Respiratory cabin tongue flap device

The utility model belongs to the technical field of individual protection equipment, and particularly relates to a respiratory cabin tongue flap device. According to the technical scheme, the tongue flap comprises a main tongue flap, an auxiliary tongue flap, a fixed base and a pin shaft, one end of the main tongue flap is connected with the fixed base through a pin shaft, and a single-arm lever is formed after connection; the other end of the main tongue flap is bent and is used for being in contact with the diaphragm; one end of the auxiliary tongue flap is connected with the fixed base in the direction opposite to the main tongue flap, the connection position is opposite to the direction of the main tongue flap, and a single-arm lever is formed after connection; after the main tongue flap and the auxiliary tongue flap are connected with the fixed base, two connected single-arm levers shaped like a Chinese character'shan 'are formed; and the main tongue flap and the auxiliary tongue flap are connected with