An automated purging device with directional flow guiding effect
By installing an automated purging device with directional flow guidance on the cold rolling mill, and using a combination of nozzles and guide plates, the problem of controlling oil coke defects in traditional cold rolling mills has been solved, thereby improving the quality and production efficiency of cold-rolled steel sheets.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHU EVERBRIGHT MATERIAL TECH CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-29
AI Technical Summary
In traditional reciprocating cold rolling mills, during high-speed rolling, the rolling oil forms oil coke defects on the surface of the strip, which are difficult to control, resulting in low quality and low production efficiency of cold-rolled steel sheets.
An automated blowing device with directional flow guidance is installed on the cold rolling mill. Using a combination of nozzles and guide plates, compressed air is used to efficiently guide the splashes and residual emulsion on the plate surface, thus avoiding the formation of oil coke defects.
It improves the quality and production efficiency of cold-rolled steel sheets, reduces the occurrence of oil coke defects, and enhances the surface cleanliness of cold-rolled steel sheets.
Smart Images
Figure CN224294302U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of steel plate manufacturing, and specifically relates to an automated purging device with directional flow guidance effect. Background Technology
[0002] Among the quality defects in cold-rolled substrates used in home appliances, oil coke defects are one of the major defects in appliance panels, typically accounting for a significant percentage of monthly quality losses. Therefore, improving the surface cleanliness of cold-rolled steel sheets has become a key element in the quality control of home appliance panels, and the level of control over cold-rolled oil coke defects directly determines the finished product qualification rate of steel used in home appliance panels.
[0003] Currently, advanced cold rolling production lines both domestically and internationally generally adopt a multi-stand continuous rolling mode. Through segmented lubrication control and post-rolling online cleaning systems, they effectively suppress the problem of char spots caused by high-temperature carbonization of rolling oil. However, production enterprises using traditional reciprocating cold rolling mills face the challenge of controlling oil coke defects due to the process characteristics of single-stand continuous rolling. Specifically, during high-speed rolling in reciprocating mills, the rolling oil is continuously subjected to the dual effects of mechanical shearing and high-temperature friction, which easily leads to localized overheating on the surface of the strip, causing the base oil to decompose and generate gum-like substances. Under these conditions, traditional reciprocating cold rolling mills cannot optimize lubrication through segmented control (such as using high-viscosity oil for roughing and low-viscosity oil for finishing) as in multi-stand continuous rolling production lines. At the same time, the oil circuit system used in a single stand is more prone to accumulating metal debris and oxidation products. These impurities become catalytic media for oil coking at high temperatures, significantly increasing the probability of surface black spot defects.
[0004] Therefore, the applicant hopes to find a technical solution to improve the above-mentioned technical problems. Utility Model Content
[0005] In view of this, the purpose of this utility model is to provide an automated purging device with directional flow guidance effect, which can efficiently and timely guide the splashes and residual emulsion on the plate surface, thereby avoiding the concentration area of oil coke defects that may be formed on the cold-rolled steel plate, and improving the quality and production efficiency of the cold-rolled steel plate.
[0006] The technical solution adopted in this utility model is as follows:
[0007] An automated purging device with directional airflow guidance is installed on a reciprocating cold rolling mill for producing cold-rolled steel sheets. It includes several nozzles mounted above the rolls, with a left guide plate and a right guide plate installed at both ends of the rolls. Each nozzle is connected to a compressed air pipe, and the nozzles are spaced apart along the axis of the rolls. The axis of the nozzle located in the center is perpendicular to the axis of the rolls, while the axes of the nozzles located on either side of the center are inclined relative to the axis of the rolls. The length directions of both the left and right guide plates are inclined relative to the axis of the rolls.
[0008] Preferably, the compressed air pipeline is located above each nozzle; wherein the compressed air pipeline includes a first compressed air pipeline unit and a second compressed air pipeline unit that are connected in a continuous manner, and the first compressed air pipeline unit and the second compressed air pipeline unit are respectively connected to a compressed air supply source pipeline.
[0009] Preferably, the nozzle is a Silvent nozzle or a Skyi705 nozzle.
[0010] Preferably, the axes of the nozzles located on both sides of the center form an angle of 30-60° with respect to the axis of the roll.
[0011] Preferably, the nozzle outlet diameter ranges from 2 to 5 mm, and the spacing between adjacent nozzles is 50 to 150 mm.
[0012] Preferably, the roll is located behind the nozzle, with a distance of 15-20 cm between them, and the cold-rolled steel sheet is located directly below the roll.
[0013] Preferably, the left guide plate and the right guide plate are symmetrically distributed; wherein, the left guide plate extends from the nozzle position to the front side of the roller in the front-back direction, which is conducive to timely and efficient guiding of the emulsion residue.
[0014] Preferably, the cross-section of the left guide plate is L-shaped; wherein, the inner surface of the left guide plate is provided with a plurality of turbulence enhancement grooves, the turbulence enhancement grooves extend along the length direction of the guide plate, covering 40%-60% of the working area of the guide plate, and the groove direction of the turbulence enhancement grooves forms an angle of 15-30° with the airflow direction ejected from the nozzle.
[0015] Preferably, the cross-sectional shape of the turbulence enhancement groove is semi-circular, wherein the depth of the turbulence enhancement groove is 0.2-0.5 mm, and the spacing between adjacent turbulence enhancement grooves is 1-3 mm.
[0016] Preferably, the left guide vane and the right guide vane are arranged in a V-shape.
[0017] This utility model proposes an automated blowing device with directional flow guidance effect, consisting of a compressed air nozzle, a left guide plate, and a right guide plate. When the rolls are cold rolling the cold-rolled steel sheet, the automated blowing device provided in this application can efficiently and timely guide the splashes and residual emulsion on the plate surface, thereby avoiding the concentration area of oil coke defects that may form on the cold-rolled steel sheet, and improving the quality of the cold-rolled steel sheet and production efficiency. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of an automated purging device with directional flow guidance effect under a specific embodiment of the present invention (left and right guide plates are not shown).
[0019] Figure 2 This is a schematic diagram of the structure of an automated purging device with directional flow guidance effect according to a specific embodiment of this utility model;
[0020] Reference numerals: First compressed air duct unit 10a, Second compressed air duct unit 10b, Nozzle 10c, Nozzle axis 10d, Roll 10e, Cold-rolled steel plate 10f, Left guide plate 20a, Right guide plate 20b, Turbulence enhancement groove 21 Detailed Implementation
[0021] This utility model discloses an automated purging device with directional flow guidance effect, installed on a reciprocating cold rolling mill for producing cold-rolled steel sheets. It includes several nozzles installed above the rolls, with a left guide plate and a right guide plate installed at both ends of the rolls. Each nozzle is connected to a compressed air pipe, and the nozzles are spaced apart along the axis of the rolls. The axis of the nozzle located in the center is perpendicular to the axis of the rolls, while the axes of the nozzles located on either side of the center are inclined relative to the axis of the rolls. The length directions of both the left and right guide plates are inclined relative to the axis of the rolls.
[0022] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
[0023] Please see Figure 1 and Figure 2As shown, an automated purging device with directional flow guidance effect is installed on a reciprocating cold rolling mill (a known structure, not shown in the figure) for producing cold-rolled steel sheet 10f. It includes a plurality of nozzles 10c installed above the roll 10e, and a left guide plate 20a and a right guide plate 20b are respectively installed at both ends of the roll 10e. In practice, the left guide plate 20a and the right guide plate 20b can be fixedly installed on the mounting housing (a known structure, not shown in the figure) of the reciprocating cold rolling mill by welding. These are conventional technical choices for those skilled in the art.
[0024] In this embodiment, each nozzle 10c is connected to a compressed air pipe, and each nozzle 10c is spaced apart on the axis of the roll 10e; the axis of the nozzle 10c located in the middle is perpendicular to the axis of the roll 10e, and the axes 10d of the nozzles located on both sides of the middle are inclined relative to the axis of the roll 10e; the axes of the left guide plate 20a and the right guide plate 20b are both inclined relative to the axis of the roll 10e.
[0025] Preferably, in order to achieve efficient and automated purging of compressed air, in this embodiment, the compressed air pipeline is located above each nozzle 10c; wherein, the compressed air pipeline includes a first compressed air pipeline unit and a second compressed air pipeline unit that are connected in a connected manner, the first compressed air pipeline unit 10a and the second compressed air pipeline unit 10b are respectively connected to the compressed air supply source pipeline to ensure sufficient supply of compressed air. Specifically, in this embodiment, each nozzle 10c is respectively installed on the second compressed air pipeline unit 10b.
[0026] Preferably, in order to further achieve efficient and automated purging of compressed air, in this embodiment, the outlet diameter of the nozzle 10c is 2-5mm, and the spacing between adjacent nozzles 10c is 50-150mm; the roll 10e is located behind the nozzle 10c, and the distance between them is 15-20cm; the cold-rolled steel plate 10f is located directly below the roll 10e; the axis 10d of the nozzles on both sides located in the middle forms an angle of 30-60° with respect to the axis of the roll 10e; specifically, preferably, in this embodiment, the nozzle 10c is a Silvent model nozzle 10c or a Skyi705 model nozzle 10c.
[0027] Preferably, in this embodiment, the left guide plate 20a and the right guide plate 20b are symmetrically distributed; wherein, the left guide plate 20a extends from the nozzle 10c to the front side of the roller 10e in the front-back direction, which is conducive to timely and efficient guiding of the emulsion residue.
[0028] Preferably, in order to further achieve a fully efficient directional flow guidance effect, in this embodiment, the cross-section of the left guide plate 20a is L-shaped; wherein, the inner surface of the left guide plate 20a is provided with a plurality of turbulence enhancement grooves 21, the turbulence enhancement grooves 21 extend along the length direction of the guide plate, and cover 40%-60% of the working area of the guide plate (i.e., the inner surface area of the guide plate), and the groove direction of the turbulence enhancement grooves 21 forms an angle of 15-30° with the airflow direction ejected by the nozzle 10c;
[0029] More preferably, in this embodiment, the left guide plate 20a and the right guide plate 20b are arranged in a V-shape; the cross-sectional shape of the turbulence enhancement groove 21 is semi-circular, wherein the depth of the turbulence enhancement groove 21 is 0.2-0.5mm, and the spacing between adjacent turbulence enhancement grooves 21 is 1-3mm.
[0030] This embodiment proposes an automated blowing device with directional flow guidance effect, consisting of a compressed air nozzle 10c, a left guide plate 20a, and a right guide plate 20b. When the roll 10e performs cold rolling on the cold-rolled steel sheet 10f, the automated blowing device provided in this embodiment efficiently and promptly guides the splashes and residual emulsion on the sheet surface, thereby avoiding the formation of concentrated areas of oil coke defects on the cold-rolled steel sheet 10f, improving the quality and production efficiency of the cold-rolled steel sheet 10f.
[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An automated purging device with directional flow guidance effect, characterized in that, Installed on a reciprocating cold rolling mill for producing cold-rolled steel sheets, the device includes several nozzles mounted above the rolls, with a left guide plate and a right guide plate installed at both ends of the rolls. Each nozzle is connected to a compressed air pipe, and the nozzles are spaced apart along the axis of the rolls. The axis of the nozzle located in the center is perpendicular to the axis of the rolls, while the axes of the nozzles located on either side of the center are inclined relative to the axis of the rolls. The length directions of both the left and right guide plates are inclined relative to the axis of the rolls.
2. The automated purging device with directional flow guidance effect according to claim 1, characterized in that, The compressed air pipeline is located above each nozzle; wherein the compressed air pipeline includes a first compressed air pipeline unit and a second compressed air pipeline unit that are connected in a continuous manner, and the first compressed air pipeline unit and the second compressed air pipeline unit are respectively connected to the compressed air supply source pipeline.
3. The automated purging device with directional flow guidance effect according to claim 1, characterized in that, The nozzle is either a Silvent model nozzle or a Skyi705 model nozzle.
4. The automated purging device with directional flow guidance effect according to claim 1, characterized in that, The axes of the nozzles located on either side of the center form an angle of 30-60° with respect to the axis of the roll.
5. The automated purging device with directional flow guidance effect according to claim 1, characterized in that, The nozzle has an outlet diameter of 2-5 mm and a spacing of 50-150 mm between adjacent nozzles.
6. The automated purging device with directional flow guidance effect according to claim 1, characterized in that, The roller is located behind the nozzle, with a distance of 15-20cm between them, and the cold-rolled steel sheet is located directly below the roller.
7. The automated purging device with directional flow guidance effect according to claim 6, characterized in that, The left guide plate and the right guide plate are symmetrically distributed; wherein, the left guide plate extends from the nozzle position to the front side of the roller in the front-back direction, which is conducive to timely and efficient guiding of the emulsion residue.
8. The automated purging device with directional flow guidance effect according to claim 7, characterized in that, The cross-section of the left guide plate is L-shaped; wherein, the inner surface of the left guide plate is provided with multiple turbulence enhancement grooves, the turbulence enhancement grooves extend along the length direction of the guide plate, covering 40%-60% of the working area of the guide plate, and the groove direction of the turbulence enhancement grooves forms an angle of 15-30° with the airflow direction ejected from the nozzle.
9. The automated purging device with directional flow guidance effect according to claim 8, characterized in that, The cross-sectional shape of the turbulence enhancement groove is semi-circular, wherein the depth of the turbulence enhancement groove is 0.2-0.5mm, and the spacing between adjacent turbulence enhancement grooves is 1-3mm.
10. The automated purging device with directional flow guidance effect according to claim 7, characterized in that, The left and right air deflectors are arranged in a V-shape.