CN111921379A - Roll type membrane element pressure-resistant concentrated water separation net - Google Patents
Roll type membrane element pressure-resistant concentrated water separation net Download PDFInfo
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- CN111921379A CN111921379A CN202010680251.4A CN202010680251A CN111921379A CN 111921379 A CN111921379 A CN 111921379A CN 202010680251 A CN202010680251 A CN 202010680251A CN 111921379 A CN111921379 A CN 111921379A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000012528 membrane Substances 0.000 title claims abstract description 67
- 238000000926 separation method Methods 0.000 title claims abstract description 43
- 230000007704 transition Effects 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 6
- 230000008018 melting Effects 0.000 claims abstract description 6
- 230000004888 barrier function Effects 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 2
- 239000012141 concentrate Substances 0.000 claims 9
- 238000001223 reverse osmosis Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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Classifications
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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
- B01D61/08—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
- B01D63/106—Anti-Telescopic-Devices [ATD]
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a pressure-resistant concentrated water separation net of a roll-type membrane element, which is used for being wound on a central water collecting pipe in the roll-type membrane element, the pressure-resistant concentrated water separation net of the roll-type membrane element comprises a plurality of longitudinal net wires and a plurality of transverse net wires which are woven together, the longitudinal net wires and the transverse net wires are respectively arranged along different directions, the interlaced connection part of the longitudinal net wires and the transverse net wires forms a node, and the node forms a node characteristic plane after being processed by a hot melting, extruding or fine grinding process. By adopting the technical scheme of the invention, the node characteristic plane is arranged, so that the damage of the dense water separation net to the adjacent membrane is favorably prevented, the proportion of the central area, the transition area and the node area relative to the side length of the node mesh is strictly controlled, when the thickness of the dense water separation net is increased, the distance between two adjacent transverse net wires or longitudinal net wires is correspondingly increased, the number of nodes in contact with the membrane is reduced, and the risk of the dense water separation net damaging the adjacent membrane is reduced.
Description
Technical Field
The invention belongs to the technical field of reverse osmosis membrane elements, and particularly relates to a pressure-resistant concentrated water separation net of a roll type membrane element.
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 corresponding area of the corresponding dense water separation net can also be deformed, in the existing dense water separation net structure, the interweaving part of the longitudinal net wire and the transverse net wire generally has local bulges, and when the dense water separation net is wound on the central water collecting pipe, indentation pits can be formed at the corresponding position. The phenomenon is particularly obvious along with the increase of the thickness of the thick water separation net, and the adjacent membrane is extruded and damaged, so that in order to reduce the damage risk of the thick net to the membrane, a novel pressure-resistant thick water separation net capable of reducing the damage degree of the membrane is urgently needed to be developed in many occasions with high desalination requirements.
Disclosure of Invention
In order to solve the technical problem, the invention provides a pressure-resistant concentrated water separation net of a roll-type membrane element.
The invention is realized by the following technical scheme.
The invention provides a pressure-resistant concentrated water separation net of a roll-type membrane element, which is used for being wound on a central water collecting pipe in the roll-type membrane element, the pressure-resistant concentrated water separation net of the roll-type membrane element comprises a plurality of longitudinal net wires and a plurality of transverse net wires which are woven together, the longitudinal net wires and the transverse net wires are respectively arranged along different directions, the interlaced connection part of the longitudinal net wires and the transverse net wires forms a node, and the node forms a node characteristic plane after being processed by a hot melting, extruding or fine grinding process.
The angle between the arrangement direction of the longitudinal net wires and the water inlet direction of the pressure-resistant concentrated water separation net of the spiral membrane element is 0-90 degrees.
The angle between the arrangement direction of the transverse mesh wires and the water inlet direction of the pressure-resistant concentrated water separation net of the spiral membrane element is 0-90 degrees.
Any two adjacent transverse net wires and two adjacent longitudinal net wires are intersected and surrounded to form node net holes, the node net holes are quadrangles symmetrically distributed along a diagonal of the node net holes, and the diagonal is parallel to the water inlet direction of the pressure-resistant concentrated water isolation net of the spiral wound membrane element.
Setting the distance between two adjacent longitudinal meshes to be L1The thickness of the pressure-resistant concentrated water separation net of the roll-type membrane element is D, and L is1And D satisfies the following relationship:
setting the distance L between two adjacent transverse net wires2The thickness of the pressure-resistant concentrated water separation net of the roll-type membrane element is D, and L is2And D satisfies the following relationship:
the longitudinal mesh or the transverse mesh between two adjacent nodes can be sequentially divided into a central area, a transition area and a node area from the middle to two ends according to the appearance of the longitudinal mesh or the transverse mesh, wherein the central area is cylindrical, the transition area is conical, the node area is in a polyhedron shape comprising a node characteristic plane, the distance between the two adjacent nodes is A, and the length of the node area is B, so that the A and the B satisfy the following relations:
and if the length of the central area is C, the C and the A satisfy the following relation:
and if the length of the transition region is E, the E and the A satisfy the following relation:
the thickness of the pressure-resistant concentrated water separation net of the spiral-wound membrane element is 10-80 mil.
The invention has the beneficial effects that: by adopting the technical scheme of the invention, the node characteristic plane is formed at the interweaving position of the longitudinal net wires and the transverse net wires after the hot melting, extruding or fine grinding process is adopted, which is favorable for preventing the dense water separation net from damaging the adjacent membranes, and meanwhile, the proportion of the central area, the transition area and the node area relative to the side length of the node net holes is strictly controlled, when the thickness of the dense water separation net is increased, the distance between the two adjacent transverse net wires or the longitudinal net wires is correspondingly increased, the number of nodes contacted with the membranes is reduced, and the risk of the dense water separation net damaging the adjacent membranes is further reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a node mesh partial structure of the present invention.
In the figure: 1-longitudinal mesh, 2-transverse mesh, 3-node characteristic plane, 4-node mesh, 5-central area, 6-transition area and 7-node area.
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 fig. 2, the invention provides a pressure-resistant dense water separation net for a roll-type membrane element, the pressure-resistant dense water separation net for the roll-type membrane element is used for being wound on a central water collecting pipe in the roll-type membrane element, the pressure-resistant dense water separation net for the roll-type membrane element 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, the interlaced connection positions of the longitudinal net wires 1 and the transverse net wires 2 form nodes, and the nodes are processed by a hot melting, extruding or fine grinding process to form a node characteristic plane 3.
Further, it is preferable that the angle between the arrangement direction of the longitudinal net wires 1 and the water inlet direction of the pressure-resistant concentrated water barrier net of the rolled membrane element is 0 ° to 90 °. The angle between the arrangement direction of the transverse mesh 2 and the water inlet direction of the pressure-resistant concentrated water separation net of the spiral membrane element is 0-90 degrees.
In addition, any two adjacent transverse net wires 2 and two adjacent longitudinal net wires 1 are intersected and surrounded to form node net holes 4, the node net holes 4 are quadrangles symmetrically distributed on one diagonal of the node net holes, and the diagonal is parallel to the water inlet direction of the pressure-resistant concentrated water barrier net of the roll-type membrane element.
The distance between two adjacent longitudinal net wires 1 is set to be L1The thickness of the pressure-resistant concentrated water separation net of the roll-type membrane element is D, then L1And D satisfies the following relationship:
2-distance L between two adjacent transverse mesh wires2The thickness of the pressure-resistant concentrated water separation net of the roll-type membrane element is D, then L2And D satisfies the following relationship:
in addition, the longitudinal mesh 1 or the transverse mesh 2 between two adjacent nodes can be sequentially divided into a central area 5, a transition area 6 and a node area 7 from the middle to two ends according to the shape of the mesh, wherein the central area 5 is cylindrical, the transition area 6 is conical, the node area 7 is polyhedral including a node characteristic plane 3, the distance between two adjacent nodes is A, and the length of the node area 7 is B, so that the A and the B satisfy the following relations:
assuming that the length of the central region 5 is C, C and A satisfy the following relationship:
assuming that the length of the transition zone 6 is E, the following relationship is satisfied between E and A:
finally, the thickness of the pressure-resistant concentrated water separation net of the roll-type membrane element is 10-80 mil.
By adopting the technical scheme of the invention, the node characteristic plane is formed at the interweaving position of the longitudinal net wires and the transverse net wires after the hot melting, extruding or fine grinding process is adopted, which is favorable for preventing the dense water separation net from damaging the adjacent membranes, and meanwhile, the proportion of the central area, the transition area and the node area relative to the side length of the node net holes is strictly controlled, when the thickness of the dense water separation net is increased, the distance between the two adjacent transverse net wires or the longitudinal net wires is correspondingly increased, the number of nodes contacted with the membranes is reduced, and the risk of the dense water separation net damaging the adjacent membranes is further reduced.
Claims (10)
1. The utility model provides a withstand voltage dense water of formula of book membrane element separates net which characterized in that: the pressure-resistant concentrated water separation net for the roll type membrane element is used for being wound on a central water collecting pipe in the roll type membrane element, the pressure-resistant concentrated water separation net for the roll type membrane element 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, the interweaved joint of the longitudinal net wires (1) and the transverse net wires (2) forms a node, and the node is processed through a hot melting, extruding or fine grinding process to form a node characteristic plane (3).
2. The spiral wound membrane element pressure resistant concentrate barrier of claim 1, wherein: the angle between the arrangement direction of the longitudinal net wires (1) and the water inlet direction of the pressure-resistant concentrated water separation net of the spiral membrane element is 0-90 degrees.
3. The spiral wound membrane element pressure resistant concentrate barrier of claim 1, wherein: the angle between the arrangement direction of the transverse mesh (2) and the water inlet direction of the pressure-resistant concentrated water barrier net of the spiral membrane element is 0-90 degrees.
4. The spiral wound membrane element pressure resistant concentrate barrier of claim 1, wherein: any two adjacent transverse net wires (2) and two adjacent longitudinal net wires (1) are intersected and surrounded to form node net holes (4), the node net holes (4) are quadrangles symmetrically distributed along a diagonal of the node net holes, and the diagonal is parallel to the water inlet direction of the pressure-resistant concentrated water isolation net of the roll-type membrane element.
5. The spiral wound membrane element pressure resistant concentrate barrier of claim 1, wherein: the distance between two adjacent longitudinal net wires (1) is set to be L1The thickness of the pressure-resistant concentrated water separation net of the roll-type membrane element is D, and L is1And D satisfies the following relationship:
6. the spiral wound membrane element pressure resistant concentrate barrier of claim 1, wherein: the distance L between two adjacent transverse net wires (2) is set2The thickness of the pressure-resistant concentrated water separation net of the roll-type membrane element is D, and L is2And D satisfies the following relationComprises the following steps:
7. the spiral wound membrane element pressure resistant concentrate barrier of claim 1, wherein: the longitudinal net wire (1) or the transverse net wire (2) between two adjacent nodes can be sequentially divided into a central area (5), a transition area (6) and a node area (7) from the middle to two ends according to the appearance of the longitudinal net wire (1) or the transverse net wire (2), wherein the central area (5) is cylindrical, the transition area (6) is conical, the node area (7) is polyhedral and comprises the node characteristic plane (3), the distance between the two adjacent nodes is set to be A, the length of the node area (7) is set to be B, and then the A and the B meet the following relation:
8. the spiral wound membrane element pressure-resistant concentrate barrier of claim 7, wherein: if the length of the central area (5) is C, the following relation is satisfied between C and A:
9. the spiral wound membrane element pressure-resistant concentrate barrier of claim 7, wherein: and if the length of the transition region (6) is E, the E and the A satisfy the following relation:
10. the spiral wound membrane element pressure resistant concentrate barrier of claim 1, wherein: the thickness of the pressure-resistant concentrated water separation net of the spiral-wound membrane element is 10-80 mil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680251.4A CN111921379A (en) | 2020-07-15 | 2020-07-15 | Roll type membrane element pressure-resistant concentrated water separation net |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680251.4A CN111921379A (en) | 2020-07-15 | 2020-07-15 | Roll type membrane element pressure-resistant concentrated water separation net |
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| Publication Number | Publication Date |
|---|---|
| CN111921379A true CN111921379A (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010680251.4A Pending CN111921379A (en) | 2020-07-15 | 2020-07-15 | Roll type membrane element pressure-resistant concentrated water separation net |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113244773A (en) * | 2021-06-17 | 2021-08-13 | 湖南澳维新材料技术有限公司 | Concentrated water separation net for roll type membrane element |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020027111A1 (en) * | 2000-07-18 | 2002-03-07 | Nitto Denko Corporation | Spiral wound membrane element, spiral wound membrane module and treatment system employing the same as well as running method and washing method therefor |
| US20070062857A1 (en) * | 2004-04-05 | 2007-03-22 | Pall Corporation | Spacer for use in filter modules |
| CN202506321U (en) * | 2012-02-02 | 2012-10-31 | 安得膜分离技术工程(北京)有限公司 | Coiling type filtering film element central pipe and coiling type filtering film element |
| CN204193798U (en) * | 2014-11-04 | 2015-03-11 | 珠海格力电器股份有限公司 | Water inlet flow guide net, water purification membrane group, roll type reverse osmosis membrane element and water purification equipment |
| CN205627658U (en) * | 2016-03-24 | 2016-10-12 | 广州泊通过滤膜科技有限公司 | Spiral wound module separates web frame |
| CN108176235A (en) * | 2018-01-19 | 2018-06-19 | 南京工业大学 | Novel structure type separates net |
| CN110975643A (en) * | 2019-12-19 | 2020-04-10 | 时代沃顿科技有限公司 | Concentrated water separation net of roll type membrane element |
-
2020
- 2020-07-15 CN CN202010680251.4A patent/CN111921379A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020027111A1 (en) * | 2000-07-18 | 2002-03-07 | Nitto Denko Corporation | Spiral wound membrane element, spiral wound membrane module and treatment system employing the same as well as running method and washing method therefor |
| US20070062857A1 (en) * | 2004-04-05 | 2007-03-22 | Pall Corporation | Spacer for use in filter modules |
| CN202506321U (en) * | 2012-02-02 | 2012-10-31 | 安得膜分离技术工程(北京)有限公司 | Coiling type filtering film element central pipe and coiling type filtering film element |
| CN204193798U (en) * | 2014-11-04 | 2015-03-11 | 珠海格力电器股份有限公司 | Water inlet flow guide net, water purification membrane group, roll type reverse osmosis membrane element and water purification equipment |
| CN205627658U (en) * | 2016-03-24 | 2016-10-12 | 广州泊通过滤膜科技有限公司 | Spiral wound module separates web frame |
| CN108176235A (en) * | 2018-01-19 | 2018-06-19 | 南京工业大学 | Novel structure type separates net |
| CN110975643A (en) * | 2019-12-19 | 2020-04-10 | 时代沃顿科技有限公司 | Concentrated water separation net of roll type membrane element |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113244773A (en) * | 2021-06-17 | 2021-08-13 | 湖南澳维新材料技术有限公司 | Concentrated water separation net for roll type membrane element |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20211124 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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Application publication date: 20201113 |
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