Air and oxygen mixer

The utility model relates to an air oxygen mixer which comprises an air pipe and an oxygen ring pipe, the air pipe is connected with the oxygen ring pipe through transition pipes evenly distributed on the circumference, each transition pipe comprises a straight pipe section and a horn mouth section, one side of each straight pipe section is connected with the oxygen ring pipe, one side of each horn mouth section is connected with the air pipe, and a plurality of flow guide plates are arranged in each straight pipe section at intervals. And the guide plates are arranged in parallel. Before entering the air pipe, oxygen passes through the guide plates and is diffused into turbulent flow at the horn mouth section, and the oxygen is uniformly mixed with air in the air pipe through the uniformly distributed transition pipes, so that the combustion efficiency of the hot blast stove can be improved, the gas consumption can be reduced, and the effects of energy conservation and emission reduction can be achieved. 本实用