Abstract: An infusion apparatus to supply compressed air into an industrial mask having a "T"-shape decompressing regulator at a first end of which is provided a conventional coupling device while at a second end, inner screw threads are formed into which a pressure reducing bolt is inserted to regulate the opening of an air supply channel below of which there is provided a purification receptacle filled with carbon filter which is linked by a hose to another purification receptacle filled with carbon filter. Inside of the conventional dustproof mask there is provided an air exhaust hose in a circular form the end of which is penetrating out of the mask and connected to said purification receptacle. Another drill coupling adapter is provided between the oiler and compressed air hose of a rock drill.