Rear filter element and water purification equipment

Abstract

The present invention discloses a post-filter element and a water purification device. The post-filter element includes: a filter bottle that defines a filter chamber, and the filter bottle integrally forms a first water pipe and a second water pipe; a filter medium that is disposed in the filter chamber, thereby dividing the filter chamber into a water inlet passage and a water outlet passage. The inlet of the first water pipe is communicated with the pure water outlet of a reverse osmosis filter element, the outlet of the first water pipe is communicated with the water inlet passage, and the inlet of the second water pipe is communicated with the water outlet passage. According to the post-filter element of the embodiment of the present invention, by integrally forming the first water pipe and the second water pipe on the filter bottle, it is convenient for the connection and conversion of the inlet and outlet water paths of the post-filter element, reduces the use of water path conversion joints, and lowers the manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification, and more specifically, to a post-filter element and a water purification device. Background Art

[0002] At present, water purification devices on the market usually include two or more filter elements. The waterway connections between the filter elements and between the filter elements and the outside are usually made by waterway adapters and PE pipes. Due to the complex waterways, a water purification device often requires a very large number of waterway adapters, resulting in a very chaotic internal pipeline of the water purification device, and installation and maintenance are also very difficult. Summary of the Invention

[0003] The present invention aims to solve at least one of the above technical problems to some extent.

[0004] To this end, the present invention provides a post-filter element, which has convenient pipeline connection, reduces the use of waterway adapters, and reduces the manufacturing cost.

[0005] The present invention also provides a water purification device with the above post-filter element, which has simple waterway connection and low manufacturing cost.

[0006] The post-filter element according to an embodiment of the present invention includes: a filter bottle that defines a filter cavity, and the filter bottle integrally forms a first water pipe and a second water pipe; a filter medium that is disposed in the filter cavity, thereby dividing the filter cavity into a water inlet channel and a water outlet channel. The inlet of the first water pipe is communicated with the pure water outlet of the reverse osmosis filter element, the outlet of the first water pipe is communicated with the water inlet channel, and the inlet of the second water pipe is communicated with the water outlet channel.

[0007] According to the post-filter element of the embodiment of the present invention, by integrally forming the first water pipe and the second water pipe on the filter bottle, it is convenient for the connection and conversion of the inlet and outlet waterways of the post-filter element, reduces the use of waterway adapters, and reduces the manufacturing cost.

[0008] In addition, the post-filter element according to the embodiment of the present invention may further have the following additional technical features:

[0009] In some embodiments of the present invention, the filter bottle further integrally forms a third water pipe, and the third water pipe is communicated with the concentrated water outlet of the reverse osmosis filter element.

[0010] In an alternative embodiment, the third water pipe includes a first section and a second section connected in sequence, wherein the first water pipe and the first section of the third water pipe extend along a first direction X, and the second water pipe and the second section of the third water pipe extend along a second direction Y.

[0011] In a further optional embodiment, a fourth water pipe is integrally formed on the filter bottle, the fourth water pipe communicates with the first water pipe, and the fourth water pipe is connected to the pressure tank.

[0012] In an optional embodiment, the extending direction of the fourth water pipe is the same as that of the second water pipe.

[0013] In a further optional embodiment, a fifth water pipe is integrally formed on the filter bottle, the fifth water pipe communicates with the first water pipe, and the high-pressure switch is connected to the fifth water pipe.

[0014] In an optional example, the first water pipe, the second water pipe, the third water pipe, the fourth water pipe and the fifth water pipe are all arranged at the bottom of the filter bottle.

[0015] In a further optional example, a sixth water pipe and a seventh water pipe are integrally formed on the filter bottle. One of the sixth water pipe and the seventh water pipe is connected to the concentrated water outlet of the reverse osmosis filter element, and the other is connected to the inlet of the third water pipe. A flushing solenoid valve is arranged between the sixth water pipe and the seventh water pipe.

[0016] In an optional embodiment, the sixth water pipe and the seventh water pipe are arranged at intervals up and down on the outer side wall of the filter bottle.

[0017] In a further optional example, a sheath is provided at the free end of the first water pipe, the second water pipe, the third water pipe, the fourth water pipe and the fifth water pipe, and the sheath is arranged at intervals from the outer walls of the first water pipe, the second water pipe, the third water pipe, the fourth water pipe and the fifth water pipe.

[0018] The water purification device according to the embodiment of the invention includes the post-filter element of the above embodiment. Since the inlet and outlet water paths of the post-filter element according to the embodiment of the invention are simply and clearly connected and easy to disassemble and assemble, the water path connection of the water purification device according to the embodiment of the invention is convenient and easy to disassemble and assemble.

[0019] Some additional aspects and advantages of the present invention will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0020] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is an exploded view of a post-filter element in some embodiments according to the present invention;

[0022] Figure 2Cross-sectional view of a post-filter according to some embodiments of the present invention;

[0023] Figure 3 Schematic structural view of a post-filter from one angle according to some embodiments of the present invention;

[0024] Figure 4 Schematic structural view of a post-filter from another angle according to some embodiments of the present invention;

[0025] Figure 5 Partial cross-sectional view of a post-filter according to some embodiments of the present invention;

[0026] Figure 6 is Figure 5 Cross-sectional view along line C-C;

[0027] Figure 7 Schematic structural view of a post-filter from another angle according to some embodiments of the present invention;

[0028] Figure 8 Schematic structural view of a post-filter from another angle according to some embodiments of the present invention;

[0029] Figure 9 Schematic structural view of a post-filter from another angle according to some embodiments of the present invention;

[0030] Figure 10 Partial cross-sectional view of a post-filter according to some embodiments of the present invention;

[0031] Figure 11 Partial cross-sectional view of a post-filter according to some embodiments of the present invention.

[0032] Reference numerals:

[0033] Post-filter 100;

[0034] Filter bottle 10; filter cavity 11; water inlet channel 111; water outlet channel 112; first water pipe 12; second water pipe 13; third water pipe 14; first section 141; second section 142; fourth water pipe 15; fifth water pipe 16; sixth water pipe 17; seventh water pipe 18; bottle body 191; bottle cap 192; sheath 193;

[0035] Filter medium 20;

[0036] Flushing solenoid valve 40. Detailed description of the invention

[0037] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] Next, with reference to Figures 1 - 11 , the post-filter element 100 according to an embodiment of the present invention will be described. The post-filter element 100 includes a filter bottle 10 and a filter medium 20 disposed inside the filter bottle 10. Among them, the filter medium 20 can be a PP cotton, a carbon rod, etc. The post-filter element 100 is applied to a water purification device, and the water inlet of the post-filter element 100 is connected to the pure water outlet of a reverse osmosis filter element (not shown in the figure) in the water purification device.

[0039] Specifically, as Figure 2 shown, the filter bottle 10 defines a filter cavity 11, and the filter medium 20 is disposed inside the filter cavity 11. The filter medium 20 divides the filter cavity 11 into a water inlet channel 111 and a water outlet channel 112. The pure water filtered by the reverse osmosis filter element enters the water inlet channel 111 of the filter cavity 11, and after being filtered again by the filter medium 20, it flows out from the water outlet channel 112 and becomes drinking water.

[0040] The filter bottle 10 integrally forms a first water pipe 12 and a second water pipe 13. Among them, the inlet of the first water pipe 12 is communicated with the pure water outlet of the reverse osmosis filter element, the outlet of the first water pipe 12 is communicated with the water inlet channel 111, and the inlet of the second water pipe 13 is communicated with the water outlet channel 112. That is, the pure water is introduced into the post-filter element 100 through the first water pipe 12, and the water filtered again by the post-filter element 100 is led out through the second water pipe 13. In other words, the first water pipe 12 and the second water pipe 13 are integrated on the filter bottle 10, which is used to connect the water path between the reverse osmosis filter element and the post-filter element 100 and lead out the drinking water. In order to improve the connection efficiency of the pipeline, the names of the water paths can be marked on the first water pipe 12 and the second water pipe 13.

[0041] The water path connection efficiency between the post-filter element 100 and the reverse osmosis filter element is improved through the first water pipe 12 and the second water pipe 13, and the use of PE pipes and water path conversion joints is reduced.

[0042] Thus, for the post-filter element 100 according to an embodiment of the present invention, by integrally forming the first water pipe 12 and the second water pipe 13 on the filter bottle 10, it is convenient for the connection and conversion of the inlet and outlet water paths of the post-filter element 100, reduces the use of water path conversion joints, and reduces the manufacturing cost.

[0043] In some embodiments of the present invention, such as Figure 1 , Figures 9 - 11, the filter bottle 10 also integrally forms a third water pipe 14, and the third water pipe 14 communicates with the concentrated water outlet of the reverse osmosis filter element. That is to say, the third water pipe 14 of the post-filter 100 functions to draw out the concentrated water in the reverse osmosis filter element. In other words, the concentrated water of the reverse osmosis filter element is discharged externally through the third water pipe 14. In this embodiment, the filter bottle of the post-filter 100 integrally sets the first water pipe 12, the second water pipe 13 and the third water pipe 14. The pure water outlet of the reverse osmosis filter element is connected to the first water pipe 12, and the concentrated water outlet of the reverse osmosis filter element is connected to the third water pipe 14. The flow path of the concentrated water of the reverse osmosis filter element is transferred to the post-filter 100 through the third water pipe 14 and is externally conveyed through the post-filter 100, that is, both the output of the concentrated water and the drinking water are sent out from the post-filter 100, simplifying the connection path of the pipeline and facilitating the connection of the pipeline.

[0044] In an alternative embodiment, such as Figure 1 , Figures 9 - 11 , the third water pipe 14 includes a first section 141 and a second section 142 connected in sequence. Among them, the first water pipe 12 and the first section 141 of the third water pipe 14 extend along the first direction X, and the second water pipe 13 and the second section 142 of the third water pipe 14 extend along the second direction Y. That is, the pure water enters the filter cavity 11 of the post-filter 100 from the first direction X, and after being filtered by the post-filter 100, it is externally output from the second direction Y. Similarly, the waste water enters the third water pipe 14 from the first direction X and is externally output from the second direction Y. That is to say, the first water pipe 12, the second water pipe 13 and the third water pipe 14 of the post-filter 100 convert the flow directions of the pure water water path and the concentrated water water path of the reverse osmosis filter element. In other words, according to the internal pipeline connection situation of the water purification device, the distribution directions of the first water pipe 12, the second water pipe 13 and the third water pipe 14 can be designed, so that the internal pipeline distribution of the water purification device is clear and convenient for pipeline disassembly and assembly.

[0045] In an alternative embodiment, such as Figure 1 , Figure 4 , Figure 6 , Figures 9 - 11 , the filter bottle 10 also integrally forms a fourth water pipe 15, and the fourth water pipe 15 communicates with the first water pipe 12, and the fourth water pipe 15 is connected to a pressure tank (not shown in the figure). In this embodiment, the first water pipe 12 simultaneously sends pure water to the fourth water pipe 15 and the water inlet channel 111 of the filter cavity 11. In other words, during the water production process of the water purification device, the pure water can flow into the pressure tank for storage. In this way, during the water production process, the pure water pre-stored in the pressure tank can be reversely conveyed into the water inlet channel 111 to ensure that the water purification device outputs a large enough flow of drinking water.

[0046] Those skilled in the art can understand that the fourth water bypass pipe 15 in this embodiment is an optional solution. For high-flux models, the fourth water bypass pipe 15 can be in a disconnected state, that is, pure water is not stored in the pressure tank. For low-flux models, the fourth water bypass pipe 15 can be in a conducting state. When the user does not use water, the water purification device maintains the water production state and pre-stores pure water in the pressure tank; when the user uses water, sufficient water volume can be maintained to supply water externally. Among them, the pressure tank can be selected to be external, that is, not installed inside the water purification device, and pure water is transported to the pressure tank through the fourth water bypass pipe.

[0047] Further optionally, as Figure 1 and Figure 9 shown, the extending direction of the fourth water bypass pipe 15 is the same as that of the second water bypass pipe 13. In this embodiment, the second water bypass pipe 13, the second section 142 of the third water bypass pipe 14, and the fourth water bypass pipe 15 all extend in the second direction Y. In other words, the outlets of the second water bypass pipe 13, the third water bypass pipe 14, and the fourth water bypass pipe 15 are all located on the same side of the filter bottle 10. Thus, it is convenient for the post-filter 100 to connect external pipes, simplifies the pipeline connection path, improves the disassembly and assembly efficiency, and facilitates the inspection of water leakage points.

[0048] In an alternative embodiment, a fifth water bypass pipe 16 is integrally formed on the filter bottle 10. The fifth water bypass pipe 16 communicates with the first water bypass pipe 12, and the high-pressure switch is connected to the fifth water bypass pipe 16. That is, the fifth water bypass pipe 16 is integrated on the filter bottle 10, and the water pressure of the fifth water bypass pipe 16 is the same as that of the first water bypass pipe 12. In this way, the high-pressure switch assembled on the fifth water bypass pipe 16 can accurately monitor the water pressure of the pure water waterway, and the water purification device judges whether to produce water according to the monitoring signal of the pressure switch. In this embodiment, because the fifth water bypass pipe 16 communicating with the first water bypass pipe 12 is integrally provided on the filter bottle 10, the high-pressure switch can be assembled on the post-filter 100, solving the problem of the installation position of the high-pressure switch and making the distribution of the internal components of the water purification device more reasonable and orderly.

[0049] Further optionally, the extending direction of the fifth water bypass pipe 16 is the same as that of the first water bypass pipe 12. In this embodiment, the first water bypass pipe 12, the first section 141 of the third water bypass pipe 14, and the fifth water bypass pipe 16 all extend along the first direction X. In other words, the water inlet sides of the respective waterways of the post-filter 100 are located on one side of the filter bottle 10, and the water outlet sides of the respective waterways of the post-filter 100 are located on the other side of the filter bottle 10. Thus, the inlet and outlet waterways of the post-filter are reasonably distributed and arranged, further simplifying the pipeline connection path, improving the disassembly and assembly efficiency, and facilitating the inspection of water leakage points.

[0050] In a further alternative example, as Figures 1 - 5 、 Figures 7 - 10, the first water pipe 12, the second water pipe 13, the third water pipe 14, the fourth water pipe 15 and the fifth water pipe 16 are all arranged at the bottom of the filter bottle 10. That is to say, the inlet and outlet water paths of the post-filter element 100 are both arranged at the bottom of the filter bottle 10. In this way, it is more convenient to connect the inlet and outlet water path pipes of the post-filter element 100, making the pipe layout more orderly.

[0051] In a further alternative example, such as Figures 1 - 5 , Figures 7 - 10 , the filter bottle 10 is also integrally formed with a sixth water pipe 17 and a seventh water pipe 18. One of the sixth water pipe 17 and the seventh water pipe 18 is connected to the concentrated water outlet of the reverse osmosis filter element, and the other is connected to the inlet of the third water pipe 14. A flushing solenoid valve 40 is provided between the sixth water pipe 17 and the seventh water pipe 18. Those skilled in the art can understand that the concentrated water flow path formed by the sixth water pipe 17 and the seventh water pipe 18 is an alternative solution. When the reverse osmosis filter element has a normally open concentrated water outlet, the on-off of the concentrated water water path can be controlled without passing through the flushing solenoid valve 40. At this time, no water flows through the concentrated water flow path formed by the sixth water pipe 17 and the seventh water pipe 18. When the reverse osmosis filter element does not have a normally open concentrated water outlet, the discharge speed of the concentrated water can be adjusted by adjusting the opening degree of the flushing solenoid valve 40. Generally, for small-flux models, a flushing solenoid valve can be used to control the opening degree of the concentrated water water path.

[0052] In a specific example, the sixth water pipe 17 and the seventh water pipe 18 are arranged at intervals up and down on the outer wall of the filter bottle 10. Thus, the alternative concentrated water water path can be separated from the common concentrated water path, making the pipe layout of the post-filter element 100 clearer, improving the disassembly and assembly efficiency of the pipes, and reducing the error rate.

[0053] Optionally, the free ends of the first water pipe 12, the second water pipe 13, the third water pipe 14, the fourth water pipe 15 and the fifth water pipe 16 are provided with a sheath 193, and the sheath 193 is spaced from the outer walls of the first water pipe 12, the second water pipe 13, the third water pipe 14, the fourth water pipe 15 and the fifth water pipe 16.

[0054] The sheath 193 can separate the ends of the first water pipe 12, the second water pipe 13, the third water pipe 14, the fourth water pipe 15 and the fifth water pipe 16 from other components, preventing them from being knocked and broken by other hard objects during use and affecting the normal connection of the pipes. It can be understood that the form of the sheath 193 can be diverse to meet the connection and installation of various components.

[0055] In an alternative embodiment, the filter bottle 10 includes a bottle body 191 and a bottle cap 192, and the bottle body 191 is detachably connected to the bottle cap 192. That is, the bottle body 191 and the bottle cap 192 are detachably connected. Thus, when the filter medium 20 reaches the specified service life, the bottle cap 192 can be unscrewed to replace the filter element. It should be noted that during the process of replacing the filter medium 20, only the bottle cap 192 needs to be unscrewed, and there is no need to separate the bottle body 191 from the middle shell of the water purification device. To ensure the connection strength between the bottle body 191 and the middle shell, one end of the bottle body 191 is snap-connected to the middle shell, and the other end is locked to the middle shell by screws.

[0056] The water purification device according to an embodiment of the invention includes the post-filter element 100 of the above embodiment. Since the water inlet and outlet water paths of the post-filter element 100 according to the embodiment of the invention are simply and clearly connected and easy to disassemble and assemble, the water path connection of the water purification device according to the embodiment of the invention is convenient and easy to disassemble and assemble.

[0057] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "bottom", "top", "inner", "outer", "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0058] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "above", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "below", and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature is at a lower horizontal height than the second feature.

[0060] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc., mean 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 invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0061] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and purposes of the present invention.

Claims

1. A rear filter element, characterized in that, Comprising: A filter bottle, the filter bottle including a bottle body and a bottle cap, the bottle body being detachably connected to the bottle cap, the filter bottle defining a filter cavity, and the filter bottle integrally forming a first water pipe and a second water pipe; A filter medium, the filter medium being disposed inside the filter cavity, thereby separating the filter cavity into a water inlet channel and a water outlet channel, an inlet of the first water pipe being communicated with a pure water outlet of a reverse osmosis filter element, an outlet of the first water pipe being communicated with the water inlet channel, and an inlet of the second water pipe being communicated with the water outlet channel; The filter bottle further integrally forms a third water pipe, the third water pipe being communicated with a concentrated water outlet of a reverse osmosis filter element.

2. The post-filter according to claim 1, characterized in that, The third water pipe includes a first section and a second section connected in sequence, wherein the first water pipe and the first section of the third water pipe extend along a first direction (X), and the second water pipe and the second section of the third water pipe extend along a second direction (Y).

3. The post-filter according to claim 2, characterized in that The filter bottle further integrally forms a fourth water pipe, the fourth water pipe being communicated with the first water pipe, and the fourth water pipe being connected to a pressure tank.

4. The post-filter according to claim 3, wherein The extending direction of the fourth water pipe is the same as the extending direction of the second water pipe.

5. The post-filter according to claim 3, characterized in that, The filter bottle further integrally forms a fifth water pipe, the fifth water pipe being communicated with the first water pipe, and a high-pressure switch being connected to the fifth water pipe.

6. The post-filter according to claim 5, characterized in that, The extending direction of the fifth water pipe is the same as the extending direction of the first water pipe.

7. The post-filter according to claim 6, characterized in that, The first water pipe, the second water pipe, the third water pipe, the fourth water pipe, and the fifth water pipe are all disposed at the bottom of the filter bottle.

8. The post-filter according to claim 7, wherein The filter bottle further integrally forms a sixth water pipe and a seventh water pipe, one of the sixth water pipe and the seventh water pipe being connected to a concentrated water outlet of a reverse osmosis filter element, the other being connected to an inlet of the third water pipe, and a flushing solenoid valve being disposed between the sixth water pipe and the seventh water pipe.

9. The post-filter according to claim 8, wherein The sixth water pipe and the seventh water pipe are arranged at intervals up and down on an outer side wall of the filter bottle.

10. The post-filter according to claim 5, characterized in that, Sheaths are provided at free ends of the first water pipe, the second water pipe, the third water pipe, the fourth water pipe, and the fifth water pipe, and the sheaths are spaced apart from outer walls of the first water pipe, the second water pipe, the third water pipe, the fourth water pipe, and the fifth water pipe.

11. A water purification device, characterized in that, Including the post-filter element according to any one of claims 1-10.

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