Respiratory training sputum excretion device

The utility model relates to the field of respiratory training equipment, in particular to a sputum excretion device for respiratory training, which comprises an air inlet pipe and a cover plate arranged at the exhaust end of the air inlet pipe, the end of the air inlet pipe arranged at one end of the cover plate is obliquely bent upwards, a plurality of exhaust holes are arranged on the cover plate, and a support plate is arranged at the joint of the cover plate and the air inlet pipe. One end of the air inlet pipe is connected with a supporting plate, the center of the supporting plate downwards forms a conical concave structure, an air passing hole is formed in the supporting plate at the center of the conical concave structure, a vibration ball is arranged in the conical concave structure of the supporting plate, the other end of the air inlet pipe is connected with a mouthpiece through a connecting piece, and a filtering membrane is arranged between the connecting piece and the mouthpiece. According to t