The working principle of the utility model is that when working, air enters the lower discharge hole and lower air chamber of the waste water diffuser through the valve, and at the same time enters the upper air chamber through the upper discharge hole.
Since the force area of the lower air chamber is greater than the force area of the upper air chamber, the air in the lower air chamber will lift the movable pallet upward, the rubber disk is compressed, and the air flows from the circumference between the disk body and the movable pallet It sprays outward to form a jet that rotates and rises, and the water around the upper part of the waste water diffuser also flows upward with the air; at this time, the water around the lower part of the expander flows to the waste water diffuser to supplement the air flow away. In the water space, the water flowing to the waste water diffuser will cause the water surface to fall, and the water flowing upward with the air flows back to the falling water surface.