CN114931820B - Natural gas filter element capable of preventing fold - Google Patents
Natural gas filter element capable of preventing fold Download PDFInfo
- Publication number
- CN114931820B CN114931820B CN202210608829.4A CN202210608829A CN114931820B CN 114931820 B CN114931820 B CN 114931820B CN 202210608829 A CN202210608829 A CN 202210608829A CN 114931820 B CN114931820 B CN 114931820B
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- Prior art keywords
- filter
- end cover
- saddle
- natural gas
- hole
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
- B01D46/525—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material which comprises flutes
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses an anti-fold natural gas filter element, which comprises a first round end cover, a second round end cover, a cylindrical inner framework and a filter cylinder, wherein the first round end cover is arranged on the inner framework: the circumference of the first round end cover is provided with a boss, the center of the first round end cover is provided with a through hole, the inner bottom surface of the first round end cover is provided with a hollow cylindrical filter core seat coaxial with the through hole, and the inner diameter of the filter core seat is the same as the diameter of the through hole; the shape of the second round end cover is identical to that of the first round end cover; two ends of the cylindrical inner framework are respectively sleeved outside the two filter element seats; the filter cylinder is sleeved outside the cylindrical inner framework, two ends of the filter cylinder are respectively abutted to the inner bottom surfaces of the two end covers and are respectively fixedly connected with the two bosses, the cross section of the filter cylinder is in a ring shape formed by alternately connecting a plurality of saddle shapes and inverted V shapes, and fold lines of the saddle shapes and the inverted V shapes are parallel to the axis of the cylindrical inner framework. The invention can prevent the filter element from being folded and enhance the filtering effect.
Description
Technical Field
The invention belongs to the technical field of natural gas filter elements, and particularly relates to an anti-folding natural gas filter element.
Background
The gas turbine equipment has high precision and requires the natural gas used to have higher cleanliness. However, natural gas is highly corrosive due to its high temperature and pressure. In the case of severe part, the core filter material of the filter element is required to be a metal net or a metal felt of not less than 06Cr19Ni10 stainless steel.
The structural form of the metal net or metal felt filter core mainly comprises a disc type filter screen structure, a cylindrical sintering net structure and a corrugated filter cylinder structure. The respective characteristics are as follows: the filter element with the disc filter screen structure is equivalent to a layer of filter screen paved in the section of the pipeline, is easy to process, but has limited filter area and needs frequent shutdown and replacement; the filter element with the cylindrical sintering net structure is used for sintering the filter screen in a cylindrical shape, so that the filtering area is increased, but enough size is required, otherwise, the pollution receiving amount is limited; the filter element with the corrugated filter cylinder structure increases the filtering area in a limited space, has higher dirt receiving capacity, but has the possibility of fold failure, and has higher requirements on the forming process. Therefore, there is an urgent need for an optimized structure that solves the problem of easy pleating of the metal filter screen and increases the filtering area in a limited space.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an anti-folding natural gas filter element, which mainly solves the problems that the existing natural gas filter element filter screen is easy to fold and the filter area is not large enough.
To achieve the above object, the present invention provides an anti-pleating natural gas filter cartridge comprising a first circular end cap, a second circular end cap, a cylindrical inner skeleton, and a filter cartridge:
a first boss is arranged on the circumference of the first round end cover, a first through hole is formed in the center of the first boss, a hollow cylindrical first filter core seat coaxial with the first through hole is arranged on the inner bottom surface of the first round end cover, and the inner diameter of the first filter core seat is the same as the diameter of the first through hole;
a second boss is arranged on the circumference of the second round end cover, a second through hole is formed in the center of the second boss, a hollow cylindrical second filter core seat coaxial with the second through hole is arranged on the inner bottom surface of the second round end cover, and the inner diameter of the second filter core seat is the same as the diameter of the second through hole;
the two ends of the cylindrical inner framework are respectively sleeved outside the first filter core seat and the second filter core seat;
the filter cylinder is sleeved outside the cylindrical inner framework, two ends of the filter cylinder are respectively abutted to the inner bottom surfaces of the first circular end cover and the second circular end cover and are respectively fixedly connected with the first boss and the second boss, the cross section of the filter cylinder is in a ring shape formed by alternately connecting a plurality of saddle shapes and inverted V shapes, and fold lines of the saddle shapes and the inverted V shapes are parallel to the axis of the cylindrical inner framework.
Further, the filter cartridge is obtained in the following manner: the filter cartridge is formed by pleating a first rectangular pleated filter cake to form a second rectangular pleated filter cake, and then overlapping opposite sides of the second rectangular pleated filter cake according to a preset width L, wherein the pleats of the first rectangular pleated filter cake are wavy, and the pleats of the second rectangular pleated filter cake are in a plurality of saddle-shaped and inverted V-shaped which are alternately connected, and are formed by pleating wavy wave crests and wave troughs.
Further, the saddle-shaped height H satisfies:
15mm≤H≤16mm。
further, the height h of the inverted V satisfies:
4mm≤h≤5mm。
further, the saddle-shaped height H and the inverted V-shaped height H satisfy:
3h≤H≤4h。
further, the preset width L satisfies:
3mm≤L≤5mm。
still further, the saddle-shaped large opening width is between 8mm and 12 mm.
Further, the two arched parts of the saddle are sharp.
Further, the outer bottoms of the first round end cover and the second round end cover are respectively and coaxially fixed with a first sealing gasket and a second sealing gasket, and the inner diameters of the first sealing gasket and the second sealing gasket are the same as the inner diameter of the filter cylinder.
Compared with the prior art, the technical scheme of the invention mainly has the following advantages:
1. through the section of a filter drum design of natural gas filter core by a plurality of saddle fold and reverse V shape fold connect in turn and constitute annular, and the fold line of all folds is all parallel with the inner skeleton axis, and saddle fold plays main filtration effect, and reverse V shape fold then has isolated the filter face of saddle fold, has effectively prevented the parallel fold phenomenon that these filter faces produced under high pressure differential.
2. The saddle-shaped and inverted V-shaped cross sections of the filter cartridge are designed into structures with different heights, specifically, the saddle-shaped height is 3-4 times of the inverted V-shaped height, the saddle-shaped height is specifically set between 15-16mm, the inverted V-shaped height is set between 4-5mm, and the width of a large opening of two openings of the saddle-shaped is controlled between 8-12 mm. Under the height and the width, the oil filter element can be ensured to prevent the occurrence of the fold, and the filter surfaces of the inverted V-shaped folds also generate certain filtering effect, so that the whole filtering area of the natural gas filter element can be increased to the maximum extent, and the optimal filtering effect is achieved.
3. The filter cylinder of the natural gas filter element is fixed through the bonding edge, the bonding edge width is limited to 3-5mm, the bonding edge firmness can be ensured, and the filtering effect is not influenced. The sealing washers are arranged outside the two end covers, the inner diameters of the sealing washers are the same as the inner diameter of the filter cylinder, and the sealing washers are connected in a mode of being fixed by an adhesive, so that the consistency of the appearance of the finished filter element is stronger, and the tightness of the filter element is also stronger.
Drawings
FIG. 1 is a front cross-sectional view of an anti-shirring natural gas cartridge in accordance with an embodiment of the present invention;
FIG. 2 is a schematic top view of an anti-parallel-fold natural gas cartridge in an embodiment of the present invention;
FIG. 3 is a schematic illustration of a second rectangular pleated filter cake in an embodiment of the invention;
FIG. 4 is a schematic diagram of a second rectangular pleated filter cake after fixing the spacing of the V-shaped structures using a wedge tooling in an embodiment of the present invention;
FIG. 5 is a schematic illustration of a first rectangular pleated filter cake in an embodiment of the invention;
fig. 6 is a saddle-shaped and V-shaped highly schematic view of an embodiment of the present invention.
In the figure: 1 a-first round end cap, 1 b-second round end cap, 2-inner frame, 3-filter cartridge, 4 a-first boss, 4 b-second boss, 5 a-first through hole, 5 b-second through hole, 6 a-first filter cartridge seat, 6 b-second filter cartridge seat, 7-saddle shape, 8-inverted V shape, 9-fold line, 10-second rectangular fold filter cake, 11-first rectangular fold filter cake, 12-wave shape, 13-opposite side, 14-first sealing gasket, 15-second sealing gasket, 16-wedge tooling, 17-adhesive.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, in this embodiment, a front cross-sectional view of an anti-creasing natural gas filter element includes a first circular end cap 1a, a second circular end cap 1b, a cylindrical inner skeleton 2, and a filter cartridge 3, where the two end caps and the inner skeleton 2 are made of metal materials such as carbon steel, stainless steel, or aluminum alloy, and are formed by machining, or may be injection molded by non-metal materials such as ABS.
The first circular end cap 1a is circumferentially provided with a first boss 4a, a first through hole 5a is formed in the center of the first boss, a hollow cylindrical first filter cartridge seat 6a coaxial with the first through hole 5a is arranged on the inner bottom surface, and the inner diameter of the first filter cartridge seat 6a is the same as the diameter of the first through hole 5 a.
The second boss 4b is circumferentially arranged on the second circular end cover 1b, the second through hole 5b is formed in the center of the second boss, the hollow cylindrical second filter core seat 6b coaxial with the second through hole 5b is arranged on the inner bottom surface, and the inner diameter of the second filter core seat 6b is the same as the diameter of the second through hole 5 b.
The two ends of the cylindrical inner framework 2 are respectively sleeved outside the first filter core seat 6a and the second filter core seat 6 b.
The filter cylinder 3 is sleeved outside the inner framework 2, two ends of the filter cylinder 3 are respectively abutted to the inner bottom surfaces of the first circular end cover 1a and the second circular end cover 1b and are respectively fixedly connected with the first boss 4a and the second boss 4b, specifically, a high-temperature-resistant adhesive 17 can be adopted, and the adhesive 17 can be fixed with the two bosses by using colloid such as high-temperature epoxy glue. As shown in fig. 2, the cross section of the filter cartridge 3 is in a circular ring shape formed by alternately connecting a plurality of saddle-shaped shapes 7 and inverted V-shaped shapes 8, and fold lines 9 of the saddle-shaped shapes 7 and the inverted V-shaped shapes 8 are parallel to the central axis of the inner skeleton 2.
Preferably, the filter cartridge 3 is formed by joining opposite sides 13 of the second rectangular pleated filter cake 10 as shown in fig. 5, and specifically, the opposite sides may be welded, such as by continuous resistance welding, to fasten the opposite sides 13. The second rectangular pleated filter cake 10 is formed by pleating the first rectangular pleated filter cake 11 shown in fig. 3 again, the cross section of the first rectangular pleated filter cake 11 along the direction perpendicular to the opposite sides 13 is in a wave shape 12, the wave crests and wave troughs of the wave shape 12 are pleated again to form the second rectangular pleated filter cake 10 shown in fig. 5, and the cross section of the second rectangular pleated filter cake 10 along the direction perpendicular to the opposite sides 13 is in a plurality of saddle shapes 7 and inverted V shapes 8 which are alternately connected.
The processing method for the second rectangular fold filter cake comprises the following steps:
1) Cutting and blanking a metal mesh material made of carbon steel, stainless steel or brass by adopting a cutting edge machine according to the size requirement of a filter element, and forming a rectangular filter material after cutting, wherein the width of the rectangular filter material is not more than 800mm, and the length is determined according to the actual requirement of the filter element;
2) The rectangular filter material is pleated as required by a pleater to form a first rectangular pleated filter cake 11, which has a longitudinal section in a direction perpendicular to the pleat lines 9 in the form of a plurality of waves 12 formed by continuous V-shaped structures, or in other embodiments, may have a plurality of waves formed by continuous U-shaped structures. The pleating machine with adjustable pleat height is selected for pleating, and the height of the V-shape is controlled between 7 mm and 21mm, preferably 20mm. The heights of the V-shaped structures can be all the same, or the V-shaped structures can be arranged at intervals of two heights, or a plurality of V-shaped structures can be arranged at intervals in order or at intervals in disorder;
3) As shown in fig. 4, a wedge tooling 16 is embedded in the V-shaped structure to fix the V-shaped structure pitch of the first rectangular pleat cake 11 and control the pitch to between 8-12mm, preferably 10mm. Then pleating at the peaks and valleys of the wave shape 12 by a digitally controlled pleating machine with adjustable pleating pleat height set as the V-shaped structure height of step 2)A second rectangular filter cake 10 is formed by forming a plurality of saddle-shaped 7 and inverted V-shaped 8 which are alternately connected, when the heights of the V-shaped structures are not all the same, namely the two heights are arranged at intervals, or the heights are arranged at orderly intervals or unordered intervals, and correspondingly, the heights of the saddle-shaped 7 and the heights of the inverted V-shaped 8 are also different;
4) After the second rectangular fold filter cake 10 is folded, the filter cake is bonded by an adhesive 17 after being butted end to end, or the opposite edges are lapped according to a preset width L and then fixed by adopting a continuous resistance welding mode, so that the filter cartridge 3 is formed.
Preferably, the preset width L satisfies:
L1≤L≤L2 (1)
in this embodiment, L1 is preferably 3mm, and L2 is preferably 5mm, and if the width is less than 3mm, the firmness at the lap is insufficient, and if the lap is greater than 5mm, the filtering effect of the face where the filter cartridge lap is located is affected.
When the longitudinal section of the second rectangular pleated filter cake in the direction perpendicular to the pleat lines is in a plurality of continuous V-shaped structures, as shown in fig. 6, the arched parts on two sides of the saddle-shaped 7 formed by pleating the second rectangular pleated filter cake again are sharp angles, the angle of the sharp angles is between 25 degrees and 75 degrees, if the angle of the sharp angles is smaller than 25 degrees, the pleating phenomenon is easy to occur, and if the angle of the sharp angles is larger than 75 degrees, the distance between pleats of the filter cartridge rolled by the rectangular pleated filter cake with a certain size is too large, the diameter of the filter cartridge is too large, and the filtering effect of the filter cartridge is greatly reduced. It will be appreciated by those skilled in the art that if the longitudinal section is in the form of a plurality of continuous U-shaped structures, then the two sides of saddle 7 are arched to form rounded corners, the angular extent of which is the same as the angular extent of the sharp corners.
Preferably, the saddle 7 formed by the secondary pleating has a height H that satisfies:
H1≤H≤H2 (2)
wherein, when the height of the V-shaped structure is preferably 20mm, H2 is preferably 16mm, H1 is preferably 15mm, and H is preferably 15.5mm.
Preferably, the height h of the inverted V-shape 8 satisfies:
h1≤h≤h2 (3)
where the height of the V-shaped structure is preferably 20mm, h1 is preferably 4mm, h2 is preferably 5mm, and the optimum height of h is preferably 4.5mm.
Preferably, the height H of saddle 7 and the height H of inverted V8 satisfy:
3h≤H≤4h (4)
when the heights of H and H are selected to be 15.5mm and 4.5mm, the filter area of the filter cartridge 3 is increased, and the filter effect is obviously better than that of a filter cartridge of a conventional natural gas filter cartridge, besides the impact force of oil can be better resisted and the occurrence of fold is prevented.
Preferably, the first sealing gasket 14 and the second sealing gasket 15 are coaxially arranged on the outer bottom surfaces of the first circular end cover 1a and the second circular end cover 1b, the inner diameter of the first sealing gasket 14 is the same as the diameter of the first through hole 5a, the diameters of the second sealing gasket 15 and the second through hole 5b are the same, the sealing performance at the end cover can be better due to the arrangement of the sealing gaskets, and the filtering effect of the filter element is further improved.
The first sealing gasket 14 and the second sealing gasket 15 are all metal materials, can be fixedly adhered to the outer bottom surfaces of the two end covers by adopting an adhesive, and can also be fixed with the two end covers by adopting other means capable of achieving the fixing effect, so that the assembly is easier and the better sealing effect is realized.
It will be readily appreciated by those skilled in the art that the foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. An anti-pleating natural gas filter element, which comprises a first circular end cover (1 a), a second circular end cover (1 b), a cylindrical inner framework (2) and a filter cartridge (3), and is characterized in that:
a first boss (4 a) is arranged on the circumference of the first round end cover (1 a), a first through hole (5 a) is formed in the center of the first boss, a hollow cylindrical first filter core seat (6 a) coaxial with the first through hole (5 a) is arranged on the inner bottom surface of the first round end cover, and the inner diameter of the first filter core seat (6 a) is the same as the diameter of the first through hole (5 a);
a second boss (4 b) is arranged on the circumference of the second round end cover (1 b), a second through hole (5 b) is formed in the center of the second boss, a hollow cylindrical second filter core seat (6 b) coaxial with the second through hole (5 b) is arranged on the inner bottom surface of the second round end cover, and the inner diameter of the second filter core seat (6 b) is the same as the diameter of the second through hole (5 b);
the two ends of the cylindrical inner framework (2) are respectively sleeved outside the first filter core seat (6 a) and the second filter core seat (6 b);
the filter cylinder (3) is sleeved outside the cylindrical inner framework (2), two ends of the filter cylinder (3) are respectively abutted to the inner bottom surfaces of the first circular end cover (1 a) and the second circular end cover (1 b) and are respectively fixedly connected with the first boss (4 a) and the second boss (4 b), the cross section of the filter cylinder (3) is in a ring shape formed by alternately connecting a plurality of saddle shapes (7) and inverted V shapes (8), and fold lines (9) of the saddle shapes (7) and the inverted V shapes (8) are parallel to the axis of the cylindrical inner framework (2); the height H of the saddle-shaped (7) is 15mm or less and 16mm or less, and the height H of the inverted V-shaped (8) is 4mm or less and 5mm or less; and H is more than or equal to 3H and less than or equal to 4H.
2. An anti-shirring natural gas cartridge as defined in claim 1,
the filter cartridge is obtained in the following manner: a second rectangular pleated filter cake (10) is formed by pleating the first rectangular pleated filter cake (11), and then the opposite sides (13) of the second rectangular pleated filter cake (10) are used for filtering the second rectangular pleated filter cake
The filter cylinder (3) is formed after being lapped according to a preset width L, wherein the folds of the first rectangular fold filter cake are in a wave shape (12), and the folds of the second rectangular fold filter cake (10) are in a plurality of alternative structures of the saddle shape (7) and the inverted V shape (8), and are formed after the wave crests and the wave troughs of the wave shape (12) are pleated.
3. An anti-shirring natural gas filter cartridge as in claim 2, wherein said predetermined width L satisfies:
3mm≤L≤5mm。
4. a natural gas filter cartridge as claimed in any one of claims 1 to 2, characterized in that the saddle-shaped (7) has a large opening width of between 8mm and 12 mm.
5. An anti-fold natural gas filter cartridge according to any one of claims 1 to 2, characterized in that the two arched portions of the saddle-shaped (7) are sharp.
6. A natural gas filter cartridge as claimed in claim 1, wherein the outer bottoms of the first circular end cap (1 a) and the second circular end cap (1 b) are coaxially fixed with a first sealing gasket (14) and a second sealing gasket (15), respectively, and the inner diameters of the first sealing gasket (14) and the second sealing gasket (15) are the same as the inner diameter of the filter cartridge (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210608829.4A CN114931820B (en) | 2022-05-31 | 2022-05-31 | Natural gas filter element capable of preventing fold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210608829.4A CN114931820B (en) | 2022-05-31 | 2022-05-31 | Natural gas filter element capable of preventing fold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114931820A CN114931820A (en) | 2022-08-23 |
| CN114931820B true CN114931820B (en) | 2023-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210608829.4A Active CN114931820B (en) | 2022-05-31 | 2022-05-31 | Natural gas filter element capable of preventing fold |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2739815A1 (en) * | 1977-09-03 | 1978-09-28 | Ceag Filter Entstaubung | Air filter cell - with frame locating trapezoidal walls and free ends of pleated V=shaped filter medium |
| JP2005205270A (en) * | 2004-01-21 | 2005-08-04 | Taiko:Kk | Filter element |
| CN205699897U (en) * | 2016-06-24 | 2016-11-23 | 江苏绿色大地环境修复有限公司 | A kind of air cleaner and filter element |
| CN205832835U (en) * | 2016-06-30 | 2016-12-28 | 江苏人和环保设备有限公司 | A kind of overlap joint skeleton dedusting filter cylinder |
| CN106512600A (en) * | 2017-01-17 | 2017-03-22 | 安徽工业大学 | Pleated type filter drum dust remover, filter drum frame thereof and use method of frame |
| CN214914226U (en) * | 2021-04-02 | 2021-11-30 | 深圳市福莱特环保设备有限公司 | High temperature resistant filter core |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3646934A1 (en) * | 2018-11-05 | 2020-05-06 | Carl Freudenberg KG | Filter element with counterfold and filter cartridge with such filter elements and filter cartridge with such a filter element |
-
2022
- 2022-05-31 CN CN202210608829.4A patent/CN114931820B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2739815A1 (en) * | 1977-09-03 | 1978-09-28 | Ceag Filter Entstaubung | Air filter cell - with frame locating trapezoidal walls and free ends of pleated V=shaped filter medium |
| JP2005205270A (en) * | 2004-01-21 | 2005-08-04 | Taiko:Kk | Filter element |
| CN205699897U (en) * | 2016-06-24 | 2016-11-23 | 江苏绿色大地环境修复有限公司 | A kind of air cleaner and filter element |
| CN205832835U (en) * | 2016-06-30 | 2016-12-28 | 江苏人和环保设备有限公司 | A kind of overlap joint skeleton dedusting filter cylinder |
| CN106512600A (en) * | 2017-01-17 | 2017-03-22 | 安徽工业大学 | Pleated type filter drum dust remover, filter drum frame thereof and use method of frame |
| CN214914226U (en) * | 2021-04-02 | 2021-11-30 | 深圳市福莱特环保设备有限公司 | High temperature resistant filter core |
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| Publication number | Publication date |
|---|---|
| CN114931820A (en) | 2022-08-23 |
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