Working Principle of a Screw Compressor

The working principle of a screw compressor is primarily based on the rotational motion of the screw. As the screw rotates within the barrel, the helical grooves push the material from the feed end to the discharge end. During this process, the physical state of the material changes, for example, gradually melting from solid particles to a liquid state. The screw is typically divided into several functional sections, including the feed section, compression section, and metering section. The feed section is mainly responsible for receiving and conveying the material; the compression section compresses and heats the material through gradually decreasing screw pitch or groove depth; and the metering section ensures that the material is discharged at a stable pressure and flow rate