Device for freely adjusting perpendicularity of air pipe

The utility model belongs to the technical field of construction devices, and particularly discloses a device capable of freely adjusting perpendicularity of an air pipe, which comprises a fixed base, an operating rod and a supporting mechanism used for fixing and supporting the air pipe, a threaded sleeve is welded on the fixed base, and one end of the operating rod is in threaded connection with the threaded sleeve. The end, away from the threaded sleeve, of the operating rod is fixedly connected with a baffle, and the supporting mechanism is placed on the operating rod and located between the fixed base and the baffle. During use, a worker fixes the supporting mechanism on the air pipe in a sleeving manner, fixes the fixed base on a wall according to the width of the air pipe, connects the operating rod into the sleeve, lifts the air pipe, puts the supporting mechanism on the operating rod, enables the baffle to be tightly attached to the supporting mechanism, rotates the operating rod, pushes the supporti