Spark catcher

The utility model relates to the technical field of boiler flue gas dust removal, in particular to a spark catcher which comprises a steel structure supporting frame, the upper end of the steel structure supporting frame is fixedly connected with a catching shell, the front end of the catching shell is provided with an air inlet shell, the rear end of the catching shell is provided with an air outlet shell, and the air inlet shell and the air outlet shell are fixedly connected with the steel structure supporting frame. A left side wall plate is fixedly connected to the left side of the trapping shell, a right side wall plate is fixedly connected to the right side of the trapping shell, a pulse dust cleaning device is arranged at the upper end of the air outlet shell, and a silk screen trapping assembly is arranged in the trapping shell. According to the utility model, the net sheet structures are connected together through the fixing bolts; the upper opening of the windward side flange of each trapping unit i