The utility model relates to a flotation column bubble controlgear specifically is a flotation column bubble generator automatic control device, including a plurality of group links installations bubble generator's steam header, the every steam header of group gas circuit all communicates is responsible for to the air feed, and the air feed is responsible for and is installed gas flowmeter, pneumatic control valve and pressure transmitter in steam header's the gas circuit, gas flowmeter, pneumatic control valve and pressure transmitter all are connected to control system. The airflow that this controlgear not only can the accurate control whenever compiles and publishes bubble generator is the same, ensure that even bubble layer that rises and the ore pulp that descends against the current fully contact the collision, can also every aerating flow value and the pressure value of organizing bubble generator of real time monitoring, possesses the periodical blowdown function, reduce the harm that the filth in the gas circuit caused to bubble generator, ensure that the foam maker effectively moves, comprehensive management and control to the flotation column air feed has improved on the whole, an it is accurate of right flotation technology is provided, the efficient job security.