Energy-saving device of sintering denitration hot blast stove

Abstract

The utility model discloses a sintering denitration hot blast stove energy-saving device which comprises a heat return pipe, a plurality of fixing plates are installed on the outer wall of the heat return pipe in a sliding mode, every two opposite fixing plates are connected through a connecting mechanism in a sliding mode, and the inner wall of each fixing plate is fixedly connected with two extrusion plates through a connecting mechanism. A galvanized plate is slidably mounted on the outer walls of the two fixing plates on the same side, a sliding rod is fixedly mounted on the outer wall of each fixing plate through a moving frame, two sliding sleeves are slidably mounted on the outer wall of each sliding rod through a limiting mechanism, and two springs are mounted on the outer wall of each sliding rod; the two ends of each spring are elastically connected with the corresponding movable frame and the inner wall of the corresponding sliding sleeve respectively. According to the utility model, the galvanized plate, the buckles, the springs and other components are arranged, the galvanized plate has good corrosion resistance and super-long service life, and the two buckles can be conveniently opened and closed under the elastic action of the springs, so that the galvanized plate can be conveniently disassembled and assembled.

Description

Technical Field

[0001] This utility model relates to the field of sintering denitrification technology, and in particular to an energy-saving device for a sintering denitrification hot blast stove. Background Technology

[0002] Sintering denitrification is an industrial flue gas treatment technology, mainly used to reduce nitrogen oxide emissions in flue gas. Sintering denitrification is mainly used in industries such as power, steel, and chemicals. It uses specific technical means to reduce nitrogen oxides in flue gas into nitrogen and water, thereby meeting environmental emission standards.

[0003] The denitrification hot blast stove uses coal gas and natural gas for separate mixed combustion. In actual operation, the pressure of coal gas and natural gas fluctuates to a certain extent, causing fluctuations in combustion effect, efficiency, and furnace temperature. Therefore, the hot blast stove is usually connected to an external heat recovery pipe to utilize the flue gas purified at the tail end of the denitrification process, which plays a role in hot air combustion assistance. In the existing technology, most heat recovery pipes are installed with heat insulation sheet on their outer wall to ensure their heat preservation effect, and heat insulation cotton is placed between the heat insulation sheet and the heat recovery pipe. However, most heat insulation sheet will rust after long-term use, and in severe cases, the heat insulation sheet will fall off, which will cause the internal heat insulation cotton to fall off, reducing the temperature of the hot gas and affecting the combustion assistance effect. Therefore, it is necessary to redesign the energy-saving device of the sintering denitrification hot blast stove to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an energy-saving device for sintering denitrification hot blast stoves.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An energy-saving device for a sintering denitrification hot blast stove includes a regenerating pipe. Multiple fixed plates are slidably installed on the outer wall of the regenerating pipe. Two opposing fixed plates are slidably connected via a connecting mechanism. Two extrusion plates are fixedly connected to the inner wall of each fixed plate via a connecting mechanism. A galvanized sheet is slidably installed on the outer wall of two fixed plates on the same side. A sliding rod is fixedly installed on the outer wall of each fixed plate via a moving frame. Two sliding sleeves are slidably installed on the outer wall of each sliding rod via a limiting mechanism. Two springs are installed on the outer wall of each sliding rod. Each spring's two ends are elastically connected to the corresponding moving frame and the inner wall of the sliding sleeve, respectively. A buckle is fixedly installed on the outer wall of each sliding sleeve. Two limiting openings with buckle engagement are provided on the outer walls of both galvanized sheets.

[0007] Preferably, the connecting mechanism includes connecting blocks fixedly installed at both ends of one of the fixed plates, and connecting grooves that cooperate with the connecting blocks are opened at both ends of the other fixed plate, and the corresponding connecting blocks are slidably connected to the connecting grooves.

[0008] Preferably, the connecting mechanism includes a connecting rod fixedly installed on the inner wall of the fixed plate, and the end of the connecting rod is fixedly connected to the outer wall of the extrusion plate.

[0009] Preferably, the limiting mechanism includes a limiting rod fixedly installed inside the movable frame, the limiting rod sliding through two sliding sleeves.

[0010] Preferably, two fixing screws are threaded through the outer walls of the two fixing plates on the same side, and each connecting block has a threaded hole on its outer wall that mates with the fixing screws.

[0011] Preferably, the inside of the heat recovery pipe is coated with an anti-corrosion coating, which is an epoxy resin material.

[0012] The beneficial effects of this utility model are:

[0013] 1. By incorporating components such as galvanized sheet, clips, and springs, the galvanized sheet exhibits excellent corrosion resistance and an exceptionally long service life. Under the elastic action of the springs, the two clips can be easily opened and closed, thus enabling convenient assembly and disassembly of the galvanized sheet.

[0014] 2. By setting a fixing plate, connecting block and fixing screw, the connecting block can be conveniently fixed inside the connecting groove with the cooperation of the fixing screw and screw hole. This can realize the fixed connection between the two fixing plates, and thus realize the convenient installation of the fixing plate on the outer wall of the heat recovery pipe. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the energy-saving device for the sintering denitrification hot blast stove proposed in this utility model;

[0016] Figure 2 This is a top view schematic diagram of the energy-saving device for sintering denitrification hot blast stove proposed in this utility model;

[0017] Figure 3 for Figure 2 A schematic diagram of the vertical section structure;

[0018] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the diagram;

[0019] Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point B in the diagram.

[0020] In the diagram: 1. Heat return pipe, 2. Fixing plate, 3. Connecting block, 4. Fixing screw, 5. Connecting rod, 6. Extrusion plate, 7. Galvanized sheet, 8. Moving frame, 9. Slide rod, 10. Limiting rod, 11. Slide sleeve, 12. Spring, 13. Buckle, 14. Anti-corrosion coating. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-5 The energy-saving device for sintering denitrification hot blast furnace includes a regenerating pipe 1. Multiple fixing plates 2 are slidably installed on the outer wall of the regenerating pipe 1. Two opposite fixing plates 2 are slidably connected by a connecting mechanism. The connecting mechanism includes connecting blocks 3 fixedly installed at both ends of one of the fixing plates 2. Both ends of the other fixing plate 2 are provided with connecting grooves that cooperate with the connecting blocks 3. The opposite connecting blocks 3 are slidably connected to the inside of the connecting grooves. Two fixing screws 4 are threadedly rotatably installed through the outer wall of the two fixing plates 2 on the same side. Each connecting block 3 has a threaded hole on its outer wall that cooperates with the fixing screw 4.

[0023] Each fixed plate 2 has two extrusion plates 6 fixedly connected to its inner wall via a connecting mechanism. The connecting mechanism includes a connecting rod 5 fixedly installed on the inner wall of the fixed plate 2. The end of the connecting rod 5 is fixedly connected to the outer wall of the extrusion plate 6. The two fixed plates 2 on the same side have galvanized plates 7 slidably installed on their outer walls. Each fixed plate 2 has a sliding rod 9 fixedly installed on its outer wall via a moving frame 8. Each sliding rod 9 has two sliding sleeves 11 slidably installed on its outer wall via a limiting mechanism. The limiting mechanism includes a limiting rod 10 fixedly installed inside the moving frame 8. The limiting rod 10 slidably passes through the two sliding sleeves 11.

[0024] Two springs 12 are installed on the outer wall of each slide rod 9. The two ends of each spring 12 are elastically connected to the corresponding moving frame 8 and the inner wall of the slide sleeve 11 respectively. Each slide sleeve 11 is fixedly installed with a buckle 13. The outer walls of the two galvanized plates 7 are opened with two buckles 13 to cooperate in limiting openings. The inside of the heat recovery pipe 1 is coated with an anti-corrosion coating 14, which is made of epoxy resin material.

[0025] In use, the inlet of the regenerator pipe 1 can be fixedly connected to the clean flue and the outlet of the regenerator pipe 1 can penetrate into the combustion chamber, thus achieving the fixed installation of the regenerator pipe 1. During use, a high-temperature pump can be set to extract and transport hot gas. During installation, two opposing fixing plates 2 can be connected to the connecting groove through the connecting block 3 and fixedly connected through the cooperation of the fixing screw 4 and the threaded hole. Thus, the two opposing fixing plates 2 can be driven by the cooperation of the connecting rod 5 to squeeze the outer wall of the regenerator pipe 1, thereby achieving the fixed installation of the fixing plate 2 on the outer wall of the regenerator pipe 1. Then, insulation cotton can be installed on the outer wall of the regenerator pipe 1. Subsequently, the galvanized plate 7 can be slidably installed on the outer wall of the two fixing plates 2 on the same side, thereby covering the insulation cotton with the galvanized plate 7.

[0026] At the same time, the limiting opening can be aligned with the corresponding two buckles 13. Pinch the two adjacent buckles 13 to allow the two sliding sleeves 11 to slide on the outer wall of the sliding rod 9 through the cooperation of the limiting rod 10, and pull the spring 12. At this time, the limiting opening can be locked onto the outer wall of the two buckles 13. When the opening is released, the spring 12 can restore its deformation, causing the sliding sleeves 11 to move back to their original position. This allows the two buckles 13 to move away from each other and onto the outer wall of the galvanized sheet 7 (e.g., ...). Figure 3 As shown in the figure, the galvanized sheet 7 can be fixedly installed. When the heat return pipe 1 transports hot air, the anti-corrosion coating 14 can increase the anti-corrosion effect of the inner wall of the heat return pipe 1, so as to improve the service life of the heat return pipe 1.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An energy-saving device for a sintering denitrification hot blast stove, comprising a regenerator tube (1), characterized in that, The outer wall of the heat recovery pipe (1) is slidably installed with multiple fixed plates (2). Two opposite fixed plates (2) are slidably connected by a connecting mechanism. The inner wall of each fixed plate (2) is fixedly connected with two extrusion plates (6) by a connecting mechanism. The outer walls of the two fixed plates (2) on the same side are slidably installed with galvanized plates (7). The outer wall of each fixed plate (2) is fixedly installed with a sliding rod (9) by a moving frame (8). The outer wall of each sliding rod (9) is slidably installed with two sliding sleeves (11) by a limiting mechanism. The outer wall of each sliding rod (9) is installed with two springs (12). The two ends of each spring (12) are elastically connected to the corresponding moving frame (8) and the inner wall of the sliding sleeve (11). The outer wall of each sliding sleeve (11) is fixedly installed with a buckle (13). The outer walls of the two galvanized plates (7) are opened with two buckles (13) for limiting opening.

2. The energy-saving device for sintering denitrification hot blast stove according to claim 1, characterized in that, The connecting mechanism includes connecting blocks (3) fixedly installed at both ends of one of the fixed plates (2), and connecting grooves that cooperate with the connecting blocks (3) are opened at both ends of the other fixed plate (2), and the corresponding connecting blocks (3) are slidably connected to the inside of the connecting grooves.

3. The energy-saving device for sintering denitrification hot blast stove according to claim 2, characterized in that, The connecting mechanism includes a connecting rod (5) fixedly installed on the inner wall of the fixed plate (2), and the end of the connecting rod (5) is fixedly connected to the outer wall of the extrusion plate (6).

4. The energy-saving device for sintering denitrification hot blast stove according to claim 3, characterized in that, The limiting mechanism includes a limiting rod (10) fixedly installed inside the movable frame (8), and the limiting rod (10) slides through two sliding sleeves (11).

5. The energy-saving device for sintering denitrification hot blast stove according to claim 4, characterized in that, Two fixing screws (4) are threaded through the outer walls of the two fixing plates (2) on the same side, and each connecting block (3) has a threaded hole on its outer wall that mates with the fixing screws (4).

6. The energy-saving device for sintering denitrification hot blast stove according to claim 5, characterized in that, The inside of the heat recovery pipe (1) is coated with an anti-corrosion coating (14), which is an epoxy resin material.

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