Integrated filter element, composite filter element and water purifier

Abstract

The application provides an integrated filter core, a composite filter core and a water purifier, which comprises a membrane support, a supporting portion, a first accommodating cavity and a first connecting head are arranged on the membrane support, the supporting portion, the first accommodating cavity and the first connecting head are sequentially arranged along the length direction of the membrane support, and the first connecting head is used for being connected with a filter barrel; a membrane filter core is arranged on the supporting portion; and a rear filter core is arranged in the first accommodating cavity, and the rear filter core is used for filtering water treated by the membrane filter core. Since the structure is an integrated structure of the membrane filter core and the rear filter core, the traditional split design is replaced, so that the two form a single assembly unit in the filter barrel. The integrated filter core realizes the continuous connection of the membrane filter core and the rear filter core through the membrane support. During assembly, only one insertion action is needed to complete the overall installation, so that the assembly process is simplified, and the production efficiency is improved.

Description

Technical Field

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

[0002] In traditional water purifier designs, composite filter cartridges typically consist of a filter cartridge, a pre-filter, a membrane filter, and a post-filter. The membrane filter and post-filter are often separate units, operating independently. This design necessitates two separate installation operations to complete the overall assembly of the filter cartridge, resulting in a cumbersome process and reduced production efficiency. Utility Model Content

[0003] This application provides an integrated filter element, a composite filter element, and a water purifier to solve the problems of cumbersome assembly processes and low production efficiency in related technologies. The technical solution is as follows:

[0004] In a first aspect, embodiments of this application provide an integrated filter element, comprising:

[0005] A membrane support, comprising a support portion, a first receiving cavity, and a first connector, wherein the support portion, the first receiving cavity, and the first connector are arranged sequentially along the length of the membrane support, and the first connector is used to connect to a filter cartridge.

[0006] Membrane filter element, the membrane filter element being disposed on the support portion; and

[0007] A post-filter element is disposed within the first receiving cavity and is used to filter water that has been treated by the membrane filter element.

[0008] In one embodiment, the integrated filter element further includes:

[0009] A first rear end cap covers the first end of the post-filter element along its length. A post-inlet channel is formed between the first rear end cap and the inner wall of the first receiving cavity. The post-inlet channel connects the water production side of the membrane filter element with the water inlet side of the post-filter element. The rear end cap is provided with a second connector that passes through the post-filter element and is used to connect to a filter canister.

[0010] The second rear end cap covers the second end of the rear filter element along its length. The outer side wall of the second rear end cap is sealed to the inner side wall of the first receiving cavity. The second rear end cap is provided with a third connector. The third connector is arranged around the second connector, and a rear water outlet channel is formed between the inner side wall of the third connector and the outer side wall of the second connector. The rear water outlet channel is connected to the water outlet side of the rear filter element.

[0011] In one embodiment, the first rear end cap has a first positioning groove that is adapted to a first end of the rear filter element in the length direction.

[0012] The second rear end cap has a second positioning groove, which is adapted to the second end of the rear filter element in the length direction.

[0013] In one embodiment, a first sealing ring is sandwiched between the outer wall of the second rear end cap and the inner wall of the first receiving cavity, and the first sealing ring is disposed around the second rear end cap.

[0014] In one embodiment, the membrane stent comprises:

[0015] A first membrane end cap, the first membrane end cap being provided with the first connector and a first inner cavity;

[0016] A second membrane end cap is inserted into the first inner cavity, and the second membrane end cap and the first membrane end cap form the first receiving cavity. The second membrane end cap has a first membrane filtration outlet channel, which connects to the inlet side of the post-filter cartridge.

[0017] A first tube body, the first end of the first tube body is connected to the second membrane end cap, the second end of the first tube body extends in a direction away from the second membrane end cap, the first tube body has a water passage hole and a second membrane filter water outlet channel, the second membrane filter water outlet channel connects the water passage hole and the first membrane filter water outlet channel.

[0018] The first membrane end cap, the second membrane end cap, and the first tube body form the support portion. The support portion has a third positioning groove. One end of the membrane filter element is inserted into the third positioning groove, and the membrane filter element is sleeved outside the first tube body. The water production side of the membrane filter element is connected to the water passage hole.

[0019] In one embodiment, the second membrane end cap is provided with a fourth connector, the fourth connector having a first membrane filter outlet channel, and the fourth connector being inserted into the first tube body.

[0020] In one embodiment, a second sealing ring is sandwiched between the outer wall of the fourth connector and the inner wall of the first tube, and the second sealing ring is arranged around the fourth connector.

[0021] In one embodiment, the membrane filter element includes a reverse osmosis membrane filter element. A first concentrate outlet channel is formed between the concentrate end of the reverse osmosis membrane filter element and the bottom wall of the second membrane end cap. The first concentrate outlet channel is connected to the concentrate end of the reverse osmosis membrane filter element. A second concentrate outlet channel is formed between the outer side wall of the second membrane end cap and the inner side wall of the first membrane end cap. The second concentrate outlet channel is connected to the first concentrate outlet channel. A third concentrate outlet channel is formed between the bottom walls of the first membrane end cap, the second membrane end cap, and the second rear end cap. The third concentrate outlet channel is connected to the second concentrate outlet channel. A fourth concentrate outlet channel is formed between the inner side wall of the first connector and the outer side wall of the third connector. The fourth concentrate outlet channel is used to connect the third concentrate outlet channel and the concentrate outlet.

[0022] Secondly, embodiments of this application provide a composite filter element, including the aforementioned integrated filter element.

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

[0024] A front housing abuts against the end of the membrane filter element that is away from the rear filter element, and the front housing has a second receiving cavity;

[0025] A pre-filter element, wherein the pre-filter element is disposed within the second receiving cavity;

[0026] A flow channel component, the first end of which is connected to the pre-filter housing, the second end of which passes through the membrane filter element, and the second end of which is connected to a first rear end cap located on the rear filter element. The flow channel component has a pre-inlet flow channel and a pre-outlet flow channel. The pre-inlet flow channel is used to connect the inlet side of the pre-filter element and the pre-inlet port. The pre-outlet flow channel is used to connect the outlet side of the pre-filter element and the pre-outlet port. The pre-inlet flow channel and the pre-outlet flow channel are coaxially arranged.

[0027] Thirdly, embodiments of this application provide a water purifier including the aforementioned integrated filter element.

[0028] The advantages or beneficial effects of the above technical solutions include at least the following:

[0029] This utility model discloses an integrated filter element, which integrates a support portion, a first receiving cavity, and a first connector for connecting to a filter cartridge on a membrane support, arranged sequentially along its length. The membrane filter element is fixed to the support portion and undertakes the main filtration function. The post-filter element is embedded in the first receiving cavity to perform deep treatment on the water filtered by the membrane filter element. The first connector connects to the filter cartridge to install the integrated filter element on the filter cartridge. Since this structure is an integrated structure that combines the membrane filter element and the post-filter element, replacing the traditional separate design, the two form a single assembly unit inside the filter cartridge. The integrated filter element achieves continuous connection between the membrane filter element and the post-filter element through the membrane support. During assembly, only one insertion action is required to complete the overall installation, thereby simplifying the assembly process and improving production efficiency.

[0030] 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

[0031] 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.

[0032] Figure 1 This is a three-dimensional structural diagram of the integrated filter element of this utility model;

[0033] Figure 2 This is a cross-sectional view of the integrated filter element of this utility model;

[0034] Figure 3 This is a three-dimensional structural diagram of the composite filter element of this utility model from a first-view perspective.

[0035] Figure 4 This is a three-dimensional structural diagram of the composite filter element of this utility model from a second perspective.

[0036] Figure 5 This is a cross-sectional view of the composite filter element of this utility model.

[0037] Figure Labels

[0038] 1. Membrane support; 11. First membrane end cap; 111. First connector; 12. Second membrane end cap; 121. First membrane filtration outlet channel; 122. Fourth connector; 13. First tube body; 131. Water passage; 132. Second membrane filtration outlet channel; 2. Membrane filter element; 3. Post-filter element; 31. First post-filter media; 32. Second post-filter media; 4. First post-filter end cap; 41. Second connector; 42. First positioning groove; 5. Second post-filter end cap; 51. Third connector; 52. Second positioning groove; 6. First concentrate outlet channel; 7. Second concentrate outlet channel ; 8. Third concentrate outlet channel; 9. Fourth concentrate outlet channel; 10. Pre-filter housing; 20. Pre-filter element; 201. First pre-filter media; 202. Second pre-filter media; 30. Channel component; 301. Second pipe body; 3011. Pre-inlet channel; 302. Third pipe body; 3021. Pre-outlet channel; 40. Filter barrel; 401. Barrel body; 4011. Second inner cavity; 4012. Pre-inlet; 4013. Pre-outlet; 4014. Membrane treatment inlet; 4015. Post-outlet; 4016. Concentrate outlet; 402. Barrel lid. Detailed Implementation

[0039] 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.

[0040] See Figures 1-2 This invention illustrates a preferred embodiment of an integrated filter element, comprising:

[0041] Membrane support 1, which is provided with a support part, a first receiving cavity and a first connector 111. The support part, the first receiving cavity and the first connector 111 are arranged sequentially along the length of the membrane support 1. The first connector 111 is used to connect with the filter bucket 40.

[0042] Membrane filter element 2, membrane filter element 2 is disposed on the support; and

[0043] The post-filter element 3 is located in the first receiving cavity and is used to filter the water after it has been treated by the membrane filter element 2.

[0044] This utility model discloses an integrated filter element, which integrates a support portion, a first receiving cavity, and a first connector 111 for connecting to a filter cartridge 40, arranged sequentially along the length of the membrane support 1. The membrane filter element 2 is fixed to the support portion and undertakes the main filtration function. The post-filter element 3 is embedded in the first receiving cavity to perform deep treatment on the water filtered by the membrane filter element 2. The first connector 111 is connected to the filter cartridge 40 to install the integrated filter element on the filter cartridge 40. Since this structure is an integrated structure that combines the membrane filter element 2 and the post-filter element 3, replacing the traditional split design, the two form a single assembly unit inside the filter cartridge 40. The integrated filter element achieves continuous connection between the membrane filter element 2 and the post-filter element 3 through the membrane support 1. The entire installation can be completed with only one insertion action during assembly, thereby simplifying the assembly process and improving production efficiency.

[0045] See Figure 2 In one embodiment, the integrated filter element further includes:

[0046] The first rear end cap 4 covers the first end of the rear filter element 3 along its length. A rear water inlet channel is formed between the first rear end cap 4 and the inner wall of the first receiving cavity. The rear water inlet channel connects the water production side of the membrane filter element 2 with the water inlet side of the rear filter element 3. The rear end cap is provided with a second connector 41, which passes through the rear filter element 3 and is used to connect with the filter canister 40.

[0047] The second rear end cap 5 covers the second end of the rear filter element 3 along its length. The outer side wall of the second rear end cap 5 is sealed to the inner side wall of the first receiving cavity. The second rear end cap 5 is provided with a third connector 51, which is arranged around the second connector 41. The inner side wall of the third connector 51 and the outer side wall of the second connector 41 form a rear water outlet channel, which connects the water outlet side of the rear filter element 3 with the rear water outlet of the filter barrel. By setting a second connector 41 connected to the filter barrel 40 on the first rear end cap 4 to form a rear inlet channel connecting the water production side of the membrane filter element 2 and the water inlet side of the post-filter element 3, and setting a third connector 51 around the second connector 41 on the second rear end cap 5, a rear outlet channel is formed between the two and connected to the outlet side of the post-filter element 3. This integrated channel structure efficiently integrates water inlet and outlet functions inside the end cap, greatly simplifies the internal pipeline connection of the integrated filter element, enhances sealing reliability, reduces leakage risk, and only requires one docking to achieve synchronous connection of multiple channels during assembly, significantly improving production efficiency and structural stability of the integrated filter element. In addition, since the first rear end cap 4 is connected to the filter barrel 40 through the second connector 41, and the second rear end cap 5 is connected to the filter barrel 40 through the third connector 51, the connection stability between the integrated filter element and the filter barrel 40 can be enhanced, thereby ensuring that the integrated filter element is firmly installed inside the filter barrel 40.

[0048] See Figure 2 In one embodiment, the first rear end cap 4 has a first positioning groove 42, which is adapted to the first end of the rear filter element 3 in the length direction to position the first end of the rear filter element 3 in the length direction. This facilitates the rapid assembly of the first rear end cap 4 and the rear filter element 3, and also increases the connection stability between the first rear end cap 4 and the rear filter element 3.

[0049] The second rear end cap 5 has a second positioning groove 52, which is adapted to the second end of the rear filter element 3 in the length direction to position the second end of the rear filter element 3 in the length direction. This facilitates the rapid assembly of the second rear end cap 5 and the rear filter element 3, and also increases the connection stability between the second rear end cap 5 and the rear filter element 3.

[0050] Specifically, in one embodiment, the first end of the post-filter element 3 along its length is connected to the inner wall of the first positioning groove 42 by applying hot melt adhesive. That is, the first end of the post-filter element 3 along its length is connected to the inner wall of the first positioning groove 42 by adhesive, so as to ensure that the post-filter element 3 and the first post-end cover 4 are reliably connected together, and at the same time, the post-filter element 3 and the first post-end cover 4 are sealed together without the need for a sealing component.

[0051] Similarly, the second end of the post-filter element 3 along its length is connected to the inner wall of the second positioning groove 52 by hot melt adhesive. That is, the second end of the post-filter element 3 along its length is connected to the inner wall of the second positioning groove 52 by glue, so as to ensure that the post-filter element 3 and the second post end cover 5 are reliably connected together, and at the same time, the post-filter element 3 and the second post end cover 5 are sealed together without the need for sealing parts.

[0052] See Figure 2 In one embodiment, the post-filter 3 includes:

[0053] The first post-filter material 31 is connected to the post-inlet channel. The first post-filter material 31 is used to remove odors from the water filtered by the membrane filter element 2 in order to optimize the taste of drinking water.

[0054] The second post-filter material 32 is wrapped by the first post-filter material 31 and is connected to the post-outlet water channel. The second post-filter material 32 is used to intercept ultrafine particles in the water filtered by the first post-filter material 31 to improve the appearance and safety of drinking water.

[0055] Specifically, in one embodiment, the first post-filter material 31 is a carbon rod filter element or a carbon fiber filter element, while the second post-filter material 32 is a meltblown PP cotton filter element.

[0056] In one embodiment, a first sealing ring (not shown in the figure) is sandwiched between the outer wall of the second rear end cap 5 and the inner wall of the first receiving cavity. The first sealing ring is arranged around the second rear end cap 5 to seal the gap between the second rear end cap 5 and the membrane support 1 to prevent water leakage.

[0057] See Figures 1-2 In one embodiment, the membrane stent 1 includes:

[0058] A first membrane end cap 11 is provided with a first connector 111 and a first inner cavity;

[0059] The second membrane end cap 12 is inserted into the first inner cavity, and the second membrane end cap 12 and the first membrane end cap 11 form a first receiving cavity. The second membrane end cap 12 has a first membrane filtration outlet channel 121, which is connected to the water inlet side of the post-filter cartridge 3; and

[0060] The first tube 13 has a first end connected to the second membrane end cap 12, and the second end of the first tube 13 extends in a direction away from the second membrane end cap 12. The first tube 13 has a water passage 131 and a second membrane filter water outlet channel 132, and the second membrane filter water outlet channel 132 connects the water passage 131 and the first membrane filter water outlet channel 121.

[0061] The support portion is formed by the first membrane end cap 11, the second membrane end cap 12, and the first tube body 13. The support portion has a third positioning groove, one end of the membrane filter element 2 is inserted into the third positioning groove, and the membrane filter element 2 is sleeved outside the first tube body 13. The product water side of the membrane filter element 2 is connected through a water hole 131. The membrane support 1 adopts a modular structure composed of the first membrane end cap 11, the second membrane end cap 12, and the first tube body 13. The first membrane end cap 11 and the second membrane end cap 12, inserted into its first inner cavity, together form a first receiving cavity. This facilitates the assembly process by first inserting the post-filter element 3 into the first receiving cavity and then installing the second membrane end cap 12, thereby reliably confining the post-filter element 3 within the first receiving cavity and improving assembly convenience. Meanwhile, the first tube 13 is connected to the second membrane end cap 12 and extends outward to form a support structure. The first tube 13 is provided with a water passage hole 131 and a second membrane filtration water outlet channel 132 that communicates with the first membrane filtration water outlet channel 121, realizing direct communication between the water production side of the membrane filter element 2 and the water inlet side of the post-filter element 3. This integrated channel design significantly reduces the number of external pipes and sealing points, which not only enhances the overall sealing reliability but also improves space utilization efficiency. In addition, the membrane filter element 2 is precisely positioned and installed and supported by the third positioning groove, which further strengthens the structural stability of the integrated filter element and greatly improves the ease of assembly and production efficiency.

[0062] See Figure 2In one embodiment, the second membrane end cap 12 is provided with a fourth connector 122, which has a first membrane filtration outlet water flow channel 121. The fourth connector 122 is inserted into the first tube body 13, that is, the fourth connector 122 has both connection and flow guiding functions. The fourth connector 122 is inserted into the first tube body 13 and forms the first membrane filtration outlet water flow channel 121, which realizes the efficient and direct delivery of membrane filtration water to subsequent treatment stages. It effectively reduces external pipe connections and additional sealing links, improves the integration of the flow channel and space utilization, and enhances the structural continuity and sealing reliability between the second membrane end cap 12 and the first tube body 13, reduces the risk of leakage, simplifies the overall assembly process, and helps to improve the production efficiency and long-term stability of the filter element.

[0063] In one embodiment, a second sealing ring (not shown in the figure) is sandwiched between the outer wall of the fourth connector 122 and the inner wall of the first tube 13. The second sealing ring is arranged around the fourth connector 122 to seal the gap between the fourth connector 122 and the first tube 13 to prevent water leakage.

[0064] See Figure 2In one embodiment, the membrane filter element 2 includes a reverse osmosis membrane filter element 2. A first concentrate outlet channel 6 is formed between the concentrate end of the reverse osmosis membrane filter element 2 and the bottom wall of the second membrane end cap 12. The first concentrate outlet channel 6 is connected to the concentrate end of the reverse osmosis membrane filter element 2. A second concentrate outlet channel 7 is formed between the outer side wall of the second membrane end cap 12 and the inner side wall of the first membrane end cap 11. The second concentrate outlet channel 7 is connected to the first concentrate outlet channel 6. A third concentrate outlet channel 8 is formed between the bottom wall of the first membrane end cap 11, the bottom wall of the second membrane end cap 12, and the bottom wall of the second rear end cap 5. The third concentrate outlet channel 8 is connected to the second concentrate outlet channel 7. A fourth concentrate outlet channel 9 is formed between the inner side wall of the first connector 111 and the outer side wall of the third connector 51. The fourth concentrate outlet channel 9 is used to connect the third concentrate outlet channel 8 and the concentrate outlet 4016 of the filter tank 40. Thus, by setting a first concentrated water outlet channel 6 between the concentrated water end of the reverse osmosis membrane filter element 2 and the bottom wall of the second membrane end cap 12, and forming a second concentrated water outlet channel 7 between the inner side walls of the second membrane end cap 12 and the first membrane end cap 11, and utilizing the gap between the bottom walls of the first membrane end cap 11, the second membrane end cap 12 and the second rear end cap 5 to form a third concentrated water outlet channel 8, and finally guiding the concentrated water to the concentrated water outlet 4016 of the filter tank 40 through the fourth concentrated water outlet channel 9 between the inner side walls of the first connector 111 and the third connector 51, a highly integrated, layered, closed drainage path is formed. This structure makes full use of the assembly gaps between the end caps and the connectors to naturally form multi-stage channels, without the need for additional external pipelines, greatly improving space utilization and component integration, significantly reducing connection interfaces and sealing points, reducing leakage risk, while ensuring smooth concentrated water discharge and stable operation of the integrated filter element, effectively improving the structural compactness, production assembly efficiency and reliability of the integrated filter element.

[0065] Of course, in other embodiments, the membrane filter element 2 may also include structures such as nanofiltration or ultrafiltration filters.

[0066] See Figures 3-5 This invention illustrates a preferred embodiment of a composite filter element, comprising the aforementioned integrated filter element.

[0067] The composite filter element of this utility model, due to the adoption of the aforementioned integrated filter element, also integrates a support part, a first receiving cavity, and a first connector 111 for connecting the filter cartridge 40, arranged sequentially along the length of the membrane support 1. The membrane filter element 2 is fixed to the support part to undertake the main filtration function, and the post-filter element 3 is embedded in the first receiving cavity to achieve deep treatment of the water filtered by the membrane filter element 2. The first connector 111 is connected to the filter cartridge 40 to realize the installation of the integrated filter element on the filter cartridge 40. Since this structure is an integrated structure that combines the membrane filter element 2 and the post-filter element 3, replacing the traditional split design, the two form a single assembly unit inside the filter cartridge 40. The integrated filter element realizes the continuous connection between the membrane filter element 2 and the post-filter element 3 through the membrane support 1. During assembly, only one insertion action is required to complete the overall installation, thereby simplifying the assembly process and improving production efficiency.

[0068] See Figure 5 In one embodiment, the composite filter element further includes:

[0069] The front housing 10 abuts against the end of the membrane filter element 2 that is away from the rear filter element 3, and the front housing 10 has a second receiving cavity;

[0070] The pre-filter element 20 is disposed in the second receiving cavity;

[0071] The flow channel component 30 has a first end connected to the front housing 10 and a second end passing through the membrane filter element 2. The second end of the flow channel component 30 is connected to the first rear end cap 4 located on the rear filter element 3. The flow channel component 30 has a front inlet flow channel 3011 and a front outlet flow channel 3021. The front inlet flow channel 3011 is used to connect the inlet side of the front filter element 20 and the front inlet 4012 of the filter barrel 40. The front outlet flow channel 3021 is used to connect the outlet side of the front filter element 20 and the front outlet 4013 of the filter barrel. The front inlet flow channel 3011 and the front outlet flow channel 3021 are coaxially arranged. By setting a front housing 10 that abuts against the membrane filter element 2 and placing the pre-filter element 20 in its second receiving cavity, and employing a flow channel component 30 that penetrates the membrane filter element 2 and connects to the first rear end cap 4, the flow channel component 30 has a coaxially arranged front inlet flow channel 3011 and a front outlet flow channel 3021, respectively connecting the inlet side of the pre-filter element 20 to the front inlet 4012 of the filter cartridge 40, and the outlet side of the pre-filter element 20 to the front outlet 4013 of the filter cartridge 40; this highly integrated coaxial dual-flow channel design tightly connects the three-stage process of pre-filtration, membrane filtration, and post-filtration in space, realizing the functional integration of raw water introduction, pre-treatment, and product water transportation, significantly reducing the number of external pipes and interfaces, significantly reducing the risk of leakage, enhancing system sealing and space utilization, and simplifying the overall filter element. The assembly process improves production efficiency and structural reliability. In addition, by adopting a coaxial nested integrated design for the pre-filter inlet channel 3011 and the pre-filter outlet channel 3021, replacing the traditional parallel dual-pipe structure, and utilizing the concentric circle spatial layout in the channel component 30, the radial dimension of the pre-filter assembly is significantly reduced while ensuring the function of connecting the inlet and outlet sides of the pre-filter cartridge 20 respectively. This reduces the overall space occupied by the pre-filter assembly, making it more suitable for the miniaturization and integration requirements of water purifiers. At the same time, by integrating the pre-filter housing 10, the pre-filter cartridge 20, and the channel component 30 into a modular pre-filter assembly, only one installation step is required when installing the pre-filter assembly into the composite filter cartridge. This greatly reduces the number of parts and connection points, reduces assembly complexity, and thus improves production efficiency and product consistency.

[0072] See Figure 5 In one embodiment, the flow channel component 30 includes:

[0073] The second pipe 301 has its first end passing through the front housing 10 and extending into the front filter element 20, and its second end connected to the filter barrel 40. The second pipe 301 also has the aforementioned front outlet channel 3021.

[0074] The third tube 302 has its first end connected to the front housing 10, and its second end is sequentially connected to the fourth connector 122 and the second connector 41. The third tube 302 is sleeved outside the second tube 301, and the third tube 302 and the second tube 301 form a front water inlet channel 3011. Thus, by setting the flow channel component 30 as a concentric sleeve structure consisting of a second tube 301 and a third tube 302 sleeved outside it, wherein the second tube 301 independently forms a pre-outlet flow channel 3021 for guiding the clean water filtered by the pre-filter cartridge 20 to the pre-outlet 4013, and the annular gap between the third tube 302 and the second tube 301 forms a pre-inlet flow channel 3011 for transporting raw water from the pre-inlet 4012 to the inlet side of the pre-filter cartridge 20; this integrated concentric sleeve structure makes full use of the radial space, which can avoid occupying too much radial space of the membrane filtration assembly and ensure that the membrane filter material is filled with enough, while greatly saving the volume required for the internal layout of the composite filter cartridge, and reducing external connecting parts, making the flow channel structure more compact and the sealing reliability higher.

[0075] See Figure 2 In one embodiment, the pre-filter 20 includes:

[0076] The first pre-filter media 201 is used to remove larger particulate suspended impurities from the raw water, thereby protecting the downstream filter media. The first pre-filter media 201 is provided with the aforementioned inlet side; and

[0077] The second pre-filter material 202 is wrapped by the first pre-filter material 201. The second pre-filter material 202 has a central hole, and the wall of the central hole forms the water outlet side. The second pre-filter material 202 is used to remove residual chlorine, organic pollutants and odors from the water filtered by the first pre-filter material 201.

[0078] Specifically, the first pre-filter material 201 is a PP cotton filter element, preferably a pleated PP cotton filter element, while the second pre-filter material 202 can be a carbon rod filter element or a carbon fiber filter element.

[0079] A preferred embodiment of this utility model provides a water purifier, including the aforementioned integrated filter element.

[0080] The water purifier of this utility model adopts the aforementioned integrated filter element. It integrates a support portion, a first receiving cavity, and a first connector 111 for connecting to the filter cartridge 40, arranged sequentially along the length of the membrane support 1. The membrane filter element 2 is fixed to the support portion to perform the main filtration function. The post-filter element 3 is embedded in the first receiving cavity to perform deep treatment on the water filtered by the membrane filter element 2. The first connector 111 connects to the filter cartridge 40 to install the integrated filter element onto the filter cartridge 40. Since this structure is an integrated structure combining the membrane filter element 2 and the post-filter element 3, replacing the traditional separate design, the two form a single assembly unit inside the filter cartridge 40. This integrated filter element achieves continuous connection between the membrane filter element 2 and the post-filter element 3 through the membrane support 1. During assembly, only one insertion action is required to complete the overall installation, thereby simplifying the assembly process and improving production efficiency.

[0081] See Figures 3-5 In one embodiment, the composite filter element further includes:

[0082] Filter canister 40 has a second inner cavity 4011, a pre-filter inlet 4012, a pre-filter outlet 4013, a membrane treatment inlet 4014, a post-filter outlet 4015, and a concentrate outlet. The second inner cavity 4011 accommodates the pre-filter assembly and the integrated filter element. The pre-filter inlet 4012 is connected to the pre-filter inlet channel 3011, the pre-filter outlet 4013 is connected to the pre-filter outlet channel 3021, and the membrane treatment inlet 4014 is connected to... The pre-filter outlet 4013 and the post-filter outlet 4015 are connected to the outlet side of the post-filter assembly. Thus, raw water enters the pre-filter assembly from the pre-filter inlet 4012, undergoes preliminary filtration by its pre-filter element 20, and then flows out from the pre-filter outlet 4013. Next, it flows into the integrated filter element through the membrane treatment inlet 4014 and undergoes fine filtration by its membrane filter element 2. Then, it is sent to the post-filter element 3 for post-purification and finally output from the post-filter outlet 4015.

[0083] See Figures 3-5 In one embodiment, the filter cartridge 40 includes:

[0084] The tank body 401 has the aforementioned second inner cavity 4011, a pre-filter inlet 4012, a pre-filter outlet 4013, a membrane treatment inlet 4014, a post-filter outlet 4015, and a concentrate outlet 4016. The pre-filter inlet 4012, pre-filter outlet 4013, membrane treatment inlet 4014, post-filter outlet 4015, and concentrate outlet 4016 are all located at the first end of the tank body 401. The second end of the tank body 401 has a mounting port that communicates with the second inner cavity 4011. The mounting port is used for the pre-filter assembly and the integrated filter element to enter and exit the second inner cavity 4011.

[0085] The lid 402 is located at the second end of the body 401 and closes the installation port to confine the pre-filter assembly and the integrated filter element inside the filter canister 40.

[0086] 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.

[0087] 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.

[0088] 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. An integrated filter element, characterized in that, include: A membrane support, comprising a support portion, a first receiving cavity, and a first connector, wherein the support portion, the first receiving cavity, and the first connector are arranged sequentially along the length of the membrane support, and the first connector is used to connect to a filter cartridge. Membrane filter element, the membrane filter element being disposed on the support portion; and A post-filter element is disposed within the first receiving cavity and is used to filter water that has been treated by the membrane filter element.

2. The integrated filter element according to claim 1, characterized in that, The integrated filter element also includes: A first rear end cap covers the first end of the post-filter element along its length. A post-inlet channel is formed between the first rear end cap and the inner wall of the first receiving cavity. The post-inlet channel connects the water production side of the membrane filter element with the water inlet side of the post-filter element. The rear end cap is provided with a second connector that passes through the post-filter element and is used to connect to a filter canister. The second rear end cap covers the second end of the rear filter element along its length. The outer side wall of the second rear end cap is sealed to the inner side wall of the first receiving cavity. The second rear end cap is provided with a third connector. The third connector is arranged around the second connector, and a rear water outlet channel is formed between the inner side wall of the third connector and the outer side wall of the second connector. The rear water outlet channel is connected to the water outlet side of the rear filter element.

3. The integrated filter element according to claim 2, characterized in that, The first rear end cap has a first positioning groove, which is adapted to the first end of the rear filter element in the length direction; The second rear end cap has a second positioning groove, which is adapted to the second end of the rear filter element in the length direction.

4. The integrated filter element according to claim 2, characterized in that, A first sealing ring is sandwiched between the outer wall of the second rear end cap and the inner wall of the first receiving cavity, and the first sealing ring is arranged around the second rear end cap.

5. The integrated filter element according to claim 2, characterized in that, The membrane stent comprises: A first membrane end cap, the first membrane end cap being provided with the first connector and a first inner cavity; A second membrane end cap is inserted into the first inner cavity, and the second membrane end cap and the first membrane end cap form the first receiving cavity. The second membrane end cap has a first membrane filtration outlet channel, which connects to the inlet side of the post-filter cartridge. A first tube body, the first end of the first tube body is connected to the second membrane end cap, the second end of the first tube body extends in a direction away from the second membrane end cap, the first tube body has a water passage hole and a second membrane filter water outlet channel, the second membrane filter water outlet channel connects the water passage hole and the first membrane filter water outlet channel. The first membrane end cap, the second membrane end cap, and the first tube body form the support portion. The support portion has a third positioning groove. One end of the membrane filter element is inserted into the third positioning groove, and the membrane filter element is sleeved outside the first tube body. The water production side of the membrane filter element is connected to the water passage hole.

6. The integrated filter element according to claim 5, characterized in that, The second membrane end cap is provided with a fourth connector, which has a water outlet channel of the first membrane filter and is inserted into the first tube body.

7. The integrated filter element according to claim 6, characterized in that, The membrane filter element includes a reverse osmosis membrane filter element. A first concentrate outlet channel is formed between the concentrate end of the reverse osmosis membrane filter element and the bottom wall of the second membrane end cap. The first concentrate outlet channel is connected to the concentrate end of the reverse osmosis membrane filter element. A second concentrate outlet channel is formed between the outer side wall of the second membrane end cap and the inner side wall of the first membrane end cap. The second concentrate outlet channel is connected to the first concentrate outlet channel. A third concentrate outlet channel is formed between the bottom walls of the first membrane end cap, the second membrane end cap, and the second rear end cap. The third concentrate outlet channel is connected to the second concentrate outlet channel. A fourth concentrate outlet channel is formed between the inner side wall of the first connector and the outer side wall of the third connector. The fourth concentrate outlet channel is used to connect the third concentrate outlet channel and the concentrate outlet.

8. A composite filter element, characterized in that, Includes the integrated filter element according to any one of claims 1-7.

9. The composite filter element according to claim 8, characterized in that, The composite filter element also includes: A front housing abuts against the end of the membrane filter element that is away from the rear filter element, and the front housing has a second receiving cavity; A pre-filter element, wherein the pre-filter element is disposed within the second receiving cavity; A flow channel component, the first end of which is connected to the pre-filter housing, the second end of which passes through the membrane filter element, and the second end of which is connected to a first rear end cap located on the rear filter element. The flow channel component has a pre-inlet flow channel and a pre-outlet flow channel. The pre-inlet flow channel is used to connect the inlet side of the pre-filter element and the pre-inlet port. The pre-outlet flow channel is used to connect the outlet side of the pre-filter element and the pre-outlet port. The pre-inlet flow channel and the pre-outlet flow channel are coaxially arranged.

10. A water purifier, characterized in that, Includes the integrated filter element according to any one of claims 1-7.

Images