Drainage device at boarding gate

The utility model belongs to the technical field of aviation technical structure design, and relates to a drainage device at a boarding gate. Comprising a water accumulation tank (1), a plug (2), an adapter plate (3), a guide pipe connector (4) and a water guide pipe (5), the water accumulation tank (1) is arranged on a floor, one side edge of the water accumulation tank (1) is tightly attached to the lower edge of a boarding gate, and a drainage hole is formed in the bottom face of the water accumulation tank (1); a through hole is formed in the middle of the adapter plate (3), the through hole of the adapter plate (3) corresponds to the drainage hole of the water accumulation tank (1), the adapter plate (3) is connected with the bottom face of the water accumulation tank (1), the guide pipe connector (4) is welded to the outer edge of the through hole of the adapter plate (3), one end of the water guide pipe (5) is connected with the guide pipe connector (4), and the other end of the water guide pipe (5) is