Withdrawal and straightening roller brush descaling machine

Abstract

The utility model discloses a withdrawal and straightening roller brush descaling machine, which comprises a withdrawal and straightening assembly used for stretching and bending strip steel, the withdrawal and straightening assembly comprises an inlet tension device, an outlet tension device, at least one group of bending rollers, and at least one group of bending rollers arranged between the inlet tension device and the outlet tension device, the bending device is used for applying bending stress to strip steel to crush oxide skin on the surface of the strip steel; the descaling machine further comprises at least one group of roller brush devices. By additionally arranging the roller brush set and enabling the strip steel to be in a stretching state when the strip steel passes through the roller brush device, the stretching state of the strip steel is utilized, so that oxide skin cracks which are fractured in the bending process are opened, or the combination between the oxide skin and a base body is looser, the oxide skin can be more effectively removed, the overall scale breaking and removing efficiency is improved, and the service life of the scale breaking and removing device is prolonged. And the pickling time is shortened, so that the pressure of subsequent acid liquor treatment and the environmental protection cost can be reduced, and better substrate conditions are provided for subsequent procedures such as cold rolling or coating and plating.

Description

Technical Field

[0001] This utility model relates to the field of descaling equipment technology, and in particular to a straightening roller brush descaling machine. Background Technology

[0002] Currently, in the pickling production line of hot-rolled strip steel, in order to improve pickling efficiency, the strip steel is usually subjected to stretching and straightening treatment before entering the pickling tank for pickling. This treatment has two main purposes: first, to use mechanical force to break and partially peel off the iron oxide scale on the surface of the strip steel, the so-called "scale breaking"; and second, to improve the strip steel's shape, such as eliminating defects like waviness, warping, and camber, and to eliminate yield plateaus, thereby improving the mechanical properties of the strip steel.

[0003] In existing technical solutions, descaling and straightening units are commonly used equipment in hot-rolled strip pickling production lines. However, existing descaling and straightening units are usually not equipped with dedicated roller brush devices, which prevents them from fully utilizing their descaling and descaling functions. Specifically, some of the oxide scale that is broken by bending and stretching may still adhere to the surface of the strip and not be completely removed, which will affect the effect and efficiency of subsequent pickling. If the steel plate is cleaned by roller brushes while under tension, it will be more conducive to the removal of oxide scale. Therefore, there is an urgent need for a descaling and straightening roller brush machine. Utility Model Content

[0004] The purpose of this utility model is to solve the defects existing in the prior art by proposing a tension straightening roller brush descaling machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A strip straightening roller descaling machine includes a straightening assembly for applying tension and bending to a strip, the straightening assembly comprising:

[0007] An inlet tension device is used to apply inlet tension to the incoming strip.

[0008] An outlet tension device is used to apply outlet tension to the strip so that the strip is in a tensile state between the inlet tension device and the outlet tension device.

[0009] At least one set of bending rollers is disposed between the inlet tension device and the outlet tension device for applying bending stress to the strip to break the oxide scale on its surface;

[0010] The descaling machine also includes:

[0011] At least one set of roller brush devices is arranged to brush the upper and lower surfaces of the strip when the strip passes through the tensioning assembly and is in the tensile state.

[0012] The frame is used to fix the tension straightening components;

[0013] A brush roller drive device is used to drive the brush roller device to rotate.

[0014] Furthermore, the roller brush device includes an upper roller brush and a lower roller brush, which respectively contact the upper and lower surfaces of the corresponding strip steel, and the roller brush of the roller brush device is a steel wire brush.

[0015] Furthermore, the roller brush device is provided with a support roller on the other side of the strip steel to support the strip steel and maintain a certain brushing pressure on the strip steel.

[0016] Furthermore, a support roller cylinder is provided below the support roller to drive the support roller to move up and down to adjust the washing pressure.

[0017] Furthermore, the bending roller includes an upper bending roller, a lower bending roller, a locking cylinder for adjusting and fixing the position of the upper bending roller, and a lower bending roller adjusting lift for adjusting and fixing the position of the lower bending roller.

[0018] Furthermore, the frame is also used to install and fix guide rollers, and the upper bending roller, the locking cylinder, the lower bending roller adjusting lift, the lower bending roller, the upper bending roller, and the lower bending roller can move up and down along the slide plate on the frame to adjust the bending amount of the strip.

[0019] Furthermore, the roller brush device is positioned after a set of bending rollers along the travel direction of the strip.

[0020] Furthermore, the inlet tension device and the outlet tension device control the tension and elongation of the strip steel through the speed difference.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] By adding roller brush sets and keeping the strip in a stretched state as it passes through the roller brush device, the tension of the strip opens up the cracks in the oxide scale that have broken during bending, or loosens the bond between the oxide scale and the substrate. At this time, brushing the surface of the strip with roller brushes such as wire brushes can more effectively remove the oxide scale, improving the overall descaling efficiency. Since the oxide scale on the surface of the strip has been more thoroughly removed before entering the pickling tank, the acid can act on the strip substrate more quickly and directly in the subsequent pickling process, thereby significantly improving pickling efficiency, shortening pickling time, reducing acid consumption, and increasing pickling efficiency. This results in a corresponding reduction in the amount of waste acid and pollutants generated, which can alleviate the pressure and environmental costs of subsequent acid treatment and obtain a cleaner strip surface, providing better substrate conditions for subsequent cold rolling or coating processes. Attached Figure Description

[0023] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0024] Figure 1 This is one of the overall structural schematic diagrams of the straightening roller brush descaling machine proposed in this utility model;

[0025] Figure 2 This is the second schematic diagram of the overall structure of the straightening roller brush descaling machine proposed in this utility model;

[0026] Figure 3 This is the third schematic diagram of the overall structure of the straightening roller brush descaling machine proposed in this utility model.

[0027] In the diagram: 1. Inlet tension device; 2. Guide roller; 3. Upper bending roller; 4. Locking cylinder; 5. Roller brush device; 6. Support roller; 7. Frame; 8. Outlet tension device; 9. Brush roller drive device; 10. Support roller cylinder; 11. Lower bending roller adjustment lift; 12. Lower bending roller. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "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 utility model 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 utility model.

[0030] Reference Figure 1-3 A strip straightening roller descaling machine, comprising a straightening assembly for applying tension and bending to the strip, the straightening assembly including:

[0031] Inlet tension device 1, used to apply inlet tension to the incoming strip;

[0032] The outlet tension device 8 is used to apply outlet tension to the strip so that the strip is in a tensile state between the inlet tension device 1 and the outlet tension device 8.

[0033] At least one set of bending rollers is disposed between the inlet tension device 1 and the outlet tension device 8 for applying bending stress to the strip steel to break the oxide scale on its surface. The descaling machine also includes:

[0034] At least one set of roller brush devices 5 are arranged to brush the upper and lower surfaces of the strip when the strip passes through the tensioning assembly and is in the tensioned state.

[0035] The frame 7 is used to fix a tensioning assembly that includes at least the roller brush device 5 and the bending roller;

[0036] A brush roller drive device 9 is used to drive the brush roller device 5 to rotate;

[0037] First, the inlet tension device 1 and the outlet tension device 8, located at the front and rear of the strip's travel path, work together to apply a tensile force to the strip, so that the strip forms a stable tensile state section between the two tension devices. In the tensile state, the strip passes through at least one set of bending rollers in sequence. The bending rollers apply bending stress to the strip in the tensile state, initially breaking the iron oxide scale attached to the surface of the strip.

[0038] In a preferred embodiment, at least one set of roller brush devices 5 is also provided. The roller brush devices 5 are specifically arranged on the stretching path of the strip steel to brush the upper and lower surfaces of the strip steel while the strip steel is still in a stretched state and after the oxide scale on its surface has been initially broken by the bending roller, thereby efficiently removing the oxide scale. Brushing in a stretched state can remove the oxide scale more effectively because stretching helps the oxide scale cracks to open, making it easier to brush off.

[0039] The roller brush device 5 includes an upper roller brush and a lower roller brush, which respectively contact the upper and lower surfaces of the corresponding strip steel. The roller brush of the roller brush device 5 is a steel wire brush. A support roller 6 is provided on the other side of the strip steel to support the strip steel and maintain a certain brushing pressure on the strip steel. The roller brush device 5 is arranged after a set of bending rollers along the traveling direction of the strip steel. In a specific embodiment, the roller brush device 5 may include an upper roller brush and a lower roller brush corresponding to the upper and lower surfaces of the strip steel respectively, so as to achieve simultaneous cleaning of the two main surfaces of the strip steel. The descaling machine is also equipped with a brush roller drive device 9 to drive the roller brush to rotate and remove oxide scale by mechanical brushing force. The brush roller is preferably made of steel wire brush material to ensure sufficient hardness and wear resistance to effectively scrape off hard oxide scale. On the traveling path of the strip steel, one or more sets of roller brush devices 5 are arranged after the bending rollers to ensure that the strip steel is brushed after preliminary descaling, so as to improve the overall descaling efficiency.

[0040] Below the support roller 6 is a support roller cylinder 10 that cooperates with it, which is used to drive the support roller 6 to move up and down to adjust the brushing pressure. In a specific embodiment, the support roller 6 is driven to move up and down by the support roller cylinder 10 and other driving mechanisms, so as to conveniently adjust and control the brushing pressure applied to the strip by the roller brush, and ensure that the strip substrate is not damaged while effectively removing scale.

[0041] The bending roller includes an upper bending roller 3, a lower bending roller 12, a locking cylinder 4 for adjusting and fixing the position of the upper bending roller 3, and a lower bending roller adjusting lift 11 for adjusting and fixing the position of the lower bending roller 12. In a specific embodiment, the bending roller is composed of an upper bending roller 3 and a lower bending roller 12, which are used to cause the strip steel to bend and deform, and control the bending amount of the strip steel to adapt to strip steel of different thicknesses and materials and achieve the best scale breaking effect. The upper bending roller 3 can be adjusted and finally fixed and locked by the locking cylinder 4. Similarly, the lower bending roller 12 is equipped with a lower bending roller adjusting lift 11 for adjusting its vertical position and fixing it to ensure that the bending roller group can apply appropriate bending stress to the strip steel.

[0042] The frame 7 is also used to install and fix the guide roller 2, and the upper bending roller 3, the locking cylinder 4, the lower bending roller adjusting lift 11, the lower bending roller 12, and the upper bending roller 3 and the lower bending roller 12 can move up and down along the slide plate on the frame 7 to adjust the bending amount of the strip. The inlet tension device 1 and the outlet tension device 8 control the tension and elongation of the strip through the speed difference. In a specific embodiment, all the key components of the entire tensioning roller brush descaling machine, including the inlet tension device 1, the outlet tension device 8, the bending roller group, the roller brush device 5 and its auxiliary mechanisms, are all stably installed on a unified frame 7 to form an integrated processing unit. The tension of the strip throughout the process is achieved by controlling the speed difference between the drive motors of the inlet tension device 1 and the outlet tension device 8.

[0043] In a preferred embodiment, the strip is first subjected to a stable tension under the action of the inlet and outlet tension devices 8, entering a stretched state. Then, in this stretched state, the strip passes sequentially through guide rollers 2 and enters an adjustable bending roller group consisting of an upper bending roller 3 and a lower bending roller 12. Under the combined action of the tension generated by the inlet tensioner and the subsequently installed outlet tensioner, the strip simultaneously bears tensile and bending stresses as it passes through the bending roller group, causing cracks and loosening of the oxide scale on its surface. After this initial descaling by the bending roller group, the strip, still in a stretched state, then enters a brush roller group. Driven by a brush roller drive device 9, the brush rollers rotate at high speed, simultaneously and powerfully brushing the upper and lower surfaces, effectively removing the loosened oxide scale. Throughout this process, the stretched state of the strip not only improves the strip shape and eliminates some internal stress but also enhances the effects of bending descaling and roller brush descaling. This combination of tension straightening and roller brush descaling under stretched conditions significantly improves the oxide scale removal efficiency, thereby reducing the burden on subsequent pickling processes, reducing acid consumption, saving energy, and lowering environmental treatment costs.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A strip straightening roller descaling machine, the descaling machine comprising a straightening assembly for applying tension and bending to a strip, the straightening assembly comprising: An inlet tension device (1) is used to apply inlet tension to the incoming strip. The outlet tension device (8) is used to apply outlet tension to the strip so that the strip is in a tensile state between the inlet tension device (1) and the outlet tension device (8); At least one set of bending rollers, disposed between the inlet tension device (1) and the outlet tension device (8), is used to apply bending stress to the strip to break the oxide scale on its surface, characterized in that the descaling machine further includes: At least one set of roller brush devices (5) are arranged to brush the upper and lower surfaces of the strip when the strip passes through the tensioning assembly and is in the tensioned state. Frame (7) is used to fix the tension straightening assembly; A brush roller drive device (9) is used to drive the roller brush device (5) to rotate.

2. The tension roller brush descaling machine according to claim 1, characterized in that, The roller brush device (5) includes an upper roller brush and a lower roller brush, which respectively contact the upper and lower surfaces of the corresponding strip steel. The roller brush of the roller brush device (5) is a steel wire brush.

3. The straightening roller brush descaling machine according to claim 2, characterized in that, The roller brush device (5) is provided with a support roller (6) on the other side of the strip steel, which is used to support the strip steel and make the roller brush device (5) maintain a certain brushing pressure on the strip steel.

4. The tension roller brush descaling machine according to claim 3, characterized in that, Below the support roller (6) is a support roller cylinder (10) that cooperates with it, which is used to drive the support roller (6) to move up and down to adjust the brushing pressure.

5. The straightening roller brush descaling machine according to claim 4, characterized in that, The bending roller includes an upper bending roller (3), a lower bending roller (12), a locking cylinder (4) for adjusting and fixing the position of the upper bending roller (3), and a lower bending roller adjusting lift (11) for adjusting and fixing the position of the lower bending roller (12).

6. The straightening roller brush descaling machine according to claim 5, characterized in that, The frame (7) is also used to install and fix guide rollers (2), and the upper bending roller (3), the locking cylinder (4), the lower bending roller adjusting lift (11), the lower bending roller (12), and the upper bending roller (3) and the lower bending roller (12) can move up and down along the slide plate on the frame (7) to adjust the bending amount of the strip.

7. The straightening roller brush descaling machine according to claim 6, characterized in that, The roller brush device (5) is positioned after a set of bending rollers along the direction of travel of the strip.

8. The straightening roller brush descaling machine according to claim 1, characterized in that, The inlet tension device (1) and outlet tension device (8) control the tension and elongation of the strip steel through the speed difference.

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