CN113304527A - High-flow renewable strong acid and strong base resistant filter element - Google Patents
High-flow renewable strong acid and strong base resistant filter element Download PDFInfo
- Publication number
- CN113304527A CN113304527A CN202110762130.9A CN202110762130A CN113304527A CN 113304527 A CN113304527 A CN 113304527A CN 202110762130 A CN202110762130 A CN 202110762130A CN 113304527 A CN113304527 A CN 113304527A
- Authority
- CN
- China
- Prior art keywords
- filter element
- strong
- strong acid
- end cap
- base resistant
- 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.)
- Pending
Links
- 239000002253 acid Substances 0.000 title claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 34
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 17
- 239000011737 fluorine Substances 0.000 claims abstract description 17
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000001125 extrusion Methods 0.000 claims abstract description 8
- 125000001153 fluoro group Chemical group F* 0.000 claims abstract description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 22
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 22
- 230000004907 flux Effects 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 3
- 239000012943 hotmelt Substances 0.000 claims description 2
- 239000002759 woven fabric Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 14
- 239000003513 alkali Substances 0.000 abstract description 13
- 238000011001 backwashing Methods 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 description 10
- 239000002585 base Substances 0.000 description 5
- 239000012065 filter cake Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter 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
- B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
- B01D29/606—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by pressure measuring
-
- 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
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a high-flow renewable strong acid and strong alkali resistant filter element which comprises an upper end cover, a lower end cover, an inner framework, an outer framework sleeved outside the inner framework, and a filter material positioned between the inner framework and the outer framework; the filter material comprises a fluorine-containing material extrusion net and a fluorine-containing material filter layer attached to the fluorine-containing material extrusion net. The high-flow renewable strong acid and strong alkali resistant filter element provided by the invention has the characteristics of high flow, backwashing and long service life, and has strong acid and strong alkali resistant performance, so that the strong corrosive liquid can be filtered, the application field of the filter element is widened, and the market demand is met.
Description
Technical Field
The invention relates to the technical field of filter elements, in particular to a high-flow renewable strong acid and strong alkali resistant filter element.
Background
With the rapid development and application of advanced technologies, more and more corrosive liquids need to be filtered, especially in microelectronics, semiconductors, chemical industry and other industries. While meeting the performance requirements, lean production needs to be realized, and the replacement frequency of the traditional filter element is reduced. At present, the filter element suitable for liquid filtration has a plurality of types, but the market approaches to the blank for the filtration of large-flow, back-washable and corrosion-resistant liquid.
Disclosure of Invention
The invention aims to disclose a high-flow renewable strong acid and strong alkali resistant filter element which has the characteristics of high flow, backwashing and long service life, has strong acid and strong alkali resistant performance, can meet the filtration of strong corrosive liquid, broadens the application field of the filter element and meets the market demand.
In order to achieve the purpose, the invention provides a high-flow renewable strong acid and strong base resistant filter element which comprises an upper end cover, a lower end cover, an inner framework, an outer framework sleeved outside the inner framework, and a filter material positioned between the inner framework and the outer framework; the filter material comprises a fluorine-containing material extrusion net and a fluorine-containing material filter layer attached to the fluorine-containing material extrusion net.
In some embodiments, the extruded netting of fluoropolymer material is a PFA extruded netting or a FEP extruded netting or a PTFE extruded netting.
In some embodiments, the filtration layer of a fluorine-containing material is a PTFE woven fabric or a PTFE membrane.
In some embodiments, the filter is a corrugated filter having a height of 8mm to 15 mm.
In some embodiments, the filter is hot-melt welded between the inner frame and the outer frame.
In some embodiments, the upper end cap is fitted with an O-ring.
In some embodiments, the upper end cap is a PFA upper end cap or a FEP upper end cap or a PTFE upper end cap.
In some embodiments, the lower end cap is a PFA lower end cap or a FEP lower end cap or a PTFE lower end cap.
In some embodiments, the exoskeleton is a PFA exoskeleton or an FEP exoskeleton or a PTFE exoskeleton.
In some embodiments, the endoskeleton is a PFA endoskeleton or an FEP endoskeleton or a PTFE endoskeleton.
Compared with the prior art, the invention has the beneficial effects that: the high-flow renewable strong acid and strong alkali resistant filter element provided by the invention has the characteristics of high flow, backwashing and long service life, and has strong acid and strong alkali resistant performance, so that the strong corrosive liquid can be filtered, the application field of the filter element is widened, and the market demand is met.
Drawings
FIG. 1 is a schematic structural diagram of a high flow rate regenerable strong acid and strong base resistant filter element according to the present invention;
fig. 2 is a cross-sectional view taken along line BB in fig. 1.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that functional, methodological, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
As shown in fig. 1 and 2, the high-flow renewable strong acid and strong base resistant filter element comprises an upper end cover 1, a lower end cover 2, an inner frame 3, an outer frame 4 sleeved outside the inner frame 3, and a filter material 5 located between the inner frame 3 and the outer frame 4.
The two ends of the inner framework 3 are respectively connected with the upper end cover 1 and the lower end cover 2, and the two ends of the outer framework 4 are respectively connected with the upper end cover 1 and the lower end cover 2. And the upper end cover 1 is provided with an O-shaped ring 6 which is convenient for being connected with the filter in a sealing way.
The filter material 5 comprises a fluorine-containing material extrusion net and a fluorine-containing material filter layer adhered to the fluorine-containing material extrusion net, has strong acid and alkali resistance, and can meet the requirement of filtering strong corrosive liquid. The fluorine-containing material extruded net is a PFA extruded net or an FEP extruded net or a PTFE extruded net, and is preferably a PFA extruded net. The fluorine-containing material filter layer is PTFE woven cloth or a PTFE membrane, and preferably PTFE woven cloth.
The filter material 5 is a folded wave filter material, so that the filtering area is increased. The height of the folded wave filter material is 10mm, and the filter cake is favorably blown back and falls off. The filter material 5 is welded between the inner framework 3 and the outer framework 4 in a hot melting mode, and the filter material 5 is protected.
The upper end cover 1 is a PFA upper end cover or an FEP upper end cover or a PTFE upper end cover, is preferably a PFA upper end cover, has strong acid and alkali resistance, and can meet the requirement of filtering strong corrosive liquid. The lower end cover 2 is a PFA lower end cover or an FEP lower end cover or a PTFE lower end cover, is preferably a PFA lower end cover, has strong acid and alkali resistance, and can meet the requirement of filtering strong corrosive liquid. The outer skeleton 4 is a PFA outer skeleton or an FEP outer skeleton or a PTFE outer skeleton, is preferably a PFA outer skeleton, has strong acid and alkali resistance, and can meet the requirement of filtering strong corrosive liquid. The inner skeleton 3 is a PFA inner skeleton or an FEP inner skeleton or a PTFE inner skeleton, is preferably a PFA inner skeleton, has strong acid and alkali resistance, and can meet the requirement of filtering strong corrosive liquid.
The use principle of the high-flow renewable strong acid and strong base resistant filter element is as follows: the strong corrosive liquid penetrates through the filter material 5 from the outer side of the outer framework 4, enters the inner framework 3 and then flows out through the upper end cover 1. Solid particles in the strong corrosive liquid are intercepted on the surface of the filter material 5, a thicker filter cake is gradually formed, and the pressure difference rises. When a certain pressure difference is reached, compressed air is used for back flushing, and then filtered liquid is used for back flushing, so that a filter cake falls off, and the flux of the filter material 5 is recovered.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A high-flow renewable strong acid and strong base resistant filter element is characterized by comprising an upper end cover, a lower end cover, an inner framework, an outer framework sleeved outside the inner framework, and a filter material positioned between the inner framework and the outer framework; the filter material comprises a fluorine-containing material extrusion net and a fluorine-containing material filter layer attached to the fluorine-containing material extrusion net.
2. The high flux regenerable strong acid and strong base resistant filter element of claim 1, wherein said fluorine-containing material extruded mesh is a PFA extruded mesh or a FEP extruded mesh or a PTFE extruded mesh.
3. The high flow rate regenerable strong acid and strong base resistant filter element of claim 2, wherein the fluorine-containing material filter layer is a PTFE woven fabric or a PTFE membrane.
4. The high flow rate renewable strong acid and base resistant filter element according to claim 1, wherein the filter is a corrugated filter having a height of 8mm to 15 mm.
5. The high flow rate renewable strong acid and base resistant filter element of claim 4 wherein said filter is hot melt welded between an inner frame and an outer frame.
6. The high flow regenerable strong acid and strong base resistant filter element of claim 1, wherein said upper end cap is fitted with an O-ring.
7. The high flow rate regenerable strong acid and strong base resistant filter element of claim 1, wherein the upper end cap is a PFA upper end cap or a FEP upper end cap or a PTFE upper end cap.
8. The high flow rate regenerable strong acid and strong base resistant filter element of claim 1, wherein the lower end cap is a PFA lower end cap or a FEP lower end cap or a PTFE lower end cap.
9. The high flux regenerable strong acid and strong base resistant filter element of claim 1, wherein the exoskeleton is a PFA exoskeleton or an FEP exoskeleton or a PTFE exoskeleton.
10. The high flux regenerable strong acid and strong base resistant filter element of claim 1, wherein said inner frame is a PFA inner frame or an FEP inner frame or a PTFE inner frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110762130.9A CN113304527A (en) | 2021-07-06 | 2021-07-06 | High-flow renewable strong acid and strong base resistant filter element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110762130.9A CN113304527A (en) | 2021-07-06 | 2021-07-06 | High-flow renewable strong acid and strong base resistant filter element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113304527A true CN113304527A (en) | 2021-08-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110762130.9A Pending CN113304527A (en) | 2021-07-06 | 2021-07-06 | High-flow renewable strong acid and strong base resistant filter element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113304527A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208340232U (en) * | 2018-02-15 | 2019-01-08 | 上海晶福机电科技有限公司 | A kind of resistance to acid/base filter core |
| CN208356241U (en) * | 2018-05-11 | 2019-01-11 | 上海上阳流体科技有限公司 | A kind of PVDF perfluor skeleton |
| CN109289383A (en) * | 2018-07-25 | 2019-02-01 | 上海闰铭精密技术有限公司 | A kind of folding membrane filter backwashed |
| CN215462392U (en) * | 2021-07-06 | 2022-01-11 | 飞潮(上海)环境技术有限公司 | High-flow renewable strong acid and strong base resistant filter element |
-
2021
- 2021-07-06 CN CN202110762130.9A patent/CN113304527A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208340232U (en) * | 2018-02-15 | 2019-01-08 | 上海晶福机电科技有限公司 | A kind of resistance to acid/base filter core |
| CN208356241U (en) * | 2018-05-11 | 2019-01-11 | 上海上阳流体科技有限公司 | A kind of PVDF perfluor skeleton |
| CN109289383A (en) * | 2018-07-25 | 2019-02-01 | 上海闰铭精密技术有限公司 | A kind of folding membrane filter backwashed |
| CN215462392U (en) * | 2021-07-06 | 2022-01-11 | 飞潮(上海)环境技术有限公司 | High-flow renewable strong acid and strong base resistant filter element |
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