阅读说明：本技术 复合滤芯及净水设备 (Composite filter element and water purification equipment ) 是由 陈伟明 于 2018-07-09 设计创作，主要内容包括：本发明公开一种复合滤芯及净水设备,该复合滤芯包括壳体、隔离组件、第一滤材、第二滤材和第三滤材,壳体内有过滤腔；隔离组件设于过滤腔内,且将过滤腔分隔为相互独立的第一滤腔和第二滤腔,第一滤腔具有呈依次连通的进水通道、汇流通道、二次过滤通道以及出水通道；壳体上设有与进水通道相连通的第一进水口、以及与出水通道相连通的第一出水口,壳体上还设有与第二滤腔相连通的第二进水口和第二出水口；第一滤材设于进水通道内,且位于第一进水口和汇流通道之间；第二滤材设于第二滤腔内,且位于第二进水口和第二出水口之间；第三滤材设于二次过滤通道内。本发明技术方案提高了复合滤芯内的第一滤材的整体利用率。(The invention discloses a composite filter element and water purification equipment, wherein the composite filter element comprises a shell, an isolation component, a first filter material, a second filter material and a third filter material, wherein a filter cavity is formed in the shell; the isolation assembly is arranged in the filtering cavity and divides the filtering cavity into a first filtering cavity and a second filtering cavity which are mutually independent, and the first filtering cavity is provided with a water inlet channel, a confluence channel, a secondary filtering channel and a water outlet channel which are sequentially communicated; the shell is provided with a first water inlet communicated with the water inlet channel and a first water outlet communicated with the water outlet channel, and the shell is also provided with a second water inlet and a second water outlet communicated with the second filter cavity; the first filter material is arranged in the water inlet channel and is positioned between the first water inlet and the confluence channel; the second filter material is arranged in the second filter cavity and is positioned between the second water inlet and the second water outlet; the third filter material is arranged in the secondary filter channel. The technical scheme of the invention improves the overall utilization rate of the first filter material in the composite filter element.)

1. The utility model provides a composite filter element for water purification unit, its characterized in that, composite filter element includes:

a housing having a filter chamber therein;

the isolation assembly is arranged in the filtering cavity and divides the filtering cavity into a first filtering cavity and a second filtering cavity which are mutually independent, and the first filtering cavity is provided with a water inlet channel, a confluence channel, a secondary filtering channel and a water outlet channel which are sequentially communicated; the shell is provided with a first water inlet communicated with the water inlet channel and a first water outlet communicated with the water outlet channel, and the shell is also provided with a second water inlet and a second water outlet communicated with the second filter cavity;

the first filter material is arranged in the water inlet channel and is positioned between the first water inlet and the confluence channel;

the second filter material is arranged in the second filter cavity and is positioned between the second water inlet and the second water outlet; and

and the third filter material is arranged in the secondary filtering channel.

2. The composite filter element of claim 1, wherein the first filter has opposite ends, the first water inlet is disposed proximate one end of the first filter, and the water inlet of the converging channel is disposed proximate the other end of the first filter.

3. The composite filter element of claim 1, wherein the barrier assembly comprises:

the middle barrel is arranged in the shell, and a water passing port is formed in the lower end of the middle barrel;

the confluence barrel is positioned in the shell and sleeved at the lower end of the middle barrel, the confluence passage is formed in the confluence barrel, and the confluence passage is communicated with the water passing port; and

the inner barrel is positioned in the middle barrel, the second filtering cavity is formed in the inner barrel, and the secondary filtering channel is formed between the lower end face of the inner barrel and the lower end face of the middle barrel at intervals;

the inner side of the shell and the outer side of the middle barrel form the water inlet channel at intervals, and the confluence barrel is positioned below the water inlet channel; the water outlet channel is formed between the outer side of the inner barrel and the inner side of the middle barrel at intervals; the upstream of the secondary filtering channel is communicated with the water passing port, and the downstream of the secondary filtering channel is communicated with the water outlet channel.

4. The composite filter element according to claim 3, wherein the third filter element is provided in a cylindrical shape, an upper end surface of the third filter element is in sealing contact with a lower end surface of the inner barrel, and a lower end surface of the third filter element is in sealing contact with a lower end surface of the middle barrel;

the inner space of the third filter material is communicated with the water passing hole, and the outer space of the third filter material is communicated with the water outlet channel.

5. The composite filter element as claimed in claim 4, wherein the lower end surface of the inner barrel is extended downwards along the circumferential direction thereof with an annular flange, the third filter material is positioned at the inner side of the annular flange, and a gap is arranged between the outer circumferential surface of the third filter material and the inner circumferential surface of the annular flange;

the lower end surface of the middle barrel is provided with an abutting rib in an upward protruding mode, the abutting rib abuts against the annular flange, so that a water passing gap is defined between the annular flange and the bottom end of the middle barrel, and the water passing gap is used for communicating the inner side and the outer side of the annular flange.

6. The composite filter element of claim 4, further comprising a first end cap and a second end cap, wherein the first end cap is positioned between the upper end face of the third filter element and the lower end face of the inner barrel, and the first end cap is in sealing abutment with the upper end face of the third filter element;

the second end cover is arranged between the lower end face of the third filter material and the lower end face of the middle barrel, the second end cover is abutted to the lower end face of the third filter material, a first opening is formed in the second end cover corresponding to the water passing opening, and the first opening is communicated with the water passing opening and the inner space of the third filter material.

7. The composite filter element of claim 6, wherein the second end cap has a first flow directing port extending downwardly along the edge of the first opening, the first flow directing port sealingly extending through the water gap such that the first flow directing port communicates with the interior space of the manifold and the interior space of the third filter.

8. The composite filter element according to claim 3, wherein the third filter material is a granular filter material, the composite filter element further comprises a filter barrel arranged between the inner barrel and the middle barrel, the third filter material is filled in the filter barrel, a second drainage port extends towards the lower end of the filter barrel, and the second drainage port penetrates through the water passing port in a sealing manner so as to communicate the confluence channel with the interior of the filter barrel;

and a second opening is formed in the position, close to the upper end of the outer peripheral surface of the filter barrel, and the second opening is communicated with the water outlet channel and the interior of the filter barrel.

9. The composite filter element according to claim 8, wherein the lower end of the inner barrel extends downwards along the circumferential direction thereof with an annular flange, the filter barrel is positioned at the inner side of the annular flange, and a gap is arranged between the outer circumferential surface of the filter barrel and the inner circumferential surface of the annular flange;

the lower end surface of the middle barrel is provided with an abutting rib in an upward protruding mode, the abutting rib abuts against the annular flange, so that a water passing gap is defined between the annular flange and the bottom end of the middle barrel, and the water passing gap is used for communicating the inner side and the outer side of the annular flange.

10. The composite filter element of claim 3, wherein the combiner barrel comprises:

the upper end of the barrel body is open;

the confluence ribs are arranged on the inner circumferential surface of the barrel body along the axial direction of the barrel body, a plurality of confluence ribs are arranged at intervals along the circumferential direction of the barrel body, a confluence groove is formed between every two adjacent confluence ribs, and the upper end of the confluence groove is communicated with the water inlet channel;

the outer surface of the middle barrel is abutted to the confluence rib, a confluence gap is formed between the lower end face of the middle barrel and the lower end face of the barrel body at intervals, the confluence gap is communicated with the water passing port, and the lower end of the confluence groove is communicated with the confluence gap to form the confluence channel.

11. The composite filter element of claim 3, wherein the housing comprises:

the upper end of the outer barrel is open, and the middle barrel and the confluence barrel are both arranged in the outer barrel;

and the filter element joint is sealed and closed at the upper end of the outer barrel, and the filter element joint is provided with the first water inlet, the first water outlet, the second water inlet and the second water outlet.

12. The composite filter element according to any one of claims 3 to 11, wherein the first filter material is arranged in a cylindrical shape and sleeved outside the middle barrel, and a gap is formed between the inner circumferential surface of the first filter material and the outer circumferential surface of the middle barrel;

the inner space of the first filter material is communicated with the confluence channel, and the outer space of the first filter material is communicated with the first water inlet.

13. The composite filter element according to any one of claims 3 to 11, wherein the second filter element is disposed in a cylindrical shape, and an inner space of the second filter element is communicated with the second water outlet, and an outer space of the second filter element is communicated with the second water inlet.

14. A water purification apparatus, comprising a composite filter element according to any one of claims 1 to 13.

Technical Field

The invention relates to the technical field of water purification equipment, in particular to a composite filter element and water purification equipment.

Background

Along with the continuous improvement of living standard of people, people also have higher and higher requirements on the water quality of water, so that water purifying equipment such as a water purifier is also concerned by people. The existing water purifier is gradually developing towards a miniaturized mode, a multi-stage filter element filtering system in the water purifier is often realized by adopting a composite filter element structure, and then the purpose of reducing the volume of a filter element and improving the water quality purifying effect is achieved.

In order to meet the filtering requirements of users on various water qualities, a plurality of mutually independent filtering cavities can be formed inside the composite filter element, so that the composite filter element is provided with a plurality of mutually independent filtering channels, and the filtering on different water qualities is realized. However, for this composite filter element, the filter media is located corresponding filter chamber, and rivers pass through from being close to the position department that is close to the inlet outlet of filter chamber on the filter media easily, and rivers are relatively poor at the circulation effect of other positions departments of filter media, and then can lead to the overall utilization of filter media to be relatively poor.

Disclosure of Invention

The invention mainly aims to provide a composite filter element for water purifying equipment, and aims to improve the overall utilization rate of a first filter material in the composite filter element.

In order to achieve the above object, the present invention provides a composite filter element comprising:

a housing having a filter chamber therein;

the isolation assembly is arranged in the filtering cavity and divides the filtering cavity into a first filtering cavity and a second filtering cavity which are mutually independent, and the first filtering cavity is provided with a water inlet channel, a confluence channel, a secondary filtering channel and a water outlet channel which are sequentially communicated; the shell is provided with a first water inlet communicated with the water inlet channel and a first water outlet communicated with the water outlet channel, and the shell is also provided with a second water inlet and a second water outlet communicated with the second filter cavity;

the first filter material is arranged in the water inlet channel and is positioned between the first water inlet and the confluence channel;

the second filter material is arranged in the second filter cavity and is positioned between the second water inlet and the second water outlet; and

and the third filter material is arranged in the secondary filtering channel.

Preferably, the first filter material has two opposite ends, the first water inlet is disposed near one end of the first filter material, and the water inlet of the confluence channel is disposed near the other end of the first filter material.

Preferably, the isolation assembly comprises:

the middle barrel is arranged in the shell, and a water passing port is formed in the lower end of the middle barrel;

the confluence barrel is positioned in the shell and sleeved at the lower end of the middle barrel, the confluence passage is formed in the confluence barrel, and the confluence passage is communicated with the water passing port; and

the inner barrel is positioned in the middle barrel, the second filtering cavity is formed in the inner barrel, and the secondary filtering channel is formed between the lower end face of the inner barrel and the lower end face of the middle barrel at intervals;

the inner side of the shell and the outer side of the middle barrel form the water inlet channel at intervals, and the confluence barrel is positioned below the water inlet channel; the water outlet channel is formed between the outer side of the inner barrel and the inner side of the middle barrel at intervals; the upstream of the secondary filtering channel is communicated with the water passing port, and the downstream of the secondary filtering channel is communicated with the water outlet channel.

Preferably, the third filter material is arranged in a cylindrical shape, the upper end face of the third filter material is in sealing contact with the lower end face of the inner barrel, and the lower end face of the third filter material is in sealing contact with the lower end face of the middle barrel;

the inner space of the third filter material is communicated with the water passing hole, and the outer space of the third filter material is communicated with the water outlet channel.

Preferably, an annular flange extends downwards along the circumferential direction of the lower end surface of the inner barrel, the third filter material is positioned on the inner side of the annular flange, and a gap is formed between the outer circumferential surface of the third filter material and the inner circumferential surface of the annular flange;

the lower end surface of the middle barrel is provided with an abutting rib in an upward protruding mode, the abutting rib abuts against the annular flange, so that a water passing gap is defined between the annular flange and the bottom end of the middle barrel, and the water passing gap is used for communicating the inner side and the outer side of the annular flange.

Preferably, the composite filter element further comprises a first end cover and a second end cover, the first end cover is located between the upper end face of the third filter material and the lower end face of the inner barrel, and the first end cover is in sealing and abutting connection with the upper end face of the third filter material;

the second end cover is arranged between the lower end face of the third filter material and the lower end face of the middle barrel, the second end cover is abutted to the lower end face of the third filter material, a first opening is formed in the second end cover corresponding to the water passing opening, and the first opening is communicated with the water passing opening and the inner space of the third filter material.

Preferably, the second end cap extends downwards along the edge of the first opening to form a first drainage port, and the first drainage port penetrates through the water passing port in a sealing mode, so that the first drainage port is communicated with the confluence channel and the inner space of the third filter material.

Preferably, the third filter material is a granular filter material, the composite filter element further comprises a filter barrel arranged between the inner barrel and the middle barrel, the third filter material is filled in the filter barrel, a second drainage port extends towards the lower end of the filter barrel, and the second drainage port penetrates through the water passing port in a sealing manner so as to communicate the confluence channel with the interior of the filter barrel;

and a second opening is formed in the position, close to the upper end of the outer peripheral surface of the filter barrel, and the second opening is communicated with the water outlet channel and the interior of the filter barrel.

Preferably, the lower end of the inner barrel extends downwards along the circumferential direction of the inner barrel to form an annular flange, the filter barrel is positioned at the inner side of the annular flange, and a gap is formed between the outer circumferential surface of the filter barrel and the inner circumferential surface of the annular flange;

the lower end surface of the middle barrel is provided with an abutting rib in an upward protruding mode, the abutting rib abuts against the annular flange, so that a water passing gap is defined between the annular flange and the bottom end of the middle barrel, and the water passing gap is used for communicating the inner side and the outer side of the annular flange.

Preferably, the bus duct includes:

the upper end of the barrel body is open;

the confluence ribs are arranged on the inner circumferential surface of the barrel body along the axial direction of the barrel body, a plurality of confluence ribs are arranged at intervals along the circumferential direction of the barrel body, a confluence groove is formed between every two adjacent confluence ribs, and the upper end of the confluence groove is communicated with the water inlet channel;

the outer surface of the middle barrel is abutted to the confluence rib, a confluence gap is formed between the lower end face of the middle barrel and the lower end face of the barrel body at intervals, the confluence gap is communicated with the water passing port, and the lower end of the confluence groove is communicated with the confluence gap to form the confluence channel.

Preferably, the housing comprises:

the upper end of the outer barrel is open, and the middle barrel and the confluence barrel are both arranged in the outer barrel;

and the filter element joint is sealed and closed at the upper end of the outer barrel, and the filter element joint is provided with the first water inlet, the first water outlet, the second water inlet and the second water outlet.

Preferably, the first filter material is arranged in a cylindrical shape and sleeved outside the middle barrel, and a gap is formed between the inner circumferential surface of the first filter material and the outer circumferential surface of the middle barrel;

the inner space of the first filter material is communicated with the confluence channel, and the outer space of the first filter material is communicated with the first water inlet.

Preferably, the second filter material is arranged in a cylindrical shape, the inner space of the second filter material is communicated with the second water outlet, and the outer space of the second filter material is communicated with the second water inlet.

The invention also provides water purifying equipment, which comprises a composite filter element, wherein the composite filter element comprises a shell, an isolation component, a first filter material, a second filter material and a third filter material, wherein:

a filter cavity is arranged in the shell; the isolation assembly is arranged in the filtering cavity and divides the filtering cavity into a first filtering cavity and a second filtering cavity which are mutually independent, and the first filtering cavity is provided with a water inlet channel, a confluence channel, a secondary filtering channel and a water outlet channel which are sequentially communicated; the shell is provided with a first water inlet communicated with the water inlet channel and a first water outlet communicated with the water outlet channel, and the shell is also provided with a second water inlet and a second water outlet communicated with the second filter cavity; the first filter material is arranged in the water inlet channel and is positioned between the first water inlet and the confluence channel; the second filter material is arranged in the second filter cavity and is positioned between the second water inlet and the second water outlet; the third filter material is arranged in the secondary filter channel.

According to the technical scheme, the first filter material is arranged in the water inlet channel, purified water filtered by the first filter material is converged by the converging channel, can flow to the water outlet channel and is finally discharged from the first water outlet; the confluence channel is arranged, so that purified water passing through the first filter material can be continuously collected and converged, the water to be purified can uniformly pass through all positions of the first filter material, namely, all positions of the first filter material can realize better filtering effect, the overall utilization rate of the first filter material is further improved, the risk of reducing the overall service life of the first filter material due to the fact that the first filter material is locally consumed and is too heavy is avoided, the filtering effect of the first filter material can be obviously improved, and meanwhile, the normal service life of the first filter material is guaranteed; meanwhile, the first filter cavity is also provided with a secondary filter channel, so that purified water filtered by the first filter material can be secondarily filtered through the third filter material, the water quality of the discharged water at the first water outlet can be further improved, and the water purifying effect of the composite filter element is remarkably improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a composite filter element according to the present invention;

FIG. 2 is an exploded view of the composite filter element of FIG. 1;

FIG. 3 is a schematic view of the internal construction of the composite filter element of FIG. 1;

FIG. 4 is a schematic view of a support cartridge of the composite filter element of FIG. 2;

FIG. 5 is a schematic view of a barrel assembly of the composite filter element of FIG. 2;

FIG. 6 is a schematic view of an internal structure of the bus bar of FIG. 5;

FIG. 7 is a schematic view of the inner barrel of the composite filter element of FIG. 2;

FIG. 8 is a schematic view illustrating an internal structure of the inner barrel of FIG. 7;

FIG. 9 is a schematic view of the third filter element of FIG. 2 installed with the first and second end caps;

FIG. 10 is a schematic view of the second filter element of FIG. 2 mounted to upper and lower end caps;

FIG. 11 is a schematic flow diagram of the composite filter element of FIG. 3;

FIG. 12 is a schematic view of the internal structure of another embodiment of a composite filter element according to the present invention;

fig. 13 is an exploded view of the composite filter element of fig. 12;

FIG. 14 is a schematic view of the construction of the bowl of the composite filter element of FIG. 13;

fig. 15 is a schematic flow diagram of the composite filter element of fig. 12.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a composite filter element which is suitable for water purifying equipment, wherein the water purifying equipment can be water purifiers, water purifiers and the like, and the composite filter element is arranged in the water purifying equipment so as to realize the filtration and purification of water quality.

In an embodiment of the present invention, referring to fig. 1 to 11, the composite filter element 1 includes:

a housing 10 having a filter chamber 100 therein;

the isolating assembly 20 is arranged in the filter cavity 100 and divides the filter cavity 100 into a first filter cavity 130 and a second filter cavity 140 which are independent of each other, and the first filter cavity 130 is provided with a water inlet channel 131, a confluence channel 132, a secondary filter channel 134 and a water outlet channel 133 which are sequentially communicated; the shell 10 is provided with a first water inlet communicated with the water inlet channel 131 and a first water outlet communicated with the water outlet channel 133, and the shell 10 is also provided with a second water inlet and a second water outlet communicated with the second filter cavity 140;

the first filter material 30 is arranged in the water inlet channel 131 and is positioned between the first water inlet and the confluence channel 132;

the second filter material 40 is arranged in the second filter cavity 140 and is positioned between the second water inlet and the second water outlet; and

and the third filter material 80 is arranged in the secondary filtering channel 134.

Composite filter element 1 installs in water purification unit, has two mutually independent filtration passageway in this composite filter element 1, and then realizes the filtration to multiple quality of water to satisfy the water demand of user's multiple quality of water. This composite filter element 1 specifically includes casing 10, isolation component 20, first filter media 30, second filter media 40 and third filter media 80, wherein: a filter cavity 100 is formed in the housing 10, and the isolation assembly 20 divides the filter cavity 100 into a first filter cavity 130 and a second filter cavity 140 which are independent from each other, that is, the first filter cavity 130 and the second filter cavity 140 respectively have independent flow channels, and the water inlet and the water outlet of the first filter cavity 130 and the water outlet of the second filter cavity 140 are not interfered with each other; the first filter chamber 130 has a water inlet channel 131, a converging channel 132, a secondary filtering channel 134 and a water outlet channel 133 which are sequentially communicated, the housing 10 is provided with a first water inlet communicated with the water inlet channel 131 and a first water outlet communicated with the water outlet channel 133, the first filter material 30 is arranged in the water inlet channel 131, and the third filter material 80 is arranged in the secondary filtering channel 134, so that the first filter material 30 and the third filter material 80 form a multi-stage filtering effect in the first filter chamber 130, and the purifying effect of the first filter chamber 130 on water quality can be improved. For the first filter cavity 130, water to be purified enters the water inlet channel 131 from the first water inlet, flows to the confluence channel 132 after being filtered by the first filter material 30, enters the secondary filtering channel 134, passes through the secondary filtering of the third filter material 80, and finally flows to the first water outlet from the water outlet channel 133. The housing 10 is further provided with a second water inlet and a second water outlet, which are communicated with the second filtering cavity 140, and the second filtering material 40 is located in the second filtering cavity 140 and between the second water inlet and the second water outlet, so that the water to be purified enters the second filtering cavity 140 from the second water inlet, is filtered by the second filtering material 40, and then flows out through the second water outlet.

The positions of the first water inlet, the first water outlet, the second water inlet and the second water outlet on the housing 10 may be determined according to the internal structures of the first filter chamber 130 and the second filter chamber 140, and may be respectively disposed at any position on the housing 10. Of course, the first water inlet, the first water outlet, the second water inlet and the second water outlet are preferably centrally arranged at one end of the shell 10, so as to facilitate water path connection and avoid that the water path connection pipeline in the water purifying equipment is too complicated.

In the above embodiment, for the first filter chamber 130, the first filter 30 is disposed in the water inlet channel 131, and the purified water filtered by the first filter 30 first needs to be converged by the converging channel 132, then can flow to the water outlet channel 133, and finally is discharged from the first water outlet. Owing to be provided with the passageway 132 that converges, this passageway 132 that converges can continue to catchment and converge through the purified water of first filter media 30, in this process, rivers can concentrate in the passageway 132 that converges, make the interior water pressure of passageway 132 that converges rise, and then make the velocity of flow when having slowed down rivers through first filter media 30, make treat that purified water can pass through from each position of first filter media 30 uniformly, even make each position homoenergetic of first filter media 30 realize the filter effect of preferred, and then promote the bulk utilization ratio of first filter media 30, in order to avoid first filter media 30 because the local heavy whole life who leads to first filter media 30 of consumption reduces the risk, can show the filter effect who improves first filter media 30, the normal working life of first filter media 30 has also been ensured simultaneously.

In addition, because the first filter chamber 130 still has secondary filter channel 134, and then makes the purified water that filters through first filter media 30 still can realize the secondary through third filter media 80 and filter, can further promote the play water quality of first delivery port for composite filter element 1's water purification effect obtains showing and promotes.

In order to further improve the overall utilization rate of the first filter 30, so that the water to be purified can more uniformly pass through the first filter 30, in this embodiment, for the first filter 30, the first filter 30 has two opposite ends, the first water inlet is disposed near one end of the first filter 30, and the water inlet of the collecting channel 132 is disposed near the other end of the first filter 30. Since the first water inlet and the water inlet of the converging channel 132 are respectively located at two sides of the first filter material 30, when water flows from the first water inlet to the water inlet of the converging channel 132, the water can more uniformly pass through the first filter material 30, thereby avoiding the defect of over short local service life of the first filter material 30 and greatly improving the overall utilization rate of the first filter material 30.

Further, in the present embodiment, the above-mentioned insulation assembly 20 includes a middle barrel 210, a confluence barrel 220, and an inner barrel 230, wherein: the middle barrel 210 is arranged in the shell 10, and the lower end of the middle barrel 210 is provided with a water passing port 211; the confluence barrel 220 is positioned in the shell 10 and sleeved at the lower end of the middle barrel 210, a confluence channel 132 is formed in the confluence barrel 220, and the confluence channel 132 is communicated with the water passing port 211; the inner barrel 230 is positioned in the middle barrel 210, the second filtering cavity 140 is formed inside the inner barrel 230, and the secondary filtering channel 134 is formed between the lower end surface of the inner barrel 230 and the lower end surface of the middle barrel 210 at intervals; the inner side of the shell 10 and the outer side of the middle barrel 210 form a water inlet channel 131 at intervals, and the confluence barrel 220 is positioned below the water inlet channel 131; the water outlet channel 133 is formed between the outer side of the inner barrel 230 and the inner side of the middle barrel 210 at intervals; the upstream of the secondary filtering passage 134 is connected to the water outlet 211, and the downstream of the secondary filtering passage 134 is connected to the water outlet passage 133.

It can be understood that the upper end of the confluence barrel 220 is open, the confluence barrel 220 is sleeved at the lower end of the middle barrel 210, the confluence barrel 220 and the middle barrel 210 are arranged in the shell 10 together, the inner barrel 230 is arranged in the middle barrel 210, a water inlet channel 131 arranged vertically is formed between the inner circumferential surface of the shell 10 and the outer circumferential surface of the middle barrel 210, a water outlet channel 133 arranged vertically is formed between the outer side surface of the inner barrel 230 and the inner side surface of the middle barrel 210, a secondary filtering channel 134 is formed between the lower end of the inner barrel 230 and the lower end of the middle barrel 210 at an interval, and a confluence channel 132 is formed in the confluence barrel 220. The confluence passage 132 is communicated with the lower end of the water inlet passage 131; the bottom of the middle barrel 210 is communicated with the confluence channel 132 in the confluence barrel 220 through a water passing hole 211 arranged on the lower end surface of the middle barrel, namely, the secondary filtering channel 134 is communicated with the confluence channel 132 and the water outlet channel 133.

In this embodiment, first water inlet and first delivery port all are located the upper end of casing 10, treat that purified water gets into inhalant canal 131 from first water inlet, the purified water after the prefiltering of first filter media 30 receives rivers pressure and the influence of self gravity and downward flow, purified water is concentrated from converging flow channel 132, converge, then purified water gets into secondary filter channel 134 through converging flow channel 132 again, then after the secondary filter of third filter media 80, again by the first delivery port of the upward flow of exhalant canal 133, realize the filtering process of rivers in first filter chamber 130.

Further, referring to fig. 2 and 3 in combination with fig. 5, 6 and 11, in an embodiment, the bus duct 220 preferably has the following structure:

the confluence barrel 220 comprises a barrel body 221 and a confluence rib 222, wherein the upper end of the barrel body 221 is open; the bus bars 222 are arranged on the inner circumferential surface of the barrel body 221 along the axial direction of the barrel body 221, a plurality of bus bars 222 are arranged at intervals along the circumferential direction of the barrel body 221, and a bus groove 223 is formed between every two adjacent bus bars 222; the outer surface of the middle barrel 210 is abutted against the bus bar 222, a bus gap 224 is formed between the lower end surface of the middle barrel 210 and the lower end surface of the barrel body 221 at intervals, the bus gap 224 is communicated with the water passing port 211, and the lower end of the bus groove 223 is communicated with the bus gap 224 to form the bus passage 132; the upper end of the confluence groove 223 communicates with the water inlet passage 131 to form a water inlet of the confluence passage 132.

When the confluence barrel 220 is sleeved at the lower end of the middle barrel 210, the confluence ribs 222 are abutted against the outer surface of the middle barrel 210, and a confluence groove 223 is formed between two adjacent confluence ribs 222; the confluence rib 222 can also extend towards the water passing port 211 on the lower end surface of the barrel body 221, so that the formed confluence groove 223 can be directly communicated with the water passing port 211; or the confluence rib 222 is only arranged on the inner circumferential surface of the barrel body 221, and a confluence gap 224 is formed between the lower end surface of the middle barrel 210 and the lower end surface of the barrel body 221 at intervals, and the confluence groove 223 is communicated with the water passing hole 211 through the confluence gap 224. In the present embodiment, the bus bar gap 224 and the bus bar groove 223 are preferably communicated with each other, and the bus bar passage 132 is further preferably formed.

It should be noted that the water inlet channel 131 is formed on the upper side of the confluence barrel 220, and the upper end of the confluence groove 223 can be communicated with the water inlet channel 131, that is, the upper end of the confluence groove 223 is the water inlet of the confluence channel 132.

In order to ensure that the collecting barrel 220 has better collecting and water collecting effects, in the embodiment, the lower end surface of the barrel body 221 extends downwards to form a first interface 225, the first interface 225 is communicated with the collecting gap 224, and a certain collecting and collecting space is formed at the lower side of the barrel body 221 by arranging the first interface 225, so that the water flow can be conveniently collected. The lower end surface of the middle barrel 210 is downwardly extended with a second interface 212 along the water outlet 211, the second interface 212 is positioned in the first interface 225, the radial dimension of the second interface 212 is smaller than that of the first interface 225, and the second interface 212 is communicated with the first interface 225, so that the water flow can flow to the secondary filtering channel 134 in the middle barrel 210 through the second interface 212.

The structure of the secondary filter passage 134 of the present embodiment will be specifically described below:

the secondary filtering channel 134 is formed between the lower end of the inner tub 230 and the lower end of the middle tub 210, the upstream of the secondary filtering channel 134 is communicated with the water passing port 211 at the lower end of the middle tub 210, and the downstream of the secondary filtering channel 134 is communicated with the water outlet channel 133 in the middle tub 210.

Referring to fig. 2-11, in a preferred embodiment:

preferably, the third filter 80 is disposed in a cylindrical shape, an upper end surface of the third filter 80 is in sealing contact with a lower end surface of the inner barrel 230, and a lower end surface of the third filter 80 is in sealing contact with a lower end surface of the middle barrel 210, so that two sides of the inner side of the third filter 80 are isolated from each other, an inner space of the third filter 80 is communicated with the water passing port 211, and an outer space of the third filter 80 is communicated with the water outlet channel 133.

It can be understood that the water in the confluence channel 132 flows into the inner space of the third filter 80 through the water passing opening 211, and after being filtered by the third filter 80, the water flows to the first water outlet from the outer space of the third filter 80 through the water outlet channel 133.

Further, since the inner barrel 230 and the lower end of the middle barrel 210 are spaced apart from each other, in order to effectively support the inner barrel 230, the lower end surface of the inner barrel 230 has an annular flange 231 extending downward along the circumferential direction thereof, the third filter 80 is located inside the annular flange 231, and a gap is formed between the outer circumferential surface of the third filter 80 and the inner circumferential surface of the annular flange 231; the lower end surface of the middle barrel 210 is provided with an abutting rib 214 in an upward protruding manner, the abutting rib 214 abuts against the annular flange 231, so that a water passing gap 215 is defined between the annular flange 231 and the bottom end of the middle barrel 210, and the water passing gap 215 is used for communicating the inner side and the outer side of the annular flange 231.

The annular flange 231 is abutted against the lower end of the middle barrel 210, so that the inner barrel 230 is supported by the middle barrel 210, and risks of falling of the inner barrel 230 or crushing of the third filter material 80 by the inner barrel 230 and the like can be effectively avoided. In order to prevent the annular flange 231 from obstructing the water flow in the secondary filtering channel 134, the abutting ribs 214 are convexly arranged on the lower end surface of the middle barrel 210, so that the annular flange 231 is connected with the abutting ribs 214, a water passing gap 215 can be formed between the annular flange 231 and the lower end surface of the middle barrel 210, and the water flow in the external space of the third filtering material 80 is ensured to be smooth, so that the purified water filtered by the third filtering material 80 flows to the water outlet channel 133.

Further, in order to facilitate installation of the third filter 80, the composite filter element 1 further includes a first end cap 80a and a second end cap 80b, the first end cap 80a is located between an upper end surface of the third filter 80 and a lower end surface of the inner barrel 230, and the first end cap 80a is in sealing contact with the upper end surface of the third filter 80; the second end cap 80b is arranged between the lower end face of the third filter material 80 and the lower end face of the middle barrel 210, the second end cap 80b is abutted against the lower end face of the third filter material 80, the second end cap 80b is provided with a first opening 802 corresponding to the water passing opening 211, and the first opening 802 is communicated with the water passing opening 211 and the inner space of the third filter material 80. Therefore, the third filter material 80 can be prevented from being directly installed in contact with the middle barrel 210 and the inner barrel 230, so that the manufacturing precision of the middle barrel 210 and the inner barrel 230 can be reduced.

In order to prevent the third filter 80 from radially deviating from the first and second end caps 80a and 80b, a third stopper flange 801 is extended downward from the first end cap 80a, and the third stopper flange 801 is in contact with an inner circumferential surface and/or an outer circumferential surface of an upper end of the third filter 80 to restrict the movement of the third filter 80 with respect to the first end cap 80 a; similarly, the second end cap 80b extends upward to form a fourth limiting flange 804, which is annularly disposed, and the fourth limiting flange 804 can abut against the inner circumferential surface and/or the outer circumferential surface of the lower end of the third filter material 80, so as to limit the movement of the third filter material 80 relative to the second end cap 80 b.

In order to facilitate the communication between the inner space of the third filter 80 and the collecting channel 132, in this embodiment, the second end cap 80b has a first flow guiding port 803 extending downward along the edge of the first opening 802, and the first flow guiding port 803 penetrates through the water gap 211 in a sealing manner, so that the first flow guiding port 803 communicates with the inner space of the collecting channel 132 and the inner space of the third filter 80, thereby preventing the water from leaking between the first opening 802 and the water gap 211, and preventing the risk that the water in the collecting channel 132 can directly flow to the water outlet channel 133 without being filtered by the third filter 80.

In the present embodiment, the third filter medium 80 is provided in a roll shape, and the third filter medium 80 may be a PAC roll paper filter, a PP cotton filter, a carbon rod, a carbon fiber composite filter, or the like.

Referring to fig. 12-15, in another preferred embodiment:

the third filter material 80 is preferably a granular filter material, in order to facilitate the arrangement of the third filter material 80, the composite filter element 1 further comprises a filter barrel 90 arranged between the inner barrel 230 and the middle barrel 210, the third filter material 80 is filled in the filter barrel 90, a second drainage port 910 extends towards the lower end of the filter barrel 90, and the second drainage port 910 penetrates through the water gap 211 in a sealing manner so as to communicate the confluence channel 132 with the inside of the filter barrel 90; the outer peripheral surface of the filtering barrel 90 is provided with a second opening 920 near the upper end thereof, and the second opening 920 is communicated with the water outlet channel 133 and the inside of the filtering barrel 90.

By arranging the filter barrel 90, the third filter material 80 in a granular shape can be filled in the filter barrel 90, the lower end of the filter barrel 90 is provided with a second drainage interface 910, and water in the confluence channel 132 is introduced into the filter barrel 90, so that the third filter material 80 filters water flow; the upper end of the filter barrel 90 is provided with a second opening 920, so that the water filtered by the third filter material 80 in the filter barrel 90 can be conveniently guided out of the filter barrel 90 and finally flows to the first water outlet through the water outlet channel 133.

It can be understood that, since the lower end of the inner barrel 230 and the lower end of the middle barrel 210 have a certain interval, the filter barrel 90 can be installed between the inner barrel 230 and the middle barrel 210, wherein the upper end surface of the filter barrel 90 preferably abuts against the lower end surface of the inner barrel 230, and thus the inner barrel 230 can be supported together, so as to prevent the inner barrel 230 from falling down, and improve the structural stability of the composite filter element 1. In order to prevent the second opening 920 of the filter barrel 90 from being covered and blocked by the lower end surface of the inner barrel 230, the second opening 920 of the filter barrel 90 is preferably disposed on the outer circumferential surface of the filter barrel 90, and a gap is formed between the outer circumferential surface of the filter barrel 90 and the inner circumferential surface of the middle barrel 210, so that the second opening 920 is communicated with the water outlet channel 133.

Further, in order to prevent the inner tub 230 from being too heavy and crushing the lauter tub 90, in the present embodiment, the lower end of the inner tub 230 has an annular flange 231 extending downward along the circumferential direction thereof, and the annular flange 231 abuts against the lower end surface of the middle tub 210 to support the inner tub 230. Wherein, the filter vat 90 is located inside the annular flange 231, and a gap is provided between the outer circumferential surface of the filter vat 90 and the inner circumferential surface of the annular flange 231; the lower end surface of the middle barrel 210 is provided with an abutting rib 214 in an upward protruding manner, the abutting rib 214 abuts against the annular flange 231, so that a water passing gap 215 is defined between the annular flange 231 and the bottom end of the middle barrel 210, and the water passing gap 215 is used for communicating the inner side and the outer side of the annular flange 231. In order to prevent the annular flange 231 from obstructing the water flow in the secondary filtering channel 134, the abutting ribs 214 are convexly arranged on the lower end surface of the middle barrel 210, so that the annular flange 231 is connected with the abutting ribs 214, a water passing gap 215 can be formed between the annular flange 231 and the lower end surface of the middle barrel 210, and the water flow outside the filtering barrel 90 is ensured to be smooth, so that the purified water filtered by the third filtering material 80 flows to the water outlet channel 133.

In the present embodiment, the third filter medium 80 is preferably an activated carbon particle filter medium.

Further, in the above embodiment, the housing 10 may specifically include an outer tub 110 and a filter element joint 120; wherein: the upper end of the outer tub 110 is open, and the middle tub 210 and the confluence tub 220 are both arranged in the outer tub 110; the filter element joint 120 is hermetically sealed at the upper end of the outer tub 110, and the filter element joint 120 is provided with a first water inlet, a first water outlet, a second water inlet and a second water outlet.

The filter element joint 120 can be detachably connected to the upper end of the outer barrel 110 in a sealing manner, so as to realize the detachment of the filter element, and facilitate the subsequent replacement of the first filter element 30 and the second filter element 40. Because the filter element joint 120 is provided with the first water inlet, the first water outlet, the second water inlet and the second water outlet, the waterway of the composite filter element 1 is more conveniently connected at the moment, and great inconvenience caused by the complicated arrangement of a connecting waterway packing in water purifying equipment is avoided.

In the embodiment, since the water inlet channel 131 is formed between the middle barrel 210 and the outer barrel 110, the water inlet channel 131 is annularly arranged, so as to facilitate placing the first filter material 30, the first filter material 30 is cylindrically arranged and sleeved outside the middle barrel 210, and a gap is formed between the inner circumferential surface of the first filter material 30 and the outer circumferential surface of the middle barrel 210; the inner space of the first filter 30 communicates with the collecting channel 132, and the outer space of the first filter 30 communicates with the first water inlet, so that the water to be purified, which enters from the first water inlet, can be concentrated and collected through the collecting channel 132 after permeating from the outer circumferential surface of the first filter 30 into the first filter 30.

In order to facilitate the installation of the first filter material 30, in the present embodiment, the upper portion of the middle barrel 210 has an annular water baffle 213 extending outwards along the circumferential direction thereof, and a gap is formed between the annular water baffle 213 and the inner circumferential surface of the outer barrel 110; the first filter material 30 is located between the annular water baffle 213 and the collecting barrel 220, and the upper end surface of the first filter material 30 is in sealing contact with the annular water baffle, and the lower end surface of the first filter material 30 is in sealing contact with the upper end of the collecting barrel 220. It is understood that the collecting groove 223 of the collecting barrel 220 is located inside the first filter 30, so as to communicate the inner space of the first filter 30 with the collecting channel 132. In addition, because the upper and lower ends of the first filter material 30 are limited by the annular water baffle 213 and the collecting barrel 220, the first filter material 30 is firmly clamped between the annular water baffle 213 and the collecting barrel 220, and further the first filter material 30 is prevented from shaking in the water inlet channel 131, so that the structure of the composite filter element 1 is more stable.

In this embodiment, the upper end of the outer tub 110 is connected to the filter element connector 120, the upper end of the middle tub 210 is connected to the filter element connector 120, and the upper end of the inner tub 230 is also connected to the filter element connector 120, so that the upper end of the water inlet channel 131 is connected to the first water inlet of the filter element connector 120, and the upper end of the water outlet channel 133 is connected to the first water outlet of the filter element connector 120. In order to prevent the annular water baffle 213 of the middle barrel 210 from blocking the water inlet channel 131, a certain gap is reserved between the annular water baffle 213 and the inner circumferential surface of the outer barrel 110, so that the water can flow down along the water inlet channel 131 conveniently.

The first filter medium 30 is provided in a tubular shape, and the first filter medium 30 may be a PAC roll paper filter medium, a PP cotton filter medium, a carbon rod, or a carbon fiber composite filter medium. It is understood that, in order to enhance the purifying effect of the first filter medium 30, the first filter medium 30 may be formed by laminating a plurality of core materials, for example: the first filter material 30 includes a first sub filter material 310 and a second sub filter material 320 which are sequentially arranged along the radial direction inward, and the first sub filter material 310 and the second sub filter material 320 may be a PAC roll filter material, a PP cotton filter material, a carbon rod or a carbon fiber composite filter material; the first sub-filter material 310 and the second sub-filter material 320 have different filter material types, so that the water to be purified can be filtered by various filter materials, and the quality of the purified water is improved.

Further, when the first filter medium 30 is a roll filter medium such as PAC roll filter medium or PP cotton, in order to facilitate the installation of the first filter medium 30, a support frame 50 is further fitted between the first filter medium 30 and the middle barrel 210, a gap is provided between the support frame 50 and the outer circumferential surface of the middle barrel 210, and the support frame 50 is provided with a plurality of water passage ports 501; the first filter material 30 is sleeved outside the supporting barrel frame 50, or the first filter material 30 is wound outside the supporting barrel frame 50. In this way, the support frame 50 can support the first filter material 30, and prevent the inner circumferential surface of the first filter material 30 from being attached to the outer circumferential surface of the middle barrel 210. In addition, because the supporting barrel frame 50 is provided with the water through hole 501, the purified water filtered by the first filter material 30 can rapidly flow downwards into the confluence barrel 220 along the inside of the supporting barrel frame 50, and the smooth water flow in the water inlet channel 131 can be ensured.

When the first filter medium 30 has a structure in which the first sub filter medium 310 and the second sub filter medium 320 are stacked, the second sub filter medium 320 is preferably a roll filter medium such as PAC roll filter medium or PP cotton, and the type of filter medium of the first sub filter medium 310 is not limited, and the support frame 50 supports the second sub filter medium 320.

The filtering principle of the second filtering cavity 140 of the composite filtering core 1 is explained as follows:

in the present embodiment, referring to fig. 10 in combination with fig. 2, 3, 11, 12, 13 and 15, the second filter 40 is disposed in a cylindrical shape, the second filter 40 is located in the inner barrel 230, an inner space of the second filter 40 communicates with the second water outlet, and an outer space of the second filter 40 communicates with the second water inlet.

The composite filter element 1 further comprises an upper end cover 60 and a lower end cover 70, wherein the upper end cover 60 is in sealing butt joint with the upper end face of the second filter material 40, and the lower end cover 70 is in sealing butt joint with the lower end face of the second filter material 40, so that the two sides of the inner side of the second filter material 40 are isolated from each other by arranging the upper end cover 60 and the lower end cover 70, the outer peripheral surface of the second filter material 40 and the inner peripheral surface of the inner barrel 230 are arranged at intervals, the upper end of the inner barrel 230 is connected with the filter element joint 120, and the outer space of the second filter material 40 is communicated with a second; the upper end cap 60 extends upward to form a filter element interface 620 communicated with the inner space of the second filter material 40, and the filter element interface 620 is connected with the filter element joint 120, so that the inner space of the second filter material 40 is communicated with the second water outlet.

In order to prevent the second filter material 40 from radially deviating from the upper end cap 60 and the lower end cap 70, in this embodiment, the upper end cap 60 extends downward to form a first limit flange 610, which is annularly arranged, and the first limit flange 610 can abut against the inner circumferential surface and/or the outer circumferential surface of the upper end of the second filter material 40, so as to limit the movement of the second filter material 40 relative to the upper end cap 60; similarly, the lower end cap 70 extends upward to form a second limit flange 710, and the second limit flange 710 can abut against the inner circumferential surface and/or the outer circumferential surface of the lower end of the second filter 40, so as to limit the movement of the second filter 40 relative to the lower end cap 70.

The type of the second filter 40 is not limited, and for example, the second filter 40 may be a carbon rod, so as to eliminate the odor in the water.

In addition, for the composite filter element 1, the first filter 30 and the third filter 80 may be pre-filters, and the second filter 40 may be post-filters, wherein: the first filter 30 is preferably PP cotton or PAC coil, the third filter 80 is preferably PP cotton or PAC coil, and the second filter 40 is preferably carbon rod.

The invention further provides a water purification device, which comprises the composite filter element, the specific structure of the composite filter element refers to the above embodiments, and the water purification device adopts all the technical schemes of all the above embodiments, so that the water purification device at least has all the beneficial effects brought by the technical schemes of the above embodiments, and the details are not repeated.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.