A composite filter cartridge assembly

Abstract

The utility model discloses a kind of composite filter element assemblies, comprising: shell and bottom cover, the first filter element cavity is formed in the shell, the bottom of the shell has the opening coaxial with the first cavity, the bottom cover is detachably connected at the opening by locking assembly, and it is sealed with the opening cooperation, the locking assembly includes knob and multiple lock latches, the bottom of the bottom cover is coaxially provided with mounting groove, the knob is coaxially rotated and arranged in the mounting groove, multiple lock latches are distributed along the circumferential direction of rotation, and each lock latch can be slidably mounted on the bottom cover along the radial direction of the bottom cover.The utility model can realize the expansion and contraction of lock latch by rotating knob, so that the disassembly and assembly of bottom cover and shell are conveniently realized, when disassembling, without rotating filter element in the first filter element cavity, the replacement process of filter element is simplified, and the operation convenience is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of purification equipment, and in particular to a composite filter element assembly. Background Technology

[0002] As people's requirements for drinking water hygiene increase, water purifiers are being used more and more widely in various situations. Traditional water purifiers often use a non-removable installation method for their composite filter cartridges, which greatly limits the flexibility of filter maintenance and replacement. Even some removable filter cartridges use a snap-on structure, but this structure is still complicated to replace, requiring professional operation, which is not conducive to non-professional users replacing filter cartridges themselves, increasing usage costs and inconvenience.

[0003] In the existing technology, the replacement of composite filter elements often requires complicated operating procedures, such as rotating the filter element to separate it from the top seat and then pulling it out. This structure is complicated to disassemble and assemble, and it is difficult for non-professionals to operate, which brings great inconvenience to the replacement of filter elements. Utility Model Content

[0004] In view of the above-mentioned problems of existing composite filter elements, the present invention aims to provide a composite filter element assembly.

[0005] The specific technical solution is as follows:

[0006] A composite filter element assembly includes: a housing and a bottom cover. A first filter element cavity is formed within the housing. The bottom of the housing has an opening coaxial with the first filter element cavity. The bottom cover is detachably connected to the opening via a locking assembly and engages with the opening to seal it. The locking assembly includes:

[0007] The knob is coaxially mounted in the mounting groove at the bottom of the bottom cover.

[0008] Multiple latches are distributed circumferentially along the knob. Each latch can be slidably mounted on the bottom cover radially. The inner wall of the opening is provided with multiple locking slots corresponding to the multiple latches. By rotating the knob, the latches can be slid radially into or out of the multiple locking slots.

[0009] As a further improvement and optimization of this solution, an elastic element is provided between each of the locking tongues and the bottom cover;

[0010] Multiple arc-shaped guide blocks are eccentrically arranged on the outer circumferential surface of the knob. The multiple arc-shaped guide blocks are distributed along the circumference of the knob. One end of the multiple latches elastically abuts against the outer arc surface of the multiple arc-shaped guide blocks. By rotating the knob, one end of the multiple latches slides on the outer arc surface of the multiple arc-shaped guide blocks, thereby causing the other end of the multiple latches to slide into or out of the multiple lock slots.

[0011] As a further improvement and optimization of this solution, a limiting surface is formed between the connection points of two adjacent arc-shaped guide blocks. When one end of each of the several locking tongues is respectively limited and engaged with the several limiting surfaces, the other ends of the multiple locking tongues are respectively disengaged from the multiple lock openings.

[0012] As a further improvement and optimization of this solution, a plurality of sliding grooves communicating with the mounting groove are radially provided on the outer circumferential surface of the bottom cover, and the plurality of locking tongues are respectively slidably installed in the plurality of sliding grooves.

[0013] As a further improvement and optimization of this solution, each of the locking tongues includes: a locking part, an abutting part, and a connecting part, wherein the connecting part is connected between the locking part and the abutting part;

[0014] The sliding groove includes: a first groove and a second groove. The first groove is disposed on the inner wall of the mounting groove, and the second groove is disposed on the outer circumferential surface of the bottom cover. The first groove and the second groove are connected through a sliding hole. The abutting part is slidably engaged with the first groove, the locking part is slidably engaged with the second groove, and the connecting part is slidably engaged with the sliding hole.

[0015] The elastic element is a spring, which is sleeved in the first groove and located between the contact portion and the bottom of the first groove.

[0016] As a further improvement and optimization of this solution, the inner wall of the mounting groove is coaxially provided with a limiting groove, the limiting groove is respectively connected to a plurality of the first groove bodies, and at least a portion of the plurality of arc-shaped guide blocks are disposed in the limiting groove and form a circumferential sliding fit with the limiting groove.

[0017] As a further improvement and optimization of this solution, the top of the bottom cover extends upward with a positioning part, which is sealed and cooperates with the bottom inner wall of the first filter element cavity.

[0018] The top of the positioning part has a positioning groove;

[0019] The composite filter assembly further includes an inner filter element, which is disposed within the first filter element cavity and is positioned in conjunction with the positioning groove.

[0020] As a further improvement and optimization of this solution, the outer shell also has a second filter element cavity, which is coaxially arranged around the outside of the first filter element cavity, and an outer filter element is provided inside the second filter element cavity.

[0021] As a further improvement and optimization of this solution, the outer side of the positioning part has a sealing groove for installing a sealing ring.

[0022] As a further improvement and optimization of this solution, a groove is coaxially provided at the bottom of the knob, and a handle is provided radially inside the groove.

[0023] The positive effects of the above technical solution compared with the existing technology are:

[0024] In this invention, the locking tongue can be extended or retracted by rotating the knob, thus facilitating the disassembly and assembly of the bottom cover and the outer shell. During disassembly and assembly, there is no need to rotate the filter element inside the first filter element cavity, which simplifies the filter element replacement process and improves the ease of operation.

[0025] The elastic element in this invention ensures that the locking tongue of the elastic element always abuts against the arc-shaped guide block, and the arc-shaped guide block allows the rotation of the knob to be smoothly converted into the radial sliding of the locking tongue, simplifying the operation process.

[0026] The limiting surface in this invention ensures that the locking tongue can completely disengage from the locking jaws when the knob is in a specific position, thereby facilitating the removal of the bottom cover and improving the efficiency of filter replacement. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a composite filter element assembly according to the present invention;

[0028] Figure 2 This is a cross-sectional view of a composite filter element assembly according to the present invention;

[0029] Figure 3 This is a bottom view of the outer shell of a composite filter element assembly according to the present invention;

[0030] Figure 4 This is a schematic diagram of the bottom cover of a composite filter element assembly according to the present invention;

[0031] Figure 5 This is a cross-sectional view of the bottom cover of a composite filter element assembly according to the present invention;

[0032] Figure 6 This is a schematic diagram of the knob structure of a composite filter element assembly according to the present invention;

[0033] Figure 7 This is a schematic diagram of the sliding groove structure of a composite filter element assembly according to the present invention;

[0034] In the attached diagram: 1. Outer shell; 2. Inner filter element; 3. Outer filter element; 4. Bottom cover; 5. Knob; 6. Locking tongue; 7. Elastic element; 11. First filter element cavity; 12. Second filter element cavity; 13. Opening; 14. Locking port; 41. Mounting groove; 42. Sliding groove; 43. Positioning groove; 51. Arc-shaped guide block; 52. Groove; 53. Handle; 61. Locking part; 62. Abutting part; 63. Connecting part; 421. First groove; 411. Limiting groove; 422. Sliding hole; 423. Second groove; 511. Limiting surface. Detailed Implementation

[0035] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Figure 1 This is a schematic diagram of the structure of a composite filter element assembly according to the present invention; Figure 2 This is a cross-sectional view of a composite filter element assembly according to the present invention; Figure 3 This is a bottom view of the outer shell of a composite filter element assembly according to the present invention; Figure 4 This is a schematic diagram of the bottom cover of a composite filter element assembly according to the present invention; Figure 5 This is a cross-sectional view of the bottom cover of a composite filter element assembly according to the present invention;Figure 6 This is a schematic diagram of the knob structure of a composite filter element assembly according to the present invention; Figure 7 This is a schematic diagram of the sliding groove structure of a composite filter element assembly according to the present invention, as shown below. Figures 1-6 The diagram illustrates a preferred embodiment of a composite filter assembly, comprising: a housing 1 and a bottom cover 4. A first filter cavity 11 is formed within the housing 1. The bottom of the housing 1 has an opening 13 coaxial with the first cavity. The bottom cover 4 is detachably connected to the opening 13 via a locking assembly and is engaged with the opening 13 for sealing. The locking assembly includes a knob 5 and multiple locking tongues 6. A mounting groove 41 is coaxially provided on the bottom of the bottom cover 4. The knob 5 is coaxially rotatably disposed within the mounting groove 41. The multiple locking tongues 6 are distributed circumferentially along the knob. Each locking tongue 6 can be slidably mounted on the bottom cover 4 radially. The inner wall of the opening 13 is provided with multiple locking slots 14 corresponding to the multiple locking tongues 6. By rotating the knob 5, the multiple locking tongues 6 can be radially slid into or out of the multiple locking slots 14.

[0039] In this application, the locking tongue 6 can be extended or retracted by rotating the knob 5, thereby facilitating the disassembly and assembly of the bottom cover 4 and the outer shell 1. During disassembly and assembly, there is no need to rotate the filter element 2 inside the first filter element cavity 11, which simplifies the filter element replacement process and improves the ease of operation.

[0040] Furthermore, in a preferred embodiment, an elastic element 7 is provided between each latch 6 and the bottom cover 4; multiple arc-shaped guide blocks 51 are eccentrically arranged on the outer circumferential surface of the knob 5, and the multiple arc-shaped guide blocks 51 are distributed along the circumference of the knob 5. One end of each latch 6 elastically abuts against the outer arc surface of the multiple arc-shaped guide blocks 51. By rotating the knob 5, one end of each latch 6 slides on the outer arc surface of the multiple arc-shaped guide blocks 51, thereby causing the other end of each latch 6 to slide into or out of the multiple lock slots 14. The elastic element 7 ensures that the latch 6 of the elastic element 7 always abuts against the arc-shaped guide block 51, and the arc-shaped guide block 51 allows the rotation of the knob 5 to be smoothly converted into the radial sliding of the latch 6, simplifying the operation process.

[0041] Furthermore, in a preferred embodiment, a limiting surface 511 is formed between the connection points of two adjacent arc-shaped guide blocks 51. When one end of a plurality of locking tongues 6 is respectively limited and engaged with a plurality of limiting surfaces 511, the other ends of the plurality of locking tongues 6 are respectively disengaged from a plurality of locking slots 14. The setting of the limiting surfaces ensures that the locking tongues 6 can be completely disengaged from the locking slots 14 when the knob 5 is in a specific position, thereby facilitating the disassembly of the bottom cover 4 and improving the efficiency of filter replacement.

[0042] Furthermore, as a preferred embodiment, the outer circumferential surface of the bottom cover 4 is radially provided with multiple sliding grooves 42 communicating with the mounting groove 41, and multiple locking tongues 6 are respectively slidably installed in the multiple sliding grooves 42. The design of the sliding grooves 42 provides a stable sliding track for the locking tongues 6, ensuring the stability and accuracy of the locking tongues 6 during radial sliding.

[0043] Furthermore, in a preferred embodiment, each locking tongue 6 includes: a locking part 61, an abutting part 62, and a connecting part 63, with the connecting part 63 connecting between the locking part 61 and the abutting part 62; the sliding groove 42 includes: a first groove 421 and a second groove 423, the first groove 421 being disposed on the inner wall of the mounting groove 41, the second groove 423 being disposed on the outer circumferential surface of the bottom cover 4, and the first groove 421 and the second groove 423 communicating through a sliding hole 422, the abutting part 62 slidingly engaging with the first groove 421, the locking part 61 slidingly engaging with the second groove 423, and the connecting part 63 slidingly engaging with the sliding hole 422; wherein, the elastic element 7 is a spring, the spring being sleeved inside the first groove 421 and disposed between the abutting part 62 and the bottom of the first groove 421. The segmented design of the locking tongue 6 and the detailed structure of the slide groove 42 enable the locking tongue 6 to maintain stable structural strength during sliding, while the spring provides the necessary elastic force to ensure the automatic reset function of the locking tongue 6.

[0044] Furthermore, in a preferred embodiment, a limiting groove 411 is coaxially provided on the inner wall of the mounting groove 41. The limiting groove 411 communicates with several first grooves 421, and at least a portion of the multiple arc-shaped guide blocks 51 are disposed within the limiting groove 411, forming a circumferential sliding fit with the limiting groove 411. The setting of the limiting groove 411 restricts the axial movement of the knob 5, while ensuring a stable fit between the arc-shaped guide blocks 51 and the locking tongue 6, thereby improving the reliability and durability of the entire locking assembly.

[0045] Furthermore, in a preferred embodiment, the top of the bottom cover 4 extends upward to form a positioning part, which seals and engages with the bottom inner wall of the first filter element cavity 11; the top of the positioning part has a positioning groove 43; the composite filter element assembly further includes an inner filter element 2, which is disposed within the first filter element cavity 11 and is positioned and engaged with the positioning groove 43. The positioning part and the positioning groove 43 ensure the accurate position of the inner filter element 2 within the first filter element cavity 11, thereby improving the filtration effect and stability of the filter element.

[0046] Furthermore, in a preferred embodiment, the outer casing 1 also includes a second filter element cavity 12, which is coaxially arranged around the outside of the first filter element cavity 11, and an outer filter element 3 is disposed within the second filter element cavity 12. The arrangement of the second filter element cavity 12 and the outer filter element 3 increases the filtration layers and filtration area of ​​the filter element, improves the overall filtration effect, and meets higher standards for drinking water.

[0047] In some embodiments, the first filter chamber 11 and the second filter chamber 12 are connected by a plurality of flow guide holes.

[0048] Furthermore, as a preferred embodiment, the outer side of the positioning part has a sealing groove for installing a sealing ring. The sealing groove and sealing ring effectively prevent water leakage from the gap between the positioning part and the inner wall of the first filter element cavity 11, thereby improving the sealing performance of the filter element assembly.

[0049] Furthermore, as a preferred embodiment, a groove 52 is coaxially provided at the bottom of the knob 5, and a handle 53 is radially provided within the groove 52. The groove 52 and the handle 53 make it easier for the user to rotate the knob 5, improving ease of operation and user experience.

[0050] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite filter element assembly, characterized in that, include: The housing and the bottom cover are provided. A first filter element cavity is formed within the housing. The bottom of the housing has an opening coaxial with the first filter element cavity. The bottom cover is detachably connected to the opening via a locking assembly and engages with the opening to seal it. The locking assembly includes: The knob is coaxially mounted in the mounting groove at the bottom of the bottom cover. Multiple latches are distributed circumferentially along the knob. Each latch can be slidably mounted on the bottom cover radially. The inner wall of the opening is provided with multiple locking slots corresponding to the multiple latches. By rotating the knob, the latches can be slid radially into or out of the multiple locking slots.

2. The composite filter assembly according to claim 1, characterized in that, An elastic element is provided between each of the locking tongues and the bottom cover; Multiple arc-shaped guide blocks are eccentrically arranged on the outer circumferential surface of the knob. The multiple arc-shaped guide blocks are distributed along the circumference of the knob. One end of the multiple latches elastically abuts against the outer arc surface of the multiple arc-shaped guide blocks. By rotating the knob, one end of the multiple latches slides on the outer arc surface of the multiple arc-shaped guide blocks, thereby causing the other end of the multiple latches to slide into or out of the multiple lock slots.

3. The composite filter assembly according to claim 2, characterized in that, A limiting surface is formed between the connection points of two adjacent arc-shaped guide blocks. When one end of each of the locking tongues is respectively limited and engaged with the limiting surface, the other end of each of the locking tongues disengages from the lock opening.

4. The composite filter assembly according to claim 2, characterized in that, The outer circumferential surface of the bottom cover is provided with a plurality of sliding grooves that communicate with the mounting groove, and the plurality of locking tongues are respectively slidably installed in the plurality of sliding grooves.

5. The composite filter assembly according to claim 4, characterized in that, Each of the aforementioned latches includes: a locking portion, an abutting portion, and a connecting portion, wherein the connecting portion is connected between the locking portion and the abutting portion; The sliding groove includes: a first groove and a second groove. The first groove is disposed on the inner wall of the mounting groove, and the second groove is disposed on the outer circumferential surface of the bottom cover. The first groove and the second groove are connected through a sliding hole. The abutting part is slidably engaged with the first groove, the locking part is slidably engaged with the second groove, and the connecting part is slidably engaged with the sliding hole. The elastic element is a spring, which is sleeved in the first groove and located between the contact portion and the bottom of the first groove.

6. The composite filter assembly according to claim 5, characterized in that, The inner wall of the mounting groove is coaxially provided with a limiting groove, which is connected to several of the first groove bodies respectively, and at least a portion of the multiple arc-shaped guide blocks are disposed in the limiting groove and form a circumferential sliding fit with the limiting groove.

7. The composite filter assembly according to claim 1, characterized in that, The top of the bottom cover extends upward to form a positioning part, which is sealed and engaged with the bottom inner wall of the first filter element cavity. The top of the positioning part has a positioning groove; The composite filter assembly further includes an inner filter element, which is disposed within the first filter element cavity and is positioned in conjunction with the positioning groove.

8. The composite filter assembly according to claim 7, characterized in that, The outer casing also has a second filter element cavity, which is coaxially arranged around the outside of the first filter element cavity, and an outer filter element is disposed inside the second filter element cavity.

9. The composite filter assembly according to claim 7, characterized in that, The outer side of the positioning part has a sealing groove for installing a sealing ring.

10. The composite filter assembly according to claim 1, characterized in that, The bottom of the knob is coaxially provided with a groove, and a handle is provided radially inside the groove.

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