CN105344169B - Industrial filter - Google Patents
Industrial filter Download PDFInfo
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- CN105344169B CN105344169B CN201410411774.3A CN201410411774A CN105344169B CN 105344169 B CN105344169 B CN 105344169B CN 201410411774 A CN201410411774 A CN 201410411774A CN 105344169 B CN105344169 B CN 105344169B
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- 238000001914 filtration Methods 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims description 9
- 239000004745 nonwoven fabric Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 238000011045 prefiltration Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011859 microparticle Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
An industrial filter comprising: the first filter is provided with a first filter bag and a first support frame for supporting the first filter bag, and the first filter bag is provided with a first bag opening; the outer surface of the first filter bag is an air inlet surface of the first filter, the inner surface of the first filter bag is an air outlet surface of the first filter, and the first bag opening is an air outlet of the first filter. Under the condition that the sizes of the air vents are the same, the filtering area is increased, and the resistance to airflow is reduced; when the air current passes through first filter bag, flow from first sack behind the inner space of first filter bag, the air-out air current is more even, steady.
Description
Technical Field
The invention relates to a filter, in particular to an industrial filter.
Background
In industrial application, for plants or workshops with high requirements on air cleanliness, industrial filters with higher filtering effects are required. As shown in fig. 1, such an industrial filter generally includes a plate filter 1 and a bag filter 2 connected to each other, wherein the plate filter 1 is used as a pre-filter, the bag filter 2 is used as a fine filter, and an air flow enters in a wind direction W, passes through the plate filter 1 and the bag filter 2 in sequence, and enters a plant or a workshop.
However, the plate filter 1 as a pre-filter has a large resistance to the air flow, and as shown in fig. 2, after the air flow passes through the plate filter 1 in the wind direction W, the air flow is easily diffused all around, and it is difficult to maintain the air flow smoothly, and the turbulent flow is serious.
In some cases, the bag filter 2 is also used alone. It is to be noted that a conventional bag filter 2 comprises a frame, which is substantially rigid and is mechanically sealingly fixed to the filtering apparatus, and a plurality of filter pockets; the filter bag is made of relatively soft non-woven fabric, and the bag openings of the filter bag are arranged side by side and fixed on the frame. As is generally understood by those skilled in the art, the filter bags of bag filters made of relatively soft non-woven material are only filtered in such a way that the air flow enters from the bag opening and then flows out from the side walls and the bottom of the filter bag. Therefore, the traditional bag filter is always set to be in the direction that the bag opening of the filter bag faces the air inlet, air flow enters the filter bag of the bag filter along the wind direction W in the working state, the filter bag made of flexible non-woven fabric materials is expanded by the pressure of the air flow to enable the filtering effect of the filter bag to be more sufficient, and then the air flow flows out of the filter bag after being filtered by the filter bag to enter a factory building or a workshop and the like. At this time, the impurities such as dust, moisture and other pollutants in the air flow are filtered or adsorbed by the filter medium of the filter bag and are retained and accumulated in the filter bag. After a period of use, the filtering effect of the bag filter is reduced due to the accumulation of the impurities, thereby affecting the service life of the bag filter.
Two or more bag filters 2 may also be used in series when air cleanliness is a high requirement. As shown in fig. 3, two bag filters 2 are connected in series in a closed duct frame 3 to constitute a classification filter. In this case, the bag filter located upstream in the air intake direction generally has large pores and is suitable as a primary filter, while the bag filter 22 located downstream in the air intake direction generally has small pores and is suitable as a secondary filter (fine filter), in view of the classification filtering. At the moment, the airflow enters along the wind direction W and passes through the filter bag of the primary filter to complete primary filtration, and then further enters and passes through the filter bag of the secondary filter (fine filter) to enter a factory or workshop and the like. Such a staged filtering arrangement is easy to obtain a better filtering effect than the filter of fig. 1. However, due to the limitations of conventional bag filters, impurities such as dust, moisture and other contaminants in the air flow tend to accumulate within the filter bag, thereby reducing the filtering effectiveness of the filter and affecting the life of the filter. Further, due to the requirement of serial arrangement, the graded filtering device needs to be introduced into the pipeline frame 3, so that the whole device is large in size, needs a large installation space, and is inconvenient to install and use.
Disclosure of Invention
The invention solves the problems that: firstly, a plate filter serving as a pre-filter in the existing industrial filter has large resistance to airflow, and the airflow is easy to diffuse around after passing through the plate filter, so that the turbulent flow is serious; secondly, the filter bag of the bag filter is easy to accumulate impurities, has short service life, and has large volume when being used as a grading filter in series connection.
To solve the above problems, the present invention provides an industrial filter comprising: a first filter having a first filter bag and a first support frame for supporting the first filter bag, the first filter bag having a first pocket mouth;
the outer surface of the first filter bag is an air inlet surface of the first filter, the inner surface of the first filter bag is an air outlet surface of the first filter, and the first bag opening is an air outlet of the first filter.
Optionally, the first support frame is a framework frame-shaped structure and is located on the inner surface of the first filter bag.
Optionally, the first support frame and the first filter bag are formed independently, and the first filter bag is a non-woven fabric filter bag;
the first support frame is detachably arranged in the first filter bag and provides support for the first filter bag.
Optionally, the first filter bag is provided with a plurality of filter layers, and the density of the plurality of filter layers is from loose to dense in the direction from the outer surface to the inner surface of the first filter bag.
Optionally, the size of the first filter bag is gradually reduced along a direction away from the first bag opening.
Optionally, the first filter bags are arranged side by side, and a gap is formed between adjacent first filter bags and is in sealing connection with one side close to the first bag opening.
Optionally, the air purifier further comprises a second filter arranged at the downstream of the first filter along the air inlet direction;
the first filter is connected with the second filter in a sealing way, and the minimum density of the filtering layers in the second filter is not less than the maximum density of the filtering layers in the first filter.
Optionally, the second filter comprises a second filter bag having a second pocket opening facing the first pocket opening;
the second bag opening is an air inlet of a second filter, the inner surface of the second filter bag is an air inlet surface of the second filter, and the outer surface of the second filter bag is an air outlet surface of the second filter.
Optionally, the second filter further comprises a second support frame for supporting the second filter bag, and the second support frame is located on the inner surface of the second filter bag.
Optionally, the size of the second filter bag is gradually reduced along a direction away from the second bag opening.
Optionally, the second filter bag has a plurality of, and a plurality of second filter bags are arranged side by side, have the clearance between the adjacent second filter bag and be close to one side sealing connection of second sack.
Optionally, the second filter bag is provided with a plurality of filter layers, and the density of the plurality of filter layers is from loose to dense in the direction from the inner surface to the outer surface of the second filter bag.
Optionally, the filter further comprises a connecting frame, and the first filter and the second filter are hermetically connected through the connecting frame.
Optionally, the frame comprises a first frame sealingly connected to the first filter, and a second frame sealingly connected to the second filter;
the first frame surrounds the air outlet of the first filter, the second frame surrounds the air inlet of the second filter, and the first frame and the second frame are connected in a sealing mode.
Compared with the prior art, the technical scheme of the invention has the following advantages:
on one hand, the first filter is provided with a first filter bag, and under the condition that the sizes of the ventilation openings are the same, the filtering area of the first filter bag is far larger than that of the plate-type filter, so that the resistance formed on the airflow is greatly reduced; meanwhile, when the air flow passes through the first filter bag, the air flow flows out of the first bag opening after passing through the inner space of the first filter bag, and the outlet air flow is more uniform and stable;
on the other hand, the outer surface of the first filter bag is used as an air inlet surface, and the inner surface of the first filter bag is used as an air outlet surface, so that when the airflow passes through the first filter bag, large particles in the airflow are blocked on the outer surface and cannot enter the first filter bag, the first filter bag can be kept clean better, and the service life of the filter is prolonged.
Furthermore, when the first filter and the second filter are connected in series to be used as a grading filter, the bag openings in the first filter and the second filter are connected through the connecting frame, so that the size of the connecting frame is reduced, and the installation space is saved.
Drawings
FIG. 1 is a diagrammatic, schematic side view of a prior art industrial filter;
FIG. 2 is a schematic perspective view of the panel filter of FIG. 1 illustrating the direction of air flow before and after the panel filter;
FIG. 3 is a schematic side view of a prior art graded filter;
FIG. 4 is a schematic perspective view of a first filter of the industrial filter according to the first embodiment of the present invention;
fig. 5 is a schematic perspective view of a first support frame of a first filter of an industrial filter according to a first embodiment of the present invention;
FIG. 6 is a schematic side view of an industrial filter according to a first embodiment of the present invention, showing the airflow before and after passing through the first filter;
FIG. 7 is a schematic view showing the structure of a filter layer in a first filter bag of an industrial filter according to a first embodiment of the present invention;
FIG. 8 is a schematic perspective view of an industrial filter according to a second embodiment of the present invention;
fig. 9 is a schematic side view of an industrial filter according to a second embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Example one
An embodiment of the present invention provides an industrial filter, referring to fig. 4-5, including a first filter 100, where the first filter 100 is a bag filter, and includes a first support frame 110 (not shown in fig. 4, refer to fig. 5) and a first filter bag 120 disposed on the first support frame 110, the first support frame 110 is used for supporting the first filter bag 120, and the first filter bag 120 has a first opening 121.
Wherein the number of the first filter bags 120 can be set according to the size of the ventilation opening and the filtering requirement, fig. 4 exemplarily shows 5 first filter bags 120 arranged side by side, each first filter bag 120 has one first opening 121, and adjacent first filter bags 120 have a gap therebetween and are hermetically connected at a side close to the first opening 121. In other embodiments, the number of first filter bags may be other values.
Referring to fig. 5, the first support frame 110 is a skeleton-supported frame-shaped structure, and the first support frame 110 allows airflow to pass through and encloses a shape substantially matching the shape of the first filter bag 120, so as to support the first filter bag 120 and maintain the shape of the first filter bag 120, thereby preventing the first filter bag 120 from deforming under the action of the airflow.
The first filter bag 120 is made of a substantially flexible non-woven fabric material, i.e., the first filter bag 120 is a non-woven fabric filter bag. The first support frame 110 and the first filter bag 120 of the framework frame structure are formed independently, and the first support frame 110 is integrally and detachably disposed in the first filter bag 120 to provide support for the first filter bag 120, in particular to a one-way rigid mechanical support pointing to the outside of the first filter bag 120.
In this embodiment, the size of the first filter bag 120 is gradually reduced in a direction away from the first opening 121. Thus, the gap between two adjacent first filter bags 120 is large, and the effective filtering area is increased, so that the airflow can better pass through.
As long as the first filter bag 120 is supported and the first filter bag 120 is not deformed during use, any arrangement manner may be adopted between the first support frame 110 and the first filter bag 120, for example, the first filter bag 120 may be sleeved outside the first support frame 110, may be sleeved inside the first support frame 110, or may be provided with the first support frame 110 embedded inside the first filter bag 120. In this embodiment, the first support frame 110 is sleeved with the first filter bag 120, that is, the first support frame 110 is located on the inner surface of the first filter bag 120.
The outer surface 120a of the first filter bag 120 is an air inlet surface of the first filter 100, the inner surface 120b is an air outlet surface of the first filter 100, and the first opening 121 is an air outlet of the first filter 100. In use, airflow enters from the outer surface 120a of the first filter bag 120 in the wind direction W and exits from the inner surface 120b to the first opening 121. When the airflow passes through the first filter bag 120, large particulate matters in the airflow are blocked by the outer surface 120a and do not enter the first filter bag 120, the inner surface 120b can be kept clean better, and the particulate matters adhered to the outer surface 120a can be removed conveniently by beating, brushing and the like without disassembling the first filter bag 120, so that the first filter bag 120 can be kept clean better.
It can be seen that, under the condition that the size of the ventilation opening is the same, the filtering area of the first filter bag 120 is far larger than that of the traditional plate filter, and the resistance to the airflow is greatly reduced; meanwhile, when the air flow passes through the first filter bag 120, the air flow passes through the inner space of the first filter bag 120 and then flows out of the first opening 121, and the turbulent air flow can be reformed in the inner space of the first filter bag 120, so that the outlet air flow is more uniform and stable, as shown in fig. 6.
Further, referring to fig. 7, the first filter bag 120 has a plurality of filter layers 122, and the density of the plurality of filter layers 122 is from loose to dense in a direction from the outer surface 120a to the inner surface 120b of the first filter bag 120.
FIG. 7 exemplarily shows that the filter layer 122 is two layers, namely, a first filter layer 122a and a second filter layer 122b, wherein the first filter layer 122a is located on the outer surface 120a of the first filter bag 120, the second filter layer 122b is located on the inner surface 120b of the first filter bag 120, and the first filter layer 122a is a loose fiber layer for blocking large particles with larger particle size in the air flow, and small particles with smaller particle size in the air flow can pass through the gaps between the fibers; the second filter layer 122b is a dense fiber layer for blocking small particles. The airflow sequentially passes through the first filter layer 122a and the second filter layer 122b along the wind direction W and then flows to the wind outlet 121.
In other embodiments, the number of filter layers 122 may be more than two, with a progressively greater density along the airflow direction.
Example two
The difference between the present embodiment and the first embodiment is that, referring to fig. 8-9, the industrial filter of the present embodiment further includes a second filter 200 located downstream of the first filter 100 in the air intake direction, that is, the second filter 200 is located on the side of the first filter 100 having the first opening 121, and is hermetically connected to the first filter 100 by a connection frame 310. Specifically, the connection frame 310 includes a first frame 311 connected to one filter 100 and a second frame 312 connected to the second filter 200, the first frame 311 surrounding the outlet port of the first filter 100, and the second frame 312 surrounding the inlet port of the second filter 200. The first frame 311 and the second frame 312 are hermetically connected.
In this embodiment, the first frame 311 is connected to the second frame 312 by a fastener 320, and a sealing member 330 is disposed between the first frame 311 and the second frame 312 and between the connecting frame 310 and the fastener 320 for sealing a space at a corresponding position to ensure the sealing performance of the entire industrial filter.
In this embodiment, the first filter 100 is used as a pre-filter, and the second filter 200 is used as a fine filter. When the air flow passes through the first filter 100 and the second filter 200 in sequence along the wind direction W, when the air flow passes through the first filter 100, the first filter 100 can block large particles and small particles in sequence, when the air flow flows out from the first opening 121 of the first filter 100, the air flow may also contain some impurities such as micro particles with smaller particle sizes or moisture, and then the second filter 200 is used for filtering the micro particles and the moisture, so that the air entering a factory building or a workshop is cleaner.
The second filter 200 may be any type of filter, but the minimum density of the filtering layers in the second filter 200 should not be less than the maximum density of the filtering layers in the first filter 100, otherwise the fine filtering effect cannot be achieved. In this embodiment, the minimum density of the filtration layer 200 in the second filter 200 is greater than the density of the dense fibrous layer of the first filter 100. On the basis of satisfying the above condition, the second filter bag 220 may be provided with a plurality of filter layers, and the density of the plurality of filter layers is from loose to dense in a direction from the inner surface to the outer surface of the second filter bag 220.
In this embodiment, similar to the first filter 100, the second filter 200 is a bag filter, and the second filter 200 includes a second supporting frame 210 (shown in a dotted line in the second filter of fig. 8) and a second filter bag 220 disposed on the second supporting frame 210, and the second filter bag 220 has a second opening 221 facing the first opening 121. The second support frame 210 is used to support the second filter bag 220 and maintain the shape of the second filter bag 220. The second support frame 210 can allow airflow to pass through, and the shapes of the second support frame 210 and the second filter bag 220, and the positions and the connection relationships between the second support frame 210 and the second filter bag 220 are the same as those of the first filter 100.
In the second filter 200, the second opening 221 is an air inlet, the inner surface of the second filter bag 200 is an air inlet surface, and the outer surface is an air outlet surface.
When the air flow passes through the industrial filter in the wind direction W, the air flow passes through the outer surface 100a, the inner surface 100b, the first opening 121 of the first filter 100 to the second opening 221 of the second filter 200 in this order, and then passes through the inner surface and the outer surface of the second filter 200 in this order. Impurities in the airflow are blocked by the first filter 100 and the second filter 200 in sequence according to the particle size, so that an ideal filtering effect is achieved.
Like the first filter 100, the number of the second filter bags 220 may be set according to the size of the ventilation opening and the filtering requirement, for example, one or more may be provided. Referring to fig. 8, in the present embodiment, the number of the second filter bags 220 is set to be a plurality, the plurality of second filter bags 220 are arranged side by side, and a gap is formed between adjacent second filter bags 220 and the adjacent second filter bags are hermetically connected at a side close to the second opening 221. In addition, similar to the first filter 100, the second filter bag 220 may also be shaped such that: in a direction away from the second opening 221, the size of the second filter bag 220 is gradually reduced to increase the gap between adjacent filter bags and increase the effective filtering area.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. An industrial filter comprising: a first filter having a first filter bag and a first support frame for supporting the first filter bag, the first filter bag having a first pocket mouth;
the air filter is characterized in that the outer surface of the first filter bag is an air inlet surface of the first filter, the inner surface of the first filter bag is an air outlet surface of the first filter, and the opening of the first bag is an air outlet of the first filter;
the industrial filter also comprises a second filter arranged at the downstream of the first filter along the air inlet direction;
the first filter is connected with the second filter in a sealing way, and the minimum density of the filtering layers in the second filter is not less than the maximum density of the filtering layers in the first filter;
the second filter comprises a second filter bag having a second pocket opening facing the first pocket opening;
the second bag opening is an air inlet of a second filter, the inner surface of the second filter bag is an air inlet surface of the second filter, and the outer surface of the second filter bag is an air outlet surface of the second filter.
2. The industrial filter of claim 1, wherein the first support frame is a skeletal frame structure and is located on an interior surface of the first filter pocket.
3. The industrial filter of claim 2, wherein the first support frame and the first filter bag are each independently formed;
first filter bag is the non-woven fabrics filter bag, just first support frame detachably set up in the first filter bag, for first filter bag provides the support.
4. The industrial filter of claim 1, wherein the first filter bag has a plurality of filter layers whose density is from loose to dense in a direction from an outer surface to an inner surface of the first filter bag.
5. The industrial filter of claim 1, wherein the first filter pocket tapers in size in a direction away from the first pocket mouth.
6. The industrial filter of claim 1, wherein the first filter bags are arranged side by side, and adjacent first filter bags have gaps therebetween and are sealingly connected at a side adjacent to the first bag opening.
7. The industrial filter of claim 1, wherein the second filter further comprises a second support frame for supporting the second filter bag, the second support frame being located on an inner surface of the second filter bag.
8. The industrial filter of claim 1, wherein the second filter pocket tapers in size in a direction away from the second pocket mouth.
9. The industrial filter of claim 1, wherein the second filter bag has a plurality of second filter bags, the plurality of second filter bags are arranged side by side, and adjacent second filter bags have a gap therebetween and are hermetically connected at a side close to the second pocket opening.
10. The industrial filter as claimed in claim 1, wherein the second filter bag has a plurality of filter layers whose density is from loose to dense in a direction from an inner surface to an outer surface of the second filter bag.
11. The industrial filter of claim 1, further comprising a connection frame, wherein the first filter is sealingly connected to the second filter by the connection frame.
12. The industrial filter of claim 11, wherein the frame comprises a first frame sealingly connected to the first filter, and a second frame sealingly connected to the second filter;
the first frame surrounds the air outlet of the first filter, the second frame surrounds the air inlet of the second filter, and the first frame and the second frame are connected in a sealing mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410411774.3A CN105344169B (en) | 2014-08-20 | 2014-08-20 | Industrial filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410411774.3A CN105344169B (en) | 2014-08-20 | 2014-08-20 | Industrial filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105344169A CN105344169A (en) | 2016-02-24 |
| CN105344169B true CN105344169B (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410411774.3A Active CN105344169B (en) | 2014-08-20 | 2014-08-20 | Industrial filter |
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| CN (1) | CN105344169B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413522A (en) * | 2018-03-16 | 2018-08-17 | 阿尔西制冷工程技术（北京）有限公司 | Air-conditioner set |
| CN109908670A (en) * | 2019-04-19 | 2019-06-21 | 南京国源电气有限公司 | Filter combines mounting system and method |
| CN109939504A (en) * | 2019-04-19 | 2019-06-28 | 南京国源电气有限公司 | Double-filtration element combination installation support component method and system |
| CN110118109B (en) * | 2019-05-21 | 2025-05-09 | 南京国源电气有限公司 | Filter assembly installation system and method |
| CN113476971B (en) * | 2021-05-18 | 2023-05-23 | 江苏风行动力科技有限公司 | Bag-type air filter and mounting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7905974B2 (en) * | 2007-07-31 | 2011-03-15 | Aaf-Mcquay Inc. | Method of making a marine gas turbine filter |
| CN203379745U (en) * | 2013-07-10 | 2014-01-08 | 康斐尔过滤设备(昆山)有限公司 | Filter with supporting structure |
| CN204233901U (en) * | 2014-08-20 | 2015-04-01 | 科德宝·宝翎无纺布（苏州）有限公司 | Industrial filter |
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Effective date of registration: 20171129 Address after: 215011 Riverside Road, Suzhou New District, Jiangsu Province, No. 1588 Applicant after: Codbo Pauline nonwovens (Suzhou) Co., Ltd. Applicant after: FREUDENBERG VILENE FILTER (CHENGDU) CO., LTD. Address before: 215011 new Binhe Road, Suzhou City, Jiangsu Province, No. 1588 Applicant before: Codbo Pauline nonwovens (Suzhou) Co., Ltd. Applicant before: Changchun Freudenberg.Vilene Filter Co., Ltd. Applicant before: FREUDENBERG VILENE FILTER (CHENGDU) CO., LTD. |
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