Filter element and water purifier

Abstract

The application provides a filter element and a water purifier, which comprise a filter barrel, a filter cover connected to the filter barrel, an inner cavity formed by the filter cover and the filter barrel, a first filter module located in the inner cavity, the first filter module being connected to the filter barrel and being arranged separately from the filter cover, and a first sealing component clamped between the inner wall of the filter barrel and the outer wall of the first filter module to seal the gap between the inner wall of the filter barrel and the outer wall of the first filter module. The first filter module is connected to the filter barrel and arranged separately from the filter cover, so that the first filter module is not in contact with the filter cover. When the filter cover and the filter barrel are connected together through spin welding, the rotation of the filter cover during spin welding will not drive the first filter module to rotate, so that the first sealing component remains in the original static sealing state, and the sealing surface of the first sealing component is not abraded, thereby guaranteeing the sealing reliability of the first sealing component.

Description

Technical Field

[0001] This application relates to the field of water treatment technology, and in particular to a filter element and a water purifier. Background Technology

[0002] In the filter element manufacturing industry, the filter cartridge and filter cover are usually sealed together by rotary welding (such as hot plate welding, ultrasonic welding, or friction welding). In traditional designs, the filter module located inside the filter element is usually fixedly connected to the filter cover, forming a rigid connection structure between the filter module and the filter cover.

[0003] While the above design can optimize assembly efficiency, during the rotary welding process of the filter barrel and filter cover, the filter cover needs to be rotated to achieve a reliable connection with the filter barrel through frictional heat and plastic deformation. If the filter cover is rigidly connected to the filter module, the rotation of the filter cover will directly drive the rotation of the filter module, causing wear on the sealing surface of the sealing component between the filter module and the filter barrel, thus reducing the reliability of the seal. Utility Model Content

[0004] This application provides a filter element and a water purifier to solve the problem of wear on the sealing surface of the sealing component between the filter module and the filter cartridge in related technologies. The technical solution is as follows:

[0005] In a first aspect, embodiments of this application provide a filter element, comprising:

[0006] Filter barrel;

[0007] A filter cover, which is connected to the filter barrel, and the filter cover and the filter barrel form an inner cavity;

[0008] A first filter module, located within the inner cavity, connected to the filter cartridge, and spaced apart from the filter cover; and

[0009] A first sealing component is sandwiched between the inner wall of the filter barrel and the outer wall of the first filter module to seal the gap between the inner wall of the filter barrel and the outer wall of the first filter module.

[0010] In one embodiment, the filter bucket is provided with a support portion, which is located inside the inner cavity;

[0011] The first filter module is connected to the support portion to connect the first filter module to the filter barrel.

[0012] In one embodiment, there are multiple support portions, which are arranged sequentially around the axial centerline of the first filter module.

[0013] In one embodiment, the filter cover and the filter barrel are connected together by a rotary welding method;

[0014] And / or, the outer wall of the first filter module has a first positioning groove, the first positioning groove is arranged around the axial center line of the first filter module, and the first positioning groove cooperates with the first sealing component.

[0015] In one embodiment, the filter element further includes:

[0016] The second filter module is located inside the inner cavity and is connected to the first filter module. The second filter module is used to filter the initial filtered water output by the first filter module.

[0017] In one embodiment, the filter element further includes:

[0018] A water circuit adapter is provided on the filter cover and connected to the first filter module. The water circuit adapter has an inlet and an outlet. The inlet is connected to the first filter module and the outlet is connected to the second filter module.

[0019] In one embodiment, the first filtering module includes:

[0020] A first barrel body is connected to the filter barrel. The first barrel body is sealed to the filter barrel through the first sealing component. The first sealing component divides the inner cavity into an upper cavity and a lower cavity. The upper cavity is connected to the water inlet, and the lower cavity accommodates the second filter module.

[0021] An end cap, wherein the end cap is disposed on the first barrel body and is connected to the water passage adapter, the end cap and the first barrel body forming a first cavity, the first cavity communicating with the upper cavity; and

[0022] The first filter material is disposed within the first cavity.

[0023] In one embodiment, the filter element further includes:

[0024] The third filter module is located inside the first filter module and is connected to the second filter module and the water outlet. The third filter module is used to filter the purified water output by the second filter module.

[0025] In one embodiment, the first filtering module includes:

[0026] A first barrel body is connected to the filter barrel. The first barrel body is sealed to the filter barrel through the first sealing component. The first sealing component divides the inner cavity into an upper cavity and a lower cavity. The upper cavity is connected to the water inlet, and the lower cavity accommodates the second filter module.

[0027] End cap, the end cap connecting the water circuit adapter, the end cap and the first tank body forming a first cavity, the first cavity communicating with the upper cavity and the second filter module; and

[0028] The first filter material is disposed within the first cavity;

[0029] The third filter module includes:

[0030] A second barrel body is sandwiched between the first barrel body and the end cap, and is located within the first cavity. The second barrel body, the first barrel body, and the end cap form a second cavity, which connects to the second filter module and the water outlet.

[0031] The third filter material is disposed in the second cavity.

[0032] Secondly, embodiments of this application provide a water purifier, including the aforementioned filter element.

[0033] The advantages or beneficial effects of the above technical solutions include at least the following:

[0034] The filter element of this utility model ensures that the first filter module does not contact the filter cover by connecting the first filter module to the filter barrel and separating it from the filter cover. When the filter cover and the filter barrel are connected by a rotary welding method, the rotation of the filter cover during the rotary welding process will not cause the first filter module to rotate, so that the first sealing component maintains its original static sealing state. Therefore, the sealing surface of the first sealing component will not be worn, ensuring the sealing reliability of the first sealing component. Thus, the first sealing component reliably seals the gap between the first filter module and the filter barrel, preventing water leakage and improving the water purification effect.

[0035] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0036] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0037] Figure 1 This is a three-dimensional structural diagram of the filter element of the first embodiment of the present invention from a first perspective.

[0038] Figure 2 This is a three-dimensional structural diagram of the filter element of the first embodiment of the present invention from a second perspective.

[0039] Figure 3 This is a cross-sectional view of the filter element according to the first embodiment of this utility model;

[0040] Figure 4 for Figure 3 Enlarged view of section A in the image;

[0041] Figure 5 This is a three-dimensional structural diagram of the filter element of the second embodiment of the present invention from a first perspective.

[0042] Figure 6 This is a three-dimensional structural diagram of the filter element of the second embodiment of the present invention from a second perspective.

[0043] Figure 7 This is a cross-sectional view of the filter element according to the second embodiment of the present invention;

[0044] Figure 8 for Figure 7 A magnified view of section B in the image.

[0045] Figure Labels

[0046] 1. Filter barrel; 11. Support part; 2. Filter cover; 3. Inner cavity; 4. First filter module; 41. First barrel body; 411. Third tube body; 412. First limiting part; 42. End cap; 421. First tube body; 422. Second limiting part; 43. First cavity; 44. First filter media; 5. First sealing component; 6. Water circuit connection component; 61. Inlet; 62. Outlet; 63. Second tube body; 7. Third filter module; 71. Second barrel body; 8. Second sealing component; 9. Central tube; 10. Third sealing component; 20. First limiting ring; 30. Fourth sealing component; 40. Second limiting ring; 50. Water distributor; 60. Fifth sealing component; 70. Third limiting ring; 80. Sixth sealing component; 90. Seventh sealing component. Detailed Implementation

[0047] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0048] See Figures 1-8 This invention illustrates a preferred embodiment of a filter element, comprising:

[0049] Filter bucket 1;

[0050] Filter cover 2, filter cover 2 is connected to filter barrel 1, filter cover 2 and filter barrel 1 form inner cavity 3;

[0051] The first filter module 4 is located inside the inner cavity 3, connected to the filter barrel 1, and spaced apart from the filter cover 2; and

[0052] The first sealing component 5 is sandwiched between the inner wall of the filter barrel 1 and the outer wall of the first filter module 4 to seal the gap between the inner wall of the filter barrel 1 and the outer wall of the first filter module 4, thereby preventing water from crossing.

[0053] The filter element of this utility model ensures that the first filter module 4 is not in contact with the filter cover 2 by connecting the first filter module 4 to the filter barrel 1 and setting it apart from the filter cover 2. When the filter cover 2 and the filter barrel 1 are connected by a rotary welding method, the rotation of the filter cover 2 during the rotary welding process will not drive the first filter module 4 to rotate, so that the first sealing component 5 maintains its original static sealing state. Therefore, the sealing surface of the first sealing component 5 will not be worn, ensuring the sealing reliability of the first sealing component 5. Thus, the first sealing component 5 reliably seals the gap between the first filter module 4 and the filter barrel 1, preventing water leakage and improving the water purification effect.

[0054] It should be noted that the filter cover 2 and the filter barrel 1 are connected by a rotary welding method to ensure that the filter cover 2 and the filter barrel 1 are firmly connected together.

[0055] In one embodiment, the first filter module 4 is used to perform coarse filtration on the raw water input through the inlet 61 to obtain coarse filtered water.

[0056] See Figure 4 as well as Figure 8 In one embodiment, the filter bucket 1 is provided with a support part 11, which is located inside the inner cavity 3;

[0057] The first filter module 4 is connected to the support part 11 to connect the first filter module 4 to the filter cartridge 1. Thus, by providing the support part 11 inside the filter cartridge 1, the first filter module 4 can be directly connected to the support part 11, thereby achieving a stable connection between the first filter module 4 and the filter cartridge 1 and simplifying the assembly structure. Furthermore, as an integrated component of the inner cavity 3 of the filter cartridge 1, the support part 11 not only optimizes the utilization of the internal space of the filter cartridge 1, but also ensures the structural stability and integrity of the filter element by directly supporting the first filter module 4, while reducing the use of additional connecting parts, lowering assembly complexity, and improving production efficiency.

[0058] See Figure 3 as well as Figure 7 In one embodiment, there are multiple support parts 11, which are arranged sequentially around the axial centerline of the first filter module 4. By providing multiple support parts 11 arranged sequentially around the axial centerline of the first filter module 4, the first filter module 4 obtains uniform radial support force within the filter barrel 1, improving structural stability. Furthermore, the circumferential distribution design of the multiple support parts 11 enhances the first filter module 4's resistance to eccentric loading, ensuring balanced force during operation, reducing the risk of vibration and deformation. Simultaneously, it optimizes the internal spatial layout of the filter barrel 1, resulting in more uniform fluid distribution, improved filtration efficiency, and further simplifies the assembly process, enhancing the overall structural reliability and durability.

[0059] See Figure 4 and Figure 8 In one embodiment, the outer wall of the first filter module 4 has a first positioning groove, which is arranged around the axial center line of the first filter module 4 and cooperates with the first sealing component 5. Thus, by providing a first positioning groove around the axial center line on the outer wall of the first filter module 4, and ensuring its cooperation with the first sealing component 5, precise positioning and reliable sealing are achieved, ensuring that the first filter module 4 is accurately and stably installed in the filter cartridge 1. Secondly, the circumferential design of the first positioning groove ensures that the first sealing component 5 is subjected to uniform force, enhancing the sealing effect, preventing fluid leakage, simplifying the assembly process, improving installation efficiency, and reducing the risk of seal failure due to installation deviations, thereby improving the overall stability and service life of the filter element.

[0060] See Figures 1-8 In one embodiment, the filter element further includes:

[0061] The second filter module (not shown in the figure) is located inside the inner cavity 3 and is connected to the first filter module 4. The second filter module is used to filter the pre-filtered water output from the first filter module 4. By adding a second filter module connected to the first filter module 4 in the inner cavity 3, a two-stage filtration structure is formed, allowing the pre-filtered water output from the first filter module 4 to be further refined by the second filter module, thereby significantly improving the filtration effect. Secondly, the series arrangement of the second filter module and the first filter module 4 optimizes the internal flow channel structure of the filter element, realizing a graded filtration function, which not only improves the filtration accuracy but also extends the service life of the filter element. At the same time, the compact integrated design saves installation space, making the overall structure more reasonable and efficient, and meeting the multi-level filtration needs under different water quality conditions.

[0062] See Figures 1-8 In one embodiment, the second filter module and the first filter module 4 are arranged side by side along the axial direction of the filter element, so that the two-stage filtration structure can be compactly arranged in a limited space. This maintains the independent function of each filter module and optimizes the overall structural space utilization. In addition, the axially parallel arrangement makes the water flow through the first filter module 4 for primary filtration and the second filter module for fine filtration more direct and efficient, reducing fluid resistance and improving filtration efficiency. At the same time, this structure is easy to modularly produce and assemble, reducing manufacturing costs.

[0063] See Figures 1-8 In one embodiment, the filter element further includes:

[0064] Water circuit adapter 6 is disposed on filter cover 2 and connected to first filter module 4. Water circuit adapter 6 has inlet 61 and outlet 62. Inlet 61 is connected to first filter module 4 and outlet 62 is connected to second filter module. Thus, by setting a water circuit adapter 6 on the filter cover 2 and connecting it to the first filter module 4 and the second filter module respectively, the water circuit connection between the two-stage filter modules is achieved by utilizing the communication between its inlet 61 and outlet 62, forming a compact series filtration structure. Secondly, since the water circuit adapter 6 connects to the first filter module 4, it ensures that the first filter module 4 is more stably installed in the inner cavity 3, thereby making the installation position of the first filter module 4 more accurate and ensuring the efficient operation of the first filter module 4. In addition, the integrated design of the water circuit adapter 6 optimizes the water flow path, so that the water outlet of the first filter module 4 can be directly guided to the water inlet of the second filter module, reducing pipeline detours and reducing pressure loss. At the same time, this integrated structure simplifies the assembly process, improves sealing reliability, avoids the risk of leakage in intermediate links, and makes the overall structure of the filter element simpler and more reasonable by centrally arranging the water circuit interfaces, which is convenient for installation and maintenance.

[0065] In one embodiment, the water circuit adapter 6 can be attached to the filter cover 2 by means of snap-fit ​​connection, fastener (the fastener can be any one of screws, bolts, rivets, etc.) connection, etc.

[0066] See Figures 5-8 In one embodiment, the first filter module 4 includes:

[0067] The first barrel 41 is connected to the filter barrel 1, and the first barrel 41 is sealed to the filter barrel 1 through the first sealing component 5. The first sealing component 5 divides the inner cavity 3 into an upper cavity and a lower cavity. The upper cavity is connected to the water inlet 61, and the lower cavity accommodates at least a part of the first barrel 41 and the second filter module.

[0068] End cap 42 is disposed on the first barrel body 41 and is connected to the water circuit adapter 6. End cap 42 and the first barrel body 41 form a first cavity 43. The first cavity 43 is connected to the water inlet 61 through the upper cavity and is also connected to the lower cavity, so that the first filter module 4 is connected to the second filter module; and

[0069] The first filter media 44 is disposed within the first cavity 43. Thus, by constructing the first filter module 4 as a first cavity 43 structure formed by the first barrel 41 and the end cap 42, where the first barrel 41 directly connects to the filter barrel 1 to provide stable support, and the first sealing component 5 achieves a sealed fit between the first barrel 41 and the filter barrel 1, the inner cavity 3 is rationally divided into an upper cavity and a lower cavity. This double-layer cavity structure not only achieves optimized spatial layout of the two-stage filter modules but also makes the lower cavity structure accommodating the second filter module more compact. The end cap 42 connects to the water channel adapter 6 to ensure a reliable connection between the first filter module 4 and the water channel adapter 6. The first cavity 43 connects to the inlet 61 through the upper cavity to form a complete water inlet path, allowing raw water to pass through the inlet 61 and into the upper cavity. The water directly enters the first filter media 44 of the first chamber 43 for primary filtration, forming an efficient and reasonable water inlet flow channel. This structure integrates three major functions: First, the modular assembly design allows the connection between the first barrel 41 and the filter barrel 1, and the connection between the end cap 42 and the water circuit adapter 6, to simultaneously serve as a structural fixation function, greatly simplifying the assembly process; Second, the forced water flow path design ensures that the raw water must be fully filtered by the first filter media 44 before entering the subsequent process, which not only guarantees the filtration effect but also completely eliminates the possibility of water flow short circuits; Third, the overall layout is compact and reasonable, which significantly optimizes space utilization while ensuring filtration performance, providing convenience for production and manufacturing, and improving product reliability and ease of maintenance.

[0070] In one embodiment, the first filter material 44 can be activated carbon or carbon fiber, while the second filter material of the second filter module can be resin. In this way, the first filter module 4 is used to pre-filter the raw water, effectively removing large particulate impurities and residual chlorine, and significantly reducing the workload of the second filter module. The second filter module, as the main filter unit, can deeply intercept harmful substances such as heavy metals and microorganisms, thereby purifying the water and obtaining purified water.

[0071] Of course, in other embodiments, the second filter material of the second filter module may also include any one or a combination of at least two of the following: maifan stone, alkaline balls, far-infrared mineralized balls, multifunctional active ceramic balls, antibacterial materials, granular carbon, etc.

[0072] See Figure 7 as well as Figure 8 In one embodiment, the end cap 42 is provided with a first tube 421 on the side near the adapter, and the first tube 421 is connected to the first cavity 43.

[0073] The water circuit adapter 6 is provided with a second pipe body 63, which is located in the upper cavity. The second pipe body 63 is connected to the first pipe body 421 and connects the first pipe body 421 with the water outlet 62. Thus, by setting a first tube 421 connecting the first cavity 43 on the side of the end cap 42 near the adapter, and setting a second tube 63 on the water circuit adapter 6 located in the upper cavity and connected to the first tube 421, a high-efficiency flow channel is formed between the first cavity 43 and the outlet 62. This dual-tube connection structure realizes the direct connection between the first filter module 4 and the water circuit adapter 6, so that the water flow filtered by the first filter material 44 can be quickly guided to the outlet 62 through the connection of the first tube 421 and the second tube 63. This not only optimizes the water flow path and reduces fluid resistance, but also ensures the sealing and reliability of the connection through the direct docking between the tubes. At the same time, the structure is compact and reasonable, saving installation space, simplifying the assembly process, improving production efficiency, and effectively preventing leakage risks while ensuring smooth water flow. This makes the overall performance of the filter element more stable and reliable.

[0074] See Figure 7 as well as Figure 8 In one embodiment, the end of the first tube 421 near the second tube 63 is inserted into the second tube 63, and a second sealing member 8 is sandwiched between the outer wall of the first tube 421 and the inner wall of the second tube 63 to seal the gap between the first tube 421 and the second tube 63 and prevent water leakage.

[0075] In one embodiment, the outer wall of the first tube 421 has a second positioning groove, which is arranged around the axial center line of the first tube 421. The second positioning groove cooperates with the second sealing component 8 to achieve reliable positioning of the second sealing component 8 and ensure that the second sealing component 8 reliably seals the gap between the first tube 421 and the second tube 63.

[0076] See Figures 7-8 In one embodiment, the first barrel body 41 is provided with a third tube 411, which passes through the first cavity 43;

[0077] The filter element also includes:

[0078] The central tube 9 has its first end connected to the filter barrel 1 and the first end of the central tube 9 connected to the lower cavity. The second end of the central tube 9 is sequentially connected to the third tube body 411 and the first tube body 421 and the second end of the central tube 9 is connected to the first tube body 421. By setting a third pipe 411 through the first cavity 43 on the first barrel 41, and cooperating with the central pipe 9, the first end of which is connected to the filter barrel 1 and the lower cavity, and the second end of which is connected to the first pipe 421 after passing through the third pipe 411 and the first pipe 421, an integrated water outlet channel that runs through the entire filter element is constructed. This structure allows the purified water output from the second filtration module to be directly transported from the lower cavity to the first pipe 421 through the central pipe 9, forming an independent water transport path across the first filtration module 4. This not only achieves efficient connection of the multi-stage filtration structure and avoids cross-contamination of water flow, but also ensures the sealing and structural strength of the filter element through the precise fit between the pipes. At the same time, this integrated pipeline layout significantly optimizes the utilization of internal space, reduces external connecting parts, reduces fluid resistance, and makes the overall structure more compact and reliable, which improves filtration efficiency and facilitates assembly.

[0079] See Figures 7-8 In one embodiment, the filter element further includes:

[0080] The third sealing component 10 is sandwiched between the outer wall of the central tube 9 and the inner wall of the extension of the third tube body 411 into the lower cavity to seal the gap between the central tube 9 and the third tube body 411 and prevent water from flowing through.

[0081] The first limiting ring 20 is sleeved on the outer peripheral wall of the central tube 9. The first limiting ring 20 is welded to the aforementioned extension by ultrasonic means. The first limiting ring 20 abuts against the third sealing component 10 to limit the axial displacement of the third sealing component 10 along the central tube 9 and ensure that the third sealing component 10 reliably seals the gap between the central tube 9 and the third tube body 411.

[0082] See Figures 7-8 In one embodiment, the filter element further includes:

[0083] The fourth sealing component 30 is sandwiched between the outer wall of the central tube 9 and the inner wall of the first tube body 421 to seal the gap between the central tube 9 and the first tube body 421 and prevent water from flowing through.

[0084] The second limiting ring 40 is sleeved on the outer peripheral wall of the central tube 9. The second limiting ring 40 is welded to the first tube body 421 by ultrasonic welding. The second limiting ring 40 abuts against the fourth sealing component 30 to limit the axial displacement of the fourth sealing component 30 along the central tube 9 and ensure that the fourth sealing component 30 reliably seals the gap between the central tube 9 and the first tube body 421.

[0085] See Figures 7-8 In one embodiment, the filter element further includes:

[0086] Water distributor 50 is located in the lower cavity and is away from the first filter module 4. Water distributor 50 is connected to the first end of the central tube 9. Water distributor 50 has water distribution holes and water distribution cavity. Multiple water distribution holes are arranged in sequence around the water distribution cavity. Water distribution holes connect the lower cavity and the water distribution cavity. Water distribution cavity connects to the first end of the central tube 9. By installing a water distributor 50 connected to the first end of the central tube 9 in the lower cavity, and utilizing its structural design with multiple water distribution holes arranged sequentially around the water distribution cavity, the purified water output from the second filtration module can be evenly distributed in the lower cavity before being collected into the water distribution cavity, and finally transported to the outlet 62 through the central tube 9. This water distributor 50 structure not only achieves uniform distribution and efficient collection of purified water, avoiding local water flow overload, but also optimizes the fluid dynamics characteristics through the multi-hole surrounding layout, reducing pressure loss. At the same time, the direct connection design between the water distribution cavity and the central tube 9 ensures the continuity and stability of water flow, making the water flow distribution of the entire filter element structure more balanced and reasonable, which not only improves the filtration efficiency but also enhances the reliability of filter element operation, and effectively prevents water flow short circuits or local blockages.

[0087] In the case where the second filter media of the second filter module is granular filter media (such as resin), the pore size of the water distribution holes is smaller than the outer diameter of the granular filter media to prevent the granular filter media from entering the water distribution chamber.

[0088] See Figures 7-8 The filter element also includes:

[0089] The fifth sealing component 60 is sandwiched between the outer wall of the first end of the central tube 9 and the water distributor 50 to seal the gap between the central tube 9 and the water distributor 50 and prevent water from flowing through.

[0090] The third limiting ring 70 is sleeved on the outer wall of the first end of the central tube 9. The third limiting ring 70 is welded to the water distributor 50 by ultrasonic welding. The third limiting ring 70 abuts against the fifth sealing component 60 to limit the axial displacement of the fifth sealing component 60 along the central tube 9 and ensure that the fifth sealing component 60 reliably seals the gap between the central tube 9 and the water distributor 50.

[0091] See Figures 1-4 In one embodiment, the filter element further includes:

[0092] The third filter module 7 is located within the first filter module 4 and is connected to the second filter module and the outlet 62. The third filter module 7 is used to filter the purified water output from the second filter module. By adding the third filter module 7 inside the first filter module 4 and connecting it to the second filter module and the outlet 62, a three-stage series filtration structure is constructed. This allows the purified water output from the second filter module to undergo further deep filtration through the third filter module 7, significantly improving the quality of the output water. Furthermore, the design of the third filter module 7 being built into the first filter module 4 fully utilizes the internal space of the first filter module 4, achieving multi-stage filtration while maintaining a compact overall structure. It optimizes the water flow path, ensuring orderly connection between each filtration stage, thus improving filtration efficiency and extending the filter cartridge's lifespan.

[0093] See Figures 1-4 In one embodiment, when a third filter module 7 is provided, the first filter module 4 includes:

[0094] The first barrel 41 is connected to the filter barrel 1, and the first barrel 41 is sealed to the filter barrel 1 through the first sealing component 5. The first sealing component 5 divides the inner cavity 3 into an upper cavity and a lower cavity. The upper cavity is connected to the water inlet 61, and the lower cavity accommodates at least a part of the first barrel 41 and the second filter module.

[0095] End cap 42, end cap 42 connects to water channel adapter 6, end cap 42 and first tank body 41 form first cavity 43, first cavity 43 connects upper cavity and lower cavity, so that first filter module 4 connects to second filter module; and

[0096] The first filter material 44 is disposed inside the first cavity 43;

[0097] The third filter module 7 includes:

[0098] The second barrel 71 is sandwiched between the first barrel 41 and the end cap 42, and is located within the first cavity 43. The second barrel 71, the first barrel 41, and the end cap 42 form the second cavity, which connects to the second filter module and the water outlet 62.

[0099] The third filter media (not shown in the figure) is located within the second cavity. Thus, by constructing the first filter module 4 as a first cavity 43 structure formed by the first barrel 41 and the end cap 42, where the first barrel 41 directly connects to the filter barrel 1 to provide stable support, and the first sealing component 5 achieves a sealed fit between the first barrel 41 and the filter barrel 1, the inner cavity 3 is rationally divided into an upper cavity and a lower cavity. This double-layer cavity structure not only achieves optimized spatial layout of the two-stage filter modules but also makes the lower cavity structure accommodating the second filter module more compact. The end cap 42 connects to the water path adapter 6 to ensure a reliable connection between the first filter module 4 and the water path adapter 6. The first cavity 43 connects to the inlet 61 through the upper cavity to form a complete water inlet path, allowing raw water to directly enter the first filter media 44 of the first cavity 43 through the inlet 61 and the upper cavity for primary filtration, forming a highly efficient and rational inlet path. The water flow channel; the third filter module 7 is constructed as a structure consisting of a second barrel 71 and a third filter media. At the same time, the second cavity formed by the second barrel 71, the first barrel 41 and the end cap 42 accommodates the third filter media to achieve deep filtration and connects the second filter module with the outlet 62. This multi-layer nested structure realizes a three-stage progressive filtration function in a limited space, so that the water flow passes through the first filter media 44 for primary filtration, the second filter module for secondary filtration and the third filter media for fine filtration in sequence. This not only significantly improves the filtration efficiency and the quality of the effluent, but also optimizes the overall structural layout through a compact modular design, reduces connecting parts and reduces fluid resistance. At the same time, each filter module is independent yet organically combined, which facilitates production and assembly, and improves the reliability and service life of the filter element while ensuring the filtration effect.

[0100] In one embodiment, both the first filter media 44 and the third filter media can be activated carbon or carbon fiber, while the second filter media of the second filter module can be resin. In this way, the first filter module 4 pre-filters the raw water, effectively removing large particulate impurities and residual chlorine, significantly reducing the workload of the second filter module. The second filter module, as the main filter unit, can deeply trap harmful substances such as heavy metals and microorganisms, thereby purifying the water and obtaining purified water. The third filter module 7 then performs final taste optimization on the purified water, eliminating odors.

[0101] See Figures 3-4 When a third filter module 7 is provided, the connection method between the end cap 42 and the adapter is the same as described above. Figures 7-8 The structures shown are the same.

[0102] See Figures 3-4 When a third filter module 7 is provided, the connection method between the first end of the central tube 9 and the filter barrel 1 is described in [reference needed]. Figures 7-8The difference in the structure shown is the connection between the second end of the central tube 9 and the first barrel 41. Specifically, the third tube 411 of the first barrel 41 is located in the lower cavity, and the second end of the central tube 9 is inserted into the third tube 411 and connected to the second cavity to deliver purified water to the second cavity.

[0103] See Figure 3 In one embodiment, the filter element further includes:

[0104] The sixth sealing component 80 is sandwiched between the outer wall of the second barrel 71 and the inner wall of the first limiting part 412 of the first barrel 41 to seal the gap between the second barrel 71 and the first barrel 41 and prevent water from flowing through.

[0105] The seventh sealing component 90 is sandwiched between the outer wall of the second barrel body 71 and the inner wall of the second limiting part 422 of the end cap 42 to seal the gap between the second barrel body 71 and the end cap 42 and prevent water from flowing through.

[0106] A preferred embodiment of this utility model provides a water purifier, including the filter element described above.

[0107] The water purifier of this utility model, by employing the aforementioned filter barrel 1, also ensures that the first filter module 4 is not in contact with the filter cover 2 by connecting the first filter module 4 to the filter barrel 1 and separating it from the filter cover 2. When the filter cover 2 and the filter barrel 1 are connected by a rotary welding method, the rotation of the filter cover 2 during the rotary welding process will not cause the first filter module 4 to rotate, so that the first sealing component 5 maintains its original static sealing state. Therefore, the sealing surface of the first sealing component 5 will not be worn, ensuring the sealing reliability of the first sealing component 5. Thus, the first sealing component 5 reliably seals the gap between the first filter module 4 and the filter barrel 1, preventing water leakage and improving the water purification effect.

[0108] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0109] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0110] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A filter element, characterized in that, include: Filter barrel; A filter cover, which is connected to the filter barrel, and the filter cover and the filter barrel form an inner cavity; A first filter module, located within the inner cavity, connected to the filter cartridge, and spaced apart from the filter cover; and A first sealing component is sandwiched between the inner wall of the filter barrel and the outer wall of the first filter module to seal the gap between the inner wall of the filter barrel and the outer wall of the first filter module.

2. The filter element according to claim 1, characterized in that, The filter barrel is provided with a support part, which is located inside the inner cavity; The first filter module is connected to the support portion to connect the first filter module to the filter barrel.

3. The filter element according to claim 2, characterized in that, The number of support parts is multiple, and the multiple support parts are arranged sequentially around the axial center line of the first filter module.

4. The filter element according to claim 1, characterized in that, The filter cover and the filter barrel are connected together by rotary welding; And / or, the outer wall of the first filter module has a first positioning groove, the first positioning groove is arranged around the axial center line of the first filter module, and the first positioning groove cooperates with the first sealing component.

5. The filter element according to claim 1, characterized in that, The filter element also includes: The second filter module is located inside the inner cavity and is connected to the first filter module. The second filter module is used to filter the initial filtered water output by the first filter module.

6. The filter element according to claim 5, characterized in that, The filter element also includes: A water circuit adapter is provided on the filter cover and connected to the first filter module. The water circuit adapter has an inlet and an outlet. The inlet is connected to the first filter module and the outlet is connected to the second filter module.

7. The filter element according to claim 6, characterized in that, The first filter module includes: A first barrel body is connected to the filter barrel. The first barrel body is sealed to the filter barrel through a first sealing component. The first sealing component divides the inner cavity into an upper cavity and a lower cavity. The upper cavity is connected to the water inlet. The lower cavity accommodates at least a portion of the first barrel body and the second filter module. An end cap, wherein the end cap is disposed on the first barrel body and is connected to the water passage adapter, the end cap and the first barrel body forming a first cavity, the first cavity communicating with the upper cavity and the lower cavity; and The first filter material is disposed within the first cavity.

8. The filter element according to claim 6, characterized in that, The filter element also includes: The third filter module is located inside the first filter module and is connected to the second filter module and the water outlet. The third filter module is used to filter the purified water output by the second filter module.

9. The filter element according to claim 8, characterized in that, The first filter module includes: A first barrel body is connected to the filter barrel, and the first barrel body is sealed to the filter barrel through the first sealing component. The first sealing component divides the inner cavity into an upper cavity and a lower cavity. The upper cavity is connected to the water inlet, and the lower cavity accommodates at least a portion of the first barrel body and the second filter module. End cap, the end cap connecting the water circuit adapter, the end cap and the first barrel body forming a first cavity, the first cavity communicating with the upper cavity and the lower cavity; and The first filter material is disposed within the first cavity; The third filter module includes: A second barrel body is sandwiched between the first barrel body and the end cap, and is located within the first cavity. The second barrel body, the first barrel body, and the end cap form a second cavity, which connects to the second filter module and the water outlet. The third filter material is disposed in the second cavity.

10. A water purifier, characterized in that, The filter element includes any one of claims 1-9.

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