The utility model relates to the technical field of ventilation and
noise reduction, and discloses an air outlet
barrel capable of reducing
noise based on fan operation, which comprises a connecting air
pipe, an air
pipe expansion section is fixedly connected to one side of the connecting air
pipe, and a silencing
barrel is fixedly connected to one side, far away from the connecting air pipe, of the air pipe expansion section. The side, away from the air pipe expansion section, of the air buffering cover is fixedly connected with the air buffering cover, the end, away from the silencing
barrel, of the air buffering cover is fixedly connected with an air outlet buffering pipe, the upper surface of the air outlet buffering pipe is fixedly connected with an air outlet pipeline, and the lower end of the side face of the connecting air pipe and the lower end of the side face of the silencing barrel are both fixedly connected with a fixing frame. According to the air outlet barrel,
noise generated by operation of the fan is effectively reduced, the mining area and the surrounding environment are remarkably improved, the living and working quality of residents is improved, the
operation mode and ventilation conditions of the fan do not need to be changed, the cost is lower, implementation is easier and more convenient, and remarkable
economic benefits and practicability are achieved.