Automatic control device for bottom oxygen blowing refined ferrosilicon gas

The utility model provides a bottom oxygen blowing silicon iron refining gas automatic control device which comprises a gas blowing pipe, one end of the gas blowing pipe is connected with two groups of gas conveying pipelines, each gas conveying pipeline comprises a gas conveying main pipe, one side of the gas conveying main pipe is connected with a gas conveying branch pipe in parallel, and the other side of the gas conveying main pipe is connected with a gas conveying pipeline. A one-way valve, an electric control valve, a screw-in flow meter, a main pipe electromagnetic valve and a pressure reducing valve are arranged on the gas transmission main pipe, and a branch pipe electromagnetic valve, a rotor flow meter and a manual control valve are arranged on the gas transmission branch pipe. The oxygen and the compressed air are respectively provided with a group of air conveying pipelines, and the flow of the compressed air and the flow of the oxygen are separately controlled; the precession type flow meter an