CN201971894U - A PCB board sinking copper wire micro-etching potion recycling device - Google Patents

Abstract

The utility model discloses a micro-etching liquid medicine recycling device for a copper-deposited wire of a PCB (printed circuit board), wherein an electrolytic tank (2) of the device comprises a square water tank and a cathode plate and an anode plate which are arranged above the water tank, wherein the titanium plate is an anode plate, and the copper plate is a cathode plate; the anode of the rectifier (3) is connected with the titanium plate through a lead, and the cathode of the rectifier (3) is connected with the copper plate through a lead; the controller (5) comprises a hydrogen peroxide potential sensor (11), a signal amplifier (12), a regulator (13), a frequency converter (14) and a water pump (15) which are connected in sequence; the hydrogen peroxide potential sensor (11) is arranged in the automatic dosing groove (6), and the water pump (15) is respectively connected with the micro-etching liquid medicine container (16) and the automatic dosing groove (6). Use this novel can effectively be with declining water cycle reuse, turn into it into simple substance copper and retrieve the free state copper ion in the waste water through the mode of electrolysis simultaneously, effectively reduced metal pollution, reduce manufacturing cost.

Description

A PCB board sinking copper wire micro-etching potion recycling device

technical field

The utility model relates to sewage treatment equipment, in particular to a PCB board sinking copper wire micro-etching potion circulation regeneration device; it is a special treatment device for waste water containing a large amount of copper ions and copper ammonia complexes in the PCB board copper sinking process.

Background technique

During the manufacturing process of PCB boards, the substrate needs to be copper-precipitated. During the copper-precipitation process, a large amount of wastewater containing a large amount of copper ions and copper ammonia complexes will be generated, and the wastewater will be directly discharged to the sewage collection tank. The traditional method not only removes copper ions in the solution, but also neutralizes the micro-etching potion in the solution, resulting in waste of water resources and low utilization rate of the potion.

Utility model content

The purpose of the utility model is to provide a PCB sinking copper wire micro-etching potion recycling device to solve the problems of low utilization rate of water resources and potion and low efficiency of sewage treatment in the production process.

In order to achieve the above object, the utility model mainly adopts the following technical solutions:

A PCB board sinking copper wire micro-etching solution circulation regeneration device, including a water inlet pipe, a water storage tank, an electrolytic tank, a rectifier, a controller, an automatic dosing tank, a water outlet and a water pipe; the water inlet pipe is connected to the water storage tank, and the water storage tank passes through the water pipe It is connected with the electrolytic tank, the electrolytic tank is located under the outside of the water storage tank, the automatic dosing tank is located under the water storage tank, the electrolytic tank is connected with the automatic dosing tank through water pipes, and the automatic dosing tank is provided with a water outlet; the electrolytic tank includes a square water tank and a The cathode and anode plates above the sink, where the titanium plate is the anode plate and the copper plate is the cathode plate; the positive pole of the rectifier is connected to the titanium plate through a lead wire, and the negative pole of the rectifier is connected to the copper plate through a lead wire; the controller includes a hydrogen peroxide potential sensor and a signal amplifier connected in sequence , a regulator, a frequency converter and a water pump; the hydrogen peroxide potential sensor is set in the automatic dosing tank, and the water pump is respectively connected with the micro-erosion liquid medicine container and the automatic dosing tank.

In order to further realize the purpose of the utility model, the water tank is preferably a square water tank.

The automatic dosing tank is preferably a square tank.

The signal amplifier, regulator and frequency converter of the controller are preferably arranged on the side wall of the water storage tank.

The beneficial effects of the utility model are as follows: the utility model aims at the characteristics that the sewage in the copper sinking process contains a large amount of copper ions and copper ammonia complexes, and adopts the electrolysis method of the titanium anode to ensure that the copper ions will be removed without generating new electrolytes. Pollution, and the tank pressure is relatively low during electrolysis, which is more energy-saving and power-saving; the controller of the utility model can realize the recycling of the micro-etching potion through the automatic dosing control of the sewage after electrolysis, effectively save water resources and recover copper ions and reduce production cost.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the rectifier of the present invention.

Fig. 3 is a structural schematic diagram of the controller of the present invention.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and embodiments, but the protection scope of the utility model is not limited to the range expressed in the embodiments.

As shown in Figure 1, a PCB board sinking copper wire micro-etching liquid recycling device, including water inlet pipe 1, water storage tank 2, electrolytic tank 3, rectifier 4, controller 5, automatic dosing tank 6, water outlet and water pipes 8; The water inlet pipe 1 is connected to the water storage tank 2, the water storage tank 2 is connected to the electrolytic cell 3 through the water pipe 8, the electrolytic cell 3 is located below the outer side of the water storage tank 2, the automatic dosing tank 6 is located under the water storage tank 2, and the electrolytic cell 3 passes through the water pipe 8 Connect with automatic dosing tank 6, automatic dosing tank 6 is provided with water outlet 7; Electrolyzer 2 comprises square water tank and places the cathode and anode plate above water tank, and water tank is preferably square water tank, and wherein titanium plate is anode plate, and copper plate is Cathode plate; as shown in FIG. 2 , the rectifier 4 is composed of an AC-DC conversion circuit, through AC transformation, and a stable 5v DC voltage output through a rectifier bridge. The positive pole of the rectifier 3 is connected to the titanium plate through a lead wire, and the negative pole of the rectifier 3 is connected to the copper plate through a lead wire. The electrolysis method of titanium anode is used to ensure that copper ions are removed without new pollution to the electrolyte. As shown in Figure 3, the controller includes a hydrogen peroxide potential sensor 11, a signal amplifier 12, a regulator 13, a frequency converter 14, and a water pump 15 connected in sequence; the hydrogen peroxide potential sensor 11 is arranged in the automatic dosing tank 6 to detect the 6. Concentration of the micro-erosion potion (made up of sulfuric acid and hydrogen peroxide) after electrolysis; the water pump 15 is connected with the micro-etch potion container 16 and the automatic dosing tank 6 respectively, and the micro-etch potion in the micro-etch potion container 16 is pumped into the automatic dosing In the tank 6, the specific process is that the hydrogen peroxide potential sensor 11 detects the concentration of the micro-etching potion in the automatic dosing tank 6, and the concentration information is input to the regulator 13 through the signal amplifier 12, and compared with the set value in the regulator 13, Obtaining the deviation signal, the regulator 13 performs proportional and integral calculations on the deviation signal according to the process requirements, and the signal of the calculation result is sent to the frequency converter 14, and the frequency converter 14 changes the frequency of the working power supply of the motor of the water pump 15 according to the adjustment signal output by the regulator 13, so that The speed of the water pump motor changes, changing the dose of the injected liquid medicine, so that the concentration of the liquid medicine is controlled within the process range. The automatic dosing tank 6 is preferably a square tank. The signal amplifier 12 , regulator 13 and frequency converter 14 of the controller 5 are preferably arranged on the side wall of the water storage tank 2 .

When in use, the sewage from the production line enters the water storage tank 2 from the water inlet pipe 1, and the water storage tank 2 pumps water into the electrolytic tank 3, and the rectifier 4 generates a stable DC voltage through the transformer transformation and AC-DC conversion, and removes it through the electrolysis process of titanium anodes Copper ions in the sewage allow water to be put into the automatic dosing tank 6 for automatic dosing. During automatic dosing, at first by hydrogen peroxide potential sensor 11, detect whether the concentration of the micro-erosion medicine in the automatic dosing tank 6 is within the scope of the working concentration (1.5-2%), and the concentration information is input to the regulator 13 through the signal amplifier 12 and The set value is compared to obtain the deviation signal, and the regulator performs proportional and integral calculations on the deviation signal according to the process requirements, and the calculation result signal is sent to the frequency converter 14, and the frequency converter changes the frequency of the working power supply of the water pump motor according to the adjustment signal output by the regulator. The rotation speed of the water pump motor is changed. When the weight concentration of the micro-etching liquid is lower than 1.5%, the controller 5 makes the water pump 15 extract the liquid to realize dosing. When the weight concentration of the micro-etching liquid is higher than 2%, the controller 5 makes the water pump 15 shut off. open, stop dosing, and return the water to the production line. The controller controls the concentration of the liquid medicine within the process range by changing the dose of the injected liquid medicine.

Claims (4)

1. A PCB plate sinking copper wire micro-etching potion circulation regeneration device, including water inlet pipe (1), water storage tank (2), electrolytic tank (3), rectifier (4), controller (5), automatic dosing tank (6), water outlet (7) and water pipe (8); Water inlet pipe (1) is connected with water storage tank (2), and water storage tank (2) is connected with electrolytic cell (3) by water pipe (8), and electrolytic cell (3) ) is located below the outer side of the water storage tank (2), the automatic dosing tank (6) is located below the water storage tank (2), the electrolytic cell (3) is connected with the automatic dosing tank (6) through the water pipe (8), and the automatic dosing tank ( 6) A water outlet (7) is provided; the electrolytic cell (2) includes a square water tank and an anode and cathode plate placed above the water tank, wherein the titanium plate is the anode plate, and the copper plate is the cathode plate; the positive electrode of the rectifier (3) is connected to the titanium plate through the lead wire board connection, the negative pole of the rectifier (3) is connected to the copper plate through a lead wire; the controller (5) includes a hydrogen peroxide potential sensor (11), a signal amplifier (12), a regulator (13), a frequency converter (14) and a water pump connected in sequence (15); the hydrogen peroxide potential sensor (11) is arranged in the automatic dosing tank (6), and the water pump (15) is connected with the micro-erosion liquid medicine container (16) and the automatic dosing tank (6) respectively. 2. The device for circulating and regenerating liquid for micro-erosion of PCB board sinking copper wire according to claim 1, characterized in that: the water tank is a square water tank. 3. The PCB board copper wire micro-etching liquid recycling device according to claim 1, characterized in that: the automatic dosing tank is a square tank. 4. The PCB board copper wire micro-erosion solution recycling device according to claim 1, characterized in that: the signal amplifier, regulator and frequency converter of the controller are arranged on the side wall of the water storage tank.

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