Air compressor filters, also called air line filters, are used in condensed air lines as a way to stop liquids and solid contaminants from entering air compressors. They stop these contaminants from entering the equipment and causing damage. A cubic foot of compressed air may harbor millions of dirt particles, in addition to significant amounts of oil and water. Depending on the application, the compressed air might even contain lead, mercury or other heavy metals. Without air compressor filters removing such contaminants, the operation of critical system components, such as cylinders and valves, will be compromised. Air filtration is an essential element of proper compressed air preparation and can also prevent seals from swelling and experiencing premature wear. In addition to reducing downtime, clean compressed air results in lower energy costs.
1.How does an air compressor filter work?
Air line filters work by straining air to trap solid particles and separate liquids from compressed air. To clarify the process, it helps to identify the main components found in an air compressor filter:
Inlet: The air compressor intake or inlet is where air enters the filter. There is an internal cap that forces air downward into a spiral. It’s important to get the right size inlet rather than using a filter smaller than the line.
Filter element: The filter itself is what takes contaminants out of the air, catching particulates over time. Eventually, filters become clogged and must be cleaned or replaced.
Filter bowl: The bowl is the biggest part of the filter that you can see. It is connected to the cap and is threaded or twisted and locked into place.
Filter quiet zone: The contaminants, water and oil collected by the filter all end up in the quiet zone at the bottom of the filter. You will usually find a barrier hanging from the filter bottom, preventing debris from being reintroduced into the air.
The compressed air slows down, allowing particulates to condense on a pad with honeycomb-like qualities. This facilitates the movement of droplets to the drain. After entering the drainage system, droplets are discharged through the drain valve. This stage of filtration removes a majority of the oil, large particles and water droplets.
2.Air compressor Filter Usage and Maintenance
Compressed air filtration plays a hugely important role in any compressor installation. Having a high-quality air compressor filter will protect your system from particulates, dirt, dust, solid particles, and oil. Harmful contaminants like these can cause damage to your equipment and downstream machinery, wearing down parts and causing blockages.
Without a filter, contamination can even affect your manufactured product, causing loss of production and inevitably landing you with a hefty bill. Therefore, it is essential that high performing filters are used. Poor quality filters may offer a reduced performance, leading to large pressure drops and increasing your energy bill.
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