Blast furnace blowing equipment based on fuel ratio configuration

Abstract

The utility model relates to blast furnace metallurgy technical field discloses a blast furnace air blast equipment based on fuel ratio configuration, including blast pipe, the inside bottom of blast pipe is fixedly connected with drive assembly, the left side fixedly connected with piston rod of drive assembly, the left side fixedly connected with sliding rod of piston rod, the left side fixedly connected with connecting column of sliding rod, the left side fixedly connected with U type board of connecting column, the inside rotatory connection has rotary rod a of U type board, the inside rotatory connection has rotary rod b of U type board, the inside fixedly connected with the air pipe of blast pipe, the inside fixedly connected with sliding assembly of air pipe, in the utility model, through optimizing the connecting structure of air pipe and blast pipe, realize the quick disassembly of air pipe, when the air pipe is deformed under the high temperature and high pressure working condition and influences the blast efficiency, can complete the replacement quickly, improves equipment maintenance efficiency and production continuity.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace metallurgical technology, and in particular to a blast furnace blast equipment based on fuel ratio configuration. Background Technology

[0002] A blast furnace is a large industrial piece of equipment used for smelting pig iron. It mainly converts raw materials such as iron ore, coke, and limestone into liquid pig iron through a reduction reaction at high temperatures. Its main body is a vertical cylindrical furnace body, with an outer shell made of steel plates. In the blast furnace blasting equipment, the duct is a key component connecting the blast system to the blast furnace, and its fixed stability directly affects the blasting efficiency and fuel combustion effect.

[0003] In existing technologies, the connection between the air outlet pipe and the blast pipe is mostly fastened with flange bolts or welded, resulting in a complex fixing structure. Especially in the high temperature and high pressure air outlet environment of blast furnace operation, the air outlet pipe is subjected to high temperature and high pressure airflow for a long time, which can easily cause deformation and reduce the fitting accuracy of the original fixing structure.

[0004] Existing fixing methods involve cumbersome disassembly steps, making it difficult to quickly re-fix and restore the seal, and also making it impossible to replace deformed air ducts in a timely manner, affecting the stability of blast parameters and thus interfering with the precise control of fuel ratio. Therefore, a blast furnace blast equipment based on fuel ratio configuration is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a blast furnace blast equipment based on fuel ratio configuration, aiming to improve the problem of cumbersome disassembly of the air outlet pipe in some existing devices.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A blast furnace blasting device based on fuel ratio configuration includes a blast pipe, a drive assembly fixedly connected to the bottom of the blast pipe, a piston rod fixedly connected to the left side of the drive assembly, a sliding rod fixedly connected to the left side of the piston rod, a connecting column fixedly connected to the left side of the sliding rod, a U-shaped plate fixedly connected to the left side of the connecting column, a rotating rod a rotatably connected to the inside of the U-shaped plate, a rotating rod b rotatably connected to the inside of the U-shaped plate, an air outlet pipe fixedly connected to the inside of the blast pipe, and a sliding assembly fixedly connected to the inside of the air outlet pipe.

[0008] As a further description of the above technical solution:

[0009] The drive assembly includes a cylinder, the bottom of which is fixedly connected to the bottom of the blower pipe, and a piston rod is fixedly connected to the drive end of the cylinder. The left side of the piston rod is fixedly connected to the right side of the sliding rod.

[0010] As a further description of the above technical solution:

[0011] The sliding assembly includes a limiting plate, and two toothed plates are slidably connected inside the limiting plate. A pressing rod is fixedly connected to one of the adjacent sides of the two toothed plates.

[0012] As a further description of the above technical solution:

[0013] The bottom of the rotating rod a is rotatably connected to the bottom of the upper extrusion rod, the top of the rotating rod b is rotatably connected to the top of the lower extrusion rod, the far sides of the two toothed plates are in contact with the inside of the air outlet pipe, and the outside of the piston rod is slidably connected to the inside of the blower pipe.

[0014] As a further description of the above technical solution:

[0015] The bottom of the blower pipe is fixedly connected to two support feet, and the right side of the blower pipe is fixedly connected to a power assembly, and the power assembly is fixedly connected to multiple impellers.

[0016] As a further description of the above technical solution:

[0017] The power assembly includes a motor, the left side of which is fixedly connected to the outside right side of the blower pipe, and the drive end of the motor is fixedly connected to a rotating shaft. The outside of the rotating shaft is fixedly connected to the inside of the impeller, and the outside of the rotating shaft is rotatably connected to the inside of the blower pipe.

[0018] As a further description of the above technical solution:

[0019] A fine filter screen is slidably connected inside the blower pipe, and a coarse filter screen is slidably connected inside the blower pipe. Multiple screws are threaded inside the fine filter screen, and the external threads of the multiple screws are connected inside the blower pipe and the external threads of the multiple screws are connected inside the coarse filter screen.

[0020] As a further description of the above technical solution:

[0021] The rotating shaft is externally threaded with a threaded sleeve. Two limiting blocks are fixedly connected to the upper and lower sides of the rotating shaft. A connecting plate is fixedly connected to the outside of the limiting blocks. Multiple brushes are fixedly connected to the front and rear sides of the connecting plate. The right side of the two limiting blocks is in contact with the left side of the threaded sleeve.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by optimizing the connection structure between the air outlet pipe and the blower pipe, the air outlet pipe can be quickly disassembled. When the air outlet pipe deforms under high temperature and high pressure conditions, affecting the blower efficiency, it can be quickly replaced, avoiding blast furnace shutdown or unstable blower parameters due to excessive replacement time. This ensures that the equipment can continuously adapt to the blower requirements under different fuel ratios, and improves equipment maintenance efficiency and production continuity.

[0024] 2. In this utility model, the air is filtered in stages by the combination of coarse and fine filters, effectively intercepting dust of different particle sizes. At the same time, it is equipped with a self-cleaning mechanism that cleans the filter screen in real time with a brush, reducing filter screen blockage, ensuring air cleanliness and flow efficiency, reducing equipment wear caused by dust, ensuring complete fuel combustion, and facilitating stable control of fuel ratio. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a blast furnace blower based on fuel ratio configuration proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the support foot of a blast furnace blower based on fuel ratio configuration proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the rotating rod a of a blast furnace blower based on fuel ratio configuration proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of a coarse filter screen for a blast furnace blower based on fuel ratio configuration, as proposed in this utility model.

[0029] Legend:

[0030] 1. Blower duct; 2. Cylinder; 3. Piston rod; 4. Sliding rod; 5. Connecting column; 6. U-shaped plate; 7. Rotating rod a; 8. Rotating rod b; 9. Limiting plate; 10. Toothed plate; 11. Extrusion rod; 12. Air outlet duct; 13. Support foot; 14. Motor; 15. Rotating shaft; 16. Impeller; 17. Fine filter screen; 18. Coarse filter screen; 19. Screw; 20. Threaded sleeve; 21. Limiting block; 22. Connecting plate; 23. Brush. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1 to 3 This utility model provides an embodiment of a blast furnace blast equipment based on fuel ratio configuration, including a blast pipe 1. The blast pipe 1 provides a rigid mounting frame for all internal structures. A drive assembly is fixedly connected to the bottom of the blast pipe 1. A piston rod 3 is fixedly connected to the left side of the drive assembly. A sliding rod 4 is fixedly connected to the left side of the piston rod 3. Driven by the piston rod 3, the sliding rod 4 moves horizontally linearly along the inside of the blast pipe 1. A connecting column 5 is fixedly connected to the left side of the sliding rod 4. A U-shaped plate 6 is fixedly connected to the left side of the connecting column 5. The connecting column 5 transmits the linear motion force of the sliding rod 4 to the U-shaped plate 6. The U-shaped plate 6 provides stable rotation fulcrums for two rotating rods through its side walls. A rotating rod a7 and a rotating rod b8 are rotatably connected inside the U-shaped plate 6. An air outlet pipe 12 is fixedly connected inside the blast pipe 1. A sliding assembly is fixedly connected inside the air outlet pipe 12. The component includes a cylinder 2, the bottom of which is fixedly connected to the bottom of the blower pipe 1. A piston rod 3 is fixedly connected to the drive end of the cylinder 2. The left side of the piston rod 3 is fixedly connected to the right side of the sliding rod 4. The sliding assembly includes a limiting plate 9. Two toothed plates 10 are slidably connected inside the limiting plate 9. A pressing rod 11 is fixedly connected to the adjacent side of the two toothed plates 10. This structure allows the pressing rod 11 to transmit the rotational force of the rotating rod. When the toothed plate 10 slides along the limiting plate 9 to the target position under the pushing force of the pressing rod 11, the surface of its opposite side will be tightly fitted with the inner wall of the air outlet pipe 12, forming a radial pressing fixation. The bottom of the rotating rod a7 is rotatably connected to the bottom of the upper pressing rod 11, and the top of the rotating rod b8 is rotatably connected to the top of the lower pressing rod 11. The opposite side of the two toothed plates 10 is in contact with the inside of the air outlet pipe 12. The outside of the piston rod 3 is slidably connected to the inside of the blower pipe 1.

[0033] Reference Figure 1 , Figure 4A fine filter 17 and a coarse filter 18 are slidably connected inside the blower duct 1 to pre-intercept large particles in the gas, preventing them from directly impacting the fine filter 17 and causing damage. The fine filter 17 can be pulled and removed axially to intercept fine dust filtered by the coarse filter 18. Multiple screws 19 are threaded inside the fine filter 17, securing the fine filter 17, coarse filter 18, and blower duct 1 as a whole. The external threads of the screws 19 are connected inside the blower duct 1. The external thread of screw 19 is connected to the inside of coarse filter screen 18. The external thread of rotating shaft 15 is connected to threaded sleeve 20. Two limiting blocks 21 are fixedly connected to the upper and lower sides of the external side of rotating shaft 15. A connecting plate 22 is fixedly connected to the external side of limiting block 21. Multiple brushes 23 are fixedly connected to the front and rear sides of connecting plate 22. When rotating under the drive of rotating shaft 15, the dust and impurities attached to the filter screen are removed by the friction between the brush bristles and the surface of coarse filter screen 18 and fine filter screen 17. The right side of the two limiting blocks 21 is in contact with the left side of threaded sleeve 20.

[0034] Reference Figure 1 , Figure 2 Two support feet 13 are fixedly connected to the bottom of the blower pipe 1. The support feet 13 serve as the bottom support structure of the blower pipe 1. A power assembly is fixedly connected to the outer right side of the blower pipe 1. Multiple impellers 16 are fixedly connected to the outer side of the power assembly. The rotating shaft 15 drives the impellers 16 to rotate and generate centrifugal force, which draws the gas from the center and throws it out along the blade channel, converting mechanical energy into the kinetic energy of the gas. The power assembly includes a motor 14. The left side of the motor 14 is fixedly connected to the outer right side of the blower pipe 1. The drive end of the motor 14 is fixedly connected to the rotating shaft 15. The rotating shaft 15 is a key shaft component for power transmission. The outer side of the rotating shaft 15 is fixedly connected to the inside of the impellers 16, and the outer side of the rotating shaft 15 is rotatably connected to the inside of the blower pipe 1.

[0035] Working principle: The support foot 13 fixes the overall structure to the ground. The motor 14 in the power unit transmits power to the impeller 16 through the rotating shaft 15. The rotating shaft 15 rotates in the blower pipe 1, driving multiple impellers 16 to rotate. When the impellers 16 rotate, they generate centrifugal force, which draws in outside air from the center and accelerates it out along the blade channel, ensuring that the airflow flows stably to the blast furnace along the preset path. The equipment adjusts the speed of the impellers 16 through the motor 14 to precisely control the air volume. When the blast furnace fuel ratio increases, the motor 14 increases the speed; when the fuel ratio decreases, the motor 14 decreases the speed, and the air volume decreases to avoid heat waste caused by excessive blowing.

[0036] When the air outlet duct 12 needs to be installed, the cylinder 2 is activated to push the U-shaped plate 6 to the left, which pushes the rotating rods a7 and b8 to both sides to rotate, thereby driving the extrusion rod 11 to rotate, which in turn drives the toothed plate 10 to extrude the air outlet duct 12. The toothed pattern on the outside of the toothed plate 10 increases the friction with the inner wall of the air outlet duct 12, sealing the air outlet duct 12 and the blower pipe 1 and fixing them.

[0037] Before entering the blower duct 1, outside air is first intercepted by the coarse filter 18 to remove large dust particles. The airflow after coarse filtration then enters the fine filter 17 to further intercept fine dust. When the filtration system of the device needs cleaning, the threaded sleeve 20 is screwed into the outside of the rotating shaft 15. The limiting block 21 restricts the threaded sleeve 20 from disengaging from the threaded area of ​​the rotating shaft 15. The motor 14 drives the rotating shaft 15 to rotate. The brushes 23 on the front and rear sides of the connecting plate 22 rotate with the rotating shaft and come into contact with the surfaces of the fine filter 17 and the coarse filter 18, respectively. The brushes 23 penetrate deep into the filter pores to remove dust.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blast furnace blast equipment based on fuel ratio configuration, comprising a blast pipe (1), characterized in that: A drive assembly is fixedly connected to the bottom of the blower pipe (1). A piston rod (3) is fixedly connected to the left side of the drive assembly. A sliding rod (4) is fixedly connected to the left side of the piston rod (3). A connecting column (5) is fixedly connected to the left side of the sliding rod (4). A U-shaped plate (6) is fixedly connected to the left side of the connecting column (5). A rotating rod a (7) is rotatably connected inside the U-shaped plate (6). A rotating rod b (8) is rotatably connected inside the U-shaped plate (6). An air outlet pipe (12) is fixedly connected inside the blower pipe (1). A sliding assembly is fixedly connected inside the air outlet pipe (12).

2. The blast furnace blast equipment based on fuel ratio configuration according to claim 1, characterized in that: The drive assembly includes a cylinder (2), the bottom of which is fixedly connected to the bottom of the blower pipe (1), and a piston rod (3) is fixedly connected to the drive end of the cylinder (2). The left side of the piston rod (3) is fixedly connected to the right side of the sliding rod (4).

3. A blast furnace blast equipment based on fuel ratio configuration according to claim 1, characterized in that: The sliding assembly includes a limiting plate (9), and two toothed plates (10) are slidably connected inside the limiting plate (9). A pressing rod (11) is fixedly connected to one of the adjacent sides of the two toothed plates (10).

4. A blast furnace blast equipment based on fuel ratio configuration according to claim 3, characterized in that: The bottom of the rotating rod a (7) is rotatably connected to the bottom of the upper extrusion rod (11), the top of the rotating rod b (8) is rotatably connected to the top of the lower extrusion rod (11), the two toothed plates (10) are in contact with the interior of the air outlet pipe (12), and the piston rod (3) is slidably connected to the interior of the blower pipe (1).

5. A blast furnace blast equipment based on fuel ratio configuration according to claim 1, characterized in that: The bottom of the blower pipe (1) is fixedly connected to two support feet (13), and the right side of the blower pipe (1) is fixedly connected to a power assembly, and the outside of the power assembly is fixedly connected to multiple impellers (16).

6. A blast furnace blast equipment based on fuel ratio configuration according to claim 5, characterized in that: The power assembly includes a motor (14), the left side of which is fixedly connected to the outside right side of the blower pipe (1), and the drive end of the motor (14) is fixedly connected to a rotating shaft (15). The outside of the rotating shaft (15) is fixedly connected to the inside of the impeller (16), and the outside of the rotating shaft (15) is rotatably connected to the inside of the blower pipe (1).

7. A blast furnace blast equipment based on fuel ratio configuration according to claim 1, characterized in that: A fine filter screen (17) is slidably connected inside the blower pipe (1), and a coarse filter screen (18) is slidably connected inside the blower pipe (1). A plurality of screws (19) are threaded inside the fine filter screen (17), and the external threads of the plurality of screws (19) are connected inside the blower pipe (1). The external threads of the plurality of screws (19) are connected inside the coarse filter screen (18).

8. A blast furnace blast equipment based on fuel ratio configuration according to claim 6, characterized in that: The rotating shaft (15) is externally threaded with a threaded sleeve (20). Two limiting blocks (21) are fixedly connected to the upper and lower sides of the rotating shaft (15). A connecting plate (22) is fixedly connected to the outside of the limiting block (21). Multiple brushes (23) are fixedly connected to the front and rear sides of the connecting plate (22). The right side of the two limiting blocks (21) is in contact with the left side of the threaded sleeve (20).

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