An on-line detecting device for water quality of pure water

Abstract

This invention relates to an online pure water quality testing device for the field of testing. A movable frame, including two sealing discs, moves the probe tip between a detection tube and a flushing tube, facilitating automatic flushing and independent drainage of multiple different probes. This reduces residual contaminants and secondary pollution on the probes, improving testing accuracy. Simultaneously, a rotating mechanism utilizes the probe's rotation during flushing, ensuring more thorough contact between the water flow and all surfaces of the probe. The centrifugal force generated by the rotation accelerates contaminant removal, further enhancing flushing effect and efficiency. Furthermore, a calibration tube located outside the flushing tube calibrates the flushed probes. An alarm is triggered when the real-time detection value deviates significantly from the actual value of the standard solution, prompting operators to perform timely maintenance, further improving testing accuracy and maintenance timeliness.

Description

Technical Field

[0001] This invention relates to a water quality testing device, and more particularly to an online pure water quality testing device for use in the testing field. Background Technology

[0002] Online pure water quality monitoring devices integrate electrochemical and optical sensors to monitor core parameters such as pH, conductivity, and turbidity in real time. The data is transmitted to a cloud platform via a network, supporting dynamic monitoring of the water environment and is widely used in rivers, lakes, and industrial wastewater discharge outlets. However, the detection probes of existing devices are susceptible to adhesion of chemical (heavy metals, organic matter), biological (algae, bacteria), and physical (suspended particulate matter) pollutants, which interfere with electrochemical signal transmission or optical measurements, leading to inaccurate detection. At the same time, traditional disassembly and cleaning methods are time-consuming and labor-intensive, and the high-frequency maintenance requirements increase labor costs. Improper operation can also easily damage the probes.

[0003] The existing patent with publication number CN109580901B discloses an online water quality analyzer. This online water quality analyzer is equipped with five sets of flushing connectors connected to the flushing pipeline and a pure water inlet. It is also equipped with a high-level pure water valve with a horizontal height higher than the flushing connector to form a directional flushing flow channel, so as to automatically remove chemical deposits, biofilms and suspended particulate pollutants from the probe surface and maintain the detection sensitivity.

[0004] The aforementioned prior art discloses a maintenance method for cleaning the detection probe by rinsing, but it does not solve the problem that residual sewage during the probe rinsing process can easily contaminate the flow pipe of the water sample to be tested, and it also consumes a lot of water resources. Summary of the Invention

[0005] The technical problem that this invention aims to solve in response to the above-mentioned prior art is that existing online water quality monitoring instruments are prone to leaving contaminants and insufficient rinsing during probe flushing.

[0006] To address the aforementioned issues, this invention provides an online pure water quality testing device, comprising a testing tube, with multiple testing components evenly distributed circumferentially fixedly connected to the outside of the testing tube. Each testing component includes a radial tube fixedly connected to the testing tube and extending into the testing tube, with a flushing tube communicating with its inner cavity fixedly connected to the end of the radial tube away from the testing tube.

[0007] A movable frame extending to the outside of the radial tube is slidably connected inside the radial tube. A detection probe is fixedly connected to the inside of the movable frame. The movable frame includes a sealing disc 1 and a sealing disc 2 set on both sides of the detection end of the detection probe. Both sealing disc 1 and sealing disc 2 slide against the inner wall of the radial tube and are fixedly connected to each other by a number of short rods. A long rod extending to the outside of the radial tube is fixedly connected to the end of sealing disc 2 away from the short rods. A plug-in plate is fixedly connected to the end of the long rod away from sealing disc 2. The plug-in plate is connected to a radial power mechanism that drives it to move radially along the radial tube.

[0008] The right end of the flushing pipe is fixedly connected to a water injection cylinder that is fixedly sleeved on the outside of the detection tube, and a solenoid valve is fixedly connected at the connection point between the two. The left end of the flushing pipe is fixedly connected to a drain cylinder that is fixedly sleeved on the outside of the detection tube, and a one-way valve is fixedly connected at the connection point between the two. The water injection cylinder is fixedly connected to a water inlet pipe, which is connected to an external water supply mechanism. The external water supply mechanism is used to inject the standard solution into the water inlet pipe. The drain cylinder is fixedly connected to a drain pipe.

[0009] In the aforementioned online pure water quality testing device, multiple detection probes are individually rinsed by a flushing pipe and a radial power mechanism set separately on the outside of the detection pipe, which improves the rinsing effect and avoids secondary contamination of the detection probes.

[0010] As a further embodiment of this application, the radial power mechanism includes multiple sliding blocks rotatably connected to the plug-in disc. A sliding column is fixedly connected to the side wall of the sliding block, and a grooved cylinder is slidably connected to the sliding column. The grooved cylinder is rotatably sleeved on the outside of the detection tube. A gear ring is fixedly connected to the inner wall of the grooved cylinder, and the gear ring meshes with a drive gear. The drive gear is fixedly connected to the output shaft of a first motor, and the first motor is fixedly connected to the outer wall of the detection tube. A guide groove is provided on the outer wall of the grooved cylinder facing the sliding block. When the grooved cylinder rotates, the guide groove pushes the sliding column and the sliding block to move radially.

[0011] As a further embodiment of this application, the plug-in plate is connected to a rotating mechanism that drives the moving frame to rotate. The rotating mechanism includes multiple transmission shafts that are opposite to the plug-in plate. A fixed cylinder that is fixedly connected to the detection tube is rotatably connected to the upper part of the transmission shaft. A driven gear is fixedly connected to the upper end of the transmission shaft. The driven gear meshes with a gear cylinder that is rotatably connected to the fixed cylinder. A second drive gear meshes with the end of the gear cylinder away from the driven gear. The output shaft of a second motor is fixedly connected to the second drive gear. The second motor is fixedly connected to the side wall of the fixed cylinder.

[0012] As a further embodiment of this application, a calibration tube is fixedly connected to the end of the radial tube away from the flushing tube. The right end of the calibration tube is connected to the water injection cylinder, and a solenoid valve is fixedly connected at the connection point. The left end of the calibration tube is fixedly connected to the drain cylinder, and a one-way valve is fixedly connected at the connection point. Solenoid valve one, solenoid valve two, detection probe, first motor and second motor are all electrically connected to the same controller.

[0013] As a further embodiment of this application, the guide groove includes an arc-shaped groove one near the detection tube and an arc-shaped groove two located outside the arc-shaped groove one. The arc-shaped groove two and the arc-shaped groove one are concentrically arranged and interconnected. The guide groove also includes an arc-shaped groove three concentrically arranged with the arc-shaped groove two and located outside the arc-shaped groove two. The two ends of the arc-shaped groove three are respectively connected to the arc-shaped groove two and the arc-shaped groove one.

[0014] As a further embodiment of this application, a rotating disk is rotatably connected to the outer end of the radial tube away from the detection tube, and the detection probe and the long rod both move through the rotating disk.

[0015] As a further embodiment of this application, the drive shaft includes a prism shaft that engages with the plug-in disc, a prism cylinder that is slidably sleeved on the outside of the prism shaft, and a spring that abuts against the end of the prism shaft inside the prism cylinder; the sliding block is a block with an isosceles trapezoidal cross section, the end of the prism shaft near the plug-in disc is pointed and a plurality of plug-in pieces that are evenly distributed in a circle are fixedly connected to the surface of the pointed end, and the plug-in disc has a plug-in cavity that mates with the pointed end of the prism shaft.

[0016] As a further aspect of this application, the end of the radial tube located inside the detection tube is slidably fitted with an elastic cover. The elastic cover includes an open mask fitted on the outer side of the inner end of the radial tube. The open mask is cylindrical with an open outer end and has an arc-shaped through groove on its circumferential sidewall. A second spring abuts against the inner side of the open mask, and a protruding ring fixedly connected to the outer wall of the radial tube is abutted against the inner end of the second spring.

[0017] In summary, this invention utilizes a movable frame comprising two sealing discs to move the probe tip between the detection tube and the flushing tube, facilitating automatic flushing of multiple different probes. This reduces manual intervention and contaminant residue on the probes, improving detection accuracy. Furthermore, the flushing wastewater generated during the flushing process is discharged into a drain pipe through the flushing tube via the conduit formed by the sealing discs and the radial tube, ensuring separate external discharge and minimizing contamination of the sample. A calibration tube located outside the flushing tube calibrates the flushed probes, triggering an alarm when the real-time detection value significantly deviates from the standard solution value, prompting timely maintenance and improving the accuracy and timeliness of online detection. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present application;

[0019] Figure 2 This is a schematic diagram of the exploded structure of this application;

[0020] Figure 3 This is a schematic diagram of the transverse cross-sectional structure of this application;

[0021] Figure 4 This is an enlarged structural diagram of point A in Figure 3;

[0022] Figure 5 This is a schematic diagram of the assembly structure of the detection probe and the moving frame in this application;

[0023] Figure 6 This is a schematic diagram of the exploded assembly structure of the detection components and detection tubes in this application;

[0024] Figure 7 This is a schematic diagram of the assembly structure of the radial tube and the elastic cap in this application;

[0025] Figure 8 for Figure 3 Enlarged structural diagram at point B;

[0026] Figure 9 This is an exploded structural diagram of the drive shaft in this application;

[0027] Figure 10 This is a schematic diagram of the guide groove in this application;

[0028] Figure 11 This is a schematic diagram showing the state in which the probe end of the detection probe in this application extends into the detection tube;

[0029] Figure 12 This is a schematic diagram showing the probe tip of the detection probe in this application inserted into the flushing tube.

[0030] Figure 13 This is a schematic diagram of the motion state of the radial power mechanism in this application;

[0031] Figure 14 This is a schematic diagram of the motion state of the rotating mechanism in this application;

[0032] Figure 15 This is a schematic diagram showing the state of the detection probe extending into the calibration tube in this application.

[0033] Explanation of the labels in the diagram:

[0034] 1. Detection tube; 2. Detection assembly; 3. Radial tube; 301. Rotating disc; 302. Raised ring; 4. Moving frame; 401. Sealing disc one; 402. Sealing disc two; 403. Short rod; 404. Long rod; 405. Connecting disc; 406. Connecting cavity; 5. Detection probe; 6. Flushing tube; 7. Solenoid valve one; 8. Check valve one; 9. Calibration tube; 10. Solenoid valve two; 11. Check valve two; 12. Water injection cylinder; 13. Drain cylinder; 14. Inlet pipe; 15. Drain pipe; 16. Sliding block; 17. Sliding column; 18. 1801. Guide groove; 1802. Arc groove one; 1803. Arc groove two; 1804. Arc groove three; 19. Gear ring; 20. Drive gear one; 21. First motor; 22. Transmission shaft; 2201. Prismatic shaft; 2202. Prismatic cylinder; 2203. Spring one; 2204. Insert piece; 23. Driven gear; 24. Gear cylinder; 25. Drive gear two; 26. Second motor; 27. Elastic cover; 2701. Open mask; 2702. Arc through groove; 2703. Spring two; 28. Fixed cylinder. Detailed Implementation

[0035] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0036] Implementation method 1:

[0037] Figures 1-14 An online pure water quality testing device is shown, including a testing tube 1. Multiple testing components 2 are fixedly connected to the outside of the testing tube 1 and are evenly distributed in a circle. The testing components 2 include a radial tube 3 that is fixedly connected to the testing tube 1 and extends into the testing tube 1. A flushing tube 6 that communicates with the inner cavity of the radial tube 3 is fixedly connected to the end of the radial tube 3 away from the testing tube 1.

[0038] Please see Figure 4 and Figure 5 A movable frame 4 extending to the outside of the radial tube 3 is slidably connected inside the radial tube 3. A detection probe 5 is fixedly connected to the inside of the movable frame 4. The movable frame 4 includes a first sealing plate 401 and a second sealing plate 402 disposed on both sides of the detection end of the detection probe 5. Both the first sealing plate 401 and the second sealing plate 402 slide against the inner wall of the radial tube 3 and are fixedly connected to each other by a plurality of short rods 403. A long rod 404 extending to the outside of the radial tube 3 is fixedly connected to the end of the second sealing plate 402 away from the short rods 403. A plug plate 405 is fixedly connected to the end of the long rod 404 away from the second sealing plate 402. The plug plate 405 is connected to a radial power mechanism that drives it to move radially along the radial tube 3. The radial power mechanism drives the movable frame 4 to move radially inside the radial tube 3, so that the detection end of the detection probe 5 fixed on the movable frame 4 moves from inside the detection tube 1 to the connection between the flushing tube 6 and the radial tube 3.

[0039] Please see Figure 4and Figure 6 The right end of the flushing pipe 6 is fixedly connected to a water injection cylinder 12 that is fixedly sleeved on the outside of the detection pipe 1, and a solenoid valve 7 is fixedly connected at the connection point between the two. The left end of the flushing pipe 6 is fixedly connected to a drain cylinder 13 that is fixedly sleeved on the outside of the detection pipe 1, and a one-way valve 8 is fixedly connected at the connection point between the two. The water injection cylinder 12 is fixedly connected to an inlet pipe 14, which is connected to an external water supply mechanism. The external water supply mechanism is used to inject the standard solution into the inlet pipe 14. The drain cylinder 13 is fixedly connected to a drain pipe 15. The external water supply mechanism injects the standard solution into the water injection cylinder 12 through the inlet pipe 14. After the standard solution passes through the solenoid valve 7, it is injected into the flushing pipe 6. Then, the detection end of the detection probe 5 located at the connection point between the flushing pipe 6 and the radial pipe 3 is flushed. The wastewater generated by flushing is discharged into the drain cylinder 13 through the one-way valve 8, and then discharged through the drain pipe 15.

[0040] It should be noted that when the sealing disc 401 and the sealing disc 402 move to the connection point between the flushing pipe 6 and the radial pipe 3, the conductive cavity enclosed by the sealing disc 401, the sealing disc 402 and the radial pipe 3 communicates with the inner cavity of the flushing pipe 6. The detection probe 5 in the circumferentially distributed detection assembly 2 is one of the following: pH probe, conductivity probe, and dissolved oxygen probe. In addition, the standard solution refers to pure water with known purity. Those skilled in the art can select the appropriate type of probe according to the needs of pure water detection, which will not be elaborated further in this application.

[0041] Compared to traditional online water quality monitoring equipment, this invention uses a movable frame 4, including a first sealing plate 401 and a second sealing plate 402, to move the detection end of the detection probe 5 between the detection tube 1 and the flushing tube 6. This facilitates flushing of multiple different detection probes 5, reduces the residue of pollutants on the detection probes 5, and improves the accuracy of detection. At the same time, through the guiding cavity enclosed by the first sealing plate 401, the second sealing plate 402, and the radial tube 3, the wastewater generated during flushing is discharged into the drain cylinder 13 through the flushing tube 6, allowing for separate discharge of the flushing wastewater and reducing the contamination of the water sample to be tested.

[0042] Please see Figure 4 , Figure 8 and Figure 13The radial power mechanism includes multiple sliding blocks 16 rotatably connected to the plug-in plate 405. A sliding column 17 is fixedly connected to the side wall of the sliding block 16. A groove cylinder 18 is slidably connected to the sliding column 17. The groove cylinder 18 is rotatably sleeved on the outside of the detection tube 1. A toothed ring 19 is fixedly connected to the inner wall of the groove cylinder 18. The toothed ring 19 meshes with a drive gear 20. The drive gear 20 is fixedly connected to the output shaft of the first motor 21. The first motor 21 is fixedly connected to the outer wall of the detection tube 1. A guide groove 1801 is provided on the outer wall of the groove cylinder 18 facing the sliding block 16. When the groove cylinder 18 rotates, the guide groove 1801 pushes the sliding column 17 and the sliding block 16 to move radially. The sliding block 16 drives the moving frame 4 to move radially.

[0043] Specifically, the first motor 21 drives the gear ring 19 to rotate through the drive gear 20, the gear ring 19 drives the groove cylinder 18 to rotate, the guide groove 1801 pushes the sliding column 17 and the sliding block 16 to move radially, the sliding block 16 drives the moving frame 4 to move radially, the moving frame 4 drives the detection probe 5 to move radially, thereby moving the detection end of the detection probe 5 to the connection between the flushing pipe 6 and the radial pipe 3.

[0044] Please see Figure 10 The guide groove 1801 includes an arc-shaped groove 1802 near the detection tube 1 and an arc-shaped groove 2 1803 located outside the arc-shaped groove 1802. The arc-shaped groove 2 1803 and the arc-shaped groove 1802 are concentrically arranged and interconnected.

[0045] Specifically, when the sliding column 17 slides in the arc-shaped groove 1802, the detection end of the detection probe 5 of the detection component 2 corresponding to the sliding column 17 is located in the detection tube 1. When the sliding column 17 slides into the arc-shaped groove 1803, the detection end of the detection probe 5 corresponding to the sliding column 17 is located in the rinsing tube 6. As the groove cylinder 18 makes a circular motion, the detection ends of the detection probes 5 of each detection component 2 enter the rinsing tube 6 independently, so as to realize the independent rinsing of each detection probe 5.

[0046] Please see Figure 8 and Figure 14 The plug-in plate 405 is connected to a rotating mechanism that drives the moving frame 4 to rotate. The rotating mechanism includes multiple drive shafts 22 that are opposite to the plug-in plate 405. A fixed cylinder 28 that is fixedly connected to the detection tube 1 is rotatably connected to the upper part of the drive shaft 22. A driven gear 23 is fixedly connected to the upper end of the drive shaft 22. The driven gear 23 meshes with a gear cylinder 24 that is rotatably connected to the fixed cylinder 28. A second drive gear 25 meshes with the end of the gear cylinder 24 that is away from the driven gear 23. The output shaft of the second motor 26 is fixedly connected to the second drive gear 25. The second motor 26 is fixedly connected to the side wall of the fixed cylinder 28.

[0047] Specifically, when the sliding column 17 moves into the arc-shaped groove 1803, the drive shaft 22 is inserted into the connector plate 405. The second motor 26 drives the drive gear 25 to rotate. The drive gear 25 drives the driven gear 23 to rotate through the gear cylinder 24. The driven gear 23 drives the connector plate 405 to rotate through the drive shaft 22, which in turn drives the moving frame 4 and the detection probe 5 on it to rotate. When rinsing the detection probe 5, the moving frame 4 drives the detection probe 5 to rotate, so that the water flow fully contacts all surfaces of the detection end of the detection probe 5. The centrifugal force of the detection probe 5 during rotation accelerates the separation of pollutants from the detection probe 5, improving the cleaning effect of pollutant rinsing.

[0048] Please see Figure 4 and Figure 6 The radial tube 3 is rotatably connected to the outer end away from the detection tube 1 by a rotating disk 301, and the detection probe 5 and the long rod 404 both move through the rotating disk 301.

[0049] Specifically, the stability of the moving frame 4 during radial movement and rotation is improved by rotating the disk 301.

[0050] Please see Figure 8 and Figure 9 The drive shaft 22 includes a prism shaft 2201 that is engaged with the insertion plate 405. A prism cylinder 2202 is slidably sleeved on the outside of the prism shaft 2201. A spring 2203 is provided inside the prism cylinder 2202 that abuts against the end of the prism shaft 2201.

[0051] Specifically, the prism shaft 2201 is kept extended to the outside of the prism tube 2202 under the action of the spring 2203, so that the prism shaft 2201 can be inserted into the connector 405.

[0052] Please see Figure 5 and Figure 9 The sliding block 16 is a cube with an isosceles trapezoidal cross section. The end of the prism shaft 2201 near the plug-in plate 405 is pointed and the pointed surface is fixedly connected with a number of plug-in pieces 2204 evenly distributed in a circle. The plug-in plate 405 has a plug-in cavity 406 that mates with the pointed end of the prism shaft 2201.

[0053] Specifically, as the sliding column 17 slides from the first arc groove 1802 to the second arc groove 1803, the prism shaft 2201 extends outward under the action of the first spring 2203 and slides along the surface of the sliding block 16, and then inserts into the insertion cavity 406 of the insertion plate 405, thereby realizing the engagement of the prism shaft 2201 with the insertion plate 405. As the groove cylinder 18 rotates, the drive shaft 22 engages with and disengages from the insertion plates 405 of each detection component 2.

[0054] The second implementation method:

[0055] Figure 4, Figure 6 , Figure 7 , Figure 10 , Figure 15 An online pure water quality testing device is shown. Based on the first embodiment, a calibration tube 9 is fixedly connected to the end of the radial tube 3 away from the flushing tube 6. The right end of the calibration tube 9 is connected to the water injection cylinder 12, and a solenoid valve 2 10 is fixedly connected at the connection point between the two. The left end of the calibration tube 9 is fixedly connected to the drain cylinder 13, and a one-way valve 2 11 is fixedly connected at the connection point between the two. The solenoid valve 1 7, the solenoid valve 2 10, the detection probe 5, the first motor 21, and the second motor 26 are all electrically connected to the same controller.

[0056] Specifically, after the probe end of the detection probe 5 is rinsed in the rinsing tube 6, the probe end of the detection probe 5 is moved to the calibration tube 9 by a radial power mechanism. Then, a standard solution is injected into the calibration tube 9 through an external water supply mechanism. The detection probe 5 detects the standard solution injected into the calibration tube 9. When the difference between the detected value and the actual value of the standard solution (pure water with known parameters) is greater than the set difference threshold, the controller issues an alarm to remind the operator to perform maintenance. It should be noted that the controller is connected to the computer in the remote control room, and the alarm is existing technology, which will not be elaborated here. In addition, it should be noted that the actual value of the standard solution is known, and there are many reasons for the large difference between the detected value and the actual value detected by the detection probe 5, including but not limited to damage to the detection probe 5, or the rinsing method being unable to clean the stubborn residual contaminants on the surface of the detection probe 5. Therefore, manual inspection is required. Furthermore, the detection probe 5 is tested in the calibration tube 9 to eliminate the possibility that residual contaminants in the rinsing tube 6 may affect the detection results.

[0057] Compared to traditional online water quality monitoring devices, this invention uses a calibration tube 9 located outside the rinsing pipe 6 to calibrate the detection probe 5 after rinsing. When the real-time detection value differs significantly from the actual value of the standard solution, an alarm is triggered to remind operators to perform timely maintenance, thereby improving the detection accuracy and maintenance timeliness of the online monitoring instrument.

[0058] Please see Figure 10 The guide groove 1801 also includes an arc groove 3 1804 that is concentrically arranged with the arc groove 2 1803 and located outside the arc groove 2 1803. The two ends of the arc groove 3 1804 are connected to the arc groove 2 1803 and the arc groove 1 1802, respectively.

[0059] Specifically, when the sliding column 17 moves into the arc groove 1804, the detection end of the detection probe 5 of the detection component 2 corresponding to the sliding column 17 moves into the calibration tube 9.

[0060] Please see Figure 4 and Figure 6The end of the radial tube 3 located inside the detection tube 1 is slidably fitted with an elastic cover 27. The elastic cover 27 includes an open mask 2701 fitted on the outer side of the inner end of the radial tube 3. The open mask 2701 is a cylindrical shape with an open outer end and an arc-shaped through groove 2702 is provided on its circumferential side wall. A second spring 2703 is abutted on the inner side of the open mask 2701. The inner end of the second spring 2703 abuts on a protruding ring 302 that is fixedly connected to the outer wall of the radial tube 3.

[0061] Specifically, during the process of the detection probe 5 being inserted into the detection tube 1, the sealing disc 401 squeezes the open mask 2701, causing the spring 2703 to be compressed until the arc-shaped through groove 2702 on the open mask 2701 is connected to the inner cavity of the detection tube 1. The water sample flows through the arc-shaped through groove 2702 and then through the detection end of the detection probe 5. During rinsing and calibration testing, under the action of the spring 2703, the open mask 2701 seals the inner end of the radial tube 3 to prevent the water sample from entering the radial tube 3 and contaminating the rinsing tube 6.

[0062] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. An online pure water quality testing device, characterized in that, The device includes a detection tube (1), and a plurality of detection components (2) are fixedly connected to the outside of the detection tube (1) in a circumferentially evenly distributed manner. The detection component (2) includes a radial tube (3) fixedly connected to the detection tube (1) and extending into the detection tube (1). The end of the radial tube (3) away from the detection tube (1) is fixedly connected to a flushing tube (6) communicating with its inner cavity. A movable frame (4) extending to the outside of the radial tube (3) is slidably connected inside the radial tube (3). A detection probe (5) is fixedly connected to the inside of the movable frame (4). The movable frame (4) includes a sealing disc one (401) and a sealing disc two (402) disposed on both sides of the detection end of the detection probe (5). Both the sealing disc one (401) and the sealing disc two (402) slide against the inner wall of the radial tube (3) and are fixedly connected to each other by a plurality of short rods (403). A long rod (404) extending to the outside of the radial tube (3) is fixedly connected to the end of the sealing disc two (402) away from the short rods (403). A plug-in plate (405) is fixedly connected to the end of the long rod (404) away from the sealing disc two (402). The disc (405) is connected to a radial power mechanism that drives it to move radially along the radial tube (3); the radial power mechanism includes multiple sliding blocks (16) that are rotatably connected to the plug-in disc (405), a sliding column (17) is fixedly connected to the side wall of the sliding block (16), a groove cylinder (18) is slidably connected to the sliding column (17), the groove cylinder (18) is rotatably sleeved on the outside of the detection tube (1), and a guide groove (1801) is provided on the outer wall of the groove cylinder (18) facing the sliding block (16). When the groove cylinder (18) rotates, the guide groove (1801) pushes the sliding column (17) and the sliding block (16) to move radially; the plug-in disc (405) is connected to a rotation mechanism that drives the moving frame (4) to rotate; The right end of the flushing pipe (6) is fixedly connected to a water injection cylinder (12) that is fixedly sleeved on the outside of the detection pipe (1), and a solenoid valve (7) is fixedly connected at the connection between the two. The left end of the flushing pipe (6) is fixedly connected to a drain cylinder (13) that is fixedly sleeved on the outside of the detection pipe (1), and a one-way valve (8) is fixedly connected at the connection between the two. The water injection cylinder (12) is fixedly connected to a water inlet pipe (14), which is connected to an external water supply mechanism. The external water supply mechanism is used to inject the standard solution into the water inlet pipe (14). The drain cylinder (13) is fixedly connected to a drain pipe (15).

2. The online pure water quality testing device according to claim 1, characterized in that, A toothed ring (19) is fixedly connected to the inner wall of the groove (18), and a drive gear (20) meshes with the toothed ring (19). The output shaft of the first motor (21) is fixedly connected to the drive gear (20), and the first motor (21) is fixedly connected to the outer wall of the detection tube (1).

3. The online pure water quality testing device according to claim 2, characterized in that, The rotating mechanism includes multiple drive shafts (22) that are arranged opposite to the plug-in plate (405). The upper part of the drive shaft (22) is rotatably connected to a fixed cylinder (28) that is fixedly connected to the detection tube (1). The upper end of the drive shaft (22) is fixedly connected to a driven gear (23). The driven gear (23) meshes with a gear cylinder (24) that is rotatably connected to the fixed cylinder (28). The end of the gear cylinder (24) away from the driven gear (23) meshes with a second drive gear (25). The second drive gear (25) is fixedly connected to the output shaft of a second motor (26). The second motor (26) is fixedly connected to the side wall of the fixed cylinder (28).

4. The online pure water quality testing device according to claim 3, characterized in that, The radial tube (3) is fixedly connected to a calibration tube (9) at one end away from the flushing tube (6). The right end of the calibration tube (9) is connected to the water injection cylinder (12), and a solenoid valve (10) is fixedly connected at the connection point. The left end of the calibration tube (9) is fixedly connected to a drain cylinder (13), and a one-way valve (11) is fixedly connected at the connection point. The solenoid valve (7), the solenoid valve (10), the detection probe (5), the first motor (21), and the second motor (26) are all electrically connected to the same controller.

5. The online pure water quality testing device according to claim 4, characterized in that, The guide groove (1801) includes an arc-shaped groove one (1802) near the detection tube (1) and an arc-shaped groove two (1803) located outside the arc-shaped groove one (1802). The arc-shaped groove two (1803) and the arc-shaped groove one (1802) are concentrically arranged and interconnected. The guide groove (1801) also includes an arc-shaped groove three (1804) concentrically arranged with the arc-shaped groove two (1803) and located outside the arc-shaped groove two (1803). The two ends of the arc-shaped groove three (1804) are respectively connected to the arc-shaped groove two (1803) and the arc-shaped groove one (1802).

6. The online pure water quality testing device according to claim 3, characterized in that, The radial tube (3) is rotatably connected to a rotating disk (301) at its outer end away from the detection tube (1), and the detection probe (5) and the long rod (404) both move through the rotating disk (301).

7. The online pure water quality testing device according to claim 3, characterized in that, The drive shaft (22) includes a prism shaft (2201) that engages with the plug-in plate (405). A prism cylinder (2202) is slidably sleeved on the outside of the prism shaft (2201). A spring (2203) is provided inside the prism cylinder (2202) that abuts against the end of the prism shaft (2201). The sliding block (16) is a block with an isosceles trapezoidal cross section. The end of the prism shaft (2201) near the plug-in plate (405) is pointed and a plurality of plug-in pieces (2204) are fixedly connected to the pointed surface. The plug-in plate (405) has a plug-in cavity (406) that engages with the pointed end of the prism shaft (2201).

8. The online pure water quality testing device according to claim 4, characterized in that, The radial tube (3) is slidably fitted with an elastic cover (27) at the end inside the detection tube (1). The elastic cover (27) includes an open mask (2701) fitted on the outer side of the inner end of the radial tube (3). The open mask (2701) is cylindrical with an open outer end and has an arc-shaped through groove (2702) on its circumferential side wall. A second spring (2703) abuts against the inner side of the open mask (2701). A protruding ring (302) is fixedly connected to the outer wall of the radial tube (3) at the inner end of the second spring (2703).

Images