CN208324436U - A kind of dedusting filtering bag and its composite filtering material - Google Patents
A kind of dedusting filtering bag and its composite filtering material Download PDFInfo
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- CN208324436U CN208324436U CN201820587909.5U CN201820587909U CN208324436U CN 208324436 U CN208324436 U CN 208324436U CN 201820587909 U CN201820587909 U CN 201820587909U CN 208324436 U CN208324436 U CN 208324436U
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- carpet veneer
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Abstract
The utility model discloses a kind of dedusting filtering bag and its composite filtering materials, the composite filtering material includes base fabric, the upper carpet veneer for being set to base fabric upper surface, the table carpet veneer for being set to carpet veneer upper surface and the lower carpet veneer for being set to base fabric lower surface, and table carpet veneer is metal flexible perforated membrane.Further, base fabric is metal grill cloth, and upper carpet veneer and lower carpet veneer are polyphenylene sulfide fibre and polytetrafluoroethylene fibre blended layer.Further, the vacuum diffusion welding of metal flexible perforated membrane is connected to carpet veneer, and upper carpet veneer and lower carpet veneer needle thorn are in base fabric.Composite filtering material provided by the utility model, comprising: strainability is good, running resistance is low, intensity is high, the service life is long, high temperature resistant, the beneficial effects such as corrosion-resistant.
Description
Technical field
The utility model relates to dedusting technology fields, more particularly to a kind of dedusting filtering bag and its composite filtering material.
Background technique
As environmental requirement is increasingly strict, more harsh discharge standard is also set for coal-fired power plant's flue dust, currently
Coal-fired power plant's dust emission standard is 10mg/Nm3.To adapt to this discharge standard, electric precipitation and filter bag are developed in industry
The mutually compound electric-bag complex dust collector of dedusting.The filter bag of electric-bag complex dust collector is made of composite filtering material, composite filtering material performance
Quality is directly related to the runnability and dust removing effects of electrostatic fabric filter entirety.
In the prior art, it will usually set polytetrafluoroethylene (PTFE) (PTFE) film layer for the most surface layer of composite filtering material, it is intended to mention
The strainability of high composite filtering material and the ability for improving composite filtering material resistance flue gas middle acid substance corrosion.
But found in practical application, polytetrafluoroethylene (PTFE) (PTFE) film layer is easy to breakage under the washing away of dust, once
Breakage, composite filtering material can not just realize fine filtering again, therefore, for whole angle, most will be set as polytetrafluoroethyl-ne in surface layer
Alkene (PTFE) film layer can not improve the strainability of composite filtering material.
Moreover, also found in practical application, when setting polytetrafluoroethylene (PTFE) (PTFE) film layer for the most surface layer of composite filtering material,
Bigger running resistance can be generated to the flue gas for flowing through composite filtering material, under the runnability for causing electric-bag complex dust collector entirety
Drop.
In view of this, develop a kind of composite filtering material, make it have preferable strainability and there is lower running resistance,
It is those skilled in the art's technical issues that need to address.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of composite filtering material, the composite filtering material includes base fabric, sets
It is placed in the upper carpet veneer of the base fabric upper surface, be set to the table carpet veneer of the upper carpet veneer upper surface and is set to the base fabric following table
The lower carpet veneer in face, the table carpet veneer are metal flexible perforated membrane.
The most surface layer of the composite filtering material is set as metal flexible porous membrane layer, compared in background technique by composite filtering material most
Surface layer is set as Teflon membranes, is had the following beneficial effects:
Cracky and filtering accuracy be not high for metal flexible porous membrane layer, thus enable composite filtering material keep for a long time compared with
Good strainability；
Running resistance is lower, is conducive to by the circulation of filtering fluid (such as flue gas)；
High temperature that is corrosion-resistant and being resistant to 450 DEG C or more, so as to be applied in corrosive hot environment.
Optionally, the metal flexible perforated membrane vacuum diffusion welding is connected to the upper carpet veneer.
Optionally, the average pore size of the metal flexible perforated membrane is 0.5-100 μm, porosity 30%-70%.
Optionally, the base fabric is metal grill cloth.
Optionally, the upper carpet veneer and the lower carpet veneer are polyphenylene sulfide fibre and polytetrafluoroethylene fibre blended layer.
Optionally, the fibre fineness of the polyphenylene sulfide fibre of the upper carpet veneer is less than the polyphenylene sulfide fibre of the lower carpet veneer
Fibre fineness, also, the fibre fineness of the polytetrafluoroethylene fibre of the upper carpet veneer be less than the lower carpet veneer polytetrafluoroethyl-ne
The fibre fineness of alkene fiber.
Optionally, the fibre fineness of the polyphenylene sulfide fibre of the upper carpet veneer is 1.5dtex, the polyphenylene sulfide of the lower carpet veneer
The fibre fineness of ether fiber is 2.2dtex.
Optionally, the fibre fineness of the polytetrafluoroethylene fibre of the upper carpet veneer is 2D-4D, the polytetrafluoro of the lower carpet veneer
The fibre fineness of vinyl fiber is 4D-8D.
Optionally, the upper carpet veneer and the equal needle thorn of the lower carpet veneer are in the base fabric.
The utility model also provides a kind of dedusting filtering bag, and the dedusting filtering bag is by composite filtering material system described in any of the above embodiments
At.
When dedusting, flue gas is followed by table carpet veneer, upper carpet veneer, base fabric, lower carpet veneer.
The beneficial effect of the dedusting filtering bag is consistent with the beneficial effect of above-mentioned composite filtering material, no longer repeats herein.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of specific embodiment of composite filtering material provided by the utility model.
The reference numerals are as follows in Fig. 1:
1 base fabric, carpet veneer on 2,3 lower carpet veneers, 4 table carpet veneers.
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, with reference to the accompanying drawing and specific implementation
The utility model is described in further detail for mode.
Firstly the need of explanation, upper surface described in context, lower surface be based on for visual angle in figure, only for
Convenient for statement, and it is not construed as the restriction to technical solution.
Referring to FIG. 1, Fig. 1 is a kind of schematic diagram of specific embodiment of composite filtering material provided by the utility model.
As shown in Figure 1, the composite filtering material includes base fabric 1, the upper carpet veneer 2 for being set to 1 upper surface of base fabric, is set to carpet veneer
The table carpet veneer 4 of 2 upper surfaces and the lower carpet veneer 3 for being set to 1 lower surface of base fabric.
The material of each layer is described in detail below.
Table carpet veneer 4:
Table carpet veneer 4 is metal flexible porous membrane layer.Specifically, metal flexible porous membrane layer is by with solid solution alloy, face
The metal simple-substance of heart cubic structure or the metal simple-substance of body-centered cubic structure are made of the metal polyporous material of matrix phase.Specifically
Being made of which kind of metal polyporous material can be determined according to practical application, moreover, the thickness of metal porous film layer can also
To be determined according to practical application, in a particular embodiment, metal porous film layer with a thickness of 0.25mm.
Preferably, the average pore size of metal flexible perforated membrane is 0.5~100 μm, and porosity is 30%~70%.
The most surface layer of the composite filtering material is set as metal flexible porous membrane layer, is set as compared to by the most surface layer of composite filtering material
For Teflon membranes, have the following beneficial effects:
Cracky and filtering accuracy be not high for metal flexible porous membrane layer, thus enable composite filtering material keep for a long time compared with
Good strainability；
Running resistance is lower, is conducive to by the circulation of filtering fluid (such as flue gas)；
High temperature that is corrosion-resistant and being resistant to 450 DEG C or more, so as to be applied in corrosive hot environment.
Base fabric 1:
Base fabric 1 is metal grill cloth.Specifically, metal grill cloth is by the wire collection of small diameter (such as 0.5mm)
Beam is drawn into the fiber filament of smaller diameter (such as 1-2 μm), then fiber filament edge is paved into netted formation through broadwise.
Metal grill cloth is set by base fabric 1, composite filtering material intensity with higher can be made, to have longer make
Use the service life.
Preferably, it in the forming process of metal grill cloth, is first plated before bundle drawing method wire in wire outer surface
One layer of nickel, then one layer of copper is plated, to improve the corrosion resistance of metal grill cloth.Also, the preferably corrosion resistant steel alloy of wire,
Such as 304,316L, 317L, 904L, 254SMO, 2205,2507 etc., specific metal grill cloth by which kind of material wire system
At can be determined according to practical application, moreover, the mesh-density of metal grill cloth can also determine according to practical application
It is fixed.
Upper carpet veneer 2, lower carpet veneer 3:
Upper carpet veneer 2 and lower carpet veneer 3 are polyphenylene sulfide fibre and polytetrafluoroethylene fibre blended layer.Due to polyphenylene sulfide fibre
Intensity with higher of dimension itself, polytetrafluoroethylene fibre itself have preferable corrosion resistance, have between the two in addition compared with
Good cohesive force makes carpet veneer 2, lower carpet veneer 3 both intensity with higher or have preferable corrosion resistance.
Preferably, the fibre fineness of the polyphenylene sulfide fibre of upper carpet veneer 2 is less than the fiber of the polyphenylene sulfide fibre of lower carpet veneer 3
Fineness, also, the fibre fineness of the polytetrafluoroethylene fibre of upper carpet veneer 2 is again smaller than the fibre of the polytetrafluoroethylene fibre of lower carpet veneer 3
Tie up fineness.
In a particular embodiment, the fibre fineness of the polyphenylene sulfide fibre of upper carpet veneer 2 is 1.5dtex, the polyphenyl of lower carpet veneer 3
The fibre fineness of sulfide fibers is 2.2dtex.The fibre fineness of the polytetrafluoroethylene fibre of upper carpet veneer 2 is 2D-4D, lower carpet veneer 3
Polytetrafluoroethylene fibre fibre fineness be 4D-8D.
Form carpet veneer 2 by thinner fiber blend, lower carpet veneer 3 is formed by thicker fiber blend, can
So that composite filtering material both filtering accuracy with higher, will not also generate biggish running resistance.
Specifically, the proportion of two kinds of fibers can be according to reality in upper carpet veneer 2 in the proportion of two kinds of fibers and lower carpet veneer 3
Border application determines.In a particular embodiment, the proportion of polyphenylene sulfide fibre and polytetrafluoroethylene fibre is 1 in upper carpet veneer 2:
1, the proportion of polyphenylene sulfide fibre and polytetrafluoroethylene fibre is 3:2 in lower carpet veneer 3.
Specifically, the thickness of the thickness of upper carpet veneer 2 and lower carpet veneer 3 can also be determined according to practical application.Specific
In embodiment, upper carpet veneer 2 with a thickness of 0.6mm, lower carpet veneer 3 with a thickness of 0.85mm.
The combination between each layer is described in detail below:
The combination of table carpet veneer 4 and upper carpet veneer 2:
4 vacuum diffusion welding of table carpet veneer is connected to carpet veneer 2.Specifically, vacuum diffusion bonding is in certain vacuum degree condition
Under, two smooth bright and clean face of weld are heated to certain temperature, in the case where any solder or intermetallic metal is not added,
Under being acted on while temperature and pressure, it is closely contacted with each other after microplasticity rheology occurs, utilizes the electricity of weldment contact surface
Son, atom or molecule diffuse into one another transfer, and form ionic bond, and metallic bond or covalent bond are kept the temperature for a period of time, make to weld
The ingredient in area is connect, microstructure homogenization reaches complete metallurgical joining process.That is, vacuum diffusion bonding mainly relies on
Face of weld is in close contact after microplasticity rheology occurs, and atom is made mutually largely to spread and realize welding.
In the prior art, 4 thermal-adhering of table carpet veneer or viscose are usually fitted in into upper carpet veneer 2, by filtering fluid
In particle (such as flue dust) souring under, table carpet veneer 4 is easy to remove carpet veneer 2, makes under composite filtering material strainability
Drop is entirely ineffective.In comparison, 4 vacuum diffusion welding of table carpet veneer is connected to upper carpet veneer 2, keeps combination between the two more reliable,
The upper carpet veneer 2 of the removing of table carpet veneer 4 can be evaded and cause the decline of composite filtering material strainability or entirely ineffective problem.
The combination of upper carpet veneer 2, lower carpet veneer 3 and base fabric 1:
Upper carpet veneer 2 and the equal needle of lower carpet veneer 3 thorn are in base fabric 1, and in other words, upper carpet veneer 2 and lower carpet veneer 3 pass through needling process
It tangles with base fabric 1.So that carpet veneer 2 and lower carpet veneer 3 is tangled by needling process and base fabric 1, bond strength can be enhanced, avoid
Carpet veneer 2, lower carpet veneer 3 and base fabric 1 are removed.
In conclusion the utility model be from existing various different sizes, unlike material material in have chosen rationally
Metal flexible perforated membrane, metal grill cloth, the polyphenylene sulfide fibre, polytetrafluoroethylene fibre of specification, and to the material selected
Reasonable combination has been carried out, has been ultimately formed with strainability is good, running resistance is low, intensity is high, the service life is long, high temperature resistant, resistance to
The composite filtering material of the beneficial effects such as corrosion.
In addition, the utility model also provides a kind of dedusting filtering bag, which is made of above-mentioned composite filtering material.Dedusting
When, flue gas is followed by table carpet veneer 4, upper carpet veneer 2, base fabric 1, lower carpet veneer 3.
The beneficial effect of the dedusting filtering bag is consistent with the beneficial effect of above-mentioned composite filtering material, no longer repeats herein.
Dedusting filtering bag provided by the utility model and its composite filtering material are described in detail above.It is used herein
Specific case is expounded the principles of the present invention and embodiment, and the explanation of above example is only intended to help
Understand the method and its core concept of the utility model.It should be pointed out that for those skilled in the art,
Under the premise of not departing from the utility model principle, several improvements and modifications can be made to this utility model, these improve and
Modification is also fallen into the protection scope of the utility model claims.
Claims (10)
1. a kind of composite filtering material, which is characterized in that the composite filtering material includes base fabric (1), is set to the base fabric (1) upper surface
Upper carpet veneer (2), be set to the table carpet veneer (4) of upper carpet veneer (2) upper surface and be set under the base fabric (1) lower surface
Carpet veneer (3), the table carpet veneer (4) are metal flexible perforated membrane.
2. composite filtering material according to claim 1, which is characterized in that the metal flexible perforated membrane vacuum diffusion welding is connected to
The upper carpet veneer (2).
3. composite filtering material according to claim 1, which is characterized in that the average pore size of the metal flexible perforated membrane is
0.5-100 μm, porosity 30%-70%.
4. composite filtering material according to claim 1-3, which is characterized in that the base fabric (1) is metal grill cloth.
5. composite filtering material according to claim 1-3, which is characterized in that the upper carpet veneer (2) and the lower felt
Layer (3) is polyphenylene sulfide fibre and polytetrafluoroethylene fibre blended layer.
6. composite filtering material according to claim 5, which is characterized in that the fibre of the polyphenylene sulfide fibre of the upper carpet veneer (2)
Tie up the fibre fineness that fineness is less than the polyphenylene sulfide fibre of the lower carpet veneer (3), also, the polytetrafluoroethyl-ne of the upper carpet veneer (2)
The fibre fineness of alkene fiber is less than the fibre fineness of the polytetrafluoroethylene fibre of the lower carpet veneer (3).
7. composite filtering material according to claim 6, which is characterized in that the fibre of the polyphenylene sulfide fibre of the upper carpet veneer (2)
Dimension fineness is 1.5dtex, and the fibre fineness of the polyphenylene sulfide fibre of the lower carpet veneer (3) is 2.2dtex.
8. composite filtering material according to claim 6, which is characterized in that the polytetrafluoroethylene fibre of the upper carpet veneer (2)
Fibre fineness is 2D-4D, and the fibre fineness of the polytetrafluoroethylene fibre of the lower carpet veneer (3) is 4D-8D.
9. composite filtering material according to claim 5, which is characterized in that the upper carpet veneer (2) and the lower carpet veneer (3) equal needle
It pierces in the base fabric (1).
10. a kind of dedusting filtering bag, which is characterized in that the dedusting filtering bag is by the described in any item composite filtering materials of claim 1-9
It is made.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820587909.5U CN208324436U (en) | 2018-04-23 | 2018-04-23 | A kind of dedusting filtering bag and its composite filtering material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820587909.5U CN208324436U (en) | 2018-04-23 | 2018-04-23 | A kind of dedusting filtering bag and its composite filtering material |
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| CN208324436U true CN208324436U (en) | 2019-01-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110280074A (en) * | 2019-07-16 | 2019-09-27 | 安徽中电环保材料股份有限公司 | A kind of smoke dust removing filtering bag and its production technology with metal protection filter screen |
-
2018
- 2018-04-23 CN CN201820587909.5U patent/CN208324436U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110280074A (en) * | 2019-07-16 | 2019-09-27 | 安徽中电环保材料股份有限公司 | A kind of smoke dust removing filtering bag and its production technology with metal protection filter screen |
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| TR01 | Transfer of patent right |
Effective date of registration: 20201016 Address after: No.2, huangbang village, Dongxiao Town, Xinluo District, Longyan City, Fujian Province Patentee after: Fujian Longjing environmental protection Intelligent Transportation Engineering Co.,Ltd. Address before: 364000 B Block, 4th Floor, 399 Back Road, Information Photoelectric Garden, Xiamen Torch High-tech Zone, Fujian Province Patentee before: XIAMEN LONGKING ENVIRONMENTAL PROTECTION Co.,Ltd. |