The main components consist of an air duct and a bubble cover, with the bubble cover installed at the top of the air duct. The bottom edge of the bubble cover has several gaps, and the top of the air duct should be higher than the upper edge of the gaps to prevent liquid from leaking down.
Advantages: Stable operation, the rising pipe prevents serious liquid leakage even at low gas velocities in the bubble cap tray, resulting in high elasticity.
