Water quality multi-parameter automatic checking and measuring system device

Abstract

The invention relates to a water quality multi-parameter automatic checking and measuring system device which comprises a display panel assembly, a pump valve mounting plate assembly and a measuring pool assembly, the display panel assembly is used for displaying the running state and operation information, and the pump valve mounting plate assembly comprises a multi-way valve and a peristaltic pump and is used for controlling conveying of a water sample or standard liquid; the measuring cell assembly comprises a main body measuring cell, an electrode, a liquid level detector, a drain valve, a waste liquid pump and an ultrasonic vibrator, and through cooperation of the display panel assembly, the pump valve mounting plate assembly and the measuring cell assembly, full-flow automation of water sample collection, standard liquid calibration and cleaning is achieved; the measuring cell adopts a stainless steel independent chamber and is provided with a liquid level detector, a pinch valve and a waste liquid pump, interference is avoided, safety is improved, in-situ self-cleaning is achieved by integrating a high-frequency ultrasonic vibrator, the service life of an electrode is prolonged, long-term accuracy and reliability of data are ensured by combining a response time intelligent diagnosis module, and the device is suitable for water quality online monitoring and industrial control.

Description

Technical Field

[0001] This invention relates to the field of automatic online water quality monitoring, specifically to an automatic verification and measurement system for multiple water quality parameters. Background Technology

[0002] With increasingly stringent environmental monitoring requirements, the accuracy, reliability, and traceability of data from multi-parameter online water quality monitoring equipment have become core regulatory needs. However, existing multi-parameter online monitoring devices are often exposed to harsh environments for extended periods, making their sensor surfaces prone to biofouling and mineral deposits, leading to decreased measurement accuracy or even data unusability. Therefore, regular sensor maintenance and calibration are necessary. However, current routine checks primarily rely on manual operation, which presents the following problems: 1. Low efficiency: Maintenance personnel need to frequently go to the site to perform standard tests / calibrations on the electrode sensors, which consumes a lot of manpower. 2. Insufficient data reliability: Manual operation is prone to errors, and the frequency of verification is low, making it difficult to detect equipment abnormalities in a timely manner; 3. High compliance risks: Manually recorded and verified data may be omitted or tampered with, making it difficult to meet the requirements of data authenticity and traceability.

[0003] In response to the above situation, the present invention provides a system device for automatic verification and measurement of multiple water quality parameters, which can realize functions such as automatic sampling and testing, automatic verification of standard solution, automatic calibration, and automatic cleaning, effectively improving operation and maintenance efficiency and reducing operation and maintenance costs. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies, adapt to practical needs, and provide an automatic multi-parameter water quality verification and measurement system to solve the following technical problems: low efficiency (requiring frequent on-site testing / calibration of electrode sensors by maintenance personnel, resulting in high labor costs); insufficient data reliability (manual operation is prone to errors, and the low verification frequency makes it difficult to detect equipment abnormalities in a timely manner); and high compliance risks (manually recorded verification data may be omitted or tampered with, making it difficult to meet the requirements of data authenticity and traceability).

[0005] To achieve the objective of this invention, the technical solution adopted by this invention is as follows: designing an automatic verification and measurement system device for multiple water quality parameters, including a display panel assembly, a pump and valve mounting plate assembly and a measurement pool assembly. The display panel assembly is used to display the operating status and operation information. The pump and valve mounting plate assembly includes a multi-way valve and a peristaltic pump for controlling the delivery of water samples or standard solutions. The measurement cell assembly includes a main measurement cell, electrodes, a liquid level detector, a drain valve, a waste liquid pump, and an ultrasonic transducer, used to realize water sample testing, standard solution calibration and verification, and intelligent diagnosis based on response time.

[0006] Preferably, the display panel assembly is provided with a display screen and a transparent observation window for displaying the operating status in real time and for intuitively observing the water sample entry, exit, and discharge.

[0007] Preferably, the pump and valve mounting plate assembly is sequentially equipped with a conductivity multi-port valve, a dissolved oxygen multi-port valve, a pH multi-port valve, a turbidity multi-port valve, and corresponding conductivity peristaltic pumps, dissolved oxygen peristaltic pumps, pH peristaltic pumps, and turbidity peristaltic pumps. It also includes a turbidity gas pump and a dissolved oxygen pump. Each multi-port valve and its corresponding peristaltic pump is connected to the corresponding measuring cell through pipelines to achieve accurate delivery of the verification / calibration liquid during the verification and calibration of the corresponding electrode.

[0008] Preferably, an independent electrical control module is provided on the back of the pump and valve mounting plate assembly. The electrical control module includes a power supply system, a communication main control board, a parameter verification control board, and an ultrasonic transducer control board. This electrical module is isolated from the front of the pump and valve assembly through the mounting plate to achieve water and electricity separation.

[0009] Preferably, the main measuring pool in the measuring pool assembly is made of stainless steel, and its internal structure is an independent compartment. The water inlet pipe and overflow pipe are transparent and visible structures for observing the suction and overflow of water samples.

[0010] Preferably, the measuring pool assembly includes a measuring pool cover and a cleaning water inlet, and a dissolved oxygen measuring pool level detector, a conductivity measuring pool level detector, a turbidity measuring pool level detector and a pH measuring pool level detector are sequentially installed on the outside of the measuring pool cover.

[0011] Preferably, the bottom of the measuring pool assembly is provided with a pH measuring pool drain clamp valve, a turbidity measuring pool drain clamp valve, a conductivity measuring pool drain clamp valve, and a dissolved oxygen measuring pool drain clamp valve. The liquid level detector and the clamp valves are linked with the measuring pool to control the discharge of liquid and maintain the liquid level.

[0012] Preferably, the outside of the measuring cell cover is equipped with a pH electrode, a turbidity electrode, a conductivity electrode, a dissolved oxygen electrode, and a dissolved oxygen blowing pipe, the corresponding installation positions of which match each measuring cell; each measuring cell is equipped with a waste liquid discharge pump for the dissolved oxygen measuring cell, a waste liquid discharge pump for the conductivity measuring cell, a waste liquid discharge pump for the turbidity measuring cell, and a waste liquid discharge pump for the pH measuring cell, respectively, for guiding the waste liquid in the corresponding measuring cell to the waste liquid collection container.

[0013] Preferably, a high-frequency ultrasonic transducer is integrated on the back of the main measuring cell. After the measurement process is completed, the ultrasonic transducer excites cavitation effect into the liquid in the measuring cell, generating transient high-energy micro-jets and local shock waves to perform in-situ ultrasonic cleaning of the electrodes and the inner wall of the measuring cell, removing biological dirt and deposits attached to the electrode surface.

[0014] Preferably, it further includes an intelligent discrimination module which is provided with an intelligent discrimination algorithm based on response dynamics and is used for automatically calculating the response time t of each electrode during the on-line detection of quality control samples and comparing it with a preset threshold: When t ≤ 60 seconds, the system runs normally; when 60 < t ≤ 90 seconds, ultrasonic cleaning is automatically triggered once and re-detection is carried out; when t > 90 seconds, ultrasonic cleaning is continuously performed twice and re-measured. If it is still greater than 90 seconds after two cleanings, a cleaning warning prompt is sent through the human-machine interface.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By organically combining the display panel assembly, the pump valve mounting plate assembly and the measurement cell assembly, the present invention realizes the full-process automation of water sample collection, standard solution injection, calibration, testing and cleaning, greatly reducing manual intervention. During the operation of the system, monitoring data can be stably output, which not only improves the operation and maintenance efficiency but also reduces the errors and costs caused by manual operation.

[0016] 2. The measurement cell of the present invention adopts a stainless steel independent chamber structure and is equipped with an independent liquid level detector, a pinch valve and a waste liquid pump, so that the tests of electrodes with different parameters do not interfere with each other, ensuring the accuracy and traceability of data. At the same time, an electrical control module is arranged on the back of the pump valve mounting plate and through water and electricity isolation settings, effectively avoiding the electrical risks caused by liquid leakage and improving the safety and reliability of the system operation.

[0017] 3. The present invention integrates high-frequency ultrasonic oscillators on the back of the measurement cell and realizes in-situ cleaning of the electrodes and the cell wall through the liquid-phase cavitation effect, which can effectively remove biological fouling, organic residues and inorganic deposits, thereby reducing the manual maintenance frequency, extending the service life of the electrodes and improving the long-term stability of the system. 4. The present invention introduces an intelligent diagnosis mechanism based on response time, which can automatically evaluate the cleanliness according to the electrode response speed and trigger adaptive ultrasonic cleaning or manual maintenance warning, realizing real-time monitoring and intelligent management of the electrode state. Through the dual innovations of ultrasonic cavitation self-cleaning and response time intelligent diagnosis, the present invention ensures the long-term accuracy and reliability of data, meets environmental protection requirements, and is applicable to various scenarios such as on-line water quality monitoring and industrial process control. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the front structural schematic diagram of the present invention; Figure 3 is the schematic diagram of the measurement cell assembly of the present invention; Figure 4 is the schematic diagram of the instrument flow of the present invention; In the diagram: 1. Display screen; 2. Conductivity multi-way valve; 3. Dissolved oxygen multi-way valve; 4. pH multi-way valve; 5. Turbidity multi-way valve; 6. Conductivity peristaltic pump; 7. Dissolved oxygen peristaltic pump; 8. pH peristaltic pump; 9. Turbidity peristaltic pump; 10. pH electrode; 11. Turbidity electrode; 12. Conductivity electrode; 13. Dissolved oxygen electrode; 14. Main measuring cell; 15. Inlet pipe; 16. Overflow pipe; 17. pH measuring cell drain clamp valve; 18. Turbidity measuring cell drain clamp valve; 19. Conductivity measuring cell drain... 20. Liquid clamp valve; 21. Dissolved oxygen measuring cell drain clamp valve; 22. Dissolved oxygen blowing pipe; 23. Measuring cell cover; 24. Cleaning water inlet; 25. Dissolved oxygen measuring cell level detector; 26. Conductivity measuring cell level detector; 27. Turbidity measuring cell level detector; 28. pH measuring cell level detector; 29. ​​Ultrasonic transducer; 30. Dissolved oxygen measuring cell waste liquid drain pump; 31. Conductivity measuring cell waste liquid drain pump; 32. Turbidity measuring cell waste liquid drain pump; 33. pH measuring cell waste liquid drain pump. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments: A multi-parameter automatic verification and measurement system for water quality, see [link / reference]. Figures 1 to 4 It includes a display panel assembly, a pump and valve mounting plate assembly, and a measuring cell assembly. The display panel assembly is used to display the operating status and operation information. The pump and valve mounting plate assembly includes a multi-way valve and a peristaltic pump for controlling the delivery of water samples or standard solutions. The measurement cell assembly includes a main measurement cell 14, electrodes, a level detector, a drain valve, a waste liquid pump, and an ultrasonic transducer 28, used to realize water sample testing, standard solution calibration and verification, and intelligent diagnosis based on response time.

[0020] For details, see Figure 2 The display panel assembly is equipped with a display screen 1 and a transparent observation window, which are used to display the operating status in real time and to intuitively observe the water sample entry, exit and discharge.

[0021] For more details, see Figure 2 The pump and valve mounting plate assembly is sequentially equipped with a conductivity multi-port valve 2, a dissolved oxygen multi-port valve 3, a pH multi-port valve 4, a turbidity multi-port valve 5, and corresponding conductivity peristaltic pumps 6, dissolved oxygen peristaltic pumps 7, pH peristaltic pumps 8, and turbidity peristaltic pumps 9. It also includes a turbidity gas pump and a dissolved oxygen pump. Each multi-port valve and its corresponding peristaltic pump is connected to the corresponding measuring cell through pipelines to achieve accurate delivery of verification / calibration liquid during corresponding electrode verification and calibration. An independent electrical control module is set on the back of the pump and valve mounting plate assembly. The electrical control module includes a power supply system, a communication main control board, a parameter verification control board, and an ultrasonic transducer control board. This electrical module is isolated from the front of the pump and valve assembly through the mounting plate to achieve water and electricity separation.

[0022] Furthermore, referring to Figure 3 , the main measurement cell 14 in the measurement cell assembly is made of stainless steel, and its internal structure is an independent chamber. The water inlet pipe 15 and the overflow pipe 16 are transparent and visual structures for observing the suction and overflow of the water sample. The measurement cell assembly includes a measurement cell cover 22 and a cleaning water inlet 23. Outside the measurement cell cover 22, a dissolved oxygen measurement cell liquid level detector 24, a conductivity measurement cell liquid level detector 25, a turbidity measurement cell liquid level detector 26, and a pH measurement cell liquid level detector 27 are sequentially installed. At the bottom of the measurement cell assembly, a pH measurement cell drain pinch valve 17, a turbidity measurement cell drain pinch valve 18, a conductivity measurement cell drain pinch valve 19, and a dissolved oxygen measurement cell drain pinch valve 20 are provided. The liquid level detectors and the pinch valves are linked with the measurement cell to control the liquid discharge and liquid level maintenance. Outside the measurement cell cover 22, a pH electrode 10, a turbidity electrode 11, a conductivity electrode 12, a dissolved oxygen electrode 13, and a dissolved oxygen blowing pipe 21 are installed, and their corresponding installation positions match the respective measurement cells; at the bottom of each measurement cell, a dissolved oxygen measurement cell waste liquid drain pump 29, a conductivity measurement cell waste liquid drain pump 30, a turbidity measurement cell waste liquid drain pump 31, and a pH measurement cell waste liquid drain pump 32 are respectively installed to guide the waste liquid in the corresponding measurement cell to the waste liquid collection container. On the back of the main measurement cell 14, a high-frequency ultrasonic oscillator 28 is integrated. After the measurement process ends, the ultrasonic oscillator 28 excites a cavitation effect in the liquid in the measurement cell, generating transient high-energy microjets and local shock waves to perform in-situ ultrasonic cleaning on the electrodes and the inner wall of the measurement cell to remove the biological fouling and deposits attached to the electrode surface.

[0023] It should be emphasized that referring to Figure 1 , it further includes an intelligent discrimination module. An intelligent discrimination algorithm based on response dynamics is provided in the intelligent discrimination module, which is used to automatically calculate the response time t of each electrode during the on-line detection of the quality control sample and compare it with a preset threshold: When t ≤ 60 seconds, the system operates normally; when 60 < t ≤ 90 seconds, an ultrasonic cleaning is automatically triggered and re-detection is performed; when t > 90 seconds, ultrasonic cleaning is continuously performed twice and re-measured. If it is still greater than 90 seconds after two cleanings, a cleaning warning prompt is issued through the human-machine interface. Embodiment

[0024] Water sample testing process After starting the test procedure, firstly, simultaneously open the bottom drain clamp valves 17, 18, 19, and 20 of each measuring cell to drain the residual liquid in measuring cell 14, and then close each clamp valve. Next, start the external water pump to continuously introduce water sample into the measuring cell through the inlet pipe 15. When the measuring cell is full of water sample, the excess water sample flows out from the overflow pipe 16 connected to the side wall. After a certain period of rinsing, open each drain clamp valve again to drain the water sample from the bottom of the measuring cell to complete the first cleaning. After the preset emptying time is reached, close each clamp valve. After the measuring cell is filled with water sample again, turn off the water pump to stop the water supply. Then, turn on the ultrasonic transducer 28 to eliminate air bubbles in the liquid phase. After working for a certain period of time... After a short period, turn off the ultrasonic transducer and wait approximately 10 seconds. Then, start each electrode 10, 11, 12, and 13 to test the water sample and transmit the measurement signal to the communication main control board. The test results are displayed on screen 1. After the test is completed, open each drain clamp valve to drain the water sample from the measurement pool. After draining, close each clamp valve. Then, start the external cleaning water pump to introduce water into the measurement pool from the cleaning water inlet 23 and turn on the ultrasonic transducer 28 to clean the electrodes and the measurement pool wall. After cleaning for a certain period, turn off the ultrasonic transducer. Then, open each drain clamp valve to drain the cleaning water from the measurement pool. After draining, close each clamp valve. Finally, turn off all equipment to complete the water sample testing process. Example

[0025] Standard solution calibration procedure Similar to water sample testing, but the calibration process uses corresponding standard solutions for each parameter electrode. Since measurement cell 14 is an independent compartment design, each electrode is equipped with a dedicated peristaltic pump 6-9 and a multi-way valve 2-5, with their pipelines directly connected to the corresponding measurement cell. When starting the calibration process, the instrument controls the switching of the corresponding multi-way valve channels and the start / stop of the peristaltic pump through the parameter verification control board, drawing the required standard solution into the corresponding measurement cell. The amount of standard solution injected is controlled by the level detectors 24-27 in each measurement cell. Used standard solution is pumped to a waste container by the corresponding waste liquid drainage pumps 29-32 at the bottom of each measurement cell to prevent environmental pollution. Taking pH electrode calibration as an example: The calibration process begins by first opening the pH measurement cell drain clamp valve 17 to drain the remaining liquid in the pH measurement cell. After the set time, the pH measurement cell drain clamp valve is closed. Then, valve port 1 of the pH multi-port valve 4 is opened, and the pH peristaltic pump 8 is started to introduce pure water into the pH measurement cell for cleaning. After the pH measurement cell level detector 27 detects the liquid, the pH peristaltic pump stops and valve port 1 of the pH multi-port valve is closed. The ultrasonic transducer 28 is then turned on to clean the electrodes and the inner wall of the pH measurement cell. After the set time, the ultrasonic transducer is turned off. The pH measurement cell drain clamp valve is opened to drain the cleaning liquid in the pH measurement cell and then closed. Valve port 2 of the pH multi-port valve is opened, and the pH peristaltic pump is started to introduce standard solution 1 into the pH measurement cell for rinsing. The process continues until the pH measurement is completed. After the liquid level detector detects liquid in the pH measuring cell, the pH peristaltic pump stops. The pH measuring cell waste liquid discharge pump 32 is then activated to discharge standard solution 1 from the pH measuring cell into a waste liquid tank through a waste liquid pipe connected to the bottom of the pH measuring cell. After a set time, the pH measuring cell waste liquid discharge pump is turned off. The pH peristaltic pump is then activated to introduce standard solution 1 into the pH measuring cell for calibration. After the pH measuring cell liquid level detector detects liquid, the pH peristaltic pump stops and the valve port 2 of the pH multi-way valve is closed. The electrode test signal for standard solution 1 stabilizes and the current signal value is recorded. The pH measuring cell waste liquid discharge pump is then activated to discharge standard solution 1 into the waste liquid tank along the waste liquid pipe. After a set time, the pH measuring cell waste liquid discharge pump is turned off. The valve port 1 of the pH multi-way valve is then opened, and the pH peristaltic pump is activated again to introduce pure water into the... The pH measuring tank is used for cleaning. After the pH measuring tank level detector detects liquid, the pH peristaltic pump stops and the pH multi-way valve port 1 is closed. The ultrasonic transducer is turned on to clean the electrodes and the inner wall of the pH measuring tank. After the set time, the ultrasonic transducer is turned off. The pH measuring tank drain clamp valve is opened to drain the cleaning liquid in the pH measuring tank and then closed. The pH multi-way valve port 3 is opened and the pH peristaltic pump is restarted to introduce standard solution 2 into the pH measuring tank for rinsing. After the pH measuring tank level detector detects liquid, the pH peristaltic pump stops. The pH measuring tank waste liquid drain pump is turned on to drain standard solution 2 into the waste liquid tank along the waste liquid pipe. After the set time, the pH measuring tank waste liquid drain pump is turned off. The pH peristaltic pump is turned on to introduce standard solution 2 into the pH measuring tank for standardization. Set the pH measurement tank level detector to detect liquid, then stop the pH peristaltic pump and close the pH multi-port valve. Wait for the standard solution 2 electrode test signal to stabilize and record the current signal value. The instrument's main control board calculates and saves the new electrode calibration curve based on the two recorded signal values. Start the pH measurement tank waste liquid discharge pump to discharge standard solution 2 into the waste liquid tank along the waste liquid pipe. After the set time, turn off the pH measurement tank waste liquid discharge pump. Open the pH multi-port valve and then start the pH peristaltic pump to introduce pure water into the pH measurement tank for cleaning. Wait for the pH measurement tank level detector to detect liquid, then stop the pH peristaltic pump and close the pH multi-port valve. Turn on the ultrasonic transducer to clean the electrodes and the inner wall of the pH measurement tank. After the set time, turn off the ultrasonic transducer.Open the drain clamp valve of the pH measuring tank to drain the cleaning liquid from the pH measuring tank, then close it. Open valve port 5 of the pH multi-port valve and start the pH peristaltic pump to introduce the pH electrode protective solution into the pH measuring tank. After the pH measuring tank level detector detects the liquid, stop the pH peristaltic pump and close valve port 5 of the pH multi-port valve. The pH electrode calibration process is now complete. Example

[0026] Standard solution verification process In daily use, users can check and set the instrument according to the actual situation at a frequency of hourly / daily / weekly / monthly. Regular standard solution checks are performed at the set frequency to monitor the performance of the test electrodes. If changes in electrode performance are detected, the electrodes can be recalibrated promptly to ensure their accuracy. The check and calibration procedures for each parameter electrode are basically the same, the difference being that each electrode's check procedure only performs a standard solution check test once, making the process relatively shorter. The following explanation uses the pH electrode check procedure as an example: At the beginning of the verification process, first open the drain pinch valve 17 of the pH measurement cell, drain all the remaining liquid in the pH measurement cell, close the drain pinch valve of the pH measurement cell after the set time, open the valve port 1 of the pH multi-way valve 4, and then start the pH peristaltic pump 8 to introduce pure water into the pH measurement cell for cleaning. After the liquid level detector 27 of the pH measurement cell detects the liquid, the pH peristaltic pump stops and the valve port 1 of the pH multi-way valve is closed. Then, start the ultrasonic oscillator 28 to clean the electrode and the inner wall of the pH measurement cell. After the set time, turn off the ultrasonic oscillator. Open the drain pinch valve of the pH measurement cell to drain all the cleaning liquid in the pH measurement cell and then close it. Open the valve port 4 of the pH multi-way valve and start the pH peristaltic pump to introduce the verification standard solution into the pH measurement cell for rinsing. After the liquid level detector of the pH measurement cell detects the liquid, the pH peristaltic pump stops. Open the waste liquid drain pump 32 of the pH measurement cell to drain the verification standard solution in the pH measurement cell into the waste liquid bucket through the waste liquid pipe connected to the bottom of the pH measurement cell. After the set time, close the waste liquid drain pump of the pH measurement cell. Start the pH peristaltic pump to introduce the verification standard solution into the pH measurement cell for verification. After the liquid level detector of the pH measurement cell detects the liquid, the pH peristaltic pump stops and the valve port 4 of the pH multi-way valve is closed. Wait for the electrode test signal of the verification standard solution to be stable and transmit the measurement signal to the connected communication main control board, and then display the verification result of the standard solution through the display screen. Open the waste liquid drain pump of the pH measurement cell to drain the verification standard solution along the waste liquid pipe into the waste liquid bucket. After the set time, close the waste liquid drain pump of the pH measurement cell. Open the valve port 1 of the pH multi-way valve and start the pH peristaltic pump to introduce pure water into the pH measurement cell for cleaning. After the liquid level detector of the pH measurement cell detects the liquid, the pH peristaltic pump stops and the valve port 1 of the pH multi-way valve is closed. Start the ultrasonic oscillator to clean the electrode and the inner wall of the pH measurement cell. After the set time, turn off the ultrasonic oscillator. Open the drain pinch valve of the pH measurement cell to drain all the cleaning liquid in the pH measurement cell and then close it. Open the valve port 5 of the pH multi-way valve and start the pH peristaltic pump to introduce the pH electrode protection liquid into the pH measurement cell. After the liquid level detector of the pH measurement cell detects the liquid, the pH peristaltic pump stops and the valve port 5 of the pH multi-way valve is closed. The verification process of the pH electrode ends. Example

[0027] Intelligent diagnosis During the cleaning and testing process, the system automatically evaluates the cleanliness according to the electrode response time t measured by different concentration quality control samples: if t ≤ 60 seconds, the electrode cleanliness is considered good and normal operation is maintained; if 60 < t ≤ 90 seconds, ultrasonic cleaning is automatically performed once and retested; if t > 90 seconds, ultrasonic cleaning is continuously performed twice and retested. If it is still greater than 90 seconds, a cleaning warning is issued through the human-machine interface to prompt the maintenance personnel for manual maintenance.

[0028] It should be noted that Figures 1 to 3In this context, (Ⅰ) represents the display panel assembly, (Ⅱ) represents the pump and valve mounting plate assembly, and (Ⅲ) represents the measuring cell assembly.

[0029] In addition, all components designed in this invention are general standard parts or components known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this invention does not involve improvements to the internal structure and method.

Claims

1. A multi-parameter automatic verification and measurement system for water quality, characterized in that, It includes a display panel assembly, a pump and valve mounting plate assembly, and a measuring cell assembly. The display panel assembly is used to display the operating status and operation information. The pump and valve mounting plate assembly includes a multi-way valve and a peristaltic pump for controlling the delivery of water samples or standard solutions. The measurement cell assembly includes a main measurement cell (14), electrodes, a level detector, a drain valve, a waste liquid pump, and an ultrasonic transducer (28), used to realize water sample testing, standard solution calibration and verification, and intelligent diagnosis based on response time.

2. The automatic water quality multi-parameter verification and measurement system device according to claim 1, characterized in that, The display panel assembly is equipped with a display screen (1) and a transparent observation window, which are used to display the operating status in real time and to intuitively observe the water sample entry and exit and drainage.

3. The automatic water quality multi-parameter verification and measurement system device according to claim 1, characterized in that, The pump and valve mounting plate assembly is sequentially equipped with a conductivity multi-port valve (2), a dissolved oxygen multi-port valve (3), a pH multi-port valve (4), a turbidity multi-port valve (5), and corresponding conductivity peristaltic pumps (6), dissolved oxygen peristaltic pumps (7), pH peristaltic pumps (8), and turbidity peristaltic pumps (9). It also includes a turbidity gas pump and a dissolved oxygen pump. Each multi-port valve and corresponding peristaltic pump is connected to the corresponding measuring cell through pipelines to achieve accurate delivery of verification / calibration liquid during the verification and calibration of the corresponding electrodes.

4. The automatic water quality multi-parameter verification and measurement system device according to claim 1, characterized in that, An independent electrical control module is installed on the back of the pump and valve mounting plate assembly. The electrical control module includes a power supply system, a main communication control board, a parameter verification control board, and an ultrasonic transducer control board. This electrical module is isolated from the front of the pump and valve assembly through the mounting plate to achieve water and electricity separation.

5. The automatic water quality multi-parameter verification and measurement system device according to claim 1, characterized in that, The main measuring pool (14) in the measuring pool assembly is made of stainless steel and has an independent internal structure. The inlet pipe (15) and overflow pipe (16) installed on the top of the main measuring pool (14) are transparent and visible structures for observing the suction and overflow of water samples.

6. The automatic water quality multi-parameter verification and measurement system device according to claim 1, characterized in that, The measuring pool assembly includes a measuring pool cover (22) and a cleaning water inlet (23). The measuring pool cover (22) is equipped with a dissolved oxygen measuring pool level detector (24), a conductivity measuring pool level detector (25), a turbidity measuring pool level detector (26), and a pH measuring pool level detector (27) in sequence.

7. The automatic water quality multi-parameter verification and measurement system device according to claim 1, characterized in that, The bottom of the measuring cell assembly is equipped with a pH measuring cell drain clamp valve (17), a turbidity measuring cell drain clamp valve (18), a conductivity measuring cell drain clamp valve (19), and a dissolved oxygen measuring cell drain clamp valve (20).

8. The automatic water quality multi-parameter verification and measurement system device according to claim 6, characterized in that, The measuring pool cover (22) is equipped with a pH electrode (10), a turbidity electrode (11), a conductivity electrode (12), a dissolved oxygen electrode (13), and a dissolved oxygen blowing pipe (21), the corresponding installation positions of which match each measuring pool; each measuring pool is equipped with a dissolved oxygen measuring pool waste liquid discharge pump (29), a conductivity measuring pool waste liquid discharge pump (30), a turbidity measuring pool waste liquid discharge pump (31), and a pH measuring pool waste liquid discharge pump (32), which are used to guide the waste liquid in the corresponding measuring pool to the waste liquid collection container.

9. The automatic water quality multi-parameter verification and measurement system device according to claim 1, characterized in that, A high-frequency ultrasonic oscillator (28) is integrated on the back of the main body measurement cell (14). After the measurement process is completed, the ultrasonic oscillator (28) excites a cavitation effect in the liquid in the measurement cell, generating transient high-energy microjets and local shock waves, for in-situ ultrasonic cleaning of the electrodes and the inner wall of the measurement cell, to remove biological fouling and deposits attached to the electrode surface.

10. The automatic water quality multi-parameter verification and measurement system device according to claim 1, characterized in that, It further includes an intelligent discrimination module. An intelligent discrimination algorithm based on response kinetics is provided in the intelligent discrimination module, which is used to automatically calculate the response time t of each electrode during the online detection of quality control samples and compare it with a preset threshold: When t ≤ 60 seconds, the system operates normally; when 60 < t ≤ 90 seconds, an ultrasonic cleaning is automatically triggered and redetection is performed; when t > 90 seconds, ultrasonic cleaning is continuously performed twice and retested. If it is still greater than 90 seconds after two cleanings, a cleaning warning prompt is issued through the human-machine interface.

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