CN111908643A - Composite filter element and water purifier - Google Patents

Abstract

The invention discloses a composite filter element and a water purifier, wherein the composite filter element includes a shell component and a permeation filter component; the shell component is formed with an installation cavity; the permeation filter component is installed in the installation cavity, and the permeation filter component includes a first filter element. A water element, a second water purification element, a first end cover assembly and a second end cover assembly, the first end cover assembly is formed with a first accommodating cavity for accommodating the first water purification element to form a first filter area The first end cover assembly is recessed with an installation groove communicating with the first accommodating cavity, and the second end cover assembly is arranged in the installation groove and is formed with a second accommodating cavity for the second water purifying member to accommodate, so as to form a Second filter area. The invention improves the structure of the filter element, improves the water purification effect of the composite filter element, and also improves the space utilization rate and reduces the overall volume.

Description

Composite filter element and water purifier

technical field

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

Background technique

Reverse osmosis membrane (Reverse Osmosis, RO) is an artificial semi-permeable membrane with certain characteristics made by simulating biological semi-permeable membrane, and it is the core component of reverse osmosis technology. The principle of reverse osmosis technology is that under the action of higher than the osmotic pressure of the solution, these substances and water are separated according to the fact that other substances cannot pass through the semi-permeable membrane. The pore size of the reverse osmosis membrane is very small, so it can effectively remove dissolved salts, colloids, microorganisms, organic matter, etc. in water. The reverse osmosis water purification system has the advantages of good water quality, low energy consumption, no pollution, simple process and easy operation.

Reverse osmosis membranes are widely used in composite filter elements. There are two types of water purification filters, carbon rods and polyaluminum chloride (PAC) in the osmosis filter components of the existing composite filter elements. The separation between carbon rods and polyaluminum chloride is different. Reasonable, the overall space occupation is large, and the space utilization rate of the filter element is low.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a composite filter element, which aims to improve the space utilization rate of the composite filter element to reduce the overall volume.

In order to achieve the above purpose, the present invention proposes a composite filter element, which comprises:

a housing assembly formed with a mounting cavity; and

The osmotic filter assembly is installed in the installation cavity, and the osmotic filter assembly includes a first water purification part, a second water purification part, a first end cap assembly and a second end cap assembly, and the first end cap assembly is in the shape of a There is a first accommodating cavity for accommodating the first water purifying element to form a first filter area; the first end cover assembly is concavely provided with a mounting groove communicating with the first accommodating cavity, so The second end cap assembly is arranged in the installation groove and forms a second accommodating cavity for accommodating the second water purifying element, so as to form a second filtering area.

In one embodiment, the housing assembly includes a filter bottle body and a filter bottle cap on the filter bottle body, and the filter bottle cap is provided with a raw water inlet, a concentrated water outlet and a filter cap. A pure water outlet, the raw water inlet communicates with the first filtration zone, the concentrated water outlet communicates with the first filtration zone, and the pure water outlet communicates with the second filtration zone District connectivity.

In one embodiment, the first water purification member includes a central pipe and a filter membrane element wound on the central pipe, the filtering membrane element forms the first filtering area, and the central pipe is formed from the central pipe. The first filter area of the first end cap assembly extends into the second filter area through the bottom wall of the second end cap assembly and communicates with the pure water outlet through the second water purification member .

In one embodiment, the filtration membrane element includes a nanofiltration membrane, a reverse osmosis membrane and a waterproof membrane, and the nanofiltration membrane and the reverse osmosis membrane are respectively wound and arranged on the outer walls on opposite sides of the central tube. and separated by said waterproof membrane;

The waterproof membrane is used to separate the reverse osmosis membrane and the nanofiltration membrane to prevent the nanofiltration water filtered by the nanofiltration membrane from penetrating into the reverse osmosis membrane and preventing the water passing through the reverse osmosis membrane. The filtered water escapes into the nanofiltration membrane.

In one embodiment, the central pipe includes a first half pipe and a second half pipe connected and fixed with the first half pipe, the nanofiltration membrane is arranged on the first half pipe, the reverse osmosis A membrane is arranged on the second half-pipe, and the waterproof membrane is arranged between the nanofiltration membrane and the reverse osmosis membrane to separate the nanofiltration water filtered through the nanofiltration membrane and the reverse osmosis through the nanofiltration membrane Membrane filtered water.

In one embodiment, the first water purification member is a polyaluminum chloride filter element; the filter membrane element further comprises a polypropylene outer layer and a polyaluminum chloride middle layer;

The nanofiltration membrane/reverse osmosis membrane, the polyaluminum chloride middle layer and the polypropylene outer layer are sequentially wound and arranged on the central pipe from the inside to the outside.

In one embodiment, the second water purification member is a carbon rod filter element.

In one embodiment, the first water purifying element and the first end cap assembly are bonded and sealed by hot melt adhesive; the second water purifying element and the second end cap assembly are sealed by heat Melt adhesive seal.

In one embodiment, the filter bottle body and the first end cap assembly are sealedly connected through a first sealing member; the filter bottle body and the second end cap assembly are sealed through a second seal The first end cap assembly and the second end cap assembly are sealedly connected through a third sealing member.

In order to achieve the above purpose, the present invention also proposes a water purifier, the water purifier includes the composite filter element as described above, and the composite filter element includes:

The composite filter element includes:

a housing assembly formed with a mounting cavity; and

The osmotic filter assembly is installed in the installation cavity, and the osmotic filter assembly includes a first water purification part, a second water purification part, a first end cap assembly and a second end cap assembly, and the first end cap assembly is in the shape of a There is a first accommodating cavity for accommodating the first water purifying element to form a first filter area; the first end cover assembly is concavely provided with a mounting groove communicating with the first accommodating cavity, so The second end cap assembly is arranged in the installation groove and forms a second accommodating cavity for accommodating the second water purifying element, so as to form a second filtering area.

In the technical solution of the present invention, since the composite filter element includes a shell component and a permeation filter component, the shell component is formed with an installation cavity, the permeation filter component is installed in the installation cavity, and the permeation filter component includes a first water purification member, a second A water purification element, a first end cover assembly and a second end cover assembly, the first end cover assembly is formed with a first accommodating cavity for accommodating the first water purification element to form a first filter area; the first end cover The assembly is concavely provided with an installation groove communicating with the first accommodating cavity, and the second end cover assembly is arranged in the installation groove and forms a second accommodating cavity for accommodating the second water purifying element to form a second filtering area, The overall structure of the composite filter element is relatively compact, the space utilization of the composite filter element is improved, and the overall volume is reduced.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.

1 is a schematic structural diagram of an embodiment of a composite filter element of the present invention;

2 is an exploded view of an embodiment of the composite filter element of the present invention;

3 is a cross-sectional view of an embodiment of the composite filter element of the present invention.

Description of reference numbers:

The realization, functional characteristics and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between various components under a certain posture (as shown in the accompanying drawings). The relative positional relationship, the movement situation, etc., if the specific posture changes, the directional indication also changes accordingly.

In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and should not be understood as indicating or implying their relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the meaning of "and/or" in the whole text is to include three parallel schemes. Taking "A and/or B" as an example, it includes scheme A, scheme B, or scheme that A and B satisfy at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present invention.

Reverse osmosis membrane (Reverse Osmosis, RO) is an artificial semi-permeable membrane with certain characteristics made by simulating biological semi-permeable membrane, and it is the core component of reverse osmosis technology. The principle of reverse osmosis technology is that under the action of higher than the osmotic pressure of the solution, these substances and water are separated according to the fact that other substances cannot pass through the semi-permeable membrane. The pore size of the reverse osmosis membrane is very small, so it can effectively remove dissolved salts, colloids, microorganisms, organic matter, etc. in water. The reverse osmosis water purification system has the advantages of good water quality, low energy consumption, no pollution, simple process and easy operation.

Reverse osmosis membranes are widely used in composite filter elements. In an exemplary technology, the osmotic filter components of the composite filter element include carbon rods and polyaluminum chloride (Poly Aluminum Chloride, PAC) water purification filters. The separation of aluminum is unreasonable, the overall space is large, and the space utilization rate of the filter element is low.

In order to improve the space utilization rate of the composite filter element and reduce the overall volume, the present invention proposes a composite filter element, which is suitable for various water purification devices, which is not limited here.

1 to 3 , in an embodiment of the present invention, the composite filter element includes a housing component 100 and a permeation filter component 200; the housing component 100 is formed with an installation cavity; the permeation filter component 200 is installed in the installation cavity, and the permeation filter The assembly 200 includes a first water purification member 210 , a second water purification member 220 , a first end cap assembly 230 and a second end cap assembly 240 . The first end cap assembly 230 is formed to accommodate the first water purification member 210 . The first accommodating cavity is formed to form the first filter area 200a; the first end cap assembly 230 is recessed with an installation groove 230a communicating with the first accommodating cavity, and the second end cap assembly 240 is disposed in the installation groove 230a and formed with A second accommodating cavity for accommodating the second water purifying member 220 is formed to form a second filtering area 200b.

In this embodiment, the housing assembly 100 of the composite filter element may include a filter bottle body 110 and a filter bottle cap 120 covered on the filter bottle body 110. The filter bottle cap 120 is provided with a raw water inlet 100a, a concentrated water The liquid outlet 100b and the pure water outlet 100c, the raw water inlet 100a can be communicated with the first filtration area 200a, the concentrated water outlet 100b can be communicated with the first filtration area 200a and the second filtration area 200b, and the pure water outlet The liquid port 100c may communicate with the second filter area 200b. The filter cap 120 can be provided with a plurality of faucets to form the raw water inlet 100a, the concentrated water outlet 100b and the pure water outlet 100c. The faucet corresponding to the raw water inlet 100a can be provided with a solenoid valve, which can be increased by setting. The pressure pump pumps the raw water into the first filter area 200a inside the composite filter element.

It should be noted that the first water purification member 210 may be a filter element formed of water purification materials such as polyaluminum chloride, polypropylene, polyaluminum ferric chloride, etc., and the second water purification member 220 may be a filter element such as an activated carbon rod. , the specific materials of the first water purification member 210 and the second water purification member 220 are not limited.

Among them, the polyaluminum chloride filter element can effectively filter out the rust, sediment, abnormal color, peculiar smell, residual chlorine and some organic substances in the tap water, which can ensure the water quality entering the filter element, thereby prolonging the life of the filter element. The first water purifying member 210 may include a first filter element layer, a second filter element layer and a third filter element layer sequentially arranged from outside to inside, wherein the first filter element layer may be a polypropylene (PP) non-woven roll winding layer, and the filtration precision of the polypropylene non-woven winding layer can be 5um to ensure the filtering effect; the second filter element layer can be the middle layer of polyaluminum chloride; the third filter element layer can be nanofiltration membrane or reverse osmosis membrane roll winding layer. In the actual application process, the thickness of the filter element layer can be set according to the region and different water quality, so as to better meet the user's demand for purified water quality. Wherein, the reverse osmosis membrane filter element layer can be wound on the central pipe 211 with the polyaluminum chloride filter element layer and the polypropylene filter element layer by a multi-membrane sheet rolling process.

The first end cap assembly 230 may be composed of a plurality of hollow cylindrical shells, and the pipe diameter of the shell near the bottom of the filter bottle body 110 may be smaller than the pipe diameter of the shell far from the bottom of the filter bottle body 110 The above-mentioned first accommodating cavity is formed between the casing close to the bottom of the filter bottle body 110 and the casing far from the bottom of the filter bottle body 110 for the installation of the first water purification member 210, and the casing located on the upper side It can be sealingly connected with the filter bottle cap 120, and the second end cap assembly 240 can be installed in the housing located on the upper side.

The second end cover assembly 240 can also be composed of a plurality of hollow cylindrical shells to form a second accommodating cavity for the second water purification member 220 to be installed. The lower shell of the second end cover assembly 240 can be provided with The communication port is used to communicate with the first accommodating cavity, and the upper shell of the second end cap assembly 240 can be sealedly connected with the filter bottle cap 120 .

Wherein, a raw water inlet channel can be formed between the outer wall of the lower casing of the second end cap assembly 240 and the inner wall of the upper casing of the first end cap assembly 230 and communicated with the raw water inlet 100a. A concentrated water drainage channel may be formed between the inner wall of the cover assembly 240 and the outer wall of the second water purification member 220 and communicated with the concentrated water discharge port 100b, and a pure water outlet channel may be formed in the middle of the second water purification member 220 and connected with the pure water. The water outlet 100c communicates with each other.

In the present embodiment, preferably, referring mainly to FIG. 3 , the first end cap assembly 230 may include a first end cap 231 and a second end cap 232 disposed in the first end cap 231 . The second end cap assembly 240 may include a third end cover 241 and a fourth end cover 242 covered on the third end cover 241 , and such arrangement not only facilitates assembly, but also improves the space utilization rate of the composite filter element as much as possible.

It can be understood that, in the present invention, the housing assembly 100 of the composite filter element is formed with an installation cavity, and the osmotic filter assembly 200 is installed in the installation cavity. The osmotic filter assembly 200 includes a first water purification member 210 and a second water purification member 220 , a first end cap assembly 230 and a second end cap assembly 240, the first end cap assembly 230 is formed with a first accommodating cavity for accommodating the first water purification member 210 to form a first filter area 200a; The end cap assembly 230 is recessed with an installation groove 230a communicating with the first accommodating cavity, and the second end cap assembly 240 is disposed in the installation groove 230a and forms a second accommodating cavity for accommodating the second water purification member 220, In order to form the second filter area 200b, the overall structure of the composite filter element is relatively compact, the space utilization of the composite filter element is improved, and the overall volume is reduced.

Referring mainly to FIG. 2 and FIG. 3 , in order to reduce the overall volume of the composite filter element as much as possible while achieving a better water purification effect, in one embodiment, the first water purification member 210 includes a central pipe 211 and a winding arrangement The filter membrane element 212 on the central tube 211 forms the first filter zone 200a, and the central tube 211 extends from the first filter zone 200a of the first end cap assembly 230 through the bottom wall of the second end cap assembly 240 into the second filter area 200b and communicated with the pure water outlet 100c through the second water purification member 220 .

In this embodiment, the filtration membrane element 212 may include a nanofiltration membrane, a reverse osmosis membrane and a waterproof membrane. The nanofiltration membrane and the reverse osmosis membrane are respectively wound on the outer walls on opposite sides of the central tube 211 and separated by the waterproof membrane. The waterproof membrane is used to separate the reverse osmosis membrane and the nanofiltration membrane to prevent the nanofiltration water filtered by the nanofiltration membrane from entering the reverse osmosis membrane and prevent the filtered water passing through the reverse osmosis membrane from entering the nanofiltration membrane.

Further, the central pipe 211 may include a first half pipe and a second half pipe connected and fixed with the first half pipe. The nanofiltration membrane is arranged on the first half pipe, the reverse osmosis membrane is arranged on the second half pipe, and the waterproof membrane is arranged on the second half pipe. It is set between the nanofiltration membrane and the reverse osmosis membrane to separate the nanofiltration water filtered by the nanofiltration membrane and the filtered water passed through the reverse osmosis membrane. This arrangement greatly improves the water purification effect of the composite filter element.

The first water purification member 210 may be a polyaluminum chloride filter element; the filter membrane element 212 may further include a polypropylene outer layer and a polyaluminum chloride middle layer. The nanofiltration membrane/reverse osmosis membrane, the polyaluminum chloride middle layer and the polypropylene outer layer are sequentially wound and arranged on the central pipe 211 from the inside to the outside.

It can be understood that, in this embodiment, the raw water enters the first filtration zone 200a through the raw water inlet 100a and is filtered by the first water purifying element 210, and then flows to the second filtration zone 200b through the central pipe 211. Pure water is obtained after the second water purification member 220 performs another water purification treatment, and the pure water flows out through the pure water outlet 100c. Wherein, the concentrated water produced by the first filtering area 200a and the second filtering area 200b is discharged through the concentrated water discharge port 100b.

As shown in FIG. 3 , in order to prevent the raw water, concentrated water and pure water from running around so as to affect the quality of the filtered water, in one embodiment, the first water purifying member 210 and the first end cap assembly 230 may be heated through a hot melt. Adhesive sealing, specifically, the front PAC filter element can be connected to the first end cover 231 and the second end cover 232 by hot melt adhesive sealing respectively; It can be sealed by hot melt adhesive. Specifically, the carbon rod and the third end cap 241 and the fourth end cap 242 can be connected by hot melt adhesive respectively.

In addition, in some embodiments, the filter bottle body 110 and the first end cap assembly 230 may be sealedly connected by a first sealing member, specifically, the filter bottle body 110 and the first end cap 231 and the second end The caps 232 may be sealedly connected through the first sealing member respectively; the filter bottle body 110 and the second end cap assembly 240 may be sealedly connected through the second sealing member, specifically, the filter bottle body 110 and the third end cap 241 and the fourth end cap 242 may be sealedly connected through a second sealing member respectively; the first end cap assembly 230 and the second end cap assembly 240 may be sealedly connected through a third sealing member, specifically, the second end cap 232 and the fourth end cap 232 The end caps 242 may be hermetically connected by a third seal.

Wherein, the first sealing member, the second sealing member and the third sealing member can all be O-rings, and the material thereof can be silicone or rubber, and the size, shape and material thereof are not limited here.

The present invention also proposes a water purifier, which includes a composite filter element. The specific structure of the composite filter element refers to the above-mentioned embodiment. , at least has the same technical effect as the composite filter element, which will not be described one by one here.

1 and 3, in an embodiment of the present invention, the water purifier composite filter element includes a housing component 100 and a permeation filter component 200; the housing component 100 is formed with an installation cavity; the permeation filter component 200 is installed in the installation cavity The osmotic filter assembly 200 includes a first water purification member 210, a second water purification member 220, a first end cap assembly 230 and a second end cap assembly 240, and the first end cap assembly 230 is formed to supply the first water purification member 210. The first accommodating cavity for accommodating to form the first filter area 200a; the first end cap assembly 230 is concavely provided with an installation groove 230a communicating with the first accommodating cavity, and the second end cap assembly 240 is arranged in the installation groove 230a A second accommodating cavity for accommodating the second water purifying member 220 is formed to form the second filtering area 200b.

Among them, the water purification system of the water purifier includes a water inlet pipeline, a pure water pipeline and a concentrated water pipeline; the water inlet pipeline is connected with the raw water inlet 100a of the composite filter element, and the concentrated water pipeline is connected with the concentrated water outlet 100b of the composite filter element. The pure water pipeline is connected with the pure water liquid outlet 100c of the composite filter element.

The above descriptions are only optional embodiments of the present invention, and are not intended to limit the scope of the present invention. Under the inventive concept of the present invention, any equivalent structural transformations made by using the contents of the description and drawings of the present invention, or direct/indirect Applications in other related technical fields are included in the scope of patent protection of the present invention.

Claims (10)

1. a composite filter element, is characterized in that, described composite filter element comprises: a housing assembly formed with a mounting cavity; and The osmotic filter assembly is installed in the installation cavity, and the osmotic filter assembly includes a first water purification part, a second water purification part, a first end cap assembly and a second end cap assembly, and the first end cap assembly is in the shape of a There is a first accommodating cavity for accommodating the first water purifying element to form a first filter area; the first end cover assembly is concavely provided with a mounting groove communicating with the first accommodating cavity, so The second end cap assembly is arranged in the installation groove and forms a second accommodating cavity for accommodating the second water purifying element, so as to form a second filtering area. 2 . The composite filter element according to claim 1 , wherein the housing assembly comprises a filter bottle body and a filter bottle cap covered on the filter bottle body, and the filter bottle cap is provided with a raw water inlet. 3 . A liquid port, a concentrated water discharge port and a pure water liquid outlet, the raw water liquid inlet is communicated with the first filtration area, the concentrated water discharge port is communicated with the first filtration area, and the pure water The liquid outlet communicates with the second filter area. 3 . The composite filter element according to claim 2 , wherein the first water purification element comprises a central pipe and a filter membrane element wound on the central pipe, and the filter membrane element forms the first water purification element. 4 . A filter area, the central pipe extends from the first filter area of the first end cap assembly to the second filter area through the bottom wall of the second end cap assembly and passes through the second water purification member communicated with the pure water outlet. 4. The composite filter element according to claim 3, wherein the filter membrane element comprises a nanofiltration membrane, a reverse osmosis membrane and a waterproof membrane, and the nanofiltration membrane and the reverse osmosis membrane are respectively wound around the on opposite sides of the central tube on the outer walls and separated by the waterproof membrane; The waterproof membrane is used to separate the reverse osmosis membrane and the nanofiltration membrane to prevent the nanofiltration water filtered by the nanofiltration membrane from penetrating into the reverse osmosis membrane and preventing the water passing through the reverse osmosis membrane. The filtered water escapes into the nanofiltration membrane. 5 . The composite filter element according to claim 4 , wherein the central pipe comprises a first half pipe and a second half pipe connected and fixed with the first half pipe, and the nanofiltration membrane is arranged on the first half pipe. 6 . On one half of the tubes, the reverse osmosis membrane is arranged on the second half tube, and the waterproof membrane is arranged between the nanofiltration membrane and the reverse osmosis membrane, so as to separate the filtration through the nanofiltration membrane. Nanofiltered water and filtered water through the reverse osmosis membrane. 6. The composite filter element according to claim 5, wherein the first water purification element is a polyaluminum chloride filter element; the filter membrane element further comprises a polypropylene outer layer and a polyaluminum chloride middle layer; The nanofiltration membrane/reverse osmosis membrane, the polyaluminum chloride middle layer and the polypropylene outer layer are sequentially wound and arranged on the central pipe from the inside to the outside. 7 . The composite filter element according to claim 1 , wherein the second water purification member is a carbon rod filter element. 8 . 8 . The composite filter element according to claim 1 , wherein the first water purification member and the first end cap assembly are bonded and sealed by hot melt adhesive; the second water purification member and the The second end cap assemblies are sealed by hot melt adhesive bonding. 9 . The composite filter element according to claim 2 , wherein the filter bottle body and the first end cap assembly are sealedly connected by a first seal; the filter bottle body and the second The end cap assemblies are sealedly connected through a second sealing member; the first end cap assembly and the second end cap assembly are sealedly connected through a third sealing member. 10. A water purifier, characterized in that, the water purifier comprises the composite filter element according to any one of claims 1 to 9.

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