CN116099366A

CN116099366A - Flat membrane component and filter element

Info

Publication number: CN116099366A
Application number: CN202211540379.6A
Authority: CN
Inventors: 刘社军; 曹铭津; 张椿林; 张鸣戈
Original assignee: Foshan Xinyao Environmental Protection Technology Co Ltd
Current assignee: Foshan Xinyao Environmental Protection Technology Co Ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-05-12

Abstract

The invention provides a flat membrane component and a filter element, and relates to the field of filtering equipment. The flat film is folded to enable the flat film to be divided into a plurality of flat film units by folds, and the plurality of flat film units are stacked along a first direction to form a cuboid; the supporting layers corresponding to the two adjacent flat membrane units are surrounded with pure water flow channels, and the desalting layers corresponding to the two adjacent flat membrane units are surrounded with waste water and raw water flow channels; the flat membrane is adhered to the support layer at the first end and the second end of the pure water flow channel in the second direction; the flat membrane is opened corresponding to the first end of the wastewater and raw water flow channel in the second direction, and the desalination layer is bonded at the second end in the second direction; the first end of the pure water flow channel in the third direction is open, and the second end of the pure water flow channel in the third direction is limited by the supporting layer; the wastewater and raw water flow channels are defined by a desalination layer at a first end in a third direction and open at a second end in the third direction. The flat membrane component improves the space occupancy rate of the flat membrane and reduces the manufacturing difficulty of the flat membrane component.

Description

Flat membrane component and filter element

Technical Field

The application relates to the field of filter equipment, in particular to a flat membrane module and a filter element.

Background

The filter element generally comprises a flat membrane component, wherein the flat membrane component comprises a plurality of flat membranes, pure water diversion cloth, a concentrated water separation net and a central pipe, the flat membranes comprise supporting layers and desalting layers which are mutually attached, and the desalting layers of two adjacent flat membranes are bonded in a gluing mode to form a first flow channel; the desalination layers in two adjacent filter units are bonded in a gluing mode to form a second flow channel, a concentrated water separation net is arranged in the first flow channel, and pure water diversion cloth is arranged in the second flow channel. And then rolling a plurality of flat membranes, pure water diversion cloth and concentrated water isolation net around the central pipe to form the flat membrane component.

However, in the existing flat membrane module, the communication between the pure water flow channel and the outside needs to be achieved by using the central tube, which makes the space occupation rate of the flat membrane in the flat membrane module low, thereby affecting the filtering capability of the flat membrane module.

In addition, the process of winding a plurality of flat membranes, pure water diversion cloth and concentrated water isolation net around the central tube is complex, and the manufacturing difficulty is high.

Disclosure of Invention

In view of this, this application provides a dull and stereotyped membrane module and filter core, and dull and stereotyped membrane module includes dull and stereotyped membrane, and dull and stereotyped membrane is folding to make dull and stereotyped membrane divide into a plurality of dull and stereotyped membrane units by the crease, and dull and stereotyped membrane includes supporting layer and desalination layer, and the supporting layer that two adjacent dull and stereotyped membrane units correspond encloses and establishes out the pure water runner, two adjacent dull and stereotyped membrane units correspond the desalination layer encloses and establishes out waste water and raw water runner. Because the flat membrane unit is formed by folding a flat membrane, the first end of the wastewater and raw water flow channel in the third direction is limited by the desalting layer, the second end of the pure water flow channel in the third direction is limited by the supporting layer, and the flat membrane is not required to be bonded to seal the first end of the wastewater and raw water flow channel in the third direction and the second end of the pure water flow channel in the third direction. The mode that this dull and stereotyped membrane module bonds after folding forms waste water and raw water runner and pure water runner through with dull and stereotyped membrane, can realize waste water and raw water runner and pure water runner's external intercommunication, so, need not to set up the center tube in the dull and stereotyped membrane module, promoted the space occupancy of dull and stereotyped membrane in the dull and stereotyped membrane module, and then promoted the filtration capacity of dull and stereotyped membrane module.

In addition, the flat membrane is in a cuboid shape after being folded, and the wastewater, raw water and pure water channels formed by bonding the flat membrane can meet the filtering requirement, so that the flat membrane assembly does not need to be rolled, and the manufacturing difficulty of the flat membrane assembly is reduced.

According to an aspect of the present application, there is provided a flat sheet membrane module including a flat sheet membrane folded such that the flat sheet membrane is divided into a plurality of flat sheet membrane units by folds, the plurality of flat sheet membrane units being stacked in a first direction to be rectangular parallelepiped, the plurality of flat sheet membrane units being perpendicular to the first direction;

the flat membrane comprises a supporting layer and a desalting layer, wherein pure water flow channels are defined by the supporting layers corresponding to two adjacent flat membrane units, and wastewater and raw water flow channels are defined by the desalting layers corresponding to two adjacent flat membrane units;

the support layers corresponding to the two flat membrane units are bonded at the first end of the pure water flow channel in the second direction, the support layers corresponding to the two flat membrane units are bonded at the second end of the pure water flow channel in the second direction, the waste water and the first end of the raw water flow channel in the second direction are opened, the desalination layers corresponding to the two flat membrane units are bonded at the second end of the waste water and the raw water flow channel in the second direction, and the first end of the pure water flow channel in the second direction and the first end of the waste water and the raw water flow channel in the second direction are positioned at the same end in the second direction;

a first end of the pure water flow passage in a third direction is open, and a second end of the pure water flow passage in the third direction is defined by the support layer; a first end of the wastewater and raw water flow passage in the third direction is defined by the desalination layer, a second end of the wastewater and raw water flow passage in the third direction is open, and the first end of the pure water flow passage in the third direction and the first end of the wastewater and raw water flow passage in the third direction are positioned at the same end in the third direction;

the first direction, the second direction and the third direction are perpendicular to each other.

Preferably, the bonding parts of the flat membrane modules and the adhesive layer are arranged on the end part of the supporting layer, which is close to the first end of the pure water flow channel in the second direction, and the bonding parts corresponding to the two adjacent flat membrane units are bonded;

the adhesive layer is arranged at the end part of the flat film, which is opposite to the adhesive layer, and the projection of the flat film on the adhesive layer is positioned in the adhesive layer.

Preferably, the crease is configured to be heat set;

the flat membrane component further comprises pure water diversion cloth, and the pure water diversion cloth is arranged in any pure water flow channel.

Preferably, the flat membrane module further comprises pure water diversion cloth and a concentrated water isolation net, the pure water diversion cloth is arranged in any pure water flow channel, and the concentrated water isolation net is arranged in any waste water and raw water flow channel.

Preferably, the flat membrane module further comprises a front carbon sheet and pure water diversion cloth, the pure water diversion cloth is arranged in any pure water flow channel, and the front carbon sheet is arranged in any waste water and raw water flow channel.

Preferably, the flat membrane module further comprises a rear carbon plate and a dense water separation net, wherein the rear carbon plate is arranged in any pure water flow channel, and the dense water separation net is arranged in any waste water and raw water flow channel.

Preferably, the flat membrane module further comprises a front carbon plate and a rear carbon plate, wherein the rear carbon plate is arranged in any one of the pure water flow channels, and the front carbon plate is arranged in any one of the waste water and raw water flow channels.

Preferably, the flat membrane assembly further comprises a pre-filtering mechanism and pure water guide cloth, wherein the pre-filtering mechanism comprises a PP cotton sheet and a pre-carbon sheet which are mutually attached;

the pure water diversion cloth is arranged in any pure water flow channel, and the pre-filtering mechanism is arranged in any waste water and raw water flow channel.

Preferably, the flat membrane assembly further comprises a pre-filtering mechanism and a post-carbon sheet, wherein the pre-filtering mechanism comprises a PP cotton sheet and a pre-carbon sheet which are attached to each other;

the front-end filtering mechanism is arranged in any one of the wastewater and raw water flow channels, and the rear-end carbon sheet is arranged in any one of the pure water flow channels.

According to another aspect of the application, there is provided a filter element, the filter element includes the above-mentioned flat membrane assembly, the filter element further includes a first end cover and a second end cover, the first end cover and the second end cover are respectively disposed at two ends of the flat membrane in the second direction, the first end cover has a water outlet, the water outlet is communicated with the first end of the wastewater and raw water runner in the second direction, and the viscose layer is disposed between the second end cover and the flat membrane.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic structural view of a flat sheet film according to an embodiment of the present invention after being folded;

FIG. 2 shows a schematic structural view of a flat sheet membrane module;

FIG. 3 shows a schematic view of the location of glue lines on a flat sheet membrane module;

FIG. 4 shows a schematic perspective view of a first embodiment of a flat sheet membrane module;

FIG. 5 shows an exploded view of a first embodiment of a flat sheet membrane module;

FIG. 6 shows a schematic perspective view of a second embodiment of a flat sheet membrane module;

FIG. 7 shows an exploded view of a second embodiment of a flat sheet membrane module;

FIG. 8 shows a schematic perspective view of a third embodiment of a flat sheet membrane module;

FIG. 9 shows an exploded view of a third embodiment of a flat sheet membrane module;

FIG. 10 shows a schematic of a perspective mechanism of a fourth embodiment of a flat sheet membrane module;

FIG. 11 shows an exploded view of a fourth embodiment of a flat sheet membrane module;

FIG. 12 shows a schematic of a stereoscopic mechanism of a fifth embodiment of a flat sheet membrane module;

FIG. 13 shows an exploded view of a fifth embodiment of a flat sheet membrane module;

FIG. 14 shows a schematic of a stereoscopic mechanism of a sixth embodiment of a flat sheet membrane module;

FIG. 15 shows an exploded view of a sixth embodiment of a flat sheet membrane module;

FIG. 16 shows a schematic of a stereoscopic mechanism of a seventh embodiment of a flat sheet membrane module;

FIG. 17 shows an exploded view of a seventh embodiment of a flat sheet membrane module;

FIG. 18 shows a schematic view of water flow with the flat membrane module in use;

fig. 19 shows a schematic structural view of the filter cartridge.

Icon: 1-a flat sheet membrane; 11-a support layer; 12-a desalting layer; 13-a flat membrane unit; 14-pure water flow channel; 15-a waste water and raw water runner; 16-an adhesive part; 2-pure water diversion cloth; 3-a concentrated water screen; 4-a front carbon plate; 5-post carbon plate; 6-PP cotton sheets; 7-a first end cap; 71-a water outlet; 8-a second end cap.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, apparatus, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be apparent after an understanding of the present disclosure. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but rather, obvious variations may be made upon an understanding of the present disclosure, other than operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided solely to illustrate some of the many possible ways of implementing the methods, devices, and/or systems described herein that will be apparent after a review of the disclosure of the present application.

Throughout the specification, when an element (such as a layer, region or substrate) is referred to as being "on"

Another element "on", "connected to" another element, "coupled to" another element, "in" another element

When an element is "on" or "overlying" another element, it can be directly "on," "connected 5 to" another element, "joined to" another element, "on" or "overlying" the other element "

Another element, or there may be one or more other elements interposed therebetween. In contrast, when an element is referred to as being "directly on," directly connected to, "or" directly coupled to, "another element, directly on," or "directly covering" the other element, there may be no other element intervening therebetween.

0 as used herein, the term "and/or" includes any one of the listed items and

any combination of any two or more.

Although terms such as "first," "second," and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections

Are not limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, at no point

A first member, component, region, layer or section discussed in the examples described herein could also be termed a second member, component, region, layer or section without departing from the teachings of the examples.

For ease of description, a material such as "above" … …, "upper," "at … …," may be used herein

The spatial relationship terms below "and" lower "are used to describe the relationship of one element to another 0 element as illustrated in the figures. Such spatially relative terms are intended to encompass orientations other than those depicted in the figures

In addition, different orientations of the device in use or operation are also encompassed. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to another element would then be oriented "below" or "lower" relative to the other element. Thus, the term "above … …" is in accordance with

The spatial orientation of the device includes both "above … …" and "below … …". The 5 device may also be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and will align

The spatially relative terms are used herein for their corresponding interpretation.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. Singular forms also are intended to include plural forms unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" are intended to specify the presence of stated features, integers, operations, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, and/or groups thereof.

Variations from the shapes of the illustrations as a result, of manufacturing techniques and/or tolerances, are to be expected. Accordingly, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shapes that occur during manufacture.

The features of the examples described herein may be combined in various ways that will be apparent after an understanding of the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible as will be apparent after an understanding of the present disclosure.

According to an aspect of the present application, there is provided a flat sheet membrane module, as shown in fig. 1 to 18, the flat sheet membrane module including a flat sheet membrane 1, the flat sheet membrane 1 being folded such that the flat sheet membrane 1 is divided into a plurality of flat sheet membrane units 13 by folds, the plurality of flat sheet membrane units 13 being stacked in a rectangular parallelepiped along a first direction L1, the plurality of flat sheet membrane 1 being all perpendicular to the first direction L1;

the flat membrane 1 comprises a supporting layer 11 and a desalting layer 12, wherein pure water flow channels 14 are formed by surrounding the supporting layer 11 corresponding to two adjacent flat membrane units 13, and wastewater and raw water flow channels 15 are formed by surrounding the desalting layer 12 corresponding to two adjacent flat membrane units 13;

the supporting layers 11 corresponding to the two flat membrane units 13 are bonded at the first end of the corresponding pure water flow channel 14 in the second direction L2, the supporting layers 11 corresponding to the two flat membrane units 13 are bonded at the second end of the corresponding pure water flow channel 14 in the second direction L2, the waste water is opened at the first end of the raw water flow channel 15 in the second direction L2, the corresponding waste water is bonded at the second end of the raw water flow channel 15 in the second direction L2, the desalination layers 12 corresponding to the two flat membrane units 13 are bonded at the first end of the pure water flow channel 14 in the second direction L2 and the first end of the waste water and the raw water flow channel 15 in the second direction L2 are positioned at the same end of the raw water flow channel 15 in the second direction L2;

the first end of the pure water flow path 14 in the third direction L3 is open, and the second end of the pure water flow path 14 in the third direction L3 is defined by the support layer 11; a first end of the wastewater and raw water flow path 15 in the third direction L3 is defined by the desalination layer 12, a second end of the wastewater and raw water flow path 15 in the third direction L3 is open, and a first end of the pure water flow path 14 in the third direction L3 and a first end of the wastewater and raw water flow path 15 in the third direction L3 are located at the same end in the third direction L3; the first direction L1, the second direction L2 and the third direction L3 are perpendicular to each other.

Since the flat membrane unit 13 is formed by folding one flat membrane 1, which allows the first ends of the wastewater and raw water flow path 15 in the third direction L3 to be defined by the desalination layer 12 and the second ends of the pure water flow path 14 in the third direction L3 to be defined by the support layer 11, it is unnecessary to bond the flat membrane 1 to close the first ends of the wastewater and raw water flow path 15 in the third direction L3 and the second ends of the pure water flow path 14 in the third direction L3. The mode that the flat membrane module is stuck after being folded forms waste water and raw water runner 15 and pure water runner 14 through with flat membrane 1 can realize waste water and raw water runner 15 and pure water runner 14's external intercommunication, so, need not to set up the center tube in the flat membrane module, promoted the space occupancy of flat membrane 1 in the flat membrane module, and then promoted the filtration capacity of flat membrane module.

In addition, the flat membrane 1 is in a cuboid shape after being folded, the folded state is shown in fig. 3, and the wastewater formed by bonding the flat membrane 1, the raw water runner 15 and the pure water runner 14 can meet the filtering requirement, so that the flat membrane component does not need to be rolled, and the manufacturing difficulty of the flat membrane component is reduced.

The support layer 11 and the desalination layer 12 are bonded to form the flat sheet membrane 1, and the support layer 11 and the desalination layer 12 are two portions of the flat sheet membrane 1, and since the flat sheet membrane 1 is thin, in fig. 1 to 18, the boundary between the support layer 11 and the desalination layer 12 is not shown.

As shown in fig. 18 (in fig. 18, the flow direction of raw water is indicated by a dot-dash line arrow, the flow path of waste water is indicated by a 2 arrow, the flow path of pure water is indicated by a dotted line arrow), raw water enters the flow path of waste water and raw water 15 from the second end of the flow path of waste water and raw water 15 in the third direction L3 during use of the flat membrane module, part of which is filtered by the flat membrane 1 to form pure water, and flows out through the first end of the flow path of pure water 14 in the third direction L3; the portion that does not pass through the flat plate membrane 1 forms wastewater, which flows out through the wastewater and the raw water flow passage 15 at the first end in the second direction L2.

Alternatively, the flat membrane 1 may be an ultrafiltration membrane, a reverse osmosis membrane, or the like.

In the view angles of fig. 1 to 18, the first end of the pure water flow path 14 in the second direction L2 is an upper end, and the second end of the pure water flow path 14 in the second direction L2 is a lower end. The first end of the wastewater and raw water flow passage 15 in the second direction L2 is an upper end, and the second end of the wastewater and raw water flow passage 15 in the second direction L2 is a lower end.

Further, the upper end portion of the support layer 11 is coated with a hot melt adhesive at a position shown in fig. 2, so that an adhesive portion 16 is formed on the upper end portion of the support layer 11, and the corresponding adhesive portions 16 of the adjacent two flat membrane units 13 are adhered to close the upper end of the pure water flow path 14.

The application discloses a dull and stereotyped membrane module that is cube form, the structure is more succinct, and the assembly is simpler, and dull and stereotyped membrane module's space utilization is higher. Meanwhile, the flat membrane component has smaller filtration specific resistance to raw water and more excellent performance and development potential.

Alternatively, the support layer 11 of the two flat membrane units 13 of the end portion of the flat membrane 1 in the first direction L1, which faces the outside of the flat membrane module, is coated with a hot melt adhesive to avoid the pure water from flowing out at the end portion of the flat membrane 1 in the first direction L1.

Further, the flat membrane module includes an adhesive layer (not shown in fig. 1 to 18) disposed at an end of the flat membrane 1 facing away from the adhesive layer, that is, the adhesive layer is disposed at a lower end of the flat membrane 1, and orthographic projections of the plurality of flat membrane units 13 on the adhesive layer are located inside the adhesive layer, that is, the adhesive layer can cover the lower end of the flat membrane units 13, which makes the lower ends of the pure water flow channels 14 and the lower ends of the wastewater and raw water flow channels 15 be closed. In addition, the end parts of the plurality of flat membrane units 13 are provided with the adhesive layers, so that the area of the flat membrane 1 occupied by the adhesive layers is further reduced, the effective filtering area of the flat membrane assembly is further increased, the flux of pure water is increased, and the utilization rate of the flat membrane 1 is further increased.

The flat membrane component effectively increases the contact area between the membrane and raw water, improves the filtering efficiency and saves a large amount of space; meanwhile, the folding process is simple and mature, the cost is low, and the manufacturing cost of the flat membrane component is effectively reduced.

In a first embodiment of the present application, as shown in fig. 4 and 5, the folds are configured to be heat set; the flat membrane module further comprises pure water diversion cloth 2, and pure water diversion cloth 2 is arranged in any pure water flow channel 14.

In a first embodiment, the flat sheet membrane module may be manufactured by:

(1) Using an automatic cutting machine to vertically cut the flat film 1 to a required length, and then transversely cutting to obtain the flat film 1 with a certain length;

(2) The cut flat film 1 is placed in a folding machine, the flat film 1 is folded according to required parameters, and shaping is performed at a certain temperature after folding, so that a plurality of flat film units 13 are formed.

(3) The pure water diversion cloth 2 is placed in a pure water flow channel 14 surrounded by a supporting layer corresponding to the adjacent flat membrane units.

The crease is the junction of two dull and stereotyped membrane units 13 that form after folding, and after the heating of fold mark is finalized the design, the dull and stereotyped membrane unit 13 that is located the crease both sides are supported by the crease, and desalination layer 12 that two dull and stereotyped membrane units 13 correspond can not laminate, and then can not appear raw water unable problem of passing through, so, need not to increase extra dense water and separate net 3 and carry out raw water conservancy diversion, promoted dull and stereotyped membrane module's space utilization, reduced dull and stereotyped membrane module's manufacturing cost simultaneously.

In the second embodiment of the present application, as shown in fig. 6 and 7, the flat membrane module further includes pure water diversion cloth 2 and a concentrated water screen 3, the pure water diversion cloth 2 is disposed in any pure water flow channel 14, the concentrated water screen 3 is disposed in any waste water and raw water flow channel 15, the concentrated water screen 3 can support the adjacent flat membrane units 13, and plays a role in preventing the corresponding desalination layers 12 of the adjacent flat membrane units 13 from adhering, at this time, the flat membrane 1 is not required to be shaped.

In the third embodiment of the present application, as shown in fig. 8 and 9, the flat membrane module further includes a front carbon sheet 4 and a pure water guiding cloth 2, the pure water guiding cloth 2 is disposed in any pure water flow channel 14, and the front carbon sheet 4 is disposed in any waste water and raw water flow channel 15. At this time, the flat sheet film 1 does not need to be subjected to a shaping treatment. The preposed carbon sheet 4 can replace the dense water separation net 3 to play a role in dense water diversion, meanwhile, the preposed carbon sheet 4 can support the adjacent flat membrane units 13 to play a role in preventing the corresponding desalination layers 12 of the adjacent flat membrane units 13 from being attached, and at the moment, the flat membrane 1 is not required to be shaped.

The front carbon sheet 4 can adsorb particulate matters, residual chlorine, organic pollutants and other toxic and harmful substances in raw water, and can purify water quality so as to protect the flat membrane 1; the front carbon sheet 4 can also replace the dense water separation net 3 to play roles of dense water diversion and supporting adjacent folding to prevent the desalting layer 12 from being attached.

The front carbon sheet 4 is a sheet-shaped structure formed by processing a carbon material, and the carbon material can be activated carbon, dry carbon fiber, wet carbon fiber, foam carbon, granular carbon, carbon nano tube, graphene, an organic metal carbon skeleton, and other carbon-containing materials or carbon-containing composite materials.

In the embodiment, the plate membrane component is directly added with the front carbon sheet 4, and a front carbon filter element is not required to be additionally arranged, so that the space of the water purifier is saved, and the structure of the water purifier is optimized.

In the fourth embodiment of the present application, as shown in fig. 10 and 11, the flat membrane module further includes a post-carbon sheet 5 and a dense water screen 3, wherein the post-carbon sheet 5 is disposed in any one of the pure water flow channels 14, and the dense water screen 3 is disposed in any one of the waste water and raw water flow channels 15. The dense water separation net 3 can support the adjacent flat membrane units 13, plays a role in preventing the corresponding desalination layers 12 of the adjacent flat membrane units 13 from being attached, and at this time, the flat membrane 1 does not need to be subjected to shaping treatment.

The rear carbon sheet 5 can play a role in inhibiting bacteria and improving mouthfeel; meanwhile, the pure water diversion cloth 2 can be replaced to conduct diversion to the membrane pure water.

The rear carbon sheet 5 is a sheet-shaped structure formed by processing a carbon material, and the carbon material can be activated carbon, dry carbon fiber, wet carbon fiber, foam carbon, granular carbon, carbon nano tube, graphene, an organic metal carbon skeleton, and other carbon-containing materials or carbon-containing composite materials.

In this embodiment, the plate membrane module is directly added with the rear carbon sheet 5, and there is no need to additionally add a rear carbon filter element, so that the space structure of the water purifier is saved, and the structure is optimized.

In the fifth embodiment of the present application, as shown in fig. 12 and 13, the flat membrane module further includes a front carbon plate 4 and a rear carbon plate 5, the rear carbon plate 5 is disposed in any one of the pure water flow channels 14, and the front carbon plate 4 is disposed in any one of the waste water and raw water flow channels 15. At this time, the front carbon sheet 4 can replace the dense water screen 3 to play the role of dense water diversion, and meanwhile, the front carbon sheet 4 can support the adjacent flat membrane units 13 to play the role of preventing the corresponding desalination layers 12 of the adjacent flat membrane units 13 from being attached, and at this time, the flat membrane 1 is not required to be shaped.

In addition, the rear carbon sheet 5 can play a role in inhibiting bacteria and improving taste, and can also replace the pure water diversion cloth 2 to conduct diversion to membrane pure water; the front carbon sheet 4 can adsorb particulate matters, residual chlorine and toxic and harmful matters of organic pollutants in raw water to play a role in purifying the water quality protection flat membrane 1.

The front carbon sheet 4 and the rear carbon sheet 5 are sheet structures formed by processing carbon materials, and the carbon materials can be activated carbon, dry carbon fiber, wet carbon fiber, foam carbon, granular carbon, carbon nano tube, graphene, organic metal carbon skeleton, other carbon-containing materials or carbon-containing composite materials.

In the sixth embodiment of the present application, as shown in fig. 14 and 15, the flat membrane module further includes a pre-filter mechanism and pure water guide cloth 2, the pre-filter mechanism including PP cotton sheets 6 and pre-carbon sheets 4 bonded to each other; pure water diversion cloth 2 is arranged in any pure water flow passage 14, and a pre-filtering mechanism is arranged in any waste water and raw water flow passage 15.

The PP cotton sheets 6 can adsorb large particles, rust, red worms, sediment and the like in raw water; the front carbon sheet 4 can adsorb particulate matters, residual chlorine and toxic and harmful matters of organic pollutants in raw water, and plays a role in purifying the water quality protection flat membrane 1; meanwhile, the pre-filtering mechanism can replace the dense water separation net 3 to play a role in dense water diversion, and meanwhile, the pre-filtering mechanism can support the adjacent flat membrane units 13 to play a role in preventing the corresponding desalination layers 12 of the adjacent flat membrane units 13 from being attached, and at the moment, the flat membrane 1 is not required to be shaped.

In a seventh embodiment of the present application, as shown in fig. 16 and 17, the flat membrane module further includes a pre-filter mechanism and a post-carbon sheet 5, the pre-filter mechanism including PP cotton sheets 6 and pre-carbon sheets 4 bonded to each other; a pre-filtering mechanism is arranged in any wastewater and raw water flow passage 15, and a pure water diversion cloth 2 is arranged in any pure water flow passage 14. At this time, the flat sheet film 1 does not need to be subjected to a shaping treatment.

The PP cotton sheets 6 can adsorb large particles, rust, red worms, silt and the like in raw water; the front carbon sheet 4 can adsorb toxic and harmful substances such as particulate matters, residual chlorine, organic pollutants and the like in raw water, and plays a role in purifying the water quality protection flat membrane 1; meanwhile, the pre-filtering mechanism can replace the dense water separation net 3 to play a role in dense water diversion, and meanwhile, the pre-filtering mechanism can support the adjacent flat membrane units 13 to play a role in preventing the corresponding desalination layers 12 of the adjacent flat membrane units 13 from being attached, and at the moment, the flat membrane 1 is not required to be shaped.

In this embodiment, the front carbon sheet 4 and the rear carbon sheet 5 are sheet structures formed by processing carbon materials, and the carbon materials may be activated carbon, dry carbon fibers, wet carbon fibers, foam carbon, granular carbon, carbon nanotubes, graphene, an organic metal carbon skeleton, and other carbon-containing materials or carbon-containing composite materials.

In the embodiment, the PP cotton sheet 6 and the preposed carbon sheet 4 are directly added into the flat membrane component, so that a preposed filter element is not required to be additionally arranged, the space of the water purifier is saved, and the structure of the water purifier is optimized.

According to another aspect of the present application, as shown in fig. 19, the filter element includes the flat membrane module described above, which has the same technical effects as the flat membrane module, and will not be described herein.

Further, the filter element further comprises a first end cover 7 and a second end cover 8, the first end cover 7 and the second end cover 8 are respectively arranged at two ends of the flat membrane 1 in the second direction L2, the first end cover 7 is arranged at the upper ends of the plurality of flat membranes 1, and the second end cover 8 is arranged at the lower ends of the plurality of flat membranes 1. The first end cap 7 has a water outlet 71, and the water outlet 71 communicates with an upper end of the wastewater and raw water flow path 15 (a first end of the wastewater and raw water flow path 15 in the second direction L2), which enables the wastewater flowing out in the wastewater and raw water flow path 15 to flow out through the water outlet 71.

Alternatively, during the process of assembling the filter element, one end of the folded flat membrane 1 may be inserted into the first end cover 7, then the end of the supporting layer 11 facing the first end cover 7 is filled with hot melt adhesive, the hot melt adhesive is cooled and shaped to form the bonding portion 16, and the upper end of the pure water flow channel 14 is closed. After the hot melt adhesive is cooled and the flat plate film 1 is shaped, the other end of the flat plate film 1 is inserted into a second end cover 8 filled with the hot melt adhesive, the hot melt adhesive in the second end cover 8 forms an adhesive layer, the upper ends of the wastewater and raw water flow channels 15 and the lower ends of the pure water flow channels 14 are sealed, and after the flat plate film assembly is pressed and shaped and the hot melt adhesive is cooled, the flat plate film assembly can be obtained.

The adhesive portion 16 and the adhesive layer formed in the above manner are located at the end of the flat membrane 1, and occupy a smaller area of the flat membrane 1, thereby further increasing the area of the flat membrane module.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. A flat sheet membrane module, characterized in that the flat sheet membrane module comprises a flat sheet membrane folded so that the flat sheet membrane is divided into a plurality of flat sheet membrane units by folds, the plurality of flat sheet membrane units are stacked in a first direction to form a cuboid, and the plurality of flat sheet membrane units are perpendicular to the first direction;

2. The flat membrane module according to claim 1, wherein the flat membrane module bonding portion and the adhesive layer are provided on an end portion of the support layer near the first end of the pure water flow path in the second direction, and the bonding portions corresponding to the adjacent two flat membrane units are bonded;

3. The flat panel membrane assembly of claim 2, wherein the crease is configured to be heat set;

4. The flat membrane module according to claim 2, further comprising pure water guiding cloth and a dense water separating net, wherein the pure water guiding cloth is arranged in any pure water flow passage, and the dense water separating net is arranged in any waste water and raw water flow passage.

5. The flat membrane module according to claim 2, further comprising a front carbon sheet and pure water guiding cloth, wherein the pure water guiding cloth is arranged in any one of the pure water flow channels, and the front carbon sheet is arranged in any one of the waste water and raw water flow channels.

6. The flat membrane module according to claim 2, further comprising a rear carbon sheet and a dense water screen, wherein the rear carbon sheet is provided in any one of the pure water flow passages, and the dense water screen is provided in any one of the waste water and raw water flow passages.

7. The flat plate membrane module according to claim 2, further comprising a front carbon plate and a rear carbon plate, wherein the rear carbon plate is provided in any one of the pure water flow channels, and the front carbon plate is provided in any one of the waste water and raw water flow channels.

8. The flat panel membrane module according to claim 2, further comprising a pre-filter mechanism and pure water guide cloth, the pre-filter mechanism comprising PP cotton sheets and pre-carbon sheets bonded to each other;

9. The flat panel membrane module of claim 2, further comprising a pre-filter mechanism and a post-carbon sheet, the pre-filter mechanism comprising PP cotton sheets and pre-carbon sheets bonded to each other;

10. A filter cartridge comprising a flat membrane module according to any one of claims 2 to 9, the filter cartridge further comprising a first end cap and a second end cap, the first end cap and the second end cap being disposed at respective ends of the flat membrane in the second direction, the first end cap having a water outlet in communication with the first end of the wastewater and raw water flow path in the second direction, the adhesive layer being disposed between the second end cap and the flat membrane.