Building construction carbon emission filtering device

The utility model discloses a building construction carbon emission filtering device, which relates to the technical field of waste gas emission, and comprises a device main body and a protection mechanism arranged on the outer wall of the device main body, and the protection mechanism comprises a sliding assembly; the sliding assembly comprises a sliding rod, a sliding groove and a protection plate, and by arranging the protection plate, when building construction carbon emission is filtered through the filtering device, in order to prevent the situation that when the filtering device is not used, the exhaust pipe is exposed, dust on a building construction site is adsorbed to the inner wall of the exhaust pipe, and the exhaust pipe is blocked, the protection plate is arranged, and the protection plate is arranged. When the filtering device is not used, a rotary knob is rotated to drive a threaded sliding block to slide along the inner wall of a fixing groove through rotation of a threaded rod, the threaded