Composite filter element and water purifier

Abstract

The composite filter element comprises a filter bottle body and a first activated carbon assembly, a cavity, a first water inlet and a first water outlet are formed in the filter bottle body, the first activated carbon assembly is arranged in the cavity, and the first activated carbon assembly comprises first activated carbon, a first water inlet filter layer and a first water outlet filter layer. The first activated carbon is of a hollow structure, the first water inlet filtering layer is arranged on the inner wall of the first activated carbon and forms a first water cavity communicating with the first water inlet in an enclosing mode, and the first water outlet filtering layer is arranged on the outer wall of the first activated carbon and forms a second water cavity communicating with the first water outlet with the inner wall of the cavity in an enclosing mode. Water in the first water cavity sequentially passes through the first water inlet filtering layer, the first activated carbon and the first water outlet filtering layer to reach the second water cavity, the first water inlet filtering layer and the first water outlet filtering layer are both made of hydrophobic materials, and therefore the situation that substances such as a scale inhibitor, a bacteriostatic agent, a bactericide and mineralized materials in the first activated carbon are released into surrounding water can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to a composite filter element and a water purifier. Background Art

[0002] As people's living standards improve, they pay more and more attention to water quality and hygiene. It has become a trend to equip families with water purification equipment. The water purification equipment on the market uses an activated carbon filter to filter water through the activated carbon filter. The scale inhibitor, antibacterial agent, bactericide, mineralized material and other substances added to the activated carbon filter are released into the water outside the activated carbon filter, thereby producing pure water for drinking. However, when the traditional activated carbon filter is not producing water, the added substances in it will also be released into the surrounding water, which will affect the life of the added substances in the activated carbon filter. Utility Model Content

[0003] In order to overcome at least one defect of the above-mentioned prior art, the utility model provides a composite filter element and a water purifier to solve the problem that the additives in the existing activated carbon filter element will be released into the surrounding water when not producing water, which will affect the life of the additives in the activated carbon filter element.

[0004] The utility model is a technical solution adopted to solve the problem. In the first aspect, the embodiment of the utility model discloses a composite filter element, including a filter bottle body and a first activated carbon component, the filter bottle body is provided with a cavity and a first water inlet and a first water outlet connected to the cavity, the first activated carbon component is arranged in the cavity, the first activated carbon component includes a first activated carbon, a first water inlet filter layer and a first water outlet filter layer, the first activated carbon is a hollow structure, the first water inlet filter layer is arranged on the inner wall of the first activated carbon and encloses a first water cavity connected to the first water inlet, the first water outlet filter layer is arranged on the outer wall of the first activated carbon and encloses with the inner wall of the cavity to form a second water cavity connected to the first water outlet, the water to be filtered enters the first water cavity from the first water inlet, enters the second water cavity after being filtered by the first water inlet filter layer, the first activated carbon and the first water outlet filter layer in sequence, and is discharged from the first water outlet.

[0005] As an optional implementation, in an embodiment of the first aspect of the utility model, the filter bottle body is a cylindrical filter bottle body, the first water inlet and the first water outlet are both arranged at one end of the filter bottle body, the first activated carbon is a long tubular activated carbon, and the first activated carbon is coaxially arranged with the filter bottle body.

[0006] As an optional embodiment, in an embodiment of the first aspect of the utility model, the first activated carbon component also includes two first end covers, which are respectively mounted on the two ends of the first activated carbon, and one of the first end covers is provided with a first through hole, which is connected to the first water inlet and the first water cavity formed by the first water inlet filter layer.

[0007] As an optional embodiment, in an embodiment of the first aspect of the utility model, the filter bottle body is provided with a first sleeve extending toward the cavity and connected to the first water inlet, wherein a second sleeve is formed on the first end cover, the first through hole is provided in the second sleeve, and the second sleeve extends into the first sleeve so that the first through hole is connected to the first water inlet.

[0008] As an optional embodiment, in an embodiment of the first aspect of the utility model, the composite filter element also includes a second activated carbon component, the filter bottle body is provided with a second water inlet and a second water outlet connected to the cavity, the second activated carbon component is arranged in the cavity and is mounted outside the first activated carbon component, a partition is provided between the first activated carbon component and the second activated carbon component, the first water outlet filter layer and the partition enclose the second water cavity, and the second activated carbon component is connected to the second water inlet and the second water outlet.

[0009] As an optional embodiment, in an embodiment of the first aspect of the utility model, the second activated carbon component includes a second activated carbon, a second water inlet filter layer and a second water outlet filter layer, the second activated carbon is a hollow structure, the first activated carbon component and the partition are both located in the hollow structure of the second activated carbon, the second water inlet filter layer is arranged on the inner wall of the second activated carbon and is enclosed with the partition to form a third water cavity connected to the second water inlet, the second water outlet filter layer is arranged on the outer wall of the second activated carbon and is enclosed with the inner wall of the cavity to form a fourth water cavity connected to the second water outlet, the water to be filtered enters the third water cavity from the second water inlet, passes through the second water inlet filter layer, the second activated carbon and the second water outlet filter layer in sequence, and then enters the fourth water cavity, and is discharged from the second water outlet.

[0010] As an optional embodiment, in the embodiment of the first aspect of the utility model, the second activated carbon component also includes two second end covers, which are respectively mounted on the two ends of the second activated carbon, and one of the second end covers is provided with a second through hole, and the second through hole is connected to the second water inlet and the third water cavity formed by the second water inlet filter layer.

[0011] As an optional embodiment, in an embodiment of the first aspect of the utility model, a third sleeve extending toward the cavity and connected to the second water inlet is provided on the filter bottle body, wherein a fourth sleeve is formed on the second end cover, the second through hole is provided in the third sleeve, and the fourth sleeve extends into the third sleeve so that the second through hole is connected to the second water inlet.

[0012] As an optional embodiment, in an embodiment of the first aspect of the utility model, the composite filter element also includes a second activated carbon component, the filter bottle body is provided with a second water inlet and a second water outlet connected to the cavity, the second activated carbon component is arranged in the cavity and is spaced apart from the first activated carbon component, a partition is provided between the first activated carbon component and the second activated carbon component, the first water outlet filter layer, the partition and the inner wall of the cavity enclose the second water cavity, and the second activated carbon component is connected to the second water inlet and the second water outlet.

[0013] In a second aspect, an embodiment of the utility model discloses a water purifier, comprising a water purifier body and the composite filter element as described above, wherein the composite filter element is arranged on the water purifier body.

[0014] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0015] The utility model is provided with a filter bottle body and a first activated carbon component, the filter bottle body is provided with a cavity and a first water inlet and a first water outlet connected to the cavity, the first activated carbon component is arranged in the cavity, the first activated carbon component includes a first activated carbon, a first water inlet filter layer and a first water outlet filter layer, the first activated carbon is a hollow structure, the first water inlet filter layer is arranged on the inner wall of the first activated carbon and encloses to form a first water cavity connected to the first water inlet, the first water outlet filter layer is arranged on the outer wall of the first activated carbon and encloses with the inner wall of the cavity to form a second water cavity connected to the first water outlet, the water to be filtered enters the first water cavity from the first water inlet, passes through the first water inlet filter layer, the first activated carbon and the first water outlet filter layer in sequence, and then enters the second water cavity, and is discharged from the first water outlet. Wherein, the materials of the first water inlet filter layer and the first water outlet filter layer are both hydrophobic materials. With such a design, when the composite filter element of the present scheme is in the water-making state, under the action of water pressure, water enters the first water cavity from the first water inlet and passes through the first water inlet filter layer, the first activated carbon and the first water outlet filter layer in turn to enter the second water cavity, and finally the water is discharged from the first water outlet; when the composite filter element of the present scheme is in the non-water-making state, since the first water inlet filter layer and the first water outlet filter layer are both hydrophobic materials, the water in the first activated carbon can be prevented from exchanging with the surrounding water, thereby preventing the scale inhibitor, antibacterial agent, bactericide, mineralized material and other substances in the first activated carbon from being released into the surrounding water, that is, the first water inlet filter layer and the first water outlet filter layer can lock the scale inhibitor, antibacterial agent, bactericide, mineralized material and other substances in the first activated carbon, thereby extending the service life of the composite filter element. In addition, the first water inlet filter layer and the first water outlet filter layer can intercept the carbon powder released from the first activated carbon, thereby avoiding the appearance of black water. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the composite filter element in the first embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the composite filter element in the second embodiment of the present utility model.

[0019] The meanings of the reference numerals are as follows:

[0020] 1-filter bottle body; 12-first water inlet; 13-first water outlet; 14-first sleeve; 15-second water inlet; 16-second water outlet; 17-third sleeve; 21-first activated carbon; 22-first water inlet filter layer; 23-first water outlet filter layer; 24-first end cover; 241-first through hole; 242-second sleeve; 25-first water cavity; 26-second water cavity; 31-second activated carbon; 32-second water inlet filter layer; 33-second water outlet filter layer; 34-second end cover; 341-second through hole; 342-fourth sleeve; 35-third water cavity; 36-fourth water cavity; 4-partitioning member. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0023] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0024] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0025] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0026] The technical solution of the utility model will be further described below in conjunction with embodiments and drawings.

[0027] Embodiment 1

[0028] See also Figure 1 The utility model discloses a water purifier, which includes a water purifier body (not shown) and a composite filter element, wherein the composite filter element is arranged on the water purifier body. The composite filter element of the present scheme includes a filter bottle body 1 and a first activated carbon component. The filter bottle body 1 is provided with a cavity and a first water inlet 12 and a first water outlet 13 connected to the cavity. The first activated carbon component is arranged in the cavity. The first activated carbon component includes a first activated carbon 21, a first water inlet filter layer 22 and a first water outlet filter layer 23. The first activated carbon 21 is a hollow structure. The first water inlet filter layer 22 is arranged on the inner wall of the first activated carbon 21 and encloses a first water cavity 25 connected to the first water inlet 12. The first water outlet filter layer 23 is arranged on the outer wall of the first activated carbon 21 and encloses the inner wall of the cavity to form a second water cavity 26 connected to the first water outlet 13. The water to be filtered enters the first water cavity 25 from the first water inlet 12, enters the second water cavity 26 after being filtered through the first water inlet filter layer 22, the first activated carbon 21 and the first water outlet filter layer 23 in turn, and is discharged from the first water outlet 13. Among them, the materials of the first water inlet filter layer 22 and the first water outlet filter layer 23 are both hydrophobic materials. With such a design, when the composite filter element of this scheme is in the water production state, under the action of water pressure, water enters the first water cavity 25 from the first water inlet 12, passes through the first water inlet filter layer 22, the first activated carbon 21 and the first water outlet filter layer 23 in sequence to enter the second water cavity 26, and finally the water is discharged from the first water outlet 13; when the composite filter element of this scheme is in the non-water production state, since the first water inlet filter layer 22 and the first water outlet filter layer 23 are both hydrophobic materials, the water in the first activated carbon 21 can be prevented from exchanging with the surrounding water, thereby preventing the scale inhibitor, antibacterial agent, bactericide, mineralized material and other substances in the first activated carbon 21 from being released into the surrounding water, that is, the first water inlet filter layer 22 and the first water outlet filter layer 23 can lock the scale inhibitor, antibacterial agent, bactericide, mineralized material and other substances in the first activated carbon 21, thereby extending the service life of the composite filter element. In addition, the first water inlet filter layer 22 and the first water outlet filter layer 23 can intercept the carbon powder released from the first activated carbon 21, thereby avoiding the generation of black water.

[0029] Among them, the main function of the first activated carbon 21 is to absorb impurities and odors in the water and adjust the taste of the water. The first activated carbon 21 may also contain scale inhibitors, antibacterial agents, bactericides, mineralized materials and other substances, which are not limited here. The first activated carbon 21 can be in the form of granular carbon, carbon rods, etc., which are not limited here; the inner and first water outlet filter layers 23 can be filter materials such as origami PP, non-woven fabrics, melt-blown PP, etc., which are not limited here.

[0030] In some embodiments, the filter bottle body 1 is a cylindrical filter bottle body, the first water inlet 12 and the first water outlet 13 are both arranged at one end of the filter bottle body 1, the first activated carbon 21 is a long tubular activated carbon, and the first activated carbon 21 is coaxially arranged with the filter bottle body 1. The design of the tubular first activated carbon 21 can increase the water inlet area and the water outlet area, thereby improving the filtration efficiency of the first activated carbon assembly.

[0031] Furthermore, the first activated carbon component also includes two first end caps 24, which are respectively sleeved on the two ends of the first activated carbon 21, and one of the first end caps 24 is provided with a first through hole 241, which is connected to the first water inlet 12 and the first water inlet filter layer 22 to form a first water cavity 25. With such a design, one of the first end caps 24 is provided with a first through hole 241 connected to the first water inlet 12, so that water entering from the first water inlet 12 can be introduced into the first water cavity 25 formed by the first water inlet filter layer 22; and the other first end cap 24 is sleeved on the other end of the first activated carbon 21, so that water that has not been filtered by the first water inlet filter layer 22 can be prevented from being discharged from the other end of the tubular first activated carbon 21.

[0032] Furthermore, the filter bottle body 1 is provided with a first sleeve 14 extending toward the cavity and connected to the first water inlet 12, and a second sleeve 242 is formed on one of the first end caps 24, and the first through hole 241 is provided in the second sleeve 242, and the second sleeve 242 extends into the first sleeve 14, so that the first through hole 241 is connected to the first water inlet 12. With such a design, on the one hand, by providing the first sleeve 14 on the filter bottle body 1 and providing the second sleeve 242 having the first through hole 241 on one of the first end caps 24, and sleeve-connecting the two, direct connection between the first through hole 241 and the first water inlet 12 can be achieved; on the other hand, by providing the first sleeve 14 and the second sleeve 242, the path of the connection between one of the first end caps 24 and the filter bottle body 1 can be extended, thereby improving the sealing between the connection between one of the first end caps 24 and the filter bottle body 1.

[0033] The utility model provides a water purifier, which includes a filter bottle body 1 and a first activated carbon component. The filter bottle body 1 is provided with a cavity and a first water inlet 12 and a first water outlet 13 connected to the cavity. The first activated carbon component is arranged in the cavity. The first activated carbon component includes a first activated carbon 21, a first water inlet filter layer 22 and a first water outlet filter layer 23. The first activated carbon 21 is a hollow structure. The first water inlet filter layer 22 is arranged on the inner wall of the first activated carbon 21 and encloses a first water cavity 25 connected to the first water inlet 12. The first water outlet filter layer 23 is arranged on the outer wall of the first activated carbon 21 and encloses with the inner wall of the cavity to form a second water cavity 26 connected to the first water outlet 13. Water to be filtered enters the first water cavity 25 from the first water inlet 12, passes through the first water inlet filter layer 22, the first activated carbon 21 and the first water outlet filter layer 23 in sequence, and then enters the second water cavity 26 and is discharged from the first water outlet 13. The materials of the filter layer 22 and the first water outlet filter layer 23 are both hydrophobic materials. With such a design, when the composite filter element of the present scheme is in the water production state, under the action of water pressure, water enters the first water chamber 25 from the first water inlet 12 and then passes through the first water inlet filter layer 22, the first activated carbon 21 and the first water outlet filter layer 23 in sequence to enter the second water chamber 26, and finally the water is discharged from the first water outlet 13; when the composite filter element of the present scheme is in the non-water production state, since the first water inlet filter layer 22 and the first water outlet filter layer 23 are both hydrophobic materials, the water in the first activated carbon 21 can be prevented from exchanging with the surrounding water, thereby preventing the scale inhibitor, bacteriostatic agent, bactericide, mineralized material and other substances in the first activated carbon 21 from being released into the surrounding water, that is, the first water inlet filter layer 22 and the first water outlet filter layer 23 can lock the scale inhibitor, bacteriostatic agent, bactericide, mineralized material and other substances in the first activated carbon 21, thereby extending the service life of the composite filter element. In addition, the first water inlet filter layer 22 and the first water outlet filter layer 23 can intercept the carbon powder released from the first activated carbon 21, thereby avoiding the generation of black water.

[0034] Embodiment 2

[0035] See also Figure 2 The water purifier of the second embodiment is different from the water purifier of the first embodiment in that the composite filter element also includes a second activated carbon component, the filter bottle body 1 is provided with a second water inlet 15 and a second water outlet 16 connected to the cavity, the second activated carbon component is arranged in the cavity and sleeved outside the first activated carbon component, a partition 4 is provided between the first activated carbon component and the second activated carbon component, the first water outlet filter layer 23 and the partition 4 are enclosed to form a second water cavity 26, and the second activated carbon component is connected to the second water inlet 15 and the second water outlet 16. With such a design, adding a second activated carbon component can improve the water production efficiency of the composite filter element, thereby improving the water production efficiency of the water purifier.

[0036] The separator 4 separates the first activated carbon component from the second activated carbon component, so that the two groups of activated carbon components can operate independently without interfering with each other.

[0037] In some embodiments, the second activated carbon component includes a second activated carbon 31, a second water inlet filter layer 32 and a second water outlet filter layer 33. The second activated carbon 31 is a hollow structure. The first activated carbon component and the separator 4 are both located in the hollow structure of the second activated carbon. The second water inlet filter layer 32 is arranged on the inner wall of the second activated carbon 31 and is enclosed with the separator 4 to form a third water cavity 35 connected to the second water inlet 15. The second water outlet filter layer 33 is arranged on the outer wall of the second activated carbon 31 and is enclosed with the inner wall of the cavity to form a fourth water cavity 36 connected to the second water outlet 16. The water to be filtered enters the third water cavity 35 from the second water inlet 15, and enters the fourth water cavity 36 after being filtered through the second water inlet filter layer 32, the second activated carbon 31 and the second water outlet filter layer 33 in turn, and is discharged from the second water outlet 16.

[0038] Furthermore, the second activated carbon component also includes two second end covers 34, which are respectively mounted on both ends of the second activated carbon 31, and one of the second end covers 34 is provided with a second through hole 341, which is connected to the third water cavity 35 formed by the second water inlet 15 and the second water inlet filter layer 32.

[0039] Furthermore, the filter bottle body 1 is provided with a third sleeve 17 extending toward the cavity and connected to the second water inlet 15, wherein a fourth sleeve 342 is formed on a second end cover 34, the second through hole 341 is provided in the third sleeve 17, and the fourth sleeve 342 extends into the third sleeve 17 so that the second through hole 341 is connected to the second water inlet 15.

[0040] The specific structural design of the water purifier in this embodiment can be referred to in Example 1, and will not be described in detail here.

[0041] Embodiment 3

[0042] The water purifier of the third embodiment (not shown) differs from the water purifier of the second embodiment in that the composite filter element also includes a second activated carbon component, the filter bottle body is provided with a second water inlet and a second water outlet connected to the cavity, the second activated carbon component is arranged in the cavity and is spaced apart from the first activated carbon component, a partition is provided between the first activated carbon component and the second activated carbon component, the first water outlet filter layer, the partition and the inner wall of the cavity enclose a second water cavity, and the second activated carbon component is connected to the second water inlet and the second water outlet.

[0043] The specific structural design of the water purifier in this embodiment can refer to Example 2, which will not be described in detail here. The above is a detailed introduction to a water purifier disclosed in the embodiment of the utility model. This article uses individual examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the water purifier of the utility model and its core idea; at the same time, for general technicians in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A composite filter element, characterized in that: The invention comprises a filter bottle body (1) and a first activated carbon component, wherein the filter bottle body (1) is provided with a cavity and a first water inlet (12) and a first water outlet (13) connected to the cavity, the first activated carbon component is arranged in the cavity, the first activated carbon component comprises a first activated carbon (21), a first water inlet filter layer (22) and a first water outlet filter layer (23), the first activated carbon (21) is a hollow structure, the first water inlet filter layer (22) is arranged on the inner wall of the first activated carbon (21) and encloses a cavity connected to the first water inlet ( The first water outlet filter layer (23) is arranged on the outer wall of the first activated carbon (21) and is enclosed with the inner wall of the cavity to form a second water cavity (26) connected to the first water outlet (13); water to be filtered enters the first water cavity (25) from the first water inlet (12), passes through the first water inlet filter layer (22), the first activated carbon (21) and the first water outlet filter layer (23) in sequence, and then enters the second water cavity (26) and is discharged from the first water outlet (13).

2. The composite filter element according to claim 1, characterized in that: The filter bottle body (1) is a cylindrical filter bottle body, the first water inlet (12) and the first water outlet (13) are both arranged at one end of the filter bottle body (1), the first activated carbon (21) is a long tubular activated carbon, and the first activated carbon (21) is coaxially arranged with the filter bottle body (1).

3. The composite filter element according to claim 2, characterized in that: The first activated carbon component further comprises two first end covers (24), the two first end covers (24) being respectively sleeved on the two ends of the first activated carbon (21), one of the first end covers (24) being provided with a first through hole (241), the first through hole (241) being connected to a first water cavity (25) formed by the first water inlet (12) and the first water inlet filter layer (22).

4. The composite filter element according to claim 3, characterized in that: The filter bottle body (1) is provided with a first sleeve (14) extending toward the cavity and connected to the first water inlet (12), wherein a second sleeve (242) is formed on the first end cover (24), the first through hole (241) is provided in the second sleeve (242), and the second sleeve (242) extends into the first sleeve (14) so ​​that the first through hole (241) is connected to the first water inlet (12).

5. The composite filter element according to any one of claims 1 to 4, characterized in that: The composite filter element further comprises a second activated carbon component, the filter bottle body (1) is provided with a second water inlet (15) and a second water outlet (16) connected to the cavity, the second activated carbon component is arranged in the cavity and sleeved outside the first activated carbon component, a partition (4) is provided between the first activated carbon component and the second activated carbon component, the first water outlet filter layer (23) and the partition (4) enclose the second water cavity (26), and the second activated carbon component is connected to the second water inlet (15) and the second water outlet (16).

6. The composite filter element according to claim 5, characterized in that: The second activated carbon component comprises a second activated carbon (31), a second water inlet filter layer (32) and a second water outlet filter layer (33); the second activated carbon (31) is a hollow structure; the first activated carbon component and the partition (4) are both located in the hollow structure of the second activated carbon (31); the second water inlet filter layer (32) is arranged on the inner wall of the second activated carbon (31) and is enclosed with the partition (4) to form a third water cavity (35) connected to the second water inlet (15); the second water outlet filter layer (33) is arranged on the outer wall of the second activated carbon (31) and is enclosed with the inner wall of the cavity to form a fourth water cavity (36) connected to the second water outlet (16); water to be filtered enters the third water cavity (35) from the second water inlet (15), passes through the second water inlet filter layer (32), the second activated carbon (31) and the second water outlet filter layer (33) in sequence, and then enters the fourth water cavity (36) and is discharged from the second water outlet (16).

7. The composite filter element according to claim 6, characterized in that: The second activated carbon component further comprises two second end covers (34), the two second end covers (34) being respectively sleeved on the two ends of the second activated carbon (31), one of the second end covers (34) being provided with a second through hole (341), the second through hole (341) being connected to a third water cavity (35) formed by the second water inlet (15) and the second water inlet filter layer (32).

8. The composite filter element according to claim 7, characterized in that: The filter bottle body (1) is provided with a third sleeve (17) extending toward the cavity and connected to the second water inlet (15), wherein a fourth sleeve (342) is formed on the second end cover (34), the second through hole (341) is provided in the third sleeve (17), and the fourth sleeve (342) extends into the third sleeve (17) so that the second through hole (341) is connected to the second water inlet (15).

9. The composite filter element according to claim 6, characterized in that: The composite filter element further comprises a second activated carbon component, the filter bottle body (1) is provided with a second water inlet (15) and a second water outlet (16) connected to the cavity, the second activated carbon component is arranged in the cavity and is spaced apart from the first activated carbon component, a partition (4) is provided between the first activated carbon component and the second activated carbon component, the first water outlet filter layer (23) and the partition (4) and the inner wall of the cavity enclose the second water cavity (26), and the second activated carbon component is connected to the second water inlet (15) and the second water outlet (16).

10. A water purifier, characterized in that: It comprises a water purifier body and a composite filter element as claimed in any one of claims 1 to 9, wherein the composite filter element is arranged on the water purifier body.

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