A real-time solution detection device and method

Abstract

The present invention provides a solution real-time detection device and method. The solution real-time detection device is externally connected to an electro-discharge machining system or a waste liquid treatment system, and includes a device housing, a controller, a solution detection system, an infusion system, and a liquid return system. The liquid return system and the infusion system are both provided with dispensing and filling peristaltic pumps, and the solution detection system is provided with a heat exchange cooling pipe. The present invention avoids the phenomenon that the detection sensor is damaged due to direct measurement in the electro-discharge machining solution containing current, and can perform on-line detection of the electro-discharge machining solution parameters in real time, continuously, accurately, and effectively, so as to make timely adjustments when the parameters deviate, ensure the stability and controllability of the production process, and improve the accuracy of the electro-discharge machining solution; it can be applied to industrial production to improve production quality, and can also be used in scientific research experiments to provide an experimental detection platform for the research of machining mechanisms; and it can ensure that the treated waste liquid after processing the waste liquid generated after machining meets the standards before being discharged, avoiding environmental pollution caused by poor treatment.

Description

Technical Field

[0001] The present invention relates to the field of solution detection, and particularly to a real-time solution detection device and method. Background Art

[0002] In electro-chemical machining, electrolyte plasma polishing, electroplating, micro-arc oxidation and other electro-machining technologies, during the actual production process, due to the continuity of production, it is necessary to monitor the changes in the component parameters of the electro-machining solution in real time. Once a deviation occurs, adjustments should be made immediately to make the production process stable and controllable, and to ensure the machining quality of the products. On the other hand, during the scientific research and experimental process using the above-mentioned machining technologies in universities and other research institutions, it is necessary to detect the changes in the electro-machining solution parameters in real time, so as to understand which factors in the electro-machining solution affect the machining surface quality or which factor has a greater impact on the machining surface quality among different factors, and then study the machining process mechanism to provide a theoretical guidance basis for actual production.

[0003] In electro-chemical machining, electrolyte plasma polishing, micro-arc oxidation, electroplating and other electro-machining technologies, the electro-machining solution during the machining process is in a powered-on state. Usually, the parameters of the electro-machining solution to be detected include parameters such as PH, conductivity, ion concentration of the formulated solution, and metal ion concentration of the workpiece itself. However, due to their own working principles, these parameter detection instruments cannot detect in a solution in a powered-on state (electro-machining solution, that is, there is an electric current passing through the solution). If forced to directly detect in a solution under the powered-on condition, not only will the measured data results be inaccurate, but also the detection instrument will be damaged. In addition, currently, the online ion concentration detector usually requires the temperature of the solution to be measured to be below 50 - 60 °C, so it cannot detect in the high-temperature electro-machining solution (usually 80 - 95 °C) of electrolyte plasma polishing.

[0004] In addition, after the above-mentioned technologies are processed, waste liquid containing heavy metals will be generated, which needs to be treated by corresponding waste liquid treatment methods such as chemical method, physical treatment method and biological treatment method, etc., and can only be discharged after meeting the national discharge standards. However, during the waste liquid treatment process, how to judge whether the water outlet data such as PH, metal ion concentration and other parameters meet the standards is an important issue. Currently, the judgment of whether the treated waste liquid meets the standards mainly uses empirical formulas, that is, first detect the heavy metal content in the waste water, simulate and obtain the optimal treatment process parameters for the waste liquid discharge to meet the standards in the laboratory, and then promote them to production applications. However, in the actual application process, it is impossible to fully ensure that each time the discharged waste liquid from the water outlet can meet the national discharge standards before being discharged. In addition, there are also ways to detect the waste liquid water outlet data by adopting off-line detection methods, but there are problems such as inconvenient detection, detection value lag, and inability to detect the waste liquid water outlet data in real time.

[0005] In summary, there is an urgent need for a solution real-time detection device for an integrated device for electroprocessing and waste liquid treatment after electroprocessing, which can not only detect the solution under the energized state during electroprocessing in real time, but also detect the effluent data of the waste liquid after processing in real time. Summary of the Invention

[0006] The object of the present invention is to overcome the deficiencies in the prior art and provide a solution real-time detection device and method, which can detect the electroprocessing solution parameters during the electroprocessing process of electrochemical machining, electrolyte plasma polishing, micro-arc oxidation, and electroplating in real time, effectively, quickly, and accurately, avoiding damage to the detection instrument caused by direct detection, and at the same time solving the problem that some existing detection instruments cannot measure in high-temperature electroprocessing solutions; in addition, it can also detect the effluent data of the heavy metal-containing waste liquid after waste liquid treatment in real time to ensure that the treated waste liquid meets the national discharge standards before being discharged.

[0007] To achieve the above object, the technical solution provided by the present invention is as follows:

[0008] In a first aspect, the present invention provides a solution real-time detection device for real-time detecting the parameters of the electroprocessing solution of an electroprocessing system or the effluent waste liquid of a waste liquid treatment device. The solution real-time detection device includes a device housing, the device housing forms a closed accommodation cavity, a controller, a solution detection system, an infusion system, and a liquid return system are arranged in the accommodation cavity, a control panel is embedded on the device housing, the controller is electrically connected to the control panel, the solution detection system, the infusion system, and the liquid return system, the input end of the infusion system and the output end of the liquid return system are externally connected to the electroprocessing system or the outlet of the waste liquid treatment device, the solution detection system is connected to the output end of the infusion system and the input end of the liquid return system through a pipeline, both the liquid return system and the infusion system are provided with dispensing and filling peristaltic pumps, and the solution detection system is provided with a heat exchange cooling pipe.

[0009] Further, the electroprocessing system is any one of electrochemical machining, electrolyte plasma polishing, electroplating machining, and micro-arc oxidation machining. The electroprocessing system includes an electroprocessing tank, a cathode, an anode, and a processing power supply. The positive electrode of the processing power supply is electrically connected to the anode, the negative electrode of the processing power supply is electrically connected to the cathode, and the anode and the cathode are arranged in the electroprocessing tank.

[0010] Further, the infusion system includes a first solenoid valve, a filter, and a first dispensing and filling peristaltic pump. One end of the first solenoid valve is connected to the water outlet of the electroprocessing system or the waste liquid treatment device through a pipeline. The other end of the first solenoid valve is connected to one end of the filter through a pipeline. The other end of the filter is connected to the input end of the first dispensing and filling peristaltic pump through a pipeline. The output end of the first dispensing and filling peristaltic pump is connected to the input end of the solution detection system.

[0011] Further, the solution detection system includes a first detection flow tank, a second detection flow tank, a first manual valve, a second manual valve, and a heat exchange and cooling pipe. A PH sensor and a conductivity sensor are installed in the first detection flow tank. Different types of ion concentration sensors are installed in the second detection flow tank. One end of the first manual valve is connected to one end of the second manual valve and the output end of the infusion system through a pipeline. The other end of the first manual valve is connected to one end of the first detection flow tank through a pipeline. The other end of the first detection flow tank is connected to the other end of the second flow detection tank and the input end of the liquid return system through a pipeline. The other end of the second manual valve is connected to the input end of the heat exchange and cooling pipe through a pipeline. The output end of the heat exchange and cooling pipe is connected to one end of the second flow detection tank through a pipeline.

[0012] Further, the liquid return system includes a second solenoid valve and a second dispensing and filling peristaltic pump. One end of the second solenoid valve is connected to the output end of the solution detection system through a pipeline. The other end of the second solenoid valve is connected to the input end of the second dispensing and filling peristaltic pump through a pipeline. The output end of the second dispensing and filling peristaltic pump is connected to the water outlet of the electroprocessing system or the waste liquid treatment device through a pipeline.

[0013] Further, the solution detection system also includes a first small electric valve, a second small electric valve, and a temperature sensor. The heat exchange inlet and outlet of the heat exchange and cooling pipe are externally connected to a chiller through a pipeline. The output end of the heat exchange and cooling pipe is connected to one end of the first small electric valve and one end of the second small electric valve through a pipeline. The temperature sensor is arranged on the connecting pipeline between the heat exchange and cooling pipe and the first small electric valve. The other end of the first small electric valve is connected to one end of the second flow detection tank. The other end of the second small electric valve is connected to the input end of the heat exchange and cooling pipe through a pipeline.

[0014] Further, the solution real-time detection device also includes a PH meter and a conductivity meter. A display touch screen is arranged on the control panel. The PH meter and the conductivity meter are arranged in the accommodation cavity. The PH meter and the conductivity meter are electrically connected to the controller. The controller is electrically connected to the display touch screen and an external computer.

[0015] Second aspect, the present invention also provides a real-time solution detection method, which is applied to the solution real-time detection device described in the first aspect and is used to detect the electroprocessing solution in the electroprocessing system and the waste liquid after being treated by the waste liquid treatment device.

[0016] Further, the detection of the electroprocessing solution in the electroprocessing system specifically includes the following steps:

[0017] S11: Connect the input end of the infusion system 101 and the output end of the liquid return system 103 to the electroprocessing system externally, calibrate the pH sensor, conductivity sensor, and each ion concentration sensor. After the calibration is correct, install the pH sensor and conductivity sensor in the first detection flow-through tank, and install each ion concentration sensor in the second detection flow-through tank, and enter the state to be detected;

[0018] S12: Open the first solenoid valve, second solenoid valve, first manual valve, and second manual valve, and set the working modes of the first dispensing and filling peristaltic pump and the second dispensing and filling peristaltic pump to the dispensing mode;

[0019] S13: Set the processing time, the electroprocessing system starts to work, and at the same time, start the first dispensing and filling peristaltic pump to intermittently extract the electroprocessing solution in the electroprocessing system to the solution detection system;

[0020] S14: After passing through the three-way pipe in the solution detection system, the electroprocessing solution is divided into two paths. One path directly flows into the first detection flow-through tank, and the other path flows into the second detection flow-through tank after being cooled by the heat exchange cooling pipe;

[0021] S15: The pH sensor, conductivity sensor, and each ion concentration sensor in the first detection flow-through tank and the second detection flow-through tank respectively start to detect the electroprocessing solution in the flow-through tank. The pH value and conductivity value data of the electroprocessing solution are transmitted to the controller through the pH meter and conductivity meter respectively, and the controller then transmits them to the touch display screen and / or computer for display; the ion concentration of the electroprocessing solution is directly transmitted to the touch display screen and / or computer for display through the controller;

[0022] S16: The detected electroprocessing solution flows out after being merged at the output end of the solution detection system and flows back intermittently into the electroprocessing solution pool along the return pipe under the action of the second dispensing and filling peristaltic pump through the second solenoid valve.

[0023] Further, the detection of the waste liquid after being treated by the waste liquid treatment device specifically includes the following steps:

[0024] S21: After the electro - machining system finishes its work, turn off the real - time detection device, replace the interfaces at the input end of the liquid infusion system 101 and the output end of the liquid return system 103, connect to the water outlet of the external waste liquid treatment device, replace the corresponding ion concentration sensors for the heavy metal ions to be treated, recalibrate each detection sensor again, and enter the state of waiting for detection;

[0025] S22: Open the first solenoid valve, the second solenoid valve, the first manual valve and the second manual valve, and set the working modes of the first dispensing and filling peristaltic pump and the second dispensing and filling peristaltic pump to the flow mode;

[0026] S23: Start the waste liquid treatment device to treat the waste liquid after electro - machining. At the same time, start the real - time detection device. The first dispensing and filling peristaltic pump pumps out the waste liquid at the outlet of the waste liquid treatment device and transports it to the solution detection system;

[0027] S24: The treated waste liquid is divided into two paths after passing through the three - way pipe of the solution detection system. One path directly flows into the first detection flow - through tank, and at the same time, the other path flows into the second detection flow - through tank through the heat exchange cooling pipe;

[0028] S25: The pH sensor in the first detection flow - through tank and each ion concentration sensor in the second detection flow - through tank respectively start to detect the waste liquid flowing out in the flow - through tank. The measured pH value of the waste liquid flowing out is transmitted to the controller through the pH meter, and then the controller transmits it to the touch display screen and / or the computer for display; the concentrations of various metal ions in the waste liquid are directly transmitted to the touch display screen and / or the computer for display through the controller;

[0029] S26: When the pH value of the detected waste liquid, the concentration of heavy metal ions, etc. reach or are lower than the national discharge standards, the waste liquid can be directly discharged into the sewer; otherwise, the real - time detection device alarms and reminds the operator to close the valve at the waste liquid discharge port, and the waste liquid treatment device stops working. Adjust the waste liquid treatment device, and then restart the waste liquid treatment device after adjustment;

[0030] S27: The waste liquid flowing out after detection is merged and flows out through the output end of the solution detection system and under the action of the second dispensing and filling peristaltic pump, flows back to the waste liquid treatment outlet along the return pipeline through the second solenoid valve.

[0031] Further, in the step S14 or step S24, the specific steps for the solution flowing into the second detection flow tank after being cooled by the heat exchange cooling pipe are as follows: When the temperature sensor detects that the temperature of the solution to be detected flowing out of the heat exchange cooling pipe is higher than T °C, the second small electric valve opens, and the first small electric valve closes. The detection solution flows back to the inlet of the heat exchange cooling pipe and then enters the heat exchange cooling pipe for internal circulation cooling until the temperature is not higher than T °C; when the temperature sensor detects that the temperature of the detection solution flowing out of the heat exchange cooling pipe is not higher than T °C, the second small electric valve closes, and the first small electric valve opens. The detection solution flows out of the heat exchange cooling pipe and enters the second detection flow tank. The detection solution is an electroprocessing solution or the waste liquid treated by the waste liquid treatment device.

[0032] Further, the specific steps for detecting the electroprocessing solution in the electroprocessing system further include the following: When the pH value and / or conductivity value and / or ion concentration of the electroprocessing solution in the processing system exceeds or is lower than the preset range, the real-time detection device alarms and reminds the operator to turn off the electroprocessing equipment, and the electroprocessing system immediately stops working.

[0033] Beneficial effects: The present invention provides a solution real-time detection device and method, which at least has the following beneficial effects:

[0034] (1) The present invention uses a dispensing and filling type peristaltic pump to divert the electroprocessing solution in the electroprocessing system to the solution detection system for detection, realizing the intermittent transmission of the electroprocessing solution in the pipeline, so as to ensure that the electroprocessing solution flowing into the solution detection system is not energized, avoiding the phenomenon that the detection sensor is damaged due to direct measurement in the electroprocessing solution containing current. In addition, the heat exchange cooling pipe in the solution detection system solves the problem that the ion concentration sensor cannot detect in high-temperature processing liquid;

[0035] (2) In industrial production, the present invention can detect the parameters of the electroprocessing solution online in real time, continuously, accurately and effectively, so as to make timely adjustments, ensure the stability and controllability of the production process, improve the precision of electroprocessing and ensure the quality of processed parts; in scientific research experiments, the present invention can detect the changes and laws of the parameters of the electroprocessing solution during the processing process in real time, providing an experimental detection platform for the research of processing mechanisms, and ultimately realizing providing a theoretical guidance basis for actual production;

[0036] (3) The present invention also detects the data parameters of the effluent waste liquid after treating the heavy metal-containing waste liquid after electroprocessing in real time, ensuring that the effluent waste liquid after waste liquid treatment meets the standards before discharge, and avoiding environmental pollution caused by poor treatment. Description of the Drawings

[0037] The invention will be further described with reference to the accompanying drawings. However, the embodiments shown in the drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on the following drawings without creative efforts.

[0038] Figure 1 Schematic perspective view of a real-time solution detection device of the present invention

[0039] Figure 2 Schematic internal structure view of a real-time solution detection device of the present invention.

[0040] Figure 3 Schematic working principle view of a real-time solution detection device of the present invention for real-time detection of electroprocessing solution

[0041] Figure 4 Schematic control principle view of a real-time solution detection device of the present invention.

[0042] Figure 5 Schematic view of the heat exchange cooling pipe and the external chiller of a real-time solution detection device of the present invention.

[0043] Figure 6 Schematic view of a real-time solution detection device of the present invention for detecting the effluent data of waste liquid treatment.

[0044] Among them, the reference numerals are as follows: 1. Equipment shell, 2. Control panel, 3. PH sensor, 4. Conductivity sensor, 5. First detection flow tank, 6. Filter, 7. Heat exchange cooling pipe, 8. Universal caster, 9. Ion concentration sensor, 10. Second detection flow tank, 11. Observation window door, 12. PH meter, 13. Conductivity meter, 14. First dispensing and filling peristaltic pump, 15. Second dispensing and filling peristaltic pump, 16. Controller installation frame, 17. First manual valve, 18. Second manual valve, 19. First solenoid valve, 20. Second solenoid valve, 21. Electroprocessing cell, 22. Anode, 23. Cathode, 24. Processing power supply, 25. First small electric valve, 26. Second small electric valve, 27. Temperature sensor, 28. Chiller, 100. Solution detection system, 101. Infusion system, 102. Electroprocessing system, 103. Liquid return system. Detailed implementation manners

[0045] To enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] Embodiment 1, a solution real-time detection device.

[0047] As shown in the attached Figures 1 to 6 figure, a solution real-time detection device in this embodiment is used to detect the parameters of the electroprocessing solution in the electroprocessing system 102 or the solution at the outlet of the waste liquid treatment device in real time, and includes a device housing 1. The device housing 1 forms a closed accommodation cavity, and a controller, a solution detection system 100, an infusion system 101, and a liquid return system 103 are arranged in the accommodation cavity. A control panel 2 is embedded on the device housing 1. The controller is electrically connected to the control panel 2, the solution detection system 100, the infusion system 101, and the liquid return system 103. The input end of the infusion system 101 and the output end of the liquid return system 103 are externally connected to the electroprocessing system 102 or the outlet of the waste liquid treatment device. The solution detection system 100 is connected to the output end of the infusion system 101 and the input end of the liquid return system 103 through a pipeline. Both the liquid return system 103 and the infusion system 101 are provided with dispensing and filling peristaltic pumps, and the solution detection system 100 is provided with a heat exchange cooling pipe 7.

[0048] In this embodiment, an observation window door 11 is provided on the device housing 1 to facilitate the operator to observe the working conditions of each detection sensor; four universal casters 8 are provided at the bottom of the device housing 1 and are equipped with a braking device, which is convenient for movement and can lock the universal casters 8 during work to avoid displacement; the accommodation cavity is divided into a front part and a rear part. The solution detection system 100 is installed in the front part, and the rear part is divided into three layers: upper, middle, and lower. The dispensing and filling peristaltic pump is installed in the lower layer, a pH meter 12 and a conductivity meter 13 are installed in the middle layer, and a controller installation frame 16 is provided in the upper layer.

[0049] The dispensing and filling peristaltic pump has two working modes: a flow mode and a dispensing mode. In the flow mode, the continuous transmission of the detection solution in the pipeline can be realized by setting the flow parameters; in the dispensing mode, the intermittent transmission of the electroprocessing solution in the pipeline can be realized by setting the dispensing times, the dispensing interval time, and the volume of the electroprocessing solution dispensed each time. Thus, the electroprocessing solution flowing into the solution detection system 100 driven by the dispensing and filling peristaltic pump is not electrified, that is, there is no current in the solution. The controller is specifically a PLC, which has multiple interfaces and communication methods to realize the control of the detection device.

[0050] The control panel 2 is provided with a touch display screen, a start / stop button, and an emergency stop button. The touch display screen, the start / stop button, and the emergency stop button are all electrically connected to the PLC. The touch display screen can display the parameter information of the electroprocessing solution or the wastewater after being treated by the waste liquid treatment device obtained by the PLC, and at the same time input instructions to control the detection device through the PLC. The start / stop button can start or stop the detection device, and the emergency stop button is used to emergently stop the detection device.

[0051] Specifically, the electroprocessing system 102 is any one of electrochemical machining, electrolyte plasma polishing, electroplating machining, and micro-arc oxidation machining, and the detection method for the waste liquid treated by the waste liquid treatment device is similar to the detection method for the electroprocessing solution in the electroprocessing system 102. In this embodiment, the real-time detection of the electroprocessing solution during the electrolyte plasma polishing process is taken as an example for the following description.

[0052] The electroprocessing system 102 of this embodiment is an electrolyte plasma polishing processing system, including an electroprocessing tank 21, a cathode 23, an anode 22, and a processing power supply 24. The positive pole of the processing power supply 24 is electrically connected to the anode 22, the negative pole of the processing power supply 24 is electrically connected to the cathode 23, and the anode 22 and the cathode 23 are arranged in the electroprocessing tank 21.

[0053] The electroprocessing tank 21 of the electroprocessing system 102 is filled with an electroprocessing solution. The workpiece to be processed is immersed in the electroprocessing solution as the anode, and the polishing of the workpiece to be processed is realized by energizing through the processing power supply 24. Whether the processing power supply 24 is energized for processing is controlled by the operator.

[0054] Specifically, the liquid delivery system 101 includes a first solenoid valve 19, a filter 6, and a first dispensing and filling peristaltic pump 14. The first solenoid valve 19 and the first dispensing and filling peristaltic pump 14 are both electrically connected to the PLC. One end of the first solenoid valve 19 is connected to the electroprocessing tank 21 through a pipeline, the other end of the first solenoid valve 19 is connected to one end of the filter 6 through a pipeline, the other end of the filter 6 is connected to the input end of the first dispensing and filling peristaltic pump 14 through a pipeline, and the output end of the first dispensing and filling peristaltic pump 14 is connected to the input end of the solution detection system 100.

[0055] The PLC controls whether the first solenoid valve 19 and the first dispensing and filling peristaltic pump 14 are opened. When the first solenoid valve 19 and the first dispensing and filling peristaltic pump 14 are opened and the first dispensing and filling peristaltic pump 14 is set to the dispensing mode, the first dispensing and filling peristaltic pump 14 intermittently extracts the electroprocessing solution in the electroprocessing tank 21, flows through the first solenoid valve 19 and the filter 6, and then flows into the first dispensing and filling peristaltic pump 14. The first dispensing and filling peristaltic pump 14 intermittently outputs the electroprocessing solution to the solution detection system 100. The filter can filter out the solid impurities in the electroprocessing solution.

[0056] Specifically, the solution detection system 100 includes a first detection flow tank 5, a second detection flow tank 10, a first manual valve 17, a second manual valve 18, and a heat exchange cooling pipe 7. The first detection flow tank 5 includes a pH sensor 3 and a conductivity sensor 3. The second detection flow tank 10 includes an ion concentration sensor 9. One end of the first manual valve 17 is connected to one end of the second manual valve 18 and the output end of the first dispensing and filling peristaltic pump 14 through a pipeline. The other end of the first manual valve 17 is connected to the first detection flow tank 5 through a pipeline. The other end of the first detection flow tank 5 is connected to the other end of the second flow detection tank 10 and the input end of the liquid return system 103 through a pipeline. The other end of the second manual valve 18 is connected to the input end of the heat exchange cooling pipe 7 through a pipeline. The output end of the heat exchange cooling pipe 7 is connected to one end of the second flow detection tank 10 through a pipeline.

[0057] Specifically, the solution real-time detection device further includes a pH meter 12 and a conductivity meter 13. A display touch screen is provided on the control panel 2. The pH meter 12 and the conductivity meter 13 are arranged in the accommodation cavity. The pH meter 12 and the conductivity meter 13 are electrically connected to the PLC. The PLC is electrically connected to the display touch screen and an external computer.

[0058] Among them, the ion concentration sensor 9 is a corrosion-resistant intelligent sensor. The ion concentration sensor 9 is directly connected to the PLC. The pH sensor 3 is connected to the pH meter 12, and the conductivity sensor 3 is connected to the conductivity meter 13. The pH meter 12 and the conductivity meter 13 are electrically connected to the PLC. The PLC obtains the pH value, conductivity value, and ion concentration value of the electroprocessing solution through the pH sensor 3, conductivity sensor 3, and ion concentration sensor 9, and then sends the pH value, conductivity value, and ion concentration value of the electroprocessing solution to be displayed on the display touch screen. The normal value range of the electroprocessing solution can be preset according to the pH value, conductivity value, and ion concentration value of the electroprocessing solution. When the pH value, conductivity value, and ion concentration value of the electroprocessing solution exceed or are lower than the preset range, an alarm is given and the equipment operation is stopped. After the adjustment is completed (replenishing the electroprocessing solution into the electroprocessing tank in the electroprocessing equipment), the processing equipment is restarted.

[0059] The PLC has multiple communication modes. In this embodiment, the RS485 communication is taken as an example for illustration. The PLC obtains the pH value, conductivity value, and ion concentration value of the electroprocessing solution through the RS485 communication method from the pH sensor 3, conductivity sensor 3, and ion concentration sensor 9 of the electroprocessing solution. In addition, the PLC is also provided with an RS485 communication interface for DTU wireless transmission, which can wirelessly transmit the detected electroprocessing solution parameter data to the terminal computer through DTU, and can realize the functions of displaying parameter status data, alarm, detecting data dot plotting, and directly displaying the detecting data on the computer screen on the terminal computer screen.

[0060] The opening and closing of the first manual valve 17 and the second manual valve 18 determine whether the electro - machining solution can be detected. The electro - machining solution entering the solution detection system 100 through the first dispensing and filling peristaltic pump 14 is divided into two branches through a tee - shaped pipeline. The first branch is formed by connecting a corrosion - resistant hose in sequence with the first manual valve 17 and the first detection flow - through tank 5; the second branch is formed by connecting a corrosion - resistant hose in sequence with the second manual valve 18, the heat - exchange cooling pipe 7, and the second detection flow - through tank 10. The electro - machining solution flowing into the first detection flow - through tank 5 is used to detect the pH value and conductivity value of the electro - machining solution, and the detection solution flowing into the second detection flow - through tank 10 is used to detect the ion concentration value of the electro - machining solution.

[0061] Specifically, the liquid return system 103 includes a second solenoid valve 20 and a second dispensing and filling peristaltic pump 15. One end of the second solenoid valve 20 is connected to the output ends of the first detection flow - through tank 5 and the second detection flow - through tank 10 through a pipeline, the other end of the second solenoid valve 20 is connected to the input end of the second dispensing and filling peristaltic pump 15 through a pipeline, and the output end of the second dispensing and filling peristaltic pump 15 is connected to the electro - machining cell 21 through a pipeline.

[0062] The liquid return system 103 is used to make the detected electro - machining solution flow back to the electro - machining cell 21. Among them, the second solenoid valve 20 is electrically connected to the PLC and is controlled to open / close by the PLC. When the second solenoid valve 20 is opened, starting the second dispensing and filling peristaltic pump 15 can transport the detected electro - machining solution in the solution detection system 100 back into the electro - machining cell 21.

[0063] Specifically, the solution detection system 100 further includes a first small electric valve 25, a second small electric valve 26, and a temperature sensor 27. The heat - exchange cooling pipe 7 is externally connected to a chiller 28 through a pipeline. The output end of the heat - exchange cooling pipe 7 is connected to one end of the first small electric valve 25 and one end of the second small electric valve 26 through a pipeline. The temperature sensor 27 is arranged on the connecting pipeline between the heat - exchange cooling pipe 7 and the first small electric valve 25. The other end of the first small electric valve 25 is connected to one end of the second flow - through detection tank, and the other end of the second small electric valve 26 is connected to the input end of the heat - exchange cooling pipe 7 through a pipeline.

[0064] The two heat exchange interfaces of the heat exchange cooling pipe 7 are externally connected to the chiller 28 and are respectively connected to the cold water supply port and the return port of the chiller 28; the chiller 28 supplies cooling water and realizes the circulating cooling and temperature reduction of the electro - machining solution in the heat exchange cooling pipe 7 through heat exchange; when the temperature sensor 27 detects that the temperature of the electro - machining solution flowing out of the heat exchange cooling pipe 7 is higher than the preset temperature T °C, the second small electric valve 26 opens and the first small electric valve 25 closes, and the electro - machining solution flows back to the inlet of the heat exchange cooling pipe 7 and then enters the heat exchange cooling pipe 7 for circulating cooling until the temperature is lower than T °C; when the temperature sensor 27 detects that the temperature of the electro - machining solution flowing out of the heat exchange cooling pipe 7 does not exceed T °C, the second small electric valve 26 closes and the first small electric valve 25 opens, and the electro - machining solution flows out of the heat exchange cooling pipe 7 and enters the second detection flow - through tank 10. In this embodiment, the preset temperature value T °C is 50 °C.

[0065] The working principle of this embodiment: After the electro - machining system 102 is started, instructions are input through the touch display screen to start the liquid infusion system 101, the solution detection system 100, and the liquid return system 103. The first distribution and filling type peristaltic pump 14 of the liquid infusion system 101 intermittently transports the electro - machining solution in the electro - machining pool 21 to the two detection flow - through tanks in the solution detection system 100. Among them, the first detection flow - through tank 5 directly receives the electro - machining solution for measuring the pH value and conductivity value of the electro - machining solution, and the second detection flow - through tank 10 is cooled by the heat exchange cooling pipe 7 so that the electro - machining solution does not exceed the preset temperature before receiving the electro - machining solution, and is used to measure the ion concentration value of the electro - machining solution; the detected ion concentration value of the electro - machining solution is directly sent to the PLC through RS485 communication, while the detected pH value and conductivity value of the electro - machining solution are respectively sent to the PLC through RS485 communication after passing through the pH meter 12 and the conductivity meter 13. The PLC sends the obtained pH value, conductivity value, and each ion concentration value of the electro - machining solution to the display touch screen for display through RS485 communication, and at the same time wirelessly sends them to the terminal computer for display through the DTU. When the pH value, conductivity value, and each ion concentration value of the electro - machining solution obtained by the PLC exceed or are lower than the preset range value, an alarm is issued and the electro - machining system 102 is stopped. After the correction (supplementing the electro - machining solution to the electro - machining equipment) is completed, the equipment is restarted. The measured electro - machining solution flows back to the solution pool to be detected through the liquid return system 103 after the detection is completed.

[0066] A real-time solution detection device and method according to this embodiment are used to perform real-time detection on the electroprocessing solution during the production and processing of the electroprocessing system 102. The electroprocessing solution in the electroprocessing system 102 is drained into the solution detection system 100 by using a dispensing and filling peristaltic pump for detection. The pH value and conductivity value of the electroprocessing solution are directly detected, and the ion concentration value of the electroprocessing solution is detected after cooling. The intermittent transmission of the electroprocessing solution in the pipeline is realized through the dispensing and filling peristaltic pump, so as to ensure that the electroprocessing solution flowing into the solution detection system 100 is not energized, avoiding the phenomenon that the detection sensor is damaged due to direct measurement in the electroprocessing solution containing current, and being able to perform on-line detection on the electroprocessing solution parameters in real time, continuously, accurately and effectively. In the case of deviation of the electroprocessing solution parameters, timely adjustment can be made to ensure the stable and controllable production process, improve the accuracy of electroprocessing and ensure the processing quality of products; in addition, this embodiment also performs real-time detection on the effluent data of the waste liquid treatment after electroprocessing. The waste liquid at the effluent of the waste liquid treatment device is drained into the solution detection system 100 by using the flow working mode of the dispensing and filling peristaltic pump for detection, and the data of the effluent waste liquid such as pH and ion concentrations are detected to ensure that the waste liquid is discharged only after meeting the national discharge standards, avoiding environmental pollution.

[0067] Embodiment 2, a real-time solution detection method.

[0068] This embodiment provides a real-time solution detection method. The real-time solution detection method is applied to the real-time solution detection device described in Embodiment 1 and is used to detect the electroprocessing solution in the electrolyte plasma polishing system and the waste liquid after being treated by the waste liquid treatment device in real time.

[0069] Among them, the specific steps for detecting the electroprocessing solution in the electroprocessing system are as follows:

[0070] S11: Connect the input end of the infusion system 101 and the output end of the return liquid system 103 to the electroprocessing system externally, calibrate the pH, conductivity, and ion concentration sensors 9 (including ammonium ion, chloride ion, and copper ion concentration sensors). After the calibration is correct, install the pH and conductivity sensors 3 in the first detection flow-through tank 5, and install the ion concentration sensor 9 in the second detection flow-through tank 10 to enter the state to be detected.

[0071] S12: Open the first solenoid valve 19, the second solenoid valve 20, the first manual valve 17, and the second manual valve 18, and set the working modes of the first dispensing and filling peristaltic pump 14 and the second dispensing and filling peristaltic pump 15 to the dispensing mode.

[0072] S13: The processing time is set to 120s, the electrolyte plasma polishing electromachining system 102 starts working, and the display touch screen controls the first distribution filling type peristaltic pump 14 to start working, and sets the distribution times to 60 times, the distribution interval time to 1s and the single distribution capacity to 10ml.

[0073] S14: The first dispensing and filling peristaltic pump 14 intermittently extracts the electromachining solution in the electromachining solution pool, and transmits it to the liquid inlet of the solution detection system 100 through the infusion pipeline after being filtered through the first solenoid valve 19 and the filter 6 in sequence.

[0074] S15: The electromachining solution flows through the liquid inlet of the solution detection system 100 through the three-way pipe and is divided into two branches. The first branch is that the electromachining solution flows directly through the first manual valve 17 into the first detection flow slot 5. The second branch is that the electromachining solution flows through the second manual valve 18 and the heat exchange cooling tube 7 and then enters the second detection flow slot 10 after being cooled to below 50°C.

[0075] S16: The pH sensor 3, the conductivity sensor 3, and the ion concentration sensor 9 start to detect the electrolyte solution in the circulation tank respectively. The data measured in real time by the pH sensor 3 and the conductivity sensor 3 are transmitted to the PLC via the pH meter 12 and the conductivity meter 13 respectively, and the PLC then transmits the data to the touch screen for display; the data measured by the ion concentration sensor 9 is directly transmitted to the touch screen for display via the PLC.

[0076] S17: The measured pH value, conductivity value and ion concentration value data are transmitted to the terminal computer through PLC and then wirelessly via DTU for display. The detection data is plotted and the change of curve over time is displayed on the terminal computer screen. At the same time, the data can be saved to the computer memory disk.

[0077] S18: The electromachining solution after detection flows out through the liquid outlet of the solution detection system 100 and flows back to the electromachining solution pool intermittently along the reflux pipeline through the second solenoid valve 20 under the action of the second distribution and filling peristaltic pump 15.

[0078] S19: Repeat steps S14-S18 until the electromachining system stops working and the solution real-time detection equipment stops working, thereby completing the real-time detection of the electrolyte during the electrolyte plasma polishing process.

[0079] The detection of the waste liquid after being treated by the waste liquid treatment device specifically comprises the following steps:

[0080] S21: After the electrolyte plasma polishing system finishes processing, turn off the real-time detection device, replace the interfaces at the input end of the liquid infusion system 101 and the output end of the liquid return system 103, connect to the outlet of the external waste liquid treatment device, replace the corresponding ion concentration sensors (including copper ion, cadmium ion, and lead ion concentration sensors) for the heavy metal ions to be treated, recalibrate each detection sensor again, and enter the state to be detected.

[0081] S22: Open the first solenoid valve 19, the second solenoid valve 20, the first manual valve 17, and the second manual valve 18, and set the working modes of the first dispensing and filling peristaltic pump 14 and the second dispensing and filling peristaltic pump 15 to the flow rate mode, with the flow rate set to 20 ml / min.

[0082] S23: Start the waste liquid treatment device to treat the waste liquid after electrolyte plasma polishing. At the same time, start the real-time detection device. The first dispensing and filling peristaltic pump 14 pumps out the waste liquid at the outlet of the waste liquid treatment device and transports it to the solution detection system 100.

[0083] S24: The treated waste liquid is divided into two paths after passing through the three-way pipe of the solution detection system 100. One path directly flows into the first detection flow tank 5, and at the same time, the other path flows into the second detection flow tank 10 through the heat exchange cooling pipe 7.

[0084] S25: The pH sensor 3 in the first detection flow tank 5 and each ion concentration sensor 9 in the second detection flow tank 10 respectively start to detect the waste liquid flowing out in the flow tank. The pH value data of the electrolyte solution is transmitted to the PLC through the conductivity meter, and then the PLC transmits it to the touch display screen and / or computer for display; the concentrations of various metal ions in the waste liquid are directly transmitted to the touch display screen and / or computer for display through the PLC.

[0085] S26: When the pH value of the detected waste liquid, the concentration of heavy metal ions, etc. reach or are lower than the national discharge standards, the waste liquid can be directly discharged into the sewer; otherwise, the real-time detection device alarms and reminds the operator to close the valve at the waste liquid discharge outlet, the waste liquid treatment device stops working, adjust the waste liquid treatment device (such as replenishing treatment chemicals, replacing the new ion exchange resin column, etc.), and restart the waste liquid treatment device after adjustment.

[0086] S27: The waste liquid flowing out after detection is merged and flows out through the output end of the solution detection system and is intermittently returned to the waste liquid treatment outlet along the return pipe under the action of the second dispensing and filling peristaltic pump through the second solenoid valve.

[0087] S28: Repeat the steps of S23 - S27 until the waste liquid treatment device stops working and the solution real-time detection device shuts down, thus completing the real-time detection of the waste liquid outlet data.

[0088] A real-time detection method for a solution in this embodiment is used to perform real-time detection on the electroprocessing solution during the electrolyte plasma polishing process and the waste liquid after being treated by a waste liquid treatment device. Among them, for the real-time detection of the electroprocessing solution during the electrolyte plasma polishing process, a dispensing and filling peristaltic pump is used to achieve the intermittent transmission of the electroprocessing solution in the pipeline, thereby ensuring that the electroprocessing solution flowing into the solution detection system 100 is not energized, avoiding the phenomenon that the detection sensor is damaged due to direct measurement in the electroprocessing solution containing current, and being able to perform on-line detection of the electroprocessing solution parameters in real time, continuously, accurately and effectively. In the case where the electroprocessing solution parameters deviate, adjustments can be made in a timely manner to ensure the stable and controllable production process, improve the processing accuracy of electrolyte plasma polishing and ensure the processing quality of products. For the real-time detection of the polished waste liquid after being treated by the waste liquid treatment device, a dispensing and filling peristaltic pump is used to drain the waste liquid at the outlet of the waste liquid treatment device into the solution detection system 100 for detection, and the data of the outlet waste liquid such as PH and the concentration of each ion are detected to ensure that the outlet waste liquid after waste liquid treatment meets the national discharge standards before being discharged.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A real-time solution detection device, characterized in that, it is used to detect the parameters of the electroprocessing solution or the effluent waste liquid of the waste liquid treatment device in the electroprocessing system in real time. The solution real-time detection device includes a device housing, the device housing forms a closed accommodation cavity, and a controller, a solution detection system, an infusion system, and a liquid return system are arranged in the accommodation cavity. A control panel is embedded on the device housing, and the controller is electrically connected to the control panel, the solution detection system, the infusion system, and the liquid return system. The input end of the infusion system and the output end of the liquid return system are externally connected to the electroprocessing system or the water outlet of the waste liquid treatment device. The solution detection system is connected to the output end of the infusion system and the input end of the liquid return system through pipelines. Both the liquid return system and the infusion system are provided with dispensing and filling peristaltic pumps, and the solution detection system is provided with a heat exchange cooling pipe; the solution detection system includes a first detection flow tank, a second detection flow tank, a first manual valve, a second manual valve, and a heat exchange cooling pipe. A pH sensor and a conductivity sensor are installed in the first detection flow tank, and different types of ion concentration sensors are installed in the second detection flow tank. One end of the first manual valve is connected to one end of the second manual valve and the output end of the infusion system through a pipeline, and the other end of the first manual valve is connected to one end of the first detection flow tank through a pipeline. The other end of the first detection flow tank is connected to the other end of the second detection flow tank and the input end of the liquid return system through a pipeline. The other end of the second manual valve is connected to the input end of the heat exchange cooling pipe through a pipeline, and the output end of the heat exchange cooling pipe is connected to one end of the second detection flow tank through a pipeline; the infusion system includes a first solenoid valve, a filter, and a first dispensing and filling peristaltic pump. One end of the first solenoid valve is connected to the electroprocessing system or the water outlet of the waste liquid treatment device through a pipeline, the other end of the first solenoid valve is connected to one end of the filter through a pipeline, the other end of the filter is connected to the input end of the first dispensing and filling peristaltic pump through a pipeline, and the output end of the first dispensing and filling peristaltic pump is connected to the input end of the solution detection system; the liquid return system includes a second solenoid valve and a second dispensing and filling peristaltic pump. One end of the second solenoid valve is connected to the output end of the solution detection system through a pipeline, the other end of the second solenoid valve is connected to the input end of the second dispensing and filling peristaltic pump through a pipeline, and the output end of the second dispensing and filling peristaltic pump is externally connected to the electroprocessing system or the water outlet of the waste liquid treatment device through a pipeline.

2. The real-time solution detection device according to claim 1, characterized in that, the electroprocessing system is any one of electrochemical machining, electrolyte plasma polishing, electroplating machining, and micro-arc oxidation machining. The electroprocessing system includes an electroprocessing tank, a cathode, an anode, and a processing power supply. The positive electrode of the processing power supply is electrically connected to the anode, the negative electrode of the processing power supply is electrically connected to the cathode, and the anode and the cathode are arranged in the electroprocessing tank.

3. The real-time solution detection device according to claim 1, It is characterized in that the solution detection system further includes a first small electric valve, a second small electric valve and a temperature sensor. The heat exchange inlet and outlet of the heat exchange cooling pipe are externally connected to a chiller through a pipeline. The output end of the heat exchange cooling pipe is connected to one end of the first small electric valve and one end of the second small electric valve through a pipeline. The temperature sensor is arranged on the connecting pipeline between the heat exchange cooling pipe and the first small electric valve. The other end of the first small electric valve is connected to one end of the second detection flow channel. The other end of the second small electric valve is connected to the input end of the heat exchange cooling pipe through a pipeline.

4. The real-time solution detection device according to claim 1, It is characterized in that the real-time solution detection device further includes a pH meter and a conductivity meter. A display touch screen is arranged on the control panel. The pH meter and the conductivity meter are arranged in the accommodation cavity. The pH meter and the conductivity meter are electrically connected to the controller. The controller is electrically connected to the display touch screen and an external computer.

5. A real-time solution detection method, It is characterized in that the real-time solution detection method is applied to the real-time solution detection device according to any one of claims 1 to 4, and is used to detect the electroprocessing solution in the electroprocessing system and the waste liquid after being treated by the waste liquid treatment device.

6. The real-time solution detection method according to claim 5, It is characterized in that the specific steps of detecting the electroprocessing solution in the electroprocessing system are as follows: S11: Connect the input end of the liquid infusion system and the output end of the liquid return system to the electroprocessing system externally, calibrate the pH sensor, conductivity sensor and each ion concentration sensor. After the calibration is correct, install the pH sensor and conductivity sensor in the first detection flow channel, and install each ion concentration sensor in the second detection flow channel, and enter the state to be detected; S12: Open the first solenoid valve, the second solenoid valve, the first manual valve and the second manual valve, and set the working modes of the first dispensing and filling peristaltic pump and the second dispensing and filling peristaltic pump to the dispensing mode; S13: Set the processing time, the electroprocessing system starts to work, and at the same time start the first dispensing and filling peristaltic pump to intermittently extract the electroprocessing solution in the electroprocessing system to the solution detection system; S14: After passing through the three-way pipeline in the solution detection system, the electroprocessing solution is divided into two paths. One path directly flows into the first detection flow channel, and the other path flows into the second detection flow channel after being cooled by the heat exchange cooling pipe; S15: The pH sensor, conductivity sensor and each ion concentration sensor in the first detection flow channel and the second detection flow channel respectively start to detect the electroprocessing solution in the flow channel. The pH value and conductivity value data of the electroprocessing solution are respectively transmitted to the controller through the pH meter and the conductivity meter, and the controller then transmits them to the touch display screen and / or the computer for display; the ion concentration of the electroprocessing solution is directly transmitted to the touch display screen and / or the computer for display through the controller; S16: The detected electroprocessing solution flows out after being merged at the output end of the solution detection system and flows back to the electroprocessing solution pool intermittently along the return pipeline under the action of the second dispensing and filling peristaltic pump through the second solenoid valve.

7. A real-time solution detection method as described in claim 5, characterized in that, the detection of the waste liquid after being treated by the waste liquid treatment device specifically includes the following steps: S21: After the electroprocessing system finishes working, turn off the real-time detection device, replace the input end interface of the liquid infusion system and the output end interface of the liquid return system, switch to the water outlet of the externally connected waste liquid treatment device, replace the corresponding heavy metal ion concentration sensor for the heavy metal ions to be treated, recalibrate each detection sensor again, and enter the state to be detected; S22: Open the first solenoid valve, the second solenoid valve, the first manual valve and the second manual valve, and set the working modes of the first dispensing and filling peristaltic pump and the second dispensing and filling peristaltic pump to the flow mode; S23: Start the waste liquid treatment device to treat the waste liquid after electroprocessing. At the same time, start the real-time detection device. The first dispensing and filling peristaltic pump pumps out the waste liquid at the water outlet of the waste liquid treatment device and transports it to the solution detection system; S24: After passing through the three-way pipe of the solution detection system, the treated waste liquid is divided into two paths. One path directly flows into the first detection flow tank, and at the same time, the other path flows into the second detection flow tank through the heat exchange cooling pipe; S25: The PH sensor in the first detection flow tank and each ion concentration sensor in the second detection flow tank respectively start to detect the outlet waste liquid in the flow tank. The measured PH value of the outlet waste liquid is transmitted to the controller through the PH meter, and the controller then transmits it to the touch display screen and / or computer for display; the concentrations of various metal ions in the waste liquid are directly transmitted to the touch display screen and / or computer for display through the controller; S26: When the detected PH value and heavy metal ion concentration of the waste liquid reach or are lower than the national discharge standards, the waste liquid can be directly discharged into the sewer; otherwise, the real-time detection device alarms and reminds the operator to close the solenoid valve at the waste liquid outlet, and the waste liquid treatment device stops working. Adjust the waste liquid treatment device, and restart the waste liquid treatment device after adjustment; S27: The outlet waste liquid after detection flows out through the output end of the solution detection system and is merged, and under the action of the second dispensing and filling peristaltic pump, it flows back to the waste liquid treatment outlet along the return pipe through the second solenoid valve.

8. A real-time solution detection method as described in claim 6 or 7, characterized in that, in step S14 or step S24, the specific steps of flowing into the second detection flow tank after being cooled by the heat exchange cooling pipe are as follows: When the temperature sensor detects that the temperature of the electroprocessing solution flowing out of the heat exchange cooling pipe is higher than T °C, the second small electric valve opens, the first small electric valve closes, and the electroprocessing solution flows back to the inlet of the heat exchange cooling pipe and then enters the heat exchange cooling pipe for internal circulation cooling until it is not higher than T °C; when the temperature sensor detects that the temperature of the electroprocessing solution flowing out of the heat exchange cooling pipe is not higher than T °C, the second small electric valve closes, the first small electric valve opens, and the electroprocessing solution flows out of the heat exchange cooling pipe and enters the second detection flow tank.

9. A real-time solution detection method as described in claim 6, characterized in that, it further includes the following steps: When the pH value and / or conductivity value and / or ion concentration of the electro-chemical machining solution in the machining system exceeds or falls below the preset range, the real-time detection device alarms and reminds the operator to turn off the electro-chemical machining equipment, and the electro-chemical machining system immediately stops working.

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