Gold salt recovery pollution control device

Abstract

The utility model provides a kind of gold salt recovery pollution prevention and control device, comprising: rack, lifting frame, gas injection module, PCB workpiece and gold sink tank;The lifting frame is located in the inside upper side of the rack, the PCB workpiece is located at the bottom of the lifting frame, the gold sink tank is located directly below the PCB workpiece;The gas injection module is fixedly arranged in the inside of rack by the mounting bracket of its two sides, the gas injection module is located between the lifting frame and PCB workpiece, and is located directly above the PCB workpiece;Further comprising a blower, the blower is located in the outside of the rack, the blower is connected with the gas injection module by air supply hose;The utility model solves the problem of waste and pollution caused by gold water spatter to the outside, and the problem of gold salt concentration control disorder caused by the water of spray.

Description

Technical Field

[0001] This utility model belongs to the field of electronic technology - microelectronics technology, and in particular, it is a gold salt recovery and pollution prevention control device. Background Technology

[0002] In the immersion nickel-gold process for PCB circuit board surface treatment, gold salts are one of the main cost factors, currently accounting for about 60-70% of the total cost of the immersion gold process. Moreover, the price of gold salts is high and directly affected by international gold prices. The actual deposition efficiency of gold salts is usually between 60-80%, with the remainder becoming waste in the liquid.

[0003] The immersion nickel-gold process uses an immersion chemical reaction treatment. Traditional waste gold liquid recycling involves setting up two water washing tanks after the gold tank. The PCB and hangers are washed and the gold salts brought out of the gold tank are recovered through immersion. The waste liquid from the two water washing tanks is then transferred to a precious metal recycling company for purchase and processing. The purchase price of the precious metal recycling company is far lower than the cost of the gold salts.

[0004] The industry standard CN202123243231 (A surface-applied gold salt consumption control device using a water washing and spraying device) washes and recovers gold salt and gold solution carried out by PCB workpieces into the immersion gold tank, achieving the purpose of gold salt recovery and consumption control. However, in practical applications, on the one hand, because the device sprays from a height, coupled with the issue of water volume, it is easy for gold solution to splash outside the immersion gold tank during recovery, causing some waste and, more seriously, environmental pollution. Gold solution pollution is an unacceptable environmental problem. On the other hand, if the spraying water added to the immersion gold tank is not controlled according to the actual consumption, it will lead to an imbalance in gold salt concentration control. Existing gold salt recovery processes suffer from problems such as gold solution splashing outside, causing waste and pollution, and the spraying water easily causing an imbalance in gold salt concentration control. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a gold salt recovery and pollution prevention control device, which solves the problems of gold water splashing to the outside causing waste and pollution, and the water spraying can easily cause the gold salt concentration to be out of control.

[0006] This utility model is implemented as follows:

[0007] A gold salt recovery pollution prevention and control device includes: a frame, a lifting frame, a gas blowing module, a PCB workpiece, and an immersion gold bath;

[0008] The lifting frame is located inside the upper side of the machine frame, the PCB workpiece is located at the bottom of the lifting frame, and the immersion gold tank is located directly below the PCB workpiece;

[0009] The gas jet module is fixedly mounted inside the frame by mounting brackets on both sides. The gas jet module is located between the lifting frame and the PCB workpiece, and is located directly above the PCB workpiece.

[0010] It also includes a blower, which is located outside the frame and is connected to the gas injection module via a flexible air supply hose.

[0011] Furthermore, the lifting frame includes a vibrator located at the center of the top of the lifting frame.

[0012] Furthermore, the gas jetting module includes multiple nozzles, which are 3 to 4 rows of pressure nozzles arranged in parallel on the gas jetting module.

[0013] Furthermore, the gas jetting module also includes four air knives, which are respectively located at the four corners of the gas jetting module, and the nozzle angle of the air knives is inclined inward.

[0014] This utility model provides a gold salt recovery pollution prevention and control device, which has the following advantages:

[0015] Gas jetting is used instead of water washing and rinsing. The gold solution and gold salt brought out by the PCB workpiece after passing through the immersion gold bath are blown back into the immersion gold bath by the gas jetting device. At the same time, the vibrator promotes the dripping of gold solution, which avoids a large amount of gold salt loss inside the immersion gold bath. It also avoids the splashing of dripping liquid and the pollution caused by it, and avoids the addition of water affecting the control of gold salt concentration.

[0016] This invention further improves the gold salt recovery system, which on the one hand greatly reduces costs, and on the other hand achieves environmental control to prevent pollution and stable control of gold salt concentration, thereby maintaining product quality and reliability and enhancing the company's competitiveness. Attached Figure Description

[0017] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0018] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0019] Fig. 2 This is a top sectional view of the present invention;

[0020] Fig. 3 This is an enlarged view of the gas jetting module structure of this utility model. Detailed Implementation

[0021] This embodiment provides a gold salt recovery and pollution prevention control device, such as... Figs. 1 to 3 As shown, it includes:

[0022] Frame 1, lifting frame 2, gas blowing module 3, PCB workpiece 4 and immersion gold bath 5;

[0023] The lifting frame 2 is located inside the upper side of the frame 1. The lifting frame 2 includes a vibrator 21, which is located at the top center of the lifting frame 2. When in use, the vibrator 21 vibrates to promote the dripping of gold solution when the PCB workpiece 4 comes up from the gold bath 5.

[0024] The PCB workpiece 4 is located at the bottom of the lifting frame 2, and the gold plating tank 5 is located directly below the PCB workpiece 4;

[0025] The gas jet module 3 is fixedly installed inside the frame 1 by the mounting brackets 6 on both sides. The gas jet module 3 is located between the lifting frame 2 and the PCB workpiece 4, and is located directly above the PCB workpiece 4.

[0026] The gas jet module 3 includes a plurality of nozzles 31, which are 3 to 4 rows of pressure nozzles arranged in parallel on the gas jet module 3.

[0027] The gas jet module 3 also includes four air knives 32, which are respectively located at the four corners of the gas jet module 3, and the nozzle angle of the air knives 32 is inclined inward.

[0028] It also includes a blower 7, which is located outside the frame 1 and is connected to the gas injection module 3 via a flexible air supply hose 71;

[0029] The airflow generated by the blower 7 is blown out in an extremely thin laminar flow form through the slit nozzle of the air knife 32, forming a uniform high-intensity air curtain, which efficiently removes moisture and impurities from the surface of the object. The device adjusts the angle of the air knife 32 to be tilted inward, so that when in use, the air knife 32 blows airflow from the four corners of the gas blowing module 34 directly above the PCB workpiece 4 towards the PCB workpiece 4, further preventing the gold liquid from dripping out of the gold plating tank 5. Together with the vertical airflow blown out by the nozzle 341 and the vibrator 21, it promotes the liquid on the PCB workpiece 4 to drip into the gold plating tank 5.

[0030] In use, the blower 7 delivers air to the gas blowing module 3 through the air supply hose 71. The gas is sprayed out from the nozzle 31 and the air knife 32 nozzle. The sprayed gas hits the surface of the PCB workpiece 4 and sprays the PCB workpiece 4, which is carried out of the immersion gold bath 5 by the lifting frame 2. This causes the gold solution and gold salt carried out by the PCB workpiece 4 after passing through the immersion gold bath 5 to be blown back into the immersion gold bath 5 by the gas blowing module 3. This avoids a large loss of gold salt inside the immersion gold bath 5, and also avoids the contamination caused by the dripping liquid splashing. It also avoids the addition of water affecting the gold salt concentration control.

[0031] This invention provides a gold salt recovery and pollution prevention control device, which solves the problems of gold solution splashing to the outside causing waste and pollution, and the water spraying easily causing the gold salt concentration control to be out of control. This invention uses gas spraying to replace water washing and spraying, so that the gold solution and gold salt brought out by the PCB workpiece 4 after passing through the gold immersion tank 5 are blown back to the gold immersion tank by the gas spraying device. At the same time, the vibrator 21 promotes the gold solution to drip down, avoiding a large amount of gold salt loss inside the gold immersion tank, and avoiding the splashing of dripping liquid causing pollution, and also avoiding the addition of water affecting the gold salt concentration control.

[0032] This invention further improves the gold salt recovery system, significantly reducing costs while simultaneously achieving environmentally friendly pollution control and stable gold salt concentration control, thereby maintaining product quality and reliability and enhancing the company's competitiveness.

[0033] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not 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. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0034] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A gold salt recovery and pollution prevention control device, characterized in that, include: Frame, lifting frame, gas blowing module, PCB workpiece and immersion gold bath; The lifting frame is located inside the upper side of the machine frame, the PCB workpiece is located at the bottom of the lifting frame, and the immersion gold tank is located directly below the PCB workpiece; The gas jet module is fixedly mounted inside the frame by mounting brackets on both sides. The gas jet module is located between the lifting frame and the PCB workpiece, and is located directly above the PCB workpiece. It also includes a blower, which is located outside the frame and is connected to the gas injection module via a flexible air supply hose.

2. The gold salt recovery and pollution control device as described in claim 1, characterized in that, The lifting frame includes a vibrator, which is located at the center of the top of the lifting frame.

3. The gold salt recovery and pollution prevention control device as described in claim 1, characterized in that, The gas jetting module includes multiple nozzles, which are 3 to 4 rows of pressure nozzles arranged in parallel on the gas jetting module.

4. The gold salt recovery and pollution prevention control device as described in claim 1, characterized in that, The gas jetting module also includes four air knives, which are respectively located at the four corners of the gas jetting module, and the nozzle angle of the air knives is inclined inward.

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