The working cycle of a screw compressor can be divided into three processes of suction, compression and exhaust. As the rotor rotates, each pair of intermeshing teeth successively complete the same duty cycle.
Screw compressor
Intake process compression and injection process exhaust process
1) Inhalation process: When the rotor rotates, the space of the groove of the main and auxiliary rotors is the largest when it is turned to the opening of the inlet end wall. At this time, the space of the groove of the rotor communicates with the free air of the intake port, and the outside air That is, it is sucked into the closed cavity composed of the male and female rotors and the casing. When the air fills the entire groove, the intake end of the rotor is turned away from the air inlet of the casing, and the air between the grooves is closed.
2) Compression process: As the rotor rotates, the inter-tooth volume is continuously reduced due to the meshing of the rotor teeth. The volume occupied by the gas enclosed in the interdental volume is also reduced, resulting in an increase in pressure, thereby achieving a gas compression process. The compression process can continue until the interdental volume is about to communicate with the vent.
3) Exhaust process: When the closed volume between the teeth communicates with the exhaust port, the compressed gas begins to drain. As the volume between the teeth continues to decrease, the compressed gas is completely discharged.
[NT:PAGE]Advantages of screw compressors:
1) Screw compressors are the same as piston compressors and are all volumetric compressors. The screw air compressor has the following advantages in terms of the effect of use.
2) High reliability. The screw compressor has few parts and no wearing parts, so it runs reliably and has a long service life. The interval between overhauls can reach 40-80,000 hours.
Easy to operate and maintain. The screw compressor has a high degree of automation, and the operator does not have to undergo long-term professional training to achieve unattended operation.
3) The power balance is good. The screw compressor has no unbalanced inertia force, and the machine can work smoothly at high speed, which can realize non-basic operation. It is especially suitable for mobile compressors. It is small in size, light in weight and small in floor space.
4) Strong adaptability. The screw compressor has the characteristics of forced air transmission. The volume flow is almost independent of the exhaust pressure, and it can maintain high efficiency in a wide range. It can be applied to various working conditions without any change in the structure of the compressor.
This article is from Shanghai Bicai Compressor Co., Ltd. If you are interested in this product, please visit its online store http://shanghaibicai.b2b.hc360.com/
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Tag: screw compressor rotor screw compressor volumetric compressor screw air compressor
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