Multi-page smoke exhaust port

The utility model discloses a multi-blade smoke vent, which comprises a shell, a baffle plate, a shutter assembly, an air valve, a partition plate, a rotating shaft and blades, the partition plate is arranged on the inner side of the shell, and the air valve is arranged at the upper end of the partition plate. When the smoke sensor detects smoke, a signal is sent to the controller, the controller sends an electric signal to the air valve, the power of the air valve is transmitted to the shutter assembly through driving of the transmission mechanism, each rotating shaft rotates by a certain angle and drives the blades to rotate, at the moment, the smoke outlet is opened, and after smoke exhausting is finished, the air valve is manually closed, so that the air valve is opened. Due to the fact that the blades are connected with the rotating shaft in a fastening mode through the screws, the blades can be conveniently and rapidly detached only by inclining the blades by a certain angle when needing to be detached,