Filter device and water purifier

Abstract

The present invention relates to the technical field of water purification, and discloses a filtering device and a water purifier. The water purifier includes a filtering device, the filtering device including a filter bottle, a filter element, and a water separation sleeve. The filter bottle includes an integrally formed bottle body and an end cap. The end cap is provided with a raw water inlet, a clean water outlet, and a concentrated water outlet. The filter element is disposed in the filter bottle. The filter element includes a filter layer and a clean water pipe. One end of the clean water pipe extends from the inside of the filter layer to the outside of the filter layer. The water separation sleeve includes an end plate, an inner sleeve and an outer sleeve disposed on one side of the end plate. The filter layer is plugged into the outer sleeve. The clean water pipe is plugged into the inner sleeve. The end plate is provided with a first outlet and a second outlet. The raw water inlet communicates with a gap formed between the filter bottle and the filter element body. The first outlet communicates with the inner sleeve and the clean water outlet. The second outlet communicates with the concentrated water outlet and the space between the inner sleeve and the outer sleeve. The outer wall of the outer sleeve is constructed with circumferentially extending limiting ribs. The limiting ribs abut against the inner wall of the bottle body. The limiting ribs are provided with notches communicating with the raw water inlet and the gap.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification, and in particular to a filtering device and a water purifier. Background Art

[0002] As the quality of life continues to improve, people's requirements for the cleanliness of drinking water are also increasing, so water purifiers have been widely used. The water purifier includes a filtering device, which includes a filter bottle and a filter element arranged in the filter bottle. After the raw water enters the filter bottle, it is filtered by the filter element to form clean water and concentrated water, and the clean water and concentrated water need to be diverted by means of a water diversion sleeve and discharged from the outlet on the filter bottle. For a cylindrical filter element, clean water flows out from the center of the filter element, and concentrated water flows out from the edge of the filter element. That is to say, the diversion sleeve must be accurately matched with the filter bottle to effectively separate and guide out the raw water, concentrated water and clean water. Therefore, the connection structure between the filter bottle, the diversion sleeve and the filter element of the filtering device in the prior art is complicated, and the effect of separating water is not good.

[0003] Therefore, there is an urgent need for a filtering device and a water purifier to solve the above technical problems. Summary of the Invention

[0004] An object of the present invention is to provide a filtering device with a simple structure and good water separation effect for various water components.

[0005] Another object of the present invention is to provide a filter which, by providing the above-mentioned filtering device, has a simple structure and good water purification effect.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A filtering device comprising:

[0008] The filter bottle comprises an integrally formed bottle body and an end cover, wherein the end cover is provided with a raw water inlet, a purified water outlet and a concentrated water outlet;

[0009] A filter element is disposed in the filter bottle, the filter element comprising a filter layer and a clean water pipe, wherein a first end of the clean water pipe extends from an interior of the filter layer to an exterior of the first end of the filter layer; and

[0010] The water distribution sleeve includes an end plate, an inner sleeve and an outer sleeve are provided on a first side of the end plate, the inner sleeve is located inside the outer sleeve, the filter layer is sealed and plugged into the outer sleeve, the first end of the clean water pipe is sealed and plugged into the inner sleeve, and the end plate is provided with a first outlet and a second outlet;

[0011] The raw water inlet is connected to the gap formed by the filter bottle and the filter element body, the first outlet is connected to the inner sleeve and the clean water outlet, and the second outlet is connected to the concentrated water outlet, the space between the inner sleeve and the outer sleeve;

[0012] A circumferentially extending limiting rib is further constructed on the outer side wall of the outer sleeve, and the limiting rib abuts against the inner wall of the bottle body. A notch is provided on the limiting rib, and the notch communicates with the raw water inlet and the gap.

[0013] Preferably, a first tube column and a second tube column are constructed on the end cover, the clean water outlet is connected to the first tube column, and the concentrated water outlet is connected to the second tube column;

[0014] A third tube string and a fourth tube string are configured on the second side of the end plate, the first outlet is communicated with the third tube string, and the second outlet is communicated with the fourth tube string;

[0015] The first pipe string and the third pipe string are sealed and connected, and the second pipe string and the fourth pipe string are sealed and connected.

[0016] Preferably, the raw water inlet, the purified water outlet and the concentrated water outlet are distributed in a triangle.

[0017] Preferably, the third pipe string and the fourth pipe string are eccentrically arranged relative to the inner sleeve;

[0018] The third pipe column includes a first extension portion extending through the end plate and sealingly connected to the circumferential outer side wall of the inner sleeve, and the first outlet is formed on the circumferential inner side wall of the inner sleeve and communicates with the first extension portion;

[0019] The fourth pipe column includes a second extension portion extending through the end plate and sealedly connected to the circumferential inner wall of the inner sleeve. The second outlet is formed on the circumferential outer wall of the inner sleeve and communicates with the second extension portion.

[0020] Preferably, the first end of the water purification pipe abuts against the first extension portion and / or the second extension portion.

[0021] Preferably, the raw water inlet, the clean water outlet and the concentrated water outlet are distributed in a straight line.

[0022] Preferably, the first pipe string, the third pipe string and the inner sleeve are coaxially arranged, and the third pipe string extends to the inner side of the inner sleeve and is connected to the first end of the water purification pipe;

[0023] The second outlet is disposed between the inner sleeve and the outer sleeve.

[0024] Preferably, the third pipe string is sealed and plugged into the first pipe string, and the end face of the first pipe string abuts against the end plate; and / or

[0025] The fourth pipe column is sealed and plugged into the second pipe column, and the end surface of the second pipe column abuts against the end plate.

[0026] Preferably, the filter bottle further comprises a base, which is sealed at an end of the bottle body away from the end cover.

[0027] Preferably, a mounting sleeve is provided on the inner side of the base, the second end of the clean water pipe extends from the inside of the filter layer to the outside of the second end of the filter layer, and the second end of the clean water pipe is plugged into the mounting sleeve.

[0028] Preferably, a guide rib extending in the axial direction is further constructed on the outer side wall of the outer sleeve, and a guide protrusion matching the guide rib is constructed on the inner side wall of the bottle body, and the guide rib and the guide protrusion are axially slidably matched together.

[0029] Preferably, the depth of the outer sleeve is greater than the depth of the inner sleeve.

[0030] Preferably, a reinforcing rib is connected between the outer sleeve and the inner sleeve.

[0031] A water purifier comprises the filtering device.

[0032] The beneficial effects of the present invention are:

[0033] In the filter device of the present invention, the filter element is arranged in the filter bottle, the clean water pipe of the filter element is limited to the inner sleeve of the water separation sleeve, and the filter layer is limited to the outer sleeve of the water separation sleeve. Therefore, the outer sleeve of the water separation sleeve can separate the position at the edge of the filter element for discharging concentrated water from the channel for raw water to enter, and the inner sleeve can separate the area in the middle of the filter element for discharging clean water from the area at the edge for discharging concentrated water. The structure is simple and the separation effect is good; the limiting ribs on the outer sleeve abut and cooperate with the inner wall of the bottle body to ensure the position stability of the water separation sleeve, thereby further ensuring the effective separation of clean water and concentrated water; and the end cover and the bottle body of the filter bottle are set as an integrally formed structure, which can eliminate the sealing components and connecting components between the bottle body and the end cover, thereby further simplifying the structure and assembly difficulty of the filter device. The filter device of the present invention has a simple structure and a good water separation effect for each component of water.

[0034] The filter of the present invention has a simple structure and good water purification effect by being provided with the above-mentioned filtering device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of the structure of the filtering device provided in Example 1 of the present invention;

[0036] Figure 2 This is a schematic diagram of the hidden structure of the filtering device provided in Example 1 of the present invention. Figure 1 ;

[0037] Figure 3 This is a schematic diagram of the hidden structure of the filtering device provided in Example 1 of the present invention. Figure 2 ;

[0038] Figure 4This is a schematic structural diagram of the water diversion sleeve provided in the first embodiment of the present invention at one viewing angle;

[0039] Figure 5 This is a schematic structural diagram of the water diversion sleeve provided in the first embodiment of the present invention from another perspective;

[0040] Figure 6 This is a schematic structural diagram of the filter bottle with the base removed provided by the first embodiment of the present invention;

[0041] Figure 7 is a schematic structural diagram of a filtering device provided in Example 2 of the present invention;

[0042] Figure 8 This is a schematic diagram of the hidden structure of the filtering device provided in the second embodiment of the present invention. Figure 1 ;

[0043] Figure 9 This is a schematic diagram of the hidden structure of the filtering device provided in the second embodiment of the present invention. Figure 2 ;

[0044] Figure 10 It is a structural schematic diagram of the water distribution jacket provided in the second embodiment of the present invention.

[0045] In the picture:

[0046] 1-filter bottle; 11-bottle body; 111-guide protrusion; 12-end cover; 121-first tubing string; 122-second tubing string; 123-fifth tubing string; 124-raw water inlet; 125-clean water outlet; 126-concentrated water outlet; 13-base; 131-mounting sleeve;

[0047] 2- filter element; 21- filter layer; 22- water purification pipe;

[0048] 3-water distribution jacket; 31-end plate; 311-third pipe column; 3111-first extension; 312-fourth pipe column; 3121-second extension; 313-first outlet; 314-second outlet; 32-inner sleeve; 33-outer sleeve; 34-limiting rib; 35-reinforcement rib; 36-guide rib; 37-notch;

[0049] 41-first sealing member; 42-second sealing member;

[0050] 5-gap;

[0051] 6- Water diversion seal. DETAILED DESCRIPTION

[0052] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0053] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0054] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0055] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0056] Example 1

[0057] This embodiment provides a filtering device and a water purifier, wherein the water purifier includes a filtering device. Specifically, the water purifier may include one or more filtering devices connected in series. Figure 1-Figure 3As shown, the filtration device includes a filter bottle 1, a filter element 2 and a water diversion sleeve 3, wherein the filter element 2 and the water diversion sleeve 3 are both arranged in the filter bottle 1, and the filter bottle 1, the filter element 2 and the water diversion sleeve 3 are all rotating body structures. The filter bottle 1 includes a bottle body 11 and an end cover 12, and the bottle body 11 and the end cover 12 are integrally formed. The filter element 2 and the water diversion sleeve 3 can be installed into the filter bottle 1 from the other end of the bottle body 11. The bottle body 11 and the end cover 12 are arranged as an integrally formed structure, so that the sealing structure and the connection structure between the bottle body 11 and the end cover 12 can be omitted, so that the overall structure of the filtration device is simple and easy to assemble. The filter bottle 1 also includes a base 13, which is sealed at the other end of the bottle body 11, thereby ensuring that the filter bottle 1 as a whole can be in a closed state.

[0058] Furthermore, if Figure 1 As shown, the end cover 12 is provided with a raw water inlet 124, a clean water outlet 125 and a concentrated water outlet 126, wherein the raw water inlet 124 is used to pass tap water or water to be treated from upstream, the clean water outlet 125 is used to discharge the clean water filtered by the filter element 2, and the concentrated water outlet 126 is used to discharge the concentrated water filtered by the filter element 2. Figure 2-Figure 4 As shown, the filter element 2 includes a filter layer 21 and a clean water pipe 22. The clean water pipe 22 penetrates the filter layer 21 along the axial direction of the filter layer 21, and the first end of the clean water pipe 22 extends from the inside of the filter layer 21 to the outside of the first end of the filter layer 21, and the second end of the clean water pipe 22 extends from the inside of the filter layer 21 to the outside of the second end of the filter layer 21. The water distribution jacket 3 is arranged at one end of the filter bottle 1 close to the end cover 12, and the water distribution jacket 3 includes an end plate 31. The first side of the end plate 31 (that is, the side away from the end cover 12) is provided with an inner sleeve 32 and an outer sleeve 33. The inner sleeve 32 is located inside the outer sleeve 33, the filter layer 21 is sealed and inserted into the outer sleeve 33, and the first end of the clean water pipe 22 is sealed and inserted into the inner sleeve 32. A first outlet 313 and a second outlet 314 are provided on the end plate 31. The raw water inlet 124 is connected to the gap 5 formed by the filter bottle 1 and the filter element 2 body. The first outlet 313 is connected to the inner sleeve 32 and the clean water outlet 125. The second outlet 314 is connected to the concentrated water outlet 126 and the space between the inner sleeve 32 and the outer sleeve 33.

[0059] In the filtration device of this embodiment, the filter element 2 is disposed within the filter bottle 1, the clean water pipe 22 of the filter element 2 is confined within the inner sleeve 32 of the water diversion sleeve 3, and the filter layer 21 is confined within the outer sleeve 33 of the water diversion sleeve 3. Therefore, the outer sleeve 33 of the water diversion sleeve 3 can separate the end of the filter layer 21 used for discharging concentrated water (i.e., the first end of the filter layer 21) from the channel through which raw water enters, thereby effectively separating raw water from concentrated water; the inner sleeve 32 can separate the clean water pipe 22 of the filter element 2 from the end of the filter layer 21 used for discharging concentrated water, thereby effectively separating concentrated water from clean water. This structure is simple and has excellent separation effect. Furthermore, the end cap portion 12 and the bottle body portion 11 of the filter bottle 1 are integrally formed, resulting in a simple overall structure of the filtration device and excellent water separation effect for each component of water.

[0060] When using the filter element 2 device, the flow process of water in the filter device is as follows:

[0061] like Figure 2 and Figure 3 As shown, raw water enters the gap 5 between the filter bottle 1 and the filter element 2 from the raw water inlet 124, and then enters the filter layer 21 from the second end of the filter layer 21 for filtration, wherein the clean water obtained by filtration flows into the clean water pipe 22, and then passes through the first outlet 313 on the end plate 31 of the water distribution sleeve 3, and is discharged from the filtration device from the clean water outlet 125 on the filter bottle 1, while the concentrated water produced by the filter element 2 passes through the second outlet 314 on the end plate 31, and is discharged from the concentrated water outlet 126 on the filter bottle 1, thereby completing the filtration process.

[0062] Optionally, in this embodiment, the filter layer 21 is made of a reverse osmosis membrane. In other embodiments, the specific material and type of the filter layer 21 are not specifically limited. When the filter includes multiple filter devices, the filter element 2 in each filter device can be the same or different, and can be selected and set according to actual needs.

[0063] Preferably, if Figure 2 As shown, a water-dividing seal 6 is disposed between the clean water pipe 22 and the inner sleeve 32. This seal 6 effectively prevents concentrated water produced by filtration from entering the first outlet 313 for discharging purified water through the gap between the inner sleeve 32 and the first end of the clean water pipe 22, thereby improving the separation of concentrated water from purified water and enhancing the filtration efficiency of the filtration device. In this embodiment, the water-dividing seal 6 can be a rubber ring, and the filtration device includes multiple water-dividing seals 6, which are sequentially arranged along the axial direction of the clean water pipe 22, further improving the separation of concentrated water from purified water.

[0064] Preferably, if Figure 2As shown, the depth of the outer sleeve 33 is greater than the depth of the inner sleeve 32, thereby enabling the inner sleeve 32 to better separate the raw water and the concentrated water. The specific depth of the outer sleeve 33 and the inner sleeve 32 can be reasonably set based on factors such as the length of the first end of the clean water pipe 22, and is not limited here.

[0065] Furthermore, if Figure 4 As shown, reinforcing ribs 35 are connected between the outer sleeve 33 and the inner sleeve 32. This strengthens the structure of the water-dividing jacket 3. Specifically, multiple reinforcing ribs 35 are provided, spaced apart between the outer sleeve 33 and the inner sleeve 32, thereby reducing any obstruction to the discharge of concentrated water caused by the reinforcing ribs 35. In this embodiment, the multiple reinforcing ribs 35 are evenly arranged. In other embodiments, the specific arrangement of the reinforcing ribs 35 is not limited.

[0066] Preferably, if Figure 2 As shown, a mounting sleeve 131 is provided on the inner side of the base 13, and the second end of the clean water pipe 22 is plugged into the mounting sleeve 131, thereby realizing the installation of the filter element 2 in the filter bottle 1. Furthermore, the water diversion sleeve 3 is fixed relative to the filter bottle 1, the end face of the first end of the clean water pipe 22 abuts against the end of the water diversion sleeve 3, and the second end of the clean water pipe 2 abuts against the bottom of the mounting sleeve 131, thereby realizing the axial limitation of the filter element 2 and ensuring the stability of the axial position of the filter element 2. It should be noted that the specific fixing method of the water diversion sleeve 3 in the filter bottle 1 can be that the water diversion sleeve 3 and the filter element 2 are fixed by abutting against the end cover 12 and the base 13 of the filter bottle 1 respectively, or the water diversion sleeve 3 is directly fixed in the filter bottle 1 by fasteners, etc., which is not specifically limited here.

[0067] Furthermore, if Figure 2 and Figure 5 As shown, the outer wall of the outer sleeve 33 of the water diversion jacket 3 is further configured with circumferentially extending limiting ribs 34. The limiting ribs 34 abut the inner wall of the bottle body 11 and are provided with notches 37. The notches 37 connect the raw water inlet 124 with the gap 5 between the bottle body 11 and the filter element 2. The limiting ribs 34 limit the radial position of the water diversion jacket 3, and thus the radial position of the filter element 2, further ensuring the stable position of the filter element 2 and the effective separation of the clean water and the concentrated water.

[0068] Preferably, if Figure 5 and Figure 6As shown, the outer wall of the outer sleeve 33 is also configured with an axially extending guide rib 36. The inner wall of the bottle body 11 is configured with a guide protrusion 111 that matches the guide rib 36. The guide rib 36 and the guide protrusion 111 slidably engage with each other along the axial direction. On the one hand, the cooperation between the guide protrusion 111 and the guide rib 36 facilitates the positioning of the water diversion sleeve 3 and the filter bottle 1, thereby facilitating the rapid installation of the water diversion sleeve 3 and the filter bottle 1. On the other hand, the guide rib 36 also serves to guide the raw water, allowing it to reach the second end of the filter layer 21 more smoothly. Specifically, in this embodiment, two parallel guide ribs 36 are configured on the outer wall of the outer sleeve 33. The guide protrusion 111 is a two parallel rib structure. The guide protrusion 111 is inserted between the two guide ribs 36. In other embodiments, the two guide ribs 36 can also be inserted between the two rib structures, which is not limited here.

[0069] In order to achieve the communication between the first outlet 313 and the clean water outlet 125, and the communication between the second outlet 314 and the concentrated water outlet 126, as shown in FIG. Figure 2 and Figure 3 As shown, the end cover 12 is constructed with a first tubular column 121 and a second tubular column 122. The clean water outlet 125 is connected to the first tubular column 121, and the concentrate outlet 126 is connected to the second tubular column 122. A third tubular column 311 and a fourth tubular column 312 are constructed on the second side of the end plate 31. The first outlet 313 is connected to the third tubular column 311, and the second outlet 314 is connected to the fourth tubular column 312. The first tubular column 121 and the third tubular column 311 are sealed together, thereby enabling communication between the first outlet 313 and the clean water outlet 125. The second tubular column 122 and the fourth tubular column 312 are sealed together, thereby enabling communication between the second outlet 314 and the concentrate outlet 126. The arrangement of the first tubular column 121 and the second tubular column 122 facilitates communication between the clean water outlet 125 and the concentrate outlet 126 and external pipelines.

[0070] Preferably, if Figure 2 As shown, the third tube column 311 is inserted into the first tube column 121, and the end face of the first tube column 121 abuts against the end plate 31. The fourth tube column 312 is inserted into the second tube column 122, and the second tube column 122 abuts against the end plate 31. This is equivalent to the abutment between the water diversion jacket 3 and the end cover 12. On the one hand, since the filter element 2 is inserted into the water diversion jacket 3 and its end face abuts the water diversion jacket 3, the axial direction of the filter element 2 abuts against the base 13 of the filter bottle 1 and the axial direction of the water diversion jacket 3 abuts against the end cover 12, thereby achieving the axial positioning of the water diversion jacket 3 and the filter element 2 relative to the filter bottle 1 without the need for other connecting structures, thereby simplifying the structure of the filtration device.

[0071] Further, such as Figure 2As shown, the filtration device further includes a first seal 41 and a second seal 42, wherein the first seal 41 is sandwiched between the first tubular column 121 and the third tubular column 311, thereby further improving the sealing performance of the connection between the first outlet 313 and the clean water outlet 125. Similarly, the second seal 42 is sandwiched between the second tubular column 122 and the fourth tubular column 312. This further improves the sealing performance of the connection between the second outlet 314 and the concentrated water outlet 126. Optionally, both the first seal 41 and the second seal 42 can be rubber rings. Furthermore, multiple first seals 41 can be axially arranged between the first tubular column 121 and the third tubular column 311, and multiple second seals 42 can be axially arranged between the second tubular column 122 and the fourth tubular column 312, to ensure sealing reliability.

[0072] In this embodiment, Figure 3 As shown, the end cover 12 further includes a fifth tube column 123 , and the raw water inlet 124 is connected to the fifth tube column 123 to communicate with the interior of the filter bottle 1 . The fifth tube column 123 is provided to facilitate the communication between the raw water inlet 124 and the external raw water pipeline.

[0073] like Figure 1 As shown, in this embodiment, the raw water inlet 124, the clean water outlet 125 and the concentrated water outlet 126 are distributed in a triangular shape, so that the three openings on the end cover 12 can be arranged more compactly, thereby making the size of the end cover 12 and the entire filter bottle 1 more compact to meet the use requirements of small-sized filters.

[0074] In order to meet the requirements of structural tightness, the raw water inlet 124, the clean water outlet 125 and the concentrated water outlet 126 are all located at eccentric positions relative to the axis of the filter element 2, which is equivalent to the first pipe string 121 and the second pipe string 122 also being located at eccentric positions relative to the axis of the filter element 2. Correspondingly, the third pipe string 311 and the fourth pipe string 312 are also located at eccentric positions relative to the axis of the filter element 2. At this time, in order to achieve communication between the first outlet 313 and the interior of the inner sleeve 32, and communication between the second outlet 314 and the space between the inner sleeve 32 and the outer sleeve 33, as shown in FIG. Figure 2 and Figure 4As shown, the third pipe leg 311 includes a first extension portion 3111 extending through the end plate 31 and sealingly connected to the circumferential outer wall of the inner sleeve 32. A first outlet 313 is formed on the circumferential inner wall of the inner sleeve 32 and communicates with the first extension portion 3111, thereby connecting the first outlet 313 to the first end of the clean water pipe 22 and the clean water outlet 125, respectively, to facilitate the discharge of clean water. The fourth pipe leg 312 includes a second extension portion 3121 extending through the end plate 31 and sealingly connected to the circumferential inner wall of the inner sleeve 32. A second outlet 314 is formed on the circumferential outer wall of the inner sleeve 32 and communicates with the second extension portion 3121, thereby connecting the second outlet 314 to the end of the filter layer 21 that discharges concentrated water and the concentrated water outlet 126, respectively, to facilitate the discharge of concentrated water. The overall structure is simple and compact, making it easy to achieve miniaturization.

[0075] Preferably, if Figure 2 As shown, the first extension portion 3111 and the second extension portion 3121 extend into the inner sleeve 32 to the same depth, and the first end of the clean water pipe 22 abuts against the first extension portion 3111 and the second extension portion 3121. This allows the filter element 2 to be positioned axially to ensure that it is properly installed when it is installed into the water diversion sleeve 3. In other embodiments, when the first extension portion 3111 and the second extension portion 3121 extend into the inner sleeve 32 to different depths, the first end of the clean water pipe 22 may abut only against the first extension portion 3111 or the second extension portion 3121 that extends to a greater depth.

[0076] Example 2

[0077] This embodiment provides a filter device and a water purifier. The water purifier includes at least one filter device. When the water purifier includes multiple filter devices, the multiple filter devices can be connected in series. The filter device of this embodiment is similar in overall structure and principle to the filter device of Example 1. The similarities between this embodiment and Example 1 are not repeated here. The main difference lies in the distribution of the raw water inlet 124, the purified water outlet 125, and the concentrated water outlet 126 on the end cover portion 12. Correspondingly, the distribution of the first pipe column 121 and the second pipe column 122, as well as the positional relationship between the third pipe column 311 and the fourth pipe column 312 and the inner sleeve 32 and the outer sleeve 33, respectively, are also different, as follows:

[0078] like Figure 7-10 As shown, the raw water inlet 124, the clean water outlet 125 and the concentrated water outlet 126 are distributed in a straight line, so the clean water outlet 125 can be set at a position relative to the center of the axis of the filter element 2, and then the second outlet 314 can be set at a position relative to the center of the axis of the filter element 2, so as to more conveniently realize the clean water discharge and make the overall structure of the filtering device simpler.

[0079] Specifically, if Figure 8and Figure 10 As shown, the first tubular column 121, the third tubular column 311, and the inner sleeve 32 are coaxially arranged so that the first outlet 313 is opposite the center of the filter element 2. Preferably, the third tubular column 311 extends into the inner sleeve 32 and is penetrated by the clean water pipe 22, so that the clean water can be discharged from the filter device through the third tubular column 311 and the first tubular column 121. The second outlet 314 is connected to the fourth tubular column 312 and is arranged between the inner sleeve 32 and the outer sleeve 33. The second outlet 314 is arranged opposite the first end of the filter layer 21, so that the concentrated water can be discharged from the second outlet 314 through the fourth tubular column 312 and the second tubular column 122 to the outside of the filter device, ensuring effective separation of the concentrated water and the clean water, further improving the filtering effect of the filter device.

[0080] Obviously, the above embodiments of the present invention are merely examples for the purpose of illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will readily vary the specific embodiments and scope of application based on the principles of the present invention, and this specification should not be construed as limiting the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the claims.

Claims

1. A filtering device, characterized in that: include: A filter bottle (1) comprises an integrally formed bottle body (11) and an end cover (12), wherein the end cover (12) is provided with a raw water inlet (124), a purified water outlet (125), and a concentrated water outlet (126); A filter element (2) is arranged in the filter bottle (1), the filter element (2) comprising a filter layer (21) and a water purification pipe (22), the first end of the water purification pipe (22) extending from the inside of the filter layer (21) to the outside of the first end of the filter layer (21); and The water distribution sleeve (3) comprises an end plate (31), an inner sleeve (32) and an outer sleeve (33) are provided on a first side of the end plate (31), the inner sleeve (32) is located inside the outer sleeve (33), the filter layer (21) is sealed and plugged into the outer sleeve (33), the first end of the clean water pipe (22) is sealed and plugged into the inner sleeve (32), and a first outlet (313) and a second outlet (314) are provided on the end plate (31); The raw water inlet (124) is connected to the gap (5) formed by the filter bottle (1) and the filter element (2) body, the first outlet (313) is connected to the inner sleeve (32) and the clean water outlet (125), and the second outlet (314) is connected to the concentrated water outlet (126), the space between the inner sleeve (32) and the outer sleeve (33); A circumferentially extending limiting rib (34) is further formed on the outer side wall of the outer sleeve (33), the limiting rib (34) abuts against the inner wall of the bottle body (11), and a notch (37) is provided on the limiting rib (34), the notch (37) communicating with the raw water inlet (124) and the gap (5); A guide rib (36) extending in the axial direction is further constructed on the outer side wall of the outer sleeve (33), and a guide protrusion (111) matching the guide rib (36) is constructed on the inner side wall of the bottle body (11), wherein the guide rib (36) and the guide protrusion (111) are axially slidably matched together.

2. The filtering device according to claim 1, wherein A first tube column (121) and a second tube column (122) are constructed on the end cover portion (12); the clean water outlet (125) is in communication with the first tube column (121), and the concentrated water outlet (126) is in communication with the second tube column (122); A third pipe string (311) and a fourth pipe string (312) are constructed on the second side of the end plate (31), the first outlet (313) is in communication with the third pipe string (311), and the second outlet (314) is in communication with the fourth pipe string (312); The first tube string (121) and the third tube string (311) are sealed and connected, and the second tube string (122) and the fourth tube string (312) are sealed and connected.

3. The filtering device according to claim 2, characterized in that The raw water inlet (124), the purified water outlet (125) and the concentrated water outlet (126) are distributed in a triangular shape.

4. The filtering device according to claim 3, wherein The third pipe string (311) and the fourth pipe string (312) are eccentrically arranged relative to the inner sleeve (32); The third pipe column (311) includes a first extension portion (3111) extending through the end plate (31) and sealed to the circumferential outer side wall of the inner sleeve (32); the first outlet (313) is formed on the circumferential inner side wall of the inner sleeve (32) and communicates with the first extension portion (3111); The fourth pipe column (312) includes a second extension portion (3121) extending through the end plate (31) and sealed to the circumferential inner wall of the inner sleeve (32), and the second outlet (314) is formed on the circumferential outer wall of the inner sleeve (32) and communicates with the second extension portion (3121).

5. The filtering device according to claim 4, characterized in that The first end of the water purification pipe (22) abuts against the first extension portion (3111) and / or the second extension portion (3121).

6. The filtering device according to claim 2, wherein: Therefore, the raw water inlet (124), the purified water outlet (125) and the concentrated water outlet (126) are distributed in a straight line.

7. The filtering device according to claim 6, characterized in that The first pipe column (121), the third pipe column (311) and the inner sleeve (32) are coaxially arranged, and the third pipe column (311) extends to the inside of the inner sleeve (32) and is connected to the first end of the clean water pipe (22); The second outlet (314) is arranged between the inner sleeve (32) and the outer sleeve (33).

8. The filtering device according to claim 2, wherein The third pipe string (311) is sealed and plugged into the first pipe string (121), and the end surface of the first pipe string (121) abuts against the end plate (31); and / or the fourth pipe string (312) is sealed and plugged into the second pipe string (122), and the end surface of the second pipe string (122) abuts against the end plate (31); The filtering device further comprises a first sealing member (41), wherein the first sealing member (41) is sandwiched between the first tubular column (121) and the third tubular column (311); The filtering device further comprises a second sealing member (42), wherein the second sealing member (42) is sandwiched between the second tube column (122) and the fourth tube column (312).

9. The filtering device according to any one of claims 1 to 8, characterized in that: The filter bottle (1) further comprises a base (13), wherein the base (13) is sealed at an end of the bottle body (11) away from the end cover (12).

10. The filtering device according to claim 9, characterized in that An installation sleeve (131) is provided on the inner side of the base (13), and the second end of the clean water pipe (22) extends from the inside of the filter layer (21) to the outside of the second end of the filter layer (21), and the second end of the clean water pipe (22) is plugged into the installation sleeve (131).

11. The filtering device according to any one of claims 1 to 8, characterized in that: The depth of the outer sleeve (33) is greater than the depth of the inner sleeve (32).

12. The filtering device according to any one of claims 1 to 8, characterized in that: A reinforcing rib (35) is connected between the outer sleeve (33) and the inner sleeve (32); The clean water pipe (22) is limited to the inner sleeve (32); The filter layer (21) is limited to the outer sleeve (33); The filter layer (21) is made of a reverse osmosis membrane; A water separation seal (6) is provided between the clean water pipe (22) and the inner sleeve (32); Two parallel guide ribs (36) are constructed on the outer side wall of the outer sleeve (33), and the guide protrusion (111) is two parallel rib structures; the guide protrusion (111) is inserted between the two guide ribs (36), or the two guide ribs (36) are inserted between the two rib structures; The end cover portion (12) further includes a fifth tube column (123), and the raw water inlet (124) is in communication with the fifth tube column (123) so as to be in communication with the interior of the filter bottle (1); When the filtering device is used, the flow process of water in the filtering device is as follows: raw water enters the gap (5) from the raw water inlet (124), and then enters the filtering layer (21) from the second end of the filtering layer (21) for filtration, wherein the clean water obtained by filtration flows into the clean water pipe (22), and then passes through the first outlet (313) and is discharged from the filtering device from the clean water outlet (125), while the concentrated water generated by the filter element (2) passes through the second outlet (314) and is discharged from the concentrated water outlet (126), thereby realizing the filtering process; The first end of the water purification pipe (22) and the first end of the filter layer (21) are located on the same side; The second end of the water purification pipe (22) and the second end of the filter layer (21) are located on the same side; The first end of the clean water pipe (22) and the second end of the clean water pipe (22) are arranged opposite to each other; The first end of the filter layer (21) is arranged opposite to the second end of the filter layer (21).

13. A water purifier, characterized in that: The filter device comprises the filter device according to any one of claims 1 to 12.

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