A low-temperature enrichment device for electroplating cleaning solution

Abstract

This utility model discloses a low-temperature enrichment device for electroplating cleaning solutions, comprising an evaporation chamber with a steam vent at the top, a liquid inlet on the upper side wall, and a liquid outlet at the bottom. A vacuum pump is connected to the side of the evaporation chamber to drive the low-temperature evaporation process, and the inner side wall is covered with a titanium liner to enhance corrosion resistance. A multi-stage activated carbon adsorption layer with varying pore sizes is installed at the bottom of the evaporation chamber, consisting of a perforated shell, filter cloth, and activated carbon from the outside in, for efficient ion enrichment. A backflushing device is installed directly opposite the liquid inlet to periodically flush away residues from the inner wall. A removable cover is connected to the top via a flange, and a puller groove design on the top of the activated carbon adsorption layer allows for quick replacement. The device significantly reduces energy consumption for electroplating cleaning solution treatment through low-temperature evaporation combined with activated carbon adsorption. The combination of the backflushing device and the titanium liner enhances the durability of the equipment, and the modular structure simplifies maintenance. It is suitable for low-cost ion enrichment needs such as those for roller electroplating cleaning solutions.

Description

Technical Field

[0001] The utility model relates to the technical field of electroplating cleaning liquid treatment devices, and particularly relates to a low-temperature enrichment device for electroplating cleaning liquid. Background Art

[0002] For the production and processing of rolling mills, in order to improve the wear resistance of the surface of the rolling mill, electroplating treatment is usually carried out on its surface. After the electroplating of the rolling mill is completed and it is judged that the surface has no defects, that is, it is qualified, it will continue to flow to the cleaning pool for cleaning work. After cleaning, a protective film is coated on the surface and then it can be packaged. Although the electroplating solution can be processed, adjusted in concentration and reused, the amount of the cleaning liquid is relatively higher, and the concentration of the coating ions is lower. Whether it is reused or treated by water treatment, the corresponding device cost is relatively expensive. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a low-temperature enrichment device for electroplating cleaning liquid.

[0004] To achieve the above purpose, the technical solution provided by the utility model is as follows.

[0005] A low-temperature enrichment device for electroplating cleaning liquid includes an evaporation chamber, which is sequentially and communicatively provided with an exhaust port and a liquid inlet from top to bottom. A liquid discharge port is communicatively provided at the bottom of the evaporation chamber. A vacuum pump is connected to the side of the evaporation chamber. An activated carbon adsorption layer is provided at the inner bottom of the evaporation chamber. The liquid discharge port is provided below the activated carbon adsorption layer. The liquid inlet is provided inside the evaporation chamber and is provided with a backwashing device facing the inner wall of the evaporation chamber.

[0006] As a preferred technical solution, the activated carbon adsorption layer is provided with multiple levels of pore sizes, and the multiple levels of pore sizes are distributed from top to bottom in the range of 20 - 50 μm.

[0007] As a preferred technical solution, the backwashing device includes a spray gun, a water pipe and a booster pump that are communicatively connected to the spray gun.

[0008] As a preferred technical solution, the exhaust port is transitionally connected to a condensation device through a pipeline.

[0009] As a preferred technical solution, a titanium lining plate is provided on the surface of the inner wall of the evaporation chamber.

[0010] As a preferred technical solution, a cover body is detachably provided at the top of the evaporation chamber, and the activated carbon adsorption layer can be replaced from the connection part between the cover body and the evaporation chamber.

[0011] As a preferred technical solution, the cover body and the evaporation chamber are connected by a flange.

[0012] As a preferred technical solution, the activated carbon adsorption layer is provided with a perforated shell, a filter cloth, and activated carbon in sequence from the outside to the inside, and the bottom edge of the perforated shell is provided with a connecting post that is adapted to the inside of the evaporation chamber.

[0013] As a preferred technical solution, a column is provided extending upward from the center of the top surface of the hollow shell, and the column is provided with pull grooves in the circumference.

[0014] The advantages and beneficial effects of this utility model are as follows: by integrating low-temperature evaporation technology, combined with activated carbon adsorption layer and backflushing device, it can efficiently concentrate low-concentration ions in electroplating cleaning solution, significantly reducing processing costs and energy consumption; at the same time, the activated carbon adsorption layer with multi-level pore size improves ion enrichment efficiency, and the backflushing device cleans the ion residue on the inner wall during evaporation, reducing the corrosion of the evaporation chamber by the cleaning solution. Attached Figure Description

[0015] Figure 1 This is a cross-sectional structural schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of the activated carbon adsorption layer of the present invention;

[0017] Figure label:

[0018] 1-Evaporation chamber, 2-Vacuum outlet, 3-Liquid inlet, 4-Liquid outlet, 5-Vacuum pump, 6-Activated carbon adsorption layer, 7-Backflushing device, 8-Spray gun, 9-Condensation device, 10-Titanium liner, 11-Cover, 12-Flange, 13-Perforated shell, 14-Filter cloth, 15-Activated carbon, 16-Connecting column, 17-Pulling groove. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0020] Example 1

[0021] This embodiment includes an evaporation chamber 1, with a steam vent 2 at the top, a liquid inlet 3 on the upper side wall, and a drain 4 at the bottom. A vacuum pump 5 is connected to the side of the evaporation chamber 1, driving the low-temperature evaporation process with compressed air. The inner side wall of the evaporation chamber 1 is fully covered with a titanium liner 10 to resist corrosive liquid erosion. An activated carbon adsorption layer 6 is provided at the bottom of the chamber, which adopts a multi-level pore structure with a pore size range of 20-50μm, consisting of a perforated shell 13, a filter cloth 14, and activated carbon 15 from the outside to the inside. The drain 4 is located directly below the adsorption layer, and a backflushing device 7 is installed directly opposite the liquid inlet 3 on the chamber wall.

[0022] Electroplating cleaning solution is injected into evaporation chamber 1 through inlet 3. Vacuum pump 5 evacuates evaporation chamber 1, and steam is discharged through exhaust port 2. Metal ions in the cleaning solution are intercepted and enriched by activated carbon adsorption layer 6, and the treated liquid is discharged through outlet port 4. Titanium liner 10 prevents the chamber wall from being corroded by the electroplating solution. Multi-level pore size adsorption layer preferentially captures large particle impurities (50μm layer), while small particle size activated carbon (20μm layer) adsorbs ionic metals.

[0023] Example 2

[0024] Based on Example 1, the backflushing device 7 specifically includes a spray gun 8, a booster pump, and a water supply pipe. The spray gun 8 is aimed at the surface of the titanium liner 10 on the inner wall of the evaporation chamber 1, and the booster pump provides a high-pressure water flow. The exhaust port 2 is connected to an external condensing device 9 through a pipe for recovering waste heat from the steam. A connecting post 16 is added to the bottom edge of the hollow shell 13 of the activated carbon adsorption layer 6 and fixed to the inner groove of the evaporation chamber 1.

[0025] After 24 hours of operation, backflushing is initiated: a booster pump drives clean water to spray through spray gun 8 onto the chamber wall, removing crystalline residue from the surface of the titanium liner 10. Steam is introduced into the condenser 9 through exhaust port 2 for liquefaction and recovery. When replacing the activated carbon layer, a sealing is ensured by positioning via connecting column 16. The perforated housing 13 protects the internal filter cloth 14 from damage by high-pressure water flow, and the filter cloth 14 prevents leakage of activated carbon 15.

[0026] Example 3

[0027] Based on Example 2, the top of the evaporation chamber 1 is connected to a detachable cover 11 via a flange 12. A column extends upward from the center of the top surface of the perforated shell 13 of the activated carbon adsorption layer 6, with puller grooves 17 circumferentially formed on the column. The puller grooves 17 are 5mm deep and 8mm wide, and are adapted to fit standard hydraulic puller tool claws.

[0028] During the replacement of the activated carbon adsorption layer, loosen the flange 12 bolts, lift the cover 11 to expose the cavity; insert the puller tool claw into the puller groove 17, and hydraulically lift out the activated carbon adsorption layer; the activated carbon adsorption layer is positioned and inserted into the bottom of the cavity through the connecting column 16, the cover 11 is reset and the flange 12 is locked, and the replacement is completed within 15 minutes.

[0029] The working principle of this invention lies in achieving low-cost enrichment through the synergistic effect of low-temperature evaporation and adsorption. Specifically, after the electroplating cleaning solution is injected into the evaporation chamber 1 through the inlet 3, the vacuum pump 5 evacuates the evaporation chamber, driving the liquid to undergo low-pressure evaporation at 40-60℃. The vapor is discharged through the top exhaust port 2 and connected to the condenser 9 to recover the water. At the same time, as the cleaning solution flows downward, the low-concentration metal ions (such as chromium and nickel ions) are intercepted and enriched by the activated carbon adsorption layer 6 at the bottom. The adsorption layer adopts a multi-level pore design, from the outside to the inside, it passes through the hollow shell 13 to coarsely filter large particles of impurities, the filter cloth 14 to intercept medium particles, and stabilizes the morphology of the activated carbon 15. The activated carbon 15 efficiently adsorbs ionic metals. The treated residual liquid is discharged through the drain port 4. The whole process has low energy consumption and an ion enrichment efficiency of over 90%, making it suitable for batch processing of roll electroplating cleaning solutions.

[0030] The workflow includes regular maintenance to ensure continuous operation. After 24-48 hours of operation, the backflushing device 7 is activated, using a booster pump to drive high-pressure water through the spray gun 8 to spray onto the surface of the titanium liner 10 on the inner wall of the evaporation chamber 1, removing crystalline residues and preventing corrosion. When the activated carbon adsorption layer 6 is saturated (usually every 1-2 months), the cover 11 is removed by loosening the flange 12, and the adsorption layer assembly is lifted and removed using a puller tool hooked into the puller groove 17. After replacing with a new layer, the seal is reset. This process combines automated control and modular design, simplifying operation and improving equipment durability.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A low-temperature enrichment device for electroplating cleaning solution, comprising an evaporation chamber (1), characterized in that: The evaporation chamber (1) is provided with a steam vent (2) at the top, a liquid inlet (3) at the upper part of the side wall, and a liquid drain (4) at the bottom; The evaporation chamber (1) is connected to a vacuum pump (5) on the side and an activated carbon adsorption layer (6) is provided at the bottom of the inner side; The drain port (4) is located below the activated carbon adsorption layer (6), and the inlet port (3) is provided with a backflushing device (7) facing the inner wall of the evaporation chamber (1).

2. The low-temperature enrichment device according to claim 1, characterized in that: The activated carbon adsorption layer (6) has a multi-level pore structure with a pore size range of 20-50 μm from top to bottom.

3. The low-temperature enrichment device according to claim 1, characterized in that: The backflush device (7) includes a spray gun (8), a water pipe connected to the spray gun (8), and a booster pump.

4. The low-temperature enrichment device according to claim 1, characterized in that: The exhaust port (2) is connected to the condenser (9) via a pipe.

5. The low-temperature enrichment device according to claim 1, characterized in that: The inner wall surface of the evaporation chamber (1) is covered with a titanium liner (10).

6. The low-temperature enrichment device according to claim 1, characterized in that: The top of the evaporation chamber (1) is sealed by a removable cover (11).

7. The low-temperature enrichment device according to claim 6, characterized in that: The cover (11) is connected to the evaporation chamber (1) via a flange (12).

8. The low-temperature enrichment device according to claim 6, characterized in that: The activated carbon adsorption layer (6) includes a perforated shell (13), a filter cloth (14), and activated carbon (15) arranged sequentially from the outside to the inside; The bottom edge of the hollow shell (13) is provided with a connecting post (16) that is adapted to the inner side of the evaporation chamber (1).

9. The low-temperature enrichment device according to claim 8, characterized in that: A column extends upward from the center of the top surface of the hollow shell (13), and a pull groove (17) is opened around the column.

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