Spraying system for surface treatment of continuous casting sheet billet

Abstract

The utility model discloses a spraying system for continuous casting slab surface treatment, which comprises a supply source, a main pipe fitting and a spraying piece, the spraying piece comprises a plurality of first spraying groups and a plurality of second spraying groups, and the first spraying groups and the second spraying groups are sequentially and alternately arranged at intervals along the length direction of a slab. The spraying nozzles in the first spraying group and the second spraying group are arranged in a staggered manner in the width direction of the plate blank, so that the spraying uniformity is further enhanced, the staggered spraying nozzle layout enables the spraying liquid to be more densely distributed in the width direction of the plate blank, the spraying liquid sprayed by the adjacent spraying nozzles is mutually supplemented, the gap between the spraying liquid is reduced, and the spraying efficiency is improved. Due to the staggered arrangement of the spray nozzles and the uniform distribution effect of the shunting channels, the spray liquid can be uniformly sprayed on the surface of the plate blank, so that the treatment degrees of all parts of the surface of the plate blank are consistent, the problems of supercooling of the surface of the casting blank and cooling bending of the plate blank caused by accumulation of cooling water on the surface of the plate blank are avoided, and the production reliability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of continuous casting steelmaking, and particularly relates to a spraying system for surface treatment of a continuous casting slab. BACKGROUND

[0002] The hot charging technology in the technical field of steelmaking continuous casting is an important technology for improving the efficiency of the interface between steelmaking and rolling, reducing the slab heating time and energy consumption, reducing enterprise costs, and realizing a low-carbon steel industry. However, in the hot charging process, a large amount of precipitates are precipitated on the surface layer of the micro-alloyed steel slab, which can easily cause red charging cracks. In order to suppress the red charging crack problem on the surface of the micro-alloy, enterprises at home and abroad have developed slab surface rapid cooling technology to refine the surface layer structure, suppress the precipitation of precipitates, and improve the strength of the slab surface.

[0003] The continuous casting fan-shaped segment slab rapid cooling technology is to rapidly cool the slab at the outlet of the fan-shaped segment. At this time, the surface temperature of the slab is relatively high, and the precipitates have not been precipitated in large quantities. It is the best opportunity to suppress the red charging crack by rapidly cooling the slab. When the slab surface is rapidly cooled in the fan-shaped segment, the slab bending phenomenon is prone to occur. It is difficult to find the bending problem of the slab under the clamping of the continuous casting roller. The bent slab affects the subsequent cutting processing, and even causes production accidents. Therefore, the problem must be avoided.

[0004] At present, in the cooling means of the slab, the uniformity of the cooling process of the slab is poor, and the accumulation of cooling water on the surface of the slab causes the surface of the slab to be supercooled, which leads to the cooling bending problem of the slab. CONTENT OF THE UTILITY MODEL

[0005] In view of the defects in the prior art, the present application provides a spraying system for surface treatment of a continuous casting slab to solve the problem that the accumulation of cooling water on the surface of the slab in the prior art affects production.

[0006] The above-mentioned purpose of the present application is mainly realized by the following technical scheme:

[0007] A spraying system for surface treatment of a continuous casting slab, the spraying system comprising:

[0008] a supply source for providing spraying liquid;

[0009] a main pipe provided with a shunt channel inside, and the main pipe is used for connecting to the input port of the supply source, so that the spraying liquid enters the shunt channel;

[0010] The spray piece comprises a plurality of first spray groups and a plurality of second spray groups, the first spray groups and the second spray groups are arranged in sequence and alternately along the length direction of the slab, the first spray groups and the second spray groups respectively comprise a plurality of spray nozzles arranged in the width direction of the slab, the spray nozzles of the first spray groups and the spray nozzles of the second spray groups are staggered arranged in the width direction of the slab, one end of each spray nozzle is communicated to the shunt channel, and the other end is used for spraying the spray liquid towards the slab.

[0011] In an optional embodiment, the spray nozzles in the first spray groups and the spray nozzles in the second spray groups are respectively arranged symmetrically with respect to the center line extending in the length direction of the slab.

[0012] In an optional embodiment, the number of the spray nozzles in the first spray groups is odd, the first spray groups comprise a middle spray nozzle arranged on the middle part of the slab and a plurality of outwardly expanded spray nozzles arranged on both sides of the middle spray nozzle.

[0013] In an optional embodiment, the number of the spray nozzles in the second spray groups is even, the second spray groups comprise two middle spray nozzles arranged on the middle part of the slab and a plurality of outwardly expanded spray nozzles arranged on both sides of the middle spray nozzles.

[0014] In an optional embodiment, the end of the spray nozzle is provided with a connecting port and a spray outlet, the connecting port is communicated to the shunt channel, and the spray outlet is arranged towards the slab.

[0015] In an optional embodiment, the difference between the number of the spray nozzles in the first spray groups and the number of the spray nozzles in the second spray groups is 1.

[0016] In an optional embodiment, the distance between the middle spray nozzle and the slab is smaller than the distance between the outwardly expanded spray nozzle and the slab.

[0017] In an optional embodiment, the middle spray nozzle is provided with an annular wall which is outwardly expanded in a ring shape, and the outwardly expanded spray nozzle is provided with a first guide plane and a second guide plane which are oppositely arranged.

[0018] In an optional embodiment, the annular wall forms an included angle α, the first guide plane and the vertical direction form an included angle γ, and the second guide plane and the vertical direction form an included angle β, and the following condition formula is satisfied:

[0019] Wherein, W is the width of the slab, H1 is the distance between the central spray nozzle and the slab, H2 is the distance between the outer spray nozzle and the slab, and k is the number of the outer spray nozzles.

[0020] In an optional embodiment, the ratio of the flow rate at the central spray nozzle to the flow rate at the outward-expanding spray nozzle is equal to the ratio of α to γ.

[0021] Compared with the prior art, the advantages of this application are:

[0022] The spraying system described in this application is applied to the surface treatment of continuously cast slabs. The spraying system includes a supply source, a main pipe, and spraying components. The supply source provides spraying liquid. The main pipe has a diversion channel inside and is connected to the input port of the supply source so that the spraying liquid enters the diversion channel. The spraying components include multiple first spray groups and multiple second spray groups. The first spray groups and the second spray groups are arranged alternately along the length direction of the slab. The first spray groups and the second spray groups each include multiple spray nozzles arranged at intervals along the width direction of the slab. The spray nozzles of the first spray groups and the spray nozzles of the second spray groups are staggered in the width direction of the slab. One end of each spray nozzle is connected to the diversion channel, and the other end is used to spray the spraying liquid toward the slab.

[0023] The distribution channel evenly distributes the spray liquid output from the supply source to each spray group. This avoids situations where the spray liquid flow rate is too high or too low in certain areas. During the surface treatment of continuously cast slabs, uneven distribution of the spray liquid may lead to excessive spray liquid accumulation in some areas of the slab surface, affecting surface quality; while insufficient spray liquid in other areas may fail to achieve the expected treatment effect.

[0024] The first and second spray groups are arranged alternately along the length of the slab, achieving complete coverage of the slab surface. The spray liquid can be sprayed continuously on the slab without any missed areas. Simultaneously, the spray nozzles in the first and second spray groups are staggered along the width of the slab, further enhancing the uniformity of the spray. This staggered nozzle layout makes the distribution of spray liquid more dense along the width of the slab, with adjacent nozzles supplementing each other and reducing gaps between spray liquids. Due to the staggered arrangement of the nozzles and the uniform distribution effect of the distribution channels, the spray liquid can be evenly sprayed onto the slab surface, ensuring consistent treatment across the slab surface. This prevents the accumulation of cooling water on the slab surface, avoiding overcooling and slab bending during cooling, thus improving production reliability. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a top view of the sprinkler system provided in an embodiment of this application;

[0027] Figure 2 This is a side view of the sprinkler system provided in an embodiment of this application;

[0028] Figure 3 A cross-sectional view of the outwardly expanding spray nozzle provided in an embodiment of this application;

[0029] In the figure: 101, first spray group; 102, second spray group; 200, spray nozzle; 300, slab; 401, central spray nozzle; 501, outwardly expanding spray nozzle; 502, first guide plane; 503, second guide plane. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is intended to aid in understanding the present invention, but does not constitute a limitation thereof. The specific structural and functional details disclosed herein are only for describing exemplary embodiments of the present invention. However, the present invention may be embodied in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0031] like Figure 1 , Figure 2 As shown, Figure 1 This is a top view of the sprinkler system provided in an embodiment of this application. Figure 2 This is a side view schematic diagram of a spraying system provided in an embodiment of this application; a spraying system for surface treatment of continuously cast slab 300, the spraying system including a supply source, a main pipe and spraying components, wherein:

[0032] The supply source provides a continuous supply of spraying fluid, which is typically carefully formulated to meet various process requirements for the surface treatment of continuously cast slabs (300mm), such as oxide scale removal and cooling. The supply source, through its internal pumping device, outputs the spraying fluid at a specific pressure and flow rate, providing sufficient power support for the subsequent spraying process.

[0033] The main pipe has a diversion channel inside, and the main pipe is used to connect to the input port of the supply source so that the spray liquid enters the diversion channel;

[0034] The main main component has internal distribution channels that evenly distribute the spray liquid from the supply source to each spray group. One end of the main main component is tightly connected to the inlet of the supply source, ensuring that the spray liquid can smoothly enter the distribution channels. The spray liquid is properly distributed before entering the spray components, laying a solid foundation for achieving uniform spraying.

[0035] like Figure 1 , Figure 2 As shown, the spraying component includes multiple first spray groups 101 and multiple second spray groups 102. The first spray groups 101 and the second spray groups 102 are arranged alternately along the length direction of the slab 300. The first spray groups 101 and the second spray groups 102 each include multiple spray nozzles 200 arranged at intervals along the width direction of the slab 300. The spray nozzles 200 of the first spray group 101 and the spray nozzles 200 of the second spray group 102 are staggered in the width direction of the slab 300. One end of each spray nozzle 200 is connected to the diversion channel, and the other end is used to spray the spray liquid toward the slab 300.

[0036] like Figure 1 , Figure 2 As shown, multiple first spray groups 101 and multiple second spray groups 102 are arranged alternately along the length of the slab 300, so that the spray liquid can be sprayed continuously along the entire length of the slab 300 without any missed areas, thereby achieving full coverage of the surface of the slab 300.

[0037] Each spray group includes multiple spray nozzles 200, which are arranged at intervals along the width direction of the slab 300. The spray nozzles 200 of the first spray group 101 and the spray nozzles 200 of the second spray group 102 are staggered in the width direction of the slab 300, which further enhances the uniformity of spraying.

[0038] One end of each spray nozzle 200 is connected to a distribution channel inside the main component, allowing the spraying liquid to flow smoothly into the nozzle 200 from the distribution channel. The other end of the spray nozzle 200 faces the continuously cast slab 300. After the spraying liquid enters the nozzle 200, it is sprayed onto the surface of the slab 300 at a certain speed and angle, completing the cleaning and cooling of the slab 300 surface, thereby improving the quality of the slab 300 and its subsequent processing performance.

[0039] In an optional embodiment, the spraying system of this application is applied to the surface treatment operation of a continuously cast slab 300. The working principle of the spraying system is as follows: the spraying system includes a supply source, a main pipe, and spraying components. The supply source is used to provide spraying liquid. The main pipe has a diversion channel inside and is used to connect to the input port of the supply source so that the spraying liquid enters the diversion channel. The spraying components include multiple first spray groups 101 and multiple second spray groups 102. The first spray groups 101 and the second spray groups 102 are connected... Spray groups 102 are arranged alternately along the length of the slab 300. The first spray group 101 and the second spray group 102 each include a plurality of spray nozzles 200 arranged at intervals along the width of the slab 300. The spray nozzles 200 of the first spray group 101 and the spray nozzles 200 of the second spray group 102 are staggered in the width of the slab 300. One end of each spray nozzle 200 is connected to the diversion channel, and the other end is used to spray the spray liquid toward the slab 300.

[0040] The distribution channel evenly distributes the spray liquid output from the supply source to each spray group. This avoids situations where the local flow rate of the spray liquid is too high or too low. During the surface treatment of the continuously cast slab 300, if the spray liquid is not distributed evenly, it may cause excessive spray liquid in some areas of the slab 300 surface, resulting in accumulation and affecting the surface quality; while other areas may have insufficient spray liquid, failing to achieve the expected treatment effect.

[0041] The first spray group 101 and the second spray group 102 are arranged alternately along the length of the slab 300 to achieve complete coverage of the slab surface. The spray liquid can be continuously sprayed on the slab 300 without any missed areas. Simultaneously, the spray nozzles 200 in the first spray group 101 and the second spray group 102 are staggered along the width of the slab 300, further enhancing the uniformity of the spray. The staggered nozzle layout makes the distribution of the spray liquid more dense along the width of the slab 300, with the spray liquid from adjacent nozzles 200 complementing each other and reducing the gaps between spray liquids. Due to the staggered arrangement of the nozzles 200 and the uniform distribution effect of the distribution channels, the spray liquid can be evenly sprayed on the surface of the slab 300, ensuring consistent treatment across the surface. This prevents the accumulation of cooling water on the slab surface, avoiding overcooling and slab bending during cooling, thus improving production reliability.

[0042] The spraying liquid can be evenly sprayed onto the surface of the slab 300, which is crucial for the surface treatment of the continuously cast slab 300. For example, in processes such as removing oxide scale from the surface of the slab 300 and cooling, uniform spraying can ensure that the treatment degree is consistent throughout the surface of the slab 300.

[0043] Taking the cooling process as an example, if the spraying is uneven, the surface temperature of the slab 300 will drop inconsistently, which may cause thermal stress inside the slab 300 and affect its quality. This spraying system can make the surface temperature of the slab 300 drop evenly, reduce the generation of thermal stress, and improve the quality of the slab 300.

[0044] The spraying system can be adjusted according to different dimensions and surface treatment requirements of the continuously cast slab 300. Since the spraying components include multiple spraying groups and the spray nozzles 200 are arranged at intervals along the width direction of the slab 300, when processing slabs 300 of different widths, the appropriate spraying groups can be selected and the working state of the spray nozzles 200 can be adjusted to adapt to slabs 300 of different sizes.

[0045] like Figure 1 , Figure 2 As shown, in an optional embodiment, the spray nozzles 200 in the first spray group 101 and the spray nozzles 200 in the second spray group 102 are arranged symmetrically about the center line extending in the length direction of the slab 300.

[0046] The spray nozzles 200 in the first spray group 101 and the second spray group 102 are arranged symmetrically, with each nozzle 200 positioned symmetrically along the centerline extending along the length of the slab 300. This ensures a more even distribution of the spray liquid on the surface of the slab 300. When the spray liquid is sprayed from the nozzles 200, the liquid on both sides forms a mirror image around the centerline, creating a uniform spray area on the surface of the slab 300. For example, if the central area of ​​the slab 300 requires intensive treatment, this symmetrical arrangement of the nozzles 200 ensures that both sides of the central area receive the same level of spraying, avoiding surface quality differences caused by uneven spraying.

[0047] like Figure 1 , Figure 2 As shown, in an optional embodiment, the number of spray nozzles 200 in the first spray group 101 is odd. The first spray group 101 includes a central spray nozzle 401 arranged on the middle of the slab 300, and a plurality of outwardly expanding spray nozzles 501 arranged on both sides of the central spray nozzle 401.

[0048] The number of spray nozzles 200 in the first spray group 101 is odd. This allows the first spray group 101 to include a central spray nozzle 401 located in the middle of the slab 300. This central spray nozzle 401 directly sprays the central area of ​​the slab 300. Simultaneously, multiple outward-expanding spray nozzles 501 are arranged on both sides of the central spray nozzle 401. These outward-expanding spray nozzles 501 extend outwards along the width direction of the slab 300, gradually covering the edge area of ​​the slab 300. This odd-numbered nozzle arrangement achieves complete coverage from the center to the edge of the slab 300, and the presence of the central spray nozzle 401 ensures that the central area of ​​the slab 300 receives sufficient spraying treatment.

[0049] like Figure 1 , Figure 2 As shown, in an optional embodiment, the number of spray nozzles 200 in the second spray group 102 is even. The second spray group 102 includes two central spray nozzles 401 arranged on the middle of the slab 300, and a plurality of outwardly expanding spray nozzles 501 arranged on both sides of the central spray nozzles 401.

[0050] The second spray group 102 has an even number of spray nozzles 200. Unlike the first spray group 101, the second spray group 102 includes two central spray nozzles 401 arranged in the middle of the slab 300. These two central spray nozzles 401 can simultaneously spray the central area of ​​the slab 300, enhancing the treatment intensity of the central area. Moreover, on both sides of these two central spray nozzles 401, multiple outward-expanding spray nozzles 501 are also arranged. These outward-expanding spray nozzles 501 also extend outward along the width direction of the slab 300, cooperating with the outward-expanding spray nozzles 501 of the first spray group 101 to form a denser spray network. The even number of spray nozzles 200 allows the second spray group 102 to more flexibly adjust the distribution of the spray liquid during the spraying process to adapt to different surface treatment requirements.

[0051] In an optional embodiment, the end of the spray nozzle 200 is provided with a connection port and a spray outlet, the connection port being connected to the diversion channel, and the spray outlet being arranged toward the slab 300.

[0052] The connection port leads to the distribution channel inside the main component. Through the connection port, the spray liquid can flow smoothly from the distribution channel into the spray nozzle 200. The spray outlet is the channel through which the spray liquid is finally sprayed onto the slab 300, allowing the spray liquid to be accurately sprayed onto the surface of the slab 300.

[0053] like Figure 1 , Figure 2As shown, in an optional embodiment, the difference between the number of spray nozzles 200 in the first spray group 101 and the number of spray nozzles 200 in the second spray group 102 is 1.

[0054] The difference between the number of spray nozzles 200 in the first spray group 101 and the number of spray nozzles 200 in the second spray group 102 is 1. This difference in quantity allows the two spray groups to complement each other during the spraying process. When the odd number of spray nozzles 200 in the first spray group 101 sprays the slab 300, the even number of spray nozzles 200 in the second spray group 102 can fill the gaps between the spray liquids in the first spray group 101, further improving the uniformity of the spraying. Furthermore, it facilitates the flexible selection and adjustment of the working state of the spray groups in actual production according to the size and surface treatment requirements of the slab 300, in order to achieve the best spraying effect.

[0055] like Figure 1 , Figure 2 As shown, in an optional embodiment, the distance between the central spray nozzle 401 and the slab 300 is less than the distance between the outwardly expanding spray nozzle 501 and the slab 300.

[0056] The distance between the central spray nozzle 401 and the slab 300 is smaller than the distance between the outer spray nozzle 501 and the slab 300. Since the central spray nozzle 401 is located in the central area of ​​the slab 300, its spray liquid needs to directly act on the core part of the slab 300. Therefore, the closer distance increases the impact force of the spray liquid. On the other hand, the outer spray nozzle 501 needs to cover the edge area of ​​the slab 300, and the relatively greater distance ensures that the spray liquid has a certain diffusion range, achieving sufficient spray treatment. This results in uniform and efficient treatment of the entire surface of the slab 300.

[0057] like Figure 2 , Figure 3 As shown, Figure 3 This is a cross-sectional view of the outward-expanding spray nozzle 501 provided in an embodiment of this application. In an optional embodiment, the central spray nozzle 401 is provided with an annular outward-expanding annular wall, and the outward-expanding spray nozzle 501 is provided with a first guide plane 502 and a second guide plane 503 arranged opposite to each other at an angle.

[0058] The central spray nozzle 401 has an annular wall that expands outwards, allowing the spray liquid to form an outwardly spreading annular spray area upon exiting the nozzle. As the spray liquid flows along the annular wall and exits from the nozzle 200, it evenly spreads to cover the central area of ​​the slab 300, ensuring thorough and uniform spraying treatment of the central region. This allows the spray liquid to impact the central surface of the slab area evenly at a specific angle and force, improving the treatment effect.

[0059] The interior of the outward-expanding spray nozzle 501 is provided with a first guide plane 502 and a second guide plane 503 arranged at an angle. This precisely guides the flow direction of the spray liquid. When the spray liquid enters the outward-expanding spray nozzle 501, it is acted upon by the first guide plane 502 and the second guide plane 503, thereby changing its flow direction and spraying it onto the slab 300 at a specific angle. This improves the spray coverage and effect on the edge areas.

[0060] like Figure 2 , Figure 3 As shown, in an optional embodiment, the included angle formed by the annular wall is α, the included angle between the first guide plane 502 and the vertical direction is γ, and the included angle between the second guide plane 503 and the vertical direction is β, satisfying the following condition formula:

[0061] Wherein, W is the width of the slab 300, H1 is the distance between the central spray nozzle 401 and the slab 300, H2 is the distance between the outward-expanding spray nozzle 501 and the slab 300, and k is the number of the outward-expanding spray nozzles 501.

[0062] In an optional embodiment, the included angle formed by the annular wall is α, which determines the diffusion range and intensity of the spray liquid when it is sprayed from the central spray nozzle 401. A smaller α value allows the spray liquid to be sprayed more concentratedly towards the center of the slab 300, which is suitable for situations where the central area is to be focused on strengthening; while a larger α value allows the spray liquid to diffuse more widely, covering a larger area around the central area, which is suitable for situations where the central area is large or requires uniform treatment.

[0063] The angle between the first guide plane 502 and the vertical direction is γ, and the angle between the second guide plane 503 and the vertical direction is β. These two angles γ and β together determine the spray direction and coverage area of ​​the spray liquid ejected from the outward-expanding spray nozzle 501.

[0064] The aforementioned conditional formula ensures that the spraying system can achieve the optimal spraying effect based on the specific dimensions and shape of the slab 300. The parameters involved in the conditional formula include the width W of the slab 300, the distance H1 between the central spray nozzle 401 and the slab 300, the distance H2 between the outer spray nozzles 501 and the slab 300, and the number k of the outer spray nozzles 501. These parameters are interrelated, and through precise calculation and design, the values ​​of α, γ, and β can be determined. For example, when the width W of the slab 300 is large, it may be necessary to appropriately increase the value of α to expand the spraying range of the central spray nozzle 401, while adjusting the values ​​of γ and β to allow the outer spray nozzles 501 to cover a more distant edge area; conversely, when the number k of the outer spray nozzles 501 is large, the values ​​of γ and β can be appropriately decreased to make the spraying area of ​​each outer spray nozzle 501 more concentrated, thereby improving the uniformity and efficiency of the spraying. Through this precise design and calculation, the spraying system can adapt to continuous casting slabs of different sizes and shapes, achieving efficient and uniform surface treatment.

[0065] In an optional embodiment, the ratio of the flow rate at the central spray nozzle 401 to the flow rate at the outward-expanding spray nozzle 501 is equal to the ratio of α to γ.

[0066] The flow rate at the central spray nozzle 401 is determined based on the processing requirements of the central area of ​​the slab 300. The included angle α directly affects the shape and coverage of this annular spray zone. When α is large, the diffusion range of the spray liquid is wider, requiring more spray liquid per unit time to maintain the spray intensity of this diffusion zone; therefore, the flow rate at the central spray nozzle 401 will increase accordingly. Conversely, when α is small, the diffusion range of the spray liquid is narrower, and the flow rate requirement will decrease.

[0067] The flow rate at the outward-expanding spray nozzle 501 is determined based on the processing requirements of the edge area of ​​the slab 300 and the tilt angle γ of the first guide plane 502. A larger γ value will cause the spray liquid to be sprayed in a more horizontal direction, covering a more distant edge area. This requires more spray liquid to ensure the spraying effect in the edge area, thus increasing the flow rate at the outward-expanding spray nozzle 501. Conversely, a smaller γ value will cause the spray liquid to be sprayed in a more vertical direction, covering a relatively smaller area, and the flow rate requirement will be reduced accordingly.

[0068] When the ratio of α to γ ​​increases, it means that the diffusion range of the central spray nozzle 401 is expanded relative to the coverage range of the outer spray nozzle 501. Correspondingly increasing the flow rate of the central spray nozzle 401 ensures that the spraying effect in the central and edge areas of the slab 300 remains consistent. Conversely, when the ratio of α to γ ​​decreases, reducing the flow rate of the central spray nozzle 401 and increasing the flow rate of the outer spray nozzle 501 allows the spray liquid to act more concentratedly on the edge area, improving the treatment effect in the edge area. This fully demonstrates the flexibility and precision of the spraying system in adapting to different surface treatment needs of the slab 300.

[0069] It should be understood that the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. Although the terms "first," "second," etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit, without departing from the scope of the exemplary embodiments of this utility model.

[0070] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0071] It should be understood that in the description of this utility model, the terms "upper," "vertical," "inner," "outer," etc., indicate the orientation or positional relationship when the disclosed product is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0072] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0073] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” “containing,” and / or “including” as used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, and do not exclude the presence or addition of one or more other features, quantities, steps, operations, units, components, and / or combinations thereof.

[0074] Specific details are provided in the following description to provide a complete understanding of the exemplary embodiments. However, those skilled in the art will understand that the exemplary embodiments can be implemented without these specific details. In other embodiments, well-known processes, structures, and techniques may be omitted in the depiction of non-essential details to avoid obscuring the exemplary embodiments.

[0075] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

[0076] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art.

Claims

1. A spraying system for surface treatment of continuously cast slabs, characterized in that, The spray system includes: Supply source, the supply source being used to provide spray liquid; The main pipe has a diversion channel inside, and the main pipe is used to connect to the input port of the supply source so that the spray liquid enters the diversion channel; A spraying device includes multiple first spray groups and multiple second spray groups. The first spray groups and the second spray groups are arranged alternately along the length direction of the slab. Each of the first spray groups and the second spray groups includes multiple spray nozzles arranged at intervals along the width direction of the slab. The spray nozzles of the first spray groups and the spray nozzles of the second spray groups are staggered in the width direction of the slab. One end of each spray nozzle is connected to the diversion channel, and the other end is used to spray the spray liquid toward the slab.

2. The spray system for surface treatment of continuously cast slabs as described in claim 1, characterized in that: The spray nozzles in the first spray group and the spray nozzles in the second spray group are arranged symmetrically with respect to the center line extending along the length direction of the slab.

3. The spray system for surface treatment of continuously cast slabs as described in claim 2, characterized in that: The number of spray nozzles in the first spray group is odd. The first spray group includes a central spray nozzle arranged on the middle of the slab and a plurality of outwardly expanding spray nozzles arranged on both sides of the central spray nozzle.

4. The spray system for surface treatment of continuously cast slabs as described in claim 3, characterized in that: The number of spray nozzles in the second spray group is even. The second spray group includes two central spray nozzles arranged on the middle of the slab, and a plurality of outward-expanding spray nozzles arranged on both sides of the central spray nozzles.

5. The spray system for surface treatment of continuously cast slabs as described in claim 4, characterized in that: The end of the spray nozzle is provided with a connection port and a spray outlet. The connection port is connected to the diversion channel, and the spray outlet is arranged facing the slab.

6. The spray system for surface treatment of continuously cast slabs as described in claim 4, characterized in that: The difference between the number of spray nozzles in the first spray group and the number of spray nozzles in the second spray group is 1.

7. The spray system for surface treatment of continuously cast slabs as described in claim 3 or 4, characterized in that: The distance between the central spray nozzle and the slab is less than the distance between the outer spray nozzle and the slab.

8. The spray system for surface treatment of continuously cast slabs as described in claim 3 or 4, characterized in that: The central spray nozzle has an annular wall that expands outward, and the expanded spray nozzle has a first guide plane and a second guide plane that are arranged opposite to each other at an angle.

9. The spray system for surface treatment of continuously cast slabs as described in claim 8 is characterized in that: The included angle formed by the annular wall is α, the included angle between the first guiding plane and the vertical direction is γ, and the included angle between the second guiding plane and the vertical direction is β, satisfying the following condition formula: Wherein, W is the width of the slab, H1 is the distance between the central spray nozzle and the slab, H2 is the distance between the outer spray nozzle and the slab, and k is the number of the outer spray nozzles.

10. The spray system for surface treatment of continuously cast slabs as described in claim 9, characterized in that: The ratio of the flow rate at the central spray nozzle to the flow rate at the outer spray nozzle is equal to the ratio of α to γ.

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