A lance slag stopper

Abstract

The application relates to a slag blocking device for a spray gun. The slag blocking device comprises a first slag blocking plate, a second slag blocking plate arranged on the axial side of the first slag blocking plate, and a connecting piece arranged between the first slag blocking plate and the second slag blocking plate. The side, away from the first slag blocking plate, of the second slag blocking plate is provided with a fixing plate, and a reinforcing rib is arranged between the first slag blocking plate and the second slag blocking plate. The application disperses the stress concentration area by arranging the reinforcing rib, enhances the overall rigidity of the structure, enhances the bending resistance and deformation resistance of the slag blocking plate, and can effectively maintain the structural integrity when high temperature, impact or pressure is borne, so that the phenomenon of jamming and falling of the slag blocking plate due to extrusion deformation is avoided, and the working radius of the spray gun is ensured to be unchanged.

Description

Technical Field

[0001] This application relates to the field of metallurgical technology, and in particular to a spray gun slag-blocking device. Background Technology

[0002] In the smelting process of metallurgical furnaces (such as converters, electric furnaces, and flash furnaces), the lance, as a core operating device, functions by injecting media such as oxygen, fuel, and flux to drive oxidation-reduction reactions, regulate furnace temperature, and promote the separation of metal and slag. To prevent high-temperature slag from overflowing or splashing through the furnace opening during smelting, traditional technology typically installs a slag baffle at the connection between the lance head and the furnace opening. This slag baffle is fixed by a mechanical structure, forming a physical barrier to prevent slag from entering the lance's operating area and protecting the equipment.

[0003] However, under high temperature, high pressure and slag impact conditions, the slag baffle is easily squeezed and deformed, causing it to jam or fall off, thus affecting the working radius of the spray gun. Utility Model Content

[0004] To solve or partially solve the problems existing in the related technologies, this application provides a spray gun slag blocking device.

[0005] To achieve the above objectives, this application employs the following technical solution: A spray gun slag-blocking device includes a gun barrel, and the spray gun slag-blocking device further includes: First slag baffle plate; A second slag baffle is located on one axial side of the first slag baffle; A connecting component located between the first slag baffle plate and the second slag baffle plate; The second slag baffle plate has a fixing plate on the side away from the first slag baffle plate, and a reinforcing rib is provided between the first slag baffle plate and the second slag baffle plate.

[0006] Optionally, the reinforcing ribs are rectangular block structures, arranged in an array along the circumference between the first slag baffle and the second slag baffle.

[0007] Optionally, the reinforcing ribs are triangular in structure and are arranged in an array along the circumferential direction between the first slag baffle plate and the second slag baffle plate.

[0008] Optionally, the tips of the adjacent triangular reinforcing ribs point in alternating directions.

[0009] Optionally, the reinforcing ribs are in a wave-like structure and are arranged around the first slag baffle plate and the second slag baffle plate.

[0010] Optionally, the first slag baffle, the second slag baffle, the connector, the fixing plate, and the reinforcing rib are made of iron-nickel-based high-temperature alloy materials.

[0011] Optionally, the axes of the first baffle plate, the second baffle plate, and the gun barrel are aligned.

[0012] The beneficial effects of this application are as follows: The first and second slag baffles are welded and fixed to the outer wall of the gun barrel. One end of the connector is welded to the first slag baffle and the other end is welded to the second slag baffle, so that the two form an integral structure, thereby enhancing the structural strength and rigidity. The fixing plate is welded to the outer wall of the gun barrel and the first slag baffle respectively. The addition of the fixing plate enhances the connection stability of the first slag baffle. The reinforcing rib is located on the outside of the connector 4, and its two ends are welded to the first and second slag baffles respectively. By setting the reinforcing rib, the stress concentration area is dispersed, the overall rigidity of the structure is enhanced, and the bending and deformation resistance of the slag baffle is enhanced. Especially when subjected to high temperature, impact or pressure, it can effectively maintain the structural integrity, thereby avoiding the slag baffle from being squeezed and deformed and getting stuck or falling off, thus ensuring that the working radius of the spray gun does not change.

[0013] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0014] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0015] Figure 1 This is a schematic diagram of the structure of the spray gun slag-blocking device shown in Embodiment 1 of this application; Figure 2 This is another structural schematic diagram of the spray gun slag-blocking device shown in Embodiment 3 of this application; Figure 3 This is a schematic diagram of the spray gun slag-blocking device shown in Embodiment 4 of this application.

[0016] Reference numerals: 1. Gun barrel; 2. First baffle plate; 3. Second baffle plate; 4. Connector; 5. Fixing plate; 6. Reinforcing rib. Detailed Implementation

[0017] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0019] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application as appropriate to the specific circumstances.

[0020] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0022] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

[0023] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0024] To make the objectives, technical solutions, and beneficial effects of this application clearer, the preferred embodiments of this application will be described in detail below with reference to the accompanying drawings, so as to facilitate understanding by those skilled in the art.

[0025] Example 1: See Figure 1 A spray gun slag-blocking device includes a gun barrel 1, and the spray gun slag-blocking device further includes: First slag baffle plate 2; A second slag baffle 3 is disposed on one side of the axial direction of the first slag baffle 2; A connecting piece 4 is provided between the first slag baffle plate 2 and the second slag baffle plate 3; The second slag baffle 3 has a fixing plate 5 on the side away from the first slag baffle 2, and a reinforcing rib 6 is provided between the first slag baffle 2 and the second slag baffle 3.

[0026] Specifically, the first baffle plate 2 and the second baffle plate 3 are both welded and fixed to the outer wall of the gun barrel 1. One end of the connector 4 is welded to the first baffle plate 2 and the other end is welded to the second baffle plate 3, so that the two form an integral structure, thereby enhancing the structural strength and rigidity. The fixing plate 5 is welded to the outer wall of the gun barrel 1 and the first baffle plate 2 respectively. The addition of the fixing plate 5 enhances the connection stability of the first baffle plate 2. The reinforcing rib 6 is located on the outside of the connector 4, and its two ends are welded to the first baffle plate 2 and the second baffle plate 3 respectively. By setting the reinforcing rib 6, the stress concentration area is dispersed, the overall rigidity of the structure is enhanced, and the bending and deformation resistance of the baffle plate is enhanced. Especially when subjected to high temperature, impact or pressure, it can effectively maintain the structural integrity, thereby avoiding the baffle plate from being squeezed and deformed, causing jamming or falling off, and thus ensuring that the working radius of the spray gun does not change.

[0027] Example 2: See Figure 1 Based on Embodiment 1, optionally, the reinforcing rib 6 is a rectangular block structure, and is arrayed along the circumferential direction between the first slag baffle plate 2 and the second slag baffle plate 3.

[0028] Specifically, the reinforcing rib 6 has a rectangular block structure and is provided in a plurality of such ribs. The plurality of rectangular block reinforcing ribs are arranged in an array along the circumferential direction between the first slag baffle plate 2 and the second slag baffle plate 3. The rectangular block structure itself has stable mechanical support characteristics. The multiple reinforcing ribs work together in a circumferential array, which can significantly improve the overall bending and deformation resistance of the slag baffle plate. In particular, it can effectively maintain the structural shape when subjected to radial pressure or impact. The rectangular block structure is easy to process, has easy dimensional accuracy control, and is easy to weld.

[0029] Example 3: See Figure 2 Based on the above embodiments, optionally, the reinforcing rib 6 is in the form of a triangular structure and is arranged in an array along the circumferential direction between the first slag baffle plate 2 and the second slag baffle plate 3.

[0030] Specifically, compared to rectangular block stiffeners, triangular stiffeners offer increased stability, are less prone to deformation under pressure, provide more reliable support for the baffle plate, and maintain structural stability. The triangular shape distributes external forces evenly across all sides, offering better relief for localized stress concentrations than rectangular block structures. This effectively alleviates stress concentration problems, reduces the risk of cracking or damage due to stress overload, and improves overall fatigue resistance. Furthermore, compared to rectangular block stiffeners, triangular stiffeners require less material to achieve the same support strength, reducing the overall weight of the device and lowering material costs. Rectangular block stiffeners, on the other hand, typically consume more material because they require a larger cross-sectional area.

[0031] Optionally, the tips of the adjacent triangular reinforcing ribs point in alternating directions.

[0032] Specifically, traditionally aligned triangular stiffeners offer strong support in a single direction but are less resistant to reverse or oblique stresses. Alternating pointing directions allow stress to be evenly distributed circumferentially, enhancing the structure's adaptability to multi-directional loads (such as radial pressure and circumferential torque) and preventing localized stress concentration. The alternating pointing of the tips of adjacent triangular stiffeners creates an "interlocking" spatial structure, significantly improving the overall torsional stiffness of the baffle plate. This staggered layout effectively suppresses localized deformation caused by torque or vibration, maintaining the geometric stability of the annular structure. The alternating tips alter the structure's natural frequency, preventing resonance at specific frequencies. Simultaneously, multi-directional support more effectively absorbs vibration energy, reducing the risk of fatigue cracks caused by cyclic loads. The alternating tip layout allows for a denser arrangement of triangular stiffeners circumferentially, providing more concentrated support points within a limited space while preventing direct collisions or overlaps between the tips of adjacent stiffeners, balancing strength and space efficiency.

[0033] Example 4: See Figure 3 Based on the above embodiments, optionally, the reinforcing rib 6 has a wave-like structure and is arranged around the first slag baffle plate 2 and the second slag baffle plate 3.

[0034] Specifically, the waveform structure, through continuous surface changes, can transmit and disperse external forces (such as molten slag impact and thermal expansion stress) along the waveform to a larger area, avoiding the problem of local stress concentration at the tip of the triangular structure; under high temperature or impact load, the waveform stiffeners can absorb energy through small elastic deformation, reducing the risk of structural cracking.

[0035] Optionally, the first slag baffle 2, the second slag baffle 3, the connector 4, the fixing plate 5, and the reinforcing rib 6 are made of iron-nickel-based high-temperature alloy materials.

[0036] Specifically, iron-nickel-based superalloy materials possess excellent high-temperature strength and creep resistance, effectively supporting the structural stability of the slag baffle plate under the impact of high-temperature molten slag and preventing plastic deformation or fracture caused by long-term load. These materials also exhibit corrosion and oxidation resistance, extending the service life of the equipment. For temperatures exceeding 800℃ or extreme corrosive environments, nickel-based alloys (such as Inconel 625) can be upgraded to meet higher requirements.

[0037] Optionally, the axes of the first baffle plate 2, the second baffle plate 3, and the gun barrel 1 are aligned.

[0038] Specifically, the three axes coincide to form an axisymmetric structure, which makes the external forces such as high-temperature molten slag impact and pressure evenly distributed, avoids local stress concentration, and improves structural stability.

[0039] It should be noted that the structures and / or installation methods not detailed in this application are those that can be known by those skilled in the art in combination with common knowledge and / or prior art, and are not the focus of this application, and will not be elaborated further here.

[0040] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this application; the dimensions of the drawings are not related to the specific physical object, and the physical object dimensions can be arbitrarily changed.

Claims

1. A spray gun slag-blocking device, comprising a gun barrel (1), characterized in that, The spray gun slag-blocking device further includes: First slag baffle (2); A second slag baffle (3) is provided on one side of the axial direction of the first slag baffle (2); A connecting piece (4) is provided between the first slag baffle (2) and the second slag baffle (3); Among them, the second slag baffle (3) is provided with a fixing plate (5) on the side away from the first slag baffle (2), and a reinforcing rib (6) is provided between the first slag baffle (2) and the second slag baffle (3).

2. The spray gun slag-blocking device as described in claim 1, characterized in that, The reinforcing ribs (6) are rectangular block structures and are arranged in an array along the circumference between the first slag baffle (2) and the second slag baffle (3).

3. The spray gun slag-blocking device as described in claim 1, characterized in that, The reinforcing ribs (6) are triangular in structure and are arranged in an array along the circumference between the first slag baffle (2) and the second slag baffle (3).

4. The spray gun slag-blocking device as described in claim 3, characterized in that, The tips of adjacent triangular reinforcing ribs point in alternating directions.

5. The spray gun slag-blocking device as described in claim 1, characterized in that, The reinforcing rib (6) has a wave-like structure and is arranged around the first slag baffle (2) and the second slag baffle (3).

6. The spray gun slag-blocking device as described in claim 1, characterized in that, The first slag baffle (2), the second slag baffle (3), the connector (4), the fixing plate (5) and the reinforcing rib (6) are made of iron-nickel-based high-temperature alloy material.

7. The spray gun slag-blocking device as described in claim 1, characterized in that, The axes of the first baffle plate (2), the second baffle plate (3), and the gun barrel (1) are coincident.

Images