Pickling equipment for plate continuous rolling process
By designing a combined process for pickling equipment, the impurities on the surface of the sheet are removed by spraying, brushing, and rinsing with pickling solution. This solves the problem that existing equipment cannot remove impurities that are insoluble in acid, improves the quality of cold-rolled products, and protects the cold rolling mill equipment.
Patent Information
- Application Number
- CN202520206688.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-02-10
AI Technical Summary
Existing pickling equipment cannot effectively remove acid-insoluble inclusions and impurities from the surface of the sheet metal, resulting in residual surface defects, which affect the quality of cold rolling and damage the cold rolling mill equipment.
An acid pickling device was designed, comprising an acid pickling tank, a nozzle assembly, a brush roller assembly, and a rinsing tank. It removes impurities from the surface of the board through a combination of acid spraying, brushing, and rinsing, and improves the cleaning effect through the mechanical brushing of the brush roller assembly.
It effectively removes impurities from the surface of the sheet, improves the surface quality of cold-rolled products, avoids damage to the cold rolling mill caused by hot-rolled strip steel, and provides high-quality cold-rolled billets.
Smart Images
Figure CN223813546U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of plate continuous rolling pickling technology, in particular to a pickling equipment in plate continuous rolling process. BACKGROUND
[0002] In the process of plate continuous casting and rolling hot-rolled sheet, because of the fast continuous casting speed, the inclusions in the steel are difficult to float, the molten steel in the crystallizer is easy to be disturbed, causing the protective slag to be involved in the continuous casting surface and the skin, resulting in the formation of slag and inclusions and other surface defects on the surface of the hot-rolled sheet. If these surface defects remain on the surface of the steel plate after hot rolling, the method of pickling is generally used to remove them. Many slag and impurities will react with the acid or dissolve in the acid and be removed with the liquid flow. However, sometimes the slag and impurities remaining on the surface of the pickling strip are insoluble in the acid, and therefore cannot be removed by pickling. If the above-mentioned residues cannot be removed during pickling, it will be very harmful to the surface quality of the pickled strip product for the subsequent cold rolling process, especially in the production of high-quality products such as CGL production line. In addition to the fatal impact on the surface quality, the slag and inclusions are further pressed into the pickled strip matrix after cold rolling, forming difficult-to-remove surface defects, which will also cause serious harm to the subsequent cold rolling process equipment, such as damage to the rolling mill and cold rolling mill. Therefore, we propose a pickling equipment in plate continuous rolling process. SUMMARY
[0003] In view of the defects of the prior art, the purpose of the present utility model is to provide a pickling equipment in plate continuous rolling process, which has the advantages of good cleaning effect, and solves the problem that the existing pickling equipment cannot remove the residual insoluble impurities in the acid during use, which can cause damage to the material.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pickling equipment in plate continuous rolling process, comprising a pickling tank, a first nozzle group, a first brush roller group, a second nozzle group, a second brush roller group, a third nozzle group, a feeding roller group and a rinsing tank are sequentially arranged from left to right on the top of the right side of the pickling tank, the bottom of the back of the pickling tank and the rinsing tank is communicated with a first pump, one side of the first pump is communicated with a discharge pipe, one side of the discharge pipe is communicated with a spray head, one side of the first nozzle group, the second nozzle group and the third nozzle group is communicated with a drain pipe, one side of the drain pipe is communicated with a second pump, one side of the second pump is communicated with a shell.
[0005] Preferably, the first brush roller group, the second brush roller group and the feeding roller group each comprise an upper roller, one side of the upper roller is movably connected with a fixed plate, one side of the fixed plate is fixedly connected with a double-shaft motor, one side of the double-shaft motor is fixedly connected with the upper roller, the other side of the double-shaft motor is fixedly connected with a driving gear, one side of the driving gear is engaged with a driven gear, one side of the driven gear is fixedly connected with a lower roller.
[0006] Preferably, the left side of the shell is fixedly connected with the pickling tank, the right side of the shell is fixedly connected with the rinsing tank, and the rear side of the shell is inserted with a filter plate.
[0007] Preferably, the bottom of the front side of the pickling tank and the rinsing tank is communicated with a fixed pipe, and one side of the fixed pipe is movably connected with a control valve.
[0008] Preferably, the rear side of the fixed plate is movably connected with the lower roller through a bearing, and the front side of the fixed plate is provided with a movable hole.
[0009] Compared with the prior art, the pickling equipment for the plate continuous rolling process has the following beneficial effects:
[0010] 1、the feeding roller group is started, so that the material moves to the right side, then the first pump machine at the back of the pickling tank is started, the pickling liquid in the inner cavity of the pickling tank is pumped out, the pickling liquid is sprayed to the surface of the plate through the discharge pipe and the spray head, the pickling work is carried out, then the second pump machine is started, the water in the inner cavity of the shell is pumped out, the water is sprayed to the surface of the plate for flushing through the drain pipe, the first nozzle group, the second nozzle group and the third nozzle group, at the same time, the first brush roller group and the second brush roller group are started, so that the surface of the plate is brushed, the cleaning work is carried out, after the impurities are cleaned, the first pump machine at the back of the rinsing tank is started, so that the surface of the plate is washed again, and the impurities are avoided from being left.
[0011] 2、the double-shaft motor is started, so that the upper roller is driven to rotate, at the same time, the driving gear is also driven to rotate, the driving gear drives the driven gear to rotate, and the driven gear drives the lower roller to rotate, the cleaning degree of the surface of the pickling strip after pickling can be improved, the surface defects of the hot-rolled pickling strip product are reduced, high-quality billets are provided for further cold rolling and subsequent processes of the product, and the damage of the hot-rolled pickling strip with surface defects to the cold rolling mill is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a structural schematic view of the utility model;
[0013] Figure 2 It is a three-dimensional structural schematic view of the utility model;
[0014] Figure 3 It is a sectional view structural schematic view of the pickling tank of the utility model.
[0015] In the figure: 1, pickling tank; 2, first nozzle group; 3, first brush roller group; 4, second nozzle group; 5, second brush roller group; 6, third nozzle group; 7, feeding roller group; 8, rinsing tank; 9, first pump; 10, discharge pipe; 11, spray head; 12, shell; 13, second pump; 14, drain pipe; 15, upper roller; 16, double-shaft motor; 17, driving gear; 18, driven gear; 19, fixed plate; 20, lower roller; 21, filter plate. DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0017] Secondly, "one embodiment" or "embodiment" referred to herein means that a certain feature, structure or characteristic can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent of or mutually exclusive of other embodiments.
[0018] Embodiment one:
[0019] Please refer to Figure 1 , Figure 2 and Figure 3 , the present application provides a kind of pickling equipment in plate continuous rolling process, including pickling tank 1, the top of the right side of pickling tank 1 is sequentially provided with first nozzle group 2 from left to right, first brush roller group 3, second nozzle group 4, second brush roller group 5, third nozzle group 6, feeding roller group 7 and rinsing tank 8, the bottom of the back of pickling tank 1 and rinsing tank 8 is communicated with first pump 9, one side of first pump 9 is communicated with discharge pipe 10, one side of discharge pipe 10 is communicated with spray head 11, one side of first nozzle group 2, second nozzle group 4 and third nozzle group 6 is communicated with drain pipe 14, one side of drain pipe 14 is communicated with second pump 13, one side of second pump 13 is communicated with shell 12, the left side of shell 12 is fixedly connected with pickling tank 1, the right side of shell 12 is fixedly connected with rinsing tank 8, the back of shell 12 is inserted with filter plate 21, the bottom of the front of pickling tank 1 and rinsing tank 8 is communicated with fixed pipe, and one side of fixed pipe is movably connected with control valve.
[0020] The specific action of the technical scheme is: starting the feeding roller set 7, so that the material moves to the right side, then starting the first pump machine 9 at the back of the pickling tank 1, pumping out the pickling liquid in the inner cavity of the pickling tank 1, spraying the pickling liquid to the surface of the plate through the discharge pipe 10 and the spray head 11 to perform pickling work, then starting the second pump machine 13, pumping out the water in the inner cavity of the shell 12, spraying the water to the surface of the plate through the drain pipe 14, the first nozzle set 2, the second nozzle set 4 and the third nozzle set 6 to perform flushing, at the same time, starting the first brush roller set 3 and the second brush roller set 5 to brush the surface of the plate to perform cleaning work, after the impurities are cleaned, starting the first pump machine 9 at the back of the rinsing tank 8 to facilitate the surface of the plate to be rinsed again, and avoid impurities remaining.
[0021] Embodiment two:
[0022] Based on the embodiment one, the utility model discloses as shown in Figure 1 and Figure 2 The first brush roller set 3, the second brush roller set 5 and the feeding roller set 7 all include an upper roller 15, one side of the upper roller 15 is movably connected with a fixed plate 19, one side of the fixed plate 19 is fixedly connected with a double-shaft motor 16, one side of the double-shaft motor 16 is fixedly connected with the upper roller 15, the other side of the double-shaft motor 16 is fixedly connected with a driving gear 17, one side of the driving gear 17 is engaged with a driven gear 18, one side of the driven gear 18 is fixedly connected with a lower roller 20, the rear side of the fixed plate 19 is movably connected with the lower roller 20 through a bearing, and the front side of the fixed plate 19 is provided with a movable hole.
[0023] The specific action of the technical scheme is: starting the double-shaft motor 16 to drive the upper roller 15 to rotate, at the same time, the driving gear 17 is also driven to rotate, the driving gear 17 drives the driven gear 18 to rotate, and the driven gear 18 drives the lower roller 20 to rotate, which can improve the cleaning degree of the surface of the pickling strip after pickling, reduce the surface defects of the hot-rolled pickling strip product, provide high-quality billets for further cold rolling and subsequent processes, and avoid damage to the cold rolling mill caused by the hot-rolled pickling strip with surface defects.
[0024] Working principle: starting the feeding roller set 7, so that the material moves to the right side, then starting the first pump machine 9 at the back of the pickling tank 1, pumping out the pickling liquid in the inner cavity of the pickling tank 1, spraying the pickling liquid to the surface of the plate through the discharge pipe 10 and the spray head 11 to perform pickling work, then starting the second pump machine 13, pumping out the water in the inner cavity of the shell 12, spraying the water to the surface of the plate through the drain pipe 14, the first nozzle set 2, the second nozzle set 4 and the third nozzle set 6 to perform flushing, at the same time, starting the first brush roller set 3 and the second brush roller set 5 to brush the surface of the plate to perform cleaning work, after the impurities are cleaned, starting the first pump machine 9 at the back of the rinsing tank 8 to facilitate the surface of the plate to be rinsed again, and avoid impurities remaining;
[0025] The double-shaft motor 16 is started to drive the upper roller 15 to rotate, and the driving gear 17 is also driven to rotate, the driving gear 17 drives the driven gear 18 to rotate, and the driven gear 18 drives the lower roller 20 to rotate, so that the cleaning degree of the pickling strip steel surface after pickling is improved, the surface defects of the hot-rolled pickling strip steel product are reduced, high-quality billets are provided for the further cold rolling and subsequent processes of the product, and the damage of the hot-rolled pickling strip steel with surface defects to the cold rolling mill is avoided.
[0026] Importantly, it should be noted that the constructions and arrangements of the present application shown in the various exemplary embodiments are merely illustrative. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) using the principles and concepts taught herein. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of discrete elements or positions can be altered or varied. Accordingly, all such variations are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be changed or re-sequenced without departing from the scope of the application. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the application. Accordingly, the present application is not limited to the particular embodiments described herein, but extends to any embodiments within the scope of the claims.
[0027] Furthermore, in order to provide a concise description of exemplary embodiments, all features of an actual implementation can not be described (i.e., those unrelated to the best mode of practicing the present application currently being considered, or those unrelated to enabling the present application).
[0028] Finally, it should be noted that the above-mentioned embodiments are only used to illustrate the technical solutions of the present application, and not to limit the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the essence and scope of the technical solutions of the present application.
Claims
1. A pickling installation for a sheet bar continuous rolling process, comprising a pickling bath (1), characterized in that: The top of the right side of the pickling tank (1) is sequentially provided with a first nozzle group (2), a first brush roller group (3), a second nozzle group (4), a second brush roller group (5), a third nozzle group (6), a feeding roller group (7) and a rinsing tank (8) from left to right, the bottom of the back of the pickling tank (1) and the rinsing tank (8) is communicated with a first pump (9), one side of the first pump (9) is communicated with a discharge pipe (10), one side of the discharge pipe (10) is communicated with a spray head (11), one side of the first nozzle group (2), the second nozzle group (4) and the third nozzle group (6) is communicated with a drain pipe (14), one side of the drain pipe (14) is communicated with a second pump (13), one side of the second pump (13) is communicated with a shell (12).
2. A pickling installation for a sheet bar continuous rolling process according to claim 1, characterized in that: The first brush roller group (3), the second brush roller group (5) and the feeding roller group (7) all comprise an upper roller (15), one side of the upper roller (15) is movably connected with a fixed plate (19), one side of the fixed plate (19) is fixedly connected with a double-shaft motor (16), one side of the double-shaft motor (16) is fixedly connected with the upper roller (15), the other side of the double-shaft motor (16) is fixedly connected with a driving gear (17), one side of the driving gear (17) is engaged with a driven gear (18), one side of the driven gear (18) is fixedly connected with a lower roller (20).
3. A pickling installation for a sheet bar continuous rolling process according to claim 1, characterized in that: The left side of the shell (12) is fixedly connected with the pickling tank (1), the right side of the shell (12) is fixedly connected with the rinsing tank (8), and the back of the shell (12) is inserted with a filter plate (21).
4. A pickling installation for a sheet bar continuous rolling process according to claim 1, characterized in that: The bottom of the front of the pickling tank (1) and the rinsing tank (8) is communicated with a fixed pipe, and one side of the fixed pipe is movably connected with a control valve.
5. A pickling installation for a sheet bar continuous rolling process according to claim 2, characterized in that: The back of the fixed plate (19) is movably connected with the lower roller (20) through a bearing, and the front of the fixed plate (19) is provided with a movable hole. The top of the right side of the pickling tank (1) is sequentially provided with a first nozzle group (2), a first brush roller group (3), a second nozzle group (4), a second brush roller group (5), a third nozzle group (6), a feeding roller group (7) and a rinsing tank (8) from left to right, the bottom of the back of the pickling tank (1) and the rinsing tank (8) is communicated with a first pump (9), one side of the first pump (9) is communicated with a discharge pipe (10), one side of the discharge pipe (10) is communicated with a spray head (11), one side of the first nozzle group (2), the second nozzle group (4) and the third nozzle group (6) is communicated with a drain pipe (14), one side of the drain pipe (14) is communicated with a second pump (13), one side of the second pump (13) is communicated with a shell (12).