Filter element assembly and water purification equipment

Abstract

The utility model discloses a filter element assembly and water purification equipment and relates to the technical field of water purification, the filter element assembly comprises a filter bottle, an end cover and a filter element body, a cavity is formed in the filter bottle, an opening is formed in one end of the cavity, and a limiting groove is formed in the inner wall of the end, away from the opening, of the cavity; the end cover is connected with the end, provided with the opening, of the filter bottle, and a limiting hole is formed in the end cover; the end cover is further provided with a water inlet end and a water outlet end, and the water outlet end is communicated with the limiting hole. The filter element body is arranged in the cavity, one end of the filter element body is in interference fit with the limiting groove, and the other end of the filter element body is in interference fit with the limiting hole; a water inlet channel is formed between the filter element and the inner wall of the cavity and is communicated with the water inlet end; a water outlet channel is formed in the filter element body and is communicated with the water outlet end. According to the technical scheme, the two ends of the filter element body are in interference fit with the limiting groove in the inner wall of the filter bottle and the limiting hole in the end cover correspondingly, parts of the filter element assembly are reduced, and the purposes of simplifying the assembly steps and improving the production efficiency are achieved.

Description

Technical Field

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

[0002] Currently, filter cartridge assemblies used in water purifiers generally include a filter cartridge body, end caps, and a housing. The filter cartridge body includes a filter element, an upper cover, and a lower cover. One end of the filter element needs to be bonded to the upper cover, and the other end needs to be bonded to the lower cover. The filter cartridge body is then assembled into the housing. During installation, the upper end of the filter cartridge body is assembled and connected to the end cap with a sealing ring, and the lower end of the filter cartridge body is assembled and connected to the inner wall of the housing with a sealing ring. Finally, the housing and end cap are sealed by heat fusion. Existing filter cartridge assemblies suffer from complex overall structure and low assembly efficiency. Utility Model Content

[0003] The main purpose of this application is to propose a filter element assembly and water purification equipment, which aims to solve the problems of complex overall structure and low assembly efficiency of existing filter element assemblies.

[0004] To achieve the above objectives, the filter element assembly proposed in this application includes:

[0005] A filter bottle, wherein the filter bottle has a cavity, one end of the cavity has an opening, and the inner wall of the end of the cavity away from the opening has a limiting groove;

[0006] An end cap is provided, which is connected to one end of the filter bottle that has an opening. The end cap has a limiting hole inside. The end cap also has a water inlet and a water outlet, and the water outlet communicates with the limiting hole.

[0007] The filter element body is disposed in the cavity. One end of the filter element body is interference-fitted with the limiting groove, and the other end of the filter element body is interference-fitted with the limiting hole. A water inlet channel is formed between the filter element and the inner wall of the cavity, and the water inlet channel is connected to the water inlet end. A water outlet channel is formed inside the filter element body, and the water outlet channel is connected to the water outlet end.

[0008] In one embodiment, the inner wall of the cavity is provided with a first extension section extending toward one end of the filter element, the first extension section forming the limiting groove around the filter element body, and the first extension section being press-fitted with one end of the outer surface of the filter element body.

[0009] In one embodiment, the inner wall of the cavity is provided with a second extension section extending toward the water outlet channel, the second extension section being at least partially located within the water outlet channel, and at least a portion of the outer surface of the second extension section being interference-fitted with the inner wall of the water outlet channel.

[0010] In one embodiment, the second extension has a perforated structure in the middle.

[0011] In one embodiment, the filter element body includes a main body segment and a connecting segment. One end of the main body segment is connected to the limiting groove, and the other end of the main body segment is connected to one end of the connecting segment. The connecting segment is connected to the limiting hole. The diameter of the main body segment is larger than the diameter of the connecting segment, and the water outlet channel passes through the main body segment and the connecting segment.

[0012] In one embodiment, the end cap has a third extension extending toward one end of the main body section, the limiting hole is formed inside the third extension, the connecting section is located inside the limiting hole, and the outer surface of the connecting section is interference-fitted with the inner wall of the limiting hole.

[0013] In one embodiment, the end face where the main body segment connects to the connecting segment forms an abutment surface, and the end of the third extension segment abuts against the abutment surface.

[0014] In one embodiment, the main body segment and the connecting segment are an integral structure.

[0015] In one embodiment, the filter element body is made of polypropylene cotton; and / or, the filter bottle and the end cap are connected by spin welding.

[0016] This application also proposes a water purification device, including a filter element assembly as described above.

[0017] The technical solution of this application reduces the need for additional fasteners or complex connection methods by using interference fits between the two ends of the filter element body and the limiting grooves on the inner wall of the filter bottle and the limiting holes inside the end cap, thereby simplifying the filter element assembly and the assembly steps. A water inlet channel is naturally formed between the filter element body and the inner wall of the filter bottle, with the inlet end connected to the water inlet channel. An outlet channel is formed inside the filter element body, connected to the outlet end. Specifically, the fluid to be filtered enters the cavity from the inlet end, flows through the inlet channel, and is filtered by the filter element body to form filtered fluid. The filtered fluid flows from the outlet channel to the outlet end, and finally, the filtered fluid is output from the outlet end to the outside of the filter element assembly. This filter element assembly provides clear positioning for the filter element body by utilizing the limiting grooves on the inner wall of the filter bottle and the limiting holes inside the end cap, ensuring that the filter element can be quickly and accurately placed in position during assembly. This avoids assembly difficulties caused by inaccurate positioning, greatly improving assembly efficiency and offering advantages such as simple and compact structure and ease of assembly. Attached Figure Description

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

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the filter element assembly provided in this application.

[0020] Explanation of icon numbers:

[0021] 1. Filter bottle; 11. Limiting groove; 12. First extension section; 13. Second extension section; 131. Hole structure; 2. End cap; 21. Limiting hole; 22. Water inlet end; 23. Water outlet end; 24. Third extension section; 3. Filter element body; 31. Main body section; 32. Connecting section; 33. Abutment surface; 4. Water inlet channel; 5. Water outlet channel.

[0022] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0025] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0026] Currently, filter cartridge assemblies used in water purifiers generally include a filter cartridge body, end caps, and a housing. The filter cartridge body includes a filter element, an upper cover, and a lower cover. One end of the filter element needs to be bonded to the upper cover, and the other end needs to be bonded to the lower cover. The filter cartridge body is then assembled into the housing. During installation, the upper end of the filter cartridge body is assembled and connected to the end cap with a sealing ring, and the lower end of the filter cartridge body is assembled and connected to the inner wall of the housing with a sealing ring. Finally, the housing and end cap are sealed by heat fusion. Existing filter cartridge assemblies suffer from complex overall structure and low assembly efficiency.

[0027] To address the aforementioned problems, this application proposes a filter element assembly.

[0028] Please see Figure 1 In one embodiment of this application, the filter element assembly includes a filter bottle 1, an end cap 2, and a filter element body 3. The filter bottle 1 has a cavity with an opening at one end and a limiting groove 11 on the inner wall of the end of the cavity away from the opening. The end cap 2 is connected to the end of the filter bottle 1 with the opening and has a limiting hole 21 inside. The end cap 2 also has a water inlet end 22 and a water outlet end 23, and the water outlet end 23 communicates with the limiting hole 21. The filter element body 3 is disposed in the cavity, with the limiting groove 11 at one end of the filter element body 3 being press-fitted, and the other end of the filter element body 3 being press-fitted with the limiting hole 21. A water inlet channel 4 is formed between the filter element and the inner wall of the cavity, and the water inlet channel 4 communicates with the water inlet end 22. A water outlet channel 5 is formed inside the filter element body 3, and the water outlet channel 5 communicates with the water outlet end 23.

[0029] In the above structure, by interfering with the limiting groove 11 on the inner wall of the filter bottle 1 and the limiting hole 21 inside the end cap 2 at both ends of the filter element body 3, the use of additional fasteners for connection is reduced, simplifying the overall structure of the filter element assembly and thus achieving the purpose of simplifying the assembly steps of the filter element assembly; wherein, a water inlet channel 4 is formed between the filter element body 3 and the inner wall of the cavity of the filter bottle 1, and the water inlet end 22 is connected to the water inlet channel 4; a water outlet channel 5 is formed inside the filter element body 3, and the water outlet channel 5 is connected to the water outlet end 23; specifically, the fluid to be filtered enters the cavity from the water inlet end 22, and the fluid to be filtered... After the filter fluid flows through the inlet channel 4, it is filtered by the filter element body 3 and forms a filter fluid. The filter fluid flows from the outlet channel 5 to the outlet end 23, and finally the filter fluid is output from the outlet end 23 to the outside of the filter element assembly. The filter element assembly provides a positioning function for the filter element body 3 by using the limiting groove 11 on the inner wall of the filter bottle 1 and the limiting hole 21 inside the end cap 2. This enables the filter element body 3, the filter bottle 1 and the end cap 2 to achieve quick matching, avoiding the assembly difficulties caused by inaccurate positioning, greatly improving the assembly efficiency, and has the advantages of simple structure, compactness and easy assembly.

[0030] In one embodiment, the inner wall of the cavity is provided with a first extension section 12 extending toward one end of the filter element, the first extension section 12 forming a limiting groove 11 around the filter element body 3, and the first extension section 12 is interference-fitted with one end of the outer surface of the filter element body 3.

[0031] In the above structure, by using an interference fit between the first extension section 12 and one end of the filter element body 3, the additional fasteners required in the traditional structure are eliminated, simplifying the overall structure. The first extension section 12 forms a limiting groove 11 around the filter element, which is inserted into the limiting groove 11 during assembly. The interference fit between the first extension section 12 and the filter element ensures that the filter element body 3 is stably fixed within the cavity. Furthermore, the tight fit between the first extension section 12 and the filter element body 3 makes the space between them more compact, reducing the movement of the filter element body 3 within the cavity and enhancing the overall structural stability. The limiting groove 11 not only serves a fixing function but also has a guiding function, guiding the filter element body 3 to be correctly installed, improving assembly efficiency. In addition, the first extension section 12 provides additional support for the filter element body 3, making it more stable within the cavity and less prone to displacement due to water flow impact. Furthermore, due to the interference fit between the first extension section 12 and the filter element body 3, the sealing between the filter element body 3 and the first extension section 12 is better, which avoids fluid bypass at the connection between the filter element body 3 and the first extension section 12, ensuring that all fluids to be filtered are filtered through the filter element body 3.

[0032] In one embodiment, the inner wall of the cavity is provided with a second extension section 13 extending toward the water outlet channel 5. The second extension section 13 is at least partially located inside the water outlet channel 5, and at least part of the outer surface of the second extension section 13 is interference-fitted with the inner wall of the water outlet channel 5.

[0033] In the above structure, the outer surface of the second extension 13 is press-fitted with the inner wall of the outlet channel 5, which improves the sealing between the filter element body 3 and the cavity, preventing fluid bypass at the connection between the filter element body 3 and the second extension 13. Furthermore, the press-fit between the second extension 13 and the outlet channel 5 eliminates the need for assembly components such as sealing rings and retaining rings required in traditional structures, simplifying the overall structure of the filter element assembly, reducing the number of parts, and making the assembly process simpler and more efficient. Additionally, the second extension 13 extends into the outlet channel 5, providing additional support for the filter element body 3, making it more stable under the impact of water flow and less prone to deformation or damage.

[0034] In one embodiment, the second extension 13 has a hole structure 131 in the middle.

[0035] In the above structure, by setting a hole in the middle of the second extension section 13, the amount of material used can be reduced, thereby reducing the production cost of the filter element assembly; in addition, the addition of the hole structure 131 can also make the stress distribution of the second extension section 13 more uniform when under stress, avoid damage to the second extension section 13 due to stress concentration, and enhance the structural stability of the second extension section 13.

[0036] In one embodiment, the filter body 3 includes a main body section 31 and a connecting section 32. One end of the main body section 31 is connected to the limiting groove 11, and the other end of the main body section 31 is connected to one end of the connecting section 32. The connecting section 32 is connected to the limiting hole 21. The diameter of the main body section 31 is larger than the diameter of the connecting section 32. The water outlet channel 5 passes through the main body section 31 and the connecting section 32.

[0037] In the above structure, by making the diameter of the main body section 31 larger than that of the connecting section 32, the main body section 31 has a stronger supporting capacity and can better withstand the impact of water flow and other external forces, maintaining the stability and integrity of the filter element. The diameter of the connecting section 32 is smaller than that of the main body section 31, making it easier for the connecting section 32 to achieve an interference fit with the limiting hole 21, making the connection between the filter element body 3 and the end cap 2 tighter, avoiding loosening or displacement of the filter element body 3 during use, and improving the assembly quality and stability of the filter element assembly.

[0038] In one embodiment, the end cap 2 is provided with a third extension section 24 extending toward one end of the main body section 31. A limiting hole 21 is formed inside the third extension section 24. The connecting section 32 is located inside the limiting hole 21, and the outer surface of the connecting section 32 is interference-fitted with the inner wall of the limiting hole 21.

[0039] By adding a third extension section 24, the assembly personnel can quickly insert the connecting section 32 of the filter element body 3 into the limiting hole 21 when installing the end cap 2, without the need for a complicated alignment or adjustment process, which simplifies the assembly steps and improves the assembly efficiency.

[0040] In one embodiment, the end face where the main body segment 31 connects to the connecting segment 32 forms an abutment surface 33, and the end of the third extension segment 24 abuts against the abutment surface 33.

[0041] In the above structure, the end of the third extension section 24 abuts against the contact surface 33, forming a tight contact fit. This helps improve the sealing performance between the filter element body 3 and the end cap 2, effectively preventing water leakage at the connection between the third extension section 24 and the main body section 31. This ensures that all fluids to be filtered pass through the filter element body 3, improving filtration efficiency and water quality safety. Due to the tight fit between the third extension section 24 and the contact surface 33, the reliance on additional seals (such as sealing rings) can be reduced to some extent. This simplifies the filter element assembly, lowers production costs, and reduces the risk of leakage due to aging or damage to seals.

[0042] In one embodiment, the main body segment 31 and the connecting segment 32 are an integral structure.

[0043] In the above structure, the main body section 31 and the connecting section 32 are integrated, improving the connection stability between them. This allows the filter element body 3 to provide higher structural strength and durability when subjected to water flow impact, reducing the risk of filter element assembly breakage or damage during use. Furthermore, since the main body section 31 and the connecting section 32 are integrated, no additional assembly steps, such as bonding or mechanical connections, are required, simplifying the filter element assembly manufacturing process, reducing complexity and error rates, improving production efficiency, and lowering production and assembly costs.

[0044] In one embodiment, the filter element body 3 is made of polypropylene cotton.

[0045] In the above structure, polypropylene cotton, also known as PP cotton, has a deep filtration structure with uniform pore size and a loose outer layer and a dense inner layer. It can effectively remove suspended solids, particles, rust, and other impurities from fluids, providing a stable filtration effect. Furthermore, PP cotton filter elements have high filtration efficiency, quickly and effectively filtering out impurities from fluids. Secondly, PP cotton filter elements have a large filtration flow rate and a small pressure differential, ensuring a highly efficient and smooth filtration process. Finally, PP cotton filter elements have a large dirt-holding capacity, capable of accommodating more impurities, reducing the frequency of filter element replacement, lowering maintenance costs, and extending the service life of the filter element assembly.

[0046] In one embodiment, the filter bottle 1 and the end cap 2 are connected by spin welding.

[0047] In the above structure, spin welding is a thermofusion connection method. By heating, the connection between filter bottle 1 and end cap 2 melts and fuses together to form a continuous whole, providing very high connection strength. This allows the filter element assembly to withstand greater mechanical stress and pressure, ensuring the stability and reliability of the filter element assembly during use. Simultaneously, it avoids leakage problems caused by loose connections between filter bottle 1 and end cap 2, improving the sealing performance of the filter element assembly. Furthermore, the welding operation can be completed quickly using specialized welding equipment, greatly improving production efficiency, reducing labor costs, and minimizing errors and inconsistencies caused by human operation.

[0048] It should be noted that, due to the reduction in the number of components in the filter element assembly, the mold manufacturing cost of the filter element assembly, the production material cost of the filter element assembly, and the assembly cost of the filter element assembly can be reduced.

[0049] The technical solution of this application reduces additional fasteners or complex connection methods by interference fitting the two ends of the filter element body 3 with the limiting groove 11 on the inner wall of the filter bottle 1 and the limiting hole 21 inside the end cap 2, thereby simplifying the filter element assembly and the assembly steps. A water inlet channel 4 is naturally formed between the filter element body 3 and the inner wall of the filter bottle 1, and the water inlet end 22 communicates with the water inlet channel 4. An outlet channel 5 is formed inside the filter element body 3, and the water outlet channel 5 communicates with the water outlet end 23. Specifically, the fluid to be filtered enters the cavity from the water inlet end 22, and after passing through… After the filter fluid flows through the inlet channel 4, it is filtered by the filter element body 3 to form the filter fluid. The filter fluid flows from the outlet channel 5 to the outlet end 23, and finally the filter fluid is output from the outlet end 23 to the outside of the filter element assembly. The filter element assembly provides a clear positioning for the filter element body 3 by using the limiting groove 11 on the inner wall of the filter bottle 1 and the limiting hole 21 inside the end cap 2. This ensures that the filter element can be quickly and accurately placed in place during assembly, avoiding assembly difficulties caused by inaccurate positioning. It greatly improves assembly efficiency and has the advantages of simple structure, compactness and easy assembly.

[0050] This application also proposes a water purification device, which includes a filter element assembly. The specific structure of the filter element assembly is as described in the above embodiments. Since this water purification device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0051] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A filter element assembly, characterized in that, include: A filter bottle, wherein the filter bottle has a cavity, one end of the cavity has an opening, and the inner wall of the end of the cavity away from the opening has a limiting groove; An end cap is provided, which is connected to one end of the filter bottle that has an opening. The end cap has a limiting hole inside. The end cap also has a water inlet and a water outlet, and the water outlet communicates with the limiting hole. The filter element body is disposed in the cavity. One end of the filter element body is interference-fitted with the limiting groove, and the other end of the filter element body is interference-fitted with the limiting hole. A water inlet channel is formed between the filter element and the inner wall of the cavity, and the water inlet channel is connected to the water inlet end. A water outlet channel is formed inside the filter element body, and the water outlet channel is connected to the water outlet end.

2. The filter element assembly as described in claim 1, characterized in that, The inner wall of the cavity is provided with a first extension section extending toward one end of the filter element. The first extension section surrounds the limiting groove and is interference-fitted with one end of the outer surface of the filter element body.

3. The filter element assembly as described in claim 2, characterized in that, The inner wall of the cavity is provided with a second extension section extending toward the water outlet channel. The second extension section is at least partially located inside the water outlet channel, and at least part of the outer surface of the second extension section is interference-fitted with the inner wall of the water outlet channel.

4. The filter element assembly as described in claim 3, characterized in that, The second extension section has a perforated structure in the middle.

5. The filter element assembly as described in any one of claims 1 to 4, characterized in that, The filter element body includes a main body section and a connecting section. One end of the main body section is connected to the limiting groove, and the other end of the main body section is connected to one end of the connecting section. The connecting section is connected to the limiting hole. The diameter of the main body section is larger than the diameter of the connecting section. The water outlet channel passes through the main body section and the connecting section.

6. The filter element assembly as described in claim 5, characterized in that, The end cap has a third extension section extending toward one end of the main body section. The limiting hole is formed inside the third extension section. The connecting section is located inside the limiting hole, and the outer surface of the connecting section is interference-fitted with the inner wall of the limiting hole.

7. The filter element assembly as described in claim 6, characterized in that, The end face where the main body segment connects to the connecting segment forms an abutment surface, and the end of the third extension segment abuts against the abutment surface.

8. The filter element assembly as described in claim 5, characterized in that, The main body segment and the connecting segment are an integral structure.

9. The filter element assembly as described in any one of claims 1 to 4, characterized in that, The filter element body is made of polypropylene cotton; and / or... The filter bottle and the end cap are connected by spin welding.

10. A water purification device, characterized in that, Includes the filter element assembly as described in any one of claims 1 to 9.

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