Water purification system

Abstract

The application discloses a water purification system, comprising: a reverse osmosis filter core, a raw water pipeline, a first water storage container, a pure water pipeline, a concentrated water pipeline, a second water storage container and a second water taking switch; the cooperation of the second control valve, the backwater pipeline, the first water storage container, the second water storage container and other components solves the problem of high concentration of the first cup of water, and the concentrated water is backflowed, so that water resource waste caused by direct discharge of the concentrated water is reduced; while recycling the first cup of water, the second water storage container is used to provide pure water for users, or the stored water of the second water storage container is used to dilute the concentration of the first cup of water, and the process does not affect the use of pure water by the users; the system does not need to automatically process the first cup of water every certain time, but only needs to process the first cup of water when the users use pure water.

Description

Technical Field

[0001] The present invention relates to water purification equipment, in particular to a water purification system. Background Art

[0002] After a reverse osmosis filter has been conditioned for a period of time, the concentrated water from the concentrate side of the filter will permeate into the pure water on the pure water side, causing the TDS value of the pure water to increase. When a user consumes pure water, the TDS value of the "first glass of water" is high, which affects water safety. Some existing water purification systems periodically circulate this "first glass of water" within the system for treatment or discharge. Furthermore, these systems directly discharge the concentrated water produced by the reverse osmosis filter during use, which is undoubtedly a waste of water resources. Summary of the Invention

[0003] The present invention aims to solve at least one of the above-mentioned technical problems in the related art to a certain extent. To this end, the present invention provides a water purification system.

[0004] To achieve the above object, the technical solution of the present invention is as follows:

[0005] A water purification system according to a first embodiment of the present invention includes:

[0006] Reverse osmosis filter element, with raw water end, pure water end and concentrated water end;

[0007] a raw water pipeline connected to the raw water end, wherein the raw water pipeline is provided with a first control valve and a first pressure boosting device;

[0008] A first water storage container is connected to a water source, and the first water storage container is in communication with the raw water pipeline;

[0009] A pure water pipeline is connected to the pure water end, and a first water intake switch is provided at the tail end of the pure water pipeline;

[0010] a concentrated water pipeline connected to the concentrated water end, and the concentrated water pipeline is in communication with the first water storage container;

[0011] a second water storage container, wherein water can flow controllably between the second water storage container and the pure water pipeline;

[0012] The second water intake switch is connected to the first water storage container.

[0013] According to the embodiment of the present invention, the water purification system has at least the following beneficial effects: the cooperation of components such as the second control valve, the return water pipeline, the first water storage container, and the second water storage container solves the problem of high concentration of the "first cup of water", and the concentrated water is returned to reduce the waste of water resources caused by direct discharge of concentrated water. While recycling the "first cup of water", the second water storage container is used to provide pure water to the user, or the water stored in the second water storage container is used to dilute the concentration of the first cup of water. The process does not affect the user's use of pure water. The system does not need to automatically process the "first cup of water" at regular intervals, and only needs to process it when the user uses pure water.

[0014] According to some embodiments of the present invention, the second water storage container has a pressure water storage chamber with a variable volume, and the pressure water storage chamber is connected to the pure water pipeline through a water pipeline.

[0015] According to some embodiments of the present invention, the second water storage container has a pure water chamber, and the pure water chamber is connected to the pure water pipeline through a water flow pipeline. A third one-way valve and a second boosting device are provided in parallel on the water flow pipeline. The water flowing through the third one-way valve flows unidirectionally from the pure water pipeline to the pure water chamber, and the second boosting device draws the water in the pure water chamber toward the pure water pipeline.

[0016] According to some embodiments of the present invention, a return water pipeline is further included, a second control valve is provided on the pure water pipeline, one end of the return water pipeline is connected to the pure water pipeline and connected to the upstream side of the second control valve, and the other end is connected to the first water storage container, a third control valve is provided on the return water pipeline, and the second water storage container is connected to the pure water pipeline and connected to the downstream side of the second control valve.

[0017] According to some embodiments of the present invention, the first water storage container is connected to a confluence pipeline, and the concentrated water pipeline and the return water pipeline are connected to the confluence pipeline.

[0018] According to some embodiments of the present invention, a water quality detection device for detecting the water in the first water storage container is further provided. The first water storage container is connected to a drainage pipeline, and a fourth control valve is provided on the drainage pipeline.

[0019] According to some embodiments of the present invention, a first flow detection device is provided at the return water end of the first water storage container, and the first flow detection device is used to detect the amount of concentrated water flowing back into the first water storage container.

[0020] According to some embodiments of the present invention, the first water storage container and the second water storage container are integrated into a water storage device.

[0021] According to some embodiments of the present invention, a first one-way valve and a wastewater valve are provided on the concentrated water pipeline. The first one-way valve controls the one-way flow of water on the raw water pipeline toward the first water storage container, and the wastewater valve controls the water flow rate on the concentrated water pipeline.

[0022] According to some embodiments of the present invention, a second one-way valve and a pressure detection device are provided on the pure water pipeline, the second one-way valve is arranged adjacent to the pure water end, and the pressure detection device is arranged adjacent to the first water intake switch.

[0023] According to some embodiments of the present invention, a second flow detection device is provided on the pure water pipeline, and the second flow detection device is located downstream of the connection point between the second water storage container and the pure water pipeline.

[0024] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0026] Figure 1 This is a schematic diagram of one embodiment of the present invention

[0027] Figure 2 is a schematic diagram of a second embodiment of the present invention;

[0028] Figure 3 is a schematic diagram of a third embodiment of the present invention;

[0029] Figure 4 It is a schematic diagram of a fourth embodiment of the present invention.

[0030] Reference numerals:

[0031] Reverse osmosis filter element 100; raw water end 101; pure water end 102; concentrated water end 103;

[0032] Raw water pipeline 200; first control valve 201; first boosting device 202; composite filter element 203;

[0033] First water storage container 300; pressure reducing valve 301; tap water pipe 302; confluence pipe 303; water quality detection device 304; drainage pipe 305; fourth control valve 306; first flow detection device 307;

[0034] Pure water pipeline 400; second control valve 401; first water intake switch 402; second one-way valve 403; pressure detection device 404; second flow detection device 405; post-carbon filter element 406;

[0035] Concentrated water pipeline 500; second water intake switch 501; first one-way valve 502; waste water valve 503;

[0036] Return water pipeline 600; third control valve 601;

[0037] A second water storage container 700 ; a pressure water storage chamber 701 ; a pure water chamber 702 ; and a water pipe 710 . DETAILED DESCRIPTION

[0038] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0039] The present invention provides a water purification system, comprising a reverse osmosis filter element 100, a raw water pipeline 200, a pure water pipeline 400, a concentrated water pipeline 500, a return water pipeline 600, a first water storage container 300 and a second water storage container 700.

[0040] like Figure 2 As shown, the reverse osmosis filter element 100 is provided with a raw water end 101, a pure water end 102 and a concentrated water end 103. A first control valve 201 and a first boosting device 202 are provided on the raw water pipeline 200. The first control valve 201 can be a solenoid valve, and the first boosting device 202 can be a water pump. The first control valve 201 is used to control the water flow of the raw water pipeline 200. The first water storage container 300 is connected to a water source such as tap water or other water supply system. When the first water storage container 300 is connected to the tap water pipe 302, it is preferred to install a pressure reducing valve 301 on the tap water pipe 302. The tail end of the raw water pipeline 200 is connected to the raw water end 101 of the reverse osmosis filter element 100, and the head end can be directly connected to the first water storage container 300 (such as Figure 2 ), the head end of the raw water pipeline 200 can also be connected to the tap water pipe 302 of the water source (such as Figure 4 ), the raw water pipeline 200 is connected to the first water storage container 300 via the tap water pipe 302. One end of the concentrated water pipeline 500 is connected to the concentrated water port 103 of the reverse osmosis filter element 100, and the other end is connected to the first water storage container 300. The pure water pipeline 400 is connected to the pure water port 102 of the reverse osmosis filter element 100. The tail end of the pure water pipeline 400 is connected to a first water dispensing switch 402. The first water dispensing switch 402 can be a faucet or a water dispensing switch connected to an external water device.

[0041] The second water storage container 700 is connected to the pure water pipeline 400, and the water flow between the second water storage container 700 and the pure water pipeline 400 can be controlled, that is, the water in the pure water pipeline 400 can flow into the second water storage container 700, and the water in the second water storage container 700 can also be controlled to flow toward the pure water pipeline 400. In this embodiment, Figure 1 As shown, a variable-volume pressure water storage chamber 701 can be provided in the second water storage container 700, and the pressure water storage chamber 701 is connected to the pure water pipeline 400 via a water pipe 710. The pressure water storage chamber 701 can be composed of an elastic water bag, which can expand and contract according to the increase or decrease of the water volume by utilizing the elastic effect of the elastic water bag; the second water storage container 700 can use a sealed shell, and the pressure water storage chamber 701 is located inside the shell. The space between the inner wall of the shell and the pressure water storage chamber 701 can be filled with gas or liquid, and the pressure water storage chamber 701 can be squeezed by air pressure or hydraulic pressure. It can also be, for example Figure 4 As shown, the second water storage container 700 is provided with a pure water chamber 702 of constant volume. The pure water chamber 702 is connected to the pure water pipeline 400 via a water passage 710. A third one-way valve 711 and a second boosting device 712 are provided in parallel on the water passage 710. The second boosting device 712 can be a boosting pump. Water flowing through the third one-way valve 711 flows unidirectionally from the pure water pipeline 400 to the pure water chamber 702. The second boosting device 712 pumps the water in the pure water chamber 702 toward the pure water pipeline 400. Under the two structures of the second water storage container 700 described above, as Figure 2 and Figure 4 As shown, a second control valve 401 can be provided on the pure water pipeline 400. A solenoid valve can be used for the second control valve 401. A return water pipeline 600 is connected to the pure water pipeline 400 at one end and communicates with the first water storage container 300 at the other end. The connection point between the return water pipeline 600 and the pure water pipeline 400 is located upstream of the second control valve 401. A third control valve 601 is provided on the return water pipeline 600. The third control valve 601 can be a solenoid valve or a pressure relief valve. The second water storage container is connected to the pure water pipeline 400 with the connection point located downstream of the second control valve 401. A second water inlet switch 501 is connected to the first water storage container 300. The second water inlet switch 501 can be a faucet or other external water supply device.

[0042] This water purification system includes the following working modes (with Figure 2 Implementation method is described):

[0043] First normal water production mode: When a user needs pure water, they open the first water dispensing switch 402. At this point, the first control valve 201, the first boosting device 202, and the second control valve 401 are open, the third control valve 601 is closed, and the second water dispensing switch 501 is also closed. Under the pressure of the first boosting device 202, water in the first water storage container 300 flows through the raw water pipeline 200 and the raw water port 101 and enters the reverse osmosis filter element 100. After filtration, the water is converted into concentrated water and pure water. The concentrated water is discharged from the concentrated water port 103 and returned to the first water storage container 300 through the concentrated water pipeline 500. Tap water automatically replenishes the water in the first water storage container 300, and the tap water and concentrated water are mixed in the first water storage container 300. The pure water is discharged through the pure water port 102 into the pure water pipeline 400 and then discharged from the first water dispensing switch 402 for user use.

[0044] Water storage mode: When the first water intake switch 402 changes from an open state to a closed state, the first control valve 201, the first boosting device 202, and the second control valve 401 remain open, the third control valve 601 is closed, and the second water intake switch 501 remains closed. The system continues to produce water, and the produced pure water enters the pressure water storage chamber 701 of the second water storage container 700 through the pure water pipeline 400 for storage. The pressure water storage chamber 701 expands as the amount of water stored increases. After a certain period of time, the first control valve 201, the first boosting device 202, and the second control valve 401 are closed, and the system enters a standby state. The pressure water storage chamber 701 remains in an expanded state.

[0045] During the Nth (N>1) normal water production mode, when the first water inlet switch 402 switches from closed to open, for an initial period, the first control valve 201, the third control valve 601, and the first pressurizing device 202 are open, the second control valve 401 is closed, and the second water inlet switch 501 is also closed. While the first water inlet switch 402 is open, the pressure in the pressure storage chamber 701 is released and contracts, allowing the stored pure water to flow into the pure water pipeline 400 and then be discharged from the first water inlet switch 402 for user use. Simultaneously, the pure water produced by the reverse osmosis filter element 100 enters the first water storage container 300 through the return water pipeline 600. This effectively processes the water with a higher TDS value (the first cup of water) at the pure water end 102 of the reverse osmosis filter element 100 and recycles it into the first water storage container 300. After a certain period of time, the second control valve 401 is opened, the third control valve 601 is closed, and the pure water produced by the reverse osmosis filter element 100 is discharged through the pure water pipeline 400 and the first water intake switch 402 for use by the user.

[0046] When the first water intake switch 402 is closed, the system enters the water storage mode, thereby cycling between the water storage mode and the Nth normal water production mode.

[0047] In concentrated water dispensing mode, the second water dispensing switch 501 is turned on, and the water in the second water storage container 700 is discharged through the second water dispensing switch 501 for the user to use as tap water, concentrated water, or mixed water. In this mode, the user can directly use the concentrated water, while also replenishing the first water storage container 300 with tap water during the concentrated water dispensing process, reducing the TDS value of the concentrated water.

[0048] When Figure 1 In the illustrated system structure, when the first water dispensing switch 402 is closed, the system produces water, and the produced pure water enters the second water storage container 700 through the pure water pipeline 400 for storage. When the first water dispensing switch 402 is opened, the pure water stored in the second water storage container 700 flows into the pure water pipeline 400, where it mixes with the water in the "first cup of water", thereby diluting the TDS value of the "first cup of water" to meet drinking water requirements.

[0049] exist Figure 1 or Figure 2 Based on the system structure Figure 4 The structure of the second water storage container 700 shown in the figure is that the water in the pure water pipeline 400 can flow into the second water storage container 700 in one direction through the third one-way valve 711 of the water pipe 710 and be stored until it is full of water; when the first water intake switch 402 is turned on and the second water storage container 700 is needed to supply water to the pure water pipeline 400, the second boosting device 712 is turned on to pump the water in the second water storage container 700 into the pure water pipeline 400 to achieve Figure 1 The pure water in the second water storage container 700 is mixed with the "first cup of water" to dilute and reduce the TDS value, or to achieve Figure 2 The initial "first cup of water" flows back into the first water storage container 300 and provides pure water to the user through the second water storage container 700.

[0050] The present invention utilizes the cooperation of components such as the second control valve 401, the return water pipeline 600, the first water storage container 300, and the second water storage container 700 to solve the problem of high concentration of the "first cup of water", and returns the concentrated water to reduce the waste of water resources caused by the direct discharge of concentrated water. While recycling the "first cup of water", the second water storage container 700 is used to provide pure water to the user, or the stored water in the second water storage container is used to dilute the concentration of the first cup of water. The process does not affect the user's use of pure water. The system does not need to automatically process the "first cup of water" at regular intervals, and only needs to process it when the user uses the pure water.

[0051] Among them, Figure 4 As shown, the ends of the concentrated water pipeline 500 and the return water pipeline 600 communicating with the first water storage container 300 can be directly connected to the first water storage container 300, or can be connected to the first water storage container 300 as shown in FIG. Figure 2 and Figure 3As shown, the concentrated water pipeline 500 and the return water pipeline 600 are connected to the confluence pipeline 303, and are connected to the first water storage container 300 through the confluence pipeline 303. Figure 4 As shown, the second water intake switch 501 can also be directly connected to the first water storage container 300 through a water pipe, as shown in FIG. Figure 2 As shown, the second water intake switch 501 can also be connected to the confluence pipe 303.

[0052] In some specific embodiments of the present invention, the water purification system is further provided with a water quality detection device 304, which is used to detect the water quality of the water in the first water storage container 300. In this embodiment, the water quality detection device 304 mainly detects the TDS value of the water, and can also detect other indicators of the water according to the use requirements. In this embodiment, the water quality detection device 304 can be set in the first water storage container 300 (such as Figure 2 ), or it can be set on the raw water pipeline 200 (such as Figure 4 The first water storage container 300 is connected to a drain line 305. This line can be connected directly to the first water storage container 300, to the confluence line 303, or to the concentrated water line 500. A fourth control valve 306 is provided on the drain line 305. A solenoid valve can be used. When the water quality testing device 304 detects that the TDS value or other indicators of the water in the first water storage container 300 exceed a set value before entering the raw water terminal 101, the fourth control valve 306 opens, and the water in the first water storage container 300 is discharged through the drain line 305. Tap water is added to the first water storage container 300 to reduce the water concentration within the first water storage container 300.

[0053] Furthermore, a first flow rate detection device 307 is provided at the return water end of the first water storage container 300, which is the connection between the confluence pipe 303 and the first water storage container 300, or the connection between the concentrate pipe 500 and the first water storage container 300. The first flow rate detection device 307 detects the amount of concentrate flowing back into the first water storage container 300. When the amount of concentrate flowing back exceeds a set value, the fourth control valve 306 is opened to discharge the water in the first water storage container 300, thereby preventing the TDS value of the water in the first water storage container 300 from being too high.

[0054] The present invention, as Figure 2 and Figure 4 As shown, the first water storage container 300 and the second water storage container 700 can be independent containers, or the first water storage container 300 and the second water storage container 700 can be integrated together to form a water storage device, which is equivalent to the pressure water storage chamber 701 (such as Figure 3 ) or the pure water chamber 702 is integrated into the chamber of the first water storage container 300; the water pressure of the chamber of the first water storage container 300 acts on the outer wall of the pressure water storage chamber 701 (such as Figure 3), or use the second pressurizing device 712 to extract the pure water chamber 702. The integration of the first water storage container 300 and the second water storage container 700 can reduce the structural cost and reduce the space occupied by the system.

[0055] In some specific embodiments of the present invention, a first one-way valve 502 and a waste water valve 503 are provided on the concentrated water pipeline 500. The first one-way valve 502 controls the unidirectional flow of water on the raw water pipeline 200 toward the first water storage container 300, and the waste water valve 503 controls the water flow rate on the concentrated water pipeline 500.

[0056] In some specific embodiments of the present invention, a second one-way valve 403 and a pressure detection device 404 are provided on the pure water pipeline 400. The second one-way valve 403 is located near the pure water end 102 to prevent water from flowing back toward the pure water end 102. The pressure detection device 404 is located near the first water inlet switch 402, that is, the pressure detection device 404 is located downstream of the connection point between the pressure water storage chamber 701 and the pure water pipeline 400. By using the pressure detection device 404 to detect the water pressure in the pure water pipeline 400, the open and closed state of the first water inlet switch 402 and the water pressure in the pressure water storage chamber 701 can be monitored, thereby controlling the water purification system to enter the corresponding mode. That is, when the first water intake switch 402 changes from open to closed, water is discharged from the first water intake switch 402 and enters the second water storage container 700. The pressure monitoring device detects that the pressure on the pure water pipeline 400 gradually increases until the second water storage container 700 is filled with water and the water pressure in the pure water pipeline 400 reaches the maximum value, or the pressure detection device 404 is set to a certain value. At this time, a feedback signal is sent to the system, and the water purification system enters the standby state.

[0057] In some embodiments of the present invention, a second flow detection device 405 is provided on the pure water pipeline 400, located downstream of the junction between the pressure water storage chamber 701 and the pure water pipeline 400. The second flow detection device 405 is used to detect the amount of water discharged through the first water dispensing switch 402. When the first water dispensing switch 402 is turned on, the water in the second water storage container 700 is first discharged toward the first water dispensing switch 402 for use. If the amount of water in the second water storage container 700 decreases, or if the amount of water flowing through the second flow detection device 405 reaches a certain value, a feedback system is generated, opening the second control valve 401 and closing the third control valve 601, resuming normal water production.

[0058] In some specific embodiments of the present invention, a composite filter element 203 is provided on the raw water pipeline 200, and the raw water is purified once before entering the reverse osmosis filter element 100; a post-carbon filter element 406 is provided on the pure water pipeline 400, and the post-carbon filter element 406 is used to improve the taste of pure water.

[0059] The first control valve 201, the first pressure boosting device 202, the second control valve 401 and other electrical components are connected to the controller of the water purification system for automatic control.

[0060] Throughout this specification, references to terms such as "specific embodiments" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A water purification system, characterized in that: include: A reverse osmosis filter element (100) is provided with a raw water end (101), a pure water end (102) and a concentrated water end (103); A raw water pipeline (200) is connected to the raw water end (101), and a first control valve (201) and a first pressure boosting device (202) are provided on the raw water pipeline (200); A first water storage container (300) is connected to a water source, and the first water storage container (300) is in communication with the raw water pipeline (200); A pure water pipeline (400) is connected to the pure water end (102), and a first water intake switch (402) is provided at the tail end of the pure water pipeline (400); A concentrated water pipeline (500) is connected to the concentrated water end (103), and the concentrated water pipeline (500) is in communication with the first water storage container (300); a second water storage container (700), wherein water can flow controllably between the second water storage container (700) and the pure water pipeline (400); A second water intake switch (501) is connected to the first water storage container (300); The apparatus further comprises a return water pipeline (600), wherein the pure water pipeline (400) is provided with a second control valve (401), one end of the return water pipeline (600) is connected to the pure water pipeline (400) and connected to the upstream side of the second control valve (401), and the other end is communicated with the first water storage container (300), the return water pipeline (600) is provided with a third control valve (601), and the second water storage container (700) is connected to the pure water pipeline (400) and connected to the downstream side of the second control valve (401); The pure water pipeline (400) is provided with a second one-way valve (403) and a pressure detection device (404), wherein the second one-way valve (403) is provided adjacent to the pure water end (102), and the pressure detection device (404) is provided adjacent to the first water intake switch (402); The first water storage container (300) is connected to a confluence pipeline (303), and the concentrated water pipeline (500) and the return water pipeline (600) are connected to the confluence pipeline (303); The first water storage container (300) is connected to a drainage pipeline (305), and a fourth control valve (306) is provided on the drainage pipeline (305); The second water intake switch (501) is connected to the confluence pipe (303); The drainage pipeline (305) is connected to the confluence pipeline (303); The second water storage container (700) has a pressure water storage chamber (701) with a variable volume, and the pressure water storage chamber (701) is connected to the pure water pipeline (400) via a water pipeline (710); The first water storage container (300) and the second water storage container (700) are integrated into a water storage device.

2. The water purification system according to claim 1, characterized in that: A water quality detection device (304) for detecting the water in the first water storage container (300) is also provided.

3. The water purification system according to claim 2, characterized in that: A first flow detection device (307) is provided at the return water end of the first water storage container (300), and the first flow detection device (307) is used to detect the amount of concentrated water flowing back into the first water storage container (300).

4. The water purification system according to claim 1, characterized in that: The concentrated water pipeline (500) is provided with a first one-way valve (502) and a waste water valve (503). The first one-way valve (502) controls the one-way flow of water on the raw water pipeline (200) toward the first water storage container (300), and the waste water valve (503) controls the water flow rate on the concentrated water pipeline (500).

5. The water purification system according to claim 1, characterized in that: A second flow detection device (405) is provided on the pure water pipeline (400), and the second flow detection device (405) is located downstream of the connection point between the second water storage container (700) and the pure water pipeline (400).

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