Reduce outer device that leaks of converter stokehold flue gas

The utility model relates to a reduce outer device that leaks of converter stokehold flue gas, including stokehold petticoat pipe and stokehold guard gate, the stokehold petticoat pipe is close to stokehold guard gate upper portion and sets up, and the stokehold guard gate includes guard gate frame and the heat insulating board of locating guard gate frame inner wall. The stokehold petticoat pipe includes the curb plate that is close to the stokehold guard gate and sets up, and the curb plate includes the first slope section of locating the lower part, and first slope section sets up to stokehold guard gate skew downward sloping, the heat insulating board includes the second slope section adjacent with first slope section, second slope section and first slope section parallel arrangement, and first slope section and second slope section formation flue, the upper end of flue is equipped with sealing mechanism. The utility model discloses a set up the flue that the slope section formed the slope respectively on stokehold petticoat pipe and stokehold guard gate, can increase the area of contact of flue and smoke and dust, reduce the smoke and dust lift velocity, do benefit to the dust removal. Sealing mechanism is set up through the upper end at the flue, the excessive of smoke and dust can be effectively reduced to improve stokehold operational environment.