Yeast fermentation tail gas collecting device

The utility model discloses a yeast fermentation tail gas collecting device which comprises a gas inlet, a collecting and aligning cavity, a purifying assembly and an oxygen inlet, the collecting and aligning cavity is connected to the bottom of the gas inlet, a flow guide plate is welded to the inner wall of the collecting and aligning cavity, and a gas guide hole is formed in the middle of the flow guide plate; the purification assembly is installed at the bottom of the collecting and aligning cavity, and the bottom of the purification assembly is connected with an exhaust pipe; the oxygen inlet is formed in the middle of the exhaust pipe. According to the yeast fermentation tail gas collecting device, the gas guide hole is formed in the middle of the flow guide plate, and the top of the flow guide plate is of a hemispherical structure, so that fermentation tail gas entering from the gas inlet can be scattered through the flow guide plate, and meanwhile, normal circulation of the fermentation tail gas can b