CN111389129B - Interior formula coalescence filter core that advances outward - Google Patents
Interior formula coalescence filter core that advances outward Download PDFInfo
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- CN111389129B CN111389129B CN202010277227.6A CN202010277227A CN111389129B CN 111389129 B CN111389129 B CN 111389129B CN 202010277227 A CN202010277227 A CN 202010277227A CN 111389129 B CN111389129 B CN 111389129B
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- 238000004581 coalescence Methods 0.000 title claims description 8
- 238000001179 sorption measurement Methods 0.000 claims abstract description 22
- 239000003365 glass fiber Substances 0.000 claims abstract description 21
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 17
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 7
- 229920000742 Cotton Polymers 0.000 claims abstract description 5
- 239000004744 fabric Substances 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 238000001914 filtration Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 12
- 239000002245 particle Substances 0.000 abstract description 9
- 239000007787 solid Substances 0.000 abstract description 9
- 238000004080 punching Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000002776 aggregation Effects 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007363 regulatory process Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- 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
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
-
- 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
- B01D46/2414—End caps including additional functions or special forms
-
- 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
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
-
- 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
-
- 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
- C10L3/106—Removal of contaminants of water
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses an internal-in external-out type coalescent filter element, which comprises a vertical filter cylinder, and an upper end cover and a lower end cover which are correspondingly fixed at two ends of the filter cylinder, wherein the filter cylinder comprises an internal framework, a filter layer, a coalescent layer, an external framework and an adsorption layer which are sequentially nested from inside to outside, the internal framework is made of a punching plate, the filter layer is made of wood pulp filter paper, the coalescent layer comprises two layers of glass fibers and non-woven fabrics clamped between the two layers of glass fibers, the non-woven fabrics are bonded with the two layers of glass fibers through dispersed points, the external framework is made of a metal woven mesh, and the adsorption layer is made of all-cotton knitted fabrics. The water filter has the advantages of simple structure, low cost, safety, reliability, strong functionality and good filtering effect, and can simultaneously realize the purposes of solid particle filtration and water separation.
Description
Technical Field
The invention relates to a filter, in particular to a coalescing filter element for inward and outward movement.
Background
In the gas transmission pipe network, the filter element adopted by the existing filter can only filter solid particles in gas generally, but can not effectively filter moisture in the gas, and the moisture is condensed into water drops to easily cause the damage of pipeline components and parts, thereby influencing the safety and stability of the operation of the gas transmission pipe network. For example, moisture carried in the natural gas condenses into water drops on the pipe wall due to temperature reduction in the pressure regulating process, which often causes the phenomena of ice blockage of a signal pipe of the pressure regulator and damage of other pipe elements, and affects the safety and reliability of the operation of the natural gas pipe network.
Disclosure of Invention
The invention aims to provide an internal-in external-out type coalescing filter element which has the advantages of simple structure, low cost, safety, reliability, strong functionality and good filtering effect and can simultaneously realize the purposes of filtering solid particles and separating water.
In order to solve the problems in the prior art, the invention provides an internal-in external-out type coalescing filter element, which comprises a vertical filter cylinder, an upper end cover and a lower end cover, wherein the upper end cover and the lower end cover are correspondingly fixed at two ends of the filter cylinder, the filter cylinder comprises an inner framework, a filter layer, a coalescing layer, an outer framework and an adsorption layer which are sequentially nested from inside to outside, the inner framework is made of a punching plate, the filter layer is made of wood pulp filter paper, the coalescing layer comprises two layers of glass fibers and non-woven fabrics clamped between the two layers of glass fibers, the non-woven fabrics are bonded with the two layers of glass fibers through dispersed points, the outer framework is made of a metal woven mesh, and the adsorption layer is made of all-cotton knitted fabrics.
Furthermore, the coalescent filter element with the inner inlet and the outer outlet is provided with an auxiliary adsorption layer made of non-woven fabric, wherein the auxiliary adsorption layer is sleeved between the outer framework and the adsorption layer.
Further, the inner-inlet and outer-outlet type coalescing filter element comprises an upper end cover, an upper cover plate and a lower end cover, wherein the tops of the upper inner ring and the upper outer ring are connected into a whole through an annular upper cover plate; the lower end cover comprises a lower inner ring and a lower outer ring, and the bottoms of the lower inner ring and the lower outer ring are connected into a whole through an annular lower cover plate; the periphery of the upper end of the filter cylinder is clamped between the upper inner ring and the upper outer ring of the upper end cover, and the periphery of the lower end of the filter cylinder is clamped between the lower inner ring and the lower outer ring of the lower end cover.
Further, the coalescing filter element with the inner inlet and the outer outlet is characterized in that an upper sealing washer made of rubber or felt is arranged on the upper side of the upper end cover, and a lower sealing washer made of rubber or felt is arranged on the lower side of the lower end cover.
Furthermore, the coalescing filter element with the inner inlet and the outer outlet is characterized in that an upper sealing ring made of felt is arranged between the top of the filter cylinder and the upper end cover, and a lower sealing ring made of felt is arranged between the bottom of the filter cylinder and the lower end cover.
Furthermore, the filter layer and the coalescing layer are in star shapes at the ends.
Compared with the prior art, the coalescent filter element with the internal inlet and the external outlet has the following advantages: according to the invention, the vertical filter cylinder, the upper end cover and the lower end cover which are correspondingly fixed at two ends of the filter cylinder are arranged, so that the filter cylinder is provided with the inner framework, the filter layer, the aggregation layer, the outer framework and the adsorption layer which are sequentially nested from inside to outside, the inner framework is made of a punching plate, the filter layer is made of wood pulp filter paper, the aggregation layer is provided with two layers of glass fibers and non-woven fabrics clamped between the two layers of glass fibers, the non-woven fabrics are bonded with the two layers of glass fibers through scattered points, the outer framework is made of a metal woven mesh, and the adsorption layer is made of all-cotton knitted fabrics. Therefore, the internal-in and external-out type coalescing filter element with simple structure, low cost, safety, reliability, strong functionality and good filtering effect is formed. In practical application, the internal-in external-out type coalescence filter element is vertically arranged, one end of the internal-in external-out type coalescence filter element is plugged, the other end of the internal-in external-out type coalescence filter element is used as an air inlet, when air sequentially flows through the filter layer, the coalescence layer and the adsorption layer from inside to outside, solid particles in the air can be filtered out through the filter layer, water in the air can be gathered into water drops through the coalescence layer, the water drops can be continuously adsorbed through the adsorption layer, and the adsorbed water is settled to the bottom of the filter element under the action of gravity, so that the purposes of solid particle filtration and water separation are simultaneously achieved. The invention ensures the stability of the structure by arranging the inner framework and the outer framework, ensures the filtering effect of solid particles by making the filtering layer by wood pulp filter paper, improves the moisture coalescing efficiency and effect by arranging the two layers of glass fibers and the non-woven fabric sandwiched between the two layers of glass fibers on the coalescing layer, and bonds the non-woven fabric with the two layers of glass fibers through dispersed points, thereby enhancing the stability of the structure and prolonging the service life on the one hand, and being more beneficial to coalescing and collecting moisture through the dispersed bonding points on the other hand on the basis of ensuring the air permeability.
An inside-in outside-out coalescing filter element according to the present invention is described in further detail below with reference to the embodiments shown in the accompanying drawings.
Drawings
FIG. 1 is a half sectional view of an inside-in outside-out coalescing filter element of the present invention;
FIG. 2 is an enlarged view of a portion of the portion A of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1 at position B;
FIG. 4 is a schematic end view of a filter layer of an internal inlet and external outlet coalescing filter element according to the present invention;
FIG. 5 is a schematic end view of a coalescing stage in an inside-in outside-out coalescing filter element according to the present invention;
fig. 6 is a schematic view of the spreading and bond distribution of the coalescing filter element of an inside-in and outside-out coalescing filter element of the present invention.
Detailed Description
First, it should be noted that, the directional terms such as up, down, left, right, front, rear, etc. described in the present invention are only described with reference to the accompanying drawings for understanding, and are not intended to limit the technical solution and the claimed scope of the present invention.
As shown in fig. 1 to 6, an embodiment of a coalescing filter element with an internal inlet and an external outlet according to the present invention includes a vertical filter cartridge 1, and an upper end cap 2 and a lower end cap 3 fixed to both ends of the filter cartridge 1. The filter cartridge 1 is provided with an inner frame 11, a filter layer 12, a coalescing layer 13, an outer frame 14 and an adsorption layer 15 which are nested in this order from inside to outside. Making the inner framework 11 by adopting a punching plate; the filter layer 12 is made of wood pulp filter paper; arranging two layers of glass fibers and non-woven fabric sandwiched between the two layers of glass fibers on the aggregation layer 13, and bonding the non-woven fabric with the two layers of glass fibers through dispersed points; the outer framework 14 is made of a metal mesh grid; the adsorption layer 15 is made of all-cotton knitted fabric. Through the structure arrangement, the internal-in and external-out type coalescing filter element with simple structure, low cost, safety, reliability, strong functionality and good filtering effect is formed. In practical application, the internal-in and external-out type coalescing filter element is vertically arranged, one end of the internal-in and external-out type coalescing filter element is plugged, the other end of the internal-in and external-out type coalescing filter element is used as an air inlet, when air sequentially flows through the filter layer 12, the coalescing layer 13 and the adsorption layer 15 from inside to outside, solid particles in the air can be filtered out through the filter layer 12, water in the air can be coalesced into water drops through the coalescing layer 13, the water drops can be continuously adsorbed through the adsorption layer 15, and adsorbed water is settled to the bottom of the filter element under the action of gravity, so that the purposes of filtering the solid particles and separating the water are simultaneously achieved. The invention ensures the stability of the structure by arranging the inner framework 11 and the outer framework 14, ensures the filtering effect of solid particles by making the filtering layer 12 from wood pulp filter paper, improves the moisture coalescing efficiency and effect by arranging two layers of glass fibers and non-woven fabric sandwiched between the two layers of glass fibers on the coalescing layer 13, and bonds the non-woven fabric with the two layers of glass fibers through dispersed points, thereby enhancing the stability of the structure and prolonging the service life on the one hand, and being more beneficial to the coalescing and collecting of moisture through the dispersed bonding points on the other hand on the basis of ensuring the air permeability. It should be noted that the inside-in and outside-out type coalescing filter element of the invention should be used vertically so that the separated water can quickly settle to the bottom of the filter element, and the normal ventilation function of the filter element is ensured.
As an optimized scheme, the auxiliary adsorption layer 16 made of non-woven fabric is sleeved between the outer framework 14 and the adsorption layer 15, so that the water adsorption and separation effects are enhanced. As a specific embodiment, the present invention adopts the following structure for the upper end cap 2 and the lower end cap 3: the upper end cover 2 comprises an upper inner ring 21 and an upper outer ring 22, and the tops of the upper inner ring 21 and the upper outer ring 22 are connected into a whole through an annular upper cover plate 23; the lower end cap 3 includes a lower inner ring 31 and a lower outer ring 32, and the bottoms of the lower inner ring 31 and the lower outer ring 32 are connected together by an annular lower cover plate 33. And the upper end periphery of the filter cartridge 1 is clamped between the upper inner ring 21 and the upper outer ring 22 of the upper end cap 2, and the lower end periphery of the filter cartridge 1 is clamped between the lower inner ring 31 and the lower outer ring 32 of the lower end cap 3. The upper end cap 2 and the lower end cap 3 of this arrangement have the characteristics of simple structure and stable and reliable connection, and it should be noted that the present invention generally makes the upper inner ring 21, the upper outer ring 22 and the upper cover plate 23 integrally, and makes the lower inner ring 31, the lower outer ring 32 and the lower cover plate 33 integrally, so as to enhance the integrity and the structural strength thereof.
In an optimized embodiment, an upper sealing washer 4 made of rubber or felt is arranged on the upper side of the upper end cover 2, and a lower sealing washer 5 made of rubber or felt is arranged on the lower side of the lower end cover 3. When the filter element is installed and used, the upper sealing washer 4 and the lower sealing washer 5 can quickly realize reliable sealing of the upper end and the lower end of the filter element. It should be noted that the end that is to be plugged should be completely closed, while the end that is to be the air inlet is simply sealed around by a sealing gasket, and an internal opening should be left for air inlet. Further, in this embodiment, an upper seal ring 6 made of felt is provided between the top of the filter cartridge 1 and the upper end cap 2, and a lower seal ring 7 made of felt is provided between the bottom of the filter cartridge 1 and the lower end cap 3. The sealing performance of the connection part of the filter cartridge 1 and the upper end cover 2 and the lower end cover 3 is improved through the upper sealing ring 6 and the lower sealing ring 7, so that the gas is prevented from directly passing through the connection part to influence the filtering and moisture separating effects.
In practical applications, the filter layer 12 is generally folded into a star-shaped end structure to increase the contact area with the gas and improve the filtering effect, and the coalescing layer 13 is also folded into a star-shaped end structure to increase the contact area with the gas and improve the moisture separation effect. In addition, the upper end cover 2, the lower end cover 3, the inner frame 11 and the outer frame 14 are usually made of stainless steel to enhance the structural strength and the corrosion resistance and prolong the service life, but the invention is not limited to this, and can also be made of galvanized metal materials.
The above examples are only for describing the preferred embodiments of the present invention, and do not limit the scope of the claimed invention, and various modifications made by those skilled in the art according to the technical solutions of the present invention should fall within the scope of the invention defined by the claims without departing from the design concept of the present invention.
Claims (4)
1. An inner-in and outer-out type coalescent filter element comprises a vertical filter cylinder (1), and an upper end cover (2) and a lower end cover (3) which are correspondingly fixed at two ends of the filter cylinder (1), and is characterized in that the filter cylinder (1) comprises an inner framework (11), a filter layer (12), a coalescent layer (13), an outer framework (14) and an adsorption layer (15) which are sequentially nested from inside to outside, the inner framework (11) is made of a punched plate, the filter layer (12) is made of wood pulp filter paper, the coalescent layer (13) comprises two layers of glass fibers and non-woven fabric sandwiched between the two layers of glass fibers, the non-woven fabric is bonded with the two layers of glass fibers through dispersed points, the outer framework (14) is made of a metal woven mesh, and the adsorption layer (15) is made of all-cotton knitted fabric; an auxiliary adsorption layer (16) made of non-woven fabric is sleeved between the outer framework (14) and the adsorption layer (15); the ends of the filter layer (12) and the coalescence layer (13) are both in a star shape.
2. An internal-in external-out coalescing filter element according to claim 1, wherein the upper end cap (2) comprises an upper inner ring (21) and an upper outer ring (22), the tops of the upper inner ring (21) and the upper outer ring (22) are connected into a whole through an annular upper cover plate (23); the lower end cover (3) comprises a lower inner ring (31) and a lower outer ring (32), and the bottoms of the lower inner ring (31) and the lower outer ring (32) are connected into a whole through an annular lower cover plate (33); the periphery of the upper end of the filter cylinder (1) is clamped between an upper inner ring (21) and an upper outer ring (22) of the upper end cover (2), and the periphery of the lower end of the filter cylinder (1) is clamped between a lower inner ring (31) and a lower outer ring (32) of the lower end cover (3).
3. An inside-in and outside-out coalescing filter element according to claim 2, wherein the upper side of the upper end cover (2) is provided with an upper sealing gasket (4) made of rubber or felt, and the lower side of the lower end cover (3) is provided with a lower sealing gasket (5) made of rubber or felt.
4. An inside-in and outside-out coalescing filter element according to claim 3, wherein an upper sealing ring (6) made of felt is arranged between the top of the filter cartridge (1) and the upper end cover (2), and a lower sealing ring (7) made of felt is arranged between the bottom of the filter cartridge (1) and the lower end cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010277227.6A CN111389129B (en) | 2020-04-10 | 2020-04-10 | Interior formula coalescence filter core that advances outward |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010277227.6A CN111389129B (en) | 2020-04-10 | 2020-04-10 | Interior formula coalescence filter core that advances outward |
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| Publication Number | Publication Date |
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| CN111389129A CN111389129A (en) | 2020-07-10 |
| CN111389129B true CN111389129B (en) | 2021-10-15 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112023559A (en) * | 2020-08-21 | 2020-12-04 | 贵州轮胎股份有限公司 | Rotary dehydrator and air compressor |
| CN112973295B (en) * | 2021-03-18 | 2022-03-29 | 中国石油大学(北京) | Coalescence filter core with flowing back function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4124360A (en) * | 1975-07-07 | 1978-11-07 | Finite Filter Co., Inc. | Coalescing demister |
| CN2564224Y (en) * | 2002-08-21 | 2003-08-06 | 固安县中航油过滤器材有限公司 | Filtering element for filter |
| CN203227353U (en) * | 2013-04-25 | 2013-10-09 | 中国人民解放军空军油料研究所 | Filtering and agglomerating filter core for fuel oil filtering and separating device |
| CN109847490A (en) * | 2019-03-20 | 2019-06-07 | 中国石油大学(北京) | A kind of rigidity gas-liquid Coalescence filter core, preparation method and device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202410406U (en) * | 2011-11-24 | 2012-09-05 | 成都盛尔嘉科技有限公司 | Vinyl monomer gas phase filtering device |
| CN203183850U (en) * | 2013-01-31 | 2013-09-11 | 无锡伊诺特石化机械设备有限公司 | Natural gas filtration and separation core |
| CN104083948B (en) * | 2014-07-29 | 2016-06-08 | 重庆再升科技股份有限公司 | A kind of for air filtration glass fibre cotton composite preventing and treating PM2.5 and preparation method thereof |
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2020
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4124360A (en) * | 1975-07-07 | 1978-11-07 | Finite Filter Co., Inc. | Coalescing demister |
| CN2564224Y (en) * | 2002-08-21 | 2003-08-06 | 固安县中航油过滤器材有限公司 | Filtering element for filter |
| CN203227353U (en) * | 2013-04-25 | 2013-10-09 | 中国人民解放军空军油料研究所 | Filtering and agglomerating filter core for fuel oil filtering and separating device |
| CN109847490A (en) * | 2019-03-20 | 2019-06-07 | 中国石油大学(北京) | A kind of rigidity gas-liquid Coalescence filter core, preparation method and device |
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Denomination of invention: A type of inward and outward coalescence filter element Granted publication date: 20211015 Pledgee: China Zheshang Bank Co.,Ltd. Changzhou Branch Pledgor: Jiangsu Shengwei Gas Technology Co.,Ltd. Registration number: Y2024980002408 |