Rapid water quality detection equipment and detection method

Abstract

The invention relates to the technical field of detection equipment, in particular to rapid water quality detection equipment and a detection method, and the rapid water quality detection equipment comprises a detection barrel, a partition plate, a guide pipe, a turbidity detector, a sealing mechanism, a lifting driving mechanism and a flushing mechanism. The detection barrel is divided into an upper calibration cavity and a lower detection cavity, and is matched with the lifting driving mechanism to drive the turbidity detector to move between the calibration cavity and the detection cavity, so that a set of complete'calibration-flushing-detection-flushing 'automatic process is constructed. Calibration and detection processes can be automatically and continuously completed, manual operation is not needed in the whole process, the problems that manual calibration steps are tedious and errors are prone to occurring are solved, the calibration cavity and the detection cavity are cleaned in time through the flushing mechanism, residual impurities are prevented from affecting the detection result, and continuity, high efficiency and accuracy of water quality detection are ensured. In addition, when the rapid water quality detection method is used for detection, the detection efficiency is high, and the detection result is more accurate.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, specifically to a rapid water quality testing device and testing method. Background Technology

[0002] Water pollution is one of the major challenges facing environmental protection today. Effective monitoring of pollution sources, precise control of pollution processes, and evaluation of treatment effects all rely on efficient and reliable monitoring and detection technologies. Among these technologies, turbidity, as a fundamental and crucial physical indicator characterizing the content of suspended particulate matter in water, is an important parameter for assessing water pollution detection levels, tracking pollution spread, and optimizing pollution control and treatment processes (such as the efficiency of coagulation, sedimentation, and filtration units). Therefore, rapid and accurate detection of water turbidity is of great significance for achieving refined management of the water environment and closed-loop control of pollution treatment processes. Current turbidity detection mainly employs optical methods, which involve emitting a light beam into a water sample and calculating the turbidity value by measuring the intensity of the light scattered by particulate matter in the water.

[0003] After prolonged use, turbidity detectors can drift due to factors such as optical component aging and environmental changes, leading to increased measurement errors. To achieve accurate measurements, turbidity detectors require periodic calibration with standard solutions. However, existing turbidity detection equipment requires manual calibration, which is not only cumbersome and inefficient, but also highly susceptible to human error during the calibration process, resulting in inaccurate calibration and directly affecting the reliability of subsequent test results. Furthermore, impurities can easily accumulate on the optical window of the turbidity detector over long-term use, interfering with light propagation and scattering, thus generating erroneous detection signals and resulting in low accuracy. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes a rapid water quality testing device and method, which solves the problems of cumbersome operation of existing testing devices, error-prone manual calibration, and low accuracy of testing results, and has higher testing efficiency and more accurate testing results.

[0005] The present invention provides a rapid water quality testing device and method, which adopts the following technical solution, wherein the rapid water quality testing device includes: Testing bucket; A partition is fixedly connected inside the testing chamber, dividing it into upper and lower chambers. The chamber above the partition is the calibration chamber, and the chamber below the partition is the testing chamber. The side wall of the calibration chamber is connected to an inlet pipe and an outlet pipe, with the outlet pipe at the same height as the bottom wall of the calibration chamber. The bottom of the testing chamber is connected to an infusion pipe. The guide tube extends vertically and is fixedly connected to the partition, with its upper end extending into the calibration chamber and its lower end extending into the detection chamber. The turbidity detector is installed in the guide tube and slides up and down; a detection head is provided at its lower end; a connecting rod is fixedly connected to the lower end of the turbidity detector. The sealing mechanism includes a sealing cover and a sealing ring. The sealing cover is fixedly connected to the lower end of the connecting rod. There are two sealing rings. One sealing ring is located on the lower side wall of the turbidity detector to seal the gap between the turbidity detector and the guide tube. The other sealing ring is located on the side wall of the sealing cover to seal the gap between the sealing cover and the guide tube. The lifting drive mechanism is used to drive the turbidity detector to slide up and down within a preset range. During the sliding process of the turbidity detector, at least one sealing ring is sealed to the guide tube. The rinsing mechanism is used to rinse the detection chamber and calibration chamber.

[0006] Optionally, a cleaning mechanism is provided at the lower end of the turbidity detector, which is used to clean the detection head and guide tube of the turbidity detector.

[0007] Optionally, the cleaning mechanism includes N scrapers, which are evenly distributed around the circumference of the connecting rod. The scrapers are vertically arranged and extend radially along the connecting rod, with their inner sides rotatably mounted on the connecting rod. The upper end of the scraper abuts against the turbidity detector, and the outer end abuts against the inner wall of the guide tube. In the initial state, the detection head is located between two scrapers. Optionally, the rinsing mechanism includes a rinsing tank and a waste liquid tank; an installation cavity is provided in the partition, and the installation cavity is connected to an injection pipe and a drain pipe; two adjacent scrapers define the sensing cavity; N flow channels are provided in the partition, each corresponding to one of the N sensing cavities, the flow channels extend radially along the detection barrel, one end of the flow channel is connected to the installation cavity, and the other end is connected to the sensing cavity.

[0008] Optionally, the N flow channels include two large flow channels and N-2 small flow channels. The width of the large flow channels in the horizontal direction is greater than the width of the small flow channels in the horizontal direction. The two large flow channels are respectively directly opposite the injection pipe and the drainage pipe. A switching ring is installed in the mounting cavity. The switching ring is coaxially arranged with the detection tank and is rotatably installed in the mounting cavity within a preset angle range. The switching ring has N-2 infusion holes. Two sensing plates are arranged on the side of the switching ring facing the injection pipe. The two sensing plates are distributed vertically and are inclined. The sensing plates have a preset angle with the vertical plane, and the inclination directions of the two sensing plates are opposite. When one sensing plate is subjected to force, it drives the switching ring to rotate clockwise. When the other sensing plate is subjected to force, it drives the switching ring to rotate counterclockwise. In the initial state, the infusion holes are blocked, and the liquid can only flow to the large flow channel facing the injection pipe. After the switching ring rotates in the reverse direction by a preset angle, the N-2 infusion holes are directly opposite the N-2 small flow channels, and the liquid can flow to all large flow channels and all small flow channels. The injection tube is connected to a switching valve, which includes one inlet and two outlets. The two outlets are distributed vertically, with their heights equal to those of the two sensing plates. The cleaning mechanism also includes a reset assembly, which is used to ensure that the N scrapers tend to be evenly distributed along the circumference of the connecting rod.

[0009] Optionally, the reset assembly includes a support ring and multiple reset springs; the support ring is coaxially arranged with the connecting rod and passes through N scrapers in sequence; the multiple reset springs are evenly distributed along the circumference of the connecting rod, the reset springs are arc-shaped, fitted onto the support ring, and the two ends of the reset springs abut against two scrapers respectively, so that the two scrapers tend to maintain a preset included angle.

[0010] Optionally, the cleaning mechanism also includes an auxiliary positioning component for keeping the N scrapers in a preset phase.

[0011] Optionally, the auxiliary positioning component includes N first magnetic strips and N second magnetic strips. The N first magnetic strips are fixedly installed at the lower ends of the N scrapers. The N second magnetic strips are evenly distributed along the circumference of the sealing cover and fixedly connected to the upper surface of the sealing cover. The magnetic poles at the lower ends of the first magnetic strips are opposite to the magnetic poles at the upper ends of the second magnetic strips.

[0012] Optionally, a buffer plate is fixedly connected inside the detection chamber; the buffer plate is located at the lower part of the detection chamber, and a buffer tube is fixedly connected to the upper surface of the buffer plate. The lower part of the buffer tube is a cone shape with a large opening facing downwards; the radius of the upper part of the buffer tube is equal to the distance between the outer end face of the scraper and the axis of the connecting rod; multiple through holes are opened in the buffer plate opposite to the buffer tube; the lower end of the scraper is spiral.

[0013] Furthermore, this invention also provides a rapid water quality testing method, which uses the rapid water quality testing equipment provided by this invention to test water quality, including the following steps: S1: Inject standard solution into the calibration chamber; S2: The lifting drive mechanism moves the turbidity detector upward until the detection head contacts the standard solution, detects the turbidity of the standard solution, and calibrates the value on the turbidity detector to the turbidity value of the standard solution. S3: Use the rinsing mechanism to rinse the calibration chamber and the turbidity detector located in the calibration chamber; S4: The lifting drive mechanism moves the turbidity detector downwards until the detection head reaches the detection chamber; S5: Inject the test liquid into the detection chamber, and the turbidity detector detects the turbidity value of the test liquid; S6: Use the rinsing mechanism to rinse the detection chamber and the turbidity detector located in the detection chamber.

[0014] The beneficial effects of this invention are as follows: The rapid water quality testing device provided by this invention divides the testing tank into upper and lower chambers—a calibration chamber and a testing chamber—and, in conjunction with a lifting drive mechanism, moves the turbidity detector up and down, constructing a complete automated "calibration-rinsing-testing-rinsing" process. It can automatically and continuously complete the calibration and testing process, and after calibration and testing, it completes the rinsing of the corresponding chambers. The entire process requires no manual operation, solving the problems of cumbersome and error-prone manual calibration steps, improving testing efficiency. Furthermore, the rinsing mechanism promptly cleans the calibration and testing chambers, preventing residual impurities in the testing chamber from affecting the accuracy of the test results, ensuring the continuity, efficiency, and accuracy of water quality testing.

[0015] Furthermore, this invention incorporates a rinsing mechanism and a cleaning mechanism. After testing and calibration are completed, the rinsing fluid enters the mounting cavity through the injection pipe, flows into the sensing cavity through the flow channel, and then into the calibration or testing cavity to rinse it. This removes residual standard solution, rinsing fluid, or test solution. The rinsing fluid's power causes a scraper to rotate, scraping away contaminants from the detection head and the inner wall of the guide tube, eliminating the need for additional power consumption. This prevents residual liquid and contaminants from affecting subsequent testing and calibration, further ensuring testing accuracy.

[0016] Furthermore, by setting up a buffer plate and a buffer tube, the liquid to be tested enters the buffer chamber before entering the detection chamber, preventing the water from flowing too fast into the detection chamber and damaging the rapid water quality testing equipment. After the buffer chamber is filled with liquid, it enters the buffer tube through the through hole. Under the guidance of the spiral scraper, the liquid to be tested rotates and flows, generating turbulence. The air bubbles in the liquid to be tested are eliminated, preventing the mixing of gas into the liquid to generate air bubbles, avoiding optical interference caused by air bubbles to turbidity detection, and ensuring the accuracy of the test results.

[0017] This invention also provides a rapid water quality testing method, which uses the rapid water quality testing equipment provided by this invention to test the water quality; the entire process requires no manual operation, has high testing efficiency, and high testing accuracy. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of a rapid water quality testing device according to the present invention; Figure 2This is a side view of the testing tank and its internal structure in a rapid water quality testing device of the present invention; Figure 3 for Figure 2 Explosion diagram of the middle structure; Figure 4 This invention provides a rapid water quality testing device in the state of cleaning the testing chamber. Figure 2 Sectional view of section AA; Figure 5 This invention provides a rapid water quality testing device in the state of cleaning the testing chamber. Figure 4 Sectional view of section BB; Figure 6 This invention provides a rapid water quality testing device in the state of cleaning the testing chamber. Figure 5 Sectional view of the C-section; Figure 7 This is a schematic diagram of the switching ring in a rapid water quality testing device of the present invention; Figure 8 This is a schematic diagram of the cleaning mechanism in a rapid water quality testing device of the present invention; Figure 9 for Figure 8 Sectional view of section DD; Figure 10 This is an exploded structural diagram of the cleaning mechanism in a rapid water quality testing device of the present invention; Figure 11 This invention provides a rapid water quality testing device in the state of cleaning the guide tube. Figure 2 Sectional view of section AA; Figure 12 This invention provides a rapid water quality testing device in the state of cleaning the guide tube. Figure 5 Sectional view of the C-section; Figure 13 This invention provides a rapid water quality testing device in the state of cleaning the calibration chamber. Figure 2 Sectional view of section AA; Figure 14 This invention provides a rapid water quality testing device in the state of cleaning the calibration chamber. Figure 5 Sectional view of the C-section; Figure 15 for Figure 13 Enlarged view of section X in the middle.

[0020] In the picture: 100. Test container; 101. End cap; 110. Calibration chamber; 111. Inlet pipe; 112. Drain pipe; 120. Test chamber; 121. Infusion pipe; 130. Buffer plate; 131. Through hole; 140. Buffer tube; 200. Partition; 210. Mounting cavity; 211. Large baffle; 212. Small baffle; 220. Large flow channel; 230. Small flow channel; 240. Switching ring; 241. Limiting plate; 242. Infusion port; 243. Sensing plate; 250. Switching valve; 251. Inlet; 252. Outlet; 300. Guide tube; 400. Turbidity detector; 410. Detection head; 420. Connecting rod; 500. Sealing mechanism; 510. Sealing cover; 520. Sealing ring; 600. Lifting drive mechanism; 700. Flushing mechanism; 710. Flushing tank; 711. Liquid injection pipe; 720. Waste liquid tank; 721. Sewage pipe; 800. Cleaning mechanism; 810. Scraper; 811. Sensing cavity; 820. Reset assembly; 821. Support ring; 822. Reset spring; 830. Auxiliary positioning assembly; 831. First magnetic strip; 832. Second magnetic strip; 900. Testing cabinet. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] This invention provides a rapid water quality testing device and method, wherein an embodiment of the rapid water quality testing device is as follows: Figures 1 to 15 As shown, the rapid water quality testing equipment includes a testing tank 100, a partition 200, a guide tube 300, a turbidity detector 400, a sealing mechanism 500, a lifting drive mechanism 600, and a rinsing mechanism 700.

[0023] An end cap 101 is detachably and fixedly connected to the upper end of the test barrel 100.

[0024] A partition 200 is fixedly connected to the inside of the test chamber 100, dividing the test chamber 100 into upper and lower chambers. The chamber above the partition 200 is the calibration chamber 110, and the chamber below the partition 200 is the test chamber 120. The side wall of the calibration chamber 110 is connected to an inlet pipe 111 and an outlet pipe 112, with the outlet pipe 112 being at the same height as the bottom wall of the calibration chamber 110. The upper surface of the partition 200 is inclined, with the end closer to the outlet pipe 112 being lower than the end farther from the outlet pipe 112. An infusion pipe 121 is connected to the bottom of the test chamber 120.

[0025] The guide tube 300 extends vertically and is fixedly connected to the partition 200, with its upper end extending into the calibration chamber 110 and its lower end extending into the detection chamber 120.

[0026] The turbidity detector 400 is slidably installed inside the guide tube 300; a detection head 410 is provided at its lower end; a connecting rod 420 is fixedly connected to the lower end of the turbidity detector 400.

[0027] The sealing mechanism 500 includes a sealing cover 510 and a sealing ring 520. The sealing cover 510 is fixedly connected to the lower end of the connecting rod 420. There are two sealing rings 520. One sealing ring 520 is located on the lower side wall of the turbidity detector 400 to seal the gap between the turbidity detector 400 and the guide tube 300. The other sealing ring 520 is located on the side wall of the sealing cover 510 to seal the gap between the sealing cover 510 and the guide tube 300.

[0028] The lifting drive mechanism 600 is used to drive the turbidity detector 400 to slide up and down within a preset range. During the sliding process of the turbidity detector 400, at least one sealing ring 520 is sealed to the guide tube 300.

[0029] The rinsing mechanism 700 is used to rinse the detection chamber 120 and the calibration chamber 110.

[0030] The lifting drive mechanism 600 is a hydraulic rod, one end of which is connected to the turbidity detector 400. The lifting drive mechanism 600 can also be a drive motor. The upper end of the turbidity detector 400 is rotatably connected to the drive rod, and the other end of the drive rod is connected to the drive motor. The drive rod and the end cover 101 are screwed together so that when the drive motor drives the drive rod to rotate, the drive rod causes the turbidity detector 400 to move up and down.

[0031] During use, standard solution is injected into calibration chamber 110 through inlet pipe 111; turbidity detector 400 is moved upward by lifting drive mechanism 600 until detection head 410 contacts standard solution, turbidity of standard solution is detected, and the value on turbidity detector 400 is calibrated to the turbidity value of standard solution; rinsing mechanism 700 is used to rinse calibration chamber 110 and turbidity detector 400 located in calibration chamber 110, and waste liquid flows out through drain pipe 112; lifting drive mechanism 600 is moved downward by turbidity detector 400 until detection head 410 reaches detection chamber 120; test solution is injected into detection chamber 120, and turbidity detector 400 detects turbidity value of test solution; rinsing mechanism 700 is used to rinse detection chamber 120 and turbidity detector 400 located in detection chamber 120.

[0032] This invention divides the detection tank 100 into upper and lower chambers, and uses a lifting drive mechanism 600 to move the turbidity detector 400 up and down. This allows for the automatic and continuous completion of the calibration and detection process. After calibration and detection, the corresponding chambers are rinsed. The entire process requires no manual operation, solving the problem of inaccurate manual calibration. The operation steps are simple, the detection efficiency is high, and the detection accuracy is high.

[0033] In a further embodiment, a cleaning mechanism 800 is provided at the lower end of the turbidity detector 400. The cleaning mechanism 800 is used to clean the detection head 410 and guide tube 300 of the turbidity detector 400.

[0034] The cleaning mechanism 800 includes N scrapers 810, which are evenly distributed around the circumference of the connecting rod 420. The scrapers 810 are vertically arranged and extend radially along the connecting rod 420, with their inner sides rotatably mounted on the connecting rod 420. The upper end of the scraper 810 abuts against the turbidity detector 400, and the outer end abuts against the inner wall of the guide tube 300. In the initial state, the detection head 410 is located between two scrapers 810. In the illustrated embodiment, the cleaning mechanism 800 includes four scrapers 810. By setting the scrapers 810, when the scrapers 810 are impacted by the water flow, the scrapers 810 rotate around the axis of the connecting rod 420. The upper end of the scraper 810 scrapes away the impurities attached to the detection head 410, and the outer end of the scraper 810 cleans the inner wall of the guide tube 300, avoiding the impact of residual impurities on the subsequent detection accuracy, thereby ensuring detection precision.

[0035] In a further embodiment, the rapid water quality testing equipment also includes a testing cabinet 900; a rinsing mechanism 700 includes a rinsing tank 710 and a waste liquid tank 720; an installation cavity 210 is provided in the partition 200, and the installation cavity 210 is connected to an injection pipe 711 and a drain pipe 721; the injection pipe 711 is connected to the rinsing tank 710, which is filled with rinsing liquid (such as deionized water), and the drain pipe 721 is connected to the waste liquid tank 720, which is used to store waste liquid; the testing barrel 100, the rinsing tank 710, and the waste liquid tank 720 are all installed in the testing cabinet 900; two adjacent scrapers 810 define a sensing cavity 811; multiple flow channels are provided in the partition 200, the number of flow channels being equal to the number of scrapers 810, and the multiple flow channels correspond to multiple sensing cavities 811 respectively, with one end of the flow channel connected to the installation cavity 210 and the other end connected to the sensing cavity 811.

[0036] This invention incorporates a rinsing mechanism 700. After testing and calibration are completed, the rinsing fluid enters the mounting cavity 210 via the injection pipe 711. The rinsing fluid then flows into the sensing cavity 811 through the flow channel, and subsequently into the calibration cavity 110 or the detection cavity 120. This rinsing process cleans the scraper 810, the guide tube 300, and the calibration cavity 110 or the detection cavity 120, thereby removing any residual standard liquid, rinsing fluid, or test liquid. This prevents residual liquid from affecting subsequent testing and calibration, further ensuring testing accuracy.

[0037] In a further embodiment, the N flow channels include two large flow channels 220 and N-2 small flow channels 230. The width of the large flow channels 220 in the horizontal direction is greater than the width of the small flow channels 230 in the horizontal direction. The two large flow channels 220 are respectively directly opposite the injection pipe 711 and the drain pipe 721. A switching ring 240 is installed in the mounting cavity 210. The switching ring 240 is coaxially arranged with the detection tank 100, and the switching ring 240 is rotatably installed in the mounting cavity 210 within a preset angle range. (Refer to...) Figure 12 , Figure 14Two limiting plates 241 are fixedly connected to the peripheral wall of the switching ring 240; four baffles are fixedly connected inside the mounting cavity 210, including two large baffles 211 and two small baffles 212; the four baffles are divided into two groups, one group consisting of one large baffle 211 and one small baffle 212, corresponding to the two limiting plates 241 respectively, with the limiting plate 241 located between the corresponding large baffle 211 and small baffle 212; when the limiting plate 241 abuts against the large baffle 211, a sealed partition is formed; when the limiting plate 241 abuts against the small baffle 212, both of them are closed to the mounting cavity. There are gaps between the inner walls of the 210 for liquid flow; the switching ring 240 has N-2 infusion holes 242, corresponding to N-2 small flow channels 230 respectively; two sensing plates 243 are arranged on the side of the switching ring 240 facing the injection tube 711, the two sensing plates 243 are distributed vertically, the sensing plates 243 are inclined, the sensing plates 243 have a preset angle with the vertical plane, and the inclination directions of the two sensing plates 243 are opposite; when one sensing plate 243 is subjected to force, it drives the switching ring 240 to rotate clockwise, and when the other sensing plate 243 is subjected to force, it drives the switching ring 240 to rotate clockwise. The switching ring 240 reverses to a preset angle; the switching ring 240 has two small-diameter sections, the diameter of which is smaller than that of other sections; the two small-diameter sections are respectively aligned with the injection pipe 711 and the drain pipe 721, thus forming an annular flow channel with the inner wall of the mounting cavity 210; during the rotation of the switching ring 240, the two flow channels are always connected to the two large flow channels 220, thus ensuring that the two large flow channels 220 are always connected to the injection pipe 711 and the drain pipe 721 respectively; in the initial state, the infusion hole 242 is in a blocked state, and the limiting plate 241 and the large baffle 21 are in a blocked state. When the liquid is in contact with the large baffle 211 and the limiting plate 241, it cannot pass through the large baffle 211 and the limiting plate 241 to reach the guide channel facing the drain pipe 721. At this time, the liquid can only flow to the large flow channel 220 facing the injection pipe 711. After the switching ring 240 rotates in the opposite direction by a preset angle, N-2 infusion holes 242 face N-2 small flow channels 230. The limiting plate 241 abuts against the small baffle 212. The liquid can reach the guide channel facing the drain pipe 721 through the gap between the small baffle 212 and the mounting cavity 210. At this time, the liquid can flow to all large flow channels 220 and all small flow channels 230.

[0038] The injection tube 711 is connected to a switching valve 250, which includes an input port 251 and two output ports 252. The two output ports 252 are distributed vertically and their heights are equal to those of the two sensing plates 243. The cleaning mechanism 800 also includes a reset assembly 820, which is used to ensure that the N scrapers 810 tend to be evenly distributed along the circumference of the connecting rod 420.

[0039] The reset assembly 820 includes a support ring 821 and multiple reset springs 822. The support ring 821 is coaxially arranged with the connecting rod 420 and passes through N scrapers 810 in sequence. The multiple reset springs 822 are evenly distributed along the circumference of the connecting rod 420. The reset springs 822 are arc-shaped and fitted onto the support ring 821. The two ends of the reset springs 822 abut against two scrapers 810 respectively, so that the two scrapers 810 tend to maintain a preset included angle.

[0040] When the detection chamber 120 needs to be flushed, the sensing chamber 811 is connected to the detection chamber 120. At this time, the switching valve 250 is opened, connecting one of the output ports 252 and the input port 251. The flushing fluid entering through the input port 251 flows through the output port 252 into the mounting chamber 210 and then into the large flow channel 220 directly opposite it. When the flushing fluid passes the sensing plate 243 at this height, it provides a thrust to the sensing plate 243, pushing the switching ring 240 to rotate in the opposite direction by a preset angle, so that the infusion port 242 is directly opposite the small flow channel 220. 30. The limiting plate 241 abuts against the small baffle 212. Liquid can reach the guide channel opposite the drain pipe 721 through the gap between the small baffle 212 and the installation cavity 210. The installation cavity 210 is filled with liquid. The flushing liquid in the installation cavity 210 flows to the small flow channel 230 and the large flow channel 220 through the infusion hole 242 and the guide channel. Then it enters multiple sensing cavities 811 and enters the detection cavity 120 through the scraper 810 to flush the detection cavity 120. The waste liquid is discharged through the infusion pipe 121.

[0041] When the calibration chamber 110 needs to be flushed, the sensing chamber 811 is connected to the calibration chamber 110. At this time, the switching valve 250 is opened, connecting one of the output ports 252 and the input port 251. The flushing fluid entering through the input port 251 flows into the mounting chamber 210 through the output port 252 and then into the large flow channel 220 directly opposite it. When the flushing fluid passes the sensing plate 243 at this height, it provides a thrust to the sensing plate 243, pushing the switching ring 240 to rotate in the opposite direction by a preset angle, so that the infusion port 242 is directly opposite the small flow channel 230. The limiting plate 241 abuts against the small baffle 212. Liquid can reach the guide channel opposite the drain pipe 721 through the gap between the small baffle 212 and the mounting cavity 210. The mounting cavity 210 is filled with liquid. The flushing liquid in the mounting cavity 210 flows to the small flow channel 230 and the large flow channel 220 through the infusion hole 242 and the guide channel. Then it enters multiple sensing cavities 811 and enters the calibration cavity 110 through the scraper 810 to flush the calibration cavity 110. The waste liquid is discharged through the drain pipe 721 and the infusion pipe 121.

[0042] When the guide tube 300 needs to be flushed, the drain pipe 721 is closed and the injection pipe 711 is opened, so that both sealing rings 520 are sealed to the guide tube 300. The sensing chamber 811 is separated from the calibration chamber 110 and the detection chamber 120. At this time, the switching valve 250 is opened, so that another output port 252 is connected to the input port 251. At this time, the flushing fluid entering through the input port 251 flows to the installation chamber 210 through the output port 252 and flows to the large flow channel 220 directly opposite it. When the flushing fluid passes the sensing plate 243 at this height, it gives the sensing plate 243 a thrust, pushing the switching ring 240 to rotate forward by a preset angle. At this time, the infusion hole 242 is blocked, and the limiting plate 241 abuts against the large baffle 211. The two sets of large baffles 211 and limiting plates 241 divide the installation chamber 210 into two chambers, and the two chambers are respectively The flushing fluid is connected to two guide channels. The flushing fluid fills the chamber connected to the injection pipe 711, but cannot flow to the chamber connected to the drain pipe 721. The flushing fluid in the installation chamber 210 can only flow to the large flow channel 220 through the guide channel facing the inlet 251, and enter the sensing chamber 811 directly opposite it. As the flushing fluid in the sensing chamber 811 gradually increases, the force exerted by the flushing fluid on the scraper 810 increases. When it overcomes the force of the return spring 822, the scraper 810 rotates around the axis of the connecting rod 420. The volume of the sensing chamber 811 increases, and the volume of the adjacent sensing chamber 811 decreases. The flushing fluid in the sensing chamber 811 facing the large flow channel 220 continues to increase, and the scraper 810, which was not rotating at first, begins to rotate until the deformation of all the return springs 822 reaches its maximum value. The state at this time is as follows: Figure 12 As shown, the volume of the sensing cavity 811, which was originally facing the input port 251, reaches its maximum value, and the two large flow channels 220 are now connected. The drain pipe 721 is opened, and the waste liquid flows out from the drain pipe 721. During the above process, the scraper 810 rotates while rinsing the detection head 410 and the guide tube 300.

[0043] After rinsing is completed, the injection pipe 711 is closed, the reset spring 822 releases its elastic force, causing the scraper 810 to rotate, so that the included angle between two adjacent scrapers 810 returns to its initial state, and multiple scrapers 810 are evenly distributed around the circumference of the connecting rod 420.

[0044] In a further embodiment, the cleaning mechanism 800 further includes an auxiliary positioning component 830, which is used to maintain the N scrapers 810 in a preset phase. The auxiliary positioning component 830 includes N first magnetic strips 831 and N second magnetic strips 832. The N first magnetic strips 831 are respectively fixedly installed at the lower ends of the N scrapers 810; the N second magnetic strips 832 are evenly distributed along the circumference of the sealing cover 510 and fixedly connected to the upper surface of the sealing cover 510, and the magnetic poles at the lower ends of the first magnetic strips 831 are opposite to the magnetic poles at the upper ends of the second magnetic strips 832.

[0045] The present invention uses the auxiliary positioning component 830 to utilize magnetic pole attraction to further ensure that the scraper 810 can be stably positioned at a preset phase when stationary, thus ensuring the precise matching of the sensing cavity 811 with the large flow channel 220 and the small flow channel 230.

[0046] In a further embodiment, a buffer plate 130 is fixedly connected inside the detection cavity 120. The buffer plate 130 is located at the lower part of the detection cavity 120, and the area below the buffer plate 130 is a buffer cavity. A buffer tube 140 is fixedly connected to the upper surface of the buffer plate 130. The lower part of the buffer tube 140 is tapered with a wide opening facing downwards. The radius of the upper part of the buffer tube 140 is equal to the distance between the outer end face of the scraper 810 and the axis of the connecting rod 420. Multiple through holes 131 are opened on the buffer plate 130 directly opposite the buffer tube 140. The lower end of the scraper 810 is spiral-shaped.

[0047] By setting up a buffer plate 130 and a buffer tube 140, the liquid to be tested enters the buffer chamber before entering the detection chamber 120, thus preventing the water from flowing too fast into the detection chamber 120 and damaging the rapid water quality testing equipment. After the buffer chamber is filled with liquid, it enters the buffer tube 140 through the through hole 131. Under the guidance of the spiral scraper 810, the liquid to be tested rotates and flows, generating turbulence, which defoams the liquid to be tested and prevents gas from being mixed into the liquid to be tested, generating bubbles and affecting the accuracy of the test results.

[0048] Work process: When water quality testing is required, the turbidity detector 400 is moved upward by the lifting drive mechanism 600. During the movement of the turbidity detector 400, the upper sealing ring 520 is in sealed contact with the guide tube 300. When the turbidity detector 400 moves a preset distance, both sealing rings 520 are in sealed contact with the guide tube 300. As the turbidity detector 400 continues to move, the upper sealing ring 520 loses contact with the guide tube 300, but at this time, the sealing ring 520 on the sealing cover 510 is in sealed contact with the guide tube 300. The calibration chamber 110 is always separated from the detection chamber 120. At this time, standard solution is injected into the calibration chamber 110 through the liquid inlet pipe 111; the detection head 410 contacts the standard solution, detects the turbidity of the standard solution, and calibrates the value on the turbidity detector 400 to the turbidity value of the standard solution; thus completing the calibration work.

[0049] Close the drain pipe 721 and open the injection pipe 711; at this time, the sensing chamber 811 is connected to the calibration chamber 110, and the switching valve 250 is opened, so that one of the output ports 252 is connected. At this time, the flushing fluid entering the switching valve 250 through the input port 251 flows into the installation chamber 210 through the output port 252 and flows into the large flow channel 220 directly opposite it. When the flushing fluid passes the sensing plate 243 at this height, it gives the sensing plate 243 a thrust, pushing the switching ring 240 to rotate in the opposite direction by a preset angle until the limit plate 241 abuts against the small baffle 212, and the switching ring 240 can no longer rotate. At this time, the output... Liquid hole 242 is directly opposite small flow channel 230. Liquid can reach the guide channel opposite drain pipe 721 through the gap between small baffle 212 and installation cavity 210. Installation cavity 210 is filled with liquid. The flushing liquid in installation cavity 210 flows to small flow channel 230 and large flow channel 220 through infusion hole 242 and guide channel, and then enters multiple sensing cavities 811. After being guided by scraper 810, it enters calibration cavity 110 to flush calibration cavity 110. After flushing is completed, drain pipe 721 is opened and injection pipe 711 is closed. Waste liquid is discharged through drain pipe 721 and infusion pipe 121.

[0050] The lifting drive mechanism 600 drives the turbidity detector 400 to move upward. The turbidity detector 400 drives the sealing cover 510 to move upward synchronously through the connecting rod 420 until both sealing rings 520 are sealed and connected to the guide tube 300. The sensing chamber 811 is separated from the calibration chamber 110 and the detection chamber 120. At this time, the switching valve 250 is opened to connect the output port 252 at another height. The flushing fluid that enters the switching valve 250 through the input port 251 flows to the installation chamber 210 through the output port 252 and flows to the large flow channel 220 directly opposite it. When the flushing fluid passes the sensing plate 243 at this height, it pushes the switching ring 240 to rotate forward by a preset angle. At this time, the infusion hole 242 is blocked, and the limiting plate 241 abuts against the large baffle 211. The two sets of large baffles 211 and limiting plates 241 divide the installation chamber 210 into two chambers. The two chambers are connected to two guide channels respectively. The flushing fluid fills the chamber connected to the injection pipe 711, but cannot flow to the chamber connected to the drain pipe 721. The flushing fluid in the installation chamber 210 can only flow to the large flow channel 220 through the guide channel facing the inlet 251, and enter the sensing chamber 811 directly opposite it. As the flushing fluid in the sensing chamber 811 gradually increases, the force exerted by the flushing fluid on the scraper 810 increases. When it overcomes the force of the return spring 822, the scraper 810 rotates around the axis of the connecting rod 420. The volume of the sensing chamber 811 increases, and the volume of the adjacent sensing chamber 811 decreases. The flushing fluid in the sensing chamber 811 facing the large flow channel 220 continues to increase, and the scraper 810, which was not rotating at first, begins to rotate until the deformation of all the return springs 822 reaches its maximum value. The state at this time is as follows: Figure 12As shown, the volume of the sensing cavity 811, which was originally facing the input port 251, reaches its maximum value, and the two large flow channels 220 are now connected. The drain pipe 721 is opened, and the waste liquid flows out from the drain pipe 721. During the above process, the scraper 810 rotates while rinsing the detection head 410 and the guide tube 300.

[0051] After rinsing is complete, the injection tube 711 is closed, the return spring 822 releases its elastic force, causing the scraper 810 to rotate, restoring the included angle between adjacent scrapers 810 to its initial state. The N scrapers 810 are evenly distributed circumferentially around the connecting rod 420, and due to the mutual attraction between the first magnetic stripe 831 and the second magnetic stripe 832, the N scrapers 810 return to their initial phase. Figure 14 The state shown.

[0052] Start the lifting drive mechanism 600 to move the turbidity detector 400 downward until the sealing cover 510 contacts the bottom wall of the detection chamber 120. At this time, the upper sealing ring 520 and the guide tube 300 are in a sealed connection state, and the detection head 410 is located in the detection chamber 120. The test liquid is injected into the detection chamber 120 through the infusion tube 121. Before the test liquid enters the detection chamber 120, it first enters the buffer chamber to avoid the water flowing too fast into the detection chamber 120 and causing damage to the water quality rapid detection equipment. After the buffer chamber is filled with liquid, it enters the buffer tube 140 through the through hole 131. Under the guidance of the spiral scraper 810, the test liquid rotates and flows. After being impacted by the test liquid, the scraper 810 rotates synchronously around the connecting rod 420. During the rotation, the scraper 810 cleans the detection head 410 and the inner wall of the guide tube 300 connected to it again. During the above process, the test liquid generates turbulence, eliminating air bubbles and resolving the problem of gas mixing and bubble formation in the test liquid. This avoids optical interference from air bubbles in turbidity detection and ensures the accuracy of the test results. When the height of the test liquid reaches the detection standard, the turbidity detector 400 performs turbidity detection on the test liquid.

[0053] After the test is completed, the test liquid is discharged through the infusion tube 121, at which point the sensing chamber 811 is connected to the detection chamber 120. The drain pipe 721 is closed, and the injection pipe 711 and the switching valve 250 are opened, connecting one of the output ports 252. At this time, the flushing liquid entering through the inlet 251 flows into the mounting chamber 210 through the output port 252 and flows into the large flow channel 220 directly opposite it. When the flushing liquid passes the sensing plate 243 at this height, it provides a thrust to the sensing plate 243, pushing the switching ring 240 to rotate in the opposite direction. The switching ring 240 drives the limiting plate 241 to rotate synchronously. When it rotates to a preset angle, the limiting plate 241... When the small baffle 212 comes into contact with the switch ring 240, it can no longer rotate. At this time, the infusion port 242 is directly opposite the small flow channel 230. The liquid can reach the guide channel directly opposite the drain pipe 721 through the gap between the small baffle 212 and the installation cavity 210. The installation cavity 210 is filled with liquid. The flushing liquid in the installation cavity 210 flows to the small flow channel 230 and the large flow channel 220 through the infusion port 242 and the guide channel. Then it enters multiple sensing cavities 811 and enters the detection cavity 120 through the scraper 810 to flush the detection cavity 120. The waste liquid is discharged through the infusion pipe 121, completing the flushing of the detection cavity 120.

[0054] Furthermore, this invention also provides a rapid water quality testing method, which uses the rapid water quality testing equipment provided by this invention to test water quality, including the following steps: S1: Inject standard solution into calibration chamber 110.

[0055] S2: The lifting drive mechanism 600 drives the turbidity detector 400 to move upward until the detection head 410 contacts the standard solution, detects the turbidity of the standard solution, and calibrates the value on the turbidity detector 400 to the turbidity value of the standard solution.

[0056] S3: Use the rinsing mechanism 700 to rinse the calibration chamber 110 and the turbidity detector 400 located in the calibration chamber 110.

[0057] S4: The lifting drive mechanism 600 drives the turbidity detector 400 to move downward until the detection head 410 reaches the detection chamber 120.

[0058] S5: Inject the test liquid into the detection chamber 120, and the turbidity detector 400 detects the turbidity value of the test liquid.

[0059] S6: The rinsing mechanism 700 is used to rinse the detection chamber 120 and the turbidity detector 400 located in the detection chamber 120.

[0060] When using the rapid water quality detection method provided by this invention, no manual operation is required, which solves the problem of inaccurate manual calibration. Moreover, the operation steps are simple, the detection efficiency is high, and the detection accuracy is high.

[0061] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rapid water quality testing device, characterized in that, include: Testing bucket; A partition is fixedly connected inside the testing chamber, dividing it into upper and lower chambers. The chamber above the partition is the calibration chamber, and the chamber below the partition is the testing chamber. The side wall of the calibration chamber is connected to an inlet pipe and an outlet pipe, with the outlet pipe at the same height as the bottom wall of the calibration chamber. The bottom of the testing chamber is connected to an infusion pipe. The guide tube extends vertically and is fixedly connected to the partition, with its upper end extending into the calibration chamber and its lower end extending into the detection chamber. The turbidity detector is installed in the guide tube and slides up and down; a detection head is provided at its lower end; a connecting rod is fixedly connected to the lower end of the turbidity detector. The sealing mechanism includes a sealing cover and a sealing ring. The sealing cover is fixedly connected to the lower end of the connecting rod. There are two sealing rings. One sealing ring is located on the lower side wall of the turbidity detector to seal the gap between the turbidity detector and the guide tube. The other sealing ring is located on the side wall of the sealing cover to seal the gap between the sealing cover and the guide tube. The lifting drive mechanism is used to drive the turbidity detector to slide up and down within a preset range. During the sliding process of the turbidity detector, at least one sealing ring is sealed to the guide tube. The rinsing mechanism is used to rinse the detection chamber and calibration chamber.

2. The rapid water quality testing device according to claim 1, characterized in that, A cleaning mechanism is provided at the lower end of the turbidity detector, which is used to clean the detection head and guide tube of the turbidity detector.

3. The rapid water quality testing device according to claim 2, characterized in that, The cleaning mechanism includes N scrapers, which are evenly distributed around the circumference of the connecting rod. The scrapers are vertically arranged and extend radially along the connecting rod, with their inner sides rotatably mounted on the connecting rod. The upper end of the scraper abuts against the turbidity detector, and the outer end abuts against the inner wall of the guide tube. In the initial state, the detection head is located between two scrapers.

4. The rapid water quality testing device according to claim 3, characterized in that, The flushing mechanism includes a flushing tank and a waste liquid tank; an installation cavity is provided in the partition, and the installation cavity is connected to an injection pipe and a drain pipe; two adjacent scrapers define a sensing cavity; The partition has N flow channels, each corresponding to one of the N sensing cavities. The flow channels extend radially along the detection barrel, with one end connected to the mounting cavity and the other end connected to the sensing cavity.

5. The rapid water quality testing device according to claim 4, characterized in that, The N flow channels include two large flow channels and N-2 small flow channels. The width of the large flow channels in the horizontal direction is greater than the width of the small flow channels in the horizontal direction. The two large flow channels are directly opposite the injection pipe and the drainage pipe, respectively. A switching ring is installed in the mounting cavity. The switching ring is coaxially arranged with the detection tank and rotates within the mounting cavity within a preset angle range. The switching ring has N-2 infusion holes. Two sensing plates are arranged on the side of the switching ring facing the injection pipe. The two sensing plates are distributed vertically and are inclined. The sensing plates have a preset angle with the vertical plane, and the inclination directions of the two sensing plates are opposite. When one sensing plate is subjected to force, it drives the switching ring to rotate clockwise. When the other sensing plate is subjected to force, it drives the switching ring to rotate counterclockwise. In the initial state, the infusion holes are blocked, and the liquid can only flow to the large flow channel facing the injection pipe. After the switching ring rotates in the reverse direction by a preset angle, the N-2 infusion holes are directly opposite the N-2 small flow channels, and the liquid can flow to all large flow channels and all small flow channels. The injection tube is connected to a switching valve, which includes one inlet and two outlets. The two outlets are distributed vertically, with their heights equal to those of the two sensing plates. The cleaning mechanism also includes a reset assembly, which is used to ensure that the N scrapers tend to be evenly distributed along the circumference of the connecting rod.

6. The rapid water quality testing device according to claim 5, characterized in that, The reset assembly includes a support ring and multiple reset springs; the support ring is coaxially arranged with the connecting rod and passes through N scrapers in sequence; the multiple reset springs are evenly distributed along the circumference of the connecting rod, the reset springs are arc-shaped, fitted onto the support ring, and the two ends of the reset springs abut against two scrapers respectively, so that the two scrapers tend to maintain a preset included angle.

7. The rapid water quality testing device according to claim 6, characterized in that, The cleaning mechanism also includes an auxiliary positioning component, which is used to keep the N scrapers in a preset phase.

8. The rapid water quality testing device according to claim 7, characterized in that, The auxiliary positioning component includes N first magnetic strips and N second magnetic strips. The N first magnetic strips are fixedly installed at the lower ends of the N scrapers. The N second magnetic strips are evenly distributed along the circumference of the sealing cover and fixedly connected to the upper surface of the sealing cover. The magnetic poles at the lower ends of the first magnetic strips are opposite to the magnetic poles at the upper ends of the second magnetic strips.

9. A rapid water quality testing device according to claim 3, characterized in that, A buffer plate is fixedly connected inside the detection chamber; the buffer plate is located at the lower part of the detection chamber, and a buffer tube is fixedly connected to the upper surface of the buffer plate. The lower part of the buffer tube is a cone shape with a large opening facing downwards; the radius of the upper part of the buffer tube is equal to the distance between the outer end face of the scraper and the axis of the connecting rod; multiple through holes are opened on the buffer plate directly opposite the buffer tube; the lower end of the scraper is spiral-shaped.

10. A rapid water quality detection method, characterized in that, The method of testing water quality using a rapid water quality testing device according to any one of claims 1-9 includes the following steps: S1: Inject standard solution into the calibration chamber; S2: The lifting drive mechanism moves the turbidity detector upward until the detection head contacts the standard solution, detects the turbidity of the standard solution, and calibrates the value on the turbidity detector to the turbidity value of the standard solution. S3: Use the rinsing mechanism to rinse the calibration chamber and the turbidity detector located in the calibration chamber; S4: The lifting drive mechanism moves the turbidity detector downward until the detection head reaches the detection chamber; S5: Inject the test liquid into the detection chamber, and the turbidity detector detects the turbidity value of the test liquid; S6: Use the rinsing mechanism to rinse the detection chamber and the turbidity detector located in the detection chamber.

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