Steel bar pickling tank

Abstract

The utility model discloses a steel bar pickling tank which comprises a tank body used for steel bar pickling, an inner cavity of the tank body is rotationally connected with a plurality of sets of supporting rollers through bearings, and one end of each supporting roller penetrates to the outer side of the tank body and extends into a fixing box. According to the steel bar pickling device, steel bars needing to be subjected to pickling treatment are arranged between the pressing roller and the driving roller, the pressing roller extrudes the steel bars, the steel bars are gradually conveyed into the pool body under the driving of the conveying assembly, and after being conveyed by a certain length, the steel bars are naturally bent under the influence of gravity and make contact with the supporting rollers in the pool body; meanwhile, the supporting rollers can be driven by the one-way driving assembly to drive the reinforcing steel bars, so that the reinforcing steel bars move in the pool body, then the reciprocating driving assembly drives the upper twisting plate and the lower twisting plate to move relatively under the driving of the connecting belt, the reinforcing steel bars rotate, it is ensured that the reinforcing steel bars make full contact with the pickling solution in the pool body, and the pickling solution can be recycled by controlling the conveying speed of the reinforcing steel bars. And the long reinforcing steel bars can be subjected to acid pickling treatment uninterruptedly.

Description

Technical Field

[0001] The utility model relates to the technical field of pickling, in particular to a steel bar pickling tank. Background Art

[0002] The method of using acid solution to remove scale and rust on the surface of steel is called pickling. It is a method of cleaning the metal surface. Generally, the workpiece is immersed in an aqueous solution of sulfuric acid to remove oxides and other films on the metal surface.

[0003] In the prior art, the Chinese invention content of the authorization announcement number: CN117328073A discloses a steel pickling tank, which includes a pickling tank, a vibration plate is horizontally placed in the pickling tank, a supporting plate for supporting steel is fixedly connected to the vibration plate, two groups of vibration components are installed in the pickling tank for driving the vibration plate to move up and down, the two groups of vibration components are respectively located on both sides of the vibration plate, and mounting grooves are provided on the inner walls of both sides of the pickling tank; the vibration components include a motor fixedly connected to the side wall of the pickling tank, a reciprocating screw rotatably installed on the inner wall of the mounting groove, a guide rod fixedly connected to the inner wall of the mounting groove, and a vibration block sleeved on the reciprocating screw and the guide rod; a first bevel gear is fixedly connected to the output shaft of the motor, a second bevel gear meshing with the first bevel gear is fixedly connected to the reciprocating screw, and the vibration block is threadedly connected to the reciprocating screw, and the vibration block is placed below the vibration plate. This application improves the problem of poor steel pickling effect.

[0004] The above technical solution is a traditional type of pickling tank. This technical solution adds a vibration block and a reciprocating screw inside to make the bracket plate drive the steel to move up and down, so that the solution in the pickling tank is evenly mixed and the steel can be fully in contact with the pickling solution. However, this solution is only suitable for immersion pickling of shorter lengths of steel. When processing longer steel bars, the pickling tank cannot be designed to be slender, which not only increases the space occupied by the pickling tank, but also the longer tank body easily leads to uneven concentration of the pickling solution. Utility Model Content

[0005] The utility model aims to provide a steel bar pickling tank, which utilizes the natural bending of steel bars due to the influence of gravity as they extend in length, designs a tank body of suitable length, makes the part of the steel bars inside the tank body fit into the support roller, and then the steel bars are driven by a one-way conveying component and a conveying component to gradually enter the tank body and be immersed in the pickling liquid. By controlling the conveying speed of the steel bars, the steel bars of longer lengths can be pickled continuously to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel bar pickling tank, comprising a tank body used for steel bar pickling, the inner cavity of the tank body is rotatably connected to multiple groups of support rollers through bearings, one end of the support roller passes through the outside of the tank body and extends into a fixed box, a one-way drive component is arranged in the fixed box, a fixed frame is fixed on one side of the tank body, the inner cavity of the fixed frame is rotatably connected to two groups of drive rollers through bearings, a pressure roller is arranged above the drive roller in the inner cavity of the fixed frame, a conveying component for conveying steel bars is arranged on the outside of the fixed frame, an upper twisting plate and a lower twisting plate are movably arranged on one side of the fixed frame away from the tank body, a connecting belt is connected to the ends of the upper twisting plate and the lower twisting plate, a box body fixed to the side of the fixed frame is arranged above the upper twisting plate, two groups of brackets are arranged in the inner cavity of the box body, a supporting gear meshing with the connecting belt is rotatably arranged on the bracket, an adjusting component for adjusting the axial center distance of the supporting gear is arranged in the box body, and a reciprocating drive component for driving the upper twisting plate and the lower twisting plate to move toward each other is arranged at the bottom of the lower twisting plate.

[0007] Preferably, the one-way drive assembly includes a drive shaft that rotates in the inner cavity of a fixed box through a bearing, a first drive motor is fixed to the outside of the fixed box, an output shaft of the first drive motor passes through the inner cavity of the fixed box and is fixedly connected to one end of the drive shaft, the support roller extends to one end of the fixed box and is fixed with a driven bevel gear, and a driving bevel gear meshing with the driven bevel gear is fixed on the drive shaft.

[0008] Preferably, the conveying assembly includes a conveying motor fixed to the outside of the fixed frame, the output shaft of the conveying motor passes through the inner cavity of the fixed frame and is fixedly connected to the ends of a group of driving rollers, one end of the driving roller away from the conveying motor passes through the outside of the fixed frame and is fixed with a pulley, and the outer side of the pulley is connected to a transmission belt.

[0009] Preferably, the pressure roller rotates in the inner cavity of the movable frame through a bearing, an electric push rod is fixed to the top of the fixed frame, and a piston rod of the electric push rod penetrates into the inner cavity of the fixed frame and is fixedly connected to the top of the movable frame.

[0010] Preferably, the adjustment component includes an adjustment motor fixed to one side of the inner cavity of the box body, the output shaft of the adjustment motor is fixed with a bidirectional threaded rod, the other end of the bidirectional threaded rod is rotated on the other side of the inner cavity of the box body through a bearing, the outer side of the bidirectional threaded rod is threadedly connected with two groups of threaded sleeves, the outer side of the threaded sleeve is fixed with a movable block that fits the inner wall of the box body, a through groove is opened at the bottom of the box body, and the bracket passes through the through groove and is fixed to the bottom of the movable block.

[0011] Preferably, the reciprocating drive assembly includes a limit frame fixed on the side wall of the fixed frame, the lower twist plate is located in the inner cavity of the limit frame, a limit slot is provided on the side of the lower twist plate away from the fixed frame, a limit block is fixed to the inner cavity of the limit frame, the limit block extends to the inner cavity of the limit slot and slides in the limit slot, a second drive motor is fixed to the bottom of the limit frame, a drive gear is fixed to the output shaft of the second drive motor, a tooth groove is provided at the bottom of the lower twist plate, the drive gear passes through the limit frame and meshes with the lower twist plate through the tooth groove.

[0012] Preferably, the drive shaft includes multiple groups of movable shafts, the ends of the movable shafts are fixed with universal joints, the outer sides of the movable shafts are rotatably connected with support plates through bearings, the support plates are fixed to the inner cavity of the fixed box, and the driving bevel gears are fixed to the outer sides of the movable shafts.

[0013] Preferably, a slide groove is provided in the inner cavity of the fixed frame, a sliding block is slidably connected to the inner cavity of the slide groove, and the facing side of the sliding block is fixed to the outer side of the movable frame.

[0014] Preferably, a fixing frame is fixed to the side of the movable frame, and the bottom of the fixing frame is attached to the top of the upper twisting plate.

[0015] Preferably, multiple groups of grooves are provided on the outer sides of the support roller and the driving roller, and anti-slip convex strips are fixed to the inner cavities of the grooves.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model places the steel bar that needs pickling treatment between the pressure roller and the driving roller, so that the pressure roller squeezes the steel bar, and under the drive of the conveying component, gradually conveys the steel bar to the inside of the tank body. After conveying a certain length, the steel bar is naturally bent by gravity and contacts the supporting roller inside the tank body. At the same time, the supporting roller can be driven by the unidirectional driving component to drive the steel bar to move inside the tank body, and then the reciprocating driving component drives the upper twisting plate and the lower twisting plate to move relatively under the drive of the connecting belt, so that the steel bar rotates, ensuring that the steel bar is fully in contact with the pickling liquid inside the tank body. By controlling the conveying speed of the steel bar, the steel bar with a longer length can be pickled continuously.

[0018] 2. The utility model links the movable frame with the upper twisting plate through a fixed frame to ensure that the steel bars are stably clamped. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a partial three-dimensional structural schematic diagram of the utility model;

[0021] Figure 3 It is a three-dimensional structural diagram of the fixing frame and the box body of the utility model;

[0022] Figure 4 This is a schematic diagram of the split three-dimensional structure of the fixed frame of the utility model;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the top of the box body of the utility model when viewed from above;

[0024] Figure 6 It is a top view cross-sectional three-dimensional structural schematic diagram of the box body of the utility model;

[0025] Figure 7 It is a schematic diagram of the split three-dimensional structure of the lower twist plate and the limit clamp of the utility model;

[0026] Figure 8 It is a three-dimensional structural schematic diagram of the support roller and the drive shaft of the utility model.

[0027] Numbers in the figure: 1, tank body; 2, support roller; 3, fixed box; 4, one-way drive assembly; 41, drive shaft; 411, movable shaft; 412, universal joint; 413, support plate; 42, first drive motor; 43, driven helical gear; 44, drive helical gear; 5, fixed frame; 6, drive roller; 7, pressure roller; 8, conveying assembly; 81, conveying motor; 82, pulley; 83, transmission belt; 9, upper twisting plate; 10, lower twisting plate; 11, connecting belt; 12 , box body; 13, bracket; 14, supporting gear; 15, adjusting assembly; 151, adjusting motor; 152, bidirectional threaded rod; 153, movable block; 16, reciprocating drive assembly; 161, limiting frame; 162, limiting groove; 163, limiting block; 164, second drive motor; 165, driving gear; 166, tooth groove; 17, movable frame; 18, electric push rod; 19, slide groove; 20, slider; 21, fixed frame; 22, groove; 23, anti-slip convex strip. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The utility model provides Figures 1 to 8A steel bar pickling tank shown in the figure comprises a tank body 1 for pickling steel bars, a circulation system for stirring the pickling liquid is arranged inside the tank body 1, the inner cavity of the tank body 1 is rotatably connected to multiple groups of support rollers 2 through bearings, one end of the support roller 2 penetrates to the outside of the tank body 1 and extends into a fixed box 3, a one-way drive assembly 4 is arranged in the fixed box 3, a fixed frame 5 is fixed to one side of the tank body 1, two groups of drive rollers 6 are rotatably connected to the inner cavity of the fixed frame 5 through bearings, a pressure roller 7 is arranged above the drive roller 6 in the inner cavity of the fixed frame 5, and a conveyor belt 2 for conveying steel bars is arranged on the outer side of the fixed frame 5. Conveying assembly 8, an upper twisting plate 9 and a lower twisting plate 10 are movably provided on one side of the fixed frame 5 away from the pool body 1, and the ends of the upper twisting plate 9 and the lower twisting plate 10 are connected with a connecting belt 11, and a box body 12 fixed to the side of the fixed frame 5 is provided above the upper twisting plate 9, and two groups of brackets 13 are provided in the inner cavity of the box body 12, and a supporting gear 14 meshing with the connecting belt 11 is rotatably provided on the bracket 13, and an adjusting assembly 15 for adjusting the axial center distance of the supporting gear 14 is provided in the box body 12, and a reciprocating driving assembly 16 for driving the upper twisting plate 9 and the lower twisting plate 10 to move toward each other is provided at the bottom of the lower twisting plate 10;

[0030] The steel bars that need pickling are placed between the pressure roller 7 and the driving roller 6, so that the pressure roller 7 squeezes the steel bars, and the steel bars are gradually transported into the tank body 1 under the drive of the conveying component 8. After being transported to a certain length, the steel bars are naturally bent by gravity and contact the supporting roller 2 inside the tank body 1. At the same time, the supporting roller 2 can be driven by the unidirectional driving component 4 to drive the steel bars to move inside the tank body 1. Then the reciprocating driving component 16 drives the upper twisting plate 9 and the lower twisting plate 10 to move relative to each other under the drive of the connecting belt 11, so that the steel bars rotate, ensuring that the steel bars are fully in contact with the pickling solution inside the tank body 1. By controlling the conveying speed of the steel bars, the pickling treatment of longer lengths of steel bars can be carried out continuously.

[0031] The one-way drive assembly 4 includes a drive shaft 41 that rotates in the inner cavity of the fixed box 3 through a bearing, a first drive motor 42 is fixed to the outer side of the fixed box 3, and the output shaft of the first drive motor 42 passes through the inner cavity of the fixed box 3 and is fixedly connected to one end of the drive shaft 41, and the support roller 2 extends to one end of the fixed box 3 and is fixed with a driven bevel gear 43, and a drive bevel gear 44 that meshes with the driven bevel gear 43 is fixed on the drive shaft 41. The drive shaft 41 is driven by the first drive motor 42 to rotate the drive bevel gear 44, and then the driven bevel gear 43 is used to drive the support roller 2 to rotate synchronously in the same direction, so as to assist in the transportation of the steel bars and ensure that the end of the steel bars will not be unable to move due to interference with the support roller 2.

[0032] The conveying assembly 8 includes a conveying motor 81 fixed to the outside of the fixed frame 5. The output shaft of the conveying motor 81 passes through the inner cavity of the fixed frame 5 and is fixedly connected to the end of a group of driving rollers 6. The end of the driving roller 6 away from the conveying motor 81 passes through the outside of the fixed frame 5 and is fixed with a pulley 82. The outer side of the pulley 82 is connected to a transmission belt 83. The conveying motor 81 drives a group of driving rollers 6 to rotate, and then the rotating driving rollers 6 drive another group of driving rollers 6 to rotate in the same direction through the pulley 82 and the transmission belt 83, so as to cooperate with the pressure roller 7 to convey the steel bars.

[0033] The pressure roller 7 rotates in the inner cavity of the movable frame 17 through the bearing. An electric push rod 18 is fixed on the top of the fixed frame 5. The piston rod of the electric push rod 18 penetrates into the inner cavity of the fixed frame 5 and is fixedly connected to the top of the movable frame 17. The movable frame 17 is driven by the electric push rod 18 to move up and down, and the height of the pressure roller 7 is adjusted. Then, the steel bars are transported in cooperation with the rotation of the driving roller 6, and it is convenient to clamp and transport steel bars of different sizes.

[0034] The adjusting assembly 15 includes an adjusting motor 151 fixed to one side of the inner cavity of the box body 12, and the output shaft of the adjusting motor 151 is fixed with a bidirectional threaded rod 152, and the other end of the bidirectional threaded rod 152 rotates on the other side of the inner cavity of the box body 12 through a bearing, and the outer side of the bidirectional threaded rod 152 is threadedly connected with two groups of threaded sleeves, and the outer side of the threaded sleeve is fixed with a movable block 153 that fits the inner wall of the box body 12, and a through groove is provided at the bottom of the box body 12, and the bracket 13 passes through the through groove and is fixed to the bottom of the movable block 153, and the bidirectional threaded rod 152 is driven to rotate by the adjusting motor 151, and then the two groups of movable blocks 153 are driven to move toward each other in cooperation with the threaded sleeve, so as to adjust the wheelbase of the two groups of brackets 13 and the supporting gear 14, so as to facilitate the adjustment of the distance between the upper twisting plate 9 and the lower twisting plate 10, corresponding to the position of the movable frame 17, and can process steel bars of different sizes.

[0035] The reciprocating drive assembly 16 includes a limit frame 161 fixed on the side wall of the fixed frame 5, the lower twist plate 10 is located in the inner cavity of the limit frame 161, and a limit groove 162 is provided on the side of the lower twist plate 10 away from the fixed frame 5. The inner cavity of the limit frame 161 is fixed with a limit block 163 extending to the inner cavity of the limit groove 162 and sliding in the limit groove 162. A second drive motor 164 is fixed to the bottom of the limit frame 161, and a drive gear 165 is fixed to the output shaft of the second drive motor 164. The bottom of the lower twist plate 10 is provided with a tooth groove 16 6. The driving gear 165 passes through the limit frame 161 and meshes with the lower twist plate 10 through the tooth groove 166. The limit frame 161 cooperates with the limit block 163 and the limit groove 162 to limit the lower twist plate 10 to prevent the lower twist plate 10 from moving up and down. Then the second driving motor 164 drives the driving gear 165 to drive the lower twist plate 10 through the tooth groove 166. Then the upper twist plate 9 moves in the opposite direction under the adjustment of the supporting gear 14 and the connecting belt 11, and moves from the upper and lower sides of the steel bar to rotate the steel bar in situ.

[0036] The driving shaft 41 includes multiple groups of movable shafts 411, and a universal joint 412 is fixed to the end of the movable shaft 411. The outer side of the movable shaft 411 is rotatably connected to a support plate 413 through a bearing. The support plate 413 is fixed to the inner cavity of the fixed box 3, and the driving bevel gear 44 is fixed to the outer side of the movable shaft 411. By setting the structure of the driving shaft 41, it is ensured that the driving shaft 41 uses the driving bevel gear 44 to drive the support rollers 2 that are not on the same plane.

[0037] The inner cavity of the fixed frame 5 is provided with a slide groove 19, and the inner cavity of the slide groove 19 is slidably connected with a slider 20. The opposite side of the slider 20 is fixed to the outer side of the movable frame 17. By sliding the slider 20 in the inner cavity of the slide groove 19, it is convenient to limit the movable frame 17 and maintain the stability of the movable frame 17 and the pressure roller 7 during the up and down movement.

[0038] A fixing frame 21 is fixed to the side of the movable frame 17, and the bottom of the fixing frame 21 is attached to the top of the upper twisting plate 9. The movable frame 17 and the upper twisting plate 9 are linked through the fixing frame 21 to ensure that the steel bars are stably clamped.

[0039] A plurality of groups of grooves 22 are provided on the outer sides of the support roller 2 and the driving roller 6, and anti-slip convex strips 23 are fixed to the inner cavities of the grooves 22. The steel bars can be placed in an orderly manner through the grooves 22 to prevent adjacent steel bars from interfering with each other. At the same time, the anti-slip convex strips 23 increase the friction between the support roller 2 and the driving roller 6 and the steel bars, thereby facilitating the transportation of the steel bars.

[0040] When in use, the steel bar is passed between the upper twist plate 9 and the lower twist plate 10, and then extended from between the pressure roller 7 and the driving roller 6 toward the tank body 1, the electric push rod 18 is started, and the electric push rod 18 drives the movable frame 17 to move downward, so that the pressure roller 7 squeezes the steel bar and fits the driving roller 6. At the same time, the movable frame 17 drives the upper twist plate 9 to move downward through the fixed frame 21, and clamps the steel bar with the lower twist plate 10, and then the adjustment motor 151 is started, and the adjustment motor 151 drives the bidirectional threaded rod 152 to rotate, and the threaded sleeve is used to drive the two groups of movable blocks 153 and the bracket 13 to move outward, increase the distance between the supporting gears 14, and tighten the connecting belt 11, and start the conveying motor 81, and the conveying motor 81 drives a group of driving rollers 6 to rotate, and then drives another group of driving rollers 6 to rotate through the pulley 82 and the transmission belt 83, and cooperates with The pressure roller 7 conveys the steel bars. As the steel bars are transferred to the top of the tank body 1, the steel bars are bent downward by gravity and fit onto the top of the support roller 2. Then the first drive motor 42 is started, and the first drive motor 42 drives the drive shaft 41 to rotate. The drive shaft 41 drives the drive bevel gear 44 to use the driven bevel gear 43 to synchronously drive the support roller 2 in the same direction to convey the steel bars inside the tank body 1. At the same time, the second drive motor 164 is started, and the second drive motor 164 drives the drive gear 165 to rotate. The drive gear 165 drives the lower twist plate 10 to move through the tooth groove 166. Then the upper twist plate 9 moves in the opposite direction with the cooperation of the connecting belt 11 and the support gear 14, driving the steel bars to rotate and controlling the speed of steel bar transportation. The longer steel bars can be immersed in the pickling tank section by section for pickling treatment.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel bar pickling tank, comprising a tank body (1) for pickling steel bars, characterized in that: The inner cavity of the tank body (1) is rotatably connected to a plurality of groups of support rollers (2) via bearings, one end of the support roller (2) penetrates the outer side of the tank body (1) and extends into a fixed box (3), a one-way drive assembly (4) is arranged in the fixed box (3), a fixed frame (5) is fixed on one side of the tank body (1), the inner cavity of the fixed frame (5) is rotatably connected to two groups of drive rollers (6) via bearings, a pressure roller (7) is arranged in the inner cavity of the fixed frame (5) above the drive roller (6), a conveying assembly (8) for conveying steel bars is arranged on the outer side of the fixed frame (5), and a side of the fixed frame (5) away from the tank body (1) is movably provided with a plurality of support rollers (2) for conveying steel bars. An upper twisting plate (9) and a lower twisting plate (10) are provided, and the ends of the upper twisting plate (9) and the lower twisting plate (10) are connected with a connecting belt (11). A box body (12) fixed to the side of a fixed frame (5) is arranged above the upper twisting plate (9), and the inner cavity of the box body (12) is provided with two groups of brackets (13). A supporting gear (14) meshing with the connecting belt (11) is rotatably arranged on the bracket (13), and an adjusting component (15) for adjusting the axial center distance of the supporting gear (14) is arranged in the box body (12). A reciprocating driving component (16) for driving the upper twisting plate (9) and the lower twisting plate (10) to move toward each other is arranged at the bottom of the lower twisting plate (10).

2. A steel pickling tank according to claim 1, characterized in that: The one-way drive assembly (4) comprises a drive shaft (41) which rotates in the inner cavity of a fixed box (3) through a bearing, a first drive motor (42) is fixed on the outer side of the fixed box (3), an output shaft of the first drive motor (42) passes through the inner cavity of the fixed box (3) and is fixedly connected to one end of the drive shaft (41), a driven bevel gear (43) is fixed to one end of the support roller (2) extending to the fixed box (3), and a drive bevel gear (44) meshing with the driven bevel gear (43) is fixed on the drive shaft (41).

3. A steel pickling tank according to claim 1, characterized in that: The conveying assembly (8) comprises a conveying motor (81) fixed to the outside of the fixed frame (5); the output shaft of the conveying motor (81) passes through the inner cavity of the fixed frame (5) and is fixedly connected to the end of a group of driving rollers (6); one end of the driving roller (6) away from the conveying motor (81) passes through the outside of the fixed frame (5) and is fixed with a pulley (82); the outer side of the pulley (82) is connected to a transmission belt (83).

4. A steel pickling tank according to claim 1, characterized in that: The pressure roller (7) rotates in the inner cavity of the movable frame (17) via a bearing, and an electric push rod (18) is fixed to the top of the fixed frame (5). The piston rod of the electric push rod (18) penetrates the inner cavity of the fixed frame (5) and is fixedly connected to the top of the movable frame (17).

5. A steel pickling tank according to claim 1, characterized in that: The adjustment assembly (15) comprises an adjustment motor (151) fixed to one side of the inner cavity of the box body (12); a bidirectional threaded rod (152) is fixed to the output shaft of the adjustment motor (151); the other end of the bidirectional threaded rod (152) is rotated on the other side of the inner cavity of the box body (12) through a bearing; two groups of threaded sleeves are threadedly connected to the outer side of the bidirectional threaded rod (152); a movable block (153) that is in contact with the inner wall of the box body (12) is fixed to the outer side of the threaded sleeve; a through slot is provided at the bottom of the box body (12); the bracket (13) passes through the through slot and is fixed to the bottom of the movable block (153).

6. A steel pickling tank according to claim 1, characterized in that: The reciprocating drive assembly (16) comprises a limit frame (161) fixed on the side wall of the fixed frame (5); the lower twist plate (10) is located in the inner cavity of the limit frame (161); a limit groove (162) is provided on the side of the lower twist plate (10) away from the fixed frame (5); a limit block (163) is fixed in the inner cavity of the limit frame (161) and extends to the inner cavity of the limit groove (162) and slides in the limit groove (162); a second drive motor (164) is fixed at the bottom of the limit frame (161); a drive gear (165) is fixed to the output shaft of the second drive motor (164); a tooth groove (166) is provided at the bottom of the lower twist plate (10); the drive gear (165) passes through the limit frame (161) and meshes with the lower twist plate (10) through the tooth groove (166).

7. A steel pickling tank according to claim 2, characterized in that: The driving shaft (41) comprises a plurality of movable shafts (411), the ends of the movable shafts (411) are fixed with universal joints (412), the outer sides of the movable shafts (411) are rotatably connected with support plates (413) via bearings, the support plates (413) are fixed to the inner cavity of the fixed box (3), and the driving bevel gear (44) is fixed to the outer sides of the movable shafts (411).

8. A steel pickling tank according to claim 1, characterized in that: The inner cavity of the fixed frame (5) is provided with a slide groove (19), the inner cavity of the slide groove (19) is slidably connected with a slider (20), and the facing side of the slider (20) is fixed to the outer side of the movable frame (17).

9. A steel pickling tank according to claim 4, characterized in that: A fixing frame (21) is fixed to the side of the movable frame (17), and the bottom of the fixing frame (21) is attached to the top of the upper twisting plate (9).

10. A steel pickling tank according to claim 1, characterized in that: Multiple groups of grooves (22) are provided on the outer sides of the support roller (2) and the driving roller (6), and anti-slip convex strips (23) are fixed to the inner cavities of the grooves (22).

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