CN101559330A - Asymmetric metal film filtering element - Google Patents
Asymmetric metal film filtering element Download PDFInfo
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- CN101559330A CN101559330A CNA2009100744190A CN200910074419A CN101559330A CN 101559330 A CN101559330 A CN 101559330A CN A2009100744190 A CNA2009100744190 A CN A2009100744190A CN 200910074419 A CN200910074419 A CN 200910074419A CN 101559330 A CN101559330 A CN 101559330A
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- film
- metal film
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- filtering element
- filtering
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Abstract
The invention relates to an asymmetric metal film filtering element used for filtering various materials and separating micro-diameter particles, which comprises a metal porous sheet and a layer of filter film which consists of a metal film and an organic film or a ceramic film and is arranged on the upper surface or the lower surface of the metal porous sheet. The asymmetric metal film filtering element can optimize two indexes of filter capacity and filter element strength, ensure the mechanical strength of a filter element, nearly not generate pressure loss, and further ensure not to influence the circulation; and the function of separating solid particles is borne by the metal film, the organic film or the ceramic film which is sintered with a porous substrate together, and the separation accuracy can reach submicron class; because the film is thin, the blockage is not easy to happen, the filter effect is better, and the accuracy is higher; and when the film is backwashed for regeneration, filtercake impurity liquid is easy to fall off from the surface of the film so as to prolong the service life of the filtering element.
Description
Technical field
The present invention relates to a kind of asymmetric metal film filtering element that is used to filter various materials and separating micro-diameter particles.
Background technology
At present, the filtration fraction of employed metal dust filter element all is a symmetrical structure in the industrial production, and symmetrical structure element filters precision is the highest can only reach 0.5 micron for this, and circulation is extremely low when adopting the high accuracy filter element; Because it is the porous material of homogeneous, in order to guarantee enough mechanical strengths, its thickness generally designs about 2.5mm-3.0mm, this just makes the inner labyrinth-like micropore of porous material extend longer, circulation reduces, and enter wherein as particulate and stop up easily, and easy to clean not after the obstruction, thereby influence filter effect and filter efficiency, shorten the service life of filter element.
Summary of the invention
The technical problem that the present invention solves provides a kind of filtering accuracy height, reduces the accumulation obstruction, improves filter efficiency, prolongs the filter element asymmetric metal film filtering element in service life.
The present invention adopts following technical scheme:
The present invention includes metallic porous sheet and be arranged on the filter membrane that the one deck on metallic porous sheet upper surface or the lower surface is made of metal film, organic film or ceramic membrane.
Metallic porous sheet of the present invention is cylindric, on the cylindrical metal porous plate inner surface or outer surface be provided with the filter membrane that one deck is made of metal film, organic film or ceramic membrane.
Good effect of the present invention is: it is metallic porous sheet as base material that the present invention selects gross porosity footpath porous material for use, filter membrane in substrate surface spraying or the metallic film in the fine aperture of sintering one deck, organic film or ceramic membrane formation, thereby optimize filter capacity and two indexs of filer element strength, when guaranteeing the filter core mechanical strength, produce pressure loss hardly, thereby guarantee that its circulation is also unaffected; Function of separating solid particles, then by bearing with porous substrate sintering metallic film, organic film or ceramic membrane together, separation accuracy can reach submicron order, because this layer film thinner thickness, thus be difficult for blocking, and also filter effect is better, precision is higher, in the time of backwash and regeneration, filter cake impurity liquid comes off from its surface easily, thereby has prolonged the service life of filter element.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a cylinder-like structure schematic diagram of the present invention;
Fig. 3 is a metal film water penetration performance diagram of the present invention;
Fig. 4 is a metal film air permeability performance diagram of the present invention;
Fig. 5 is metal film wall thickness of the present invention-drooping characteristic curve map.
The specific embodiment
As shown in Figure 1, filter element of the present invention is made base material by gross porosity footpath sintering metal porous plate 1, sprays or the ultra-thin metal film of sintering last layer the filter membrane 2 that ceramic membrane or organic film constitute thereon on surface or the lower surface.
As shown in Figure 2, filter element of the present invention is that metallic porous sheet 1 is made base material by gross porosity footpath tubular sintered porous material, spraying or the ultra-thin metal film of sintering last layer on outer surface or the inner surface, the filter membrane 2 that ceramic membrane or organic film constitute.
The present invention optimizes filter capacity and filer element strength, when guaranteeing the filter core mechanical strength, produces pressure loss hardly, thereby guarantees that its circulation is also unaffected; Function of separating solid particles, then by bearing with porous substrate sintering metallic film, organic film or ceramic membrane together, separation accuracy can reach submicron order, because this layer film thinner thickness, thus be difficult for blocking, and also filter effect is better, precision is higher, in the time of backwash and regeneration, filter cake impurity liquid comes off from its surface easily, thereby has prolonged the service life of filter element.
Metal film water penetration characteristic curve test of the present invention (shown in the accompanying drawing 3):
Method of testing standard: ISO 4022
Specimen shape: disk, thickness 3mm
Filter area: 50.26cm2/
Water temperature: 20 ℃
Metal film air permeability characteristic curve test of the present invention (shown in the accompanying drawing 4):
Method of testing standard: ISO 4022
Specimen shape: disk, thickness 3mm
Filter area: 50.26cm2/
Air themperature: 20 ℃
Air pressure: 101.3KPa
Shown in accompanying drawing 3,4:
1-1 is the metal film filtering element curve of 0.5 micron of traditional filtering accuracy among the figure;
1-2 is the metal film filtering element curve of 1.0 microns of traditional filtering accuracies among the figure;
1-3 is the metal film filtering element curve of 3.0 microns of traditional filtering accuracies among the figure;
2-1 is the asymmetric metal film filtering element curve of 0.5 micron of filtering accuracy among the figure;
2-2 is the asymmetric metal film filtering element curve of 1.0 microns of filtering accuracies among the figure;
2-3 is the asymmetric metal film filtering element curve of 3.0 microns of filtering accuracies among the figure.
Test result:
Curve shows as shown in accompanying drawing 3,4: under identical filtering accuracy, asymmetric metal film filtering element is under identical pressure drop situation, and its flow permeable and air all obviously is better than traditional symmetric form metal film filtering element.
Metal film wall thickness of the present invention-drooping characteristic curve test (shown in the accompanying drawing 5):
I is asymmetric metal film filtering element wall thickness-drooping characteristic curve among the figure
II is traditional symmetric form metal film filtering element wall thickness-drooping characteristic curve among the figure
Curve shows as shown in accompanying drawing 5: under identical filtering accuracy, asymmetric metal film filtering element is under identical wall thickness condition, and its pressure drop all is significantly less than traditional symmetric form metal film filtering element, thereby has guaranteed the circulation of filtering.
Claims (2)
1, a kind of asymmetric metal film filtering element is characterized in that it comprises metallic porous sheet (1) and is arranged on the filter membrane (2) that the one deck on metallic porous sheet (1) upper surface or the lower surface is made of metal film, organic film or ceramic membrane.
2, a kind of asymmetric metal film filtering element according to claim 1, it is characterized in that metallic porous sheet (1) for cylindric, on cylindrical metal porous plate (1) inner surface or outer surface be provided with the filter membrane (2) that one deck is made of metal film, organic film or ceramic membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100744190A CN101559330A (en) | 2009-05-22 | 2009-05-22 | Asymmetric metal film filtering element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100744190A CN101559330A (en) | 2009-05-22 | 2009-05-22 | Asymmetric metal film filtering element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101559330A true CN101559330A (en) | 2009-10-21 |
Family
ID=41218410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100744190A Pending CN101559330A (en) | 2009-05-22 | 2009-05-22 | Asymmetric metal film filtering element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101559330A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489079A (en) * | 2011-12-30 | 2012-06-13 | 安泰科技股份有限公司 | Asymmetric metal filter core and preparation method thereof |
-
2009
- 2009-05-22 CN CNA2009100744190A patent/CN101559330A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489079A (en) * | 2011-12-30 | 2012-06-13 | 安泰科技股份有限公司 | Asymmetric metal filter core and preparation method thereof |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20091021 |