CN201436058U - Folded type polytetrafluoroethylene composite porous filtering membrane filter core - Google Patents
Folded type polytetrafluoroethylene composite porous filtering membrane filter core Download PDFInfo
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- CN201436058U CN201436058U CN2009200751310U CN200920075131U CN201436058U CN 201436058 U CN201436058 U CN 201436058U CN 2009200751310 U CN2009200751310 U CN 2009200751310U CN 200920075131 U CN200920075131 U CN 200920075131U CN 201436058 U CN201436058 U CN 201436058U
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Abstract
A folded type polytetrafluoroethylene composite porous filtering membrane filter core comprises a filtering medium layer, an inner support cylinder and an outer support cylinder; the filtering medium layer is folded into fins and surrounded around the external circumference of the support cylinder; the outer support cylinder is disposed on outside of the filtering medium layer; the filtering medium layer is composed of a core filtering layer, a pre-filtering layer and a support layer by stacking up; the pre-filtering layer is disposed on the upstream of the core filtering layer; the support layer is disposed on the downstream of the core filtering layer; the core filtering is composed of polytetrafluoroethylene composite membrane; the pre-filtering layer is composed of two terylene non-woven fabric layers; and the support layer is composed of a terylene non-woven fabric layer and a polypropylene netted material layer. In the utility model, the polytetrafluoroethylene composite membrane is used as filter membrane, the terylene non-woven fabric on its upstream, and the terylene non-woven fabric and polypropylene netted material on its downstream provides enough mechanical strength of filter core, and increases the dust and pollutant holding quantity of the filter core; the terylene non-woven fabric and the polypropylene netted material with light weights optimizes the fluid flow channel of the filter core, increases air throughput, and reduces fluid resistance.
Description
Technical field:
The utility model relates to air purifying process, relates in particular to the device that removes bacterium in air, remove particulate, particularly a kind of polytetrafluoroethylene (PTFE) composite microporous filter film folding type filter element.
Background technology:
The aseptic filtration of the air of industries such as pharmacy fermentation, bioengineering, food and drink, modern chemical industry, electronics industry, environmental protection, remove and to use various filter in a large number in the micro particle filtering.Filter medium in the early stage air filter adopts cotton or glass cotton or active carbon etc. more, and there is the problem that filtering accuracy is poor, filter efficiency is low, service life is short, initial resistance is high, energy consumption is big in these filters.In the prior art, extensively adopt collapsible membrane type filter core in filter, the filter medium that collapsible membrane type filter core adopts mainly contains the inorganic material such as ultra-fine fibre glass of macromolecular material such as polyvinylidene fluoride microporous barrier, stretched polytetrafluoroethylene film and surface applied hydrophober.The ultra-fine fibre glass of above-mentioned macromolecular material and coating hydrophober or exist a little less than the hydrophobicity exists perhaps that resistance just is big, pressure drop is high, perhaps has shortcomings such as bad mechanical strength.The applicant has proposed a kind of polytetrafluoroethylcomposite composite film in the ZL03129430.8 granted patent, existing strong hydrophobic performance has strong mechanical strength again, also has advantages such as just resistance is low, pressure drop is low.In existing filter cartridge construction, in order to guarantee the filter core mechanical strength, the film both sides are that the upstream and downstream side of membrane filtration respectively uses a floor height gram degree (generally greater than 50g/m
2) the polypropylene filament nonwoven as protective layer, still, Gao Kedu polypropylene filament nonwoven often causes polytetrafluoroethylcomposite composite film damage in folding process, and polypropylene backing material temperature tolerance is relatively poor, the anti-moise-heat sterilization of filter core is poor.
Summary of the invention:
The purpose of this utility model is to provide a kind of collapsible polytetrafluoroethylene (PTFE) composite microporous filter film filter core, and described this collapsible polytetrafluoroethylene (PTFE) composite microporous filter film filter core will solve that filter membrane damages easily in the prior art, the technical problem of backing material temperature tolerance difference.
This collapsible polytetrafluoroethylene (PTFE) composite microporous filter film filter core of the present utility model is by filtering medium layer, interior support tube and outer support tube constitute, described filtering medium layer is folded into the fin back wall on the excircle of described interior support tube, support tube was axial in the fold line of filtering medium layer was parallel to, described outer support tube is set in the outside of the cylinder that filtering medium layer surrounds, wherein, described filtering medium layer is by a core filter course, a pre-filtering layer and the superimposed formation of supporting layer, described pre-filtering layer is arranged on the upstream side of described core filter course, described supporting layer is arranged on the downstream of core filter course, the core filter course is made of one deck polytetrafluoroethylcomposite composite film, the pre-filtering layer is overlapped by two-layer terylene non-woven fabric, supporting layer is overlapped by one deck terylene non-woven fabric and one deck polypropylene mesh works, the downstream face of terylene non-woven fabric in the supporting layer and polytetrafluoroethylcomposite composite film is adjacent, two adjacent fins all are welded to connect arbitrarily, the upper end of support tube and outer support tube is welded with a upper end cover in described, the lower end of interior support tube and outer support tube is welded with a bottom end cover, be welded with an orientation triangle fin on the described upper end cover, the downside of described bottom end cover is welded with an interface pipe fitting.
Further, the excircle of described interface pipe fitting is provided with the O RunddichtringO.
Further, the quality of the described terylene non-woven fabric of every square metre of area is 30 grams.
Concrete, the welding described in the utility model can be adopted ultrasonic wave of the prior art or sweat soldering technology.
Operation principle of the present utility model is: polytetrafluoroethylcomposite composite film is as filter membrane, the two-layer terylene non-woven fabric of its upstream side and the terylene non-woven fabric in downstream and polypropylene mesh works have guaranteed the mechanical strength of filter core, increased the appearance dirt pollutant holding capability of filter core, low gram degree terylene non-woven fabric and polypropylene mesh works have been optimized the fluid course of filter core, increase air flux, fluid resistance is little.
The utility model and prior art compare, and its effect is actively with tangible.The utility model is provided with terylene non-woven fabric at the upstream side of polytetrafluoroethylcomposite composite film, the downstream is provided with terylene non-woven fabric and polypropylene mesh works, guaranteed the mechanical strength of filter core, increased the appearance dirt pollutant holding capability of filter core, low gram degree terylene non-woven fabric and polypropylene mesh works have been optimized the fluid course of filter core, increase air flux, fluid resistance is little.
Description of drawings:
Fig. 1 is the structural representation of collapsible polytetrafluoroethylene (PTFE) composite microporous filter film filter core of the present utility model.
The specific embodiment:
Embodiment 1:
As shown in Figure 1, collapsible polytetrafluoroethylene (PTFE) composite microporous filter film filter core of the present utility model, by filtering medium layer, interior support tube 8 and outer support tube 9 constitute, described filtering medium layer is folded into the fin back wall on the excircle of described interior support tube 8, support tube 8 was axial in the fold line of filtering medium layer was parallel to, described outer support tube 9 is set in the outside of the cylinder that filtering medium layer surrounds, wherein, described filtering medium layer is by a core filter course 5, a pre-filtering layer and the superimposed formation of supporting layer, described pre-filtering layer is arranged on the upstream side of described core filter course 5, described supporting layer is arranged on the downstream of core filter course 5, core filter course 5 is made of one deck polytetrafluoroethylcomposite composite film, the pre-filtering layer is overlapped by one deck terylene non-woven fabric 3 and one deck terylene non-woven fabric 4, supporting layer is overlapped by one deck terylene non-woven fabric 6 and one deck polypropylene mesh works 7, terylene non-woven fabric 6 in the supporting layer is adjacent with the downstream face of polytetrafluoroethylcomposite composite film, two adjacent fins all are welded to connect arbitrarily, the upper end of support tube 8 and outer support tube 9 is welded with a upper end cover 2 in described, the lower end of interior support tube 8 and outer support tube 9 is welded with a bottom end cover 10, be welded with an orientation triangle fin 1 on the described upper end cover 2, the downside of described bottom end cover 10 is welded with an interface pipe fitting 11.
Further, the excircle of described interface pipe fitting 11 is provided with the O RunddichtringO.
Further, the quality of the terylene non-woven fabric 3 of every square metre of area, terylene non-woven fabric 4 or terylene non-woven fabric 6 is 30 grams.
The course of work of present embodiment is: polytetrafluoroethylcomposite composite film is as filter membrane, the terylene non-woven fabric 6 in the terylene non-woven fabric 3 of its upstream side, terylene non-woven fabric 4 and downstream and polypropylene mesh works 7 have guaranteed the mechanical strength of filter core, increased the appearance dirt pollutant holding capability of filter core, low gram degree terylene non-woven fabric and polypropylene mesh works 7 have been optimized the fluid course of filter core, increase air flux, fluid resistance is little.
Claims (3)
1. collapsible polytetrafluoroethylene (PTFE) composite microporous filter film filter core, by filtering medium layer, interior support tube and outer support tube constitute, described filtering medium layer is folded into the fin back wall on the excircle of described interior support tube, support tube was axial in the fold line of filtering medium layer was parallel to, described outer support tube is set in the outside of the cylinder that filtering medium layer surrounds, it is characterized in that: described filtering medium layer is by a core filter course, a pre-filtering layer and the superimposed formation of supporting layer, described pre-filtering layer is arranged on the upstream side of described core filter course, described supporting layer is arranged on the downstream of core filter course, the core filter course is made of one deck polytetrafluoroethylcomposite composite film, the pre-filtering layer is overlapped by two-layer terylene non-woven fabric, supporting layer is overlapped by one deck terylene non-woven fabric and one deck polypropylene mesh works, the downstream face of terylene non-woven fabric in the supporting layer and polytetrafluoroethylcomposite composite film is adjacent, two adjacent fins all are welded to connect arbitrarily, the upper end of support tube and outer support tube is welded with a upper end cover in described, the lower end of interior support tube and outer support tube is welded with a bottom end cover, be welded with an orientation triangle fin on the described upper end cover, the downside of described bottom end cover is welded with an interface pipe fitting.
2. collapsible polytetrafluoroethylene (PTFE) composite microporous filter film filter core as claimed in claim 1, it is characterized in that: the excircle of described interface pipe fitting is provided with the O RunddichtringO.
3. collapsible polytetrafluoroethylene (PTFE) composite microporous filter film filter core as claimed in claim 1 is characterized in that: the quality of the described terylene non-woven fabric of every square metre of area is 30 grams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200751310U CN201436058U (en) | 2009-07-23 | 2009-07-23 | Folded type polytetrafluoroethylene composite porous filtering membrane filter core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200751310U CN201436058U (en) | 2009-07-23 | 2009-07-23 | Folded type polytetrafluoroethylene composite porous filtering membrane filter core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201436058U true CN201436058U (en) | 2010-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200751310U Expired - Lifetime CN201436058U (en) | 2009-07-23 | 2009-07-23 | Folded type polytetrafluoroethylene composite porous filtering membrane filter core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201436058U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105126410A (en) * | 2015-07-31 | 2015-12-09 | 广东正业科技股份有限公司 | Filter core assembly for liquid treatment |
| CN112121534A (en) * | 2020-08-31 | 2020-12-25 | 江苏申达净化设备有限公司 | Filter material and air filter |
-
2009
- 2009-07-23 CN CN2009200751310U patent/CN201436058U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105126410A (en) * | 2015-07-31 | 2015-12-09 | 广东正业科技股份有限公司 | Filter core assembly for liquid treatment |
| CN112121534A (en) * | 2020-08-31 | 2020-12-25 | 江苏申达净化设备有限公司 | Filter material and air filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100407 |
|
| CX01 | Expiry of patent term |