Gas distributor used in yeast fermentation tank

The utility model discloses a gas distributor used in a yeast fermentation tank, which comprises a main body, a stirring mechanism and a gas dispersing mechanism, the stirring mechanism is arranged in the middle of the main body, and the gas dispersing mechanism is arranged at the bottom of the main body. Compared with an existing device, the gas distributor used in the yeast fermentation tank has the advantages that a gas dispersing cylinder can be conveniently and quickly mounted and connected through a second joint, and a lantern ring and a dredging block can be driven to move up and down through a second motor, so that a gas dispersing through hole can be dredged, and further blockage can be prevented; the lower cover plate can be conveniently opened through a clamping head after the rotating shaft is detached, so that the interior can be cleaned and replaced, gas can be singly made to flow outwards through a non-return block, the non-return block is closed through pressure generated when external liquid