Self-cleaning water supply tank, self-cleaning water supply system and water supply method

Abstract

The invention relates to the technical field of intelligent cleaning equipment for water supply tanks, in particular to a self-cleaning water supply tank, a self-cleaning water supply system and a water supply method. The self-cleaning water supply tank comprises a tank body; a support frame that supports the case therein; the flushing pipeline is of a tubular structure which is internally communicated and through which water can pass, and serves as a part of the supporting frame to be located in the box body; the N flushing nozzles are connected to the flushing pipeline, and N is larger than or equal to 1. A flushing pipeline and an internal supporting structure are combined into a whole, and the spray head can be arranged in any unshielded space without adding an additional pipeline, so that unlimited mounting of the flushing spray head is realized, obstruction of a traditional frame supporting system to internal flushing of the water tank is avoided, and dead-corner-free flushing is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent cleaning equipment for water supply tanks, and in particular to a self-cleaning water supply tank, a self-cleaning water supply system and a water supply method. Background Art

[0002] The cleaning of secondary water supply tanks has always been a challenge in water supply systems. Traditional tank cleaning requires regular manual work, which is not only time-consuming and labor-intensive, but also inefficient, especially for large tanks. In addition, manual cleaning may also cause water pollution due to improper operation.

[0003] To solve these problems, automatic cleaning water tanks have appeared on the market, but they either have complex flushing structures or can only achieve automatic flushing of smaller water tanks without internal frames. At the same time, some larger water tanks cannot match water use with water supply due to large changes in water consumption, and the water age is often too old, affecting the water quality of the water supply. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] The present invention is expected to at least partially solve one of the above technical problems.

[0006] 2. Technical Solution

[0007] The first aspect of the present invention provides a self-cleaning water supply tank. The self-cleaning water supply tank comprises: a tank body; a support frame, which supports the tank body internally; a flushing pipeline, which is a tubular structure that is internally connected and can pass water, and is located inside the tank body as a part of the support frame; and N flushing nozzles, which are connected to the flushing pipeline, where N≥1.

[0008] In some embodiments of the present invention, the flushing pipelines are evenly distributed inside the box, including: horizontal flushing pipelines and vertical flushing pipelines.

[0009] In some embodiments of the present invention, the flushing pipeline is a steel pipe through which water can flow.

[0010] In some embodiments of the present invention, N≥2, and N flushing nozzles are evenly arranged inside the box.

[0011] In some embodiments of the present invention, the flushing nozzle is: a three-dimensional flushing nozzle that automatically rotates in two dimensions, and the three-dimensional flushing nozzle includes: two or more point water nozzles; wherein the two-dimensional automatic rotation includes: the flushing nozzle rotates around the flushing pipeline; the point water nozzle rotates around the flushing nozzle.

[0012] In some embodiments of the present invention, a drain tank is located at the bottom of the tank, and the drain tank is connected to the drain side through a corresponding valve.

[0013] The second aspect of the present invention provides a self-cleaning water supply system. The self-cleaning water supply system comprises: a water tank A and a water tank B, both of which are self-cleaning water supply tanks as described above, and both are connected to the drainage side through valves A3 and B3 respectively; a flushing water pump, a first end of which is connected to the tank body of the water tank A and the water tank B through valves A1 and B1 respectively; a second end of which is connected to the flushing pipeline of the water tank A and the water tank B through valves A2 and B2 respectively; wherein, when one of the water tanks A and B is cleaned, the other is used as a cleaning water source.

[0014] In some embodiments of the present invention, the bodies of water tank A and water tank B are connected to the water inlet side through valve A4 and valve B4, respectively; the bodies of water tank A and water tank B are connected to the user side through valve A5 and valve B5, respectively; valves A1~A5; valves B1~B5 are all electrically controlled valves; and also include: an automatic control module, whose control signal output end is respectively connected to: valves A1~A5; valves B1~B5; and a flushing water pump.

[0015] In some embodiments of the present invention, both water tank A and water tank B include: a liquid level meter, arranged in the water tank; a water outlet flow meter, arranged in the water outlet pipeline; the sensor signal input end of the automatic control module is connected to the liquid level meter and the water outlet flow meter of water tank A and water tank B.

[0016] In some embodiments of the present invention, water tank A and water tank B are both in the shape of a cuboid and are arranged side by side.

[0017] In some embodiments of the present invention, the total volume of water tank A and water tank B meets normal water supply needs.

[0018] In some embodiments of the present invention, water tank A and water tank B serve as backup for each other; one of them is operated with full water, and the other is emptied for cleaning.

[0019] In some embodiments of the present invention, the self-cleaning water supply system operates in one of the following two cleaning states: ① cleaning state of water tank B, in which 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 to clean the inside of the water tank B; ② cleaning state of water tank A, in which 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 to clean the inside of the water tank A.

[0020] The third aspect of the present invention provides a water supply method. The water supply method is used to clean the water tank B in the above self-cleaning water supply system, and is executed by the automatic control module. The water supply method includes: step C, opening valve B3; step D, opening valve A1 and closing valve B1; closing valve A2 and opening valve B2; step E, starting the flushing water pump, pumping the water in the box body of the water tank A into the flushing pipeline of the water tank B, and cleaning the inside of the box body of the water tank B.

[0021] In some embodiments of the present invention, step C further comprises: closing valve A3;

[0022] In some embodiments of the present invention, before step D, the following steps are included: step A, ensuring that there is sufficient cleaning water in water tank A and emptying water tank B; step B, opening valve A5 and closing valve B5; opening valve A4 and closing valve B4;

[0023] In some embodiments of the present invention, the self-cleaning water supply system also includes: a drug-dosing disinfection system, which is connected to the pipeline between the flushing water pump and valves A2 and B2; the water supply method includes: step S10, executing steps C to E, to achieve clean water cleaning of water tank B; step S20, connecting the drug-dosing disinfection system to the pipeline between the flushing water pump and water tank B, to achieve drug-dosing disinfection of water tank B; step S30, disconnecting the drug-dosing disinfection system, to achieve clean water cleaning of water tank B, and to remove the disinfectant residue in the water tank.

[0024] The fourth aspect of the present invention provides a water supply method. The water supply method is used to control the water age of water tank A or water tank B in the above self-cleaning water supply system, and is executed by an automatic control module. The water supply method includes: step S110, detecting the water flow rate; step S118, calculating the average water age of the water tank according to the following formula: Among them, V(t) and Q(t) are the water storage volume and flow rate in the water tank that change with time, and T is the calculation period; step S120, determine whether the average water age of the water tank exceeds the preset water age threshold, if so, execute step S122; step S122, reduce the water intake, and execute step S110.

[0025] In some embodiments of the present invention, in step S118, the calculation period T is 1 hour, 30 minutes or 15 minutes.

[0026] In some embodiments of the present invention, in step S120, if the average water age of the water tank does not exceed the preset water age threshold, step S124 is executed; step S110 also includes: step S124, analyzing the time variation pattern of water consumption; step S126, adjusting the water intake to match the time variation pattern of water consumption, and executing step S110; step S128, obtaining the minimum water consumption period within the cleaning cycle according to the water consumption variation pattern, and cleaning the water tank within the minimum water consumption period, and the cleaning cycle is daily, weekly or monthly.

[0027] In some embodiments of the present invention, a liquid level gauge is provided in the water tank; before step S110, it also includes: step S104, receiving the water level of the water tank uploaded by the liquid level gauge; step S106, judging whether the water level of the water tank is lower than the preset water level lower limit, if so, executing step S108; otherwise, executing step S110; step S108, increasing the water intake, and executing step S104.

[0028] In some embodiments of the present invention, a water outlet flow meter is provided on the water outlet pipe of the water tank, and steps S110 and S228 also include: step S112, determining whether the water outlet flow is within a preset water outlet flow range, if so, executing step S116; otherwise, executing step S114; step S114, adjusting the water outlet flow, executing step S110; step S116, recording the current time.

[0029] 3. Beneficial Effects

[0030] It can be seen from the above technical solution that the present invention has at least one or part of the following beneficial effects compared with the prior art:

[0031] (1) Flushing pipeline and internal support structure are integrated into one

[0032] In the prior art, for small water supply tanks, one flushing nozzle can be used to achieve internal flushing. However, for large water tanks, due to the large volume of the water tank, a frame-type support system needs to be set up inside according to the steel plates used for each tank body. These frame-type support systems have complex structures and cause flushing obstructions, making it impossible to achieve all-round flushing with a single automatic flushing nozzle. In addition, a multi-nozzle system requires additional connecting pipes, which makes the situation even more complicated.

[0033] The present invention combines the flushing pipeline and the internal support structure into one, and the nozzle can be arranged in any unobstructed space without adding additional pipelines, thereby realizing unlimited installation of the flushing nozzle, avoiding the obstruction of the traditional frame support system to the internal flushing of the water tank, and realizing flushing without dead angles. In addition, the self-cleaning water supply tank of the present invention does not require personnel to enter the water tank for manual cleaning, does not affect the rapid resumption of production of the water tank, has a simple device, is easy to operate, and has reliable and effective functions.

[0034] In particular, the present invention does not convert the entire supporting structure into a flushing pipeline, but uses part of the supporting structure as a flushing pipeline according to flushing needs, and the remaining part only realizes the supporting function without the need for internal connection, thereby realizing the on-demand setting of flushing pipelines and reducing unnecessary internal connecting nodes and places for dirt and grime to accumulate.

[0035] (2) Dual-dimensional automatic rotating three-dimensional flushing nozzle

[0036] Different from welding branches to the main pipeline to achieve X-shaped cross water pipes, the present invention adopts a two-dimensional automatically rotating three-dimensional flushing nozzle, which can achieve 360-degree powerful flushing without dead ends, and the nozzle can realize its own rotation through the water spraying process, which achieves lower cost and higher reliability.

[0037] (3) Dual water tanks cooperate and provide backup for each other

[0038] Different from the prior art that sets a water tank large enough to meet the water supply demand, in the present invention, the water supply tank is composed of a water tank A and a water tank B. Both water tank A and water tank B are in the shape of a rectangular parallelepiped, and the two are arranged side by side. The total volume of water tank A + water tank B meets the normal water supply demand, that is, the volume of A + B is a large water tank that meets the normal water supply demand. Such an arrangement can reduce the difficulty and cost of making a large-volume water tank, and is also conducive to the layout of various pipelines.

[0039] In addition, compared with the prior art of separately finding a high-pressure water source for cleaning, the present invention uses another water tank as a water tank, which greatly facilitates the cleaning operation, has lower safety risks, and is more advanced and reasonable. In addition, the cleaning wastewater is discharged through the bottom drainage trough, and the cleaning process does not require a separate tank operation, which is more convenient to use.

[0040] In particular, the water tank A and the water tank B of the present invention are used as backup for each other; one of them is fully filled with water and the other is emptied for cleaning, thereby achieving uninterrupted water supply when the water tank is cleaned. At the same time, regarding the flushing period, the present invention uses a computer program to calculate the water use pattern of the water supply system and obtain the low water use period. Cleaning the water tank during the low water use period can minimize the impact of water tank cleaning on the water supply system and achieve uninterrupted water use.

[0041] (4) Strictly control water age to ensure water safety

[0042] Different from the prior art which sets a large enough water tank to meet the water demand, the present invention sets a liquid level meter and a water outlet flow meter for detection in the water tank. The automatic control module can predict the water demand in that period. Therefore, the water supply and flushing water tanks are not necessarily full at ordinary times. The water in the water tank is minimized as much as possible. The most ideal situation is to have just enough water. In this way, the water age, that is, the time that water stays in the water tank, is strictly controlled, thereby improving the water supply safety.

[0043] (5) Control water age and clean water tanks through data monitoring and statistics

[0044] Different from the prior art which improves water quality through complex water quality data monitoring and uploading and complete water body replacement, the present invention counts the water consumption in each time period of a day, monitors the water consumption and water level in real time through flow meters and liquid level meters while ensuring water safety, controls the water inlet rate, and controls the water age (water storage time) to meet the preset water age threshold, thereby optimizing water quality and reducing water quality degradation caused by long-term water storage. On the one hand, it reduces the complexity of the system and improves its robustness; on the other hand, it can save water and improve the utilization efficiency of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic structural diagram of a self-cleaning water supply tank according to an embodiment of the present invention.

[0046] Figure 2 Schematic diagram of the connection relationship of the self-cleaning water supply system according to an embodiment of the present invention.

[0047] Figure 3 This is a flow chart of the first embodiment of the water supply method according to the present invention.

[0048] Figure 4 This is a flow chart of a second embodiment of a water supply method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0049] In order to solve the problem that the secondary water supply tank needs to be manually cleaned regularly, the present invention provides a new type of self-cleaning water tank, which has a flushing pipeline integrated in a supporting frame and is equipped with corresponding supporting facilities and a water supply method to achieve automatic cleaning, reduce water age and ensure water quality.

[0050] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific implementation methods and with reference to the accompanying drawings.

[0051] A first aspect of the present invention provides a self-cleaning water supply tank. Figure 1 Schematic diagram of the structure of the self-cleaning water supply tank according to an embodiment of the present invention. Figure 1 As shown, the self-cleaning water supply tank of this embodiment includes: a box body 1; a support frame 2, which supports the box body from the inside; a flushing pipeline 3, which is an internally connected tubular structure that can pass water and is located inside the box body as a part of the support frame; and a flushing nozzle 4, which is connected to the flushing pipeline.

[0052] The various components of the self-cleaning water supply tank of this embodiment are described in detail below.

[0053] like Figure 1As shown, in this embodiment, the flushing pipeline 3 is a steel pipe structure with internal communication and water flow, including one of the following directional flushing pipelines: a horizontal flushing pipeline and a vertical flushing pipeline. The end points of the flushing pipeline are connected to the external support frame to form an integrated design of the box body overall support structure.

[0054] In the prior art, for small water supply tanks, one flushing nozzle can be used to achieve internal flushing. However, for large water tanks, due to the large volume of the water tank, a frame-type support system needs to be set up inside according to the steel plates used for each tank body. These frame-type support systems have complex structures and cause flushing obstructions, making it impossible to achieve all-round flushing with a single automatic flushing nozzle. In addition, a multi-nozzle system requires additional connecting pipes, which makes the situation even more complicated.

[0055] The present invention combines the flushing pipeline and the internal support structure into one, thereby realizing unlimited installation of the flushing nozzle. The nozzle can be arranged in any unobstructed space without adding additional pipelines, avoiding the obstruction of the traditional frame support system to the internal flushing of the water tank, and realizing flushing without dead angles. In addition, the self-cleaning water supply tank of the present invention does not require personnel to enter the water tank for manual cleaning, does not affect the rapid resumption of production of the water tank, has a simple device, is easy to operate, and has reliable and effective functions.

[0056] In particular, the present invention does not convert the entire supporting structure into a flushing pipeline, but uses part of the supporting structure as a flushing pipeline according to flushing needs, and the remaining part only realizes the supporting function without the need for internal connection, thereby realizing the on-demand setting of flushing pipelines and reducing unnecessary internal connecting nodes and places for dirt and grime to accumulate.

[0057] like Figure 1 As shown, in this embodiment, the flushing nozzle 4 is: a three-dimensional flushing nozzle that automatically rotates in two dimensions, and the three-dimensional flushing nozzle includes: two or more point water nozzles; wherein, the two-dimensional automatic rotation includes: the flushing nozzle rotates around the flushing pipeline; the point water nozzle rotates around the flushing nozzle.

[0058] Different from welding branches to the main pipeline to achieve X-shaped cross water pipes, the present invention adopts a two-dimensional automatically rotating three-dimensional flushing nozzle, which can achieve 360-degree powerful flushing without dead ends, and the nozzle can realize its own rotation through the water spraying process, which achieves lower cost and higher reliability.

[0059] A second aspect of the present invention provides a self-cleaning water supply system. Figure 2 Schematic diagram of the connection relationship of the self-cleaning water supply system according to an embodiment of the present invention. Figure 2 As shown, the self-cleaning water supply system of this embodiment includes:

[0060] Water tank A and water tank B both include: a liquid level meter 12; for water tank A and water tank B:

[0061] ① The two boxes are connected to the user side through valve A5 and valve B5 and the corresponding water outlet pipe 6, and a water outlet flow meter 11 is provided on the water outlet pipes of both;

[0062] ② The two boxes are connected to the drainage side through valve A3 and valve B3 and the corresponding emptying pipe 8 respectively; and the overflow pipe 9 of the two boxes is connected to the drainage side;

[0063] ③The two boxes are connected to the water inlet side through valves A4 and B4 and corresponding water inlet pipes respectively;

[0064] A flushing water pump 7, a first end of which is connected to the tank bodies of the water tank A and the water tank B through valves A1 and B1 respectively; a second end of which is connected to the flushing pipeline 5 of the water tank A and the water tank B through valves A2 and B2 respectively;

[0065] The dosing disinfection system 14 is connected to the pipeline between the flushing water pump and valves A2 and B2;

[0066] The automatic control module 13 has its sensor signal input end connected to the liquid level gauges 12 of the water tanks A and B; its control signal output end is respectively connected to: valves A1 to A5; valves B1 to B5; and flushing water pump 7.

[0067] The following is a detailed description of each component of the self-cleaning water supply system of this embodiment.

[0068] Different from the prior art which sets a large enough water tank to meet the water supply demand, such as Figure 2 As shown, in this embodiment, the water supply tank is composed of a water tank A and a water tank B. Both water tank A and water tank B are in the shape of a rectangular parallelepiped, and the two are arranged side by side. The total volume of water tank A + water tank B meets the normal water supply demand, that is, the volume of A + B and the normal setting meet the normal water supply demand of a large water tank. Such a setting can reduce the difficulty and cost of making a large volume water tank, and is also conducive to the layout of various pipelines.

[0069] Through the above configuration, the self-cleaning water supply system of this embodiment can work in one of the following two cleaning states:

[0070] ①Water tank B cleaning status

[0071] 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 the water in water tank A into the flushing pipeline of water tank B to clean the inside of water tank B.

[0072] At the same time, valve A5 is opened and valve B5 is closed; valve A4 is opened and valve B4 is closed, and water tank A supplies water to users normally.

[0073] ②Water tank A cleaning status

[0074] Among them, 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 to clean the inside of water tank A.

[0075] At the same time, valve B5 is opened and valve A5 is closed; valve B4 is opened and valve A4 is closed, and water tank B supplies water to users normally.

[0076] It can be seen that compared with the prior art of separately finding a high-pressure water source for cleaning, this embodiment uses another water tank of its own as a water tank, which greatly facilitates the cleaning operation, has lower safety risks, and is more advanced and reasonable. In addition, the cleaning wastewater is discharged through the bottom drainage trough, and the cleaning process does not require a separate tank operation, which is more convenient to use.

[0077] In particular, the water tank A and the water tank B of this embodiment are backup for each other; one of them is running with full water, while the other is emptied for cleaning, so that uninterrupted water supply can be achieved when the water tank is cleaned. At the same time, regarding the flushing period, the present invention uses a computer program to calculate the water use pattern of the water supply system and obtain the low water use period. Cleaning the water tank during the low water use period can minimize the impact of water tank cleaning on the water supply system and achieve uninterrupted water use.

[0078] In this embodiment, the self-cleaning water supply system includes two water tanks, but the present invention is not limited thereto. In other embodiments of the present invention, the self-cleaning water supply system may also include three, four, five or more water tanks, which can also serve as backup for each other, with one of them being emptied for cleaning and the other providing water, which also falls within the scope of protection of the present invention.

[0079] In this embodiment, water tank A and water tank B are Figure 1 In other embodiments of the present invention, as long as the water tank A and the water tank B are provided with self-cleaning pipelines and flushing nozzles, the present invention can also be implemented and is also within the protection scope of the present invention.

[0080] Based on the above self-cleaning water supply system, the present invention further provides a water supply method for cleaning a water tank in the self-cleaning water supply system. In one embodiment of the present invention, cleaning of water tank B is taken as an example. Figure 3 This is a flow chart of the first embodiment of the water supply method according to the present invention. Figure 3 As shown, the water supply method of this embodiment includes:

[0081] Step A, cleaning preparation; water tank A has sufficient water, and water tank B is emptied;

[0082] In this embodiment, water tank A is full of water before washing, but the present invention is not limited to this. The overall volume of the water tank is determined according to the maximum water supply during the peak period of water supply, for example, 20 cubic meters, A and B are 10 cubic meters each, and when the water consumption is low, only 2 cubic meters may be needed. The flushing water tank requires 5 cubic meters, so water tank A only needs to have 7 cubic meters. It does not necessarily need to be full of 10 cubic meters of water.

[0083] Different from the prior art which sets a large enough water tank to meet the water demand, in this embodiment, the water tank is provided with a liquid level meter and a water outlet flow meter for detection. The automatic control module can predict the water demand during the period. Therefore, the water supply and flushing tanks are not necessarily full during normal times. The water in the water tank is minimized as much as possible. The ideal situation is to have just enough water. In this way, the water age, that is, the time the water stays in the water tank, is strictly controlled, thereby improving the water supply safety.

[0084] Step B, open valve A4 and close valve B4; open valve A5 and close valve B5;

[0085] Step C, close valve A3; open valve B3;

[0086] Step D, open valve A1, close valve B1; close valve A2, open valve B2;

[0087] Step E, starting the flushing water pump;

[0088] Under the pumping force of the flushing water pump 7, the water stored in the A tank passes through the flushing water pump 7, valve B2 and the water tank B flushing pipeline, and automatically rotates the three-dimensional flushing nozzle 4. Under the pressure and the nozzle recoil, the three-dimensional rotating flushing of the inside of the water tank B is realized.

[0089] As mentioned above, in this embodiment, the self-cleaning water supply system also includes: a dosing disinfection system 14, which is connected to the pipeline between the flushing water pump and the valves A2 and B2. In this case, the water supply method of this embodiment can achieve dosing disinfection. Specifically, the water supply method of this embodiment includes:

[0090] Step S10, executing steps A to E to clean the water tank B with clean water;

[0091] Step S20, connecting the dosing disinfection system to the pipeline between the flushing water pump and the water tank B to achieve dosing disinfection of the water tank B;

[0092] Step S30, disconnect the dosing disinfection system, clean the water tank B with clean water, and remove the disinfectant residue in the water tank.

[0093] In summary, the water supply method of this embodiment realizes automatic cleaning of the water tank by integrating an automatic cleaning system, thereby reducing the need for manual cleaning, improving efficiency and reducing costs.

[0094] Based on the above self-cleaning water supply system, the present invention also provides a water supply method. In the water supply method, the automatic control module 13 obtains the data of the water flow meter 11 and the liquid level meter 12 in real time, realizes the gradual estimation of the water consumption law through conversion, and then controls the water inlet pipeline 10 and the water inlet valve to realize the control of the water age in the water tank to optimize the water quality.

[0095] Figure 4 This is a flow chart of the second embodiment of the water supply method according to the present invention. Figure 4 As shown, the water supply method of this embodiment includes:

[0096] Step S102, initializing the water tank state;

[0097] Step S104, receiving the water level of the water tank uploaded by the liquid level meter;

[0098] Step S106, determining whether the water level in the water tank is lower than a preset water level lower limit, if yes, executing step S108; otherwise, executing step S110;

[0099] Step S108, increasing the opening of the water inlet valve to increase the water inlet until the preset water stop level is reached, and then executing step S104;

[0100] Step S110, detecting water flow rate;

[0101] Step S112, determining whether the water flow rate is within a preset water flow rate range, if yes, executing step S116; otherwise, executing step S114;

[0102] Step S114, adjust the water flow rate, and execute step S110;

[0103] Step S116, recording the current time;

[0104] Step S118, calculating water age;

[0105] For municipal water use, water is used all the time, and water tank refilling is also ongoing. Therefore, the flow or water level of the water tank changes over time, and there are intermittent water refilling or water use peaks. The applicant proposed the following formula to calculate the average water age of the water tank:

[0106]

[0107] Wherein, V(t) and Q(t) are the water storage and flow rate in the water tank that change with time, and T is the calculation period. Considering the water usage, the value of T is determined according to actual needs, for example, it can be 1 hour, 30 minutes or 15 minutes. In this embodiment, T = 15min.

[0108] Step S120, determining whether the average water age of the water tank exceeds a preset water age threshold, if yes, executing step S122; otherwise, executing step S124;

[0109] Step S122, reduce the water intake and execute step S110;

[0110] Step S124, analyzing the time variation pattern of water consumption and recording the usual pattern;

[0111] Step S126, adjusting the water intake to match the time variation pattern of the water consumption, and executing step S110;

[0112] Through certain monitoring methods such as water pressure, instantaneous flow and other correlation laws with total water consumption, the water volume in the water tank and the water age can be strictly controlled; specifically,

[0113] Different from the prior art which improves water quality through complex water quality data monitoring and uploading and complete water body replacement, in this embodiment, the water consumption in each time period of a day is counted, and the water consumption and water level are monitored in real time by flow meters and liquid level meters while ensuring water safety, and the water inlet rate is controlled. The water age (water storage time) is controlled to meet the preset water age threshold, thereby optimizing the water quality and reducing the water quality degradation caused by long-term water storage. On the one hand, it reduces the complexity of the system and improves its robustness; on the other hand, it can save water and improve the utilization efficiency of water resources.

[0114] Step S128, according to the water consumption variation rule, the minimum water consumption period in the cleaning cycle is obtained as the water tank cleaning period, and the water tank is cleaned within the water tank cleaning period.

[0115] Wherein, the cleaning cycle is daily, weekly or monthly.

[0116] Taking each day as an example, the time period with the longest average water age in a day is counted and this time period is used as the time period for cleaning the water tank.

[0117] Different from the prior art which selects a fixed time period in the early morning for cleaning the water tank, in this embodiment, the cleaning time is predicted according to the change pattern of water consumption, and the low water consumption period is automatically selected for flushing, which is more targeted and has less impact on normal production and life.

[0118] ②Control the water inflow rate in each time period and control the water age

[0119] So far, the various embodiments of the present invention have been introduced. According to the above description, those skilled in the art should have a clear understanding of the present invention.

[0120] It should be noted that, for certain implementations, if they are not the key content of the present invention and are well known to ordinary technicians in the relevant technical field, they are not described in detail in the drawings or text of the specification due to space limitations. In this case, reference can be made to relevant existing technologies for understanding.

[0121] The ordinal numbers used in the present invention, such as "first", "second", "third", "primary", "secondary", as well as Arabic numerals, letters, etc., to modify the corresponding elements (or steps), are intended only to clearly distinguish an element (or step) with a certain name from another element (or step) with the same name, and do not mean that the element (or step) has any ordinal number, nor do they represent the order of one element (or step) and another element (or step).

[0122] For the steps in the present invention, unless specifically described or the steps must occur in sequence, the order of the steps is not limited to the above list and can be changed or rearranged according to the desired design.

[0123] The directional terms mentioned in the present invention, such as "center", "lateral", "longitudinal", "top", "bottom", "up", "down", "front", "back", "left", "right", "inside", "outside", etc., indicate the orientation or position relationship only based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Moreover, throughout the drawings, the same elements are represented by the same or similar figure marks. Moreover, the shapes and sizes of the components in the drawings do not reflect the actual size and proportion, but only illustrate the contents of the embodiments of the present invention.

[0124] Those skilled in the art should understand that in the claims and description of the present invention, the word "comprising" does not exclude the existence of elements (or steps) not listed in the claims. The word "a" or "an" preceding an element (or step) does not exclude the existence of multiple such elements (or steps).

[0125] Furthermore, the above embodiments are provided merely to enable the present invention to satisfy legal requirements, and the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

[0126] Similarly, it should be understood that in order to simplify the present invention, in the above description of the exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the invention should not be interpreted as reflecting the following intention: the claimed invention requires more features than the features explicitly stated in each claim. More specifically, as reflected in the claims, each inventive aspect lies in less than all the features of the previous single embodiment. Moreover, the embodiments can be mixed and matched with each other or with other embodiments based on design and reliability considerations, that is, the technical features in different embodiments can be freely combined to form more embodiments. Therefore, the claims following the specific embodiment are hereby explicitly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present invention.

[0127] The above specific embodiments provide a detailed description of the objectives, technical means and beneficial effects of the present invention. It should be understood that the purpose of the detailed description is to enable those skilled in the art to understand the present invention more clearly, and it is not used to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-cleaning water supply tank, characterized in that: include: Box; A support frame internally supporting the box; The flushing pipeline is a tubular structure that is internally connected and can pass water, and is located inside the box as a part of the support frame; N flushing nozzles are connected to the flushing pipeline, where N≥1.

2. The self-cleaning water supply tank according to claim 1, characterized in that: The flushing pipelines are evenly distributed inside the box, including: horizontal flushing pipelines and vertical flushing pipelines; And / or, the flushing pipeline is a steel pipe through which water can flow; and / or, N ≥ 2, N flushing nozzles are evenly arranged inside the box; And / or, the flushing nozzle is: a three-dimensional flushing nozzle that automatically rotates in two dimensions, and the three-dimensional flushing nozzle includes: two or more point water nozzles; wherein the two-dimensional automatic rotation includes: the flushing nozzle rotates around the flushing pipeline; the point water nozzle rotates around the flushing nozzle; And / or, a drain tank is located at the bottom of the box body, and the drain tank is connected to the drainage side through a corresponding valve.

3. A self-cleaning water supply system, characterized in that: include: Water tank A and water tank B, both of which are self-cleaning water supply tanks as claimed in claim 1, are connected to the drainage side through valve A3 and valve B3 respectively; A flushing water pump, a first end of which is connected to the tank bodies of water tank A and water tank B through valve A1 and valve B1 respectively; a second end of which is connected to the flushing pipelines of water tank A and water tank B through valve A2 and valve B2 respectively; When one of the water tank A and the water tank B is cleaned, the other one is used as a cleaning water source.

4. The self-cleaning water supply system according to claim 3, characterized in that: The tanks of water tank A and water tank B are connected to the water inlet side through valve A4 and valve B4 respectively; The tanks of water tank A and water tank B are connected to the user side through valve A5 and valve B5 respectively; Valves A1~A5; Valves B1~B5 are all electrically controlled valves; It also includes: an automatic control module, whose control signal output ends are respectively connected to: valves A1-A5; valves B1-B5; and a flushing water pump.

5. The self-cleaning water supply system according to claim 4, characterized in that: Both the water tank A and the water tank B include: a liquid level meter, which is arranged in the water tank; a water outlet flow meter, which is arranged in the water outlet pipeline; the sensor signal input end of the automatic control module is connected to the liquid level meter and the water outlet flow meter of the water tank A and the water tank B; And / or, the water tank A and the water tank B are both in a rectangular shape and are arranged side by side; and / or, the total volume of water tank A and water tank B meets normal water supply demand; And / or, water tank A and water tank B serve as backup for each other; one of them is operated with full water, and the other is emptied for cleaning; And / or, the self-cleaning water supply system operates in one of the following two cleaning states: ① cleaning state of water tank B, in which 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 to clean the inside of the water tank B; ② cleaning state of water tank A, in which 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 to clean the inside of the water tank A.

6. A water supply method, characterized in that: For cleaning the water tank B in the self-cleaning water supply system according to claim 4, which is executed by the automatic control module, the water supply method comprises: Step C, open valve B3; Step D, open valve A1, close valve B1; close valve A2, open valve B2; Step E, start the flushing water pump to pump the water in the body of water tank A into the flushing pipeline of water tank B to clean the inside of the body of water tank B.

7. The water supply method according to claim 6, characterized in that: The step C also includes: closing valve A3; And / or, before step D, the step further includes: Step A, ensure that there is sufficient cleaning water in water tank A, and empty water tank B; Step B, open valve A5 and close valve B5; open valve A4 and close valve B4; And / or, the self-cleaning water supply system further comprises: a dosing disinfection system connected to the pipeline between the flushing water pump and valves A2 and B2; the water supply method comprises: Step S10, executing steps C to E to clean the water tank B with clean water; Step S20, connecting the dosing disinfection system to the pipeline between the flushing water pump and the water tank B to achieve dosing disinfection of the water tank B; Step S30, disconnect the dosing disinfection system, clean the water tank B with clean water, and remove the disinfectant residue in the water tank.

8. A water supply method, characterized in that: Used to control the water age of water tank A or water tank B in the self-cleaning water supply system according to claim 4, which is executed by the automatic control module, and the water supply method includes: Step S110, detecting water flow rate; Step S118, calculate the average water age of the water tank according to the following formula: Among them, V(t) and Q(t) are the water storage and flow rate in the water tank that change with time, and T is the calculation period; Step S120, determining whether the average water age of the water tank exceeds a preset water age threshold, if yes, executing step S122; Step S122, reduce the water intake and execute step S110.

9. The water supply method according to claim 8, characterized in that: In step S118, the calculation period T is 1 hour, 30 minutes or 15 minutes; And / or, in step S120, if the average water age of the water tank does not exceed the preset water age threshold, step S124 is executed; and after step S110, the following steps are further included: Step S124, analyzing the time variation pattern of water consumption; Step S126, adjusting the water intake to match the time variation pattern of the water consumption, and executing step S110; Step S128, obtaining the minimum water consumption period within the cleaning cycle according to the water consumption variation rule, and cleaning the water tank within the minimum water consumption period, wherein the cleaning cycle is daily, weekly or monthly.

10. The water supply method according to claim 8, characterized in that: A liquid level meter is provided in the water tank; and before step S110, the following steps are further included: Step S104, receiving the water level of the water tank uploaded by the liquid level meter; Step S106, determining whether the water level in the water tank is lower than a preset water level lower limit, if yes, executing step S108; otherwise, executing step S110; Step S108, increase the water intake and execute step S104; And / or, a water outlet flow meter is provided on the water outlet pipe of the water tank, and the steps S110 and S228 further include: Step S112, determining whether the water flow rate is within a preset water flow rate range, if yes, executing step S116; otherwise, executing step S114; Step S114, adjust the water flow rate, and execute step S110; Step S116, record the current time.

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