A waste gas treatment device for circuit board manufacturing

Abstract

This utility model discloses a waste gas treatment device for circuit board production, including an inlet pipe and a treatment tank. A cover is connected to the top of the treatment tank, which contains an alkaline treatment solution. An aeration pipe immersed in the alkaline treatment solution is installed inside the treatment tank. An activated carbon treatment box is located on one side of the treatment tank, and a UV treatment box is located on the other side of the activated carbon treatment box. This utility model introduces waste gas generated during circuit board production into the treatment tank, where it reacts with the alkaline treatment solution to remove acidic gases and dust. The gas is then further treated in the activated carbon treatment box to adsorb moisture and residual pollutants. Finally, the waste gas passes through the UV treatment box to treat organic waste gases. Compared to existing single-treatment methods, this utility model features high treatment efficiency and good treatment effect.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board manufacturing technology, and specifically relates to a waste gas treatment device for circuit board manufacturing. Background Technology

[0002] During the circuit board manufacturing process, etching, electroplating, and developing processes generate a large amount of mixed waste gas containing acidic gases (such as HCl and H2SO4), organic waste gas (such as VOCs), and dust. To protect the environment, it is necessary to treat the waste gas generated during circuit board manufacturing.

[0003] However, traditional waste gas treatment methods typically employ a single spray tower or activated carbon adsorption, which suffers from problems such as low treatment efficiency, easy equipment corrosion, and secondary pollution. Utility Model Content

[0004] The purpose of this invention is to provide a waste gas treatment device for circuit board manufacturing, thereby solving the problems mentioned in the background section. The waste gas treatment device for circuit board manufacturing provided by this invention features high treatment efficiency and good treatment effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waste gas treatment device for circuit board production, comprising an air inlet pipe and a treatment tank, a cover connected to the top of the treatment tank, an alkaline treatment liquid inside the treatment tank, an aeration pipe immersed in the alkaline treatment liquid inside the treatment tank, a first fan installed on the air inlet pipe, the outlet end of the air inlet pipe connected to the aeration pipe, an activated carbon treatment box on one side of the treatment tank, the activated carbon treatment box and the treatment tank being connected by a connecting pipe, the end of the connecting pipe passing through the cover and located at the top of the treatment tank, a UV treatment box on one side of the activated carbon treatment box, the UV treatment box and the activated carbon treatment box also being connected by a connecting pipe, and an exhaust pipe connected to the UV treatment box.

[0006] To facilitate the addition of alkaline treatment solution to the treatment tank, a filling port is further provided on the top of the cap.

[0007] To facilitate the discharge of wastewater from the treatment tank and the replacement of the alkaline treatment solution, a discharge port is further provided at the bottom of the treatment tank.

[0008] In order to send the exhaust gas from the treatment tank into the activated carbon treatment box, a second fan is further installed on the connecting pipe between the activated carbon treatment box and the treatment tank.

[0009] To facilitate intuitive measurement of the amount of alkaline treatment solution in the treatment tank, a level gauge is further installed on the treatment tank.

[0010] To facilitate timely addition of the treatment solution and ensure that the pH value of the treatment solution is between 9 and 10, a pH detector is further installed on the treatment tank, with the detection end of the pH detector immersed in the alkaline treatment solution.

[0011] To facilitate the replacement of activated carbon, the activated carbon treatment box further includes an activated carbon box body, into which several activated carbon pull-out frames are inserted.

[0012] To further treat organic waste gas, the UV treatment box includes a UV box body, a UV lamp installed at the upper part of the UV box body, a transparent glass plate below the UV lamp, a pull-out box below the glass plate, and several partitions inside the pull-out box, which divide the internal space of the pull-out box into a wave shape.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model introduces the waste gas generated during circuit board production into a treatment tank, where it reacts with the alkaline treatment liquid to remove acidic gases and dust from the waste gas. Then, it undergoes further treatment in an activated carbon treatment box to adsorb moisture and residual pollutants. Finally, it passes through a UV treatment box to treat the organic waste gas. Compared with the single treatment method in the prior art, this utility model has the characteristics of high treatment efficiency and good treatment effect.

[0015] 2. The treatment tank of this utility model is equipped with a pH detector to detect the pH value of the alkaline treatment solution in the treatment tank, so as to facilitate timely addition of treatment solution and ensure that the pH value of the treatment solution is between 9 and 10.

[0016] 3. The treatment tank of this utility model is equipped with a level gauge, which makes it easy to intuitively obtain the amount of alkaline treatment liquid in the treatment tank.

[0017] 4. This utility model uses a UV lamp to irradiate the waste gas, thereby oxidizing and decomposing the small molecule organic matter in the waste gas, thus achieving the treatment of organic waste gas. Attached Figure Description

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

[0019] Figure 2 This is a schematic diagram of the activated carbon treatment box of this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the UV treatment box of this utility model.

[0021] In the diagram: 1. Air inlet pipe; 2. First blower; 3. Cover; 4. Feeding port; 5. Connecting pipe; 6. Treatment tank; 7. UV treatment box; 71. UV box body; 72. UV lamp; 73. Glass plate; 74. Partition; 75. Pull-out box; 8. Activated carbon treatment box; 81. Activated carbon box body; 82. Activated carbon pull-out frame; 9. Second blower; 10. Discharge port; 11. Aeration pipe; 12. pH detector; 13. Level gauge. Detailed Implementation

[0022] 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.

[0023] Example 1

[0024] Please see Figures 1-3 This utility model provides the following technical solution: a waste gas treatment device for circuit board production, including an inlet pipe 1 and a treatment tank 6. The treatment tank 6 is preferably made of fiberglass. A cover 3 is connected to the top of the treatment tank 6. The inside of the treatment tank 6 is filled with an alkaline treatment liquid, which is a NaOH solution with a pH value of 9-10. An aeration pipe 11 immersed in the alkaline treatment liquid is provided inside the treatment tank 6. A first fan 2 is installed on the inlet pipe 1. The outlet end of the inlet pipe 1 is connected to the aeration pipe 11. An activated carbon treatment box 8 is provided on one side of the treatment tank 6. The activated carbon treatment box 8 is connected to the treatment tank 6 through a connecting pipe 5. The end of the connecting pipe 5 passes through the cover 3 and is located at the upper end of the treatment tank 6. A UV treatment box 7 is provided on one side of the activated carbon treatment box 8. The UV treatment box 7 is also connected to the activated carbon treatment box 8 through a connecting pipe. An exhaust pipe is also connected to the UV treatment box 7.

[0025] By adopting the above technical solution, this utility model introduces the waste gas generated during circuit board production into the treatment tank 6, where it reacts with the alkaline treatment liquid in the treatment tank 6 to remove acidic gases and dust from the waste gas. Then, it undergoes further treatment in the activated carbon treatment box 8 to adsorb the moisture and residual pollutants contained in the waste gas. Finally, it passes through the UV treatment box 7 to treat the organic waste gas in the waste gas. Compared with the single treatment method in the prior art, this utility model has the characteristics of high treatment efficiency and good treatment effect.

[0026] Specifically, a filling port 4 is provided above the cap 3.

[0027] By adopting the above technical solution, it is convenient to add alkaline treatment solution into treatment tank 6.

[0028] Specifically, the bottom of the processing tank 6 is provided with a discharge port 10, and valves are installed on both the feeding port 4 and the discharge port 10.

[0029] By adopting the above technical solution, it is easy to discharge the wastewater in treatment tank 6 and replace it with new alkaline treatment solution. The discharged wastewater is then sent to a wastewater treatment plant for further treatment.

[0030] Specifically, a second fan 9 is installed on the connecting pipe 5 between the activated carbon treatment box 8 and the treatment tank 6.

[0031] By adopting the above technical solution, the waste gas in the treatment tank 6 is sent into the activated carbon treatment box 8.

[0032] Specifically, a level gauge 13 is installed on the processing tank 6.

[0033] By adopting the above technical solution, it is easy to intuitively obtain the amount of alkaline treatment liquid in treatment tank 6.

[0034] Example 2

[0035] The difference between this embodiment and embodiment 1 is that, specifically, a pH detector 12 is installed on the treatment tank 6, and the detection end of the pH detector 12 is immersed in the alkaline treatment solution. The pH detector 12 is purchased from the market.

[0036] By adopting the above technical solution, the pH value of the alkaline treatment solution in the treatment tank 6 is detected, which facilitates timely addition of treatment solution and ensures that the pH value of the treatment solution is between 9 and 10.

[0037] Example 3

[0038] The difference between this embodiment and embodiment 1 is that, specifically, the activated carbon treatment box 8 includes an activated carbon box body 81, and a plurality of activated carbon pull-out frames 82 are inserted inside the activated carbon box body 81, with activated carbon disposed inside the activated carbon pull-out frames 82.

[0039] By adopting the above technical solution, it is easy to replace the activated carbon, which generally needs to be replaced every three months.

[0040] Example 4

[0041] The difference between this embodiment and Embodiment 1 is that, specifically, the UV treatment box 7 includes a UV box body 71, a UV lamp 72 is installed at the upper end of the UV box body 71, the lamp tube of the UV lamp 72 is coated with a titanium dioxide coating, the wavelength of the UV lamp 72 is 365nm, a transparent glass plate 73 is provided below the UV lamp 72, and a pull-out box 75 is provided below the glass plate 73. The pull-out box 75 has several partitions 74 inside, which divide the internal space of the pull-out box 75 into a wave shape to increase the flow of exhaust gas and ensure that the small organic molecules in the exhaust gas can be completely oxidized and decomposed.

[0042] By adopting the above technical solution, the waste gas is irradiated with a UV lamp 72 to oxidize and decompose the small molecule organic matter in the waste gas, thereby achieving the treatment of organic waste gas.

[0043] In summary, this invention introduces waste gas generated during circuit board production into a treatment tank 6, where it reacts with an alkaline treatment solution to remove acidic gases and dust. The gas then undergoes further treatment in an activated carbon treatment box 8 to adsorb moisture and residual pollutants. Finally, it passes through a UV treatment box 7 to treat the organic waste gas. Compared to existing single-treatment methods, this invention offers higher treatment efficiency and better treatment results. A pH detector 12 is installed on the treatment tank 6 to monitor the pH value of the alkaline treatment solution, facilitating timely replenishment and maintaining a pH of 9-10. A level gauge 13 is also installed on the treatment tank 6 for easy and intuitive monitoring of the alkaline treatment solution level. Finally, a UV lamp 72 irradiates the waste gas, oxidizing and decomposing small-molecule organic matter, thereby achieving the treatment of organic waste gas.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas treatment device for a circuit board production, characterized by: It includes an air inlet pipe and a treatment tank. The treatment tank is connected to a cap at the top and contains an alkaline treatment solution inside. The treatment tank is equipped with an aeration pipe immersed in the alkaline treatment solution. A first blower is installed on the air inlet pipe, and the air outlet of the air inlet pipe is connected to the aeration pipe. An activated carbon treatment box is located on one side of the treatment tank. The activated carbon treatment box is connected to the treatment tank by a connecting pipe. The end of the connecting pipe passes through the cap and is located at the top of the treatment tank. A UV treatment box is located on one side of the activated carbon treatment box. The UV treatment box is also connected to the activated carbon treatment box by a connecting pipe. An exhaust pipe is also connected to the UV treatment box.

2. The exhaust gas treatment apparatus for a circuit board production according to claim 1, characterized by: The cap has a filling port on top.

3. The exhaust gas treatment apparatus for a circuit board production according to claim 1, characterized by: The bottom of the processing tank is equipped with a discharge port.

4. The exhaust gas treatment apparatus for a circuit board production according to claim 1, characterized by: A second fan is installed on the connecting pipe between the activated carbon treatment box and the treatment tank.

5. The exhaust gas treatment apparatus for a circuit board production according to claim 1, characterized by: The processing tank is equipped with a level gauge.

6. The waste gas treatment device for circuit board manufacturing according to claim 1, characterized in that: The treatment tank is equipped with a pH detector, and the detection end of the pH detector is immersed in the alkaline treatment solution.

7. The exhaust gas treatment apparatus for a circuit board production according to claim 1, characterized by: The activated carbon treatment box includes an activated carbon box body, into which several activated carbon pull-out frames are inserted.

8. The exhaust gas treatment apparatus for a circuit board production according to claim 1, characterized by: The UV treatment box includes a UV box body, a UV lamp installed at the upper part of the UV box body, a transparent glass plate below the UV lamp, a pull-out box below the glass plate, and several partitions inside the pull-out box, which divide the internal space of the pull-out box into a wave shape.

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