Multi-stage filtering high-pressure compressed air purifier

A multi-stage filtering high-pressure compressed air purifier comprising:

• an inner housing including an accommodation space formed therein, a main air inlet disposed on a top surface of an upper end portion thereof, an air outlet disposed on a bottom center of a lower end portion thereof, a concave portion disposed in a side surface of a lower end portion thereof so as to have an installation space formed outside the concave portion, and a cylindrical adsorption paper winding part provided in the installation space;
• an outer housing surrounding the inner housing and including an air flow path having a gap spacing apart from the inner housing so that compressed air introduced from an air compressor flows toward the main air inlet through the installation space;
• an oil filtering means including an oil adsorption paper installed in the installation space to filter oil fractions of passing air;
• and
• a moisture filtering means including a dehumidifying agent accommodated in the accommodation space to filter moisture of the passing air,
• wherein the oil filtering means includes a holder mesh having a cylindrical shape and a diameter larger than a diameter of the adsorption paper winding part, having a mesh structure configured to flow air inside and outside, and including an inner surface in surface contact with the oil adsorption paper in a state in which the oil adsorption paper is wound in a roll shape, and fixedly supports the oil adsorption paper, and
• wherein the inner housing has an auxiliary air inlet disposed along a circumferential direction on a side surface at an upper portion of the concave portion.