Medicinal liquid recycling system

Abstract

The utility model belongs to the technical field of circuit board processing discloses a medicine water recycling system, including medicine water jar, primary filter device, secondary filter device and temporary storage jar. Primary filter device communicates with medicine water jar, is used for carrying out primary filter to the medicine water in medicine water jar, secondary filter device communicates with primary filter device, is used for carrying out secondary filter to the medicine water after primary filter device primary filter, the medicine water after secondary filter includes concentrated solution and ultrafiltration water, and concentrated solution returns to medicine water jar through pipeline, temporary storage jar communicates with secondary filter device, and ultrafiltration water enters temporary storage jar through pipeline, and ultrafiltration water is used for washing circuit board, and the ultrafiltration water after washing circuit board returns to medicine water jar through pipeline. The utility model provides medicine water recycling system, can effectively reduce the loss of medicine water amount, and the ultrafiltration water is used for washing circuit board, and it can replace the DI water used for washing existing circuit board, reduces the use cost, and reduces environmental pollution.

Description

Technical Field

[0001] This utility model relates to the field of circuit board processing technology, and in particular to a chemical recycling system. Background Technology

[0002] Printed circuit boards (PCBs) are the core carriers for electrical connections of electronic components and are the cornerstone of the development of the electronic information industry. Among them, wet process PCBs have become key electronic components in consumer electronics, communication equipment, aerospace and other fields due to their extremely high integration, and are most widely used in consumer electronics products such as smartphones, tablets and high-end laptops.

[0003] In the PCB manufacturing process, the hole processing is one of the core links that determines the quality of the product. Holes with different functions on the PCB (such as through holes, blind holes, buried holes, etc.) play a key role in realizing the conduction of circuits between layers and fixing components. Their processing quality directly affects the electrical performance and reliability of the entire circuit board.

[0004] In existing technologies, cleaning operations for PCB board holes typically combine water jet immersion and nozzle cleaning. This involves adjusting the water pressure of an external water source to flush out impurities from the holes, depending on the specific cleaning process. This method usually relies on an externally supplied cleaning solution, resulting in high consumption and cost. The wastewater is discharged through pipes, with some carried over to subsequent processes along with the PCB board. This wastewater generally carries harmful substances, which can impact the environment over time. Furthermore, water carried over to subsequent processes can affect the concentration and conductivity of chemical solutions, thus impacting the final manufacturing results of the PCB.

[0005] Therefore, there is an urgent need for a liquid recycling system to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this invention is to provide a chemical recycling system to solve the problems of high PCB board cleaning costs and environmental pollution caused by wastewater after cleaning, which affect the PCB board manufacturing effect in the prior art. This chemical recycling system can effectively reduce the amount of chemical waste, reduce cleaning costs, and reduce environmental pollution.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] The medicine recycling system includes:

[0009] Medicine tank;

[0010] A primary filtration device is connected to the medicine tank and is used to perform primary filtration of the medicine in the medicine tank.

[0011] A secondary filtration device is connected to the primary filtration device and is used to perform secondary filtration on the medicine solution after primary filtration. The medicine solution after secondary filtration includes a concentrate and ultrafiltered water. The concentrate is returned to the medicine tank through a pipeline.

[0012] The temporary storage tank is connected to the secondary filtration device, and the ultrafiltration water enters the temporary storage tank through a pipe.

[0013] In some possible implementations, the medicine recycling system further includes a conductivity detector for detecting the conductivity of the medicine in the medicine tank.

[0014] In some possible implementations, the medicine recycling system further includes a metering box, which is selectively connected to the temporary storage tank and is used to connect to a water supply device;

[0015] When the conductivity exceeds the threshold, the metering box is connected to the temporary storage tank. The ultrafiltration water in the temporary storage tank enters the metering box and is emptied through the metering box. After emptying, the water supply device injects DI water into the metering box, and the DI water enters the temporary storage tank through the metering box.

[0016] In some possible implementations, the chemical recycling system further includes a wastewater tank connected to the metering box, the wastewater tank being used to receive the ultrafiltration water from the metering box.

[0017] In some possible implementations, the metering box is provided with graduation lines.

[0018] In some possible implementations, the medicine recycling system further includes a control unit, a switch unit is provided between the metering box and the temporary storage tank, the control unit is electrically connected to the conductivity detection unit and the switch unit, and the control unit is able to acquire the conductivity and control the opening and closing of the switch unit according to the conductivity.

[0019] In some possible implementations, the primary filtration device is a cotton core filter, a mesh filter, or a bag filter.

[0020] In some possible implementations, the secondary filtration device is an ultrafiltration device.

[0021] In some possible implementations, the medicine recycling system further includes a pneumatic pump, through which the medicine in the medicine tank is pumped into the primary filtration device, and the medicine after primary filtration by the primary filtration device is pumped into the secondary filtration device by the pneumatic pump.

[0022] The ultrafiltration water is used to clean the circuit board. The ultrafiltration water in the temporary storage tank is pumped into the cleaning nozzle for cleaning the circuit board by the pneumatic pump. After cleaning the circuit board, the ultrafiltration water is pumped back into the chemical tank by the pneumatic pump.

[0023] In some possible implementations, a liquid level sensor is provided inside the temporary storage tank.

[0024] The beneficial effects of this utility model are:

[0025] The chemical recycling system provided by this utility model includes a concentrate and ultrafiltration water after two-stage filtration. The concentrate is returned to the chemical tank through a pipeline for continued use, effectively reducing the amount of chemical waste. The ultrafiltration water can be used to clean circuit boards or other applications. Ultrafiltration water can replace the DI water (deionized water) used for cleaning circuit boards, reducing usage costs and environmental pollution. Attached Figure Description

[0026] Figure 1 This is a flowchart of the medicine recycling system provided in this embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the medicine recycling system provided in this embodiment of the utility model.

[0028] In the picture:

[0029] 100. Medicine tank; 200. Primary filter; 300. Secondary filter; 400. Temporary storage tank; 500. Cleaning nozzle; 600. Metering box. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or 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.

[0032] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] like Figure 1 and Figure 2 As shown, this utility model provides a medicine recycling system, including a medicine tank 100, a primary filtration device 200, a secondary filtration device 300, and a temporary storage tank 400. The primary filtration device 200 is connected to the medicine tank 100 and is used to perform primary filtration of the medicine in the medicine tank 100; the secondary filtration device 300 is connected to the primary filtration device 200 and is used to perform secondary filtration of the medicine after primary filtration by the primary filtration device 200. The medicine after secondary filtration includes a concentrate and ultrafiltered water. The concentrate is returned to the medicine tank 100 through a pipe; the temporary storage tank 400 is connected to the secondary filtration device 300, and the ultrafiltered water enters the temporary storage tank 400 through a pipe.

[0035] The chemical recycling system provided in this embodiment includes a concentrate and ultrafiltration water after two-stage filtration. The concentrate is returned to the chemical tank 100 through a pipeline for continued use, effectively reducing the amount of chemical waste. The ultrafiltration water is used to clean circuit boards or other components. Ultrafiltration water can replace the DI water (deionized water) used for cleaning circuit boards, reducing usage costs and environmental pollution.

[0036] Optionally, the chemical recycling system also includes a conductivity detector to detect the conductivity of the chemical solution in the chemical tank 100. This allows for timely acquisition of changes in the conductivity of the chemical solution, rapid detection of concentration abnormalities, and prevention of uneven coating caused by chemical concentration imbalance.

[0037] Furthermore, the chemical recycling system also includes a metering box 600, which is selectively connected to a temporary storage tank 400 and is used to connect to a water supply device. When the conductivity exceeds a threshold, the metering box 600 connects to the temporary storage tank 400, and the ultrafiltration water in the temporary storage tank 400 enters the metering box 600 and is then emptied. After emptying, the water supply device injects DI water into the metering box 600, and the DI water enters the temporary storage tank 400 through the metering box 600. When the conductivity of the chemical solution becomes abnormal (e.g., increased conductivity), the ultrafiltration water in the temporary storage tank 400 is emptied, and DI water is injected into the metering box 600 through the water supply device. The DI water enters the temporary storage tank 400 through the metering box 600. The DI water after cleaning the circuit board enters the chemical solution tank 100 to calibrate the conductivity of the chemical solution, quickly bringing the conductivity back to a reasonable range.

[0038] Optionally, the chemical recycling system also includes a wastewater tank, which is connected to the metering box 600. The wastewater tank is used to receive the ultrafiltration water in the metering box 600, preventing the ultrafiltration water from being discharged indiscriminately, preventing environmental pollution, and meeting environmental protection requirements.

[0039] Optionally, a scale line is provided inside the metering box 600, through which the volume of liquid (ultrafiltration water, DI water) inside the metering box 600 can be directly observed, and the emptying and injection progress can be clearly monitored.

[0040] The drug recycling system in this embodiment also includes a control component. A switch is installed between the metering box 600 and the temporary storage tank 400. The control component is electrically connected to the conductivity detection component and the switch. The control component can acquire the conductivity and control the opening and closing of the switch based on the conductivity, thereby controlling whether the metering box 600 and the temporary storage tank 400 are connected. This makes the automatic response more timely. The control component receives conductivity data in real time and immediately triggers the switch when the conductivity exceeds the standard, without the need for manual intervention, thus avoiding the continuous impact of abnormal concentration on product quality.

[0041] Optionally, the chemical recycling system also includes a pneumatic pump. The chemical solution in the chemical tank 100 is pumped into the primary filtration device 200 via the pneumatic pump. The chemical solution filtered by the primary filtration device 200 is then pumped into the secondary filtration device 300 via the pneumatic pump. Ultrafiltration water is used to clean the circuit boards. The ultrafiltration water in the temporary storage tank 400 is pumped into the cleaning nozzle 500 used for cleaning the circuit boards via the pneumatic pump. The ultrafiltration water used for cleaning the circuit boards is then pumped back into the chemical tank 100 via the pneumatic pump. The pneumatic pump has a stable output pressure and flexible pressure adjustment, avoiding uneven liquid flow caused by pressure fluctuations.

[0042] Optionally, a liquid level sensor is installed inside the temporary storage tank 400. The liquid level sensor can accurately reflect the liquid level status inside the temporary storage tank 400, obtain liquid level data in real time, and avoid overflow due to excessively high liquid level or dry running of the pneumatic pump due to excessively low liquid level.

[0043] Optionally, the primary filtration device 200 is a cotton core filter. This device precisely intercepts solid impurities, filtering dust, circuit board debris, and other particulate matter from the solution, preventing clogging of pipes, nozzles, or wear on the pump. The cotton core filter includes a cotton core filter element, the core component, made of multiple layers of pressed fiber cotton, which filters impurities through physical interception. Cotton core consumables are inexpensive and easy to replace, requiring no complex tools, thus reducing system maintenance time and costs. The cotton core filter also includes a housing, end caps, and seals, all of which are existing technologies and will not be described in detail here.

[0044] In other possible implementations, the primary filtration device 200 can also be configured as a mesh filtration device or a bag filtration device. A mesh filtration device achieves filtration through physical sieving. The mesh filtration device includes a filter screen, the mesh of which forms sieve openings. Impurities larger than the sieve openings are intercepted, while those smaller pass through with the fluid. The filter screen can be made of metal, such as stainless steel. The mesh filtration device also includes an outer shell, support, and fixing structures, which are existing technologies and will not be described in detail here. A bag filtration device includes a filter bag. The micropores on the surface of the filter bag trap large particles larger than the micropore openings, forming an initial filter membrane. Fine impurities enter the pores inside the filter bag fibers and are trapped through adsorption and bridging, resulting in high filtration accuracy. The filter bag can be made of polymer fibers or metal fibers. A bag filtration device utilizes a combination of deep filtration and surface interception principles, using the porous structure of the filter bag to trap impurities in the fluid. The bag filtration device also includes an outer shell, support, and fixing structures, which are existing technologies and will not be described in detail here.

[0045] Optionally, the secondary filtration device 300 is an ultrafiltration device. Ultrafiltration devices offer high filtration precision, effectively removing colloids, suspended solids, rust, and large organic molecules from the filtration solution without damaging its original components, ensuring the cleanliness of the ultrafiltered water. The ultrafiltered water can be reused for circuit board cleaning, significantly reducing DI water consumption, wastewater discharge, and resource conservation. Ultrafiltration devices have low energy consumption, and the membrane modules are less prone to clogging, enabling long-term stable operation and reducing system operating costs. The ultrafiltration device includes an ultrafiltration membrane module, common types of which include hollow fiber membranes, flat sheet membranes, and spiral wound membranes, with pore sizes ranging from 0.001μm to 0.1μm. Impurities are separated through physical sieving. The ultrafiltration device also includes a membrane housing, inlet and outlet water pipes, and a cleaning system. These components are existing technologies and will not be described in detail here.

[0046] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A medicine recycling system, characterized in that, include: Medicine tank (100); A primary filtration device (200) is connected to the medicine tank (100) and is used to perform primary filtration of the medicine in the medicine tank (100); A secondary filtration device (300) is connected to the primary filtration device (200) and is used to perform secondary filtration on the medicine solution after primary filtration by the primary filtration device (200). The medicine solution after secondary filtration includes a concentrate and ultrafiltration water. The concentrate is returned to the medicine tank (100) through a pipeline. The temporary storage tank (400) is connected to the secondary filtration device (300), and the ultrafiltration water enters the temporary storage tank (400) through a pipe.

2. The medicine recycling system according to claim 1, characterized in that, The medicine recycling system also includes a conductivity detector for detecting the conductivity of the medicine in the medicine tank (100).

3. The medicine recycling system according to claim 2, characterized in that, The medicine recycling system also includes a metering box (600), which is selectively connected to the temporary storage tank (400) and is used to connect to a water supply device; When the conductivity exceeds the threshold, the metering box (600) is connected to the temporary storage tank (400), and the ultrafiltration water in the temporary storage tank (400) enters the metering box (600) and is emptied through the metering box (600). After emptying, the water supply device injects DI water into the metering box (600), and the DI water enters the temporary storage tank (400) through the metering box (600).

4. The medicine recycling system according to claim 3, characterized in that, The chemical recycling system also includes a wastewater tank, which is connected to the metering box (600) and is used to receive the ultrafiltration water in the metering box (600).

5. The medicine recycling system according to claim 4, characterized in that, The quantitative box (600) is equipped with graduation lines.

6. The medicine recycling system according to claim 3, characterized in that, The medicine recycling system also includes a control component. A switch is provided between the metering box (600) and the temporary storage tank (400). The control component is electrically connected to the conductivity detection component and the switch. The control component can acquire the conductivity and control the opening and closing of the switch according to the conductivity.

7. The medicine recycling system according to claim 1, characterized in that, The primary filtration device (200) is a cotton core filtration device, a mesh filtration device, or a bag filtration device.

8. The medicine recycling system according to claim 1, characterized in that, The secondary filtration device (300) is an ultrafiltration device.

9. The medicine recycling system according to claim 1, characterized in that, The medicine recycling system also includes a pneumatic pump. The medicine in the medicine tank (100) is pumped into the primary filter (200) by the pneumatic pump. The medicine filtered by the primary filter (200) is then pumped into the secondary filter (300) by the pneumatic pump. The ultrafiltration water is used to clean the circuit board. The ultrafiltration water in the temporary storage tank (400) is pumped into the cleaning nozzle (500) for cleaning the circuit board by the pneumatic pump. After cleaning the circuit board, the ultrafiltration water is pumped back into the chemical tank (100) by the pneumatic pump.

10. The medicine recycling system according to claim 1, characterized in that, A liquid level sensor is installed inside the temporary storage cylinder (400).

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