Disc aerator

The utility model discloses a disc aerator which comprises a disc body with an opening at the upper end, a rubber diaphragm is clamped at the opening of the disc body, a cavity is formed between the disc body and the rubber diaphragm, an air inlet pipe communicated with the cavity is fixed at the bottom of the disc body, a fixed disc is fixed in the cavity, a first through hole is formed in the fixed disc, and a second through hole is formed in the fixed disc. The center of the fixed disc is communicated with a casing pipe, the casing pipe penetrates through the rubber diaphragm and extends tothe position above the disc body, a rotating disc is rotatably arranged below the fixed disc, second penetrating openings in one-to-one correspondence with the first penetrating openings are formed in the rotating disc, and a rotating rod is fixed to the center of the rotating disc, penetrates through the casing pipe and extends to the position above the casing pipe. 本实用新型公开了一种盘式曝气器，盘式曝气器包括上端具有开口的盘体，盘体的开口处卡合有橡胶膜片，盘体和橡胶膜片