CN111185098A - Purifier filter core center tube, spiral wound membrane module and compound filter core subassembly - Google Patents

Purifier filter core center tube, spiral wound membrane module and compound filter core subassembly Download PDF

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Publication number
CN111185098A
CN111185098A CN202010103362.9A CN202010103362A CN111185098A CN 111185098 A CN111185098 A CN 111185098A CN 202010103362 A CN202010103362 A CN 202010103362A CN 111185098 A CN111185098 A CN 111185098A
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China
Prior art keywords
filter
columnar
central tube
sticks
filter element
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Pending
Application number
CN202010103362.9A
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Chinese (zh)
Inventor
李援开
盛先贺
张长春
高威
李友铃
申鸿海
孔艳
李见
钟小榛
李叶松
叶英东
董情
张梦轩
王映涵
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Publication of CN111185098A publication Critical patent/CN111185098A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10—Supported membranes; Membrane supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/10—Spiral-wound membrane modules
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/26—Further operations combined with membrane separation processes
    • B01D2311/2649—Filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/08—Flow guidance means within the module or the apparatus
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

The invention provides a water purifier filter element central tube, a spiral-wound membrane module and a composite filter element assembly, wherein the water purifier filter element central tube comprises: the filter comprises at least three columnar filter sticks (1), wherein the at least three columnar filter sticks (1) are arranged in the axial direction along the same direction, the at least three columnar filter sticks (1) are arranged in the circumferential direction, two adjacent columnar filter sticks (1) are connected, and the columnar filter sticks (1) are made of filter material which can allow fluid to pass through. The special-shaped central tube structure formed by combining a plurality of monomers can be formed, fluid can pass through the special-shaped central tube structure, and the contact area between the central tube and the fluid can be effectively increased under the condition that the volume of the central tube is not increased, so that the filtering area of the central tube is effectively increased, and the filtering effect is enhanced; the volume of the filter element can be reduced under the condition of the same filtering effect.

Description

Purifier filter core center tube, spiral wound membrane module and compound filter core subassembly
Technical Field
The invention belongs to the technical field of water purification, and particularly relates to a central tube of a water purifier filter element, a spiral membrane module and a composite filter element module.
Background
The core element of the reverse osmosis water purifier is a reverse osmosis membrane (RO) filter element. The reverse osmosis filter core generally includes the center tube and twines in the peripheral reverse osmosis membrane group of center tube, traditional purifier center tube be tubulose hollow structure, and the surface of this center tube concave pipe wall of locating the center tube is equipped with the guiding gutter as patent CN207091063U discloses a center tube to with pure water hole intercommunication, increased the area of intaking in the pure water hole on the center tube, thereby ensured the pure water volume through the pure water hole, and then guaranteed the exit velocity of center tube.
Because the composite filter element of the water purifier in the prior art has the technical problems of limited filtering area, poor filtering effect, larger filter element size while increasing the filtering area and the like, the invention researches and designs a central tube of the filter element of the water purifier, a roll-type membrane assembly and a composite filter element assembly.
Disclosure of Invention
Therefore, the invention aims to solve the technical problem of overcoming the defect that the composite filter element of the water purifier in the prior art has limited filtering area, and provides a central tube of the filter element of the water purifier, a roll-type membrane assembly and a composite filter element assembly.
The invention provides a water purifier filter element central tube, which comprises:
the filter comprises at least three columnar filter sticks, wherein the at least three columnar filter sticks are arranged in the axial direction along the same direction, the at least three columnar filter sticks are arranged in the circumferential direction, two adjacent columnar filter sticks are connected, and the columnar filter sticks are made of filter material which can allow fluid to pass through.
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 filter material capable of allowing fluid to pass through is made of carbon, so that the columnar filter stick is a carbon rod; and/or the columnar filter stick is of a solid structure.
Preferably, the first and second electrodes are formed of a metal,
the cylindrical filter rods are of cylindrical structures, the central tube of the water purifier filter element comprises a central axis, and at least three cylindrical filter rods surround the central axis and are arranged in the circumferential direction.
Preferably, the first and second electrodes are formed of a metal,
at least three columnar filter sticks are uniformly distributed and arranged around the central axis.
Preferably, the first and second electrodes are formed of a metal,
at least three columnar filter sticks are integrally formed to form an integral structure; or at least three columnar filter sticks are of a split structure, and the joint of two adjacent columnar filter sticks is sealed.
Preferably, the first and second electrodes are formed of a metal,
at least three columnar filter sticks are integrally formed through injection molding or casting.
Preferably, the first and second electrodes are formed of a metal,
the outer surface of the columnar filter stick is formed into a structure with at least one groove; and/or the interior of the columnar filter stick is provided with at least one hole structure.
Preferably, the first and second electrodes are formed of a metal,
the groove is in a strip shape or a thread shape; and/or the outer surface of the columnar filter stick is provided with a plurality of grooves; and/or the columnar filter stick is internally provided with a plurality of hole structures to form a honeycomb structure.
The invention also provides a spiral-wound membrane module, which comprises the water purifier filter element central pipe and a spiral-wound membrane wound around the periphery of the central pipe, wherein the spiral-wound membrane can allow water to pass through and filter the water.
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 sleeve with a cylindrical structure, the inner side of the inner wall of the supporting sleeve is provided with a cavity, and the supporting sleeve is also provided with at least one water through hole.
The invention also provides a water purifier filter element central tube which comprises the spiral-wound membrane module.
The central tube, the spiral membrane module and the composite filter element assembly of the water purifier filter element provided by the invention have the following beneficial effects:
according to the invention, the central tube of the filter element is set to be in a structural form comprising at least three columnar filter sticks, the columnar filter sticks are arranged along the circumferential direction and are mutually connected, and the columnar filter sticks are made of filter material materials which can allow fluid to pass through, so that a special-shaped central tube structure formed by combining a plurality of monomers can be formed, the fluid can pass through the special-shaped central tube structure, the contact area between the central tube and the fluid can be effectively increased under the condition of not increasing the volume of the central tube, the filtering area of the central tube is effectively increased, and the filtering effect is enhanced; the volume of the filter element can be reduced under the condition of the same filtering effect.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a central tube of a water purifier filter element according to the present invention;
FIG. 2 is a schematic structural view of a water purifier filter element center tube according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a water purifier filter element center tube according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an embodiment of a rolled membrane module of the invention;
FIG. 5 is a schematic structural view of a second embodiment of a rolled membrane module of the invention;
FIG. 6 is a schematic diagram of an embodiment of a net wound membrane module of the invention;
FIG. 7 is a schematic diagram of a fourth configuration of an embodiment of a net wound membrane module of the present invention;
FIG. 8 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:
10. a central tube; 1. a columnar filter stick; o, central axis; 2. a groove; 3. a hole structure; 4. rolling the membrane; 5. a support sleeve; 51. a cavity.
Detailed Description
As shown in fig. 1-8, the present invention provides a water purifier filter element central tube, which comprises:
the filter rod comprises at least three columnar filter rods 1, wherein the at least three columnar filter rods 1 are arranged in the axial direction along the same direction, the at least three columnar filter rods 1 are arranged along the circumferential direction, two adjacent columnar filter rods 1 are connected, and the columnar filter rods 1 are made of filter material materials capable of allowing fluid to pass through.
According to the invention, the central tube of the filter element is set to be in a structural form comprising at least three columnar filter sticks, the columnar filter sticks are arranged along the circumferential direction and are mutually connected, and the columnar filter sticks are made of filter material materials which can allow fluid to pass through, so that a special-shaped central tube structure formed by combining a plurality of monomers can be formed, the fluid can pass through the special-shaped central tube structure, the contact area between the central tube and the fluid can be effectively increased under the condition of not increasing the volume of the central tube, the filtering area of the central tube is effectively increased, and the filtering effect is enhanced; the volume of the filter element can be reduced under the condition of the same filtering effect.
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. The filter material is the preferred material of the filter material, can allow water to effectively pass through, can filter the water passing through the filter material, can form a primary filtering effect while realizing the supporting function of the central tube, overcomes the defect of volume increase caused by the increase of the number of filter element stages, reduces the volume and saves the cost.
Preferably, the first and second electrodes are formed of a metal,
the filter material capable of allowing fluid to pass through is made of carbon, so that the columnar filter stick 1 is a carbon rod; and/or the columnar filter stick 1 is of a solid structure. Carbon capable of improving taste is preferably used as a material of a central tube of the spiral-wound membrane element, a plastic central tube used by the existing spiral-wound membrane can be abandoned, the use of the plastic central tube of the existing spiral-wound 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 filtering 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.
Preferably, the first and second electrodes are formed of a metal,
the cylindrical filter rods 1 are of cylindrical structures, the central tube of the water purifier filter element comprises a central axis o, and at least three cylindrical filter rods 1 are arranged around the central axis o along the circumferential direction. This is a preferred configuration of the cylindrical filter rod of the present invention, which enables the formation of a cylindrically shaped central tube, thereby increasing the filtering effect.
Preferably, the first and second electrodes are formed of a metal,
at least three columnar filter sticks 1 are uniformly distributed and arranged around the central axis o. The filtering effect of the columnar filter stick can be enhanced.
Preferably, the first and second electrodes are formed of a metal,
at least three columnar filter sticks 1 are integrally formed to form an integral structure; or at least three columnar filter sticks 1 are of a split structure, and the joint of two adjacent columnar filter sticks 1 is sealed. The columnar filter stick is preferably molded, an integral structure can be formed in an integral molding mode, the assembly precision is improved, the sealing performance is improved, and the sealing effect, the filtering area and the filtering effect can be improved by the split structure and sealing at the joint. A carbon rod central tube for reverse osmosis filter core of water purifier is composed of several (at least 3, as shown in figure 8, the actual number is selected according to requirement) long and thin carbon rods, which are uniformly arranged and combined along the same axis, or integrally formed, if they are separated, the crossed position of two thin carbon rods needs to be sealed to form a closed flow channel, the sealing mode can be but not limited to sealing glue,
preferably, the first and second electrodes are formed of a metal,
at least three columnar filter sticks 1 are integrally molded by injection molding or casting. The columnar filter stick is preferably integrally formed, so that the forming efficiency is improved.
Preferably, the first and second electrodes are formed of a metal,
the outer surface of the columnar filter stick 1 is formed into a structure with at least one groove 2; and/or the inside of the cylindrical filter stick 1 is provided with at least one hole structure 3. The second embodiment is a preferable structural form of the second and third embodiments of the invention, and referring to fig. 2 and 5, the area of the outer surface of the columnar filter stick can be increased, so that the contact area between the columnar filter stick and the fluid is effectively increased, and the filtering effect is increased; in the third embodiment, referring to fig. 3 and 6, the base area between the interior of the columnar filter stick and the fluid can be increased, and the filtering effect can be increased.
In order to further increase the filtering area, a plurality of grooves can be further added on the outer surface of the fine carbon rod, and the grooves can be in a strip shape, a thread shape or other shapes as long as the area can be increased.
To further increase the filtration area, the internal structure of the fine carbon rod may be a honeycomb structure or other structure that can increase the area.
Preferably, the first and second electrodes are formed of a metal,
the groove 2 is in a strip shape or a thread shape; and/or the outer surface of the columnar filter stick 1 is provided with a plurality of grooves 2; and/or the columnar filter stick 1 is internally provided with a plurality of hole structures 3 to form a honeycomb structure. The grooves are the preferred shapes and the preferred structural forms of the grooves, and the hole structures are the preferred structural forms, the grooves can further effectively increase the contact area between the outer surface of the filter stick and fluid, and the hole structures can further effectively increase the contact area between the inner part of the filter stick and the fluid, so that the filtering area is effectively increased, and the filtering effect is improved.
The invention also provides a spiral-wound membrane module, which comprises the central tube of the water purifier filter element, and a spiral-wound membrane 4 (reverse osmosis membrane, RO membrane) wound around the periphery of the central tube 10, wherein the spiral-wound membrane 4 can allow water to pass through and filter the water. According to the invention, the central tube of the filter element is set to be in a structural form comprising at least three columnar filter sticks, the columnar filter sticks are arranged along the circumferential direction and are mutually connected, and the columnar filter sticks are made of filter material materials which can allow fluid to pass through, so that a special-shaped central tube structure formed by combining a plurality of monomers can be formed, the fluid can pass through the special-shaped central tube structure, the contact area between the central tube and the fluid can be effectively increased under the condition of not increasing the volume of the central tube, the filtering area of the central tube is effectively increased, and the filtering effect is enhanced; the volume of the filter element can be reduced under the condition of the same filtering effect.
Preferably, the first and second electrodes are formed of a metal,
the radial inner side of the central tube 10 is further provided with a support sleeve 5 with a cylindrical structure, the inner side of the inner wall of the support sleeve 5 is provided with a cavity 51, and the support sleeve 5 is further provided with at least one water through hole. Still through set up the support sleeve at the radial inboard of the inner wall of center tube, can play the supporting role to the material that has filtering capability (because it has filtering role, its structural strength is not enough to support usually or support intensity is not high enough) to improve the firm fixed effect of center tube, provide the condition for realizing long-time filtering role. In order to strengthen the strength of the thin carbon rod, a supporting sleeve can be added at the center of the carbon rod, the supporting sleeve can be cylindrical or annular or fence-shaped, the supporting sleeve is provided with through holes on the outer surface so as to enable water to pass through, and the supporting sleeve can be made of high-hardness materials such as metal.
The invention also provides a composite filter element assembly comprising a wound membrane module according to any one of the preceding claims.
The composite filter element comprises the carbon rod central tube, and also comprises a pretreatment filter element, an RO filter element and a post-filter element, wherein the pretreatment filter element can be PP cotton and an active carbon filter element, the post-filter element can be ultrafiltration, raw water is changed into purified water after passing through the pretreatment filter element and enters the RO filter element, the central tube of the RO filter element is the carbon rod central tube, and simultaneously, the post-filter effect is achieved, the water passing through the RO filter element is changed into pure water, and finally, the pure water is output to a user terminal for use after being subjected to post-ultrafiltration and bacteriostasis.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several 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 (12)

1. The utility model provides a purifier filter core center tube which characterized in that: the method comprises the following steps:
the filter comprises at least three columnar filter sticks (1), wherein the at least three columnar filter sticks (1) are arranged in the axial direction along the same direction, the at least three columnar filter sticks (1) are arranged in the circumferential direction, two adjacent columnar filter sticks (1) are connected, and the columnar filter sticks (1) are made of filter material which can allow fluid to pass through.
2. The water purifier filter element center tube of claim 1, wherein:
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.
3. The water purifier filter element center tube of claim 2, wherein:
the filter material capable of allowing fluid to pass through is made of carbon, so that the columnar filter stick (1) is a carbon rod; and/or the columnar filter stick (1) is of a solid structure.
4. A water purifier cartridge center tube as claimed in any one of claims 1-3, wherein:
the cylindrical filter rods (1) are of cylindrical structures, the central tube of the filter element of the water purifier comprises a central axis (o), and at least three cylindrical filter rods (1) surround the central axis (o) and are arranged along the circumferential direction.
5. The water purifier filter element center tube of claim 4, wherein:
at least three columnar filter sticks (1) are uniformly distributed and arranged around the central axis (o).
6. A water purifier filter element central tube according to any one of claims 1-5, wherein:
at least three columnar filter sticks (1) are integrally formed to form an integral structure; or at least three columnar filter sticks (1) are of a split structure, and the joint of two adjacent columnar filter sticks (1) is sealed.
7. The water purifier filter element center tube of claim 6, wherein:
at least three columnar filter sticks (1) are integrally formed through injection molding or casting.
8. A water purifier filter element central tube according to any one of claims 1-7, wherein:
the outer surface of the columnar filter stick (1) is formed into a structure with at least one groove (2); and/or the interior of the cylindrical filter stick (1) is provided with at least one hole structure (3).
9. The water purifier filter element center tube of claim 8, wherein:
the groove (2) is in a strip shape or a thread shape; and/or the outer surface of the cylindrical filter stick (1) is provided with a plurality of grooves (2); and/or the cylindrical filter stick (1) is internally provided with a plurality of hole structures (3) to form a honeycomb structure.
10. A spiral wound membrane module, characterized in that:
comprising a water purifier cartridge central tube according to any one of claims 1-9, further comprising a rolled membrane (4) wound around the periphery of the central tube (10), the rolled membrane (4) being capable of allowing water to pass through and filtering water.
11. The membrane module of claim 10, wherein:
the radial inner side of the central tube (10) is further provided with a supporting sleeve (5) with a cylindrical structure, the inner side of the inner wall of the supporting sleeve (5) is provided with a cavity (51), and the supporting sleeve (5) is further provided with at least one water through hole.
12. A composite filter element assembly, comprising: comprising a rolled membrane module according to any one of claims 10-11.
CN202010103362.9A 2019-08-02 2020-02-19 Purifier filter core center tube, spiral wound membrane module and compound filter core subassembly Pending CN111185098A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910713454 2019-08-02
CN2019107134546 2019-08-02

Publications (1)

Publication Number Publication Date
CN111185098A true CN111185098A (en) 2020-05-22

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Family Applications (25)

Application Number Title Priority Date Filing Date
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
CN202010103186.9A Pending CN111229056A (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202010105862.6A Active CN112295417B (en) 2019-08-02 2020-02-19 A center tube, roll-type membrane module and water purification system for roll-type membrane
CN202020187693.0U Active CN212142159U (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
CN202020186748.6U Active CN212091725U (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202010105864.5A Pending CN111185102A (en) 2019-08-02 2020-02-19 Spiral wound membrane module and water purification system
CN202020186721.7U Active CN211886277U (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
CN202010103163.8A Pending CN111229055A (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
CN202020186747.1U Active CN212091724U (en) 2019-08-02 2020-02-19 Water purification unit with filter element group spare
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
CN202020191957.XU Active CN211886285U (en) 2019-08-02 2020-02-19 Spiral wound membrane module and water purification system
CN202020186746.7U Active CN211886281U (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
CN202010103369.0A Pending CN111229057A (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202020186722.1U Active CN211886278U (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
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
CN202010103184.XA Pending CN111185096A (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
CN202020187694.5U Active CN211886282U (en) 2019-08-02 2020-02-19 Spiral wound membrane module and water purification system

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Application Number Title Priority Date Filing Date
CN202010103186.9A Pending CN111229056A (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202010105862.6A Active CN112295417B (en) 2019-08-02 2020-02-19 A center tube, roll-type membrane module and water purification system for roll-type membrane
CN202020187693.0U Active CN212142159U (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
CN202020186748.6U Active CN212091725U (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202010105864.5A Pending CN111185102A (en) 2019-08-02 2020-02-19 Spiral wound membrane module and water purification system
CN202020186721.7U Active CN211886277U (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
CN202010103163.8A Pending CN111229055A (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
CN202020186747.1U Active CN212091724U (en) 2019-08-02 2020-02-19 Water purification unit with filter element group spare
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
CN202020191957.XU Active CN211886285U (en) 2019-08-02 2020-02-19 Spiral wound membrane module and water purification system
CN202020186746.7U Active CN211886281U (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
CN202010103369.0A Pending CN111229057A (en) 2019-08-02 2020-02-19 Compound filter element group spare and water purification system
CN202020186722.1U Active CN211886278U (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
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
CN202010103184.XA Pending CN111185096A (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
CN202020187694.5U Active CN211886282U (en) 2019-08-02 2020-02-19 Spiral wound membrane module and water purification system

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