Compressed air level corresponding to oil content and dust content

Compressed air has different requirements for cleanliness in different usage scenarios. Some places require almost no oil in the air, and almost no dust. Some places require a little looser, but not too dirty. We can understand these different requirements in the order from the cleanest to the most common.

The most stringent type requires that there is basically no trace of oil in the air, and the dust particles are almost negligible. This type of air is usually used in the production process that requires extremely high cleanliness.

The second category requires that the oil content in the air is very, very small, so small that it is difficult to find with ordinary detection methods, and dust particles must also be controlled in a small range.

The third category is slightly more tolerant of oil and dust, but still belongs to the relatively clean category.

The most common type of oil and dust requirements are relatively loose, as long as it is not particularly dirty.

So what kind of machine can produce these different degrees of clean air. In the traditional oil-lubricated air compressor, a small amount of oil will inevitably be mixed into the air during the compression process, so the air it produces usually can only meet the relatively loose requirements. If you want cleaner air, you need to install a variety of filtering equipment in the back, but doing so not only increases the cost, but also requires frequent maintenance and replacement of the filter element.

Oil-free water lubrication air compressor avoids the mixing of oil from the source. Because it does not use oil at all in the compression process, but uses water or other means to make the parts run smoothly, the air produced is naturally very clean, and the oil content can be extremely low or even close to zero. With the appropriate filtering device, it can easily meet the use of high cleanliness requirements.

Water-lubricated air compressor is a very common type of oil-free water lubrication technology. Water is involved in the entire compression process, and the water inside the machine helps reduce the friction of the parts while taking away the heat generated by compression. Because there is no oil in the whole process, there is naturally no oil in the gas. At the same time, the water can also wash away some impurities produced during the compression process, further improving the cleanliness of the air.

When it comes to dust content, it mainly depends on what kind of filtration system is equipped behind the air compressor. Whether it is a non-oil-water lubricated air compressor or a water-lubricated air compressor, if you want to control the dust particles to a very low level, you need to match the appropriate filter. The good news is that because the air produced by this type of machine is already very clean, the requirements for the filter are not so harsh, the service life of the filter element will be longer, and the frequency of replacement will be lower.

Simply put, the higher the requirement for air cleanliness, the more suitable it is to use an oil-free water-lubricated air compressor or a water-lubricated air compressor to supply air. They minimize the mixing of oil and dust from the moment they produce air, making subsequent processing easier and easier to use.