Compressed Air Purification System Filter Introduction

Why is the hazard of oil in the air the greatest?

Answer: In some places with strict requirements, such as in the pneumatic control system, a drop of oil can change the condition of the air hole. Paralyze the normal automatic operation of the production line. Sometimes, the oil will also swell the sealing ring and cylinder of the pneumatic valve, causing slow operation, serious and even blockage. In processes performed by air, such as blown parts, oil can also cause shape defects or surface contamination of the product.

What are the main sources of oil pollution?

Answer: Since most compressed air systems use lubricating oil compressors, the machine vaporizes oil into oil droplets during work. It is formed in two ways:

One is the so-called "dispersed droplets" produced by the shearing action of piston compression or blade rotation. Its diameter is from 1 to 5 μm.

The other is the "condensed droplets" formed by vaporization when the lubricating oil cools the high-temperature body, and its diameter is generally less than 1 μm. Such condensed oil droplets usually account for more than 50% of the total oil weight, accounting for more than 50% of the actual particle number of the total oil. 99%.

What is the commonly used measurement standard for oil quantity?

Answer: The amount of oil pollution generally adopts a small measurement standard to clearly show its accumulation status. lOOsefm (standard cubic feet per minute) contains lppmW/W (parts per million by weight) in the air, and the oil flow is equivalent to 150ml per month.

Can oil-free compressors completely eliminate the generation of pollutants?

Answer: No. Under the most ideal working conditions, this type of compressor will also produce hydrocarbons of no less than 0.5ppmW/W. Even if it is based on 100scfm gas volume, the vaporized condensate produced per month will exceed 15mL.

What is a compressed air filter?

A: A compressed air filter is a device that filters and purifies compressed air. We generally refer to high-efficiency precision filters in compressed air system pipelines.

How do filters work?

Answer: The general filter element is composed of fiber media, filter screen, sponge and other materials. After the solid and liquid particles (drops) in the compressed air are intercepted by the filter material, they condense on the surface of the filter element (inside and outside). The droplets and impurities accumulated on the surface of the filter element are settled to the bottom of the filter by gravity and then discharged by automatic drainer or manually.

What are the characteristics of several general types of filters?

Answer: The adsorption (activated carbon) filter that uses the surface to generate attraction has problems such as limited service life, and the adsorption capacity of the adsorbent decreases after absorbing oil.

Absorbents, the primary materials of absorbent filters, such as wool, linoleum, and cotton, lose their structural advantages and rapidly fail after absorbing liquid into the interior and flooding them.

Mechanical separators and mesh air filters, usually classified by 5, 10, 20, and 40 μm, are ineffective against the tiny particles that make up the majority of oil droplets.

What are the characteristics of glass fiber material used in filtration?

Answer: Glass fiber can very effectively separate lubricating oil droplets with a diameter ranging from 50 to 0.01 μm, and it does not need to absorb or absorb when filtering. And it is very effective, superior to other materials.

Lingyu ~ 1.0 0.01 micron precision moisture removal compressed air filter