An acid etching solution recovery device

Abstract

This utility model discloses an acidic etching solution recovery device, including a vessel body and a cover plate. The cover plate covers the top of the vessel body. An inlet is located on one side of the top of the vessel body, and an outlet is located at the bottom of the vessel body. A reflux unit is located at the outlet. A stirring unit is located inside the vessel body, and a driving unit is located in the middle of the cover plate. The driving unit drives the stirring unit to operate. The cover plate has several uniformly distributed through holes, through which electrode rods pass. The stirring unit and the reflux unit cooperate to allow the solution to flow. This utility model uses a front bottom column and a rear bottom plate in combination, and employs a reflux unit to pump the solution from the bottom of the vessel body to the top, allowing the solutions in the upper and lower layers of the vessel body to mix. Combined with the stirring unit, this causes the solution inside the vessel body to flow, ensuring thorough mixing and allowing the solution to flow through the electrode rods, achieving full contact between the solution and the electrode rods, thus improving the recovery efficiency of nickel and silver.

Description

Technical Field

[0001] This utility model relates to etching solution technology, specifically an acidic etching solution recovery device. Background Technology

[0002] An integrated circuit (IC) is a miniature electronic device or component. Using specific processes, transistors, resistors, capacitors, inductors, and interconnections required for a circuit are fabricated on one or more small pieces of semiconductor wafer or dielectric substrate, and then packaged in a casing to form a miniature structure with the desired circuit function. All components are structurally integrated, representing a significant step forward in miniaturization, low power consumption, intelligence, and high reliability of electronic components. The IC board requires the use of titanium-nickel-silver etching solution to etch excess metal from the circuit board.

[0003] Generally, the etching of circuit boards is a chemical etching process. The etching solution after etching is a salt solution containing a high concentration of nickel-silver ions and other chemical substances. If these salt solutions are directly discharged into the environment, it will cause significant pollution and waste nickel-silver resources. In the past, the treatment of these waste liquids was generally handed over to qualified hazardous waste treatment companies for recycling and treatment, and nickel-silver was deposited through the reduction of the cathode. However, in traditional acid etching solution regeneration equipment, the contact between the solution and the electrode rod is not sufficient, and the nickel-silver ions can only move slowly through the potential difference, resulting in low nickel-silver recovery efficiency. Utility Model Content

[0004] To address the shortcomings of the prior art, this invention provides an acidic etching solution recovery device that can form a liquid flow by stirring and pumping the solution, thereby achieving rapid flow of the solution and ensuring full contact with the electrode rod, thus improving the recovery efficiency of nickel and silver.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: an acidic etching solution recovery device, comprising a vessel body and a cover plate, wherein the cover plate is disposed on the top of the vessel body, an inlet is provided on one side of the top of the vessel body, an outlet is provided at the bottom of the vessel body, a reflux unit is provided at the outlet, a stirring unit is provided inside the vessel body, and a driving unit is provided in the middle of the cover plate, the driving unit drives the stirring unit to work, the cover plate is uniformly provided with a plurality of through holes, an electrode rod is inserted through the through holes, and the stirring unit and the reflux unit cooperate to make the solution flow.

[0006] Preferably, the stirring unit includes a stirring shaft, the top end of which is rotatably connected to a cover plate, and the stirring shaft is evenly provided with a plurality of stirring blades from top to bottom.

[0007] Preferably, the drive unit includes a motor and a gearbox, the motor is fixed to the vessel body, and the motor is connected to the stirring shaft via the gearbox.

[0008] Preferably, the reflux unit includes a liquid pump, a three-way valve, and a reflux pipe. One end of the liquid pump is connected to the liquid outlet, and the other end of the liquid pump is connected to one end of the three-way valve. The other two ends of the three-way valve are respectively connected to the reflux pipe and the liquid outlet pipe, and the reflux pipe is connected to the vessel body.

[0009] Preferably, the cover plate is provided with an exhaust port, which is used to release excess gas inside the vessel.

[0010] Preferably, the electrode rod has a limiting plate at its top end, and the diameter of the limiting plate is larger than the inner diameter of the through hole.

[0011] Preferably, the electrode rod includes a cathode rod and an anode rod.

[0012] In summary, this utility model achieves the following technical effects:

[0013] The acid etching solution recovery device of this invention adopts a reflux unit, which can pump the solution at the bottom of the vessel to the top of the vessel, so that the solutions in the upper and lower layers of the vessel can be mixed. In conjunction with the stirring unit, the solution in the vessel is made to flow, so that the solution is fully mixed and can flow through the electrode rod, so as to achieve full contact between the solution and the electrode rod, thereby improving the recovery efficiency of nickel and silver. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the internal structure of the acid etching solution recovery device of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the acid etching solution recovery device of this utility model;

[0016] Explanation of the markings on the attached drawings: 1. Vessel body; 2. Cover plate; 3. Liquid inlet; 4. Electrode rod; 5. Limiting plate; 6. Motor; 7. Gearbox; 8. Exhaust port; 9. Stirring shaft; 10. Stirring blade; 11. Liquid outlet; 12. Liquid pump; 13. Three-way valve; 14. Return pipe. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] Example 1:

[0024] like Figure 1As shown in Figure 2, an acidic etching solution recovery device includes a vessel body 1 and a cover plate 2. The cover plate 2 covers the top of the vessel body 1. The top side of the vessel body 1 is provided with a liquid inlet 3, and the bottom of the vessel body 1 is provided with a liquid outlet 11. The liquid outlet 11 is provided with a reflux unit. The vessel body 1 is provided with a stirring unit. The cover plate 2 is provided with a driving unit in the middle. The driving unit drives the stirring unit to work. The cover plate 2 is provided with a plurality of through holes evenly distributed. Electrode rods 4 pass through the through holes. The stirring unit and the reflux unit cooperate to make the solution flow.

[0025] The acid etching solution recovery device of this embodiment adopts a reflux unit, which can pump the solution pump 12 at the bottom of the vessel 1 to the top of the vessel 1, so that the upper and lower layers of solution in the vessel 1 can be mixed. In conjunction with the stirring unit, the solution in the vessel 1 is made to flow, so that the solution is fully mixed and can flow through the electrode rod 4, so as to achieve full contact between the solution and the electrode rod 4 and improve the recovery efficiency of nickel and silver.

[0026] The stirring unit includes a stirring shaft 9, the top of which is rotatably connected to the cover plate 2. The stirring shaft 9 is evenly provided with several stirring blades 10 from top to bottom. The stirring shaft 9 drives the stirring blades 10 to rotate, which can stir the solution in the vessel 1 and make the solution fully mixed.

[0027] The drive unit includes a motor 6 and a gearbox 7. The motor 6 is fixed to the vessel body 1 and is connected to the stirring shaft 9 via the gearbox 7.

[0028] The reflux unit includes a liquid pump 12, a three-way valve 13, and a reflux pipe 14. One end of the liquid pump 12 is connected to the liquid outlet 11, and the other end of the liquid pump 12 is connected to one end of the three-way valve 13. The other two ends of the three-way valve 13 are connected to the reflux pipe 14 and the liquid outlet pipe, respectively. The reflux pipe 14 is connected to the vessel body 1. When the liquid pump 12 draws the solution to the three-way valve 13 for recycling, the three-way valve 13 connects the reflux pipe 14 and closes the liquid outlet pipe, so that the solution pump 12 at the bottom of the vessel body 1 delivers the solution to the top of the vessel body 1, allowing the upper and lower layers of solution in the vessel body 1 to mix. When the recycling operation is finished, the three-way valve 13 closes the reflux pipe 14 and connects the liquid outlet pipe to discharge the solution.

[0029] The cover plate 2 is provided with an exhaust port 8, which is used to release excess gas in the vessel body 1.

[0030] The electrode rod 4 is provided with a limiting plate 5 at its top end. The diameter of the limiting plate 5 is larger than the inner diameter of the through hole. The electrode rod 4 includes a cathode rod and an anode rod. The limiting plate 5 allows operators to quickly replace the electrode rod 4.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. An acidic etching solution recovery device, characterized in that, The device includes a vessel body and a cover plate. The cover plate covers the top of the vessel body. The top of the vessel body has a liquid inlet on one side and a liquid outlet at the bottom. The liquid outlet is equipped with a reflux unit. The vessel body is equipped with a stirring unit. The cover plate has a driving unit in the middle. The driving unit drives the stirring unit to work. The cover plate is evenly provided with several through holes. Electrode rods pass through the through holes. The stirring unit and the reflux unit cooperate to make the solution flow.

2. The acid etching solution recovery device according to claim 1, characterized in that, The stirring unit includes a stirring shaft, the top of which is rotatably connected to a cover plate, and the stirring shaft is evenly provided with several stirring blades from top to bottom.

3. The acid etching solution recovery device according to claim 2, characterized in that, The drive unit includes a motor and a gearbox. The motor is fixed to the vessel body and is connected to the stirring shaft via the gearbox.

4. The acid etching solution recovery device according to claim 1, characterized in that, The reflux unit includes a liquid pump, a three-way valve, and a reflux pipe. One end of the liquid pump is connected to the liquid outlet, and the other end of the liquid pump is connected to one end of the three-way valve. The other two ends of the three-way valve are connected to the reflux pipe and the liquid outlet, respectively. The reflux pipe is connected to the vessel body.

5. The acid etching solution recovery device according to claim 1, characterized in that, The cover plate is provided with an exhaust port, which is used to release excess gas inside the vessel.

6. The acid etching solution recovery device according to claim 1, characterized in that, The electrode rod is provided with a limiting plate at its top end, and the diameter of the limiting plate is larger than the inner diameter of the through hole.

7. The acid etching solution recovery device according to claim 1, characterized in that, The electrode rod includes a cathode rod and an anode rod.

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