CN114570214A - Membrane structure, water purification element and manufacturing method thereof, and water purification equipment - Google Patents
Membrane structure, water purification element and manufacturing method thereof, and water purification equipment Download PDFInfo
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- CN114570214A CN114570214A CN202210329906.2A CN202210329906A CN114570214A CN 114570214 A CN114570214 A CN 114570214A CN 202210329906 A CN202210329906 A CN 202210329906A CN 114570214 A CN114570214 A CN 114570214A
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- 239000012528 membrane Substances 0.000 title claims abstract description 259
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 181
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 59
- 238000000746 purification Methods 0.000 title claims description 21
- 239000010410 layer Substances 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 239000011229 interlayer Substances 0.000 claims abstract description 21
- 108091006146 Channels Proteins 0.000 claims description 45
- 238000000926 separation method Methods 0.000 claims description 40
- 238000001223 reverse osmosis Methods 0.000 claims description 29
- 238000001728 nano-filtration Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 16
- 239000004745 nonwoven fabric Substances 0.000 claims description 14
- 102000010637 Aquaporins Human genes 0.000 claims description 10
- 239000004952 Polyamide Substances 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 10
- 229920002647 polyamide Polymers 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 9
- 239000000084 colloidal system Substances 0.000 claims description 8
- 108010063290 Aquaporins Proteins 0.000 claims description 5
- 229920002284 Cellulose triacetate Polymers 0.000 claims description 5
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 16
- 230000010287 polarization Effects 0.000 abstract description 3
- 238000010612 desalination reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 4
- 239000012466 permeate Substances 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000012797 qualification Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Classifications
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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
- B01D69/06—Flat membranes
-
- 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
- B01D63/06—Tubular membrane modules
- B01D63/061—Manufacturing thereof
-
- 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
- B01D63/06—Tubular membrane modules
- B01D63/062—Tubular membrane modules with membranes on a surface of a support tube
- B01D63/065—Tubular membrane modules with membranes on a surface of a support tube on the outer surface thereof
-
- 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
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Nanotechnology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a membrane structure, a water purifying element, a manufacturing method of the water purifying element and water purifying equipment, wherein the membrane structure is wound on the periphery of a central pipe and is arranged in a cylindrical manner and comprises at least one membrane group, the width direction of the membrane group is a first direction, the length direction of the membrane group is a second direction, the membrane group comprises two membrane layers, a plurality of convex parts are arranged in at least one side of the two membrane layers in an interlayer, the convex parts are arranged at intervals in the second direction and used for guiding liquid flowing in from one end of the membrane group in the first direction, and the convex parts are used for guiding the liquid to flow in a direction forming an included angle with the first direction; in the technical scheme of the invention, the plurality of convex parts are arranged for guiding flow, so that concentration polarization can be reduced, and the anti-pollution performance of the membrane structure and the desalination rate of the first cup of water are improved; the filtering area and the filling area can be increased, and the filtering efficiency is improved; meanwhile, the membrane structure is convenient to roll, and the product percent of pass is improved.
Description
Technical Field
The invention relates to the technical field of water purification, in particular to a diaphragm structure, a water purification element, a manufacturing method of the water purification element and water purification equipment.
Background
When the existing reverse osmosis and nanofiltration membrane element is rolled, a raw water separation net needs to be placed on the upper surface of a membrane, the membrane is supported to form a raw water flow channel, and meanwhile, the turbulence of fluid on the surface of the membrane is increased, and the concentration polarization is reduced. However, the introduction of raw water screens also presents problems. For example, the contact portion between the membrane and the raw water screen cannot permeate water, which reduces the effective filtration area of the membrane and the filtration efficiency of the membrane element. The thicker raw water separation net also increases the diameter of the membrane element, and the membrane rolling area is limited. When the membrane element is rolled, the raw water separation net must be placed at a designed position, otherwise, a raw water flow passage is blocked, and the filtration efficiency is influenced. In addition, the section of the water inlet separation net is sharp, and the raw water separation net can be displaced due to long-term water flow impact, so that the membrane is scratched.
Disclosure of Invention
The invention mainly aims to provide a membrane structure, a water purification element, a manufacturing method of the water purification element and water purification equipment, and aims to solve the problems that when an existing membrane element is rolled, a raw water separation net is placed, so that the membrane filtering efficiency is reduced, the membrane rolling area is limited, a raw water flow passage is blocked, and a membrane is damaged.
In order to achieve the above object, the present invention provides a membrane structure, configured to be wound around a center tube in a cylindrical shape, and including at least one membrane group, where a width direction of the membrane group is a first direction, and a length direction of the membrane group is a second direction, each membrane group includes two membrane layers, at least one side of each of the two membrane layers in an interlayer is provided with a plurality of protrusions, the protrusions are spaced apart in the second direction, and are configured to guide a liquid flowing from one end of the membrane group in the first direction, and the protrusions are configured to guide the liquid to flow in a direction forming an included angle with the first direction.
Optionally, two membrane layers of each membrane group are formed by folding the same membrane unit.
Optionally, a plurality of the membrane layers include one of a reverse osmosis membrane, a nanofiltration membrane, and a nonwoven fabric.
Optionally, the reverse osmosis membrane comprises one of a polyamide membrane composite reverse osmosis membrane, a cellulose triacetate reverse osmosis membrane, and a aquaporin reverse osmosis membrane; and/or the presence of a gas in the gas,
the nanofiltration membrane comprises a polyamide film composite nanofiltration membrane.
Optionally, the shape of the plurality of protrusions comprises a dot shape or a linear shape; and/or the presence of a gas in the gas,
the plurality of convex parts comprise colloid arranged on one side corresponding to the membrane layer.
Optionally, the plurality of convex portions include a plurality of convex portions, at least a portion of the convex portions are linear and are disposed in an inclined manner with respect to the first direction, so that the convex portions are disposed to guide the liquid to flow in a direction forming an included angle with respect to the first direction.
Optionally, the plurality of convex portions are divided into a plurality of rows of convex portion groups along the second direction, and each row of convex portion groups comprises a plurality of convex portions arranged at intervals along the first direction.
Optionally, at least some of the plurality of protrusions are disposed in a dot shape, so that the protrusions can change the flow direction of the liquid to be disposed obliquely to the first direction.
The present invention also provides a water purifying element, comprising:
the central tube extends along a first direction, a water outlet channel is formed in the central tube, one end of the central tube is provided with a water outlet communicated with the water outlet channel, and the periphery of the central tube is provided with a water through hole communicated with the water outlet channel;
the membrane structure comprises a plurality of convex parts, a plurality of water channels and a plurality of water channels, wherein the convex parts of the membrane structure are positioned in an interlayer of a membrane group of the membrane structure, so that a raw water flow channel is formed in the interlayer of each membrane group; and the number of the first and second groups,
the water production separation net is arranged on one side of the central pipe, and faces to each membrane group of the membrane structure, so that the adjacent membrane groups are adjacent to each other, the membrane groups close to the central pipe are formed with water production flow channels between the central pipe, the membrane groups close to the central pipe are formed with water production flow channels formed between the central pipe, and the water production flow channels are communicated with the water outlet flow channels through the water passing holes.
The invention also provides a manufacturing method of the water purifying element, which comprises the following steps:
providing a diaphragm unit, wherein the diaphragm unit comprises a diaphragm body and a plurality of convex parts correspondingly arranged on one side surface of the diaphragm body, the length direction of the diaphragm body is a first direction, the width direction of the diaphragm body is a second direction, and the convex parts are arranged at intervals in the second direction;
folding the membrane units to form a membrane sheet group, wherein the plurality of protrusions are located in an interlayer of the membrane sheet group;
arranging a water production separation net on one side surface of the diaphragm group, which is deviated from the two diaphragm layers, wherein the water production separation net is adhered to the diaphragm layers through the glue;
laminating a plurality of membrane groups to form a membrane structure, wherein each water production separation net is positioned between two corresponding adjacent membrane groups;
winding a plurality of the membrane structures outside a central tube, wherein the water production barrier net is arranged towards one side of the central tube.
Optionally, "providing a diaphragm unit, wherein the diaphragm unit includes a diaphragm body and a plurality of protrusions correspondingly disposed on one side of the diaphragm body, a length direction of the diaphragm body is a first direction, a width direction of the diaphragm body is a second direction, and the plurality of protrusions are disposed at intervals in the second direction", before the step of:
providing a membrane body, wherein the membrane body comprises a reverse osmosis membrane or a nanofiltration membrane;
dispensing glue on one side of the membrane body to form the plurality of convex parts on one side surface of the membrane body.
Optionally, "providing a diaphragm unit, wherein the diaphragm unit includes a diaphragm body and a plurality of protrusions correspondingly disposed on one side of the diaphragm body, a length direction of the diaphragm body is a first direction, a width direction of the diaphragm body is a second direction, and the plurality of protrusions are disposed at intervals in the second direction", before the step of:
providing a membrane body, wherein the membrane body comprises a non-woven fabric, and one side surface of the non-woven fabric is integrally formed into a concave-convex surface so as to form the plurality of convex parts.
The invention also provides water purification equipment which comprises the water purification element.
Optionally, the water purification apparatus is a water purifier.
In the technical scheme of the invention, a plurality of convex parts are arranged in at least one side of the two membrane layers in the interlayer and used for guiding liquid flowing in from one end of the membrane group in the first direction, and the convex parts are used for guiding the liquid to flow in a direction forming an included angle with the first direction; the plurality of convex parts can support the two membrane layers to form a raw water flow channel in an interlayer of the two membrane layers, so that raw water flow guiding is realized, the plurality of convex parts can replace the existing raw water separation net, and thus, the filtering area and the filling area of the membrane structure can be increased, the filtering efficiency is improved, the membrane structure can be rolled more conveniently, and the qualification rate of products is improved; the problem that the raw water flow channel is blocked due to displacement of the raw water separation net is solved by replacing the raw water separation net; the membrane body can be prevented from being scratched by the raw water separation net.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a diaphragm structure provided by the present invention;
FIG. 2 is a schematic diagram of a first embodiment of the membrane layer of FIG. 1;
FIG. 3 is a schematic diagram of a second embodiment of the membrane layer of FIG. 1;
FIG. 4 is a schematic diagram of a third embodiment of the membrane layer of FIG. 1;
FIG. 5 is a schematic diagram of a fourth embodiment of the membrane layer of FIG. 1;
FIG. 6 is a schematic diagram of a fifth embodiment of the membrane layer of FIG. 1;
FIG. 7 is a schematic diagram of a sixth embodiment of the membrane layer of FIG. 1;
FIG. 8 is a schematic diagram of a seventh embodiment of the membrane layer of FIG. 1;
FIG. 9 is a schematic structural diagram of an embodiment of a water purifying element according to the present invention;
FIG. 10 is a schematic view of a manufacturing process of a water purifying element according to an embodiment of the present invention;
FIG. 11 is a process flow diagram of a first embodiment of a method of manufacturing the water purifying element of FIG. 10;
FIG. 12 is a process flow diagram of a second embodiment of a method of manufacturing the water purifying element of FIG. 10;
fig. 13 is a process flow diagram of a third embodiment of a method for manufacturing the water purifying element shown in fig. 10.
The embodiment of the invention is illustrated by reference numerals:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
When the existing reverse osmosis and nanofiltration membrane element is rolled, a raw water separation net needs to be placed on the upper surface of a membrane, the membrane is supported to form a raw water flow channel, and meanwhile, the turbulence of fluid on the surface of the membrane is increased, and the concentration polarization is reduced. However, the introduction of raw water screens also presents problems. For example, the contact portion between the membrane and the raw water screen cannot permeate water, which reduces the effective filtration area of the membrane and the filtration efficiency of the membrane element. The thicker raw water separation net also increases the diameter of the membrane element, and the membrane rolling area is limited. When the membrane element is rolled, the raw water separation net must be placed at a designed position, otherwise, a raw water flow passage is blocked, and the filtration efficiency is influenced. In addition, the section of the water inlet separation net is sharp, and the raw water separation net can be displaced due to long-term water flow impact, so that the membrane is scratched.
In view of the above, the present invention provides a membrane structure, a water purifying element and a manufacturing method thereof, and a water purifying apparatus, which can be a water purifier, a water heater, an atomizer, etc. Fig. 1 to 8 show an embodiment of a diaphragm structure provided by the present invention; FIG. 9 is an embodiment of a water purifying element provided by the present invention; fig. 10 to 13 show an embodiment of a method for manufacturing a water purifying element according to the present invention.
Referring to fig. 1 to 8, the membrane structure 100 is configured to be wound around a center tube 200 in a cylindrical shape, and includes at least one membrane set 1, the width of the membrane set 1 is a first direction F1, the length of the membrane set 1 is a second direction F2, each membrane set 1 includes two membrane layers 11, a plurality of protrusions 12 are disposed in at least one side of the two membrane layers 11 in the interlayer, the plurality of protrusions 12 are spaced in the second direction F2 to guide the liquid flowing from one end of the membrane set 1 in the first direction F1, and the plurality of protrusions 12 are configured to guide the liquid flowing in a direction forming an angle with the first direction F1
In the technical scheme of the invention, a plurality of convex parts 12 are arranged on at least one side of the two membrane layers 11 positioned in the interlayer to guide the liquid flowing from one end of the membrane group 1 in the first direction F1, and the plurality of convex parts 12 are arranged to guide the liquid to flow in a direction forming an included angle with the first direction F1; the plurality of convex parts 12 can support the two membrane layers 11 to form a raw water flow channel in an interlayer of the two membrane layers 11, so that raw water flow guiding is realized, the plurality of convex parts 12 can replace the existing raw water separation net, and therefore, the filtering area and the filling area of the membrane structure 100 can be increased, the filtering efficiency is improved, the membrane structure 100 can be rolled more conveniently, and the qualification rate of products is improved; the problem that the raw water flow channel is blocked due to displacement of the raw water separation net is solved by replacing the raw water separation net; the membrane body can be prevented from being scratched by the raw water separation net.
Specifically, the two diaphragm layers 11 of the diaphragm group 1 are formed by folding the same diaphragm unit 13; in this embodiment, the diaphragm unit 13 is folded to form two laminated diaphragm layers 11, so that the number of the diaphragm units 13 is reduced, the cost is reduced, the manufacturing process of the diaphragm structure 100 is simplified, and the manufacturing efficiency of the diaphragm structure 100 is improved.
The specific form of the membrane layer 11 is not limited, the membrane layer 11 can be a reverse osmosis membrane, a nanofiltration membrane or a non-woven fabric, and a user can select different types of the membrane layers 11 according to actual use requirements to manufacture the membrane structure 100 meeting the requirements.
In the invention, the reverse osmosis membrane comprises one of a polyamide film composite reverse osmosis membrane, a cellulose triacetate reverse osmosis membrane and a aquaporin reverse osmosis membrane, and when a user needs to select the reverse osmosis membrane as the membrane layer 11, the polyamide film composite reverse osmosis membrane or the cellulose triacetate reverse osmosis membrane or the aquaporin reverse osmosis membrane can be selected, so that the membrane layer 11 has a better osmosis effect.
In the invention, the nanofiltration membrane comprises a polyamide film composite nanofiltration membrane, and when a user needs to select the nanofiltration membrane as the membrane layer 11, the polyamide film composite nanofiltration membrane can be selected, so that the membrane layer 11 has a better permeation effect.
It should be noted that the two technical features may be set alternatively or simultaneously, specifically, the two technical features are set simultaneously, that is, when a user needs to select the reverse osmosis membrane as the membrane layer 11, the polyamide film composite reverse osmosis membrane or the cellulose triacetate reverse osmosis membrane or the aquaporin reverse osmosis membrane may be selected; when a user needs to select the nanofiltration membrane as the membrane layer 11, the polyamide film composite nanofiltration membrane can be selected, so that the membrane layer 11 has a better permeation effect.
The shape of the convex portion 121 is not limited, specifically, referring to fig. 2 to 6, in the first embodiment, the second embodiment, the third embodiment, the fourth embodiment and the fifth embodiment, the shape of the convex portion 121 is linear, and it should be noted that the convex portion 121 is linear, so that the flow guiding of the liquid is more accurate, and the flow guiding efficiency is improved; further referring to fig. 7 and 8, in the sixth embodiment and the seventh embodiment, the shape of the protrusion 121 is a dot shape, and it should be noted that, the protrusion 121 is disposed in a dot shape, so that not only the fabrication of the protrusion 121 is easier, but also the liquid flow guiding is diversified, and the richness of the flow channel structure is improved.
The invention is not limited to the specific form of the convex portion 121, and in some embodiments, the convex portion 121 includes a colloid disposed on one side surface of the membrane layer 11; that is, through set up the colloid on one side surface of diaphragm layer 11 to form a plurality of convex part 121, easy operation realizes more easily, moreover the colloid forms after the solidification convex part 121 can support diaphragm layer 11 forms the raw water runner, realizes the raw water conservancy diversion, consequently also can replace current raw water and separate the net.
It should be noted that the specific molding manner of the colloid is not limited in the present invention, and the colloid can be molded by using methods such as template imprinting, glue dispensing with a glue gun, spray printing, and the like.
Specifically, with further reference to fig. 2 to 5, in some embodiments of the present invention, the plurality of protrusions 12 includes a plurality of protrusions 121, at least a portion of the protrusions 121 are linear and inclined with respect to the first direction F1, such that the protrusions 121 are configured to at least guide the liquid to flow in a direction forming an angle with respect to the first direction F1; that is, the plurality of projections 12 guide the flow of the liquid, and the structure is simple.
Specifically, referring to fig. 5, the plurality of protrusions 12 include a first protrusion 122 and a second protrusion 123, and the first protrusion 122 and the second protrusion 123 are disposed obliquely to two sides of the membrane body in the second direction F2, so that the plurality of protrusions 12 guide the liquid to flow in two directions forming an included angle with the first direction F1; the plurality of protrusions 12 are provided as the first protrusion 122 and the second protrusion 123 inclined to both sides of the diaphragm body in the second direction F2, so that the flow direction of the liquid has multi-directionality, thereby obtaining a rich flow path structure.
In some embodiments of the present invention, the plurality of protrusions 12 are divided into a plurality of rows of protrusion groups along the second direction F2, each row of the protrusion groups including a plurality of protrusions 121 spaced apart along the first direction F1; the plurality of protrusions 12 are divided into a plurality of rows of protrusion groups, flow can be guided between two adjacent rows of protrusion groups, and each protrusion 121 can change the flow direction of the liquid to be at least obliquely arranged with the first direction F1, so that the flow direction of the liquid has multi-directional property, and a rich flow channel structure is obtained.
Referring to fig. 5, in the present embodiment, the plurality of protrusions 12 include a first protrusion 122 and a second protrusion 123, and the first protrusion 122 and the second protrusion 123 are disposed to be inclined toward two sides of the membrane body in the second direction F2, so that the plurality of protrusions 12 guide the liquid to flow in two directions forming an included angle with the first direction F1; each of the convex part groups includes the first convex parts 122 and the second convex parts 123 alternately arranged; through the first convex part 122 and the second convex part 123, the liquid flows towards two directions forming an included angle with the first direction F1, so that the flowing direction of the liquid is increased to have multi-directionality, and a rich flow channel structure is obtained.
Referring to fig. 6, in the present embodiment, the plurality of protrusions 12 include a first protrusion 122 and a second protrusion 123, and the first protrusion 122 and the second protrusion 123 are disposed to be inclined toward two sides of the membrane body in the second direction F2, so that the plurality of protrusions 12 guide the liquid to flow in two directions forming an included angle with the first direction F1; the plurality of convex portion groups alternately arrange the first convex portions 122 and the second convex portions 123; through the first convex part 122 and the second convex part 123, the liquid flows towards two directions forming an included angle with the first direction F1, so that the flowing direction of the liquid is increased to have multi-directionality, and a rich flow channel structure is obtained.
In another embodiment of the present invention, referring to fig. 7 and 8, the plurality of protrusions 12 includes a plurality of protrusions 12, and at least a portion of the protrusions 121 are disposed in a dot shape, so that the protrusions 121 can change the flow direction of the liquid to be disposed obliquely to the first direction F1; the convex part 121 is arranged in a point shape, so that the liquid has a plurality of flow directions after flowing through the convex part 121, thereby increasing the multi-directional flow direction of the liquid and further obtaining a rich flow channel structure.
With further reference to fig. 7, the plurality of protrusions 12 are divided into a plurality of rows of protrusion sets along the second direction F2, each row of protrusion sets including a plurality of protrusions 121 spaced along the first direction F1; the plurality of convex portions 12 are divided into a plurality of rows of convex portion groups, flow can be guided between two adjacent rows of convex portion groups, and each convex portion 121 can change the flow direction of the liquid to be at least obliquely arranged with the first direction F1, so that the flow direction of the liquid has multi-directionality, and a rich flow channel structure is obtained.
Referring to fig. 8, the protrusions 121 on two adjacent rows of the protrusion sets are arranged in a staggered manner; the convex parts 121 on two adjacent rows of convex part groups are arranged in a staggered mode, so that the arrangement of the convex parts 121 is denser, the liquid can flow through more convex parts 121, the flowing direction of the liquid is multidirectional, and a rich flow channel structure is obtained.
The invention also provides a water purifying element 1000, please refer to fig. 8, wherein the water purifying element 1000 comprises a central tube 200, a membrane structure 100 and a water producing separation net 300, the central tube 200 extends along a first direction F1, a water outlet channel is formed in the central tube, one end of the central tube is provided with a water outlet communicated with the water outlet channel, and the peripheral side of the central tube is provided with a water through hole communicated with the water outlet channel; the plurality of convex parts 12 of the membrane structure 100 are positioned in the interlayer of the membrane group 1 of the membrane structure 100, so that a raw water flow channel is formed in the interlayer of each membrane group 1; the water production separation net 300 is arranged on one side of each membrane group 1 of the membrane structure 100, which faces the central pipe 200, so that a water production flow channel is formed between each two adjacent membrane groups 1 and between the membrane group 1 close to the central pipe 200 and the central pipe 200, and the water production flow channel formed between the membrane group 1 close to the central pipe 200 and the central pipe 200 is communicated with the water outlet flow channel through the water through hole; in this embodiment, the periphery of the central tube 200 is wound around the membrane structure 100, the plurality of protrusions 12 are disposed in the interlayer of the membrane group 1 of the membrane structure 100 to form a raw water channel in the interlayer of the membrane group 1, and the water production separation net 300 is disposed at one side of the membrane group 1 to form a water production channel between the adjacent two membrane groups 1 and the central tube 200, in use, raw water enters the raw water channel in the interlayer of the membrane group 1 along the first direction F1, and is guided by the raw water channel, and the raw water is filtered by the membrane layer 11 to generate pure water, which permeates to one side of the membrane group 1 and is guided by the water production channel to the central tube 200 along the second direction F2 and flows out from the water outlet of the central tube 200, thus, the water purifying function of the water purifying element 1000 is realized; it should be noted that, the membrane structure 100 is configured as the membrane structure 100, that is, the water purifying element 1000 has the technical features of all the embodiments of the membrane structure 100, and all the beneficial effects brought by all the embodiments are also achieved, and no further description is given here.
Referring to fig. 10 to 13, a method for manufacturing a water purifying element according to an embodiment of the present invention is further provided.
Referring to fig. 11, fig. 11 is a first embodiment of a method for manufacturing a water purifying element according to the present invention.
The manufacturing method of the water purifying element comprises the following steps:
s30: providing a diaphragm unit, wherein the diaphragm unit comprises a diaphragm body and a plurality of convex parts correspondingly arranged on one side surface of the diaphragm body, the length direction of the diaphragm body is a first direction, the width direction of the diaphragm body is a second direction, and the convex parts are arranged at intervals in the second direction;
s40: folding the membrane units to form a membrane sheet group, wherein the plurality of protrusions are located in an interlayer of the membrane sheet group;
s50: arranging a water production separation net on one side surface of the diaphragm group, which is deviated from the two diaphragm layers, wherein the water production separation net is adhered to the diaphragm layers through the glue;
s60: laminating a plurality of membrane groups to form a membrane structure, wherein each water production separation net is positioned between two corresponding adjacent membrane groups;
s70: winding a plurality of the membrane structures outside a central tube, wherein the water production barrier net is arranged towards one side of the central tube.
In the embodiment, the membrane units are folded to form the membrane group, so that the using number of the membrane units is saved, the cost is saved, the manufacturing process of the membrane structure is simplified, and the manufacturing efficiency of the membrane structure is improved; after the diaphragm units are turned over to form the diaphragm group, gluing is carried out on the outer side of the diaphragm group, and the water production separation net is attached to form a diaphragm structure, wherein the water production separation net is adhered to the diaphragm group through glue, so that the stability of the diaphragm structure is ensured; after the membrane structure is wound outside the central pipe, a raw water flow channel is formed in an interlayer of the membrane group, and the water production separation net supports the membrane group, so that a water production flow channel is formed between the membrane group and the outer side of the central pipe, therefore, the structure is simple, and the manufacturing process of the water purifying element is simplified; meanwhile, in the actual use process, raw water enters the raw water flow channels in the diaphragm group interlayer along the first direction, pure water is generated after the raw water is filtered by the diaphragm layer through the raw water flow channel, the pure water permeates to one side of the diaphragm group and flows to the central pipe through the water generation flow channel along the second direction, and flows out of the water outlet of the central pipe, so that the water purifying function of the water purifying element is realized.
Referring to fig. 12, fig. 12 is a second embodiment of a method for manufacturing a water purifying element according to the present invention.
The step S30 of providing a diaphragm unit, wherein the diaphragm unit includes a diaphragm body and a plurality of protrusions correspondingly disposed on one side of the diaphragm body, the diaphragm body has a first length direction and a second width direction, and the plurality of protrusions are disposed at intervals in the second direction, and the method further includes:
s10: providing a membrane body, wherein the membrane body comprises a reverse osmosis membrane or a nanofiltration membrane;
s20: dispensing glue on one side of the membrane body to form the convex parts on one side surface of the membrane body.
In this embodiment, the membrane body is a reverse osmosis membrane or a nanofiltration membrane, and one side of the membrane body is subjected to dispensing to form the plurality of convex parts on one side surface of the membrane body, so that the operation is simple and the implementation is easier; and the plurality of convex parts can be formed after the colloid is solidified, and the forming time is short and the forming speed is high.
Referring to fig. 13, fig. 13 is a second embodiment of a method for manufacturing a water purifying element according to the present invention.
The step S30 of providing a diaphragm unit, wherein the diaphragm unit includes a diaphragm body and a plurality of protrusions correspondingly disposed on one side of the diaphragm body, the diaphragm body has a first length direction and a second width direction, and the plurality of protrusions are disposed at intervals in the second direction, and the method further includes:
s10': providing a membrane body, wherein the membrane body comprises a non-woven fabric, and one side surface of the non-woven fabric is integrally formed into a concave-convex surface so as to form the plurality of convex parts.
In this embodiment, the membrane body is made of a non-woven fabric, and a concave-convex surface is integrally formed on one side surface of the non-woven fabric; the non-woven fabric has a filtering function of a common membrane, so that the non-woven fabric can be used as the membrane layer; forming a concave-convex surface on one side surface of the non-woven fabric to form the plurality of convex parts, so that the manufacturing process of the membrane structure is simplified, and the manufacturing efficiency of the membrane structure is improved; but also saves the production materials and reduces the production cost.
The invention further provides a water purifying device, which comprises a water purifying element 1000, wherein the water purifying element 1000 is provided as the water purifying element 1000, that is, the water purifying device comprises all technical characteristics of the water purifying element 1000, so that the water purifying device also has the technical effects brought by all the technical characteristics, and the details are not repeated herein.
Specifically, the water purification device is a water purification machine, that is, the water purification element 1000 is arranged in the water purification machine, and in the use process, the convex part 121 can support the membrane layer 11 to form a raw water flow channel to realize raw water diversion, so that the convex part 121 can replace the existing raw water separation net, and thus, not only can the filtration area and the filling area of the membrane element be increased, thereby improving the filtration efficiency, but also the rolling of the membrane structure 100 can be facilitated, and the qualification rate of the product can be improved; moreover, the structure of the water purifying element 1000 is simplified and the cost is saved by replacing the raw water separation net; the problem of blockage of the raw water flow channel caused by displacement of the raw water separation net is solved; the membrane body can be prevented from being scratched by the raw water separation net.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the specification and drawings, or any other related technical fields, which are directly or indirectly applied to the present invention, are included in the scope of the present invention.
Claims (14)
1. The utility model provides a diaphragm structure for the periphery of coiling center tube is the tube-shape setting, its characterized in that, includes at least one diaphragm group, the width place direction of diaphragm group is the first direction, and the direction that its length place is the second direction, each diaphragm group all includes two diaphragm layers, two diaphragm layers are arranged in the intermediate layer at least one side and are provided with a plurality of convex parts, a plurality of convex parts are in interval setting in the second direction is used for to certainly diaphragm group is in the liquid of the one end inflow in the first direction carries out the water conservancy diversion, just a plurality of convex parts are used for at least with the liquid direction with the direction flow setting that the first direction is the contained angle.
2. The diaphragm structure of claim 1 wherein both diaphragm layers of each diaphragm group are formed by folding the same diaphragm unit.
3. The membrane structure of claim 1, wherein the plurality of membrane layers comprise one of a reverse osmosis membrane, a nanofiltration membrane, and a nonwoven fabric.
4. The membrane structure of claim 3 wherein said reverse osmosis membrane comprises one of a polyamide membrane composite reverse osmosis membrane, a cellulose triacetate reverse osmosis membrane, and a aquaporin reverse osmosis membrane; and/or the presence of a gas in the gas,
the nanofiltration membrane comprises a polyamide film composite nanofiltration membrane.
5. The diaphragm structure of claim 1 wherein the shape of the plurality of protrusions comprises a dot or line shape; and/or the presence of a gas in the gas,
the plurality of convex parts comprise colloid arranged on one side corresponding to the membrane layer.
6. The diaphragm structure of claim 1 wherein said plurality of protrusions comprises a plurality of protrusions, at least some of said protrusions being linear and disposed at an angle to said first direction such that said protrusions are disposed to direct at least said liquid to flow in a direction that is at an angle to said first direction.
7. The diaphragm structure of claim 1 wherein said plurality of projections are grouped into rows of projection sets along said second direction, each row of said projection sets comprising a plurality of projections spaced apart along said first direction.
8. The diaphragm structure of claim 1 wherein at least some of said plurality of protrusions are disposed in a dotted pattern such that said protrusions are capable of changing the flow direction of said liquid to be disposed obliquely to said first direction.
9. A water purification unit, comprising:
the central tube extends along a first direction, a water outlet channel is formed in the central tube, one end of the central tube is provided with a water outlet communicated with the water outlet channel, and the periphery of the central tube is provided with a water through hole communicated with the water outlet channel;
the membrane structure according to any one of claims 1 to 8, wherein a plurality of protrusions of the membrane structure are located in the interlayers of the membrane groups of the membrane structure, so that a raw water flow channel is formed in each interlayer of the membrane groups; and the number of the first and second groups,
the water production separation net is arranged on one side of the central pipe, and faces to each membrane group of the membrane structure, so that the adjacent membrane groups are adjacent to each other, the membrane groups close to the central pipe are formed with water production flow channels between the central pipe, the membrane groups close to the central pipe are formed with water production flow channels formed between the central pipe, and the water production flow channels are communicated with the water outlet flow channels through the water passing holes.
10. A manufacturing method of a water purifying element is characterized by comprising the following steps:
providing a diaphragm unit, wherein the diaphragm unit comprises a diaphragm body and a plurality of convex parts correspondingly arranged on one side surface of the diaphragm body, the length direction of the diaphragm body is a first direction, the width direction of the diaphragm body is a second direction, and the convex parts are arranged at intervals in the second direction;
folding the membrane units to form a membrane sheet group, wherein the plurality of protrusions are located in an interlayer of the membrane sheet group;
arranging a water production separation net on one side surface of the diaphragm group, which is deviated from the two diaphragm layers, wherein the water production separation net is adhered to the diaphragm layers through glue;
laminating a plurality of membrane groups to form a membrane structure, wherein each water production separation net is positioned between two corresponding adjacent membrane groups;
winding a plurality of the membrane structures outside a central tube, wherein the water production barrier net is arranged towards one side of the central tube.
11. The method of claim 10, wherein the step of providing a membrane unit, wherein the membrane unit comprises a membrane body and a plurality of protrusions correspondingly disposed on one side of the membrane body, the membrane body has a first direction and a second direction, and the protrusions are spaced apart from each other in the second direction, further comprises:
providing a membrane body, wherein the membrane body comprises a reverse osmosis membrane or a nanofiltration membrane;
dispensing glue on one side of the membrane body to form the convex parts on one side surface of the membrane body.
12. The method of claim 10, wherein the step of providing a membrane unit, wherein the membrane unit comprises a membrane body and a plurality of protrusions correspondingly disposed on one side of the membrane body, the membrane body has a first direction and a second direction, and the protrusions are spaced apart from each other in the second direction, further comprises:
providing a membrane body, wherein the membrane body comprises a non-woven fabric, and one side surface of the non-woven fabric is integrally formed into a concave-convex surface so as to form the plurality of convex parts.
13. A water purification apparatus comprising the water purification element of claim 9.
14. The water purification apparatus of claim 13, wherein the water purification apparatus is a water purifier.
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| CN202210329906.2A CN114570214A (en) | 2022-03-30 | 2022-03-30 | Membrane structure, water purification element and manufacturing method thereof, and water purification equipment |
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| CN202210329906.2A CN114570214A (en) | 2022-03-30 | 2022-03-30 | Membrane structure, water purification element and manufacturing method thereof, and water purification equipment |
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| JP2000334272A (en) * | 1999-05-31 | 2000-12-05 | Nitto Denko Corp | Spiral type separation membrane element |
| US20120018366A1 (en) * | 2009-02-25 | 2012-01-26 | Buser Mark F | Fluid separation system with reduced fouling |
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