Water purification terminal based on Internet of Things

Abstract

The invention discloses a water purification terminal based on Internet of Things, and belongs to the technical field of water purification equipment, the water purification terminal comprises a bottom shell and a top cover, the top cover covers the outer surface of the bottom shell through a screw thread sleeve, an annular opening is fixedly mounted at the top in the bottom shell, an activated carbon filter element is arranged at the upper end of the annular opening, and an extension top contact type locking mechanism is fixedly mounted on the lower surface in the bottom shell. The distance between the ring openings is reduced from large to small, so that the filter bottle is inserted through a T-shaped column mounted at the top and then is gradually screwed, the filter bottle and the activated carbon filter element can be mounted on the outer surfaces of the two groups of threaded nozzles through screw threads of the nut cover, and the other ends of the threaded nozzles are communicated with the water quality detection mechanism. Through the design of the water quality detection mechanism and the extension top contact type locking mechanism, the locking mechanism can conveniently fix or adjust equipment, the detection mechanism uses a double-ring pipe and a sensor to measure raw water and purified water parameters, a double-shaft motor cleans a probe, water flows through an activated carbon filter element and a filter bottle for multi-stage purification, and drinking water safety is guaranteed in all directions.

Description

Technical Field

[0001] This invention relates to the field of water purification equipment technology, specifically to a water purification terminal based on the Internet of Things. Background Technology

[0002] With increasing health awareness among residents, household drinking water safety has become a core issue of public concern. While household water purification equipment is now widespread, traditional products generally suffer from three major pain points: First, water quality monitoring relies on regular manual testing, which cannot capture real-time fluctuations in raw water and the decline in purification effectiveness, easily leading to safety hazards such as "filter failure without replacement" and "unawareness of water quality exceeding standards." Second, equipment installation is limited by home cabinet space; traditional fixed structures are difficult to adapt to installation environments of different sizes, and subsequent maintenance involves cumbersome filter removal and pipeline adjustments. Third, the lack of intelligent interaction and remote management capabilities means users cannot monitor the equipment's operating status anytime, anywhere, affecting ease of use and posing a risk of household property loss.

[0003] Chinese patent CN120518149A discloses a multifunctional water purifier, including a housing with a panel and a water outlet at the bottom. The housing also has a base at the bottom facing the water outlet. The purifier further includes: a groove at the center of the upper part of the base, within which a coupler is movably mounted; a cover rotatably mounted on the base to cover the groove; and a drive assembly for driving the cover to rotate and open the groove first, then driving the coupler to rise and extend out of the groove, or vice versa, driving the coupler to descend and retract into the groove first, then driving the cover to rotate and cover the groove. This invention, through the sequential driving of the drive assembly, allows the cover to rotate and open the groove first, then the coupler to rise and extend out of the groove for normal use. During the coupler's idle period, the coupler can be driven to descend and retract into the groove first, then the cover can rotate and cover the groove, thus preventing water droplets or external factors from wetting the coupler and ensuring safe use.

[0004] However, while the aforementioned multi-functional water purifiers address safety concerns when the equipment is idle through the lifting and covering structure of the coupler, they fail to address core needs such as real-time water quality monitoring, installation compatibility optimization, and intelligent management. They focus only on the safety of local structures and cannot provide real-time feedback on water purification effects. Users still need to manually determine whether the filter cartridge has failed. Furthermore, the fixed housing design of the device limits installation flexibility when considering the spatial differences in different household cabinets. Replacing the filter cartridge or maintaining the pipeline requires disassembling numerous parts, resulting in poor operational convenience. In addition, the lack of an interactive link with the user terminal prevents remote status monitoring or fault warnings, making it difficult for users to detect problems in a timely manner. This still poses risks of use and potential property damage, failing to meet the current comprehensive needs of households for "intelligent, convenient, and safe" water purification equipment. Summary of the Invention

[0005] The purpose of this invention is to provide an Internet of Things-based water purification terminal to solve the problems mentioned in the background art, such as the inability of water purification equipment to monitor water quality in real time, poor installation adaptability, and lack of intelligent remote management capabilities. At the same time, it makes up for the shortcomings of existing patents that only focus on local security protection and ignore comprehensive functional upgrades.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An IoT-based water purification terminal includes: a bottom shell and a top cover. The top cover is screwed onto the outer surface of the bottom shell. An annular opening is fixedly installed inside the top of the bottom shell. An activated carbon filter element is disposed at the upper end of the annular opening. The activated carbon filter element is fixedly installed at one end of the top of the bottom shell by a buckle fitted on the outer surface. An extended top-contact locking mechanism is fixedly installed on the lower inner surface of the bottom shell. The extended top-contact locking mechanism extends from both ends of the bottom shell and abuts against both sides inside the cabinet to achieve locking.

[0008] The spacing of the ring openings decreases from large to small, allowing the filter bottle to be inserted through the T-shaped column installed at the top and then gradually tightened. Each set of filter bottles and activated carbon filter elements has a guide tube installed at both ends. The other ends of the two sets of guide tubes are respectively provided with a threaded head and a nut cap that is rotatably installed. This allows the activated carbon filter element to be threaded onto the outer surface of the threaded head of the first set of filter bottles through the nut cap. The filter bottles can be connected to each other by being threaded onto the outer surface of the threaded head of the other set of filter bottles through the nut cap.

[0009] Among them, the last set of filter bottles and activated carbon filter elements remaining after connection can be installed on the outer surface of two sets of threaded nozzles by means of nut cap threads. These two sets of threaded nozzles are fixedly installed inside one end of the top cover, and the other end of the threaded nozzles is connected to the water quality testing mechanism, which is fixedly installed at one end of the top cover.

[0010] The water quality testing mechanism has two ends, one for injecting tap water and the other for purifying and discharging it. The injected tap water passes through the activated carbon filter and multiple filter bottles in sequence and then discharges purified water from the lower end of the water quality testing mechanism. This flow path design enables the water quality testing mechanism to simultaneously achieve dual detection functions: real-time monitoring of the raw water quality entering the system and accurate detection of the effluent water quality after purification by the filter set. The detection data is then sent to the controller in real time. The controller is fixedly installed on one side of the outer surface of the bottom shell.

[0011] Preferably, the controller integrates an IoT communication module and a data processing unit, wherein the IoT communication module adopts 5G / NB-IoT dual-mode communication technology, automatically adapts to the home network environment, and establishes an encrypted connection with the cloud server.

[0012] Preferably, the data processing unit receives raw water and purified water data transmitted by the water quality testing agency in real time, including TDS value, residual chlorine content, pH value, etc., and performs data sampling and analysis every two seconds. When a parameter is detected to exceed a preset threshold, such as purified water TDS value > 50ppm, the controller can push alarm information containing abnormal parameter details to the user APP through the Internet of Things communication module.

[0013] Preferably, windows are provided at both ends of the bottom shell, and the protective cover is installed in the window in a damped rotatable manner. The protective cover is threadedly installed in the window at one end of the bottom shell by a wing bolt to achieve closure.

[0014] Preferably, the extended top-contact locking mechanism includes scissor-type telescopic arms, which are disposed on the lower inner surface of the bottom shell. Two sets of rotating rods hinged between the scissor-type telescopic arms slide in guide rail grooves. The guide rail grooves are opened at the center of the lower inner surface of the bottom shell to provide sliding guidance for the rotating rods. Rollers are rotatably mounted on two sets of connecting arms at both ends of the scissor-type telescopic arms. The rollers roll in U-shaped top blocks, which are slidably installed in the joint between the bottom shell and the top cover.

[0015] Preferably, a connecting plate is rotatably mounted on the upper surface of the hinge joint of two sets of connecting arms at one end of the middle of the scissor telescopic arm. A threaded rod passes through the connecting plate, and the threaded rod is rotatably mounted inside the bottom shell. One end of the threaded rod passes through the outer surface of the bottom shell and is fixedly mounted with a handwheel. When the handwheel is rotated to drive the threaded rod to rotate, the connecting plate will be driven to move along the axial direction of the threaded rod, thereby pushing the scissor telescopic arm to unfold or retract. This causes the rollers at both ends to roll towards the center or outward on the U-shaped top block and push it out or pull it back. The U-shaped top block that is pushed up can touch the two sides inside the cabinet, thereby locking and fixing the water purification terminal inside the cabinet.

[0016] Preferably, the water quality testing mechanism includes two sets of ring tubes, each connected to two sets of threaded nozzles. The outer surfaces of both sets of ring tubes are internally connected with three sets of threaded grooves, which are used to thread the TDS sensor, residual chlorine sensor, and pH sensor, respectively. After tightening, the detection arc probe will be inserted into the ring tube and kept parallel to the central axis of the ring tube to ensure full contact with the water flow. A food-grade silicone sealing ring is installed between the threaded groove and the sensor.

[0017] Preferably, the upper and lower surfaces of the two sets of ring pipes are respectively connected and installed with an inlet pipe and an outlet pipe.

[0018] Preferably, the signal transmitting ends of the TDS sensor, residual chlorine sensor, and pH sensor are all connected to the signal receiving end of the controller. The models of the TDS sensor, residual chlorine sensor, pH sensor, and controller are HM-TDS-02, CL-100, PHG-210, and STM32F407VET6, respectively.

[0019] Preferably, an installation cylinder is fixedly installed between the two sets of ring tubes. A dual-axis motor is fixedly installed inside the installation cylinder. The output shafts at the upper and lower ends of the dual-axis motor are both rotated through sealed bearings into the ring tube and fixedly connected to the scraping ring. The scraping ring is rotatably installed inside the ring tube and has a shovel blade on its outer surface. This allows the scraping ring to rotate under the drive of the dual-axis motor, thereby driving the shovel blade to scrape across the arc-shaped probe surfaces of the TDS sensor, residual chlorine sensor, and pH sensor. The dual-axis motor is controlled by a controller.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. Through the linkage structure of handwheel, threaded rod and scissor telescopic arm, it can be fixed without drilling holes in the cabinet. Turning the handwheel clockwise will push the U-shaped top block to contact the inner wall of the cabinet. With the double fixation of the clamping force and the support of the scissor structure, it can prevent displacement caused by water flow impact or contact. Turning the handwheel in the opposite direction can disassemble and adjust without damaging the cabinet and can adapt to the family cabinet space of different widths. Compared with the traditional screw fixing method, it saves complicated steps such as drilling and positioning. Ordinary users can complete the installation without professional tools, which greatly improves the deployment efficiency.

[0022] 2. Two sets of loop pipes are used to test the raw water and purified water respectively. The TDS, residual chlorine and pH sensor probes are inserted into the pipe cavity and parallel to the water flow to ensure accurate data. At the same time, the dual-axis motor drives the scraper to clean the probes at regular intervals to avoid scale and impurities affecting the accuracy. The food-grade silicone sealing ring at the threaded connection can also prevent leakage. The sensor transmits data to the controller every two seconds. The controller compares the threshold in real time. If the standard is met, a water quality report is pushed. If the standard is exceeded, an alarm is immediately issued. It can also judge the filter cartridge wear based on the difference between the raw water and purified water parameters and remind you to replace it in time. From detection, analysis to early warning, a closed loop is formed to comprehensively protect the safety of family drinking water. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the IoT-based water purification terminal of the present invention;

[0024] Figure 2 This is a schematic diagram of the extended top-contact locking mechanism of the present invention extending from both ends of the bottom shell;

[0025] Figure 3 This is a schematic diagram of the activated carbon filter element and filter bottle of the present invention;

[0026] Figure 4 This is a schematic diagram of the bottom shell and the annular opening of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the threaded head and nut cap of the present invention;

[0028] Figure 6 This is a schematic diagram of the T-shaped column of the present invention;

[0029] Figure 7 This is a schematic diagram of the extended top-contact locking mechanism of the present invention;

[0030] Figure 8 This is a schematic diagram of the ring tube, mounting cylinder, and dual-axis motor of the present invention.

[0031] Figure 9 This is a schematic diagram of the water quality testing mechanism of the present invention.

[0032] In the diagram: 1. Bottom shell; 101. Top cover; 102. Protective cover; 103. Controller; 104. Filter bottle; 105. Ring mouth; 106. Threaded nozzle; 107. Activated carbon filter element; 108. Snap fastener; 109. Guide pipe; 110. Threaded head; 111. Nut cover; 112. T-shaped column; 113. Guide rail groove; 2. Water quality testing mechanism; 201. Mounting cylinder; 202. Dual-axis motor; 203. Ring pipe; 204. Inlet pipe; 205. TDS sensor; 206. Residual chlorine sensor; 207. pH sensor; 208. Scraper ring; 209. Shovel blade; 210. Outlet pipe; 3. Extended top-contact locking mechanism; 301. Scissor telescopic arm; 302. Connecting plate; 303. Threaded rod; 304. Handwheel; 305. Roller; 306. U-shaped top block. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figures 1-7As shown, an IoT-based water purification terminal includes: a bottom shell 1 and a top cover 101. The top cover 101 is screwed onto the outer surface of the bottom shell 1. An annular opening 105 is fixedly installed at the top inside the bottom shell 1. An activated carbon filter element 107 is provided at the upper end of the annular opening 105. The activated carbon filter element 107 is fixedly installed at one end of the top of the bottom shell 1 by a buckle 108 fitted on the outer surface. An extended top-contact locking mechanism 3 is fixedly installed on the lower inner surface of the bottom shell 1. The extended top-contact locking mechanism 3 extends from both ends of the bottom shell 1 and contacts both sides inside the cabinet to achieve locking.

[0035] The spacing of the rings 105 decreases from large to small, allowing the filter bottles 104 to be inserted through the top-mounted T-shaped post 112 and then gradually tightened. Each set of filter bottles 104 and activated carbon filter element 107 has a guide tube 109 connected to both ends. The other ends of the two sets of guide tubes 109 are respectively provided with a threaded head 110 and a nut cap 111 rotatably installed, so that the activated carbon filter element 107 is threaded onto the outer surface of the threaded head 110 of the first set of filter bottles 104 through the nut cap 111. The filter bottles 104 can be connected to each other by being threaded onto the outer surface of the threaded head 110 of the other set of filter bottles 104 through the nut cap 111.

[0036] Among them, the last set of filter bottles 104 and activated carbon filter element 107 remaining after connection can be installed on the outer surface of two sets of threaded nozzles 106 by the nut cap 111 thread. These two sets of threaded nozzles 106 are fixedly installed inside one end of the top cover 101, and the other end of the threaded nozzles 106 is connected to the water quality testing mechanism 2. The water quality testing mechanism 2 is fixedly installed at one end of the top cover 101.

[0037] The water quality testing mechanism 2 has tap water injected into its upper and lower ends and purified water discharged from its lower end. The injected tap water passes through the activated carbon filter element 107 and multiple filter bottles 104 in sequence and is then discharged as purified water from the lower end of the water quality testing mechanism 2. This flow path design enables the water quality testing mechanism 2 to simultaneously achieve dual detection functions, which not only monitors the quality of the raw water entering the system in real time, but also accurately detects the quality of the effluent water after purification by the filter element group, and sends its detection data to the controller 103 in real time. The controller 103 is fixedly installed on one side of the outer surface of the bottom shell 1.

[0038] The controller 103 integrates an IoT communication module and a data processing unit. The IoT communication module adopts 5G / NB-IoT dual-mode communication technology, automatically adapts to the home network environment, and establishes an encrypted connection with the cloud server.

[0039] The data processing unit receives raw water and purified water data transmitted by the water quality testing agency 2 in real time, including TDS value, residual chlorine content, pH value, etc. It performs data sampling and analysis every two seconds. When a parameter is detected to exceed the preset threshold, such as purified water TDS value > 50ppm, the controller 103 can push alarm information containing abnormal parameter details to the user APP through the Internet of Things communication module.

[0040] The bottom shell 1 has windows at both ends, and a cover 102 is installed in the window in a damped rotatable manner. The cover 102 is installed in the window at one end of the bottom shell 1 by a wing bolt thread to achieve closure.

[0041] Through the design of controller 103, activated carbon filter 107, filter bottle 104, threaded nozzle 106, guide pipe 109, threaded head 110, water quality testing mechanism 2, and extended top-contact locking mechanism 3, this IoT-based water purification terminal takes "water purification + data monitoring + intelligent control" as its core logic. The extended top-contact locking mechanism 3 is used to fix the equipment. Activated carbon filter 107 and filter bottle 104 form a multi-level purification link. Water quality testing mechanism 2 collects water quality data in real time. Controller 103 completes data processing and remote interaction, ultimately realizing a closed-loop operation of "raw water input → purification treatment → water quality monitoring → purified water output → intelligent feedback".

[0042] During installation, after placing the device in a home cabinet, operate the extended top-contact locking mechanism 3 to extend it from both ends of the bottom shell 1 and contact the inner walls of both sides of the cabinet. Locking and fixing are completed by using the tightening force and friction. No drilling or modification of the cabinet is required. It is suitable for cabinet spaces of different widths. Subsequent disassembly only requires operating the mechanism in reverse to retract the extended structure, making it easy to remove the device. No professional tools are required throughout the process.

[0043] Before use, the tap water pipe must be connected to the inlet of the water quality testing agency 2. After the water is turned on, the tap water first enters the water quality testing agency 2 to complete the raw water quality test. Then, it flows into the bottom shell 1 through one of the threaded nozzles 106 inside the top cover 101. It first enters the activated carbon filter element 107 fixed by the buckle 108. The activated carbon adsorbs residual chlorine, odor, organic matter and other impurities in the raw water to complete the primary purification. The water after primary purification flows into the filter bottle 104 through the guide pipe 109, the threaded head 110 and the nut cover 111 in a sealed connection. Bottle 104 is securely installed via a reduced-gap fit between the top T-shaped post 112 and the ring 105. The internal filter media further filters out sediment, rust, heavy metal ions, bacteria, and other minute impurities. Multiple filter bottles 104 are connected in series via the same guide pipe 109, threaded head 110, and nut cap 111, forming a multi-stage filtration system. The outlet of the last filter bottle 104 is connected via the guide pipe 109 to another threaded nozzle 106 inside the top cover 101. Water flows through this threaded nozzle 106 into the water quality testing unit 2 to complete the purified water quality testing. After passing the test, the water is discharged from the outlet of the water quality testing agency 2 for daily use such as drinking and cooking in the home. During this process, the raw water and purified water data collected by the water quality testing agency 2 are transmitted to the controller 103 in real time. The data processing unit of the controller 103 samples and analyzes the data every two seconds. If the parameters exceed the preset threshold, such as the purified water TDS value > 50ppm, an alarm message will be pushed to the user's APP through the 5G / NB-IoT dual-mode module. Users can also view the real-time water quality and equipment status through the APP to achieve intelligent management and ensure the safety of family drinking water. In addition to monitoring water quality safety, the controller 103 can also intuitively reflect the filtration efficiency of the activated carbon filter element 107 and filter bottle 104 by comparing the parameter differences between the raw water and purified water, such as the difference between the raw water TDS value and the purified water TDS value. If the difference gradually decreases, it indicates that the adsorption capacity of the filter material in the filter element or filter bottle 104 has decreased and is close to saturation, which indirectly reflects its wear and tear. The data processing unit of the controller 103 will combine the trend of the difference change with the equipment usage time to comprehensively calculate the remaining service life of the filter element and filter bottle 104.

[0044] like Figure 8 As shown, the extended top-contact locking mechanism 3 includes a scissor-type telescopic arm 301, which is disposed on the lower inner surface of the bottom shell 1. Two sets of rotating rods hinged between the scissor-type telescopic arms 301 slide in the guide rail groove 113. The guide rail groove 113 is opened at the center of the lower inner surface of the bottom shell 1 to provide sliding guidance for the rotating rods. Rollers 305 are rotatably installed on the two sets of connecting arms at both ends of the scissor-type telescopic arm 301. The rollers 305 roll in the U-shaped top block 306. The U-shaped top block 306 is slidably installed in the joint between the bottom shell 1 and the top cover 101.

[0045] Among them, a connecting plate 302 is rotatably installed on the upper surface of the hinge of two sets of connecting arms at one end of the middle of the scissor telescopic arm 301. A threaded rod 303 is threaded through the connecting plate 302. The threaded rod 303 is rotatably installed in the bottom shell 1, and one end of the threaded rod 303 is rotated to the outer surface of the bottom shell 1 and a handwheel 304 is fixedly installed at the end. Therefore, when the handwheel 304 is rotated to drive the threaded rod 303 to rotate, the connecting plate 302 will be driven to move axially along the threaded rod 303, thereby pushing the scissor telescopic arm 301 to expand or contract. This causes the rollers 305 at both ends to roll towards the center or outward on the U-shaped top block 306 and push it out or pull it back. The U-shaped top block 306, which is pushed up, can touch the two sides inside the cabinet to lock and fix the water purification terminal inside the cabinet.

[0046] Through the design of the scissor-type telescopic arm 301, connecting plate 302, threaded rod 303, handwheel 304, roller 305, and U-shaped top block 306, when it is necessary to fix the water purification terminal inside a household cabinet, first place the device stably in the preset position of the cabinet, and then manually rotate the handwheel 304 on the outer surface of the bottom shell 1. Since the handwheel 304 is fixedly connected to the end of the threaded rod 303, the rotation of the handwheel 304 will directly drive the threaded rod 303 to rotate synchronously around its own axis inside the bottom shell 1. The threaded rod 303 is threaded into the connecting plate 302 in the middle of the scissor-type telescopic arm 301, and the two are tightly engaged by the thread. At the same time, the connecting plate 302 and the two sets of connecting plates in the middle of the scissor-type telescopic arm 301 are also connected. The hinge joint of the scissor arm rotates, allowing it to move linearly along the axial direction of the threaded rod 303. If the handwheel 304 is rotated clockwise, the threaded rod 303 rotates clockwise, driving the connecting plate 302 to move towards the center of the threaded rod 303. As the connecting plate 302 moves, it exerts a thrust on the cross-hinged connecting rods of the scissor arm 301, causing the scissor arm 301 to unfold around each set of hinge points. At this time, the rotating rods hinged between the scissor arms 301 will slide smoothly along the guide groove 113 opened at the center of the lower inner surface of the bottom shell 1. The guide groove 113 provides directional guidance for the rotating rods, preventing deviation when the scissor arm 301 unfolds. The connecting arms at both ends of the scissor arm 301... The rotating roller 305 moves outward as the scissor-type telescopic arm 301 unfolds, and the roller 305 always rolls within the inner groove of the U-shaped top block 306. As the roller 305 rolls inward, it exerts an outward pushing force on the U-shaped top block 306, causing the U-shaped top block 306 to slide outward along the seam between the bottom shell 1 and the top cover 101 until the outer end face of the U-shaped top block 306 firmly contacts the inner walls of both sides of the cabinet. At this point, the clamping force between the U-shaped top block 306 and the inner wall of the cabinet, combined with the structural support force after the scissor-type telescopic arm 301 unfolds, securely locks the water purification terminal inside the cabinet, preventing the equipment from shifting due to water flow impact or accidental contact. When it is necessary to disassemble or adjust the position of the equipment, the handwheel 304 is rotated in the opposite direction, the threaded rod 303 rotates in the opposite direction, driving the connecting plate 302 to move towards the end of the threaded rod 303. The connecting plate 302 pulls the cross linkage of the scissor telescopic arm 301 to retract with the hinge point as the fulcrum. When the scissor telescopic arm 301 retracts, the rollers 305 at both ends will roll outward, generating an inward pulling force on the U-shaped top block 306, causing the U-shaped top block 306 to retract along the seam into the seam between the bottom shell 1 and the top cover 101, releasing the top contact lock with the inner wall of the cabinet. At this time, the water purification terminal can be easily taken out of the cabinet. The whole process does not require the use of professional tools, is convenient to operate and will not damage the cabinet.

[0047] like Figure 9As shown, the water quality testing mechanism 2 includes two sets of ring tubes 203, which are respectively connected to two sets of threaded nozzles 106. The outer surfaces of both sets of ring tubes 203 are internally connected and have three sets of threaded grooves. These three sets of threaded grooves are respectively used for the threaded installation of a TDS sensor 205, a residual chlorine sensor 206, and a pH sensor 207. After tightening, the detection arc-shaped probe will be inserted into the ring tube 203 and kept parallel to the central axis of the ring tube 203 to ensure full contact with the water flow. A [missing information - likely a device or component] is installed between the threaded groove and the sensor. Food-grade silicone sealing rings; the upper and lower surfaces of the two sets of ring pipes 203 are respectively connected to the inlet pipe 204 and the outlet pipe 210; the signal transmitting ends of the TDS sensor 205, residual chlorine sensor 206 and pH sensor 207 are all connected to the signal receiving end of the controller 103. The models of the TDS sensor 205, residual chlorine sensor 206 and pH sensor 207 and the controller 103 are HM-TDS-02, CL-100, PHG-210 and STM32F407VET6, respectively.

[0048] An installation cylinder 201 is fixedly installed between the two sets of ring tubes 203. A dual-axis motor 202 is fixedly installed inside the installation cylinder 201. The output shafts at the upper and lower ends of the dual-axis motor 202 are both rotated through sealed bearings into the ring tubes 203 and fixedly connected to the scraping ring 208. The scraping ring 208 is rotatably installed inside the ring tubes 203 and has a scraper 209 on its outer surface. The scraping ring 208 is rotated by the dual-axis motor 202, which in turn drives the scraper 209 to scrape over the arc probe surfaces of the TDS sensor 205, the residual chlorine sensor 206, and the pH sensor 207. The dual-axis motor 202 is controlled by the controller 103.

[0049] The design incorporates a dual-axis motor 202, a ring pipe 203, an inlet pipe 204, a TDS sensor 205, a residual chlorine sensor 206, a pH sensor 207, a scraper ring 208, and an outlet pipe 210. During use, tap water first flows into the ring pipe 203 through the inlet pipe 204 on the upper surface of one of the ring pipes 203. The TDS sensor 205, residual chlorine sensor 206, and pH sensor 207 are respectively threaded into three sets of grooves embedded in the outer surface of the ring pipe 203. After the sensors are tightened, their arc-shaped probes extend through the wall of the ring pipe 203 into the interior of the pipe cavity, and the probes remain parallel to the central axis of the ring pipe 203. This ensures that the water flowing through the probes makes full contact with their surfaces, guaranteeing accurate detection data. At this point, the TDS sensor... Device 205 can measure the total dissolved solids in raw water in real time. Residual chlorine sensor 206 detects residual chlorine in raw water using an electrochemical method. pH sensor 207 measures the acidity and alkalinity of raw water using a glass membrane electrode. The three sensors simultaneously collect the core water quality parameters of the raw water. The purified water then flows through activated carbon filter 107 and filter bottle 104 and is connected to another set of loop pipes 203 through another set of threaded nozzles 106. The water flows into the cavity of the pipe along the inlet pipe 204 on the upper surface of the loop pipe 203, consistent with the raw water detection logic. The three sets of sensors of the same model on the loop pipe 203 perform secondary detection of TDS value, residual chlorine content, and pH value of the purified water, comparing the parameter differences between the raw water and the purified water. For example, if the raw water TDS value drops from 200 ppm to the purified water TDS value of 30 ppm... PM indicates that the purification efficiency meets the standard. After the test is completed, the raw water and purified water flow out from the outlet pipe 210 on the lower surface of the corresponding ring pipe 203. The raw water enters the purification link in the bottom shell 1 through the outlet pipe 210, while the purified water is directly supplied to the household for drinking through the outlet pipe 210. At the same time, food-grade silicone sealing rings are installed at the threaded connection between the two sets of ring pipes 203 and the sensor to prevent water leakage and ensure the sealing and hygiene of the testing process. During long-term use, scale and impurities are easily attached to the surface of the arc probe of the sensor, which will lead to a decrease in detection accuracy. At this time, the controller 103 will send a start signal to the dual-axis motor 202 according to the preset cycle. The dual-axis motor 202 is fixed in the mounting cylinder 201 between the two sets of ring pipes 203, and its upper and lower output shafts pass through the ring pipes through sealed bearings. The tube wall 203 is fixedly connected to the scraping ring 208 inside the annular tube 203. After the dual-axis motor 202 starts, the output shaft drives the scraping ring 208 to rotate around the central axis of the annular tube 203. The scraper blade 209 on the outer surface of the scraping ring 208 rotates synchronously with the scraping ring 208. Since the scraper blade 209 is in contact with the surface of the arc-shaped probe of the sensor, it will slide along the probe surface during rotation, thus thoroughly scraping away the attached scale and impurities. The scraped impurities will be blocked in the activated carbon filter element 107 with the water flow. After the scraping is completed, the dual-axis motor 202 automatically stops, and the scraping ring 208 returns to its initial position, without affecting the normal flow of water and subsequent detection, ensuring that the sensor maintains a high-precision detection state for a long time. The signal transmitters of the three sets of sensors are all connected to the controller 103 via Bluetooth.The sensor converts the collected analog signals into digital signals and transmits data to the controller 103 every two seconds to ensure that water quality changes are captured in real time. The data processing unit of the controller 103 analyzes the received raw water and purified water data and compares them with preset thresholds, such as purified water TDS value ≤50ppm, residual chlorine content ≤0.05mg / L, and pH value 6.5-8.5. If the parameters meet the standards, the controller 103 pushes a normal water quality report to the user via the APP. If the parameters exceed the standards, it immediately pushes an abnormal information to the APP. 3. It also judges the wear and tear of the filter cartridge and filter bottle 104 based on changes in the parameter difference between the raw water and purified water. When the difference continuously narrows to below a threshold, it automatically sends a filter cartridge / filter bottle 104 replacement reminder to the user, realizing an intelligent closed loop of "detection-judgment-reminder." This achieves a design of "dual-path detection + self-cleaning + intelligent transmission," ensuring real-time monitoring accuracy of raw and purified water quality, extending sensor lifespan through self-cleaning, and visualizing detection data and providing anomaly warnings through the controller 103, providing core technological support for family drinking water safety.

[0050] Specifically, in this embodiment, the controller 103 incorporates a filter performance degradation model (FEDM) to dynamically calculate the overall purification efficiency η and remaining lifespan percentage R of the filter assembly. Its expression is as follows:

[0051] ;

[0052] .

[0053] in:

[0054] η0 is the initial purification efficiency of the filter element (factory calibration value);

[0055] α is the time decay coefficient, which is related to water hardness, with a unit of 1 / day, and is preset according to the local water quality.

[0056] β is the water quality fluctuation factor, an empirical value, usually 0.1-0.3;

[0057] ΔTDS(t) is the difference in TDS between raw water and purified water at time t, obtained from real-time sensor data.

[0058] TDS0 is the initial raw water TDS baseline value, recorded upon first use.

[0059] η threshold The purification efficiency threshold (default 0.6);

[0060] t represents the usage time (in days).

[0061] Equation derivation process: This model is constructed based on the following assumptions and measured data:

[0062] 1. The initial purification efficiency η0 is specified by the manufacturer and is usually between 0.95 and 0.99;

[0063] 2. The time decay follows an exponential decay law, and the coefficient α is positively correlated with water hardness;

[0064] 3. The rate of decay is corrected by the ratio of ΔTDS(t) to the initial baseline;

[0065] 4. Remaining lifetime is calculated by inversely using the logarithmic ratio of the current efficiency to the threshold.

[0066] The derivation steps are as follows:

[0067] Assume that the purification efficiency decreases with both time and water quality fluctuations;

[0068] Introducing the exponential decay term e −αt Describe the impact of time;

[0069] Introducing a linear correction term Describe the impact of water quality fluctuations;

[0070] When η(t) ≤ η threshold It is determined that the filter element needs to be replaced at this time;

[0071] The remaining lifetime percentage R(t) can be obtained by inverse solving the time t.

[0072] For example, assuming: η0 = 0.95; α = 0.002; β = 0.1; TDS0 = 200ppm;

[0073] ΔTDS(30) = 150ppm; t = 30 days.

[0074] but:

[0075]

[0076]

[0077] This indicates that the filter cartridge is still in good condition, with approximately 159.5% of its lifespan remaining (meaning it can be used for about 1.6 times the current time).

[0078] Technical effects:

[0079] 1. Dynamically predict filter lifespan to avoid the inaccuracy of fixed-time replacement;

[0080] 2. It takes into account water quality fluctuations, making it more suitable for actual use environments;

[0081] 3. Users can remotely check the filter status and prepare for replacement in advance;

[0082] 4. Reduce maintenance costs and avoid replacing the filter element too early or too late.

[0083] Working principle and process:

[0084] start

[0085] │

[0086] ├── Initialization: Record η0, TDS0

[0087] │

[0088] ├── Collects data every 2 seconds: Raw water TDS_in(t), purified water TDS_out(t)

[0089] │

[0090] ├──Calculate ΔTDS(t) = TDS_in(t) - TDS_out(t)

[0091] │

[0092] ├── η(t) is updated every 24 hours.

[0093] │

[0094] ├──Calculate R(t)=ln(η(t) / η_threshold) / (-α)*100%

[0095] │

[0096] ├──If R(t)≤20%→Send a replacement reminder

[0097] │

[0098] └── Executes in a loop.

[0099] Based on the above technical solution, the working steps of this solution are summarized as follows: During equipment installation, after placing it in a household cabinet, manually rotate the handwheel 304 on the outer surface of the base shell 1. Since the handwheel 304 is fixedly connected to the end of the threaded rod 303, the rotation of the handwheel 304 will directly drive the threaded rod 303 to rotate synchronously around its own axis within the base shell 1. The threaded rod 303 is threaded into the connecting plate 302 in the middle of the scissor telescopic arm 301, and the two are tightly engaged by the threads. At the same time, the connecting plate 302 is rotatably connected to the hinge of the two sets of connecting arms in the middle of the scissor telescopic arm 301, causing it to move linearly along the axial direction of the threaded rod 303. If the handwheel 304 is rotated clockwise, the threaded rod 303 rotates clockwise, driving the connecting plate 302 toward the center of the threaded rod 303. When the connecting plate 302 moves, it exerts a thrust on the cross-hinged connecting rods of the scissor telescopic arm 301, causing the scissor telescopic arm 301 to unfold around each set of hinge points. At this time, the rotating rods hinged between the scissor telescopic arms 301 will slide smoothly along the guide groove 113 opened at the center of the lower inner surface of the bottom shell 1. The guide groove 113 provides directional guidance for the rotating rods, preventing the scissor telescopic arm 301 from deviating when unfolding. The rollers 305 rotatably mounted on the connecting arms at both ends of the scissor telescopic arm 301 will move outward as the scissor telescopic arm 301 unfolds, and the rollers 305 always roll in contact with the inner groove of the U-shaped top block 306. As the rollers 305 roll inward, they will exert an outward pushing force on the U-shaped top block 306, causing the U-shaped top block 306 to move along the bottom shell 1 and the top... The seam between the covers 101 slides outward until the outer end face of the U-shaped top block 306 tightly contacts the inner walls on both sides of the cabinet. At this time, the clamping force between the U-shaped top block 306 and the inner wall of the cabinet, together with the structural support force after the scissor telescopic arm 301 is extended, securely locks the water purification terminal inside the cabinet, preventing the equipment from shifting due to water flow impact or accidental contact. When it is necessary to disassemble or adjust the position of the equipment, the handwheel 304 can be rotated in the reverse direction. After installation, the household tap water can be connected to the inlet pipe 204 on the upper surface of one of the ring pipes 203, and then the tap water can flow into the ring pipe 203. The three sets of threaded grooves embedded in the outer surface of the ring pipe 203 respectively threadedly install a TDS sensor 205, a residual chlorine sensor 206, and a pH sensor 207. After the sensor is tightened, its arc-shaped probe extends through the wall of the loop pipe 203 into the cavity, and the probe remains parallel to the central axis of the loop pipe 203. This ensures that the water flowing through it makes full contact with the probe surface, guaranteeing accurate detection data. At this time, the TDS sensor 205 can measure the total dissolved solids in the raw water in real time, the residual chlorine sensor 206 detects the residual chlorine in the raw water using an electrochemical method, and the pH sensor 207 measures the acidity or alkalinity of the raw water using a glass membrane electrode. The three sensors simultaneously collect the core water quality parameters of the raw water. The purified water, after passing through the activated carbon filter 107 and filter bottle 104, flows through another threaded nozzle 106 into another loop pipe 203, and then flows into the cavity along the inlet pipe 204 on the upper surface of the loop pipe 203, consistent with the raw water detection logic.Three sets of sensors of the same model on the loop pipe 203 perform secondary detection of TDS value, residual chlorine content, and pH value of the purified water flow, comparing the parameter differences between the raw water and the purified water. For example, if the TDS value of the raw water drops from 200 ppm to 30 ppm of the purified water, it indicates that the purification efficiency meets the standard. After the detection is completed, the raw water and purified water flow out from the outlet pipe 210 on the lower surface of the corresponding loop pipe 203, respectively. The raw water enters the purification link in the bottom shell 1 through the outlet pipe 210, while the purified water is directly supplied to households for drinking through the outlet pipe 210. At the same time, food-grade silicone sealing rings are installed at the threaded connection between the two sets of loop pipes 203 and the sensors to prevent water leakage and ensure the sealing and hygiene of the detection process for long-term use. During use, scale and impurities easily adhere to the surface of the sensor's curved probe, leading to a decrease in detection accuracy. In this case, the controller 103 sends a start signal to the dual-axis motor 202 according to a preset cycle. The dual-axis motor 202 is fixed inside the mounting cylinder 201 between two sets of annular tubes 203. Its upper and lower output shafts pass through the tube wall of the annular tube 203 via sealed bearings and are fixedly connected to the scraping ring 208 inside the annular tube 203. After the dual-axis motor 202 starts, the output shaft drives the scraping ring 208 to rotate around the central axis of the annular tube 203. The scraper blades 209 on the outer surface of the scraping ring 208 rotate synchronously with the scraping ring 208. Because the scraper blades 209 are in contact with the surface of the sensor's curved probe, they will move along the probe surface during rotation. The sliding mechanism thoroughly scrapes away attached scale and impurities. The scraped impurities are trapped within the activated carbon filter 107 by the water flow. After scraping, the dual-axis motor 202 automatically stops, and the scraping ring 208 returns to its initial position, ensuring normal water flow and subsequent detection. This guarantees the sensor maintains high-precision detection over a long period. The signal transmitters of all three sensors are connected to the controller 103 via Bluetooth. The sensors convert the collected analog signals into digital signals and transmit data to the controller 103 every two seconds, ensuring real-time capture of water quality changes. The controller 103's data processing unit analyzes the received raw water and purified water data and applies preset thresholds, such as purified water TD. The system compares the values ​​of S value ≤ 50ppm, residual chlorine content ≤ 0.05mg / L, and pH value 6.5-8.5. If the parameters meet the standards, the controller 103 pushes a normal water quality report to the user via the APP. If the parameters exceed the standards, it immediately pushes an abnormal information to the APP. Simultaneously, the controller 103 also judges the wear and tear of the filter cartridge and filter bottle 104 based on the parameter difference between the raw water and the purified water. When the difference continuously narrows to below the threshold, it automatically pushes a filter cartridge / filter bottle 104 replacement reminder to the user, realizing an intelligent closed loop of "detection-judgment-reminder." This achieves a design of "dual-path detection + self-cleaning + intelligent transmission," providing core technological support for family drinking water safety.

[0100] In summary: By using the extended top-contact locking mechanism 3 and the water quality testing mechanism 2 as the core, combined with the controller 103 and purification components, intelligent water purification is achieved. The locking mechanism allows for convenient fixing or adjustment of the equipment, while the testing mechanism uses the double-ring tube 203 and sensors to measure raw water and purified water parameters. The dual-axis motor 202 cleans the probe, and the water flows through the activated carbon filter 107 and filter bottle 104 for multi-stage purification. The controller 103 analyzes data every two seconds, alarms when thresholds are exceeded, and reminds users to replace the filter cartridge, thus comprehensively ensuring drinking water safety.

[0101] All parts not described in this invention are the same as or can be implemented using existing technology. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water purification terminal based on the Internet of Things, characterized in that, include: The bottom shell (1) and the top cover (101) are fitted onto the outer surface of the bottom shell (1) by screw threads. A ring (105) is fixedly installed on the top of the bottom shell (1). An activated carbon filter element (107) is provided at the upper end of the ring (105). The activated carbon filter element (107) is fixedly installed on one end of the top of the bottom shell (1) by a buckle (108) fitted on the outer surface. An extended top-contact locking mechanism (3) is fixedly installed on the lower surface of the bottom shell (1). The extended top-contact locking mechanism (3) extends from both ends of the bottom shell (1) and contacts both sides of the cabinet to achieve locking.

2. The water purification terminal based on the Internet of Things according to claim 1, characterized in that: The spacing of the ring openings (105) decreases from large to small, so that the filter bottle (104) can be inserted through the top T-shaped post (112) and then gradually tightened. Each set of filter bottles (104) and activated carbon filter element (107) is connected to both ends by a guide tube (109). The other ends of the two sets of guide tubes (109) are respectively provided with a threaded head (110) and a nut cap (111) rotatably installed, so that the activated carbon filter element (107) is threaded onto the outer surface of the threaded head (110) of the first set of filter bottles (104) through the nut cap (111). The filter bottles (104) can be connected to each other by threading the nut cap (111) onto the outer surface of the threaded head (110) of the other set of filter bottles (104). Among them, the last remaining filter bottle (104) and activated carbon filter element (107) after connection can be threaded onto the outer surface of two sets of threaded nozzles (106) through the nut cap (111). These two sets of threaded nozzles (106) are fixedly installed inside one end of the top cover (101). The other end of the threaded nozzles (106) is connected to the water quality testing mechanism (2). The water quality testing mechanism (2) is fixedly installed at one end of the top cover (101). The water quality testing mechanism (2) is supplied with tap water for injection and purified water for discharge at its upper and lower ends, respectively. The injected tap water can pass through the activated carbon filter element (107) and multiple filter bottles (104) in sequence and then be discharged from the lower end of the water quality testing mechanism (2). This flow path design enables the water quality testing mechanism (2) to simultaneously achieve dual detection functions, which can monitor the raw water quality entering the system in real time and accurately detect the effluent water quality after purification by the filter element group, and send its detection data to the controller (103) in real time. The controller (103) is fixedly installed on one side of the outer surface of the bottom shell (1). The controller (103) integrates an Internet of Things (IoT) communication module and a data processing unit. The IoT communication module adopts 5G / NB-IoT dual-mode communication technology, automatically adapts to the home network environment, and establishes an encrypted connection with the cloud server.

3. A water purification terminal based on the Internet of Things according to claim 2, characterized in that: The data processing unit receives raw water and purified water data transmitted by the water quality testing agency (2) in real time, including TDS value, residual chlorine content and pH value. Data sampling and analysis are performed every two seconds. When a parameter is detected to exceed the preset threshold, the controller (103) can push alarm information containing details of abnormal parameters to the user APP through the Internet of Things communication module.

4. A water purification terminal based on the Internet of Things according to claim 3, characterized in that: Both ends of the bottom shell (1) are provided with windows, and the cover (102) is installed in the window in a damped rotation. The cover (102) is installed in the window at one end of the bottom shell (1) by a butterfly bolt thread to achieve closure.

5. A water purification terminal based on the Internet of Things according to claim 4, characterized in that: The extended top-contact locking mechanism (3) includes a scissor telescopic arm (301), which is located on the lower inner surface of the bottom shell (1). Two sets of rotating rods hinged between the scissor telescopic arms (301) slide in the guide rail groove (113). The guide rail groove (113) is located at the center of the lower inner surface of the bottom shell (1) to provide sliding guidance for the rotating rods. Rollers (305) are rotatably installed on the two sets of connecting arms at both ends of the scissor telescopic arm (301). The rollers (305) roll in the U-shaped top block (306). The U-shaped top block (306) is slidably installed in the joint between the bottom shell (1) and the top cover (101).

6. A water purification terminal based on the Internet of Things according to claim 5, characterized in that: A connecting plate (302) is rotatably mounted on the upper surface of the hinge joint of two sets of connecting arms at one end of the middle of the scissor telescopic arm (301). A threaded rod (303) is threaded through the connecting plate (302). The threaded rod (303) is rotatably mounted in the bottom shell (1), and one end of the threaded rod (303) is rotated through to the outer surface of the bottom shell (1) and a handwheel (304) is fixedly mounted at the end. When the handwheel (304) is rotated to drive the threaded rod (303) to rotate, the connecting plate (302) will be driven to move axially along the threaded rod (303), thereby pushing the scissor telescopic arm (301) to unfold or retract. This causes the rollers (305) at both ends to roll towards the center or outward on the U-shaped top block (306) and push it out or pull it back. The U-shaped top block (306) that is pushed out can touch the two sides inside the cabinet, thereby locking and fixing the water purification terminal inside the cabinet.

7. A water purification terminal based on the Internet of Things according to claim 6, characterized in that: The water quality testing mechanism (2) includes two sets of ring tubes (203). The two sets of ring tubes (203) are connected to two sets of threaded nozzles (106) respectively. The outer surfaces of the two sets of ring tubes (203) are inlaid and connected with three sets of threaded grooves. The TDS sensor (205), residual chlorine sensor (206) and pH sensor (207) are respectively threaded into the three sets of threaded grooves. After tightening, the detection arc probe will be inserted into the ring tube (203) and kept parallel to the central axis of the ring tube (203) to ensure full contact with the water flow. A food-grade silicone sealing ring is installed between the threaded groove and the sensor.

8. A water purification terminal based on the Internet of Things according to claim 7, characterized in that: The upper and lower surfaces of the two sets of ring pipes (203) are respectively connected to the water inlet pipe (204) and the water outlet pipe (210).

9. A water purification terminal based on the Internet of Things according to claim 7, characterized in that: The signal transmitters of the TDS sensor (205), residual chlorine sensor (206), and pH sensor (207) are all connected to the signal receiver of the controller (103).

10. A water purification terminal based on the Internet of Things according to claim 7, characterized in that: An installation cylinder (201) is fixedly installed between the two sets of ring tubes (203). A dual-axis motor (202) is fixedly installed inside the installation cylinder (201). The output shafts at the upper and lower ends of the dual-axis motor (202) are both rotated through sealed bearings into the ring tube (203) and fixedly connected to the scraping ring (208). The scraping ring (208) is rotatably installed inside the ring tube (203) and has a shovel (209) on its outer surface. This allows the scraping ring (208) to be rotated by the dual-axis motor (202) to drive the shovel (209) to scrape across the arc probe surfaces of the TDS sensor (205), residual chlorine sensor (206), and pH sensor (207). The dual-axis motor (202) is controlled by the controller (103).

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