Assembled composite filter element

Abstract

The utility model discloses an assembly type composite filter element, the composite filter element is formed by installing a plurality of functional filter elements end to end, each functional filter element comprises a shell, an upper cover and a separator, a water inlet pipe is arranged at the center of the upper cover, a water outlet pipe is arranged at the bottom of the shell, and the separator divides the space between the shell and the upper cover into a first filter material cavity and a second filter material cavity. A plurality of functional filter elements are arranged in series and are respectively provided with a first filter element and a second filter element, a water body is sequentially purified by the first filter element and the second filter element, and comprehensive filtration of impurities with different particle sizes and pollutants with different properties can be realized by matching with the logic of'first rough filtration and second fine filtration 'formed by connecting the plurality of functional filter elements in series; only the corresponding functional filter element needs to be replaced, so that the waste of a non-invalid filter material is avoided, and the use cost of a user is effectively reduced; meanwhile, a user can flexibly replace part of the filter elements or adjust the combination sequence according to requirements to adapt to different filtering scenes, and the use flexibility and economical efficiency are improved.

Description

Technical Field

[0001] This utility model relates to a water purifier, and more particularly to an assembled composite filter element. Background Technology

[0002] Traditional filter cartridges are usually single-structured and have only a single filtration function. For example, common household water purifier filter cartridges can only remove large particulate impurities, while others can only adsorb odors and some harmful substances. In actual use, because a single filter cartridge cannot simultaneously meet the filtration needs of impurities of different particle sizes and pollutants of different properties, the filtration effect is not ideal and cannot fully guarantee the quality of the output water or the purification effect. Therefore, filter cartridges with different effects have been added to the market.

[0003] To further improve filtration efficiency, some technologies employ composite filter cartridge structures. These cartridges combine multiple layers of filter materials with different functions to achieve multi-stage filtration from coarse to fine filtration, thus meeting complex filtration needs to some extent. However, existing composite filter cartridges have significant drawbacks: because their multiple layers of filter materials are tightly integrated inside the same cartridge housing, when a certain layer of filter material reaches saturation or fails, it is impossible to replace that layer individually; the entire composite filter cartridge must be replaced. This method of replacing the entire cartridge not only wastes unused filter material but also significantly increases the user's operating costs. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides an assembled composite filter element.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An assembled composite filter element is provided, which is composed of several functional filter elements installed end to end. Each functional filter element includes a shell, a top cover, and a separator. The top cover has an inlet pipe at its center, and the shell has an outlet pipe at its bottom. The separator has a partition inside, dividing it into an inlet area and an outlet area. The lower end of the outlet area is sealed and fixed to the bottom of the shell. A first filter material cavity communicating with the inlet pipe is formed between the inner wall of the inlet area and the outer wall of the inlet pipe. A second filter material cavity communicating with the first filter material cavity is formed between the outer wall of the separator and the inner wall of the shell. The sidewall of the outlet area has several connecting holes arranged in a ring for communicating the second filter material cavity with the outlet pipe. The first filter material cavity and the second filter material cavity are respectively equipped with a first filter element and a second filter element. The outlet pipe of one functional filter element is sealed and installed inside the inlet pipe of another functional filter element.

[0007] The outer side of the upper end of the outer shell is provided with a first external thread, and the upper cover is provided with a first internal thread corresponding to the first external thread. The first external thread and the first internal thread are spirally sealed together.

[0008] The upper end of the water inlet pipe is provided with a second internal thread, and the water outlet pipe is provided with a second external thread corresponding to the second internal thread. The second internal thread and the second external thread are spirally sealed together.

[0009] The bottom of the outer casing is provided with an annular groove, and the bottom of the outlet area of ​​the isolator is sealed and fixed in the annular groove by adhesive.

[0010] The lower end of the water inlet pipe is separated from the partition plate, forming a first connecting part that connects the water inlet pipe to the first filter material cavity.

[0011] The upper end of the inlet area of ​​the isolation member is separated from the upper cover, forming a second connecting portion that connects the first filter material cavity and the second filter material cavity.

[0012] The beneficial effects of this utility model are as follows: An assembled composite filter element is composed of several functional filter elements installed end-to-end. Each functional filter element includes a shell, a top cover, and a separator. An inlet pipe is located at the center of the top cover, and an outlet pipe is located at the bottom of the shell. The separator divides the shell and top cover into a first filter media chamber and a second filter media chamber, each housing a first and a second filter element. Water is purified sequentially through the first and second filter elements. Combined with the "coarse filtration followed by fine filtration" logic formed by multiple functional filter elements connected in series, it can achieve comprehensive filtration of impurities of different particle sizes and pollutants of different properties. When the filter media in a certain functional filter element reaches saturation or becomes ineffective, only the corresponding functional filter element needs to be replaced, avoiding waste of unused filter media and effectively reducing user operating costs. Simultaneously, users can flexibly replace some filter elements or adjust the combination order according to their needs to adapt to different filtration scenarios, improving the flexibility and economy of use. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a structural diagram of the present invention;

[0015] Figure 2 This is an exploded view of the functional filter element;

[0016] Figure 3 This is a cross-sectional view of a functional filter element;

[0017] Figure 4 This is a schematic diagram of the water flow direction;

[0018] Figure 5 This is a structural diagram of the outer shell. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0020] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0021] The following describes some embodiments of the present invention with reference to the accompanying drawings.

[0022] Reference Figure 1-5 An assembled composite filter element is composed of several functional filter elements 1 installed end to end. Each functional filter element 1 includes a shell 2, a top cover 3, and a separator 4. A water inlet pipe 5 is located at the center of the top cover 3, and a water outlet pipe 6 is located at the bottom of the shell 2. A partition 7 is provided inside the separator 4, dividing it into an inlet area and an outlet area. The lower end of the outlet area is sealed and fixed to the bottom of the shell 2. A first filter material cavity 8, communicating with the water inlet pipe 5, is formed between the inner wall of the inlet area and the outer wall of the water inlet pipe 5. The outer wall of the separator 4 is connected to the outer wall of the water inlet pipe 5. A second filter media cavity 9, communicating with the first filter media cavity 8, is formed between the inner walls of the shell 2. The sidewalls of the outlet area are arranged in a ring with several connecting holes 10 for connecting the second filter media cavity 9 to the water outlet pipe 6. The first filter media cavity 8 and the second filter media cavity 9 are respectively equipped with a first filter element 11 and a second filter element 12. The water outlet pipe 6 of one functional filter element 1 is sealed and installed inside the water inlet pipe 5 of another functional filter element 1. Water is purified sequentially through the first filter element 11 and the second filter element 12. Combined with the "coarse filtration first, fine filtration later" logic formed by multiple functional filter elements 1 connected in series, comprehensive filtration of impurities of different particle sizes and pollutants of different properties can be achieved. When the filter media in a certain functional filter element reaches saturation or fails, only the corresponding functional filter element needs to be replaced (or only the internal filter media needs to be replaced), avoiding waste of unused filter media and effectively reducing user operating costs. At the same time, users can flexibly replace some filter elements or adjust the combination order according to their needs to adapt to different filtration scenarios, improving the flexibility and economy of use.

[0023] The outer side of the upper end of the outer shell 2 is provided with a first external thread, and the upper cover 3 is provided with a first internal thread corresponding to the first external thread. The first external thread and the first internal thread are spirally sealed together.

[0024] The upper end of the water inlet pipe 5 is provided with a second internal thread, and the water outlet pipe 6 is provided with a second external thread corresponding to the second internal thread. The second internal thread and the second external thread are spirally sealed together.

[0025] This threaded connection method is not only simple in structure, but also convenient and quick to install and disassemble. During assembly, users can easily connect the various functional filter elements in series. When replacing the filter element, no complicated tools are required. The failed functional filter element can be quickly disassembled and replaced, which greatly improves the efficiency of filter element assembly and replacement, reduces the difficulty of operation, and makes it convenient for users to maintain themselves.

[0026] The bottom of the outer shell 2 is provided with an annular groove 13, and the bottom of the outlet area of ​​the isolation member 4 is sealed and fixed in the annular groove 13 by adhesive.

[0027] Separating the outer shell 2 and the separator 4 simplifies the design structure and avoids the problems of complex mold design, high production process requirements, and high scrap rate caused by one-piece molding. This significantly reduces manufacturing costs while improving production efficiency and yield. Furthermore, the annular groove 13 can be configured with multiple concentric rings, allowing for the installation of separators 4 of different diameters according to different needs. This means that different sizes of the first filter media cavity 8 and the second filter media cavity 9 can be selected to further enhance flexibility. For example, if a user only needs simple water filtration and a single functional filter element is sufficient, a larger diameter separator 4 can be selected, increasing the size of the first filter media cavity 8 and decreasing the size of the second filter media cavity 9. A first filter element made of PP cotton is placed in the first filter media cavity 8 to intercept large particulate pollutants such as dust, hair, pet dander, and fibers. A second filter element made of activated carbon is placed in the second filter media cavity 9. Since the volume and number of large particulate impurities in water far exceed those of organic matter, the pre-filter needs a larger area to accommodate impurities, preventing clogging in a short time and extending the overall service life of the filter element.

[0028] The lower end of the water inlet pipe 5 is separated from the partition plate 7, forming a first connecting part 14 that connects the water inlet pipe 5 to the first filter material cavity 8. The upper end of the inlet area of ​​the isolation member 4 is separated from the upper cover 3, forming a second connecting part 15 that connects the first filter material cavity 8 to the second filter material cavity 9. This design optimizes the flow path of water in the functional filter element, ensuring that the fluid can fully contact the filter material, making the filtration process smoother and more efficient, reducing water resistance, avoiding dead zones in filtration, and further improving the filtration effect and efficiency.

[0029] In this invention, the term "multiple" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An assembled composite filter element, characterized by The composite filter element is composed of several functional filter elements (1) installed end to end. Each functional filter element (1) includes a shell (2), a top cover (3), and a separator (4). The top cover (3) has an inlet pipe (5) at its center, and the shell (2) has an outlet pipe (6) at its bottom. The separator (4) has a partition (7) inside, dividing it into an inlet area and an outlet area. The lower end of the outlet area is sealed and fixed to the bottom of the shell (2). The inner wall of the inlet area and the outer wall of the inlet pipe (5) form a connection that communicates with the inlet pipe (5). The first filter material cavity (8) is formed between the outer wall of the isolation member (4) and the inner wall of the outer shell (2) and communicates with the first filter material cavity (8). The side wall of the outlet area is arranged in a ring with a plurality of communication holes (10) for communicating the second filter material cavity (9) with the water outlet pipe (6). The first filter material cavity (8) and the second filter material cavity (9) are respectively equipped with a first filter element (11) and a second filter element (12). The water outlet pipe (6) of one of the functional filter elements (1) is sealed and installed in the water inlet pipe (5) of another functional filter element (1).

2. The assembled composite filter cartridge of claim 1, wherein The outer side of the upper end of the outer shell (2) is provided with a first external thread, and the upper cover (3) is provided with a first internal thread corresponding to the first external thread. The first external thread and the first internal thread are spirally sealed together.

3. The assembled composite filter cartridge of claim 1, wherein The upper end of the water inlet pipe (5) is provided with a second internal thread, and the water outlet pipe (6) is provided with a second external thread corresponding to the second internal thread. The second internal thread and the second external thread are spirally sealed together.

4. The assembled composite filter cartridge of claim 1, wherein The bottom of the outer shell (2) is provided with an annular groove (13), and the bottom of the outlet area of ​​the isolation member (4) is sealed and fixed in the annular groove (13) by adhesive.

5. The assembled composite filter cartridge of claim 1, wherein The lower end of the water inlet pipe (5) is separated from the partition plate (7) to form a first connecting part (14) that connects the water inlet pipe (5) to the first filter material cavity (8).

6. The assembled composite filter cartridge of claim 1, wherein The upper end of the inlet area of ​​the isolation member (4) is separated from the upper cover (3) to form a second connecting part (15) that connects the first filter material cavity (8) and the second filter material cavity (9).

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