Dust removal device for blast furnace

Abstract

The utility model relates to the technical field of blast furnace dust removal, and discloses a dust removal device for a blast furnace, which comprises a dust remover main body and an air inlet box, an adjusting mechanism is arranged in the air inlet box, and a protection mechanism is arranged on the inner wall of the bottom of the air inlet box; the adjusting mechanism comprises an electric push rod, the bottom end of the electric push rod is fixedly connected to the inner wall of the bottom of the air inlet box, the driving end of the electric push rod is fixedly connected with a vertical rod, the front end of the vertical rod is fixedly connected with a plurality of square frames, and the inner wall of the air inlet box is rotationally connected with a plurality of rotating rods. And the outer part of the rotating rod is fixedly connected with a flow guide plate. According to the utility model, the electric push rod pushes the vertical rod and drives the square frame at the front end to ascend, and finally drives the flow guide plate to change the angle, so that the direction and the flow rate of airflow in the air inlet box are flexibly adjusted according to actual requirements, dust-containing gas enters the dust remover main body more uniformly and stably, and the dust removal efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace dust removal technology, and in particular to a dust removal device for blast furnaces. Background Technology

[0002] A blast furnace is a vertical shaft furnace used for ironmaking and is a crucial link in the steel production process. Inside the blast furnace, a series of complex physical and chemical reactions convert raw materials such as iron ore, coke, and flux into pig iron. It utilizes the high temperature and reducing gases generated by the combustion of coke to reduce the iron element in the iron ore. The operation of a blast furnace is continuous, running in an environment of high temperature, high pressure, and significant dust generation. With the development of the steel industry, the scale and output of blast furnaces have continuously expanded, leading to a sharp increase in the amount of dust generated during blast furnace production, resulting in increasingly severe impacts on the environment and production equipment.

[0003] Dust collection devices for blast furnaces are designed to collect and purify the dust generated during blast furnace production. In existing technologies, some blast furnace dust collection devices employ simple cyclone dust collectors, which rely on the rotation of the airflow to separate dust from the gas under centrifugal force. However, this method has low efficiency in capturing fine dust and cannot meet increasingly stringent environmental protection requirements. Other devices use baghouse dust collectors, which offer some filtration for fine dust, but the bags are prone to clogging, requiring frequent replacements and incurring high maintenance costs. Furthermore, the filtration speed is limited when handling large volumes of dust-laden gas, affecting overall dust collection efficiency. Moreover, traditional dust collection devices often lack the ability to precisely regulate the inlet airflow, failing to adapt to changes in dust production under different blast furnace operating conditions. This results in significant energy waste, unstable dust collection performance, and difficulty in ensuring a clean production environment and the normal operation of the blast furnace equipment.

[0004] In the existing technology, some dust removal devices used in blast furnaces cannot flexibly adjust the direction and flow rate of the airflow in the air inlet box according to the actual needs of different production stages of the blast furnace. Some devices use manual adjustment valves to control the airflow, which is not only cumbersome and inefficient, but also has extremely low adjustment accuracy, making it difficult to meet the complex and ever-changing working conditions of the blast furnace. Therefore, a dust removal device for blast furnaces is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a dust removal device for blast furnaces, aiming to improve the problems of cumbersome operation, low efficiency, low adjustment accuracy, and increased cost of some existing dust removal devices for blast furnaces that rely on manually adjusting valves to control airflow.

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

[0007] A dust removal device for a blast furnace includes a dust collector body and an air inlet box. An adjustment mechanism is provided inside the air inlet box, and a protective mechanism is provided on the bottom inner wall of the air inlet box.

[0008] The adjustment mechanism includes an electric push rod, the bottom end of which is fixedly connected to the bottom inner wall of the air intake box. A vertical rod is fixedly connected to the drive end of the electric push rod. Multiple square frames are fixedly connected to the front end of the vertical rod. Multiple rotating rods are rotatably connected to the inner wall of the air intake box. A guide plate is fixedly connected to the outside of the rotating rod. A connecting block is fixedly connected to the front side of the rotating rod. A transmission plate is fixedly connected to the top of the connecting block.

[0009] As a further description of the above technical solution:

[0010] The outer wall of the vertical rod is slidably connected to the inner wall of the air intake box, and a support block is fixedly connected to the inner wall of the air intake box;

[0011] As a further description of the above technical solution:

[0012] Guide rings are fixedly connected to adjacent sides of the two support blocks, and the drive end of the electric push rod is slidably connected to the inner wall of the guide rings;

[0013] As a further description of the above technical solution:

[0014] The top outer wall of the square frame is slidably connected to the inner wall of the transmission plate, and the transmission plate has sliding holes inside.

[0015] As a further description of the above technical solution:

[0016] The top outer wall of the square frame is rotatably connected to a collar, and the outer wall of the collar is slidably connected to the inner wall of the sliding hole.

[0017] As a further description of the above technical solution:

[0018] The protection mechanism includes a pressure sensor, the bottom of which is fixedly connected to the bottom inner wall of the air intake box, a protective cover is installed on the top of the pressure sensor, a distribution pipe is fixedly connected to the top of the protective cover, an air intake pipe is fixedly connected to the top of the distribution pipe, and a fan is fixedly connected to the input end of the air intake pipe.

[0019] As a further description of the above technical solution:

[0020] The output end of the air distribution pipe is fixedly connected to multiple air jets, the outer wall of the air intake pipe is fixedly connected to the inner wall of the air intake box, and the top of the fan is fixedly connected to the bottom of the air intake box.

[0021] As a further description of the above technical solution:

[0022] An air inlet is fixedly connected to the right side of the dust collector body. An air inlet is provided inside the air inlet, and the right side of the air inlet is fixedly connected to the left side of the air inlet box.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the electric push rod serves as the power source. When the blast furnace operating conditions change, it pushes the vertical rod and drives the front square frame to rise. The collar on the top outer wall of the square frame slides in the sliding hole of the transmission plate, converting the linear motion of the vertical rod into the rotation of the transmission plate. This, in turn, causes the rotating rod to rotate through the connecting block, ultimately driving the guide plate to change its angle. This allows for flexible adjustment of the direction and flow rate of the airflow in the air inlet box according to actual needs, enabling the dust-laden gas to enter the dust collector body more evenly and stably, improving dust removal efficiency, ensuring that the discharged gas meets environmental emission standards, protecting the clean production environment, and maintaining the continuous and stable operation of the blast furnace.

[0025] 2. In this utility model, the protective cover on top of the pressure sensor provides initial physical protection, preventing dust and impurities from directly contacting the sensor, thus preventing wear, corrosion, and contamination, and extending its service life. Simultaneously, after the fan starts, it draws in and pressurizes outside air, sending it through the intake pipe into the distribution pipe, and then distributing it to multiple nozzles. The air ejected from the nozzles forms an air curtain around the protective cover, further enhancing protection. The pressure sensor can measure the airflow pressure inside the intake box in real time and convert the pressure signal into an electrical signal output, providing a basis for the operation control of the entire dust removal device. For example, it can adjust the fan speed of the dust collector according to pressure changes, ensuring stable operation of the dust removal device under different working conditions and maintaining good dust removal efficiency. Attached Figure Description

[0026] Figure 1 This is a perspective view of a dust removal device for a blast furnace proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the air inlet box of a dust removal device for a blast furnace proposed in this utility model;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0030] Legend:

[0031] 1. Dust collector body; 2. Air inlet duct; 3. Air inlet box; 4. Electric push rod; 5. Vertical rod; 6. Square frame; 7. Rotating rod; 8. Connecting block; 9. Transmission plate; 10. Guide ring; 11. Support block; 12. Sliding hole; 13. Pressure sensor; 14. Protective cover; 15. Air distribution pipe; 16. Air jet nozzle; 17. Air inlet pipe; 18. Fan; 19. Baffle plate; 20. Air inlet. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 , Figure 2 and Figure 3 This utility model provides an embodiment of a dust removal device for a blast furnace, comprising a dust collector body 1 and an air inlet box 3. An air inlet 2 is fixedly connected to the right side of the dust collector body 1, and an air inlet 20 is opened inside the air inlet 2. The right side of the air inlet 2 is fixedly connected to the left side of the air inlet box 3. The dust collector body 1 is the core component of the entire dust removal device, used to collect and treat dust-laden gas generated during blast furnace production. It is equipped with multiple functional components such as filtration and dust removal to purify the dust-laden gas delivered from the air inlet box 3, so that the discharged gas meets environmental emission standards, ensuring the cleanliness of the production environment and ensuring the continuous and stable operation of blast furnace production. An adjustment mechanism is provided inside the air inlet box 3, and a protective mechanism is provided on the bottom inner wall of the air inlet box 3. The adjustment mechanism inside the air inlet box 3 can adjust the airflow direction and flow rate, and the protective mechanism on the bottom inner wall is used for detection instruments.

[0034] The adjustment mechanism includes an electric push rod 4. The bottom end of the electric push rod 4 is fixedly connected to the inner wall of the bottom of the air intake box 3. A support block 11 is fixedly connected to the inner wall of the air intake box 3. A guide ring 10 is fixedly connected to one side of the two support blocks 11. The drive end of the electric push rod 4 is slidably connected to the inner wall of the guide ring 10. The support block 11 is used to install the guide ring 10. The guide ring 10 is sleeved on the drive end of the electric push rod 4, providing guidance and support for the extension and retraction of the electric push rod 4, ensuring the stability and accuracy of the drive end of the electric push rod 4 during movement. The drive end of the electric push rod 4 is fixedly connected to a vertical rod 5. The electric push rod 4 serves as the power source for the adjustment mechanism, converting electrical energy into mechanical energy. The drive end pushes the vertical rod 5 upward. The outer wall of the vertical rod 5 is slidably connected to the inner wall of the air intake box 3. Multiple square frames 6 are fixedly connected to the front end of the vertical rod 5. The vertical rod 5 slides on the inner wall of the air intake box 3 under the drive of the electric push rod 4, which plays the role of transmitting power and connecting components, driving the square frames 6 to move up and down. Multiple rotating rods 7 are rotatably connected to the inner wall of the air intake box 3. A guide plate 19 is fixedly connected to the outside of the rotating rods 7.

[0035] A connecting block 8 is fixedly connected to the outer front side of the rotating rod 7. A transmission plate 9 is fixedly connected to the top of the connecting block 8. The top outer wall of the square frame 6 is slidably connected to the inner wall of the transmission plate 9. The connecting block 8 serves as a connection and transmission mechanism, converting the force transmitted by the square frame 6 through the transmission plate 9 into the rotational torque of the rotating rod 7, enabling the rotating rod 7 to rotate smoothly. A sliding hole 12 is provided inside the transmission plate 9. A collar is rotatably connected to the top outer wall of the square frame 6. The outer wall of the collar is slidably connected to the inner wall of the sliding hole 12. The square frame 6 converts the linear motion of the vertical rod 5 into the rotation of the transmission plate 9 through the sliding of the collar in the sliding hole 12. The rotating rod 7 is connected to the transmission plate 9 through the connecting block 8, receiving the power transmitted from the square frame 6 and the transmission plate 9. A guide plate 19 is fixed at the other end. When rotating, it drives the guide plate 19 to change its angle, thereby effectively adjusting the airflow direction and flow rate in the air intake box 3 and ensuring the dust removal effect.

[0036] Reference Figure 1 , Figure 2 and Figure 4The protection mechanism includes a pressure sensor 13, the bottom of which is fixedly connected to the inner wall of the bottom of the air inlet box 3. The pressure sensor 13 is a key component for monitoring the pressure inside the air inlet box 3, capable of measuring airflow pressure in real time and converting the pressure signal into an electrical signal output. This data provides the basis for the operation control of the entire dust removal device, such as adjusting the fan speed of the dust collector according to pressure changes, ensuring stable operation of the dust removal device under different operating conditions and guaranteeing the dust removal effect. A protective cover 14 is installed on the top of the pressure sensor 13, providing physical protection. It can prevent dust, impurities, etc., from directly contacting the pressure sensor 13, preventing wear, corrosion, or contamination, extending the service life of the pressure sensor 13, and ensuring its continuous and accurate measurement of the pressure inside the air inlet box 3. To provide reliable data support for the stable operation of the dust removal device, a distribution pipe 15 is fixedly connected to the top of the protective cover 14. Multiple air jets 16 are fixedly connected to the output end of the distribution pipe 15. An air inlet pipe 17 is fixedly connected to the top of the distribution pipe 15. The outer wall of the air inlet pipe 17 is fixedly connected to the inner wall of the air inlet box 3. A fan 18 is fixedly connected to the input end of the air inlet pipe 17. The top of the fan 18 is fixedly connected to the bottom of the air inlet box 3. The fan 18 draws in and pressurizes outside air through its operation. The air inlet pipe 17 introduces the airflow generated by the fan 18 into the distribution pipe 15, which is then distributed to each air jet 16. The air ejected from the air jet 16 forms an air curtain around the protective cover 14, further strengthening the protection of the pressure sensor 13, effectively blocking dust from approaching, and ensuring the measurement accuracy of the pressure sensor 13.

[0037] Working principle: When it is necessary to adjust the airflow direction and flow rate in the air intake box 3, the electric push rod 4 is activated. The bottom end of the electric push rod 4 is fixed to the inner wall of the bottom of the air intake box 3. Its driving end pushes the vertical rod 5 upward. The outer wall of the vertical rod 5 slides on the inner wall of the air intake box 3 to ensure the stability of the movement. The multiple square frames 6 connected to the front end of the vertical rod 5 rise with the vertical rod 5. The top outer wall of the square frame 6 slides on the inner wall of the transmission plate 9. The transmission plate 9 is fixed to the connecting block 8 on the front side of the outside of the rotating rod 7. As the square frame 6 rises, the connecting block 8 is driven to rotate through the transmission plate 9, which in turn causes the rotating rod 7 to rotate. The guide plate 19 fixed on the outside of the rotating rod 7 rotates accordingly, changing the angle of the guide plate 19, thereby realizing the guidance and adjustment of the airflow in the air intake box 3 to meet the dust removal needs under different working conditions.

[0038] After the fan 18 is started, outside air enters the air distribution pipe 15 through the air inlet pipe 17. The input end of the air inlet pipe 17 is connected to the fan 18. The fan 18 is fixed at the bottom of the air inlet box 3. The outer wall of the air inlet pipe 17 is fixed to the inner wall of the air inlet box 3. The output end of the air distribution pipe 15 is connected to multiple jet nozzles 16. Air is ejected from the jet nozzles 16. The pressure sensor 13 is installed on the bottom inner wall of the air inlet box 3. Its top is covered by a protective cover 14. The ejected air forms an air curtain around the protective cover 14, blocking dust and other impurities from approaching the pressure sensor 13. This prevents the pressure sensor 13 from being contaminated by dust and ensures that the pressure sensor 13 can accurately measure the pressure inside the air inlet box 3, providing reliable pressure data support for the stable operation of the entire dust removal device.

[0039] 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 dust removal device for a blast furnace, comprising a dust collector main body (1) and an air inlet box (3), characterized in that: An adjustment mechanism is provided inside the air intake box (3), and a protective mechanism is provided on the bottom inner wall of the air intake box (3); The adjustment mechanism includes an electric push rod (4), the bottom end of which is fixedly connected to the bottom inner wall of the air intake box (3). The driving end of the electric push rod (4) is fixedly connected to a vertical rod (5). The front end of the vertical rod (5) is fixedly connected to multiple square frames (6). Multiple rotating rods (7) are rotatably connected to the inner wall of the air intake box (3). A guide plate (19) is fixedly connected to the outside of the rotating rod (7). A connecting block (8) is fixedly connected to the front side of the rotating rod (7). A transmission plate (9) is fixedly connected to the top of the connecting block (8).

2. A dust removal device for a blast furnace according to claim 1, characterized in that: The outer wall of the vertical rod (5) is slidably connected to the inner wall of the air intake box (3), and a support block (11) is fixedly connected to the inner wall of the air intake box (3).

3. A dust removal device for a blast furnace according to claim 2, characterized in that: Guide rings (10) are fixedly connected to the adjacent sides of the two support blocks (11), and the driving end of the electric push rod (4) is slidably connected to the inner wall of the guide rings (10).

4. A dust removal device for a blast furnace according to claim 1, characterized in that: The top outer wall of the square frame (6) is slidably connected to the inner wall of the transmission plate (9), and the transmission plate (9) has a sliding hole (12) inside.

5. A dust removal device for a blast furnace according to claim 4, characterized in that: The top outer wall of the square frame (6) is rotatably connected to a collar, and the outer wall of the collar is slidably connected to the inner wall of the sliding hole (12).

6. A dust removal device for a blast furnace according to claim 1, characterized in that: The protection mechanism includes a pressure sensor (13), the bottom end of which is fixedly connected to the bottom inner wall of the air inlet box (3), a protective cover (14) is installed on the top of the pressure sensor (13), a distribution pipe (15) is fixedly connected to the top of the protective cover (14), an air inlet pipe (17) is fixedly connected to the top of the distribution pipe (15), and a fan (18) is fixedly connected to the input end of the air inlet pipe (17).

7. A dust removal device for a blast furnace according to claim 6, characterized in that: The output end of the air distribution pipe (15) is fixedly connected to multiple air jets (16), the outer wall of the air intake pipe (17) is fixedly connected to the inner wall of the air intake box (3), and the top end of the fan (18) is fixedly connected to the bottom end of the air intake box (3).

8. A dust removal device for a blast furnace according to claim 1, characterized in that: An air inlet (2) is fixedly connected to the right side of the dust collector body (1). An air inlet (20) is provided inside the air inlet (2). The right side of the air inlet (2) is fixedly connected to the left side of the air inlet box (3).

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