A roll ring cooling water nozzle

Abstract

This application discloses a roller ring cooling water nozzle for use in the field of hot rolling of bar stock. It includes a spray head and a connecting rod for connecting to a water pipe. The end face of the spray head facing the material is the working surface, which has spray holes that axially penetrate the spray head and the connecting rod to communicate with the water pipe. The working surface also has diffusion grooves located around the spray holes to allow cooling water to diffuse. The connecting rod is connected to the water pipe, and the cooling water flows along the spray holes, ultimately being sprayed onto the roller ring surface. The diffusion grooves on the outer periphery of the roller ring allow the cooling water to enter, reducing pressure and causing it to diffuse along the grooves under internal pressure, eventually being sprayed onto the roller ring surface. The diffusion grooves guide the cooling water during diffusion, expanding the spray coverage area and thus improving the cooling effect of the roller ring.

Description

Technical Field

[0001] This application relates to the field of hot rolling technology of bar stock, and in particular to a roller ring cooling water nozzle. Background Technology

[0002] In the hot rolling process of bar stock, the roll rings are the most critical wear parts, and their condition directly affects the production efficiency and surface quality of the bar stock. During hot rolling, heat is transferred to the roll rings, causing a decrease in their strength, thus requiring cooling. The cooling condition of the roll rings is the most important influencing factor in the hot rolling process. Inappropriate or insufficient cooling can directly lead to accelerated wear of the roll rings, severe surface cracking and peeling, or roll breakage. If the cooling effect of the roll rings is poor, surface defects will appear, resulting in quality problems such as scale, folds, and pitting on the surface of the rolled stock, directly affecting the appearance quality of the steel.

[0003] Existing cooling water nozzles have a small cooling surface area and a small water volume, resulting in poor cooling effect. During production, problems such as roller ring breakage or severe wear frequently occur.

[0004] Therefore, how to improve the cooling effect of the cooling water nozzle on the roller ring is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide a roller ring cooling water nozzle, which has a diffusion groove on the outer periphery of the spray hole to expand the cooling range of the cooling water, thereby improving the cooling effect of the roller ring.

[0006] To achieve the above objectives, this application provides a roller ring cooling water nozzle, including a spray head and a connecting rod for connecting to a water pipe. The end face of the spray head facing the material is the working surface. The working surface is provided with spray holes. The spray holes penetrate the spray head and the connecting rod axially to communicate with the water pipe. The working surface is also provided with a diffusion groove located on the outer periphery of the spray holes for spreading the cooling water.

[0007] In some embodiments, the bottom surface of the diffusion groove is an arc-shaped surface with a radius of curvature greater than that of the spray hole.

[0008] In some embodiments, the diffusion groove is provided along the diameter of the inscribed circle of the working surface, and the water spray hole is provided at the center of the inscribed circle of the working surface.

[0009] In some embodiments, the width of the diffusion groove gradually decreases from the middle to both ends.

[0010] In some embodiments, the diameter of the spray nozzle is greater than or equal to 8 mm.

[0011] In some embodiments, the spray head is hexagonal prism-shaped, and the spray head and the connecting rod are coaxially arranged, with the spray holes extending along the axis of the spray head and the connecting rod.

[0012] In some embodiments, the connecting rod is cylindrical and has external threads on its outer periphery for connecting to a water pipe.

[0013] The roller ring cooling water nozzle provided in this application includes a spray head and a connecting rod for connecting to a water pipe. The end face of the spray head facing the material is the working surface. The working surface is provided with spray holes. The spray holes penetrate the spray head and the connecting rod axially to communicate with the water pipe. The working surface is also provided with a diffusion groove located on the outer periphery of the spray holes for spreading the cooling water.

[0014] The connecting rod is connected to the water pipe, and the cooling water flows along the spray holes, eventually being sprayed onto the surface of the roller ring. A diffusion groove is provided on the outer circumference of the roller ring. When the cooling water enters the diffusion groove, the pressure decreases, and the cooling water diffuses along the diffusion groove under the action of internal pressure, eventually being sprayed onto the roller ring surface. The diffusion groove acts as a guide during the diffusion flow of the cooling water, expanding the spray coverage area and thus improving the cooling effect of the roller ring. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 A schematic diagram of a specific embodiment of the roller ring cooling water nozzle provided in this application;

[0017] Figure 2 for Figure 1 Front view of the cooling water nozzle of the middle roller ring;

[0018] Figure 3 for Figure 1 Side view of the cooling water nozzle of the middle roller ring.

[0019] in, Figures 1 to 3 The attached figures are labeled as follows:

[0020] Spray head 1, connecting rod 2, spray hole 11, diffuser 12. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Please refer to Figures 1 to 3 , Figure 1 A schematic diagram of a specific embodiment of the roller ring cooling water nozzle provided in this application; Figure 2 for Figure 1 Front view of the cooling water nozzle of the middle roller ring; Figure 3 for Figure 1 Side view of the cooling water nozzle of the middle roller ring.

[0024] The roller ring cooling water nozzle provided in this application has the following structure: Figure 1 As shown, the device includes a spray head 1 and a connecting rod 2. Both the spray head 1 and the connecting rod 2 are cylindrical and coaxially arranged. The spray head 1 and the connecting rod 2 can be integrally molded components, thereby improving the strength of the roller ring cooling water nozzle. The connecting rod 2 is used to connect to the water pipe, and the spray head 1 is located at the front end of the connecting rod 2. The end face of the spray head 1 facing the material is the working surface. The roller ring cooling water nozzle is provided with a spray hole 11, which passes through the spray head 1 and the connecting rod 2 along a direction parallel to the axis of the spray head 1. The spray hole 11 is connected to the water pipe, and the working surface is also provided with a diffusion groove 12 located on the outer periphery of the spray hole 11. After the cooling water flows out of the spray hole 11, it flows along the diffusion groove 12 and is finally sprayed onto the surface of the roller ring. After the cooling water enters the diffusion groove 12, the cross-sectional area increases and the pressure decreases, so the cooling water will diffuse and flow, thus forming a diffused spray surface. The diffusion groove 12 can increase the spray angle of the cooling water from 70° in the prior art to more than 90°, thereby increasing the spray range and improving the cooling effect of the roller ring.

[0025] In one specific embodiment of this application, the diffusion groove 12 is arranged along the diameter of the inscribed circle of the working surface, and the water spray hole 11 is located at the center of the inscribed circle of the working surface. The water spray hole 11 is located in the center of the diffusion groove 12, and when the cooling water diffuses in the diffusion groove 12, the diffusion range is symmetrically distributed about the water spray hole 11. Therefore, the area of ​​contact between the cooling water and the roller ring during the cooling process is also symmetrically distributed about the water spray hole 11. Construction personnel can set the position of the roller ring cooling water nozzles according to the spray range to ensure that the spray range of the roller ring cooling water nozzles can cover the roller ring, thereby ensuring the cooling effect of the roller ring.

[0026] In some embodiments, the diameter of the spray hole 11 can be selected from 8mm to 12mm. In one specific embodiment of this application, the diameter of the spray hole 11 is 8mm. Of course, the user can also set the diameter of the spray hole 11 as needed, which is not limited here. The diameter of the spray hole 11 is larger than the diameter of the cooling water nozzle in the prior art. Therefore, the cooling water flow through the roller ring cooling water nozzle in this application is larger, which can further improve the cooling effect.

[0027] In some embodiments, such as Figure 1 As shown, the bottom surface of the diffuser 12 is an arc-shaped surface, symmetrical about the diameter of the inscribed circle of the diffuser 12's extension direction. The arc-shaped surface ensures better flow of cooling water along the diffuser 12, preventing air bubbles from being trapped within it. If air bubbles are trapped in the diffuser 12, it will lead to uneven distribution of cooling water, affecting the cooling effect. In this application, the radius of curvature of the bottom surface of the diffuser 12 is larger than the radius of the spray hole 11. Because the radius of curvature of the bottom surface of the diffuser 12 is larger, the possibility of air bubbles being trapped in the diffuser 12 can be reduced.

[0028] In some embodiments, an arc transition surface is provided between the bottom surface of the diffusion groove 12 and the side wall of the spray hole 11. After the cooling water flows out of the spray hole 11, it will flow into the diffusion groove 12 along the arc transition surface under the action of the Coanda effect, reducing the direct spraying of cooling water, thereby adjusting the distribution of cooling water and making the cooling water more evenly distributed within the spray range.

[0029] In some embodiments, the width of the diffusion groove 12 gradually decreases from the middle to both ends, such as... Figure 2 As shown, the sidewalls of the diffuser 12 are arc-shaped, and the two arc-shaped sidewalls give the diffuser 12 a spindle shape. As the cooling water flows towards the end of the diffuser 12, the pressure gradually decreases. The distribution range of the cooling water in the diffuser 12 directly affects the spray range. The width of the diffuser 12 gradually decreases towards the end, allowing the cooling water to fill the end of the diffuser 12 even under relatively low pressure, thus ensuring that the diffuser 12 is filled with cooling water and consequently ensuring a stable cooling water spray range.

[0030] In some embodiments, the spray head 1 is hexagonal prism-shaped, such as... Figure 2 As shown, the shape of the spray head 1 can be referenced from the nut in the prior art. Installation facilitates clamping the roller ring cooling water nozzle and aligning and fixing it with the water pipe. Of course, users can also configure the spray head 1 with other structures as needed, such as pentagonal prisms, square prisms, etc., which are not limited here.

[0031] In some embodiments, the connecting rod 2 is cylindrical with external threads on its outer circumference, and the connecting rod 2 and the water pipe can be fixed together by the threaded connection. The threaded connection between the roller ring cooling water nozzle and the water pipe not only improves the firmness between them but also enhances their sealing performance. Furthermore, a sealing filler can be provided between the connecting rod 2 and the water pipe to further improve the sealing effect. Of course, users can also use other methods to connect the roller ring cooling water nozzle and the water pipe as needed; this is not limited to these methods.

[0032] In this embodiment, the roller ring cooling water nozzle is provided with a diffusion groove 12. The bottom surface of the diffusion groove 12 is an arc surface, and the width of the diffusion groove 12 gradually decreases from the center to both ends. The structure of the diffusion groove 12 ensures that the cooling water completely fills the diffusion groove 12 and sprays the cooling water onto the roller ring at a spray angle of more than 90°. The diameter of the spray hole 11 is also increased compared to the prior art. The increased size of the spray hole 11 increases the spray volume of cooling water, and the structure of the diffusion groove 12 expands the spray range of cooling water and the uniformity of cooling water within the spray range. Therefore, the roller ring cooling water nozzle can cool the roller ring evenly and rapidly, ensuring the cooling effect of the roller ring. In addition, the roller ring cooling water nozzle has a simple structure, making it easy to install and replace.

[0033] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0034] The roller ring cooling water nozzle provided in this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A roller ring cooling water nozzle, characterized in that, Includes a spray head (1) and a connecting rod (2) for connecting to a water pipe. The end face of the spray head (1) facing the material is the working surface. The working surface is provided with a water spray hole (11). The water spray hole (11) passes through the spray head (1) and the connecting rod (2) axially to communicate with the water pipe. The working surface is also provided with a diffusion groove (12) located on the outer periphery of the water spray hole (11) for spreading the cooling water. The diffusion groove (12) can increase the spray angle of the cooling water to more than 90°. The bottom surface of the diffusion groove (12) is an arc-shaped surface, and its radius of curvature is greater than the radius of the water spray hole (11); The diffusion groove (12) is arranged along the diameter of the inscribed circle of the working surface, and the water spray hole (11) is located at the center of the inscribed circle of the working surface. The width of the diffusion groove (12) gradually decreases from the middle to both ends. Cooling water can fill the ends of the diffusion groove (12) under relatively small pressure, thereby ensuring that the diffusion groove (12) is full of cooling water. An arc transition surface is provided between the bottom surface of the diffusion groove (12) and the side wall of the spray hole (11). After the cooling water flows out of the spray hole (11), it will flow into the diffusion groove (12) along the arc transition surface under the action of the Coanda effect, reducing the direct spraying of cooling water.

2. The roller ring cooling water nozzle according to claim 1, characterized in that, The diameter of the water spray hole (11) is greater than or equal to 8 mm.

3. The roller ring cooling water nozzle according to any one of claims 1 to 2, characterized in that, The spray head (1) is hexagonal prism-shaped and is coaxially arranged with the connecting rod (2). The water spray hole (11) extends along the axis of the spray head (1) and the connecting rod (2).

4. The roller ring cooling water nozzle according to claim 3, characterized in that, The connecting rod (2) is cylindrical and has external threads on its outer circumference for connecting to the water pipe.

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