CN111420511A - A filter equipment for filtering formaldehyde - Google Patents
A filter equipment for filtering formaldehyde Download PDFInfo
- Publication number
- CN111420511A CN111420511A CN202010362133.9A CN202010362133A CN111420511A CN 111420511 A CN111420511 A CN 111420511A CN 202010362133 A CN202010362133 A CN 202010362133A CN 111420511 A CN111420511 A CN 111420511A
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- China
- Prior art keywords
- filter layer
- filter
- folding
- filtering
- mounting frame
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- 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.)
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Links
- 238000001914 filtration Methods 0.000 title claims abstract description 39
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims description 60
- 238000009423 ventilation Methods 0.000 claims abstract description 32
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims abstract description 7
- 239000004743 Polypropylene Substances 0.000 claims description 9
- -1 polypropylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 230000035484 reaction time Effects 0.000 abstract description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 8
- 238000001035 drying Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a filtering device for filtering formaldehyde, which comprises: the filter comprises a first filter layer, a second filter layer, a third filter layer and a mounting frame; the mounting frame is provided with a mounting opening; the first filter layer, the second filter layer and the third filter layer are all of folding structures; the first filter layer, the second filter layer and the third filter layer are sequentially overlapped with one another and arranged at the mounting opening of the mounting frame; the first filter layer is fixedly mounted to the mounting frame; the second filter layer and the third filter layer are detachably connected to the mounting frame; a plurality of vent holes are formed at the folding part of the second filter layer. According to the filtering device for filtering formaldehyde, the vent hole for increasing ventilation volume is formed in the folding position of the second filtering layer, so that the problem of overlarge wind resistance caused by overlarge density of the multiple overlapped filtering layers at the folding position can be solved. The ventilation hole that the folding position formed makes the holistic area of second filter layer reduce, has played the effect of adjusting the filter layer flow, increase reaction time.
Description
Technical Field
The invention relates to a filtering device for filtering formaldehyde.
Background
The existing filtering structure for removing formaldehyde is generally formed by folding a plurality of layers of filtering nets, and connecting the layers in series and overlapping each other. After the multi-layer filter screens are folded and overlapped, the density of the folded parts and the density of the non-folded parts are obviously different. Specifically, the space density of the folding part is larger, so that the wind resistance of the folding part is large, and the airflow is not smoothly circulated at the folding part, so that the adverse consequences such as blockage are generated.
Disclosure of Invention
The invention provides a filtering device for filtering formaldehyde, which adopts the following technical scheme:
a filter apparatus for filtering formaldehyde, comprising: the filter comprises a first filter layer, a second filter layer, a third filter layer and a mounting frame;
the mounting frame is provided with a mounting opening;
the first filter layer, the second filter layer and the third filter layer are all of folding structures;
the first filter layer, the second filter layer and the third filter layer are sequentially overlapped with one another and arranged at the mounting opening of the mounting frame;
the first filter layer is fixedly mounted to the mounting frame;
the second filter layer and the third filter layer are detachably connected to the mounting frame;
a plurality of vent holes are formed at the folding part of the second filter layer.
Further, the second filter layer is integrally formed.
Further, the second filter layer comprises: a plurality of filter members and a plurality of connecting members for connecting the filter members;
the filtering pieces and the connecting pieces are rectangular;
the filtering pieces are arranged in parallel and at intervals and are connected into a whole through a plurality of connecting pieces;
the clearance of interval between two adjacent filter pieces forms the ventilation hole.
Further, the plurality of filter elements are arranged along the first direction;
the connecting pieces are arranged along the second direction;
the first direction is perpendicular to the second direction.
Further, the connecting piece is an adhesive tape;
the filter element is made of formaldehyde-removing melt-blown paper;
the first filter layer is made of PP (polypropylene) forming melt-blown paper;
the third filter layer is made of static standing-stage polar melt-blown paper.
Further, the first filter layer is made of PP (polypropylene) sizing melt-blown paper;
the second filter layer is made of formaldehyde-removing melt-blown paper;
the third filter layer is made of static standing-stage polar melt-blown paper.
Further, the value range of the ratio of the sum of the lengths of the plurality of vent holes in the folding direction of the second filter layer to the total length of the second filter layer in the folding direction is greater than or equal to 0.2 and less than or equal to 0.95.
Further, the folding angle of the second filter layer ranges from 5 ° or more to 80 ° or less;
the ratio of the sum of the lengths of the plurality of ventilation holes in the folding direction of the second filter layer to the total length of the second filter layer in the folding direction is set as the clearance;
the relationship between the clearance and the folding angle is as follows:
A＝1-0.01*θ，
wherein A is the clearance degree, and theta is the folding angle.
Further, the ratio of the sum of the areas of the plurality of vent holes to the total area of the second filter layer ranges from 0.05 or more to 0.2 or less.
Further, the folding angle of the second filter layer ranges from 5 ° or more to 80 ° or less;
the ratio of the sum of the areas of the plurality of ventilation holes to the total area of the second filter layer is set as ventilation degree;
the relationship between the ventilation degree and the folding angle is as follows:
B＝0.21-0.002*θ，
wherein, B is the ventilation degree, and theta is the folding angle.
The filter device for filtering formaldehyde has the advantages that the vent holes for increasing ventilation quantity are formed in the folding positions of the second filter layers, so that the problem of overlarge wind resistance caused by overlarge density of the multiple stacked filter layers at the folding positions can be solved, meanwhile, the vent holes formed in the folding positions enable the overall area of the second filter layers to be reduced, the material cost of the second filter layers is reduced, the flow of the filter layers is adjusted, and the reaction time is increased. Controlling the normal temperature catalytic oxidation reaction to fall in the high-efficiency interval.
The filter device for filtering formaldehyde has the advantages that the setting mode of the vent hole is further disclosed, and the relation between the folding angles of the vent hole and the second filter layer is limited, so that the design of the vent hole of the second filter layer is more reasonable, and the structure of the second filter layer is more stable.
Drawings
FIG. 1 is a schematic view of a first embodiment of a filter apparatus for filtering formaldehyde according to the present invention;
FIG. 2 is an enlarged view of a first embodiment of the filter device for filtering formaldehyde according to the present invention;
fig. 3 is a partial schematic view of a second filter layer of a second embodiment of the filter device for filtering formaldehyde according to the present invention.
The filter device 100 for filtering formaldehyde, the first filter layer 10, the second filter layer (20, 200), the vent 21, the third filter layer 30, the mounting frame 40, the mounting port 41, the filter 201, the connector 202, the vent 203.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
Fig. 1 is a filter device 100 for filtering formaldehyde, comprising: a first filter layer 10, a second filter layer 20, a third filter layer 30, and a mounting frame 40. The mounting frame 40 is used to mount the first filter layer 10, the second filter layer 20, the third filter layer 30, and the mounting frame 40 has a rectangular shape, and a mounting opening 41 is formed in the middle of the rectangular mounting frame 40. The first filter layer 10, the second filter layer 20 and the third filter layer 30 are all of a folded structure. The first filter layer 10, the second filter layer 20 and the third filter layer 30 are sequentially disposed in the mounting opening 41 of the mounting frame 40 to be overlapped with each other. Wherein the first filter layer 10 is fixedly mounted to the mounting frame 40. The second and third filter layers 20 and 30 are removably attached to the mounting frame 40. When the filter device needs to be cleaned, the second filter layer 20 and the third filter layer 30 are removed and then mounted to the mounting frame 40 after cleaning.
The second filter 20 is formed with a plurality of ventilation holes 21 at the folded portion. It can be understood that the filtering apparatus 100 for filtering formaldehyde is formed by stacking a plurality of folded filtering layers, and the density at the folded portion is relatively high, so that the wind resistance at the folded portion is too large, which causes the air flow to be obstructed, in the embodiment, the plurality of ventilation holes 21 are provided at the folded portion of the second filtering layer 20, which improves the ventilation efficiency at the folded portion and avoids the occurrence of blockage. Meanwhile, the vent holes 21 formed at the folded portions reduce the overall area of the second filter 20, and reduce the material cost of the second filter 20.
Wherein, the first filter layer 10 is made of PP shaped melt-blown paper. The second filter layer 20 is made of formaldehyde-removing meltblown paper, with emphasis on removing formaldehyde from the air. Specifically, in the invention, the formaldehyde-removing melt-blown paper is melt-blown paper containing manganese dioxide, and is formed by immersing the melt-blown paper in a manganese dioxide solution for a certain time and then drying. The third filter layer 30 is made of electrostatic electret polar meltblown paper.
In a preferred embodiment, the second filter layer 20 is integrally formed. The second filter 20 is formed by folding the whole filter paper, and the vent hole 21 is formed at the folded portion by cutting or the like.
In order to ensure that the ventilation holes 21 can satisfy the ventilation requirement, the value range of the ratio of the sum of the lengths of the plurality of ventilation holes 21 in the folding direction of the second filter layer 20 to the total length of the second filter layer 20 in the folding direction is greater than or equal to 0.2 and less than or equal to 0.95. The ratio of the sum of the lengths of the plurality of ventilation holes 21 in the folding direction of the second filter 20 to the total length of the second filter 20 in the folding direction is set as the degree of clearance, and the larger the degree of clearance, the better the ventilation effect of the second filter 20 at the folded portion.
It will be appreciated that the greater the angle of fold of the second filter layer 20, the greater the seal at the fold and the greater the wind resistance, the greater the degree of clearance of the vent 21 that needs to be provided. The folding angle of the second filter layer 20 is in the range of 5 ° or more and 80 ° or less, (PS, the final angle is selected to be 5 to 80, and 3 to 80 ° is not selected because the angle is 3 °, and the coefficient of the fitted formula is complicated), and the magnitude of the gap is set in inverse proportion to the value of the folding angle, specifically, the gap is 0.95 when the folding angle is 5 °, and the gap is 0.2 when the folding angle is 80 °. Fitting the relationship between the clearance and the folding angle according to the relationship:
A＝1-0.01*θ，(1)
wherein A is the clearance degree, and theta is the folding angle.
From another point of view, the ratio of the sum of the areas of the plurality of ventilation holes 21 to the total area of the second filter layer 20 ranges from 0.05 or more to 0.2 or less. The ratio of the sum of the areas of the plurality of ventilation holes 21 to the total area of the second filter 20 is set as the degree of ventilation. The greater the degree of clearance, the better the ventilation of the second filter layer 20 at the fold. The range of the folding angle of the second filter layer 20 is 5 ° or more and 80 ° or less, and the setting of the ventilation degree is inversely proportional to the value of the folding angle, specifically, when the folding angle is 5 °, the ventilation degree is 0.2, and when the folding angle is 80 °, the gap degree is 0.05. Fitting the relationship between ventilation degree and folding angle according to the relationship:
B＝0.21-0.002*θ，(2)
wherein, B is the ventilation degree, and theta is the folding angle.
In the above embodiment, the second filter layer 20 is an integrally formed single member. Fig. 3 shows a second embodiment of the second filter layer in this embodiment, namely a second filter layer 200. In this embodiment, the second filter layer 200 comprises: a plurality of filter members 201 and a plurality of connecting members 202 for connecting the filter members 201. Specifically, the filter member 201 and the connecting member 202 are rectangular. The filtering pieces 201 are arranged in parallel and at intervals and are connected into a whole through a plurality of connecting pieces 202. The gap spaced between the adjacent two filter members 201 forms a vent hole 203. Further, the plurality of filter members 201 are arranged in the first direction. The plurality of connectors 202 are arranged in the second direction. The first direction is perpendicular to the second direction. In this embodiment, the connector 202 is an adhesive tape. The filter element 201 is made of formaldehyde-removing melt-blown paper, specifically, the formaldehyde-removing melt-blown paper is melt-blown paper containing manganese dioxide, and is formed by immersing the melt-blown paper in a manganese dioxide solution for a certain time and then drying the melt-blown paper. The setting manner of the size of the vent hole 203 is the same as that of the previous embodiment, and is not described again.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (10)
1. A filter apparatus for filtering formaldehyde, comprising: the filter comprises a first filter layer, a second filter layer, a third filter layer and a mounting frame;
the mounting frame is provided with a mounting opening;
the first filter layer, the second filter layer and the third filter layer are all of folding structures;
the first filter layer, the second filter layer and the third filter layer are sequentially overlapped with one another and arranged at the mounting opening of the mounting frame;
it is characterized in that the preparation method is characterized in that,
the first filter layer is fixedly mounted to the mounting frame;
the second and third filter layers are removably attached to the mounting frame;
a plurality of vent holes are formed at the folding part of the second filter layer.
2. The filter device for filtering formaldehyde according to claim 1,
the second filter layer is integrally formed.
3. The filter device for filtering formaldehyde according to claim 1,
the second filter layer comprises: a plurality of filter elements and a plurality of connecting elements for connecting the filter elements;
the filter element and the connecting piece are rectangular;
the filter pieces are arranged in parallel at intervals and are connected into a whole through a plurality of connecting pieces;
the ventilation hole is formed by the gap between every two adjacent filter pieces.
4. The filter device for filtering formaldehyde according to claim 3,
the filter elements are arranged along a first direction;
the connecting pieces are arranged along a second direction;
the first direction is perpendicular to the second direction.
5. The filter device for filtering formaldehyde according to claim 4,
the connecting piece is an adhesive tape;
the filter element is made of formaldehyde-removing melt-blown paper;
the first filter layer is made of PP (polypropylene) forming melt-blown paper;
the third filter layer is made of static resident grade polarity melt-blown paper.
6. The filter device for filtering formaldehyde according to claim 1,
the first filter layer is made of PP (polypropylene) forming melt-blown paper;
the second filter layer is made of formaldehyde-removing melt-blown paper;
the third filter layer is made of static resident grade polarity melt-blown paper.
7. The filter device for filtering formaldehyde according to any one of claims 1 to 6,
the value range of the ratio of the sum of the lengths of the plurality of ventilation holes in the folding direction of the second filter layer to the total length of the second filter layer in the folding direction is greater than or equal to 0.2 and less than or equal to 0.95.
8. The filter device for filtering formaldehyde according to claim 7,
the folding angle of the second filter layer is more than or equal to 5 degrees and less than or equal to 80 degrees;
the ratio of the sum of the lengths of the plurality of vent holes in the folding direction of the second filter layer to the total length of the second filter layer in the folding direction is set as a clearance degree;
the relationship between the clearance and the folding angle is as follows:
A＝1-0.01*θ，
wherein A is the clearance degree and theta is the folding angle.
9. The filter device for filtering formaldehyde according to any one of claims 1 to 6,
the value range of the ratio of the sum of the areas of the plurality of ventilation holes to the total area of the second filter layer is greater than or equal to 0.05 and less than or equal to 0.2.
10. The filter device for filtering formaldehyde according to claim 9,
the folding angle of the second filter layer is more than or equal to 5 degrees and less than or equal to 80 degrees;
the ratio of the sum of the areas of the plurality of ventilation holes to the total area of the second filter layer is set as ventilation degree;
the relationship between the ventilation degree and the folding angle is as follows:
B＝0.21-0.002*θ，
wherein B is the ventilation degree and theta is the folding angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010362133.9A CN111420511A (en) | 2020-04-30 | 2020-04-30 | A filter equipment for filtering formaldehyde |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010362133.9A CN111420511A (en) | 2020-04-30 | 2020-04-30 | A filter equipment for filtering formaldehyde |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111420511A true CN111420511A (en) | 2020-07-17 |
Family
ID=71555009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010362133.9A Pending CN111420511A (en) | 2020-04-30 | 2020-04-30 | A filter equipment for filtering formaldehyde |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111420511A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03242248A (en) * | 1990-02-19 | 1991-10-29 | Matsushita Electric Ind Co Ltd | Air filter |
| US20130219844A1 (en) * | 2012-02-29 | 2013-08-29 | Challen Sullivan | Method of adhering a pleated filtration media and filter and media filter stack using same |
| KR20150021778A (en) * | 2013-08-21 | 2015-03-03 | 김동혁 | Paint Filter Assembly |
| CN207614573U (en) * | 2017-11-21 | 2018-07-17 | 饶未欣 | A kind of air purifier filter core |
| CN208372686U (en) * | 2018-04-28 | 2019-01-15 | 华东交通大学 | A kind of air-conditioning filter core |
| CN212396282U (en) * | 2020-04-30 | 2021-01-26 | 杭州老爸评测科技有限公司 | A filter equipment for filtering formaldehyde |
-
2020
- 2020-04-30 CN CN202010362133.9A patent/CN111420511A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03242248A (en) * | 1990-02-19 | 1991-10-29 | Matsushita Electric Ind Co Ltd | Air filter |
| US20130219844A1 (en) * | 2012-02-29 | 2013-08-29 | Challen Sullivan | Method of adhering a pleated filtration media and filter and media filter stack using same |
| KR20150021778A (en) * | 2013-08-21 | 2015-03-03 | 김동혁 | Paint Filter Assembly |
| CN207614573U (en) * | 2017-11-21 | 2018-07-17 | 饶未欣 | A kind of air purifier filter core |
| CN208372686U (en) * | 2018-04-28 | 2019-01-15 | 华东交通大学 | A kind of air-conditioning filter core |
| CN212396282U (en) * | 2020-04-30 | 2021-01-26 | 杭州老爸评测科技有限公司 | A filter equipment for filtering formaldehyde |
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Effective date of registration: 20201214 Address after: Room 1203-3, building 4, Chuangzhi Green Valley Development Center, 788 HONGPU Road, Jianggan District, Hangzhou City, Zhejiang Province Applicant after: HANGZHOU DADDYLAB TECHNOLOGY Co.,Ltd. Address before: Room 1201-2, building 4, Chuangzhi Green Valley Development Center, 788 HONGPU Road, Jianggan District, Hangzhou City, Zhejiang Province Applicant before: Hangzhou dad Standard Technology Group Co.,Ltd. |
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Address after: Room 1203-3, Building 4, Chuangzhi Green Valley Development Center, No. 788, Hongpu Road, Shangcheng District, Hangzhou City, Zhejiang Province, 310000 Applicant after: Hangzhou Dad Evaluation Technology Co.,Ltd. Address before: Room 1203-3, building 4, Chuangzhi Green Valley Development Center, 788 HONGPU Road, Jianggan District, Hangzhou City, Zhejiang Province Applicant before: HANGZHOU DADDYLAB TECHNOLOGY Co.,Ltd. |