Sedimentation tank for recycling waste etching liquid of PCB (Printed Circuit Board)

Abstract

The utility model discloses a sedimentation tank for recycling PCB waste etching liquid, and relates to the technical field of PCB waste etching liquid recycling, the sedimentation tank comprises a sedimentation tank body, one end of the bottom wall of the sedimentation tank body is provided with a stand column, the top end of the stand column is movably provided with a first hinge seat, the top of the first hinge seat is provided with a filter box, and the filter box is in a right trapezoid shape; waste liquid is filtered through the arranged turnable filtering box, the obliquely arranged filtering box facilitates natural flowing and filtering of the liquid, the multiple sets of filtering sieve plates with the sieve hole diameters gradually reduced from top to bottom are arranged in the filtering box, a multi-stage filtering structure is formed, copper particles with different diameters in the waste etching liquid are effectively intercepted, and the copper particles are effectively filtered. According to the device, copper particles are prevented from being deposited in a sedimentation tank, great convenience is provided for subsequent extraction and storage of waste liquid, the inclination angle of the filter box can be flexibly adjusted through the arranged movable storage sleeve and telescopic rod, and the device can meet the filtering requirements under different working conditions.

Description

Technical Field

[0001] This utility model relates to the field of PCB board waste etching solution recycling technology, specifically to a sedimentation tank for recycling PCB board waste etching solution. Background Technology

[0002] In PCB manufacturing, etching is a critical process. Its purpose is to remove unwanted copper conductors from the surface of the copper-clad laminate, leaving copper conductors to form circuit patterns. As the etching process proceeds, the effective components in the etching solution are continuously consumed, while the copper ion concentration gradually increases and the solution ages, resulting in a decrease in etching capacity that cannot meet production requirements. At this point, the etching solution needs to be replaced, thus generating a large amount of waste etching solution.

[0003] When etching PCB boards with etching solution, some PCB boards have copper particles on their surface during the production process. These copper particles will peel off during etching and will not be completely dissolved. However, when recycling waste etching solution, it is often directly poured into a sedimentation tank. At this time, a certain amount of copper particles in the waste etching solution will settle to the bottom of the sedimentation tank, which is not easy to collect. Furthermore, it will affect the purification of the waste liquid, increase the complexity of subsequent processes, and reduce the efficiency of waste liquid purification. Utility Model Content

[0004] The purpose of this utility model is to provide a sedimentation tank for recycling waste etching solution from PCB boards, so as to solve the technical problems mentioned in the background art.

[0005] The technical problem to be solved by this utility model can be achieved through the following technical solution:

[0006] A sedimentation tank for recycling waste etching solution from PCB boards, comprising a sedimentation tank,

[0007] A column is provided at one end of the bottom wall of the sedimentation tank. A hinge seat is movably provided at the top of the column. A filter box is provided at the top of the hinge seat. The filter box is a right trapezoid. Several sets of supporting side plates are provided on the inner top wall of the sedimentation tank and the inclined side wall of the filter box. Several sets of filter screens are provided inside the filter box. The diameter of the screen holes of the filter screens gradually decreases. A liquid inlet is provided at one end of the top of the filter box. A drain nozzle is provided at the bottom of the filter box away from the liquid inlet. A sealing plate is provided inside the filter box. The sealing plate is located between the filter screen and the drain nozzle. A triangular cover plate is inserted into the top of the filter box. Insertion grooves matching the triangular cover plate are opened on both the supporting side plates and the filter box.

[0008] In its initial state, the triangular cover plate is inserted into the support side plate to form a sealed structure with the filter box for the top space of the sedimentation tank.

[0009] Preferably, a drain pipe is provided at the bottom of one end of the sedimentation tank, and a flow valve is provided on the drain pipe.

[0010] Preferably, the top of the sedimentation tank is provided with symmetrical side grooves at the end away from the hinge seat, and guide rods are provided inside the side grooves.

[0011] Preferably, a hinge seat two is slidably sleeved on the outer side of the guide slide rod, a storage sleeve is provided on the hinge seat two, and a telescopic rod is slidably arranged inside the storage sleeve.

[0012] Preferably, the top end of the telescopic rod is provided with a transverse sleeve, and the telescopic rod is provided with several sets of equally spaced pin grooves. The storage sleeve is provided with a pin that matches the pin grooves for fixing the telescopic rod.

[0013] Preferably, the transverse sleeve has an end rod movably disposed inside, and both ends of the end rod are provided with pin grooves. One end of the transverse sleeve is provided with a screw that matches the pin grooves for fixing the end rod.

[0014] Preferably, the bottom of the hinge seat 2 is provided with an L-shaped plate, and a fixing frame is provided on one side of the L-shaped plate.

[0015] Preferably, the sedimentation tank has push-pull screws symmetrically arranged on both sides of one end with the side groove, and the bottom of the push-pull screws has a limiting groove that matches the L-shaped plate.

[0016] Preferably, a limiting groove matching the fixing frame is provided on one side of the push-pull screw.

[0017] Preferably, the filter box has symmetrical positioning grooves on both sides of the end away from the drain nozzle, which match the end rod.

[0018] The beneficial effects of this utility model are:

[0019] 1. In this utility model, the waste liquid is filtered by a flip-up filter box. The tilted filter box facilitates the natural flow and filtration of the liquid. The filter box is equipped with multiple filter screens with the screen hole diameter gradually decreasing from top to bottom, forming a multi-stage filtration structure. This effectively intercepts copper particles of different diameters in the waste etching liquid, preventing the copper particles from settling in the sedimentation tank. This provides great convenience for the subsequent extraction and storage of the waste liquid. Furthermore, the movable storage sleeve and telescopic rod can flexibly adjust the tilt angle of the filter box to adapt to the filtration needs under different working conditions.

[0020] 2. In this utility model, when the device is not in use, the triangular cover plate can be removed from the filter box and installed on the support side plate. Thus, the triangular cover plate and the filter box are assembled into a complete rectangle, which can seal the top of the sedimentation tank and prevent debris from falling into the interior of the sedimentation tank when the device is not in use. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 This is a three-dimensional schematic diagram of the device in this utility model;

[0023] Figure 2 This is a three-dimensional schematic diagram of the column in this utility model;

[0024] Figure 3 This is a schematic diagram of the overall structure of the device in this utility model;

[0025] Figure 4 This is a schematic diagram of the filter screen plate structure in this utility model;

[0026] Figure 5 This is a schematic diagram of the transverse sleeve structure in this utility model;

[0027] Figure 6 This is a three-dimensional schematic diagram of the L-shaped plate in this utility model.

[0028] In the diagram: 1. Sedimentation tank; 2. Drain pipe; 3. Support side plate; 4. Column; 5. Hinge seat one; 6. Filter box; 7. Filter screen plate; 8. Inlet hopper; 9. Drain nozzle; 10. Sealing plate; 11. Triangular cover plate; 12. Side groove; 13. Guide slide rod; 14. Hinge seat two; 15. Storage sleeve; 16. Telescopic rod; 17. Horizontal sleeve; 18. Pin groove one; 19. End rod; 20. Pin groove two; 21. L-shaped plate; 22. Fixing frame; 23. Push-pull screw; 24. Limiting groove one; 25. Limiting groove two; 26. Positioning groove. Detailed Implementation

[0029] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0030] like Figure 1-6 As shown, a sedimentation tank for recycling waste etching solution of PCB board includes a sedimentation tank 1. The sedimentation tank 1 serves as the basic frame of the entire device, providing installation positions for other structures and ensuring the stability of other structures during operation.

[0031] A column 4 is installed at one end of the bottom wall of sedimentation tank 1. A hinged seat 5 is movably installed at the top of the column 4. A filter box 6 is installed on the top of the hinged seat 5. The filter box 6 is a right trapezoid. Several sets of supporting side plates 3 are installed on the inner top wall of sedimentation tank 1 and the inclined side wall of filter box 6. Several sets of filter screens 7 are installed inside filter box 6. The diameter of the screen holes of the filter screens 7 gradually decreases. An inlet hopper 8 is installed at one end of the top of filter box 6. A drain nozzle 9 is installed at the bottom of filter box 6 away from the inlet hopper 8. A sealing plate 10 is installed inside filter box 6 and is located between the filter screens 7 and the drain nozzle 9. A triangular cover plate 11 is inserted into the top of filter box 6. The supporting side plates 3 and the filter box 6 are connected to each other. Each of the three sections has a matching insertion groove for the triangular cover plate 11. In the initial state, the triangular cover plate 11 is inserted into the support side plate 3 and forms a sealed structure with the filter box 6 for the top space of the sedimentation tank 1. The top of the sedimentation tank 1, away from the hinge seat 5, has symmetrically provided side grooves 12. The side groove 12 is provided with a guide slide rod 13. The outer side of the guide slide rod 13 is slidably fitted with a hinge seat 14. The hinge seat 14 is provided with a storage sleeve 15. The storage sleeve 15 is slidably fitted with a telescopic rod 16. The top of the telescopic rod 16 is provided with a transverse sleeve 17. The telescopic rod 16 has several sets of equidistantly distributed pin grooves 18. The storage sleeve 15 is provided with a pin that matches the pin grooves 18 for fixing the telescopic rod 16. The transverse sleeve 17 is provided with a pin shaft. The internal movable part of the 7 is equipped with an end rod 19, both ends of which are provided with pin grooves 20. One end of the transverse sleeve 17 is provided with a screw that matches the pin grooves 20 for fixing the end rod 19. The bottom of the hinge seat 14 is provided with an L-shaped plate 21, and a fixing frame 22 is provided on one side of the L-shaped plate 21. The sedimentation tank 1 has push-pull screws 23 symmetrically arranged on both sides of the side groove 12. The bottom of the push-pull screw 23 is provided with a limiting groove 24 that matches the L-shaped plate 21, and the side of the push-pull screw 23 is provided with a limiting groove 25 that matches the fixing frame 22. The filter box 6 has positioning grooves 26 symmetrically arranged on both sides of the end away from the drain nozzle 9 that match the end rod 19. When using the device, first insert the triangular cover plate 11 into the filter. The top of the filter box 6 forms a sealed space. Then, the filter box 6 is flipped over, rotating upwards around the hinge seat 5. At this point, the inlet hopper 8 on the filter box 6 is at its highest point for introducing waste liquid, and the drain nozzle 9 on the filter box 6 is at its lowest point for discharging the filtered liquid. The tilted design of the filter box 6 facilitates natural liquid flow and filtration. Multiple sets of filter screens 7 with gradually decreasing mesh diameters from top to bottom are installed inside the filter box 6, forming a multi-stage filtration structure that effectively intercepts copper particles of different diameters in the waste etching solution, preventing copper particles from depositing in the sedimentation tank 1. The sealing plate 10 inside the filter box 6 controls the liquid flow path, preventing excessive liquid residue at the lowest point of the filter box 6. When adjusting the tilt angle of the filter box 6...The operator can first flip the storage sleeve 15 and the telescopic rod 16 out of the side groove 12, and then pull the hinge seat 14 to the target position by pushing and pulling the screw 23. The screw 23 is equipped with a nut. After adjustment, the nut can be tightened to fix the hinge seat 14. Then the operator can adjust the extension length of the telescopic rod 16. After adjustment, the pin is inserted into the corresponding pin groove 18 to fix the telescopic rod 16. Finally, the end rod 19 at the top of the telescopic rod 16 is taken out from the transverse sleeve 17, fixed by the screw, and inserted into the positioning groove 26 of the filter box 6. The bottom of the filter box 6 is supported by the column 4, and the top of the filter box 6 is supported by the storage sleeve 15 and the telescopic rod 16, ensuring the stability of the filter box 6 during use. When cleaning is required, the triangular cover plate 11 can be removed. The filter box 6 is designed as a right-angled trapezoid. During use, the triangular cover plate 11 can be inserted into the top of the filter box 6 to form a sealed space for filtering waste liquid. When not in use, the triangular cover plate 11 can be removed, at which point the triangular cover plate 11 and the filter box 6 are assembled into a complete rectangle, thus sealing the top of the sedimentation tank 1 and preventing debris from falling into the interior of the sedimentation tank 1 when the device is not in use.

[0032] In this embodiment, specifically, a drain pipe 2 is provided at the bottom of one end of the sedimentation tank 1, and a flow valve is provided on the drain pipe 2.

[0033] The content not described in detail in this document is prior art known to those skilled in the art.

[0034] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A sedimentation tank for recycling waste etching solution from PCB boards, comprising a sedimentation tank (1), characterized in that: A column (4) is provided at one end of the bottom wall of the sedimentation tank (1). A hinge seat (5) is movably provided at the top of the column (4). A filter box (6) is provided at the top of the hinge seat (5). The filter box (6) is a right trapezoid. Several sets of supporting side plates (3) are provided on the inner top wall of the sedimentation tank (1) and the inclined side wall of the filter box (6). Several sets of filter screens (7) are provided inside the filter box (6). The diameter of the sieve holes of the several sets of filter screens (7) gradually increases. The filter box (6) is reduced in size. One end of the top is provided with an inlet hopper (8), and the bottom of the filter box (6) away from the inlet hopper (8) is provided with a drain nozzle (9). The filter box (6) is provided with a sealing plate (10) inside, and the sealing plate (10) is located between the filter screen plate (7) and the drain nozzle (9). A triangular cover plate (11) is inserted into the top of the filter box (6), and the support side plate (3) and the filter box (6) are both provided with insertion slots that match the triangular cover plate (11). In the initial state, the triangular cover plate (11) is inserted into the support side plate (3) and forms a sealed structure with the filter box (6) for the top space of the sedimentation tank (1).

2. A sedimentation tank for recycling waste etching solution from PCB boards according to claim 1, characterized in that, The sedimentation tank (1) is provided with a drain pipe (2) at one end of the bottom, and a flow valve is provided on the drain pipe (2).

3. A sedimentation tank for recycling waste etching solution from PCB boards according to claim 1, characterized in that, The sedimentation tank (1) has a side groove (12) symmetrically opened at the top end away from the hinge seat (5), and a guide slide rod (13) is provided inside the side groove (12).

4. A sedimentation tank for recycling waste etching solution from PCB boards according to claim 3, characterized in that, The guide slide rod (13) is slidably sleeved with a second hinge seat (14), and a storage sleeve (15) is provided on the second hinge seat (14). A telescopic rod (16) is slidably provided inside the storage sleeve (15).

5. A sedimentation tank for recycling waste etching solution from PCB boards according to claim 4, characterized in that, The top end of the telescopic rod (16) is provided with a transverse sleeve (17), and the telescopic rod (16) is provided with several sets of equally spaced pin grooves (18). The storage sleeve (15) is provided with a pin that matches the pin grooves (18) for fixing the telescopic rod (16).

6. A sedimentation tank for recycling waste etching solution from PCB boards according to claim 5, characterized in that, The transverse sleeve (17) is movably provided with an end rod (19), and both ends of the end rod (19) are provided with pin grooves (20). One end of the transverse sleeve (17) is provided with a screw that matches the pin grooves (20) for fixing the end rod (19).

7. A sedimentation tank for recycling waste etching solution from PCB boards according to claim 4, characterized in that, The bottom of the hinge seat 2 (14) is provided with an L-shaped plate (21), and a fixing frame (22) is provided on one side of the L-shaped plate (21).

8. A sedimentation tank for recycling waste etching solution from PCB boards according to claim 7, characterized in that, The sedimentation tank (1) has a side groove (12) with push-pull screws (23) symmetrically arranged on both sides of one end. The bottom of the push-pull screw (23) has a limiting groove (24) that matches the L-shaped plate (21).

9. A sedimentation tank for recycling waste etching solution from PCB boards according to claim 8, characterized in that, The push-pull screw (23) has a limiting groove (25) on one side that matches the fixing frame (22).

10. A sedimentation tank for recycling waste etching solution from PCB boards according to claim 5, characterized in that, The filter box (6) has symmetrical positioning grooves (26) on both sides of the end away from the drain nozzle (9) that match the end rod (19).

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