Pickling surface control device for stainless steel composite plate blank

Abstract

The utility model discloses a stainless steel composite slab pickling surface control device which comprises a pickling box, scrubbing mechanisms and scraping mechanisms, a pair of scraping mechanisms are symmetrically arranged on the two sides of a stainless steel plate, and a pair of scrubbing mechanisms are symmetrically arranged on the two sides of the stainless steel plate. Box bodies are arranged on the outer walls of the two sides of the pickling box, and filter plates and pipelines are arranged in the box bodies; the brushing mechanism comprises a brushing roller, a collecting mechanism and a reloading mechanism. The stainless steel surface cleaning device is provided with the brushing mechanism and the scraping mechanism, the surface of a stainless steel plate can be scraped through the scraping mechanism, the scraped oxide skin is sucked and transferred through the suction pipe, the content of oxidation residues in acid liquor is reduced, and the stainless steel surface is subjected to secondary brushing through the brushing mechanism; and meanwhile, a replaceable brush block is arranged on a brushing roller in the brushing mechanism, the brushing quality can be guaranteed by replacing the brush block, the contact faces of the brushing mechanism and the scraping mechanism with the stainless steel surface are planes, and the stainless steel plate roll is not prone to deformation in the oxidizing slag removing process.

Description

Technical Field

[0001] The utility model belongs to the technical field of stainless steel sheet coil pickling, and particularly relates to a pickling surface control device for a stainless steel composite slab. Background Art

[0002] The production process of stainless steel sheet coils includes annealing, descaling, pickling, and cleaning. During the pickling process, the stainless steel sheet coils are usually immersed in acid solution for transmission, and the residual scale on the surface of the stainless steel sheet coils is removed by the acid solution.

[0003] After retrieval, in the prior art, a stainless steel sheet coil pickling tank with the publication number of CN 219409918 U includes a tank body, a sheet coil depth-fixing roller rod, a roller rod lifting control device, and a liquid level measuring device. The depth of the acid solution is measured by the liquid level measuring device, and the depth of the sheet coil in the acid solution is controlled by the sheet coil depth-fixing roller rod, so that the soaking time of the stainless steel sheet coil in the acid solution is controllable, greatly reducing the possibility of over-pickling and under-pickling. Moreover, the spiral protrusions on the surface of the rubber roller can also assist the rust on the surface of the sheet coil to fall off when the sheet coil passes by, enhancing the pickling effect of a single pickling tank and reducing the number of pickling tanks.

[0004] The above solution has drawbacks. First, the control of the soaking time of the stainless steel sheet coil in the acid solution should actually be determined by the transmission speed of the stainless steel sheet coil, rather than the depth of the stainless steel sheet coil in the acid solution. Second, the spiral protrusions on the surface of the rubber roller will cause uneven deformation of the stainless steel sheet coil when assisting the rust on the surface of the stainless steel sheet coil to fall off. Third, the fallen rust will stay near the stainless steel sheet and the rubber roller, which will cause the drawback of surface scratches on the stainless steel sheet coil due to being pressed into it.

[0005] After retrieval, a super-specification wide-band stainless steel pickling production line with the publication number of CN 217324327 U in the prior art includes a coil uncoiling mechanism, a straightening mechanism, a welding mechanism, an annealing mechanism, a pickling mechanism, a cleaning mechanism, a drying mechanism, and a coiling mechanism. From one end to the other end, they are successively set as a coil uncoiling mechanism, a straightening mechanism, a welding mechanism, an annealing mechanism, a pickling mechanism, a cleaning mechanism, a drying mechanism, and a coiling mechanism. The pickling mechanism includes a pickling tank, a cover plate, and a brushing mechanism. The cover plate is arranged on the top of the pickling tank. There are several brushing mechanisms arranged inside the pickling tank. Through grooves are arranged at both ends of the pickling tank for the entry and exit of the stainless steel sheet. Pressing rollers and supporting rollers are arranged on both sides of the through groove, and the pressing rollers and the supporting rollers are respectively arranged outside and inside the pickling tank. A turning roller is arranged below the supporting roller, and a brushing mechanism is arranged on one side of the turning roller. In the utility model, the acid pickling solution containing impurities such as scale around the brush roller is quickly stirred by a stirring mechanism to make it away from the area around the brush roller and the stainless steel sheet, avoiding damage to the surface of the stainless steel sheet.

[0006] Although a toggle mechanism is provided in this solution to move the oxide scale away from the brush roller and the stainless steel plate, a large amount of oxide scale residue will gradually accumulate in the acid solution over a long period of time. After being toggled, the acid solution will still flow back with the oxide residue, which is not conducive to protecting the surface quality of the stainless steel plate coil. Utility Model Content

[0007] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a stainless steel composite slab pickling surface control device. The utility model is provided with a brushing mechanism and a scraping mechanism. The scraping mechanism can scrape the surface of the stainless steel plate and transfer the scraped oxide scale through a suction pipe to reduce the content of oxidized residues in the acid solution. The stainless steel surface is then brushed for a second time by the brushing mechanism. At the same time, a replaceable brush block is provided on the brush roller in the brushing mechanism. The brushing quality can be ensured by replacing the brush block. Furthermore, the contact surfaces of the brushing mechanism and the scraping mechanism with the stainless steel surface are flat, and the stainless steel plate coil is not easily deformed during the process of removing the oxidized slag.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A stainless steel composite plate pickling surface control device comprises a pickling box, a brushing mechanism and a scraping mechanism. The scraping mechanism is provided with a pair and symmetrically arranged on both sides of the stainless steel plate, and the brushing mechanism is provided with a pair and symmetrically arranged on both sides of the stainless steel plate; a box body is provided on the outer walls of both sides of the pickling box, a filter plate and a pipeline are provided in the box body, a water suction pump is provided at one end of the pipeline, and the other end of the pipeline is connected to the pickling box; the brushing mechanism comprises a brushing roller, a collecting mechanism, and a changing mechanism.

[0010] The scraping mechanism includes a pair of fixed rollers that are fixedly connected, and one end of the fixed roller is rotatably connected to the pickling box; the fixed roller includes a sleeve, a suction pipe, a water suction pump, and a crushing roller; the sleeve is sleeved with the suction pipe, and the water suction pump is arranged at the end of the suction pipe, and the water suction pump is arranged in the box and located on one side of the filter plate; the sleeve is provided with a first scraper, and the first scraper is provided with a sleeved second scraper, the first scraper is also provided with a first fixed plate, the second scraper is provided with a second fixed plate, and the second fixed plate is provided with a hinged second guide shaft, one end of the second guide shaft passes through the first fixed plate and is slidably connected, the second guide shaft is sleeved with a fourth spring, and the fourth The spring contacts the first fixed plate and the second fixed plate; the fourth spring pushes the second scraper to slide on the first scraper; a third fixed plate is provided at one end of the sleeve, a third motor is provided on the third fixed plate, and a gear is provided at the shaft end of the third motor; a through pipe is also provided at one end of the sleeve, and the through pipe passes through the side wall of the pickling box for connecting the line; a pair of crushing rollers are provided and are arranged on the first scraper through a bearing seat, gears are provided at the ends of the crushing rollers and mesh with each other, and one pair of crushing rollers is also provided with a transmission gear meshing with the gear at the shaft end of the third motor; the crushing rollers are driven to rotate by the third motor to crush the large pieces of oxide scale scraped off by the second scraper.

[0011] A number of suction ports are provided on the straw. A first cleaning plate and a second cleaning plate are provided on the inner wall of the suction port. The first cleaning plates are fixedly connected by a first fixed shaft. The first fixed shaft is rotatably connected to the side walls of each suction port. A gear is provided at one end of the first fixed shaft. The second cleaning plates are fixedly connected by a second fixed shaft. The second fixed shaft is rotatably connected to the side wall of the suction port. A gear is provided at the end of the second fixed shaft. Control mechanisms are provided on the suction ports at both ends of the straw and are respectively used to control the rotation of the first fixed shaft and the second fixed shaft.

[0012] The control mechanism includes a Z-shaped rack, a fourth motor, a limit post, and a second rotating shaft. The second rotating shaft is rotatably connected to the side wall of the suction port. A gear is provided on the second rotating shaft. The fourth motor is fixed on the side wall of the suction port through a motor base. The end of the fourth motor shaft is connected to the second rotating shaft. A pair of Z-shaped racks are provided on the upper and lower sides of the second rotating shaft. A second through groove is provided on the Z-shaped rack. A limit post is provided in the second through groove. The limit post is fixedly connected to the side wall of the suction port. The Z-shaped rack meshes with the gear at the end of the first fixed shaft or the gear at the end of the second fixed shaft.

[0013] The scrubbing roller includes a first motor, a roller shaft, a partition plate, a fourth fixing plate, a brush block, and a locking mechanism. The two ends of the roller shaft are rotatably connected to the side wall of the pickling tank. The first motor is fixed on the side wall of the pickling tank. The output shaft of the first motor is connected to the end of the roller shaft. Eight pairs of partition plates are provided and fixedly connected to the roller shaft. The fourth fixing plates are arranged between the partition plates and fixedly connected to each other. The locking mechanism is provided on the fourth fixing plate. A number of brush blocks are provided and fixed to the fourth fixing plate through the locking mechanism.

[0014] Installation grooves and first through grooves are provided at both ends of the partition plate. A top plate and a first spring are provided in the installation groove. The first spring pushes the top plate. A first adjusting shaft is provided on the top plate.

[0015] The brush block includes a fixed seat. A flexible scrubbing part is provided on the fixed seat. The flexible scrubbing part includes felt cloth. A hook groove is provided on one side of the fixed seat.

[0016] The locking mechanism includes a fixed shell. The fixed shell is fixed on the fourth fixing plate. Symmetrically arranged wedge-shaped blocks are provided in the fixed shell. The wedge-shaped blocks are slidably connected to the fixed shell. Wedge-shaped grooves are provided on the wedge-shaped blocks. A cross plate is provided above the wedge-shaped blocks. An adjusting plate is provided on the cross plate and corresponds to the wedge-shaped groove. A fixed column is also provided on the cross plate. The fixed column passes through the fourth fixing plate and is slidably connected. A second adjusting shaft is provided at the end of the fixed column. A second spring is provided between the wedge-shaped blocks to push the wedge-shaped blocks to slide.

[0017] The bottom of the fourth fixing plate is provided with fixed first support arm and second support arm, and pin shafts are arranged at the ends of the second support arm and the first support arm; a first adjusting arm is rotatably connected to the pin shaft at the end of the second support arm, adjusting grooves are arranged at both ends of the first adjusting arm, and a first adjusting shaft is slidably connected to the adjusting groove at one end thereof; a second adjusting arm is rotatably connected to the pin shaft at the end of the first support arm, a pin shaft is arranged at one end of the second adjusting arm and is arranged in the adjusting groove at the end of the first adjusting arm; an adjusting groove is arranged at the other end of the second adjusting arm and is slidably connected to a second adjusting shaft.

[0018] The charging mechanism includes a first fixing frame, sliders, first electric push rods and second electric push rods are arranged on both sides of the first fixing frame, and second guiding grooves are arranged on the inner walls at both ends of the first fixing frame; a groove is arranged at the bottom of one side wall of the first fixing frame; the sliders are arranged in the first guiding grooves, the first electric push rods are fixed on the inner wall of the pickling tank, and the top shafts of the first electric push rods are fixedly connected to the sliders; an isolation sealing cover is arranged outside the second electric push rods, a third adjusting arm is arranged on the top shafts of the second electric push rods, a guiding arm is arranged on the third adjusting arm, and the guiding arm is arranged in the second guiding grooves; a fixed first limiting block and a hinged first hook plate are arranged at the end of the third adjusting arm.

[0019] A first limiting mechanism is arranged on the side wall of the first fixing frame, and the first limiting mechanism includes an L-shaped plate, an inserting block, a third spring and a first guiding shaft; the L-shaped plate is fixedly connected to the first fixing frame, one end of the first guiding shaft is slidably connected to the L-shaped plate, the other end is fixedly connected to the inserting block, an inverted chamfer is arranged on the inserting block, the inserting block is slidably connected to the first fixing frame, the third spring is sleeved on the first guiding shaft, and the third spring abuts against the L-shaped plate and the first fixing frame.

[0020] The replacement mechanism includes a second fixing frame, the second fixing frame is arranged above the brushing roller, both ends of the second fixing frame are fixedly connected to the inner wall of the pickling tank, third electric push rods are arranged at both ends of the second fixing frame, a support plate, a second limiting block and a hinged pressing plate are fixedly connected to the top shafts of the third electric push rods, the second limiting block is arranged above the pressing plate, and a tension spring fixedly connected to each other is arranged between the support plate and the pressing plate.

[0021] Second limiting mechanisms are arranged on both sides of the second fixing frame, and the second limiting mechanisms include a fourth adjusting arm, a second motor and a pair of limiting plates. The limiting plates are slidably connected to the side wall of the second fixing frame. A third adjusting shaft is arranged on the limiting plates. A first rotating shaft is arranged on the fourth adjusting arm. The first rotating shaft is rotatably connected to the support plate. The support plate is fixedly connected to the second fixing frame. Chute grooves are arranged at both ends of the fourth adjusting arm. The chute grooves are slidably connected to the third adjusting shaft. The second motor is fixed on the support plate. The output shaft of the second motor is connected to the first rotating shaft. The fourth adjusting arm is driven to rotate by the second motor, and then the limiting plates are driven to slide alternately by the fourth adjusting arm.

[0022] Preferably, a squeezing roller is arranged on one side of the pickling tank to squeeze dry the acid liquid on the stainless steel plate.

[0023] The beneficial effects of the present utility model compared with the prior art are as follows:

[0024] 1) The present utility model is provided with a scraping mechanism and a brushing mechanism. The cooperation of the two can improve the cleaning speed and cleaning effect of the surface scale of the stainless steel plate by pickling with acid solution. Secondly, the scraping mechanism can also suck and transfer the larger scale scraped by the second scraper through the suction pipe, reducing the consumption of the pickling solution in the pickling tank during the decomposition of the scale. At the same time, the rotation of the crushing roller at the suction port can crush the larger scale for quick suction; furthermore, the control mechanism can also push the scale that may block the suction port out of the suction port by controlling the rotation of the first cleaning plate and the second cleaning plate to achieve the cleaning effect and ensure the smoothness of the suction port and the suction pipe; then, the brushing mechanism performs secondary brushing on the stainless steel surface. At the same time, the brushing roller in the brushing mechanism is provided with replaceable brush blocks, and the brushing quality can be ensured by replacing the brush blocks. Furthermore, the contact surfaces of the brushing mechanism and the scraping mechanism with the stainless steel surface are flat, and it is not easy to cause the deformation of the stainless steel plate coil during the removal of oxidation slag;

[0025] 2) The brushing mechanism can brush the residual oxidation slag on the stainless steel surface through the brushing roller. The brushing roller is provided with detachable and replaceable brush blocks, and the brush blocks are provided with flexible brushing parts. When the flexible brushing parts are attached with more oxidation residues, they can be collected by the collection mechanism, and then new brush blocks can be replaced through the replacement mechanism to keep the brushing roller working continuously;

[0026] The brushing roller is provided with a locking mechanism that can quickly lock or unlock the brush block, and the structure is simple and convenient for quickly replacing the brush block; secondly, in the collection mechanism, the first electric push rod can push the first fixing frame to move along the first guide groove and push the top plate. The movement of the top plate cooperates with the lever principle of the first adjusting arm and the second adjusting arm to pull the fixed column in the locking mechanism to move downward, and then pull the cross plate and the adjusting plate to move downward. The adjusting plate pushes the wedge-shaped groove to make the wedge block retract into the fixed shell, thereby releasing the locking of the wedge block on the hook groove of the brush block, and then releasing the fixed state of the brush block; then, the third electric push rod pushes the third adjusting arm to move downward, and then during the reset process of the third adjusting arm, the first hook plate connected by a hinge cooperates with the first limit block to support the brush block, and then the brush block can be lifted to take it out; furthermore, the two sides of the first fixing frame are provided with a first limiting mechanism. During the collection of the brush block, the insertion block will be pushed to slide, and then the insertion block will be reset under the push of the third spring to support and limit the brush block, completing the collection of the brush block. The cooperation is convenient and fast; a groove is provided on one side of the first fixing frame to prevent the first fixing frame from pushing two sets of top plates at the same time and avoid the situation of releasing the fixation of two sets of brush blocks at the same time;

[0027] 3) The dressing mechanism can replace the brush blocks in sequence, stably, conveniently and quickly. By driving the fourth adjusting arm to rotate with the second motor, the fourth adjusting arm can push the limiting plates to slide alternately. When the upper limiting plate slides outwards, the lower limiting plate slides inwards. At this time, all the brush blocks are supported by the lower limiting plate. When the upper limiting plate slides into the box and the lower limiting plate slides outwards, the upper limiting plate will support all the upper brush blocks, and the lower limiting plate will release the support for the brush blocks between the limiting plates, causing them to fall on the fourth fixing plate. Then, the pressing plate is pushed by the third electric push rod to press the brush blocks, and the locking between the hook groove and the limiting block on the locking structure is realized. Furthermore, the second limiting mechanism realizes the effect of feeding the brush blocks in the second fixing frame in sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Attached Figure 1 is a schematic structural diagram of a surface control device and method for pickling a stainless steel composite slab of the present utility model Figure 1 ;

[0029] Attached Figure 2 is a schematic structural diagram of a surface control device and method for pickling a stainless steel composite slab of the present utility model Figure 2 ;

[0030] Attached Figure 3 is a schematic structural diagram of the scraping mechanism Figure 1 ;

[0031] Attached Figure 4 is a schematic structural diagram of the scraping mechanism Figure 2 ;

[0032] Attached Figure 5 is a schematic structural diagram of the scraping mechanism Figure 3 ;

[0033] Attached Figure 6 is a schematic structural diagram of the straw;

[0034] Attached Figure 7 is a schematic structural diagram of the suction port and the control mechanism;

[0035] Attached Figure 8 is a schematic structural diagram of the control mechanism;

[0036] Attached Figure 9 is a schematic structural diagram of the suction port;

[0037] Attached Figure 10 is a schematic structural diagram of the brushing mechanism;

[0038] Attached Figure 11 is a schematic structural diagram of the dressing mechanism;

[0039] Attached Figure 12 is a schematic structural diagram of the third electric push rod;

[0040] Attached Figure 13 is a schematic structural diagram of the collection mechanism Figure 1 ;

[0041] Attached Figure 14 is a schematic structural diagram of the collection mechanism Figure 2 ;

[0042] Attached Figure 15 is a schematic structural diagram of the scrubbing roller Figure 1 ;

[0043] Attached Figure 16 is a schematic structural diagram of the scrubbing roller Figure 2 ;

[0044] Attached Figure 17 is a schematic structural diagram of the scrubbing roller Figure 3 ;

[0045] Attached Figure 18 is a schematic structural diagram of the locking mechanism;

[0046] Attached Figure 19 is a schematic structural diagram of the brush block;

[0047] Attached Figure 20 is a schematic structural diagram of the top plate;

[0048] In the figure: 1, pickling tank; 101, support roller; 102, first guide groove; 2, scrubbing mechanism; 3, scrubbing roller; 4, collection mechanism; 5, replacement mechanism; 6, scraping mechanism; 7, stainless steel plate;

[0049] 31, first motor; 32, roller shaft; 33, partition; 331, installation groove; 332, top plate; 3321, first adjustment shaft; 333, first spring; 334, first through groove; 34, fourth fixing plate; 341, first support arm; 342, second support arm; 344, first adjustment arm; 345, second adjustment arm; 35, brush block; 351, fixing seat; 352, felt cloth; 353, hook groove; 36, locking mechanism; 361, fixing shell; 362, wedge block; 3621, wedge groove; 363, cross plate; 3631, adjustment plate; 364, second spring; 365, fixing column; 3651, second adjustment shaft;

[0050] 41, first fixing frame; 411, slider; 412, groove; 413, second guide groove; 42, first electric push rod; 43, second electric push rod; 431, third adjustment arm; 432, guide arm; 433, first limit block; 434, first hook plate; 44, first limit mechanism; 441, L-shaped plate; 442, insertion block; 443, third spring; 444, first guide shaft;

[0051] 51. Second fixing bracket; 52. Third electric push rod; 521. Support plate; 522. Pressure plate; 523. Second limit block; 524. Tension spring; 53. Second limiting mechanism; 531. Limit plate; 5311. Third adjusting shaft; 532. Fourth adjusting arm; 5321. Chute; 5322. First rotating shaft; 533. Second motor;

[0052] 61. Fixed roller; 62. Sleeve; 621. First scraping plate; 6211. First fixing plate; 622. Second scraping plate; 6221. Second fixing plate; 623. Third fixing plate; 624. Through pipe; 625. Third motor; 626. Second guiding shaft; 627. Fourth spring; 63. Water suction pump; 64. Suction pipe; 65. Crushing roller; 66. Suction port; 661. First cleaning plate; 6611. First fixing shaft; 662. Second cleaning plate; 6621. Second fixing shaft;

[0053] 67. Control mechanism; 671. Z-shaped rack; 672. Fourth motor; 673. Limit post; 674. Second rotating shaft; 675. Second through groove; 8. Box body; 81. Filter plate; 82. Pipeline. Detailed implementation mode

[0054] For the convenience of understanding by those skilled in the art, the technical solutions of the present utility model will be further specifically described below in conjunction with the attached Figures 1 - 20 , and the technical solutions of the present utility model will be further specifically described.

[0055] Embodiment 1:

[0056] A pickling surface control device for a stainless steel composite slab includes a pickling tank 1, a brushing mechanism 2, and a scraping mechanism 6. There are a pair of scraping mechanisms 6 symmetrically arranged on both sides of the stainless steel plate 7, and a pair of brushing mechanisms 2 symmetrically arranged on both sides of the stainless steel plate 7; on the outer walls of both sides of the pickling tank 1, there is a box body 8, inside the box body 8, there is a filter plate 81 and a pipeline 82. One end of the pipeline 82 is provided with a water suction pump, and the other end of the pipeline 82 is connected to the pickling tank 1; the brushing mechanism 2 includes a brushing roller 3, a collection mechanism 4, and a replacement mechanism 5.

[0057] The scraping mechanism 6 includes a pair of fixedly connected fixed rollers 61, and one end of the fixed roller 61 is rotatably connected to the pickling tank 1; the fixed roller 61 includes a sleeve 62, a suction pipe 64, a water suction pump 63, and a crushing roller 65; the sleeve 62 sleeves the suction pipe 64, the water suction pump 63 is arranged at the end of the suction pipe 64, and the water suction pump 63 is arranged in the box body 8 and on one side of the filter plate 81; a first scraper 621 is arranged on the sleeve 62, a second scraper 622 is sleeved on the first scraper 621, a first fixing plate 6211 is further arranged on the first scraper 621, a second fixing plate 6221 is arranged on the second scraper 622, a second guiding shaft 626 is hingedly connected to the second fixing plate 6221, one end of the second guiding shaft 626 passes through the first fixing plate 6211 and is slidably connected, a fourth spring 627 is sleeved on the second guiding shaft 626, and the fourth spring 627 abuts against the first fixing plate 6211 and the second fixing plate 6221; the fourth spring 627 pushes the second scraper 622 to slide on the first scraper 621; a third fixing plate 623 is arranged at one end of the sleeve 62, a third motor 625 is arranged on the third fixing plate 623, and a gear is arranged at the shaft end of the third motor 625; a through pipe 624 is further arranged at one end of the sleeve 62, and the through pipe 624 passes through the side wall of the pickling tank 1 for connecting a circuit; a pair of crushing rollers 65 are arranged on the first scraper 621 through bearing seats, gears are arranged at the ends of the crushing rollers 65 and are meshed with each other, and a transmission gear meshed with the gear at the shaft end of the third motor 625 is further arranged on one of the crushing rollers 65; the crushing rollers 65 are driven by the third motor 625 to rotate to crush the large pieces of scale scraped by the second scraper 622.

[0058] A plurality of suction ports 66 are arranged on the suction pipe 64, a first cleaning plate 661 and a second cleaning plate 662 are arranged on the inner wall of the suction port 66, the first cleaning plates 661 are fixedly connected through a first fixing shaft 6611, the first fixing shaft 6611 is rotatably connected to the side walls of the suction ports 66, a gear is arranged at one end of the first fixing shaft 6611, the second cleaning plates 662 are fixedly connected through a second fixing shaft 6621, and the second fixing shaft 6621 is rotatably connected to the side walls of the suction ports 66; a gear is arranged at the end of the second fixing shaft 6621, and control mechanisms 67 are arranged on the suction ports at both ends of the suction pipe 64 and are respectively used for controlling the rotation of the first fixing shaft 6611 and the second fixing shaft 6621.

[0059] The control mechanism 67 includes a Z-shaped rack 671, a fourth motor 672, a limit post 673, and a second rotating shaft 674. The second rotating shaft 674 is rotatably connected to the side wall of the suction port 66, and a gear is provided on the second rotating shaft 674. The fourth motor 672 is fixed to the side wall of the suction port 66 through a motor base, and the shaft end of the fourth motor 672 is connected to the second rotating shaft 674. A pair of Z-shaped racks 671 are provided on the upper and lower sides of the second rotating shaft 674. A second through groove 675 is provided on the Z-shaped rack 671, and a limit post 673 is arranged in the second through groove 675. The limit post 673 is fixedly connected to the side wall of the suction port 66, and the Z-shaped rack 671 meshes with the gear at the end of the first fixed shaft 6611 or the gear at the end of the second fixed shaft 6621.

[0060] The scrubbing roller 3 includes a first motor 31, a roller shaft 32, a partition 33, a fourth fixing plate 34, a brush block 35, and a locking mechanism 36. The two ends of the roller shaft 32 are rotatably connected to the side wall of the pickling tank 1. The first motor 31 is fixed to the side wall of the pickling tank 1, and the output shaft of the first motor 31 is connected to the end of the roller shaft 32. Eight pairs of partitions 33 are provided and fixedly connected to the roller shaft 32. The fourth fixing plates 34 are arranged between the partitions 33 and fixedly connected to each other. The locking mechanism 36 is arranged on the fourth fixing plate 34. A number of brush blocks 35 are provided and fixed to the fourth fixing plate 34 through the locking mechanism 36.

[0061] Both ends of the partition 33 are provided with an installation groove 331 and a first through groove 334. A top plate 332 and a first spring 333 are arranged in the installation groove 331, and the first spring 333 pushes the top plate 332. A first adjusting shaft 3321 is provided on the top plate 332.

[0062] The brush block 35 includes a fixing seat 351. A flexible scrubbing part is provided on the fixing seat 351. The flexible scrubbing part includes a felt cloth 352, and a hook groove 353 is provided on one side of the fixing seat 351.

[0063] The locking mechanism 36 includes a fixing shell 361. The fixing shell 361 is fixed to the fourth fixing plate 34. Symmetrically arranged wedge blocks 362 are arranged in the fixing shell 361. The wedge blocks 362 are slidably connected to the fixing shell 361. A wedge groove 3621 is provided on the wedge block 362. A cross plate 363 is arranged above the wedge block 362. An adjusting plate 3631 is provided on the cross plate 363, and the adjusting plate 3631 corresponds to the wedge groove 3621. A fixing column 365 is also provided on the cross plate 363. The fixing column 365 passes through the fourth fixing plate 34 and is slidably connected. A second adjusting shaft 3651 is provided at the end of the fixing column 365. A second spring 364 is arranged between the wedge blocks 362, and the second spring 364 pushes the wedge blocks 362 to slide.

[0064] At the bottom of the fourth fixing plate 34, there are fixed first support arm 341 and second support arm 342. At the ends of the second support arm 342 and the first support arm 341, there are pin shafts. On the pin shaft at the end of the second support arm 342, there is a first adjusting arm 344 connected in a rotating manner. At both ends of the first adjusting arm 344, there are adjusting slots, and at one end of the adjusting slots, a first adjusting shaft 3321 is slidably connected. On the pin shaft at the end of the first support arm 341, there is a second adjusting arm 345 connected in a rotating manner. At one end of the second adjusting arm 345, there is a pin shaft and it is arranged in the adjusting slot at the end of the first adjusting arm 344. At the other end of the second adjusting arm 345, there is an adjusting slot and a second adjusting shaft 3651 is slidably connected.

[0065] The charging mechanism 4 includes a first fixing frame 41. On both sides of the first fixing frame 41, there are sliders 411, a first electric push rod 42, and a second electric push rod 43. On the inner walls at both ends of the first fixing frame 41, there are second guiding slots 413. At the bottom of one side wall of the first fixing frame 41, there is a groove 412. The slider 411 is arranged in the first guiding slot 102. The first electric push rod 42 is fixed on the inner wall of the pickling tank 1, and the top shaft of the first electric push rod 42 is fixedly connected to the slider 411. An isolation sealing cover is arranged outside the second electric push rod 43. On the top shaft of the second electric push rod 43, there is a third adjusting arm 431. On the third adjusting arm 431, there is a guiding arm 432, and the guiding arm 432 is arranged in the second guiding slot 413. At the end of the third adjusting arm 431, there are a fixed first limiting block 433 and a hinged first hook plate 434.

[0066] On the side wall of the first fixing frame 41, there is a first limiting mechanism 44. The first limiting mechanism 44 includes an L-shaped plate 441, an inserting block 442, a third spring 443, and a first guiding shaft 444. The L-shaped plate 441 is fixedly connected to the first fixing frame 41. One end of the first guiding shaft 444 is slidably connected to the L-shaped plate 441, and the other end is fixedly connected to the inserting block 442. The inserting block 442 has an inclined chamfer. The inserting block 442 is slidably connected to the first fixing frame 41. The third spring 443 is sleeved on the first guiding shaft 444, and the third spring 443 abuts against the L-shaped plate 441 and the first fixing frame 41.

[0067] The replacement mechanism 5 includes a second fixing frame 51. The second fixing frame 51 is arranged above the brushing roller 3. Both ends of the second fixing frame 51 are fixedly connected to the inner wall of the pickling tank 1. At both ends of the second fixing frame 51, there are third electric push rods 52. On the top shafts of the third electric push rods 52, there are fixedly connected support plates 521, second limiting blocks 523, and a hinged pressing plate 522. The second limiting block 523 is arranged above the pressing plate 522. Between the support plate 521 and the pressing plate 522, there is a tension spring 524 fixedly connected to each other.

[0068] On both sides of the second fixing frame 51, there are second limiting mechanisms 53. The second limiting mechanism 53 includes a fourth adjusting arm 532, a second motor 533, and a pair of limiting plates 531. The limiting plates 531 are slidably connected to the side wall of the second fixing frame 51. A third adjusting shaft 5311 is provided on the limiting plate 531. A first rotating shaft 5322 is provided on the fourth adjusting arm 532. The first rotating shaft 5322 is rotatably connected to a support plate 521. The support plate 521 is fixedly connected to the second fixing frame 51. Chute 5321 is provided at both ends of the fourth adjusting arm 532. The chute 5321 is slidably connected to the third adjusting shaft 5311. The second motor 533 is fixed on the support plate 521. The output shaft of the second motor 533 is connected to the first rotating shaft 5322. By driving the fourth adjusting arm 532 to rotate through the second motor 533, the limiting plates 531 are driven to slide alternately through the fourth adjusting arm 532.

[0069] Further, a squeezing roller is provided on one side of the pickling tank 1 to squeeze dry the stainless steel plate to avoid acid liquid.

[0070] The stainless steel plate 7 is pickled through the pickling tank 1 and is directionally transmitted through the support roller 101. The stainless steel plate 7 first passes through the scraping mechanism 6 to scrape both sides of the large-scale oxide scale on the surface of the stainless steel plate 7 immersed in the acid liquid, which can improve the cleaning speed. Then, the stainless steel plate 7 is double-sided brushed by the brushing mechanism 2 for the part immersed in the acid liquid, and the remaining oxide residues are brushed. Then, combined with the overall acid pickling process of the acid liquid, the cleaning of the oxide scale is completed, and the cleaning effect is improved.

[0071] A method for using a surface control device for pickling stainless steel composite slabs

[0072] 1) First, anneal the stainless steel plate and remove scale by shot blasting;

[0073] 2) Immerse and pickle in the pickling tank. During the pickling process, clean the remaining oxide scale on the surface of the stainless steel plate through the brushing mechanism and the scraping mechanism; The pickling process has a first mixed acid stage and a second mixed acid stage;

[0074] In the first mixed acid stage, HNO3 is 80 g / L, HF is 30 g / L, Me is 35 g / L, and the temperature is 55 °C;

[0075] In the second mixed acid stage, HNO3 is 70 g / L, HF is 25 g / L, Me is 30 g / L, and the temperature is 45 °C;

[0076] At the same time, the scraping mechanism and the brushing mechanism in the pickling tank sequentially scrape and brush the surface of the stainless steel plate, and cooperate with the pickling effect of the acid liquid to clean the remaining oxide scale;

[0077] a: During the process of the scraping mechanism 6 scraping the scale, the large-scale scale on the surface of the stainless steel plate 7 is scraped by the second scraper 622 pushed by the fourth spring 627. Meanwhile, the water suction pump 63 sucks water, and the scraped scale is sucked into the suction pipe 64 along the suction port 66 and enters the box body 8 for precipitation. Further, the third motor 625 drives the crushing roller 65 to rotate, so that a pair of crushing rollers 65 rotate to crush the scraped scale. After crushing, the scale enters the suction port 66 and the suction pipe 64. The acid liquid in the box body 8 is isolated from the scale by the filter plate 81, and then the acid liquid is sucked and refluxed into the pickling tank 1 through the pipeline 82 in cooperation with the water pump, reducing the consumption speed of the acid liquid.

[0078] Among them, the fourth motor 672 in the control mechanism 67 can be driven to drive the Z-shaped rack 671 to slide oppositely along the second through groove 675, thereby controlling the rotation of the first fixed shaft 6611 or the second fixed shaft 6621, and further rotating the first cleaning plate 661 and the second cleaning plate 662 to push out the scale blocking the suction port 66 for cleaning, ensuring the smoothness of the suction port 66; the through pipe 624 is used to penetrate the circuit used by the control mechanism 67.

[0079] b: Subsequently, the surface of the stainless steel plate 7 soaked in the pickling solution is brushed by the brushing mechanism 2. During the brushing process, the first motor 31 drives the roller shaft 32 to rotate, and then the flexible brushing part on the brush block 35 brushes the surface of the stainless steel plate 7, reducing the residual amount of scale; when there is more oxidation residue adhered to the flexible brushing part, the brush block 35 can be collected and replaced by the collection mechanism 4 and the replacement mechanism 5; first, the brush block 35 is pressed down so that the hook groove 353 squeezes the wedge block 362, and then the wedge block 362 is pushed out of the fixed shell 361 by the second spring 364 and locks the hook groove 353 to fix the brush block 35.

[0080] When it is necessary to replace the brush block 35, the first fixed frame 41 is pushed by the first electric push rod 42 to slide along the first guide groove 102, so that the side wall of one side of the first fixed frame 41 pushes against the top plate 332. At the same time, the groove 412 on the other side of the first fixed frame 41 can prevent the side wall of the first fixed frame 41 from pushing two pairs of top plates 332 at the same time, and thus releasing two pairs of brush blocks 35 at the same time; when the top plate 332 slides in the installation groove 331, it will drive the first adjusting arm 344 to swing with the second support arm 342 as the fulcrum, and then will trigger the second adjusting arm 345 to swing with the first support arm 341 as the fulcrum. Finally, the fixed column 365 will be pulled to slide. The fixed column 365 pulls the cross plate 363 and the adjusting plate 3631 to move downward. The downward movement of the adjusting plate 3631 presses against the wedge groove 3621 on the wedge block 362, causing the wedge block 362 to slide and reset and shrink into the fixed shell 361, releasing the locking state of the wedge block 362 on the hook groove 353; then the third adjusting arm 431 is pushed by the second electric push rod 43 to slide along the second guide groove 413, so that the first hook plate 434 moves to the lower part of the brush block 35, and then the first hook plate 434 is lifted and reset. The first limiting block 433 can provide a supporting and limiting effect on the first hook plate 434. The first hook plate 434 drags both ends of the brush block 35 to move the brush block 35 upward so that the brush block 35 crosses the first limiting mechanism 44. The brush block 35 pushes against the insertion block 442 to make it contract, and then the insertion block 442 is pushed by the third spring 443 to reset to support the received brush block 35 to prevent it from sliding down, thus completing the collection of the brush block 35. Then the first fixed frame 41 is reset to avoid interfering with the rotation of the scrubbing roller 3. Subsequently, the scrubbing roller 3 is rotated to collect the next pair of brush blocks 35 in the above steps.

[0081] c: When the scrubbing roller 3 rotates above the replacement mechanism 5, the replacement of the brush block 35 is carried out. At this time, several brush blocks 35 are provided in the second fixed frame 51 and are controlled and alternately fed through the second limiting mechanism 53. During replacement, first, the fourth adjusting arm 532 is driven by the second motor 533 to rotate, realizing the alternate sliding of the limiting plate 531. Through the alternate sliding of the limiting plate 531, the falling of the brush block 35 and the limiting of the brush block 35 are realized; the falling brush block 35 will press the pressing plate 522 to rotate, and then the pressing plate 522 will reset again under the action of the tension spring 524. After the pressing plate 522 is reset, the top shaft of the third electric push rod 52 is pushed out to drive the pressing plate 522 to press and push the brush block 35, so that the hook groove 353 on the brush block 35 squeezes the wedge block 362 on the locking mechanism 36 to retract into the fixed shell 361. Then, when the wedge block 362 is pushed out and reset again, the locking and fixing of the brush block 35 are completed; then the top shaft of the third electric push rod 52 and the pressing plate 522 rise and reset; the hinge connection state of the pressing plate 522 enables the pressing plate 522 to rotate over the obstruction and interference of the brush block 35 when resetting and rising.

[0082] 3) Acid squeezing: The pickled stainless steel plate is squeezed dry by the squeezing roller.

[0083] Example 2:

[0084] The difference compared with Example 1 is as follows:

[0085] In the first stage of the mixed acid, HNO3 is 85 g / L, HF is 35 g / L, Me is 38 g / L, and the temperature is 60 °C;

[0086] In the second stage of the mixed acid, HNO3 is 75 g / L, HF is 30 g / L, Me is 35 g / L, and the temperature is 50 °C.

[0087] Example 3:

[0088] The difference compared with Example 2 is as follows:

[0089] In the first stage of the mixed acid, HNO3 is 75 g / L, HF is 25 g / L, Me is 30 g / L, and the temperature is 45 °C;

[0090] In the second stage of the mixed acid, HNO3 is 65 g / L, HF is 20 g / L, Me is 28 g / L, and the temperature is 40 °C.

[0091] Example 4: The difference compared with Example 1 is that there is no or no use of the brushing mechanism and scraping mechanism in the pickling tank, and only the pickling processes of the sulfuric acid stage and the mixed acid stage are carried out;

[0092] In the first stage of the mixed acid, HNO3 is 80 g / L, HF is 30 g / L, Me is 35 g / L, and the temperature is 55 °C;

[0093] In the second stage of the mixed acid, HNO3 is 70 g / L, HF is 25 g / L, Me is 30 g / L, and the temperature is 45 °C.

[0094] Example 5: The difference compared with Example 4 is as follows:

[0095] In the first stage of the mixed acid, HNO3 is 95 g / L, HF is 45 g / L, Me is 45 g / L, and the temperature is 65 °C;

[0096] In the second stage of the mixed acid, HNO3 is 80 g / L, HF is 35 g / L, Me is 40 g / L, and the temperature is 55 °C.

[0097] Example 6: The difference compared with Example 4 is as follows:

[0098] In the first stage of the mixed acid, HNO3 is 65 g / L, HF is 20 g / L, Me is 20 g / L, and the temperature is 40 °C;

[0099] In the second stage of the mixed acid, HNO3 is 60 g / L, HF is 15 g / L, Me is 20 g / L, and the temperature is 30 °C.

[0100] Comparative example: The steel strip was pickled by a continuous pickling device for stainless steel strip and its usage method with the application number 202111141626.0;

[0101] Table 1:

[0102] Whether the surface of the stainless - steel plate is smooth Whether there are dirty marks on the stainless - steel surface Example 1 Visually smooth and without scratches None Example 2 Visually smooth and without scratches None Example 3 Visually smooth and without scratches None Example 4 Visually smooth and without scratches, with black marks Yes Example 5 Visually rough surface Yes Example 6 Visually rough surface Yes Control example Visually smooth and without scratches Yes

[0103] According to the above Table 1, the appearance quality inspection results are as follows:

[0104] The surface inspection results of Example 1, Example 2, and Example 3 are qualified, and the surface of the stainless steel plate is smooth without scratches and black marks.

[0105] The difference between Example 4 and Example 1, Example 2, and Example 3 is that there is no brushing mechanism and scraping mechanism, and only the pickling solution immersion processes of the first stage of mixed acid and the second stage of mixed acid with the same standard are carried out. The surface of the stainless steel is smooth without scratches, but there are black marks.

[0106] Compared with Example 4, in Example 5, the indicators of the first stage of mixed acid and the second stage of mixed acid are higher than the standard of Example 4, resulting in over-pickling, which makes the surface of the stainless steel visually rough and has black marks.

[0107] Compared with Example 4, in Example 6, the indicators of the first stage of mixed acid and the second stage of mixed acid are lower than the standard of Example 4, and the pickling degree is not thorough, resulting in the surface of the stainless steel being visually rough and having black marks.

[0108] After the pickling process in the comparative example, the situation of incomplete pickling occurred on the surface, and there were dirty marks and black marks remaining.

[0109] In summary, by adding a scraping mechanism and a brushing mechanism in the pickling tank, it can cooperate with the pickling solution to clean the oxide scale on the surface of the stainless steel plate more thoroughly and avoid the generation of defects such as dirty marks and black marks.

[0110] In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0111] In summary, the electronic or electrical components such as electric push rods and motors, including but not limited to, are components in the prior art, obtained through private customization or purchase. The electrical connections between the components are all conventional circuit connections or electrical connections in the prior art, and are not within the protection scope of the present utility model;

[0112] The above content is only an example and explanation of the structure of the present utility model. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution. As long as they do not deviate from the structure of the utility model or exceed the scope defined by this claim book, they should all fall within the protection scope of the present utility model.

Claims

1. A stainless steel composite plate pickling surface control device, comprising a pickling box, a brushing mechanism, and a scraping mechanism, characterized in that A pair of scraping mechanisms are symmetrically arranged on both sides of the stainless steel plate, and a pair of brushing mechanisms are symmetrically arranged on both sides of the stainless steel plate; a box body is arranged on the outer walls of both sides of the pickling box, a filter plate and a pipeline are arranged in the box body, a water suction pump is arranged at one end of the pipeline, and the other end of the pipeline is connected to the pickling box; the brushing mechanism includes a brushing roller, a collecting mechanism, and a changing mechanism; The scraping mechanism includes a pair of fixed rollers that are fixedly connected, and one end of the fixed roller is rotatably connected to the pickling box; the fixed roller includes a sleeve, a suction pipe, a water suction pump, and a crushing roller; the sleeve is sleeved with the suction pipe, and the water suction pump is arranged at the end of the suction pipe, and the water suction pump is arranged in the box and located on one side of the filter plate; the sleeve is provided with a first scraper, and the first scraper is provided with a sleeved second scraper, the first scraper is also provided with a first fixed plate, the second scraper is provided with a second fixed plate, and the second fixed plate is provided with a hinged second guide shaft, one end of the second guide shaft passes through the first fixed plate and is slidably connected, the second guide shaft is sleeved with a fourth spring, and the fourth The spring contacts the first fixed plate and the second fixed plate; the fourth spring pushes the second scraper to slide on the first scraper; a third fixed plate is provided at one end of the sleeve, a third motor is provided on the third fixed plate, and a gear is provided at the shaft end of the third motor; a through pipe is also provided at one end of the sleeve, and the through pipe passes through the side wall of the pickling box for connecting the line; a pair of crushing rollers are provided and are arranged on the first scraper through a bearing seat, and gears are provided at the ends of the crushing rollers and mesh with each other, and one pair of crushing rollers is also provided with a transmission gear meshing with the gear at the shaft end of the third motor; the crushing rollers are driven by the third motor to rotate to crush the large pieces of oxide scale scraped off by the second scraper; The straw is provided with a plurality of suction ports, and a first cleaning plate and a second cleaning plate are provided on the inner wall of the suction port. The first cleaning plates are fixedly connected to each other by a first fixed shaft, and the first fixed shaft is rotatably connected to the side walls of the suction ports. A gear is provided at one end of the first fixed shaft, and the second cleaning plates are fixedly connected to each other by a second fixed shaft, and the second fixed shaft is rotatably connected to the side walls of the suction ports; a gear is provided at the end of the second fixed shaft, and control mechanisms are provided on the suction ports at both ends of the straw and are respectively used to control the rotation of the first fixed shaft and the second fixed shaft.

2. A stainless steel composite plate pickling surface control device according to claim 1, characterized in that The control mechanism includes a Z-shaped rack, a fourth motor, a limit column, and a second rotating shaft; the second rotating shaft is rotatably connected to the side wall of the suction port, and a gear is provided on the second rotating shaft; the fourth motor is fixed to the side wall of the suction port through a motor seat, and the shaft end of the fourth motor is connected to the second rotating shaft, and a pair of Z-shaped racks are provided and are arranged on the upper and lower sides of the second rotating shaft; the Z-shaped rack is provided with a second through groove, and a limit column is provided in the second through groove, the limit column is fixedly connected to the side wall of the suction port, and the Z-shaped rack engages with the gear at the end of the first fixed shaft or the gear at the end of the second fixed shaft.

3. The pickling surface control device for stainless steel composite slab according to claim 1 is characterized in that The brushing roller includes a first motor, a roller shaft, a partition, a fourth fixed plate, a brush block, and a locking mechanism; both ends of the roller shaft are rotatably connected to the side wall of the pickling box, the first motor is fixed on the side wall of the pickling box, the output shaft of the first motor is connected to the end of the roller shaft, the partitions are provided with eight pairs and fixedly connected to the roller shaft, the fourth fixed plate is provided between the partitions and fixedly connected to each other; the locking mechanism is provided on the fourth fixed plate; a plurality of brush blocks are provided and fixed to the fourth fixed plate through the locking mechanism.

4. A stainless steel composite plate pickling surface control device according to claim 3, characterized in that The two ends of the partition are provided with a mounting groove and a first through groove, a top plate and a first spring are provided in the mounting groove, and the first spring pushes the top plate; a first adjustment shaft is provided on the top plate; The brush block comprises a fixing seat, a flexible brushing portion is arranged on the fixing seat, the flexible brushing portion comprises a felt cloth, and a hook groove is arranged on one side of the fixing seat.

5. The pickling surface control device for stainless steel composite slab according to claim 3 is characterized in that The locking mechanism includes a fixed shell, which is fixed on a fourth fixed plate. A symmetrically arranged wedge block is arranged in the fixed shell. The wedge block is slidably connected to the fixed shell. A wedge groove is arranged on the wedge block. A transverse plate is arranged above the wedge block. An adjustment plate is arranged on the transverse plate. The adjustment plate corresponds to the wedge groove. A fixed column is also arranged on the transverse plate. The fixed column passes through the fourth fixed plate and is slidably connected. A second adjustment shaft is arranged at the end of the fixed column. A second spring is arranged between the wedge blocks, and the second spring pushes the wedge block to slide.

6. The pickling surface control device for stainless steel composite slab according to claim 3, characterized in that A first fixed support arm and a second support arm are provided at the bottom of the fourth fixed plate, and pins are provided at the ends of the second support arm and the first support arm; a first adjusting arm rotatably connected is provided on the pin at the end of the second support arm, and adjustment grooves are provided at both ends of the first adjusting arm, and one end of the adjustment groove is slidably connected to the first adjusting shaft; a second adjusting arm rotatably connected is provided on the pin at the end of the first support arm, and a pin is provided at one end of the second adjusting arm and is arranged in the adjustment groove at the end of the first adjusting arm; an adjustment groove is provided at the other end of the second adjusting arm and is slidably connected to the second adjusting shaft.

7. The pickling surface control device for stainless steel composite slab according to claim 1, characterized in that The collecting mechanism includes a first fixed frame, a slider, a first electric push rod, and a second electric push rod are provided on both sides of the first fixed frame, and second guide grooves are provided on the inner walls at both ends of the first fixed frame; a groove is provided at the bottom of one side wall of the first fixed frame; the slider is arranged in the first guide groove, the first electric push rod is fixed on the inner wall of the pickling box, and the top shaft of the first electric push rod is fixedly connected to the slider; an isolation sealing cover is provided on the outer side of the second electric push rod, a third adjusting arm is provided on the top shaft of the second electric push rod, and a guide arm is provided on the third adjusting arm, and the guide arm is arranged in the second guide groove; a fixed first limit block and a hinged first hook plate are provided at the end of the third adjusting arm; A first limiting mechanism is provided on the side wall of the first fixing frame, and the first limiting mechanism includes an L-shaped plate, an insert block, a third spring, and a first guide shaft; the L-shaped plate is fixedly connected to the first fixing frame, one end of the first guide shaft is slidably connected to the L-shaped plate, and the other end is fixedly connected to the insert block, a chamfer is provided on the insert block, the insert block is slidably connected to the first fixing frame, the third spring is sleeved on the first guide shaft, and the third spring touches the L-shaped plate and the first fixing frame.

8. The pickling surface control device for stainless steel composite slab according to claim 1, characterized in that The changing mechanism includes a second fixed frame, the second fixed frame is arranged above the brushing roller, both ends of the second fixed frame are fixedly connected to the inner wall of the pickling box, both ends of the second fixed frame are provided with a third electric push rod, the top shaft of the third electric push rod is provided with a fixedly connected support plate, a second limit block and a hinged pressure plate, the second limit block is arranged above the pressure plate, and a tension spring fixedly connected to each other is provided between the support plate and the pressure plate.

9. A stainless steel composite slab pickling surface control device according to claim 8, characterized in that A second limiting mechanism is provided on both sides of the second fixing frame, the second limiting mechanism includes a fourth adjusting arm, a second motor and a pair of limiting plates, the limiting plate is slidably connected to the side wall of the second fixing frame, a third adjusting shaft is provided on the limiting plate, the fourth adjusting arm is provided with a first rotating shaft, the first rotating shaft is rotatably connected to the support plate, the support plate is fixedly connected to the second fixing frame, sliding grooves are provided at both ends of the fourth adjusting arm, the sliding grooves are slidably connected to the third adjusting shaft, the second motor is fixed to the support plate, the output shaft of the second motor is connected to the first rotating shaft, the fourth adjusting arm is driven to rotate by the second motor, and then the limiting plates are driven to slide alternately by the fourth adjusting arm; A squeeze roller is provided on one side of the pickling box to prevent the stainless steel plate from being squeezed out of the acid.

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