CN101961570A - Folding type filter cartridge of polytetrafluoroethylene composite microfiltration membrane - Google Patents
Folding type filter cartridge of polytetrafluoroethylene composite microfiltration membrane Download PDFInfo
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- CN101961570A CN101961570A CN2009100552468A CN200910055246A CN101961570A CN 101961570 A CN101961570 A CN 101961570A CN 2009100552468 A CN2009100552468 A CN 2009100552468A CN 200910055246 A CN200910055246 A CN 200910055246A CN 101961570 A CN101961570 A CN 101961570A
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- support tube
- welded
- end cover
- polytetrafluoroethylene composite
- medium layer
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Abstract
The invention relates to a folding type filter cartridge of a polytetrafluoroethylene composite microfiltration membrane, which comprises a filter dielectric layer, an internal support column and an external support column, wherein the filter dielectric layer comprises a layer of polytetrafluoroethylene composite membrane, a layer of plain weave, a layer of dacron non-woven cloth and a layer of polypropylene net-shaped structure; the plain weave is arranged on the upstream side of the polytetrafluoroethylene composite membrane; the dacron non-woven cloth is arranged on the downstream side of the polytetrafluoroethylene composite membrane; the polypropylene net-shaped structure is arranged on the downstream side of the dacron non-woven cloth; any two adjacent fins are connected in a welding mode; the upper ends of the internal support column and the external support column are welded with an upper end cover, and the lower ends are welded with a lower end cover; a positioning triangle fin is welded on the upper end cover, and an interface pipe fitting is welded on the lower side of the lower end cover; the polytetrafluoroethylene composite membrane is taken as a filter membrane; the plain weave on the upstream side and the polypropylene net-shaped structure on the downstream side of the polytetrafluoroethylene composite membrane have the action of support and protection; and the hydraulic resistance of the polytetrafluoroethylene composite membrane is less.
Description
Technical field:
The present invention relates to air purifying process, relate in particular to the device that in air, removes bacterium, removes 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.But; in existing filter cartridge construction; the film both sides are that the upstream and downstream side of membrane filtration respectively uses one deck nonwoven fabric of long fibers as protective layer; often cause polytetrafluoroethylcomposite composite film in folding process, to be damaged; and protective layer increases fluid resistance; make that filter core resistance just is big, the pressure height, concrete manifestation is that outflow is little.
Summary of the invention:
The object of the present invention is to provide a kind of polytetrafluoroethylene (PTFE) composite microporous filter film folding type filter element, described this polytetrafluoroethylene (PTFE) composite microporous filter film folding type filter element will solve fluid resistance and the filter core technical problem that just resistance is big, pressure is high, flow is little that collapsible membrane type filter core exists in the prior art.
This polytetrafluoroethylene (PTFE) composite microporous filter film folding type filter element of the present invention 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 one deck polytetrafluoroethylcomposite composite film, one deck plain weave net and two superimposed formations of supporting layer, described two supporting layers are made of one deck terylene non-woven fabric and one deck polypropylene mesh works respectively, described plain weave net is arranged on the upstream side of described polytetrafluoroethylcomposite composite film, described terylene non-woven fabric is arranged on the downstream of polytetrafluoroethylcomposite composite film and adjacent with the face of polytetrafluoroethylcomposite composite film, described polypropylene mesh works is arranged on the downstream of terylene non-woven fabric, 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.
Concrete, the welding described in the present invention can be adopted ultrasonic wave of the prior art or sweat soldering technology.
Operation principle of the present invention is: polytetrafluoroethylcomposite composite film is as filter membrane, and the plain weave net of its upstream side and the polypropylene mesh works in downstream can play a supporting role in protection, and fluid resistance is little simultaneously.
The present invention and prior art compare, and its effect is actively with tangible.The present invention is provided with the plain weave net at the upstream side at polytetrafluoroethylcomposite composite film, the downstream is provided with the polypropylene mesh works, can play a supporting role in protection, and fluid resistance is little simultaneously.
Description of drawings:
Fig. 1 is the structural representation of a kind of polytetrafluoroethylene (PTFE) composite microporous filter film folding type filter element of the present invention.
The specific embodiment:
Embodiment 1:
As shown in Figure 1, a kind of polytetrafluoroethylene (PTFE) composite microporous filter film folding type filter element of the present invention, by filtering medium layer, interior support tube 7 and outer support tube 8 constitute, described filtering medium layer is folded into the fin back wall on the excircle of described interior support tube 7, support tube 7 was axial in the fold line of filtering medium layer was parallel to, described outer support tube 8 is set in the outside of the cylinder that filtering medium layer surrounds, wherein, described filtering medium layer is by one deck polytetrafluoroethylcomposite composite film 4, one deck plain weave net 3 and two superimposed formations of supporting layer, described two supporting layers are made of one deck terylene non-woven fabric 5 and one deck polypropylene mesh works 6 respectively, described plain weave net 3 is arranged on the upstream side of described polytetrafluoroethylcomposite composite film 4, described terylene non-woven fabric 5 is arranged on the downstream of polytetrafluoroethylcomposite composite film 4 and adjacent with the face of polytetrafluoroethylcomposite composite film 4, described polypropylene mesh works 6 is arranged on the downstream of terylene non-woven fabric 5, two adjacent fins all are welded to connect arbitrarily, the upper end of support tube 7 and outer support tube 8 is welded with a upper end cover 2 in described, the lower end of interior support tube 7 and outer support tube 8 is welded with a bottom end cover 9, be welded with an orientation triangle fin on the described upper end cover 2, the downside of described bottom end cover 9 is welded with an interface pipe fitting 10.
Further, the excircle of described interface pipe fitting 10 is provided with the O RunddichtringO.
Claims (2)
1. polytetrafluoroethylene (PTFE) composite microporous filter film folding type filter element, 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 one deck polytetrafluoroethylcomposite composite film, one deck plain weave net and two superimposed formations of supporting layer, described two supporting layers are made of one deck terylene non-woven fabric and one deck polypropylene mesh works respectively, described plain weave net is arranged on the upstream side of described polytetrafluoroethylcomposite composite film, described terylene non-woven fabric is arranged on the downstream of polytetrafluoroethylcomposite composite film and adjacent with the face of polytetrafluoroethylcomposite composite film, described polypropylene mesh works is arranged on the downstream of terylene non-woven fabric, 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. polytetrafluoroethylene (PTFE) composite microporous filter film folding type filter element as claimed in claim 1, it is characterized in that: the excircle of described interface pipe fitting is provided with the O RunddichtringO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100552468A CN101961570A (en) | 2009-07-23 | 2009-07-23 | Folding type filter cartridge of polytetrafluoroethylene composite microfiltration membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100552468A CN101961570A (en) | 2009-07-23 | 2009-07-23 | Folding type filter cartridge of polytetrafluoroethylene composite microfiltration membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101961570A true CN101961570A (en) | 2011-02-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100552468A Pending CN101961570A (en) | 2009-07-23 | 2009-07-23 | Folding type filter cartridge of polytetrafluoroethylene composite microfiltration membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101961570A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106334366A (en) * | 2016-11-16 | 2017-01-18 | 上海闰铭精密技术有限公司 | High performance filter cartridge with glass fiber coil |
| CN108654167A (en) * | 2018-06-22 | 2018-10-16 | 南通佳达石油化工设备有限公司 | Collapsible Nomex filter core |
| CN110935274A (en) * | 2019-09-18 | 2020-03-31 | 赵兰坤 | Air filtering device for reducing bacterial contamination of amino acid fermentation |
| CN112274999A (en) * | 2019-07-27 | 2021-01-29 | 杭州科百特过滤器材有限公司 | Folding filter element |
-
2009
- 2009-07-23 CN CN2009100552468A patent/CN101961570A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106334366A (en) * | 2016-11-16 | 2017-01-18 | 上海闰铭精密技术有限公司 | High performance filter cartridge with glass fiber coil |
| CN108654167A (en) * | 2018-06-22 | 2018-10-16 | 南通佳达石油化工设备有限公司 | Collapsible Nomex filter core |
| CN112274999A (en) * | 2019-07-27 | 2021-01-29 | 杭州科百特过滤器材有限公司 | Folding filter element |
| CN110935274A (en) * | 2019-09-18 | 2020-03-31 | 赵兰坤 | Air filtering device for reducing bacterial contamination of amino acid fermentation |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110202 |