A water quality sensor

Abstract

This invention discloses a water quality sensor, relating to the field of water quality detection technology. It includes a mounting box containing a temperature detection component and an ultraviolet (UV) detection component. A controller is mounted on the outside of the mounting box, and a temperature compensation module is installed inside the controller. The temperature detection component includes a vertical tube, with a temperature sensor fixed to the outside of the vertical tube, and the sensor's detection end located inside the vertical tube. The UV detection component includes a transparent shell, and the vertical tube is connected to the transparent shell. This invention incorporates a temperature compensation module that collects the power of a UV lamp irradiating a sample water at a temperature of T+0.5 (where T is an integer) while maintaining constant transmittance. The collected data is input into the controller. When the temperature detected by the temperature sensor is n, the maximum integer value of n is taken, thus ensuring the UV lamp power reaches the UV lamp power at temperature [n]+0.5, thereby guaranteeing the accuracy of UV lamp detection.

Description

Technical Field

[0001] This invention relates to the field of water quality testing technology, and in particular to a water quality sensor. Background Technology

[0002] Safe and clean water is a fundamental necessity for citizens. Human health and safety require drinking water and other household water to meet numerous health and environmental standards. Contamination of water supply facilities or source liquids can affect the lives of thousands of families. Not only should disruptions and attacks on water supplies be prevented, but rapid detection is also essential.

[0003] A search revealed patent document CN112791445A, which discloses a device that can be installed on a faucet for detecting the presence of one or more contaminants in tap water. When the faucet is turned on and tap water fills the sample chamber, one or more electronic receivers can detect the presence of contaminants. At least one of the electronic receivers is an illuminance sensor used to detect the absorption of ultraviolet (UV) light in the 250nm to 300nm range. When water fills the sample chamber, a UV254 LED is activated. The measurement circuit can calculate total organic carbon (TOC) through the correlation of UV254 absorbance. The device can transmit pollution data such as TOC levels to a remote device for remote monitoring of tap water.

[0004] However, the above invention has the following shortcomings: The above patent mainly refers to the degree of absorption of ultraviolet light (UV) to judge the quality of water (turbid water absorbs more ultraviolet light, so the ultraviolet light penetration effect is low), but does not consider the influence of water temperature on the absorption of ultraviolet light. For example, the higher the water temperature, the lower the density of water, and the lower the speed of light in water. Since the refractive index is proportional to the speed of light, the refractive index is smaller. And since reflectivity + absorptivity + transmittance = 100% light source, assuming that the absorptivity remains unchanged (assuming that the medium in water that can absorb ultraviolet light is not affected by temperature), the smaller the refractive index, the smaller the reflection loss and the greater the transmittance. Water temperature will affect the accuracy of detection. Summary of the Invention

[0005] The purpose of this invention is to provide a water quality sensor to solve the problems mentioned in the background art.

[0006] The technical solution of the present invention is: a water quality sensor, including a mounting box, wherein a temperature detection component and an ultraviolet detection component are arranged inside the mounting box, and a controller is installed on the outside of the mounting box, wherein a temperature compensation module is arranged inside the controller;

[0007] The temperature detection assembly includes a vertical tube, a temperature sensor is fixed on the outside of the vertical tube, and the detection end of the temperature sensor is located inside the vertical tube.

[0008] The ultraviolet detection component includes a transparent shell, the vertical tube is connected to the transparent shell, an outer bracket is fixed to the outside of the transparent shell, and an ultraviolet lamp and a light source receiver are respectively fixed at both ends of the outer bracket. The ultraviolet lamp and the light source receiver are both electrically connected to the controller.

[0009] Preferably, the vertical tube protrudes outward on one side to form a cavity, and a shafted impeller is rotatably mounted on both sides of the cavity. A small generator is fixed to the outside of the vertical tube, and the input shaft of the small generator is coaxially fixed with the impeller. The controller is equipped with a current sensor electrically connected to it, and the small generator is electrically connected to the current sensor.

[0010] Preferably, the installation box is equipped with a conductivity detection component, which includes a transparent box. The transparent box is equipped with a detection mechanism for detecting conductivity, and the transparent box is connected to the transparent shell.

[0011] Preferably, a non-contact water level sensor is fixedly installed on the outside of the transparent box, and the non-contact water level sensor is electrically connected to the controller.

[0012] Preferably, a water pump is fixedly installed inside the mounting box, and a flow sensor that is electrically connected to the controller is installed inside the water pump.

[0013] Preferably, the suction end of the water pump is equipped with a third pipe, and a first solenoid valve connected to the third pipe is installed on the third pipe. The discharge end of the water pump is connected to the vertical pipe through a first pipe. The bottom of the transparent box is fixed with a fourth pipe connected to the fourth pipe, and a third solenoid valve connected to the fourth pipe is installed on the fourth pipe. A second pipe is connected between the third pipe and the fourth pipe, and a second solenoid valve connected to the second pipe is installed on the second pipe. The first solenoid valve, the second solenoid valve, and the third solenoid valve are all electrically connected to the controller.

[0014] Preferably, the detection mechanism includes four electrode plates, which are divided into two pairs and respectively arranged on both sides of the transparent box. A replacement mechanism is provided on both sides of the transparent box. The replacement mechanism causes the two electrode plates on the same side to be replaced vertically, with the lower electrode plate in a vertical state and the upper electrode plate in a horizontal state.

[0015] Preferably, the replacement mechanism includes a fixed cylinder, one end of which is fixed inside a transparent box. A cam cylinder, coaxially arranged with the fixed cylinder, is fixed inside the transparent box. A cam groove is formed on the outer side of the cam cylinder, consisting of a first incomplete annular groove, a second incomplete annular groove, and two through grooves. The two ends of the through grooves are respectively connected to the first and second incomplete annular grooves. A rotating ring is rotatably mounted on the outer side of the fixed cylinder. Two notches are formed on the outer side of the rotating ring. A gear with a shaft is rotatably mounted inside the notches. Fixed rods are fixed to both ends of the gear with a shaft. One end of each fixed rod is fixed to an electrode plate. A toothed plate meshing with the gear with a shaft is provided inside the notches. A cylindrical block is rotatably mounted on one end of the toothed plate, and the cylindrical block is positioned within the cam groove. The toothed plate has two sides... Each part has a guide groove, and guide blocks with an integral structure with the rotating ring are provided on both sides of the notch, and the guide blocks are set in the guide groove. A fixing frame is fixed on the ring surface of the rotating ring, and a synchronizing rod coaxially arranged with the rotating ring is fixed between the two fixing frames. A small servo motor that is electrically connected to the controller is fixed on the top of the transparent box. A first bevel gear coaxially arranged with the output shaft of the small servo motor is fixed. A second bevel gear coaxially arranged with and meshing with the first bevel gear is fixed on the outside of the synchronizing rod. An insertion port is opened on the bottom of the outer side of the fixing cylinder. A conductive sheet is fixed inside the insertion port. A conductive rod is fixed to one end of the conductive sheet. One end of the conductive rod leads out of the transparent box. An AC power supply is installed inside the controller. The AC power supply is connected to the two conductive rods through wires.

[0016] Preferably, an ammeter electrically connected to the controller is fixed to one end of the outer side of the transparent box, and two conduits are fixed inside the transparent box. The two detection lines of the ammeter are arranged inside the two conduits, and a brush electrically connected to the detection lines is fixed to one end of each conduit.

[0017] Preferably, the electrode sheet has a Z-shaped cross-section, and the transparent box has a water flow channel inside. One end of the electrode sheet located at the top is located in the water flow channel. A connecting pipe connected to the flow channel is fixed on the outside of the transparent box. A water storage cylinder, a filter pipe, and a small water pump connected to the connecting pipe are installed on the connecting pipe. The small water pump is located between the water storage cylinder and the filter pipe. The water storage cylinder contains purified water, and the filter pipe contains a filter element. The small water pump is electrically connected to the controller. Four fixing plates are fixed inside one end of the transparent box. The four fixing plates are divided into two pairs and are respectively located on both sides of one end of the transparent box. A sponge is fixed on the opposite side of each pair of fixing plates, and a soft brush is embedded inside the sponge.

[0018] The present invention provides an improved water quality sensor, which, compared with the prior art, has the following advantages:

[0019] Firstly, this invention is equipped with a temperature compensation module. It collects the power of the ultraviolet lamp irradiating the sample water quality at a temperature of T+0.5 with constant transmittance (T is an integer), and inputs the collected data into the controller. When the temperature detected by the temperature sensor is n, the maximum integer value of n is taken, and the power of the ultraviolet lamp reaches the power of the ultraviolet lamp at a temperature of [n]+0.5, thereby ensuring the accuracy of ultraviolet lamp detection.

[0020] Secondly, this invention is based on the TDS detection principle to detect water quality, that is, to measure the conductivity between two electrode plates under AC power. This invention can clean the electrode plates used for detection, because after a long time, impurities will adhere to the surface of the electrode plates, which will affect the detection results. Cleaning can effectively improve the accuracy of detection.

[0021] Thirdly, it ensures that the flow rate of the water to be tested remains at a certain value. When there are insoluble solids in the water flow, the solids in the water will cause a greater impact on the impeller, thereby increasing the impeller speed and increasing the current generated by the small generator per unit time. Thus, the turbidity of the water can be judged based on the amount of current generated per unit time. At the same time, the generated current can be stored to achieve energy saving. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the mounting box of the present invention;

[0025] Figure 3 for Figure 2 A schematic diagram of a boxless structure;

[0026] Figure 4 for Figure 3 A magnified structural diagram at point A;

[0027] Figure 5 This is a cross-sectional view of the temperature detection component of the present invention;

[0028] Figure 6 This is a three-dimensional structural diagram of the conductivity detection component of the present invention;

[0029] Figure 7This is a first-view structural diagram of the internal structure of the conductivity detection component of the present invention;

[0030] Figure 8 This is a schematic diagram of the internal structure of the conductivity detection component of the present invention from a second perspective.

[0031] Figure 9 This is a first-view structural diagram of the detection mechanism of the present invention.

[0032] Figure 10 This is a schematic diagram of the detection mechanism of the present invention from a second perspective.

[0033] Figure 11 This is a three-dimensional structural diagram of the replacement mechanism of the present invention.

[0034] Figure 12 for Figure 11 A partial sectional view.

[0035] Figure 13 This is a schematic diagram of the three-dimensional structure of the cam cylinder of the present invention.

[0036] Figure label:

[0037] 1. Mounting box; 2. Controller; 3. Water pump; 4. First solenoid valve; 5. Second pipeline; 6. Third pipeline; 7. Second solenoid valve; 8. Third solenoid valve; 9. Fourth pipeline; 10. Conductivity detection component; 11. Ultraviolet detection component; 12. Temperature detection component; 13. Vertical pipe; 14. Small generator; 15. Temperature sensor; 16. Transparent shell; 17. External bracket; 18. Ultraviolet lamp; 19. Light source receiver; 20. Shafted impeller; 21. Transparent box; 22. Non-contact water level sensor; 23. Detection mechanism; 24. Water flow channel; 25. Water storage tank; 26. Connector 27. Pipe; 28. Small water pump; 29. ​​Filter pipe; 30. Small servo motor; 31. First bevel gear; 32. Second bevel gear; 33. Synchronizing rod; 34. Replacement mechanism; 35. Electrode plate; 36. Ammeter; 37. Brush; 38. Conductor pipe; 39. Fixing plate; 40. Sponge; 41. Cam cylinder; 42. Fixing cylinder; 43. Rotating ring; 44. Fixing frame; 45. Gear with shaft; 46. Fixing rod; 47. Gear plate; 48. Guide groove; 49. Conductive rod; 50. Conductive sheet; 51. First incomplete annular groove; 52. Second incomplete annular groove; 53. Through groove; 54. First pipeline. Detailed Implementation

[0038] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. 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.

[0039] This invention provides an improved water quality sensor. The technical solution of this invention is as follows:

[0040] like Figures 1 to 8 As shown, this embodiment of the invention provides a water quality sensor, including a mounting box 1. The mounting box 1 is equipped with a temperature detection component 12 and an ultraviolet detection component 11. A controller 2 is mounted on the outside of the mounting box 1. The controller 2 is equipped with a temperature compensation module. Here, we will provide a supplementary description of the controller 2: a display is mounted on the outside of the controller 2. The controller 2 is prior art, and its specific structure and working principle will not be described in detail here.

[0041] The temperature detection assembly 12 includes a vertical tube 13, a temperature sensor 15 is fixed on the outside of the vertical tube 13, and the detection end of the temperature sensor 15 is located inside the vertical tube 13.

[0042] The ultraviolet detection component 11 includes a transparent shell 16, a vertical tube 13 connected to the transparent shell 16, an outer bracket 17 fixed to the outside of the transparent shell 16, an ultraviolet lamp 18 and a light source receiver 19 fixed to the two ends of the outer bracket 17 respectively, and the ultraviolet lamp 18 and the light source receiver 19 are electrically connected to the controller 2.

[0043] The temperature compensation module operates as follows:

[0044] S1. Data acquisition: Keep the intensity of the light source received by the light source receiver 19 constant, and collect the power of the ultraviolet lamp 18 irradiating qualified water quality at a temperature of T+0.5. T is an integer, that is, the corresponding temperature is 0.5, 1.5, 2.5, ..., T+0.5.

[0045] S2, Temperature detection: The water quality to be detected is detected by temperature sensor 15, and the temperature sensor will feed back the detected temperature value n to controller 2.

[0046] S3. Data selection: Select temperature value = the largest integer value of n + 0.5. If the detected temperature is 26.3 or 26.7, in order to reduce error, select the power corresponding to 26.5.

[0047] S4. Power adjustment: The controller 2 adjusts the power of the ultraviolet lamp 18 according to the selected temperature value;

[0048] As can be seen from the above connection relationship: the water to be tested passes through the vertical pipe 13, the temperature sensor 15 on the vertical pipe 13 detects its temperature, and inputs the collected data into the controller 2. When the temperature detected by the temperature sensor 15 is n, the maximum integer value of n is taken, and the power of the ultraviolet lamp 18 reaches the power of the ultraviolet lamp 18 at temperature [n]+0.5. The beam of the ultraviolet lamp 18 passes through the transparent shell 16. The water to be tested inside the transparent shell 16 absorbs part of the ultraviolet light, and the light source receiver 19 receives the unabsorbed ultraviolet light. The light source receiver 19 feeds back the received light source intensity signal to the controller 2. The controller 2 displays the value on the display, which shows the transmittance of the water to be tested at temperature [n]+0.5, and also shows the transmittance of qualified water at the current temperature, so that workers can make comparisons and references to determine whether the water quality is qualified.

[0049] Specifically, in conjunction with the appendix Figure 4 and attached Figure 5 As shown, the vertical pipe 13 protrudes outward on one side to form a cavity. A shafted impeller 20 is rotatably mounted on both sides of the cavity. A small generator 14 is fixed to the outside of the vertical pipe 13. The input shaft of the small generator 14 is coaxially fixed with the impeller. A current sensor electrically connected to the controller 2 is installed inside the controller 2, and the small generator 14 is electrically connected to the current sensor. Through the above connection relationship, it can be seen that when the flow rate of the water to be detected is kept at a certain value, when there are insoluble solids in the water flow, the solids in the water will cause a large impact on the impeller, thereby increasing the impeller speed and increasing the current generated by the small generator 14 per unit time. Therefore, the turbidity of the water can be judged based on the amount of current generated per unit time. At the same time, the generated current can be stored to achieve energy saving.

[0050] Specifically, in conjunction with the appendix Figure 6 -Appendix Figure 13 As shown, the inside of the mounting box 1 is equipped with a conductivity detection component 10. The conductivity detection component 10 includes a transparent box 21. The transparent box 21 is made of an insulating and corrosion-resistant material. The specific material is not limited. The inside of the transparent box 21 is equipped with a detection mechanism 23 for detecting conductivity. The transparent box 21 is connected to the transparent shell 16.

[0051] Specifically, in conjunction with the appendix Figure 6 As shown, a non-contact water level sensor 22 is fixedly installed on the outside of the transparent box 21, and the non-contact water level sensor 22 is electrically connected to the controller 2. The non-contact water level sensor 22 is existing technology, and its specific structure and working principle will not be described in detail here. The non-contact water level sensor 22 is selected because it does not need to come into contact with water, the measuring end of the non-contact water level sensor 22 will not pollute the water source, and it will not affect the conductivity detection.

[0052] Specifically, a water pump 3 is fixedly installed inside the mounting box 1, and a flow sensor that is electrically connected to the controller 2 is installed inside the water pump 3.

[0053] Specifically, in conjunction with the appendix Figure 3 As shown, a third pipe 6 is installed at the suction end of the water pump 3, and a first solenoid valve 4 connected to the third pipe 6 is installed on the third pipe 6. A first pipe 53 connecting the water outlet end of the water pump 3 and the vertical pipe 13 is provided. A fourth pipe 9 connected to the bottom of the transparent box 21 is fixed thereto, and a third solenoid valve 8 connected to the fourth pipe 9 is installed on the fourth pipe 9. A second pipe 5 connecting the third pipe 6 and the fourth pipe 9 is provided, and a second solenoid valve 7 connected to the second pipe 5 is installed thereto. The first solenoid valve 4, the second solenoid valve 7, and the third solenoid valve 8 are all electrically connected to the controller 2. The third pipe 6 The bottom end is introduced into the water source to be tested through a hose. At this time, the first solenoid valve 4 remains open, while the second solenoid valve 7 and the third solenoid valve 8 remain closed. The water is sucked in by the water pump 3 and, after passing through the first pipe 53, the vertical pipe 13 and the transparent shell 16, it stays in the transparent box 21. The non-contact water level sensor 22 detects the water level. When the water level reaches the specified position, the first solenoid valve 4 closes, the second solenoid valve 7 opens, and the third solenoid valve 8 remains closed, so that the water circulates among the water pump 3, the vertical pipe 13, the transparent shell 16 and the transparent box 21. This allows the water quality to be tested multiple times to ensure the accuracy of the test.

[0054] Specifically, in conjunction with the appendix Figure 7 As shown, the detection mechanism 23 includes four electrode plates 34. The four electrode plates 34 are divided into two pairs and are respectively arranged on both sides of the transparent box 21. The transparent box 21 is equipped with a replacement mechanism 33 on both sides. The replacement mechanism 33 causes the two electrode plates 34 on the same side to be replaced vertically. The lower electrode plate 34 is in a vertical state, and the upper electrode plate 34 is in a horizontal state. It should be noted that the water level only needs to be measured before the bend of the lower electrode plate 34.

[0055] Specifically, in conjunction with the appendix Figure 9 -Appendix Figure 13 As shown, the replacement mechanism 33 includes a fixed cylinder 41, one end of which is fixed inside a transparent box 21. A cam cylinder 40, coaxially arranged with the fixed cylinder 41, is fixed inside the transparent box 21. (See attached diagram.) Figure 13 The outer side of the cam cylinder 40 is provided with a cam groove, which consists of a first incomplete annular groove 50, a second incomplete annular groove 51, and two through grooves 52. The two ends of the through grooves 52 are respectively connected to the first incomplete annular groove 50 and the second incomplete annular groove 51; combined with the attached... Figure 11A rotating ring 42 is rotatably mounted on the outer side of the fixed cylinder 41. Two notches are formed on the outer side of the rotating ring 42. A gear 44 with a shaft is rotatably mounted inside the notches. Fixed rods 45 are fixed to both ends of the gear 44. One end of each fixed rod 45 is fixed to an electrode plate 34. A toothed plate 46 meshes with the gear 44 inside the notches. A cylindrical block is rotatably mounted on one end of the toothed plate 46 and is positioned within a cam groove. Guide grooves 47 are formed on both sides of the toothed plate 46. Guide blocks, integral with the rotating ring 42, are formed on both sides of the notches and are positioned within the guide grooves 47. A fixed bracket 43 is fixed to the annular surface of the rotating ring 42. A synchronizing rod 32, coaxially aligned with the rotating ring 42, is fixed between the two fixed brackets 43. A small device electrically connected to the controller 2 is fixed to the top of the transparent box 21. The output shaft of the servo motor 29 is fixed with a first bevel gear 30 coaxially arranged with it. The outer side of the synchronizing rod 32 is fixed with a second bevel gear 31 coaxially arranged with it and meshing with the first bevel gear 30. The bottom of the outer side of the fixed cylinder 41 is provided with an insertion port. A conductive sheet 49 is fixed inside the insertion port. A conductive rod 48 is fixed to one end of the conductive sheet 49. One end of the conductive rod 48 leads out of the transparent box 21. An AC power supply is installed inside the controller 2. The AC power supply is connected to the two conductive rods 48 through wires. An ammeter 35 is fixed to one end of the outer side of the transparent box 21 and is electrically connected to the controller 2. Two wire tubes 37 are fixed inside the transparent box 21. The two detection lines of the ammeter 35 are set in the two wire tubes 37. A brush 36 is fixed to one end of the wire tube 37 and is electrically connected to the detection line.

[0056] Further explanation of controller 2: Controller 2 has a built-in conductivity algorithm (consistent with the conductivity algorithm used for TDS detection). The conductivity algorithm is existing technology and will not be described in detail here. Controller 2 also has a temperature compensation algorithm adapted to TDS detection. The temperature compensation algorithm is also existing technology and will not be described in detail here. Here is an example of an existing temperature compensation algorithm: TDS = 0.55K; with 25℃ as the standard temperature, the conductivity increases by 2% for every 1℃ increase in temperature. Therefore, temperature is used as a compensation factor in the TDS calculation. The formula is: K = K(final temperature compensation) ÷ (1 + 0.02 * (T - 25)), where T is the measured solution temperature.

[0057] As can be seen from the above connection relationship, the conductivity detection component 10 detects water quality based on the TDS detection principle, measuring the conductivity between the two electrode plates 34 under AC power, i.e., the ammeter 35 detects the current magnitude. The ammeter 35 feeds back the detected current to the controller 2, which has a built-in conductivity algorithm (consistent with the conductivity algorithm used for TDS detection) for calculation. After the electrode plates 34 have been working for a period of time, the small servo motor 29 rotates the first bevel gear 30 through the output shaft. The first bevel gear 30 drives the synchronous rod 32 to rotate through the second bevel gear 31 meshing with it. The fixing brackets 43 on both ends of the synchronous rod 32 rotate with the synchronous rod 32. The fixed frame 43 drives the rotating ring 42 to rotate. Here, it is necessary to control the rotating ring 42 to rotate 180 degrees. During the upward rotation of the lower electrode plate 34, the cylindrical block on one end of the lower toothed plate 46 enters the second incomplete annular groove 51 from the first incomplete annular groove 50. The toothed plate 46 is pulled back, and the toothed plate 46 moves the shaft gear 44 that meshes with it. The shaft gear 44 drives the fixed rod 45 to rotate 90 degrees, so that the electrode plate 34 changes from a vertical state to a horizontal state. Thus, it can be seen that during the downward replacement of the original upper electrode plate 34, it changes from a horizontal state to a vertical state. When it is completely placed at the bottom, the original upper electrode plate 34 contacts the conductive plate 49, thereby conducting electricity.

[0058] Specifically, in conjunction with the appendix Figure 9As shown, the electrode plate 34 has a Z-shaped cross-section. A water flow channel 24 is provided inside the transparent box 21. One end of the upper electrode plate 34 is located within the water flow channel 24. A connecting pipe 26, connected to the flow channel 52, is fixed to the outside of the transparent box 21. A water storage cylinder 25, a filter pipe 28, and a small water pump 27 are installed on the connecting pipe 26. The small water pump 27 is located between the water storage cylinder 25 and the filter pipe 28. The water storage cylinder 25 contains purified water, and the filter pipe 28 contains a filter element. The small water pump 27 is electrically connected to the controller 2. Four fixing plates 38 are fixed inside one end of the transparent box 21. The four fixing plates 38 are divided into two pairs and are respectively located on both sides of one end of the transparent box 21. A sponge 39 is fixed to one side of each pair of fixing plates 38, and a soft brush is embedded inside the sponge 39. The lower electrode plate 34 rotates upwards... During the process, the cylindrical block on one end of the lower toothed plate 46 enters the second incomplete annular groove 51 from the first incomplete annular groove 50. The toothed plate 46 is pulled back, and the toothed plate 46 moves the shaft gear 44 that meshes with it. The shaft gear 44 drives the fixed rod 45 to rotate 90 degrees, so that the electrode plate 34 changes from a vertical state to a horizontal state. At this time, one end of the electrode plate 34 is located in the water flow channel 24. The small water pump 27 is started, so that the pure water in the water storage tank 25 flows through the water flow channel 24, the filter pipe 28 and the water storage tank 25 in sequence, that is, it circulates in the three to rinse the electrode plate 34. During the downward replacement of the original upper electrode plate 34, in the process of changing from a horizontal state to a vertical state, the original upper electrode plate 34 is in the vertical plane in advance, and then passes through the sponge 39. The sponge 39 wipes the water off the electrode plate 34, and at the same time, the soft brush inside the sponge 39 can clean the electrode plate 34 again.

[0059] Working principle:

[0060] The first step is to introduce water: the bottom end of the third pipe 6 is introduced into the water source to be tested through a hose. At this time, the first solenoid valve 4 remains open, while the second solenoid valve 7 and the third solenoid valve 8 remain closed. Water is sucked in by the water pump 3 and, after passing through the first pipe 53, the vertical pipe 13 and the transparent shell 16, stays in the transparent box 21. The non-contact water level sensor 22 detects the water level. When the water level reaches the specified position, the first solenoid valve 4 closes, the second solenoid valve 7 opens, and the third solenoid valve 8 remains closed, so that the water circulates among the four components: the water pump 3, the vertical pipe 13, the transparent shell 16 and the transparent box 21.

[0061] The second step is to conduct testing, which includes the following types of testing:

[0062] (1) When the flow rate of the water to be tested is kept at a certain value, when there are insoluble solids in the water flow, the solids in the water will cause a large impact on the impeller, thereby increasing the speed of the impeller and increasing the current generated by the small generator per unit time. Therefore, it can be seen that the degree of turbidity of the water can be judged based on the amount of current generated per unit time.

[0063] (2) The water to be tested passes through the vertical pipe 13. The temperature sensor 15 on the vertical pipe 13 detects the temperature and inputs the collected data into the controller 2. When the temperature detected by the temperature sensor 15 is n, the maximum integer value of n is taken. Then the power of the ultraviolet lamp 18 reaches the power of the ultraviolet lamp 18 at the temperature of [n]+0.5. The beam of the ultraviolet lamp 18 passes through the transparent shell 16. The water to be tested inside the transparent shell 16 absorbs part of the ultraviolet light. The light source receiver 19 receives the ultraviolet light that is not absorbed. The light source receiver 19 feeds back the received light source intensity signal to the controller 2. The controller 2 displays the value on the display, which shows the transmittance of the water to be tested at the temperature of [n]+0.5. It also shows the transmittance of the qualified water at the current temperature, so that workers can make a comparison and reference to determine whether the water quality is qualified.

[0064] (3) Measure the conductivity between the two electrode plates 34 under AC power supply, that is, the ammeter 35 detects the current magnitude, and the ammeter 35 feeds back the detected current to the controller 2. The controller 2 has a built-in conductivity algorithm (consistent with the conductivity algorithm used for TDS detection) to perform calculations.

[0065] Thirdly, after the test is completed, the third solenoid valve 8 is opened to drain the water. After drainage, the small servo motor 29 rotates the first bevel gear 30 through the output shaft. The first bevel gear 30 drives the synchronous rod 32 to rotate through the second bevel gear 31 meshing with it. The fixing brackets 43 on both ends of the synchronous rod 32 rotate with the synchronous rod 32. The fixing brackets 43 drive the rotating ring 42 to rotate. Here, it is necessary to control the rotating ring 42 to rotate 180 degrees. During the upward rotation of the electrode plate 34 located below, the cylindrical block on one end of the lower toothed plate 46 enters the second incomplete annular groove 51 from the first incomplete annular groove 50. The toothed plate 46 is pulled back, and the toothed plate 46 moves the shafted gear 44 meshing with it. Wheel 44 drives fixed rod 45 to rotate 90 degrees, causing electrode plate 34 to change from a vertical to a horizontal state. At this time, one end of electrode plate 34 is located in water flow channel 24. Small water pump 27 is started, causing pure water in water storage tank 25 to flow through water flow channel 24, filter pipe 28 and water storage tank 25 in sequence, that is, to circulate in the three to rinse electrode plate 34. During the process of the original upper electrode plate 34 being replaced downward, changing from a horizontal to a vertical state, the original upper electrode plate 34 is in the vertical plane in advance, and then passes through sponge 39. Sponge 39 wipes the water off electrode plate 34, and at the same time, the soft brush inside sponge 39 can clean electrode plate 34 again. This electrode plate 34 is reserved for use in the next test.

[0066] The foregoing description enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A water quality sensor, comprising a mounting box (1), characterized in that: The installation box (1) is equipped with a temperature detection component (12) and an ultraviolet detection component (11) inside. The installation box (1) is equipped with a controller (2) on the outside. The controller (2) is equipped with a temperature compensation module inside. The temperature detection component (12) includes a vertical tube (13), a temperature sensor (15) is fixed on the outside of the vertical tube (13), and the detection end of the temperature sensor (15) is located inside the vertical tube (13). The ultraviolet detection component (11) includes a transparent shell (16), the vertical tube (13) is connected to the transparent shell (16), an outer bracket (17) is fixed on the outside of the transparent shell (16), an ultraviolet lamp (18) and a light source receiver (19) are fixed at both ends of the outer bracket (17), and the ultraviolet lamp (18) and the light source receiver (19) are electrically connected to the controller (2). One side of the vertical tube (13) protrudes outward and forms a cavity. A shafted impeller (20) is rotatably mounted on both sides of the cavity. A small generator (14) is fixed on the outside of the vertical tube (13). The input shaft of the small generator (14) is coaxially fixed with the impeller. A current sensor electrically connected to the controller (2) is installed inside the controller (2), and the small generator (14) is electrically connected to the current sensor. The installation box (1) is equipped with a conductivity detection component (10), which includes a transparent box (21). The transparent box (21) is equipped with a detection mechanism (23) for detecting conductivity. The transparent box (21) is connected to the transparent shell (16). The detection mechanism (23) includes four electrode plates (34). The four electrode plates (34) are divided into two pairs and are respectively arranged on both sides of the inside of the transparent box (21). The inside of the transparent box (21) is provided with a replacement mechanism (33). The replacement mechanism (33) causes the two electrode plates (34) on the same side to be replaced vertically. The electrode plate (34) located below is in a vertical state, and the electrode plate (34) located above is in a horizontal state.

2. A water quality sensor according to claim 1, characterized in that: A non-contact water level sensor (22) is fixedly installed on the outside of the transparent box (21), and the non-contact water level sensor (22) is electrically connected to the controller (2).

3. A water quality sensor according to claim 2, characterized in that: The installation box (1) is equipped with a water pump (3), and the water pump (3) is equipped with a flow sensor that is electrically connected to the controller (2).

4. A water quality sensor according to claim 3, characterized in that: The suction end of the water pump (3) is equipped with a third pipe (6), and a first solenoid valve (4) connected to it is installed on the third pipe (6). A first pipe (53) is provided between the outlet end of the water pump (3) and the vertical pipe (13) to connect the two. A fourth pipe (9) connected to it is fixed at the bottom of the transparent box (21), and a third solenoid valve (8) connected to it is installed on the fourth pipe (9). A second pipe (5) connecting the third pipe (6) and the fourth pipe (9) is provided between them, and a second solenoid valve (7) connected to it is installed on the second pipe (5). The first solenoid valve (4), the second solenoid valve (7) and the third solenoid valve (8) are all electrically connected to the controller (2).

5. A water quality sensor according to claim 1, characterized in that: The replacement mechanism (33) includes a fixed cylinder (41), one end of which is fixed with a transparent box (21). A cam cylinder (40) coaxially arranged with the fixed cylinder (41) is fixed to the transparent box (21). A cam groove is formed on the outer side of the cam cylinder (40), consisting of a first incomplete annular groove (50), a second incomplete annular groove (51), and two through grooves (52). The two ends of the through grooves (52) are respectively connected to the first incomplete annular groove (50) and the second incomplete annular groove (51). The fixed cylinder... A rotating ring (42) is rotatably mounted on the outer side of (41). Two notches are opened on the outer side of the rotating ring (42). A gear with a shaft (44) is rotatably mounted inside the notches. A fixing rod (45) is fixed to both ends of the gear with a shaft (44). One end of the fixing rod (45) is fixed to the electrode plate (34). A toothed plate (46) meshes with the gear with a shaft (44) inside the notches. A cylindrical block is rotatably mounted on one end of the toothed plate (46), and the cylindrical block is located in a cam groove. The toothed plate (46)... Guide grooves (47) are provided on both sides of the notch. Guide blocks with an integral structure with the rotating ring (42) are provided on both sides of the notch and are located in the guide grooves (47). A fixing frame (43) is fixed on the ring surface of the rotating ring (42). A synchronizing rod (32) coaxially arranged with the rotating ring (42) is fixed between the two fixing frames (43). A small servo motor (29) electrically connected to the controller (2) is fixed on the top of the transparent box (21). The output shaft of the small servo motor (29) is fixed with its... A first bevel gear (30) is coaxially arranged, and a second bevel gear (31) is fixed on the outside of the synchronizing rod (32) and is coaxially arranged with it and meshes with the first bevel gear (30). An insertion port is opened at the bottom of the outer side of the fixed cylinder (41). A conductive sheet (49) is fixed inside the insertion port. A conductive rod (48) is fixed at one end of the conductive sheet (49). One end of the conductive rod (48) leads out of the transparent box (21). An AC power supply is installed inside the controller (2). The AC power supply is connected to the two conductive rods (48) through wires.

6. A water quality sensor according to claim 5, characterized in that: An ammeter (35) electrically connected to the controller (2) is fixed at one end of the outer side of the transparent box (21). Two wire tubes (37) are fixed inside the transparent box (21). The two detection lines of the ammeter (35) are set in the two wire tubes (37). A brush (36) electrically connected to the detection lines is fixed at one end of the wire tube (37).

7. A water quality sensor according to claim 6, characterized in that: The electrode plate (34) has a Z-shaped cross-section. A water flow channel (24) is provided inside the transparent box (21). One end of the electrode plate (34) located at the top is located inside the water flow channel (24). A connecting pipe (26) connected to the flow channel (52) is fixed on the outside of the transparent box (21). A water storage cylinder (25), a filter pipe (28), and a small water pump (27) connected to the connecting pipe (26) are installed on the connecting pipe (26). The small water pump (27) is located between the water storage cylinder (25) and the filter pipe (28). Between the filter tubes (28), the inside of the water storage tank (25) is filled with pure water, the inside of the filter tubes (28) is filled with filter elements, the small water pump (27) is electrically connected to the controller (2), and four fixing plates (38) are fixed inside one end of the transparent box (21). The four fixing plates (38) are divided into two pairs and are respectively set on both sides of one end of the transparent box (21). A sponge (39) is fixed on the opposite side of each pair of fixing plates (38), and a soft brush is embedded inside the sponge (39).

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