CN201454427U

CN201454427U - Non-symmetric metal film filter component

Info

Publication number: CN201454427U
Application number: CN2009201029001U
Authority: CN
Inventors: 张志超; 张志军
Original assignee: SHIJIAZHUANG BOET INORGANIC MEMBRANE SEPARATION EQUIPMENT CO Ltd
Current assignee: SHIJIAZHUANG BOET INORGANIC MEMBRANE SEPARATION EQUIPMENT CO Ltd
Priority date: 2009-05-22
Filing date: 2009-05-22
Publication date: 2010-05-12
Anticipated expiration: 2019-05-22

Abstract

The utility model relates to a non-symmetric metal film filter component for filtering various materials and separating micro-diameter particles, which comprises a metal porous plate and a filter film constructed by a metal film, an organic film or a ceramic film and arranged on the upper surface or the lower surface of the metal porous plate. the non-symmetric metal filter component can optimize two indexes of filtration capacity and filter core strength, almost no pressure loss is generated while the mechanical strength of the filter core is ensured, so the discharge volume is also ensured not to be affected; the function of solid particle separation is realized by the metal film, the organic film or the ceramic film sintered with porous substrate, the separation accuracy can reach nanometer class, as the film thickness is lower, the blockage is not easy to occur, the filtration effect is better, the accuracy is higher, the filter cake impurity solution can easily fall off from the surface of the filter film during backflushing and regeneration process, thereby improving the service life of the filter component.

Description

Asymmetric metal film filtering element

Technical field

The utility model 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 utility model 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 utility model adopts following technical scheme:

The utility model comprises metallic porous sheet and is 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.

The utility model metallic porous sheet 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 utility model is: it is metallic porous sheet as base material that the utility model is selected 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 the utility model structural representation;

Fig. 2 is the utility model cylinder-like structure schematic diagram;

Fig. 3 is the utility model metal film water penetration performance diagram;

Fig. 4 is the utility model metal film air permeability performance diagram;

Fig. 5 is the utility model metal film wall thickness-drooping characteristic curve map.

The specific embodiment

As shown in Figure 1, the utility model filter element 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, the utility model filter element 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 utility model is optimized 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.

The utility model metal film water penetration characteristic curve test (shown in the accompanying drawing 3):

Method of testing standard: ISO 4022

Specimen shape: disk, thickness 3mm

Filter area: 50.26cm2/

Water temperature: 20 ℃

The utility model metal film air permeability characteristic curve test (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.

The utility model metal film wall thickness-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

1. an 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.