CN112246105A - Filter core and have its purifier - Google Patents
Filter core and have its purifier Download PDFInfo
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- CN112246105A CN112246105A CN202011094213.7A CN202011094213A CN112246105A CN 112246105 A CN112246105 A CN 112246105A CN 202011094213 A CN202011094213 A CN 202011094213A CN 112246105 A CN112246105 A CN 112246105A
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- reverse osmosis
- pure water
- raw water
- osmosis membrane
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 323
- 239000012528 membrane Substances 0.000 claims abstract description 190
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 101
- 238000007789 sealing Methods 0.000 claims description 37
- 238000001914 filtration Methods 0.000 claims description 12
- 239000002346 layers by function Substances 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 11
- 239000012141 concentrate Substances 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims 1
- 238000005406 washing Methods 0.000 abstract description 10
- 230000008676 import Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 11
- 230000010287 polarization Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- -1 salt ions Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/06—Energy recovery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The application discloses filter core and have its purifier, the filter core include the shell and accept in reverse osmosis membrane module in the shell, reverse osmosis membrane module includes: a central tube; and a reverse osmosis membrane bag; the reverse osmosis membrane bag comprises a pure water membrane bag and a raw water membrane bag; the raw water membrane bag is close to the inboard side of center tube forms the raw water import, with two adjacent limit that inboard side is adjacent all partly sealed the setting, forms a dense water outlet on each adjacent limit, and one of them dense water outlet is located adjacent limit and is close to the section scope of 1/3 of center tube, and wherein another is located dense water outlet and is located the section scope of 1/3 that the adjacent limit kept away from the center tube. This application should provide filter core and have its purifier, the roughly diagonal angle setting of dense water export, has reduced the risk that forms when washing and wash the dead angle, has improved the efficiency of washing the filter core.
Description
Technical Field
The application relates to the technical field of water purifiers, and particularly relates to a filter element and a water purifier with the same.
Background
The traditional filter element with a reverse osmosis membrane component has the same composition, and comprises a central tube, a reverse osmosis membrane, a raw water diversion net and a pure water diversion net. The membrane rolling mode is that the reverse osmosis filter membrane is evenly folded along the functional layer (polyamide functional surface), and a raw water guide net is placed on the folded surface to form a raw water channel; folding another same filter membrane, the non-woven fabrics cover of two folding filter membranes passes through the viscose and keeps away from trilateral adhesion of center tube, and has placed the pure water conservancy diversion net and form the pure water course between two membranes of mutual adhesion. And rolling the adhered membrane on a central tube to prepare the filter element. This kind of membrane rolling technology determines the water flow channel of the filter element: raw water enters from one end of the reverse osmosis membrane, is made into pure water through the functional layer and flows out of the central pipe, and residual concentrated wastewater after filtration flows out of the other end of the reverse osmosis membrane.
The water production structure of the reverse osmosis filter element has the advantages that the filter flow channel is short, so that the recovery rate of pure water is low; various heavy metal ions, impurities, harmful substances and the like on the reverse osmosis membrane are prevented from accumulating on the concentrated water side, the surface of the membrane is easy to scale and pollute, the service life of the filter element is shortened, and salt ions permeate into pure water under the concentration polarization effect of the concentrated water side, so that the first cup of water prepared after shutdown is poor in water quality and not beneficial to human health.
Disclosure of Invention
Aiming at the defects in the technology, the application provides a reverse osmosis membrane component for improving a raw water channel and a pure water channel, and a filter element and a water purifier with the reverse osmosis membrane component.
In order to solve the technical problem, the technical scheme adopted by the application is as follows:
a filter element, the filter element includes the shell and accepts in the reverse osmosis membrane module in the shell, the reverse osmosis membrane module includes:
the central tube is used for introducing raw water; and
the reverse osmosis membrane bag is wound on the central pipe and is used for filtering the raw water to obtain pure water and concentrated water; the reverse osmosis membrane bag comprises a pure water membrane bag and a raw water membrane bag;
the pure water film bag is formed by folding a reverse osmosis membrane, and a pure water outlet is formed in the edge of the pure water film bag;
the pure water membrane bags are stacked mutually to form a raw water membrane bag, the raw water membrane bag is provided with a raw water inlet and a concentrated water outlet, and the raw water inlet and the concentrated water outlet are positioned on different sides of the raw water membrane bag;
the raw water flows out of the central pipe from the radial direction of the central pipe and flows into the raw water membrane bag through the raw water inlet, the pure water is discharged from the pure water outlet along the radial direction of the central pipe, and the concentrated water is discharged from the concentrated water outlet along the axial direction of the central pipe;
the raw water membrane bag is close to the inner side edge of the central pipe to form the raw water inlet, the outer side edge opposite to the inner side edge is arranged in a sealing mode, two adjacent edges adjacent to the inner side edge are partially arranged in a sealing mode, and each adjacent edge is provided with one concentrated water outlet; one of the concentrate outlets is located in the section of the adjacent side near 1/3 of the central tube, and the other is located in the section of the adjacent side far from 1/3 of the central tube.
In one embodiment, two sides adjacent to the folded edge of the pure water film bag are sealed, and one side opposite to the folded edge is provided with the pure water outlet.
In one embodiment, the water purifier further comprises a pure water diversion net arranged on the folded inner side of the pure water film bags and a raw water diversion net arranged between the adjacent pure water film bags, wherein the pure water diversion net is used for guiding the pure water to the pure water outlet; the raw water diversion net is used for guiding the concentrated water to the concentrated water outlet.
In one embodiment, the length of the concentrated water outlet accounts for 1/4 to 1/3 of the length of the adjacent side of the concentrated water outlet.
In one embodiment, the reverse osmosis membrane bag further comprises a wrapping belt for wrapping the periphery of the reverse osmosis membrane bag outwards, and the wrapping belt is provided with an opening for pure water to flow out.
In one embodiment, the reverse osmosis membrane comprises a functional layer for contact filtration with the raw water and a pure water side layer positioned on the back of the functional layer; and a glue channel with a preset width for sealing the raw water film bag is reserved in the circumferential direction of the functional layer.
In one embodiment, a gap for storing the pure water is formed between the peripheral side wall of the reverse osmosis membrane module and the shell.
In one embodiment, the water purifier further comprises sealing end covers respectively arranged at two ends of a reverse osmosis membrane assembly, the sealing end covers are wrapped at the outer sides of the tail ends of the reverse osmosis membrane bags wound on the central pipe, convex ribs are arranged on the inner walls of the end faces of the sealing end covers facing the reverse osmosis membrane bags, and the convex ribs are used for separating the inner walls of the sealing end covers from the end faces of the reverse osmosis membrane bags wound on the central pipe to form gaps beneficial to discharge of concentrated water.
In one embodiment, the length of the reverse osmosis membrane bag wrapped on the central pipe by the sealing end cover is not less than 15mm
The application further provides a water purifier, including the filter core that any embodiment provided above provided.
Compared with the prior art, the application has the beneficial effects that:
the application provides a filter core and have its purifier, it is through setting up the different sides of raw water import and dense water export at raw water membrane bag, make raw water circulation path length in the raw water membrane bag, and raw water membrane bag can keep certain pressure, be favorable to improving the pure water rate of recovery, and simultaneously, dense water export roughly diagonal angle sets up at two adjacent sides, when washing the filter core, form two strands of play rivers that the diagonal angle distributes in the raw water membrane bag, make the inside rivers circulation of raw water membrane bag cover whole raw water membrane bag area, the risk that the dead angle was washed in the formation has been reduced, the washing effect of membrane bag is better, the improvement erodees the crystal salt in falling the membrane bag, dirty efficiency, reduce the concentration polarization phenomenon that the membrane pollution leads to, guarantee the filter effect and the life of membrane bag.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
FIG. 1 is a schematic structural view of a reverse osmosis membrane module as proposed herein;
FIG. 2 is a schematic cross-sectional view of the reverse osmosis membrane module of FIG. 1 after deployment of the reverse osmosis membrane bag;
FIG. 3 is a schematic view showing a structure of a reverse osmosis membrane bag shown in FIG. 2 after the pure water membrane bag is unfolded;
FIG. 4 is a schematic structural view of the reverse osmosis membrane bag of FIG. 2 after the raw water membrane bag is unfolded;
FIG. 5 is a schematic diagram of a glue line of the reverse osmosis membrane of FIG. 2;
FIG. 6 is a schematic diagram of a raw water membrane bag according to another embodiment of the present application after being unfolded;
FIG. 7 is a cross-sectional view of a filter cartridge according to another embodiment of the present application;
fig. 8 is a cross-sectional schematic view of the end cap of the cartridge of fig. 7.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. 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 application.
The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Fig. 1 to 5 show a reverse osmosis membrane module provided in a first embodiment of the present application. The reverse osmosis membrane module provided by the embodiment comprises a central pipe 30 and a reverse osmosis membrane bag 10.
Wherein, the reverse osmosis membrane bag 10 is wound on the central tube 30 and used for filtering raw water to obtain pure water and concentrated water. Referring to fig. 1 and 2, specifically, the central tube 30 is formed in a hollow tubular shape, a water outlet is opened on a side wall of the tubular shape, raw water is introduced from an axial direction 5 of the central tube 30, as shown by an arrow 5 in the figure, enters the reverse osmosis membrane bag 10 through the water outlet on the side wall along a radial direction 51, and pure water is obtained through the filtering action of the reverse osmosis membrane bag 10 and is discharged from a radial direction 6 of the central tube 30.
In this embodiment, the reverse osmosis membrane bag 10 is formed by folding and sealing reverse osmosis membrane sheets 123a and 123b, and includes pure water membrane bags 12a and 12b and a raw water membrane bag 13. Wherein, the number of the pure water film bags is 2, and the number of the raw water film bags is 1. Of course, in other embodiments, the number of pure water membrane bags may be greater than 2, and correspondingly, the number of raw water membrane bags may also be multiple.
The structure of the pure water film bag will be described in detail below. Referring to fig. 2 and 3, fig. 2 is a schematic cross-sectional view of a reverse osmosis membrane module after being unfolded, and fig. 3 is a schematic structural view of a pure water membrane bag 12a after being unfolded. Specifically, the pure water membrane bag 12a is formed by symmetrically folding the reverse osmosis membrane 123 a. The reverse osmosis membrane 123a comprises a filtration function layer and a pure water side layer, and is folded inwards along the pure water side layer, namely, the folded surface is the pure water side layer, the function layer is arranged on the outer side, the reverse osmosis membrane 123a on the two sides of the folded edge 121a is approximately symmetrical, after the folding is completed, the two sides 126a adjacent to the folded edge 121a are both sealed, and a pure water outlet 120a is arranged on one side opposite to the 121a, so that a pure water membrane bag 12a with an opening on one side is formed, namely, the pure water outlet 120a is positioned on the edge of the pure water membrane bag 12 a. Similarly, the pure water film bag 12b is formed by symmetrically folding the reverse osmosis membrane 123b, is symmetrical along the folded edge 121b, is sealed with two adjacent sides of the folded edge 121b, and is provided with a pure water outlet 120b on the side opposite to the folded edge, and the pure water film bag 12b is formed by adopting the same structure as the pure water film bag 12a, and will not be described again.
Wherein the raw water membrane bag 13 is formed between the adjacent pure water membrane bags 12a and 12b stacked one on another. With continued reference to fig. 2, the two pure water membrane bags 12a and 12b are stacked on each other and substantially overlapped with each other, the folded edges 121a and 121b of the pure water membrane bags 12a and 12b are disposed adjacent to the central tube 30, and the raw water inlet 130 is formed between the two adjacent folded edges 121a and 121b and sealed with the outer side 133 opposite to the inner side 135 forming the raw water inlet 130. Referring to fig. 4, two adjacent edges 136 adjacent to the inner edge 135 of the raw water film bag 13 are partially sealed, and the unsealed area forms the concentrated water outlet 131. Therefore, the raw water inlet 130 and the concentrated water outlet 131 are located at different sides of the raw water membrane bag 13, wherein the raw water inlet 130 is located at the inner side edge 135, and the concentrated water outlet 131 is located at two adjacent sides 136 adjacent to the inner side edge 135. Raw water flows from the raw water inlet 130 into the raw water membrane bag 13 in the radial direction 51 of the central tube 30 and flows towards the outer side 133 in the inflow direction, and the raw water is finally discharged from the concentrate outlet 131 of the adjacent side 136 under pressure due to the sealing arrangement of the outer side 133. In this embodiment, in the raw water membrane bag 13, since the raw water inlet direction of the raw water inlet 130 and the concentrated water outlet direction of the concentrated water outlet 131 are substantially at right angles, the raw water entering from the raw water inlet 130 flows into the raw water membrane bag 13 along the inlet direction thereof, the entire raw water membrane bag is filled with the circulation path, which is long, and finally discharged through the concentrated water outlet 131 under pressure, so that the circulation path of the raw water is optimized, sufficient filtration is facilitated, and the pure water outlet ratio is increased. On the contrary, if the raw water inlet and the concentrated water outlet are arranged on two opposite sides, the raw water flows through the whole membrane bag and is directly discharged from the concentrated water outlet, the raw water flow path is approximately linear and is short, and the stable pressure in the raw water membrane bag is not facilitated, so that the filtering effect is further influenced.
The pure water membrane bags 12a and 12b and the raw water membrane bag 13 formed in this way are wound on the central tube 30 starting from the folded edges 121a and 121b, and after the final rolling is completed, the pure water outlets 120a and 120b are located in the radial direction of the central tube 30, that is, pure water is discharged from the radial direction 6 of the central tube 30, and the circumferential direction of the reverse osmosis membrane bag 10 is a pure water environment. Specifically, the pure water side layer is a non-woven fabric layer, and the functional layer is a polyamide layer. The reverse osmosis membrane bag 10 may be wound on the central tube 30 in a concentric manner or in a staggered manner, which is not limited herein.
In the raw water membrane bag 13, pure water permeates into the pure water membrane bags 12a and 12b by the filtration action of the reverse osmosis membranes 123a and 123b and is discharged from the pure water outlets 120a and 120b in the radial direction 6 of the central tube 30, and concentrated water is discharged from the concentrated water outlet 131 in the axial direction 7 of the central tube 30.
The reverse osmosis membrane module that this embodiment provided, raw water circulation path is long in the raw water membrane bag, and raw water membrane bag can keep certain pressure, is favorable to improving the pure water rate of recovery, simultaneously, because pure water membrane bag invades the bubble in the pure water, has guaranteed the quality of the first cup of water of preparation after shutting down for a long time, has reduced the pollution risk of reverse osmosis membrane piece, improves reverse osmosis membrane bag's life.
Referring to fig. 2, in order to facilitate the flow of the water in the raw water film bag 13 and the pure water film bags 12a and 12b, pure water diversion nets 125a and 125b are respectively disposed in the pure water film bags 12a and 12 b. The pure water guide net is used for supporting the flowing space of the water flow and is beneficial to the pure water to flow to the pure water outlets 120a and 120 b. Similarly, in order to facilitate the flow of raw water, a raw water diversion net 124 is provided in the raw water membrane bag 13.
Since the raw water inlet 130 is located close to the inner side 135 of the central tube 30, the open position of the concentrated water outlet 131 determines the raw water flow in the raw water membrane bag 13. Through the research of the inventor of the application, the concentrated water outlet 131 is opened in the range of 1/3-2/3 of the adjacent side 136 far away from the central pipe, but not in the range of 1/3 close to the central pipe 30, the circulation path of raw water in the raw water membrane bag is longer, so that the raw water membrane bag can be filtered more effectively, and the proportion of waste water is reduced. That is, the concentrated water outlet 131 is formed apart from the concentrated water inlet 130, so that the concentrated water is prevented from being directly discharged from the concentrated water outlet 131 after flowing in from the concentrated water inlet 130, the flow path in the raw water membrane bag 13 is shortened, and the waste water ratio is high due to no effective filtration. The open position of the concentrated water outlet 131 is explained in the state that the reverse osmosis membrane bag is unfolded.
The opening size of the concentrated water outlet 131 determines the pressure in the raw water membrane bag 13, and it can be understood that a certain pressure is favorable for raw water to permeate into the pure water membrane bag, but too large pressure causes unsmooth circulation of raw water, and is also not favorable for improving the water production efficiency. In this embodiment, the length of the concentrated water outlet 131 is 1/4 to 1/3 of the length of the corresponding adjacent side 136. Thus, the raw water membrane bag can maintain ideal pressure and raw water flow efficiency.
In this embodiment, referring to fig. 4, the number of the concentrated water outlets 131 is two, and the two concentrated water outlets are respectively arranged on two adjacent sides 136. In this way, after the reverse osmosis membrane bag 10 is wound, the two concentrated water outlets 131 are respectively located on the two end surfaces of the reverse osmosis membrane module, and the concentrated water flows out from the two ends in the axial direction 7 of the central tube 30. Of course, the concentrate outlet 131 may be provided on only one of the adjacent sides 136, such that the concentrate is discharged outwardly from one end of the reverse osmosis membrane module.
Preferably, the two concentrated water outlets 131 are symmetrically arranged on two adjacent sides 136. The symmetrically arranged concentrated water outlets 131 enable the raw water circulation paths of the raw water in the raw water membrane bag 13 to be approximately symmetrical, so that the raw water membrane bag 13 has stable pressure bearing, the pressure of flushing water flow is conveniently increased, and flushing of a filter element provided with the reverse osmosis membrane assembly is facilitated.
In another embodiment, please refer to fig. 6, the embodiment is different from the above embodiments only in the opening position of the concentrated water outlet, and the same structure is denoted by the same reference numerals and will not be described again. In this embodiment, two concentrate outlets 131' are asymmetrically disposed on two adjacent sides 136. Therefore, when raw water is washed, internal circulation water flow is formed on the inner surface of the raw water membrane bag, so that the washing effect of the reverse osmosis membrane is better, and concentration polarization and crystal deposition on the surface of the membrane are reduced. Describing the reverse osmosis membrane bag in an unfolded state, it is preferable that one of the concentrate outlets 131 'is opened in a section of the adjacent side 136 close to 1/3 of the central tube 30, and the other is positioned in a section of the adjacent side 136 away from 1/3 of the central tube 30 at the concentrate outlet 131'. Thus, the positions of the two concentrated water outlets 131' are far away from each other, which is beneficial to the internal circulation water flow in the original water film bag and improves the washing effect. Particularly, when washing, the interior formation two strands of play rivers of diagonal distribution of raw water membrane bag for the interior rivers circulation of raw water membrane bag covers whole raw water membrane bag area, has reduced the risk that forms and wash the dead angle, and the washing effect of membrane bag is better, improves and erodees crystal salt, the dirty efficiency in falling the membrane bag, reduces the concentration polarization phenomenon that the membrane pollution leads to, guarantees the filter effect and the life of membrane bag. Thereby solved the not good technical problem of current reverse osmosis membrane bag washing effect.
In order to maintain the state in which the reverse osmosis membrane bag 10 is rolled on the central tube 30. In this embodiment, the reverse osmosis membrane bag comprises a wrapping tape 11 for wrapping the reverse osmosis membrane bag 10 at the circumferential outer side, the wrapping tape 11 is used for fixedly winding the rolled approximately cylindrical reverse osmosis membrane bag 10 so as to keep the rolled shape and the position of the pure water outlet, and the wrapping tape 11 is provided with an opening for flowing out the pure water. Preferably, the opening of the wrapping bag 11 is opened along the pure water outlet to facilitate the outflow of the pure water.
Since the raw water film bag 13 is formed by sealing the edge portions of the facing surfaces of the two adjacent pure water film bags 12a, 12b, the functional layer does not facilitate the sealing of the edges since the facing surfaces of the pure water film bags 12a and 12b are functional layers. Preferably, referring to fig. 5, a rubber passage 137 with a predetermined width for sealing the raw water film bag 13 is reserved in the circumferential direction of the functional layer of the reverse osmosis membrane. In order to facilitate dispensing and sufficient adhesion stability, the preset width is not less than 5 mm.
The application also provides a filter element, which comprises a shell and a reverse osmosis membrane assembly accommodated in the shell, wherein the reverse osmosis membrane assembly is the reverse osmosis membrane assembly provided by any embodiment. Referring to fig. 7-8, the same structures in this embodiment as those in the above embodiments are denoted by the same reference numerals and are not repeated, and only the differences will be described. In this embodiment, the rolled reverse osmosis membrane module is accommodated in a casing, and a gap for storing pure water is provided between the outer peripheral side wall of the reverse osmosis membrane module and the casing accommodating the reverse osmosis membrane module. So, under the environment of stewing, the circumference of reverse osmosis membrane bag 10 is the pure water environment, effectively slows down concentration polarization, solves the poor problem of first cup water quality.
The filter core that this embodiment provided through changing raw water influent and pure water play water flow direction, makes the reverse osmosis membrane subassembly soak at the pure water always, improves the environment of stewing of purifier shut down reverse osmosis membrane subassembly for solve the too high problem of first cup of total solubility solid matter, reduce the risk of the reverse osmosis membrane surface scale deposit that concentration polarization leads to simultaneously, further guarantee filter core life.
Because the concentrated water is discharged from the two ends of the reverse osmosis membrane component along the axial direction, the concentrated water and the pure water are prevented from mixing. In one embodiment, referring to fig. 7 and 8, the two ends of the reverse osmosis membrane module are respectively provided with a sealing end cap, the sealing end cap 20 is wrapped outside the end of the reverse osmosis membrane bag 10 wound on the central tube 30, the sealing end cap 20 is hermetically connected with the housing accommodating the reverse osmosis membrane module, and the inner side of the sealing end cap 20 is hermetically connected with the reverse osmosis membrane bag 10. Thus, a gap for storing pure water with two sealed ends is formed between the sealing end cover 20 and the shell, and the risk of the pure water being polluted by the permeation of concentrated water into the gap is reduced. Referring to fig. 1, in order to ensure the sealing effect, a central pipe sealing ring 31 is sleeved outside the central pipe 30, and an outer edge of the central pipe sealing ring 31 is in pressing contact with an inner wall of the sealing end cap 20, so as to form a seal between the sealing end cap 20 and the central pipe 30 and prevent water from leaking.
Wherein, a sealing ring 23 is arranged between the outer wall of the sealing end cover 20 and the inner wall of the shell for accommodating the reverse osmosis membrane module, and the sealing ring 23 is used for forming sealing contact and preventing the mutual water leakage of pure water and concentrated water. Furthermore, in order to ensure the sealing reliability, a plurality of sealing rings 23 are arranged side by side to form a multi-layer sealing contact. In this embodiment, the number of the sealing rings 23 is two, and the two sealing rings are arranged at intervals in the axial direction.
Specifically, the end cap 20 is provided with a concentrated water outlet 25, the concentrated water outlet 25 is communicated with a concentrated water outlet 131 of the raw water membrane bag, and the concentrated water flowing through the raw water membrane bag 13 flows out from the concentrated water outlet 131 from two ends of the reverse osmosis membrane module and is discharged outwards along the axial direction 7 through the concentrated water outlet 25.
In order to ensure the circulation of the concentrated water between the concentrated water outlet 131 and the concentrated water outlet 25, the concentrated water is smoothly discharged. Preferably, the end cap 20 is further provided with a rib 22, and the rib 22 is provided on an inner wall of the end surface facing the reverse osmosis membrane bag 10. When the end caps 20 are fitted to both ends of the reverse osmosis membrane bag 10 wound around the central tube 30, a gap is formed between the end caps 20 and the end surface of the reverse osmosis membrane bag 10 due to the blocking of the ribs 22, and the concentrated water is easily discharged from the concentrated water outlet 131 due to the gap, has a small discharge resistance, and is discharged to the gap and then discharged to the outside through the concentrated water outlet 25 of the end caps 20.
Preferably, in order to ensure the sealing effect, the length of the seal end cap 20 wrapping the reverse osmosis membrane bag 10 wound on the central tube 30 is not less than 15mm, that is, the seal end cap 20 wraps at least the end 15mm of the reverse osmosis membrane bag 10, so that a reliable sealing connection is formed.
The application also provides a water purifier, which comprises the filter element provided by any embodiment.
In summary, according to the filter element and the water purifier with the same, pure water flows out from the side face of the filter element, more filter elements are stored in the pure water, concentration polarization is effectively slowed down, and the problem of poor water quality of the first cup is solved; raw water enters from the central tube of the filter element and flows through the whole raw water membrane bag, so that the utilization rate of the membrane is higher, and the recovery rate of pure water is improved; the concentrated water outlet is diagonally arranged, wastewater can flow out from the upper end and the lower end of the filter element, the surface of the reverse osmosis membrane is washed more quickly in the washing process, membrane pollution is reduced, and the service life of the filter element is prolonged.
The above description is only for the purpose of illustrating embodiments of the present invention and is not intended to limit the scope of the present invention, and all modifications, equivalents, and equivalent structures or equivalent processes that can be used directly or indirectly in other related fields of technology shall be encompassed by the present invention.
Claims (10)
1. A filter element comprises a shell and a reverse osmosis membrane assembly accommodated in the shell, and is characterized in that the reverse osmosis membrane assembly comprises:
the central tube is used for introducing raw water; and
the reverse osmosis membrane bag is wound on the central pipe and is used for filtering the raw water to obtain pure water and concentrated water; the reverse osmosis membrane bag comprises a pure water membrane bag and a raw water membrane bag;
the pure water film bag is formed by folding a reverse osmosis membrane, and a pure water outlet is formed in the edge of the pure water film bag;
the pure water membrane bags are stacked mutually to form a raw water membrane bag, the raw water membrane bag is provided with a raw water inlet and a concentrated water outlet, and the raw water inlet and the concentrated water outlet are positioned on different sides of the raw water membrane bag;
the raw water flows out of the central pipe from the radial direction of the central pipe and flows into the raw water membrane bag through the raw water inlet, the pure water is discharged from the pure water outlet along the radial direction of the central pipe, and the concentrated water is discharged from the concentrated water outlet along the axial direction of the central pipe;
the raw water membrane bag is close to the inner side edge of the central pipe to form the raw water inlet, the outer side edge opposite to the inner side edge is arranged in a sealing mode, two adjacent edges adjacent to the inner side edge are partially arranged in a sealing mode, and each adjacent edge is provided with one concentrated water outlet; one of the concentrate outlets is located in the section of the adjacent side near 1/3 of the central tube, and the other is located in the section of the adjacent side far from 1/3 of the central tube.
2. The filter element according to claim 1, wherein two sides adjacent to the folded edge of the pure water membrane bag are hermetically arranged, and one side opposite to the folded edge is provided with the pure water outlet.
3. The filter element according to claim 2, further comprising a pure water guide net provided inside the pure water film bags in a folded state and a raw water guide net provided between the adjacent pure water film bags, the pure water guide net being used for guiding the pure water to the pure water outlet; the raw water diversion net is used for guiding the concentrated water to the concentrated water outlet.
4. The filter cartridge of claim 1, wherein the concentrate outlet has a length 1/4 to 1/3 of the length of the adjacent side opening the concentrate outlet.
5. The filter element of claim 1, further comprising a wrapping band for wrapping the reverse osmosis membrane bag at the periphery outside, wherein the wrapping band is provided with an opening for pure water to flow out.
6. The filter cartridge of claim 1, wherein the reverse osmosis membrane comprises a functional layer for contact filtration with the raw water and a pure water side layer located on the back of the functional layer; and a glue channel with a preset width for sealing the raw water film bag is reserved in the circumferential direction of the functional layer.
7. The filter cartridge of claim 1, wherein a gap is provided between a peripheral sidewall of the reverse osmosis membrane module and the housing for storing the pure water.
8. The filter element according to claim 7, further comprising end caps respectively disposed at two ends of the reverse osmosis membrane module, wherein the end caps are wrapped outside the ends of the reverse osmosis membrane bags wound on the central tube, and ribs are disposed on the inner wall of the end face of the end cap facing the reverse osmosis membrane bags, and are used for separating the inner wall of the end cap from the end face of the reverse osmosis membrane bags wound on the central tube to form a gap for facilitating discharge of concentrated water.
9. The filter element of claim 8, wherein the end cap wraps the reverse osmosis membrane bag wrapped around the center tube for a length of no less than 15 mm.
10. A water purification machine, characterized in that it comprises a filter cartridge according to any one of claims 1 to 9.
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| CN202011094213.7A CN112246105B (en) | 2020-10-14 | 2020-10-14 | Filter core and have its purifier |
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| CN202011094213.7A CN112246105B (en) | 2020-10-14 | 2020-10-14 | Filter core and have its purifier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113247991A (en) * | 2021-05-25 | 2021-08-13 | 追创科技(苏州)有限公司 | Reverse osmosis filter core and water purifier |
| CN115636483A (en) * | 2022-12-14 | 2023-01-24 | 中国科学院合肥物质科学研究院 | Sewage treatment system based on electro-adsorption and control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10132419A1 (en) * | 2001-07-04 | 2003-01-30 | S Med Medizintechnik Gmbh | Reverse-osmosis assembly has high-pressure pump located in inlet to or within holding tank |
| CN103193332A (en) * | 2012-01-07 | 2013-07-10 | 唐伟钊 | Microfiltration or ultrafiltration or nanofiltration or RO water purifier realizing filter core secondary filtration |
| CN208990579U (en) * | 2018-07-17 | 2019-06-18 | 深圳安吉尔饮水产业集团有限公司 | Reverse-osmosis membrane element and water purification machine |
| CN110467240A (en) * | 2019-09-17 | 2019-11-19 | 浙江朗诗德健康饮水设备股份有限公司 | A kind of reverse osmosis filter core of lateral flow type and water purifier |
-
2020
- 2020-10-14 CN CN202011094213.7A patent/CN112246105B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10132419A1 (en) * | 2001-07-04 | 2003-01-30 | S Med Medizintechnik Gmbh | Reverse-osmosis assembly has high-pressure pump located in inlet to or within holding tank |
| CN103193332A (en) * | 2012-01-07 | 2013-07-10 | 唐伟钊 | Microfiltration or ultrafiltration or nanofiltration or RO water purifier realizing filter core secondary filtration |
| CN208990579U (en) * | 2018-07-17 | 2019-06-18 | 深圳安吉尔饮水产业集团有限公司 | Reverse-osmosis membrane element and water purification machine |
| CN110467240A (en) * | 2019-09-17 | 2019-11-19 | 浙江朗诗德健康饮水设备股份有限公司 | A kind of reverse osmosis filter core of lateral flow type and water purifier |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113247991A (en) * | 2021-05-25 | 2021-08-13 | 追创科技(苏州)有限公司 | Reverse osmosis filter core and water purifier |
| CN115636483A (en) * | 2022-12-14 | 2023-01-24 | 中国科学院合肥物质科学研究院 | Sewage treatment system based on electro-adsorption and control method |
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| CN112246105B (en) | 2022-04-29 |
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