CN108392993B - Filter element and water purifying equipment - Google Patents
Filter element and water purifying equipment Download PDFInfo
- Publication number
- CN108392993B CN108392993B CN201710065406.1A CN201710065406A CN108392993B CN 108392993 B CN108392993 B CN 108392993B CN 201710065406 A CN201710065406 A CN 201710065406A CN 108392993 B CN108392993 B CN 108392993B
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- China
- Prior art keywords
- filter
- film
- filter layer
- layer
- water
- 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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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 239000012528 membrane Substances 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 6
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 230000001788 irregular Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 2
- 238000000746 purification Methods 0.000 claims 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 9
- 238000004804 winding Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/26—Polyalkenes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/114—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
- B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/04—Characteristic thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/06—Surface irregularities
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a filter element and water purifying equipment, wherein the filter element comprises a shell, a water inlet and a water outlet are arranged on the shell, and a waterway which is communicated with the water inlet and the water outlet is arranged in the shell; and the PP filter layer is arranged in the waterway and comprises at least one layer of PP film, and the surface of the PP film is arranged in a concave-convex surface. The technical scheme of the invention can increase the dirt holding capacity of the PP filter layer and prolong the service life of the PP filter layer.
Description
Technical Field
The invention relates to the field of water purifying equipment, in particular to a filter element and water purifying equipment.
Background
The PP filter layer of the existing filter element has weaker dirt holding capacity, so that the service life of the PP filter layer is shorter, after the filter element is used for a period of time, the PP filter layer has the problems that the filtering capacity is reduced, the filtered water cannot reach the sanitary standard and the like, and therefore the PP filter layer needs to be replaced in time to ensure the normal use of the filter element. This results in frequent replacement of the PP filter layer when the cartridge is used, resulting in inconvenience for the user.
Disclosure of Invention
The invention mainly aims to provide a filter element, which aims to improve the dirt receiving capacity of a PP filter layer and prolong the service life of the PP filter layer.
In order to achieve the purpose, the filter element provided by the invention comprises a shell, wherein a water inlet and a water outlet are arranged on the shell, and a waterway which is communicated with the water inlet and the water outlet is arranged in the shell; and the PP filter layer is arranged in the waterway and comprises at least one layer of PP film, and the surface of the PP film is arranged in a concave-convex surface.
Preferably, the PP membrane is made of PP non-woven fabric or PP cotton.
Preferably, the height of the protrusions and the depth of the depressions of the PP film are both in the range of 0.1mm to 2mm.
Preferably, the area of the projection and depression of the PP film onto the PP film is in the range of 0.1mm 2 ～2mm 2 。
Preferably, the ratio of the total area of the protrusions and depressions of the PP film projected onto the PP film to the PP film area is in the range of 0.25 to 0.75.
Preferably, the diameter of the filter pores of the PP filter layer is in the range of 5 μm to 20 μm.
Preferably, the thickness of the PP film is 0.1 mm-1 mm.
Preferably, the filter further comprises a second filter layer, wherein the PP filter layer and the second filter layer are both in cylindrical arrangement, the second filter layer is sleeved in the PP filter layer, and liquid to be filtered flows from the PP filter layer to the second filter layer.
Preferably, the second filter layer is an activated carbon fiber winding layer.
Preferably, the thickness ratio of the PP filter layer to the activated carbon fiber winding layer is 1-5.
The invention also provides water purifying equipment, which comprises a filter element, wherein the filter element comprises a shell, a water inlet and a water outlet are arranged on the shell, and a waterway which is communicated with the water inlet and the water outlet is arranged in the shell; and the PP filter layer is arranged in the waterway and comprises at least one layer of PP film, and the surface of the PP film is arranged in a concave-convex surface.
According to the technical scheme, the surface of the PP film forming the PP filter layer is arranged in the concave-convex surface, water entering the filter element from the water inlet flows out from the water outlet after being filtered by the PP filter layer, and as the surface of the PP film is arranged in the concave-convex surface, the pollution-receiving capacity of the PP film is improved, more flow water can be filtered, and the service life of the PP film is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of a filter cartridge of the present invention;
FIG. 2 is a schematic view of the filter layer of the cartridge of FIG. 1;
fig. 3 is an enlarged schematic view of the structure at a in fig. 2.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 100 | Filter element | 31 | PP film |
| 10 | Central tube | 311 | Filter hole |
| 20 | Activated carbon fiber winding layer | 312 | Protrusions |
| 30 | PP filter layer | 313 | Recess in the bottom of the container |
| 40 | Shell body |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a filter element.
In one embodiment of the present invention, as shown in fig. 1 to 3, the filter cartridge 100 is used for a water purifying apparatus, and is characterized by comprising: the shell 40 is provided with a water inlet and a water outlet, and a waterway communicated with the water inlet and the water outlet is arranged in the shell 40; and the PP filter layer 30 is arranged in the waterway, the PP filter layer 30 comprises at least one layer of PP film 31, and the surface of the PP film is arranged in a concave-convex surface.
Specifically, in the filtering process, raw water enters the filter element 100 from the water inlet, is filtered by the PP filter layer 30, and then flows out from the water outlet. The surface of the PP film 31 is provided with concave-convex, so that the roughness of the surface of the PP film 31 is improved, more pollutants can be contained on the surface of the PP film 31, the pollution containing capacity of the PP film 31 is relatively improved, and the service life of the PP film 31 is prolonged. Wherein the PP film 31 in this example has a service life that is doubled over that of melt blown PP cotton under the same conditions. In this embodiment, the thickness of the PP film 31 is constant (of course, the PP film 31 may have a certain error in thickness), the surface thereof is uneven, the PP film 31 is provided in a convex shape on one side and is provided in a concave shape on the other side correspondingly, of course, both the convex and concave surfaces are provided on the same side of the PP film 31, and the following discussion is made on one side of the PP film. A reference surface is provided on each side of the PP film 31, and the protrusion 312 and the recess 313 on one side are opposite to the reference surface on the other side, and the side on the PP film 31 has a level overlapping with the reference surface in addition to the protrusion 312 and the recess 313, and the relationship between the protrusion 312 and the recess 313 and the PP film 31 refers to the relationship between the protrusion 312 and the recess 313 and the reference surface on the corresponding side. And the thickness of the PP film 31 refers to the thickness of the surface of both sides of the PP film 31 at the corresponding place.
When the PP filter layer 30 and other types of filter layers together form the filter element 100, the PP filter layer 30 has improved dirt holding capacity, so that the filter element 100 is not required to be frequently cleaned or replaced, the use is more convenient, and the cost is reduced. When the PP filter layer 30 is combined with other filter layers, the water flowing in from the water inlet is filtered by the PP filter layer 30, then flows through the other filter layers, and finally flows out from the water outlet. The PP filter layer 30 filters out pollutants in the water, so that the water entering other filter layers is relatively clean, and the corresponding filtering capability of the water is better exerted.
In this embodiment, as shown in fig. 1, the filter element 100 is in a cylindrical shape, a cylindrical central tube 10 is disposed in the filter element, a plurality of water through holes are disposed on the central tube 10, one end of the central tube 10 is connected with the water outlet, the water through holes are communicated with the water outlet along the inside of the central tube 10, the PP filter layer 30 is sleeved on the central tube 10, and other filter layers are sleeved between the PP filter layer 30 and the central tube 10. When the PP filter layer 30 is composed of a plurality of PP films 31, the PP filter layer 30 may be formed by wrapping the PP films 31, or may be formed by setting up a plurality of PP films 31 on one another, and preferably, two adjacent overlapping layers overlap at the joint therebetween. Shown in fig. 2 is a PP filter layer 30 formed by wrapping PP film 31.
Preferably, the PP film 31 is made of PP nonwoven fabric or/and PP cotton. Wherein the PP cotton can be wound PP cotton. The PP film 31 made of the above materials can reduce the cost and make the PP filter layer 30 have a strong dirt-receiving capacity.
As shown in fig. 3, the height of the protrusions 312 and the depth of the depressions 313 of the PP film range from 0.1mm to 2mm. Because the thickness of the PP film 31 is thinner, the too high height of the protrusion 312 or the depth of the recess 313 is set, so that the number of layers of the PP film 31 of the PP filter layer 30 with the same thickness is smaller, the filtering capability of the PP filter layer 30 is reduced, and the too low height of the protrusion 312 or the depth of the recess 313 further reduces the dirt holding capability of the PP film 31, so that the expected effect cannot be achieved. The height of the convex 312 or the depth of the concave 313 of the concave-convex surface is set within the above range, so that the PP film 31 can be manufactured and processed conveniently, and sufficient dirt holding capacity can be ensured. Wherein the height of the protrusions 312 and the depth of the depressions 313 are both relative to the PP film datum on that side.
Further, the area of the projection of the protrusions 312 and depressions 313 of the PP film onto the PP film 31 is in the range of 0.1mm 2 ～2mm 2 . Here, it should be understood that the recesses 313 or protrusions 312 on the PP film 31 may be similar in size or different in size. By setting the projection area of the protrusion 312 or the recess 313 on the PP film 31 within the above-described range, it is not only avoided that the protrusion 312 or the recess 313 on the PP film 31 is too small, which is not beneficial to improving the roughness of the PP film 31, but also it is avoided that the protrusion 312 or the recess 312 of the PP film 31 is too large, which results in that the protrusion 312 and the recess 313 cannot be provided sufficiently on the same area, which is not beneficial to improving the roughness of the PP film 31. Projection here refers to projection onto the reference plane of the PP film on that side, the same applies below.
Wherein the ratio of the total area of the protrusions 312 and the depressions 313 of the PP film projected onto the PP film 31 ranges from 0.25 to 0.75. Setting the ratio in the above range can ensure the density of the protrusions 312 and the depressions 313, ensure the sufficient roughness of the PP film 31, and avoid the excessively high ratio from increasing the difficulty of manufacturing the PP film 31.
The diameter of the filter hole 311 in the PP filter layer 30 ranges from 5 μm to 20. Mu.m. The filter holes 311 are arranged in the range, so that the PP filter layer 30 can better filter pollutants in water, and the speed of water passing through the PP filter layer 30 is ensured. It should be appreciated that the filter holes 311 are uniformly distributed on the PP film 31 and a certain distribution density is ensured. Wherein, the concave 313 and convex 312 of the PP film 31 can be provided with filter holes.
The thickness of the PP film 31 is 0.1mm to 1mm. The concave 312 and the convex 312 on the PP film 31 are arranged in an irregular shape, so that the roughness is increased, and the dirt holding capacity of the PP film 31 is improved.
Further, the filter layer used in combination with the PP filter layer 30 is the activated carbon fiber wrapping layer 20. The PP filter layer 30 and the activated carbon fiber winding layer 20 are both in cylindrical shape, the PP filter layer 30 is sleeved on the activated carbon fiber winding layer 20, water to be filtered flows from the PP filter layer 30 to the activated carbon fiber winding layer 20, and the water can be filtered completely by the double-layer filter element, so that filtered water meeting the sanitary standard is obtained.
Wherein the ratio of the thickness of the PP filter layer 30 to the activated carbon fiber winding layer 20 ranges from 1 to 5. The arrangement can ensure that the filtered water is clean and sanitary. Wherein, when setting up PP filter layer 30 and active carbon fiber and changeing around layer 20, should guarantee that life is unanimous between them to can unify the change after making filter core 100 use, guarantee the make full use of each filter layer.
The invention also provides a water purifying device which comprises a filter element, and the specific structure of the filter element refers to the embodiment, and because the water purifying device adopts all the technical schemes of all the embodiments, the water purifying device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is not repeated here.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. A filter cartridge for a water purification apparatus, the filter cartridge comprising:
the shell is provided with a water inlet and a water outlet, and a waterway which is communicated with the water inlet and the water outlet is arranged in the shell; and
the PP filter layer is arranged in the waterway and comprises at least one layer of PP film, the surface of the PP film is provided with an irregular concave-convex surface, the thickness of the PP film is unchanged, each side surface of the PP film is provided with a reference surface, and the range of the raised height and the recessed depth of the PP film relative to the reference surface is 0.1-2 mm.
2. The filter element according to claim 1, wherein the PP membrane is made of PP non-woven fabric or PP cotton.
3. The filter cartridge of claim 1, wherein the area of the protrusions and depressions of the PP membrane projected onto the reference surface of the PP membrane is in the range of 0.1mm to 2mm.
4. The filter cartridge of claim 1, wherein the ratio of the total area of the protrusions and depressions of the PP membrane projected onto the reference surface of the PP membrane to the area of the PP membrane ranges from 0.25 to 0.75.
5. The filter cartridge of claim 1, wherein the PP filter layer has a filter aperture diameter in the range of 5 μm to 20 μm.
6. The filter cartridge of claim 1, wherein the PP membrane has a thickness of 0.1mm to 1mm.
7. The filter cartridge of any one of claims 1 to 6, further comprising a second filter layer, wherein the PP filter layer and the second filter layer are both cylindrically configured, and wherein the second filter layer is coaxially disposed within the PP filter layer, and a liquid to be filtered flows from the PP filter layer to the second filter layer.
8. The filter cartridge of claim 7, wherein the second filter layer is a wrapped layer of activated carbon fibers.
9. The filter cartridge of claim 7, wherein the PP filter layer and the second filter layer have a thickness ratio in the range of 1 to 5.
10. A water purification apparatus comprising a cartridge according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710065406.1A CN108392993B (en) | 2017-02-04 | 2017-02-04 | Filter element and water purifying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710065406.1A CN108392993B (en) | 2017-02-04 | 2017-02-04 | Filter element and water purifying equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108392993A CN108392993A (en) | 2018-08-14 |
| CN108392993B true CN108392993B (en) | 2023-09-01 |
Family
ID=63093543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710065406.1A Active CN108392993B (en) | 2017-02-04 | 2017-02-04 | Filter element and water purifying equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108392993B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1179350A (en) * | 1997-12-12 | 1998-04-22 | 马昆 | Structural filter element for purifying water and preparing process thereof |
| JP2001269556A (en) * | 2000-01-20 | 2001-10-02 | Asahi Kasei Corp | Polyethylene hollow fiber-like porous membrane |
| CN203379680U (en) * | 2013-08-14 | 2014-01-08 | 天台县永盛滤网有限公司 | Metal sintering felt filter element |
| CN103933784A (en) * | 2014-04-09 | 2014-07-23 | 东华大学 | Preparation method of durable oil-repellant fiber filtration material |
| CN203904091U (en) * | 2014-05-27 | 2014-10-29 | 佛山市顺德区美的饮水机制造有限公司 | Compound reverse osmosis filter element and purifier adopting same |
| CN206463802U (en) * | 2017-02-04 | 2017-09-05 | 佛山市顺德区美的饮水机制造有限公司 | Filter core and purifier |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103080016B (en) * | 2010-08-12 | 2015-05-27 | 三菱丽阳可菱水株式会社 | Water-purifying cartridge |
-
2017
- 2017-02-04 CN CN201710065406.1A patent/CN108392993B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1179350A (en) * | 1997-12-12 | 1998-04-22 | 马昆 | Structural filter element for purifying water and preparing process thereof |
| JP2001269556A (en) * | 2000-01-20 | 2001-10-02 | Asahi Kasei Corp | Polyethylene hollow fiber-like porous membrane |
| CN203379680U (en) * | 2013-08-14 | 2014-01-08 | 天台县永盛滤网有限公司 | Metal sintering felt filter element |
| CN103933784A (en) * | 2014-04-09 | 2014-07-23 | 东华大学 | Preparation method of durable oil-repellant fiber filtration material |
| CN203904091U (en) * | 2014-05-27 | 2014-10-29 | 佛山市顺德区美的饮水机制造有限公司 | Compound reverse osmosis filter element and purifier adopting same |
| CN206463802U (en) * | 2017-02-04 | 2017-09-05 | 佛山市顺德区美的饮水机制造有限公司 | Filter core and purifier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108392993A (en) | 2018-08-14 |
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