Can prevent outer carbide furnace that leaks of waste gas

The utility model discloses a can prevent outer carbide furnace that leaks of waste gas, including the carbide furnace body, the carbide furnace body is the cavity structure, furnace gate standing groove and fire door have been seted up respectively to one side of carbide furnace body, and wherein the furnace gate standing groove is located one side that the carbide furnace body was kept away from to the fire door, and the inner chamber of furnace gate standing groove, fire door and carbide furnace body communicates in proper order, it is connected with the furnace gate to rotate between one side inner wall of furnace gate standing groove, the furnace gate covers the fire door, and furnace gate one side welding of being close to the carbide furnace body has a hollow square slope, the inner wall sliding connection of hollow square slope and fire door, and hollow square slope inner wall one side of being close to the fire door bonds and has sealed the pad, the baffle of the competent setting of one side welding