A net drink system

Abstract

The utility model provides a kind of pure drinking system, comprising: raw water tank, booster pump, RO membrane filter component, concentrated water valve, two-position three-way valve, pure water tank, first water pump, check valve and water outlet component.Relative to prior art, the pure drinking system of the utility model can deliver the flushing water for flushing new RO membrane filter component back to raw water tank, user only needs to remove raw water tank to replace flushing water, operation is relatively convenient and fast;After long-term use of RO membrane filter component or after a period of inactivity, pure water in pure water tank can be pumped back to the front section of membrane of RO membrane filter component by first water pump for flushing, thereby avoiding long-term accumulation of pollutants in the front section of membrane of RO membrane filter component, and the water after flushing returns to raw water tank with pollutants, thereby effectively maintaining the cleanliness of RO membrane filter component.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, specifically to a drinking water purification system. Background Technology

[0002] A water purifier is a new type of water purification product that integrates water purification and drinking functions, meeting multiple drinking water needs of families and representing a major change in family drinking habits.

[0003] Water purifiers on the market typically require the installation of an RO (reverse osmosis) membrane filter. This filter purifies the water in the raw water tank, producing pure water and discharging concentrated water. However, when a new RO membrane filter is first used, the quality of the pure water it produces is not up to standard. Therefore, the RO membrane filter needs to be flushed before using a new one. Currently, the flushing method for water purifiers on the market is as follows: Flushing water is added to the raw water tank, flows out of the raw water tank, passes through the RO membrane filter, and finally enters the pure water tank. The user then needs to remove both the raw water tank and the pure water tank, add flushing water to the raw water tank, and empty the pure water tank. Finally, the raw water tank and the pure water tank are reinstalled, and this flushing process is repeated until the RO membrane filter is completely flushed. Because both the raw water tank and the pure water tank need to be disassembled and reassembled, and the pure water tank usually has a smaller capacity than the raw water tank, the pure water tank needs to be repeatedly disassembled and reassembled, making the overall operation quite cumbersome. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and provide a water purification system.

[0005] One embodiment of the present invention provides a water purification system, comprising: a raw water tank, a booster pump, an RO membrane filter assembly, a concentrate valve, a two-position three-way valve, a pure water tank, a first water pump, a check valve, and a water outlet assembly;

[0006] The raw water tank has a return water inlet and a raw water outlet; the RO membrane filter assembly has a pre-membrane section and a post-membrane section; the pure water tank has a pure water inlet and a pure water outlet; and the two-position three-way valve has an inlet end, a first outlet end and a second outlet end.

[0007] The raw water outlet of the raw water tank, the booster pump, and the front section of the RO membrane filter assembly are connected in sequence. The front section of the RO membrane filter assembly is connected to the return water outlet of the raw water tank through the concentrate valve. The rear section of the RO membrane filter assembly is connected to the inlet of the two-position three-way valve. The first outlet of the two-position three-way valve is connected to the return water outlet of the raw water tank. The second outlet of the two-position three-way valve is connected to the pure water inlet of the pure water tank. The pure water outlet of the pure water tank, the first pump, the check valve, and the front section of the RO membrane filter assembly are connected in sequence. The pure water outlet of the pure water tank is also connected to the outlet assembly.

[0008] In some optional embodiments, the water purification system further includes an ice tank, wherein the pure water outlet of the pure water tank, the ice tank, and the water outlet assembly are connected in sequence, the ice tank is also connected to the first water pump, and the pure water outlet of the pure water tank is connected to the first water pump through the ice tank.

[0009] In some optional embodiments, the water outlet assembly includes a second water pump and an instant heating module, wherein the pure water outlet of the pure water tank, the second water pump, and the instant heating module are connected in sequence.

[0010] In some optional embodiments, the water outlet assembly further includes a water vapor separator, and the pure water outlet of the pure water tank, the second water pump, the instant heating module and the water vapor separator are connected in sequence.

[0011] In some alternative embodiments, the concentrate valve is a concentrate solenoid valve.

[0012] In some alternative implementations, the two-position three-way valve is a two-position three-way solenoid valve.

[0013] In some optional embodiments, the RO membrane filtration assembly has a first inlet, a concentrate inlet, and a second inlet at the membrane front end. The first inlet is connected to the booster pump, the concentrate inlet is connected to the concentrate valve, and the second inlet is connected to the check valve. The concentrate inlet and the second inlet are located on opposite sides of the first inlet.

[0014] In some alternative implementations, the delivery water pressure of the first water pump is lower than the operating water pressure of the RO membrane filter assembly.

[0015] Compared to existing technologies, the purification system of this invention can return the flushing water used to rinse new RO membrane filter components to the raw water tank. Users only need to remove the raw water tank to replace the flushing water, making the operation convenient and quick. In addition, after long-term use of the RO membrane filter components or after a period of inactivity, the pure water in the pure water tank can be pumped back to the front end of the RO membrane filter components for rinsing using the first water pump. This prevents the long-term accumulation of contaminants on the front end of the RO membrane filter components. The flushing water carries the contaminants back to the raw water tank, thus effectively keeping the RO membrane filter components clean.

[0016] To provide a clearer understanding of this invention, the specific embodiments of this invention will be described below in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the module connection of a water purification system according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of an RO membrane filtration assembly according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the module connection of a water purification system according to another embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] 10. Raw water tank; 20. Booster pump; 30. RO membrane filter assembly; 31. Pre-membrane section; 311. First inlet; 312. Concentrate inlet; 313. Second inlet; 32. Post-membrane section; 40. Concentrate valve; 50. Two-position three-way valve; 60. Pure water tank; 61. Ice tank; 70. First pump; 80. Check valve; 90. Outlet assembly; 91. Second pump; 92. Instant heating module; 93. Water vapor separator. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. In the description of the present utility model, unless otherwise stated, "a plurality of" means two or more, and "a number" means one or more. In addition, unless otherwise stated, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] In the description of this utility model, references to terms such as "one embodiment," "some alternative implementations," or "some optional embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above 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 one or more embodiments or examples.

[0026] Please see Figure 1 One embodiment of this utility model provides a water purification system, including: a raw water tank 10, a booster pump 20, an RO membrane filter assembly 30, a concentrate valve 40, a two-position three-way valve 50, a pure water tank 60, a first water pump 70, a one-way valve 80, and a water outlet assembly 90.

[0027] Please see Figure 2 The raw water tank 10 has a return water inlet and a raw water outlet; the RO membrane filter assembly 30 has a pre-membrane section 31 and a post-membrane section 32; the pure water tank 60 has a pure water inlet and a pure water outlet; and the two-position three-way valve 50 has an inlet end, a first outlet end, and a second outlet end.

[0028] The raw water outlet of the raw water tank 10, the booster pump 20, and the membrane front section 31 of the RO membrane filter assembly 30 are connected in sequence. The membrane front section 31 of the RO membrane filter assembly 30 is connected to the return water outlet of the raw water tank 10 through the concentrate valve 40. The membrane rear section 32 of the RO membrane filter assembly 30 is connected to the inlet of the two-position three-way valve 50. The first outlet of the two-position three-way valve 50 is connected to the return water outlet of the raw water tank 10. The second outlet of the two-position three-way valve 50 is connected to the pure water inlet of the pure water tank 60. The pure water outlet of the pure water tank 60, the first pump 70, the check valve 80, and the membrane front section 31 of the RO membrane filter assembly 30 are connected in sequence. The pure water outlet of the pure water tank 60 is also connected to the outlet assembly 90.

[0029] The working principle of a water purification system according to an embodiment of this utility model is explained below:

[0030] Normal operating mode: The inlet and first outlet of the two-position three-way valve 50 are closed, and the inlet and second outlet of the two-position three-way valve 50 are connected. The check valve 80 is closed. Driven by the booster pump 20, the raw water sequentially passes through the raw water outlet of the raw water tank 10, the booster pump 20, and the pre-membrane section 31 of the RO membrane filter assembly 30. After being filtered by the RO membrane filter assembly 30, the raw water produces pure water. The pure water is output from the post-membrane section 32 of the RO membrane filter assembly 30 and then enters the pure water tank 60. When drinking water is needed, the pure water flows from the pure water outlet of the pure water tank 60 to the outlet assembly 90, and then the pure water is output from the outlet assembly 90.

[0031] The flushing mode of the new RO membrane filter assembly 30 is as follows: the concentrate valve 40 is closed, the inlet and first outlet of the two-position three-way valve 50 are connected, and the inlet and second outlet of the two-position three-way valve 50 are closed. Driven by the booster pump 20, the raw water sequentially passes through the raw water outlet of the raw water tank 10, the booster pump 20, the pre-membrane section 31 of the RO membrane filter assembly 30, the post-membrane section 32 of the RO membrane filter assembly 30, the inlet and first outlet of the two-position three-way valve 50, and then returns to the raw water tank 10 from the return port. Users only need to remove the raw water tank 10 and replace the water in it, making the operation quite convenient.

[0032] Pre-membrane flushing mode: Concentrate valve 40 is open, check valve 80 is open, first water pump 70 is open, and two-position three-way valve 50 is closed. Pure water from pure water tank 60 sequentially passes through the pure water outlet of pure water tank 60, the first water pump 70, and check valve 80, then enters the pre-membrane section 31 of the RO membrane filter assembly 30, thus flushing the pre-membrane section 31 of the RO membrane filter assembly 30. The flushed pure water, carrying contaminants, passes through concentrate valve 40 and enters the raw water tank 10 through the return port. With prolonged use, a significant amount of contaminants accumulates in the pre-membrane section 31 of the RO membrane filter assembly 30. Flushing the pre-membrane section effectively extends the service life of the RO membrane filter assembly 30. In addition, when the water purification system is not used for a long time, such as when the user is away from home for a long vacation, the contaminants in the membrane front section 31 of the RO membrane filter assembly 30 can easily affect the service life of the RO membrane filter assembly 30. The first water pump 70 can be started at regular intervals to drive the pure water in the pure water tank 60 to flush the membrane front section 31 of the RO membrane filter assembly 30, thereby keeping the membrane front section 31 of the RO membrane filter assembly 30 clean. When the user needs to use the water purification system again, the raw water in the raw water tank 10 can be poured out and new raw water can be added.

[0033] The following is a test method and results of the flushing mode of the new RO membrane filter component 30 in a water purification system according to an embodiment of this utility model:

[0034] Test Method: The raw water tank 10 was initially filled with test water, with a COD of 1.21 and a TDS of 147. Then, the raw water tank 10 was inserted into the drinking water purification system, and the new RO membrane filter assembly 30 was flushed. The test water performed the first flush on the new RO membrane filter assembly 30. After a suitable flushing time, 200ml of the test water produced from the downstream section 32 of the RO membrane filter assembly 30 was sampled and tested. The measured COD was 37.67 and the TDS was 45.86. Subsequently, the test water in the raw water tank 10 was replaced, and a second flush was performed. Similarly, 200ml of the sample was taken and tested, resulting in a COD of 22.56 and a TDS of 8.24. Finally, the test water in the raw water tank 10 was replaced, and a third flush was performed. Similarly, 200ml of the sample was taken and tested, resulting in a COD of 21.94. The TDS was 2.17. Then, the test water in raw water tank 10 was replaced, and a third flush was performed. Similarly, 200ml of sample was taken for testing. The measured COD was 21.22 and TDS was 0.89. Finally, the test water in raw water tank 10 was replaced, and the inlet and first outlet of the two-position three-way valve 50 were closed, while the inlet and second outlet of the two-position three-way valve 50 were connected. The test water was then transported to the pure water tank 60 after passing through the RO membrane filter assembly 30. After filling the first pure water tank 60, it was emptied. Then, when filling the second pure water tank 60, 200ml of test water produced by the downstream section 32 of the RO membrane filter assembly 30 was sampled for testing. The measured COD was 14.44 and TDS was 0.65, which meets the requirements for RO reverse osmosis system effluent water quality.

[0035] Since the new RO membrane filter module 30 flushing mode only requires changing the water in the raw water tank 10 a few times, the operation is relatively convenient.

[0036] It should be noted that the purpose of the one-way valve 80 is to prevent pure water from flowing back into the pure water tank 60 after rinsing the downstream section 32 of the RO membrane filter assembly 30.

[0037] Please see Figure 3Since some water purification systems also have ice-making functions, they are usually equipped with an ice tank 61. The ice tank 61 is used to store ice water or ice cubes. In some optional embodiments, the water purification system also includes an ice tank 61. The pure water outlet of the pure water tank 60, the ice tank 61, and the water outlet assembly 90 are connected in sequence. The ice tank 61 is also connected to the first water pump 70. The pure water outlet of the pure water tank 60 is connected to the first water pump 70 through the ice tank 61. In normal use mode, after the pure water flows out of the pure water outlet of the pure water tank 60, it can first pass through the ice tank 61 and then enter the water outlet assembly 90, which facilitates the production of ice water or ice cubes. In pre-rinse mode, after the pure water flows out of the pure water outlet of the pure water tank 60, it can first pass through the ice tank 61 and then enter the first water pump 70. Of course, in other embodiments, the pure water tank 60 can also be directly connected to the first water pump 70 without passing through the ice tank 61.

[0038] The specific structure of the water outlet assembly 90 can be designed according to actual needs. For example, in some optional embodiments, the water outlet assembly 90 includes a second water pump 91 and an instant heating module 92. The pure water outlet of the pure water tank 60, the second water pump 91, and the instant heating module 92 are connected in sequence. The instant heating module 92 is used to heat the pure water, enabling the output of hot water and improving the user experience. The structure and principle of the instant heating module 92 are well known to those skilled in the art and will not be described in detail here.

[0039] In some optional embodiments, the water outlet assembly 90 further includes a water vapor separator 93, and the pure water outlet of the pure water tank 60, the second water pump 91, the instant heating module 92, and the water vapor separator 93 are connected in sequence. The water vapor separator 93 is used to prevent high-temperature water vapor from being ejected when hot water is dispensed. Its structure and principle are well known to those skilled in the art and will not be described in detail here.

[0040] In some optional embodiments, the concentrate valve 40 is a concentrate solenoid valve, the two-position three-way valve 50 is a two-position three-way solenoid valve, and the check valve 80 is a one-way solenoid valve, facilitating valve on / off control. The drinking water system typically also includes a control module, which is signal-connected to the booster pump 20, the first water pump 70, the second water pump 91, the concentrate valve 40, and the two-position three-way valve 50, thereby facilitating electrical control. The signal connection can be wired or wireless.

[0041] In some optional embodiments, the RO membrane filtration assembly 30 has a first inlet 31, a concentrate outlet 312, and a second inlet 313. The first inlet 311 is connected to the booster pump 20, the concentrate outlet 312 is connected to the concentrate valve 40, and the second inlet 313 is connected to the check valve 80. The concentrate outlet 312 and the second inlet 313 are located on both sides of the first inlet 311, thereby increasing the distance between the second inlet 313 and the concentrate outlet 312, allowing pure water to be more thoroughly flushed in the membrane pre-section 31. Moreover, most of the contaminants in the raw water entering through the first inlet 311 are located between the second inlet 313 and the concentrate outlet 312, which facilitates the flushing of the main concentration of contaminants by pure water after entering the second inlet 313.

[0042] In some alternative embodiments, the delivery water pressure of the first water pump 70 is less than the working water pressure of the RO membrane filter assembly 30, so that pure water can pass smoothly through the front section 31 of the RO membrane filter assembly 30, reducing or preventing water from entering the rear section 32 of the RO membrane filter assembly 30 through the RO membrane.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A net drink system characterized by, include: Raw water tank, booster pump, RO membrane filter assembly, concentrate valve, two-position three-way valve, pure water tank, first water pump, check valve and outlet assembly; The raw water tank has a return water inlet and a raw water outlet; the RO membrane filter assembly has a pre-membrane section and a post-membrane section; the pure water tank has a pure water inlet and a pure water outlet; and the two-position three-way valve has an inlet end, a first outlet end and a second outlet end. The raw water outlet of the raw water tank, the booster pump, and the front section of the RO membrane filter assembly are connected in sequence. The front section of the RO membrane filter assembly is connected to the return water outlet of the raw water tank through the concentrate valve. The rear section of the RO membrane filter assembly is connected to the inlet of the two-position three-way valve. The first outlet of the two-position three-way valve is connected to the return water outlet of the raw water tank. The second outlet of the two-position three-way valve is connected to the pure water inlet of the pure water tank. The pure water outlet of the pure water tank, the first pump, the check valve, and the front section of the RO membrane filter assembly are connected in sequence. The pure water outlet of the pure water tank is also connected to the outlet assembly.

2. A purified drinking system according to claim 1, characterized in that It also includes an ice tank, and the pure water outlet of the pure water tank, the ice tank and the water outlet assembly are connected in sequence. The ice tank is also connected to the first water pump, and the pure water outlet of the pure water tank is connected to the first water pump through the ice tank.

3. The water purification system according to claim 1, characterized in that: The water outlet assembly includes a second water pump and an instant heating module, and the pure water outlet of the pure water tank, the second water pump, and the instant heating module are connected in sequence.

4. The water purification system according to claim 3, characterized in that: The water outlet assembly also includes a water vapor separator, and the pure water outlet of the pure water tank, the second water pump, the instant heating module and the water vapor separator are connected in sequence.

5. A water purification system according to claim 1, characterized in that: The concentrate valve is a concentrate solenoid valve.

6. The water purification system according to claim 1, characterized in that: The two-position three-way valve is a two-position three-way solenoid valve.

7. A water purification system according to any one of claims 1 to 6, characterized in that: The RO membrane filtration assembly has a first inlet, a concentrate inlet, and a second inlet at the front end of the membrane. The first inlet is connected to the booster pump, the concentrate inlet is connected to the concentrate valve, and the second inlet is connected to the check valve. The concentrate inlet and the second inlet are located on opposite sides of the first inlet.

8. A water purification system according to any one of claims 1 to 6, characterized in that: The water pressure delivered by the first water pump is lower than the working water pressure of the RO membrane filter assembly.

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