An aeration device

The invention relates to a ventilation device which comprises a main body 100, a flow divider 200 and a male member 300, wherein the plug member 300 and the flow divider are arranged in the main body 100 200th In the main body 100 has a through hole for the air supply 110 is disposed. The water formed by the flow divider 200 from a water jet, said water jet on the plug element 300 impinges and atomized, and the water is mixed with the air which is sucked in through the opening for the air supply 110th The plug element 300 includes a plurality of connected floor discontinuous partition walls 310, a plurality of middle spacer walls 320 and a plurality of upper protruding columns 330. A channel 340 is formed 310 and the adjacent central spacer walls 320 between the adjacent floor partition walls. The total area of ​​the upper protruding columns 330, the total area of ​​the central spacer walls 320 and the total area of ​​the floor partitions 310 form of three discontinuous layers along the direction (X). The invention has the following advantages: it increases the probability of collision of the water jet and thus increases the probability of the number of collisions of the water jet, the effect of saving water is sufficient, the water drops are fully formed.