And cross-shaped jet flow self-rotation type biochemical aerator is arranged on upper part

The utility model provides a top-mounted cross jet flow self-rotating type biochemical aerator. According to the technical scheme, the top-mounted structure is adopted, the main pipe is located abovethe pool body, and the air supply pipe longitudinally extends into the pool body, so that water does not need to be cut off and the pool does not need to be emptied during maintenance and replacement,and the maintenance difficulty is reduced. Meanwhile, the air supply pipe is designed into the upper section and the lower section which are connected through the rotary connector, the spoiler and the cross pipe with the inclined downward micropore nozzle are fixed to the surface of the rotatable lower section respectively, and when the micropore nozzle sprays airflow, the cross pipe, the lower section of the air supply pipe and the spoiler are pushed to rotate based on the counter-acting force of airflow spraying. Therefore, the gas dispersity and the gas-liquid contact effect are improved;the bottom end of the lower