Pickling device for metal surface treatment
By using partition plates and various suspension, clamping, and limiting structures in the pickling device, the problem of incomplete pickling caused by workpiece stacking is solved, and the workpieces are fully immersed and upright, thus improving pickling efficiency and applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU RUIKE SURFACE TREATMENT CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-21
AI Technical Summary
In existing pickling equipment, the stacking of workpieces causes some metal surfaces to fail to effectively contact the pickling solution, resulting in incomplete pickling.
The pickling tank is divided into multiple independent pickling chambers by partition plates. Combined with structures such as suspension frames, clamping plates, limiting columns and bearing frames, it ensures that the workpieces are completely immersed or stand upright in the pickling solution, avoiding stacking and adapting to the pickling needs of workpieces of different specifications.
It ensures the pickling effect of the workpiece, improves the pickling efficiency, adapts to the pickling needs of various workpieces, has high adaptability, and meets the pickling requirements of workpieces of different specifications.
Smart Images
Figure CN224531043U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of surface treatment apparatus, and in particular to an acid pickling apparatus for metal surface treatment. Background Technology
[0002] Pickling is a common process in metal surface treatment, mainly used to remove oxide layers, rust, and other impurities from metal surfaces to improve their cleanliness and quality. Pickling typically uses acidic solutions, such as hydrochloric acid, sulfuric acid, or phosphoric acid, which dissolve the oxides on the metal surface through a chemical reaction.
[0003] The main structure of a pickling apparatus includes: a pickling tank, which is the core container for the pickling process. Depending on the type and scale of the metal being processed, different materials (such as plastic, rubber-lined steel tanks, etc.) and sizes of tanks can be selected. The pickling solution typically contains strong acids (such as hydrochloric acid, sulfuric acid, or phosphoric acid). These acids can chemically react with oxides and other non-metallic impurities on the metal surface, converting them into substances soluble in water or other solvents, thereby removing them from the metal surface. A heating system is also required; some pickling processes need to be carried out at specific temperatures, thus necessitating a heating system to maintain the appropriate temperature of the pickling solution.
[0004] In related technologies, workpieces are typically placed in a pickling basket beforehand, and then the basket is lowered into the pickling tank using a crane. After pickling, the basket and workpiece are removed from the pickling tank together. Because the workpieces in the pickling basket are stacked together, the pickling solution has difficulty reaching the covered metal surfaces. This results in poor pickling or no pickling treatment in these areas, leading to incomplete pickling. Utility Model Content
[0005] This application provides a pickling apparatus for metal surface treatment, which can ensure the pickling effect of the workpiece, improve the pickling efficiency, meet the pickling needs of various workpieces, and has high adaptability.
[0006] The pickling apparatus for metal surface treatment provided in this application adopts the following technical solution:
[0007] A pickling apparatus for metal surface treatment includes a pickling tank with multiple partitions dividing it into a first pickling chamber. A suspension frame is mounted above the first pickling chamber, and multiple hooks are suspended from the suspension frame. The bottom of each hook is used to suspend a workpiece within the first pickling chamber. A pickling basket located below the hooks is also placed within the first pickling chamber, and a drain outlet is provided on the basket. Multiple support frames are mounted on the outer wall of the pickling basket, and the pickling tank has corresponding limiting grooves for each support frame. The support frames are respectively limited and fixed within their respective limiting grooves.
[0008] Preferably, the partition plate is provided with a clearance groove, and the suspension bracket is placed and limited within the clearance groove; the partition plate is provided with a fixing seat, the fixing seat has a through hole, the suspension bracket is placed on the fixing seat, and the suspension bracket is provided with a plug-in post inserted and fixed in the through hole.
[0009] Preferably, the partition plate divides the pickling tank into a second pickling chamber. The inner wall of the second pickling chamber is provided with multiple sets of clamping plates, and clamping grooves are formed between the clamping plates in the same set. The length of the clamping grooves extends along the depth direction of the second pickling chamber.
[0010] Preferably, a placement platform is provided on the inner wall of the second pickling chamber; the upper surface of the placement platform is inclined downwards; the upper surface of the placement platform is provided with multiple sets of limiting posts, and the limiting posts are coaxially provided with limiting rings, which are used to elevate the workpieces sleeved outside the limiting posts.
[0011] Preferably, the partition plate divides the pickling tank into a third pickling chamber, and a support frame for placing tubular workpieces is fixedly installed in the third pickling chamber. The support frames are arranged sequentially at intervals in the third pickling chamber.
[0012] Preferably, the partition plate divides the pickling tank into a fourth pickling chamber, and a drain pipe is provided between the third pickling chamber and the fourth pickling chamber. The drain pipe is used to drain the liquid in the fourth pickling chamber into the third pickling chamber.
[0013] Preferably, a filter plate is detachably installed on the inner wall of the fourth pickling chamber, and the filter plate has filter holes that pass through it.
[0014] In summary, this application includes at least one of the following beneficial technical effects:
[0015] By suspending the workpieces one by one on the hanging frame using the hooks, it can be ensured that the workpieces are completely immersed in the first pickling chamber and will not stack on each other, thus ensuring the pickling effect of the workpieces and improving the pickling efficiency.
[0016] With the limiting position of the clamping plates on both sides, the plate-shaped workpiece can be kept upright in the second pickling chamber, thereby ensuring the pickling effect on the plate-shaped workpiece and further expanding the range of applicable workpieces.
[0017] Irregularly shaped workpieces are respectively placed on the corresponding limiting posts using a fixture. At this time, the limiting ring can raise the workpieces placed outside the limiting posts, thereby effectively preventing the bottom wall of the workpiece from contacting the surface of the placement table and ensuring the pickling effect of the bottom of the workpiece.
[0018] The first pickling chamber, the second pickling chamber, the third pickling chamber, and the fourth pickling chamber can process workpieces of different specifications respectively, meeting the pickling requirements of workpieces of different specifications. They have high adaptability and can ensure the pickling effect of workpieces of different specifications. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of the embodiment of this application in which a tubular workpiece is placed;
[0020] Figure 2 yes Figure 1 A partial structural diagram;
[0021] Figure 3 yes Figure 1 A schematic diagram of a partial structural explosion;
[0022] Figure 4 yes Figure 2 The diagram highlights a partial structure of the third pickling chamber.
[0023] Explanation of reference numerals in the attached drawings: 1. Pickling tank; 2. Partition plate; 20. Clearance groove; 21. Fixing seat; 22. Insertion hole; 3. First pickling chamber; 30. Suspension frame; 31. Suspension hook; 32. Immersion basket; 33. Drain outlet; 34. Support frame; 35. Limiting groove; 36. Insertion post; 4. Second pickling chamber; 40. Clamping plate; 41. Clamping groove; 42. Placement platform; 43. Limiting post; 44. Limiting ring; 5. Third pickling chamber; 50. Support frame; 6. Fourth pickling chamber; 60. Filter plate; 61. Filter chamber; 62. Filter hole; 7. Drainage pipe. Detailed Implementation
[0024] The present application will be further described in detail below with reference to the accompanying drawings.
[0025] This application discloses an acid pickling apparatus for metal surface treatment.
[0026] Reference Figure 1 , Figure 2The pickling apparatus for metal surface treatment includes a pickling tank 1, and multiple partition plates 2 are fixedly installed inside the pickling tank 1. The partition plates 2 divide the internal space of the pickling tank 1 into four independent pickling chambers: a first pickling chamber 3, a second pickling chamber 4, a third pickling chamber 5, and a fourth pickling chamber 6.
[0027] like Figure 2 , Figure 3 As shown, a horizontally positioned suspension bracket 30 is detachably mounted above the first pickling chamber 3, with the length of the suspension bracket 30 extending along the length of the first pickling chamber 3. A clearance groove 20 is provided on the top side wall of the partition plate 2, and both ends of the suspension bracket 30 are inserted into and confined within their respective clearance grooves 20 from top to bottom. A fixing seat 21 is fixedly mounted on the outer side wall of the partition plate 2, located below the clearance groove 20. Two symmetrically arranged insertion holes 22 are passed through the fixing seat 21. The ends of the suspension bracket 30 are placed above their respective fixing seats 21, and two insertion posts 36 are fixedly mounted on the ends of the suspension bracket 30, inserted into their respective corresponding insertion holes 22 from top to bottom. The suspension bracket 30 is confined and fixed within the first pickling chamber 3 through the mutual insertion and engagement of the insertion posts 36 and the insertion holes 22, while also restricting the rotation of the suspension bracket 30 within the first pickling chamber 3, ensuring the stability of the suspension bracket 30.
[0028] like Figure 2 , Figure 3 As shown, multiple suspension hooks 31 are detachably installed on the suspension frame 30, and the suspension hooks 31 are arranged sequentially at intervals along the length of the suspension frame 30. The upper ends of the suspension hooks 31 are suspended and fixed on the suspension frame 30, and the bottom of the suspension hooks 31 are used to suspend and fix the workpieces. By suspending the workpieces sequentially on the suspension frame 30 through the suspension hooks 31, it can be ensured that the workpieces are completely immersed in the first pickling chamber 3 and will not stack on each other, thus ensuring the pickling effect of the workpieces and improving the pickling efficiency.
[0029] like Figure 2 , Figure 3 As shown, the first pickling chamber 3 also contains an immersion basket 32 located below the suspension hook 31, with numerous drain ports 33 extending through its bottom. Multiple support frames 34 are fixedly installed on the outer wall of the immersion basket 32. The pickling tank 1 is provided with corresponding limiting grooves 35 on each support frame 34, with the support frames 34 fixedly positioned from top to bottom within their respective limiting grooves 35. When a workpiece accidentally falls from the suspension hook 31, the immersion basket 32 can intercept the falling workpiece, preventing it from falling to the bottom of the first pickling chamber 3. The support frames 34 facilitate the removal of the immersion basket 32 from the first pickling chamber 3.
[0030] like Figure 2 , Figure 4As shown, multiple sets of clamping plates 40 arranged in a sequential and spaced manner are fixedly installed on the inner wall of the second pickling chamber 4. Each set of clamping plates 40 consists of two plates arranged opposite each other. A clamping groove 41 is formed between the two clamping plates 40 in the same set, and the length of the clamping groove 41 extends along the depth direction of the second pickling chamber 4. Each plate-shaped workpiece is inserted into the corresponding clamping groove 41 from top to bottom using a clamp. At this time, under the limitation of the clamping plates 40 on both sides, the plate-shaped workpiece can be kept upright in the second pickling chamber 4, thereby ensuring the pickling effect on the plate-shaped workpiece and further expanding the range of applicable workpieces.
[0031] like Figure 2 , Figure 4 As shown, a placement platform 42 is integrally formed on the inner wall of the second pickling chamber 4, and the upper surface of the placement platform 42 is inclined downwards. Multiple sets of limiting posts 43 are fixedly installed on the upper surface of the placement platform 42, and the limiting posts 43 are perpendicular to the upper surface of the placement platform 42. A limiting ring 44 is coaxially fixed on each limiting post 43, and the outer diameter of the limiting ring 44 is larger than the outer diameter of the limiting post 43. The limiting posts 43 can limit irregularly shaped workpieces on the placement platform 42. When irregularly shaped workpieces are clamped onto the corresponding limiting posts 43, the limiting ring 44 can elevate the workpieces clamped outside the limiting posts 43, thereby effectively preventing the bottom wall of the workpiece from contacting the upper surface of the placement platform 42, ensuring the pickling effect on the bottom of the workpiece.
[0032] like Figure 4 As shown, the third pickling chamber 5 is equipped with two support frames 50 for placing tubular workpieces. The support frames 50 are arranged sequentially at intervals within the third pickling chamber 5. The tubular workpieces are placed flat on top of the two support frames 50 using clamps, and the support frames 50 elevate the tubular workpieces, thereby ensuring the pickling effect of the tubular workpieces.
[0033] like Figure 2 , Figure 4 As shown, the fourth pickling chamber 6 can be used for pickling large workpieces. Large workpieces are suspended in the fourth pickling chamber 6 using a lifting device, ensuring they are completely submerged in the pickling solution. A drain pipe 7 is installed between the third pickling chamber 5 and the fourth pickling chamber 6. The drain pipe 7 is equipped with a valve to control its opening and closing, and a water pump to control the flow of liquid within it. The drain pipe 7 is used to pump liquid from the fourth pickling chamber 6 into the third pickling chamber 5.
[0034] like Figure 2 , Figure 4As shown, a filter plate 60 is detachably installed on the inner wall of the fourth pickling chamber 6. The filter plate 60 divides the fourth pickling chamber 6 into a filter chamber 61. The inlet of the drain pipe 7 is located in the filter chamber 61, and the outlet of the drain pipe 7 extends into the third pickling chamber 5. The filter plate 60 has through-holes 62, which can filter solid impurities in the fourth pickling chamber 6, thereby improving the cleanliness of the pickling solution discharged into the third pickling chamber 5.
[0035] The implementation principle is as follows: Workpieces are sequentially suspended on the hanging frame 30 via the hook 31, ensuring complete immersion in the first pickling chamber 3 and preventing stacking, thus guaranteeing the pickling effect and improving pickling efficiency. With the limiting position of the clamping plates 40 on both sides, plate-shaped workpieces are held upright in the second pickling chamber 4, ensuring the pickling effect on plate-shaped workpieces and further expanding the range of applicable workpieces. Irregularly shaped workpieces are respectively fitted onto corresponding limiting posts 43 using clamps. The limiting ring 44 elevates the workpieces fitted outside the limiting posts 43, effectively preventing the bottom wall of the workpiece from contacting the upper surface of the placement table 42, ensuring the pickling effect on the bottom of the workpiece. The support frame 50 elevates tubular workpieces, ensuring the pickling effect of the third pickling chamber 5 on tubular workpieces. The fourth pickling chamber 6 can be used to pickle large workpieces. Large workpieces are suspended in the fourth pickling chamber 6 by a lifting device, and the large workpieces are completely immersed in the pickling solution in the fourth pickling chamber 6, so that the pickling of large workpieces can be carried out.
[0036] The first pickling chamber 3, the second pickling chamber 4, the third pickling chamber 5, and the fourth pickling chamber 6 can process workpieces of different specifications respectively, meet the pickling requirements of workpieces of different specifications, have high adaptability, and can ensure the pickling effect of workpieces of different specifications.
[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A pickling apparatus for metal surface treatment, comprising a pickling tank (1), characterized in that: The pickling tank (1) is provided with multiple partition plates (2), which divide the pickling tank (1) into a first pickling chamber (3). A suspension frame (30) is installed above the first pickling chamber (3), and multiple hooks (31) are suspended and fixed on the suspension frame (30). The bottom of the hooks (31) is used for suspending workpieces in the first pickling chamber (3). An acid pickling basket (32) located below the hooks (31) is also placed in the first pickling chamber (3). A drain port (33) is provided through the acid pickling basket (32). Multiple support frames (34) are provided on the outer wall of the acid pickling basket (32). The pickling tank (1) is provided with limiting grooves (35) corresponding to the support frames (34). The support frames (34) are respectively limited and fixed in their respective corresponding limiting grooves (35).
2. The pickling apparatus for metal surface treatment according to claim 1, characterized in that: The partition plate (2) is provided with a clearance groove (20), and the suspension bracket (30) is placed and limited in the clearance groove (20); the partition plate (2) is provided with a fixing seat (21), the fixing seat (21) has a through hole (22), the suspension bracket (30) is placed on the fixing seat (21), and the suspension bracket (30) is provided with a plug-in post (36) inserted and fixed in the plug hole (22).
3. The pickling apparatus for metal surface treatment according to claim 1, characterized in that: The partition plate (2) divides the pickling tank (1) into a second pickling chamber (4). Multiple sets of clamping plates (40) are provided on the inner side wall of the second pickling chamber (4). A clamping groove (41) is formed between the clamping plates (40) in the same set. The length of the clamping groove (41) extends along the depth direction of the second pickling chamber (4).
4. The pickling apparatus for metal surface treatment according to claim 3, characterized in that: A placement platform (42) is provided on the inner wall of the second pickling chamber (4); the upper surface of the placement platform (42) is inclined downward; multiple sets of limiting posts (43) are provided on the upper surface of the placement platform (42), and limiting rings (44) are coaxially provided on the limiting posts (43), and the limiting rings (44) are used to elevate the workpieces sleeved outside the limiting posts (43).
5. The pickling apparatus for metal surface treatment according to claim 1, characterized in that: The partition plate (2) divides the pickling tank (1) into a third pickling chamber (5). The third pickling chamber (5) is fixedly equipped with a support frame (50) for placing tubular workpieces. The support frames (50) are arranged in sequence at intervals in the third pickling chamber (5).
6. The pickling apparatus for metal surface treatment according to claim 5, characterized in that: The partition plate (2) separates the pickling tank (1) into a fourth pickling chamber (6). A drain pipe (7) is provided between the third pickling chamber (5) and the fourth pickling chamber (6). The drain pipe (7) is used to drain the liquid in the fourth pickling chamber (6) into the third pickling chamber (5).
7. The pickling apparatus for metal surface treatment according to claim 6, characterized in that: A filter plate (60) is detachably installed on the inner wall of the fourth pickling chamber (6). The filter plate (60) separates the fourth pickling chamber (6) into a filter chamber (61). The inlet of the drain pipe (7) is located in the filter chamber (61). The filter plate (60) has a filter hole (62) through it.