A roasting furnace flue door

Abstract

The invention provides a flue door of a roaster. The flue door comprises a door body frame and a louver baffle arranged in the door body frame. The louver baffle comprises a plurality of blades which are rotatably connected with the two sides of the door body frame through rotating shafts correspondingly. The flue door is characterized in that seams are formed between the periphery of the louver baffle and the door body frame, and when the blades rotate to a vertical plane, the blades are combined to form the louver baffle located on the vertical plane; and the upper end and the lower end of the louver baffle are connected with the door body frame in a sealed mode through first sealing mechanisms, the left side and the right side of the louver baffle are connected with the door body frame in a sealed mode through third sealing mechanisms, and the blades are connected in a sealed mode through second sealing mechanisms. According to the flue door of the roaster, friction between the louver baffle and the door body frame is avoided, and the jamming phenomenon is prevented; and the louver baffle and the door body frame are sealed through the first sealing mechanisms and the third sealing mechanisms, and the blades are sealed through the second sealing mechanisms, so that a sealed function between the louver baffle and the door body frame is achieved.

Description

technical field [0001] The invention relates to the technical field of roasting furnaces, in particular to a roasting furnace flue door with good sealing performance used in the roasting furnace flue. Background technique [0002] Roasting furnace is a device that uses solid fluidization technology to roast sulfide ore. The heat of reaction is released during the roasting process, and the gas containing sulfur dioxide is mainly used to make sulfuric acid, and the slag is used as a metallurgical raw material. Exhaust gas from roasting furnaces contains sulfur dioxide tail gas, and a large amount of waste is discharged into the atmosphere, which is likely to cause air pollution. At the same time, the discharge of sulfur-containing gases is likely to form acid rain and cause serious pollution to the atmosphere. for the treatment of sulfur-containing gases. [0003] However, once the flue gas desulfurization unit fails, it needs to be shut down for maintenance. During the main...

AI Technical Summary

Problems solved by technology

The technical solution disclosed in the present invention adopts the design that the inserting plate is slidably arranged in the valve body. When the bypass damper door needs to be closed, the inserting plate is inserted into the valve body. When the bypass damper door needs to be opened, the inserting plate is pulled away from the valve body and inserted There is a deformation gap between the four sides of the plate and the valve body. Therefore, when the inserting plate is inserted or pulled out of the valve body, there will be no jamming phenomenon, and there is no sealing problem between the louvers between the inserting plate and the louvers. The sealing function can be realized only by blocking the deformation gap, so the sealing is convenient, the sealing performance is better, and the 100% sealing of the bypass baffle door is ensured, but the technical solution disclosed in this invention needs to occupy a large space

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