Pure water countercurrent device and pure water countercurrent flushing system

Abstract

The utility model provides a pure water countercurrent device and a pure water countercurrent flushing system, the pure water countercurrent device comprises a countercurrent shell, one end of the countercurrent shell is provided with a countercurrent channel, the countercurrent channel is communicated with the interior of the countercurrent shell, and the countercurrent channel is used for being communicated with a pure water outlet of an RO filter element; the pressing plate is arranged in the countercurrent shell, and the outer peripheral surface of the pressing plate is in sealed connection with the inner wall of the countercurrent shell; the elastic piece is arranged in the countercurrent shell, the elastic piece abuts against the pressing plate, the pressing plate is located between the elastic piece and the countercurrent channel, and the pressing plate can move between the countercurrent channel and the elastic piece. The pure water countercurrent device provided by the embodiment of the utility model can reduce the concentration of the concentrated water end of the RO filter element and reduce or inhibit the forward osmosis phenomenon through pure water countercurrent, so that the TDS value of the first cup of water is reduced, and the effect is relatively good.

Description

Technical Field

[0001] This application relates to the field of water purification equipment, and particularly to a pure water countercurrent device and a pure water countercurrent flushing system. Background Art

[0002] At present, people have higher and higher requirements for domestic drinking water. For this reason, many families are equipped with various water purification equipment, such as water softeners, ultrafiltration machines, reverse osmosis water purifiers, etc. The emergence of various water purification equipment meets various water use needs in people's lives, and at the same time improves people's living standards and water use health.

[0003] At present, in order to improve the TDS value (total dissolved solids) of the first glass of water, most of the reverse osmosis water purifiers on the market use a pure water reflux technical solution, that is, the pure water is refluxed to the water inlet end of the filter element, thereby reducing the concentration of water at the water inlet end and slowing down the phenomenon of forward osmosis, but the effect is not good. Summary of the Invention

[0004] The embodiments of this application provide a pure water countercurrent device and a pure water countercurrent flushing system to solve the problems existing in the related technologies. The technical solutions are as follows:

[0005] In a first aspect, the embodiments of this application provide a pure water countercurrent device, including:

[0006] A countercurrent housing, one end of the countercurrent housing has a countercurrent channel, the countercurrent channel is communicated with the inside of the countercurrent housing, and the countercurrent channel is used to communicate with the pure water outlet of the RO filter element;

[0007] A pressing plate, which is arranged in the countercurrent housing, and the outer peripheral surface of the pressing plate is hermetically connected to the inner wall of the countercurrent housing;

[0008] An elastic member, which is arranged in the countercurrent housing, the elastic member abuts against the pressing plate, the pressing plate is located between the elastic member and the countercurrent channel, and the pressing plate can move between the countercurrent channel and the elastic member.

[0009] In an implementation manner, the pure water countercurrent device further includes:

[0010] A positioning component, the positioning component includes two positioning columns, one of the positioning columns is fixed on the pressing plate, the other positioning column is fixed on the countercurrent housing, and the two positioning columns are arranged oppositely, and both ends of the elastic member are respectively sleeved on the two positioning columns.

[0011] In an implementation manner, the number of both the positioning component and the elastic member is four, both ends of the four elastic members are respectively sleeved on the positioning columns of the corresponding positioning components, and the four positioning components are evenly distributed around the center of the pressing plate.

[0012] In one embodiment, the pure water countercurrent device further includes a first sealing assembly disposed on the outer peripheral surface of the pressing plate, and the pressing plate is hermetically connected to the inner wall of the countercurrent housing through the first sealing assembly.

[0013] In one embodiment, the first sealing assembly includes a first sealing groove and a first sealing ring. The first sealing groove is disposed on the outer peripheral surface of the pressing plate, the first sealing ring is installed in the first sealing groove, and the first sealing groove is hermetically connected to the inner wall of the countercurrent housing through the first sealing ring.

[0014] In one embodiment, the countercurrent housing includes a housing main body and a housing cover. The housing cover is hermetically connected to the housing main body, and the countercurrent housing has a countercurrent column on which the countercurrent channel is located inside.

[0015] In one embodiment, the housing cover includes a bottom plate and a sealing side plate. The sealing side plate is connected to the bottom plate; after the sealing side plate is inserted into the housing main body, the outer peripheral surface of the sealing side plate is closely attached to the inner wall of the housing main body.

[0016] In one embodiment, the elastic member is a spring.

[0017] In a second aspect, an embodiment of the present application provides a pure water countercurrent flushing system, which at least includes:

[0018] An RO filter element, the water inlet of which is communicated with an external water source;

[0019] A concentrated water outlet pipe, one end of which is communicated with the concentrated water outlet end of the RO filter element, and a concentrated water solenoid valve is provided on the concentrated water outlet pipe;

[0020] A first pure water pipe, one end of which is communicated with the pure water outlet of the RO filter element, the other end of which is communicated with a pure water faucet, and a first solenoid valve and a three-way valve are provided on the first pure water pipe, and the first solenoid valve is located between the three-way valve and the pure water faucet; and

[0021] The pure water countercurrent device as described in any one of the above, the countercurrent channel of the pure water countercurrent device is communicated with one of the outlets of the three-way valve.

[0022] In one embodiment, the pure water countercurrent flushing system further includes:

[0023] The PPC filter element assembly includes a pre-filter element and a post-filter element. The water inlet of the pre-filter element is connected to an external water source. The pure water outlet of the pre-filter element is connected to the water inlet of the RO filter element through a second pure water pipe. A second solenoid valve and a booster pump are provided on the second pure water pipe. The pure water outlet of the RO filter element is connected to the water inlet of the post-filter element through the first pure water pipe. The pure water outlet of the post-filter element is connected to the pure water faucet.

[0024] The advantages or beneficial effects in the above technical solutions at least include:

[0025] The pure water countercurrent device of the embodiment of the present application includes a countercurrent housing, a pressing plate and an elastic member. One end of the countercurrent housing has a countercurrent channel for communicating with the pure water outlet of the RO filter element. The outer peripheral surface of the pressing plate is sealingly connected to the inner wall of the countercurrent housing. The elastic member abuts against the pressing plate. The pressing plate is located between the countercurrent channel and the elastic member and can move between the countercurrent channel and the elastic member. Since one end of the countercurrent housing has a countercurrent channel, when the countercurrent housing is combined with the RO filter element, in the energy storage mode, the pure water filtered by the RO filter element can directly enter the countercurrent housing through the countercurrent channel, and under the action of water pressure, the pressing plate is pushed and the elastic member is compressed for energy storage. When the RO filter element stops making water, under the action of the elastic force of the elastic member and the atmospheric pressure in the countercurrent housing, the pure water is squeezed out of the countercurrent housing and flows back through the countercurrent channel to the concentrated water end of the RO filter element to discharge the concentrated water, thereby reducing the concentration at the concentrated water end. The pure water countercurrent device of the embodiment of the present application can reduce the concentration at the concentrated water end of the RO filter element through pure water countercurrent, reduce or inhibit the phenomenon of forward osmosis, thereby reducing the TDS value of the first glass of water, and the effect is better.

[0026] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the drawings and the following detailed description. Description of the Drawings

[0027] In the drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in accordance with the present application and should not be regarded as limiting the scope of the present application.

[0028] Figure 1 It is a schematic structural diagram of the pure water countercurrent device;

[0029] Figure 2 It is a schematic diagram of the water flow of the pure water countercurrent device in the energy storage mode;

[0030] Figure 3Schematic diagram of water flow of the pure water countercurrent device in the countercurrent mode;

[0031] Figure 4 Schematic diagram of the structure of the pure water countercurrent flushing system;

[0032] Explanation of the reference numerals:

[0033] 1. Countercurrent housing; 2. Countercurrent channel; 3. Pressing plate; 4. Elastic member; 5. Positioning assembly; 51. Positioning post; 6. First sealing assembly; 61. First sealing groove; 62. First sealing ring; 101. Housing main body; 102. Housing cover; 103. Countercurrent column; 1021. Bottom plate; 1022. Sealing side plate; 8. RO filter element; 9. Concentrate outlet pipe; 10. Concentrate solenoid valve; 11. First pure water pipe; 12. Pure water faucet; 13. First solenoid valve; 14. Three-way valve; 15. PPC filter element assembly; 151. Pre-filter; 152. Post-filter; 16. Second pure water pipe; 17. Second solenoid valve; 18. Booster pump. Detailed implementation manners

[0034] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0035] Embodiment 1:

[0036] As Figures 1 to 3 shown, an embodiment of the present application provides a pure water countercurrent device, including: a countercurrent housing 1, one end of the countercurrent housing 1 has a countercurrent channel 2, the countercurrent channel 2 is communicated with the inside of the countercurrent housing 1, and the countercurrent channel 2 is used for communicating with the pure water outlet of the RO filter element 8; a pressing plate 3, disposed in the countercurrent housing 1, and the outer peripheral surface of the pressing plate 3 is hermetically connected to the inner wall of the countercurrent housing 1; an elastic member 4, disposed in the countercurrent housing 1, the elastic member 4 abuts against the pressing plate 3, the pressing plate 3 is located between the countercurrent channel 2 and the elastic member 4, and the pressing plate 3 can move between the countercurrent channel 2 and the elastic member 4.

[0037] The pure water countercurrent device of the embodiment of the present application includes a countercurrent housing 1, a pressing plate 3 and an elastic member 4. Since one end of the countercurrent housing 1 has a countercurrent channel 2, when the countercurrent housing 1 is combined with the RO filter element 8, in the energy storage mode, the pure water filtered by the RO filter element 8 can directly enter the countercurrent housing 1 through the countercurrent channel 2, and under the action of water pressure, the pressing plate 3 is pushed and the elastic member 4 is compressed for energy storage. When the RO filter element 8 stops making water, under the action of the elastic force of the elastic member 4 and the atmospheric pressure in the countercurrent housing 1, the pure water is extruded out of the countercurrent housing 1 and flows back to the concentrated water end of the RO filter element 8 through the countercurrent channel 2 to discharge the concentrated water, so as to reduce the concentration at the concentrated water end, reduce or inhibit the forward osmosis phenomenon, thereby reducing the TDS value of the first glass of water, and the effect is better.

[0038] In one embodiment, the elastic member 4 is a spring. In order to position the elastic member 4, the pure water countercurrent device further includes a positioning assembly 5. The positioning assembly 5 includes two positioning posts 51. One of the positioning posts 51 is fixed on the pressing plate 3, and the other positioning post 51 is fixed on the countercurrent housing 1, and the two positioning posts 51 are arranged oppositely. Both ends of the elastic member 4 are respectively sleeved on the two positioning posts 51. The elastic member 4 is positioned by the two positioning posts 51 to prevent the position of the elastic member 4 from shifting during compression or extension.

[0039] In one embodiment, the number of the positioning assemblies 5 and the elastic members 4 is four each. Both ends of the four elastic members 4 are respectively sleeved on the positioning posts 51 of the corresponding positioning assemblies 5, and the four positioning assemblies 5 are evenly distributed around the center of the pressing plate 3. The four elastic members 4 have sufficient elastic force to enable the pure water entering the interior of the countercurrent housing 1 to flow back out.

[0040] The pressing plate 3 of the embodiment of the present application is hermetically connected to the inner wall of the countercurrent housing 1. In order to achieve the hermetic connection between the pressing plate 3 and the inner wall of the countercurrent housing 1, the pure water countercurrent device further includes a first sealing assembly 6. The first sealing assembly 6 is arranged on the outer peripheral surface of the pressing plate 3, and the pressing plate 3 is hermetically connected to the inner wall of the countercurrent housing 1 through the first sealing assembly 6.

[0041] In one embodiment, the first sealing assembly 6 includes a first sealing groove 61 and a first sealing ring 62. The first sealing groove 61 is arranged on the outer peripheral surface of the pressing plate 3, the first sealing ring 62 is installed in the first sealing groove 61, and the first sealing groove 61 is hermetically connected to the inner wall of the countercurrent housing 1 through the first sealing ring 62. Preferably, the number of the first sealing grooves 61 and the first sealing rings 62 is two each, and the two first sealing rings 62 are respectively installed in the two first sealing grooves 61. In this embodiment, the hermetic connection between the pressing plate 3 and the inner wall of the countercurrent housing 1 is realized through the arrangement of the first sealing assembly 6, and it is avoided that the pure water enters the countercurrent housing 1 through the gap between the pressing plate 3 and the countercurrent housing 1. Preferably, the first sealing ring 62 is an O-ring.

[0042] The countercurrent housing 1 includes a housing cover 102 and a housing body 101. The housing cover 102 is sealingly connected to the housing body 101. There is a countercurrent column 103 on the housing cover 102, and the countercurrent channel 2 is located inside the countercurrent column 103. To make the energy storage and countercurrent effect of the pure water countercurrent device better, in the initial state, under the elastic force of the elastic member 4, the pressing plate 3 can be in contact with the housing cover 102.

[0043] To achieve the sealing connection between the housing cover 102 and the housing body 101, the housing cover 102 of the embodiment of the present application includes a bottom plate 1021 and a sealing side plate 1022, and the sealing side plate 1022 is connected to the bottom plate 1021. After the sealing side plate 1022 is inserted into the housing body 101, the outer peripheral surface of the sealing side plate 1022 is in close contact with the inner wall of the housing body, thereby achieving the sealing connection between the housing cover 102 and the housing body 101. Preferably, a positioning column 51 is provided on the bottom plate 1021.

[0044] The pure water countercurrent device of the embodiment of the present application can reduce the concentration at the concentrated water end of the RO filter element through the countercurrent of pure water, reduce or inhibit the forward osmosis phenomenon, thereby reducing the TDS value of the first glass of water, and the effect is better.

[0045] Embodiment Two:

[0046] The following is a detailed description of this embodiment with reference to Embodiment One:

[0047] As Figure 4 shown, the embodiment of the present application provides a pure water countercurrent flushing system, which at least includes: an RO filter element 8, the water inlet of the RO filter element 8 is connected to an external water source; a concentrated water outlet pipe 9, one end of which is connected to the concentrated water outlet end of the RO filter element 8, and a concentrated water solenoid valve 10 is provided on the concentrated water outlet pipe 9; a first pure water pipe 11, one end of the first pure water pipe 11 is connected to the pure water outlet of the RO filter element 8, the other end of the first pure water pipe 11 is connected to a pure water faucet 12, and a first solenoid valve 13 and a three-way valve 14 are provided on the first pure water pipe 11, and the first solenoid valve 13 is located between the three-way valve 14 and the pure water faucet 12; and the pure water countercurrent device as described in Embodiment One, the countercurrent channel 2 of the pure water countercurrent device is connected to one of the outlets of the three-way valve 14.

[0048] Furthermore, the pure water countercurrent flushing system further includes a PPC filter element assembly 15, and the PPC filter element assembly 15 includes a pre-filter element 151 and a post-filter element 152. The water inlet of the pre-filter element 151 is connected to an external water source, the pure water outlet of the pre-filter element 151 is connected to the water inlet of the RO filter element 8 through a second pure water pipe 16, and a second solenoid valve 17 and a booster pump 18 are provided on the second pure water pipe 16. The pure water outlet of the RO filter element 8 is connected to the water inlet of the post-filter element 152 through the first pure water pipe 11, and the pure water outlet of the post-filter element 152 is connected to the pure water faucet 12.

[0049] Both the above-mentioned RO filter element 8 and PPC filter element assembly 15 are filter elements currently used in the market, and there is no improvement in the structures of the RO filter element 8 and PPC filter element assembly 15.

[0050] There are three modes in the pure water countercurrent flushing system according to the embodiments of this application, namely, the water production mode, the energy storage mode, and the countercurrent mode, where:

[0051] Water production mode:

[0052] In the water production mode, when the pure water faucet 12 is opened, the first solenoid valve 13, the second solenoid valve 17, and the booster pump 18 are all turned on. The external tap water first enters the pre-filter 151, and the pure water filtered by the pre-filter 151 is transported to the RO filter element 8 for filtration after passing through the second solenoid valve 17 and the booster pump 18. The pure water filtered by the RO filter element 8 is transported to the post-filter 152 through the first pure water pipe 11 for further filtration, and the pure water filtered by the post-filter 152 enters the pure water faucet 12 to produce pure water.

[0053] When the RO filter element 8 filters the pure water, the concentrated water discharged by the RO filter element 8 directly discharges through the concentrated water hole of the concentrated water solenoid valve 10.

[0054] Energy storage mode:

[0055] The pure water faucet 12 is closed, the first solenoid valve 13 is closed, the second solenoid valve 17 and the booster pump 18 are both turned on. The external tap water first enters the pre-filter 151, and the pure water filtered by the pre-filter 151 is transported to the RO filter element 8 for filtration after passing through the second solenoid valve 17 and the booster pump 18. The pure water filtered by the RO filter element 8 enters the pure water countercurrent device through the three-way valve 14, that is, enters the countercurrent housing 1 through the countercurrent channel 2. As Figure 2 shown, after the pure water enters the countercurrent housing 1, under the action of the water pressure, it pushes the pressure plate 3, and the pressure plate 3 compresses the spring for energy storage.

[0056] In the energy storage mode, the concentrated water solenoid valve 10 can be turned on, and the concentrated water discharged by the RO filter element 8 directly discharges through the concentrated water outlet pipe 9.

[0057] The operation time of the energy storage mode is 60S, and the water production stops after the energy storage mode ends.

[0058] Countercurrent mode:

[0059] After the energy storage mode ends, the concentrated water solenoid valve 10 is turned on, and the first solenoid valve 13, the second solenoid valve 17, and the booster pump 18 are all turned off. As Figure 3As shown in the figure, after the pure water countercurrent flushing system stops making water, the elastic member 4 extends. Under the action of the elastic force of the elastic member 4 and the atmospheric pressure, the pure water is extruded from the countercurrent housing 1 to the concentrated water end of the RO filter element 8. When the concentrated water solenoid valve 10 is opened, the concentrated water is discharged, thereby reducing the concentration at the concentrated water end of the RO filter element 8 and reducing or suppressing the phenomenon of forward osmosis.

[0060] In the embodiment of the present application, by providing a pure water countercurrent device in the pure water countercurrent flushing system and matching with a simple water circuit design, the pure water entering the pure water countercurrent device can flow countercurrently to the concentrated water end of the RO filter element 8 in the countercurrent mode, thereby reducing the concentration of the concentrated water at the concentrated water end of the RO filter element 8, slowing down or suppressing the phenomenon of forward osmosis, and thus achieving the effect of reducing the TDS value of the first glass of water.

[0061] In the pure water countercurrent flushing system, the opening and closing of the first solenoid valve 13, the second solenoid valve 17, the booster pump 18 and the concentrated water solenoid valve 10 can all be automatically controlled by the electronic control board.

[0062] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0063] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of these features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0064] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of various changes or substitutions, and these should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A pure water countercurrent device, characterized in that, Comprising: A countercurrent housing, one end of the countercurrent housing having a countercurrent channel which is in communication with the interior of the countercurrent housing, the countercurrent channel being adapted to communicate with the pure water outlet of the RO filter element; A pressing plate disposed within the countercurrent housing, an outer peripheral surface of the pressing plate being sealingly connected to an inner wall of the countercurrent housing; An elastic member disposed within the countercurrent housing, the elastic member abutting against the pressing plate, the pressing plate being located between the elastic member and the countercurrent channel, and the pressing plate being movable between the countercurrent channel and the elastic member.

2. The pure water countercurrent device according to claim 1, wherein The pure water countercurrent device further comprises: A positioning assembly, the positioning assembly including two positioning posts, one of the positioning posts being fixed to the pressing plate, the other positioning post being fixed to the countercurrent housing, and the two positioning posts being oppositely disposed, with two ends of the elastic member respectively sleeved on the two positioning posts.

3. The pure water countercurrent device according to claim 2, characterized in that, The number of the positioning assemblies and the elastic members is four each, two ends of the four elastic members being respectively sleeved on the positioning posts of the corresponding positioning assemblies, and the four positioning assemblies being evenly distributed around the center of the pressing plate.

4. The pure water countercurrent device according to any one of claims 1 to 3, characterized in that, The pure water countercurrent device further comprises a first sealing assembly disposed on an outer peripheral surface of the pressing plate, and the pressing plate is sealingly connected to the inner wall of the countercurrent housing through the first sealing assembly.

5. The pure water countercurrent device according to claim 4, characterized in that, The first sealing assembly includes a first sealing groove and a first sealing ring, the first sealing groove being disposed on the outer peripheral surface of the pressing plate, the first sealing ring being installed in the first sealing groove, and the first sealing groove being sealingly connected to the inner wall of the countercurrent housing through the first sealing ring.

6. The pure water countercurrent device according to any one of claims 1 to 3, characterized in that The countercurrent housing includes a housing main body and a housing cover, the housing cover being sealingly connected to the housing main body, the housing cover having a countercurrent post, and the countercurrent channel being located inside the countercurrent post.

7. The pure water countercurrent device according to claim 6, characterized in that, The housing cover includes a bottom plate and a sealing side plate, the sealing side plate being connected to the bottom plate; after the sealing side plate is inserted into the interior of the housing main body, an outer peripheral surface of the sealing side plate is closely attached to the inner wall of the housing main body.

8. The pure water countercurrent device according to any one of claims 1 to 3, characterized in that, The elastic member is a spring.

9. The pure water countercurrent rinsing system is characterized in that, At least including: An RO filter element, an inlet of the RO filter element being in communication with an external water source; A concentrated water outlet pipe, one end of which is in communication with a concentrated water outlet end of the RO filter element, and a concentrated water solenoid valve being disposed on the concentrated water outlet pipe; A first pure water pipe, one end of the first pure water pipe being in communication with the pure water outlet of the RO filter element, the other end of the first pure water pipe being in communication with a pure water faucet, and a first solenoid valve and a three-way valve being disposed on the first pure water pipe, the first solenoid valve being located between the three-way valve and the pure water faucet; and The pure water countercurrent device according to any one of claims 1 to 8, a countercurrent channel of the pure water countercurrent device being in communication with one of the outlets of the three-way valve.

10. The pure water countercurrent rinsing system according to claim 9, characterized in that, The pure water countercurrent flushing system further comprises: The PPC filter element assembly includes a pre-filter element and a post-filter element. The water inlet of the pre-filter element is connected to an external water source. The pure water outlet of the pre-filter element is connected to the water inlet of the RO filter element through a second pure water pipe. A second solenoid valve and a booster pump are provided on the second pure water pipe. The pure water outlet of the RO filter element is connected to the water inlet of the post-filter element through the first pure water pipe. The pure water outlet of the post-filter element is connected to the pure water faucet.

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