Waste liquid purification device for electroplated circuit board

Abstract

The utility model discloses a waste liquid purification device of an electroplating circuit board, which belongs to the field of electroplating liquid purification and comprises a waste liquid sedimentation tank, and a precipitator pneumatic mixing component is arranged above the waste liquid sedimentation tank. Compared with the prior art, the device disclosed by the utility model has the advantages that a precipitant in the precipitant pressurizing device is uniformly sprayed into the waste liquid sedimentation tank through the plurality of medicament spraying pipes of which the height is controlled by the pneumatic telescopic rod, and then the spraying state of the medicament spraying pipes is changed through the reversing valve, so that strong wind generated by the blower device is sprayed out; therefore, the mixing of the precipitant near the medicament spraying pipe and the waste liquid is accelerated, so that the mixing efficiency of the precipitant is maximized.

Description

Technical Field

[0001] This utility model relates to the field of electroplating solution purification, specifically to a waste liquid purification device for electroplating circuit boards. Background Technology

[0002] In the existing circuit board production process, in order to enhance the corrosion resistance and conductivity of the circuit board, copper is usually electroplated on one side of the circuit board. After batch electroplating, the electroplating solution contains a large number of impurities. These waste liquids are usually recycled in a unified manner and purified using a variety of purification treatments (the process generally includes classification, pretreatment, chemical precipitation, deep ion exchange treatment and discharge).

[0003] In these processes, sedimentation is mostly carried out in a dedicated waste liquid sedimentation tank. After the wastewater is added to the waste liquid sedimentation tank, a sufficient amount of precipitant is sprayed on the water surface. Through the chemical reaction between the precipitant and the wastewater, impurities in the wastewater are separated.

[0004] To accelerate mixing, manual or electric stirring is usually performed while spraying. However, due to the large area of ​​the waste liquid sedimentation tank, the mixing efficiency of the precipitant is extremely slow and the mixing degree is uneven, which greatly increases the sedimentation and purification time. Utility Model Content

[0005] The technical problem this invention aims to solve is that the precipitant in existing waste liquid purification devices for electroplated circuit boards is mostly sprayed directly onto the water surface. This makes it difficult for the precipitant to mix quickly in the waste liquid, resulting in a long sedimentation time for the waste liquid.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a waste liquid purification device for electroplating circuit boards, including a waste liquid sedimentation tank, a precipitant pneumatic mixing assembly above the waste liquid sedimentation tank, the precipitant pneumatic mixing assembly including a plurality of agent spraying pipes located above the waste liquid sedimentation tank, a diversion pipe connecting each agent spraying pipe through a threaded structure, a support plate for fixing the diversion pipe, and a plurality of pneumatic telescopic rods for driving the agent spraying pipes to move up and down;

[0007] The inlet of the diversion pipe is equipped with a blower and a precipitant pressurization device connected by a reversing valve.

[0008] As an improvement, a gas-liquid splitting pipe is provided between the output port of the reversing valve and the input port of each splitting pipe.

[0009] As an improvement, the outer wall of the agent spraying pipe is provided with several spraying holes.

[0010] As an improvement, the diversion pipe is connected to the support plate via several U-shaped clamps.

[0011] As an improvement, the support plate is an assembled structure, and the output end of the pneumatic telescopic rod is connected to the main support end of the support plate by welding.

[0012] As an improvement, the output ports of the blower and the precipitant pressurizing device are both connected to the input port of the reversing valve via a wire coil.

[0013] The advantages of this invention compared to the prior art are as follows: This device uses multiple agent spraying pipes whose height is controlled by pneumatic telescopic rods to evenly spray the precipitant from the precipitant pressurization device into the waste liquid sedimentation tank. Then, the spraying state of the agent spraying pipes is changed by the reversing valve, so that it sprays out strong air generated by the blower, thereby accelerating the mixing of precipitant and waste liquid near the agent spraying pipes, thereby maximizing the mixing efficiency of the precipitant. Attached Figure Description

[0014] Figure 1 This is a general structural diagram of a waste liquid purification device for electroplating circuit boards according to this utility model.

[0015] Figure 2 This is an exploded view of the precipitant pneumatic mixing component of a waste liquid purification device for electroplated circuit boards according to this utility model.

[0016] Figure 3 This is a structural diagram of the reagent spraying pipe of a waste liquid purification device for electroplating circuit boards according to this utility model.

[0017] Figure 4 This is a cross-sectional view of the precipitant pneumatic mixing component of a waste liquid purification device for electroplated circuit boards according to this utility model.

[0018] As shown in the figure: 1. Waste liquid sedimentation tank; 2. Pneumatic mixing assembly for precipitant; 21. Agent spraying pipe; 211. Spraying hole; 22. Diversion pipe; 23. Support plate; 24. Pneumatic telescopic rod; 25. Reversing valve; 26. Gas-liquid diversion pipe; 3. Blower; 4. Precipitant pressurization device; 5. U-shaped clamp. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] As per the instruction manual Figure 1 , 2 As shown in Figures 3 and 4, the waste liquid sedimentation tank 1 is included. In order to accelerate the mixing of the precipitant and the waste liquid, a precipitant is generally added to the waste liquid sedimentation tank 1. A precipitant pneumatic mixing assembly 2 is provided above the waste liquid sedimentation tank 1. The precipitant pneumatic mixing assembly 2 is supplied with air or liquid by a blower 3 and a precipitant pressurizing device 4 connected through a reversing valve 25. Sufficient precipitant is provided by the precipitant pressurizing device 4, and the mixing of waste liquid and precipitant is accelerated by the blowing of the blower 3.

[0021] The pneumatic mixing assembly 2 for the precipitant includes several agent spraying pipes 21 located above the waste liquid sedimentation tank 1, a diversion pipe 22 connecting each agent spraying pipe 21 via a threaded structure, a support plate 23 for fixing the diversion pipe 22, and several pneumatic telescopic rods 24 for driving the agent spraying pipes 21 to move up and down. The outer wall of the agent spraying pipe 21 is provided with several spray holes 211, through which the precipitant is quickly sprayed onto the wastewater near the agent spraying pipe 21. In order to facilitate the disassembly and installation of the support plate 23 and the diversion pipe 22, the diversion pipe 22 is connected to the support plate 23 via several U-shaped clamps 5.

[0022] Because the waste liquid sedimentation tank 1 is relatively large, it is generally used to connect multiple groups of flow pipes 22 in parallel. Multiple groups of support plates 23 are assembled and merged through the summing plates on both sides of the support plate 23. Then, the output end of the pneumatic telescopic rod 24 is welded to the total support end of the support plate 23 to facilitate the uniform support of the pneumatic telescopic rod 24.

[0023] The inlets of these branch pipes 22 are connected by gas-liquid branch pipes 26 to facilitate the supply of gas and liquid to the blower 3 and the precipitant pressurizing device 4.

[0024] To ensure that the connection between the blower device 3 and the precipitant pressurizing device 4 is not broken when the pneumatic telescopic rod 24 moves up and down, the output ports of the blower device 3 and the precipitant pressurizing device 4 are both connected to the input port of the reversing valve 25 via a wire coil.

[0025] In specific implementation, wastewater is added to the waste liquid sedimentation tank 1, the reversing valve 25 is adjusted to enter the liquid discharge state, the precipitant pressurization device 4 is activated to spray the precipitant liquid through the spray nozzle 211, and then the pneumatic telescopic rod 24 is activated to immerse the agent spray pipe 21 into the waste liquid, so that the precipitant is sprayed evenly in the waste liquid. Then the reversing valve 25 is adjusted to enter the jet spray state, and the air blower 3 accelerates the mixing of the precipitant and the waste liquid. Finally, the pneumatic telescopic rod 24 is raised to remove the agent spray pipe 21 from the waste liquid. In order to avoid the spray nozzle 211 from clogging, the blower 3 can only be closed after the agent spray pipe 21 is completely removed from the waste liquid. Then the waste liquid is left to stand to allow impurities to settle, and then the settled waste liquid is extracted to enter the next process.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A waste solution purification apparatus for electroplating circuit boards, comprising a waste solution settling tank (1), characterized in that: The upper portion of the waste liquid precipitation tank (1) is provided with a precipitant pneumatic mixing assembly (2), which comprises a plurality of medicament spraying pipes (21) located above the waste liquid precipitation tank (1), a shunt pipeline (22) connecting each medicament spraying pipe (21) through a threaded structure, a support plate (23) fixing the shunt pipeline (22), and a plurality of pneumatic telescopic rods (24) driving the upward and downward movement of the medicament spraying pipes (21). The input port of the shunt pipeline (22) is provided with a blowing device (3) and a precipitant pressurizing device (4) connected through a reversing valve (25).

2. The waste solution purifying apparatus for electroplating wiring boards according to claim 1, wherein: The output port of the reversing valve (25) and the input port of each shunt pipeline (22) are provided with a gas-liquid shunt pipeline (26).

3. The waste solution purifying apparatus for electroplating wiring boards according to claim 1, wherein: The outer wall of the medicament spraying pipe (21) is provided with a plurality of spraying holes (211).

4. The waste solution purifying apparatus for electroplating wiring boards according to claim 1, wherein: The shunt pipeline (22) is connected with the support plate (23) through a plurality of U-shaped clamps (5).

5. The waste solution purifying apparatus for electroplating wiring boards according to claim 1, wherein: The support plate (23) is of an assembled structure, and the output end of the pneumatic telescopic rod (24) is connected with the total support end of the support plate (23) through welding.

6. The waste solution purifying apparatus for electroplating wiring boards according to claim 1, wherein: The output port of the blowing device (3) and the output port of the precipitant pressurizing device (4) are connected with the input port of the reversing valve (25) through a wire coil.

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