KR101728633B1 - Making method a filter a roll of pape for a water purifier - Google Patents
Making method a filter a roll of pape for a water purifier Download PDFInfo
- Publication number
- KR101728633B1 KR101728633B1 KR1020160031525A KR20160031525A KR101728633B1 KR 101728633 B1 KR101728633 B1 KR 101728633B1 KR 1020160031525 A KR1020160031525 A KR 1020160031525A KR 20160031525 A KR20160031525 A KR 20160031525A KR 101728633 B1 KR101728633 B1 KR 101728633B1
- Authority
- KR
- South Korea
- Prior art keywords
- filter
- membrane
- mesh
- telescopic end
- fabric
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 28
- 239000012528 membrane Substances 0.000 claims abstract description 169
- 239000004744 fabric Substances 0.000 claims abstract description 94
- 239000000853 adhesive Substances 0.000 claims abstract description 32
- 230000001070 adhesive effect Effects 0.000 claims abstract description 25
- 238000005520 cutting process Methods 0.000 claims description 43
- 238000004804 winding Methods 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 23
- 239000002390 adhesive tape Substances 0.000 abstract description 4
- 239000000356 contaminant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Classifications
-
- 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
- B01D69/08—Hollow fibre membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
-
- 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
- B01D63/02—Hollow fibre modules
- B01D63/021—Manufacturing thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to an apparatus and method for manufacturing a roll-type multi-filter for a water purifier, and more particularly, to a method for manufacturing a roll-type multi-filter for a water purifier, comprising a plurality of membranes and a plurality of mesh meshes In order to simplify the manufacturing time and the manufacturing method by enabling a rollroll filter to be automated,
A membrane mesh fabric is inserted in a vertical direction and a mesh mesh fabric is horizontally inserted to form a mesh mesh fabric at the center of the membrane fabric so that the middle portion of the membrane fabric is folded to insert the mesh mesh fabric between the folded membrane fabrics, The filter mesh screen is supplied to the upper part of the membrane fabric, an adhesive is applied to the outer circumference of the upper part of the filter mesh screen, and a desired number of mesh screen ends are sequentially connected to the filter mesh And the end of the filter is rolled up like a filter net and the end is finished with an adhesive tape so that the membrane fabric folded in the inside of the filter and the mesh net can be rolled into a desired number of rolls in a desired number, And workability, thereby reducing production costs This has the advantage of improving productivity.
Description
The present invention relates to an apparatus and method for manufacturing a roll-type multi-filter for a water purifier, and more particularly, to a method for manufacturing a roll-type multi-filter for a water purifier, comprising a plurality of membranes and a plurality of mesh meshes It is possible to automate a rollover filter to simplify the manufacturing time and the manufacturing method.
Industrial wastewater generated from various factory facilities has flowed into the drinking water source due to the rapid increase in the industrial development rate in recent years. As a result, the tap water supplied to each household is taken from the water system of each river through the water intake system, However, when a large amount of disinfectant is used in the water purification process, if the water is used without any treatment, there is a problem caused by the odor, so that the present water or purified water is used for edible However, living water or purified water is easily contaminated by microorganisms and odor is generated.
As the environmental pollution deteriorates, various efforts are being made to obtain cleaner water. Especially, since the confidence in the water supply is low, a water purifier is installed in homes and offices to supply clean water to people.
The core component of this water purifier is a filter which filters contaminants contained in the water coming into the water purifier. It uses a roll-shaped filter that is made up of cylindrical filter wraps of a plurality of filter nets inside a pipe, The performance of the filter is deteriorated and the ability to remove contaminants is lowered. Therefore, the amount of the filter needs to be changed regularly.
In order to increase the filtering effect of the pollutants, the filter for water purifier recently has a membrane and a mesh telescopic pole, and a roll-type filter wound on a pipe is used to measure the performance of the rollover filter over time The ability to remove contaminants is reduced, and therefore, the amount of use thereof is gradually increasing because it must be replaced regularly.
In general, a roll-shaped filter used in a water purifier is used to remove foreign substances such as rust, dust, sand and the like contained in water to be purified. In the structure of the rolled filter, a plurality of membranes and a plurality of mesh networks Is wound into a pipe to form a hollow pipe shape.
This rolled filter is to remove impurities during the process of passing water from the outside of the pipe to the inside of the pipe, so that it is possible to filter out foreign matter more efficiently if the particles are filtered after the small foreign matter is filtered first, .
Accordingly, the use amount of such a rolled filter is gradually increased, and it has been devised to simplify the manufacturing time and the manufacturing method by automating the manufacturing method of the rolled type filter, and it is disclosed in Korean Patent Publication No. 10-2011-0006504 (2011. 1. On the 20th day, a membrane roll and a mesh mesh roll were provided and continuously supplied. The membrane was put in the vertical direction, and the mesh mesh fabric was horizontally inserted into the mesh fabric. The mesh mesh fabric was provided at the center of the membrane fabric. The mesh network fabric is inserted between the folded membrane fabrics while the middle portion is folded, an adhesive is applied to the outer peripheral edge of the upper portion of the folded membrane fabric, and the filter network is bonded to one side of the pipe, A membrane fabric coated with an adhesive is inserted into the filter cloth to form a filter cloth Wound into the end grain expression was taken out so as to finish to the adhesive tape.
However, in the conventional apparatus and method for manufacturing a rolled multi-type filter, a membrane is folded to the outside of the pipe, a mesh network is provided inside the folded membrane, and the pipe is rolled together with the filter net.
However, in recent years, in order to improve the quality and lifetime of the rolled filter, a membrane and a mesh network are wound around the membrane in a plurality of pipes having at least one membrane and mesh network provided inside the filter, In order to enhance the effect of the mesh network, it was difficult to provide a meshed mesh between the folded membranes and then mesh the meshed meshes with the meshed meshes between the membranes.
Disclosure of Invention Technical Problem [8] The present invention has been made in view of the above problems, and it is an object of the present invention to provide an automatic manufacturing apparatus and a method for manufacturing the membrane- To solve the manufacturing method,
A filter mesh screen, a membrane roll, and a mesh screen mesh are provided, and the membrane end is vertically pushed in. The mesh mesh fabric is horizontally inserted to form a mesh mesh fabric at the center of the membrane fabric, And the mesh filter is inserted between the folded membrane fabrics, and the filter filter cloth is supplied to the upper portion of the folded membrane fabric, the adhesive is applied to the outer circumference of the upper portion of the filter filter screen, and the mesh- A desired number of filter tapes are successively inserted into the filter net through a feeder, and the filter net is rolled up like a filter net, and the end is finished with an adhesive tape to be taken out. .
In order to accomplish the above object, the present invention provides a method of manufacturing a membrane roll, comprising the steps of feeding a membrane end (2) of a membrane roll (1) to a driving roller (8) A
A
A
The fast filter
The legs are pressed against the
First and
A
An
The filter
The
A
The end cut by the
The fast filter
The
A half-separating step of horizontally folding the membrane
A mesh net supply step of horizontally feeding the mesh telescopic end (4) of the mesh net roll (3) to the center of the horizontally folded membrane fabric (2);
The fast
The filter
A pushing step of folding the folded state of the
A cutting step of cutting the end of the membrane distal end (2) and the end of the mesh distal end (4) at the first and second cutting units (13, 14);
Cutting the end of the fast filter telescopic end (71) at the fifth cutter (73);
In the inside of the folded
The filter
A multi-bonding step of applying a desired number of filters by applying an adhesive on the outer peripheral edge of the upper part of the mesh telescopic end (4) provided inside the cut membrane cloth (2) in the cutting step;
A multi-feed process for feeding at least one mesh telescopic stage (4) into the folded membrane fabric (2) of the multi-adhesive process over the fast filter telescope stage (71) of the primary feed process;
The
The end cut off by the
When the
Therefore, according to the present invention, the distal end of the membrane is inserted in the vertical direction, the mesh mesh fabric is horizontally inserted as described above, and a mesh mesh fabric is provided at the center of the membrane fabric to fold the middle portion of the membrane fabric, The filter mesh is supplied to the upper part of the folded membrane fabric, the adhesive is applied to the outer circumference of the upper part of the filter mesh screen, and the desired number of mesh fibers is sequentially passed through the multi- Is inserted between the filter nets attached to one side of the pipe, rolled up like a filter net, and the end is closed with an adhesive tape to select a desired number of membrane fabrics and mesh meshes folded inside the filter, Advantages and workability of solving the conventional problems by making it possible Which would enhance the benefits to thereby reduce production costs and improve productivity.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram of a manufacturing apparatus showing an embodiment of the present invention
FIG. 2 is a perspective view of a rolled-
3 is a cross-sectional view of the rolled-up filter of the present invention
FIG. 4 is an exemplary view showing a state in which the membrane raw material of the present invention is supplied. FIG.
5 is an exemplary view showing a folded membrane fabric according to the present invention
6 is an exemplary view showing a state of supplying the fast filter telescopic end of the present invention
7 is an exemplary view showing a state in which the pipe of the present invention is wound
Figure 8 is an exemplary diagram illustrating a filter embodiment of the present invention.
9 is an exemplary view showing still another filter embodiment of the present invention.
In order to achieve the above-mentioned object, a mesh-
A
A
A
The legs are pressed against the
First and
A
An
The filter
The welded
A
The end cut by the
The fast filter
In order to achieve the above-mentioned object, a mesh-
A half-separating step of horizontally folding the membrane
A mesh net supply step of horizontally feeding the mesh telescopic end (4) of the mesh net roll (3) to the center of the horizontally folded membrane fabric (2);
The fast
The filter
A pushing step of folding the folded state of the
A cutting step of cutting the end of the membrane distal end (2) and the end of the mesh distal end (4) at the first and second cutting units (13, 14);
Cutting the end of the fast filter telescopic end (71) at the fifth cutter (73);
In the inside of the folded
The filter
A multi-bonding step of applying a desired number of filters by applying an adhesive on the outer peripheral edge of the upper part of the mesh telescopic end (4) provided inside the cut membrane cloth (2) in the cutting step;
A multi-feed process for feeding at least one mesh telescopic stage (4) into the folded membrane fabric (2) of the multi-adhesive process over the fast filter telescope stage (71) of the primary feed process;
The
The end cut off by the
When the
It is preferable to provide the
The adhesive of the adhesive step is provided with an adhesive 22 so as to be applied to the upper outer circumference of the fast filter
The first, second and
The third and
The
The multi-feeder 74 holds one side of the mesh
In another embodiment of the multi-feeder 74 as described above, the mesh
As shown in Fig. 7, the state in which the mesh distal ends 4 provided inside the
In the above manufacturing method, the
As shown in FIG. 6, the
The fast
The folded
The end of the filter
A
1: Membrane roll 2: Membrane fabric
3: Mesh clip 4: Mesh telephoto end
5: Filter clog 6: Tape roll
7: tape 8: drive roller
9: 1st tongs 10: 2nd tongs
11: The third tongue 12: The fourth tongue
13: first cutting machine 14: second cutting machine
15: third cutting machine 16: fourth cutting machine
17: roller 20:
21: receiving groove 22: adhesive
30: pipe 31: inlet
32: welder 33: material feeder
34: Catch device 40: Filter
50: press plate 51: filter telescope
60: Guide 61: Utility tool
70: Inner filter screen 71: Inner filter telescope
72: feed roller 73: fifth cutting machine
74: Multi-feeder
Claims (4)
A roller 17 for horizontally folding the membrane material 2 in the vertical direction,
A second tongue 10 for horizontally feeding the mesh telescopic end 4 of the mesh net roll 3 to the center of the horizontally folded membrane fabric 2,
The fast filter telescopic end 71 of the quick filter screen 70 is fed to the upper portion of the folded membrane fabric 2 and the fast filter telescopic end 71 is fastened along the guide 60 to the upper portion of the membrane fabric 2, A feed roller 72 which is fed by the oil tool 61,
The legs are pressed against the press plate 50 by pressing the folded state of the membrane fabric 2 in a state in which the fast filter telescopic end 71 is provided on the upper part of the membrane end 2 provided inside the mesh telescopic end 4,
First and second cutting units 13 and 14 for cutting the membrane end 2 and the end of the mesh telescopic end 4,
A fifth cutting unit 73 for cutting the end of the fast filter telescopic end 71,
An adhesive applicator 22 provided with a mesh telescopic end 4 inside the cut membrane 2 and applying an adhesive to the upper outer periphery of the upper filter telescopic end 71,
The filter telescopic end 51 of the filter net 5 is supplied to the outer periphery of the pipe 30 supplied through the inlet port 31 and is cut at the third cutter 15 to be separated from the starting face of the filter telescopic end 51 A welder 32 for welding the outer periphery of the pipe 30,
The welded pipe 30 is moved from the material supply device 33 to the filter telescopic end 51 in the welder 32 and the mesh telescopic end 4 is moved between the filter telescopic end 51 and the pipe 30 A multi-feeder 74 for feeding a desired number of membrane fabrics 2 provided in the inside thereof, and a membrane raw material 2 provided inside the upper filter high-speed filter stage and the mesh telephoto end 4,
A fastening device 34 for winding a membrane raw material 2 and a fast filter telescopic end 71 provided in the inside of the mesh telescopic end 4 supplied from the multi feeder 74 around the outer periphery of the pipe 30 and forming a roll )Wow,
The end cut by the fourth cutting machine 16 is adhered to one side of the outer periphery of the roll wound by the winding device 34 with the tape 7 and wound around the outer circumference of the roll by the winding device 34, Is completed by using a plurality of rollers.
The fast filter telescopic end 71 above the folded membrane fabric 2 is fed along the guide 60 and fed to the feed roller 72 by means of the oil tool 61 provided below the guide 60 Wherein the filter unit is a filter unit.
A half-separating step of horizontally folding the membrane raw material 2 in the vertical direction by a roller 17;
A mesh net supply step of horizontally feeding the mesh telescopic end (4) of the mesh net roll (3) to the center of the horizontally folded membrane fabric (2);
The fast filter telephoto end 71 of the quick filter screen 70 is poured along the guide 60 to the upper part of the folded membrane fabric 2 and the membrane is folded by the feed roller 72 through the oil tool 61, A fast filter telescopic end (71) is provided on the fabric (2)
The filter telescopic end 51 of the filter net 5 is supplied to the outer periphery of the pipe 30 supplied through the inlet port 31 and is cut at the third cutter 15 to be separated from the starting face of the filter telescopic end 51 A welding process for welding the outer periphery of the pipe (30) in the welder (32);
A pushing step of folding the folded state of the membrane fabric 2 in the half-divided state with the presser plate 50 in a state in which the fast filter telescopic end 71 is provided on the upper part of the membrane end 2 provided inside the mesh telephoto end 4; and;
A cutting step of cutting the end of the membrane distal end (2) and the end of the mesh distal end (4) at the first and second cutting units (13, 14);
Cutting the end of the fast filter telescopic end (71) at the fifth cutter (73);
In the inside of the folded membrane fabric 2 of the fast filter network supply process, an adhesive agent 22 is applied to the outer periphery of the upper portion of the fast filter element end provided on the upper part of the mesh filter end 4, A primary bonding step of applying;
The filter telescopic end 51 is moved from the welded pipe 32 of the welding process to the welded pipe 30 at the material supply device 33 so as to be sandwiched between the filter telescopic end 51 and the pipe 30, A primary supply step of supplying a membrane raw material (2) having a mesh telescopic end (4) provided under the fast filter telescopic end (71) with an adhesive applied thereon;
A multi-bonding step of applying a desired number of filters by applying an adhesive on the outer peripheral edge of the upper part of the mesh telescopic end (4) provided inside the cut membrane cloth (2) in the cutting step;
A multi-feed process for feeding at least one mesh telescopic stage (4) into the folded membrane fabric (2) of the multi-adhesive process over the fast filter telescope stage (71) of the primary feed process;
The membrane fabric 2 and the fast filter telescopic end 71 having the mesh telescopic end 4 provided inside the pipe 30 and the filter telescopic end sequentially through the multi supply process are separated from the pipe 30) and fixed by an adhesive;
The end cut off by the fourth cutting machine 16 is adhered to one side of the outer periphery of the roll rolled up by the winding machine 34 subjected to the rolling process with the tape 7 and wound around the outer circumference of the roll by the winding machine 34 And a finishing step of finishing the finishing step.
When the membrane end 2 provided inside the mesh telescopic end 4 of the multi-feed process is overlapped with the membrane feed end 4 provided in the multi-feeder 74, Wherein a fast filter telescopic end (71) is provided between the membrane ends (2) provided inside the mesh telescopic end (4).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020160031525A KR101728633B1 (en) | 2016-03-16 | 2016-03-16 | Making method a filter a roll of pape for a water purifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020160031525A KR101728633B1 (en) | 2016-03-16 | 2016-03-16 | Making method a filter a roll of pape for a water purifier |
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Family
ID=58742535
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KR1020160031525A KR101728633B1 (en) | 2016-03-16 | 2016-03-16 | Making method a filter a roll of pape for a water purifier |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101966115B1 (en) * | 2017-11-14 | 2019-04-05 | (주)피엔티 | Apparatus for manufacturing reverse osmosis filter module |
KR20190103809A (en) * | 2018-02-28 | 2019-09-05 | 박용호 | Making method a filter a roll of pape for a water purifier |
CN113491949A (en) * | 2020-03-21 | 2021-10-12 | 佛山市顺德区美的饮水机制造有限公司 | Reverse osmosis membrane element, preparation method thereof and filter element |
WO2022159694A1 (en) * | 2021-01-21 | 2022-07-28 | -Renew Health Limited | Leaf assembly for water treatment and method of assembly thereof |
CN118108308A (en) * | 2024-04-22 | 2024-05-31 | 广东威特雅环境科技有限公司 | Concentration decrement processing apparatus of high salt waste water |
Citations (3)
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KR200145559Y1 (en) | 1997-02-01 | 1999-06-15 | 고생곤 | Apparatus for preparation of filter element |
KR100495160B1 (en) | 2003-04-01 | 2005-06-13 | 김정범 | Sediment filter manufacturing apparatus |
US20090199528A1 (en) | 2006-12-28 | 2009-08-13 | Gyung Soo Kim | Manufacturing method of filter media available at medium and high temperature exhaust gas using foam coating technology and filter media manufactured thereby |
-
2016
- 2016-03-16 KR KR1020160031525A patent/KR101728633B1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR200145559Y1 (en) | 1997-02-01 | 1999-06-15 | 고생곤 | Apparatus for preparation of filter element |
KR100495160B1 (en) | 2003-04-01 | 2005-06-13 | 김정범 | Sediment filter manufacturing apparatus |
US20090199528A1 (en) | 2006-12-28 | 2009-08-13 | Gyung Soo Kim | Manufacturing method of filter media available at medium and high temperature exhaust gas using foam coating technology and filter media manufactured thereby |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101966115B1 (en) * | 2017-11-14 | 2019-04-05 | (주)피엔티 | Apparatus for manufacturing reverse osmosis filter module |
KR20190103809A (en) * | 2018-02-28 | 2019-09-05 | 박용호 | Making method a filter a roll of pape for a water purifier |
KR102073071B1 (en) * | 2018-02-28 | 2020-02-04 | 박용호 | Making method a filter a roll of pape for a water purifier |
CN113491949A (en) * | 2020-03-21 | 2021-10-12 | 佛山市顺德区美的饮水机制造有限公司 | Reverse osmosis membrane element, preparation method thereof and filter element |
WO2022159694A1 (en) * | 2021-01-21 | 2022-07-28 | -Renew Health Limited | Leaf assembly for water treatment and method of assembly thereof |
CN118108308A (en) * | 2024-04-22 | 2024-05-31 | 广东威特雅环境科技有限公司 | Concentration decrement processing apparatus of high salt waste water |
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