How does the two-stage compression screw air compressor save energy?
In fact, the two-stage compression refers to the combination of the
first stage compression rotor and the second stage compression rotor in a
casing, which are directly driven by helical gears respectively.
Natural air enters the first stage of compression through the air
filter, mixes with a small amount of lubricating oil in the compression
chamber, and compresses the mixed gas to the interstage pressure at the
same time. The compressed gas enters the cooling channel and contacts
with a large amount of oil mist, which greatly reduces the temperature.
The cooled compressed gas enters the second stage rotor for secondary
compression and is compressed to the final exhaust pressure. Finally,
the compressor is discharged through the exhaust flange to complete the
whole compression process.