Filter element, filter element mounting structure and water purifier

Abstract

This utility model belongs to the technical field of water purification equipment, and provides a filter element, a filter element installation structure, and a water purifier. The filter element includes: a filter element cylinder; a filter element end cap, which is disposed at one end of the filter element body. The outer side wall of the filter element end cap is provided with a first snap-fit ​​arc buckle and a second snap-fit ​​arc buckle. The first snap-fit ​​arc buckle and the second snap-fit ​​arc buckle do not contact each other and have different lengths. This utility model ensures the uniqueness of the filter element installation direction, avoids improper filter element installation caused by reverse installation, and solves the problems of water leakage and customer complaints that may be caused by reverse installation of the filter element.

Description

Technical Field

[0001] This utility model relates to the field of water purification equipment technology, and in particular to a filter element, a filter element installation structure, and a water purifier. Background Technology

[0002] A water purifier, also known as a water filter or water purifier, is a water treatment device that performs deep filtration and purification of water according to the requirements for water use. With the development of the water purification industry and people's pursuit of quality of life, users have higher and higher requirements for the user experience of water purifier products, especially the operation of replacing filter cartridges.

[0003] In related technologies, most water purifier filter cartridges on the market currently use a snap-fit ​​quick-replacement method. However, the snap-fit ​​structure is designed with identical dimensions and structure on both sides, which can lead to users installing the filter cartridges backwards. This can easily result in improper installation, causing leaks and customer complaints. Utility Model Content

[0004] This utility model provides a filter element, a filter element installation structure, and a water purifier to solve the technical problems of water leakage and customer complaints caused by reverse installation of filter elements in existing water purifiers.

[0005] This utility model provides a filter element, the filter element comprising: Filter cartridge body; A filter element end cap is disposed at one end of the filter element cylinder. The outer side wall of the filter element end cap is provided with a first snap-fit ​​arc buckle and a second snap-fit ​​arc buckle. The first snap-fit ​​arc buckle and the second snap-fit ​​arc buckle do not contact each other and have different lengths.

[0006] In one embodiment of the present invention, the first snap-fit ​​arc buckle and the second snap-fit ​​arc buckle both extend between the first horizontal plane and the second horizontal plane. The first horizontal plane and the second horizontal plane are perpendicular to the axis of the filter element cylinder. The projected arc length of the first snap-fit ​​arc buckle on the first horizontal plane is L1, and the projected arc length of the second snap-fit ​​arc buckle on the first horizontal plane is L2, wherein L1 > L2.

[0007] In one embodiment of the present invention, the first snap-fit ​​arc buckle and the second snap-fit ​​arc buckle are each provided with a first guide surface on the side away from the filter element cylinder. The first guide surface is set at an angle to the first horizontal plane, and the first guide surface is used to provide guidance and fit during installation.

[0008] In one embodiment of the present invention, both the first snap-fit ​​arc buckle and the second snap-fit ​​arc buckle are provided with a second guide surface connected to the first guide surface on the side opposite to the filter element cylinder. The second guide surface is set at an angle to the first guide surface and is used to provide guidance and fit during installation.

[0009] In one embodiment of the present invention, the first snap-fit ​​arc buckle and the second snap-fit ​​arc buckle are both provided with a first mounting surface on the side near the filter element cylinder. The first mounting surface is at least partially parallel to the first horizontal plane, and a stop rib is also provided on the first mounting surface.

[0010] In one embodiment of the present invention, the first guide surface extends between the second horizontal plane and the third horizontal plane, the second guide surface extends between the first horizontal plane and the third horizontal plane, and the third horizontal plane is located between the first horizontal plane and the second horizontal plane and is parallel to the first horizontal plane.

[0011] This utility model also provides a filter element mounting structure, including: A filter element mounting base is provided with a first guide rail and a second guide rail, and a first positioning groove and a second positioning groove are formed between the first guide rail and the second guide rail. And the filter element as described above, wherein the first snap-fit ​​arc buckle cooperates with the first guide slide rail, and the second snap-fit ​​arc buckle cooperates with the second guide slide rail.

[0012] In one embodiment of the present invention, the projected arc length of the first positioning groove on the first horizontal plane is L3, and the projected arc length of the second positioning groove on the first horizontal plane is L4, wherein L3 = L1 + A1, A1 is the first fitting clearance, L4 = L2 + A2, A2 is the second fitting clearance, and L1 > L4.

[0013] In one embodiment of the present invention, both the first positioning groove and the second positioning groove are provided with guide bosses, and the guide bosses cooperate with the second guide surface for guidance.

[0014] This utility model also provides a water purifier, including the filter cartridge installation structure described above.

[0015] The beneficial effects of this utility model are as follows: The filter element proposed in this utility model has a first snap-fit ​​arc buckle and a second snap-fit ​​arc buckle of different lengths on the outer wall of the filter element end cap. When installing the filter element, because the lengths of the first snap-fit ​​arc buckle and the second snap-fit ​​arc buckle are different, it cannot be installed backwards, which ensures the uniqueness of the filter element installation direction, avoids improper filter element installation operation caused by reverse installation, and solves the problems of water leakage and customer complaints that may be caused by reverse installation of the filter element. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0017] In the attached diagram: Figure 1 This is a schematic diagram of the filter element and filter element mounting structure provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a filter element end cap provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the first snap-fit ​​arc buckle on the filter element end cap according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the second snap-fit ​​arc buckle on the filter element end cap according to an embodiment of the present invention; Figure 5 This is a first-view structural schematic diagram of a filter element mounting base provided in an embodiment of the present invention; Figure 6 This is a second-view structural schematic diagram of a filter element mounting base provided in an embodiment of the present invention; Figure 7 A first-view assembly diagram of the filter element and filter element mounting base provided in an embodiment of the present utility model; Figure 8 A second-view assembly diagram of the filter element and filter element mounting base provided in an embodiment of the present invention; Figure 9 A third-view assembly diagram of the filter element and filter element mounting base provided in an embodiment of the present utility model; Figure 10 A fourth-view assembly diagram of the filter element and filter element mounting base provided in an embodiment of the present utility model; Figure 11 A cross-sectional view of the filter element and filter element mounting base after assembly, according to an embodiment of the present invention.

[0018] The attached figures are labeled as follows: 1-Filter cartridge body; 2-Filter cartridge end cap; 3-Filter cartridge mounting base; 4-Integrated water circuit board; 5-First snap-fit ​​arc buckle; 6-Second snap-fit ​​arc buckle; 7-First guide surface; 8-Second guide surface; 9-First mounting surface; 10-Stop rib; 11-Guide start and stop surface; 12-First positioning groove; 13-Second positioning groove; 14-First guide slide rail; 15-Second guide slide rail; 16-Guide boss; 17-Angled guide surface; 18-Anti-reverse groove; 19-Second mounting surface; 20-Stop surface. Detailed Implementation

[0019] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0020] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0021] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0022] Please see Figures 1 to 11 This utility model provides an exemplary filter element, comprising: Filter cartridge body 1; The filter element end cap 2 is set at one end of the filter element cylinder 1. The outer side wall of the filter element end cap 2 is provided with a first snap-fit ​​arc buckle 5 and a second snap-fit ​​arc buckle 6. The first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 do not contact each other and have different lengths.

[0023] In the filter element provided by this utility model, a first snap-fit ​​arc buckle 5 and a second snap-fit ​​arc buckle 6 of different lengths are provided on the outer side wall of the filter element end cap 2. When the filter element is installed, it cannot be reversed because the lengths of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 are different, thus ensuring the uniqueness of the filter element installation direction, avoiding improper filter element installation operation caused by reverse installation, and solving the problems of water leakage and customer complaints that may be caused by reverse installation of the filter element.

[0024] In this embodiment, both the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 extend between the first horizontal plane and the second horizontal plane. The first horizontal plane and the second horizontal plane are perpendicular to the axis of the filter element cylinder 1. The projected arc length of the first snap-fit ​​arc buckle 5 on the first horizontal plane is L1, and the projected arc length of the second snap-fit ​​arc buckle 6 on the first horizontal plane is L2, where L1 > L2. Specifically, both the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 have a first end and a second end. The first end is flush with the first horizontal plane, and the second end is flush with the second horizontal plane. The projected arc lengths of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 on the first horizontal plane correspond to the lengths of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6. The projected arc lengths of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 are different, that is, the lengths of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 on both sides of the filter element end cap 2 are different. The filter element cannot be installed after being rotated 180°, so that the filter element cannot be installed backwards, maintaining the uniqueness of the forward installation.

[0025] In some embodiments, the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 are each provided with a first guide surface 7 on the side away from the filter element cylinder 1. The first guide surface 7 is set at an angle to the first horizontal plane. The first guide surface 7 is used to provide guidance and fit during installation. Specifically, the first guide surface 7 is an inclined surface. When installing the filter element, the first guide surface 7 provides guidance for installation, which facilitates the installation of the filter element.

[0026] Furthermore, both the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 are provided with a second guide surface 8 connected to the first guide surface 7 on the side away from the filter element cylinder 1. The second guide surface 8 is set at an angle to the first guide surface 7. The second guide surface 8 can be partially parallel to the first horizontal plane. The second guide surface 8 is used to provide guidance and fit during installation. Specifically, the second guide surface 8 has an inclined surface. The inclination of the inclined surface of the second guide surface 8 is less than the inclination of the first guide surface 7. The second guide surface 8 is connected to the first end through an inclined transition surface.

[0027] It is worth noting that the projected arc length of the second guide surface 8 of the first snap-fit ​​arc buckle 5 on the first horizontal plane is L5, and the projected arc length of the second guide surface 8 of the second snap-fit ​​arc buckle 6 on the first horizontal plane is L6, where L5 > L6. By limiting the length of the second guide surface 8 of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6, the design of different lengths of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 is satisfied.

[0028] In the above embodiment, the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 are both provided with a first mounting surface 9 on the side near the filter element cylinder 1. The first mounting surface 9 is at least partially parallel to the first horizontal plane. The first mounting surface 9 is provided with a stop rib 10. Specifically, a guide start and stop surface 11 is provided between the first mounting surface 9 and the first end. The first mounting surface 9 has a horizontal part parallel to the first horizontal plane and an arc-shaped and inclined part that is not parallel to the first horizontal plane. The guide start and stop surface 11 is connected to the first mounting surface 9 and the first end at the same time.

[0029] In this embodiment, the first guide surface 7 extends between the second horizontal plane and the third horizontal plane, the second guide surface 8 extends between the first horizontal plane and the third horizontal plane, and the third horizontal plane is located between the first horizontal plane and the second horizontal plane and parallel to the first horizontal plane, so that the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 form an irregular arc structure.

[0030] In another embodiment, the present invention also provides a filter element mounting structure, comprising: The filter element mounting base 3 is provided with a first guide slide rail 14 and a second guide slide rail 15, and a first positioning groove 12 and a second positioning groove 13 are formed between the first guide slide rail 14 and the second guide slide rail 15. And the filter element as described above, the first snap-fit ​​arc buckle 5 cooperates with the first guide slide rail 14, and the second snap-fit ​​arc buckle 6 cooperates with the second guide slide rail 15.

[0031] In some embodiments, the filter element mounting structure also includes an integrated water circuit board 4. The filter element mounting base 3 is detachably connected to or integrally connected to the integrated water circuit board 4. Specifically, when the filter element is installed in the filter element mounting base 3, the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 of the filter element are installed by the first positioning groove 12 and the second positioning groove 13 respectively. Since the lengths of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 are different, the first snap-fit ​​arc buckle 5 can only slide down from the first positioning groove 12 into the filter element mounting base 3, and the second snap-fit ​​arc buckle 6 can only slide down from the second positioning groove 13 into the filter element mounting base 3. Then, the first guide slide rail 14 and the second guide slide rail 15 respectively guide and match the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6, thereby realizing the installation of the filter element on the filter element mounting base 3 and avoiding water leakage caused by reverse installation of the filter element.

[0032] Furthermore, the projected arc length of the first positioning groove 12 on the first horizontal plane is L3, and the projected arc length of the second positioning groove 13 on the first horizontal plane is L4. Wherein, L3=L1+A1, A1 is the first fitting gap, and L4=L2+A2, A2 is the second fitting gap. Specifically, the first fitting gap is the installation gap reserved for the first snap-fit ​​arc buckle 5 when the first positioning groove 12 is installed, and the second fitting gap is the installation gap reserved for the second snap-fit ​​arc buckle 6 when the second positioning groove 13 is installed. L1>L4. When installing the filter element, the first snap-fit ​​arc buckle 5 cannot fall into the second positioning groove 13 due to the size mismatch between the first snap-fit ​​arc buckle 5 and the second positioning groove 13, thereby avoiding the reverse installation operation of the filter element and further ensuring the uniqueness of the installation direction.

[0033] In some embodiments, a guide boss 16 is provided in both the first positioning groove 12 and the second positioning groove 13, and the guide boss 16 is respectively guided and engaged with the second guide surface 8 of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6.

[0034] In some embodiments, both the first guide rail 14 and the second guide rail 15 are provided with an inclined guide surface 17, a backstop groove 18, a second mounting surface 19, and a stop surface 20. The backstop groove 18 is disposed on the second mounting surface 19. The guide start and stop surfaces 11 of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 cooperate with the inclined guide surfaces 17 of the first guide rail 14 and the second guide rail 15 to guide the guide rails until the guide start and stop surfaces 11 of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 contact the stop surface 20 of the first guide rail 14 and the second guide rail 15, so as to connect the stop ribs 10 of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 with the first guide rail 14 and the second guide rail 15. The anti-reverse groove 18 of the slide rail 15 is matched. The first mounting surface 9 of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 is in contact with the second mounting surface 19 of the first guide slide rail 14 and the second guide slide rail 15. Specifically, after the filter element is installed on the filter element mounting base 3, the stop ribs 10 of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 respectively cooperate with the anti-reverse grooves 18 of the first guide slide rail 14 and the second guide slide rail 15 to prevent the filter element from being pulled out due to water pressure during operation and causing water leakage. The first mounting surface 9 and the second mounting surface 19 are in close contact to bear the axial pressure of the filter element. The stop rib 10 is stuck on the anti-reverse groove 18 to bear the radial rotation pressure of the filter element and prevent the filter element from retracting.

[0035] It is worth noting that the method of using this utility model is as follows: When installing the filter element, first move the filter element end cap 2 towards the filter element mounting base 3 and downwards, while simultaneously rotating the filter element clockwise. The first snap-fit ​​arc buckle 5 on the filter element end cap 2 will align and fall into the first positioning groove 12 of the filter element mounting base 3, and the second snap-fit ​​arc buckle 6 will align and fall into the second positioning groove 13. At this time, the first guide surfaces 7 of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 respectively contact the first guide slide rail 14 and the second guide slide rail 15 of the filter element mounting base 3, and the guide start and stop surfaces 11 contact the inclined guide surfaces. Continue pressing and rotating the filter element clockwise. The first guide surfaces 7 of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 cooperate with the guide surfaces of the first guide slide rail 14 and the second guide slide rail 15. Under the oblique push, the filter element can rotate smoothly until the first guide surface... When the filter element 7 disengages from the first guide rail 14 and the second guide rail 15, the second guide surface 8 contacts and engages with the guide boss 16 to ensure smooth rotation of the filter element. When the filter element rotates to the point where the guide start and stop surfaces 11 of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 contact the stop surfaces 20 of the first guide rail 14 and the second guide rail 15 respectively, the filter element is blocked and cannot rotate, indicating that the filter element is installed in place. When disassembling the filter element, it can be disassembled by rotating the filter element counterclockwise. During the process of the filter element being rotated out, the guide boss 16 first contacts the second guide surface 8 and pushes the filter element outward. After being pushed out for a certain distance, the first guide rail 14 and the second guide rail 15 of the filter element mounting base 3 contact the first guide surface 7 of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 respectively, and continue to push the filter element outward until the filter element is disassembled.

[0036] In another embodiment, the present invention also provides a water purifier, including the filter cartridge installation structure as described above.

[0037] In summary, in the filter cartridge installation structure and water purifier provided by this utility model, a first snap-fit ​​arc buckle 5 and a second snap-fit ​​arc buckle 6 of different lengths are provided on the outer side wall of the filter cartridge end cap 2. When the filter cartridge is installed, it cannot be reversed because the lengths of the first snap-fit ​​arc buckle 5 and the second snap-fit ​​arc buckle 6 are different, thus ensuring the uniqueness of the filter cartridge installation direction, avoiding improper filter cartridge installation due to reverse installation, and solving the problems of water leakage and customer complaints that may be caused by reverse installation of the filter cartridge.

[0038] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A filter element, characterized in that, include: Filter cartridge body; A filter element end cap is disposed at one end of the filter element cylinder. The outer side wall of the filter element end cap is provided with a first snap-fit ​​arc buckle and a second snap-fit ​​arc buckle. The first snap-fit ​​arc buckle and the second snap-fit ​​arc buckle do not contact each other and have different lengths.

2. The filter element according to claim 1, characterized in that, The first and second snap-fit ​​arc buckles both extend between the first and second horizontal planes, which are perpendicular to the axis of the filter element cylinder. The projected arc length of the first snap-fit ​​arc buckle on the first horizontal plane is L1, and the projected arc length of the second snap-fit ​​arc buckle on the first horizontal plane is L2, where L1 > L2.

3. The filter element according to claim 2, characterized in that, Both the first snap-fit ​​arc buckle and the second snap-fit ​​arc buckle are provided with a first guide surface on the side away from the filter element cylinder. The first guide surface is set at an angle to the first horizontal plane and is used to provide guidance and fit during installation.

4. The filter element according to claim 3, characterized in that, Both the first snap-fit ​​arc buckle and the second snap-fit ​​arc buckle have a second guide surface connected to the first guide surface on the side opposite to the filter element cylinder. The second guide surface is set at an angle to the first guide surface and is used to provide guidance and fit during installation.

5. The filter element according to claim 4, characterized in that, Both the first snap-fit ​​arc buckle and the second snap-fit ​​arc buckle have a first mounting surface on the side near the filter element cylinder. The first mounting surface is at least partially parallel to the first horizontal plane, and a stop rib is also provided on the first mounting surface.

6. The filter element according to claim 4, characterized in that, The first guide surface extends between the second horizontal plane and the third horizontal plane, the second guide surface extends between the first horizontal plane and the third horizontal plane, and the third horizontal plane is located between the first horizontal plane and the second horizontal plane and is parallel to the first horizontal plane.

7. A filter element mounting structure, characterized in that, include: A filter element mounting base is provided with a first guide slide rail and a second guide slide rail, and a first positioning groove and a second positioning groove are formed between the first guide slide rail and the second guide slide rail. And the filter element as described in any one of claims 1-6, wherein the first snap-fit ​​arc buckle cooperates with the first guide slide rail, and the second snap-fit ​​arc buckle cooperates with the second guide slide rail.

8. The filter element mounting structure according to claim 7, characterized in that, The first positioning groove has a projected arc length of L3 on the first horizontal plane, and the second positioning groove has a projected arc length of L4 on the first horizontal plane. Wherein, L3 = L1 + A1, A1 is the first fitting clearance, L4 = L2 + A2, A2 is the second fitting clearance, and L1 > L4.

9. The filter element mounting structure according to claim 7, characterized in that, Both the first positioning groove and the second positioning groove are provided with guide bosses, and the guide bosses cooperate with the second guide surface for guidance.

10. A water purifier, characterized in that, Includes the filter element mounting structure as described in any one of claims 7-9.

Images