Impurity filtering device for recycling acidic etching liquid

Abstract

The utility model relates to the technical field of etching liquid recycling, in particular to an impurity filtering device for recycling acid etching liquid. According to the technical scheme, the device comprises a shell, a tank body, a liquid inlet pipe and a mounting frame, wherein the bottom end face of the shell is sleeved with a collecting box; a filter screen box is sleeved in the liquid inlet pipe; a driving mechanism is mounted on the top end surface of the tank body, and a mounting frame is mounted on an output shaft of the driving mechanism through a rotating shaft; a filter box is mounted at one end, deviating from the rotating shaft, of the mounting frame; a connecting shaft is arranged in the filter box, a scraping plate and a stirring rod are installed on the connecting shaft, a clamping block is installed on the filter screen box, the clamping block is slidably connected to the liquid inlet pipe in a sleeving mode, connecting frames are welded to the two ends of the outer surface of the tank body, and the ends, away from the tank body, of the connecting frames are welded into the shell. The etching liquid recycling device meets the requirement for recycling the etching liquid, centrifugal separation can be adopted during recycling, and liquid precipitation is prevented from affecting filtering.

Description

Technical Field

[0001] This utility model relates to the field of etching solution recovery technology, specifically to an impurity filtration device for recovering acidic etching solutions. Background Technology

[0002] Etching waste liquid is generated during the etching process of printed circuit boards by dissolving copper through chemical corrosion. It can be further divided into acidic and alkaline types according to its acidity or alkalinity. If this type of waste liquid is not properly treated and utilized, it will cause serious environmental pollution and a huge economic waste.

[0003] Existing methods for recycling etching waste liquid mostly involve sedimentation followed by stratification, but the sedimentation time is relatively long, which affects the recycling effect, and therefore further improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide an impurity filtration device for recovering acidic etching solutions, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an impurity filtration device for recovering acidic etching solution, comprising a shell, a tank, an inlet pipe, and a mounting bracket.

[0006] A collection box is fitted onto the bottom end face of the outer shell;

[0007] A filter screen box is fitted inside the liquid inlet pipe;

[0008] A drive mechanism is installed on the top surface of the tank, and a mounting bracket is installed on the output shaft of the drive mechanism via a rotating shaft;

[0009] A filter box is installed at the end of the mounting bracket that is away from the rotating shaft;

[0010] The filter box is equipped with a connecting shaft, and a scraper and a stirring rod are respectively installed on the connecting shaft.

[0011] Preferably, the filter box is equipped with a locking block, which is slidably fitted onto the inlet pipe. By sliding the locking block onto the inlet pipe, the filter box can be installed and positioned within the inlet pipe for restraint.

[0012] Preferably, connecting brackets are welded to both ends of the outer surface of the tank, and the end of the connecting bracket facing away from the tank is welded inside the outer shell. The connecting brackets can be used to install and fix the tank inside the outer shell.

[0013] Preferably, a support plate is welded to the bottom surface of the outer casing, and a bearing plate is mounted on the bottom surface of the support plate. The outer casing can be installed and supported by the support plate and the bearing plate.

[0014] Preferably, a discharge pipe is embedded and fixed to the bottom end face of the tank, the discharge pipe is connected to the tank, and a valve is installed on the discharge pipe via a flange. The connection between the discharge pipe and the tank allows personnel to open the valve on the discharge pipe to discharge the filtered acidic etching solution from the tank.

[0015] Preferably, both ends of the connecting shaft are welded with fixing brackets, and the end of the fixing bracket facing away from the connecting shaft is welded to the tank body. The fixing brackets can be used to install and fix the connecting shaft inside the tank body.

[0016] Preferably, the bottom end of the inlet pipe is embedded and fixed inside the tank, and the tank is in liquid communication with the inlet pipe. The acidic etching solution to be recovered can be injected into the tank through the inlet pipe.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. This utility model, through the design of a tank, first introduces the acidic etching solution into the tank via an inlet pipe during the acidic etching solution recovery process. During this process, the filter box built into the inlet pipe intercepts larger impurity particles in the etching solution, performing preliminary purification. After the etching solution is injected, the operator can remove the filter box for necessary cleaning and maintenance. After maintenance, the filter box can be easily repositioned using its locking mechanism to continue its filtration function, ensuring the continuous and efficient operation of the acidic etching solution pretreatment stage. Furthermore, the acidic etching solution entering the tank is then injected into a filter box for filtration through its filter holes. After treatment, the operator opens the valve on the discharge pipe, and the filtered acidic etching solution flows into a collection tank. In summary, this acidic etching solution recovery process not only achieves effective resource recovery but also ensures the complete removal of impurities during the recovery process through a sophisticated filtration design.

[0019] 2. This utility model, by setting a connecting shaft, allows the acidic etching solution to undergo meticulous filtration as it flows into the filter box during the recovery process. The solution passes through numerous filter holes. At this point, the operator can activate the drive mechanism, which drives the mounting frame to rotate slowly via a rotating shaft. As the mounting frame rotates, the filter box also rotates, bringing the acidic etching solution into contact with the stirring rod, thus agitating the solution and preventing potential sedimentation. Simultaneously, the rotating filter box contacts the scraper, which gently scrapes the inner wall of the filter box, removing any remaining etching solution residue and preventing it from negatively impacting the filtration effect. Furthermore, as the acidic etching solution is filtered and prepared for discharge, the continuous rotation of the filter box generates centrifugal force, facilitating smoother discharge and further improving the efficiency and purity of the recovery process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the tank body of this utility model;

[0022] Figure 3 This is a bottom view of the filter box structure of this utility model;

[0023] Figure 4 This is a top view of the filter box structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the unfolded structure of the liquid inlet pipe of this utility model.

[0025] In the diagram: 1. Support plate; 2. Discharge pipe; 3. Collection box; 4. Bearing plate; 5. Outer shell; 6. Tank body; 7. Connecting frame; 8. Drive mechanism; 9. Inlet pipe; 10. Filter box; 11. Connecting shaft; 12. Fixing frame; 13. Scraper; 14. Mounting frame; 15. Rotating shaft; 16. Stirring rod; 17. Locking block; 18. Filter screen box. Detailed Implementation

[0026] 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.

[0027] Example 1

[0028] like Figures 1-5 As shown, the present invention proposes an impurity filtration device for recovering acidic etching solution, comprising a shell 5, a tank 6, an inlet pipe 9, and a mounting bracket 14.

[0029] A collection box 3 is fitted onto the bottom surface of the outer shell 5;

[0030] A filter box 18 is fitted inside the liquid inlet pipe 9;

[0031] A drive mechanism 8 is installed on the top surface of the tank body 6, and a mounting bracket 14 is installed on the output shaft of the drive mechanism 8 via a rotating shaft 15;

[0032] A filter box 10 is installed on the end of the mounting bracket 14 away from the rotating shaft 15. The filter box 10 can be opened with uniform filter holes to filter impurities in the acid etching solution, so that the impurities are inside the filter box 10, and the acid etching solution is discharged through the filter holes during filtration.

[0033] The filter box 10 is equipped with a connecting shaft 11, and a scraper 13 and a stirring rod 16 are respectively installed on the connecting shaft 11.

[0034] A locking block 17 is installed on the filter box 18, and the locking block 17 is slidably sleeved on the liquid inlet pipe 9. By sliding the locking block 17 on the liquid inlet pipe 9, the filter box 18 can be installed and placed in the liquid inlet pipe 9 for limiting.

[0035] Connecting brackets 7 are welded to both ends of the outer surface of the tank body 6, and the end of the connecting bracket 7 facing away from the tank body 6 is welded inside the outer shell 5. The tank body 6 can be installed and fixed inside the outer shell 5 through the connecting brackets 7.

[0036] A support plate 1 is welded to the bottom surface of the outer shell 5, and a bearing plate 4 is installed on the bottom surface of the support plate 1. The outer shell 5 can be installed and supported by the support plate 1 and the bearing plate 4.

[0037] Based on Example 1: When recovering acidic etching solution, personnel can inject the acidic etching solution into the tank 6 through the inlet pipe 9. During injection, the acidic etching solution can first pass through the filter box 18 in the inlet pipe 9 to filter larger particles of impurities, thereby pre-treating the acidic etching solution. After injection, personnel can remove the filter box 18 for cleaning and maintenance. After maintenance, the filter box 18 can be repositioned by the locking block 17. This satisfies the requirement that the filter box 18 can be removed for cleaning and maintenance during the pre-treatment of acidic etching solution. Furthermore, the acidic etching solution entering the tank 6 can be filtered again in the filter box 10. After treatment, the discharge pipe 2 can be opened to discharge into the collection box 3 for collection, thereby satisfying the requirements of acidic etching solution recovery and impurity filtration.

[0038] Example 2

[0039] like Figures 1-5 As shown, the impurity filtration device for recovering acidic etching solution proposed in this utility model, compared with Embodiment 1, further includes: a shell 5, a tank 6, an inlet pipe 9, and a mounting bracket 14.

[0040] A collection box 3 is fitted onto the bottom surface of the outer shell 5;

[0041] A filter box 18 is fitted inside the liquid inlet pipe 9;

[0042] A drive mechanism 8 is installed on the top surface of the tank body 6, and a mounting bracket 14 is installed on the output shaft of the drive mechanism 8 via a rotating shaft 15;

[0043] A filter box 10 is installed on the end of the mounting bracket 14 that is away from the rotating shaft 15;

[0044] The filter box 10 is equipped with a connecting shaft 11, and a scraper 13 and a stirring rod 16 are respectively installed on the connecting shaft 11.

[0045] Furthermore, as is well known to those skilled in the art, the provision of the drive mechanism 8 is commonplace. The drive mechanism 8 can be controlled and powered by an external power supply and an external control switch, and the control switch can be installed on the outer surface of the housing 5. These are all conventional methods or common knowledge, and will not be elaborated further here. Those skilled in the art can make any selections according to their needs or convenience. The drive mechanism 8 drives the rotating shaft 15 to rotate.

[0046] A discharge pipe 2 is embedded and fixed on the bottom end face of the tank body 6. The discharge pipe 2 is connected to the tank body 6, and a valve is installed on the discharge pipe 2 through a flange. The discharge pipe 2 is connected to the tank body 6, so that personnel can open the valve on the discharge pipe 2 to discharge the filtered acidic etching solution in the tank body 6.

[0047] Both ends of the connecting shaft 11 are welded with fixing brackets 12, and the end of the fixing bracket 12 facing away from the connecting shaft 11 is welded inside the tank body 6. The connecting shaft 11 can be installed and fixed inside the tank body 6 through the fixing brackets 12.

[0048] The bottom end of the inlet pipe 9 is embedded and fixed inside the tank body 6, and the tank body 6 is in liquid communication with the inlet pipe 9. The acidic etching solution that needs to be recovered can be injected into the tank body 6 through the inlet pipe 9.

[0049] Based on Example 2: When personnel are recovering acidic etching solution, the acidic etching solution is filtered through the filter holes in the filter box 10. Personnel can open the drive mechanism 8 to drive the mounting frame 14 to rotate via the rotating shaft 15. When the mounting frame 14 rotates, it can drive the filter box 10 to rotate, so that the acidic etching solution inside the filter box 10 comes into contact with the stirring rod 16, thereby agitating the acidic etching solution. In addition, the filter box 10 comes into contact with the scraper 13 to scrape and clean the inner wall, so as to avoid sedimentation when the acidic etching solution is agitated and to prevent the acidic etching solution from adhering to the inner wall of the filter box 10 and affecting the filtration. When discharging the filtered solution, the rotation of the filter box 10 can centrifuge and discharge the acidic etching solution, thereby satisfying the treatment and recovery of impurities in the acidic etching solution.

[0050] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An impurity filtration device for recovering acidic etching solution, comprising a shell (5), a tank (6), an inlet pipe (9), and a mounting bracket (14), characterized in that: A collection box (3) is fitted onto the bottom end face of the outer shell (5); A filter box (18) is fitted inside the liquid inlet pipe (9); A drive mechanism (8) is installed on the top surface of the tank (6), and a mounting bracket (14) is installed on the output shaft of the drive mechanism (8) via a rotating shaft (15); A filter box (10) is installed at one end of the mounting bracket (14) away from the rotating shaft (15); The filter box (10) is provided with a connecting shaft (11), and a scraper (13) and a stirring rod (16) are respectively installed on the connecting shaft (11).

2. The impurity filtration device for recovering acidic etching solution according to claim 1, characterized in that: The filter box (18) is equipped with a locking block (17), and the locking block (17) is slidably sleeved on the liquid inlet pipe (9).

3. The impurity filtration device for recovering acidic etching solution according to claim 1, characterized in that: Both ends of the outer surface of the tank (6) are welded with connecting frames (7), and the end of the connecting frame (7) facing away from the tank (6) is welded inside the outer shell (5).

4. The impurity filtration device for recovering acidic etching solution according to claim 1 or 2, characterized in that: The bottom surface of the outer shell (5) is welded with a support plate (1), and a bearing plate (4) is installed on the bottom surface of the support plate (1).

5. The impurity filtration device for recovering acidic etching solution according to claim 1, characterized in that: A discharge pipe (2) is embedded and fixed on the bottom end face of the tank (6). The discharge pipe (2) is connected to the tank (6), and a valve is installed on the discharge pipe (2) through a flange.

6. The impurity filtration device for recovering acidic etching solution according to claim 1, characterized in that: Both ends of the connecting shaft (11) are welded with fixing brackets (12), and the end of the fixing bracket (12) facing away from the connecting shaft (11) is welded inside the tank body (6).

7. The impurity filtration device for recovering acidic etching solution according to claim 1, characterized in that: The bottom end face of the liquid inlet pipe (9) is embedded and fixed inside the tank body (6), and the tank body (6) is in liquid communication with the liquid inlet pipe (9).

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