CN211886280U - Compound filter element group spare and water purification system - Google Patents

Compound filter element group spare and water purification system Download PDF

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Publication number
CN211886280U
CN211886280U CN202020186724.0U CN202020186724U CN211886280U CN 211886280 U CN211886280 U CN 211886280U CN 202020186724 U CN202020186724 U CN 202020186724U CN 211886280 U CN211886280 U CN 211886280U
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China
Prior art keywords
filter element
membrane
element assembly
composite filter
central tube
Prior art date
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CN202020186724.0U
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Chinese (zh)
Inventor
孔艳
吴紫阳
张长春
高威
李友铃
申鸿海
李见
钟小榛
李叶松
叶英东
董情
张梦轩
王映涵
李援开
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN201910713454 priority
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10Supported membranes; Membrane supports
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D63/00Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/10Spiral-wound membrane modules
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2311/00Details relating to membrane separation process operations and control
    • B01D2311/26Further operations combined with membrane separation processes
    • B01D2311/2649Filtration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2313/00Details relating to membrane modules or apparatus
    • B01D2313/08Flow guidance means within the module or the apparatus
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/002Construction details of the apparatus

Abstract

The utility model provides a composite filter element assembly and a water purification system, which comprises a central tube (1), wherein the central tube (1) is made of a material which can allow the fluid to circulate; further comprising a fine treatment cartridge (2), the fine treatment cartridge (2) comprising at least one of a nanofiltration membrane (21) and a chromatography membrane (22); the fine treatment filter element (2) is wound on the periphery of the central tube (1). Through the utility model discloses can effectively filter the heavy metal, remain partial beneficial mineral substance to and the realization is held back and is heavily metallic ion's absorption to the filtration of particle impurity, consequently adopts the technical scheme who receives and strains + chromatographic membrane, can also see through profitable mineral substance ion or element when can reaching reasonable filterable technological effect, makes to be more healthy as the drinking water to the human body after it filters.

Description

Compound filter element group spare and water purification system
Technical Field
The utility model belongs to the technical field of the water purification, concretely relates to compound filter element group spare and water purification system.
Background
The prior composite filter element mostly adopts the arrangement mode of a front filter element and RO plus a rear filter element, the RO membrane can filter all heavy metals and the like, but also filters out trace elements (such as calcium ions, magnesium ions and the like) beneficial to health, so that an additional filter element needs to be found to replace the RO filter element, and impurities are filtered more reasonably.
The filter element integration technology is a way of well realizing the small volume of the water purifier, and the composite filter element has the advantages that one filter element can replace a multi-stage filter element of the traditional water purifier to play a purifying function, so that the whole volume is reduced, and the core replacement frequency is reduced. And the composite filter element on the market is integral type, need change the whole change of filter flask when changing the filter core, this waste that just faces the cost, and composite filter element's single compound mode can't satisfy the different water quality requirement in different areas in addition.
Because the RO membrane among the composite filter element among the prior art also filters useful healthy microelement (for example calcium ion, magnesium ion etc.) when filtering heavy metal etc. simultaneously, leads to effectively not keeping useful ion, consequently the utility model discloses research designs a composite filter element group spare and water purification system.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming RO membrane in the composite filter element among the prior art and also filtering beneficial healthy microelement (for example calcium ion, magnesium ion etc.) when filtering heavy metal etc. defect such as fall to provide a composite filter element group spare and water purification system.
The utility model provides a compound filter element group spare, it includes:
the central pipe is made of a material capable of allowing fluid to flow; the device also comprises a fine treatment filter element, wherein the fine treatment filter element comprises at least one of a nanofiltration membrane and a chromatographic membrane; the fine treatment filter element is wound on the periphery of the central tube.
Preferably, the first and second electrodes are formed of a metal,
the nanofiltration membrane is sleeved on the periphery of the chromatographic membrane.
Preferably, the first and second electrodes are formed of a metal,
the radial inner side of the central tube is also provided with a supporting framework.
Preferably, the first and second electrodes are formed of a metal,
the filter material that can allow the fluid to pass through includes: at least one of a carbon material, a polypropylene pp material, and a ceramic material.
Preferably, the first and second electrodes are formed of a metal,
the central tube is of a cylindrical carbon rod structure consisting of the carbon material; or the central pipe is of a cylindrical PP structure made of the polypropylene PP material; or the central tube is of a cylindrical ceramic tube structure made of the ceramic material.
Preferably, the first and second electrodes are formed of a metal,
the fine treatment filter element is positioned between the pretreatment filter element and the post-treatment filter element along the flowing direction of the fluid.
Preferably, the first and second electrodes are formed of a metal,
the pretreatment filter element comprises a first-stage pretreatment filter element and a second-stage pretreatment filter element; and/or the aftertreatment cartridge comprises a second activated carbon structure and an ultrafiltration membrane.
Preferably, the first and second electrodes are formed of a metal,
the first-stage pretreatment filter element comprises a PP cotton filter element; and/or the second stage pretreatment cartridge comprises a first activated carbon structure.
Preferably, the first and second electrodes are formed of a metal,
the first active carbon structure is soft paper-shaped and is rolled into a cylinder shape, and the composite filter element assembly further comprises a framework which is arranged on the radial inner side of the cylindrical active carbon structure.
The utility model also provides a water purification system, it includes preceding arbitrary compound filter element group spare.
The utility model provides a pair of compound filter element group spare and water purification system has following beneficial effect:
the utility model discloses a with the technical scheme who receives filter + chromatographic membrane and replace the RO filter core, receive filter and can effectively filter the heavy metal, remain the beneficial mineral substance of part, the chromatographic membrane can realize holding back and adsorbing heavy metal ion to the filtration of particle impurity, consequently adopts the technical scheme who receives filter + chromatographic membrane, can also see through profitable mineral substance ion or element when can reaching reasonable filterable technological effect for it filters the back as the drinking water more healthy to the human body through it.
Drawings
Fig. 1 is a schematic view of the internal structure of the composite filter element assembly of the present invention.
The reference numbers in the figures denote:
1. a central tube; 11. a support framework; 2. finely processing the filter element; 21. a nanofiltration membrane; 22. a chromatographic membrane; 3. pretreating a filter element; 31. a first stage pretreatment filter element; 32. a second stage pre-treatment filter element; 4. post-treatment of the filter element; 41. a second activated carbon structure; 42. and (3) an ultrafiltration membrane.
Detailed Description
As shown in fig. 1, the present invention provides a composite filter element assembly, comprising:
the central pipe 1 is made of a material which can allow fluid to flow through; the device also comprises a fine treatment filter element 2, wherein the fine treatment filter element 2 comprises at least one of a nanofiltration membrane 21 and a chromatographic membrane 22; the fine treatment filter element 2 is wound on the periphery of the central tube 1.
The utility model discloses a replace the technical scheme of prior art's RO filter core with receiving and straining + chromatographic membrane, receive and strain and can effectively filter the heavy metal, remain the beneficial mineral substance of part, the chromatographic membrane can realize holding back and heavy metal ion's absorption to the filtration of particle impurity, consequently adopts the technical scheme who receives and strains + chromatographic membrane, can also see through profitable mineral substance ion or element when can reaching reasonable filterable technological effect for it is more healthy to the human body as the drinking water after filtering.
Preferably, the first and second electrodes are formed of a metal,
the nanofiltration membrane 21 is sleeved on the periphery of the chromatographic membrane 22. This is the utility model discloses an interrelation between receive filter membrane and the chromatographic membrane, outside, the chromatographic membrane that locate the chromatographic membrane through receiving the filter membrane cover are located the inside of receiving the filter membrane for fluid is earlier filtered through receiving the filter membrane, is filtered through the chromatographic membrane again, and then is further filtered in getting into the center tube.
Preferably, the first and second electrodes are formed of a metal,
the radial inner side of the central tube 1 is also provided with a support framework 11. The support framework can effectively support the central tube, even the nanofiltration membrane and the chromatographic membrane.
Preferably, the first and second electrodes are formed of a metal,
the filter material that can allow the fluid to pass through includes: at least one of a carbon material, a polypropylene pp material, and a ceramic material. This is the utility model discloses an effective passing through of allowable water can be realized to the preferred material of filter media material, can also carry out the filter action to the water through it in addition, can also form the filter effect of one-level when realizing the support function with the center tube, has overcome because the defect of the volume increase that the filter core progression increases and bring, reduces the volume, saves the cost.
Preferably, the first and second electrodes are formed of a metal,
the central tube 1 is of a cylindrical carbon rod structure made of the carbon material; or the central pipe 1 is in a cylindrical PP structure formed by the polypropylene PP material; or, the central tube 1 is a cylindrical ceramic tube structure made of the ceramic material. The utility model discloses can allow the filter media that fluid passed through can include: carbon rods, cylindrical polypropylene pp material filter materials, ceramic tubes and the like are preferably used for improving the taste of carbon as the material of the central tube of the roll-type membrane element, so that the plastic central tube used by the existing roll-type membrane can be abandoned, the use of the plastic central tube of the existing roll-type membrane element is avoided, and one membrane element can have two-stage filtering functions; the carbonaceous central tube is utilized, so that the subsequent reuse of the taste filter element can be avoided, and the membrane element integrates two-stage filtering functions of a fine treatment filter element and a rear taste filter element; the carbonaceous central tube does not have macroscopic macropore, and its surface is covered with structural micropore, compares in the visual macroporous central tube of traditional working of plastics, and roll-type diaphragm produced water is collected more easily. The PP cylindrical central tube can effectively remove various particle impurities in the filtered liquid, has a multilayer depth structure, large pollutant carrying capacity, large filtering flow, small pressure difference, no chemical adhesive, higher sanitation, higher safety, acid resistance, alkali resistance, organic solution and oil resistance, good chemical stability and integration of surface, deep layer and coarse and fine filtering; has the characteristics of large flow, corrosion resistance, high pressure resistance, low cost and the like. Used for blocking large granular substances such as rust, silt, worm eggs and the like in water. The ceramic tube-shape center tube can filter, antibiotic and activation treatment drinking water, harmful removal chlorine residue and suspended pollutant, organic chemical substance, colour and peculiar smell, can filter out the drinking water that reaches certain drinking standard through using this filter core.
Preferably, the first and second electrodes are formed of a metal,
the device also comprises a pretreatment filter element 3 and a post-treatment filter element 4, wherein the fine treatment filter element 2 is positioned between the pretreatment filter element 3 and the post-treatment filter element 4 along the flowing direction of the fluid. This is the utility model discloses a further preferred structural style of compound filter element group spare can carry out the preliminary treatment to water through the preliminary treatment filter core and purify, gets rid of large granule impurity such as silt, and impurity such as heavy metal can be got rid of to the meticulous processing filter core, and the taste that the aftertreatment filter core can improve water, carries out further filtering action, and when compound filter element performance purification performance, water obtains purifying water through preliminary treatment filter core 3, meticulous processing filter core 2 and aftertreatment filter core 4 in proper order. The three-stage modularized filter element can be configured in different combination modes according to the local water quality requirement. The cartridge module can be removed for cleaning or replacement.
Preferably, the first and second electrodes are formed of a metal,
the pretreatment filter element 3 comprises a first stage pretreatment filter element 31 and a second stage pretreatment filter element 32; and/or, the post-treatment cartridge 4 comprises a second activated carbon structure 41 and an ultrafiltration membrane 42. This is the utility model discloses a taste and degerming effect can be improved to water through second active carbon structure and milipore filter to the preferred structural style of preliminary treatment filter core and aftertreatment filter core, and first order preliminary treatment filter core and second level preliminary treatment filter core can play the effect of getting rid of big granule such as silt, suspended solid respectively and effect such as dechlorination.
Preferably, the first and second electrodes are formed of a metal,
the first stage pretreatment cartridge 31 comprises a PP cotton cartridge; and/or the second stage pretreatment cartridge 32 comprises a first activated carbon structure. Can play the effect of getting rid of big granules such as silt, suspended solid through the cotton filter core of PP, can play effects such as dechlorination through first active carbon structure.
Preferably, the first and second electrodes are formed of a metal,
the first active carbon structure is soft paper-shaped and is rolled into a cylinder shape, and the composite filter element assembly further comprises a framework which is arranged on the radial inner side of the first active carbon structure in the cylinder shape. This is the utility model discloses a preferred structural style of first active carbon structure in the preliminary treatment filter core can form the supporting role to this reel active carbon structure through reel form and the skeleton that sets up in its inboard, improves purifying effect.
The utility model also provides a water purification system, it includes preceding arbitrary compound filter element group spare.
Because the RO filter element in the traditional composite filter element filters all mineral substances, but also filters and removes the good mineral substances of human body, the healthy and beneficial mineral substances can not be obtained in the drinking water of human body. Therefore, the utility model provides a pair of with receive and strain + chromatographic column and replace the technical scheme of RO filter core, can effective filtration heavy metal, remain partial beneficial mineral substance to reach reasonable filterable technological effect.
The composite filter element of the utility model comprises a preposed filter element (a pretreatment filter element), a nanofiltration membrane (a fine filter element) and a postposition filter element. The preposed filter element is as follows: the first-stage filter element is used for primary filtration and activated carbon fiber filter element filtration, and the PP filter element is used for pretreating the entering tap water and filtering silt, suspended matters, colloid and impurities in the water. The active carbon filter element is used for removing substances harmful to human bodies, such as heterochrosis, peculiar smell, residual chlorine, RouHua hydrogen and organic matters, and can be used for removing pollutants with the size of more than 10 microns. The active carbon fiber is soft paper-shaped, is rolled into a cylinder shape, is supported by the framework, and can increase the paper folding amount compared with paper folding and carbon rod matching in the delayed performance requirement, and the dirt holding amount is better.
The second-stage filter element is a nanofiltration membrane and a chromatographic membrane, the size of substances permeating the nanofiltration membrane is about 1-10nn, bacteria, viruses, metal ions and low-molecular organic matters can be effectively removed, and a certain amount of mineral substances which are beneficial to human bodies, such as potassium, sodium, calcium and iron, are reserved. The chromatographic membrane has larger water flux under lower driving pressure, and the removal efficiency of the nanofiltration membrane is greatly improved. Therefore, the conventional mineral ions can be retained and the heavy metal ions can be removed in the water purification process.
The third stage filter core is a post-positioned filter core, is a filter core made of a composite carbon material with a degerming function, and can be a silver-loaded activated carbon filter core. The water purifier is used for improving the water production taste (through carbon) and sterilizing (through silver), two-stage filtration is realized through one filter element, and the size of the filter element assembly and even the water purifier can be further reduced.
The front filter element can also be used for filtering a PP filter element, an active carbon filter element and a PP filter element, and then a layer of PP filter element is added for filtering so as to further filter suspended matters, colloid, impurities and the like in water. The water quality of the packed and filtered water meets the water quality requirement of the inlet water of the nanofiltration membrane. The activated carbon may also be a carbon rod.
The nanofiltration membrane can be an organic nanofiltration membrane or a ceramic nanofiltration membrane, and compared with the organic nanofiltration membrane, the ceramic nanofiltration membrane has the advantages of chemical stability, acid and alkali resistance, organic solvent resistance, bacteria resistance, high temperature resistance, pollution resistance, high mechanical strength, good regeneration performance, simple separation process, low energy consumption, simple and convenient operation and maintenance, long service life and the like, but the ceramic nanofiltration membrane and the processing difficulty and the cost are higher.
The post-filter element can also be activated carbon rod plus ultrafiltration/microfiltration, and the ultrafiltration can further sterilize and inhibit bacteria. To make the drinking water healthier.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A composite filter element assembly, comprising: the method comprises the following steps:
the central pipe (1), the central pipe (1) is made of a material which can allow fluid to flow through; further comprising a fine treatment cartridge (2), the fine treatment cartridge (2) comprising at least one of a nanofiltration membrane (21) and a chromatography membrane (22); the fine treatment filter element (2) is wound on the periphery of the central tube (1).
2. The composite filter element assembly of claim 1, wherein:
the nanofiltration membrane (21) is sleeved on the periphery of the chromatographic membrane (22).
3. The composite filter element assembly of claim 1, wherein:
the radial inner side of the central pipe (1) is also provided with a supporting framework (11).
4. The composite filter element assembly according to any one of claims 1-3, wherein:
the filter material that can allow the fluid circulation includes: at least one of a carbon material, a polypropylene pp material, and a ceramic material.
5. The composite filter element assembly of claim 4, wherein:
the central tube (1) is of a cylindrical carbon rod structure consisting of the carbon material; or the central pipe (1) is of a cylindrical PP structure made of the polypropylene PP material; or the central tube (1) is a cylindrical ceramic tube structure made of the ceramic material.
6. The composite filter element assembly according to any one of claims 1-3, wherein:
the device also comprises a pretreatment filter element (3) and a post-treatment filter element (4), wherein the fine treatment filter element (2) is positioned between the pretreatment filter element (3) and the post-treatment filter element (4) along the flowing direction of the fluid.
7. The composite filter element assembly of claim 6, wherein:
the pretreatment filter element (3) comprises a first stage pretreatment filter element (31) and a second stage pretreatment filter element (32); and/or the post-treatment cartridge (4) comprises a second activated carbon structure (41) and an ultrafiltration membrane (42).
8. The composite filter element assembly of claim 7, wherein:
the first stage pretreatment filter element (31) comprises a PP cotton filter element; and/or the second stage pretreatment cartridge (32) comprises a first activated carbon structure.
9. The composite filter element assembly of claim 8, wherein:
the first active carbon structure is soft paper-shaped and is rolled into a cylinder shape, and the composite filter element assembly further comprises a framework which is arranged on the radial inner side of the first active carbon structure in the cylinder shape.
10. A water purification system, its characterized in that: comprising the composite filter element assembly of any of claims 1-9.
CN202020186724.0U 2019-08-02 2020-02-19 Compound filter element group spare and water purification system Active CN211886280U (en)

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CN201910713454 2019-08-02

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CN202020186746.7U Active CN211886281U (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202010103151.5A Pending CN111229054A (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202020187695.XU Active CN211886283U (en) 2019-08-02 2020-02-19 Central tube for roll type membrane, roll type membrane component and water purification system
CN202010103186.9A Pending CN111229056A (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202010103189.2A Pending CN111185097A (en) 2019-08-02 2020-02-19 Roll up formula membrane module, compound filter element group spare and water purification system
CN202020187694.5U Active CN211886282U (en) 2019-08-02 2020-02-19 Spiral wound membrane module and water purification system
CN202010105792.4A Pending CN111185101A (en) 2019-08-02 2020-02-19 Water purification unit with filter element group spare
CN202020186723.6U Active CN211886279U (en) 2019-08-02 2020-02-19 Roll up formula membrane module, compound filter element group spare and water purification system
CN202010103364.8A Pending CN111185099A (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202020191911.8U Active CN211886284U (en) 2019-08-02 2020-02-19 Purifier filter core center tube, spiral wound membrane module and compound filter core subassembly
CN202020186721.7U Active CN211886277U (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202010103366.7A Pending CN111185100A (en) 2019-08-02 2020-02-19 Central tube for roll type membrane, roll type membrane component and water purification system
CN202010105862.6A Pending CN112295417A (en) 2019-08-02 2020-02-19 Central tube for roll type membrane, roll type membrane component and water purification system
CN202020186748.6U Active CN212091725U (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202010105797.7A Pending CN111318175A (en) 2019-08-02 2020-02-19 Spiral wound membrane module and water purification system
CN202020186722.1U Active CN211886278U (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202020186724.0U Active CN211886280U (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202010103362.9A Pending CN111185098A (en) 2019-08-02 2020-02-19 Purifier filter core center tube, spiral wound membrane module and compound filter core subassembly
CN202020186747.1U Active CN212091724U (en) 2019-08-02 2020-02-19 Water purification unit with filter element group spare
CN202010103369.0A Pending CN111229057A (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202010103184.XA Pending CN111185096A (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202020187693.0U Active CN212142159U (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202020191957.XU Active CN211886285U (en) 2019-08-02 2020-02-19 Spiral wound membrane module and water purification system
CN202010105864.5A Pending CN111185102A (en) 2019-08-02 2020-02-19 Spiral wound membrane module and water purification system
CN202010103163.8A Pending CN111229055A (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system

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CN202020186746.7U Active CN211886281U (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202010103151.5A Pending CN111229054A (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202020187695.XU Active CN211886283U (en) 2019-08-02 2020-02-19 Central tube for roll type membrane, roll type membrane component and water purification system
CN202010103186.9A Pending CN111229056A (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202010103189.2A Pending CN111185097A (en) 2019-08-02 2020-02-19 Roll up formula membrane module, compound filter element group spare and water purification system
CN202020187694.5U Active CN211886282U (en) 2019-08-02 2020-02-19 Spiral wound membrane module and water purification system
CN202010105792.4A Pending CN111185101A (en) 2019-08-02 2020-02-19 Water purification unit with filter element group spare
CN202020186723.6U Active CN211886279U (en) 2019-08-02 2020-02-19 Roll up formula membrane module, compound filter element group spare and water purification system
CN202010103364.8A Pending CN111185099A (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202020191911.8U Active CN211886284U (en) 2019-08-02 2020-02-19 Purifier filter core center tube, spiral wound membrane module and compound filter core subassembly
CN202020186721.7U Active CN211886277U (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202010103366.7A Pending CN111185100A (en) 2019-08-02 2020-02-19 Central tube for roll type membrane, roll type membrane component and water purification system
CN202010105862.6A Pending CN112295417A (en) 2019-08-02 2020-02-19 Central tube for roll type membrane, roll type membrane component and water purification system
CN202020186748.6U Active CN212091725U (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202010105797.7A Pending CN111318175A (en) 2019-08-02 2020-02-19 Spiral wound membrane module and water purification system
CN202020186722.1U Active CN211886278U (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system

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CN202010103362.9A Pending CN111185098A (en) 2019-08-02 2020-02-19 Purifier filter core center tube, spiral wound membrane module and compound filter core subassembly
CN202020186747.1U Active CN212091724U (en) 2019-08-02 2020-02-19 Water purification unit with filter element group spare
CN202010103369.0A Pending CN111229057A (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202010103184.XA Pending CN111185096A (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202020187693.0U Active CN212142159U (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202020191957.XU Active CN211886285U (en) 2019-08-02 2020-02-19 Spiral wound membrane module and water purification system
CN202010105864.5A Pending CN111185102A (en) 2019-08-02 2020-02-19 Spiral wound membrane module and water purification system
CN202010103163.8A Pending CN111229055A (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system

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