Intermittent aeration device

The present invention relates to a batch type aeration apparatus, there is provided an intermittent aeration apparatus, comprising: an open bottom air box (1), placed in the air float tank (2) (1), a gravity ball (3 ), the lever (4), the exhaust valve (5) and the U-shaped exhaust pipe (6), and with the air box (1) air supply duct (7) is connected, wherein the gas source through the duct (7) to continuously incorporating gas air tank (1); after air gas tank (1) is accumulated to a certain volume, the float (2) and gravity ball (3) through a lever (4) controls the exhaust valve (5) is opened, the air gas tank (1) a disposable release; gas when an air tank (1) is released, the float (2) and gravity ball (3) through a lever (4) controls the exhaust valve (5) closed, when the gas after the re-accumulation of air in the tank to a volume (1), a float (2) and gravity ball (3) through a lever (4) controls the exhaust valve (5) open further evolution of gas.