Air outlet structure of dust hood at ladle-to-ladle station of steel ladle

Abstract

The utility model discloses an air outlet structure of a dedusting cover at a steel ladle pouring station, which relates to the technical field of dedusting of metallurgical equipment and comprises an air guide pipe laid along the surface of the dedusting cover, one end of the air guide pipe is connected with an air outlet body, and the other end of the air guide pipe extends above a crystallizer and is used for directionally guiding airflow; the air outlet body is connected with the air guide pipe, the section of the air outlet body is of a wedge-shaped structure, and the area of the section is gradually increased from the end connected with the air guide pipe to the far end so as to enhance the air gathering effect and enlarge the smoke dust gathering range; the reinforcing triangular body is arranged at the bottom of the air outlet body, and the two sides are fixedly connected with the side wall of the dust hood to form an integral rigid supporting structure. The air duct structure is optimized through the air outlet body of the wedge-shaped structure, airflow vortex can be reduced, and compared with an original dust hood air outlet, the air gathering effect is enhanced, so that the effective smoke dust gathering range is enlarged, and dust can be effectively prevented from overflowing.

Description

A dust collector outlet structure for a ladle pouring station Technical Field

[0001] This utility model relates to the field of dust removal technology in metallurgical equipment, specifically to a dust removal hood outlet structure for a ladle pouring station. Background Technology

[0002] In the steelmaking process, a large amount of high-temperature dust is generated when molten steel is poured from the ladle to the tundish via the ladle turret, and when molten steel is poured from the tundish to the crystallizer. While existing dust hoods can effectively capture dust at the ladle turret, the wide dust diffusion range and low capture efficiency in the tundish-to-crystall section result in significant leakage of PM2.5 and other fine particulate matter, making it difficult to meet the national standard emission limit of <10mg / m3. Therefore, there is an urgent need for an outlet structure that can improve dust capture efficiency and optimize airflow distribution. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this utility model provides a dust removal hood outlet structure for the ladle pouring station. By optimizing the layout of the air duct and the shape of the outlet, it can effectively enhance the local air volume and structural stability, thereby reducing the overflow of smoke and dust.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A dust collection hood outlet structure for a ladle pouring station, comprising, wherein...

[0006] The air duct is laid along the surface of the dust collector cover, with one end connected to the air outlet body and the other end extending to the top of the crystallizer to guide the airflow in a directional manner.

[0007] The air outlet body is installed at the end of the dust collector and connected to the air duct. It has a wedge-shaped cross-section, and the cross-sectional area gradually increases from the end connected to the air duct to the far end to enhance the air gathering effect and expand the dust collection range.

[0008] A reinforced triangular body is set at the bottom of the air outlet body, and its two sides are fixedly connected to the side wall of the dust collector hood to form an integral rigid support structure.

[0009] As a further implementation, the cross-section of the air duct is rectangular, which can distribute airflow evenly, reduce local resistance, and extend service life.

[0010] As a further implementation, the air duct is welded and fixed to the air outlet body to ensure the overall structural strength.

[0011] As a further implementation, an arc-shaped guide plate is fixedly installed at the bend of the air duct to perform directional pressurization and reduce eddies, which can increase the air volume from the tundish to the crystallizer section, allowing the smoke and dust to quickly enter the dust removal system and effectively improve the collection efficiency.

[0012] As a further implementation, the extension direction of the air duct is parallel to the molten steel pouring path from the tundish to the crystallizer, ensuring that the airflow covers the dust diffusion area.

[0013] As a further implementation, the width of the air duct near the crystallizer is increased to allow the airflow to better cover the smoke and dust diffusion area.

[0014] As a further implementation, the length of the air outlet body is matched with the lateral width of the dust collector hood.

[0015] As a further implementation, the reinforcing triangle is a steel plate with an isosceles triangular cross-section. The base of the reinforcing triangle is welded to the bottom of the air outlet body, and the two waist sides are welded to the side wall of the dust collector cover to form a stable support.

[0016] As a further implementation, the air duct, the air outlet body, and the reinforcing triangular body are all made of high-temperature resistant steel plates, and the surface is coated with an anti-oxidation coating.

[0017] As a further implementation, the thickness of the anti-oxidation coating is 0.5-1.2 mm, and the temperature resistance is not lower than 800℃.

[0018] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0019] 1. This utility model optimizes the air duct structure through the wedge-shaped air outlet body, which can reduce airflow vortex and enhance the air gathering effect compared with the original dust collector hood air outlet, thereby expanding the effective dust collection range and effectively preventing dust escape. This ensures that the PM2.5 emission concentration stably meets the national standard requirement of <10mg / m3, making it more environmentally friendly.

[0020] 2. This utility model achieves directional pressurization by setting an arc-shaped guide plate at the bend of the air duct, which can increase the air volume from the tundish to the crystallizer section, allowing the smoke and dust to enter the dust removal system quickly, and improving the collection efficiency by more than 30%.

[0021] 3. This utility model uses a reinforcing triangular body set at the bottom of the air outlet body and welded to the dust cover to form a rigid structure, which can effectively enhance the resistance to vibration and high temperature deformation, ensure the stability of the structure, and extend the service life of the equipment. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0023] Figure 1 is a plan view of an embodiment of the present utility model;

[0024] Figure 2 is an installation side view of an embodiment of this utility model.

[0025] In the diagram: 1. Air duct; 2. Arc-shaped baffle; 3. Air outlet body; 4. Reinforcing triangular body; 5. Dust collector cover. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] Example 1

[0031] In a typical embodiment of this application, a dust removal hood outlet structure for a ladle pouring station is provided, as shown in Figures 1-2. It includes an air guide duct 1, which is laid along the surface of the dust removal hood 5. One end is connected to the outlet body 3, and the other end extends to the top of the crystallizer to guide the airflow in a directional manner.

[0032] The arc-shaped guide plate 2 is placed at the bend of the air duct 1 to perform directional pressurization and reduce turbulence;

[0033] The air outlet body 3 is connected to the air duct 1. The cross-section is wedge-shaped, and the cross-sectional area gradually increases from the end connected to the air duct to the far end to enhance the wind gathering effect and expand the dust collection range.

[0034] The reinforcing triangle 4 is set at the bottom of the air outlet body 3, and its two sides are fixedly connected to the side walls of the dust collector 5 to form an overall rigid support structure.

[0035] Specifically, as shown in Figure 1, the dust collector hood 5 is equipped with the air outlet structure of this embodiment, including an air outlet body 3, a guide pipe 1, and a reinforcing triangular body 4. The air outlet body 3 is connected to the dust collector hood 5 to allow dust to circulate. The air outlet body 3 is connected to the guide pipe 1, which is installed along the surface of the dust collector hood. The end of the guide pipe away from the air outlet body extends in a direction parallel to the steel pouring path from the tundish to the crystallizer, and the end extends above the crystallizer to ensure that the airflow covers the dust diffusion area and guides the airflow along the guide pipe into the air outlet body, where it is then captured by the dust collector hood. An arc-shaped guide plate 2 is installed at the bend of the guide pipe 1. The arc-shaped guide plate 2 is fixedly connected to the guide pipe 1 as a whole, which can perform directional pressurization and reduce eddies, thereby increasing the air volume in the section from the tundish to the crystallizer, allowing the dust to quickly enter the dust collection system and greatly improving the capture efficiency.

[0036] As shown in Figures 1 and 2, the reinforcing triangular body 4 is set at the bottom of the air outlet body 3 to fix and connect the air guide duct 1 and the dust collector hood 5, forming an integral rigid connection structure and improving structural stability.

[0037] In this embodiment, as shown in Figure 2, the air outlet body 3 has a wedge-shaped cross-section, welded from steel plates. The cross-section of the air outlet body gradually changes from narrow to wide, with the end connected to the air duct having the smallest cross-sectional area and the end furthest from the air duct having the largest cross-sectional area, facing the workshop air duct. This reduces airflow vortices at the workshop air duct, enhances the air concentration effect, expands the dust collection range, and effectively prevents dust overflow, thus improving the dust collection effect. The length of the air outlet body 3 matches the lateral width of the dust collector hood 5 to achieve uniform airflow coverage and maintain stable capture speed.

[0038] In this embodiment, as shown in Figures 1 and 2, the air duct 1 is made of rectangular steel pipe. The air duct 1 includes a straight connecting section and an inclined extension section. The arc-shaped guide plate 2 is set at the connection between the straight connecting section and the inclined extension section, which can reduce the eddy currents at the airflow turning point. The end of the straight connecting section is welded to the air outlet body 3. The extension direction of the inclined extension section is parallel to the steel pouring path from the tundish to the crystallizer. The width of the end of the inclined extension section is increased and it is located above the crystallizer, which can ensure that the airflow better covers the smoke and dust diffusion area.

[0039] With the above structure, the air duct achieves directional pressurization through the arc-shaped guide plate set at the bend, which can effectively increase the air volume from the tundish to the crystallizer section, allowing the smoke and dust to quickly enter the dust removal system and improving the collection efficiency by more than 30%.

[0040] In this embodiment, as shown in Figures 1 and 2, the reinforcing triangle 4 is a steel plate with an isosceles triangular cross section. The base of the reinforcing triangle 4 is welded to the bottom of the air outlet body 3, and the two waist sides are welded to the side walls of the dust collector 5, thereby forming a stable and supportive whole, which can enhance the resistance to vibration and high temperature deformation and extend the service life of the dust collector.

[0041] The air duct, arc-shaped guide plate, air outlet body, and reinforcing triangular body are all made of high-temperature resistant steel plate, with an anti-oxidation coating sprayed on the surface. The thickness of the anti-oxidation coating is 0.5-1.2mm, and the temperature resistance is not lower than 800℃.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it. Those skilled in the art should understand that this utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dust collector outlet structure for a ladle pouring station, characterized in that, include: The air duct is laid along the surface of the dust collector cover, with one end connected to the air outlet body and the other end extending to the top of the crystallizer to guide the airflow in a directional manner. The air outlet body is connected to the air duct and has a wedge-shaped cross-section. The cross-sectional area gradually increases from the end connected to the air duct to the far end. A reinforcing triangular body is set at the bottom of the air outlet body and is fixedly connected to the side wall of the dust collector hood on both sides to form an integral rigid support structure.

2. The dust collector outlet structure of the ladle turning station as described in claim 1, characterized in that, The cross-section of the air duct is rectangular.

3. The dust collector outlet structure of the ladle turning station as described in claim 1, characterized in that, The air duct is welded and fixed to the air outlet body.

4. The dust collector outlet structure of the ladle turning station as described in claim 1, characterized in that, An arc-shaped guide plate is fixed at the bend of the air duct to provide directional pressurization and reduce eddies.

5. The dust collector outlet structure of the ladle turning station as described in claim 1, characterized in that, The extension direction of the air duct is parallel to the molten steel pouring path from the tundish to the crystallizer.

6. The dust collector outlet structure of the ladle turning station as described in claim 1, characterized in that, The width of the air duct is increased at the end closest to the crystallizer.

7. The dust collector outlet structure of the ladle turning station as described in claim 1, characterized in that, The length of the air outlet body matches the lateral width of the dust collector hood.

8. The dust collector outlet structure of the ladle turning station as described in claim 1, characterized in that, The reinforcing triangle is a steel plate with an isosceles triangle cross-section. The base of the reinforcing triangle is welded to the bottom of the air outlet body, and the two waist sides are welded to the side wall of the dust collector cover to form a stable support.

9. The dust collector outlet structure of the ladle turning station as described in claim 1, characterized in that, The air duct, air outlet body, and reinforcing triangular body are all made of high-temperature resistant steel plate, and the surface is coated with an anti-oxidation coating.

10. The dust collector outlet structure of the ladle turning station as described in claim 9, characterized in that, The thickness of the anti-oxidation coating is 0.5-1.2 mm, and the temperature resistance is not lower than 800℃.

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