Aluminum profile three-acid polishing liquid recovery device

Abstract

The utility model relates to three acid polishing technical field discloses aluminium profile three acid polishing liquid recovery unit, including polishing tank, primary recovery groove and secondary recovery groove, polishing tank bottom both sides fixedly connected with support, polishing tank bottom fixedly connected with first row pipe, and the first row pipe bottom end is inserted in the primary recovery groove, be equipped with the inner chamber on the primary recovery groove lateral wall, and the inner chamber inside spiral fixedly has cooling pipe, support outside fixedly connected with first pump body, and be equipped with output pipe between first pump body and primary recovery groove, be equipped with backflow pipe between first pump body and polishing tank, through primary recovery groove and secondary recovery groove to the polishing liquid carries out two -stage recovery, and the combination cooling pipe, pump body and backflow pipe etc. Component, has realized the efficient cooling, recovery and reuse of polishing liquid, avoided the resource waste caused by the direct discharge of low acid polishing liquid, reduced the environmental pollution risk simultaneously, and the recovered polishing liquid can be used for polishing treatment after proper adjustment, remarkably reduced production cost.

Description

Technical Field

[0001] This utility model relates to the field of tri-acid polishing technology, specifically to a tri-acid polishing liquid recovery device for aluminum profiles. Background Technology

[0002] Acid-based polishing surface treatment for aluminum profiles is a high-end surface treatment technology that occupies an important position in the aluminum profile processing industry. This process uses a mixture of phosphoric acid, sulfuric acid, and nitric acid in different proportions and concentrations as the polishing solution to efficiently and uniformly polish the surface of aluminum profiles, significantly improving their surface quality and gloss. During this process, the bath temperature is typically maintained at around 120℃ to ensure optimal polishing results.

[0003] However, when polishing slurry is exposed to high temperatures for extended periods, its internal components undergo a series of chemical reactions. Nitric acid, in particular, is an unstable strong acid that decomposes rapidly under high temperatures, causing the acidity of the polishing slurry to gradually decrease. This decrease in acidity directly affects the processing effect on aluminum profiles, resulting in substandard surface quality and even requiring repolishing, increasing production costs and time. Furthermore, directly discharging low-acid polishing slurry not only causes significant resource waste but also pollutes the environment. If untreated, the phosphoric acid, sulfuric acid, and nitric acid in the polishing slurry are directly released into the environment, they will severely pollute water and soil, disrupting the ecological balance.

[0004] Currently, although some polishing slurry recovery devices exist on the market, most are designed for recovering single-acid or low-concentration acid solutions. For high-temperature, high-concentration, multi-component mixed acid solutions like aluminum profile tri-acid polishing slurries, existing recovery devices often cannot meet the requirements. These devices are prone to problems such as poor cooling, uneven acid mixing, and low recovery efficiency during the recovery process, resulting in unstable quality of the recovered polishing slurry, making it unsuitable for direct use in repolishing. Utility Model Content

[0005] The purpose of this invention is to provide a device for recovering tri-acid polishing liquid from aluminum profiles, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an aluminum profile tri-acid polishing liquid recovery device, comprising a polishing tank, a primary recovery tank, and a secondary recovery tank; a support is fixedly connected to both sides of the bottom end of the polishing tank, and a first row of pipes is fixedly connected to the bottom end of the polishing tank, with the bottom ends of the first row of pipes inserted into the primary recovery tank; an inner cavity is provided on the side wall of the primary recovery tank, and a cooling pipe is coiled and fixed inside the inner cavity; a first pump body is fixedly connected to the outside of the support, an output pipe is provided between the first pump body and the primary recovery tank, and a return pipe is provided between the first pump body and the polishing tank; a second row of pipes is fixedly connected to the bottom end of the primary recovery tank, with the bottom ends of the second row of pipes inserted into the secondary recovery tank; the secondary recovery tank is fixed to the bottom end of the primary recovery tank by several connecting columns, and the secondary recovery tank is fixedly connected to the support by several legs; a transport pipe and an input pipe are fixedly connected to the outside of the secondary recovery tank; a second pump body is fixedly connected to one end of the transport pipe, and the second pump body is fixed to the outside of the support; a storage box is fixedly connected to the upper outer side of the secondary recovery tank, and a feeding pipe is provided between the bottom end of the storage box and the secondary recovery tank.

[0007] Preferably, a timing valve is fixedly connected to the outside of the first pipe, a solenoid valve is fixedly connected to the outside of the second pipe, and a flow valve is fixedly connected to the outside of the feeding pipe.

[0008] Preferably, a motor is fixedly connected to the bottom wall of the support, a rotating shaft is fixedly connected to the output end of the motor, the upper end of the rotating shaft is inserted into the secondary recycling tank, and several mixing plates are fixedly connected to the outside of the rotating shaft.

[0009] Preferably, each of the aforementioned mixing plates is provided with a plurality of through holes.

[0010] Preferably, a pH meter is fixedly connected to the outside of both the primary and secondary recycling tanks.

[0011] Compared with existing technologies, this method uses primary and secondary recovery tanks to recover polishing slurries of different concentrations. Combined with components such as cooling pipes, pumps, and return pipes, it achieves efficient cooling, recovery, and reuse of polishing slurries. This avoids resource waste caused by the direct discharge of low-acid polishing slurries and reduces the risk of environmental pollution. The recovered polishing slurry can be reused for polishing after appropriate adjustments, significantly reducing production costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the internal structure of the primary recycling tank of this utility model;

[0014] Figure 3 This is a cross-sectional view of the internal structure of the secondary recycling tank of this utility model;

[0015] Figure 4 This is a schematic diagram of the bottom structure of the polishing tank of this utility model.

[0016] In the diagram: 1. Polishing tank; 2. Primary recovery tank; 3. Secondary recovery tank; 4. Support; 5. Connecting column; 6. Support leg; 7. Cooling pipe; 8. First pump body; 9. Return pipe; 10. Output pipe; 11. Transport pipe; 12. Second pump body; 13. Input pipe; 14. Motor; 15. pH meter; 16. Storage tank; 17. Inner cavity; 18. Second row of pipes; 19. Solenoid valve; 20. Rotating shaft; 21. Mixing plate; 22. Through hole; 23. Feeding pipe; 24. Flow valve; 25. First row of pipes; 26. Timer valve. Detailed Implementation

[0017] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 The present invention provides the following technical solution:

[0019] Example 1: A tri-acid polishing slurry recovery device for aluminum profiles includes a polishing tank 1, a primary recovery tank 2, and a secondary recovery tank 3. Supports 4 are fixedly connected to both sides of the bottom of the polishing tank 1. A first row of pipes 25 is fixedly connected to the bottom of the polishing tank 1, and the bottom of the first row of pipes 25 is inserted into the primary recovery tank 2. An inner cavity 17 is provided on the side wall of the primary recovery tank 2, and a cooling pipe 7 is coiled and fixed inside the inner cavity 17. A first pump body 8 is fixedly connected to the outside of the support 4. An output pipe 10 is provided between the first pump body 8 and the primary recovery tank 2. A return pipe 9 is provided between the first pump body 8 and the polishing tank 1. A second row of pipes 18 is fixedly connected to the bottom of the primary recovery tank 2, and the bottom of the second row of pipes 18 is inserted into the secondary recovery tank 3. The secondary recovery tank 3 is fixed to the bottom of the primary recovery tank 2 by several connecting columns 5. The secondary recovery tank 3 is fixedly connected to the support 4 by several legs 6. The transport pipe 11 and the input pipe 13 are fixedly connected to the outside of the secondary recovery tank 3. The second pump body 12 is fixedly connected to one end of the transport pipe 11. The second pump body 12 is fixed to the outside of the support 4. The upper outer side of the secondary recovery tank 3 is fixedly connected to the storage tank 16. The bottom of the storage tank 16 is connected to the secondary recovery tank 3 by the feeding pipe 23. Polishing liquids of different concentrations are recovered through the primary recovery tank 2 and the secondary recovery tank 3. Combined with components such as the cooling pipe 7, the pump body and the return pipe 9, the polishing liquid is efficiently cooled, recovered and reused, avoiding the waste of resources caused by the direct discharge of low acid polishing liquid, and reducing the risk of environmental pollution. The recovered polishing liquid can be reused for polishing after appropriate adjustment, which significantly reduces the production cost.

[0020] A timer valve 26 is fixedly connected to the outside of the first row of pipes 25, which discharges the polishing liquid in the polishing tank 1 into the primary recovery tank 2 at regular intervals. The discharge frequency is once every 2-4 hours. A solenoid valve 19 is fixedly connected to the outside of the second row of pipes 18, and a flow valve 24 is fixedly connected to the outside of the feeding pipe 23 to precisely control the amount of low-concentration acid solution added.

[0021] Both the primary recovery tank 2 and the secondary recovery tank 3 are fixedly connected to a pH meter 15 to monitor the concentration of the polishing fluid in real time.

[0022] During use, the aluminum profile is immersed in the polishing liquid in polishing tank 1. The polishing liquid in polishing tank 1 is periodically discharged into primary recovery tank 2. The polishing liquid in primary recovery tank 2 is cooled to 30-40℃ by cooling pipes 7 coiled on the outside of primary recovery tank 2 to inhibit nitric acid decomposition. Then, the cooled polishing liquid is returned to polishing tank 1 through the first pump body 8, output pipe 10, and return pipe 9 to replenish the acid lost through evaporation. When the pH of the polishing liquid in primary recovery tank 2 is ≥1.5, solenoid valve 19 is activated. The polishing liquid in the primary recovery tank 2 is discharged into the secondary recovery tank 3. Fresh water is added to the secondary recovery tank 3 at a ratio of 1:1 to 1:3 through an external water pump and input pipe 13. The acid concentration is monitored in real time by pH meter 15. If pH > 3, the flow valve 24 is activated to replenish the polishing liquid with acid. The diluted acid has a pH of 1.5-2.5 and is reused in the water washing tank or pretreatment tank through the second pump body 12 and transport pipe 11 to replace part of the fresh acid, reduce the consumption of fresh acid, and recycle polishing liquid of different concentrations to reduce costs.

[0023] In Example 2, based on the technical solution of Example 1, a motor 14 is also provided. The motor 14 is fixed on the bottom wall of the bracket 4. A rotating shaft 20 is fixedly connected to the output end of the motor 14. The upper end of the rotating shaft 20 is inserted into the secondary recovery tank 3. Several mixing plates 21 are fixedly connected to the outside of the rotating shaft 20. Several through holes 22 are provided on the several mixing plates 21. The rotating shaft 20 is driven to rotate by the motor 14, and the rotating shaft 20 drives the several mixing plates 21 with through holes 22 to rotate in the secondary recovery tank 3, mixing and stirring the mixed polishing liquid, making the composition of the recovered polishing liquid more uniform and improving the quality stability of the recovered liquid.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An apparatus for recovering a three-acid polishing solution for aluminum profiles, characterized by, It includes a polishing tank (1), a primary recycling tank (2), and a secondary recycling tank (3); The polishing tank (1) is fixedly connected to two brackets (4) on both sides of the bottom end, and the polishing tank (1) is fixedly connected to a first row of pipes (25), with the bottom end of the first row of pipes (25) inserted into the primary recycling tank (2). The first-stage recycling tank (2) has an inner cavity (17) on its side wall. A cooling pipe (7) is coiled and fixed inside the inner cavity (17). A first pump body (8) is fixedly connected to the outside of the bracket (4). An output pipe (10) is provided between the first pump body (8) and the first-stage recycling tank (2). A return pipe (9) is provided between the first pump body (8) and the polishing tank (1). A second row of pipes (18) is fixedly connected to the bottom of the first-stage recycling tank (2). The bottom of the second row of pipes (18) is inserted into the second-stage recycling tank (3). The secondary recycling tank (3) is fixed to the bottom of the primary recycling tank (2) by several connecting columns (5). The secondary recycling tank (3) is fixedly connected to the support (4) by several legs (6). A transport pipe (11) and an input pipe (13) are fixedly connected to the outside of the secondary recycling tank (3). A second pump body (12) is fixedly connected to one end of the transport pipe (11). The second pump body (12) is fixed to the outside of the support (4). A storage box (16) is fixedly connected to the upper outside of the secondary recycling tank (3). A feeding pipe (23) is provided between the bottom of the storage box (16) and the secondary recycling tank (3).

2. The aluminum material tri-acid polishing liquid recovery device according to claim 1, characterized by: A timer valve (26) is fixedly connected to the outside of the first pipe (25), a solenoid valve (19) is fixedly connected to the outside of the second pipe (18), and a flow valve (24) is fixedly connected to the outside of the feeding pipe (23).

3. The aluminum material tri-acid polishing liquid recovery device according to claim 1, characterized by: A motor (14) is fixedly connected to the bottom wall of the bracket (4), and a rotating shaft (20) is fixedly connected to the output end of the motor (14). The upper end of the rotating shaft (20) is inserted into the secondary recycling tank (3), and several mixing plates (21) are fixedly connected to the outside of the rotating shaft (20).

4. The aluminum material tri-acid polishing liquid recovery device according to claim 3, characterized in that: Several through holes (22) are provided on several of the aforementioned mixing plates (21).

5. The aluminum profile tri-acid polishing liquid recovery device according to claim 1, characterized in that: A pH meter (15) is fixedly connected to the outside of both the primary recycling tank (2) and the secondary recycling tank (3).

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