A phosphorus removal device for cold-rolled steel strip
By combining a descaling module and a friction module, and using pickling solution and brushes to remove the oxide layer on the surface of cold-rolled strip steel, the problem of low descaling efficiency in existing technologies is solved, and a highly efficient and clean descaling effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LISHUI HUATE STEEL STRIP CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-26
AI Technical Summary
Existing technologies are insufficient to efficiently remove the thick oxide layer on the surface of cold-rolled strip steel, which affects surface finish and the quality of subsequent processing.
The descaling module is combined with a friction module. First, the oxide layer is removed with pickling solution, and then the residue is removed by friction with upper and lower brushes. The strip steel is fixed with rubber clamping parts to prevent movement, and the pickling solution is collected through a filter drawer to prevent contamination.
It improves dephosphorization efficiency, ensures clean strip surface, prevents pickling solution contamination, extends acid solution service life, and is adaptable to strips of different thicknesses.
Smart Images
Figure CN224406068U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a dephosphorization device for cold-rolled strip steel. Background Technology
[0002] Strip steel is a narrow and long steel plate produced by various steel rolling enterprises to meet the needs of different industrial sectors for the industrialized production of various metal or mechanical products. Strip steel is also known as steel strip, with a width of less than 1300mm and a length that varies slightly depending on the size of each coil.
[0003] Phosphorus in steel usually exists in the form of iron oxide scale, which is formed during hot rolling. Its main components include FeO, Fe3O4, and Fe2O3. The presence of iron oxide scale affects the surface finish and smoothness of cold-rolled strip steel, leading to surface roughness or defects. Furthermore, in subsequent processing steps such as pickling, galvanizing, and coating, iron oxide scale may cause adverse reactions or hinder uniform processing, affecting the quality of the final product. Therefore, it is necessary to dephosphorize cold-rolled strip steel. Common dephosphorization methods include using acid solutions to dissolve the oxide layer on the surface of the strip steel. However, for thick oxide layers, the action of dephosphorizing solution alone may not be able to completely clean them. Therefore, how to improve cleaning efficiency and improve the surface quality of strip steel has become an urgent problem to be solved by those skilled in the art. Summary of the Invention
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a cold-rolled strip descaling device that uses the movement of the strip so that the surface of the strip after passing through the descaling module can be rubbed by upper and lower brushes, thereby assisting in the removal of the thick oxide layer.
[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a strip steel, a workbench, a placement module and a descaling module located on the workbench, the strip steel being located between the placement module and the descaling module, and a liquid storage tank being provided below the strip steel on the workbench. The feature is that it further includes a friction module located behind the descaling module, the friction module including an upper brush and a lower brush located on the upper and lower sides of the strip steel, the placement module including a front support roller, a rear support roller, a front mounting seat and a rear mounting seat for inserting the front and rear support rollers, the number of front and rear mounting seats being two and located on the left and right sides of the front and rear support rollers respectively, a front clamping member slidingly mounted above each front mounting seat, and a rear clamping member slidingly mounted above each rear mounting seat.
[0006] The present invention is further configured to include a filter drawer located inside the workbench, wherein the left and right sides of the filter drawer are bolted to the workbench, and the filter drawer has several through holes communicating with the liquid storage tank.
[0007] The present invention is further configured such that each of the through holes is a frustum-shaped structure with an upper diameter smaller than that of the lower diameter.
[0008] The present invention is further configured such that both the front clamping member and the rear clamping member are made of rubber.
[0009] The present invention is further configured such that: each of the front clamping members includes an insertion section inserted on the front and rear sides of the corresponding front mounting seat; each of the front mounting seats is provided with an adjustment groove corresponding to each insertion section; each of the front mounting seats is provided with a plurality of insertion holes along the vertical direction; each of the insertion sections is provided with a screw hole corresponding to one of the insertion holes; and each of the rear clamping members has the same shape and size as the front clamping members.
[0010] The present invention is further configured such that: the friction module also includes a first plate for mounting the upper brush, a second plate for mounting the lower brush, a second mounting bracket for mounting the first plate and the second plate, and an adjustment component for driving the first plate and the second plate to move closer to each other or further apart.
[0011] The present invention is further configured such that: the first plate and the second plate have the same shape and size, and adjustment blocks are integrally formed on both the left and right sides of the first plate. The adjustment assembly includes a left screw, a right screw, a left wheel located at the top of the left screw, a right wheel located at the top of the right screw, a motor, and a belt for transmission between the left wheel and the right wheel. The left screw and the right screw are respectively rotatably mounted on the left and right sides of the second mounting bracket. Each adjustment block is threadedly engaged with the corresponding screw. The motor is fixed to the left wheel or the right wheel.
[0012] The present invention is further configured such that: the dephosphorization module includes a first mounting frame, the top of the first mounting frame is provided with a liquid storage chamber and the first mounting frame is located on the top of the liquid storage chamber and is detachably mounted with a cover; the first mounting frame is provided above the strip steel with a plurality of nozzles communicating with the liquid storage chamber; the water pump includes a first pipe communicating with the liquid storage tank and a second pipe communicating with the liquid storage chamber.
[0013] The present invention is further configured such that: the dephosphorization module also includes a water pump, the water pump including a first pipe communicating with the storage tank and a second pipe communicating with the storage chamber.
[0014] By adopting the above technical solutions, 1. the descaling module and the friction module are used in combination, so that the strip steel first removes the oxide layer by pickling, and then the upper and lower brushes of the friction module further remove the residue, thereby improving the descaling efficiency; 2. since the pickling liquid after reaching the surface of the strip steel can enter the storage tank downwards, it is easy to collect the dripping pickling liquid and prevent contamination; 3. since the front clamping part and the rear clamping part are slidably installed on the front and rear mounting seats respectively, the front and rear clamping parts can be fixed by moving them downwards, so that the top corners of the strip steel located above the placement module can be pressed, so that the strip steel will not move during the process of pickling liquid dripping downwards and the upper and lower brushes of the friction module contacting and wiping, and can be stably positioned on the front and rear support rollers. Attached Figure Description
[0015] 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 these drawings without creative effort.
[0016] Figure 1 This is an assembly drawing illustrating a specific embodiment of the present utility model;
[0017] Figure 2 This is an exploded view of the present invention;
[0018] Figure 3 This is a cross-sectional view of the present invention;
[0019] Figure 4 for Figure 2 Enlarged view of A in the middle;
[0020] Figure 5 for Figure 2 Enlarged view of B in the middle;
[0021] Figure 6 for Figure 3 Enlarged view of C in the middle;
[0022] Figure 7 for Figure 3 Enlarged view of D;
[0023] Figure 8 This is a cross-sectional view of Example 2.
[0024] In the diagram: 1 - strip steel;
[0025] 2-Workbench, 21-Liquid Storage Tank;
[0026] 3-Placement module, 31-Front support roller, 32-Rear support roller, 33-Front mounting base, 331-Front clamping component, 3311-Insertion section, 33111-Screw hole, 332-Insertion hole, 333-Adjustment groove, 34-Rear mounting base, 341-Rear clamping component;
[0027] 4-Dephosphorization module, 41-First mounting bracket, 411-Liquid storage chamber, 412-Cover, 413-Nozzle, 42-Water pump, 421-First pipe, 422-Second pipe;
[0028] 5-Friction module, 51-Upper brush, 52-Lower brush, 53-First plate, 531-Adjusting block, 54-Second plate, 55-Second mounting bracket, 56-Adjusting assembly, 561-Left screw, 5611-Left wheel, 5612-Positive thread section, 5613-Negative thread section, 562-Right screw, 5621-Right wheel, 563-Motor, 564-Belt;
[0029] 6-Filter drawer, 61-Through hole. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] Example 1:
[0032] like Figures 1-7As shown, this utility model discloses a descaling device for cold-rolled strip steel, including strip steel 1, workbench 2, placement module 3 located on workbench 2, and descaling module 4. The strip steel 1 is located between placement module 3 and descaling module 4. A storage tank 21 is provided below the strip steel 1 on workbench 2. Since there is an oxide layer on the surface of the cold-rolled strip steel 1, in order to effectively remove these oxides (i.e., descaling), the strip steel 1 is placed on placement module 3 of workbench 2. At this time, descaling module 4 can remove pickling solution (such as sulfuric acid, salt) Acids (such as a mixture of hydrofluoric acid and nitric acid) are placed on the surface of the cold-rolled strip 1. The pickling solution can effectively remove oxides (this is prior art and will not be described in detail here). It also includes a friction module 5 located behind the descaling module 4. The friction module 5 includes an upper brush 51 and a lower brush 52 located on the upper and lower sides of the strip 1. The placement module 3 includes a front support roller 31, a rear support roller 32, a front mounting seat 33, and a rear mounting seat 34 for placing the front support roller 31 and the rear support roller 32. The front mounting seat 3... 3. Both the front support roller 31 and the rear support roller 32 are in pairs, located on the left and right sides respectively. A front clamping member 331 is slidably installed above each of the front support rollers 33 and a rear clamping member 341 is slidably installed above each of the rear support rollers 34. 1. The descaling module 4 and the friction module 5 are used in combination, so that the strip steel 1 first removes the oxide layer by pickling, and then the upper and lower brushes 52 of the friction module 5 further remove the residue, thereby improving the descaling efficiency; 2. Because the pickling solution after reaching the surface of the strip steel 1 can... 3. Since the front clamping member 331 and the rear clamping member 341 are slidably installed on the front and rear mounting bases 34 respectively, the front and rear clamping members 341 can be fixed by moving down, so that the top corners of the strip steel 1 located above the placement module 3 can be pressed, so that the strip steel 1 will not move during the process of the pickling liquid dripping down and the upper and lower brushes 52 of the friction module 5 contacting and wiping, and can be stably positioned on the front and rear support rollers 32.
[0033] The system also includes a filter drawer 6 located inside the workbench 2. Both sides of the filter drawer 6 are bolted to the workbench 2. The filter drawer 6 has several through holes 61 that communicate with the liquid storage tank 21. During the reaction with the pickling solution and the brushing of the strip steel 1 by the upper and lower brushes 52, the oxides will move downwards. At this time, the filter drawer 6 can intercept solid impurities (such as iron oxide scale fragments) in the pickling solution, thus extending the service life of the acid solution. Since both ends of the filter drawer 6 are connected to the workbench 2 by bolts, the filter drawer 6 can be cleaned or replaced by removing the bolts.
[0034] Preferably, each of the through holes 61 is arranged in the shape of a frustum with a smaller diameter at the top than at the bottom. Since the diameter at the top of each through hole 61 is the smallest, it can more effectively intercept solid impurities. At the same time, when the pickling liquid above each through hole 61 reaches the bottom of the through hole 61 with a larger diameter, it can flow downward more smoothly and enter the liquid storage chamber 411.
[0035] Preferably, both the front clamping member 331 and the rear clamping member 341 are made of rubber. The rubber material has a certain degree of cushioning and flexibility, which avoids scratching the surface of the strip steel 1 during the clamping of the top corner of the strip steel 1, and the friction between the rubber and the strip steel 1 helps to prevent the strip steel 1 from sliding.
[0036] Each of the aforementioned front clamping members 331 includes insertion sections 3311 inserted into the front and rear sides of the corresponding front mounting base 33. Each of the aforementioned front mounting bases 33 is provided with an adjustment groove 333 corresponding to each insertion section 3311. Each of the aforementioned front mounting bases 33 is provided with a plurality of insertion holes 332 along the vertical direction. Each of the aforementioned insertion sections 3311 is provided with a screw hole 33111 corresponding to one of the insertion holes 332. Each of the aforementioned rear clamping members 341 has the same shape and size as the front clamping members 331, and is secured by the insertion sections 3311. Bolts (not shown in the figure) that are compatible with each screw hole 33111 are inserted into insertion holes 332 at different heights and then cooperate with screw holes 33111 located at the same height as the insertion hole 332. This allows the front clamping member 331 to flexibly adjust the clamping height according to the different thicknesses of the strip steel 1 and reach the upper surface of the strip steel 1. Similarly, the rear clamping member 341 can also reach the upper surface of the strip steel 1, so that both can clamp the strip steel 1. In addition, since the front and rear clamping members 341 have the same structure, they are easy to manufacture, install and replace uniformly.
[0037] In addition, the friction module 5 also includes a first plate 53 for mounting the upper brush 51, a second plate 54 for mounting the lower brush 52, a second mounting bracket 55 for mounting the first plate 53 and the second plate 54, and an adjustment component 56 for moving the first plate 53 and the second plate 54 closer to each other or further apart. The upper brush 51 is rotatably connected to the first plate 53, and the lower brush 52 is rotatably connected to the second plate 54. The distance between the upper and lower brushes 52 is controlled by the adjustment component 56 to adapt to strip steel 1 with different thicknesses or oxide layer thicknesses. The upper and lower brushes 52 are installed in independent plates for easy replacement and maintenance.
[0038] The first plate 53 and the second plate 54 are identical in shape and size. Adjustment blocks 531 are integrally formed on both the left and right sides of the first plate 53. The adjustment assembly 56 includes a left screw 561, a right screw 562, a left wheel 5611 located at the top of the left screw 561, a right wheel 5621 located at the top of the right screw 562, a motor 563, and a belt 564 that transmits power between the left wheel 5611 and the right wheel 5621. The left screw 561 includes a positive thread section 5612 and a negative thread section 5613, and is rotatably mounted on the left and right sides of the second mounting bracket 55, respectively, along with the right screw 562. The left screw 561 and the right screw 562 are identical in shape and size. Each adjustment block 531 is respectively connected to the left and right sides of the second mounting bracket 55. The screw is threaded on the upper part (positive thread section 5612) of the corresponding screw, and the adjusting block 531 of the second plate 54 is threaded on the lower part (reverse thread section 5613) of the corresponding screw. The motor 563 is fixed to the left wheel 5611 or the right wheel 5621. By starting the motor 563, the left wheel 5611 or the right wheel 5621 is driven to rotate. At this time, the other wheel can rotate under the force of the belt 564. The synchronous rotation of the left and right wheels 5621 can make the left and right screws 562 rotate synchronously, so that the first plate 53 and the second plate 54 can be synchronously adjusted in height along the left and right screws 562, so that the upper and lower brushes 52 are located on the upper and lower surfaces of the strip steel 1 respectively and perform surface friction brushing.
[0039] Additionally, it is worth noting that, as shown in the attached diagram, the circumferential direction of each adjusting block 531 will abut against the inner wall of the second mounting bracket 55. Therefore, during the rotation of the left screw 561 and the right screw 562, each adjusting block 531 can only move up and down and cannot rotate.
[0040] The dephosphorization module 4 includes a first mounting frame 41. The top of the first mounting frame 41 is provided with a liquid storage chamber 411, and a cover 412 is detachably installed on the top of the liquid storage chamber 411. The first mounting frame 41 is located above the strip steel 1 and is provided with a plurality of nozzles 413 that communicate with the liquid storage chamber 411. The detachable cover 412 is designed to facilitate regular cleaning or replacement of acid. In addition, a sealing ring (not shown in the figure) can be installed between the cover 412 and the first mounting frame 41 to reduce the occurrence of pickling solution flowing out of the first mounting frame 41.
[0041] Example 2:
[0042] The structure of Example 2 is basically the same as that of Example 1, except that:
[0043] like Figure 8As shown, the dephosphorization module 4 also includes a water pump 42 (the working principle of which is existing technology and will not be described in detail here). The water pump 42 includes a first pipe 421 connected to the storage tank 21 and a second pipe 422 connected to the storage chamber 411. Activating the water pump 42 allows each nozzle 413 structure to evenly cover the surface of the strip steel 1, causing the pickling liquid in the storage chamber 411 to flow downwards to the surface of the strip steel 1, thereby improving the pickling efficiency. Since oxide impurities are blocked by the filter drawer 6 during the downward flow into the storage tank 21, only the pickling liquid can flow downwards and then re-enter the storage chamber 411 through the first pipe 421 to achieve recycling.
[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A descaling device for cold-rolled strip steel, comprising strip steel, a workbench, a placement module and a descaling module located on the workbench, wherein the strip steel is located between the placement module and the descaling module, and a storage tank is provided below the strip steel on the workbench, characterized in that: It also includes a friction module located behind the descaling module. The friction module includes an upper brush and a lower brush located on the upper and lower sides of the strip. The placement module includes a front support roller, a rear support roller, a front mounting seat and a rear mounting seat for placing the front support roller and the rear support roller. There are two front mounting seats and two rear mounting seats, which are located on the left and right sides of the front support roller and the rear support roller, respectively. A front clamping member is slidably installed above each front mounting seat, and a rear clamping member is slidably installed above each rear mounting seat.
2. The descaling device for cold-rolled strip steel according to claim 1, characterized in that: It also includes a filter drawer located inside the workbench, with both sides of the filter drawer bolted to the workbench, and several through holes communicating with the liquid storage tank are provided through the filter drawer.
3. The descaling device for cold-rolled strip steel according to claim 2, characterized in that: Each of the aforementioned through holes is arranged in a frustum shape with the upper diameter smaller than the lower diameter.
4. The descaling device for cold-rolled strip steel according to claim 1, characterized in that: Both the front and rear clamping parts are made of rubber.
5. The descaling device for cold-rolled strip steel according to claim 4, characterized in that: Each of the aforementioned front clamping components includes insertion sections inserted on the front and rear sides of the corresponding front mounting base. Each of the aforementioned front mounting bases is provided with an adjustment groove corresponding to each insertion section. Each of the aforementioned front mounting bases is provided with a plurality of insertion holes along the vertical direction. Each of the aforementioned insertion sections is provided with a screw hole corresponding to one of the insertion holes. Each of the aforementioned rear clamping components has the same shape and size as the front clamping components.
6. The descaling device for cold-rolled strip steel according to claim 1, characterized in that: The friction module also includes a first plate for mounting the upper brush, a second plate for mounting the lower brush, a second mounting bracket for mounting the first plate and the second plate, and an adjustment component for moving the first plate and the second plate closer to or further apart from each other.
7. A descaling device for cold-rolled strip steel according to claim 6, characterized in that: The first plate and the second plate are the same in shape and size. Adjustment blocks are integrally formed on both the left and right sides of the first plate. The adjustment assembly includes a left screw, a right screw, a left wheel located at the top of the left screw, a right wheel located at the top of the right screw, a motor, and a belt between the left wheel and the right wheel. The left screw and the right screw are rotatably mounted on the left and right sides of the second mounting bracket, respectively. Each adjustment block is threadedly engaged with the corresponding screw. The motor is fixed to the left wheel or the right wheel.
8. The descaling device for cold-rolled strip steel according to claim 1, characterized in that: The dephosphorization module also includes a water pump, which includes a first pipe connected to a storage tank and a second pipe connected to a storage chamber.
9. A descaling device for cold-rolled strip steel according to claim 8, characterized in that: The dephosphorization module includes a first mounting frame, a liquid storage chamber is provided on the top of the first mounting frame, and a cover is detachably installed on the top of the liquid storage chamber. The first mounting frame is provided above the strip steel with a plurality of nozzles that communicate with the liquid storage chamber. The water pump includes a first pipe that communicates with the liquid storage tank and a second pipe that communicates with the liquid storage chamber.