CN114259873A - Multi-membrane reverse osmosis membrane element rolling method - Google Patents
Multi-membrane reverse osmosis membrane element rolling method Download PDFInfo
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- CN114259873A CN114259873A CN202111624209.1A CN202111624209A CN114259873A CN 114259873 A CN114259873 A CN 114259873A CN 202111624209 A CN202111624209 A CN 202111624209A CN 114259873 A CN114259873 A CN 114259873A
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- membrane
- reverse osmosis
- osmosis membrane
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- pure water
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- 239000012528 membrane Substances 0.000 title claims abstract description 182
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 66
- 238000005096 rolling process Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000004744 fabric Substances 0.000 claims abstract description 40
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010612 desalination reaction Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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Abstract
The invention discloses a method for rolling a multi-membrane reverse osmosis membrane element, which comprises the following steps: manufacturing a first membrane sheet; manufacturing a second film sheet; manufacturing a third film sheet; placing the second membrane page above the first membrane page, and placing the third membrane page above the second membrane page, wherein the first membrane page, the second membrane page and the third membrane page are combined into a pre-assembled membrane group; placing a third pure water guide cloth on the tabletop of the gluing machine, fixing the third pure water guide cloth on a central pipe, stacking a plurality of pre-installed membrane groups above the third pure water guide cloth, and gluing each pre-installed membrane group; the membrane pages are rolled in a mode of grouping and assembling in advance, so that the membrane pages can be uniformly distributed in the rolling process, the sliding of the membrane pages is reduced, and the yield is improved.
Description
Technical Field
The invention relates to the technical field of reverse osmosis membrane production, in particular to a method for rolling a multi-membrane reverse osmosis membrane element.
Background
In the process of rolling the reverse osmosis membrane, the problems of uneven membrane distribution and low yield caused by sliding in the rolling process can occur due to the fact that the number of the membrane pages needing to be rolled is too large.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention provides a method for rolling a multi-membrane reverse osmosis membrane element, which adopts a mode of grouping and assembling membrane pages in advance to roll the membrane pages, can ensure the uniform distribution of the membrane pages in the rolling process, reduce the sliding of the membrane pages and improve the yield.
The embodiment of the invention provides a method for rolling a multi-membrane reverse osmosis membrane element, which comprises the following steps:
s100: folding a first reverse osmosis membrane, placing a first concentrated water grid between the upper layer and the lower layer of the folded first reverse osmosis membrane, placing a first pure water guide cloth above the first reverse osmosis membrane, and combining the first reverse osmosis membrane, the first concentrated water grid and the first pure water guide cloth into a first membrane page;
s200: folding a second reverse osmosis membrane, placing a second concentrated water grid between the upper layer and the lower layer of the folded second reverse osmosis membrane, placing a second pure water guide cloth above the second reverse osmosis membrane, and combining the second reverse osmosis membrane, the second concentrated water grid and the second pure water guide cloth into a second membrane page;
s300: folding a third reverse osmosis membrane, and placing a third concentrated water grid between the upper layer and the lower layer which are folded, wherein the third reverse osmosis membrane and the third concentrated water grid are combined into a third membrane page;
s400: gluing the first membrane page, placing the second membrane page above the first membrane page, gluing the second membrane page, and placing the third membrane page above the second membrane page, wherein the first membrane page, the second membrane page and the third membrane page are combined into a pre-assembled membrane group;
s500: placing a third pure water guide cloth on the table top of the gluing machine, placing the first pre-assembly membrane group above the third pure water guide cloth, fixedly connecting the first pure water guide cloth, the second pure water guide cloth and the third pure water guide cloth of the first pre-assembly membrane group together, fixing the third pure water guide cloth on a central pipe, finally stacking a plurality of the rest pre-assembly membrane groups above the first pre-assembly membrane group, and gluing each pre-assembly membrane group.
The rolling method of the multi-membrane reverse osmosis membrane element provided by the embodiment of the invention at least has the following technical effects: the rolling process steps are added, the first membrane page, the second membrane page and the third membrane page are manufactured firstly, then the first membrane page, the second membrane page and the third membrane page are combined to form a pre-installed membrane group, and a plurality of pre-installed membrane groups are adopted according to requirements to meet the quantity of membrane pages required by manufacturing the reverse osmosis membrane element, so that the problems that the membrane pages are not uniformly distributed, the membrane pages are less or more placed, the membrane pages slide in rolling and the like can be solved, and the yield is improved.
According to some embodiments of the invention, the distance between the first left edge of the first pure water guide and the first pair of folded edges of the first reverse osmosis membrane in the left-right direction is D1, and the distance between the second left edge of the second pure water guide and the second pair of folded edges of the second reverse osmosis membrane in the left-right direction is D2, which satisfies the following conditions: D1-D2-20 mm.
According to some embodiments of the present invention, the first reverse osmosis membrane, the second reverse osmosis membrane and the third reverse osmosis membrane have the same length in the left-right direction after being folded in half, and are all L1.
According to some embodiments of the present invention, the length of the third pure water guide cloth in the left-right direction is L2, and satisfies: L1-L2 is 30 mm.
According to some embodiments of the invention, the third left edge of the third pure water guide is at a distance D3, D3 being 20mm from the first pair of flaps.
According to some embodiments of the invention, the first pair of flaps is located to the left of the second pair of flaps, and the distance between the first pair of flaps and the second pair of flaps is D4, D4 being 5 mm.
According to some embodiments of the invention, the second pair of flaps is located to the left of the third pair of flaps, and the distance between the second pair of flaps and the third pair of flaps is D5, D5 being 5 mm.
According to some embodiments of the invention, the left-right spacing of the first folded edges of two adjacent pre-assembly film groups is D6, which satisfies the following conditions: d6 is not less than 7mm and not more than 8 mm.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of a first membrane sheet of some embodiments of the present invention;
FIG. 2 is a schematic view of a second membrane sheet of some embodiments of the invention;
FIG. 3 is a schematic view of a third membrane sheet of some embodiments of the invention;
FIG. 4 is a schematic illustration of a pre-assembled membrane module according to some embodiments of the present invention;
FIG. 5 is a schematic illustration of a first film sheet being sized according to some embodiments of the present invention;
FIG. 6 is a schematic top view of a pre-assembled membrane module according to some embodiments of the present invention;
FIG. 7 is a schematic illustration of seven pre-assembled membrane modules rolled according to some embodiments of the present invention.
Reference numerals:
a first reverse osmosis membrane 100, a first folded edge 110, a first concentrated water grid 120, a first pure water guide cloth 130, a first left edge 135, and a first membrane sheet 140;
a second reverse osmosis membrane 200, a second pair of folded edges 210, a second concentrated water grid 220, a second pure water guide 230, a second left edge 235, and a second membrane sheet 240;
a third reverse osmosis membrane 300, a third pair of folded edges 310, a third concentrated water grid 320 and a third membrane 330;
third pure water guide cloth 400, third left edge 405, pre-installed membrane group 410, central tube 420, gluing line 430 and spot welding point 440.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
The embodiments of the present invention will be further explained with reference to the drawings.
According to some embodiments of the present invention, a multi-sheet reverse osmosis membrane element rolling method includes step S100, step S200, step S300, step S400, and step S500.
Referring to fig. 1, in step S100: folding the desalination layer of the first reverse osmosis membrane 100 inwards, placing a first concentrated water grid 120 between the folded upper layer and the folded lower layer, placing a first pure water guide cloth 130 above the first reverse osmosis membrane 100, and combining the first reverse osmosis membrane 100, the first concentrated water grid 120 and the first pure water guide cloth 130 into a first membrane sheet 140; it is understood that step S100 needs to be repeated multiple times to prepare multiple first membrane pages 140 to meet the requirements of the subsequent steps.
Referring to fig. 2, in step S200: folding the desalination layer of the second reverse osmosis membrane 200 inwards, placing a second concentrated water grid 220 between the folded upper layer and the folded lower layer, placing a second pure water guide cloth 230 above the second reverse osmosis membrane 200, and combining the second reverse osmosis membrane 200, the second concentrated water grid 220 and the second pure water guide cloth 230 into a second membrane sheet 240; it is understood that step S200 needs to be repeated a plurality of times to prepare a plurality of second film sheets 240 to meet the requirements of the subsequent steps.
Referring to fig. 3, in step S300: folding the desalination layer of the third reverse osmosis membrane 300 inwards, placing a third concentrated water grid 320 between the folded upper layer and the folded lower layer, and combining the third reverse osmosis membrane 300 and the third concentrated water grid 320 into a third membrane page 330; it is understood that the step S300 needs to be repeated a plurality of times to prepare a plurality of third membrane pages 330 to meet the requirements of the subsequent steps.
Referring to fig. 4, in step S400: gluing the first membrane page 140, placing the second membrane page 240 above the first membrane page 140, gluing the second membrane page 240, and placing the third membrane page 330 above the second membrane page 240, wherein the first membrane page 140, the second membrane page 240 and the third membrane page 330 are combined into a pre-assembly membrane group 410; it is understood that step S400 needs to be repeated several times to prepare a plurality of pre-assembled membrane modules 410 to meet the requirements of the subsequent steps.
Referring to fig. 6 and 7, in step S500: placing a third pure water guide cloth 400 on the tabletop of the gluing machine, placing a first pre-assembly membrane group 410 above the third pure water guide cloth 400, fixedly connecting the first pure water guide cloth 130 and the second pure water guide cloth 230 of the first pre-assembly membrane group 410 and the third pure water guide cloth 400 together through spot welding, wherein spot welding positions 440 are located on the front side and the rear side, fixing the third pure water guide cloth 400 on a central pipe 420, and finally stacking a plurality of the rest pre-assembly membrane groups 410 above the first pre-assembly membrane group 410. it should be noted that gluing is performed on the upper side of each pre-assembly membrane group 410 and the gluing line 430 is shown in fig. 7.
It can be understood that, referring to fig. 7, seven pre-installed membrane groups 410 are used because 21 membrane sheets of reverse osmosis membranes need to be rolled, and eight pre-installed membrane groups 410 are used if 24 membranes need to be rolled, and the number of the pre-installed membrane groups 410 is adjusted according to requirements.
According to some embodiments of the present invention, referring to fig. 1 and 2, the distance between the first left edge 135 of the first pure water guide 130 and the first pair of folds 110 of the first reverse osmosis membrane 100 in the left-right direction is D1, and the distance between the second left edge 235 of the second pure water guide 230 and the second pair of folds 210 of the second reverse osmosis membrane 200 in the left-right direction is D2, which satisfies: D1-D2-20 mm.
According to some embodiments of the present invention, referring to fig. 4 and 5, the glue line 430 is composed of three sides, i.e., front, rear, and right, and the size of the glue line 430 may be changed as desired.
According to some embodiments of the present invention, the first reverse osmosis membrane 100, the second reverse osmosis membrane 200 and the third reverse osmosis membrane 300 have the same length in the left-right direction after being folded in half, and are all L1.
According to some embodiments of the present invention, the length of the third pure water guide 400 in the left-right direction is L2, satisfying: L1-L2 is 30 mm.
According to some embodiments of the present invention, referring to fig. 6, the third left edge 405 of the third pure water guide 400 is at a distance D3 from the first pair of flaps 110, D3 being 20 mm.
According to some embodiments of the present invention, referring to fig. 6, the first pair of flaps 110 is positioned to the left of the second pair of flaps 210, and the distance between the first pair of flaps 110 and the second pair of flaps 210 is D4, D4 being 5 mm.
According to some embodiments of the present invention, referring to fig. 6, the second pair of flaps 210 is positioned to the left of the third pair of flaps 310, and the distance between the second pair of flaps 210 and the third pair of flaps 310 is D5, and D5 is 5 mm.
According to some embodiments of the present invention, the left-right spacing of the first folded edges 110 of two pre-assembly film sets 410 adjacent to each other is D6, which satisfies the following conditions: d6 is not less than 7mm and not more than 8 mm.
In the description herein, references to the description of "some embodiments" mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. A rolling method of a multi-membrane reverse osmosis membrane element is characterized by comprising the following steps:
s100: folding a first reverse osmosis membrane (100), placing a first concentrated water grid (120) between an upper layer and a lower layer of the folded first reverse osmosis membrane, placing a first pure water guide cloth (130) above the first reverse osmosis membrane (100), and combining the first reverse osmosis membrane (100), the first concentrated water grid (120) and the first pure water guide cloth (130) into a first membrane page (140);
s200: folding a second reverse osmosis membrane (200), placing a second concentrated water grid (220) between the upper layer and the lower layer of the folded second reverse osmosis membrane, placing a second pure water guide cloth (230) above the second reverse osmosis membrane (200), and combining the second reverse osmosis membrane (200), the second concentrated water grid (220) and the second pure water guide cloth (230) into a second membrane page (240);
s300: folding a third reverse osmosis membrane (300), placing a third concentrated water grid (320) between the upper layer and the lower layer which are folded in half, and combining the third reverse osmosis membrane (300) and the third concentrated water grid (320) into a third membrane page (330);
s400: gluing the first membrane page (140), placing the second membrane page (240) above the first membrane page (140), gluing the second membrane page (240), placing the third membrane page (330) above the second membrane page (240), and combining the first membrane page (140), the second membrane page (240) and the third membrane page (330) into a pre-assembly membrane group (410);
s500: placing a third pure water guide cloth (400) on the tabletop of the gluing machine, placing a first pre-assembly membrane group (410) above the third pure water guide cloth (400), fixedly connecting the first pure water guide cloth (130) and the second pure water guide cloth (230) of the first pre-assembly membrane group (410) with the third pure water guide cloth (400), fixing the third pure water guide cloth (400) on a central pipe (420), and finally stacking a plurality of the rest pre-assembly membrane groups (410) above the first pre-assembly membrane group (410), wherein each pre-assembly membrane group (410) is glued.
2. The rolling method of multi-sheet reverse osmosis membrane element according to claim 1, wherein the distance between the first left edge (135) of the first pure water guide cloth (130) and the first pair of folded edges (110) of the first reverse osmosis membrane (100) in the left-right direction is D1, and the distance between the second left edge (235) of the second pure water guide cloth (230) and the second pair of folded edges (210) of the second reverse osmosis membrane (200) in the left-right direction is D2, so that: D1-D2-20 mm.
3. The rolling method of the multi-sheet reverse osmosis membrane element according to claim 2, wherein the first reverse osmosis membrane (100), the second reverse osmosis membrane (200), and the third reverse osmosis membrane (300) are folded in half and have the same length in the left-right direction, and are all L1.
4. The rolling method of a multi-membrane reverse osmosis membrane element according to claim 3, wherein the length of the third pure water guide cloth (400) in the left-right direction is L2, satisfying: L1-L2 is 30 mm.
5. A rolling method of multi-membrane reverse osmosis membrane element according to claim 4, characterised in that the third left edge (405) of the third pure water guide cloth (400) is at a distance D3 from the first pair of folds (110), D3 being 20 mm.
6. A rolling method of multi-leaf reverse osmosis membrane elements according to claim 5, wherein the first pair of folds (110) is located to the left of the second pair of folds (210), and the distance between the first pair of folds (110) and the second pair of folds (210) is D4 and D4 is 5 mm.
7. The rolling method of multi-leaf reverse osmosis membrane element according to claim 6, wherein the second pair of folds (210) is located to the left of the third pair of folds (310), and the distance between the second pair of folds (210) and the third pair of folds (310) is D5, and D5 is 5 mm.
8. The rolling method of a multi-membrane reverse osmosis membrane element according to claim 7, wherein the left-right distance between the first folded edges (110) of the two upper and lower adjacent pre-installed membrane groups (410) is D6, so that: d6 is not less than 7mm and not more than 8 mm.
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| CN202111624209.1A CN114259873A (en) | 2021-12-28 | 2021-12-28 | Multi-membrane reverse osmosis membrane element rolling method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115999372A (en) * | 2022-12-27 | 2023-04-25 | 佛山市麦克罗美的滤芯设备制造有限公司 | Membrane element, manufacturing method thereof, filter element and water purification system |
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