CN114570215A

CN114570215A - Diaphragm structure, water purifying element and manufacturing method thereof, and water purifying equipment

Info

Publication number: CN114570215A
Application number: CN202210329907.7A
Authority: CN
Inventors: 丁纯; 桂鹏; 郑跃东; 张鑫; 黄廷健
Original assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Current assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-06-03

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 used for being wound on the periphery of a central pipe and arranged in a cylindrical shape 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, one sides, facing the center, of the two membrane layers are provided with a plurality of first convex parts, at least one side, located in an interlayer, of the two membrane layers is provided with a plurality of second convex parts, the first convex parts are arranged at intervals in the first direction and used for guiding liquid to flow along the second direction, and the second convex parts are arranged at intervals in the second direction and used for guiding liquid to flow along the direction forming an included angle with the first direction; in the technical scheme of the invention, the filtering efficiency can be improved by arranging the plurality of first convex parts and the plurality of second convex parts for flow guiding; meanwhile, the convenience of rolling the membrane structure is improved, and the qualification rate of products is improved.

Description

Diaphragm structure, water purifying element and manufacturing method thereof, and water purifying equipment

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. In addition, a water production separation net is required to be arranged on the lower surface of the diaphragm, the diaphragm is supported to form a water production flow channel, and pure water is guided. However, the introduction of the raw water screen and the produced water screen also brings about some problems. For example, the contact part of the membrane and the raw water separation net cannot permeate water, so that the effective filtering area of the membrane is reduced, and the introduced water production separation net increases the flow resistance of produced water, generates back pressure and reduces the filtering efficiency of the membrane element. The thicker raw water separation net and the produced water separation net also increase the diameter of the membrane element, and the membrane rolling area is limited. When the membrane element is rolled, the raw water separation net and the produced water separation net must be placed at designed positions, otherwise, the raw water flow passage and the produced water flow passage are blocked, and the filtration efficiency is influenced. In addition, the section of raw water separates the net sharper, and long-term water impact can make the raw water separate the net and take place the aversion, has the risk of fish tail diaphragm.

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 and a produced water separation net are placed, so that the membrane filtering efficiency is reduced, the membrane rolling area is limited, a raw water flow passage and a produced water flow passage are blocked, and membranes are 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, the membrane group includes two membrane layers, where one side of the two membrane layers facing a center of the two membrane layers is provided with a plurality of first protrusions, and at least one side of the two membrane layers located in an interlayer is provided with a plurality of second protrusions, the plurality of first protrusions are spaced apart in the first direction and configured to guide a liquid flowing from one end of the membrane group in the first direction, and the plurality of first protrusions are configured to guide the liquid to flow along at least the second direction, and the plurality of second protrusions are spaced apart in the second direction and configured to guide a liquid flowing from one end of the membrane group in the first direction, and the plurality of second convex parts are used for at least guiding the liquid to flow in a direction forming an included angle with the first direction.

Optionally, two membrane layers of the membrane group are formed by folding the same membrane unit.

Optionally, the membrane layer comprises 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 atmosphere,

the nanofiltration membrane comprises a polyamide film composite nanofiltration membrane.

Optionally, the shape of the plurality of first protrusions comprises a dot shape or a linear shape; and/or the presence of a gas in the gas,

the shape of the plurality of second protrusions includes a dot shape or a linear shape.

Optionally, the plurality of first protrusions include a colloid disposed on a side corresponding to the membrane layer; and/or the presence of a gas in the gas,

the plurality of second convex parts comprise colloids arranged on one side of the corresponding membrane layer.

Optionally, the membrane layer has opposing sides, wherein:

one side of the membrane layer is arranged in a concave-convex surface mode, and the convex part of the membrane layer forms the first convex part; and/or the presence of a gas in the gas,

the other side of the membrane layer is arranged in a concave-convex surface mode, and the convex part of the membrane layer forms the second convex part.

Optionally, the membrane layer comprises a nonwoven fabric.

Optionally, the plurality of first protrusions are divided into a plurality of rows of first protrusion groups along the first direction, and each row of the first protrusion groups includes a plurality of first protrusions arranged at intervals along the second direction.

Optionally, at least a portion of the first protrusions is linear and extends along the second direction, so as to at least guide the liquid to flow along the second direction.

Optionally, among the plurality of second protrusions, at least a portion of the second protrusions are linear and inclined with respect to the first direction, so that the plurality of protrusions are configured to guide the liquid to flow in a direction forming an included angle with the first direction.

Optionally, at least a part of the second protrusions are disposed in a dot shape, so that the second 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; and the number of the first and second groups,

the membrane structure, a plurality of first convex parts of membrane structure are in the membrane group orientation of membrane structure one side of center tube to make at least be close to the membrane group of center tube with form between the center tube and produce the water runner, produce the water runner through the water hole with go out the water runner intercommunication, a plurality of second convex parts of membrane structure are in the intermediate layer of the membrane group of membrane structure, so that form the raw water runner in the intermediate layer of membrane group, wherein the membrane structure is foretell membrane structure.

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 first convex parts and a plurality of second convex parts which are correspondingly arranged on two side surfaces 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, the plurality of first convex parts are arranged at intervals in the first direction, and the plurality of second convex parts are arranged at intervals in the second direction;

folding the membrane unit to form a membrane group, wherein the second protrusions are located in an interlayer of the membrane group, and the first protrusions are located on one outer side of the membrane group;

and winding the membrane assembly outside the central tube, wherein the side of the membrane assembly provided with the plurality of first convex parts 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 first protrusions and a plurality of second protrusions are disposed on two sides 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, the plurality of first protrusions are disposed at intervals in the first direction, and the plurality of second protrusions are disposed at intervals in the second direction", and before the step of:

providing a membrane body, wherein the membrane body comprises a reverse osmosis membrane or a nanofiltration membrane;

dispensing is respectively carried out on two sides of the diaphragm body, so that the plurality of first convex parts and the plurality of second convex parts are respectively formed on the surfaces of the two sides of the diaphragm body.

providing a membrane body, wherein the membrane body comprises non-woven fabrics, and the surfaces of two sides of the non-woven fabrics are respectively integrally formed into concave-convex surfaces so as to respectively form the plurality of first convex parts and the plurality of second convex parts.

The invention also provides water purification equipment which comprises a water purification element, wherein the water purification element comprises the water purification element.

Optionally, the water purification apparatus is a water purifier.

In the technical scheme of the invention, the diaphragm structure comprises at least one diaphragm group, each diaphragm group comprises two diaphragm layers, and one side of each of the two diaphragm layers, which faces the center of the diaphragm layer, is provided with a plurality of first convex parts for guiding at least the liquid to flow along the second direction; a plurality of second convex parts are arranged on at least one side of the two membrane layers in the interlayer and used for guiding the liquid to flow in a direction forming an included angle with the first direction; the arrangement of the first convex parts and the second convex parts has diversity, so that the flow direction of the liquid on the membrane body is also diversified, and a rich flow channel structure is obtained, thereby not only improving the pollution resistance of the membrane unit, but also improving the desalination rate of the first cup of water; meanwhile, the plurality of first convex parts and the plurality of second convex parts can support the membrane group to form a water production flow channel and a raw water flow channel between the membrane layer and the central pipe and in the interlayers of the two membrane layers respectively, so that pure water and raw water diversion is realized, the plurality of first convex parts and the plurality of second convex parts can replace the existing water production separation net and raw water separation net, and therefore, the filtering area and the filling area of the membrane structure can be increased, the filtering efficiency is improved, the rolling of the membrane structure is more convenient, and the qualification rate of products is improved; moreover, the water production separation net and the raw water separation net are replaced, so that the structure of the water purification element is simplified, and the cost is saved; the problem that the raw water flow channel is blocked due to the displacement of the water production separation net and the raw water separation net is also solved; simultaneously avoid the diaphragm structure by raw water separates the fish tail of net, improves the life of diaphragm structure.

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 structural diagram of an embodiment of the membrane layer (first protrusion) in FIG. 1;

FIG. 3 is a schematic structural diagram of a second embodiment of the membrane layer (first protrusion) in FIG. 1;

FIG. 4 is a schematic structural diagram of a third embodiment of the membrane layer (first protrusion) in FIG. 1;

FIG. 5 is a schematic structural diagram of a fourth embodiment of the membrane layer (first protrusion) in FIG. 1;

FIG. 6 is a schematic structural diagram of a fifth embodiment of the membrane layer (first protrusion) in FIG. 1;

FIG. 7 is a schematic structural diagram of a sixth embodiment of the membrane layer (second protrusion) in FIG. 1;

FIG. 8 is a schematic structural diagram of a seventh embodiment of the membrane layer (second protrusion) in 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:

reference numerals	Name (R)	Reference numerals	Name(s)
				1000	Water purification element	13	A plurality of second convex parts
100	Diaphragm structure	131	Second convex part
				1	Membrane group	14	Diaphragm unit
11	Membrane layer	F1	A first direction
				12	A plurality of first convex parts	F2	Second direction
121	First convex part	200	Central tube

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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope 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 for explaining the relative position relationship between the components, the motion situation, and the like under a certain posture (as shown in the drawing), and if the certain 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 of the 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. In addition, a water production separation net is required to be arranged on the lower surface of the diaphragm, the diaphragm is supported to form a water production flow channel, and pure water is guided. However, the introduction of the raw water screen and the produced water screen also brings some problems. For example, the contact part of the membrane and the raw water separation net cannot permeate water, so that the effective filtering area of the membrane is reduced, and the introduced water production separation net increases the flow resistance of produced water, generates back pressure and reduces the filtering efficiency of the membrane element. The thicker raw water separation net and the produced water separation net also increase the diameter of the membrane element, and the membrane rolling area is limited. When the membrane element is rolled, the raw water separation net and the produced water separation net must be placed at designed positions, otherwise, the raw water flow passage and the produced water flow passage are blocked, and the filtration efficiency is influenced. In addition, the section of the raw water separation net is sharp, and the raw water separation net can be displaced by long-term water flow impact, so that the risk of scratching the diaphragm is caused.

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 to form a cylindrical shape, the membrane structure 100 includes at least one membrane sheet 1, the width of the membrane sheet 1 is a first direction F1, the length of the membrane sheet 1 is a second direction F2, the membrane sheet 1 includes two membrane sheets 11, one side of the two membrane sheets 11 facing the center thereof is provided with a plurality of first protrusions 12, at least one side of the two membrane sheets 11 in the sandwich is provided with a plurality of second protrusions 13, the plurality of first protrusions 12 are spaced apart in the first direction F1 to guide the liquid flowing from one end of the membrane sheet 1 in the first direction F1, the plurality of first protrusions 12 are configured to guide the liquid to flow along at least the second direction F2, and the plurality of second protrusions 13 are spaced apart in the second direction F2, the second protrusions 13 are used for guiding the liquid flowing from one end of the membrane assembly 1 in the first direction F1, and at least guiding the liquid to flow in a direction forming an included angle with the first direction F1.

In the technical solution of the present invention, the diaphragm structure 100 includes at least one diaphragm group 1, each diaphragm group 1 includes two diaphragm layers 11, and a plurality of first protrusions 12 are disposed on one sides of the two diaphragm layers 11 toward a center thereof, so as to at least guide the liquid to flow along the second direction F2; a plurality of second convex parts 13 are arranged on at least one side of the two membrane layers 11 in the interlayer, and are used for at least guiding the liquid to flow in a direction forming an included angle with the first direction F1; due to the fact that the plurality of first convex portions 12 and the plurality of second convex portions 13 are arranged in a diversified manner, the flowing directions of the liquid on the membrane body are also diversified, and therefore a rich flow channel structure is obtained, the anti-pollution performance of the membrane unit 14 can be improved, and the desalination rate of the first cup of water can be improved; meanwhile, the plurality of first convex parts 12 and the plurality of second convex parts 13 which are arranged can support the membrane group 1 so as to respectively form a water production flow channel and a raw water flow channel between the membrane layer 11 and the central pipe 200 and in interlayers of the two membrane layers 11, so that the flow guidance of pure water and raw water is realized, and the plurality of first convex parts 12 and the plurality of second convex parts 13 which are arranged can replace the existing water production separation net and raw water separation net, so that the filtering area and the filling area of the membrane structure 100 can be increased, the filtering efficiency is improved, the rolling of the membrane structure 100 is facilitated, and the qualified rate of products is improved; moreover, the water production separation net and the raw water separation net are replaced, so that the structure of the water purifying element is simplified, and the cost is saved; the problem that the raw water flow channel is blocked due to the displacement of the water production separation net and the raw water separation net is also solved; meanwhile, the membrane structure 100 is prevented from being scratched by the raw water separation net, and the service life of the membrane structure 100 is prolonged.

Specifically, the two diaphragm layers 11 of the diaphragm group 1 are formed by folding the same diaphragm unit 14; in this embodiment, the diaphragm units 14 are folded to form two laminated diaphragm layers 11, so that the number of the diaphragm units 14 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 first protrusion 121 is not limited, specifically, referring to fig. 2, 4 and 6, in the first embodiment, the third embodiment and the fifth embodiment, the shape of the first protrusion 121 is linear, and it should be noted that the first protrusion 121 is linear, so that the flow of the liquid is more accurate, and the flow guiding efficiency is improved; further referring to fig. 3 and 5, in the second embodiment and the fourth embodiment, the first protrusion 121 is in a dot shape, and it should be noted that, by setting the first protrusion 121 to be in a dot shape, not only the first protrusion 121 is easier to manufacture, but also the liquid is guided in a variety of ways, and the richness of the flow channel structure is improved.

The shape of the second protrusion 131 is not limited, and specifically, referring to fig. 7, in a sixth embodiment, the shape of the second protrusion 131 is linear, it should be noted that the second protrusion 131 is linear, so that the flow of the liquid is more accurate, and the flow guiding efficiency is improved; further referring to fig. 8, in the seventh embodiment, the second protrusion 131 is in a dot shape, and it should be noted that, the second protrusion 131 is in a dot shape, so that the second protrusion 131 is easier to manufacture, and the liquid flow guiding is diversified, thereby improving the richness of the flow channel structure.

Specifically, in the present embodiment, the two technical features are provided at the same time, that is, the shapes of the plurality of first protrusions 12 and the plurality of second protrusions 13 include a dot shape or a linear shape; the shape of the first protrusion 121 and the second protrusion 131 can be adjusted by the user according to the needs of the usage scenario, so that the applicability of the diaphragm structure 100 is improved.

In the present invention, in the first to seventh embodiments, the plurality of first protrusions 12 include the colloid disposed on one side corresponding to the membrane layer 11, that is, the colloid is disposed to form the plurality of first protrusions 121, so that the operation is simple and the implementation is easy, and the first protrusions 121 can be formed after the colloid is cured, so that the forming time is short and the forming speed is fast.

In the present invention, in the first to seventh embodiments, the plurality of second protrusions 13 includes the colloid disposed on one side corresponding to the membrane layer 11, that is, the colloid is disposed to form the plurality of second protrusions 131, the operation is simple, the implementation is easier, and the second protrusions 131 can be formed after the colloid is cured, the forming time is short, and the forming speed is fast.

It should be noted that the two technical features may be set alternatively or simultaneously, and specifically, in the first to fourth embodiments, the two technical features are set simultaneously; that is, a plurality of first convex parts 12 are including locating the colloid that corresponds one side of diaphragm layer 11, a plurality of second convex parts 13 are including locating the colloid that corresponds the opposite side of diaphragm layer 11, through set up the both sides surface of diaphragm layer 11 the colloid is in order to form first convex part 121 with second convex part 131, easy operation realizes more easily, moreover can form after the colloid solidification first convex part 121 with second convex part 131, and the molding time is short, fast.

Specifically, the material of colloid includes epoxy glue, polyurethane glue, amino resin glue, phenolic resin glue, acrylic resin glue, furan resin glue, resorcinol-formaldehyde resin glue, xylene-formaldehyde resin glue, unsaturated polyester glue, compound resin glue, polyimide glue and at least one of urea-formaldehyde resin glue, so, make the colloid solidification is fast, and the shaping time is short, thereby improves diaphragm structure 100's preparation efficiency.

In other embodiments of the present invention, one side of the membrane layer 11 is provided with a concave-convex surface, and the convex part of the membrane layer forms the first convex part 121; that is, the first protrusion 121 and the diaphragm layer 11 are integrally formed, which not only simplifies the manufacturing process of the diaphragm structure 100, but also improves the manufacturing efficiency of the diaphragm structure 100; but also saves the production materials and reduces the production cost.

In other embodiments of the present invention, the other side of the membrane layer 11 is provided with a concave-convex surface, and the convex part of the concave-convex surface forms the second convex part 131; that is, the second protrusion 131 is integrally formed with the diaphragm layer 11, which not only simplifies the manufacturing process of the diaphragm structure 100, but also improves the manufacturing efficiency of the diaphragm structure 100; but also saves the production materials and reduces the production cost.

It should be noted that the two technical features may be alternatively or simultaneously provided, specifically, in some embodiments, the two technical features are simultaneously provided, that is, both side surfaces of the membrane layer 11 are concave-convex surfaces, a convex portion on one side surface forms the first convex portion 121, and a convex portion on the other side surface forms the second convex portion 131, that is, the first convex portion 121 and the second convex portion 131 are integrally formed with the membrane layer 11, which not only simplifies the manufacturing process of the membrane structure 100, thereby improving the manufacturing efficiency of the membrane structure 100; but also saves the production materials and reduces the production cost.

Specifically, the membrane layer 11 includes a non-woven fabric, and it should be noted that 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 11, and the surfaces of both sides of the non-woven fabric are formed into concave-convex surfaces; the convex part on one side forms the first convex part 121, and the convex part on the other side forms the second convex part 131, so that the manufacturing process of the diaphragm structure 100 is simplified, and the manufacturing efficiency of the diaphragm structure 100 is improved; but also saves the production materials and reduces the production cost.

In the present invention, referring to fig. 2 to 5, the plurality of first protrusions 12 are divided into a plurality of rows of first protrusion sets along the first direction F1, each row of the first protrusion sets includes a plurality of first protrusions 121 spaced along the second direction F2; the two adjacent rows of the first protrusion groups guide the liquid to flow along the second direction F2, and the distance between the two adjacent rows of the first protrusion groups and the distance between two adjacent first protrusions 121 are adjustable, so that both the flow rate and the flow rate of the liquid are adjustable, and the applicability of the membrane structure 100 is improved.

Specifically, referring to fig. 3 and 4 again, the first protrusions 121 on two adjacent first protrusion sets are arranged in a staggered manner; so that the liquid can accurately flow along the second direction F2, the split flow of the liquid is reduced, and the diversion rate of the liquid is improved.

In the present invention, referring to fig. 6, at least a portion of the first protrusions 12 is linear and extends along the second direction F2 to guide the liquid to flow along the second direction F2, so that the liquid can flow along the second direction F2 accurately, and the diversion of the liquid is reduced, thereby increasing the diversion rate of the liquid.

In the present invention, further referring to fig. 7, at least a portion of the second protrusions 131 of the plurality of second protrusions 13 is linear and inclined to the first direction F1, such that the plurality of protrusions are configured to at least guide the liquid to flow in a direction forming an included angle with the first direction F1; the liquid is guided by the plurality of second convex parts 13, and the structure is simple.

In the present invention, the plurality of second protrusions 13 are divided into a plurality of rows of second protrusion 131 groups along the second direction F2, each row of the second protrusion 131 groups including a plurality of second protrusions 131 arranged at intervals along the first direction F1; the plurality of second protrusions 13 are divided into a plurality of rows of second protrusion 131 groups, the flow between two adjacent rows of second protrusion 131 groups can be guided, and each second protrusion 131 can change the flow direction of the liquid to be at least inclined from the first direction F1, so that the flow direction of the liquid has multi-directional characteristics, and a rich flow channel structure is obtained.

In the present invention, referring to fig. 8, at least a portion of the second protrusions 131 of the plurality of second protrusions 13 is disposed in a dot shape, so that the second protrusions 131 can change the flow direction of the liquid to be disposed obliquely to the first direction F1; the second protrusions 131 are arranged in a dot shape, so that the liquid has a plurality of flow directions after flowing through the second protrusions 131, thereby increasing the multi-directional flow direction of the liquid, and further obtaining a rich flow channel structure.

The invention further provides a water purifying element 1000, please refer to fig. 9, wherein the water purifying element 1000 includes a central tube 200 and a membrane structure 100, the central tube 200 extends along a first direction F1, a water outlet channel is formed therein, 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 first protrusions 12 of the membrane structure 100 are positioned on one side of the membrane group 1 of the membrane structure 100 facing the central pipe 200, so that a water production flow channel is formed between the membrane group 1 at least close to the central pipe 200 and the central pipe 200, the water production flow channel is communicated with the water outlet flow channel through the water through hole, and the second protrusions 13 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 the membrane group 1; it should be noted that, in this embodiment, 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 also has all the beneficial effects brought by all the embodiments, and details are not repeated herein. In the using process, raw water enters the raw water flow channel in the interlayer of the membrane group 1 along the first direction F1, and is guided by the raw water flow channel, the raw water is filtered by the membrane layer 11 to generate pure water, the pure water permeates to one side of the membrane group 1, is guided to the central pipe 200 along the second direction F2 by the water generation flow channel, and flows out from the water outlet of the central pipe 200, so that the water purifying function of the water purifying element 1000 is realized.

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 first convex parts and a plurality of second convex parts which are correspondingly arranged on two side surfaces 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, the plurality of first convex parts are arranged at intervals in the first direction, and the plurality of second convex parts are arranged at intervals in the second direction;

s40: folding the membrane unit to form a membrane group, wherein the second protrusions are located in an interlayer of the membrane group, and the first protrusions are located on one outer side of the membrane group;

s50: and winding the membrane assembly outside the central tube, wherein the side of the membrane assembly provided with the plurality of first convex parts 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; because the membrane unit is provided with the plurality of first convex parts and the plurality of second convex parts, after the membrane group is wound outside the central pipe, a raw water flow channel is formed in the interlayer of the membrane group, and a water production flow channel is formed between the membrane group close to the central pipe and the central pipe, so that 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 film unit, wherein the film unit includes a film body, and a plurality of first protrusions and a plurality of second protrusions are disposed on two sides of the film body, the length direction of the film body is a first direction, the width direction is a second direction, the plurality of first protrusions are disposed at intervals in the first direction, and the plurality of second protrusions are disposed at intervals in the second direction, further includes:

s10: providing a membrane body, wherein the membrane body comprises a reverse osmosis membrane or a nanofiltration membrane;

s20: dispensing is respectively carried out on two sides of the diaphragm body, so that the plurality of first convex parts and the plurality of second convex parts are respectively formed on the surfaces of the two sides of the diaphragm body.

In this embodiment, the membrane body is made of a reverse osmosis membrane or a nanofiltration membrane, and the two sides of the membrane body are respectively subjected to dispensing to form the plurality of first convex parts and the plurality of second convex parts on the surfaces of the two sides of the membrane body, so that the operation is simple and the implementation is easier; and the colloid can form the plurality of first convex parts and the plurality of second convex parts after being solidified, and has short forming time and high speed.

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 film sheet unit, wherein the film sheet unit includes a film sheet body, and a plurality of first convex portions and a plurality of second convex portions are provided corresponding to two sides of the film sheet body, a length direction of the film sheet body is a first direction, a width direction of the film sheet body is a second direction, the plurality of first convex portions are provided at intervals in the first direction, and the plurality of second convex portions are provided at intervals in the second direction, further includes:

s10': providing a membrane body, wherein the membrane body comprises non-woven fabrics, and the surfaces of two sides of the non-woven fabrics are respectively integrally formed into concave-convex surfaces so as to respectively form the plurality of first convex parts and the plurality of second convex parts.

In this embodiment, the membrane body is made of non-woven fabric, and the surfaces of the two sides of the non-woven fabric are integrally formed into concave-convex surfaces respectively; the nonwoven fabric has a filtering function of a common membrane, and thus can be used as the membrane layer; forming concave-convex surfaces on two side surfaces of the non-woven fabric to form the plurality of first convex parts and the plurality of second convex parts respectively, 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 purifying apparatus is configured as a water purifying apparatus, that is, the water purifying apparatus is provided with the water purifying element 1000, that is, the convex portions on the surfaces of the two sides of the membrane layer 11 respectively support the water producing flow channel formed between the membrane layer 11 and the central tube 200, and the raw water flow channel is formed between the membrane layer 11 and the adjacent membrane layer 11, in the use process, raw water enters the raw water flow channel in the interlayer of the membrane group along the first direction, is guided by the raw water flow channel, is filtered by the membrane layer 11 to generate pure water, the pure water permeates to one side of the membrane group, is guided to the central tube 200 along the second direction by the water producing flow channel, and flows out from the water outlet of the central tube 200, so as to realize the water purifying function of the water purifying element 1000, and thus the convex portions can replace the existing water producing separation net and raw water separation net, therefore, the filtering area and the filling area of the membrane structure 100 can be increased, so that the filtering efficiency is improved, the membrane structure 100 can be rolled more conveniently, and the qualification rate of products is improved; moreover, the water production separation net and the raw water separation net are replaced, so that the structure of the water purifying element 1000 is simplified, and the cost is saved; the problem that the raw water flow channel is blocked due to the displacement of the water production separation net and the raw water separation net is also solved; meanwhile, the membrane structure 100 is prevented from being scratched by the raw water separation net, and the service life of the membrane structure 100 is prolonged.

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

1. A membrane structure is used for being wound on the periphery of a central pipe and arranged in a cylindrical shape, and is characterized by comprising at least one membrane group, wherein 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 first convex parts are arranged on one sides of the two membrane layers towards the center of the two membrane layers, a plurality of second convex parts are arranged on at least one sides of the two membrane layers in an interlayer, the first convex parts are arranged at intervals in the first direction and used for guiding liquid flowing in from one end of the membrane group in the first direction, the first convex parts are used for guiding the liquid to flow along the second direction, the second convex parts are arranged at intervals in the second direction and used for guiding the liquid flowing in from one end of the membrane group in the first direction, and the plurality of second convex parts are used for at least guiding the liquid to flow in a direction forming an included angle with the first direction.

2. The diaphragm structure of claim 1 wherein both diaphragm layers of said diaphragm assembly are formed by folding over the same diaphragm unit.

3. The membrane structure of claim 1, wherein the membrane layer comprises 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,

5. The diaphragm structure of claim 1, wherein the shape of the plurality of first protrusions comprises a dot shape or a line shape; and/or the presence of a gas in the gas,

6. The membrane structure of claim 1, wherein the first plurality of protrusions comprise a gel disposed on a side corresponding to the membrane layer; and/or the presence of a gas in the gas,

7. The membrane structure of claim 1, wherein the membrane layer has opposing sides, wherein:

one side of the membrane layer is arranged in a concave-convex surface mode, and the convex part of the membrane layer forms the first convex part; and/or the presence of a gas in the atmosphere,

8. The membrane structure of claim 7, wherein the membrane layer comprises a nonwoven fabric.

9. The diaphragm structure of claim 1 wherein said plurality of first protrusions are grouped into rows of first protrusion sets along said first direction, each row of said first protrusion sets comprising a plurality of first protrusions spaced apart along said second direction.

10. The diaphragm structure of claim 1 wherein at least some of said first protrusions are linear and extend in said second direction to direct at least said liquid to flow in said second direction.

11. The diaphragm structure of claim 1 wherein at least some of said second protrusions are linear and are disposed at an angle to said first direction such that said plurality of protrusions are disposed to direct at least said liquid to flow in a direction that is at an angle to said first direction.

12. The diaphragm structure of claim 1, wherein at least some of the second protrusions are disposed in a dot shape such that the second protrusions can change the flow direction of the liquid to be disposed obliquely to the first direction.

13. A water purification unit, comprising:

the membrane structure according to any one of claims 1 to 12, wherein the first protrusions of the membrane structure are located on the side of the membrane group of the membrane structure facing the central pipe, so that a water production flow passage is formed between the membrane group at least close to the central pipe and the central pipe, the water production flow passage is communicated with the water outlet flow passage through the water through holes, and the second protrusions of the membrane structure are located in the interlayer of the membrane group of the membrane structure, so that a raw water flow passage is formed in the interlayer of the membrane group.

14. A manufacturing method of a water purifying element is characterized by comprising the following steps:

15. The method of claim 14, wherein the step of providing a membrane unit, wherein the membrane unit comprises a membrane body, and a plurality of first protrusions and a plurality of second protrusions are disposed on two sides of the membrane body, wherein a longitudinal direction of the membrane body is a first direction, a width direction of the membrane body is a second direction, the plurality of first protrusions are disposed at intervals in the first direction, and the plurality of second protrusions are disposed at intervals in the second direction, further comprises:

16. The method of claim 14, wherein the step of providing a membrane unit, wherein the membrane unit comprises a membrane body, and a plurality of first protrusions and a plurality of second protrusions are disposed on two sides of the membrane body, wherein a longitudinal direction of the membrane body is a first direction, a width direction of the membrane body is a second direction, the plurality of first protrusions are disposed at intervals in the first direction, and the plurality of second protrusions are disposed at intervals in the second direction, further comprises:

17. A water purification apparatus comprising the water purification element of claim 13.

18. The water purification apparatus of claim 17, wherein the water purification apparatus is a water purifier.