Spark catcher

The spark catcher comprises a shell, an air inlet pipe and an air outlet pipe are arranged on the shell, a cyclone cavity is formed in the shell, a conical cavity is formed in the cyclone cavity, the air inlet pipe is communicated with the conical cavity, a cyclone opening is formed in the side wall of the conical cavity, and an exhaust hole is formed in the side wall, away from the conical cavity, of the cyclone cavity. According to the utility model, high-temperature spark particles entrained in the exhaust gas of the explosion-proof diesel engine can be separated from the exhaust gas, collected and extinguished in the spark collector, so that the high-temperature spark particles are prevented from being discharged into the surrounding atmospheric environment along with the exhaust gas, flammable hazardous substances in the environment are prevented from being ignited, and the safe work of the explosion-proof diesel engine is ensured. 一种火花捕集器，包括外壳，所述外壳上设有进风管和出风管，所述外壳内设有旋风腔，所述旋风腔内设有锥形腔，所述进风管与锥形腔连通，所述锥形腔的侧壁设有