Self-cleaning water supply system

Abstract

The utility model relates to the technical field of intelligent cleaning equipment for water supply tanks, in particular to a self-cleaning water supply system. The self-cleaning water supply system comprises a water tank A and a water tank B which are respectively connected to a drainage side through a valve A3 and a valve B3; the first end of the flushing water pump is connected to the tank bodies of the water tank A and the water tank B through a valve A1 and a valve B1 respectively; the second end of the flushing pipeline is connected to the water tank A and the water tank B through a valve A2 and a valve B2 respectively; wherein when one of the water tank A and the water tank B is cleaned, the other one is used as a cleaning water source. The other water tank is used as the water tank, cleaning operation is greatly facilitated, potential safety hazards are lower, and the water tank is more advanced and reasonable.

Description

Technical Field

[0001] This utility model relates to the technical field of intelligent cleaning equipment for water supply tanks, and in particular to a self-cleaning water supply system. Background Technology

[0002] Cleaning secondary water supply tanks has always been a challenge in water supply systems. Traditional tank cleaning requires regular manual operation, which is not only time-consuming and labor-intensive but also inefficient, especially for large tanks. Furthermore, manual cleaning can also contaminate the water quality due to improper operation.

[0003] To address these issues, self-cleaning water tanks have emerged on the market. However, these either have complex flushing structures or can only automate the flushing of smaller, frameless tanks. Meanwhile, some larger tanks, due to large fluctuations in water consumption, cannot match water usage with water supply, often resulting in older water ages and impacting water quality. Utility Model Content

[0004] I. Technical problems to be solved

[0005] This invention aims to solve at least partially one of the aforementioned technical problems.

[0006] II. Technical Solution

[0007] The first aspect of this utility model provides a self-cleaning water supply system. The self-cleaning water supply system includes: water tank A and water tank B, both connected to the drain side via valves A3 and B3 respectively; a flushing water pump, the first end of which is connected to the tank bodies of water tank A and water tank B via valves A1 and B1 respectively; and the second end of which is connected to the flushing pipes of water tank A and water tank B via valves A2 and B2 respectively; wherein, when cleaning one of water tanks A and B, the other is used as the cleaning water source.

[0008] In some embodiments of this utility model, it operates in one of the following two cleaning states:

[0009] ① Water tank B cleaning status

[0010] Among them, valve B3 is opened; valve A1 is opened; valve B1 is closed; valve A2 is closed; valve B2 is opened; the flushing water pump is started; the flushing water pump pumps water from water tank A into the flushing pipeline of water tank B to clean the inside of water tank B.

[0011] ② Water tank A cleaning status

[0012] During the process, valve A3 is opened; valve B1 is opened; valve A1 is closed; valve B2 is closed; valve A2 is opened; the flushing water pump is started; the flushing water pump pumps water from water tank B into the flushing pipeline of water tank A to clean the inside of water tank A.

[0013] In some embodiments of this utility model, the bodies of water tank A and water tank B are connected to the water inlet side via valve A4 and valve B4, respectively; the bodies of water tank A and water tank B are connected to the user side via valve A5 and valve B5, respectively.

[0014] In some embodiments of this utility model, when water tank B is in the cleaning state, valve A5 is open and valve B5 is closed; valve A4 is open and valve B4 is closed.

[0015] In some embodiments of this utility model, when water tank A is in the cleaning state, valve B5 is open and valve A5 is closed; valve B4 is open and valve A4 is closed.

[0016] In some embodiments of this utility model, valves A1 to A5 and valves B1 to B5 are all electrically controlled valves; the self-cleaning water supply system also includes: an automatic control module, whose control signal output terminal is respectively connected to: valves A1 to A5; valves B1 to B5; and a flushing water pump.

[0017] In some embodiments of this utility model, it further includes: a dosing disinfection system, and a pipeline connected between the flushing water pump and valves A2 and B2.

[0018] In some embodiments of this utility model, water tank A and water tank B are both self-cleaning water supply tanks. The self-cleaning water supply tank includes: a tank body; a support frame that supports the tank body internally; a flushing pipe, which is an internally connected tubular structure that allows water to pass through, and is located inside the tank body as part of the support frame; and N flushing nozzles connected to the flushing pipe, where N≥1.

[0019] In some embodiments of this utility model, the flushing nozzle in the self-cleaning water supply tank is a three-dimensional flushing nozzle with dual-dimensional automatic rotation; the three-dimensional flushing nozzle includes two or more point-out nozzles; wherein, the dual-dimensional automatic rotation includes: the flushing nozzle rotating around the flushing pipeline; and the point-out nozzles rotating around the flushing nozzle.

[0020] In some embodiments of this utility model, N≥2, and N rinsing nozzles are evenly distributed inside the housing.

[0021] In some embodiments of this utility model, the flushing pipes are evenly distributed inside the box, including: horizontal flushing pipes and vertical flushing pipes.

[0022] In some embodiments of this utility model, the flushing pipeline is a steel pipe with internal water flow.

[0023] In some embodiments of this utility model, the drain trough is located at the bottom of the tank and is connected to the drainage side through a corresponding valve.

[0024] In some embodiments of this utility model, water tank A and water tank B are both cuboid in shape and are arranged side by side.

[0025] In some embodiments of this utility model, both water tank A and water tank B include: a level gauge, installed inside the water tank; and a water flow meter, installed in the water outlet pipeline.

[0026] III. Beneficial Effects

[0027] As can be seen from the above technical solution, the present invention has at least one or a portion of the following beneficial effects compared to the prior art:

[0028] (1) Dual water tanks are used in conjunction and can be used interchangeably.

[0029] Unlike existing technologies that use sufficiently large water tanks to meet water supply needs, this invention uses a water tank consisting of tank A and tank B. Both tank A and tank B are cuboid in shape and are arranged side-by-side. The total volume of tanks A and B meets normal water supply requirements; that is, the combined volume of A and B equals that of a single large water tank to meet normal water supply needs. This design reduces the difficulty and cost of manufacturing large-volume water tanks and facilitates the layout of various pipelines.

[0030] Furthermore, compared to existing technologies that require a separate high-pressure water source for cleaning, this invention uses its own separate water tank, greatly simplifying the cleaning process, reducing safety risks, and making it more advanced and efficient. Moreover, cleaning wastewater is discharged through a bottom drain, eliminating the need for separate tank operation during the cleaning process, making it even more convenient to use.

[0031] In particular, water tank A and water tank B of this invention serve as backups for each other; one of them operates with full water while the other is emptied for cleaning, thus ensuring uninterrupted water supply even during tank cleaning. Furthermore, regarding the flushing period, this invention uses a computer program to statistically analyze the water usage patterns of the water supply system to determine off-peak usage times. Performing tank cleaning during these off-peak periods minimizes the impact of tank cleaning on the water supply system, ensuring uninterrupted water supply.

[0032] (2) The flushing pipeline and internal support structure are integrated into one.

[0033] In existing technologies, a single flushing nozzle is sufficient for internal flushing of small water supply tanks. However, for large water tanks, due to their larger size, a frame-type support system needs to be installed according to the steel plates used for each tank section. The complex structure of these frame-type support systems obstructs the flushing process, making it impossible to achieve all-around flushing from a single automatic flushing nozzle. Furthermore, a multi-nozzle system requires additional connecting pipelines, making the situation even more complicated.

[0034] This invention integrates the flushing pipeline and internal support structure into one, enabling unrestricted installation of the flushing nozzles. The nozzles can be placed in any unobstructed space without requiring additional piping, avoiding the obstruction of the water tank's internal flushing by traditional frame support systems, and achieving flushing without dead angles. Furthermore, this self-cleaning water supply tank eliminates the need for manual cleaning inside the tank, ensuring rapid resumption of production without affecting the tank's functionality. The device is simple, easy to operate, and reliably effective.

[0035] In particular, this utility model does not turn all the support structure into flushing pipes. Instead, it uses part of the support structure as flushing pipes according to the flushing needs, while the rest only performs the support function and does not need internal connection. This allows for the setting of flushing pipes as needed, reducing unnecessary internal connection nodes and places where dirt can accumulate.

[0036] (3) Two-dimensional automatic rotating three-dimensional flushing nozzle

[0037] Unlike welding branch pipes to the main pipeline to achieve X-shaped cross water pipes, this utility model adopts a three-dimensional flushing nozzle with dual-dimensional automatic rotation, which can achieve 360-degree powerful flushing without dead angles. Moreover, the nozzle rotates itself through the water spraying process, resulting in lower cost and higher reliability.

[0038] (4) Strictly control water age to ensure water safety.

[0039] Unlike existing technologies that use sufficiently large water tanks to meet water demand, this invention uses a water tank equipped with a level gauge and a flow meter for detection. The automatic control module can predict water demand during a given period, so the water tank is not always full during normal water supply and flushing. The water level in the tank is kept to a minimum, ideally just enough to meet demand. This strictly controls the water age, i.e. the time the water stays in the tank, thus improving water supply safety.

[0040] (5) Water age is controlled through data monitoring and statistical analysis, and water tanks are cleaned.

[0041] Unlike existing technologies that rely on complex water quality data monitoring and uploading to improve water quality through complete water body replacement, this invention statistically analyzes water consumption at various times throughout the day. While ensuring water safety, it monitors water consumption and level in real time using flow meters and level gauges, controlling the inflow rate and water age (storage time) to meet preset water age thresholds. This optimizes water quality and reduces water quality deterioration caused by long-term storage. On the one hand, it reduces system complexity and improves robustness; on the other hand, it saves water and improves water resource utilization efficiency. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the structure of the self-cleaning water supply tank in an embodiment of this utility model.

[0043] Figure 2 This is a schematic diagram of the connection relationship of the self-cleaning water supply system according to an embodiment of the present invention.

[0044] Figure 3 This is a flowchart of the first embodiment of the water supply method of this utility model.

[0045] Figure 4 This is a flowchart of the second embodiment of the water supply method of this utility model. Detailed Implementation

[0046] To address the issue of requiring regular manual cleaning of secondary water supply tanks, this invention provides a novel self-cleaning water tank. This tank features a flushing pipeline integrated within a support frame and is equipped with corresponding supporting facilities and a water supply method to achieve automatic cleaning, reduce water age, and ensure water quality.

[0047] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments and with reference to the accompanying drawings.

[0048] The first aspect of this utility model provides a self-cleaning water supply tank. Figure 1 This is a schematic diagram of the structure of the self-cleaning water supply tank according to an embodiment of this utility model. Figure 1 As shown, the self-cleaning water supply tank in this embodiment includes: a tank body 1; a support frame 2 that supports the tank body from the inside; a flushing pipe 3, which is a tubular structure that is internally connected and can carry water, and is located inside the tank body as part of the support frame; and a flushing nozzle 4 connected to the flushing pipe.

[0049] The following is a detailed description of each component of the self-cleaning water supply tank in this embodiment.

[0050] like Figure 1As shown, in this embodiment, the flushing pipe 3 is an internally connected steel pipe structure that allows water to pass through, including one of the following flushing pipe directions: a horizontal flushing pipe and a vertical flushing pipe. The ends of the flushing pipes are connected to the external support frame to form an integrated box-shaped support structure.

[0051] In existing technologies, a single flushing nozzle is sufficient for internal flushing of small water supply tanks. However, for large water tanks, due to their larger size, a frame-type support system needs to be installed according to the steel plates used for each tank section. The complex structure of these frame-type support systems obstructs the flushing process, making it impossible to achieve all-around flushing from a single automatic flushing nozzle. Furthermore, a multi-nozzle system requires additional connecting pipelines, making the situation even more complicated.

[0052] This invention integrates the flushing pipeline and internal support structure into one, enabling unrestricted installation of the flushing nozzles. The nozzles can be placed in any unobstructed space without requiring additional piping, avoiding the obstruction of the water tank's internal flushing by traditional frame support systems, and achieving flushing without dead angles. Furthermore, this self-cleaning water supply tank eliminates the need for manual cleaning inside the tank, ensuring rapid resumption of production without affecting the tank's functionality. The device is simple, easy to operate, and reliably effective.

[0053] In particular, this utility model does not turn all the support structure into flushing pipes. Instead, it uses part of the support structure as flushing pipes according to the flushing needs, while the rest only performs the support function and does not need internal connection. This allows for the setting of flushing pipes as needed, reducing unnecessary internal connection nodes and places where dirt can accumulate.

[0054] like Figure 1 As shown, in this embodiment, the flushing nozzle 4 is a three-dimensional flushing nozzle with dual-dimensional automatic rotation. The three-dimensional flushing nozzle includes two or more point-out water nozzles. The dual-dimensional automatic rotation includes the flushing nozzle rotating around the flushing pipeline and the point-out water nozzles rotating around the flushing nozzle.

[0055] Unlike welding branch pipes to the main pipeline to achieve X-shaped cross water pipes, this utility model adopts a three-dimensional flushing nozzle with dual-dimensional automatic rotation, which can achieve 360-degree powerful flushing without dead angles. Moreover, the nozzle rotates itself through the water spraying process, resulting in lower cost and higher reliability.

[0056] The second aspect of this utility model provides a self-cleaning water supply system. Figure 2 This is a schematic diagram showing the connection relationship of the self-cleaning water supply system according to an embodiment of this utility model. Figure 2 As shown, the self-cleaning water supply system in this embodiment includes:

[0057] Water tanks A and B both contain a level gauge 12; for water tanks A and B:

[0058] ① Both boxes are connected to the user side via valves A5 and B5 and corresponding water outlet pipes 6, respectively. Water flow meters 11 are installed on the water outlet pipes of both boxes.

[0059] ② Both tanks are connected to the drain side via valves A3 and B3 and corresponding drain pipes 8, respectively; and the overflow pipes 9 of both tanks are connected to the drain side.

[0060] ③ Both tanks are connected to the water inlet side via valves A4 and B4 and corresponding water inlet pipes, respectively;

[0061] The flushing water pump 7 has its first end connected to the tanks of water tank A and water tank B respectively through valves A1 and B1; its second end is connected to the flushing pipes 5 of water tank A and water tank B respectively through valves A2 and B2.

[0062] The chemical dosing and disinfection system 14 is a pipeline connected between the flushing water pump and valves A2 and B2;

[0063] The automatic control module 13 has its sensor signal input terminal connected to the level gauges 12 of water tank A and water tank B; its control signal output terminal is connected to: valves A1 to A5; valves B1 to B5; and flushing water pump 7, respectively.

[0064] The following sections will provide a detailed description of each component of the self-cleaning water supply system in this embodiment.

[0065] Unlike existing technologies that use sufficiently large water tanks to meet water supply demands, such as Figure 2 As shown, in this embodiment, the water supply tank consists of tank A and tank B. Both tank A and tank B are cuboid in shape and are arranged side by side. The total volume of tank A and tank B meets the normal water supply requirements; that is, the combined volume of A and B constitutes a large water tank that meets normal water supply needs. This arrangement reduces the difficulty and cost of manufacturing large-volume water tanks and facilitates the layout of various pipelines.

[0066] With the above settings, the self-cleaning water supply system of this embodiment can operate in one of the following two cleaning states:

[0067] ① Water tank B cleaning status

[0068] Among them, valve B3 is opened; valve A1 is opened; valve B1 is closed; valve A2 is closed; valve B2 is opened; the flushing water pump is started; the flushing water pump pumps water from water tank A into the flushing pipeline of water tank B to clean the inside of water tank B.

[0069] At the same time, valve A5 opens and valve B5 closes; valve A4 opens and valve B4 closes, and water tank A supplies water to users normally.

[0070] ② Water tank A cleaning status

[0071] During the process, valve A3 is opened; valve B1 is opened; valve A1 is closed; valve B2 is closed; valve A2 is opened; the flushing water pump is started; the flushing water pump pumps water from water tank B into the flushing pipeline of water tank A to clean the inside of water tank A.

[0072] At the same time, valve B5 opens and valve A5 closes; valve B4 opens and valve A4 closes, and water tank B supplies water to users normally.

[0073] As can be seen, compared to existing technologies that require a separate high-pressure water source for cleaning, this embodiment uses its own separate water tank, which greatly simplifies the cleaning operation, reduces safety risks, and is more advanced and reasonable. Furthermore, the cleaning wastewater is discharged through the bottom drain, eliminating the need for separate tank operation during the cleaning process, making it even more convenient to use.

[0074] In particular, in this embodiment, water tank A and water tank B serve as backups for each other; one of them operates with full water while the other is emptied for cleaning, thus ensuring uninterrupted water supply even during tank cleaning. Furthermore, regarding the flushing period, this invention uses a computer program to statistically analyze the water usage patterns of the water supply system to determine off-peak water usage periods. Performing tank cleaning during these off-peak periods minimizes the impact of tank cleaning on the water supply system, ensuring uninterrupted water supply.

[0075] In this embodiment, the self-cleaning water supply system includes two water tanks, but this invention is not limited thereto. In other embodiments of this invention, the self-cleaning water supply system may also include three, four, five, or more water tanks, which can also achieve the technical effect of mutual backup, with one tank being emptied for cleaning while the other provides a water source. This is also within the protection scope of this invention.

[0076] In this embodiment, both water tank A and water tank B are Figure 1 The water tanks shown are not limited to this invention. In other embodiments of this invention, as long as water tank A and water tank B are equipped with self-cleaning pipes and flushing nozzles, this invention can also be achieved and is also within the protection scope of this invention.

[0077] Based on the aforementioned self-cleaning water supply system, this invention also provides a water supply method for cleaning the water tank in the self-cleaning water supply system. In one embodiment of this invention, cleaning water tank B is taken as an example. Figure 3 This is a flowchart of the first embodiment of the water supply method according to this utility model. Figure 3 As shown, the water supply method in this embodiment includes:

[0078] Step A, cleaning preparation; water tank A has sufficient water, water tank B is emptied;

[0079] In this embodiment, water tank A is filled with water before cleaning, but this invention is not limited to this. The overall volume of the water tank is determined according to the maximum water supply during peak periods, for example, 20 cubic meters, with A and B each holding 10 cubic meters. During off-peak periods, only 2 cubic meters may be needed. Since rinsing the tank requires 5 cubic meters, water tank A only needs to hold 7 cubic meters. It does not necessarily need to be filled to 10 cubic meters.

[0080] Unlike existing technologies that use sufficiently large water tanks to meet water demand, this embodiment uses a water tank equipped with a level gauge and a flow meter for detection. The automatic control module can predict the water demand during a given period. Therefore, the water tank is not always full during normal water supply and flushing, minimizing the amount of water in the tank. Ideally, the water should be just enough to meet the demand. This strictly controls the water age, i.e. the time the water stays in the tank, thus improving water supply safety.

[0081] Step B: Open valve A4 and close valve B4; open valve A5 and close valve B5.

[0082] Step C: Close valve A3; Open valve B3;

[0083] Step D: Open valve A1 and close valve B1; close valve A2 and open valve B2.

[0084] Step E: Start the flushing water pump;

[0085] Under the pumping force of the flushing water pump 7, the water stored in tank A flows through the flushing water pump 7, valve B2, and flushing pipeline of tank B, automatically rotating the three-dimensional flushing nozzle 4. Under the pressure and backflush action of the nozzle, three-dimensional rotating flushing of the interior of tank B is achieved.

[0086] As mentioned above, in this embodiment, the self-cleaning water supply system further includes a chemical disinfection system 14, connected in a pipeline between the flushing water pump and valves A2 and B2. In this case, the water supply method of this embodiment can achieve chemical disinfection. Specifically, the water supply method of this embodiment includes:

[0087] Step S10: Perform steps A to E to clean water tank B.

[0088] Step S20: Connect the dosing disinfection system to the pipeline between the flushing water pump and water tank B to achieve dosing disinfection of water tank B;

[0089] Step S30: Disconnect the dosing and disinfection system to rinse water tank B with clean water and remove any disinfectant residue inside the tank.

[0090] In summary, the water supply method of this embodiment achieves automated cleaning of the water tank by integrating an automatic cleaning system: reducing the need for manual cleaning, improving efficiency and reducing costs.

[0091] Based on the above-mentioned self-cleaning water supply system, this utility model also provides a water supply method. In this water supply method, the automatic control module 13 acquires data from the outlet flow meter 11 and the level meter 12 in real time, and realizes the gradual prediction of water consumption patterns through conversion. Then, by controlling the inlet pipe 10 and the inlet valve, the water age in the water tank is controlled to optimize water quality.

[0092] Figure 4 This is a flowchart of the second embodiment of the water supply method according to this utility model. Figure 4 As shown, the water supply method in this embodiment includes:

[0093] Step S102: Initialize the water tank status;

[0094] Step S104: Receive the water level in the tank uploaded by the level gauge;

[0095] Step S106: Determine whether the water level in the tank is lower than the preset lower limit. If yes, proceed to step S108; otherwise, proceed to step S110.

[0096] Step S108: Increase the opening of the inlet valve to increase the inlet water flow until the preset stop water level is reached, then execute step S104;

[0097] Step S110: Detect the outflow rate;

[0098] Step S112: Determine whether the outflow rate is within the preset outflow rate range. If yes, proceed to step S116; otherwise, proceed to step S114.

[0099] Step S114: Adjust the water flow rate and execute step S110;

[0100] Step S116: Record the current time;

[0101] Step S118: Calculate the water age;

[0102] For municipal water supply, water usage occurs constantly, and water tanks are continuously replenished. Therefore, the water flow rate or water level in the tank varies over time, with intermittent replenishment or peak usage periods. The applicant proposes the following formula to calculate the average water age of the tank:

[0103]

[0104] Where V(t) and Q(t) are the water volume and flow rate in the tank over time, respectively, and T is the calculation period. Considering water usage, the value of T is determined based on actual needs, for example, it can be 1 hour, 30 minutes, or 15 minutes. In this embodiment, T = 15 minutes.

[0105] Step S120: Determine whether the average water age of the water tank exceeds the preset water age threshold. If yes, proceed to step S122; otherwise, proceed to step S124.

[0106] Step S122, reduce the water inflow, proceed to step S110;

[0107] Step S124: Analyze the time variation pattern of water consumption and record the usual patterns;

[0108] Step S126: Adjust the water inflow to match the time variation pattern of water consumption, and execute step S110;

[0109] By monitoring the correlation between water pressure, instantaneous flow rate, and total water consumption using certain methods, the water volume in the tank can be strictly controlled, and the water age can be managed. Specifically,

[0110] Unlike existing technologies that rely on complex water quality data monitoring and uploading to improve water quality through complete water body replacement, this embodiment statistically analyzes water consumption at various times throughout the day. While ensuring water safety, it monitors water consumption and water level in real time using flow meters and level gauges, controlling the inflow rate and water age (storage time) to meet preset water age thresholds. This optimizes water quality and reduces water quality deterioration caused by long-term storage. On the one hand, it reduces system complexity and improves robustness; on the other hand, it saves water and improves water resource utilization efficiency.

[0111] Step S128: Based on the water consumption variation pattern, the lowest water consumption period within the cleaning cycle is obtained as the water tank cleaning period, and the water tank is cleaned within this water tank cleaning period.

[0112] The cleaning cycle is daily, weekly, or monthly.

[0113] Taking a day as an example, the time period with the longest average water age is counted and used as the time period for water tank cleaning.

[0114] Unlike existing technologies that fix the water tank cleaning time at a specific time in the early morning, in this embodiment, the cleaning time is predicted based on the water consumption variation pattern, and the cleaning is automatically selected during the low water consumption period, which is more targeted and has less impact on normal production and life.

[0115] ② Control the water inflow rate at different time periods to control the water age.

[0116] This concludes the description of all embodiments of this utility model. Based on the above description, those skilled in the art should have a clear understanding of this utility model.

[0117] It should be noted that for some implementation methods, if they are not key contents of this utility model and are well known to those skilled in the art, they are not described in detail in the accompanying drawings or text due to space limitations. In such cases, relevant prior art can be referred to for understanding.

[0118] The ordinal numbers used in this utility model, such as "first", "second", "third", "primary", "secondary", as well as Arabic numerals and letters, are used to modify the corresponding elements (or steps). Their purpose is only to make one element (or step) with a certain name clearly distinguishable from another element (or step) with the same name. It does not mean that the element (or step) has any ordinal number, nor does it represent the order of one element (or step) with another element (or step).

[0119] Unless otherwise specified or required to occur in sequence, the order of steps in this invention is not limited to those listed above and can be varied or rearranged as required by the design.

[0120] The directional terms used in this utility model, such as "center," "lateral," "longitudinal," "top," "bottom," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," indicate only the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, throughout the accompanying drawings, the same elements are represented by the same or similar reference numerals. Also, the shapes and dimensions of the components in the drawings do not reflect actual size and proportion, but only illustrate the content of embodiments of this utility model.

[0121] Those skilled in the art will understand that in the claims and description of this utility model, the word "comprising" does not exclude the presence of elements (or steps) not listed in the claims. The word "a" or "an" preceding an element (or step) does not exclude the presence of a plurality of such elements (or steps).

[0122] Furthermore, the purpose of providing the above embodiments is merely to enable the present invention to meet legal requirements, and the present invention can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein.

[0123] Similarly, it should be understood that, for the sake of brevity, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this approach should not be construed as reflecting an intention that the claimed invention requires more features than expressly recited in each claim. Rather, as reflected in the claims, each aspect of the invention comprises fewer than all the features of the preceding single embodiment. Furthermore, embodiments may be used in combination with each other or with other embodiments based on design and reliability considerations; that is, technical features from different embodiments can be freely combined to form more embodiments. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the present invention.

[0124] The above specific embodiments have provided a detailed description of the purpose, technical means, and beneficial effects of this utility model. It should be understood that the purpose of the detailed description is to enable those skilled in the art to understand this utility model more clearly, and it is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A self-cleaning water supply system, characterized by, Comprise: Water tank A and water tank B, both of which are connected to the drainage side through valve A3 and valve B3 respectively; The flushing water pump, its first end is connected to the tank body of water tank A and water tank B through valve A1 and valve B1 respectively; its second end is connected to the flushing pipeline of water tank A and water tank B through valve A2 and valve B2 respectively; Wherein, when one of water tank A and water tank B is cleaned, the other is used as a cleaning water source.

2. The self-cleaning water supply system according to claim 1, wherein Work in one of the following two cleaning states: ① When water tank B is in cleaning state Wherein, valve B3 is opened; valve A1 is opened; valve B1 is closed; valve A2 is closed; valve B2 is opened; the flushing water pump is started; the flushing water pump pumps the water in water tank A into the flushing pipeline of water tank B, and the inside of the tank body of water tank B is cleaned; ② When water tank A is in cleaning state Wherein, valve A3 is opened; valve B1 is opened; valve A1 is closed; valve B2 is closed; valve A2 is opened; the flushing water pump is started; the flushing water pump pumps the water in water tank B into the flushing pipeline of water tank A, and the inside of the tank body of water tank A is cleaned.

3. The self-cleaning water supply system according to claim 1, wherein, The tank bodies of water tank A and water tank B are connected to the water inlet side through valve A4 and valve B4 respectively; The tank bodies of water tank A and water tank B are connected to the user side through valve A5 and valve B5 respectively.

4. The self-cleaning water supply system according to claim 3, wherein, When water tank B is in cleaning state, valve A5 is opened, and valve B5 is closed; valve A4 is opened, and valve B4 is closed; Or, when water tank A is in cleaning state, valve B5 is opened, and valve A5 is closed; valve B4 is opened, and valve A4 is closed.

5. The self-cleaning water supply system according to claim 3, wherein, The valves A1-A5 and B1-B5 are electrically controlled valves; The self-cleaning water supply system further comprises a self-control module, the control signal output ends of which are connected to the valves A1-A5, B1-B5, and the flushing water pump respectively.

6. The self-cleaning water supply system according to claim 1, wherein Further comprise: A dosing and disinfecting system connected to the pipeline between the flushing water pump and the valves A2 and B2.

7. The self-cleaning water supply system according to claim 6, wherein The water tank A and water tank B are both self-cleaning water supply tanks, which comprise: A tank body; A support frame supporting the tank body inside; A flushing pipeline, which is a tubular structure with water flowing inside, and is located inside the tank body as part of the support frame; N flushing nozzles connected to the flushing pipeline, N≥1.

8. The self-cleaning water supply system according to claim 7, wherein In the self-cleaning water supply tank, the flushing nozzles are three-dimensional flushing nozzles with automatic rotation in two dimensions; The three-dimensional flushing nozzles comprise two or more point water outlet nozzles; wherein, the automatic rotation in two dimensions comprises rotation of the flushing nozzle around the flushing pipeline and rotation of the point water outlet nozzle around the flushing nozzle.

9. The self-cleaning water supply system according to claim 7, wherein In the self-cleaning water supply tank, N≥2, N flushing nozzles are evenly arranged inside the tank body; And / or, the flushing pipeline is evenly distributed inside the tank body, comprising horizontal flushing pipelines and vertical flushing pipelines; And / or, the flushing pipeline is a steel pipe with water flowing inside; And / or, a sewage tank is located at the bottom of the tank body, which is connected to the drainage side through a corresponding valve.

10. The self-cleaning water supply system according to any one of claims 1 to 9, characterized in that, the water tank A and the water tank B are both cuboid in shape and arranged side by side; and / or, the water tank A and the water tank B both comprise: a liquid level meter arranged in the water tank; and a water outlet flow meter arranged in the water outlet pipeline.

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