CN209733558U - Composite filter element structure and water purifier - Google Patents

Composite filter element structure and water purifier Download PDF

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Publication number
CN209733558U
CN209733558U CN201920075283.4U CN201920075283U CN209733558U CN 209733558 U CN209733558 U CN 209733558U CN 201920075283 U CN201920075283 U CN 201920075283U CN 209733558 U CN209733558 U CN 209733558U
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China
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filter element
water
reverse osmosis
osmosis membrane
shell
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CN201920075283.4U
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Chinese (zh)
Inventor
任富佳
刘建保
何军
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Hangzhou Robam Appliances Co Ltd
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Hangzhou Robam Appliances Co Ltd
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Priority to CN201920075283.4U priority Critical patent/CN209733558U/en
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Abstract

The utility model provides a composite filter element structure and purifier relates to water purification unit's technical field, and this composite filter element structure includes shell and filter core unit, and the filter core unit includes reverse osmosis membrane filter element group spare, leading filter element group spare and interior barrel. The one end that the shell is close to reverse osmosis membrane filter element group spare and goes out the water side has set firmly the water route crossover sub, is provided with first water clearance of crossing between the inner wall of shell and the outer wall of leading filter element group spare, is provided with the second between the inner wall of leading filter element group spare and the outer wall of interior barrel and crosses the water clearance, is provided with the third between the inner wall of interior barrel and the outer wall of reverse osmosis membrane filter element group spare and crosses the water clearance. The waterway conversion piece is provided with a raw water inlet flow passage, a purified water outlet flow passage, a pressurized water inlet flow passage, a concentrated water outlet flow passage and a purified water outlet flow passage. The composite filter element structure and the water purifier solve the problems that an existing water purifier uses 4-5 filter elements, is large in size, occupies kitchen space in a user home, and influences use experience of the user.

Description

Composite filter element structure and water purifier
Technical Field
The utility model belongs to the technical field of the water purification unit technique and specifically relates to a composite filter element structure and purifier are related to.
Background
Along with the increasing attention of people to drinking water safety, the water purification industry develops at a high speed; as is well known, reverse osmosis water purifiers are the mainstream domestic water purifiers. In the prior art, in order to ensure the service life of a reverse osmosis membrane filter element in a reverse osmosis water purifier, 2-3 front filter elements are usually arranged at the front end of the reverse osmosis membrane filter element so as to realize effective interception of foreign matters, protect the reverse osmosis membrane filter element, prolong the service life of the reverse osmosis membrane filter element and save the cost of the water purifier.
However, the water purifier is large in size due to the fact that 4-5 filter elements are used, the space under a kitchen of a user home is smaller and smaller, the space for installing the water purifier is smaller and smaller, the water purifier is large in size, the kitchen space is occupied, and the use experience of the user is influenced.
SUMMERY OF THE UTILITY MODEL
A first object of the utility model is to provide a composite filter element structure to alleviate the purifier that exists among the prior art and use 4-5 filter cores, it is great, occupy the kitchen space in user's family, influence the technical problem that user's use was experienced.
the utility model provides a composite filter element structure, which comprises a shell and a filter element unit fixedly arranged in the shell, wherein the filter element unit comprises a reverse osmosis membrane filter element assembly and a front filter element assembly sleeved at the periphery of the reverse osmosis membrane filter element assembly, and an inner cylinder body separates the front filter element assembly from the reverse osmosis membrane filter element assembly;
A water path conversion piece is fixedly arranged at one end of the shell, which is close to the water outlet side of the reverse osmosis membrane filter element assembly, a first water passing gap is formed between the inner wall of the shell and the outer wall of the front filter element assembly, a second water passing gap is formed between the inner wall of the front filter element assembly and the outer wall of the inner cylinder, and a third water passing gap is formed between the inner wall of the inner cylinder and the outer wall of the reverse osmosis membrane filter element assembly; the water channel conversion piece is provided with a raw water inlet channel communicated with the first water passing gap, a purified water outlet channel communicated with the second water passing gap, a pressurized water inlet channel communicated with the third water passing gap, a concentrated water outlet channel communicated with a concentrated water outlet of the reverse osmosis membrane filter element assembly and a purified water outlet channel communicated with a purified water outlet of the reverse osmosis membrane filter element assembly.
Furthermore, leading filter element group spare includes carbon fiber filter core and the PP filter core that outside-in set gradually, perhaps includes first PP filter core, carbon fiber filter core and the second PP filter core that outside-in set gradually, perhaps includes first PP filter core, first carbon-point filter core and the second PP filter core that outside-in set gradually.
Furthermore, the reverse osmosis membrane filter element assembly comprises a central tube, a reverse osmosis membrane coated on the central tube and a reverse osmosis membrane end seal fixedly arranged at one end of the reverse osmosis membrane close to the water path conversion piece, the reverse osmosis membrane end seal is sealed and fixedly connected with the water path conversion piece, and the reverse osmosis membrane end seal is communicated with the concentrated water outlet flow channel;
The central pipe is communicated with the pure water outlet flow passage.
Further, include with the coaxial rearmounted filter element group spare that sets up of reverse osmosis membrane filter core, the end of intaking of rearmounted filter element group spare with the center tube intercommunication, the play water end of rearmounted filter element group spare with pure water goes out the water flow way intercommunication, the outer wall of rearmounted filter element group spare with reverse osmosis membrane seals and is provided with the fourth and cross the water clearance, the fourth cross the water clearance with dense water goes out the water flow way intercommunication.
Furthermore, the post-filter element assembly comprises a second carbon rod filter element or a carbon fiber filter element or a granular activated carbon filter element.
Furthermore, the rear filter element assembly comprises a carbon rod cylinder, a second carbon rod filter element arranged in the carbon rod cylinder, a first filter element end cover fixedly sleeved at one end, close to the central tube, of the second carbon rod filter element and a second filter element end cover fixedly sleeved at one end, far away from the central tube, of the second carbon rod filter element, and a fifth water flowing channel is arranged between the inner wall of the carbon rod cylinder and the outer wall of the second carbon rod filter element; one end of the second filter element end cover is hermetically and fixedly connected with the carbon rod cylinder, and the other end of the second filter element end cover is hermetically and fixedly connected with the water path conversion piece; and the water outlet of the second filter element end cover is communicated with the pure water outlet flow channel.
Furthermore, an end seal of the inner cylinder body is fixedly arranged at one end, close to the water path conversion piece, of the inner cylinder body, the end seal of the inner cylinder body is fixedly connected with the water path conversion piece, and the end seal of the inner cylinder body is communicated with the pressurized water inlet flow channel.
The third filter element end cover is positioned at one end of the shell far away from the water channel conversion piece, is hermetically and fixedly connected with the outer wall of the front filter element and the inner cylinder, and is fixedly connected with one end of the reverse osmosis membrane filter element assembly; the fourth filter element end cover is located the shell is close to the one end of water route conversion part, one end with the outer wall of leading filter element group spare is sealed and fixed connection, the other end with the water route conversion part is sealed and fixed connection, just fourth filter element end cover with the water purification goes out the water flow way intercommunication.
Furthermore, the shell comprises a first shell and a second shell fixedly connected with the first shell, and the first shell and the second shell jointly enclose an accommodating cavity for accommodating the filter element unit; the waterway conversion piece is fixedly arranged at one end of the second shell, which is far away from the first shell, and defines the raw water inlet channel together with the second shell.
The utility model provides a beneficial effect that composite filter element structure compares with prior art does:
The utility model provides a composite filter element structure includes shell and filter element unit, the filter element unit includes reverse osmosis membrane filter element group spare and the leading filter element group spare of reverse osmosis membrane filter element group spare periphery is located to the cover, on the one hand, the periphery of reverse osmosis membrane filter element group spare is located to leading filter element group spare cover, integrate leading filter element group spare and reverse osmosis membrane filter element group spare in same shell, make this composite filter element structure when not influencing function and flux, the volume is showing and is reducing, more practice thrift the space, can show that to improve the purifier volume great, occupy the problem of user's in-home kitchen space, also be favorable to improving user's use experience, reduce filter element cost; on the other hand, the existing reverse osmosis membrane filter element water purifier is mostly provided with 4 or 5 filter elements, and the replacement period of each filter element is different, so that the frequency of replacing the filter elements of the water purifier is higher, and workers need to charge the cost for replacing the filter elements at home, which leads to higher use cost of users; and the utility model provides a composite filter element structure makes the complete machine only have a filter core structure, and the frequency of renew cartridge is showing and is reducing, is favorable to practicing thrift the use cost of purifier.
the one end that the shell is close to reverse osmosis membrane filter element group spare and goes out the water side has set firmly the water route crossover sub, is provided with first water clearance of crossing between the inner wall of shell and the outer wall of leading filter element group spare, is provided with the second between the inner wall of leading filter element group spare and the outer wall of interior barrel and crosses the water clearance, is provided with the third between the inner wall of interior barrel and the outer wall of reverse osmosis membrane filter element group spare and crosses the water clearance. The water channel conversion piece is provided with a raw water inlet channel communicated with the first water passing gap, a purified water outlet channel communicated with the second water passing gap, a pressurized water inlet channel communicated with the third water passing gap, a concentrated water outlet channel communicated with a concentrated water outlet of the reverse osmosis membrane filter element assembly and a purified water outlet channel communicated with a purified water outlet of the reverse osmosis membrane filter element assembly. Make the high integration of two into three play of composite filter core structure through the water route converting part, the one way is gone out water for the installation of composite filter core structure in the purifier is more convenient.
A second object of the utility model is to provide a water purifier to alleviate the water purifier that exists among the prior art and use 4-5 filter cores, it is great, occupy the kitchen space in the user's family, influence the technical problem that user's use was experienced.
the utility model provides a purifier includes above-mentioned composite filter element structure, can reach the beneficial effect that above-mentioned composite filter element structure can reach at least, and here is repeated description no longer.
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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
fig. 1 is a cross-sectional view of a composite filter element structure provided in an embodiment of the present invention;
Fig. 2 is a cross-sectional view of another angle of the composite filter element structure provided in the embodiment of the present invention;
Fig. 3 is a schematic structural view of a water channel switching piece in the composite filter element structure according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of the waterway switch member shown in FIG. 3;
FIG. 5 is a cross-sectional view of the waterway switch member shown in FIG. 3 at another angle;
Fig. 6 is a schematic structural view of a part of a housing in the composite filter element structure according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view of the housing shown in FIG. 6;
Fig. 8 is an exploded view of a partial structure in a composite filter element structure according to an embodiment of the present invention.
Icon: 1-a housing; 11-a first housing; 12-a second housing; 2-a filter element unit; 21-a reverse osmosis membrane filter element assembly; 211-a central tube; 212-a reverse osmosis membrane; 213-sealing the reverse osmosis membrane end; 22-prefilter assembly; 221-a first PP cartridge; 222-a first carbon rod cartridge; 223-a second PP filter element; 3-inner cylinder; 4-a waterway conversion piece; 41-raw water inlet channel; 42-a purified water outlet runner; 43-pressurized water inlet channel; 44-a concentrated water outlet flow channel; 45-pure water outlet flow channel; 5-post filter element component; 51-a carbon rod cylinder; 52-a second carbon rod filter element; 53-first cartridge end cap; 54-a second cartridge end cap; 6-sealing the end of the inner cylinder body; 7-a third cartridge end cap; 8-a fourth cartridge end cap; 9-middle joint.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
as shown in fig. 1 and fig. 2, the composite filter element structure provided by this embodiment includes a housing 1 and a filter element unit 2 fixedly disposed in the housing 1, the filter element unit 2 includes a reverse osmosis membrane filter element assembly 21 and a front filter element assembly 22 sleeved on the periphery of the reverse osmosis membrane filter element assembly 21, and the inner cylinder 3 separates the front filter element assembly 22 and the reverse osmosis membrane filter element assembly 21.
the one end that shell 1 is close to reverse osmosis membrane filter element group spare 21 play water side has set firmly water route crossover sub 4, is provided with first water clearance of crossing between the inner wall of shell 1 and the outer wall of leading filter element group spare 22, is provided with the second between the inner wall of leading filter element group spare 22 and the outer wall of interior barrel 3 and crosses the water clearance, is provided with the third between the inner wall of interior barrel 3 and the outer wall of reverse osmosis membrane filter element group spare 21 and crosses the water clearance. The waterway conversion member 4 is provided with a raw water inlet channel 41 communicated with the first water passing gap, a purified water outlet channel 42 communicated with the second water passing gap, a pressurized water inlet channel 43 communicated with the third water passing gap, a concentrated water outlet channel 44 communicated with the concentrated water outlet of the reverse osmosis membrane filter element assembly 21, and a pure water outlet channel 45 communicated with the pure water outlet of the reverse osmosis membrane filter element assembly 21, as shown in fig. 1 to 5.
The composite filter element structure provided by the embodiment comprises a shell 1 and a filter element unit 2, wherein the filter element unit 2 comprises a reverse osmosis membrane filter element assembly 21 and a front filter element assembly 22 sleeved on the periphery of the reverse osmosis membrane filter element assembly 21, on one hand, the front filter element assembly 22 is sleeved on the periphery of the reverse osmosis membrane filter element assembly 21, and the front filter element assembly 22 and the reverse osmosis membrane filter element assembly 21 are integrated in the same shell 1, so that the composite filter element structure has the advantages that the size is remarkably reduced, the space is saved, the problem that the water purifier has a large size and occupies the kitchen space in the home of a user is remarkably solved, the use experience of the user is improved, and the filter element cost is reduced; on the other hand, the existing reverse osmosis membrane 212 filter element water purifier is mostly provided with 4 or 5 filter elements, and the replacement period of each filter element is different, so that the frequency of replacing the filter elements of the water purifier is higher, and workers need to charge the cost for replacing the filter elements at home, which leads to higher use cost of users; and the composite filter element structure that this embodiment provided makes the complete machine only have a filter element structure, and the frequency of renew cartridge is showing and is reducing, is favorable to practicing thrift the use cost of purifier.
The one end that shell 1 is close to reverse osmosis membrane filter element group spare 21 play water side has set firmly water route crossover sub 4, is provided with first water clearance of crossing between the inner wall of shell 1 and the outer wall of leading filter element group spare 22, is provided with the second between the inner wall of leading filter element group spare 22 and the outer wall of interior barrel 3 and crosses the water clearance, is provided with the third between the inner wall of interior barrel 3 and the outer wall of reverse osmosis membrane filter element group spare 21 and crosses the water clearance. The waterway conversion member 4 is provided with a raw water inlet channel 41 communicated with the first water passing gap, a purified water outlet channel 42 communicated with the second water passing gap, a pressurized water inlet channel 43 communicated with the third water passing gap, a concentrated water outlet channel 44 communicated with the concentrated water outlet of the reverse osmosis membrane filter element assembly 21, and a purified water outlet channel 45 communicated with the purified water outlet of the reverse osmosis membrane filter element assembly 21. Make the high integration of two into three play of composite filter core structure through water route converting part 4, the one-way goes out water for the installation of composite filter core structure in the purifier is more convenient.
in an optional technical solution of this embodiment, the front filter element assembly 22 includes a carbon fiber filter element and a PP filter element that are sequentially disposed from outside to inside, or includes a first PP filter element 221, a carbon fiber filter element and a second PP filter element 223 that are sequentially disposed from outside to inside, or includes a first PP filter element 221, a first carbon rod filter element 222 and a second PP filter element 223 that are sequentially disposed from outside to inside.
In the optional technical solution of this embodiment, the reverse osmosis membrane filter element assembly 21 includes a central tube 211, a reverse osmosis membrane 212 wrapped on the central tube 211, and a reverse osmosis membrane end seal 213 fixedly disposed at one end of the reverse osmosis membrane 212 close to the water path switching element 4, wherein the reverse osmosis membrane end seal 213 is sealed and fixedly connected with the water path switching element 4, and the reverse osmosis membrane end seal 213 is communicated with the concentrated water outlet flow channel 44. The center pipe 211 communicates with the pure water outlet flow passage 45.
Among the optional technical scheme of this embodiment, composite filter element structure includes the rearmounted filter element group spare 5 with the coaxial setting of reverse osmosis membrane 212 filter core, and the end of intaking of rearmounted filter element group spare 5 communicates with center tube 211, and the play water end and the pure water play water runner 45 intercommunication of rearmounted filter element group spare 5, and the outer wall of rearmounted filter element group spare 5 and reverse osmosis membrane end are sealed and are provided with the fourth and cross the water gap between 213, and the fourth is crossed the water gap and is gone out the water runner 44 intercommunication with dense water.
Optionally, the water inlet end of the post-filter cartridge assembly 5 communicates with the central tube 211 through the central joint 9, as shown in fig. 1, 2 and 8.
in an optional technical solution of this embodiment, the post-filter assembly 5 includes a second carbon rod filter element 52, a carbon fiber filter element, or a granular activated carbon filter element.
Optionally, the rear filter element assembly 5 includes a carbon rod cylinder 51, a second carbon rod filter element 52 disposed in the carbon rod cylinder 51, a first filter element end cover 53 fixedly sleeved at one end of the second carbon rod filter element 52 close to the central tube 211, and a second filter element end cover 54 fixedly sleeved at one end of the second carbon rod filter element 52 far from the central tube 211, and a fifth water passing flow channel is disposed between an inner wall of the carbon rod cylinder 51 and an outer wall of the second carbon rod filter element 52. One end of the second filter element end cover 54 is hermetically and fixedly connected with the carbon rod cylinder 51, and the other end is hermetically and fixedly connected with the water channel conversion part 4. The water outlet of the second filter element end cover 54 is communicated with the pure water outlet flow passage 45.
The first filter element end cover 53 closes one end of the second carbon rod filter element 52 away from the waterway conversion member 4, and a water passing gap is arranged between the first filter element end cover and the carbon rod cylinder 51.
In the optional technical scheme of this embodiment, the one end that interior barrel 3 is close to water route crossover sub 4 sets firmly interior barrel end seal 6, and interior barrel end seal 6 and water route crossover sub 4 rigid coupling, and interior barrel end seal 6 and booster water inlet flow path 43 intercommunication.
in the optional technical scheme of this embodiment, composite filter element structure is including setting up third filter core end cover 7 and the fourth filter core end cover 8 in shell 1, and third filter core end cover 7 is located shell 1 and keeps away from the one end of water route conversion part 4, all seals and fixed connection with the outer wall of leading filter core and interior barrel 3 to with the one end rigid coupling of reverse osmosis membrane filter core subassembly 21. The fourth filter element end cover 8 is located at one end of the housing 1 close to the water path conversion member 4, one end of the fourth filter element end cover is hermetically and fixedly connected with the outer wall of the front filter element assembly 22, the other end of the fourth filter element end cover is hermetically and fixedly connected with the water path conversion member 4, and the fourth filter element end cover 8 is communicated with the purified water outlet flow passage 42.
In an alternative solution of this embodiment, the housing 1 includes a first housing 11 and a second housing 12 (as shown in fig. 6 and 7) fixedly connected to the first housing 11, and the first housing 11 and the second housing 12 together enclose an accommodating cavity for accommodating the filter element unit 2. The waterway conversion member 4 is fixedly disposed at an end of the second casing 12 away from the first casing 11, and defines a raw water inlet channel 41 together with the second casing 12.
Optionally, the first housing 11 is a base.
In this embodiment, the raw water inlet channel 41 and the purified water outlet channel 42 are interchangeable, and the pressurized water inlet channel 43 and the concentrated water outlet channel 44 are interchangeable.
in a specific embodiment, after the raw water enters from the raw water inlet channel 41, the raw water is purified into purified water by the first PP filter element 221, the carbon fiber filter element and the second PP filter element 223, and then flows out from the purified water outlet channel 42, and flows into the third water gap through the pressurized water inlet channel 43 after being pressurized by the pressurizing pump, and then flows into the reverse osmosis membrane filter element 212, and after being filtered by the reverse osmosis membrane filter element 212, the concentrated water flows out from the concentrated water outlet channel 44, and the purified water flows out from the purified water outlet channel 45 after passing through the post-filter element.
The water purifier that this embodiment provided includes above-mentioned composite filter element structure, can reach the beneficial effect that above-mentioned composite filter element structure can reach at least, and the repeated explanation is not given here again.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. The composite filter element structure is characterized by comprising a shell (1) and a filter element unit (2) fixedly arranged in the shell (1), wherein the filter element unit (2) comprises a reverse osmosis membrane filter element assembly (21) and a front filter element assembly (22) sleeved on the periphery of the reverse osmosis membrane filter element assembly (21), and an inner cylinder body (3) separates the front filter element assembly (22) from the reverse osmosis membrane filter element assembly (21);
A water path conversion piece (4) is fixedly arranged at one end, close to the water outlet side, of the reverse osmosis membrane filter element assembly (21) of the shell (1), a first water passing gap is formed between the inner wall of the shell (1) and the outer wall of the front filter element assembly (22), a second water passing gap is formed between the inner wall of the front filter element assembly (22) and the outer wall of the inner cylinder body (3), and a third water passing gap is formed between the inner wall of the inner cylinder body (3) and the outer wall of the reverse osmosis membrane filter element assembly (21); the water channel conversion piece (4) is provided with a raw water inlet channel (41) communicated with the first water passing gap, a purified water outlet channel (42) communicated with the second water passing gap, a pressurized water inlet channel (43) communicated with the third water passing gap, a concentrated water outlet channel (44) communicated with a concentrated water outlet of the reverse osmosis membrane filter element assembly (21) and a pure water outlet channel (45) communicated with a pure water outlet of the reverse osmosis membrane filter element assembly (21).
2. The composite filter element structure according to claim 1, wherein the front filter element assembly (22) comprises a carbon fiber filter element and a PP filter element which are arranged in sequence from outside to inside, or comprises a first PP filter element (221), a carbon fiber filter element and a second PP filter element (223) which are arranged in sequence from outside to inside, or comprises a first PP filter element (221), a first carbon rod filter element (222) and a second PP filter element (223) which are arranged in sequence from outside to inside.
3. The composite filter element structure according to claim 1, wherein the reverse osmosis membrane filter element assembly (21) comprises a central tube (211), a reverse osmosis membrane (212) wrapped on the central tube (211), and a reverse osmosis membrane end seal (213) fixedly arranged at one end of the reverse osmosis membrane (212) close to the water path conversion member (4), the reverse osmosis membrane end seal (213) is hermetically and fixedly connected with the water path conversion member (4), and the reverse osmosis membrane end seal (213) is communicated with the concentrated water outlet flow channel (44);
The central pipe (211) is communicated with the pure water outlet flow passage (45).
4. the composite filter element structure according to claim 3, characterized by comprising a post-filter element assembly (5) coaxially arranged with the reverse osmosis membrane (212) filter element, wherein the water inlet end of the post-filter element assembly (5) is communicated with the central pipe (211), the water outlet end of the post-filter element assembly (5) is communicated with the pure water outlet flow channel (45), a fourth water passing gap is arranged between the outer wall of the post-filter element assembly (5) and the reverse osmosis membrane end seal (213), and the fourth water passing gap is communicated with the concentrated water outlet flow channel (44).
5. A composite filter element arrangement according to claim 4, wherein the post-filter element assembly (5) comprises a second carbon rod filter element (52) or a carbon fibre filter element or a granular activated carbon filter element.
6. The composite filter element structure of claim 4, wherein the post-filter element assembly (5) comprises a carbon rod cylinder (51), a second carbon rod filter element (52) arranged in the carbon rod cylinder (51), a first filter element end cover (53) fixedly sleeved on one end, close to the central tube (211), of the second carbon rod filter element (52), and a second filter element end cover (54) fixedly sleeved on one end, far away from the central tube (211), of the second carbon rod filter element (52), and a fifth water flow channel is arranged between the inner wall of the carbon rod cylinder (51) and the outer wall of the second carbon rod filter element (52); one end of the second filter element end cover (54) is hermetically and fixedly connected with the carbon rod cylinder (51), and the other end of the second filter element end cover is hermetically and fixedly connected with the water channel conversion piece (4); and the water outlet of the second filter element end cover (54) is communicated with the pure water outlet flow passage (45).
7. The composite filter element structure according to any one of claims 1 to 6, wherein an inner cylinder end seal (6) is fixedly arranged at one end of the inner cylinder (3) close to the waterway conversion member (4), the inner cylinder end seal (6) is fixedly connected with the waterway conversion member (4), and the inner cylinder end seal (6) is communicated with the pressurized water inlet channel (43).
8. The composite filter element structure according to any one of claims 1 to 6, which comprises a third filter element end cover (7) and a fourth filter element end cover (8) which are arranged in the shell (1), wherein the third filter element end cover (7) is positioned at one end of the shell (1) far away from the waterway conversion piece (4), is hermetically and fixedly connected with the outer wall of the preposed filter element and the inner cylinder (3), and is fixedly connected with one end of the reverse osmosis membrane filter element assembly (21); the fourth filter element end cover (8) is located the shell (1) is close to the one end of the waterway conversion piece (4), one end of the waterway conversion piece is connected with the outer wall of the front filter element assembly (22) in a sealing and fixed mode, the other end of the waterway conversion piece is connected with the waterway conversion piece (4) in a sealing and fixed mode, and the fourth filter element end cover (8) is communicated with the purified water outlet flow channel (42).
9. The composite filter element structure according to any one of claims 1 to 6, wherein the housing (1) comprises a first shell (11) and a second shell (12) fixedly connected with the first shell (11), and the first shell (11) and the second shell (12) jointly enclose a containing cavity for containing the filter element unit (2); the waterway conversion piece (4) is fixedly arranged at one end, far away from the first shell (11), of the second shell (12), and the waterway conversion piece and the second shell (12) jointly define the raw water inlet flow passage (41).
10. A water purification machine comprising a composite filter element arrangement according to any one of claims 1 to 9.
CN201920075283.4U 2019-01-17 2019-01-17 Composite filter element structure and water purifier Active CN209733558U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115159709A (en) * 2022-07-29 2022-10-11 佛山市美的清湖净水设备有限公司 Filter core and water purification unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115159709A (en) * 2022-07-29 2022-10-11 佛山市美的清湖净水设备有限公司 Filter core and water purification unit
CN115159709B (en) * 2022-07-29 2023-10-27 佛山市美的清湖净水设备有限公司 Filter element and water purifying equipment

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