Roll collar cooling device of modular rolling mill

Abstract

The invention discloses a roll collar cooling device of a modular rolling mill. Comprising a spraying pipe; the spraying pipe comprises a guide pipe section and a spraying section which are continuously arranged; the conduit section is provided with a water inlet; the spraying section is an arc section matched with the diameter of the roll collar, and a plurality of nozzles are arranged on the arc section of the spraying pipe towards the roll collar. The arrangement type and the structure type of the nozzles are redesigned, and water films and oxide scales on the surface of a rolled piece can be effectively removed, so that the roll collar is well cooled, the service life of the roll collar is ensured, meanwhile, the production accident of'roll explosion 'is greatly reduced, and the production efficiency is improved. The operation efficiency of a production line is improved, and the production cost and the labor intensity are reduced. The device is simple and compact in structure and convenient to machine and install.

Description

Technical Field

[0001] This invention belongs to the field of steel production technology, and in particular relates to a modular rolling mill roll ring cooling device. Background Technology

[0002] In my country, high-speed wire rod production refers to high-speed rolling equipment used in the steel industry for producing steel products. With the diversification of steel demand, high-speed wire rod production technology has continuously innovated, achieving high-speed, high-precision, and high-flexibility production, capable of handling wire rods of various specifications and materials. High-speed bar production lines offer advantages such as high rolling speed, high dimensional accuracy of finished products, good continuous strip quality and surface finish, and accurate and rapid braking. Therefore, in recent years, major steel mills have been building new high-speed bar production lines or converting existing slitting lines into high-speed bar production lines.

[0003] Modular rolling mills are core equipment in high-speed wire rod and high-speed bar production lines. Their main function is to roll steel into specific shapes and sizes, utilizing different roll pass profiles and precise rolling parameters to ensure that the dimensional tolerances, surface quality, and mechanical properties of the finished steel meet standard requirements. The roll cooler is crucial for cooling the rolls, ensuring their lifespan, reducing malfunctions, and maintaining production efficiency. In actual production, ineffective cooling of the rolls often leads to accidents such as "roll bursts," impacting production line efficiency and increasing worker workload. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a modular rolling mill roll ring cooling device.

[0005] To achieve the above objectives, the modular rolling mill roll ring cooling device of the present invention includes a spray pipe; the spray pipe includes a continuously arranged guide section and a spray section; the guide section is provided with a water inlet; The spray section is an arc segment adapted to the diameter of the roller ring. Multiple nozzles are arranged on the arc segment of the spray pipe facing the roller ring.

[0006] Furthermore, the maximum radius of the modular mill roll ring is R1, and the radius of the contour line formed by the free ends of each nozzle is R2, wherein R2-R1=15~30mm.

[0007] Furthermore, the radius of the arc segment of the spray pipe is R3, and R1, R2, and R3 are concentric circles; O is the center of the circle.

[0008] Furthermore, the intersection point of the center line of the nozzle at the end of the spray section and the arc R1 is J1, and the angle between J1 and the center O is α1, where ∠α1 = 40~45°.

[0009] Furthermore, the intersection points of the center lines of each nozzle and the arc R1, from bottom to top counterclockwise, are J1 to J10 respectively, and the angle between the center of the circle formed by two adjacent intersection points and the center O is α2, where ∠α2=15°.

[0010] Furthermore, the angles between the centerline of each nozzle and the normals of points J1 to J10, rotating counterclockwise from bottom to top, are β1 to β10, preferably ∠β1=∠β2=20°, ∠β3=25°, ∠β4=35°, ∠β5=45°, ∠β6=∠β7=∠β8=∠β9=∠β10=55°.

[0011] Furthermore, the inner holes of the three adjacent nozzles near the end of the spray section are tapered along the end face of the module mill roll ring. The size of the hole near the module mill roll ring is a1, and the size of the hole at the welded end of the spray section is a2, where a1=3mm and a2=5mm; the size along the radial direction of the module mill roll ring is b1, where b1=8~10mm.

[0012] Furthermore, the size of the inner bore of the other nozzles along the end face of the module mill roll ring is a3, and the size along the radial direction of the module mill roll ring is b2, where a3=3mm; b2=b1=8~10mm.

[0013] Furthermore, a fixing plate is provided on the spray pipe.

[0014] This invention relates to a modular rolling mill roll ring cooling device. The nozzle arrangement and structure have been redesigned to effectively remove water film and iron oxide scale from the surface of the rolled piece, thus ensuring excellent cooling of the roll ring and extending its service life. Simultaneously, it significantly reduces the occurrence of roll bursting accidents, improves production line efficiency, and reduces production costs and labor intensity. This device is simple, compact, and easy to manufacture and install. Attached Figure Description

[0015] Figure 1 This is one of the structural schematic diagrams of the modular mill roll ring cooling device of the present invention.

[0016] Figure 2 This is the second schematic diagram of the structure of the modular mill roll ring cooling device of the present invention.

[0017] Figure 3 This is a schematic diagram of the spray pipe structure of the rolling mill roll ring cooling device of the present invention.

[0018] Figure 4 yes Figure 3 Part I: Enlarged view of a specific area.

[0019] Figure 5A schematic diagram of the structure of nozzles 3202 to 3024 of the modular mill roll ring cooling device of the present invention.

[0020] Figure 6 yes Figure 5 LL-direction sectional view.

[0021] Figure 7 yes Figure 5 NN-direction cross-sectional view.

[0022] Figure 8 A schematic diagram of the structure of nozzles 3205 to 30210 of the rolling mill roll ring cooling device of the present invention.

[0023] Figure 9 yes Figure 8 MM-directed sectional view.

[0024] Figure 10 yes Figure 8 PP sectional view.

[0025] In the diagram: 1. External threaded connector; 2. Union connector; 3. Spray pipe; 301. Conduit; 302. Nozzle assembly; 303. Fixing plate; 304. End cap; 3021. Nozzle; 3022. Nozzle; 3023. Nozzle; 3024. Nozzle; 3025. Nozzle; 3026. Nozzle; 3027. Nozzle; 3028. Nozzle; 3029. Nozzle; 30210. Nozzle. Detailed Implementation

[0026] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0027] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0028] 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 one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] Example 1 Combination Figure 1-4 This embodiment of a modular rolling mill roll ring cooling device is characterized by including an external threaded connector 1, a union connector 2, and a spray pipe 3. One end of the union connector 2 is connected to the external threaded connector 1, and the other end is connected to the spray pipe 3. The other end of the external threaded connector 1 is connected to the cooling water outlet on the modular rolling mill housing.

[0031] The spray pipe 3 is of welded type and includes a guide tube 301, a nozzle assembly 302, a fixing plate 303, and a cap 304. The nozzle assembly 302 includes nozzles 3021, 3022, 3023, 3024, 3025, 3026, 3027, 3028, 3029, and 30210. The nozzle assembly 302 is arranged along the circumference of the roll ring. The fixing plate 303 is fixed to the housing of the modular rolling mill by bolts.

[0032] R1 is the maximum radius of the module rolling mill roll ring, and R2 is the outline formed by the closest point of the outer contour of the nozzle assembly 302 to R1, preferably R2-R1=15~30mm. R3 is the radius of the arc segment of the guide tube 301, and R1, R2, and R3 are concentric circles with O as the center. The intersection point of the centerline of the nozzle 3021 and the arc of R1 is J1, and the central angle formed by J1 and the center O is α1, preferably ∠α1=40~45°. The intersection points of the centerline of the nozzle assembly 302 and the arc of R1, from bottom to top counterclockwise, are J1 to J10, and the central angle formed by two adjacent intersection points and the center O is α2, preferably ∠α2=15°.

[0033] The center lines of the nozzles 3021 to 30210 included in the nozzle assembly 302 and the normals of the points J1 to J10 are β1 to β10 respectively from bottom to top counterclockwise, preferably ∠β1=∠β2=20°, ∠β3=25°, ∠β4=35°, ∠β5=45°, ∠β6=∠β7=∠β8=∠β9=∠β10=55°.

[0034] Example 2 Combination Figure 5-7This embodiment of a modular rolling mill roll ring cooling device has a structure basically the same as that of Embodiment 1. The inner bores of nozzles 3022, 3023, and 3024 are conical along the end face of the modular rolling mill roll ring. The size of the bore near the modular rolling mill roll ring is a1, and the size of the bore at the welding end with the guide tube 301 is a2. Preferably, a1 = 5mm and a2 = 3mm. The radial size of the inner bores of nozzles 3022, 3023, and 3024 along the modular rolling mill roll ring is b1, preferably b1 = 8~10mm.

[0035] Example 3 Combination Figure 8-10 This embodiment of a modular rolling mill roll ring cooling device has a structure basically the same as that of Embodiment 1. The inner hole of nozzles 3021, 3025, 3026, 3027, 3028, 3029, and 30210 along the end face of the modular rolling mill roll ring is a3, preferably a3 = 3mm. The inner hole of nozzles 3021, 3025, 3026, 3027, 3028, 3029, and 30210 along the radial direction of the modular rolling mill roll ring is b2, preferably b2 = b1 = 8~10mm.

[0036] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described above. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Many other changes and modifications made without departing from the concept and scope of the present invention should be considered within the scope of protection of the present invention.

[0037] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0038] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A cooling device for a modular rolling mill roll ring, characterized in that, Includes a spray pipe; the spray pipe includes a continuously arranged guide pipe section and a spray section; the guide pipe section is provided with a water inlet; The spray section is an arc segment adapted to the diameter of the roller ring. Multiple nozzles are arranged on the arc segment of the spray pipe facing the roller ring.

2. The modular rolling mill roll ring cooling device according to claim 1, characterized in that: The maximum radius of the modular mill roll ring is R1, and the radius of the contour line formed by the free ends of each nozzle is R2, where R2-R1=15~30mm.

3. The modular mill roll ring cooling device according to claim 2, characterized in that: The radius of the arc segment of the spray pipe is R3, and R1, R2, and R3 are concentric circles; O is the center of the circle.

4. The modular mill roll ring cooling device according to claim 3, characterized in that: The center line of the nozzle at the end of the spray section intersects the arc R1 at point J1, and the angle between J1 and the center O is α1, where ∠α1 = 40~45°.

5. The modular mill roll ring cooling device according to claim 3, characterized in that: The intersection points of the center lines of each nozzle and the arc R1, from bottom to top counterclockwise, are J1 to J10 respectively. The angle between the center of any two adjacent intersection points and the center O of the circle is α2, where ∠α2 = 15°.

6. The modular mill roll ring cooling device according to claim 5, characterized in that: The angles between the centerline of each nozzle and the normals of points J1 to J10, rotating counterclockwise from bottom to top, are β1 to β10, preferably ∠β1=∠β2=20°, ∠β3=25°, ∠β4=35°, ∠β5=45°, ∠β6=∠β7=∠β8=∠β9=∠β10=55°.

7. The modular rolling mill roll ring cooling device according to claim 1, characterized in that: The inner holes of the three adjacent nozzles near the end of the spray section are tapered along the end face of the module mill roll ring. The size of the hole near the module mill roll ring is a1, and the size of the hole at the welded end of the spray section is a2, where a1=3mm and a2=5mm; the size along the radial direction of the module mill roll ring is b1, where b1=8~10mm.

8. The modular rolling mill roll ring cooling device according to claim 7, characterized in that: The size of the inner hole of other nozzles along the end face of the module mill roll ring is a3, and the size along the radial direction of the module mill roll ring is b2, where a3=3mm; b2=b1=8~10mm.

9. The modular rolling mill roll ring cooling device according to claim 1, characterized in that, A fixing plate is provided on the spray pipe.

Images