CN110975643B - Concentrated water separation net of roll type membrane element - Google Patents
Concentrated water separation net of roll type membrane element Download PDFInfo
- Publication number
- CN110975643B CN110975643B CN201911318501.3A CN201911318501A CN110975643B CN 110975643 B CN110975643 B CN 110975643B CN 201911318501 A CN201911318501 A CN 201911318501A CN 110975643 B CN110975643 B CN 110975643B
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- Prior art keywords
- net
- membrane element
- supporting
- wires
- wound membrane
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- 239000012528 membrane Substances 0.000 title claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 238000000926 separation method Methods 0.000 title claims abstract description 17
- 230000004888 barrier function Effects 0.000 claims description 14
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims 8
- 239000012530 fluid Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000001223 reverse osmosis Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/10—Supported membranes; Membrane supports
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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
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/10—Spiral-wound membrane modules
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/24—Mechanical properties, e.g. strength
Abstract
The invention provides a concentrated water separation net for a roll-type membrane element, which is used for being wound on a central water collecting pipe in the roll-type membrane element, and comprises a plurality of longitudinal net wires and a plurality of transverse net wires which are woven together, wherein the longitudinal net wires and the transverse net wires are respectively arranged along different directions, a supporting column is fixedly connected at the interweaving position of the longitudinal net wires and the transverse net wires, and the upper surface and the lower surface of the supporting column are planes. By adopting the technical scheme of the invention, because the upper surface and the lower surface of the supporting column for supporting the membrane are both planes, and because the supporting column is in surface contact with the membrane, the supporting performance and the pressure resistance of the membrane are effectively improved, so that the concentrated water separation net and the corresponding roll-type membrane element provided by the invention can be suitable for a high-pressure environment with the environmental pressure of 80kg to 120kg, and in addition, the backflow amount of fluid is increased, the backflow dead zone is reduced, and the use performance of the roll-type membrane element is optimized by arranging the backflow hole on the supporting ball.
Description
Technical Field
The invention belongs to the technical field of reverse osmosis membrane elements, and particularly relates to a roll type membrane element concentrated water separation net.
Background
At present, the reverse osmosis membrane element is widely applied to a sewage purification treatment process of water, the reverse osmosis membrane element is generally in a roll shape, namely, a membrane sheet for filtering, a concentrated water separation net and the like are wound on a central water collecting pipe to form a cylindrical long-cylinder roll type membrane element, the existing roll type membrane element is widely applied to various fields, however, the existing roll type membrane element can only be used for a long time under the water with the pressure of less than 60kg, when the roll type membrane element is applied to a high pressure condition, the roll type membrane element can be damaged by excessive pressure to generate shape change, particularly, the middle area of the central water collecting pipe of the roll type membrane element is easy to generate deformation, the existing concentrated water separation net is generally 25mil-40mil in thickness, the existing concentrated water separation net is a rectangular net structure formed by mutually weaving a plurality of longitudinal net wires and a plurality of transverse net wires, and when the middle of the central water collecting pipe of the roll type membrane element is deformed under the high pressure condition, also can make corresponding dense water separate the corresponding region of net and produce deformation, consequently, in order to promote the adaptability of roll formula membrane element, make it can be adapted to and use under the high-pressure environment, the urgent need develops a novel high pressure resistant dense water and separates the net, when reaching high pressure resistance, promotes the whole flux of roll formula membrane element.
Disclosure of Invention
In order to solve the technical problem, the invention provides a roll-type membrane element concentrated water separation net.
The invention is realized by the following technical scheme.
The invention provides a concentrated water separation net for a roll-type membrane element, which is used for being wound on a central water collecting pipe in the roll-type membrane element, and comprises a plurality of longitudinal net wires and a plurality of transverse net wires which are woven together, wherein the longitudinal net wires and the transverse net wires are respectively arranged along different directions, a supporting column is fixedly connected at the interweaving position of the longitudinal net wires and the transverse net wires, and the upper surface and the lower surface of the supporting column are planes.
And the longitudinal net wire or the transverse net wire is also fixedly connected with a spherical supporting ball, and the supporting ball is arranged between any two adjacent supporting columns.
The outer diameter of the supporting ball is 0.7mm-1.2 mm.
And a backflow hole is further formed in the supporting ball, and the central axis of the backflow hole is perpendicular to the central axis of the supporting column.
The distance between the upper surface and the lower surface of the support column is 0.7mm-1.2 mm.
The supporting column is made by cutting out planes which are parallel to each other on the surface of a support body in a spherical shape.
The diameter of the support body is 0.8mm-1.6 mm.
Any two adjacent longitudinal net wires and any two adjacent transverse net wires are interwoven and surrounded to form a diamond shape.
The diameter of the transverse mesh or the longitudinal mesh is 0.3mm-0.6 mm.
The thickness of the concentrated water separation net of the spiral-wound membrane element is 25-40 mil.
The invention has the beneficial effects that: by adopting the technical scheme of the invention, the supporting columns are arranged at the interweaving connection part of the longitudinal net wires and the transverse net wires, the upper and lower surfaces of the supporting columns are both planes and are used for supporting the membrane, and because the supporting columns are in surface contact with the membrane, compared with the prior art, the supporting performance and the pressure resistance of the dense water barrier net structure adopted by the invention are effectively improved, in addition, the supporting balls are arranged between the two adjacent supporting columns, the supporting balls play an auxiliary supporting role in supporting the membrane, the pressure resistance of the dense water barrier net is further improved, according to experimental tests, the dense water barrier net and the corresponding roll-type membrane element provided by the invention can be suitable for a high-pressure environment with the environmental pressure of 80kg to 120kg, the pressure resistance of the membrane element is greatly improved compared with the prior art, in addition, because the thickness of the supporting columns and the outer diameter of the supporting balls are both larger than the wire diameter of the longitudinal net wires and the wire diameter of the transverse net wires, all there is the clearance between vertical net silk, horizontal net silk surface and the diaphragm, can effectively increase the fluid backward flow volume, reduces the backward flow blind spot, owing to be provided with the backward flow hole on the support ball again, can further effectively improve the fluid backward flow volume, reduces the backward flow blind spot, optimizes the performance of roll formula film element.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the present invention taken along the longitudinal mesh axis.
In the figure: 1-longitudinal mesh, 2-transverse mesh, 3-support columns, 4-support balls and 5-backflow holes.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1 and 2, the invention provides a rolled membrane element concentrated water separation net, which is used for being wound on a central water collecting pipe inside the rolled membrane element, the rolled membrane element concentrated water separation net comprises a plurality of longitudinal net wires 1 and a plurality of transverse net wires 2 which are woven together, the longitudinal net wires 1 and the transverse net wires 2 are respectively arranged along different directions, a supporting column 3 is fixedly connected at the interweaving position of the longitudinal net wires 1 and the transverse net wires 2, and the upper surface and the lower surface of the supporting column 3 are both planes.
Further, a support ball 4 in a spherical shape is fixedly connected to the longitudinal net wire 1 or the transverse net wire 2, and the support ball 4 is arranged between any two adjacent support columns 3. The outer diameter of the support ball 4 is preferably 0.7mm to 1.2 mm. In addition, a backflow hole 5 is further formed in the supporting ball 4, and the central axis of the backflow hole 5 is perpendicular to the central axis of the supporting column 3. The diameter of the reflux hole 5 is preferably 0.1mm to 0.3 mm. The distance between the supporting ball 4 and the supporting column 3 is 1.0mm-1.4 mm. The distance between the upper surface and the lower surface of the support column 3 is 0.7mm-1.2 mm.
Further, the support column 3 is formed by cutting out flat surfaces parallel to each other on the surface of a support body having a spherical shape. Preferably, the support has a diameter of 0.8mm to 1.6 mm.
Further, the shape formed by interweaving any two adjacent longitudinal net wires 1 and any two adjacent transverse net wires 2 is a diamond shape. Preferably, the rhombus has at least one pair of internal angles of 30 to 70. By adopting the technical scheme of the invention, any two adjacent longitudinal net wires 1 and any two adjacent transverse net wires 2 are interwoven and surrounded to form a rhombus, and the rhombus shape has better structural stability and better pressure resistance compared with the prior art.
In addition, the diameter of the transverse net wire 2 or the longitudinal net wire 1 is 0.3mm-0.6 mm. The thickness of the concentrated water separation net of the roll-type membrane element is 25-40 mil.
By adopting the technical scheme of the invention, the supporting columns are arranged at the interweaving connection part of the longitudinal net wires and the transverse net wires, the upper and lower surfaces of the supporting columns are both planes and are used for supporting the membrane, and because the supporting columns are in surface contact with the membrane, compared with the prior art, the supporting performance and the pressure resistance of the dense water barrier net structure adopted by the invention are effectively improved, in addition, the supporting balls are arranged between the two adjacent supporting columns, the supporting balls play an auxiliary supporting role in supporting the membrane, the pressure resistance of the dense water barrier net is further improved, according to experimental tests, the dense water barrier net and the corresponding roll-type membrane element provided by the invention can be suitable for a high-pressure environment with the environmental pressure of 80kg to 120kg, the pressure resistance of the membrane element is greatly improved compared with the prior art, in addition, because the thickness of the supporting columns and the outer diameter of the supporting balls are both larger than the wire diameter of the longitudinal net wires and the wire diameter of the transverse net wires, all there is the clearance between vertical net silk, horizontal net silk surface and the diaphragm, can effectively increase the fluid backward flow volume, reduces the backward flow blind spot, owing to be provided with the backward flow hole on the support ball again, can further effectively improve the fluid backward flow volume, reduces the backward flow blind spot, optimizes the performance of roll formula film element.
Claims (9)
1. The utility model provides a thick water of spiral wound membrane element separates net which characterized in that: the spiral-wound membrane element concentrated water separation net is used for being wound on a central water collecting pipe inside the spiral-wound membrane element, the spiral-wound membrane element concentrated water separation net comprises a plurality of longitudinal net wires (1) and a plurality of transverse net wires (2) which are woven together, the longitudinal net wires (1) and the transverse net wires (2) are arranged along different directions respectively, supporting columns (3) are fixedly connected to interweaving positions of the longitudinal net wires (1) and the transverse net wires (2), the upper surfaces and the lower surfaces of the supporting columns (3) are planes, supporting balls (4) which are spherical are fixedly connected to the longitudinal net wires (1) or the transverse net wires (2), and the supporting balls (4) are arranged between any two adjacent supporting columns (3).
2. The spiral wound membrane element concentrate water barrier net of claim 1, wherein: the outer diameter of the supporting ball (4) is 0.7mm-1.2 mm.
3. The spiral wound membrane element concentrate water barrier net of claim 1, wherein: and a backflow hole (5) is further formed in the supporting ball (4), and the central axis of the backflow hole (5) is perpendicular to the central axis of the supporting column (3).
4. The spiral wound membrane element concentrate water barrier net of claim 1, wherein: the distance between the upper surface and the lower surface of the support column (3) is 0.7mm-1.2 mm.
5. The spiral wound membrane element concentrate water barrier net of claim 1, wherein: the supporting column (3) is made by cutting out planes which are parallel to each other on the surface of a support body in a spherical shape.
6. The spiral wound membrane element concentrate water barrier net of claim 5, wherein: the diameter of the support body is 0.8mm-1.6 mm.
7. The spiral wound membrane element concentrate water barrier net of claim 1, wherein: any two adjacent longitudinal net wires (1) and any two adjacent transverse net wires (2) are interwoven and surround to form a diamond shape.
8. The spiral wound membrane element concentrate water barrier net of claim 1, wherein: the diameter of the transverse net wire (2) or the longitudinal net wire (1) is 0.3mm-0.6 mm.
9. The spiral wound membrane element concentrate water barrier net of claim 1, wherein: the thickness of the concentrated water separation net of the spiral-wound membrane element is 25-40 mil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911318501.3A CN110975643B (en) | 2019-12-19 | 2019-12-19 | Concentrated water separation net of roll type membrane element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911318501.3A CN110975643B (en) | 2019-12-19 | 2019-12-19 | Concentrated water separation net of roll type membrane element |
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| Publication Number | Publication Date |
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| CN110975643A CN110975643A (en) | 2020-04-10 |
| CN110975643B true CN110975643B (en) | 2022-01-21 |
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| CN111921379A (en) * | 2020-07-15 | 2020-11-13 | 时代沃顿科技有限公司 | Roll type membrane element pressure-resistant concentrated water separation net |
| CN113694737B (en) * | 2021-08-13 | 2024-05-03 | 万华化学集团股份有限公司 | Self-cleaning water inlet partition net and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120328844A1 (en) * | 2010-03-08 | 2012-12-27 | Mn Beteiligungs Gmbh | Spacer for Filtration Devices |
| CN105381719A (en) * | 2014-09-09 | 2016-03-09 | 贵阳时代沃顿科技有限公司 | Spiral-wound membrane element and rolling method thereof |
| US20190282962A1 (en) * | 2016-09-21 | 2019-09-19 | Toray Industries, Inc. | Separation membrane element and operation method therefor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103041708B (en) * | 2012-12-28 | 2015-01-07 | 成都连接流体分离科技有限公司 | High-pollution-resistance roll type membrane component |
| GR1008635B (en) * | 2014-12-02 | 2015-12-10 | Εθνικο Κεντρο Ερευνας Και Τεχνολογικης Αναπτυξης (Εκετα)/Ινστιτουτο Χημικων Διεργασιων Και Ενεργειακων Πορων (Ιδεπ) | Innovative geometry of net-type feed spacers, for improved performance of membrane modules used in separation, and production methods |
| CN108176235A (en) * | 2018-01-19 | 2018-06-19 | 南京工业大学 | A kind of new configuration filter |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120328844A1 (en) * | 2010-03-08 | 2012-12-27 | Mn Beteiligungs Gmbh | Spacer for Filtration Devices |
| CN105381719A (en) * | 2014-09-09 | 2016-03-09 | 贵阳时代沃顿科技有限公司 | Spiral-wound membrane element and rolling method thereof |
| US20190282962A1 (en) * | 2016-09-21 | 2019-09-19 | Toray Industries, Inc. | Separation membrane element and operation method therefor |
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| CN110975643A (en) | 2020-04-10 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20211126 Address after: 550000 1518 Li Yang Avenue, Guiyang national hi tech Industrial Development Zone, Guiyang, Guizhou Applicant after: Wharton Technology Co.,Ltd. Address before: 550000 1518 Li Yang Avenue, Guiyang national hi tech Industrial Development Zone, Guiyang, Guizhou Applicant before: VONTRON MEMBRANE TECHNOLOGY Co.,Ltd. |
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