Novel rubber diaphragm aerator

The utility model relates to a novel rubber diaphragm aerator comprising a supporting disc and a rubber diaphragm covering the supporting disc which are circular, wherein pressing grooves are formed in inner and outer edges of the supporting disc, and pressing rings are arranged in the pressing grooves; the section of each pressing groove is U-shaped, and a stepped groove is formed in the top end of the outer wall of the pressing groove; bulges matched with the grooves are formed in the ends of the outer sides of the pressing rings; when the pressing rings are pressed into the pressing grooves, the bulges can be embedded into the grooves; a connecting part of which the section is L-shaped is arranged on the edge of the rubber diaphragm; the connecting part can be tightly attached to the inner wall of the pressing grooves and is tightly pressed in the pressing grooves by the pressing rings. The novel rubber diaphragm aerator is reasonable in design, simple in structure and convenient and firm in installation, the installation program is simplified, the cost is reduced, and the requirements on more aerators of different shapes can be met. Meanwhile, frictional wear of the rubber diaphragm and the supporting disc can be effectively improved, and the service life of the aerator is prolonged.