What is the working principle of a fixed screw compressor?

A fixed screw compressor is a mechanical device that compresses gas into high pressure. Its main working principle is to compress the gas through two spiral rotating impellers and push it towards the outlet. Screw compressors have some important working principles, as described below.

1. High quality gas feed required:
One of the main working principles of screw compressors is the need for high-quality gas feed. This is because good quality is suitable for high production and stable operation of compressors. The machine requires dry, clean, and oil-free gas, as gases containing impurities can form corrosion inside the machine, leading to machine damage.

2. The operation of the compressor is based on suction and compression:
The next important working principle of screw compressors is based on their operating mode. It includes suction and compression, enabling it to convert gas from low pressure to high pressure. During the suction process, the spiral impeller rotates to extract external gas at low speed and push it towards the compression chamber. During the compression process, two spiral impellers compress the gas and gradually reduce its volume.

3. Increase in machine compression ratio and energy saving:
The next important working principle of screw compressors is based on the improvement of their compression ratio. As the gas compression ratio increases, the gas volume gradually decreases, resulting in higher energy-saving efficiency of the machine. By selecting an appropriate compression ratio, it can be ensured that the compressor achieves economic and performance results, thereby increasing the service life of the equipment.

4. Heat in compressor exhaust:
The next important working principle of a screw compressor is based on the heat at its exhaust end. Due to the additional heat generated by the compressor, it may cause the machine to overheat, affecting its performance and shortening the equipment's lifespan. Therefore, it is necessary to install a radiator to firmly control the temperature of the spiral impeller and ensure the normal operation of the machine.
In summary, the working principle of a screw compressor is to compress gas through two spiral rotating impellers and push it towards the outlet. Good quality gas entry, based on suction and compression operation, while improving compression ratio and controlling heat in exhaust, can ensure stable and long-lasting operation of screw compressors.