CN220951226U - Composite filter element with replaceable core and water purifying equipment - Google Patents

Abstract

The utility model relates to the technical field of water purification, and discloses a composite filter element with a replaceable core and water purification equipment. The composite filter element with the replaceable core comprises a filter flask, a filter membrane filter element and a rear filter element; the filter membrane filter element comprises a filter membrane filter piece and a filter membrane bracket connected to the top of the filter membrane filter piece, the filter membrane bracket penetrates through the filter flask, and a taking and placing port is formed in the filter membrane bracket; the rear filter element penetrates through the filter membrane filter element, the diameter of the rear filter element is smaller than the inner diameter of the taking and placing opening, and the rear filter element can be taken and placed from the taking and placing opening. The composite filter element with the replaceable core can realize the independent replacement of the expired filter element, ensure the water use safety of users, and simultaneously reduce the use cost of the users.

Description

Composite filter element with replaceable core and water purifying equipment

Technical Field

The utility model relates to the technical field of water purification, in particular to a composite filter element with a replaceable core and water purification equipment.

Background

Tap water delivered to individual users from municipal water works typically contains a certain amount of salt ions, metal species, chlorides, microorganisms, silt, etc. In order to improve drinking water quality, more and more families choose to install water purifying equipment on a water outlet pipe of tap water, wherein the water purifying equipment comprises a plurality of functional filter cores so as to remove different types of harmful substances in the tap water.

The composite filter element is characterized in that two or more filter elements are arranged in a filter flask of the water purifying equipment, and one or more filter materials used for the filter elements can be also related. Because the filter materials of the filter cores are inconsistent, the service lives of the filter cores are different. After the water purifier is used for a period of time, the composite filter element needs to be replaced so as to ensure the drinking safety of the water quality of the filtered purified water. However, the composite filter element in the prior art is usually designed into an integral disposable structure, which leads to the need of integral replacement of the composite filter element when a user replaces the composite filter element, so that the phenomenon that the filter element in the composite filter element is still used all the time after expiration or the filter element is replaced when the filter element is not expired may exist, the water use safety of the user is affected by the former, and the use cost of the user is increased by the latter.

Therefore, it is desirable to provide a replaceable composite filter element to solve the above-mentioned problems.

Disclosure of Invention

Based on the above problems, a first object of the present utility model is to provide a composite filter element with replaceable core, which can realize the individual replacement of the expired filter element, ensure the water safety of users, and reduce the use cost of users.

The second object of the present utility model is to provide a water purifying apparatus, which can ensure the safety of water for users and reduce the use cost for users by applying the above-mentioned composite filter element with replaceable core.

In order to achieve the above object, the following technical scheme is provided:

the utility model provides a composite filter element with a replaceable core, which comprises:

A filter flask;

The filter membrane filter element comprises a filter membrane filter piece and a filter membrane bracket connected to the top of the filter membrane filter piece, wherein the filter membrane bracket penetrates through the filter flask, and a taking and placing port is arranged on the filter membrane bracket;

The rear filter element penetrates through the filter membrane filter element, the diameter of the rear filter element is smaller than the inner diameter of the taking and placing opening, and the rear filter element can be taken and placed from the taking and placing opening.

As a preferable scheme of the composite filter element with the replaceable core, the rear filter element comprises a rear filter element and a rear support connected to the top of the rear filter element, wherein the rear support and the hole wall of the taking and placing hole are arranged at intervals, and a holding space is formed between the rear support and the hole wall of the taking and placing hole.

As a preferable scheme of the composite filter element with the replaceable core, the interval between the rear support and the hole wall of the taking and placing hole is larger than or equal to 8mm.

As a preferable scheme of the composite filter element with the replaceable core, the rear support is provided with an anti-skid structure.

As a preferable scheme of the composite filter element with the replaceable core, the composite filter element further comprises a central tube, wherein the central tube is positioned between the filter membrane filter element and the rear filter element, a water passing hole is formed in the central tube, and pure water formed after being filtered by the filter membrane filter element can flow into the central tube through the water passing hole and then be filtered by the rear filter element.

As a preferable scheme of the composite filter element with the replaceable core, the rear support and the central tube are in sealing connection through the sealing piece, and at least one of the rear support and the central tube is provided with a sealing surface matched with the sealing piece.

As a preferable scheme of the composite filter element with the replaceable core, the rear support is provided with the first accommodating groove, and the rear filter part is partially accommodated in the first accommodating groove.

As a preferable scheme of the composite filter element with the replaceable core, the filter flask comprises:

the bottle body is of a hollow structure with an opening of the filter bottle;

the bottle cap is covered at the opening of the filter bottle, a first through center hole is formed in the bottle cap, and the filter membrane support penetrates through the first center hole and forms a raw water waterway with the hole wall of the first center hole.

As a preferable scheme of the composite filter element with the replaceable core, the opening with the upward pick-and-place opening is in a flaring shape.

In order to achieve the above purpose, the utility model also provides water purifying equipment, which comprises a machine body and the composite filter element with the replaceable core, wherein the composite filter element with the replaceable core is arranged in the machine body.

The beneficial effects of the utility model are as follows:

The utility model provides a composite filter element with a replaceable core, which comprises a filter flask, a filter membrane filter element and a rear filter element, wherein the filter membrane filter element comprises a filter membrane filter piece and a filter membrane bracket connected to the top of the filter membrane filter piece, the filter membrane bracket penetrates through the filter flask, and a taking and placing port is arranged on the filter membrane bracket; the rear filter element penetrates through the filter membrane filter element, the diameter of the rear filter element is smaller than the inner diameter of the taking and placing opening, and the rear filter element can be taken and placed from the taking and placing opening. The design can facilitate a user to take and put the rear filter element from the taking and putting opening. When the service life of the rear filter element is shorter than that of the filter membrane filter element, a user can take the expired rear filter element out of the taking and placing port and replace a new rear filter element, so that the expired rear filter element is independently replaced; when the service life of the rear filter element is longer than that of the filter membrane filter element, a user can take out the unexpired rear filter element and put the unexpired rear filter element into a new semi-finished product consisting of the filter flask and the filter membrane filter element so as to continuously use the unexpired rear filter element, thereby reducing the use cost of the composite filter element for the user and ensuring the water use safety of the user.

According to the water purifying equipment provided by the utility model, through the application of the composite filter element with the replaceable core, the filter element which is expired first can be replaced according to the service life of each filter element, so that the water use safety of a user is ensured, and meanwhile, the use cost of the user is reduced, and the use experience of the user is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic cross-sectional view of a replaceable-core composite filter element provided in an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a process for taking and placing a rear filter element of a composite filter element with a replaceable core according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a post-cartridge provided in an embodiment of the present utility model;

FIG. 4 is a schematic view in partial cross-section of a replaceable-core composite filter element provided in an embodiment of the utility model;

FIG. 5 is an exploded schematic view of a replaceable cartridge composite filter element provided in an embodiment of the present utility model;

FIG. 6 is a schematic cross-sectional view of a center tube provided by an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a central tube according to an embodiment of the present utility model.

In the figure:

1-a filter flask; 11-a bottle body; 111-an accommodation chamber; 12-bottle cap; 121-a raw water waterway;

2-a filter membrane cartridge; 21-a filter membrane filter; 22-a filter membrane support; 221-a taking and placing port;

3-a central tube; 31-a hollow chamber; 32-water passing holes;

4-a rear filter element; 41-post filter; 42-a rear support; 421-seal groove; 422-a purified water channel; 43-lower end cap; 44-seals.

Detailed Description

In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Fig. 1 shows a schematic cross-sectional view of a composite filter cartridge of the replaceable cartridge provided by the present embodiment. Fig. 2 shows a schematic diagram of a process of taking and placing the rear filter element 4 of the composite filter element with the replaceable core provided in the embodiment. As shown in fig. 1-2, the present embodiment provides a composite filter element with a replaceable core, the composite filter element includes a filter flask 1, a filter membrane filter element 2 and a rear filter element 4, wherein the filter membrane filter element 2 includes a filter membrane filter member 21 and a filter membrane support 22 connected to the top of the filter membrane filter member 21, the filter membrane support 22 is disposed through the filter flask 1, and a taking and placing port 221 is disposed on the filter membrane support 22; the rear filter element 4 penetrates through the filter membrane filter element 2, the diameter of the rear filter element 4 is smaller than the inner diameter of the taking and placing opening 221, and the rear filter element 4 can be taken and placed from the taking and placing opening 221. The design can facilitate a user to take and put the rear filter element 4 from the taking and putting opening 221. When the service life of the post-filter element 4 is shorter than that of the filter membrane filter element 2, a user can take out the expired post-filter element 4 from the taking and placing port 221 and replace a new post-filter element 4, so that the expired post-filter element 4 is independently replaced; when the service life of the rear filter element 4 is longer than that of the filter membrane filter element 2, a user can take out the unexpired rear filter element 4 and put the unexpired rear filter element 4 into a new semi-finished product consisting of the filter flask 1 and the filter membrane filter element 2 so as to continuously use the unexpired rear filter element 4, thereby reducing the use cost of the composite filter element for the user and ensuring the water use safety of the user.

Optionally, the filter membrane filter element 21 is an RO reverse osmosis filter element or an NF nanofiltration filter element, so that viruses, bacteria, heavy metals, ions, organic matters and the like in raw water can be effectively removed, the water quality is improved, and the water quality is purer.

It should be noted that, in the present embodiment, untreated water is referred to as "raw water", such as tap water taken in from municipal pipelines; the water after the filter membrane filter element 2 is treated is called as pure water, and the water after the post filter element 4 is treated is called as pure water; the terms "raw water", "pure water" and "purified water" used in the examples should not be interpreted in their literal sense.

Optionally, the upward opening of the pick-and-place opening 221 is flared, so as to facilitate rapid insertion of the post-filter element 4 into the pick-and-place opening 221.

The rear filter element 4 comprises a rear filter element 41 and a rear support 42 connected to the top of the rear filter element 41, wherein the rear support 42 and the hole wall of the taking and placing hole 221 are arranged at intervals, and a holding space is formed by the interval between the rear support 42 and the hole wall of the taking and placing hole 221, so that a user can conveniently grasp the rear support 42 by stretching his or her hand into the holding space. Optionally, the interval between the rear support 42 and the hole wall of the pick-and-place opening 221 is greater than or equal to 8mm, and the interval can enable the composite filter element to have a smaller volume on the premise that the hand of the user can easily extend into the holding space to grasp the rear support 42, so as to save processing cost.

To prevent the user from slipping with the rear bracket 42 to affect the replacement efficiency when the user replaces the rear filter cartridge 4, an anti-slip structure is provided on the rear bracket 42 in this embodiment. Alternatively, the anti-slip structure may be an anti-slip protrusion provided on the rear bracket 42 or an anti-slip layer coated on the rear bracket 42.

Fig. 3 shows a schematic cross-sectional view of the post-filter cartridge 4 provided in this embodiment. Fig. 4 shows a schematic partial cross-sectional view of a composite filter cartridge of the replaceable cartridge provided by the present embodiment. As shown in fig. 3-4 and fig. 2, the composite filter element further comprises a central tube 3, wherein the central tube 3 is positioned between the filter membrane filter element 2 and the rear filter element 4, the central tube 3 is provided with a water passing hole 32, and pure water formed after being filtered by the filter membrane filter element 2 can flow into the central tube 3 through the water passing hole 32 and then be filtered by the rear filter element 4. The filter membrane filter element 2 is wound on the periphery of the central tube 3, the rear filter element 4 is positioned in the hollow cavity 31 of the central tube 3, and the rear bracket 42 is provided with a through water purification waterway 422. Raw water is filtered by the filter membrane filter element 2 to form pure water, the pure water flows into the hollow cavity 31 of the central tube 3 through the water passing hole 32, the post filter element 4 carries out secondary filtration to form the pure water, and the pure water can flow out through the pure water waterway 422 for a user to take.

Optionally, the rear support 42 is sealingly connected to the central tube 3 by a seal 44. Compression through sealing member 44 between rearmounted support 42 and cavity 31 is as axial sealing connection, compares with the mode that adopts welded fastening in the prior art, and this fixed knot constructs has easy dismouting, does not have the advantage of frock cost, and can improve production efficiency. When the rear filter element 4 is disassembled, a user only needs to overcome the axial compression force of the sealing piece 44, and the assembly and disassembly are simple, convenient and quick. Optionally, the sealing member 44 is a rubber sealing ring, which is convenient to obtain materials and has good sealing effect.

Further, in the present embodiment, at least one of the rear bracket 42 and the center tube 3 is provided with a sealing surface that mates with the seal 44. Specifically, the rear support 42 is provided with a sealing groove 421, and the sealing groove 421 is used for accommodating the sealing member 44. The sealing groove 421 can realize the accommodation and the limit of the sealing element 44, prevent the sealing element 44 from falling off, and the surface of the sealing element 44 abutting against the hollow cavity 31 of the central tube 3 forms a sealing surface on the central tube 3, and the surface of the sealing element 44 abutting against the rear support 42 forms a sealing surface on the rear support 42. Of course, in other embodiments, the sealing groove 421 may be provided on the wall of the hollow chamber 31, which can achieve the above effect.

When the user removes the post-filter element 4, he/she needs to insert his/her hand into the access opening 221 and hold the top of the post-support 42 to pull out the entire post-filter element 4. In order to prevent the rear support 42 and the rear filter 41 from being separated during the process of disassembling the rear filter element 4, in this embodiment, the rear filter 41 is adhered to the rear support 42, so that the assembly is convenient, and the connection is stable. Optionally, the rear support 42 is provided with a first accommodating groove, and the rear filter 41 is partially accommodated in the first accommodating groove, so that the connection area between the rear support 42 and the rear filter 41 can be increased, and the connection stability between the rear support and the rear filter 41 can be improved.

Further, the post filter element 4 further comprises a lower end cover 43, and the lower end cover 43 is connected to the bottom of the post filter element 41, so as to prevent the purified water filtered by the post filter element 41 from leaking from two ends of the post filter element 41, and ensure the quality of the purified water. Optionally, the lower end cover 43 is adhered to the post filter 41, which is convenient for assembly and is firmly connected.

In order to achieve stable connection between the rear support 42 and the hollow chamber 31, an annular second accommodating groove is provided on the chamber wall of the hollow chamber 31, and the rear support 42 is partially accommodated in the second accommodating groove.

Optionally, in this embodiment, the number of the post-filter members 41 is one, and the post-filter members 41 are activated carbon filter elements or mineralized filter elements with adsorption function, so as to remove the peculiar smell in the pure water and ensure the taste of the water. Of course, in other embodiments, the number of the post-filtering members 41 may be plural, and the plurality of post-filtering members 41 may be sequentially connected in series and detachably in the vertical direction, and the pure water filtered by the filter membrane filter element 2 may sequentially pass through the plurality of post-filtering members 41 for multi-stage filtration, so as to improve the water purifying effect and realize multifunctionalization of the drinking water. When the service lives of the plurality of post-filter elements 41 are different, the user can replace the expired post-filter element or elements 41 by removing the entire post-filter element 4 from the hollow chamber 31.

Fig. 5 shows an exploded schematic view of the replaceable-core composite filter element provided in this embodiment. As shown in fig. 5 and in combination with fig. 1, the filter flask 1 includes a flask body 11 and a flask cover 12, the flask body 11 has a hollow structure with a flask opening, and the hollow structure of the flask body 11 forms a containing chamber 111; the bottle cap 12 is sealed at the opening of the filter bottle. The filter membrane filter element 2, the central tube 3 and the post filter element 4 are all accommodated in the accommodating chamber 111 of the bottle body 11. Optionally, the bottle cap 12 is provided with a first through center hole, and the filter membrane bracket 22 is arranged in the first center hole in a penetrating manner and forms a raw water waterway 121 with the hole wall of the first center hole; the filter support 22 is provided with a second central hole, and the second central hole forms the pick-and-place opening 221. The raw water channel 121 is used for introducing raw water into the inlet side of the filter membrane filter element 2, pure water generated after the raw water is filtered by the filter membrane filter element 2 enters the hollow chamber 31 of the central tube 3, and is subjected to post-filtration by the post-filter 41, and the pure water generated after the filtration flows out of the pure water channel 422 for a user to take.

After the composite filter element is assembled, the taking and placing port 221 can be used as a waste water channel to discharge the waste water generated after the filter element 2 is filtered. The other end of the waste water channel (i.e. the taking and placing port 221) can be connected with a waste water treatment device so as to use the part of waste water for irrigation, field watering and the like, thereby avoiding the waste of water resources. The sealing member 44 can also prevent water channeling between the waste water channel and the hollow chamber 31, affecting the quality of pure water.

Optionally, in this embodiment, the bottle cap 12 is welded to the bottle body 11, which is convenient for processing and is firmly connected. Of course, in other embodiments, the bottle cap 12 may be detachably connected to the bottle body 11, which can achieve the above effects. Illustratively, the bottle cap 12 is connected to the bottle body 11 by a threaded connection or a snap-fit connection.

Fig. 6 shows a schematic cross-sectional view of the center tube 3 provided by the present embodiment. Fig. 7 shows a schematic structural view of the center tube 3 provided in the present embodiment. As shown in fig. 6-7 and fig. 1, the number of water passing holes 32 on the central tube 3 is plural, and the plural water passing holes 32 are arranged at intervals along the axial direction and/or the circumferential direction of the central tube 3, so that pure water generated at each position on the side wall of the central tube 3 can be guided into the hollow chamber 31 for post-filtration, and the water guiding efficiency is high.

The assembly process of the composite filter element is briefly described below in connection with fig. 1-7: 1) Winding the filter membrane filter element 2 around the periphery of the central tube 3; 2) Placing the assembled filter membrane filter element 2 and the central tube 3 into the accommodating chamber 111 of the bottle body 11; 3) Welding the bottle cap 12 at the opening of the filter bottle of the bottle body 11; 4) The hand-held post-holder 42 places the entire post-cartridge 4 into the hollow chamber 31 of the central tube 3.

The core replacement process of the composite filter element comprises the following steps: 1) The user grasps the rear support 42 by hand and pulls it upwards, and after the sealing member 44 is completely separated from the wall of the hollow chamber 31, the entire rear filter element 4 is pulled out from the central tube 3; 2) The user then places a new cartridge 4 into the hollow chamber 31 from the access opening 221 and applies the compression of the seal 44 as an axial sealing connection between the cartridge 4 and the central tube 3.

The water purification process of the composite filter element (the arrow direction in fig. 1 is the water flow direction) is briefly described below with reference to fig. 1 to 7: 1) Raw water enters the accommodating chamber 111 through the raw water channel 121 and is filtered in the filter membrane filter element 2; 2) Pure water filtered by the filter membrane filter element 2 enters the hollow cavity chamber 31 through the water passing hole 32, the pure water entering the hollow cavity chamber 31 can be subjected to post-filtration in the post-filter element 4, and the filtered pure water can flow out of the pure water waterway 422 for a user to take; 3) The wastewater generated after the filtration by the filter membrane filter element 2 flows out of the wastewater waterway (the taking and placing port 221).

The embodiment also provides water purifying equipment, which comprises a machine body and the composite filter element with the replaceable core, wherein the composite filter element with the replaceable core is arranged in the machine body. According to the water purifying device, through the composite filter element with the replaceable core, a user can replace the filter element which expires first according to the service life of each filter element, so that the water use safety of the user is guaranteed, and meanwhile, the use cost of the user can be reduced, and the use experience of the user is improved.

Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims (10)

1. A replaceable cartridge composite filter comprising:

a filter flask (1);

The filter membrane filter element (2) comprises a filter membrane filter piece (21) and a filter membrane bracket (22) connected to the top of the filter membrane filter piece (21), wherein the filter membrane bracket (22) penetrates through the filter flask (1), and a taking and placing port (221) is formed in the filter membrane bracket (22);

The rear filter element (4) penetrates through the filter membrane filter element (2), the diameter of the rear filter element (4) is smaller than the inner diameter of the taking and placing opening (221), and the rear filter element (4) can take and place from the taking and placing opening (221).

2. The composite filter element with replaceable core according to claim 1, wherein the post filter element (4) comprises a post filter element (41) and a post bracket (42) connected to the top of the post filter element (41), the post bracket (42) is spaced from the wall of the access opening (221), and the space between the post bracket and the wall of the access opening forms a holding space.

3. The replaceable-core composite filter element of claim 2, wherein a spacing between the rear support (42) and a wall of the pick-and-place port (221) is greater than or equal to 8mm.

4. A composite filter cartridge according to claim 2, wherein the rear support (42) is provided with an anti-slip structure.

5. The composite filter element with the replaceable core according to claim 2, further comprising a central tube (3), wherein the central tube (3) is located between the filter membrane filter element (2) and the rear filter element (4), a water passing hole (32) is formed in the central tube (3), and pure water formed after filtering by the filter membrane filter element (2) can flow into the central tube (3) through the water passing hole (32) and then is filtered by the rear filter element (4).

6. The replaceable-core composite filter element of claim 5, wherein the rear support (42) and the center tube (3) are sealingly connected by a seal (44), and at least one of the rear support (42) and the center tube (3) is provided with a sealing surface that mates with the seal (44).

7. A composite filter cartridge according to claim 2, wherein the rear support (42) is provided with a first receiving recess, the rear filter element (41) being partially received in the first receiving recess.

8. The replaceable-core composite filter element according to any of claims 1-7, wherein the filter flask (1) comprises:

a bottle body (11) which is a hollow structure with a filter bottle opening;

The bottle cap (12) is covered at the opening of the filter bottle, a first through center hole is formed in the bottle cap (12), and the filter membrane bracket (22) penetrates through the first center hole and forms a raw water waterway (121) with the hole wall of the first center hole.

9. A composite filter cartridge according to any one of claims 1 to 7, wherein the upwardly facing opening of the pick-and-place mouth (221) is flared.

10. A water purification apparatus comprising a body and a replaceable cartridge according to any one of claims 1 to 9, the replaceable cartridge being mounted within the body.