The air filter is the most important part of the three filters that protect the machine, because the quality of oil and fuel is controllable, the quality of air is the most uncontrollable, and the impurities in the air are the types that need to be properly filtered.

A good air filter must have several sizes to check:

1. Strength. There is no accurate industry reference standard for the air filter industry, and the comprehensive evaluation factors are too many and complicated, which require disassembly experiments and are not suitable for understanding. So I think the strength of the air filter manufacturers is more important. Bad manufacturers will mark some technical parameters incorrectly. For example, cheap air filters are everywhere. Do we still want to see it after we buy it? So don't look for cheap goods from inferior manufacturers, which are basically not cheap.

2. From a visual point of view, high-quality air filters have the following characteristics:

1, the number of folding uniform, no obvious deformation, high folding height, large amount of dust;

2. The filter paper is smooth and has no obvious odor;

3. The air filter with rubber cover in the high-quality air filter, the rubber cover is moderately soft and hard, fits well during installation, is not easy to deform, and prevents dust from entering from the gap;

4. The iron cover air filter in the high-quality air filter has high processing precision and is installed in place.

From the perspective of technology and production:

1. Filter paper is the key component of the filter element. First of all, we must choose the appropriate filter paper: for example, the air filter paper of the oil-injected screw machine, the air permeability of the filter paper of international brands such as MANN and DONALDSON is about 110-160. Relatively speaking, the pressure difference is reduced and it is not easy to fold, but the filtration efficiency cannot be guaranteed.

2. Select the appropriate polyurethane foam material: the end face has good flexibility and good resilience. The stability to temperature changes is good, the compression is not large, and the size is precisely matched with the air filter assembly to prevent short circuit of the intake air.

3. The origami process of the air filter is one of the key links in the production of the air filter, and there is a regular interval between each layer:

Prevent filter paper sticking-increase the bird capacity of filter paper

Viscosity of filter paper-in high humidity environment, the dust holding capacity of filter paper will be greatly reduced;

Test results-extended service life: 50%

It is understandable for users to purchase and replace equipment consumables to save maintenance costs, but not everyone can accurately judge product quality, which also provides opportunities for inferior products.

Through the above points, quickly identify and select high-quality air filters to ensure that the air entering the air compressor is sufficient and clean, avoid shortening the maintenance cycle, machine damage and other losses, and greatly reduce the overall operating cost.