CN114307657A - Roll up membrane structure and filter element subassembly with antipollution ability - Google Patents
Roll up membrane structure and filter element subassembly with antipollution ability Download PDFInfo
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- CN114307657A CN114307657A CN202111276813.XA CN202111276813A CN114307657A CN 114307657 A CN114307657 A CN 114307657A CN 202111276813 A CN202111276813 A CN 202111276813A CN 114307657 A CN114307657 A CN 114307657A
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- reverse osmosis
- osmosis membrane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
The invention relates to the field of filter elements, and discloses a rolling membrane structure with anti-pollution capacity and a filter element assembly, wherein the rolling membrane structure comprises a water production layer and a purified water inlet which are communicated, a membrane body is connected with one end of a water inlet and is an inner end, the inner end of a first reverse osmosis membrane is hermetically connected with a third reverse osmosis membrane, the inner end of a second reverse osmosis membrane is hermetically connected with a fourth reverse osmosis membrane, the third reverse osmosis membrane and the fourth reverse osmosis membrane extend to the middle area of the water production layer, the end parts of the third reverse osmosis membrane and the fourth reverse osmosis membrane are hermetically connected, the edge part of the third reverse osmosis membrane is hermetically sealed with the edge part of the first reverse osmosis membrane, and the edge parts of the fourth reverse osmosis membrane and the second reverse osmosis membrane are hermetically sealed; the first reverse osmosis membrane, the third reverse osmosis membrane, the second reverse osmosis membrane and the fourth reverse osmosis membrane form an M-type structure, the membrane body forms a first raw water layer with a longer flow channel on the outer side and a second raw water layer formed by the third reverse osmosis membrane and the fourth reverse osmosis membrane, and raw water flows out of the central pipe and then enters the first raw water layer and the second raw water layer. The filter membrane of this scheme has energy loss little, and filtration efficiency is high, can advantages such as antipollution antifouling hinder.
Description
Technical Field
The utility model relates to a filter core field especially relates to a roll up membrane structure and filter element group spare with antipollution ability.
Background
In most current products, all only adopt a center tube, the membrane element winding forms membrane filter core subassembly on the center tube, and during the filtration, the raw water is intake from filter core tip to along the axial displacement of membrane filter core, collect the center tube with the pure water after filtering in, dense water then flows from the other end of membrane filter core. The disadvantages of such membrane cartridges are: the method has the advantages of low inflow, short water making flow channel, short detention time of raw water in contact with the surface of the membrane element, unstable internal pressure, low desalination rate, incomplete utilization of the membrane element, unbalanced utilization area of the membrane element and the like.
For example, chinese patent CN201611242200.3 discloses a lateral flow type reverse osmosis filter, and its technical scheme is mainly equipped with raw water inlet, pure water delivery port and dense water delivery port on the shell, the center of filter is equipped with pure water passageway and dense water passageway, pure water passageway and dense water passageway communicate with pure water delivery port and dense water delivery port respectively, the membrane element twines and forms the reverse osmosis filter core in pure water passageway and dense water passageway appearance, forms the system water runner that the heliciform extends to the center between the adjacent two-layer membrane element, the end that the membrane element is located on the lateral wall of reverse osmosis filter core has formed the raw water import with system water runner intercommunication, form the raw water between the outside of reverse osmosis filter core and the inboard of shell and hold the chamber, the raw water import holds the chamber through the raw water and communicates with raw water inlet. Compared with the scheme that the raw water inlet is positioned in the center of the reverse osmosis filter element in the prior art, the scheme provided by the invention can enable the membrane element with a larger area to be efficiently utilized under the condition of the same original water pressure. And because the water production efficiency is high, the section flow velocity of the raw water on the surface of the membrane element is obviously improved, and the risk of surface fouling is reduced.
However, the side-flow reverse osmosis filter is still the same as the existing side-flow reverse osmosis membrane, and because the front end and the rear end of the filter have the same filtering section, the pressure loss of the inner end (front end) is still large, and the filter is easy to pollute due to insufficient flow velocity when entering the rear end. And the lateral flow reverse osmosis membrane body with the structure has the technical problems of short water making flow channel and the like.
Disclosure of Invention
Aiming at the defects that the pressure loss is large and the rear end flow speed is low in the prior art, so that the accumulated pollution is easily caused, the invention provides a rolling membrane structure with the pollution resistance and a filter element assembly.
In order to solve the technical problem, the invention is solved by the following technical scheme:
a rolling membrane structure with anti-pollution capacity comprises a membrane body, wherein the membrane body is flattened and at least comprises a first reverse osmosis membrane layer and a second reverse osmosis membrane on the outer sides, the edges of the first reverse osmosis membrane layer and the second reverse osmosis membrane are connected in a sealing mode, a bag-shaped space is formed inside the first reverse osmosis membrane layer and the second reverse osmosis membrane layer, the bag-shaped space is a water production layer, a raw water layer is arranged on the outer side of the membrane body, and raw water enters the water production layer after being filtered by the first reverse osmosis membrane layer or/and the second reverse osmosis membrane from the outer sides of the first reverse osmosis membrane layer or/and the second reverse osmosis membrane;
the membrane body is connected with one end of the purified water inlet as an inner end, the inner end of the first reverse osmosis membrane is connected with a third reverse osmosis membrane in a sealing way, the inner end of the second reverse osmosis membrane is connected with a fourth reverse osmosis membrane in a sealing way, the third reverse osmosis membrane and the fourth reverse osmosis membrane extend to the middle area of the water production layer, the end parts of the third reverse osmosis membrane and the fourth reverse osmosis membrane are connected in a sealing way, the edge part of the third reverse osmosis membrane is sealed with the edge part of the first reverse osmosis membrane, and the edge part of the fourth reverse osmosis membrane is sealed with the edge part of the second reverse osmosis membrane;
the first reverse osmosis membrane, the third reverse osmosis membrane, the second reverse osmosis membrane and the fourth reverse osmosis membrane form an M-shaped structure, a first raw water layer with a longer flow channel at the outer side and a second raw water layer formed by the third reverse osmosis membrane and the fourth reverse osmosis membrane are formed on the membrane body, and raw water flows out of the central pipe and then enters the first raw water layer and the second raw water layer.
Preferably, the axial dimensions of the first reverse osmosis membrane, the second reverse osmosis membrane, the third reverse osmosis membrane and the fourth reverse osmosis membrane are the same, the radial dimensions of the first reverse osmosis membrane and the second reverse osmosis membrane are the same, the radial lengths of the third reverse osmosis membrane and the fourth reverse osmosis membrane are the same and are 1/4-1/2 of the first reverse osmosis membrane, and the ratio is related to the characteristics of the membranes.
Preferably, the third reverse osmosis membrane is formed by bending the first reverse osmosis membrane, and the second reverse osmosis membrane is formed by bending the second reverse osmosis membrane.
Preferably, the membrane body is wound around the central tube to form a spiral water-producing layer, and the outer surface of the membrane body is wound to form a spiral gap, which is a raw water layer.
Preferably, the raw water layer and the water producing layer are internally provided with flow guide nets.
The filter element assembly comprises a central tube, a first cavity and a second cavity which are mutually independent and extend along the axial direction of the central tube are arranged in the central tube, a raw water inlet and a raw water outlet are arranged on the first cavity, and a purified water inlet and a purified water outlet are arranged on the second cavity; the central tube is coated with the rolling membrane structure with the anti-pollution capacity; the raw water outlet is communicated with the raw water layer, and the purified water inlet is communicated with the water producing layer.
Preferably, the raw water outlet is arranged at the end of the second cavity, the raw water outlet and the central pipe are arranged coaxially, the purified water inlet is arranged on the side surface of the second cavity, and the central line of the purified water inlet is perpendicular to the axis of the central pipe.
Preferably, the purified water inlet is disposed at one end of the second chamber, and the raw water inlet is disposed on a side surface of the first chamber.
Through the technical scheme, the invention has the following technical effects:
this scheme has designed a roll membrane structure with antipollution ability, and it is through designing roll membrane structure, makes the raw water have great area of contact when getting into the raw water layer to can reduce and lead to raw water and membrane body and center tube lateral wall equipotential to cause loss of pressure because of the contact surface undersize, thereby improve the velocity of flow through reducing the membrane area with the raw water contact when reacing the rear end, guarantee to erode the effect, solved and rolled up the easy shortcoming that pollutes the scale deposit of membrane.
Drawings
Fig. 1 is a schematic view of the overall structure of a center pipe.
Fig. 2 is a schematic view of the internal structure of the center tube.
Fig. 3 is a schematic structural diagram of the membrane body.
FIG. 4 is a flow attenuation diagram of the same material and area of the membrane of the present embodiment and the conventional membrane under the operation condition of the whole laboratory machine.
The names of the parts indicated by the numerical references in the drawings are as follows: 1-membrane body, 2-first reverse osmosis membrane, 3-second reverse osmosis membrane, 4-third reverse osmosis membrane, 5-fourth reverse osmosis membrane, 6-raw water layer, 7-water production layer, 61-first raw water layer, 62-second raw water layer, 10-first cavity, 11-second cavity, 12-raw water inlet, 13-raw water outlet, 14-purified water inlet, 15-purified water outlet and 16-central tube.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
A rolling membrane structure with anti-scaling capability comprises a membrane body 1, wherein the membrane body 1 is flattened and at least comprises a first reverse osmosis membrane 2 layer and a second reverse osmosis membrane 3 on the outer sides, the first reverse osmosis membrane 2 layer and the second reverse osmosis membrane 3 are sealed through edges to form a water production layer 7 in the membrane body, a raw water layer 6 is arranged on the outer side of the membrane body 1, and raw water enters the water production layer 7 after being filtered by the first reverse osmosis membrane 2 layer or/and the second reverse osmosis membrane 3 from the outer sides of the first reverse osmosis membrane 2 layer or/and the second reverse osmosis membrane 3;
the water producing layer 7 is communicated with the purified water inlet 14, one end of the membrane body 1 connected with the water inlet is the inner end, the inner end of the first reverse osmosis membrane 2 is connected with a third reverse osmosis membrane 4 in a sealing mode, the inner end of the second reverse osmosis membrane 3 is connected with a fourth reverse osmosis membrane 5 in a sealing mode, the third reverse osmosis membrane 4 and the fourth reverse osmosis membrane 5 extend to the middle area of the water producing layer 7, the first reverse osmosis membrane 2, the third reverse osmosis membrane 4, the second reverse osmosis membrane 3 and the fourth reverse osmosis membrane 5 form an M-shaped structure, the membrane body 1 forms a first original water layer 61 with a longer flow channel on the outer side and a second original water layer 62 formed by the third reverse osmosis membrane and the fourth reverse osmosis membrane, and the original water flows out of a central pipe and then enters the first original water layer 61 and the second original water layer 62.
The first reverse osmosis membrane 2, the third reverse osmosis membrane 4, the second reverse osmosis membrane 3 and the fourth reverse osmosis membrane 5 form an M-shaped structure, a first turbulent flow zone 8 is formed between the third reverse osmosis membrane 4 and the first reverse osmosis membrane 2, a second turbulent flow zone 9 is formed between the second reverse osmosis membrane 3 and the fourth reverse osmosis membrane 5, and the first turbulent flow zone 8 and the second turbulent flow zone 9 are formed in the water production layer 7 and are communicated with the water production layer 7. .
When raw water flows out from the raw water outlet and enters the raw water layer in the scheme, the front end is provided with the first raw water layer 61 and the second raw water layer 62, so that a larger membrane area can be obtained in the initial state of raw water, and the utilization rate of the front end membrane is higher. Meanwhile, most of the pressure of the raw water with the structure acts on the membrane, so that the pressure loss irrelevant to other factors is relatively reduced, the energy loss is low, and more energy is saved.
In this embodiment, the axial dimensions of the first reverse osmosis membrane 2, the second reverse osmosis membrane 3, the third reverse osmosis membrane 4 and the fourth reverse osmosis membrane 5 are the same, the radial dimensions of the first reverse osmosis membrane 2 and the second reverse osmosis membrane 3 are the same, the radial lengths of the third reverse osmosis membrane 4 and the fourth reverse osmosis membrane 5 are the same and are 1/4-1/2 of the first reverse osmosis membrane 2, wherein the specific proportional relationship is related to the adopted membrane material and the actual requirement, and the proportion designed in this embodiment is 1/2. That is, the raw water is "run off" the second raw water layer 62, and then only the first raw water layer 61 is used to produce water, and the membrane area is reduced 1/2, so that the flow rate at the rear end is increased compared to that at the front end. The water flow area that the front end of this kind of structure distributes promptly is 2 times of rear end, so this kind of structure has improved the velocity of flow of rear end, and the velocity of flow roughly improves 2 times, has improved the anti dirt capacity of diaphragm by a wide margin, has reduced the diaphragm pollution, has improved the life of diaphragm.
In this embodiment, in order to facilitate the formation of the third reverse osmosis membrane 4 and the fourth reverse osmosis membrane 5, the third reverse osmosis membrane 4 is formed by bending the first reverse osmosis membrane 2, and the second reverse osmosis membrane is formed by bending the second reverse osmosis membrane 3.
In this embodiment, the membrane body 1 is wound around the central tube 16 to form the spiral water producing layer 7, and the outer surface of the membrane body 1 is wound to form a spiral gap, which is the raw water layer 6. And flow guide nets are arranged in the raw water layer 6 and the water producing layer 7.
Example 2
The embodiment provides a filter element assembly, which comprises a central tube 16, wherein a first cavity 10 and a second cavity 11 which are mutually independent and axially extend along the central tube 16 are arranged in the central tube 16, a raw water inlet 12 and a raw water outlet 13 are arranged on the first cavity 10, and a purified water inlet 14 and a purified water outlet 15 are arranged on the second cavity 11; the central tube 16 was assembled with the rolled membrane structure of example 1; the raw water outlet 13 is communicated with the raw water layer 6, and the purified water inlet 14 is communicated with the water producing layer 7. In this embodiment, the raw water outlet 13 is disposed at an end of the second chamber 11, the raw water outlet 13 is disposed coaxially with the central tube 16, the water inlet is disposed at a side of the second chamber 11, and a central line of the water inlet is perpendicular to an axis of the central tube 16, the purified water inlet 14 is disposed at one end of the second chamber 11, and the raw water inlet 12 is disposed at a side of the first chamber 10.
Example 3
This embodiment is different from embodiment 1 in that: the raw water inlet 12 is spline-groove-shaped.
Claims (8)
1. A roll film structure with anti-pollution capability is characterized in that: the membrane comprises a membrane body (1), the membrane body (1) is flattened and at least comprises a first reverse osmosis membrane (2) layer and a second reverse osmosis membrane (3) on the outer side, the edges of the first reverse osmosis membrane (2) layer and the second reverse osmosis membrane (3) are hermetically connected, a bag-shaped space is formed on the inner side of the first reverse osmosis membrane (2) layer and the second reverse osmosis membrane (3), the bag-shaped space is a water production layer (7), a raw water layer (6) is arranged on the outer side of the membrane body (1), and raw water enters the water production layer (7) after being filtered by the first reverse osmosis membrane (2) layer or/and the second reverse osmosis membrane (3) from the outer side of the first reverse osmosis membrane (2) layer or/and the second reverse osmosis membrane (3);
the membrane body (1) is connected with one end of the purified water inlet (14) and is the inner end, the inner end of the first reverse osmosis membrane (2) is connected with a third reverse osmosis membrane (4) in a sealing mode, the inner end of the second reverse osmosis membrane (3) is connected with a fourth reverse osmosis membrane (5) in a sealing mode, the third reverse osmosis membrane (4) and the fourth reverse osmosis membrane (5) extend to the middle area of the water production layer (7), the end portions of the third reverse osmosis membrane (4) and the fourth reverse osmosis membrane (5) are connected in a sealing mode, the edge portion of the third reverse osmosis membrane (4) is sealed with the edge portion of the first reverse osmosis membrane (2), and the edge portions of the fourth reverse osmosis membrane (5) and the second reverse osmosis membrane (3) are sealed;
the first reverse osmosis membrane (2), the third reverse osmosis membrane (4), the second reverse osmosis membrane (3) and the fourth reverse osmosis membrane (5) form an M-shaped structure, the membrane body (1) forms a first raw water layer (61) with a longer flow channel on the outer side, and a second raw water layer (62) formed by the third reverse osmosis membrane and the fourth reverse osmosis membrane, and raw water enters the first raw water layer (61) and the second raw water layer (62) after flowing out from the central pipe.
2. The anti-contamination wrap film structure of claim 1, wherein: the axial dimensions of the first reverse osmosis membrane (2), the second reverse osmosis membrane (3), the third reverse osmosis membrane (4) and the fourth reverse osmosis membrane (5) are the same, the radial dimensions of the first reverse osmosis membrane (2) and the second reverse osmosis membrane (3) are the same, and the radial lengths of the third reverse osmosis membrane (4) and the fourth reverse osmosis membrane (5) are the same and are 1/3-1/2 of the first reverse osmosis membrane (2).
3. The anti-contamination wrap film structure of claim 1, wherein: the third reverse osmosis membrane (4) is formed by bending the first reverse osmosis membrane (2), and the second fourth reverse osmosis membrane is formed by bending the second reverse osmosis membrane (3).
4. The anti-pollution roll film structure according to claim 1, wherein: the membrane body (1) is wound on the central tube (16) to form a spiral water producing layer (7), and the outer side surface of the membrane body (1) forms a spiral gap due to winding, and the gap is a raw water layer (6).
5. The anti-contamination wrap film structure of claim 1, wherein: flow guide nets are arranged in the raw water layer (6) and the water production layer (7).
6. Filter element subassembly, its characterized in that: the device comprises a central tube (16), wherein a first cavity (10) and a second cavity (11) which are mutually independent and axially extend along the central tube (16) are arranged in the central tube (16), a raw water inlet (12) and a raw water outlet (13) are arranged on the first cavity (10), and a purified water inlet (14) and a purified water outlet (15) are arranged on the second cavity (11); a central tube (16) coated with a coiled membrane structure having anti-fouling capacity according to any one of claims 1 to 5; the raw water outlet (13) is communicated with the raw water layer (6), and the purified water inlet (14) is communicated with the water producing layer (7).
7. The filter element assembly according to claim 6, wherein: the raw water outlet (13) is arranged at the end part of the second cavity (11), the raw water outlet (13) and the central pipe (16) are coaxially arranged, and the purified water inlet (14) is arranged on the side surface of the second cavity (11) and the central line of the purified water inlet is vertical to the axis of the central pipe (16).
8. The filter element assembly according to claim 7, wherein: the purified water inlet (14) is arranged at one end of the second cavity (11), and the raw water inlet (12) is arranged on the side surface of the first cavity (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111276813.XA CN114307657B (en) | 2021-10-29 | 2021-10-29 | Film rolling structure with anti-pollution capability and filter element assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111276813.XA CN114307657B (en) | 2021-10-29 | 2021-10-29 | Film rolling structure with anti-pollution capability and filter element assembly |
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| CN114307657A true CN114307657A (en) | 2022-04-12 |
| CN114307657B CN114307657B (en) | 2023-06-30 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001321766A (en) * | 2000-05-15 | 2001-11-20 | Toray Ind Inc | Method of manufacturing filtration membrane element and permeate |
| CN102166477A (en) * | 2011-06-03 | 2011-08-31 | 艾欧史密斯（上海）水处理产品有限公司 | Rolled reverse osmosis membrane element with gradually-reduced inlet channel |
| CN103551039A (en) * | 2013-10-31 | 2014-02-05 | 贵阳时代沃顿科技有限公司 | Spiral-wound membrane element winding method |
| WO2018036063A1 (en) * | 2016-08-26 | 2018-03-01 | 佛山市顺德区美的饮水机制造有限公司 | Spiral wound reverse osmosis membrane element, membrane wound method thereof and reverse osmosis water purifier |
| CN108246103A (en) * | 2016-12-29 | 2018-07-06 | 九阳股份有限公司 | A kind of lateral flow type reverse osmosis filter |
| CN108996614A (en) * | 2018-09-13 | 2018-12-14 | 珠海格力电器股份有限公司 | A kind of reverse osmosis membrane filter element and water purifier |
| CN110433659A (en) * | 2019-06-18 | 2019-11-12 | 厦门百霖净水科技有限公司 | A kind of lateral inflow reverse-osmosis membrane element |
-
2021
- 2021-10-29 CN CN202111276813.XA patent/CN114307657B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001321766A (en) * | 2000-05-15 | 2001-11-20 | Toray Ind Inc | Method of manufacturing filtration membrane element and permeate |
| CN102166477A (en) * | 2011-06-03 | 2011-08-31 | 艾欧史密斯（上海）水处理产品有限公司 | Rolled reverse osmosis membrane element with gradually-reduced inlet channel |
| CN103551039A (en) * | 2013-10-31 | 2014-02-05 | 贵阳时代沃顿科技有限公司 | Spiral-wound membrane element winding method |
| WO2018036063A1 (en) * | 2016-08-26 | 2018-03-01 | 佛山市顺德区美的饮水机制造有限公司 | Spiral wound reverse osmosis membrane element, membrane wound method thereof and reverse osmosis water purifier |
| CN108246103A (en) * | 2016-12-29 | 2018-07-06 | 九阳股份有限公司 | A kind of lateral flow type reverse osmosis filter |
| CN108996614A (en) * | 2018-09-13 | 2018-12-14 | 珠海格力电器股份有限公司 | A kind of reverse osmosis membrane filter element and water purifier |
| CN110433659A (en) * | 2019-06-18 | 2019-11-12 | 厦门百霖净水科技有限公司 | A kind of lateral inflow reverse-osmosis membrane element |
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