Pickling tank capable of customizing flow direction of acid liquid

Abstract

The present application relates to pickling device technical field, especially to a kind of pickling pool that can define acid liquid flow direction.The technical scheme of the present application includes: reaction pool;The bottom of reaction pool is fixedly connected with treatment pool, and the bottom of reaction pool is provided with flow channel;Reaction pool front and back two sides side wall are rotatably connected with roll shaft;The left and right side walls of reaction pool are fixedly connected with conveying pipe;Two sides of conveying pipe are arranged with spray head at equal intervals;Reduction bin is fixedly connected in treatment pool.The pickling liquid of the present application is sprayed on the surface of steel belt in reverse direction in conveying, to avoid the operation interruption and rhythm control problem caused by traditional pickling pool intermittent soaking, so that steel belt can be fully pickled in continuous conveying state, which significantly improves pickling operation efficiency, and facilitates rhythm matching with upstream and downstream processes;Meanwhile, through reduction treatment to pickling liquid, its recycling is realized, and the economy of the present application is improved.

Description

Technical Field

[0001] This invention relates to the field of pickling equipment, and more particularly to a pickling tank that can customize the direction of acid flow. Background Technology

[0002] During the processing of steel strips, pickling is often required to remove surface oxide scale, rust and other impurities, thereby providing a good substrate surface quality for subsequent surface treatment processes.

[0003] In actual pickling operations of steel strip, traditional pickling tanks mostly adopt an immersion structure, where the steel strip needs to be completely submerged in the pickling solution for reaction. In this method, to achieve thorough pickling, the steel strip often needs to be intermittently stopped within the tank to maintain sufficient immersion time. However, during the pickling reaction, the concentration of the pickling solution continuously decreases as the reaction progresses, causing the optimal immersion time required for the steel strip to change dynamically. Using a fixed intermittent stopping method makes it difficult to simultaneously ensure sufficient reaction and precise control of the transfer rhythm. If the stopping time is insufficient, the pickling reaction on the steel strip surface will be incomplete, which can easily affect the surface quality of the product and subsequent processing performance. If an excessively long maximum stopping time is set to avoid quality risks, although it can ensure sufficient reaction, it will significantly extend the cycle time of a single batch and reduce the overall production line efficiency. Summary of the Invention

[0004] To address the aforementioned deficiencies in the prior art, this invention provides an acid pickling tank with customizable acid flow direction that can improve the continuity of steel strip pickling operations, aiming to enhance pickling efficiency while ensuring both cost and effectiveness.

[0005] The technical solution is as follows: A pickling tank with customizable acid flow direction includes: a reaction tank in which a steel strip undergoes pickling operations; a treatment tank is fixedly connected to the bottom of the reaction tank, and a flow channel is provided at the bottom of the reaction tank to allow the reacted pickling solution in the reaction tank to flow autonomously into the treatment tank; rollers are rotatably connected to the front and rear side walls of the reaction tank, and the rollers are used to guide the steel strip into the lower part of the reaction tank; conveying pipes are fixedly connected to the left and right side walls of the reaction tank; nozzles are evenly spaced on both sides of the conveying pipes, the nozzles are connected to the conveying pipes, and they face the surface of the steel strip guided by the rollers and are opposite to the direction of movement of the steel strip; a reduction chamber is fixedly connected inside the treatment tank, the inlet of the reduction chamber is connected to the treatment tank, the reduction chamber is used to restore the reacted pickling solution, and the outlet of the reduction chamber is connected to the conveying pipe, which can actively transport the reduced pickling solution to the conveying pipe.

[0006] As a further preferred option, the nozzle angle is controllably adjustable; the pickling tank also includes: a flexible hose fixed and connected between each nozzle and its corresponding delivery pipe, the flexible hose being able to deform synchronously when the nozzle angle changes.

[0007] As a further preferred embodiment, the flow channels are symmetrically arranged on the front and rear sides of the bottom of the reaction tank; the pickling tank also includes: a control plate slidably connected to the bottom of the reaction tank and arranged corresponding to the positions of each flow channel, the control plate controlling the opening and closing of the flow channels by moving; two sets of control components are arranged symmetrically on the front and rear sides of the reaction tank and connected to the control plate on the corresponding side, for controlling the movement of the control plate.

[0008] As a further preferred embodiment, the pickling tank further includes: mounting shafts rotatably connected to the upper and lower sides of the conveying pipe corresponding to each nozzle position; mounting rings fixedly connected to the outside of the nozzles; a control rod is provided between the mounting ring and the mounting shaft corresponding to the same nozzle, one end of the control rod is fixedly connected to the mounting ring, and the other end is fixedly connected to the mounting shaft, and each nozzle is provided with two sets of control rods; threaded rods are rotatably connected to the inner sidewalls of the left and right sides of the reaction tank, the threads on the threaded rods are segmented, and the position of each thread segment corresponds one-to-one with each nozzle; control seats are threadedly connected to each thread segment on the threaded rods on both sides; connecting rods are rotatably connected to the upper and lower sides of each control seat, and each connecting rod slides in cooperation with the control rods provided on the upper and lower sides of the corresponding nozzles; a first motor is fixedly connected to the outer wall of the front side of the reaction tank, and its output end is coaxially fixed with one of the threaded rods; a first transmission belt set is provided between the threaded rods on both sides.

[0009] As a further preferred solution, the control component is connected between the control board and the mounting shaft, synchronously transmitting the control power of the nozzle to the control board; Each set of control components includes: racks slidably connected to the left and right sides of the bottom of the reaction tank, the racks being connected to the control board to drive the control board to move synchronously; drive shafts are rotatably connected to the left and right sides of the bottom wall of the reaction tank, and the two drive shafts are coaxially fixed to the mounting shafts at the ends of the conveying pipes on both sides; a first gear is fixedly connected to the lower part of each drive shaft, and the first gear meshes with the rack.

[0010] As a further preferred embodiment, the rack and the control plate are slidably connected; the pickling tank further includes a pressure spring fixedly connected between the control plate and the rack, used to apply closing pressure to the control plate.

[0011] As a further preferred embodiment, the pickling tank further includes: a mounting plate fixedly connected to the bottom of the reaction tank for providing independent installation space; a flow assembly disposed within the mounting plate, the upper part of which is located within the reaction tank for controlling the pickling solution to flow in the opposite direction to the steel strip within the pickling tank, and at least two sets of the flow assembly are provided; and a drive assembly disposed within the mounting plate for driving the flow assembly to rotate to adapt to different conveying directions of the steel strip. Each flow assembly includes: a mounting frame rotatably connected to the bottom of the reaction tank; a rotating wheel rotatably connected to the upper part of the mounting frame, the rotating wheel rotating to promote the directional flow of pickling solution; a second motor fixedly connected to the lower part of the mounting frame; a first gear ring fixedly connected to the outer ring of the rotating wheel; a geared disc rotatably connected inside the mounting frame, the geared disc meshing with the first gear ring; and a second transmission belt assembly provided between the output shaft of the second motor and the geared disc.

[0012] As a further preferred embodiment, the drive assembly includes: a second gear ring fixedly connected to the outside of the mounting frame; a toothed belt wound between the second gear rings of each set of mounting frames, the toothed belt meshing with all the second gear rings, the toothed belt being located within the mounting space of the mounting plate; an electric push rod fixedly connected inside the mounting plate; a connecting block fixedly connected to the toothed belt, the push rod end of the electric push rod being fixedly connected to the connecting block.

[0013] The present invention has the following advantages: By spraying the pickling solution in reverse onto the surface of the steel strip during transport, the present invention avoids the problems of operation interruption and rhythm control caused by the intermittent soaking required by traditional pickling tanks, so that the steel strip can be fully pickled in a continuous transport state, which not only significantly improves the pickling operation efficiency, but also facilitates the rhythm matching with upstream and downstream processes; at the same time, by reducing the pickling solution, its recycling is achieved, which improves the economic efficiency of the present invention.

[0014] This invention, through adjustable reverse spray angle and flow channel opening and closing control, can adapt to different conveying needs without adjusting the steel belt loading direction, thus overcoming the problem of limited equipment layout and poor operational flexibility caused by the single steel belt conveying direction in traditional pickling tanks. At the same time, by extending the residence time of pickling solution in the reaction tank, the reaction sufficiency is further improved, enhancing the adaptability and comprehensiveness of the invention under working conditions while ensuring pickling quality.

[0015] This invention achieves mechanical linkage through nozzle reversal control and flow channel opening and closing control, which significantly improves the ease of operation and avoids the adverse effects on the pickling effect of steel strip caused by incorrect flow channel opening and closing.

[0016] This invention, by setting an adjustable-angle rotating wheel, can flexibly control the reverse flow of pickling solution according to the direction of steel strip conveying, thereby overcoming the problems of poor pickling solution flow and insufficient reaction time with steel strip in traditional pickling tanks. At the same time, the flow component and the drive component work together to ensure that the flow direction of pickling solution always matches the reverse direction of steel strip movement, further enhancing the adaptability and operational flexibility of this invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2This is a partial cross-sectional view of the internal structure of the reaction tank and treatment tank in this invention.

[0019] Figure 3 This is a schematic diagram showing the position and structure of the nozzle and flow channel in the reaction tank in this invention.

[0020] Figure 4 This is a schematic diagram showing the position and structure of the nozzle, control rod, and connecting rod in this invention.

[0021] Figure 5 This is a schematic diagram of the connection structure of the nozzle, control rod, and connecting rod in this invention.

[0022] Figure 6 This is a schematic diagram showing the position and structure of the control board and control components in this invention.

[0023] Figure 7 This is a schematic diagram of the connection structure of the mounting shaft, control board and control components in this invention.

[0024] Figure 8 This is a cross-sectional view showing the position and structure of the flow component and the drive component in the reaction tank in this invention.

[0025] Figure 9 This is a cross-sectional view of the connection structure between the flow component and the drive component in this invention.

[0026] Wherein: 101-Reaction tank, 102-Treatment tank, 103-Flow channel, 104-Control board, 105-Roller, 106-Conveying pipe, 107-Nozzle, 108-Reduction chamber, 201-Hose, 202-Mounting shaft, 203-Mounting ring, 204-Control rod, 205-Threaded rod, 206-Control seat, 207-Connecting rod, 208-First motor, 209-First transmission belt assembly, 301-Rack, 302-Pressure spring, 303-Transmission shaft, 304-First gear, 401-Mounting plate, 402-Mounting frame, 403-Rotating wheel, 404-Second motor, 405-First gear ring, 406-Gear disc, 407-Second transmission belt assembly, 501-Second gear ring, 502-Gear belt, 503-Electric push rod, 504-Connecting block. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0028] Example: A pickling tank with customizable acid flow direction, such as... Figures 1-3 As shown, the system includes: a reaction tank 101 in which the steel strip undergoes pickling; a treatment tank 102 is fixedly installed at the bottom of the reaction tank 101, and a flow channel 103 is provided at the bottom of the reaction tank 101 to allow the reacted pickling solution in the reaction tank 101 to flow autonomously into the treatment tank 102; rollers 105 are rotatably installed on both the front and rear side walls of the reaction tank 101 to guide the steel strip into the lower inner part of the reaction tank 101; and conveying pipes 106 are fixedly installed on both the left and right side walls of the reaction tank 101. Spray nozzles 107 are evenly spaced on both sides of the conveying pipe 106. The spray nozzles 107 are connected to the conveying pipe 106 and face the surface of the steel strip guided by the roller 105, and are opposite to the moving direction of the steel strip. A reduction chamber 108 is fixedly installed in the treatment tank 102. The inlet of the reduction chamber 108 is connected to the inside of the treatment tank 102. The reduction chamber 108 is used to reduce and restore the reacted pickling solution. The outlet of the reduction chamber 108 is connected to the conveying pipe 106 and can actively transport the reduced pickling solution to the conveying pipe 106.

[0029] When using this pickling tank, add an appropriate amount of pickling solution to the reduction chamber 108, wrap the steel strip around each roller 105, and have its end controlled by the transport device to be transferred to the subsequent processing operation; then start the pickling operation, the reduction chamber 108 transports the highly active pickling solution to the conveying pipe 106, and the conveying pipe 106 sprays the pickling solution evenly onto the surface of the steel strip through each nozzle 107. Because the nozzle 107 is oriented in the opposite direction to the steel strip's movement, the pickling solution and the steel strip surface move relative to each other, significantly extending the contact reaction time between the pickling solution and the steel strip. This also enhances the flow and renewal of the pickling solution, thereby improving the reaction effect and reaction rate, allowing the steel strip to complete the pickling operation under continuous conveying conditions. After the reaction, the pickling solution flows into the treatment tank 102 through the flow channel 103, and then enters the reduction chamber 108 for reduction reaction to restore its activity. After that, it is transported back to the steel strip surface for recycling, improving the utilization rate of the pickling solution. As the pickling operation proceeds, it is necessary to periodically replenish the reduction chamber 108 with new pickling solution to ensure the reaction concentration of the pickling solution.

[0030] This pickling tank avoids the operational interruptions and rhythm control problems caused by the intermittent immersion required in traditional pickling tanks by spraying the pickling solution in a reverse direction onto the surface of the steel strip during transport. This allows the steel strip to be fully pickled during continuous transport, which significantly improves the efficiency of pickling operations and facilitates rhythm matching with upstream and downstream processes. At the same time, the pickling solution is recycled through reduction treatment, which enhances the economic efficiency of this pickling tank.

[0031] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, flow channels 103 are symmetrically arranged on the front and rear sides of the bottom of the reaction tank 101; this pickling tank also includes: a control plate 104 slidably installed at the bottom of the reaction tank 101 and corresponding to the position of each flow channel 103, the control plate 104 realizes the controllable opening and closing of the flow channels 103 by moving; each nozzle 107 is fixedly connected to the corresponding delivery pipe 106 by a flexible hose 201, the flexible hose 201 can deform synchronously when the angle of the nozzle 107 changes; mounting shafts 202 are rotatably installed on the upper and lower sides of the delivery pipe 106 corresponding to the position of each nozzle 107; a mounting ring 203 is fixedly installed on the outside of the nozzle 107; the mounting ring 203 corresponding to the same nozzle 107 is connected to the mounting shaft 202. A control rod 204 is provided between shafts 202. One end of the control rod 204 is fixedly connected to the mounting ring 203, and the other end is fixedly connected to the mounting shaft 202. Each nozzle 107 is provided with two sets of control rods 204, one above the other. Threaded rods 205 are rotatably installed inside the left and right side walls of the reaction tank 101. The threads on the threaded rods 205 are segmented, and the position of each thread segment corresponds one-to-one with each nozzle 107. Control seats 206 are threadedly installed at each thread segment on the threaded rods 205 on both sides. Connecting rods 207 are rotatably installed on the upper and lower sides of each control seat 206. Each connecting rod 207 slides in cooperation with the control rods 204 provided on the upper and lower sides of the corresponding nozzle 107.

[0032] like Figure 2 , Figure 4 and Figure 5 As shown, the pickling tank also includes: a first motor 208 fixedly installed on the outer wall of the front side of the reaction tank 101, the output end of which is coaxially fixed with one of the threaded rods 205; a first transmission belt group 209 is provided between the threaded rods 205 on both sides to achieve synchronous rotation drive.

[0033] In use, starting the first motor 208 drives the threaded rod 205 to rotate forward and backward, which can drive all control seats 206 to move back and forth synchronously. The control seat 206 drives the mounting ring 203 to move through the sliding cooperation between the connecting rod 207 and the control rod 204, thereby adjusting the orientation of the nozzle 107 to adapt to the steel strip in different directions of movement. Thus, the layout of this pickling tank does not need to be adjusted due to changes in the loading direction of the steel strip, ensuring that the nozzle 107 always sprays pickling liquid onto the steel strip in a reverse manner, significantly improving the operational adaptability of this pickling tank. Simultaneously, the opening and closing of the corresponding flow channel 103 is controlled according to the spray direction of the nozzle 107—achieved through the moving control plate 104. Specifically, when the steel strip moves from front to back and the nozzle 107 faces forward, i.e., sprays pickling liquid forward, the front flow channel 103 is opened and the rear flow channel 103 is closed, so that the pickling liquid after reaction also flows forward for discharge. In this way, the pickling tank achieves directional flow control of pickling liquid through the dual control of the spray direction of the nozzle 107 and the discharge direction of the waste liquid.

[0034] This pickling tank, controlled by an adjustable reverse spray angle and the opening and closing of the flow channel 103, can adapt to different conveying needs without adjusting the steel belt loading direction. This overcomes the problem of limited equipment layout and poor operational flexibility caused by the single steel belt conveying direction in traditional pickling tanks. At the same time, by extending the residence time of the pickling solution in the reaction tank 101, the reaction sufficiency is further improved, enhancing the adaptability and comprehensiveness of this pickling tank while ensuring pickling quality.

[0035] like Figure 2 , Figure 6 and Figure 7 As shown, this pickling tank also includes: two sets of control components disposed at the bottom of the reaction tank 101. The two sets of control components are symmetrically arranged on the front and rear sides of the reaction tank 101 and are respectively connected to the control plate 104 on the corresponding side, for controlling the movement of the control plate 104 to realize the opening and closing of the flow channel 103; the control components are connected between the control plate 104 and the mounting shaft 202, and synchronously transmit the control power of the nozzle 107 to the control plate 104 to form a mechanical linkage and realize the optimization of the power structure; Each set of control components includes: racks 301 slidably mounted on the left and right sides of the bottom of the reaction tank 101, the racks 301 being slidably connected to the control plate 104; a pressure spring 302 is fixedly installed between the control plate 104 and the racks 301, used to apply closing pressure to the control plate 104 to improve the stability of the control plate 104 when closing the flow channel 103; drive shafts 303 are rotatably mounted on the left and right sides of the bottom wall of the reaction tank 101, and the two drive shafts 303 are coaxially fixed to the mounting shafts 202 at the ends of the two conveying pipes 106 on both sides; a first gear 304 is fixedly installed on the lower part of each drive shaft 303, and the first gear 304 meshes with the racks 301.

[0036] When the nozzle 107 is reoriented, the mounting shaft 202 rotates, driving the first gear 304 to rotate. The first gear 304, through its transmission with the rack 301, drives the control plate 104 to move, thus achieving mechanical linkage between the nozzle 107 reversal control and the flow channel 103 opening and closing control. This significantly improves the ease of operation of the pickling tank and avoids adverse effects on the steel strip pickling effect caused by incorrect opening and closing of the flow channel 103. When the control plate 104 is controlled to close the flow channel 103, the pressure spring 302 is simultaneously compressed, using its reset tendency to maintain the control plate 104 in a stable closed state, improving the effectiveness of the control plate 104. When the control plate 104 opens the flow channel 103, the pressure spring 302 automatically returns to its original position, ensuring smooth and reliable operation.

[0037] like Figure 1 , Figure 2 , Figure 8 and Figure 9As shown, this pickling tank also includes: a mounting plate 401 fixedly installed at the bottom of the reaction tank 101 to provide independent installation space; a flow assembly disposed within the mounting plate 401, the upper part of which is located within the reaction tank 101, used to control the pickling solution to flow in the opposite direction to the steel strip within the pickling tank, thereby improving the fluidity of the pickling solution and extending the contact reaction time between the pickling solution and the steel strip; and a drive assembly disposed within the mounting plate 401 to drive the flow assembly to rotate to adapt to different conveying directions of the steel strip. Each flow assembly includes: a mounting frame 402 rotatably mounted at the bottom of the reaction tank 101; a rotating wheel 403 rotatably mounted on the upper part of the mounting frame 402, the rotating wheel 403 rotating to promote the directional flow of pickling solution; a second motor 404 fixedly mounted on the lower part of the mounting frame 402; a first gear ring 405 fixedly mounted on the outer ring of the rotating wheel 403; a gear disc 406 rotatably mounted inside the mounting frame 402, the gear disc 406 meshing with the first gear ring 405; and a second transmission belt assembly 407 provided between the output shaft of the second motor 404 and the gear disc 406.

[0038] like Figure 2 , Figure 8 and Figure 9 As shown, the drive assembly includes: a second gear ring 501 fixedly installed outside the mounting frame 402; a toothed belt 502 is wound around the second gear rings 501 of each group of mounting frames 402, the toothed belt 502 meshes with all the second gear rings 501, and the toothed belt 502 is located in the mounting space of the mounting plate 401; an electric push rod 503 is fixedly installed inside the mounting plate 401; a connecting block 504 is fixedly installed on the toothed belt 502, and the push rod end of the electric push rod 503 is fixedly connected to the connecting block 504.

[0039] In use, the second motor 404 is started, driving the gear disc 406 to rotate via the second transmission belt assembly 407. The gear disc 406 then drives the rotating wheel 403 to rotate stably via the first gear ring 405, thus controlling the directional flow of the pickling solution. Activating the electric push rod 504 extends it, driving the connecting block 503 to move, causing the gear belt 502 to rotate. Through the meshing of the gear belt 502 and the second gear ring 501, the mounting frame 402 is driven to rotate, changing the overall angle of the rotating wheel 403 and adjusting the flow direction of the pickling solution to adapt to the movement direction of the steel belt.

[0040] This pickling tank, by incorporating an adjustable-angle rotating wheel 403, can flexibly control the reverse flow of the pickling solution according to the direction of the steel strip's movement, thus overcoming the problems of poor pickling solution flow and insufficient reaction time with the steel strip in traditional pickling tanks. At the same time, the flow component and the drive component work together to ensure that the flow direction of the pickling solution always matches the reverse direction of the steel strip's movement, further enhancing the pickling tank's adaptability to working conditions and operational flexibility.

[0041] The technical principles of the embodiments of the present invention have been described above with reference to specific examples. These descriptions are merely for explaining the principles of the embodiments of the present invention and should not be construed as limiting the scope of protection of the embodiments of the present invention in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of the present invention without creative effort, and these embodiments will all fall within the scope of protection of the embodiments of the present invention.

Claims

1. A pickling tank capable of customizing the direction of acid flow, characterized in that, include: A reaction tank (101) is used for pickling of steel strips. A treatment tank (102) is fixedly connected to the bottom of the reaction tank (101). A flow channel (103) is provided at the bottom of the reaction tank (101) to allow the pickling solution that has been reacted in the reaction tank (101) to flow into the treatment tank (102) autonomously. Rollers (105) are rotatably connected to the front and rear side walls of the reaction tank (101). The rollers (105) are used to guide the steel strips to be immersed in the lower part of the reaction tank (101). Conveying pipes (106) are fixedly connected to the left and right side walls of the reaction tank (101). On the side conveying pipe (106), nozzles (107) are arranged at equal intervals. The nozzles (107) are connected to the conveying pipe (106) and face the surface of the steel strip guided by the roller (105), and are opposite to the moving direction of the steel strip. A reduction chamber (108) is fixedly connected in the treatment tank (102). The inlet of the reduction chamber (108) is connected to the treatment tank (102). The reduction chamber (108) is used to reduce and restore the reacted pickling solution. The outlet of the reduction chamber (108) is connected to the conveying pipe (106) and can actively transport the reduced pickling solution to the conveying pipe (106).

2. The pickling tank with customizable acid flow direction as described in claim 1, characterized in that, The angle of the nozzle (107) is controllable and adjustable; the pickling tank also includes: a hose (201) fixed and connected between each nozzle (107) and the corresponding delivery pipe (106), the hose (201) being able to deform synchronously when the angle of the nozzle (107) changes.

3. The pickling tank with customizable acid flow direction as described in claim 2, characterized in that, The flow channels (103) are symmetrically arranged on the front and rear sides of the bottom of the reaction tank (101); the pickling tank also includes: a control plate (104) slidably connected to the bottom of the reaction tank (101) and arranged corresponding to the positions of each flow channel (103), the control plate (104) controls the opening and closing of the flow channels (103) by moving; two sets of control components are arranged at the bottom of the reaction tank (101), the two sets of control components are symmetrically arranged on the front and rear sides of the reaction tank (101) and respectively connected to the control plate (104) on the corresponding side, for controlling the movement of the control plate (104).

4. The pickling tank with customizable acid flow direction as described in claim 3, characterized in that, The pickling tank further includes: mounting shafts (202) rotatably connected to the upper and lower sides of the conveying pipe (106) corresponding to the positions of each nozzle (107); mounting rings (203) are fixedly connected to the outside of each nozzle (107); a control rod (204) is provided between the mounting ring (203) corresponding to the same nozzle (107) and the mounting shaft (202), one end of the control rod (204) is fixedly connected to the mounting ring (203), and the other end is fixedly connected to the mounting shaft (202), and each nozzle (107) is provided with two sets of upper and lower control rods (204); threaded rods (205) are rotatably connected to the inner side walls of the left and right sides of the reaction tank (101). The threads on the threaded rod (205) are segmented, and the position of each threaded segment corresponds to each nozzle (107). Each threaded segment on the threaded rod (205) on both sides is threadedly connected to a control seat (206). Each control seat (206) is rotatably connected to a connecting rod (207) on both the upper and lower sides. Each connecting rod (207) is slidably engaged with the control rod (204) on the upper and lower sides of the corresponding nozzle (107). The first motor (208) is fixedly connected to the outer wall of the front side of the reaction tank (101), and its output end is coaxially fixed with one of the threaded rods (205). A first transmission belt group (209) is provided between the threaded rods (205) on both sides.

5. The pickling tank with customizable acid flow direction as described in claim 4, characterized in that, The control component is connected between the control board (104) and the mounting shaft (202) to synchronously transmit the control power of the nozzle (107) to the control board (104). Each set of control components includes: racks (301) slidably connected to the left and right sides of the bottom of the reaction tank (101), racks (301) being connected to control plates (104) to drive control plates (104) to move synchronously; drive shafts (303) are rotatably connected to the left and right sides of the bottom wall of the reaction tank (101), and the two drive shafts (303) are coaxially fixed to the mounting shafts (202) at the ends of the two conveying pipes (106) respectively; a first gear (304) is fixedly connected to the lower part of each drive shaft (303), and the first gear (304) meshes with the rack (301).

6. The pickling tank with customizable acid flow direction as described in claim 5, characterized in that, The rack (301) is slidably connected to the control plate (104); the pickling tank also includes a pressure spring (302) fixedly connected between the control plate (104) and the rack (301) for applying closing pressure to the control plate (104).

7. The pickling tank with customizable acid flow direction as described in claim 6, characterized in that, The pickling tank further includes: a mounting plate (401) fixedly connected to the bottom of the reaction tank (101) for providing independent installation space; a flow assembly disposed in the mounting plate (401), the upper part of the flow assembly being located in the reaction tank (101) for controlling the pickling solution to flow in the opposite direction to the steel strip in the pickling tank, and at least two sets of the flow assembly are provided; and a drive assembly disposed in the mounting plate (401) for driving the flow assembly to rotate to adapt to different conveying directions of the steel strip. Each set of flow components includes: a mounting frame (402) rotatably connected to the bottom of the reaction tank (101); a rotating wheel (403) rotatably connected to the upper part of the mounting frame (402), the rotating wheel (403) rotating to promote the directional flow of pickling solution; a second motor (404) fixedly connected to the lower part of the mounting frame (402); a first gear ring (405) fixedly connected to the outer ring of the rotating wheel (403); a gear disc (406) rotatably connected inside the mounting frame (402), the gear disc (406) meshing with the first gear ring (405); and a second transmission belt assembly (407) provided between the output shaft of the second motor (404) and the gear disc (406).

8. The pickling tank with customizable acid flow direction as described in claim 7, characterized in that, The drive assembly includes: a second gear ring (501) fixedly connected to the outside of the mounting frame (402); a toothed belt (502) is wound between the second gear rings (501) of each set of mounting frames (402), the toothed belt (502) meshes with all the second gear rings (501), and the toothed belt (502) is located in the mounting space of the mounting plate (401); an electric push rod (503) is fixedly connected inside the mounting plate (401); a connecting block (504) is fixedly connected to the toothed belt (502), and the push rod end of the electric push rod (503) is fixedly connected to the connecting block (504).

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