Working principle and advantages and disadvantages of screw compressors

1. Working principle of screw compressors

Screw air compressors use the mutual meshing of the male and female screw rotors to continuously reduce the volume between the teeth and increase the pressure of the gas, thereby continuously generating compressed air. Screw air compressors are also volumetric compressors, but due to the working principle of the screw model, screw air compressors have a stable air supply compared to piston air compressors, and generally do not require air storage tanks.

2. Main advantages of screw compressors

2.1 High reliability: Screw air compressors have fewer parts and fewer wearing parts, so they operate reliably and have a long life.

2.2 Convenient operation and maintenance: Operators do not need to undergo long-term professional training, can achieve unattended operation, relatively simple operation, and can supply air according to the required exhaust volume.

2.3 Good power balance: Screw air compressors have no unbalanced inertial force, the machine can work smoothly at high speed, and can achieve foundationless operation. It is particularly suitable for mobile compressors, with small size, light weight, and small footprint.

2.4 Strong adaptability: The screw air compressor has the characteristics of forced gas transmission, and the exhaust volume is almost unaffected by the exhaust pressure. It runs smoothly, has low vibration, and has stable exhaust. It can maintain high efficiency in a wide range.

2.5 Multiphase mixed transmission: There is actually a gap between the rotor tooth surfaces of the screw air compressor, so it can withstand liquid impact and can pressurize liquid gas, dust-containing gas, and easily polymerized gas.

2.6 The unit exhaust volume is small, saving floor space.

Although the screw compressor has the above, in order to keep the screw compressor unit working normally, safe and reliable, and long service life, a detailed maintenance plan must be formulated, regular maintenance, regular inspection and maintenance must be carried out to keep the compressor clean, oil-free, and dirt-free. Only by fully mastering maintenance knowledge and being familiar with troubleshooting can the smooth operation of the compressor be guaranteed.

3. Main disadvantages of screw compressors

3.1 The operating noise is relatively high, and noise reduction equipment is generally required.

3.2 Because it has a strong balance and can run quickly, the power consumption is relatively high.

3.3 After long-term operation, the screw clearance will become larger, and regular repair or replacement costs are high.

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