Multi-parameter water quality detection device for flushing water supply pipeline

Abstract

The utility model provides a multi-parameter water quality detection device for flushing a water supply pipeline, which belongs to the field of water quality detection devices and comprises a telescopic pipeline connecting mechanism and a detection mechanism, wherein the pipeline connecting mechanism is of a conical structure, is provided with a large opening end and a small opening end, and is adaptive to pipelines with different diameters through different stretching depths of water supply pipelines, so that sealing connection is realized; the detection mechanism is connected with the pipeline connecting mechanism through a water inlet pipe and is provided with a containing cavity, a conductivity detector and a pH value detector are arranged in the containing cavity, the conductivity detector and the pH value detector are connected in series and are provided with a parallel water inlet controller and a series water inlet controller, a check valve is arranged on the first guide pipe, and it is ensured that water flow passes through the conductivity detector and the pH value detector in a one-way mode. The pipeline connecting device solves the technical problems that in the prior art, a pipeline connecting device is poor in adaptability, a saturated potassium chloride solution in a calomel electrode for detecting the pH value possibly flows back to a conductivity detector, consequently, a conductivity measurement result is deviated, and the detection precision is affected.

Description

Technical Field

[0001] The utility model belongs to the field of automatic preparation devices for detection solutions, in particular to a multi-parameter water quality detection device for flushing water supply pipelines. Background Art

[0002] Pipe flushing is a critical operation in water supply network maintenance, primarily used to remove accumulated sediment within the pipes, prevent water quality degradation, and ensure that the water delivered to end users meets national standards. Currently, water supply companies generally perform regular flushing of older pipes that pose potential safety hazards, based on the age of the cast iron pipes and the distribution of pipe network terminals. Furthermore, flushing is also performed during emergency repairs or replacements following a burst pipe to ensure consistent water quality after supply is restored.

[0003] Existing water supply network flushing technology primarily relies on on-site inspectors to test multiple parameters, such as residual chlorine, turbidity, color, and conductivity, to verify flushing effectiveness. Although some testing equipment can provide multi-parameter testing capabilities, the entire process is still largely manual, with inspectors stationed at downstream sampling points in the pipeline, determining the frequency of sampling and testing based on experience. This approach not only increases labor costs but also presents the following problems:

[0004] Accuracy issues: During flushing tests, when both conductivity and pH need to be measured simultaneously, the saturated potassium chloride solution used in the calomel electrode used to measure pH may flow back through the outlet pipe into the conductivity meter, causing deviations in the conductivity measurement and affecting test accuracy. This phenomenon is difficult to completely avoid in practice and may lead to inaccurate assessments of flushing effectiveness.

[0005] Applicability Issues: Existing pipe connection devices are typically only suitable for pipes of a specific diameter and lack adaptability. When connecting pipes of varying diameters, they are inconvenient to operate, impacting flushing efficiency. Therefore, existing devices still lack adaptability and convenience.

[0006] In summary, the existing water supply network flushing technology has certain limitations in terms of detection accuracy and device applicability, and urgently needs to be improved to increase the degree of automation of the detection process and the versatility of the device, so as to improve the overall efficiency of pipeline flushing and the level of water quality assurance. Utility Model Content

[0007] The details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent.

[0008] The utility model proposes a multi-parameter water quality detection device for flushing water supply pipes, which solves the technical problems in the prior art such as poor adaptability of pipe connection devices and the possibility that saturated potassium chloride solution in a calomel electrode for detecting pH value may flow back into a conductivity detector, resulting in deviation in conductivity measurement results and affecting detection accuracy. The utility model has the characteristics of high versatility in adapting to pipes of different diameters, high-precision detection that prevents backflow of detection liquid, and convenient automated operation.

[0009] The utility model discloses a multi-parameter water quality detection device for flushing water supply pipes, comprising:

[0010] A retractable pipe connection mechanism, which has a tapered structure with a large end and a small end. The water supply pipe is gradually extended from the large end to the small end. The pipe connection mechanism can adapt to water supply pipes of different diameters by varying the depth of the water supply pipe, thereby achieving a sealed connection.

[0011] The detection mechanism is connected to the pipeline connecting mechanism through a water inlet pipe. The detection mechanism is provided with a accommodating chamber, and the accommodating chamber includes: a conductivity detector and a pH detector connected to the pipeline connecting mechanism through the water inlet pipe. When the water quality detection indicators include both conductivity and pH value, the water inlet pipe is connected to the conductivity detector, and a parallel water inlet controller is provided at the connection point. The conductivity detector and the pH detector are connected in series through a first conduit. A series water inlet controller is provided at the connection point between the first conduit and the pH detector. A check valve is provided on the first conduit to ensure that water flows unidirectionally through the conductivity detector and the pH detector.

[0012] In some embodiments, the accommodating chamber also includes a turbidity detector, a colorimeter, a residual chlorine detector and a temperature detector connected in parallel with each other; wherein the turbidity detector, colorimeter, residual chlorine detector and temperature detector are connected to the water inlet pipe through a second conduit, and a parallel water inlet controller is provided at each connection point, and the other end of the conductivity detector, pH value detector, turbidity detector, colorimeter, residual chlorine detector and temperature detector is connected to the water outlet pipe, and a parallel water outlet controller is provided at the connection point between the conductivity detector and the water outlet pipe.

[0013] In some embodiments, when the water quality detection indicator includes only one of conductivity or pH value, the conductivity detector and the pH detector are connected in parallel through a third conduit, and a parallel water inlet controller is provided at one end of the third conduit connected to the pH detector.

[0014] In some embodiments, a front filter and a wastewater conduit are further included. The front filter is arranged upstream of the water inlet pipe and between the pipeline connecting mechanism and the detection mechanism. The wastewater conduit is connected to the front filter for discharging the water sample after detection.

[0015] In some embodiments, the accommodating chamber also includes a flow controller and a flow meter. The flow controller is arranged after the front filter and is used to control the water sample flow. The flow meter is arranged on the pipeline between the flow controller and each detector and is used to monitor the water sample flow in real time.

[0016] In some embodiments, a PLC controller is further included. The PLC controller is embedded above the detection mechanism. The PLC controller is connected to each detector through a signal line to control the working status of each detector.

[0017] In some embodiments, the PLC controller includes:

[0018] PLC display panel, connected to the PLC controller via a signal line, is used to display the test data;

[0019] The PLC keypad is connected to the PLC controller via a signal line and is used to set parameters.

[0020] In some embodiments, a printing device is further included. The printing device is embedded above the detection mechanism, and the outlet of the printing device is located above the detection mechanism. The printing device is connected to the PLC controller via a data cable for printing a detection report.

[0021] In some of the embodiments, a roller is further included, which is installed at the bottom of the detection mechanism to facilitate the movement and installation of the detection mechanism.

[0022] In some embodiments, the accommodating cavity further includes a power supply device, which provides a stable power supply to each detector, flow meter, PLC controller and printing device through a cable.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The multi-parameter water quality detection device for flushing water supply pipes disclosed in the present utility model realizes the detection of multiple water quality parameters of the water supply pipe through the synergistic effect of a retractable pipe connection mechanism and a detection mechanism. The pipe connection mechanism adopts a conical structure with a large end and a small end, and can be adapted to water supply pipes of various diameters through different insertion depths of the water supply pipe, thereby ensuring the versatility and sealing performance of the detection device. The accommodating cavity configured in the detection mechanism can effectively accommodate a variety of detection devices such as conductivity detectors, pH value detectors, turbidity detectors, colorimeter detectors, residual chlorine detectors and temperature detectors, thereby realizing the simultaneous monitoring of multiple parameters of water quality.

[0025] 2. During the detection process, when the water quality detection indicators include both conductivity and pH value, the conductivity detector and the pH detector are connected in series through a first conduit, and a check valve is provided to ensure unidirectional water flow, thereby avoiding backflow interference during the detection process and improving data accuracy. When only one parameter, conductivity or pH value, is to be detected, the relevant detection instruments can be connected in parallel through a third conduit, and a water inlet controller can be provided to adjust the water inlet flow rate, thereby achieving a flexible detection configuration. The turbidity, color, residual chlorine, and temperature detectors in the accommodating chamber are connected to the water inlet pipe through a second conduit, realizing multi-channel detection of water samples and improving detection efficiency.

[0026] 3. The utility model sets a pre-filter upstream of the water inlet pipe to filter out large particles of impurities to protect the normal operation of the detection instrument. The wastewater conduit is connected to the pre-filter to discharge the tested water sample in a timely manner, avoiding the accumulation of water samples affecting the accuracy of subsequent test results. In order to further control and monitor the flow of water samples, the device also includes a flow controller and a flow meter. The flow controller is set after the pre-filter and can adjust the water sample flow as needed. The flow meter is installed on the pipe between each detection instrument to monitor the flow data in real time, providing an important reference for the test results.

[0027] 4. In terms of automated control, the detection device of this utility model integrates a PLC controller, which is connected to each detection instrument via signal lines, enabling automatic collection of detection parameters and remote control of detection status. The display panel equipped with the PLC controller displays various test data in real time, and the detection parameters can be set and adjusted via a keypad to meet different testing requirements. To further enhance ease of use, the detection device also includes a printer, which is connected to the PLC controller via a data cable and is used to generate and print test reports, facilitating the recording and tracing of water quality data.

[0028] 5. The roller structure on the bottom of this utility model facilitates the movement and installation of the equipment, meeting the flexible deployment requirements of different testing scenarios. The power supply system is connected to the various testing instruments, flow meters, PLC controllers and printing equipment via cables, providing stable power support to ensure the reliability and continuous operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0030] Figure 1 A schematic structural diagram of a multi-parameter water quality detection device for flushing water supply pipes provided by an embodiment of the present utility model;

[0031] Figure 2 A top view of a multi-parameter water quality detection device for flushing water supply pipes provided by an embodiment of the present utility model;

[0032] In the above figures: pipeline connection mechanism 1; water inlet pipe 2; conductivity detector 3; pH value detector 4; parallel water inlet controller 5; first conduit 6; series water inlet controller 7; check valve 8; turbidity detector 9; colorimetry detector 10; residual chlorine detector 11; temperature detector 12; second conduit 13; third conduit 14; water outlet pipe 15; parallel water outlet controller 16; pre-filter 17; wastewater conduit 18; flow controller 19; flow meter 20; PLC controller 21; PLC display panel 2101; PLC keypad 2102; printing device 22; roller 23; power supply equipment 24; drain pipe 25. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0034] The present invention provides a multi-parameter water quality detection device for flushing water supply pipes. Figure 1-Figure 2As shown, the device comprises at least a retractable pipe connection mechanism 1 and a detection mechanism. The pipe connection mechanism 1 is designed as a conical structure with a large end and a small end, and is used to connect water supply pipes of different diameters. The water supply pipe can be inserted into the small end of the mechanism at different insertion depths, thereby achieving a sealed connection with the device. The detection mechanism is connected to the pipe connection mechanism 1 via a water inlet pipe 2. The detection mechanism is provided with a housing chamber, which contains a conductivity detector 3 and a pH detector 4. When the water quality test indicators include both conductivity and pH value, the water inlet pipe 2 is connected to the conductivity detector 3, and the inflow of water samples is controlled by a parallel water inlet controller 5. The conductivity detector 3 and the pH detector 4 are connected in series via a first conduit 6, and a series water inlet controller 7 is provided at the connection between the first conduit 6 and the pH detector 4. To ensure that water flows in one direction through the conductivity detector 3 and the pH detector 4, a check valve 8 is provided on the first conduit 6. This device utilizes the conical design of the pipe connection mechanism 1 to adapt to water supply pipes of varying diameters. As the water sample flows from the water supply pipe into the detection mechanism, the sample flow rate is regulated by a parallel water inlet controller 5 located at the junction of the water inlet pipe 2 and the conductivity meter 3. The water sample first enters the conductivity meter 3 for conductivity testing, then flows through a first conduit 6 to the pH meter 4 for pH testing. A check valve 8 ensures unidirectional flow of the water sample between the two meters 3 and 4, thereby improving the accuracy and stability of the test data. The device's retractable pipe connection mechanism 1 allows for adaptability to pipes of varying diameters, enabling stable application in a variety of water supply pipe systems. Furthermore, the check valve 8, parallel water inlet controller 5, and serial water inlet controller 7 not only control the sample flow rate but also effectively prevent backflow, enhancing detection reliability. Furthermore, serially testing conductivity and pH improves detection efficiency, ensuring that multiple water quality parameters can be obtained from a single water sample inflow.

[0035] In some embodiments, the pipe connection mechanism 1 employs a retractable design to accommodate water supply pipes of varying diameters and facilitate portability. After completing a water quality test, the user can retract the pipe connection mechanism 1, reducing the device's size and making it easier to move. When a new round of water quality testing is required, the pipe connection mechanism 1 can be retracted to the appropriate length to match the diameter of the water supply pipe being tested, ensuring a leak-tight connection and stability.

[0036] In some embodiments, when the detection device is used for a small-diameter water supply pipe, the water supply pipe can gradually extend from the large-mouth end of the pipe connecting mechanism 1 into the small-mouth end. However, the water flow may become turbulent due to the narrowing of the diameter when passing through the small-mouth end, affecting the stability of the water sample. To solve this problem, a drain pipe 25 is also connected to the end of the water inlet pipe 2 near the pipe connecting mechanism 1, and a control valve is provided on the drain pipe 25. When the water flow is too large and the flow rate is unstable, a portion of the water sample can be discharged from the drain pipe 25 by opening the control valve, thereby slowing down the water flow rate entering the detection mechanism. This design can effectively maintain the stability of the flow rate and pressure of the water sample, ensuring the accuracy of the water quality detection data.

[0037] Furthermore, the accommodating cavity includes a turbidity detector 9, a colorimetry detector 10, a residual chlorine detector 11 and a temperature detector 12. These detectors are connected in parallel and connected to the water inlet pipe 2 through a second conduit 13. A parallel water inlet controller 5 is provided at the connection between each detector and the water inlet pipe 2, which is used to individually control the water intake of each detector. In addition, the water outlet ends of these detectors are connected to the water outlet pipe 15, which is used to discharge the water after detection. This embodiment connects a variety of detectors in parallel so that water samples can flow into different detectors at the same time to detect parameters such as turbidity, colorimetry, residual chlorine and temperature. The water intake of each detector is individually controlled by the parallel water inlet controller 5 to avoid mutual influence of water samples and ensure the accuracy of the detection data. The utility model realizes simultaneous detection of multiple parameters in a parallel manner, thereby improving the detection efficiency. The setting of the parallel water inlet controller 5 ensures the stability of the water sample flow rate and pressure of the detector, thereby improving the reliability of the detection data. In this way, users can obtain multiple parameters of water quality efficiently and accurately, effectively improving the application scope and flexibility of water quality detection devices.

[0038] In some embodiments, when the water quality test indicators include both conductivity and pH, the water sample first passes through the conductivity tester 3 to complete the conductivity test, then flows into the pH tester 4 for pH test, and is discharged from the outlet pipe 15 after the test is completed. At this time, to ensure that the water flows smoothly along the set path, a parallel water outlet controller 16 is provided at the connection between the conductivity tester 3 and the outlet pipe 15. At this time, the parallel water outlet controller 16 is turned off to prevent the water sample from being directly discharged from the outlet of the conductivity tester 3; at the same time, the pH tester 4 turns off its parallel water inlet controller 5 and turns on the series water inlet controller 7, ensuring that the water sample passes through the conductivity tester 3 and the pH tester 4 in sequence, realizing the series test of conductivity and pH value. This design not only effectively controls the water flow path, but also ensures the stability of the test sequence, improving the test accuracy and ease of operation.

[0039] Furthermore, when the water quality detection index only includes one of conductivity or pH value, the conductivity detector 3 and the pH value detector 4 are connected in parallel through the third conduit 14, and a parallel water inlet controller 5 is provided at one end of the third conduit 14 connected to the pH value detector 4 to adapt to the flow control during single parameter detection. When only a single parameter is detected, the third conduit 14 connects the conductivity detector 3 and the pH value detector 4 in parallel, and the parallel water inlet controller 5 controls the water sample to enter the required detector respectively, and the unselected detector does not pass water, avoiding unnecessary water flow into and improving detection efficiency. Through this design, the detection items can be flexibly selected, unnecessary energy consumption can be avoided, and the detection items can be quickly switched when needed. The parallel water inlet controller 5 is used to achieve flexible adjustment, ensuring the controllability of the water sample inflow and the high efficiency during single detection.

[0040] Furthermore, the multi-parameter water quality detection device for flushing the water supply pipe also includes a pre-filter 17 and a wastewater conduit 18. The pre-filter 17 is arranged at the upstream position of the water inlet pipe 2, between the pipe connection mechanism 1 and the detection mechanism. The pre-filter 17 is used to preliminarily filter the water sample to prevent impurities from entering the detection mechanism and affecting the detection accuracy. The wastewater conduit 18 is connected to the pre-filter 17 and is used to discharge water samples containing large particles and impurities. Before entering the detection mechanism, the water sample is preliminarily filtered through the pre-filter 17 to remove larger particles and impurities to ensure that it will not be interfered with by pollutants during subsequent detection. The water sample containing large particles and impurities is discharged to the designated wastewater treatment system or discharge port through the wastewater conduit 18; the setting of the pre-filter 17 effectively extends the service life of the detection equipment and avoids wear or blockage of the detection equipment caused by impurities.

[0041] Furthermore, the accommodating chamber also includes a flow controller 19 and a flow meter 20. The flow controller 19 is arranged after the front filter 17 and is used to control the flow of the water sample. The flow meter 20 is arranged on the pipeline between the flow controller 19 and each detector to monitor the flow of the water sample entering the detector in real time. The flow controller 19 adjusts the inflowing water sample to achieve flow control of the water sample before entering each detector, ensuring that the flow of the water sample in each detector is stable and within the appropriate range. The flow meter 20 is used to measure the flow of water samples in real time, helping users to monitor the current water flow conditions, and feed back data to the flow controller 19 so as to accurately control the flow according to actual needs. The combined application of the flow controller 19 and the flow meter 20 effectively controls the water flow in the detection system, thereby improving the accuracy and reliability of the detection. Real-time monitoring of the flow enables users to detect flow anomalies in a timely manner and make adjustments, ensuring the operational stability of the detection device under various working conditions and reducing detection errors.

[0042] Furthermore, the multi-parameter water quality detection device for flushing water supply pipes also includes a PLC controller 21, which is embedded above the detection mechanism and connected to each detector through a signal line to control the working state of each detector. The PLC controller 21 serves as the central control unit of the detection system. It connects each detector through a signal line, centrally controls and adjusts the working state of each detector, and ensures the synchronization of each detection parameter. The PLC controller 21 is capable of receiving and processing feedback information from each detector, and executing corresponding control strategies to achieve intelligent management of the detection process. The provision of the PLC controller 21 significantly improves the automation and intelligence level of the device, making the entire detection process more efficient and reliable. By centrally controlling the working state of each detector, the PLC controller 21 not only reduces human operation errors, but also improves the system response speed, thereby greatly improving the accuracy and ease of operation of the detection device.

[0043] Furthermore, the PLC controller 21 includes a PLC display panel 2101 and a PLC keypad 2102. The PLC display panel 2101 is connected to the PLC controller 21 via a signal line for displaying detection data in real time, and the PLC keypad 2102 is used to set and adjust detection parameters. The PLC display panel 2101 displays the detection data of each detector in real time, allowing users to monitor changes in water quality in real time and quickly identify anomalies. The PLC keypad 2102 provides a parameter setting function, allowing users to adjust detection parameters according to actual needs, thereby optimizing the detection effect. The configuration of the PLC display panel 2101 and the PLC keypad 2102 enhances the interactivity between the user and the detection system, allowing users to intuitively understand the detection status and adjust parameters in a timely manner, significantly improving the operability and applicability of the device.

[0044] In some embodiments, a touch screen control can be used instead of the PLC keypad 2102 and the PLC display panel 2101 to make the user interface more user-friendly and intuitive. The touch screen display can also integrate more functions, such as chart display, data storage, and historical record query, to further enhance the intelligence level of the entire detection device.

[0045] Furthermore, a printing device 22 is provided above the detection mechanism. The outlet of the printing device 22 is located above the detection mechanism and is connected to the PLC controller 21 via a data cable for printing a test report. The PLC controller 21 transmits the test data to the printing device 22, which outputs the test report according to the set format, providing a physical record to facilitate the preservation and tracing of the test data. The provision of the printing device 22 enables users to directly obtain the test report, facilitates the preservation of test data and subsequent water quality analysis, and enhances the record management capabilities of the detection device. This configuration is particularly suitable for scenarios where long-term preservation and tracking of water quality changes are required.

[0046] Furthermore, rollers 23 are provided at the bottom of the detection mechanism to facilitate the movement and installation of the detection device. The provision of rollers 23 allows the detection device to be easily moved to the desired location before use and removed after the test is complete, facilitating flexible deployment and use of the device. The design of rollers 23 increases the device's portability and is particularly suitable for testing scenarios that require frequent movement, such as when conducting water quality testing at multiple water supply points. The provision of rollers 23 also reduces the manpower required during movement, improving ease of use.

[0047] Furthermore, the accommodating cavity also includes a power supply device 24, which provides a stable power supply to each detector, flow meter 20, PLC controller 21 and printing device 22 through cables. The power supply device 24 provides continuous and stable power to each component of the device to ensure the normal operation of the detection device, especially to maintain the continuous operation of the system during long-term or multi-task detection. The integrated setting of the power supply device 24 ensures the stable operation of the entire detection system, avoids power interruptions that may be caused by an external power supply, and improves the reliability of the device. This configuration makes the device suitable for outdoor or fixed power supply conditions, which increases the application range of the device.

[0048] The working process of this multi-parameter water quality detection device for flushing water supply pipes is as follows:

[0049] After the multi-parameter water quality detection device for flushing the water supply pipe is sealed and connected to the water supply pipe through the retractable pipe connection mechanism 1, the water sample is first preliminarily filtered, and then the water sample flow rate is adjusted by the flow controller 19 to enter the detection mechanism. When the water quality detection indicators include both conductivity and pH value, the water sample is sequentially tested in series through the conductivity detector 3 and the pH detector 4: the water sample first passes through the conductivity detector 3, then enters the pH detector 4, and is discharged from the outlet pipe 15 after completing both tests, ensuring that the data is accurate and the flow direction is controlled in an orderly manner. When only conductivity or pH value needs to be tested, the device controls the flow direction through parallel pipes so that the water sample enters a designated single detector, simplifying the testing process and reducing water sample waste. In addition, the detection of other parameters (such as turbidity, color, residual chlorine, temperature) is carried out simultaneously through parallel branches, and the real-time data is transmitted to the PLC controller 21 and displayed on the PLC display panel 2101, making it convenient for users to monitor the water quality status and output reports through the printing device 22. After the test is completed, the water sample is discharged through the water outlet pipe 15. At this time, the pipe connecting mechanism 1 can be retracted to facilitate movement and subsequent use.

[0050] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A multi-parameter water quality detection device for flushing water supply pipes, characterized in that: include: A retractable pipe connection mechanism, which has a tapered structure with a large end and a small end. The water supply pipe is gradually extended from the large end to the small end. The pipe connection mechanism can adapt to water supply pipes of different diameters by varying the depth of the water supply pipe, thereby achieving a sealed connection. The detection mechanism is connected to the pipeline connecting mechanism through a water inlet pipe. The detection mechanism is provided with a accommodating chamber, and the accommodating chamber includes: a conductivity detector and a pH detector connected to the pipeline connecting mechanism through the water inlet pipe. When the water quality detection indicators include both conductivity and pH value, the water inlet pipe is connected to the conductivity detector, and a parallel water inlet controller is provided at the connection point. The conductivity detector and the pH detector are connected in series through a first conduit. A series water inlet controller is provided at the connection point between the first conduit and the pH detector. A check valve is provided on the first conduit to ensure that water flows unidirectionally through the conductivity detector and the pH detector.

2. The multi-parameter water quality detection device for flushing water supply pipes according to claim 1 is characterized in that: The accommodating chamber also includes a turbidity detector, a colorimeter, a residual chlorine detector and a temperature detector connected in parallel with each other; wherein the turbidity detector, colorimeter, residual chlorine detector and temperature detector are connected to the water inlet pipe through a second conduit, and each connection point is provided with a parallel water inlet controller, the other end of the conductivity detector, pH value detector, turbidity detector, colorimeter, residual chlorine detector and temperature detector is connected to the water outlet pipe, and a parallel water outlet controller is provided at the connection point between the conductivity detector and the water outlet pipe.

3. The multi-parameter water quality detection device for flushing water supply pipes according to claim 1, characterized in that: When the water quality detection index includes only one of conductivity or pH value, the conductivity detector and the pH detector are connected in parallel through a third conduit, and a parallel water inlet controller is provided at one end of the third conduit connected to the pH detector.

4. The multi-parameter water quality detection device for flushing water supply pipes according to claim 1, characterized in that: It also includes a front filter and a wastewater conduit. The front filter is arranged at the upstream position of the water inlet pipe and between the pipeline connecting mechanism and the detection mechanism. The wastewater conduit is connected to the front filter for discharging the water sample after detection.

5. The multi-parameter water quality detection device for flushing water supply pipes according to claim 4, characterized in that: The accommodating chamber also includes a flow controller and a flow meter. The flow controller is arranged after the front filter and is used to control the water sample flow. The flow meter is arranged on the pipeline between the flow controller and each detector and is used to monitor the water sample flow in real time.

6. The multi-parameter water quality detection device for flushing water supply pipes according to claim 5, characterized in that: It also includes a PLC controller, which is embedded above the detection mechanism. The PLC controller is connected to each detector through a signal line and is used to control the working state of each detector.

7. The multi-parameter water quality detection device for flushing water supply pipes according to claim 6, characterized in that: The PLC controller includes: PLC display panel, connected to the PLC controller via a signal line, is used to display the test data; The PLC keypad is connected to the PLC controller via a signal line and is used to set parameters.

8. The multi-parameter water quality detection device for flushing water supply pipes according to claim 6, characterized in that: It also includes a printing device, which is embedded above the detection mechanism. The outlet of the printing device is located above the detection mechanism. The printing device is connected to the PLC controller via a data line and is used to print the detection report.

9. The multi-parameter water quality detection device for flushing water supply pipes according to any one of claims 1 to 8, characterized in that: It also includes a roller, which is installed at the bottom of the detection mechanism to facilitate the movement and installation of the detection mechanism.

10. The multi-parameter water quality detection device for flushing water supply pipes according to claim 8, characterized in that: The accommodating cavity also includes a power supply device, which provides a stable power supply to each detector, flow meter, PLC controller and printing device through cables.

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