaust process:
When the meshing end face of the rotor turns to be connected with the exhaust port of the casing, the compressed gas with the highest pressure starts to be discharged until the meshing surface between the tooth peak and the tooth groove moves to the exhaust end face. At this time, the gap between the meshing surface of the two rotors and the tooth groove between the exhaust port of the casing is zero, thus completing the exhaust process. At the same time, the length of the tooth groove between the meshing surface of the rotor and the inlet of the inlet of the casing reaches the casing reaches the maximum, its inhalation process is in progress.
2. the working process of twin screw air compressor
After the air passes through the intake filter to filter out the dust or impurities in the atmosphere, the air enters the compressor host through the intake control valve, and mixes with the injected cooling lubricating oil during the compression process. The compressed mixed gas is discharged from the compression cavity Into the oil and gas separation tank, at this time, most of the oil medium is separated by collision, interception, and gravity, and then enters the oil and gas fine separator for secondary separation, get compressed air with little oil content. When the air is compressed to the specified pressure value, the minimum pressure valve opens, and the compressed air is discharged to the cooler for cooling, and finally enters the use system.
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