Device and system for automatically analyzing and adding antioxidant process liquid medicine

Abstract

The embodiment of the utility model provides an anti-oxidation process liquid medicine automatic analysis and addition device and system, and the device comprises a multi-channel electromagnetic valve group, a first electromagnetic valve, an analysis sampling pump, a spectrophotometric sensor, an online refractive index sensor and a second electromagnetic valve which are communicated in sequence. A first channel of the multi-channel electromagnetic valve group is communicated with the pure water, a second channel of the multi-channel electromagnetic valve group is communicated with the standard solution, and a third channel of the multi-channel electromagnetic valve group is communicated with the anti-oxidation process liquid medicine. The first electromagnetic valve is further communicated with first wastewater, the analysis sampling pump is used for sequentially pumping pure water, a standard solution and an anti-oxidation process liquid medicine to the spectrophotometric sensor and the online refractive index sensor, and the second electromagnetic valve is further communicated with second wastewater. The spectrophotometric sensor is used for determining the concentration of active components in the antioxidant process liquid medicine according to the pure water and the standard solution. The on-line refractive index sensor is used for determining the solid content of the scaling powder in the anti-oxidation process liquid medicine according to the pure water and the standard solution.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of process solution analysis, and specifically to an automatic analysis and addition device and system for antioxidant process solutions. Background Art

[0002] The anti-oxidation process is a process widely used in copper foil surface treatment. It applies an anti-oxidation solution containing organic matter on the surface of the PCB to form a protective film to protect the copper surface from rusting in a normal environment.

[0003] The concentration of active components in the antioxidant process solution can lead to film defects, affecting the solderability and heat resistance of the PCB. The solids content of the flux in the antioxidant process solution can be used to measure the quality and efficiency of subsequent soldering. Therefore, it is necessary to monitor and analyze the concentration of active components and the solids content of the flux in the antioxidant process solution.

[0004] Currently, analysis of the concentration of active ingredients and solids content of flux in antioxidant process solutions primarily relies on manual sampling by laboratory technicians on the production line, followed by the addition of appropriate reagents based on the analysis results. However, production lines generate high levels of acidic gases, manual sampling poses a health risk, and numerous human factors can lead to significant errors in the analysis results. Utility Model Content

[0005] In view of the above problems, the embodiments of the present application provide an automatic analysis and addition device and system for antioxidant process liquids, which overcomes or at least partially solves the above problems that manual sampling is harmful to human health and the analysis results have large errors.

[0006] In a first aspect of an embodiment of the present application, a device for automatically analyzing and adding antioxidant process chemicals is provided, comprising: a multi-channel solenoid valve assembly, a first solenoid valve, an analytical sampling pump, a spectrophotometric sensor, an online refractive index sensor, and a second solenoid valve. The multi-channel solenoid valve assembly, the first solenoid valve, the analytical sampling pump, the spectrophotometric sensor, the online refractive index sensor, and the second solenoid valve are sequentially connected.

[0007] The first channel of the multi-channel solenoid valve assembly is connected to pure water, the second channel is connected to a standard solution, and the third channel is connected to an antioxidant process solution. The first solenoid valve also connects to the first wastewater stream. An analytical sampling pump sequentially pumps pure water, a standard solution, and the antioxidant process solution to a spectrophotometric sensor and an online refractive index sensor. The second solenoid valve also connects to the second wastewater stream. The spectrophotometric sensor determines the concentration of active ingredients in the antioxidant process solution based on the pure water and standard solution. The online refractive index sensor determines the solids content of the flux in the antioxidant process solution based on the pure water and standard solution.

[0008] In this embodiment, the analytical sampling pump can sequentially draw pure water, standard solution, and antioxidant process solution from the multi-channel solenoid valve assembly via the first solenoid valve to the spectrophotometric sensor and online refractive index sensor. The spectrophotometric sensor and online refractive index sensor can be calibrated based on pure water and standard solution. When the antioxidant process solution flows into the calibrated spectrophotometric sensor, the spectrophotometric sensor can determine the concentration of the active component in the antioxidant process solution. When the antioxidant process solution flows into the calibrated online refractive index sensor, the online refractive index sensor can determine the solid content of the flux in the antioxidant process solution. Furthermore, by controlling the first and second solenoid valves and the analytical sampling pump, the drawn pure water, standard solution, and antioxidant process solution can be discharged in preparation for the next analysis.

[0009] In an optional embodiment, the first solenoid valve is a two-position three-way solenoid valve, the first end of the first solenoid valve is connected to the first wastewater, the second end of the first solenoid valve is connected to the analysis sampling pump, and the third end of the first solenoid valve is connected to the multi-channel solenoid valve group.

[0010] In an optional embodiment, the device further includes a pH electrode, the inlet of the pH electrode is connected to the spectrophotometric sensor, and the outlet of the pH electrode is connected to the online refractive index sensor.

[0011] In this embodiment, by providing a pH electrode, the automatic antioxidant process solution analysis and addition device can determine the pH value of the antioxidant process solution, preventing the pH from decreasing, which could lead to a decrease in film formation speed or even failure of film formation. It also prevents excessively high pH values ​​from causing the antioxidant process solution to become turbid, or even causing oily precipitation and crystallization, resulting in an uneven film layer.

[0012] In an optional manner, the outlet of the pH electrode is higher than the inlet of the pH electrode in the direction of gravity.

[0013] By setting the outlet of the pH electrode higher than the inlet of the pH electrode in the gravity direction, the antioxidant process solution remaining below the flow groove of the pH electrode can be completely drained when the antioxidant process solution in the device needs to be discharged later.

[0014] In an optional manner, the multi-channel solenoid valve group further includes a fourth channel, and the fourth channel is connected to the cleaning agent.

[0015] By connecting the fourth channel with the cleaning agent, the standard solution and the antioxidant process solution solidified in the antioxidant process solution automatic analysis and addition device can be better removed.

[0016] In an optional manner, the spectrophotometric sensor includes a first light source, a semi-transparent and semi-reflective mirror, a plane mirror, a first sample flow inlet, a first sample flow outlet, a sample cell, a first photoelectric signal converter, a second photoelectric signal converter, and a signal output interface. The first light source is irradiated onto the semi-transparent and semi-reflective mirror, and a first portion of the light from the first light source is reflected onto the plane mirror and transmitted to the second photoelectric signal converter via the plane mirror. The second portion of the light from the first light source is transmitted to the sample cell by the semi-transparent and semi-reflective mirror and reaches the first photoelectric signal converter via the sample cell. The first photoelectric signal converter and the second photoelectric signal converter are both connected to the signal output interface, the first sample flow inlet is the entrance of the sample cell, and the first sample flow outlet is the outlet of the sample cell.

[0017] In one optional embodiment, the online refractive index sensor includes: a second light source, an interference filter, an off-axis parabolic reflector, a prism, a test bench, a signal receiver, a second sample flow inlet, and a second sample flow outlet. Light emitted by the second light source passes through the interference filter to the off-axis parabolic reflector, which reflects the light to the interface between the prism and the test bench, and then through the interface to the signal receiver. Antioxidant process solution flows into the second sample flow inlet, passes through the test bench, and exits the second sample flow outlet. The prism is located below the test bench in the direction of gravity.

[0018] In one optional embodiment, the device further includes an analysis and display module and a reagent storage module. The spectrophotometer sensor, online refractive index sensor, and pH electrode are all connected to the analysis and display module. The analysis and display module is configured to collect, process, store, and display data output by the spectrophotometer sensor, online refractive index sensor, and pH electrode. The reagent storage module is configured to store pure water, standard solution, first wastewater, second wastewater, and cleaning agent.

[0019] A second aspect of the present invention provides an automatic analysis and addition system for antioxidant process chemicals, comprising a dosing device and the automatic analysis and addition device for antioxidant process chemicals provided in the first aspect of the present invention. The automatic analysis and addition device for antioxidant process chemicals is connected to the dosing device, and both the dosing device and the automatic analysis and addition device for antioxidant process chemicals are connected to an antioxidant process chemical tank.

[0020] In this embodiment, the concentration of the active component in the antioxidant process solution and the solid content of the flux in the antioxidant process solution analyzed by the automatic analysis and addition device for the antioxidant process solution can be transmitted to the dosing device, and the dosing device can perform a dosing operation based on the analyzed concentration of the active component in the antioxidant process solution and the solid content of the flux in the antioxidant process solution so that the concentration of the active component in the antioxidant process solution and the solid content of the flux in the antioxidant process solution are maintained within an appropriate range.

[0021] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to more clearly understand the technical means of the embodiments of the present application, they can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 A schematic structural diagram of an automatic analysis and addition device for antioxidant process liquids provided in some embodiments of the present application.

[0024] Figure 2 A schematic structural diagram of a spectrophotometric sensor provided in some embodiments of the present application.

[0025] Figure 3 This is a working curve diagram of absorbance and concentration provided in the examples of this application.

[0026] Figure 4 A schematic structural diagram of an online refractive index sensor provided in some embodiments of the present application.

[0027] Figure 5 The working curve diagram of the refractive index signal and solid content provided in the embodiment of the present application.

[0028] Figure 6 Another automatic analysis and addition device for antioxidant process liquids is provided in some embodiments of the present application.

[0029] Figure 7 A schematic structural diagram of an automatic analysis and addition system for antioxidant process liquids provided in some embodiments of the present application. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0032] The terms "comprises", "comprising" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the presence of a plurality.

[0033] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] In addition, the terms "first", "second", etc. in the description and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more such features.

[0035] In the description of this application, unless otherwise specified, "plurality" means more than two (including two), and similarly, "multiple groups" means more than two (including two).

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, "connected" or "connected" in a mechanical structure can refer to a physical connection. For example, a physical connection can be a fixed connection, such as a fixed connection via a fixing member, such as a screw, bolt, or other fixing member. A physical connection can also be a detachable connection, such as a mutual snap-fit ​​connection. A physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. "Connected" or "connected" in a circuit structure can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate element, as long as the circuit is interconnected. It can also refer to internal communication between two elements. A signal connection can refer to a signal connection through a circuit or a signal connection through a media medium, such as radio waves. Those skilled in the art will understand the specific meanings of the above terms in this application.

[0037] Figure 1This is a schematic diagram of the structure of an automatic analysis and addition device for antioxidant process liquid medicine provided in some embodiments of the present application. Figure 1 The automatic analysis and addition device for antioxidant process liquid can include: a multi-channel solenoid valve group 01, a first solenoid valve 02, an analysis sampling pump 03, a spectrophotometric sensor 04, an online refractive index sensor 05, and a second solenoid valve 06. The multi-channel solenoid valve group 01, the first solenoid valve 02, the analysis sampling pump 03, the spectrophotometric sensor 04, the online refractive index sensor 05, and the second solenoid valve 06 are connected in sequence.

[0038] The first channel 011 of the multi-channel solenoid valve group 01 is connected to pure water, and the second channel 012 of the multi-channel solenoid valve group 01 is connected to the standard solution.

[0039] It should be noted that, in the antioxidant process solution at 35-40 degrees Celsius (°C), the concentration of the active component in the antioxidant process solution can be defined as 100% according to actual needs. At this concentration, when some of the pure water in the antioxidant process solution evaporates, the concentration of the active component will exceed 100%. At this concentration, when pure water is added to the antioxidant process solution, the concentration of the active component will be lower than 100%. In this embodiment, the concentration of the active component in the antioxidant process solution is maintained at 90-110%. Among them, the active component in the antioxidant process solution refers to the main film-forming substance, imidazole compounds, which can form coordination bonds with copper atoms to form stable complexes, thereby forming an organic copper coordination polymer film on the bare copper surface.

[0040] It should be noted that, in this embodiment, the solid content of the flux in the antioxidant process solution can be maintained at 7-10%.

[0041] It is worth noting that a standard solution refers to an antioxidant process solution with an active ingredient concentration of 90-110% and a flux solids content of 7-10%. For example, a standard solution could be an antioxidant process solution with an active ingredient concentration of 100% and a flux solids content of 9%.

[0042] The third channel 013 of the multi-channel solenoid valve assembly 01 is connected to the antioxidant process solution. The first solenoid valve 02 is also connected to the first wastewater. The analytical sampling pump 03 is used to sequentially pump pure water, a standard solution, and the antioxidant process solution to the spectrophotometric sensor 04 and the online refractive index sensor 05. The second solenoid valve 06 is also connected to the second wastewater. The spectrophotometric sensor 04 is used to determine the concentration of the active component in the antioxidant process solution based on the pure water and the standard solution. The online refractive index sensor 05 is used to determine the solid content of the flux in the antioxidant process solution based on the pure water and the standard solution.

[0043] In this embodiment, the analytical sampling pump 03 sequentially draws pure water, a standard solution, and an antioxidant process solution from the multi-channel solenoid valve assembly 01 via the first solenoid valve 02 to the spectrophotometer sensor 04 and the online refractive index sensor 05. The spectrophotometer sensor 04 and the online refractive index sensor 05 are calibrated based on pure water and the standard solution. When the antioxidant process solution flows into the calibrated spectrophotometer sensor 04, the spectrophotometer sensor 04 can determine the concentration of the active component within the antioxidant process solution. When the antioxidant process solution flows into the calibrated online refractive index sensor 05, the online refractive index sensor 05 can determine the solids content of the soldering flux within the antioxidant process solution. The drawn pure water, standard solution, and antioxidant process solution are then discharged by controlling the first solenoid valve 02, the second solenoid valve 06, and the analytical sampling pump 03 to prepare for the next analysis.

[0044] In some embodiments, reference Figure 1 The first solenoid valve 02 is a two-position three-way solenoid valve. The first end 021 of the first solenoid valve 02 is connected to the first wastewater, the second end 022 of the first solenoid valve 02 is connected to the analysis sampling pump 03, and the third end 023 of the first solenoid valve 02 is connected to the multi-channel solenoid valve group 01.

[0045] In some embodiments, reference Figure 1 The automatic analysis and addition device for antioxidant process liquid can also include a pH electrode 07 , the inlet of the pH electrode 07 is connected to the spectrophotometric sensor 04 , and the outlet of the pH electrode 07 is connected to the online refractive index sensor 05 .

[0046] In this embodiment, by providing a pH electrode 07, the automatic antioxidant process solution analysis and addition device can determine the pH value of the antioxidant process solution, preventing the pH from decreasing, which could lead to a decrease in film formation speed or even failure of film formation. It also prevents excessively high pH values ​​from causing the antioxidant process solution to become turbid, or even causing oily precipitation and crystallization, resulting in an uneven film layer.

[0047] In some embodiments, the outlet of the pH electrode 07 is higher than the inlet of the pH electrode 07 in the direction of gravity.

[0048] By setting the outlet of the pH electrode 07 higher than the inlet of the pH electrode 07 in the gravity direction, the antioxidant process solution remaining below the flow channel of the pH electrode 07 can be completely discharged when the antioxidant process solution in the device needs to be discharged later.

[0049] In some embodiments, the multi-channel solenoid valve assembly 01 may further include a fourth channel 014 , which is connected to the cleaning agent.

[0050] By connecting the fourth channel 014 to the cleaning agent, the standard solution and the antioxidant process solution solidified in the antioxidant process solution automatic analysis and addition device can be better removed.

[0051] It should be noted that the multi-channel solenoid valve group 01 may further include a fifth channel 015 and a sixth channel 016 . The fifth channel 015 may be connected to the first pH calibration buffer solution, and the sixth channel 016 may be connected to the second pH calibration buffer solution.

[0052] Figure 2 This is a schematic diagram of the structure of a spectrophotometric sensor provided in some embodiments of the present application. Figure 2 The spectrophotometric sensor may include a first light source 21, a semi-transparent and semi-reflective mirror 22, a plane mirror 23, a first sample flow inlet 24, a first sample flow outlet 25, a sample pool 26, a first photoelectric signal converter 27, a second photoelectric signal converter 28 and a signal output interface 29.

[0053] The first light source 21 irradiates the semi-transparent mirror 22 , and a first portion of light from the first light source 21 is reflected to the plane mirror 23 and then transmitted to the second photoelectric signal converter 28 via the plane mirror 23 .

[0054] The second portion of light from the first light source 21 is transmitted to the sample cell 26 by the semi-transparent and semi-reflective mirror 22 , and reaches the first photoelectric signal converter 27 through the sample cell.

[0055] The first photoelectric signal converter 27 and the second photoelectric signal converter 28 are both connected to the signal output interface 29 . The first sample flow inlet 24 is the inlet of the sample pool 26 , and the first sample flow outlet 25 is the outlet of the sample pool 26 .

[0056] According to Lambert-Beer law, the following formula can be determined:

[0057]

[0058] Where I0 is the incident light intensity of the first light source, Itestliquid is the intensity of the light emitted by the first light source through the test liquid. The concentration of the test liquid in sample cell 26 is C, and the width of sample cell 26 is B. A is the absorbance of the test solution, and k is the molar absorptivity of the test solution. V1 is the signal output by the first photoelectric signal converter 27, and V2 is the signal output by the second photoelectric signal converter 28.

[0059] Figure 3 This is a working curve diagram of absorbance and concentration provided in the examples of this application. Figure 3 , from the above formula we can know Or there is a linear relationship between A and the concentration of the liquid to be tested. By passing pure water and the standard solution through the sample cell 26 in sequence, the absorbance corresponding to the pure water and the standard solution can be determined. Since the concentrations of the pure water and the standard solution are known, the spectrophotometric sensor 04 can be calibrated to the zero point using pure water and the second point using the standard solution. The linear relationship between absorbance and concentration is determined by the calibrated zero point and the second point. In this way, when the solution to be tested flows into the sample cell 26, the absorbance of the liquid to be tested can be determined based on the signal output by the first photoelectric signal converter 27 and the signal output by the second photoelectric signal converter 28. Furthermore, the concentration of the liquid to be tested can be determined based on the linear relationship between absorbance and concentration. In this way, the spectrophotometric sensor 04 can determine the concentration of the active component in the antioxidant process solution.

[0060] Figure 4 This is a schematic diagram of the structure of an online refractive index sensor provided in some embodiments of the present application. Figure 4 Online refractive index sensor 05 includes: a second light source 051, an interference filter 052, an off-axis parabolic reflector 053, a prism 054, a test bench 055, a signal receiver 056, a second sample flow inlet 057, and a second sample flow outlet 058. Light emitted by second light source 051 passes through interference filter 052 to off-axis parabolic reflector 053. Off-axis parabolic reflector 053 reflects the light to the interface between prism 054 and test bench 055, and then through the interface to signal receiver 056. Antioxidant process solution flows into second sample flow inlet 057, passes through test bench 055, and exits through second sample flow outlet 058. Prism 054 is located below test bench 055 in the direction of gravity.

[0061] After light from second light source 051 reaches the interface between prism 054 and test table 055, signal receiver 056 precisely detects the position of the reflected light after reflection from prism 054. Each position corresponds to the refractive index of the liquid under test. Because there is a good linear relationship between the refractive index and solids content of the liquid under test, online refractive index sensor 05 can determine the solids content of the flux in the antioxidant process solution.

[0062] Specifically, since the solids content of pure water and the standard solution is known, the pure water and the standard solution are passed through the online refractive index sensor 05. The online refractive index sensor 05 can output refractive index signals corresponding to the pure water and the standard solution, respectively, via the signal receiver 056. In this way, the online refractive index sensor 05 can be calibrated at the zero point using pure water and the second point using the standard solution. The linear relationship between the refractive index signal and the solids content is determined using the calibrated zero and second points. Figure 5 The working curve of the refractive index signal and solid content provided in the embodiment of the present application is as follows. Figure 5When the solution to be tested flows into the online refractive index sensor 05, the solid content of the liquid to be tested can be determined based on the output refractive index signal and the linear relationship between the refractive index signal and the solid content.

[0063] The following describes the working process of an automatic analysis and addition device for antioxidant process liquid provided in an embodiment of the present application.

[0064] First, a two-point calibration of the spectrophotometric sensor 04 and the online refractive index sensor 05 is performed.

[0065] The analytical sampling pump 03 works in the forward direction (as indicated by the arrow), opens the first channel 011 of the multi-channel electromagnetic valve group 01 to extract pure water, and opens the second electromagnetic valve 06 to rinse the pipeline. The second electromagnetic valve 06 is a two-position two-way electromagnetic valve.

[0066] After rinsing for a certain period of time, the analytical sampling pump 03 stops, the second solenoid valve 06 is closed, and stays for a certain period of time to read the signals of the spectrophotometer sensor 04 and the online refractive index sensor 05, and calibrate the zero point of the spectrophotometer sensor 04 and the zero point of the online refractive index sensor 05.

[0067] After the rinsing is completed, the analysis sampling pump 03 is reversed (in the opposite direction as indicated by the arrow) and started to connect the first end 021 and the second end 022 of the first solenoid valve 02, and discharge the pure water into the first wastewater.

[0068] The analysis sampling pump 03 continues to work in the forward direction, opens the second channel 012 of the multi-channel electromagnetic valve group 01 to extract the standard solution, and opens the second electromagnetic valve 06 to rinse the pipeline.

[0069] After rinsing for a certain period of time, the analytical sampling pump 03 stops, the second solenoid valve 06 is closed, and stays for a certain period of time, and the signals of the spectrophotometer sensor 04 and the online refractive index sensor 05 are read again to calibrate the second point of the spectrophotometer sensor 04 and the second point of the online refractive index sensor 05.

[0070] After the rinsing is completed, the analysis sampling pump 03 is reversed and started to connect the first end 021 and the second end 022 of the first solenoid valve 02 to discharge the standard solution into the first wastewater.

[0071] Continue with the two-point calibration of pH electrode 07.

[0072] The analytical sampling pump 03 works in the forward direction, opens the fifth channel 015 of the multi-channel electromagnetic valve group 01 to extract the first pH calibration buffer solution, and opens the second electromagnetic valve 06 to rinse the pipeline.

[0073] After rinsing for a certain period of time, the analytical sampling pump 03 is stopped, the second electromagnetic valve 06 is closed, and the state is maintained for a certain period of time, and the calibration signal of the pH electrode 07 is read.

[0074] The analytical sampling pump 03 is reversed and started to connect the first end 021 and the second end 022 of the first electromagnetic valve 02 , and discharge the first pH calibration buffer solution into the first wastewater.

[0075] The analytical sampling pump 03 works in the forward direction, opens the sixth channel 016 of the multi-channel electromagnetic valve group 01 to extract the second pH calibration buffer solution, and opens the second electromagnetic valve 06 to rinse the pipeline.

[0076] After rinsing for a certain period of time, the analytical sampling pump 03 is stopped, the second electromagnetic valve 06 is closed, and after a certain period of time, the calibration signal of the pH electrode 07 is read again.

[0077] The analytical sampling pump 03 is reversed and started to connect the first end 021 and the second end 022 of the first electromagnetic valve 02, and discharge the second pH calibration buffer solution into the first wastewater.

[0078] Finally, we enter the analysis process.

[0079] The analysis sampling pump 03 works in the forward direction, opens the third channel 013 of the multi-channel electromagnetic valve group 01 to extract the antioxidant process solution, and opens the second electromagnetic valve 06 to rinse the pipeline.

[0080] After rinsing is completed and the pipeline is filled with the antioxidant process solution without any bubbles or other influences, the analysis sampling pump 03 is stopped and the second solenoid valve 06 is closed. After a certain period of time, the signals of the spectrophotometer sensor 04, the pH electrode 07 and the online refractive index sensor 05 are read to determine the concentration of the active component in the antioxidant process solution, the pH value of the antioxidant process solution and the solid content of the flux in the antioxidant process solution.

[0081] The analysis sampling pump 03 is reversed and started to connect the first end 021 and the second end 022 of the first electromagnetic valve 02, and discharge the antioxidant process liquid into the first wastewater.

[0082] The fourth channel 014 of the multi-channel electromagnetic valve group 01 is opened to extract the cleaning agent for cleaning, and the second electromagnetic valve 06 is opened to discharge the cleaning agent into the second wastewater, completing one cleaning.

[0083] Open the first channel 011 of the multi-channel electromagnetic valve group 01 to extract pure water for cleaning, and open the second electromagnetic valve 06 to discharge the pure water into the second wastewater, completing one cleaning.

[0084] The multi-channel solenoid valve group 01 may further include a seventh channel 017 and an eighth channel 018 . The seventh channel 017 and the eighth channel 018 may both be connected to different antioxidant process solution tanks.

[0085] By repeating the above working process, the automatic analysis and addition device for antioxidant process solution provided in the embodiment of the present application can simultaneously measure the concentration of active components in the antioxidant process solution in different antioxidant process solution tanks, the solid content of the flux, and the pH value.

[0086] Figure 6 Another automatic analysis and addition device for antioxidant process liquid medicine provided in some embodiments of the present application is provided. Figure 6 The device may also include an analysis and display module 08 and a reagent storage module 09. The spectrophotometer sensor 04, the online refractive index sensor 05, and the pH electrode 07 are all connected to the analysis and display module 08. The analysis and display module 08 is used to collect, process, store, and display data output by the spectrophotometer sensor 04, the online refractive index sensor 05, and the pH electrode 07. The reagent storage module 09 is used to store pure water, standard solution, first wastewater, second wastewater, and cleaning agent.

[0087] Another embodiment of the present application also provides an automatic analysis and addition system for antioxidant process liquids. Figure 7 This is a schematic diagram of the structure of an automatic analysis and addition system for antioxidant process liquid medicine provided in some embodiments of the present application. Figure 7 The automatic analysis and addition system for antioxidant process solution can also include a dosing device 71 and the automatic analysis and addition device for antioxidant process solution provided in the previous embodiments of this application. The automatic analysis and addition device for antioxidant process solution is connected to the dosing device 71, and both the dosing device 71 and the automatic analysis and addition device for antioxidant process solution are connected to the antioxidant process solution tank 72.

[0088] In this embodiment, the concentration of the active component in the antioxidant process solution, the solid content of the flux in the antioxidant process solution and the pH value of the antioxidant process solution analyzed by the automatic analysis and addition device for the antioxidant process solution can be transmitted to the dosing device 71. The dosing device 71 can perform a dosing operation based on the analyzed concentration of the active component in the antioxidant process solution, the solid content of the flux in the antioxidant process solution and the pH value of the antioxidant process solution so that the concentration of the active component in the antioxidant process solution, the solid content of the flux in the antioxidant process solution and the pH value of the antioxidant process solution are maintained within an appropriate range.

[0089] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0090] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An automatic analysis and addition device for antioxidant process liquid, characterized in that: The device comprises: a multi-channel electromagnetic valve group, a first electromagnetic valve, an analytical sampling pump, a spectrophotometric sensor, an online refractive index sensor, and a second electromagnetic valve; The multi-channel electromagnetic valve group, the first electromagnetic valve, the analytical sampling pump, the spectrophotometric sensor, the online refractive index sensor and the second electromagnetic valve are connected in sequence; The first channel of the multi-channel solenoid valve group is connected to pure water, the second channel of the multi-channel solenoid valve group is connected to the standard solution, and the third channel of the multi-channel solenoid valve group is connected to the antioxidant process solution; The first solenoid valve is also connected to the first wastewater, the analytical sampling pump is used to sequentially extract the pure water, the standard solution and the antioxidant process solution to the spectrophotometric sensor and the online refractive index sensor, and the second solenoid valve is also connected to the second wastewater; The spectrophotometric sensor is used to determine the concentration of the active component in the antioxidant process solution based on the pure water and the standard solution; The online refractive index sensor is used to determine the solid content of the soldering flux in the antioxidant process solution based on the pure water and the standard solution.

2. The device according to claim 1, characterized in that The first solenoid valve is a two-position three-way solenoid valve, a first end of the first solenoid valve is connected to the first wastewater, a second end of the first solenoid valve is connected to the analysis sampling pump, and a third end of the first solenoid valve is connected to the multi-channel solenoid valve group.

3. The device according to claim 1, characterized in that The device further comprises a pH electrode, wherein an inlet of the pH electrode is in communication with the spectrophotometric sensor, and an outlet of the pH electrode is in communication with the online refractive index sensor.

4. The device according to claim 3, characterized in that The outlet of the pH electrode is higher than the inlet of the pH electrode in the direction of gravity.

5. The device according to claim 3, characterized in that The multi-channel solenoid valve group further includes a fourth channel, and the fourth channel is connected to the cleaning agent.

6. The device according to claim 1, characterized in that The spectrophotometric sensor includes a first light source, a semi-transparent and semi-reflective mirror, a plane mirror, a first sample flow inlet, a first sample flow outlet, a sample cell, a first photoelectric signal converter, a second photoelectric signal converter, and a signal output interface; The first light source irradiates the semi-transparent and semi-reflective mirror, and a first portion of light from the first light source is reflected to the plane mirror and transmitted to the second photoelectric signal converter through the plane mirror; The second portion of light from the first light source is transmitted by the semi-transparent and semi-reflective mirror to the sample cell, and reaches the first photoelectric signal converter through the sample cell; The first photoelectric signal converter and the second photoelectric signal converter are both connected to the signal output interface. The first sample flow inlet is the inlet of the sample pool, and the first sample flow outlet is the outlet of the sample pool.

7. The device according to claim 1, characterized in that The online refractive index sensor comprises: a second light source, an interference filter, an off-axis parabolic reflector, a prism, a test bench, a signal receiver, a second sample flow inlet and a second sample flow outlet; The light emitted by the second light source passes through the interference filter to the off-axis parabolic reflector, and the off-axis parabolic reflector reflects the light to the contact surface between the prism and the test bench, and then passes through the contact surface to the signal receiver; The antioxidant process solution flows in from the second sample flow inlet, flows through the test bench, and flows out from the second sample flow outlet; Wherein, the prism is located below the test bench in the direction of gravity.

8. The device according to claim 5, characterized in that The device further comprises an analysis and display module and a reagent storage module, and the spectrophotometric sensor, the online refractive index sensor and the pH electrode are all connected to the analysis and display module; The analysis and display module is used to collect, process, store and display the data output by the spectrophotometer sensor, the online refractive index sensor and the pH electrode; The reagent storage module is used to store the pure water, the standard solution, the first wastewater, the second wastewater and the cleaning agent.

9. An automatic analysis and addition system for antioxidant process liquid medicine, characterized in that: The system includes a dosing device and an automatic analysis and addition device for antioxidant process liquid medicine according to any one of claims 1 to 8, wherein the automatic analysis and addition device for antioxidant process liquid medicine is connected to the dosing device, and both the dosing device and the automatic analysis and addition device for antioxidant process liquid medicine are connected to the antioxidant process liquid medicine tank.

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