Novel high-concentration mine gas and low-concentration mine gas mixing box

The utility model discloses a novel high-concentration mine gas and low-concentration mine gas mixing box. The mixing box comprises a windblown mine gas extraction pipeline, a high-concentration mine gas extraction pipeline, a primary mine gas mixing box, blades, a fixed rod, a blade shaft, a connecting rod, a mine gas concentration detector, a primary mine gas mixing pipeline, a secondary mine gas mixing tank, a secondary mine gas mixing pipeline and a flow control valve. The flows of mine gas in the high-concentration mixing pipeline and the low-concentration mixing pipeline are controlled by using the control valve. The mine gas concentration detector is used for detecting whether the concentration of the mine gas is within a range of 2%-3% in time. The secondary mine gas mixing box is arranged for the purpose of ensuring that the concentration of the mine gas is within a range of 2%-3% in a subsequent utilization process. The novel high-concentration mine gas and low-concentration mine gas mixing box can be used for effectively controlling the concentration of the mixed mine gas within a range of 2%-3% and avoiding the dangerousness of explosion possibly existing in the subsequent utilization process, and has an important meaning in recycling of windblown mine gas.