CN214360758U

CN214360758U - Filter element

Info

Publication number: CN214360758U
Application number: CN202022424274.7U
Authority: CN
Inventors: 陈承; 高尚鹏; 卜凡敏
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-10-08
Anticipated expiration: 2030-10-27

Abstract

The utility model provides a filter element, which comprises a shell, a mineralization part, a filter part and a bubble generator, wherein the shell is provided with a water inlet, a concentrated water outlet and a produced water outlet, the mineralization part and the filter part are sequentially arranged in the shell along the flowing direction of fluid, the air source of the bubble generator is carbon dioxide, and bubbles generated by the carbon dioxide flow into the shell from the water inlet and flow through the mineralization part; after being filtered by the filtering part, the fluid containing heavy metal flows out of the filter element from the concentrated water outlet, and the fluid not containing heavy metal flows out of the filter element from the water production outlet. The filtering part is used for filtering heavy metals and other impurities contained in the fluid flowing through the mineralization part, and the safety of the drinking water is improved. The gas in the bubbles reacts with calcium carbonate and the like in the mineralization part to form substances which can be dissolved in water, so that effective components containing minerals in the mineralization material are exposed, the dissolution rate of the minerals is improved, and the reactants and the products are safe components, thereby ensuring the safety of the dissolution process of the minerals.

Description

Filter element

Technical Field

The utility model relates to a water treatment purifies the field, in particular to filter core.

Background

With the increase of the safety awareness of consumers on drinking water, the consumers gradually change from drinking municipal tap water directly to drinking water which is processed by a water purifier and has higher safety. Common water purification machines in the market generally improve the safety of drinking water through reverse osmosis technology, but reverse osmosis technology can reduce beneficial mineral substances in water and reduce the health attribute of the drinking water, so that technicians develop a mineralized filter element to release mineral substances into the drinking water and improve the mineral content in the water. After water enters the mineralization filter element, microelements contained in the mineralization material in the mineralization filter element are released into the water, so that the mineral content of the drinking water is improved. However, the mineral dissolution rate of the mineralized filter element is slow, and the mineral content in water cannot be effectively improved in the contact time of the water and the mineralized filter element.

In the patent application with publication number CN109179802A, the mineral substances in the mineralized filter element are extracted by acidic water by means of water electrolysis, but the method belongs to a chemical method, and although the acidic water is neutralized with alkaline water at a later stage, chemical components are still changed in the process of extracting the mineral substances, so that certain potential safety hazards exist, and the use conditions of acid and alkali have higher requirements on corrosion resistance of materials, and the material cost is higher. In patent application publication No. CN110372074A, the release of minerals is promoted by incorporating active oxygen molecules in the mineralized filter elements. However, the active oxygen molecules have extremely strong oxidizability, and the method also belongs to a chemical method and has certain potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of how to rapidly and safely improve the dissolution rate of minerals in a mineralized filter element and provide a filter element.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

a filter element comprises a shell, wherein the shell is provided with a water inlet, a concentrated water outlet and a water production outlet along a fluid flow direction, the filter element further comprises a mineralization part, a filter part and a bubble generator, the mineralization part and the filter part are sequentially arranged inside the shell along the fluid flow direction, the bubble generator is arranged outside the shell and connected with the water inlet, a gas source of the bubble generator is carbon dioxide, bubbles generated by the bubble generator flow into the shell from the water inlet and flow through the mineralization part, and the filter part is used for filtering heavy metals in fluid flowing through the mineralization part; after being filtered by the filtering part, the fluid containing heavy metal flows out of the filter element from the concentrated water outlet, and the fluid not containing heavy metal flows out of the filter element from the water production outlet.

In the scheme, the mineralization part is used for releasing mineral substances into water, but the water flows through the mineralization part to carry away the mineral substances and simultaneously also to carry away part of heavy metals contained in the mineralization part, and the drinking water containing the heavy metals is harmful to health. The filtering part is arranged at the rear end of the fluid stroke relative to the mineralizing part, and can filter heavy metals and other impurities contained by the filtered water flowing through the mineralizing part, so that the safety of drinking water is improved. The impurity that filters off directly discharges the filter core from dense water export to avoid impurity to pile up in the inside of filter core for a long time and the filter house filtering capability that causes descends and the decline of filtration flux, thereby improve the filter effect and the speed of filter house and the life of filter house. The bubbles generated by the bubble generator improve the dissolution rate of minerals through the cavitation effect when flowing through the mineralization part, the mineralization material in the mineralization part is generally prepared by mixing materials containing minerals with calcium carbonate, magnesium carbonate and the like, the bubbles are broken due to the change of pressure in the contact process of the bubbles and the mineralization part, and the gas source of the bubbles is carbon dioxide, so the carbon dioxide in the bubbles can be released and reacts with the calcium carbonate, the magnesium carbonate and the like of the mineralization material to form calcium bicarbonate and magnesium bicarbonate which can be dissolved in water, thereby the effective components containing the minerals in the mineralization material are exposed, and the dissolution rate of the minerals is further improved. Although the dissolution rate of the mineral substances is improved by a chemical method, the safety of the whole reaction process is high, and the gas in the bubbles, calcium carbonate and magnesium carbonate which react with the gas in the mineralization part, and calcium bicarbonate and magnesium bicarbonate which are generated after the reaction are relatively safe components, so that the safety of the mineral substance dissolution process is ensured.

Preferably, the outside of the shell is further connected with a water inlet pipe, the water inlet pipe is communicated with the water inlet and the bubble generator, and fluid in the water inlet pipe is fused with bubbles generated by the bubble generator and then flows into the inside of the shell.

In the scheme, the arrangement enables the mineralization part area through which water flows to generate cavitation, and improves the mineral dissolution efficiency.

Preferably, the filter element further comprises a control unit, the control unit is electrically connected with the bubble generator, and the control unit is used for controlling the size of bubbles generated by the bubble generator.

In this scheme, the control unit can control the power of bubble generator, and then control the bubble size that bubble generator produced. The larger the bubbles are, the smaller the contact area between the bubbles and the mineralization part is, the lower the cavitation action of the bubbles is, and the lower the dissolution efficiency of the minerals is; the smaller the size of the bubbles, the larger the contact area between the bubbles and the mineralized portion, the higher the cavitation action of the bubbles, and the higher the dissolution efficiency of the minerals. When high-concentration mineral water is needed, the control unit increases the power of the bubble generator to enable the bubble generator to generate bubbles with smaller diameters; when low-concentration mineral water is needed, the control unit reduces the power of the bubble generator, so that the bubble generator generates bubbles with larger diameters.

Preferably, the diameter of the bubbles generated by the bubble generator is 10nm-10 μm.

In the scheme, the arrangement enables the bubbles to pass through gaps among the mineralized materials, and cavitation can be generated at the rear end of the mineralized part, so that the mineral dissolution rate at the rear end of the mineralized part is improved.

Preferably, the filter part comprises a first filter unit and a second filter unit, and the first filter unit separates the mineralization part from the second filter unit.

In this scheme, first filter unit is used for carrying out the prefilter to the water in the mineralized section for filter the great impurity such as granule in aquatic, second filter unit is used for filtering impurity such as heavy metal.

Preferably, the first filter unit is a net structure, and the material of the first filter unit is at least one of polypropylene, polyethylene, stainless steel or ceramic.

In this scheme, because first filter unit is used for filtering the great impurity of granule, consequently first filter unit can adopt the great structure in filter clearance.

Preferably, a first packaging adhesive layer is arranged inside the shell, the first packaging adhesive layer separates the concentrated water outlet from the water production outlet, the second filtering unit comprises a water purifying film, the water purifying film penetrates through the first packaging adhesive layer along the fluid flowing direction, and the filtering outlet of the water purifying film is communicated with the water production outlet.

In this scheme, first encapsulation glue film is used for preventing not directly to flow out the product water outlet and supply the consumer to drink by the filterable water of second filter unit, and the filterable water of second filter unit only can flow out from dense water outlet, and the filterable water of second filter unit flows out the product water outlet from the filtration export of water purification membrane.

Preferably, the first packaging adhesive layer is formed with a ventilation cavity, a second packaging adhesive layer for separating the concentrated water outlet from the water production outlet is arranged in the ventilation cavity, the second filtering unit further comprises a ventilation film, the ventilation film penetrates through the second packaging adhesive layer along the fluid flowing direction, the filtering outlet of the ventilation film is communicated with the water production outlet, and the ventilation film is used for allowing the bubbles generated by the bubble generator to pass through.

In this scheme, the second encapsulation glue film is used for preventing not through the filterable water of water purification membrane directly from ventilative chamber outflow product water export, because the water purification membrane can only filter the water, the unable water outlet that produces of water through water purification membrane outflow of bubble in aquatic. The above arrangement enables the bubbles to flow out of the water producing outlet through the gas permeable membrane to enable consumers to obtain drinking water containing the bubbles.

Preferably, the venting cavity can be switched between an open state and a closed state, and the filter element further comprises a plug which is matched with the venting cavity to close the venting cavity.

In the scheme, when the ventilating cavity is in an open state, bubbles can flow out of the water producing outlet through the ventilating film, and consumers can obtain drinking water containing the bubbles; when the ventilation cavity is in a closed state, the bubbles cannot flow out of the water producing outlet, and consumers obtain drinking water without bubbles.

Preferably, the housing includes a body, a front end cover and a rear end cover, the front end cover and the rear end cover are respectively connected to two sides of the body, the water inlet is disposed on the front end cover, the concentrated water outlet is disposed on the body, the produced water outlet is disposed on the rear end cover, and the mineralization part is accommodated in the front end cover.

In this scheme, provide the concrete structure of a case.

The utility model discloses an actively advance the effect and lie in: the mineralization part is used for releasing mineral substances into water, but the water flows through the mineralization part to carry away the mineral substances and simultaneously also to carry away part of heavy metals contained in the mineralization part, and consumers can cause harm to health when drinking water containing the heavy metals. The filtering part is arranged at the rear end of the fluid stroke relative to the mineralizing part, and can filter heavy metals and other impurities contained by the filtered water flowing through the mineralizing part, so that the safety of drinking water is improved. The impurity that filters off directly discharges the filter core from dense water export to avoid impurity to pile up in the inside of filter core for a long time and the filter house filtering capability that causes descends and the decline of filtration flux, thereby improve the filter effect and the speed of filter house and the life of filter house. The bubbles generated by the bubble generator improve the dissolution rate of minerals through the cavitation effect when flowing through the mineralization part, the mineralization material in the mineralization part is generally prepared by mixing materials containing minerals with calcium carbonate, magnesium carbonate and the like, the bubbles are broken due to the change of pressure in the contact process of the bubbles and the mineralization part, and the gas source of the bubbles is carbon dioxide, so the carbon dioxide in the bubbles can be released and reacts with the calcium carbonate, the magnesium carbonate and the like of the mineralization material to form calcium bicarbonate and magnesium bicarbonate which can be dissolved in water, thereby the effective components containing the minerals in the mineralization material are exposed, and the dissolution rate of the minerals is further improved. Although the dissolution rate of the mineral substances is improved by a chemical method, the safety of the whole reaction process is high, and the gas in the bubbles, calcium carbonate and magnesium carbonate which react with the gas in the mineralization part, and calcium bicarbonate and magnesium bicarbonate which are generated after the reaction are relatively safe components, so that the safety of the mineral substance dissolution process is ensured.

Drawings

Fig. 1 is a schematic sectional structure view of a filter element in an open state of a ventilation cavity according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a filter cartridge including a bubble generator according to an embodiment of the present invention.

Fig. 3 is a schematic sectional view of a filter element according to an embodiment of the present invention, in which a ventilation cavity is closed.

Description of reference numerals:

housing 1

Front end cap 11

Body 12

Rear end cap 13

The water inlet 14

Concentrated water outlet 15

Water production outlet 16

Mineralization part 2

Filter part 3

First filter unit 31

Second filter unit 32

Water purification membrane 321

Breathable film 322

Bubble generator 4

Water inlet pipe 5

First packaging adhesive layer 61

Second encapsulation glue layer 62

Ventilation cavity 7

Plug 81

Pull rod 82

Sealing structure 83

Detailed Description

The present invention will be more clearly and completely described below with reference to the accompanying drawings.

The utility model provides a filter element, which is used for adding mineral substances into drinking water and filtering impurities in the drinking water. As shown in fig. 1-3, the filter element comprises a housing 1, a mineralization part 2, a filtration part 3 and a bubble generator 4.

Along the fluid flow direction, the shell 1 sequentially comprises a front end cover 11, a body 12 and a rear end cover 13, the front end cover 11 and the rear end cover 13 are respectively connected to the front end of the body 12 and the rear end of the body 12 along the fluid flow direction, a water inlet 14 is arranged on the front end cover 11, a concentrated water outlet 15 is arranged on the body 12, and a water production outlet 16 is arranged on the rear end cover 13. Untreated raw water enters the inside of the filter element from the water inlet 14, the filtered residual concentrated water containing impurities is discharged from the concentrated water outlet 15, and purified water which is added with minerals and can be drunk after filtering flows out from the water production outlet 16. The front and back in the present embodiment are based on the fluid flow direction, the fluid flows through the front and the back first, and the fluid flow direction is shown by the arrow in fig. 1.

The mineralization part 2 is arranged in the shell 1 and is accommodated in the front end cover 11, the mineralization in the embodiment is a granular structure made by mixing a material containing minerals with calcium carbonate and magnesium carbonate, and gaps for water to flow are formed between the mineralization parts 2. The mineral-containing material may be at least one of Maifanitum, secondary quartzite, feldspar and quartz sandstone, rhodochrosite, zeolite, activated carbon granule, and activated carbon fiber. In the contact process of the raw water and the mineralization part 2, the mineralization part 2 releases mineral substances into the raw water, and the mineral substance content of the raw water is improved.

As shown in fig. 2, a water inlet pipe 5 and a bubble generator 4 are connected to the outside of the housing 1, and the water inlet pipe 5, the bubble generator 4 and the water inlet 14 are connected and communicated with each other. The inlet tube 5 and the bubble generator 4 are communicated firstly, the raw water in the inlet tube 5 and the bubbles generated by the bubble generator 4 are fused and then flow into the shell 1 from the water inlet 14, and the air source of the bubbles generated by the bubble generator 4 is carbon dioxide in the embodiment. Since the mineralization part 2 is adjacent to the water inlet 14, the raw water with the fused bubbles directly flows through the mineralization part 2 and comes into contact with the mineralization part 2.

The bubbles generated by the bubble generator 4 increase the dissolution rate of minerals by cavitation when flowing through the mineralization part 2. Specifically, in the process that the bubbles are in contact with the mineralization part 2, the bubbles are broken due to the change of pressure, and the gas source of the bubbles is carbon dioxide, so that the carbon dioxide in the bubbles is released and reacts with calcium carbonate and magnesium carbonate of the mineralization material to form calcium bicarbonate and magnesium bicarbonate which can be dissolved in water, the calcium bicarbonate and the magnesium bicarbonate are dissolved in raw water, and effective components containing minerals in the mineralization part 2 are exposed, so that the extraction effect of the raw water on the mineralization part 2 is enhanced, the rapid dissolution of the minerals in the mineralization part 2 is promoted, and the dissolution rate of the minerals is improved. Compared with the case that the effective components containing the minerals are coated by calcium carbonate and magnesium carbonate, the dissolution rate of the minerals is greatly increased.

Although the present example also improves the dissolution rate of minerals by the chemical reaction between carbon dioxide and calcium carbonate and magnesium carbonate, the safety of the whole reaction process is high, and both carbon dioxide, calcium carbonate and magnesium carbonate as reactants and calcium bicarbonate and magnesium bicarbonate as products are relatively safe components, so that the safety of the mineral dissolution process can be ensured. And calcium bicarbonate and magnesium bicarbonate are important components in mineral water and can meet the requirements of human bodies, so that the calcium bicarbonate and the magnesium bicarbonate cannot pollute raw water even if dissolved in the raw water.

Since the raw water is fused with the bubbles and then flows into the mineralization part 2, cavitation is generated in the area of the mineralization part 2 where the raw water containing bubbles flows, and the mineral dissolution efficiency and the utilization rate of the mineralization part 2 are improved.

The bubbles generated by the bubble generator 4 in this embodiment are micro-nano bubbles, the diameter of which is between 10nm and 10 μm, and the bubbles with smaller size are designed to pass through the gaps between the mineralization parts 2, so that the bubbles can generate cavitation at the front end of the mineralization part 2 to accelerate the dissolution rate of minerals, and can also generate cavitation at the rear end of the mineralization part 2. The larger the bubbles are, the smaller the contact area between the bubbles and the mineralization part 2 is, the lower the cavitation action of the bubbles is, and the lower the dissolution efficiency of the minerals is; the smaller the size of the bubbles, the larger the contact area between the bubbles and the mineralizer 2, the higher the cavitation action of the bubbles, and the higher the mineral elution efficiency.

Preferably, the filter element further comprises a control unit (not shown in the figure), which is electrically connected to the bubble generator 4 and is used for controlling the size of the bubbles generated by the bubble generator 4 by controlling the efficiency of the bubble generator 4, wherein the higher the efficiency of the bubble generator 4 is, the smaller the bubbles generated by the bubble generator 4 are. Therefore, when high-concentration mineral water is needed, the power of the bubble generator 4 can be increased through the control unit, so that the bubble generator 4 generates bubbles with smaller diameters; when low-concentration mineral water is needed, the power of the bubble generator 4 can be adjusted down by the control unit, so that the bubble generator 4 generates bubbles with larger diameters.

The filter part 3 is arranged inside the casing 1 and is located downstream of the fluid relative to the mineralization part 2, the filter part 3 comprises a first filter unit 31 and a second filter unit 32, and the first filter unit 31 separates the mineralization part 2 from the second filter unit 32.

The first filtering unit 31 is used for primary filtering of raw water in the mineralization part 2, and is mainly used for filtering larger impurities such as particles in the raw water. Since the first filter unit 31 is used for filtering impurities with large particles, the first filter unit 31 may adopt a structure with a large filter gap, such as a net structure, and the material of the structure may be at least one of polypropylene, polyethylene, stainless steel or ceramic.

The second filtering unit 32 includes a water purifying membrane 321, and the water purifying membrane 321 is used for filtering impurities such as heavy metals in the raw water. Since most of the materials containing minerals in the mineralization part 2 are natural ores, in the process of contacting the raw water with the mineralization part 2, the minerals can be added, and heavy metals are doped, so that the health of consumers is affected. The water purifying film 321 is disposed at the rear end of the water stroke relative to the mineralization part 2, and is used for filtering heavy metals and other impurities generated by the water flowing through the mineralization part 2, so as to improve the safety of the drinking water. The water purification membrane 321 in this embodiment utilizes membrane chromatography technology, and can retain minerals in raw water while efficiently adsorbing heavy metals, so as to play a role in purifying water. The filtering material in the water purification membrane 321 may be at least one of hollow fiber, flat membrane, and resin particle.

A first packaging adhesive layer 61 is arranged in the shell 1, the first packaging adhesive layer 61 separates the concentrated water outlet 15 and the produced water outlet 16, the water purification membrane 321 penetrates through the first packaging adhesive layer 61 in the fluid flowing direction, and the filtering outlet of the water purification membrane 321 is communicated with the produced water outlet 16. The first encapsulating adhesive layer 61 is used for preventing raw water which is not filtered by the water purifying film 321 and still contains impurities such as heavy metals from directly flowing out from the water production outlet 16 for drinking of consumers, raw water which is not filtered by the water purifying film 321 and still contains impurities such as heavy metals can only be used as concentrated water and discharged to the outside of the filter element from the concentrated water outlet 15, raw water which is filtered by the water purifying film 321 and does not contain impurities such as heavy metals flows out from the filtering outlet of the water purifying film 321 and flows out from the water production outlet 16 as purified water for drinking of consumers. The filtered impurities are directly discharged from the concentrated water outlet 15 out of the filter element, so that the reduction of the filtering function and the reduction of the filtering flux of the filtering part 3 caused by the impurities accumulated in the filter element for a long time are avoided, and the filtering effect and the filtering speed of the filtering part 3 and the service life of the filtering part are improved.

The middle part of the first packaging adhesive layer 61 is formed with a ventilation cavity 7, and two ends of the ventilation cavity 7 along the fluid flowing direction penetrate through the first packaging adhesive layer 61. A second packaging adhesive layer 62 is arranged in the ventilation cavity 7, and the second packaging adhesive layer 62 is also used for separating the concentrated water outlet 15 from the produced water outlet 16, so that raw water which is not filtered by the water purification film 321 is prevented from directly flowing out of the produced water outlet 16 from the ventilation cavity 7. The second filtering unit 32 further comprises a gas-permeable membrane 322, the gas-permeable membrane 322 penetrates through the second packaging adhesive layer 62 along the fluid flowing direction, and a filtering outlet of the gas-permeable membrane 322 is communicated with the water production outlet 16. Since the water purifying membrane 321 can only pass water but not air bubbles, so that a consumer cannot wait for drinking water containing air bubbles, the air permeable membrane 322 is used to allow air bubbles to flow out of the water producing outlet 16 through the air permeable membrane 322 so that the consumer can obtain drinking water containing air bubbles. The material of the breathable film 322 can be at least one of polyvinylidene fluoride, polyvinyl chloride, polyether sulfone, polysulfone and polyacrylonitrile.

The bubbles serve to clean the mineralization part 2 and the filtration part 3, in addition to increasing the dissolution rate of the minerals. The bubbles flow through the surfaces of the mineralization part 2, the water purification membrane 321 and the breathable membrane 322, and can take away pollutants such as particles, colloid and the like attached to the mineralization part 2, the water purification membrane 321 and the breathable membrane 322, so that the fluid fusion flux of the mineralization part 2 and the filter part 3 is improved, and the service life of the filter element is prolonged.

The cartridge further comprises a plug 81, the plug 81 being movable with respect to the casing 1 to open or close the venting chamber 7. Fig. 1 shows the state in which the ventilating chamber 7 is opened, and the stopper 81 is located outside the ventilating chamber 7, and air bubbles can be filtered out through the filtering outlet of the ventilating membrane 322 and flow into the purified water located at the water producing outlet 16 side via the ventilating chamber 7, thereby enabling consumers to obtain drinking water containing air bubbles. Fig. 3 shows the ventilation chamber 7 in a closed state, with the plug 81 engaging the ventilation chamber 7, the plug 81 being snapped into the ventilation chamber 7 to close the ventilation chamber 7. When the ventilating cavity 7 is closed, the bubbles can not flow out of the water producing outlet 16, and the consumers can obtain drinking water without bubbles.

Preferably, a pull rod 82 is connected to the plug 81, one end of the pull rod 82 is connected to the plug 81, and the other end of the pull rod 82 extends to the outside of the housing 1, so that the open state and the closed state of the ventilation chamber 7 can be switched in a state where the filter cartridge is not opened.

Preferably, the side of the plug 81 contacting the air permeable chamber 7 is provided with a sealing structure 83, and the sealing structure 83 is used for preventing raw water which is not filtered by the water purification membrane 321 from flowing from the air permeable chamber 7 to the water production outlet 16.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. A filter element comprises a shell, wherein the shell is provided with a water inlet, a concentrated water outlet and a produced water outlet along a fluid flow direction, and the filter element is characterized by further comprising a mineralization part, a filter part and a bubble generator, the mineralization part and the filter part are sequentially arranged inside the shell along the fluid flow direction, the bubble generator is arranged outside the shell and connected with the water inlet, a gas source of the bubble generator is carbon dioxide, bubbles generated by the bubble generator flow into the inside of the shell from the water inlet and flow through the mineralization part, and the filter part is used for filtering heavy metals in fluid flowing through the mineralization part; after being filtered by the filtering part, the fluid containing heavy metal flows out of the filter element from the concentrated water outlet, and the fluid not containing heavy metal flows out of the filter element from the water production outlet.

2. The filter cartridge according to claim 1, wherein a water inlet pipe is further connected to the outside of the housing, the water inlet pipe is communicated with the water inlet and the bubble generator, and the fluid in the water inlet pipe is merged with the bubbles generated by the bubble generator and then flows into the inside of the housing.

3. The filter cartridge of claim 1, further comprising a control unit electrically connected to the bubble generator, the control unit for controlling the size of bubbles generated by the bubble generator.

4. The filter cartridge of claim 1, wherein the bubble generator generates bubbles having a diameter of 10nm to 10 μm.

5. The filter cartridge of claim 1, wherein the filter section comprises a first filter element and a second filter element, the first filter element separating the mineralization section and the second filter element.

6. The filter element of claim 5, wherein a first packaging glue layer is arranged inside the shell, the first packaging glue layer separates the concentrated water outlet from the produced water outlet, the second filtering unit comprises a water purifying film, the water purifying film penetrates through the first packaging glue layer along the fluid flowing direction, and the filtering outlet of the water purifying film is communicated with the produced water outlet.

7. The filter element according to claim 6, wherein the first packaging adhesive layer is formed with a gas permeable cavity, a second packaging adhesive layer for separating the concentrated water outlet from the water production outlet is arranged in the gas permeable cavity, the second filter unit further comprises a gas permeable membrane, the gas permeable membrane penetrates through the second packaging adhesive layer along the fluid flow direction, the filter outlet of the gas permeable membrane is communicated with the water production outlet, and the gas permeable membrane is used for allowing the bubbles generated by the bubble generator to pass through.

8. The filter cartridge of claim 7, wherein the venting chamber is switchable between an open state and a closed state, the filter cartridge further comprising a plug that cooperates with the venting chamber to close the venting chamber.

9. The filter cartridge according to any one of claims 1 to 8, wherein the housing comprises a body, a front end cap and a rear end cap, the front end cap and the rear end cap being connected to both sides of the body, respectively, the water inlet being provided on the front end cap, the concentrate outlet being provided on the body, the product outlet being provided on the rear end cap, the mineralizing portion being accommodated in the front end cap.