Adjustable pickling tank for tinned sheet production line

Abstract

The utility model relates to tinned sheet production technical field especially relates to a kind of adjustable pickling tank for tinned sheet production line, including pickling tank and the adjustable support component of several settings along its length direction;Adjustable support component includes screw handle, screw rod, movable load block, hollow roll, first liquid guide slip ring, first communicating pipe, second liquid guide slip ring, second communicating pipe and suction pump.The utility model drives screw rod rotation by rotating screw handle, drives movable load block to move up and down in vertical sliding slot, to adjust the relative height of two hollow roll.This design allows operator to adjust the height of guide band gap according to strip thickness or process requirement, change the bending path of strip in tank, extend or shorten pickling time.Through the collaborative adjustment of multiple adjustable support components, wave shape or ladder shape trend can be formed, to adapt to pickling requirement of different plate shape.

Description

Technical Field

[0001] This utility model relates to the field of tin-plated sheet production technology, and in particular to an adjustable pickling tank for tin-plated sheet production lines. Background Technology

[0002] During the production of tinplate, iron oxide scale forms on the surface of the strip steel during hot rolling or storage. This oxide layer severely affects the adhesion and uniformity of the tin plating layer. Pickling tanks efficiently dissolve this oxide scale through chemical reactions with acidic solutions such as hydrochloric acid, exposing a clean metal substrate. A clean metal surface is fundamental to the tin plating process. After pickling, the surface activity of the strip steel is enhanced, allowing for more uniform tin deposition and preventing problems such as plating voids or poor adhesion. Corrosion inhibitors and mist suppressants are often added to pickling tanks to reduce acid mist volatilization, improve the production environment, and control excessive corrosion of the metal substrate. Some production lines employ closed-loop pickling systems combined with waste acid recovery technology to reduce environmental pollution. Pickling tanks are not only key pretreatment equipment in tinplate production but also directly affect the product's corrosion resistance, appearance, and processing performance.

[0003] Existing pickling tanks used in tinplate production lines have several shortcomings. First, they cannot quickly adjust the height and position of the strip or its movement within the tank as needed. Second, they cannot achieve proper circulation of the liquid between the upper and lower layers of the strip, resulting in differences in the corrosive properties of the liquid and affecting the final pickling effect. Therefore, it is necessary to optimize and improve existing pickling tanks used in tinplate production lines. Summary of the Invention

[0004] The purpose of this invention is to overcome the aforementioned problems in traditional technologies and provide an adjustable pickling tank for tin-plated sheet production lines.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution: An adjustable pickling tank for a tin-plated sheet production line includes a pickling tank and several adjustable support components arranged along its length. The pickling tank includes a pickling tank body, which is symmetrically provided with multiple sets of protruding boxes. The interior of each protruding box is provided with a vertical sliding groove that communicates with the inner cavity of the pickling tank body. The top plate of each protruding box is provided with a through hole. The adjustable support assembly includes a handle, a lead screw, a movable block, hollow rollers, a first liquid guiding slip ring, a first connecting pipe, a second liquid guiding slip ring, a second connecting pipe, and a suction pump. The handle is perforated and connected to the lead screw. A movable block, which slides and is restricted in a vertical groove, is fitted on the outside of the lead screw. Two opposite movable blocks jointly support two parallel hollow rollers. Several liquid guiding holes are opened on the outside of the hollow rollers and communicate with them. One end of each of the two hollow rollers is connected to both ends of the first connecting pipe via the first liquid guiding slip ring. The other end of each of the two hollow rollers is connected to the suction end and the output end of the suction pump via the second liquid guiding slip ring and the second connecting pipe, respectively. A guide belt gap is left between the two hollow rollers to facilitate the passage of the strip steel.

[0006] Furthermore, in the aforementioned adjustable pickling tank for tin-plated sheet production line, the pickling tank body is made of fiberglass material.

[0007] Furthermore, in the aforementioned adjustable pickling tank for tin-plated sheet production line, the movable carrier block is provided with a lead screw groove that cooperates with the lead screw.

[0008] Furthermore, in the adjustable pickling tank of the tin-plated sheet production line described above, the hollow roller shaft is provided with T-shaped connectors at both ends to facilitate communication with the corresponding liquid guiding slip ring.

[0009] Furthermore, in the aforementioned adjustable pickling tank for tinplate production line, the axial length of the hollow roller shaft is matched with the width of the pickling tank body.

[0010] Furthermore, in the aforementioned adjustable pickling tank for tinplate production line, each component of the adjustable support assembly is made of 316L stainless steel.

[0011] The beneficial effects of this utility model are: 1. By rotating the handle, the lead screw is driven to rotate, causing the movable block to move up and down within the vertical chute, thereby adjusting the relative height of the two hollow rollers. This design allows operators to quickly adjust the guide belt gap height according to strip thickness or process requirements, changing the strip's bending path within the chute and extending or shortening the pickling time. Through the coordinated adjustment of multiple adjustable support components, a wavy or stepped pattern can be formed to adapt to the pickling needs of different strip shapes.

[0012] 2. A suction pump drives the acid solution through the guide holes of the hollow roller shaft to form a forced circulation. This design overcomes the laminar flow boundary layer problem in traditional deep-tank pickling, avoiding uneven corrosion caused by differences in acid flowability between the upper and lower surfaces of the strip, such as the defect in shallow-tank pickling where the lower layer is more effective than the upper layer. The guide holes on the surface of the hollow roller shaft are evenly distributed, allowing the acid spray to cover the strip surface. Combined with the overflow design inside the tank, this further promotes turbulence and prevents over- or under-pickling caused by local concentration or temperature differences.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front view schematic diagram of the entire utility model; Figure 3 This is a schematic diagram of the pickling tank in this utility model; Figure 4 This is a schematic diagram of the adjustable support component in this utility model; Figure 5 This is a front view schematic diagram of the adjustable support component in this utility model; Figure 6 This is a schematic diagram of the flow of liquid between the upper and lower layers in this utility model; In the attached diagram, the components represented by each number are as follows: 1-Pickling tank, 101-Pickling tank body, 102-Convex box, 103-Vertical groove, 104-Perforation; 2-Adjustable support assembly, 201-Handle, 202-Screw rod, 203-Modible block, 204-Hollow roller, 205-Liquid guide hole, 206-First liquid guide slip ring, 207-First connecting pipe, 208-Second liquid guide slip ring, 209-Second connecting pipe, 210-Suction pump. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1-6 As shown, this embodiment provides an adjustable pickling tank for a tin-plated sheet production line, including a pickling tank 1 and several adjustable support components 2 arranged along its length.

[0018] In this embodiment, the pickling tank 1 includes a pickling tank body 101. The pickling tank body 101 is symmetrically provided with multiple sets of protruding boxes 102. The interior of the protruding box 102 is provided with a vertical sliding groove 103 that communicates with the inner cavity of the pickling tank body 101. The top plate of the protruding box 102 is provided with a through hole 104.

[0019] In this embodiment, the adjustable support assembly 2 includes a handle 201, a lead screw 202, a movable block 203, hollow rollers 204, a first liquid guiding slip ring 206, a first connecting pipe 207, a second liquid guiding slip ring 208, a second connecting pipe 209, and a suction pump 210. The handle 201 passes through the through hole 104 and is connected to the lead screw 202. The movable block 203, which is slidably restricted in the vertical slide groove 103, is sleeved on the outside of the lead screw 202. Two opposing movable blocks 203 jointly support two parallel hollow rollers 204. Several liquid guiding holes 205 are opened on the outside of the hollow rollers 204 and communicate with them. One end of each of the two hollow rollers 204 is connected to both ends of the first connecting pipe 207 via the first liquid guiding slip ring 206. The other ends of the two hollow rollers 204 are connected to the suction end and the output end of the suction pump 210 via the second liquid guide slip ring 208 and the second connecting pipe 209, respectively. A guide belt gap is left between the two hollow rollers 204 to facilitate the passage of the strip steel.

[0020] In this embodiment, the pickling tank body 101 is made of fiberglass material.

[0021] In this embodiment, the movable carrier block 203 has a lead screw groove that mates with the lead screw 202. One of the movable carrier blocks 203 has a first mounting cavity for easy installation of the first liquid guiding slip ring 206 and the first connecting pipe 207, and the other movable carrier block 203 has a second mounting cavity for easy installation of the second liquid guiding slip ring 208, the second connecting pipe 209 and the suction pump 210.

[0022] In this embodiment, the hollow roller shaft 204 is provided with T-shaped connectors at both ends to facilitate communication with the corresponding liquid guiding slip ring.

[0023] In this embodiment, the axial length of the hollow roller 204 is matched with the width of the pickling tank body 101.

[0024] In this embodiment, each component of the adjustable support assembly 2 is made of 316L stainless steel.

[0025] One specific application of this embodiment is: Rotating the handle 201 drives the lead screw 202 to rotate, causing the movable block 203 to move up and down within the vertical trough 103, thereby adjusting the relative height of the two hollow rollers 204. This design allows operators to quickly adjust the height of the guide belt gap according to the strip thickness or process requirements (such as increasing sag to increase immersion volume), changing the bending path of the strip in the trough, and extending or shortening the pickling time.

[0026] The screw-moving block structure ensures precise and stable adjustment. The 316L stainless steel material is corrosion-resistant and high-strength, suitable for acidic environments. Through the coordinated adjustment of multiple adjustable support components 2, a wavy or stepped pattern can be formed to adapt to the pickling requirements of different strip shapes (such as double-sided waves). The axial length of the hollow roller 204 matches the width of the pickling tank, ensuring uniform lateral force on the strip and preventing deviation. The T-shaped connector design facilitates quick installation and sealing of the liquid guide slip ring, reducing maintenance downtime.

[0027] The suction pump 210 drives the acid solution to form a forced circulation through the liquid guide hole 205 of the hollow roller shaft 204: Upper layer flow: Acid solution flows from one hollow roller shaft (as shown on the left) through the first liquid guiding slip ring 206 and the first connecting pipe 207 into another roller shaft (on the right), forming a transverse circulation.

[0028] Lower layer flow: The second liquid guide slip ring 208 and the second connecting pipe 209 draw the acid from the lower layer back to the suction pump, realizing longitudinal circulation.

[0029] This design overcomes the laminar flow boundary layer problem inherent in traditional deep-tank pickling, avoiding uneven corrosion on the upper and lower surfaces of the strip due to differences in acid flowability, such as the lower layer's superior effect compared to the upper layer in shallow-tank pickling. The evenly distributed guide holes 205 on the hollow roller surface ensure that the acid spray covers the strip surface. Combined with the overflow design within the tank, this further promotes turbulence and prevents over- or under-pickling caused by localized concentration or temperature differences.

[0030] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An adjustable pickling tank for a tin-plated sheet production line, characterized in that, Includes a pickling tank and several adjustable support components arranged along its length; The pickling tank includes a pickling tank body, which is symmetrically provided with multiple sets of protruding boxes. The interior of each protruding box is provided with a vertical sliding groove that communicates with the inner cavity of the pickling tank body. The top plate of each protruding box is provided with a through hole. The adjustable support assembly includes a handle, a lead screw, a movable block, hollow rollers, a first liquid guiding slip ring, a first connecting pipe, a second liquid guiding slip ring, a second connecting pipe, and a suction pump. The handle is perforated and connected to the lead screw. A movable block, which slides and is restricted in a vertical groove, is fitted on the outside of the lead screw. Two opposite movable blocks jointly support two parallel hollow rollers. Several liquid guiding holes are opened on the outside of the hollow rollers and communicate with them. One end of each of the two hollow rollers is connected to both ends of the first connecting pipe via the first liquid guiding slip ring. The other end of each of the two hollow rollers is connected to the suction end and the output end of the suction pump via the second liquid guiding slip ring and the second connecting pipe, respectively. A guide belt gap is left between the two hollow rollers to facilitate the passage of the strip steel.

2. The adjustable pickling tank for a tin-plated sheet production line according to claim 1, characterized in that, The pickling tank body is made of fiberglass.

3. The adjustable pickling tank for a tin-plated sheet production line according to claim 1, characterized in that, The movable block has a lead screw groove that mates with the lead screw.

4. An adjustable pickling tank for a tin-plated sheet production line according to claim 1, characterized in that, The hollow roller shaft is provided with T-shaped connectors at both ends to facilitate communication with the corresponding liquid guiding slip rings.

5. An adjustable pickling tank for a tin-plated sheet production line according to claim 1, characterized in that, The axial length of the hollow roller shaft is matched with the width of the pickling tank body.

6. An adjustable pickling tank for a tin-plated sheet production line according to claim 1, characterized in that, Each component of the adjustable support assembly is made of 316L stainless steel.

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