Tail gas purifying device of explosion-proof diesel engine

The invention discloses a tail gas purifying device of an explosion-proof diesel engine. The tail gas purifying device comprises a shell, the shell comprises an outer shell body and an inner shell body, a heat insulation layer is arranged between the outer shell body and the inner shell body, a catalytic converter is arranged in the inner shell body, and the catalytic converter comprises a carrier and catalysts. Tail gas emissions of a mining explosion-proof diesel vehicle under a mine are reduced, modifying design and a series of heat insulation measures are carried out on the catalysts, and the surface temperature is made to be lower than the safety temperature of 150 DEG C.