Cleaning device for hot-rolled strip surface dirt
By designing the angle and height of the nozzle and spray nozzle to match, the problem of surface contamination in hot-rolled strip steel was solved, improving product quality and mechanical properties, and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN VALIN LIANYUAN IRON & STEEL CO LTD
- Filing Date
- 2025-03-04
- Publication Date
- 2026-06-09
AI Technical Summary
Dirt on the surface of hot-rolled strip steel is difficult to remove effectively during the rolling process, affecting the product's appearance quality and mechanical properties.
Design a cleaning device for the surface dirt of hot-rolled strip steel, including an inlet guide, a first spray pipe and a second spray pipe, with a nozzle at the end of the spray pipe. By adjusting the spray angle and height, ensure that the water flow covers the surface of the hot-rolled strip steel to remove dirt.
It achieves surface cleaning of hot-rolled strip steel, improves product quality, reduces defect rate, enhances welding strength and corrosion resistance, and reduces production costs.
Smart Images
Figure CN224333101U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hot-rolled strip steel production, and in particular to a cleaning device for cleaning dirt on the surface of hot-rolled strip steel. Background Technology
[0002] Hot-rolled strip steel is a common metallic material widely used in industrial production to manufacture various structural components and parts. Surface contamination is a common problem during the production process. Currently, the method for treating contamination during rolling is cross-spraying, where contaminants are sprayed onto the looper; however, this cannot prevent contaminants from falling onto the surface of the hot-rolled strip steel. Surface contamination of hot-rolled strip steel not only affects the appearance quality of the product but can also negatively impact its mechanical properties. Utility Model Content
[0003] The main purpose of this invention is to provide a cleaning device for the surface dirt of hot-rolled strip steel, which solves the technical problem of surface dirt of hot-rolled strip steel during the rolling process.
[0004] To achieve the above objectives, this utility model provides a cleaning device for the surface contamination of hot-rolled strip steel, comprising:
[0005] An inlet guide includes an operating side and a transmission side, which together form a conductive zone for conducting hot-rolled strip steel.
[0006] The first nozzle is located at the tail end on the operating side, with its opening facing the transmission area. The spray angle of the first nozzle relative to the transmission direction of the inlet guide is a first included angle.
[0007] The second nozzle is located at the tail end on the transmission side, and its opening faces the transmission area. The spray angle of the second nozzle relative to the transmission direction is the second included angle.
[0008] The difference between the first included angle and the second included angle is 10°.
[0009] In some embodiments, the first included angle is 75-85° and the second included angle is 65-95°.
[0010] In some embodiments, the first nozzle has a first nozzle at its end, and the second nozzle has a second nozzle at its end.
[0011] The first nozzle and the second nozzle are located close to the tail of the operating side and the transmission side, respectively.
[0012] In some embodiments, the angle formed by the first nozzle and the operating side is the first angle; the angle formed by the second nozzle and the transmission side is the second angle.
[0013] In some embodiments, the horizontal plane at the center of the first nozzle and the second nozzle is higher than the horizontal plane at the conductive area; wherein the height difference is 60-75 mm.
[0014] In some embodiments, the first nozzle is disposed at the tail end on the operating side, and the second nozzle is disposed at the tail end on the transmission side. The angle between the first nozzle, the second nozzle and the plane containing the transmission area is in the range of 15 to 30°.
[0015] In some embodiments, the first nozzle and the second nozzle are axially symmetrically distributed along the centerline of the transmission direction.
[0016] In some embodiments, the distance between the operating side and the transmission side of the inlet guide is 880–2250 mm.
[0017] In some embodiments, the diameters of the first and second nozzles are 1 to 4 mm.
[0018] In some embodiments, the first nozzle is fixed to the tail of the operating side by a pipe clamp; the second nozzle is fixed to the tail of the transmission side by a pipe clamp; the first nozzle, the second nozzle, the pipe clamp, the first nozzle and the second nozzle are made of stainless steel.
[0019] Compared with the prior art, the beneficial effects of this utility model are:
[0020] The above-described utility model provides a cleaning device for surface contamination of hot-rolled strip steel. An inlet guide includes an operating side and a transmission side, which together form a conduction zone for the hot-rolled strip steel. A first nozzle is located at the tail of the operating side, with its opening facing the conduction zone. The spray angle of the first nozzle relative to the inlet guide in the corresponding transmission direction is a first included angle. A second nozzle is located at the tail of the transmission side, with its opening facing the conduction zone. The spray angle of the second nozzle relative to the transmission direction is a second included angle. The difference between the first and second included angles is 10°. A first nozzle and a second nozzle are respectively installed at the ends of the first and second nozzles. By adjusting the first and second included angles and designing the heights of the first and second nozzles, the technical problem of surface contamination of hot-rolled strip steel during the rolling process is solved. This design simplifies installation, facilitates operation, and effectively removes surface contamination from hot-rolled strip steel, improving product quality. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0022] Figure 1 This is a diagram of a cleaning device for the surface dirt of hot-rolled strip steel according to this utility model;
[0023] Figure 2 This is a front view of the cleaning device for the surface dirt of hot-rolled strip steel according to this utility model;
[0024] Figure 3 This is a top view of the cleaning device for the surface dirt of hot-rolled strip steel according to this utility model;
[0025] The attached figures are labeled as follows:
[0026] 10. Entrance guide; 11. Operating side; 12. Transmission side; 13. Transmission zone; 21. First nozzle; 22. Second nozzle; 23. First nozzle; 24. Second nozzle; 25. Pipe clamp; 31. First included angle; 32. Second included angle; 40. Hot-rolled strip steel.
[0027] The implementation, functional features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0029] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.
[0030] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0031] To achieve the above objectives, this utility model provides a cleaning device for the surface contamination of hot-rolled strip steel, comprising:
[0032] An inlet guide 10 includes an operating side 11 and a transmission side 12, which together form a conductive zone 13 for conducting hot-rolled strip steel 40.
[0033] In some embodiments, the inlet guide 10 includes an operating side 11 and a transmission side 12, which surround and form a conductive zone 13 for conducting hot-rolled strip steel 40. The operating side 11 is located outside the inlet guide 10 and near the operating table; the transmission side 12 is located inside the inlet guide 10 and near the main drive; the long side of the operating side 11 and the long side of the transmission side 12 are both parallel to the conductive zone 13.
[0034] For a detailed explanation of this technical solution, please refer to [link / reference]. Figure 1 The diagram shows the cleaning device for the surface dirt of hot-rolled strip steel according to this utility model. Figure 2 The front view of the cleaning device for the surface dirt of hot-rolled strip steel of this utility model is shown to facilitate understanding of the installation positions of the first nozzle 21 and the second nozzle 22.
[0035] The first nozzle 21 is located at the tail of the operating side 11 and its opening faces the transmission area. The spray angle of the first nozzle 21 relative to the transmission direction of the inlet guide 10 is a first included angle 31.
[0036] In some embodiments, the first nozzle 21 contains water flow, and the water flow sprayed through the first nozzle 21 toward the inlet guide 10 in the corresponding transmission direction has an angle with the operating side 11 as the spray angle, which is the first angle 31.
[0037] The second nozzle 22 is located at the tail of the transmission side 12 and its opening faces the transmission area. The spray angle of the second nozzle 22 relative to the transmission direction is a second included angle 32.
[0038] The difference between the first included angle 31 and the second included angle 32 is 10°.
[0039] In some embodiments, the difference between the first included angle 31 and the second included angle 32 is set to 10° to ensure that the purging water angles of the first nozzle 21 provided at the tail of the transmission side 12 and the second nozzle 22 provided at the tail of the operation side 11 do not intersect, so as to ensure that the two water streams do not cancel each other out and can fully cover the surface of the hot-rolled strip steel, thereby improving the cleaning effect.
[0040] In some embodiments, the first included angle 31 is 75-85° and the second included angle 32 is 65-95°.
[0041] In some specific embodiments, the first included angle 31 is 75° and the second included angle 32 is 85°.
[0042] This utility model describes a cleaning device for the surface contamination of hot-rolled strip steel, solving the problem of surface contamination during the rolling process. A first spray pipe and a second spray pipe are symmetrically arranged on the operating side and transmission side of the inlet guide tail, respectively. The angle between the first and second spray pipes and the plane containing the transmission zone is between 15° and 30°. The first spray pipe has a first nozzle at its end, and the second spray pipe has a second nozzle at its end. The height difference between the horizontal plane containing the centers of the first and second nozzles and the horizontal plane containing the transmission zone is 60-75mm. Through the cooperation of the spray pipes and nozzles, the water curtain from both spray pipes completely covers the surface of the hot-rolled strip steel. The first spray pipe carries the main purging water, while the second spray pipe compensates for dead zones that the purging water from the first spray pipe cannot reach, or for contamination that has not been cleaned due to other reasons.
[0043] The above design effectively removes residual liquid and impurities from the surface of hot-rolled strip steel, providing clean materials for subsequent production, eliminating "oil-burnt" stains and surface quality defects, and improving the overall quality of the hot-rolled strip steel. A clean surface significantly improves the appearance and quality of the hot-rolled strip steel, reduces defect rates, and meets customer standards; it also enhances welding strength and reliability, ensuring the safety of the final product; it allows for better application of anti-rust coatings or other surface treatment technologies, improving the corrosion resistance of the hot-rolled strip steel; it reduces the difficulty of subsequent processing and increases production efficiency; and it reduces scrap caused by surface defects, thereby lowering production costs. Furthermore, this design is easy to operate and reliably installed.
[0044] For a detailed explanation of the angle parameters between the nozzle and the inlet guide operating side or transmission side corresponding to this technical solution, please refer to... Figure 3 The image shown is a top view of the cleaning device for the surface dirt of hot-rolled strip steel according to this utility model.
[0045] In some embodiments, the first nozzle 21 has a first nozzle 23 at its end, and the second nozzle 22 has a second nozzle 24 at its end.
[0046] The first nozzle 23 and the second nozzle 24 are located close to the tail of the operating side 11 and the transmission side 12, respectively.
[0047] In some embodiments, the ends of the first nozzle 21 and the second nozzle 22 that are away from the first nozzle 23 and the second nozzle 24 are the heads, and both are connected to a water tap. By controlling the water flow pressure to 8 to 15 bar, when the hot-rolled strip 40 passes through the tail of the inlet guide 10, the dirt on the surface of the hot-rolled strip 40 or the dirt that has fallen into the inlet guide 10 is blown away, thereby cleaning the surface of the hot-rolled strip. This reduces surface defects when the hot-rolled strip enters the work roll for rolling, facilitates subsequent processing, and improves the product quality of the hot-rolled strip.
[0048] In some embodiments, the water flow pressure of the first nozzle 23 and the second nozzle 24 affects the spray range of the water flow and the impact force on the surface dirt of the hot-rolled strip steel 40.
[0049] For example, if the water pressure of the first nozzle is too low, the spray range is insufficient to cover the surface of the hot-rolled strip steel; if the water pressure of the first nozzle is too high, the impact force on the dirt on the surface of the hot-rolled strip steel is too great, and the dirt on the surface of the hot-rolled strip steel will be washed into the inner wall of the inlet guide, and may subsequently fall onto the surface of the hot-rolled strip steel, affecting product quality.
[0050] For example, excessive water pressure from the first nozzle will affect the smoothness of the hot-rolled strip surface. Furthermore, it increases the pressure load on the first nozzle, affecting its service life.
[0051] In some embodiments, the angle formed by the first nozzle 23 and the operating side 11 is the first included angle 31; the angle formed by the second nozzle 24 and the transmission side 12 is the second included angle 32.
[0052] In some embodiments, the first nozzle 23 can spray a water curtain covering different areas of hot-rolled strip steel. By adjusting the range of the first included angle 31 and the second included angle 32, the purging water angles sprayed by the first nozzle 23 and the second nozzle 24 are made so that the two water streams do not cancel each other out and can fully cover the surface of the hot-rolled strip steel, thereby improving the cleaning effect.
[0053] In some embodiments, the horizontal plane where the center of the first nozzle 23 and the second nozzle 24 is located is higher than the horizontal plane where the conductive area 13 is located; wherein the height difference is 60-75mm.
[0054] In some embodiments, the height difference between the horizontal plane where the center of the first nozzle 23 and the second nozzle 24 is located and the horizontal plane where the conduction zone 13 is located can change the impact force and spray range of the water flow.
[0055] For example, if the height difference between the first nozzle 23 and the horizontal plane where the conduction zone 13 is located is too large, some dirt will splash onto the inner wall of the inlet guide during the process of cleaning the dirt on the surface of the hot-rolled strip steel, affecting the cleaning effect. If the height difference is too low, it is not enough to completely cover the surface of the hot-rolled strip steel, and the impact force of the water flow is too weak to remove the residual pollution on the surface of the hot-rolled strip steel.
[0056] Therefore, the height difference is set to 60-75mm to achieve a more uniform water flow covering the surface of the hot-rolled strip in a spray manner. This can flush away foreign objects generated by the friction between the side guide plate of the inlet guide and the edge of the hot-rolled strip, prevent them from being rolled into the rolling mill, and improve the rolling mill operating rate and the surface quality of the hot-rolled strip.
[0057] In some embodiments, the surface contamination of the hot-rolled strip steel is mainly caused by improper control of lubricating oil or other coolants during the rolling process, which may form stains on the surface of the hot-rolled strip steel; poor production environment, such as dust and pollutants on the equipment, may also drip onto the surface of the hot-rolled strip steel, resulting in contamination; and equipment contamination within the gap between the inlet guide and the work roll may fall onto the surface of the hot-rolled strip steel due to mill vibration.
[0058] In some embodiments, the first nozzle 21 is disposed at the tail of the operating side 11, and the second nozzle 22 is disposed at the tail of the transmission side 12. The angle between the first nozzle 21, the second nozzle 22 and the plane containing the transmission area is in the range of 15 to 30°.
[0059] In some specific embodiments, the angles of the first included angle 31 and the second included angle 32 are both 20°.
[0060] In some embodiments, the first nozzle 21 and the second nozzle 22 are axially symmetrically distributed along the centerline of the transmission direction.
[0061] In some embodiments, the first nozzle 21 and the second nozzle 22 are bent or 15° angled and can be fixed to the tail of the operating side 11 and the transmission side 12 of the inlet guide 10.
[0062] In some embodiments, the first nozzle and the second nozzle are axially symmetrically distributed along the centerline of the transmission direction; they are symmetrically arranged at the tail of the inlet guide and located on the operating side and the transmission side, respectively, so that before the hot-rolled strip is pressed into the work roll, the angle and height of the first nozzle and the second nozzle arranged at the tail of the inlet guide are coordinated so that the water curtain sprayed by the first nozzle and the second nozzle completely covers the surface of the hot-rolled strip, thereby removing dirt from the surface of the hot-rolled strip.
[0063] In some embodiments, the distance between the operating side 11 and the transmission side 12 of the inlet guide 10 is 880–2250 mm.
[0064] In some embodiments, the distance between the operating side and the drive side of the inlet guide is adjusted according to the size requirements of the rolled piece, so that the rolled piece can pass smoothly through the guide and be completely sprayed by the water curtain generated by the nozzle. The distance between the operating side and the drive side of the inlet guide needs to be controlled to be 880mm to 2250mm.
[0065] In some embodiments, the diameter of the first nozzle 23 and the second nozzle 24 is 1 to 4 mm.
[0066] In some embodiments, the diameters of the first and second nozzles can be adjusted according to the dimensions of the conductive zone and the hot-rolled strip steel, so that the water flow in the first and second nozzles completely covers the surface of the hot-rolled strip steel, thereby removing dirt.
[0067] In some embodiments, the first nozzle 21 is fixed to the tail of the operating side 11 by a pipe clamp 25; the second nozzle 22 is fixed to the tail of the transmission side 12 by a pipe clamp 25; the first nozzle 21, the second nozzle 22, the pipe clamp 25, the first nozzle 23 and the second nozzle 24 are made of stainless steel.
[0068] The aforementioned device for cleaning surface contaminants on hot-rolled strip steel utilizes a coordinated design of the first and second spray pipes, as well as the first and second nozzles, to remove contaminants from the surface of the hot-rolled strip steel. This clean surface, achieved during the work roll rolling process, improves product quality, enhances subsequent welding strength, reliability, and processing difficulty, strengthens the corrosion resistance of the hot-rolled strip steel, and reduces scrap rates, thereby lowering production costs.
[0069] The above technical solutions of this utility model are merely preferred embodiments and do not limit the patent scope of this utility model. All equivalent structural transformations made under the technical concept of this utility model using the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this utility model.
Claims
1. A cleaning device for the surface contamination of hot-rolled strip steel, characterized in that, include: An inlet guide (10) includes an operating side (11) and a transmission side (12), which together surround and form a conductive zone (13) for conducting heat-rolled strip (40). The first nozzle (21) is located at the tail of the operating side (11) and its opening faces the transmission area. The spray angle of the first nozzle (21) relative to the transmission direction of the inlet guide (10) is the first included angle (31). The second nozzle (22) is located at the tail of the transmission side (12) and its opening faces the transmission area. The spray angle of the second nozzle (22) relative to the transmission direction is the second included angle (32). The difference between the first included angle (31) and the second included angle (32) is 10°.
2. The cleaning device for surface contamination of hot-rolled strip steel according to claim 1, characterized in that, The first included angle (31) is 75~85°, and the second included angle (32) is 65~95°.
3. The cleaning device for surface contamination of hot-rolled strip steel according to claim 1, characterized in that, The first nozzle (21) has a first nozzle (23) at its end, and the second nozzle (22) has a second nozzle (24) at its end; The first nozzle (23) and the second nozzle (24) are located close to the tail of the operating side (11) and the transmission side (12), respectively.
4. The cleaning device for surface contamination of hot-rolled strip steel according to claim 3, characterized in that, The angle formed by the first nozzle (23) and the operating side (11) is the first angle (31); the angle formed by the second nozzle (24) and the transmission side (12) is the second angle (32).
5. The cleaning device for surface contamination of hot-rolled strip steel according to claim 3, characterized in that, The horizontal plane where the center of the first nozzle (23) and the second nozzle (24) is located is higher than the horizontal plane where the conductive area (13) is located; wherein, the height difference is 60~75 mm.
6. The cleaning device for surface contamination of hot-rolled strip steel according to claim 1, characterized in that, The first nozzle (21) is located at the tail of the operating side (11), and the second nozzle (22) is located at the tail of the transmission side (12). The angle between the first nozzle (21), the second nozzle (22) and the plane containing the transmission area (13) is 15~30°.
7. The cleaning device for surface contamination of hot-rolled strip steel according to claim 1, characterized in that, The first nozzle (21) and the second nozzle (22) are axially symmetrically distributed along the center line of the transmission direction.
8. The cleaning device for surface contamination of hot-rolled strip steel according to claim 1, characterized in that, The distance between the operating side (11) and the transmission side (12) of the entrance guide (10) is 880~2250mm.
9. The cleaning device for surface contamination of hot-rolled strip steel according to claim 3, characterized in that, The diameters of the first nozzle (23) and the second nozzle (24) are 1 to 4 mm.
10. The cleaning device for surface contamination of hot-rolled strip steel according to claim 1, characterized in that, The first nozzle (21) is fixed to the tail of the operating side (11) by a pipe clamp (25); the second nozzle (22) is fixed to the tail of the transmission side (12) by a pipe clamp (25); the first nozzle (21), the second nozzle (22), the pipe clamp (25), the first nozzle (23) and the second nozzle (24) are made of stainless steel.