CN220788183U - Spliced roll film and filter element - Google Patents
Spliced roll film and filter element Download PDFInfo
- Publication number
- CN220788183U CN220788183U CN202322035624.4U CN202322035624U CN220788183U CN 220788183 U CN220788183 U CN 220788183U CN 202322035624 U CN202322035624 U CN 202322035624U CN 220788183 U CN220788183 U CN 220788183U
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- CN
- China
- Prior art keywords
- film
- unit
- membrane unit
- membrane
- spliced
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000012528 membrane Substances 0.000 claims abstract description 108
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 230000004907 flux Effects 0.000 claims abstract description 22
- 230000035699 permeability Effects 0.000 claims abstract description 20
- 150000003839 salts Chemical class 0.000 claims abstract description 14
- 239000003292 glue Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 9
- 239000004952 Polyamide Substances 0.000 claims description 8
- 229920002678 cellulose Polymers 0.000 claims description 8
- 239000001913 cellulose Substances 0.000 claims description 8
- 229920002647 polyamide Polymers 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 1
- 238000004806 packaging method and process Methods 0.000 claims 1
- 239000002985 plastic film Substances 0.000 claims 1
- 229920006255 plastic film Polymers 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 9
- 238000010612 desalination reaction Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
Classifications
-
- 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 utility model relates to a filter fitting, and discloses a spliced rolled film and a filter element, which comprise a first film unit in a folded mode, wherein a pure water diversion net is arranged on the outer side of the first film unit, and a water inlet diversion net is arranged on the inner side of the first film unit; the device also comprises a second film unit and a third film unit, wherein the second film unit is connected with one folded edge of the first film unit through glue, and the third film unit is connected with the other folded edge of the first film unit through glue; the difference value of the water flux permeability coefficient of the first membrane unit and the water flux permeability coefficient of the second membrane unit or the third membrane unit is a, wherein a is more than 0% and less than or equal to 80%; the difference between the salt permeability coefficient of the first membrane unit and the salt permeability coefficient of the second membrane unit or the third membrane unit is b, and b is more than 0% and less than or equal to 80%. The coiled film is a spliced film, so that the flux at the inner end of the film can be designed to be larger than the flux at the outer end of the film, the integral salt rate and the flux of the coiled film are not obviously lower than the set value after the coiled film is used for a long time, and the service life of the coiled film is prolonged.
Description
Technical Field
The utility model relates to a filter fitting, in particular to a spliced rolled film and a filter element.
Background
The membrane separation technology has been developed rapidly in recent 30 years as a high-efficiency economical separation technology, and has been widely used in various industries. Membrane elements are critical elements in the system, and in the practical application of a domestic membrane water purifier, higher system recovery rate is generally required. However, for higher recovery rates, the following technical problems occur: 1. the desalination rate of produced water is reduced; 2. scaling; 3. the osmotic pressure of the concentrated water side is too high, and the overall water yield of the element is low.
In the existing membrane element, the concentration of wastewater at the rear end of the general membrane element is far greater than that of wastewater at the water inlet end, and when the membranes at the front and rear ends are the same, concentration polarization and pollution are easy to occur at the rear end of the membrane element, so that the integral desalination rate of the membrane element is reduced and the flux is reduced.
The existing membranes are all integrated, for example, the membrane structure of an RO membrane filter element with the application number of 201910059503.9; the rolled membrane structure and the filter element of application number 202211442532.1 have the same flux at the front and rear ends of the membrane and the desalination rate at the beginning, but after a period of time, the flux of the membrane near one end of the collecting pipe gradually decreases and the desalination rate also deteriorates.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides a spliced rolled film and a filter element.
In order to solve the technical problems, the utility model is solved by the following technical scheme:
a spliced rolled film comprises a folded first film unit, wherein a pure water diversion net is arranged on the outer side of the first film unit, and a water inlet diversion net is arranged on the inner side of the first film unit; the device also comprises a second film unit and a third film unit, wherein the second film unit is connected with one folded edge of the first film unit through glue, and the third film unit is connected with the other folded edge of the first film unit through glue.
Preferably, the difference between the water flux permeability coefficient of the first membrane unit and the water flux permeability coefficient of the second membrane unit or the third membrane unit is a, and a is more than 0% and less than or equal to 80%.
Preferably, the difference between the salt permeability coefficient of the first membrane unit and the salt permeability coefficient of the second membrane unit or the third membrane unit is b, and b is more than 0% and less than or equal to 80%.
Preferably, the materials of the first, second and third membrane units are polyamide or cellulose.
The filter element comprises an upper end cover, a lower end cover and a collecting pipe, wherein the collecting pipe is arranged between the upper end cover and the lower end cover, the collecting pipe is coiled with splicing coiled films, the quantity of the splicing coiled films is at least one, the outer peripheral surface of one end of the splicing coiled film is in sealing connection with the upper end cover or the lower end cover, and the end surface formed by the other end of the splicing coiled film is in sealing connection with the corresponding lower end cover or the upper end cover.
The utility model has the remarkable technical effects due to the adoption of the technical scheme:
the coiled film is a spliced film, so that the flux at the inner end of the film can be designed to be larger than the flux at the outer end of the film, the integral salt rate and the flux of the coiled film are not obviously lower than the set value after the coiled film is used for a long time, and the service life of the coiled film is prolonged.
Drawings
Fig. 1 is a schematic view of a structure of a spliced roll film in a first position state.
Fig. 2 is a schematic view of the structure of the spliced rolled film in the second position state.
Fig. 3 is a schematic view of a structure in which a spliced rolled film is rolled on a collecting pipe.
Fig. 4 is a schematic structural view of the cartridge.
The names of the parts indicated by the numerical reference numerals in the above drawings are as follows: wherein, 10-first membrane unit, 11-pure water guide net, 12-water inlet guide net, 13-second membrane unit, 14-third membrane unit, 15-upper end cover, 16-lower end cover, 17-collecting pipe.
Detailed Description
The utility model is described in further detail below with reference to figures 1-4 and examples.
Example 1
The utility model provides a concatenation rolls up membrane, including the first membrane unit 10 of fifty percent discount, first membrane unit 10 includes first upper folding membrane and first lower folding membrane, the length of first upper folding membrane and first lower folding membrane equals, the reverse side of first membrane unit 10 outwards, first membrane unit 10 outside is equipped with pure water guide net 11, pure water guide net 11 is used for forming the water production flow path to introduce the water after filtering into pressure manifold 17, first membrane unit 10 inboard is equipped with water inflow water guide net 12, water inflow water guide net 12 is used for forming the raw water flow path. The spliced rolled film further comprises a second film unit 13 and a third film unit 14, wherein the second film unit 13 is connected with one edge of the first film unit 10 through glue, the third film unit 14 is connected with the other edge of the first film unit 10 through glue, the second film unit 13 is different in side length and upward in the back face of the long page, the third film unit 14 is also different in side length and upward in the front face of the long page, the lower back face of the first film unit 10 is connected with the back face of the short page of the third film unit 14 through glue, and the upper back face of the first film unit 10 is connected with the back face of the short page of the second film unit 13 through glue, see fig. 2. The desalination rate of the first membrane unit 10 is different from those of the second membrane unit 13 and the third membrane unit 14, so that the desalination rate of the first membrane unit 10 can be designed to be larger than that of the second membrane unit 13 or the third membrane unit 14, the desalination rates and flux of the second membrane unit 13 and the third membrane unit 14 are the same, the first membrane unit 10, the second membrane unit 13 and the third membrane unit 14 form a membrane assembly, one end of the membrane assembly is sealed by glue, the other end of the membrane assembly is not sealed to form a water inlet end, the side of the membrane assembly is supplied with concentrated water to flow out, the membrane assembly forms a water inlet channel, the water inlet guide net 12 is arranged in the water inlet channel, part of water in the water inlet channel is filtered by the membrane assembly to form pure water to flow into a water producing channel, and the other part of water in the water inlet channel is not filtered by the membrane assembly to form concentrated water to be discharged along the outer side of the membrane assembly. The three sides of the adjacent membrane modules are sealed by glue to form a water producing flow channel, and the pure water diversion net 11 is arranged in the water producing flow channel.
The difference between the water flux permeability coefficient of the first membrane unit 10 and the water flux permeability coefficient of the second membrane unit 13 or the third membrane unit 14 is a,0% & lt, a & lt, 80%, and the embodiment a is 40%.
The difference between the salt permeability coefficient of the first membrane unit 10 and the salt permeability coefficient of the second membrane unit 13 or the third membrane unit 14 is b, and b is more than 0% and less than or equal to 80%, and in this embodiment b is 40%.
The materials of the first membrane unit 10, the second membrane unit 13 and the third membrane unit 14 are polyamide or cellulose, and the materials of the first membrane unit 10, the second membrane unit 13 and the third membrane unit 14 may be the same or different, and in this embodiment, the materials of the first membrane unit 10, the second membrane unit 13 and the third membrane unit 14 are all polyamide or cellulose.
Example 2
Example 2 has substantially the same characteristics as example 1, except that the difference between the water flux permeation coefficient of the first membrane unit 10 and the water flux permeation coefficient of the second membrane unit 13 or the third membrane unit 14 is a,0% < a.ltoreq.80%, and the present example a is 1%.
The difference between the salt permeability coefficient of the first membrane unit 10 and the salt permeability coefficient of the second membrane unit 13 or the third membrane unit 14 is b, and b is 0% < 80%, and b is 1% in this embodiment.
The materials of the first membrane unit 10, the second membrane unit 13 and the third membrane unit 14 are polyamide or cellulose, and in this embodiment, the first membrane unit 10 is polyamide, and the materials of the second membrane unit 13 and the third membrane unit 14 are cellulose.
Example 3
Example 3 has substantially the same characteristics as example 1, except that the difference between the water flux permeation coefficient of the first membrane unit 10 and the water flux permeation coefficient of the second membrane unit 13 or the third membrane unit 14 is a,0% < a.ltoreq.80%, and the present example a is 80%.
The difference between the salt permeability coefficient of the first membrane unit 10 and the salt permeability coefficient of the second membrane unit 13 or the third membrane unit 14 is b, and b is more than 0% and less than or equal to 80%, and in this embodiment b is 80%.
The materials of the first membrane unit 10, the second membrane unit 13 and the third membrane unit 14 are polyamide or cellulose, and in this embodiment, the first membrane unit 10 is cellulose, and the materials of the second membrane unit 13 and the third membrane unit 14 are polyamide.
Example 4
The filter core comprises an upper end cover 15, a lower end cover 16 and a collecting pipe 17, wherein the collecting pipe 17 is arranged between the upper end cover 15 and the lower end cover 16, the collecting pipe 17 is coiled with the spliced rolling film in the embodiment 1, water filtered by the spliced rolling film flows out through the collecting pipe 17, the quantity of the spliced rolling film is at least one, the outer peripheral surface of one end of the spliced rolling film is in sealing connection with the upper end cover 15, a water inlet is formed between the upper end cover 15 and the collecting pipe 17, raw water flows into a water inlet channel of the spliced rolling film through the water inlet, the end surface formed by the other end of the spliced rolling film is in sealing connection with the corresponding lower end cover 16, water in the water inlet channel cannot flow out from the lower end cover 16, and the raw water inlet end and the pure water outlet end are both on the same side.
Example 5
Embodiment 5 is basically the same as embodiment 4 in characteristics, except that the outer peripheral surface of one end of the spliced rolling film is in sealing connection with the lower end cover 16, a water inlet is formed between the lower end cover 16 and the collecting pipe 17, raw water flows into a water inlet flow channel of the spliced rolling film through the water inlet, the end surface formed by the other end of the spliced rolling film is in sealing connection with the corresponding upper end cover 15, water in the water inlet flow channel cannot flow out from the upper end cover 15, the raw water inlet end and the pure water outlet end are not on the same side, and a corresponding schematic diagram is not drawn in the embodiment.
Claims (5)
1. The spliced rolled film comprises a folded first film unit (10), wherein a pure water guide net (11) is arranged at the outer side of the first film unit (10), and a water inlet guide net (12) is arranged at the inner side of the first film unit (10); the method is characterized in that: the novel plastic film packaging machine also comprises a second film unit (13) and a third film unit (14), wherein the second film unit (13) is connected with one folded edge of the first film unit (10) through glue, and the third film unit (14) is connected with the other folded edge of the first film unit (10) through glue.
2. A spliced roll film according to claim 1, wherein: the difference between the water flux permeability coefficient of the first membrane unit (10) and the water flux permeability coefficient of the second membrane unit (13) or the third membrane unit (14) is a, and a is more than 0% and less than or equal to 80%.
3. A spliced roll film according to claim 1, wherein: the difference between the salt permeability coefficient of the first membrane unit (10) and the salt permeability coefficient of the second membrane unit (13) or the third membrane unit (14) is b, and b is more than 0% and less than or equal to 80%.
4. A spliced roll film according to claim 1, wherein: the materials of the first membrane unit (10), the second membrane unit (13) and the third membrane unit (14) are polyamide or cellulose.
5. The filter element comprises an upper end cover (15), a lower end cover (16) and a collecting pipe (17), wherein the collecting pipe (17) is arranged between the upper end cover (15) and the lower end cover (16), and is characterized in that: the collecting pipe (17) is coiled with the spliced rolled film according to any one of claims 1-4, the number of the spliced rolled films is at least one, the outer peripheral surface of one end of the spliced rolled film is in sealing connection with the upper end cover (15) or the lower end cover (16), and the end surface formed by the other end of the spliced rolled film is in sealing connection with the corresponding lower end cover (16) or the upper end cover (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322035624.4U CN220788183U (en) | 2023-07-31 | 2023-07-31 | Spliced roll film and filter element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322035624.4U CN220788183U (en) | 2023-07-31 | 2023-07-31 | Spliced roll film and filter element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220788183U true CN220788183U (en) | 2024-04-16 |
Family
ID=90633169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322035624.4U Active CN220788183U (en) | 2023-07-31 | 2023-07-31 | Spliced roll film and filter element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220788183U (en) |
-
2023
- 2023-07-31 CN CN202322035624.4U patent/CN220788183U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |