Multi-loop water supply system

Abstract

The utility model provides a multi-loop water supply system, relates to the technical field of water supply systems, and aims to solve the technical problem that the water supply system is difficult to meet the requirement of a user for flexibly selecting water supply types. The multi-loop water supply system comprises a first water supply loop and a second water supply loop which can be switched; the first water supply loop comprises a water storage structure, a pressurizing structure, a first control valve and a reverse osmosis structure; the pressurizing structure is connected with the water storage structure, the reverse osmosis structure is connected with the pressurizing structure, and the first control valve is located on a pipeline connecting the pressurizing structure and the reverse osmosis structure; the second water supply loop comprises a water storage structure, a pressurization structure, a second control valve, a water purification structure and a reverse osmosis structure, the input end and the output end of the water purification structure are connected with the pressurization structure and the reverse osmosis structure respectively, and the second control valve is located on a pipeline where the pressurization structure is connected with the water purification structure. A user can flexibly select water supply types by switching the water supply loops of the water supply system.

Description

Technical Field

[0001] This application relates to the field of water supply system technology, and in particular to a multi-loop water supply system. Background Technology

[0002] Water supply systems are used to replenish municipal water networks to residential areas, hotels, shopping malls, and other locations. These systems include tap water supply systems and direct drinking water supply systems. Tap water supply systems deliver standard-quality water (tap water), while direct drinking water supply systems deliver higher-quality water (direct drinking water). Currently, water supply systems can only provide users with one of these two types of water. However, this system is insufficient to meet users' needs for flexible selection of water type. Utility Model Content

[0003] This application provides a multi-loop water supply system to solve the technical problem that the water supply systems in the above-mentioned related technologies are unable to meet users' flexible needs for tap water and direct drinking water.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] This application provides a multi-circuit water supply system, including a switchable first water supply circuit and a second water supply circuit;

[0006] The first water supply circuit includes a water storage structure, a pressurization structure, a first control valve, and a reverse osmosis structure;

[0007] The water storage structure is used to connect to the water supply pipeline; the pressurization structure is connected to the water storage structure; the reverse osmosis structure is connected to the pressurization structure; the first control valve is located on the pipeline connecting the pressurization structure and the reverse osmosis structure; the first output end of the reverse osmosis structure is used to connect to the user pipeline.

[0008] The second water supply circuit includes the water storage structure, the pressurization structure, the second control valve, the water purification structure, and the reverse osmosis structure. The input end of the water purification structure is connected to the pressurization structure, and the output end of the water purification structure is connected to the reverse osmosis structure. The second control valve is located on the pipeline connecting the pressurization structure and the water purification structure.

[0009] The multi-loop water supply system also includes a concentrate recovery pipeline, the input end of which is connected to the second output end of the reverse osmosis structure, and the output end of which is connected to the water storage structure.

[0010] When the multi-circuit water supply system switches to the first water supply circuit, the first control valve opens and the second control valve closes.

[0011] When the multi-circuit water supply system switches to the second water supply circuit, the first control valve closes and the second control valve opens.

[0012] Based on the above technical solution, the following improvements can be made to this application.

[0013] In one possible implementation, the water purification structure includes a pre-filtration structure and a fine filtration structure connected together;

[0014] The input end of the primary filtration structure is connected to the pressurization structure, and the output end of the fine filtration structure is connected to the reverse osmosis structure.

[0015] In one possible implementation, the primary filtration structure includes a flocculant and a quartz sand filter and an activated carbon filter connected in sequence.

[0016] The quartz sand filter is connected to the second control valve;

[0017] The flocculant is provided in the pipeline between the second control valve and the quartz sand filter.

[0018] In one possible implementation, the primary filtration structure further includes a connected flocculant dosing tank and a dosing pump;

[0019] The flocculant dosing tank is connected to the pipeline that is connected to the second control valve and the quartz sand filter. The flocculant dosing tank is used to add the flocculant into the pipeline by the dosing pump.

[0020] In one possible implementation, the second water supply circuit further includes a first pressure-replenishing structure and a first pressure sensor;

[0021] The first pressure replenishment structure is connected to the output end of the fine filtration structure, and the first pressure sensor is installed on the pipeline between the first pressure replenishment structure and the reverse osmosis structure.

[0022] In one possible implementation, the multi-loop water supply system further includes a connected water quality detection structure and a disinfection structure;

[0023] The input end of the water quality detection structure is connected to the output end of the water storage structure, and the output end of the disinfection structure is connected to the pressurization structure.

[0024] In one possible implementation, the water quality detection structure includes a residual chlorine detection unit, a turbidity detection unit, and a pH detection unit connected in sequence.

[0025] In one possible implementation, the disinfection structure includes a disinfection pipeline, an ultraviolet lamp, and an ultraviolet lamp controller;

[0026] The disinfection pipeline is connected to the output end of the water quality detection structure;

[0027] The ultraviolet lamp is installed on the disinfection pipeline;

[0028] The ultraviolet lamp controller is electrically connected to the ultraviolet lamp.

[0029] In one possible implementation, the multi-loop water supply system further includes a second pressure replenishment structure and a second pressure sensor;

[0030] The second pressure-replenishing structure is connected to the output end of the reverse osmosis structure, and the second pressure sensor is installed on the pipeline between the second pressure-replenishing structure and the user pipeline.

[0031] In one possible implementation, the multi-loop water supply system further includes a control structure electrically connected to the first control valve and the second control valve.

[0032] The multi-loop water supply system provided in this application has the following beneficial effects:

[0033] The multi-loop water supply system includes a switchable first water supply loop and a second water supply loop. The first water supply loop is used to supply users with water of general quality, and the second water supply loop is used to supply users with water of higher quality. In the first water supply loop, a water storage structure is used to connect the water supply pipeline, a pressurization structure is connected to the water storage structure, and a reverse osmosis structure is connected to the pressurization structure. The water in the water supply pipeline is stored in the water storage structure, pressurized by the pressurization structure, filtered by the reverse osmosis structure, and then delivered to the user pipeline through the first output end of the reverse osmosis structure, thereby providing users with water of general quality (tap water). By installing a first control valve on the pipeline connecting the pressurization structure and the reverse osmosis structure, the first water supply loop is connected when the first control valve is open, and closed when the first control valve is closed.

[0034] In the second water supply loop, a water storage structure connects the water supply pipeline. The input end of the water purification structure is connected to the pressurization structure, and the output end of the water purification structure is connected to the reverse osmosis structure. Water in the supply pipeline is stored in the water storage structure, pressurized by the pressurization structure, purified by the water purification structure, and filtered by the reverse osmosis structure before being delivered to the user's pipeline through the first output end of the reverse osmosis structure, thus providing users with high-quality water (drinking water). A second control valve is installed on the pipeline connecting the pressurization structure and the water purification structure, so that the second water supply loop is connected when the second control valve is open, and closed when it is closed. By switching the multi-loop water supply system to the first water supply loop, the first control valve opens and the second control valve closes; by switching to the second water supply loop, the first control valve closes and the second control valve opens. Compared with related technologies, this allows users to flexibly choose the type of water supply by switching the water supply loop of the water supply system.

[0035] In addition, the multi-loop water supply system also includes a concentrate recovery pipeline. The two ends of the concentrate recovery pipeline are connected to the reverse osmosis structure and the water storage structure, respectively, enabling the recovery and reuse of concentrate from the reverse osmosis structure, thus saving water resources. The first and second water supply loops share the water storage structure, pressurization structure, and reverse osmosis structure. Compared to setting up separate tap water supply systems and separate direct drinking water supply systems to provide users with tap water and direct drinking water, this saves costs. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the multi-loop water supply system provided in the embodiments of this application;

[0038] Figure 2 This is a schematic diagram of the structure of a multi-loop water supply system provided in an embodiment of this application;

[0039] Figure 3 This is a schematic diagram of the reverse osmosis module provided in the embodiments of this application;

[0040] Figure 4 This is a schematic diagram of the water quality detection structure provided in the embodiments of this application;

[0041] Figure 5 This is a schematic diagram of the disinfection structure provided in the embodiments of this application;

[0042] Figure 6 This is a schematic diagram of the control structure provided in an embodiment of this application.

[0043] Explanation of reference numerals in the attached figures:

[0044] 100 - Water storage structure;

[0045] 101 - First butterfly valve; 102 - First inlet electric valve; 103 - Y-type filter;

[0046] 104 - Backflow prevention valve; 105 - Second inlet electric valve; 106 - Water tank;

[0047] 107 - Water tank level sensor; 108 - Drain valve; 109 - Drain ditch; 110 - Second butterfly valve;

[0048] 200 - Pressurized structure;

[0049] 201 - Booster pump; 202 - First pressure sensor; 203 - First pressure gauge;

[0050] 300 - First control valve;

[0051] 400 - Reverse osmosis structure;

[0052] 401 - Third butterfly valve; 402 - Third electric valve; 403 - Reverse osmosis module;

[0053] 404 - Fourth butterfly valve; 405 - Fourth electric valve;

[0054] 500 - Second control valve;

[0055] 600 - Water purification structure;

[0056] 610 - Primary filter structure; 611 - Quartz sand filter; 612 - Activated carbon filter;

[0057] 613-Flocculant dosing tank; 614-Dosing pump; 620-Fine filtration structure; 621-Fifth butterfly valve;

[0058] 622 - Fine filter tank; 623 - Exhaust valve; 624 - Second pressure gauge; 625 - Sixth butterfly valve;

[0059] 701 - First pressure compensation structure; 702 - Second pressure sensor; 703 - Second pressure compensation structure;

[0060] 704 - Third pressure sensor;

[0061] 810 - Water quality testing structure; 820 - Disinfection structure; 821 - Disinfection piping; 822 - Ultraviolet lamp;

[0062] 823 - Ultraviolet Lamp Controller;

[0063] 900 - Control Structure;

[0064] 910 - Integrated controller; 911 - Circuit breaker; 912 - Rectifier; 913 - Capacitor;

[0065] 914 - Inverter / Frequency Converter; 915 - Current Sensor; 916 - PID Controller;

[0066] 917-V / f controller; 918-PWM transmitter unit;

[0067] I-Concentrate recovery pipeline. Detailed Implementation

[0068] Water supply systems suffer from technical challenges in meeting users' needs for flexible selection of water types. This is because related technologies typically employ either tap water or direct drinking water systems. Users need to use tap water for activities like washing vegetables and hands to avoid the high price of direct drinking water, while they need direct drinking water for drinking and cooking to avoid the poor quality of tap water. Users require the flexibility to switch between tap water and direct drinking water, but a single water supply system cannot adequately meet these needs.

[0069] To address the aforementioned technical problems, this application provides a multi-loop water supply system. In the first water supply loop, water in the supply pipeline is stored in a water storage structure, pressurized by a pressurization structure, and filtered by a reverse osmosis structure before being delivered to the user's pipeline, thus providing the user with water of general quality (tap water). In the second water supply loop, water is stored in a water storage structure, pressurized by a pressurization structure, purified by a water purification structure, and filtered by a reverse osmosis structure before being delivered to the user's pipeline, thus providing the user with water of higher quality (drinking water). When the multi-loop water supply system is switched to the first water supply loop, the first control valve opens and the second control valve closes; when switched to the second water supply loop, the first control valve closes and the second control valve opens. Compared with related technologies, this system allows users to flexibly choose the type of water supplied by switching the water supply loops of the water supply system.

[0070] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0071] refer to Figure 1 and Figure 2 This application provides a multi-loop water supply system, including a switchable first water supply loop and a second water supply loop. The first water supply loop is used to supply tap water to users, and the second water supply loop is used to supply drinking water to users. Figure 2 As shown, the first water supply circuit includes a water storage structure 100, a pressurization structure 200, a first control valve 300, and a reverse osmosis structure 400.

[0072] A water storage structure 100 is installed at the end of a water supply pipeline, which can be a municipal water supply pipeline or a tap water supply pipeline. The water storage structure 100 stores the water transmitted by the water supply pipeline and replenishes it in a timely manner when the water volume in the water supply pipeline is insufficient, in preparation for unforeseen circumstances. The water storage structure 100 may include a first butterfly valve 101, a first inlet electric valve 102, a Y-type filter 103, a backflow prevention valve 104, a second inlet electric valve 105, a water tank 106, a water tank level sensor 107, a drain valve 108, a drain ditch 109, and a second butterfly valve 110.

[0073] The input end of the first butterfly valve 101 is connected to the water supply network, and the input end of the first inlet electric valve 102 is connected to the output end of the first butterfly valve 101. The first butterfly valve 101 and the first inlet electric valve 102 are used to control the on / off flow rate of the municipal water supply. The input end of the Y-type filter 103 is connected to the output end of the first inlet electric valve 102, and it is used to filter solid particles such as iron filings and silt from the flowing fluid. The output end of the Y-type filter 103 is connected to the input end of the backflow preventer 104, and the output end of the backflow preventer 104 is connected to the inlet end of the water tank 106. The backflow preventer 104 is used to prevent the fluid in the pipe from flowing backward. The second inlet electric valve 105 is installed on the pipeline between the backflow preventer 104 and the water tank 106.

[0074] The water tank 106 is equipped with a water tank level sensor 107 for detecting the water level inside the water tank 106. When the water level in the water tank 106 is lower than the preset water level value, the second water inlet electric valve 105 opens to replenish water to the water tank 106; and when the water level in the water tank 106 is not lower than the preset water level value, the second water inlet electric valve 105 is closed to stop replenishing water to the water tank 106.

[0075] The outlet of the water tank 106 is connected to the input of the pressurization structure 200 through the second butterfly valve 110. The second butterfly valve 110 is normally open. The outlet of the water tank 106 is also connected to the drain ditch 109 through the drain valve 108. When cleaning the water tank 106, the drain valve 108 is opened and the second butterfly valve 110 is closed, and the water in the water tank 106 flows into the drain ditch 109.

[0076] The pressurization structure 200 may include a booster pump 201, a first pressure sensor 202, and a first pressure gauge 203. The booster pump 201 is connected to the outlet of the water tank 106. The booster pump 201, the first pressure sensor 202, and the first pressure gauge 203 are connected in sequence. The booster pump 201 is used to increase the water pressure. The first pressure sensor 202 is used to detect the pressure after boosting by the booster pump 201 and feed it back to the booster pump 201. The first pressure gauge 203 is used to detect the pressure after boosting by the booster pump 201 and display it. The pressurization structure 200 may have a first input interface and a second output interface.

[0077] The first control valve 300 can be an electric valve. The first end of the first control valve 300 is connected to the first output port of the pressurization structure 200. The reverse osmosis structure 400 includes a first input port and a second input port. The first input port of the reverse osmosis structure 400 is connected to the second end of the first control valve 300.

[0078] The reverse osmosis structure 400 is connected to the first control valve 300. The reverse osmosis structure 400 is used to filter out viruses, colloidal silica, humic acid, proteins, amino acids, and other organic matter from the water, protecting the safety of residential drinking water. (Reference) Figure 2 The reverse osmosis structure 400 may include a third butterfly valve 401, a third electric valve 402, a reverse osmosis module 403, a fourth butterfly valve 404, and a fourth electric valve 405. The first output end of the reverse osmosis structure 400 outputs purified water for use in user pipelines.

[0079] Among them, the reverse osmosis module 403 can be like Figure 3 As shown, when fluid enters the outer casing, it is filtered through the membrane fibers inside the cavity. During filtration, water enters at one end of the membrane fibers, and through the lateral pressure of the water flow, the filtered water seeps out along the outer wall of the membrane fibers and collects in the purified water delivery pipeline, thereby removing organic compounds, viruses, proteins, and other substances from the fluid, effectively improving the fluid quality. The outer casing can be made of acrylonitrile-butadiene-styrene (ABS) plastic. Filter molecules are adsorbed on the membrane fibers, and maintenance is performed through regular cleaning.

[0080] like Figure 1 and Figure 2 As shown, the multi-loop water supply system also includes a concentrate recovery pipeline I. The input end of the concentrate recovery pipeline I is connected to the second output end of the reverse osmosis structure 400, and the output end of the concentrate recovery pipeline I is connected to the water storage structure 100. The second output end of the reverse osmosis structure 400 outputs concentrate, which enters the water storage structure 100 through the concentrate recovery pipeline I, thereby realizing the recycling and reuse of water resources.

[0081] The third butterfly valve 401 and the third electric valve 402 are installed on the pipeline between the first control valve 300 and the reverse osmosis module 403. The third butterfly valve 401 and the third electric valve 402 are used to control the opening and closing of the inflow pipeline of the reverse osmosis module 403. The fourth butterfly valve 404 and the fourth electric valve 405 are installed on the pipeline between the reverse osmosis module 403 and the user pipeline. The fourth butterfly valve 404 and the fourth electric valve 405 are used to control the opening and closing of the outflow pipeline of the reverse osmosis module 403.

[0082] In the first water supply circuit, water in the water supply pipeline is stored in the water storage structure 100, pressurized by the pressurization structure 200, and filtered by the reverse osmosis structure 400 to form water of general quality (tap water) which is then supplied to the user's pipeline. The on / off state of the first water supply circuit can be controlled by the first control valve 300 installed between the pressurization structure 200 and the reverse osmosis structure 400.

[0083] The second control valve 500 can be an electric valve. The first end of the second control valve 500 is connected to the second output port of the pressurizing structure 200. The input end of the water purification structure 600 is connected to the second end of the second control valve 500, and the output end of the water purification structure 600 is connected to the second input port of the reverse osmosis structure 400.

[0084] The water purification structure 600 is used to improve water quality, such as by performing sand filtration and carbon filtration. Sand filtration removes suspended impurities, microorganisms and solid impurities from municipal water, while carbon filtration removes tiny suspended impurities from municipal water.

[0085] In the second water supply circuit, water in the water supply pipeline is stored in the water storage structure 100, pressurized by the pressurization structure 200, purified by the water purification structure 600, and filtered by the reverse osmosis structure 400 to form high-quality water (drinking water) which is then supplied to the user's pipeline. The on / off state of the second water supply circuit can be controlled by a second control valve 500 located between the pressurization structure 200 and the water purification structure 600.

[0086] When the multi-circuit water supply system switches to the first water supply circuit, the first control valve 300 opens and the second control valve 500 closes, and the multi-circuit water supply system provides water of ordinary quality (tap water) to the user's pipeline. When the multi-circuit water supply system switches to the second water supply circuit, the first control valve 300 closes and the second control valve 500 opens, and the multi-circuit water supply system provides water of better quality (drinking water) to the user's pipeline.

[0087] Loop switching in a multi-loop water supply system can be achieved via a remote terminal connected to the control structure 900 (described below). A loop switching command is transmitted to the control structure 900 via signal transmission, and the control structure 900 then controls the first control valve 300 and the second control valve 500. Alternatively, loop switching in a multi-loop water supply system can also be performed via physical buttons. For example, a physical button can be electrically connected to the control structure 900, and a loop switching command can be applied via the physical button, which in turn controls the first control valve 300 and the second control valve 500.

[0088] This application provides a multi-loop water supply system. In the first water supply loop, water in the supply pipeline is stored in a water storage structure 100, pressurized by a pressurization structure 200, filtered by a reverse osmosis structure 400, and then delivered to the user's pipeline, thereby providing the user with water of general quality (tap water). In the second water supply loop, water is stored in a water storage structure 100, pressurized by a pressurization structure 200, purified by a water purification structure 600, and filtered by a reverse osmosis structure 400 before being delivered to the user's pipeline, thereby providing the user with water of higher quality (drinking water). When the multi-loop water supply system is switched to the first water supply loop, the first control valve 300 is opened and the second control valve 500 is closed. When switched to the second water supply loop, the first control valve 300 is closed and the second control valve 500 is opened. Compared with related technologies, this system allows users to flexibly choose the type of water supply by switching the water supply loops of the water supply system.

[0089] In addition, the first water supply circuit and the second water supply circuit share the water storage structure 100, the pressurization structure 200, and the reverse osmosis structure 400, which saves costs compared to setting up a separate tap water supply system and a separate direct drinking water supply system to provide tap water and direct drinking water to users.

[0090] refer to Figure 2 In some embodiments, the water purification structure 600 includes a pre-filtration structure 610 and a fine filtration structure 620 connected in series. The input end of the pre-filtration structure 610 is connected to the pressurization structure 200, specifically, the input end of the pre-filtration structure 610 is connected to the second output interface of the pressurization structure 200. The output end of the fine filtration structure 620 is connected to the reverse osmosis structure 400, specifically, the output end of the fine filtration structure 620 is connected to the second input interface of the reverse osmosis structure 400. The pre-filtration structure 610 is used for preliminary water purification, and the fine filtration structure 620 is used for secondary water purification, so that the water in the water supply pipeline is delivered to the user pipeline after being pre-purified by the pre-filtration structure 610 and then further purified by the fine filtration structure 620, thereby further improving the water quality.

[0091] like Figure 2 As shown, the fine filtration structure 620 may include a fifth butterfly valve 621, a fine filter tank 622, an exhaust valve 623, a second pressure gauge 624, and a sixth butterfly valve 625. The fine filter tank 622 is connected to the output end of the primary filtration structure 610. The fine filter tank 622 is equipped with a multi-layer glass fiber filter element, which can filter particles of 0.01μm and above, clay, colloidal silica, and microorganisms (such as bacteria, algae, etc.) in the fluid.

[0092] The fifth butterfly valve 621 is installed on the pipeline between the fine filter tank 622 and the primary filter structure 610, and the sixth butterfly valve 625 is installed on the pipeline between the fine filter tank 622 and the reverse osmosis structure 400 for easy maintenance.

[0093] Pressure gauge 624 is connected to fine filter tank 622, and vent valve 623 is located between pressure gauge 624 and fine filter tank 622. Vent valve 623 is used to facilitate the release of gas from fine filter tank 622, and pressure gauge 624 is used to display the pressure inside fine filter tank 622.

[0094] refer to Figure 2 Based on the above embodiments, the primary filtration structure 610 includes a flocculant and a quartz sand filter 611 and an activated carbon filter 612 connected in sequence. The quartz sand filter 611 is connected to a second control valve 500, and the flocculant is disposed in the pipeline between the second control valve 500 and the quartz sand filter 611.

[0095] Flocculants can coagulate impurities in a fluid into particles, facilitating solid-liquid separation and filtration, thereby improving water quality. Water filtered by the flocculant then flows through a quartz sand filter 611 for further purification. The quartz sand filter 611 uses sand as the filter medium, filtering water with high turbidity through the quartz sand to improve water quality. The water filtered by the quartz sand filter 611 then flows through an activated carbon filter 612 for further purification. The activated carbon filter 612 uses activated carbon to physically adsorb pollutants in the water, further improving water quality.

[0096] refer to Figure 2 Based on the above embodiments, the filter structure 610 further includes a connected flocculant dosing tank 613 and a dosing pump 614. The flocculant dosing tank 613 is a container holding flocculant, such as... Figure 2 As shown, the flocculant dosing tank 613 is connected to the pipeline that is connected to the second control valve 500 and the quartz sand filter 611. The flocculant dosing tank 613 adds flocculant into the pipeline. The dosing pump 614 is connected to the flocculant dosing tank 613 and is used to drive the flocculant dosing tank to add flocculant into the pipeline.

[0097] refer to Figure 2 In some embodiments, the second water supply circuit further includes a first pressure-replenishing structure 701 and a second pressure sensor 702. The first pressure-replenishing structure 701 can be a single booster pump or a booster pump group composed of multiple booster pumps. The first pressure-replenishing structure 701 is connected to the output end of the fine filtration structure 620 and is used to replenish the pressure of the water purified by the water purification structure 600. The second pressure sensor 702 is installed on the pipeline between the first pressure-replenishing structure 701 and the reverse osmosis structure 400. The second pressure sensor 702 is used to detect the pressure of the fluid purified by the water purification structure 600, thereby supplying water at a qualified pressure to the user and avoiding the problem of water shortage in high-rise buildings.

[0098] refer to Figure 1 and Figure 2In some embodiments, the multi-loop water supply system further includes a connected water quality detection structure 810 and a disinfection structure 820. The input end of the water quality detection structure 810 is connected to the output end of the water storage structure 100. The water quality detection structure 810 is used to detect the water quality at the output end of the water storage structure 100. When the water quality stored in the water storage structure 100 is poor, the water in the water tank 106 can flow into the drainage ditch 109 by opening the drain valve 108 in the water storage structure 100 and closing the second butterfly valve 110 in the water storage structure 100, thereby discharging the wastewater. The disinfection structure 820 is used to eliminate bacteria and viruses in the water output from the water storage structure 100, further improving the water quality. The disinfection method of the disinfection structure 820 can be ultraviolet disinfection.

[0099] refer to Figure 4 In some embodiments, the water quality detection structure 810 includes a residual chlorine detection unit, a turbidity detection unit, and a pH detection unit connected in sequence. The water quality is determined to be up to standard by detecting residual chlorine, turbidity, and pH. A test water sample is obtained by sampling the outlet of the water storage structure 100. This test water sample is mixed with a prepared standard solution and then flowed into a water sample measurement pool. The water sample in the measurement pool is tested by the residual chlorine detection unit, the turbidity detection unit, and the pH detection unit to obtain residual chlorine, turbidity, and pH as water quality data. This water quality data is then uploaded through a measurement control box.

[0100] refer to Figure 5 In some embodiments, the disinfection structure 820 includes a disinfection pipe 821, an ultraviolet lamp 822, and an ultraviolet lamp controller 823. The disinfection pipe 821 is connected to the input end of the water quality detection structure 810. The ultraviolet lamp 822 is installed on the disinfection pipe 821, and the ultraviolet lamp controller 823 is electrically connected to the ultraviolet lamp 822. The fluid output from the water quality detection structure 810 enters the disinfection pipe 821 and is sterilized by irradiation with the ultraviolet lamp 822. The ultraviolet lamp controller 823 is used to control the on-time of the ultraviolet lamp 822 and the intensity of the ultraviolet light. In addition, the ultraviolet lamp controller 823 can also upload the status data of the ultraviolet lamp 822.

[0101] refer to Figure 2 In some embodiments, the multi-loop water supply system further includes a second pressure-replenishing structure 703 and a third pressure sensor 704. The second pressure-replenishing structure 703 can be a single pressurizing pump or a pressurizing pump group composed of multiple pressurizing pumps. The second pressure-replenishing structure 703 is connected to the output end of the reverse osmosis structure 400 and is used to replenish the pressure of the water filtered by the reverse osmosis structure 400. The third pressure sensor 704 is installed on the pipeline between the second pressure-replenishing structure 703 and the user pipeline. The third pressure sensor 704 is used to detect the pressure of the fluid water filtered by the reverse osmosis structure 400, thereby supplying water at a qualified pressure to the user and avoiding the problem of water shortage in high-rise buildings.

[0102] In some embodiments, the multi-loop water supply system further includes a control structure 900, which is electrically connected to the first control valve 300 and the second control valve 500. When the multi-loop water supply system switches to the first water supply loop, the control structure 900 controls the opening of the first control valve 300 and the closing of the second control valve 500. When the multi-loop water supply system switches to the second water supply loop, the control structure 900 controls the closing of the first control valve 300 and the opening of the second control valve 500.

[0103] refer to Figure 6 In some embodiments, the control structure 900 further includes an integrated controller 910, which can control the opening and rotational speed of the second pressure-reducing structure 703. The control structure 900 includes a circuit breaker 911, a rectifier 912, a capacitor 913, an inverter 914, a current sensor 915, a PID controller 916, a V / f controller 917, and a PWM transmitting unit 918. The PID controller 916 is connected to a third pressure sensor 704 to obtain the fluid pressure value after filtration by the reverse osmosis structure 400. Based on the difference between the fluid pressure value and a preset pressure value, and based on a preset transfer function, the rotational speed of the second pressure-reducing structure 703 is determined, and a rotational speed control signal is output.

[0104] The input terminal of the V / f controller 917 is connected to the PID controller 916, and is used to calculate and output the corresponding output voltage of the inverter frequency converter 914 based on the speed control signal. The input terminal of the PWM transmitting unit 918 is connected to the output terminal of the V / f controller 917, and is used to determine the PWM control signal based on the output voltage and output it. The rectifier 912 is connected to the three-phase power supply through the circuit breaker 911, and is used to convert the three-phase AC signal into a three-phase DC voltage. The capacitor 913 is connected to the rectifier 912, and is used to smooth the three-phase DC voltage. The input terminal of the inverter frequency converter 914 is connected to the capacitor 913, the control terminal of the inverter frequency converter 914 is connected to the output terminal of the PWM transmitting unit 918, and the output terminal of the inverter frequency converter 914 is connected to the motor of the second voltage compensation structure 703. It is used to receive three-phase DC voltage and output three-phase AC current according to the PWM control signal to control the operation of the second voltage compensation structure 703. A current sensor 915 is set at the output terminal of the inverter frequency converter 914 to detect the actual output current of the inverter frequency converter 914.

[0105] The second pressure-replenishing structure 703 may include multiple water pumps, each corresponding to an integrated controller 910. The water supply system also includes a motor corresponding to each water pump in the second pressure-replenishing structure 703. The output terminal of each inverter frequency converter 914 can be connected to the motor of the corresponding water pump in the second pressure-replenishing structure 703, and the speed of the motor is controlled by outputting three-phase AC current. The V / f controller 917 may include industrial control software metaprograms to realize the coordinated operation of multiple pumps in the pump group. When the total rated flow of the currently operating water pumps in the second pressure-replenishing structure 703 cannot meet the system's pressure boosting demand, the system automatically determines that additional pumps are needed. The output frequency of the inverter frequency converter 914 corresponding to a non-started water pump gradually increases, and the motor speed of the non-started water pump continuously accelerates according to the feedback of the inverter frequency converter 914, starting operation. The frequency of the already running water pump will decrease to balance with the frequency of the subsequently added water pump, reducing the system's long-term power frequency operation and helping to reduce energy consumption.

[0106] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0107] It should be noted that phrases such as "in specific implementations," "in some embodiments," "in this embodiment," and "exemplarily" in the specification indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0108] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0109] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0110] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A multi-loop water supply system, characterized in that, Includes a switchable first water supply circuit and a second water supply circuit; The first water supply circuit includes a water storage structure, a pressurization structure, a first control valve, and a reverse osmosis structure; The water storage structure is used to connect to the water supply pipeline; the pressurization structure is connected to the water storage structure; the reverse osmosis structure is connected to the pressurization structure; the first control valve is located on the pipeline connecting the pressurization structure and the reverse osmosis structure; the first output end of the reverse osmosis structure is used to connect to the user pipeline. The second water supply circuit includes the water storage structure, the pressurization structure, the second control valve, the water purification structure, and the reverse osmosis structure. The input end of the water purification structure is connected to the pressurization structure, and the output end of the water purification structure is connected to the reverse osmosis structure. The second control valve is located on the pipeline connecting the pressurization structure and the water purification structure. The multi-loop water supply system also includes a concentrate recovery pipeline, the input end of which is connected to the second output end of the reverse osmosis structure, and the output end of which is connected to the water storage structure. When the multi-circuit water supply system switches to the first water supply circuit, the first control valve opens and the second control valve closes. When the multi-circuit water supply system switches to the second water supply circuit, the first control valve closes and the second control valve opens.

2. The multi-loop water supply system according to claim 1, characterized in that, The water purification structure includes a connected pre-filtration structure and a fine filtration structure; The input end of the primary filtration structure is connected to the pressurization structure, and the output end of the fine filtration structure is connected to the reverse osmosis structure.

3. The multi-loop water supply system according to claim 2, characterized in that, The primary filtration structure includes a flocculant and a quartz sand filter and an activated carbon filter connected in sequence. The quartz sand filter is connected to the second control valve; The flocculant is provided in the pipeline between the second control valve and the quartz sand filter.

4. The multi-loop water supply system according to claim 3, characterized in that, The primary filtration structure also includes a connected flocculant dosing tank and a dosing pump; The flocculant dosing tank is connected to the pipeline that is connected to the second control valve and the quartz sand filter. The flocculant dosing tank is used to add the flocculant into the pipeline by the dosing pump.

5. The multi-loop water supply system according to claim 2, characterized in that, The second water supply circuit also includes a first pressure-replenishing structure and a first pressure sensor; The first pressure replenishment structure is connected to the output end of the fine filtration structure, and the first pressure sensor is installed on the pipeline between the first pressure replenishment structure and the reverse osmosis structure.

6. The multi-loop water supply system according to any one of claims 1-5, characterized in that, The multi-loop water supply system also includes interconnected water quality detection and disinfection structures; The input end of the water quality detection structure is connected to the output end of the water storage structure, and the output end of the disinfection structure is connected to the pressurization structure.

7. The multi-loop water supply system according to claim 6, characterized in that, The water quality detection structure includes a residual chlorine detection unit, a turbidity detection unit, and a pH detection unit connected in sequence.

8. The multi-loop water supply system according to claim 6, characterized in that, The disinfection structure includes disinfection pipelines, ultraviolet lamps, and an ultraviolet lamp controller; The disinfection pipeline is connected to the output end of the water quality detection structure; The ultraviolet lamp is installed on the disinfection pipeline; The ultraviolet lamp controller is electrically connected to the ultraviolet lamp.

9. The multi-loop water supply system according to any one of claims 1-5, characterized in that, The multi-loop water supply system also includes a second pressure replenishment structure and a second pressure sensor; The second pressure-replenishing structure is connected to the output end of the reverse osmosis structure, and the second pressure sensor is installed on the pipeline between the second pressure-replenishing structure and the user pipeline.

10. The multi-loop water supply system according to claim 9, characterized in that, The multi-loop water supply system also includes a control structure, which is electrically connected to the first control valve and the second control valve.

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