Compressed air filter is a compressed air carrying harmful substances such as
dust, oil, rust and water into the first stage of compressed air filter
filtration device. Its characteristics are compressed air precision oil
removal filter combined with oil removal, deodorization, dust removal function
as one; can remove 99.9% of oil mist, can lock the oil mist concentration
below 0.01ppm.
Working principle
1、The compressed air which contains dust, oil, rust and water and other
harmful substances enters the first stage filter of compressed air filter.
2、When the compressed air passes through the first stage of the cartridge
mesh filter core to produce the agglomeration effect, the larger particles
will be adsorbed on the filter material, and the water will condense into
larger droplets.
3, into the separation chamber, the compressed air speed slowed down, so that
the particles once again gathered, water mist again condensed in a honeycomb-
shaped water collector.
4、Water laden with impurity particles flows along the bottom to the drainage
device, which is discharged through the automatic or electric drainage valve.
5、More than 95% of the water droplets, oil and large particles in the
compressed air have been filtered out by the first filter element, and the
compressed air after the first stage filtration enters the second stage filter
element.
6、When the compressed air passes through the fiber filter made of special
cotton in the second stage, thousands of small vortexes will be generated,
while the compressed air will be accelerated tens of times, and the center of
the vortex will be like a tornado, forming a vacuum, and the water droplets
not filtered in the first stage will be gasified, converted and filtered out
again, while the particles as small as 5 microns will be completely removed by
the second stage filter.
7、After two stages of filtration to achieve a clean, dry compressed air
without dust, rust, oil and water droplets, to protect the normal operation of
pneumatic equipment and extend the service life of pneumatic equipment.
Compressed air filter selection method:
1、Select the type of filter. According to the different objects of
filtration, choose different types of filters. For example, the filter in the
front of the dryer, shall choose the primary filter to filter the liquid
water, oil and impurities in the compressed air; the filter installed in the
back of the dryer, should choose a high-precision filter to filter the dust in
the compressed air.
2, according to the required treatment of air flow QV (converted to the
standard state) to choose the corresponding specifications of the filter. The
relationship between the rated flow rate QO of the selected filter and the
actual processing flow rate Qr should be as follows: Qr≤QO. Technical
parameters of compressed air filter: In determining the compressed air filter,
the general practice is to identify a reliable supplier, then list the
required performance and allow the manufacturer to choose the ordering method
(filter size, surface area, structure, design, etc.).
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