Water purifier and filter element

Abstract

The utility model provides a kind of water purifier and filter core, filter core includes shell, end cap assembly, core body and core body installation component, core body installation component includes mounting seat and center tube, core body includes the filter silk of bending, the bending part of filter silk forms bending end, the free end of filter silk is installation end, bending end and installation end are the two ends opposite of core body, bending end is close to end cap assembly, installation end is away from end cap assembly, installation end is connected with mounting seat. By mounting seat installation core body, simplify installation structure and procedure, improve production efficiency, save cost, and can guarantee the shape of core body, avoid deformation.

Description

Technical Field

[0001] This utility model belongs to the technical field of water purification devices, specifically relating to a water purifier and filter element. Background Technology

[0002] Existing hollow fiber membrane filter cartridges for water purification use either straight-line or U-shaped arrangement of the filter fibers. Straight-line arrangement offers high stability and ease of rinsing, but its large size makes it inconvenient for small water purification systems. U-shaped arrangement cartridges are smaller, but the fibers are prone to deformation during assembly and use, affecting filtration efficiency. Furthermore, U-shaped fibers are difficult to rinse and have a shorter lifespan. A common improvement method involves installing a membrane housing to secure the filter fibers, and then adding inlet / outlet ports and rinsing ports to the membrane housing or the end cap connected to it. However, this method is not only costly but also has low space utilization.

[0003] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0004] This utility model addresses the aforementioned problems in the prior art by proposing a filter element that solves the technical problems of complex installation structure, high cost, and low space utilization of existing U-shaped filter wires.

[0005] To achieve the above-mentioned objectives, the present invention employs the following technical solution: A filter element, comprising: case; The core is located inside the housing; A core mounting assembly, located within the housing, is used to mount the core; An end cap assembly is installed on the housing and forms a first flow channel between it and the inner wall of the housing, and a second flow channel is formed inside the end cap assembly; The core includes a bent filter wire, the bent portion of the filter wire forms a bent end, the free end of the filter wire is a mounting end, the bent end and the mounting end are the two opposite ends of the core, the bent end is close to the end cap assembly, and the mounting end is away from the end cap assembly; The core mounting assembly includes: Mounting base, wherein the mounting end is connected to the mounting base; A central tube, one end of which is connected to the mounting base, and the other end of which is sealed to the end cap assembly; the internal flow channel of the central tube is connected to the second flow channel. The core is disposed around the central tube, and the mounting base and / or the central tube are provided with a plurality of through holes, the through holes connecting the internal flow channels of the core and the central tube.

[0006] As described above, the mounting base has several through holes, and a first water passage gap is formed between the bottom of the mounting base and the inner wall of the housing. The through holes are connected to the first water passage gap, and the first water passage gap is connected to the internal flow channel of the central tube.

[0007] As described above, the mounting base includes an adhesive layer for mounting and fixing the mounting end, or the mounting base is provided with a plurality of mounting holes for mounting and fixing the mounting end.

[0008] As described above, the mounting base of the filter element is provided with: The sealing part is connected to the inner wall of the housing in a sealing manner to seal the gap between the inner wall of the housing and the side wall of the mounting base; The positioning part is connected to the inner wall of the housing to fix the mounting base.

[0009] As described above, the end cap assembly of the filter element has a third flow channel; the core mounting assembly includes an inner tube, one end of which is connected to the end cap assembly, the inner tube is located between the central tube and the core, and a second water passage gap is formed between the inner tube and the central tube, the second water passage gap connecting the first flow channel and the third flow channel.

[0010] As described above, the filter element is a hollow fiber membrane. A fourth flow channel is formed between the outer side of the hollow fiber membrane and the inner wall of the shell. The fourth flow channel is connected to the first flow channel. The hollow pores of the hollow fiber membrane are connected to the internal flow channel of the central tube through the through hole.

[0011] As described above, the filter element has an mounting portion on the outer wall of the central tube, and the inner tube is at least partially fitted onto the mounting portion for fixation.

[0012] As described above, the end cap assembly of the filter element includes: The middle cover forms a first flow channel between itself and the inner wall of the shell; A connecting pipe is disposed inside the middle cover and seals the connection to the central pipe, forming a second flow channel inside the connecting pipe; A third flow channel is formed between the connecting pipe and the middle cover, and the inner pipe is sealed to the middle cover, so that the second water passage gap connects the first flow channel and the third flow channel.

[0013] A water purifier includes the filter element described above, and a valve for controlling the opening and closing of the first flow channel and the second flow channel. When the valve is opened, water flows in from the first flow channel, is filtered by the filter element, and then flows out from the second flow channel through the internal flow channel of the central tube. And / or, water or cleaning fluid flows in from the second channel, flows out from the first channel through the internal channel of the central tube and the core, and backwashes the core.

[0014] A water purifier includes the filter element described above, and valves for controlling the opening and closing of the first flow channel, the second flow channel, and the third flow channel; When the valve controls the opening of the first and second flow channels and the closing of the third flow channel, water flows in from the first flow channel, is filtered by the core, and then flows out from the second flow channel through the internal flow channel of the central tube. And / or, when the valve controls the first flow channel, the second flow channel to open, and the third flow channel to open intermittently, water flows in from the first flow channel, is filtered by the core, and then flows out from the second flow channel through the internal flow channel of the central tube. The wastewater generated by filtration flows out intermittently from the third flow channel. And / or, the valve controls the opening of the first flow channel and the third flow channel, and the second flow channel can be selectively opened; when the second flow channel is closed, water or cleaning fluid flows in from the first flow channel, passes through the core body and the second water passage gap, and flows out from the third flow channel to perform forward rinsing of the core body; when the second flow channel is open, water or cleaning fluid flows in from the first flow channel, passes through the core body, and flows out from the third and second flow channels to perform forward rinsing of the core body; And / or, the valve controls the opening of the first flow channel and the second flow channel, and the third flow channel can be selectively opened; when the third flow channel is closed, water or cleaning fluid flows in from the second flow channel, enters the core through the first water passage gap, and flows out from the first flow channel to backwash the core; when the third flow channel is open, water or cleaning fluid flows in from the second flow channel, passes through the core, and flows out from the first and third flow channels to backwash the core.

[0015] The water purifier described above further includes at least one carbon rod filter element.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows: The filter element of this utility model includes a shell, an end cap assembly, a core body, and a core body mounting assembly. The core body mounting assembly includes a mounting base and a central tube. The core body includes bent filter wires, with the bent portion of the filter wires forming a bent end and the free end of the filter wires serving as the mounting end. The bent end and the mounting end are the two opposite ends of the core body. The bent end is close to the end cap assembly, and the mounting end is away from the end cap assembly. The mounting end is connected to the mounting base. Installing the core body through the mounting base simplifies the installation structure and process, improves production efficiency, saves costs, and ensures the shape of the core body, preventing deformation.

[0017] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a filter element in a specific embodiment.

[0020] Figure 2 for Figure 1 Sectional view along line AA.

[0021] Figure 3 for Figure 1 A cross-sectional view perpendicular to the AA direction.

[0022] Figure 4 This is a schematic diagram of the mounting base in a specific embodiment.

[0023] Figure 5 This is an exploded view of a specific embodiment.

[0024] In the picture: 11. Upper shell; 12. Lower shell; 2. Core; 21. Bending end; 22. Mounting end; 31. Mounting base; 311. Bottom wall; 312. Side wall; 32. Central tube; 321. Mounting part; 33. Sealing part; 34. Positioning part; 35. Inner tube; 41. First water passage gap; 42. Second water passage gap; 51. Middle cover; 52. Connecting pipe; 61. First flow channel; 62. Second flow channel; 63. Third flow channel; 64. Fourth flow channel Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," and "right," etc., indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings, with the direction closer to the center of the kettle lid being "inner," and the opposite being "outer." These terms are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0030] like Figures 1-5 As shown, the filter element includes a housing, an end cap assembly, a core 2, and a core mounting assembly.

[0031] For ease of assembly, the housing includes an upper shell 11 and a lower shell 12, which are detachably and sealed together. The upper shell 11 and the lower shell 12 are assembled together to form a mounting cavity; the mounting cavity is used to mount the end cap assembly, the core 2, and the core mounting assembly.

[0032] The lower shell 12 forms the bottom wall and part of the side wall of the shell, and the upper shell 11 forms the side wall of the shell. The bottom of the upper shell 11 is connected to the top of the lower shell 12, and the top of the upper shell 11 is the opening.

[0033] The end cap assembly is mounted on the housing. Specifically, the end cap assembly is mounted inside the upper housing 11, near the opening.

[0034] A first flow channel 61 is formed between the end cap assembly and the inner wall of the housing, and a second flow channel 62 is formed inside the end cap assembly.

[0035] The core mounting assembly is located within the mounting cavity of the housing and is used to mount the core 2. Specifically, the core mounting assembly is installed inside the lower shell 12, near the bottom wall of the lower shell 12.

[0036] The core mounting assembly includes a mounting base 31 and a central tube 32.

[0037] One end of the core 2 is mounted on the mounting base 31.

[0038] One end of the central tube 32 is connected to the mounting base 31, and the other end of the central tube 32 is sealed to the end cap assembly. The internal flow channel of the central tube 32 is connected to the second flow channel 62.

[0039] The core 2 is located inside the mounting cavity formed by the shell, and the core 2 is sleeved around the central tube 32.

[0040] The core 2 includes a bent filter wire, the bent portion of the filter wire forms a bent end 21, and the free end of the filter wire is a mounting end 22. The bent end 21 and the mounting end 22 are the two opposite ends of the core 2. The bent end 21 is close to the end cap assembly, and the mounting end 22 is away from the end cap assembly. The mounting end 22 is mounted on the mounting base 31.

[0041] The core 2 consists of loosely bent filter fibers that are fixed by a core mounting assembly.

[0042] The filter filament is a hollow fiber membrane, and the hollow fiber membrane wall forms hollow channels. The mounting base 31 is provided with several through holes, which connect the internal flow channels of the core 2 and the central tube 32.

[0043] A fourth flow channel 64 is formed between the outer side of the hollow fiber membrane and the inner wall of the shell. The fourth flow channel 64 is connected to the first flow channel 61. The hollow channels of the hollow fiber membrane are connected to the internal flow channels of the central tube 32 through through holes. The hollow fiber membrane can be a hollow fiber ultrafiltration membrane or other hollow fiber membranes.

[0044] In some other embodiments, the central tube 32 is provided with a plurality of through holes that connect the core 2 and the internal flow channel of the central tube 32.

[0045] In some other embodiments, both the mounting base 31 and the central tube 32 are provided with a plurality of through holes that connect the internal flow channels of the core 2 and the central tube 32.

[0046] The mounting base 31 is provided with several through holes, and a first water passage gap 41 is formed between the bottom of the mounting base 31 and the inner wall of the housing. The through holes are connected to the first water passage gap 41, and the first water passage gap 41 is connected to the internal flow channel of the central tube 32.

[0047] Mounting base 31 includes a bottom wall 311 and a side wall 312. The side wall 312 and the central tube 32 extend from the bottom wall 311 in the same direction, forming a mounting cavity for the core 2 between them.

[0048] The central tube 32 is located at the center of the bottom wall 311, and the central tube 32 is fixedly connected to the bottom wall 311.

[0049] The bottom wall 311 of the mounting base 31 is provided with several through holes that connect the internal flow channels of the core 2 and the central tube 32.

[0050] A first water passage gap 41 is formed between the bottom wall 311 and the inner wall of the shell. Specifically, a first water passage gap 41 is formed between the bottom wall 311 and the inner wall of the lower shell 12.

[0051] The first water passage 41 connects to the internal flow channel of the central pipe 32, thereby connecting to the second flow channel 62.

[0052] The bottom wall 311 is provided with several through holes, which are connected to the first water passage gap 41. That is, the upper space and the lower space of the bottom wall 311 are connected through the through holes.

[0053] The bottom wall 311 is the adhesive layer for mounting and fixing the mounting end 22. The assembly process of the mounting base 31 and the core 2 is as follows: A component with a side wall 312 and a central tube 32 on the bottom surface is produced. The side wall 312 and the central tube 32 of this component extend on the same side of the bottom surface, and a core mounting cavity is formed between the side wall 312 and the central tube 32. The central tube 32 is integrally formed with the bottom surface. The corresponding parts of the bottom surface and the central tube 32 are openings. A hot melt adhesive layer is applied to the bottom surface and the core mounting cavity. Then, the mounting end 22 of the filter wire is inserted into the hot melt adhesive layer. After cooling and forming, the bottom surface is cut off and part of the hot melt adhesive layer is retained, so that the mounting end 22 of the filter wire is exposed. The hot melt adhesive layer is the bottom wall 311, and the hollow channel of the filter wire is formed as a through hole.

[0054] In some other embodiments, the bottom wall 311 is provided with a plurality of mounting holes and through holes for mounting and fixing the mounting ends. The mounting ends 22 of the core 2 are installed in the mounting holes. The diameter of the mounting holes is small, and a plurality of mounting ends 22 of the core 2 can be installed in the same mounting hole to achieve an interference fit.

[0055] The side wall 312 is provided with a sealing part 33 and a positioning part 34.

[0056] The sealing part 33 is sealed to the inner wall of the housing, and seals the gap between the inner wall of the housing and the side wall of the mounting base 31. Specifically, the sealing part 33 is connected to the inner wall of the upper shell 11.

[0057] The sealing part 33 can be a circular sealing ring, so that the side wall 312 and the inner wall of the upper shell 11 form a sealed connection.

[0058] The positioning part 34 is connected to the inner wall of the lower shell 12 to fix the mounting base 31. The positioning part 34 is a shoulder provided on the outer side of the side wall 312 of the mounting base 31.

[0059] The height of the side wall 312 is 1 / 8 to 3 / 4 of the height of the core 2, preferably 1 / 4 to 1 / 2, so as to form a mounting cavity for the core 2, which is beneficial to the installation of the core 2 and provides protection and support for the core 2.

[0060] A water purifier includes the aforementioned filter element and a valve for controlling the opening and closing of a first flow channel and a second flow channel. When the valve is opened, water flows in from the first flow channel, is filtered by the filter element, and then flows out from the second flow channel through the internal flow channel of the central tube. And / or, water or cleaning fluid flows in from the second flow channel, flows through the internal flow channel of the central tube, and flows out from the first flow channel to backwash the core.

[0061] In working mode, the valve controls the opening of the first and second flow channels. Water flows in from the first flow channel, is filtered by the core, and then flows out from the second flow channel through the internal flow channel of the central tube. In the flushing mode, the valve controls the opening of the first and second flow channels. Water or cleaning fluid flows in from the second flow channel, flows out from the first flow channel through the internal flow channel of the central tube and the core, and performs reverse flushing on the core.

[0062] Furthermore, the end cap assembly of the filter element is provided with a third flow channel 63. The core mounting assembly of the filter element further includes an inner tube 35, one end of which is connected to the end cap assembly. The inner tube 35 is located between the central tube 32 and the core 2, and a second water passage gap 42 is formed between the inner tube 35 and the central tube 32. The second water passage gap 42 connects the first flow channel 61 and the third flow channel 63.

[0063] The inner wall of the core 2 is in contact with the outer wall of the inner tube 35, and the inner tube 35 can also support the core 2, thus improving the core 2's resistance to deformation.

[0064] An installation part 321 is provided on the outer wall of the central tube 32, and the inner tube 35 is at least partially fitted onto the installation part 321 for fixation.

[0065] The mounting part 321 is a positioning rib set on the outer wall of the central tube 32, and the inner tube 35 is at least partially sleeved on the positioning rib for fixation.

[0066] The inner tube 35 is preferably a plastic tube, which allows for a certain degree of elastic deformation to be fixed on the positioning rib.

[0067] The end cap assembly includes a middle cap 51 and a connecting tube 52.

[0068] A first flow channel 61 is formed between the inner wall of the middle cover 51 and the inner wall of the upper shell 11.

[0069] The connecting pipe 52 is located inside the middle cover 51, forming a second flow channel 62. The connecting pipe 52 is sealed to the central pipe, and a third flow channel 63 is formed between the connecting pipe 52 and the middle cover 51. The inner pipe 32 is sealed to the middle cover 51, so that the second water passage gap 42 connects the first flow channel 61 and the third flow channel 63.

[0070] A first opening communicating with the first flow channel 61 is formed between the top of the upper shell 11 and the top of the middle cover 51. A third opening communicating with the third flow channel 63 is formed between the top of the middle cover 51 and the top of the connecting pipe 52. The top of the connecting pipe 52 forms the third opening communicating with the third flow channel 63.

[0071] During filter element assembly, the core mounting assembly with the core 2 installed is placed into the lower shell 12, and then the mounting base 31 is fixed in the lower shell 12. The inner tube 35 is assembled and installed onto the central tube 32. The middle cover 51 and the connecting tube 52 are assembled, and the middle cover 51 is installed onto the upper shell 11. The upper shell 11 and the lower shell 12 are sealed together. At the same time, the connecting tube 52 is connected to the central tube 32, and the middle cover 51 is connected to the inner tube 35.

[0072] A water purifier includes the aforementioned filter element and valves for controlling the opening and closing of the first flow channel, the second flow channel, and the third flow channel.

[0073] When the valve controls the opening of the first and second flow channels and the closing of the third flow channel, water flows in from the first flow channel, is filtered by the core, and then flows out from the second flow channel through the internal flow channel of the central tube. And / or, when the valve controls the opening of the first flow channel, the second flow channel, and the intermittent opening of the third flow channel, water flows in from the first flow channel, passes through the core filter, and flows out from the second flow channel through the internal flow channel of the central tube. The wastewater generated by filtration flows out from the third flow channel intermittently. And / or, the valve controls the opening of the first flow channel and the third flow channel, and the second flow channel can be selectively opened; when the second flow channel is closed, water or cleaning fluid flows in from the first flow channel, passes through the core body, and flows out from the third flow channel through the second water passage to perform forward rinsing of the core body; when the second flow channel is open, water or cleaning fluid flows in from the first flow channel, passes through the core body, and flows out from the third flow channel and the second flow channel to perform forward rinsing of the core body. And / or, the valve controls the opening of the first and second flow channels, and the third flow channel can be selectively opened; when the third flow channel is closed, water or cleaning solution flows in from the second flow channel, enters the core through the first water passage gap, and then flows out from the first flow channel to backwash the core; when the third flow channel is open, water or cleaning solution flows in from the second flow channel, passes through the core, and flows out from both the first and third flow channels to backwash the core. The water purifier includes operating modes.

[0074] In the working mode, when the valve controls the opening of the first flow channel and the second flow channel and the closing of the third flow channel, water flows in from the first flow channel. After being filtered by the core, the water flows out from the second flow channel after passing through the first water passage gap and the central pipe. The wastewater generated by filtration is located in the second water passage gap. And / or, when the valve controls the opening of the first flow channel, the second flow channel, and the intermittent opening of the third flow channel, water flows in from the first flow channel, and after being filtered by the core, the water flows out from the second flow channel through the first water passage gap and the central pipe. The wastewater generated by filtration flows out intermittently from the second water passage gap and the third flow channel.

[0075] Water purifiers include flushing modes, which are divided into forward flushing mode and / or reverse flushing mode.

[0076] The valve controls the opening of the first and third flow channels, while the second flow channel can be selectively opened. When the valve controls the opening of the first and third flow channels and the second flow channel is closed, water or cleaning fluid flows in from the first flow channel, passes through the core, and then flows out from the third flow channel through the second water passage gap to perform forward rinsing of the core; alternatively, when the valve controls the opening of the first and third flow channels and the second flow channel is open, water or cleaning fluid flows in from the first flow channel, passes through the core, and then flows out from the third flow channel through the second water passage gap to perform forward rinsing of the core, and then flows out from the second flow channel through the first water passage gap and the central tube to perform forward rinsing of the core.

[0077] And / or, the valve controls the opening of the first and second flow channels, and the third flow channel can be selectively opened. When the valve controls the opening of the first and second flow channels and the closing of the third flow channel, water or cleaning fluid flows in from the second flow channel, passes through the first water passage gap and the core, and then flows out from the first flow channel to backwash the core; or, when the valve controls the opening of the first and second flow channels and the opening of the third flow channel, water or cleaning fluid flows in from the second flow channel, passes through the first water passage gap and the core, and then flows out from the first flow channel to backwash the core, and then flows out from the third flow channel to backwash the core.

[0078] The water purifier also includes at least one carbon rod filter cartridge, installed upstream or downstream of the aforementioned filter cartridge. When the carbon rod filter cartridge is installed upstream, it performs pre-filtration; when the carbon rod filter cartridge is located downstream, it provides minerals and removes odors.

[0079] An inner tube is installed in the filter element. The second water passage formed between the inner tube and the central tube can serve as a wastewater channel in normal mode and a cleaning channel in flushing mode. Multiple flushing modes can also be selected to facilitate cleaning of the ultrafiltration fibers and extend the service life of the filter element.

[0080] In summary, the filter element can be directly fixed within the mounting cavity defined by the mounting base structure, which not only simplifies the assembly process and improves production efficiency but also prevents the element from deforming. The inner tube is sleeved on the central tube of the mounting base, further supporting the inner wall of the element and improving its resistance to deformation. Compared with a structure that completely surrounds the element, this embodiment saves material costs. Furthermore, the inner tube and the central tube define a second water passage gap as a wastewater channel, ensuring that wastewater discharge is not blocked. During mode switching, the wastewater channel can be converted into a clean flow channel to backwash the element and improve its lifespan.

[0081] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.

Claims

1. A filter element, comprising: case; The core is located inside the housing; A core mounting assembly, located within the housing, is used to mount the core; An end cap assembly is installed on the housing and forms a first flow channel between it and the inner wall of the housing, and a second flow channel is formed inside the end cap assembly; The core is characterized in that it includes a bent filter wire, the bent portion of the filter wire forms a bent end, the free end of the filter wire is a mounting end, the bent end and the mounting end are the two opposite ends of the core, the bent end is close to the end cap assembly, and the mounting end is far away from the end cap assembly. The core mounting assembly includes: Mounting base, wherein the mounting end is connected to the mounting base; A central tube, one end of which is connected to the mounting base, and the other end of which is sealed to the end cap assembly; the internal flow channel of the central tube is connected to the second flow channel. The core is disposed around the central tube, and the mounting base and / or the central tube are provided with a plurality of through holes, the through holes connecting the internal flow channels of the core and the central tube.

2. The filter element according to claim 1, characterized in that, The mounting base is provided with several through holes, and a first water passage gap is formed between the bottom of the mounting base and the inner wall of the housing. The through holes are connected to the first water passage gap, and the first water passage gap is connected to the internal flow channel of the central tube.

3. The filter element according to claim 2, characterized in that, The mounting base includes an adhesive layer for mounting and fixing the mounting end, or the mounting base is provided with a plurality of mounting holes for mounting and fixing the mounting end.

4. The filter element according to claim 2, characterized in that, The mounting base is provided with: The sealing part is connected to the inner wall of the housing in a sealing manner to seal the gap between the inner wall of the housing and the side wall of the mounting base; The positioning part is connected to the inner wall of the housing to fix the mounting base.

5. The filter element according to any one of claims 1-4, characterized in that, The filter filament is a hollow fiber membrane. A fourth flow channel is formed between the outer side of the hollow fiber membrane and the inner wall of the shell. The fourth flow channel is connected to the first flow channel. The hollow pores of the hollow fiber membrane are connected to the internal flow channel of the central tube through the through hole.

6. The filter element according to any one of claims 1-4, characterized in that, The end cap assembly is provided with a third flow channel; the core mounting assembly includes an inner tube, one end of which is connected to the end cap assembly. The inner tube is located between the central tube and the core, and a second water passage gap is formed between the inner tube and the central tube. The second water passage gap connects the first flow channel and the third flow channel.

7. The filter element according to claim 6, characterized in that, The outer wall of the central tube is provided with an installation part, and the inner tube is at least partially sleeved on the installation part for fixation.

8. The filter element according to claim 6, characterized in that, The end cap assembly includes: The middle cover forms a first flow channel between itself and the inner wall of the shell; A connecting pipe is disposed inside the middle cover and seals the connection to the central pipe, forming a second flow channel inside the connecting pipe; A third flow channel is formed between the connecting pipe and the middle cover, and the inner pipe is sealed to the middle cover, so that the second water passage gap connects the first flow channel and the third flow channel.

9. A water purifier, characterized in that, The water purifier includes a filter element as described in any one of claims 1-8, and a valve for controlling the opening and closing of the first flow channel and the second flow channel. When the valve is opened, water flows in from the first flow channel, is filtered by the filter element, and then flows out from the second flow channel through the internal flow channel of the central tube. And / or, water or cleaning fluid flows in from the second channel, flows out from the first channel through the internal channel of the central tube and the core, and backwashes the core.

10. A water purifier, characterized in that, The water purifier includes the filter element as described in any one of claims 6-8, and a valve for controlling the opening and closing of the first flow channel, the second flow channel, and the third flow channel; When the valve controls the opening of the first and second flow channels and the closing of the third flow channel, water flows in from the first flow channel, is filtered by the core, and then flows out from the second flow channel through the internal flow channel of the central tube. And / or, when the valve controls the first flow channel, the second flow channel to open, and the third flow channel to open intermittently, water flows in from the first flow channel, is filtered by the core, and then flows out from the second flow channel through the internal flow channel of the central tube. The wastewater generated by filtration flows out intermittently from the third flow channel. And / or, the valve controls the opening of the first flow channel and the third flow channel, and the second flow channel can be selectively opened; when the second flow channel is closed, water or cleaning fluid flows in from the first flow channel, passes through the core body and the second water passage gap, and flows out from the third flow channel to perform forward rinsing of the core body; when the second flow channel is open, water or cleaning fluid flows in from the first flow channel, passes through the core body, and flows out from the third and second flow channels to perform forward rinsing of the core body; And / or, the valve controls the opening of the first flow channel and the second flow channel, and the third flow channel can be selectively opened; when the third flow channel is closed, water or cleaning fluid flows in from the second flow channel, enters the core through the first water passage gap, and flows out from the first flow channel to backwash the core; when the third flow channel is open, water or cleaning fluid flows in from the second flow channel, passes through the core, and flows out from the first and third flow channels to backwash the core.

11. The water purifier according to claim 10, characterized in that, The water purifier also includes at least one carbon rod filter element.

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