Oxygen supply device of combustion coal furnace

The utility model discloses an oxygen supply device for a combustion coal furnace, which belongs to the field of boiler oxygen supply and comprises a detection box, an adjusting mechanism is arranged in the detection box, an oxygen generator and a low-oxygen box are mounted behind the detection box, an oxygen detection probe is mounted in the detection box, and a circulating pump is mounted on one side of the detection box. An air outlet pipe of the circulating pump is communicated with the interior of the detection box, an air inlet pipe of the circulating pump is communicated with the low-oxygen box, the detection box is communicated with the low-oxygen box through a circulating pipe, the right side of the detection box is connected with an oxygen supply pipe, and the oxygen generator can generate oxygen from air in the low-oxygen box and input the oxygen into the detection box. The oxygen detection probe detects the oxygen concentration in the detection box, when the oxygen concentration in the detection b