Water quality sensor

Abstract

The invention discloses a water quality sensor, and relates to the technical field of water quality detection, the water quality sensor comprises a mounting box, the mounting box is internally provided with a temperature detection assembly and an ultraviolet detection assembly, the outer side of the mounting box is provided with a controller, and the controller is internally provided with a temperature compensation module; the temperature detection assembly comprises a vertical pipe, a temperature sensor is fixed to the outer side of the vertical pipe, and the detection end of the temperature sensor is located in the vertical pipe. The ultraviolet detection assembly comprises a transparent shell, and the vertical pipe is communicated with the transparent shell. A temperature compensation module is arranged, the power of an ultraviolet lamp irradiating sample water quality at the temperature of T + 0.5 under the condition that the light transmittance is not changed is collected, collected data are input into a controller, when the temperature detected by a temperature sensor is n, the maximum integer value of n is taken, and the power of the ultraviolet lamp is calculated according to the maximum integer value of n. And the power of the ultraviolet lamp reaches the power of the ultraviolet lamp at the temperature of [n] + 0.5, so that the detection accuracy of the ultraviolet lamp is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and in particular to a water quality sensor. Background Art

[0002] Safe and pure water is the most important necessity for citizens. Human health and safety require that drinking water and other domestic water must meet a variety of health and environmental standards. If the water supply or source fluid is contaminated, thousands of homes and lives will be affected. Tampering and attacks on water supplies should not only be prevented, but also be detectable quickly.

[0003] After searching, the patent document with publication number CN112791445A discloses a device that can be installed on a faucet to detect the presence of one or more pollutants 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 pollutants. At least one of the one or more electronic receivers is an illumination sensor for detecting the degree of absorption of ultraviolet light (UV) from 250nm to 300nm. When water fills the sample chamber, the UV254LED is activated. The measurement circuit can calculate the total organic carbon (TOC) through the correlation of UV254 absorbance. The device can transmit pollution data such as TOC level to a remote device to remotely monitor tap water.

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

[0005] The object of the present invention is to provide a water quality sensor to solve the problems raised in the above background technology.

[0006] The technical solution of the present invention is: a water quality sensor, comprising an installation box, wherein a temperature detection component and an ultraviolet detection component are arranged inside the installation box, a controller is installed outside the installation box, and 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 a detection end of the temperature sensor is located inside the vertical tube;

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

[0009] Preferably, one side of the vertical pipe protrudes outward to form a cavity, and an impeller with a shaft is installed on both sides of the cavity for common rotation. A small generator is fixed on the outside of the vertical pipe, and the input shaft of the small generator is coaxially fixed with the impeller. A current sensor electrically connected to the controller is provided inside the controller, and an electrical connection is established between the small generator and the current sensor.

[0010] Preferably, a conductivity detection component is disposed inside the installation box, and the conductivity detection component comprises a transparent box, a detection mechanism for detecting conductivity is disposed inside the transparent box, and the transparent box is communicated with the transparent shell.

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

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

[0013] Preferably, a third pipeline is installed at the water suction end of the water suction pump, and a first solenoid valve connected thereto is installed on the third pipeline, a first pipeline connecting the water outlet end of the water suction pump and the vertical pipe is arranged between the two, a fourth pipeline connected thereto is fixed to the bottom of the transparent box, and a third solenoid valve connected thereto is installed on the fourth pipeline, a second pipeline connecting the third pipeline and the fourth pipeline is arranged between the two, and a second solenoid valve connected thereto is installed on the second pipeline, wherein 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 sheets, which are divided into two pairs and are respectively arranged on both sides of the transparent box. A replacement mechanism is provided on both sides inside the transparent box. The replacement mechanism replaces the two electrode sheets on the same side with each other in the upper and lower positions, so that the electrode sheet below is in a vertical state and the electrode sheet above is in a horizontal state.

[0015] Preferably, the replacement mechanism includes a fixed cylinder, one end of the fixed cylinder is fixed in a transparent box, the transparent box is fixed with a cam cylinder coaxially arranged with the fixed cylinder, a cam groove is provided on the outer side of the cam cylinder, the cam groove is composed of a first incomplete annular groove, a second incomplete annular groove and two through grooves, the two ends of the through groove are respectively connected with the first incomplete annular groove and the second incomplete annular groove, a rotating ring is rotatably installed on the outer side of the fixed cylinder, two notches are provided on the outer side of the rotating ring, a shaft gear is rotatably installed inside the notch, both ends of the shaft gear are fixed with fixed rods, one end of the fixed rod is fixed to the electrode sheet, a toothed plate meshing with the shaft gear is provided inside the notch, a cylindrical block is rotatably installed on one end of the toothed plate, and the cylindrical block is provided in the cam groove, and both sides of the toothed plate A guide groove is provided on both sides of the recess, and guide blocks with an integral structure with the rotating ring are provided on both sides of the recess, and the guide blocks are arranged in the guide grooves, a fixing frame is fixed on the annular surface of the rotating ring, and a synchronization rod coaxially arranged with the rotating ring is fixed between the two fixing frames, a small servo motor electrically connected to the controller is fixed on the top of the transparent box, a first bevel gear coaxially arranged with the small servo motor is fixed on the output shaft, a second bevel gear coaxially arranged with the small servo motor and meshing with the first bevel gear is fixed on the outer side of the synchronization rod, a socket is provided on the outer bottom of the fixed cylinder, a conductive sheet is fixed inside the socket, a conductive rod is fixed at one end of the conductive sheet, and one end of the conductive rod is led out of the transparent box, an AC power supply is installed inside the controller, and the AC power supply is connected to the two conductive rods through a wire.

[0016] Preferably, an ammeter electrically connected to the controller is fixed at one end of the outer side of the transparent box, two wire tubes are fixed inside the transparent box, two detection wires of the ammeter are arranged in the two wire tubes, and a brush electrically connected to the detection wire is fixed at one end of the wire tube.

[0017] Preferably, the cross-section of the electrode sheet is Z-shaped, a water flow groove is opened inside the transparent box, one end of the electrode sheet located at the top is located in the water flow groove, a connecting pipe connected to the flow groove is fixed on the outside of the transparent box, a water storage cylinder, a filter tube and a small water pump connected thereto are installed on the connecting pipe, the small water pump is located between the water storage cylinder and the filter tube, pure water is provided inside the water storage cylinder, a filter element is provided inside the filter tube, 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 arranged at two sides of one end of the transparent box, a sponge is fixed on one opposite side of each pair of fixing plates, and a soft brush is embedded inside the sponge.

[0018] The present invention provides a water quality sensor by improvement, which has the following beneficial effects compared with the prior art:

[0019] First, the present invention is provided with a temperature compensation module, which collects the power of the ultraviolet lamp irradiating the sample water quality at a temperature of T+0.5 (T is an integer) when the transmittance remains unchanged, 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] Second, the present invention detects water quality based on the TDS detection principle, that is, measuring the conductivity between two electrode sheets under AC power supply voltage. The present invention can clean the electrode sheets used for detection, because impurities adhere to the surface of the electrode sheets after a long time, which will affect the detection results. Cleaning can effectively improve the accuracy of the detection;

[0021] Third: ensure 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 have a greater impact on the impeller, thereby increasing the speed of the impeller and increasing the amount of current generated by the small generator per unit time. It can be seen that the turbidity of the water body 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

[0025] Figure 3 for Figure 2 Schematic diagram of the structure without installation box;

[0026] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at point A;

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

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the conductivity detection component of the present invention;

[0029] Figure 7This is a schematic diagram of the internal structure of the conductivity detection component of the present invention from a first viewing angle;

[0030] Figure 8 It is a schematic diagram of the structure of the conductivity detection component of the present invention from a second viewing angle;

[0031] Fig. 9 It is a schematic structural diagram of the detection mechanism of the present invention from the first viewing angle.

[0032] Fig.10 It is a schematic structural diagram of the detection mechanism of the present invention from a second viewing angle.

[0033] Fig.11 It is a schematic diagram of the three-dimensional structure of the displacement mechanism of the present invention.

[0034] Fig.12 for Fig.11 A partial cross-sectional view of .

[0035] Fig.13 It is a schematic diagram of the three-dimensional structure of the cam tube of the present invention.

[0036] Reference numerals:

[0037] 1. Installation box; 2. Controller; 3. Suction 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. Shaft impeller; 21. Transparent box; 22. Non-contact water level sensor; 23. Detection mechanism; 24. Water flow trough; 25. Water storage cylinder; 26. Connecting Tube; 27, small water pump; 28, filter tube; 29, small servo motor; 30, first bevel gear; 31, second bevel gear; 32, synchronization rod; 33, displacement mechanism; 34, electrode sheet; 35, ammeter; 36, brush; 37, wire tube; 38, fixed plate; 39, sponge; 40, cam tube; 41, fixed tube; 42, rotating ring; 43, fixed frame; 44, gear with shaft; 45, fixed rod; 46, tooth plate; 47, guide groove; 48, conductive rod; 49, conductive sheet; 50, first incomplete annular groove; 51, second incomplete annular groove; 52, through groove; 53, first pipeline. DETAILED DESCRIPTION

[0038] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The present invention provides a water quality sensor through improvement. The technical solution of the present invention is:

[0040] like Figures 1 to 8 As shown, an embodiment of the present invention provides a water quality sensor, including an installation box 1, a temperature detection component 12 and an ultraviolet detection component 11 are arranged inside the installation box 1, a controller 2 is installed outside the installation box 1, and a temperature compensation module is arranged inside the controller 2. Here, a supplementary description is given to the controller 2: a display is installed outside the controller 2. The controller 2 is a prior art, and its specific structure and working principle are not described in detail here;

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

[0042] The ultraviolet detection assembly 11 includes a transparent shell 16, the vertical tube 13 is connected to the transparent shell 16, an outer bracket 17 is fixed to the outside of the transparent shell 16, and 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 both electrically connected to the controller 2;

[0043] Among them, the operation method of the temperature compensation module is:

[0044] S1. Data collection: Keep the intensity of the light source received by the light source receiver 19 unchanged, and collect the power of the ultraviolet lamp 18 irradiating qualified water at a temperature of T+0.5, where T is an integer, i.e., 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 the temperature sensor 15, and the temperature sensor feeds back the detected temperature value n to the controller 2;

[0046] S3, data selection: select the temperature value = the maximum integer value of n + 0.5. If the detected temperature is 26.3 or 26.7, in order to reduce the 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] Through the above connection relationship, it can be known that: the water quality to be detected passes through the vertical pipe 13, and 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 the temperature of [n]+0.5. The light beam of the ultraviolet lamp 18 passes through the transparent shell 16, and the water quality to be detected in the transparent shell 16 absorbs part of the ultraviolet rays. The light source receiver 19 receives the unabsorbed ultraviolet rays, and the light source receiver 19 feeds back the received light source intensity signal to the controller 2. The controller 2 displays the numerical value on the display, which shows the transmittance of the water quality to be detected at the temperature [n]+0.5, and displays the transmittance of qualified water quality at the current temperature, so that the workers can compare and refer to determine whether the water quality is qualified.

[0049] Specifically, combined with Figure 4 and attached Figure 5 As shown, one side of the vertical pipe 13 protrudes outward and forms a cavity, and an impeller 20 with an axis is installed on both sides of the cavity for common rotation. A small generator 14 is fixed on the outside of the vertical pipe 13, and the input shaft of the small generator 14 is coaxially fixed with the impeller. A current sensor electrically connected to the controller 2 is provided inside, and the small generator 14 is electrically connected to the current sensor. It can be seen from the above connection relationship that when the flow rate of the water to be detected maintains 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 speed of the impeller and increasing the current generated by the small generator 14 per unit time. It can be seen that the turbidity of the water body can be judged according to the amount of current generated per unit time; at the same time, the generated current can be stored to achieve energy saving.

[0050] Specifically, combined with Figure 6 -Attached Fig.13 As shown, a conductivity detection component 10 is disposed inside the installation box 1. The conductivity detection component 10 includes a transparent box 21. The transparent box 21 is made of an insulating and corrosion-resistant material, and the specific material is not limited. A detection mechanism 23 for detecting conductivity is disposed inside the transparent box 21. The transparent box 21 is connected to the transparent shell 16.

[0051] Specifically, combined with 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 establishes an electrical connection with the controller 2. The non-contact water level sensor 22 is a prior art, and its specific structure and working principle are not elaborated in detail here. The non-contact water level sensor 22 is selected because the non-contact water level sensor 22 does not need to contact with water, and the measuring end of the non-contact water level sensor 22 will not pollute the water source, and will not affect the conductivity detection.

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

[0053] Specifically, combined with Figure 3 As shown, a third pipeline 6 is installed at the water suction end of the water suction pump 3, and a first solenoid valve 4 connected thereto is installed on the third pipeline 6, a first pipeline 53 connecting the water outlet end of the water suction pump 3 and the vertical pipe 13 is arranged between the two, a fourth pipeline 9 connected thereto is fixed at the bottom of the transparent box 21, and a third solenoid valve 8 connected thereto is installed on the fourth pipeline 9, a second pipeline 5 connecting the third pipeline 6 and the fourth pipeline 9 is arranged between the third pipeline 6 and the fourth pipeline 9, and a second solenoid valve 7 connected thereto is installed on the second pipeline 5, wherein 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 pipeline 6 The bottom end is introduced into the water source to be detected 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 into the water suction pump 3, and after passing through the first pipeline 53, the vertical pipe 13 and the transparent shell 16, it stays in the transparent box 21. The non-contact water level sensor 22 performs water level detection. When the water level reaches the specified position, the first solenoid valve 4 is closed, the second solenoid valve 7 is opened, and the third solenoid valve 8 remains closed, so that the water circulates among the water suction pump 3, the vertical pipe 13, the transparent shell 16 and the transparent box 21. In this way, the water quality can be detected multiple times to ensure the accuracy of the detection.

[0054] Specifically, combined with Figure 7 As shown, the detection mechanism 23 includes four electrode sheets 34, and the four electrode sheets 34 are divided into two pairs and are respectively arranged on both sides of the transparent box 21. Displacement mechanisms 33 are arranged on both sides inside the transparent box 21. The displacement mechanism 33 displaces the two electrode sheets 34 on the same side thereof in the upper and lower positions, and the electrode sheet 34 below is in a vertical state, and the electrode sheet 34 located above is in a horizontal state. It needs to be supplemented here that the water level only needs to be before the bending point of the lower electrode sheet 34.

[0055] Specifically, combined with Fig. 9 -Attached Fig.13 As shown, the replacement mechanism 33 includes a fixed cylinder 41, one end of which is fixed to the transparent box 21, and the transparent box 21 is fixed to a cam cylinder 40 coaxially arranged with the fixed cylinder 41; Fig.13 The cam tube 40 has a cam groove on its outer side, which is composed of a first incomplete annular groove 50, a second incomplete annular groove 51 and two through grooves 52. The two ends of the through groove 52 are respectively connected to the first incomplete annular groove 50 and the second incomplete annular groove 51. Fig.11A rotating ring 42 is rotatably installed on the outer side of the fixed cylinder 41, and two recesses are provided on the outer side of the rotating ring 42. A shaft gear 44 is rotatably installed inside the recess. Fixed rods 45 are fixed at both ends of the shaft gear 44, and one end of the fixed rod 45 is fixed to the electrode sheet 34. A toothed plate 46 meshing with the shaft gear 44 is provided inside the recess. A cylindrical block is rotatably installed at one end of the toothed plate 46, and the cylindrical block is arranged in the cam groove. Guide grooves 47 are provided on both sides of the toothed plate 46. Guide blocks with an integral structure with the rotating ring 42 are provided on both sides of the recess, and the guide blocks are arranged in the guide grooves 47. A fixed frame 43 is fixed to the annular surface of the rotating ring 42, and a synchronization rod 32 coaxially arranged with the rotating ring 42 is fixed between the two fixed frames 43. A small device for establishing an electrical connection with the controller 2 is fixed on the top of the transparent box 21. Servo motor 29, the output shaft of the small servo motor 29 is fixed with a first bevel gear 30 coaxially arranged therewith, the outer side of the synchronization rod 32 is fixed with a second bevel gear 31 coaxially arranged therewith and meshing with the first bevel gear 30, a socket is provided at the outer bottom of the fixed cylinder 41, a conductive sheet 49 is fixed inside the socket, a conductive rod 48 is fixed at one end of the conductive sheet 49, one end of the conductive rod 48 is led 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 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, two detection wires of the ammeter 35 are arranged in the two wire tubes 37, and a brush 36 electrically connected to the detection wire is fixed at one end of the wire tube 37;

[0056] Supplementary explanation of controller 2: Controller 2 has a built-in conductivity algorithm (consistent with the conductivity algorithm used for TDS detection), which is a prior art and will not be elaborated on in detail here. Controller 2 is internally provided with a temperature compensation algorithm adapted to TDS detection, which is also a prior art and will not be elaborated on in detail here. Here is an example of a prior art temperature compensation algorithm: TDS = 0.55K; with 25°C as the standard temperature, the conductivity increases by 2% for every 1°C increase in temperature, so the temperature is used as a compensation factor in TDS calculation, and the formula is: K = K (final temperature compensation) ÷ (1 + 0.02* (T-25)), where T is the measured solution temperature value;

[0057] It can be known from the above connection relationship that the conductivity detection component 10 detects water quality based on the TDS detection principle, and measures the conductivity between the two electrode sheets 34 under the AC power supply voltage, that is, the ammeter 35 detects the current size, and the ammeter 35 feeds back the detected current to the controller 2, and the controller 2 has a built-in conductivity algorithm (consistent with the conductivity algorithm used for TDS detection) for calculation; when the electrode sheet 34 has worked for a period of time, the small servo motor 29 rotates the first bevel gear 30 through the output shaft, and the first bevel gear 30 drives the synchronization rod 32 to rotate through the second bevel gear 31 meshing with it, and the fixing frames 43 on both ends of the synchronization rod 32 rotate with the synchronization rod 32, and the fixed frame 43 on the two ends of the synchronization rod 32 rotates with the synchronization 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 electrode sheet 34 located below, the cylindrical block on one end of the lower tooth plate 46 enters from the first incomplete ring groove 50 into the second incomplete ring groove 51, and the tooth plate 46 is pulled back. The tooth plate 46 moves the shaft gear 44 engaged therewith, and the shaft gear 44 drives the fixed rod 45 to rotate 90 degrees, so that the electrode sheet 34 is turned from a vertical state to a horizontal state. It can be seen that during the downward displacement process of the original upper electrode sheet 34, it changes from a horizontal state to a vertical state. When it is completely placed below, the original upper electrode sheet 34 contacts the conductive sheet 49, thereby energizing.

[0058] Specifically, combined with Fig. 9As shown, the cross section of the electrode sheet 34 is Z-shaped, a water flow groove 24 is provided inside the transparent box 21, one end of the electrode sheet 34 located at the top is located in the water flow groove 24, a connecting pipe 26 connected to the flow groove 52 is fixed on the outside of the transparent box 21, a water storage cylinder 25, a filter tube 28 and a small water pump 27 connected thereto are installed on the connecting pipe 26, the small water pump 27 is located between the water storage cylinder 25 and the filter tube 28, the water storage cylinder 25 is provided with pure water, the filter tube 28 is provided with 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 arranged at 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 in the sponge 39; the lower electrode sheet 34 rotates upwards During the process, the cylindrical block on one end of the lower tooth plate 46 enters from the first incomplete annular groove 50 into the second incomplete annular groove 51, the tooth plate 46 is pulled back, and the tooth plate 46 moves the shaft gear 44 meshing with it, and the shaft gear 44 drives the fixing rod 45 to rotate ninety degrees, so that the electrode sheet 34 is changed from a vertical state to a horizontal state. At this time, one end of the electrode sheet 34 is located in the water flow groove 24, and the small water pump 27 is started to make the pure water in the water storage cylinder 25 flow through the water flow groove 24, the filter tube 28 and the water storage cylinder 25 in turn, that is, the three circulate to rinse the electrode sheet 34; during the downward displacement of the original upper electrode sheet 34, during the process of changing from a horizontal state to a vertical state, the original upper electrode sheet 34 is in the vertical plane in advance, and then passes through the sponge 39, the sponge 39 wipes the moisture of the electrode sheet 34, and the soft brush inside the sponge 39 can clean the electrode sheet 34 again.

[0059] Working principle:

[0060] The first step is to introduce a water source: the bottom end of the third pipeline 6 is introduced into the water source to be detected 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 suction pump 3, and after passing through the first pipeline 53, the vertical pipe 13 and the transparent shell 16, it stays in the transparent box 21. The non-contact water level sensor 22 performs water level detection. When the water level reaches the specified position, the first solenoid valve 4 is closed, the second solenoid valve 7 is opened, and the third solenoid valve 8 remains closed, so that the water circulates among the water suction pump 3, the vertical pipe 13, the transparent shell 16 and the transparent box 21;

[0061] The second step is to conduct tests, which include the following:

[0062] (1) When the flow rate of the water to be tested is maintained 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 speed of the impeller and increasing the amount of current generated per unit time by the small generator 14. It can be seen that the degree of turbidity of the water body can be judged according to the amount of current generated per unit time;

[0063] (2) The water to be tested passes through the vertical pipe 13, and 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 the temperature [n] + 0.5. The light beam of the ultraviolet lamp 18 passes through the transparent shell 16. The water to be tested in the transparent shell 16 absorbs part of the ultraviolet rays, and the light source receiver 19 receives the unabsorbed ultraviolet rays. The light source receiver 19 feeds back the received light source intensity signal to the controller 2. The controller 2 displays the numerical value on the display, which shows the transmittance of the water to be tested at the temperature [n] + 0.5, and the transmittance of the qualified water at the current temperature, so that the workers can compare and refer to determine whether the water quality is qualified.

[0064] (3) Measuring the conductivity between the two electrode sheets 34 under the voltage of the AC power supply, that is, the ammeter 35 detects the current size, 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) for calculation;

[0065] In the third step, after the detection is completed, the third solenoid valve 8 is opened to drain water. After the drainage is completed, 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 fixed frames 43 on both ends of the synchronous rod 32 rotate with the synchronous rod 32, and 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 electrode sheet 34 located below, the cylindrical block on one end of the tooth plate 46 below enters from the first incomplete annular groove 50 into the second incomplete annular groove 51, and the tooth plate 46 is pulled back, and the tooth plate 46 toggles the gear 44 meshing with it. The wheel 44 drives the fixed rod 45 to rotate 90 degrees, so that the electrode sheet 34 changes from a vertical state to a horizontal state. At this time, one end of the electrode sheet 34 is located in the water flow trough 24, and the small water pump 27 is started to make the pure water in the water storage cylinder 25 flow through the water flow trough 24, the filter tube 28 and the water storage cylinder 25 in turn, that is, the three circulate to rinse the electrode sheet 34. During the downward displacement of the original upper electrode sheet 34 and the change from a horizontal state to a vertical state, the original upper electrode sheet 34 is in the vertical plane in advance, and then passes through the sponge 39. The sponge 39 wipes the moisture off the electrode sheet 34. At the same time, the soft brush inside the sponge 39 can clean the electrode sheet 34 again. The electrode sheet 34 is left for use in the next detection.

[0066] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be 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 present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to 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 provided with a temperature detection component (12) and an ultraviolet detection component (11) inside, a controller (2) is installed outside the installation box (1), and a temperature compensation module is provided inside the controller (2); The temperature detection component (12) comprises a vertical tube (13), a temperature sensor (15) is fixed on the outside of the vertical tube (13), and a detection end of the temperature sensor (15) is located inside the vertical tube (13); The ultraviolet detection component (11) comprises a transparent shell (16), the vertical pipe (13) is connected to the transparent shell (16), an outer bracket (17) is fixed to the outer side of the transparent shell (16), an ultraviolet lamp (18) and a light source receiver (19) are respectively fixed to the two ends of the outer bracket (17), and the ultraviolet lamp (18) and the light source receiver (19) are both electrically connected to the controller (2).

2. A water quality sensor according to claim 1, characterized in that: One side of the vertical pipe (13) protrudes outward to form a cavity, and an impeller (20) with an axis is installed on both sides of the cavity for co-rotation. A small generator (14) is fixed on the outside of the vertical pipe (13), and the input shaft of the small generator (14) is coaxially fixed with the impeller. A current sensor electrically connected to the controller (2) is provided inside the controller (2), and the small generator (14) is electrically connected to the current sensor.

3. A water quality sensor according to claim 1, characterized in that: A conductivity detection assembly (10) is arranged inside the installation box (1), and the conductivity detection assembly (10) comprises a transparent box (21). A detection mechanism (23) for detecting conductivity is arranged inside the transparent box (21), and the transparent box (21) is connected to a transparent shell (16).

4. A water quality sensor according to claim 3, characterized in that: A non-contact water level sensor (22) is fixedly mounted on the outside of the transparent box (21), and the non-contact water level sensor (22) is electrically connected to the controller (2).

5. A water quality sensor according to claim 4, characterized in that: A water suction pump (3) is fixedly installed inside the installation box (1), and a flow sensor electrically connected to the controller (2) is arranged inside the water suction pump (3).

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

7. A water quality sensor according to claim 3, characterized in that: The detection mechanism (23) comprises four electrode sheets (34), the four electrode sheets (34) are divided into two pairs and are respectively arranged on both sides of the inside of the transparent box (21), and a replacement mechanism (33) is arranged on both sides of the inside of the transparent box (21), and the replacement mechanism (33) causes the two electrode sheets (34) on the same side to be replaced in the upper and lower positions, so that the electrode sheet (34) located at the bottom is in a vertical state, and the electrode sheet (34) located at the top is in a horizontal state.

8. A water quality sensor according to claim 7, characterized in that: The replacement mechanism (33) comprises a fixed cylinder (41), one end of which is fixed with a transparent box (21), the transparent box (21) being fixed with a cam cylinder (40) coaxially arranged with the fixed cylinder (41), the outer side of the cam cylinder (40) being provided with a cam groove, the cam groove being composed of a first incomplete annular groove (50), a second incomplete annular groove (51) and two through grooves (52), the two ends of the through groove (52) being respectively connected with 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 the rotating ring (42), two notches are provided on the outer side of the rotating ring (42), a shaft gear (44) is rotatably mounted inside the notch, both ends of the shaft gear (44) are fixed with fixing rods (45), one end of the fixing rod (45) is fixed to the electrode sheet (34), a tooth plate (46) meshing with the shaft gear (44) is provided inside the notch, one end of the tooth plate (46) is rotatably mounted with a cylindrical block, and the cylindrical block is provided in the cam groove, and the tooth plate (46) is Guide grooves (47) are provided on both sides of the recess, guide blocks which are integrally structured with the rotating ring (42) are provided on both sides of the recess, and the guide blocks are arranged in the guide grooves (47), a fixing frame (43) is fixed on the annular surface of the rotating ring (42), a synchronization rod (32) which is coaxially arranged with the rotating ring (42) is fixed between the two fixing frames (43), a small servo motor (29) which is electrically connected to the controller (2) is fixed on the top of the transparent box (21), and an output shaft of the small servo motor (29) is fixed with a servo motor (32) which is coaxially arranged with the rotating ring (42) A first bevel gear (30) is coaxially arranged, and a second bevel gear (31) coaxially arranged and meshing with the first bevel gear (30) is fixed on the outer side of the synchronization rod (32). A socket is provided at the outer bottom of the fixed cylinder (41), and a conductive sheet (49) is fixed inside the socket. A conductive rod (48) is fixed at one end of the conductive sheet (49), and one end of the conductive rod (48) is led out of the transparent box (21). An AC power supply is installed inside the controller (2), and the AC power supply is connected to the two conductive rods (48) through a wire.

9. A water quality sensor according to claim 7, 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), two detection wires of the ammeter (35) are arranged in the two wire tubes (37), and a brush (36) electrically connected to the detection wire is fixed at one end of the wire tube (37).

10. A water quality sensor according to claim 8, characterized in that: The cross section of the electrode sheet (34) is in a Z shape. A water flow groove (24) is provided inside the transparent box (21). One end of the electrode sheet (34) located at the top is located in the water flow groove (24). A connecting pipe (26) connected to the flow groove (52) is fixed on the outside of the transparent box (21). A water storage cylinder (25), a filter tube (28) and a small water pump (27) connected thereto are installed on the connecting pipe (26). The small water pump (27) is located between the water storage cylinder (25) and the filter tube (28). The filter tube (28) is provided with pure water inside the water storage cylinder (25), the filter tube (28) is provided with a filter core inside, the small water pump (27) is electrically connected to the controller (2), one end of the transparent box (21) is internally fixed with four fixing plates (38), the four fixing plates (38) are divided into two pairs and are respectively arranged at two 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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