Water purification system, water purification control method and water purification equipment

Abstract

The present application relates to a water purification system, a water purification control method and a water purification device, comprising: a pure water treatment device, a water storage device, a water outlet device and a terminal water circulation device; the water inlet end of the pure water treatment device is connected to a raw water pipeline, the water outlet end of the pure water treatment device is connected to the water storage device, the water storage device, the water storage device and the terminal water circulation device form a circulation pipeline; the pure water treatment device is used to filter raw water to obtain pure water, and transport the pure water to the water storage device; the water storage device is used to store the pure water, the water outlet device is used to output the pure water to the user side, and the terminal water circulation device is used to control the start and stop status of the control valve and the water pump under preset conditions to circulate the pure water in the circulation pipeline. The present application controls the pure water to circulate in the circulation pipeline through the terminal water circulation device, effectively avoiding water quality problems in the terminal water.

Description

Technical Field

[0001] The present application relates to the technical field of water purification equipment, and in particular to a water purification system, a water purification control method and water purification equipment. Background Art

[0002] As consumers demand more healthy and safe drinking water, water purification equipment is gaining popularity. However, after users draw water, water can remain in the water storage devices, drinking points, and pipes of water purification equipment. If left unused for a period of time, this water can breed bacteria and contaminants, causing it to stink. This creates a poor user experience and, in severe cases, can lead to drinking water hygiene and safety issues, endangering user health.

[0003] There are currently two solutions for treating the water stored at the end of water purification equipment. One is to directly drain the water, which easily results in water waste and does not meet energy conservation and environmental protection requirements. The other is to filter the water again, which increases the load on the filter element and shortens its lifespan.

[0004] Therefore, there is an urgent need for a water purification solution that can save energy and be environmentally friendly to deal with the problem of water accumulation at the end. Summary of the Invention

[0005] Based on this, it is necessary to provide a water purification system, a water purification control method and a water purification device that can efficiently handle the end water storage problem of the water purification equipment while ensuring energy saving and environmental protection in order to solve the above technical problems.

[0006] In a first aspect, the present application provides a water purification system, comprising: a pure water treatment device, a water storage device, a water outlet device, and a terminal water circulation device;

[0007] The water inlet end of the pure water treatment device is connected to the raw water pipeline, the water outlet end of the pure water treatment device is connected to the water storage device, and the water storage device, the water outlet device and the terminal water circulation device form a circulation pipeline;

[0008] The pure water treatment device is used to filter raw water to obtain pure water, and transport the pure water to the water storage device;

[0009] The water storage device is used to store the pure water, the water outlet device is used to output the pure water to the user side, and the terminal water circulation device is used to drive the pure water to circulate in the circulation pipeline under preset conditions.

[0010] In one embodiment, the water storage device includes a first water storage tank and a water pump;

[0011] The first water storage tank is connected to the pure water treatment device and the water outlet device respectively;

[0012] The first water storage tank is also connected to the terminal water circulation device through the water pump.

[0013] In one embodiment, the water storage device includes a first pressure tank and a pressure switch;

[0014] The first pressure tank is connected to the water outlet device and the terminal water circulation device respectively;

[0015] The first pressure tank is connected to the pure water treatment device through the pressure switch.

[0016] In one embodiment, the terminal water circulation device includes a first control valve, a circulating water pump, a second control valve and a second pressure tank;

[0017] One end of the first control valve and one end of the circulating water pump are both connected to the water storage device, the other end of the first control valve and the other end of the circulating water pump are both connected to one end of the second control valve, and the other end of the second control valve is connected to the water outlet device;

[0018] The second pressure tank is arranged on the pipeline between the first control valve and the second control valve.

[0019] In one embodiment, the terminal water circulation device further includes a one-way control valve;

[0020] The other end of the first control valve and the circulating water pump are both connected to the second pressure tank and one end of the second control valve via the one-way control valve.

[0021] In one embodiment, the terminal water circulation device further includes a TDS detector, wherein the TDS detector is arranged in the circulation pipeline.

[0022] In one embodiment, the water purification system includes a plurality of terminal water circulation devices, and the water storage device, the water outlet device and the terminal water circulation device form a multi-circulation pipeline.

[0023] In one embodiment, the water outlet device includes a plurality of three-way valves and water supply equipment connected in sequence;

[0024] Among them, the first end of the first three-way valve is connected to the terminal water circulation device, the first ends of the other three-way valves are connected to the second end of the previous three-way valve, and the third end of each three-way valve is connected to the corresponding water supply equipment, which is used to output the pure water to the user side. The second end of the last three-way valve is connected to the water storage device.

[0025] In one embodiment, the pure water treatment device includes a first filter element, a third control valve, a water pump, and a second filter element;

[0026] The water inlet end of the first filter element is connected to the raw water pipeline, the first water outlet end of the first filter element is connected to the water inlet of the second filter element via the third control valve and the water pump in sequence, the second water outlet end of the first filter element is connected to the water storage device, the first water outlet end of the second filter element is connected to the water inlet end of the first filter element, and the second water outlet end of the second filter element is connected to the wastewater pipeline.

[0027] In one embodiment, the pure water treatment device further includes a one-way control valve, wherein the first water outlet end of the second filter element is connected to the water inlet end of the first filter element via the one-way control valve.

[0028] In one embodiment, the pure water treatment device further includes a wastewater control valve, wherein the second water outlet end of the second filter element is connected to the wastewater pipeline via the wastewater control valve.

[0029] In a second aspect, the present application further provides a water purification control method, which is applied to the water purification system described in the first aspect, and the method comprises:

[0030] Controlling the pure water treatment device to filter raw water to obtain pure water, and transporting the pure water to the water storage device;

[0031] Obtaining the TDS value and water outage time of the pure water;

[0032] If the TDS value of the pure water or the water outage time is greater than or equal to a preset threshold, the terminal water circulation device is controlled to drive the pure water to circulate in the circulation pipeline.

[0033] In one embodiment, the control valve and the start / stop state of the water pump of the terminal water circulation device are controlled to circulate the pure water in the circulation pipeline, including:

[0034] Obtain a first pressure of the first water storage tank and a second pressure of the second water storage tank;

[0035] If the first pressure is greater than the second pressure, the first control valve is controlled to open, and the second control valve and the water pump are controlled to close;

[0036] If the first pressure is equal to the second pressure, controlling the water pump to turn on, and controlling the first control valve and the second control valve to close;

[0037] If the first pressure is lower than the second pressure, the second control valve is controlled to open, and the first control valve and the water pump are controlled to close.

[0038] In a third aspect, the present application also provides a water purification device, comprising the water purification system described in the first aspect, a memory, and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the water purification control method described in the second aspect are implemented.

[0039] In summary, the present application proposes a water purification system, a water purification control method and a water purification device, comprising: a pure water treatment device, a water storage device, a water outlet device and a terminal water circulation device; the water inlet end of the pure water treatment device is connected to the raw water pipeline, the water outlet end of the pure water treatment device is connected to the water storage device, the water storage device, the water storage device and the terminal water circulation device form a circulation pipeline; the pure water treatment device is used to filter the raw water to obtain pure water, and transport the pure water to the water storage device; the water storage device is used to store the pure water, the water outlet device is used to output the pure water to the user side, and the terminal water circulation device is used to control the start and stop status of the control valve and the water pump under preset conditions to circulate the pure water in the circulation pipeline. The present application controls the pure water to circulate in the circulation pipeline through the terminal water circulation device, effectively avoiding water quality problems in the terminal water. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a structural block diagram of a water purification system in one embodiment;

[0041] Figure 2 is a structural block diagram of a water purification system in another embodiment;

[0042] Figure 3 A structural block diagram of a water purification system in yet another embodiment;

[0043] Figure 4 is a structural block diagram of a water purification system in yet another embodiment;

[0044] Figure 5 This is a block diagram of the equipment structure of a water purification system in one embodiment;

[0045] Figure 6 Schematic diagram of a water purification control method according to an embodiment;

[0046] Figure 7 Schematic diagram of the flow of a water purification control method in another embodiment.

[0047] Summary of reference numerals:

[0048] Pure water treatment device 110; first filter element 111; third control valve 112; water pump 113; second filter element 114; one-way control valve 115; wastewater control valve 116;

[0049] Water storage device 120; first water storage tank 121; water pump 122; pressure switch 123; first pressure tank 124;

[0050] Water outlet device-130; three-way valve-131; water supply equipment-132;

[0051] Terminal water circulation device-140; first control valve-141; circulating water pump-142; second control valve-143; second pressure tank-144; one-way control valve-145. DETAILED DESCRIPTION

[0052] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0054] It will be understood that the terms "first," "second," etc., used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor without departing from the scope of this application. The first resistor and the second resistor are both resistors, but they are not the same resistor.

[0055] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if there is transmission of electrical signals or data between the connected circuits, modules, units, etc.

[0056] It is understood that “at least one” refers to one or more, “a plurality” refers to two or more, and “at least a portion of an element” refers to a portion or all of an element.

[0057] As used herein, the singular forms "a," "an," and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include," "comprising," "having," and the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Furthermore, the term "and / or" as used in this specification includes any and all combinations of the relevant listed items.

[0058] like Figure 1 As shown, the water purification system provided in the embodiment of the present application includes a pure water treatment device 110, a water storage device 120, a water outlet device 130 and a terminal water circulation device 140.

[0059] Specifically, the pure water treatment device 110 includes a water inlet, a pure water outlet, and a wastewater outlet. A filter element is provided in the pure water treatment device 110 for filtering raw water. After filtering the raw water using the filter element, pure water and wastewater are obtained. In a specific embodiment, the water inlet of the pure water treatment device 110 is connected to the raw water pipeline, the pure water outlet of the pure water treatment device 110 is connected to the pure water pipeline, and the wastewater outlet of the pure water treatment device 110 is connected to the wastewater pipeline.

[0060] In a specific embodiment, the filter element in the pure water treatment device 110 can be a single form or a combination of a pre-treatment filter element and a deep treatment filter element. Among them, the pre-treatment filter element can be used to remove mud, rust, suspended matter, colloids, residual chlorine, etc. in the water to achieve preliminary filtration of pollutants in the water body, and the pre-treatment filter element can be a combination or composite form of a primary filter element and an activated carbon filter element. For example, the primary filter element is a PP cotton filter element, an ultrafiltration filter element, etc., and the activated carbon filter element is a granular activated carbon, carbon fiber or carbon rod filter element, etc. The deep treatment filter element can be used to remove heavy metals, microorganisms, etc. in the water to achieve deep filtration of pollutants, and can be a single form or a combination of an ultrafiltration filter element, a nanofiltration filter element or a reverse osmosis filter element.

[0061] Specifically, the pure water outlet of the pure water treatment device 110 is connected to the water storage device 120 , and the water storage device 120 , the water outlet device 130 and the terminal water circulation device 140 form a circulation pipeline.

[0062] In a specific embodiment, water storage device 120 is used to store pure water. After the pure water treatment device 110 filters raw water to obtain pure water, the pure water is transported to the water storage device 120 via a power device. This allows the water storage device 120 to store a certain amount of pure water, ensuring that users can obtain pure water directly from the water purification device without being affected by the water production status of the filter element. The water storage device 120 can be a conventional purified water tank or a powered water storage device such as a pressure tank.

[0063] Water outlet device 130 is used to output pure water to the user. In actual use, when the water purification equipment generates a water outlet command, the pure water in water storage device 120 is transported to water outlet device 130 via the power equipment, so that water outlet device 130 can provide pure water to the user. Specifically, the pure water in water storage device 120 can be transported directly to water outlet device 130 via a pipeline, or it can be transported to water outlet device 130 after passing through terminal water circulation device 140. The transportation route for pure water to water outlet device 130 should be determined based on the actual application scenario.

[0064] The terminal water circulation device 140 is used to circulate pure water in the circulation pipeline by adjusting the start and stop status of the control valve and the water pump under preset conditions. In a specific embodiment, the preset conditions include but are not limited to whether the total dissolved solids value (Total Dissolved Solids, referred to as TDS value) of the water body in the circulation pipeline is greater than or equal to a preset threshold, whether the water outage time of the pure water in the water storage device 120 is greater than or equal to the preset threshold, and whether the current time falls within a preset time interval. It should be noted that the preset conditions in this embodiment can be configured accordingly according to the needs of the actual application scenario so that the TDS value of the water body in the circulation pipeline is always less than the preset threshold.

[0065] In a specific embodiment, if the TDS value of the water in the circulation pipeline is consistently below a preset threshold, and the outage time of the pure water in water storage device 120 is consistently below a preset threshold, it can be determined that the water quality in the circulation pipeline is in good condition, and the terminal water circulation device 140 does not need to be activated. At this time, if the water purification equipment generates a water discharge instruction, the power device directly drives the pure water from the water storage device 120 to the water discharge device 130 to provide pure water to the user.

[0066] If the TDS value in the water body of the circulation pipeline is greater than or equal to the preset threshold value, or the water outage time of the pure water in the water storage device 120 is greater than or equal to the preset threshold value, it can be determined that the water quality in the circulation pipeline is in a deteriorating state, and the terminal water circulation device 140 is started. At this time, the power equipment drives the pure water to be transmitted from the water storage device 120 to the terminal water circulation device 140, and then transmitted back to the water storage device through the terminal water circulation device 140 and the water outlet device 130 in sequence, so as to realize the water circulation of pure water in the circulation pipeline. At this time, if the water purification equipment generates a water outlet instruction, it is necessary to first detect the TDS value in the water body of the circulation pipeline. When the TDS value in the water body is less than the preset threshold value, the power equipment drives the pure water to be transmitted through the water storage device 120 and the terminal water circulation device 140 to the water outlet device 130, so as to provide pure water to the user side.

[0067] It should be noted that in this embodiment, when setting the water outage time or preset time interval for pure water, it is necessary to ensure that the water in the circulation pipeline does not become stagnant in a short period of time, breeding bacteria and affecting the user's drinking water health. This embodiment does not limit the water outage time or preset time interval, and appropriate time values ​​can be configured according to the needs of actual application scenarios.

[0068] Specifically, the switching status of the control valves and the start and stop status of the water pumps of the various devices provided in this embodiment are all controlled by the program of the controller of the water purification system. The corresponding programs are configured in advance in the water purification system to control each device to realize water production, flushing, terminal water circulation, peak water storage and other functions.

[0069] In summary, this embodiment provides a water purification system, which forms a circulation pipeline between the water storage device and the water outlet device by setting a terminal water circulation device. When the pure water in the circulation pipeline meets the preset circulation conditions, the processor of the water purification system adjusts the switch state of the control valve of the terminal water circulation device and the start and stop state of the water pump to realize the circulation of pure water in the circulation pipeline, thereby avoiding the dead water treatment at the end of the water purification equipment, which affects the healthy drinking water of the user. By adding a terminal water circulation device, this embodiment makes it unnecessary for the water body at the end of the water purification equipment to repeatedly pass through the pure water treatment device, and will not cause excessive loss to the filter element in the pure water treatment device, effectively extending the service life of the filter element in the water purification equipment. In addition, the water purification system in this embodiment does not need to discharge the water body in the terminal pipeline of the water purification equipment multiple times, which effectively avoids the waste of water resources and is more ecological and environmentally friendly.

[0070] In one embodiment, Figure 2 As shown, the water storage device 120 includes a first water storage barrel 121 and a water pump 122; the first water storage barrel 121 is connected to the pure water treatment device 110 and the water outlet device 130 respectively; the first water storage barrel 121 is also connected to the terminal water circulation device 140 through the water pump 122.

[0071] In a specific embodiment, the water storage device may comprise a first water storage tank 121 and a water pump 122. First water storage tank 121 may be a standard clean water tank, and water pump 122 may be a pump, booster pump, or pressure-stabilizing pump, etc., for providing a driving force for the water. In a specific embodiment, the booster pump may increase the water pressure to regulate the pressure in the circulation pipeline, thereby controlling the water flow in a specified direction within the circulation pipeline.

[0072] Specifically, the water inlet end of the first water storage barrel 121 is connected to the water outlet end of the pure water treatment device 110, the water outlet end of the first water storage barrel 121 is connected to the water outlet device 130, and the water outlet end of the first water storage barrel 121 is also connected to the terminal water circulation device 140 through the water pump 122.

[0073] In one embodiment, Figure 3As shown, the water storage device 120 includes a first pressure barrel 124 and a pressure switch 123; the first pressure barrel 124 is connected to the water outlet device 130 and the terminal water circulation device 140 respectively; the first pressure barrel 124 is connected to the pure water treatment device 110 through the pressure switch 123.

[0074] In a specific embodiment, the water storage device can also be composed of a first pressure barrel 124 and a pressure switch 123. Since the first pressure barrel 124 is a pressure barrel, it has a certain driving force and can directly provide driving force for water, so that pure water can be transmitted in the circulation pipeline in a specified direction.

[0075] The pressure switch 123 is used to open and close according to the detected pressure value. In actual application, the pressure switch 123 is turned on when the pressure value is greater than or equal to a preset threshold. At this time, the pure water treatment device 110 has already processed a certain amount of pure water in the pipeline between the pure water treatment device 110 and the water storage device 120. The pressure switch 123 is turned on so that the pure water processed by the pure water treatment device 110 can be transported to the first pressure barrel 124 in a specified direction. The pressure switch 123 is turned off when the pressure value is less than the preset threshold. At this time, there is less pure water in the pipeline between the pure water treatment device 110 and the water storage device 120. The pressure switch 123 is turned off to prevent the pure water treatment device 110 from transmitting a large flow of pure water to the first pressure barrel 124 in a short period of time.

[0076] In a specific embodiment, the pressure switch 123 can also effectively prevent the water in the first pressure tank 124 from flowing back to the pure water treatment device 110 .

[0077] Specifically, this embodiment directly uses the first pressure tank 124 in the water storage device 120, which can effectively reduce the number of water pumps used in the water purification system, thereby reducing the power loss of the water purification equipment and the complexity of program control.

[0078] In one embodiment, Figure 4 As shown, the terminal water circulation device 140 includes a first control valve 141, a circulating water pump 142, a second control valve 143 and a second pressure tank 144;

[0079] One end of the first control valve 141 and one end of the circulating water pump 142 are connected to the water storage device 120, the other end of the first control valve 141 and the other end of the circulating water pump 142 are connected to one end of the second control valve 143, and the other end of the second control valve 143 is connected to the water outlet device 130;

[0080] The second pressure tank 144 is provided on the pipeline between the first control valve 141 and the second control valve 143 .

[0081] Specifically, when each device in the terminal water circulation device 140 is in the startup state, it switches between the start and stop states according to a fixed circulation logic.

[0082] In a specific embodiment, when the pure water prepared by the pure water treatment device 110 is transported to the water storage device 120, the pressure of the first pressure barrel 124 in the water storage device 120 will be greater than the pressure of the second pressure barrel 144. At this time, the first control valve 141 is first controlled to open, and the circulating water pump 142 and the second control valve 143 are controlled to close, so that the first pressure barrel 124 provides driving force to transfer pure water from the first pressure barrel 124 to the second pressure barrel 144.

[0083] When the pressure in the first pressure barrel 124 is equal to the pressure in the second pressure barrel 124 , the first control valve 141 and the second control valve 142 are controlled to close, and the circulating water pump 142 is controlled to start, and the pure water continues to be pumped from the first pressure barrel 124 to the second pressure barrel 144 , so that the pure water in the first pressure barrel 124 can circulate completely.

[0084] When the circulating water pump 142 is started for a period of time and the pressure of the first pressure barrel 124 is lower than the pressure of the second pressure barrel 144, the circulating water pump 142 and the first control valve 141 are controlled to be closed, and the second control valve 142 is controlled to be opened, so that the second pressure barrel 144 provides driving force, so that pure water is transmitted from the second pressure barrel 144 to the first pressure barrel 124 via the water outlet device 130.

[0085] It should be noted that when the water purification system does not receive a water outlet instruction, the water outlet device 130 always keeps the pipeline between the terminal water circulation device 140 and the water storage device 120 in an unobstructed state.

[0086] This embodiment, by providing a first control valve 141, a circulating water pump 142, a second control valve 143, and a second pressure tank 144, in conjunction with the first pressure tank 124 in the water storage device 120, allows pure water to circulate in the circulating pipe at the end of the water purification device, thereby effectively preventing the problem of stagnant water at the water outlet of the water purification device and ensuring the health of drinking water for users. Furthermore, this embodiment does not require the water to be discharged from the end of the water purification device, thus avoiding water waste and being more energy-efficient and environmentally friendly.

[0087] In one embodiment, Figure 5 As shown, the terminal water circulation device 140 also includes a one-way control valve 145; the other end of the first control valve 141 and the circulating water pump 142 are connected to the second pressure tank 144 and one end of the second control valve 143 via the one-way control valve 145.

[0088] Specifically, this embodiment provides a one-way control valve between the first control valve 141 and the second control valve 143 to ensure that pure water is transmitted in a specified direction, thereby effectively preventing the backflow of water.

[0089] In a specific embodiment, the provision of the one-way control valve 145 can effectively ensure that the pure water stored in the second pressure barrel 144 can be stably transmitted to the water storage device 120 along the water outlet device 130 .

[0090] In one embodiment, the terminal water circulation device 140 further includes a TDS detector, wherein the TDS detector is disposed in the circulation pipeline.

[0091] In a specific embodiment, the terminal water circulation device 140 is further provided with a TDS value detector. The TDS detector is disposed in the circulation pipeline to detect the TDS value of the water in the circulation pipeline. It should be noted that this embodiment does not limit the type of TDS detector, and a corresponding detector can be configured according to the needs of the actual application scenario.

[0092] Optionally, the TDS detector in this embodiment is a TDS probe.

[0093] In one embodiment, the TDS detector of this embodiment is disposed in a portion of the pipe of the water outlet device 130 , thereby being able to detect the TDS value at a more precise location and prevent the TDS value of the water on the user side from exceeding the standard.

[0094] In one embodiment, the water purification system includes a plurality of terminal water circulation devices 140 , and the water storage device 120 , the water outlet device 130 and the terminal water circulation device 140 form a multi-circulation pipeline.

[0095] Specifically, the water pipeline connection provided in this embodiment can be in series, parallel or series-parallel form, and the water pipeline can be set according to the needs of the actual application scenario.

[0096] In this embodiment, multiple terminal water circulation devices can be configured to achieve multi-pipeline circulation of water, while ensuring that multiple second pressure barrels are configured in the water purification system to store more pure water, so as to provide users with more immediately available pure water during peak periods.

[0097] It should be noted that the aforementioned function of increasing the water storage capacity can also be achieved by configuring multiple second pressure tanks in a terminal water circulation device, or configuring multiple first pressure tanks in a water storage device.

[0098] In one embodiment, the water purification system only needs to store more pure water at the end of the equipment during peak periods. When the water purification system has multiple second pressure tanks or multiple end water circulation devices, a certain number of second pressure tanks or a certain number of end water circulation devices can be activated according to the pre-set peak period time.

[0099] For example, if the terminal water circulation device is equipped with two second pressure tanks, when the current time is not a preset peak time, only the first pressure tank is used to circulate and store pure water. When the current time is a preset peak time, both second pressure tanks are used to circulate and store pure water.

[0100] In one embodiment, the water outlet device 130 includes a plurality of three-way valves 131 and water supply equipment 132 connected in sequence;

[0101] Among them, the first end 1 of the first three-way valve 131 is connected to the terminal water circulation device 140, the first ends 1 of the other three-way valves 131 are connected to the second end 2 of the previous three-way valve 131, and the third end 3 of each three-way valve 131 is connected to the corresponding water supply equipment 132, which is used to output pure water to the user side. The second end 2 of the last three-way valve 131 is connected to the water storage device 120.

[0102] Specifically, the water supply equipment 132 may be a pipeline machine or a water dispenser or other equipment that supplies water to users.

[0103] Each end of the three-way valve 131 in this embodiment can be opened and closed according to the control state of the water purification system.

[0104] When the water purification system is in a state where the terminal water circulation device 140 is not turned on, if the water purification system generates a water outlet instruction, pure water will be transmitted to the water supply equipment 132 through the second end 2 and the third end 3 of each three-way valve, so that the water supply equipment 132 can provide pure water to the user.

[0105] When the water purification system is in the state of opening the terminal water circulation device 140, if the water purification system does not generate a water output instruction, the pure water will be transferred to the water storage device 120 through the first end 1 and the second end 2 of the three-way valve.

[0106] When the water purification system is in the state of opening the terminal water circulation device 140, if the water purification system generates a water outlet instruction, pure water will be transmitted to the water supply equipment 132 through the first end 1 and the third end 3 of the three-way valve, so that the water supply equipment 132 can provide pure water to the user.

[0107] When the water purification system is in the peak water supply state, if the water purification system generates a water outlet instruction, an additional second pressure tank is required to provide pure water to the water outlet equipment. The pure water will be transmitted to the water supply equipment 132 through the first end 1 and the third end 3 of the three-way valve, so that the water supply equipment 132 can provide pure water to the user.

[0108] In one embodiment, Figure 5 As shown, the pure water treatment device 110 includes a first filter element 111, a third control valve 112, a water pump 113 and a second filter element 114;

[0109] The water inlet end of the first filter element 111 is connected to the raw water pipeline, the first water outlet end of the first filter element 111 is connected to the water inlet of the second filter element 114 via the third control valve 112 and the water pump 113 in sequence, the second water outlet end of the first filter element 111 is connected to the water storage device 120, the first water outlet end of the second filter element 111 is connected to the water inlet end of the first filter element 111, and the second water outlet end of the second filter element 114 is connected to the wastewater pipeline.

[0110] Specifically, the first filter element 111 in this embodiment can adopt a composite filter element (PCB filter element) composed of a pre-treatment filter element (PP cotton filter element) and a post-treatment filter element (carbon rod filter element), and the second filter element 114 adopts an RO membrane filter element.

[0111] When the raw water is transmitted to the water inlet end of the pure water treatment device, that is, the water inlet end of the first filter element, through the raw water pipeline, the raw water is first filtered by the pre-treatment filter element of the first filter element, then filtered by the RO membrane filter element of the second filter element, and finally filtered by the post-treatment filter element of the first filter element to complete the water quality treatment of the raw water and obtain pure water.

[0112] Specifically, the filter element may be a composite filter element or other combination of multiple filter elements. For example, the first filter element may be a composite filter element, or a pre-treatment filter element and a post-treatment filter element may be separate. It should be noted that the specific materials of the first and second filter elements in this embodiment can be adaptively configured according to the needs of the actual application scenario and are not intended to be exclusive here.

[0113] Specifically, the water pump 113 in this embodiment is a booster water pump or a pressure-stabilizing water pump.

[0114] After pre-treatment by the PP cotton filter element in the front portion of the first filter element (PCB filter element), the raw water enters the second filter element (RO membrane filter element) after being pressurized by the third control valve 112 and water pump 113. The second filter element has two outlets: a first outlet (pure water outlet) and a second outlet (concentrated water outlet). Concentrated water is discharged through the wastewater pipeline, and pure water enters the carbon rod filter element in the rear portion of the first filter element for post-treatment.

[0115] The first filter element has a first water outlet (pre-processed pure water outlet) and a second water outlet (post-processed pure water outlet). The pure water obtained by post-processing of the first filter element is transmitted to the water storage device 120 for storage and subsequent pure water supply treatment or pure water circulation treatment.

[0116] In one embodiment, Figure 5 As shown, the pure water treatment device 110 further includes a one-way control valve 115 , wherein the first water outlet end of the second filter element 114 is connected to the water inlet end of the first filter element 111 via the one-way control valve 115 .

[0117] Specifically, in this embodiment, a one-way control valve 115 is set between the first water outlet end of the second filter element 114 and the water inlet end of the first filter element 111, which can effectively prevent the water at the water inlet end of the first filter element 111 from flowing back to the first water outlet end of the second filter element 114.

[0118] In one embodiment, Figure 5 As shown, the pure water treatment device 110 further includes a wastewater control valve 116 , wherein the second water outlet end of the second filter element 114 is connected to the wastewater pipeline via the wastewater control valve 116 .

[0119] Specifically, the wastewater control valve 116 in this embodiment has two states: operation and flushing, and is used to discharge concentrated water produced by the second filter element or to discharge sewage used for cleaning the filter element.

[0120] In summary, this embodiment provides a water purification system, which forms a circulation pipeline between the water storage device and the water outlet device by setting a terminal water circulation device. When the pure water in the circulation pipeline meets the preset circulation conditions, the processor of the water purification system adjusts the switch state of the control valve of the terminal water circulation device and the start and stop state of the water pump to realize the circulation of pure water in the circulation pipeline, thereby avoiding the dead water treatment at the end of the water purification equipment, which affects the healthy drinking water of the user. This embodiment adds a terminal water circulation device, so that the water body at the end of the water purification equipment does not need to repeatedly pass through the pure water treatment device, and will not cause excessive loss to the filter element in the pure water treatment device, effectively extending the service life of the filter element in the water purification equipment. In addition, the water purification system in this embodiment does not need to discharge the water body in the terminal pipeline of the water purification equipment multiple times, which effectively avoids the waste of water resources and is more ecological and environmentally friendly.

[0121] In one embodiment, Figure 6 As shown, a water purification control method is provided, which is applied to Figure 1 The water purification system in the example is used to illustrate, which includes the following steps:

[0122] Step 602: Control the pure water treatment device to filter the raw water to obtain pure water, and then deliver the pure water to the water storage device.

[0123] Step 604: Obtain the TDS value of pure water and the water outage time.

[0124] Step 606: If the TDS value of the pure water or the water outage time is greater than or equal to the preset threshold, the terminal water circulation device is controlled to drive the pure water to circulate in the circulation pipeline.

[0125] Specifically, the specific implementation of each step in this embodiment can refer to the specific implementation of the aforementioned system embodiment, and will not be described in detail here.

[0126] In a specific embodiment, this embodiment obtains the TDS value of pure water in the circulation pipeline and the water outage time of the water storage device, and controls the start and stop status of the control valve and the water pump in the terminal water circulation device based on the comparison result of the TDS value with the preset threshold, and the comparison result of the water outage time with the preset threshold, so as to realize the circulation flow of water in the circulation pipeline.

[0127] In one embodiment, Figure 7 As shown, step 606 includes:

[0128] Step 702: Obtain a first pressure of the first water storage tank and a second pressure of the second water storage tank.

[0129] Step 704: If the first pressure is greater than the second pressure, the first control valve is controlled to open, and the second control valve and the water pump are controlled to close.

[0130] Step 706: If the first pressure is equal to the second pressure, control the water pump to start, and control the first control valve and the second control valve to close.

[0131] Step 708: If the first pressure is less than the second pressure, the second control valve is controlled to open, and the first control valve and the water pump are controlled to close.

[0132] It should be understood that, although the steps in the flowcharts of the above embodiments are shown in sequence as indicated by the arrows, these steps are not necessarily performed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be performed in other orders. Moreover, at least a portion of the steps in the flowcharts of the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily performed at the same time, but can be performed at different times. The execution order of these steps or stages is not necessarily to be performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0133] Based on the same inventive concept, the present application also provides a water purification control device for implementing the aforementioned water purification control method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more water purification control device embodiments provided below can be found in the above-mentioned limitations of the water purification control method and will not be repeated here.

[0134] In one embodiment, this embodiment further provides a water purification control device, comprising: a filtration control module, a parameter acquisition module and a circulation control module, wherein:

[0135] The filtration control module is used to control the pure water treatment device to filter raw water, obtain pure water, and transport the pure water to the water storage device.

[0136] The parameter acquisition module is used to obtain the TDS value of pure water and the water outage time.

[0137] The circulation control module is used to control the terminal water circulation device to drive the pure water to circulate in the circulation pipeline if the TDS value of the pure water or the water outage time is greater than or equal to a preset threshold.

[0138] In one embodiment, the circulation control module is specifically used to obtain a first pressure of the first water storage tank and a second pressure of the second water storage tank; if the first pressure is greater than the second pressure, the first control valve is controlled to open, and the second control valve and the water pump are controlled to close; if the first pressure is equal to the second pressure, the water pump is controlled to open, and the first control valve and the second control valve are controlled to close; if the first pressure is less than the second pressure, the first control valve and the second control valve are controlled to open, and the water pump is controlled to close.

[0139] Each module in the above-mentioned water purification control device can be implemented in whole or in part through software, hardware, or a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor in the water purification device in hardware form, or can be stored in the memory of the water purification device in software form, so that the processor can call and execute the corresponding operations of each of the above modules.

[0140] In addition, this embodiment also provides a water purification device, including the water purification system in the aforementioned system embodiment, a memory and a processor, the memory stores a computer program, and when the processor executes the computer program, it implements the steps of the water purification control method in the aforementioned method embodiment.

[0141] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0142] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A water purification system, characterized in that: include: Pure water treatment device, water storage device, water outlet device and terminal water circulation device; The water inlet end of the pure water treatment device is connected to the raw water pipeline, the water outlet end of the pure water treatment device is connected to the water storage device, and the water storage device, the water outlet device and the terminal water circulation device form a circulation pipeline; The pure water treatment device is used to filter raw water to obtain pure water, and transport the pure water to the water storage device; The water storage device is used to store the pure water, the water outlet device is used to output the pure water to the user side, and the terminal water circulation device is used to drive the pure water to circulate in the circulation pipeline under preset conditions; The water storage device includes a first pressure barrel and a pressure switch; The first pressure tank is connected to the water outlet device and the terminal water circulation device respectively; The first pressure tank is connected to the pure water treatment device via the pressure switch; The terminal water circulation device includes a first control valve, a circulating water pump, a second control valve and a second pressure tank; One end of the first control valve and one end of the circulating water pump are both connected to the water storage device, the other end of the first control valve and the other end of the circulating water pump are both connected to one end of the second control valve, and the other end of the second control valve is connected to the water outlet device; The second pressure tank is arranged on the pipeline between the first control valve and the second control valve.

2. The system according to claim 1, wherein: The terminal water circulation device also includes a one-way control valve; The other end of the first control valve and the circulating water pump are both connected to the second pressure tank and one end of the second control valve via the one-way control valve.

3. The system according to claim 1, wherein: The terminal water circulation device further includes a TDS detector, wherein the TDS detector is arranged in the circulation pipeline.

4. The system according to any one of claims 1 to 3, characterized in that: The water purification system includes a plurality of terminal water circulation devices, and the water storage device, the water outlet device and the terminal water circulation device form a multi-circulation pipeline.

5. The system according to claim 1, wherein: The water outlet device includes a plurality of three-way valves and water supply equipment connected in sequence; Among them, the first end of the first three-way valve is connected to the terminal water circulation device, the first ends of the other three-way valves are connected to the second end of the previous three-way valve, and the third end of each three-way valve is connected to the corresponding water supply equipment, which is used to output the pure water to the user side. The second end of the last three-way valve is connected to the water storage device.

6. The system according to claim 1, wherein: The pure water treatment device includes a first filter element, a third control valve, a water pump and a second filter element; The water inlet end of the first filter element is connected to the raw water pipeline, the first water outlet end of the first filter element is connected to the water inlet of the second filter element via the third control valve and the water pump in sequence, the second water outlet end of the first filter element is connected to the water storage device, the first water outlet end of the second filter element is connected to the water inlet end of the first filter element, and the second water outlet end of the second filter element is connected to the wastewater pipeline.

7. The system according to claim 6, characterized in that The pure water treatment device further includes a one-way control valve, wherein the first water outlet end of the second filter element is connected to the water inlet end of the first filter element via the one-way control valve.

8. The system according to claim 6, wherein: The pure water treatment device further includes a wastewater control valve, wherein the second water outlet end of the second filter element is connected to the wastewater pipeline via the wastewater control valve.

9. A water purification control method, characterized in that: Applied to the water purification system according to any one of claims 1 to 8, the method comprising: Controlling the pure water treatment device to filter raw water to obtain pure water, and transporting the pure water to the water storage device; Obtaining the TDS value and water outage time of the pure water; If the TDS value of the pure water or the water outage time is greater than or equal to a preset threshold, the terminal water circulation device is controlled to drive the pure water to circulate in the circulation pipeline.

10. The method according to claim 9, characterized in that The control valve and the start / stop state of the water pump of the control terminal water circulation device are controlled to make the pure water circulate in the circulation pipeline, including: Obtain a first pressure of the first pressure tank and a second pressure of the second pressure tank; If the first pressure is greater than the second pressure, the first control valve is controlled to open, and the second control valve and the water pump are controlled to close; If the first pressure is equal to the second pressure, controlling the water pump to turn on, and controlling the first control valve and the second control valve to close; If the first pressure is lower than the second pressure, the second control valve is controlled to open, and the first control valve and the water pump are controlled to close.

11. A water purification device, characterized in that: The method comprises the water purification system according to any one of claims 1 to 8, a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the water purification control method according to any one of claims 9 or 10 when executing the computer program.

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