CN203484002U - Coalescent filter and filter element - Google Patents
Coalescent filter and filter element Download PDFInfo
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- CN203484002U CN203484002U CN201320591903.2U CN201320591903U CN203484002U CN 203484002 U CN203484002 U CN 203484002U CN 201320591903 U CN201320591903 U CN 201320591903U CN 203484002 U CN203484002 U CN 203484002U
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- filter core
- filter
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Abstract
The utility model discloses a coalescent filter and a filter element. The filter element comprises a first filter element with an inner chamber, which is used for filtering out liquid impurities in gas, and further comprises a second filter element with a filter chamber, which is used for filtering out solid impurities in gas; the second filter element is embedded in the first filter element. Due to such the arrangement, when entering the filter chamber of the filter element, gas is firstly filtered through the second filter element on the inner side so as to filter out the solid impurities in the gas, and then is filtered through the first filter element on the outer side so as to filter out the liquid impurities, and due to the arrangement of the second filter element, the solid impurities in the gas are prevented from blocking on an air intake side surface of the first filter element and being detained inside the first filtering medium of the first filter element. Therefore, the service life and the replacement period of the filter element can be prolonged, and the running cost is reduced.
Description
Technical field
The utility model relates to multiphase flow dividing technology field, particularly relates to a kind of coalescing filter and filter core thereof.
Background technology
In exploitations such as natural gas and coal bed gas with collect in defeated process, conventionally all can be entrained with solid and liquid impurity, these impurity can endanger conduit running safety, generally by filtering separation device is set, remove impurity.Although most of filtering separation devices can be removed solid impurity and process the liquid impurity of larger drop, also need coalescing filter to process fine droplets.
Coalescing filter is the filter of fine droplets in a kind of removal gas (being often referred to the drop below 1 μ m).Coalescence filter core is the core component of coalescing filter, coalescing filter relies on Coalescence filter core interception drop, make fine droplet be agglomerated into larger drop in the filter medium inside of Coalescence filter core, thereby along Coalescence filter core row, drive under Action of Gravity Field, the gas after filtration is discharged from coalescing filter outlet.
Common Coalescence filter core, comprise coalescent inner frame, coalescent outer skeleton and coalescing filtration medium, described coalescing filtration medium is arranged between coalescent inner frame and coalescent outer skeleton, this three's two ends are also provided with upper end cover and bottom end cover, wherein, the upper end of the filter chamber of upper end cover shutoff Coalescence filter core, bottom end cover has through hole, is communicated with the filter chamber of Coalescence filter core.During filtration, gas enters in filter chamber and upwards and flows from the lower end of Coalescence filter core, and radially through Coalescence filter core, the liquid impurity in gas coalescent row under the effect of coalescing filtration medium drive simultaneously, and the gas after filtration is discharged from coalescing filter outlet.
In actual moving process, even if collect defeated early stage, the solid impurity in gas has been carried out to filtering, also still remaining in gas have solid impurity, and the solid impurity in gas is the biggest factor that affects coalescing filter safe operation.
At present conventional coalescing filter all only has coalescent and row preferably to drop and drives ability, does not have the disposal ability to solid impurity.Gas is when by coalescing filter, in gas, remaining solid impurity can block up on the surface of Coalescence filter core air inlet side or be trapped in the inside of Coalescence filter core filter medium, cause Coalescence filter core pressure drop excessive, affect the security of whole gathering system, shorten the service life of Coalescence filter core, improve the replacement frequency of Coalescence filter core, operating cost is increased.
In addition, because gas enters filter chamber from Coalescence filter core lower end, oriented mobile trend, and will arrange downwards by the coalescent drop of Coalescence filter core, drive, so, up gas easily impacts descending coalescent drop, it is formed to retardation, affect the strainability of Coalescence filter core.
In view of this, how extending service life and the replacement cycle of filter core, is the current technical issues that need to address of those skilled in the art.
Utility model content
The purpose of this utility model is to provide a kind of coalescing filter and filter core thereof, and the structure setting of this filter core can extend service life and the replacement cycle of filter core, reduces operating cost.
For solving the problems of the technologies described above, the utility model provides a kind of filter core of coalescing filter, comprises first filter core with inner chamber, for the liquid impurity of filtering gas, also comprises second filter core with filter chamber, for the solid impurity of filtering gas; Described the second filter core is flush-mounted in described the first filter core.
Preferably, described the second filter core comprises having the second inner frame of filter chamber and the second filter medium that suit is fixed on described the second inner frame, and both two ends are installed with respectively the second upper end cover and the second bottom end cover; Described the second upper end cover is connected with the first upper end cover of described the first filter core, and the upper end of filter chamber described in shutoff, and described the second bottom end cover is connected with the first bottom end cover of described the first filter core, and has the through hole that is communicated with described filter chamber.
Preferably, described the first filter core and described the second filter core removably connect.
Preferably, upper end cover and the bottom end cover of described the second filter core, described the first filter core removably connect respectively.
Preferably, described the second upper end cover and described the first upper end cover are threaded connection, described the second bottom end cover and described the first bottom end cover clamping.
Preferably, between described the second upper end cover and described the first upper end cover, and or, between described the second bottom end cover and described the first bottom end cover, be provided with gasket seal.
Preferably, described the second upper end cover is provided with rotation head.
Preferably, described the second filter medium is pleating filter media.
Preferably, between described the second filter core and described the first filter core, there is gap.
The filter core of the coalescing filter that the utility model provides has extended its service life by architecture advances.Particularly, in this programme, the inner chamber of the first filter core is embedded with second filter core with filter chamber, and wherein, the first filter core is for the liquid impurity of filtering gas, and the second filter core is for the solid impurity of filtering gas.So arrange, when gas enters after filter chamber, first through being positioned at the second filter element filtering of inner side, by the solid impurity filtering in gas, through being positioned at the first filter element filtering liquid impurity in outside, due to the setting of the second filter core, the solid impurity in gas can not block up inner with the first filter medium that is trapped in the first filter core in the air inlet side surface of the first filter core again, so extend service life and the replacement cycle of filter core, saved operating cost.
In addition, setting due to the second filter core, gas is first after the second filter core filtering solid impurity, through the first filter core filtering liquid impurity, so, avoided gas directly up through the first filter core again, thereby reduced gas when up, the retardation of the drop that the coalescent downward row of the first filter core is driven, is conducive to liquid impurity and drives the row of the first cartridge surface, improves filter efficiency.
In a preferred embodiment, described the first filter core and described the second filter core removably connect; So arrange, when the failure degree of the first filter core and the second filter core not for the moment, can be required according to actual conditions, only change the first filter core or only change the second filter core, further reduced operating cost.
In the preferred embodiment of another kind, the second filter medium of described the second filter core is pleating filter media; So arrange, increased the active area of the second filter core medium, improved the pollutant holding capability of the second filter core to solid impurity, extended the service life of the second filter core.
In the preferred embodiment of another kind, between described the first filter core and described the second filter core, there is gap; So arrange, between the first filter core and the second filter core, be formed with the long and narrow space of certain width, make gas after by the second filter core, enter before the first filter core, there is certain activity space, be beneficial to its reasonable layout, further reduce the retardation to coalescent drop, be more conducive to liquid impurity and drive the row of the first cartridge surface.
The utility model also provides a kind of coalescing filter, comprises sleeve and is located at the filter core in described sleeve, and described filter core is the filter core described in above-mentioned any one.
Because above-mentioned filter core has above-mentioned technique effect, so comprise that the coalescing filter of this filter core also has corresponding technique effect.
Accompanying drawing explanation
The structural representation of the filter core that Fig. 1 is a kind of coalescing filter that the utility model provides;
Fig. 2 is the structural representation of the first filter core in Fig. 1;
Fig. 3 is the structural representation of the second filter core in Fig. 1;
Fig. 4 is the exploded perspective view of filter core in Fig. 1;
Fig. 5 is the cross sectional representation of filter core in Fig. 1;
Fig. 6 is longitudinal partial sectional view of filter core in Fig. 1;
Fig. 7 is the syndeton schematic diagram of the upper end cover of the first filter core and the second filter core;
Fig. 8 is the syndeton schematic diagram of the bottom end cover of the first filter core and the second filter core;
Fig. 9 is the pressure drop comparison diagram of Coalescence filter core in filter core that under a kind of operating mode, the utility model provides and prior art;
Figure 10 is the filter efficiency comparison diagram of Coalescence filter core in filter core that under a kind of operating mode, the utility model provides and prior art.
In Fig. 1-8:
The specific embodiment
Core of the present utility model is to provide a kind of coalescing filter and filter core thereof, and the structure setting of this filter core can extend service life and the replacement cycle of filter core, reduces operating cost.
In order to make those skilled in the art person understand better the utility model scheme, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 1-4, the structural representation of the filter core that Fig. 1 is a kind of coalescing filter that the utility model provides; Fig. 2 is the structural representation of the first filter core in Fig. 1; Fig. 3 is the structural representation of the second filter core in Fig. 1; Fig. 4 is the exploded perspective view of filter core in Fig. 1.
In this embodiment, the filter core 10 of coalescing filter comprises first filter core 11 with inner chamber and second filter core 12 with filter chamber; Wherein, the first filter core 11 is for the liquid impurity of filtering gas, and the second filter core 12 is for the solid impurity of filtering gas; The second filter core 12 is flush-mounted in the first filter core 11.
So design, in the defeated process of collection of gas, when gas enters after the filter chamber of filter core 10, first through being positioned at the second filter core 12 of inner side, filter, by the solid impurity filtering in gas, through being positioned at first filter core 11 in outside, filter again, the liquid impurity in gas is filtered, finally from the outlet of coalescing filter, discharge.Setting due to the second filter core 12, solid impurity in gas can not block up in the air inlet side surface of the first filter core 11, be stranded in the first filter medium 112 inside of the first filter core 11, reduced the operating load of the first filter core 11, thereby service life and the replacement cycle of the first filter core 11 have been extended, again, the second filter core 12 is specifically designed to filtration solid impurity, so with respect to the Coalescence filter core in background technology, the cycle that its gathering because of solid impurity need to be changed is longer, comprehensive, this kind of structure to prolong service life and the replacement cycle of filter core 10, saved operating cost.
In addition, setting due to the second filter core 12, gas is first through the second filter core 12 filtering solid impurities, through the first filter core 11 filtering liquid impurities, so, avoided gas directly up through the first filter core 11 again, thereby reduced gas when up, the retardation of the drop that the coalescent downward row of the first filter core 11 is driven, is conducive to the row of liquid impurity on the first filter core 11 surfaces and drives, and improves filter efficiency.
The concrete structure of above-mentioned the first filter core 11 and the second filter core 12 can be referring to figs. 2 and 3.
The first filter core 11 comprises first inner frame 111 with inner chamber, suit is fixed on the first filter medium 112 of the first inner frame 111, and being set with the first outer skeleton 113 that is fixed on the first filter medium 112, three's two ends are installed with respectively the first upper end cover 114 and the first bottom end cover 115.Wherein, the first filter medium 112 can adopt multiple organic fibrous material to make, and according to porosity layered arrangement, to improve coalescent and strainability.
Particularly, between first filter core 11 each parts, can, by bonding fixed being integrated, also can guarantee sealing; Should be appreciated that to refer to the contact site of each parts here bonding.Certainly, also fixed sealing by other means.
Be appreciated that the first filter core 11 is equivalent to the Coalescence filter core of coalescing filter in background technology.
It is pointed out that diagram shown in the upper and lower Fig. 1 of take of the above-mentioned noun of locality is as benchmark definition, should be appreciated that the use of the described noun of locality, just in order to explain the clear and convenient of scheme, should not limit the protection domain of the application's request.Similarly following, repeat no more.
The second filter core 12 comprises having the second inner frame 121 of filter chamber and the second filter medium 122 that suit is fixed on the second inner frame 121, and both two ends are installed with respectively the second upper end cover 124 and the second bottom end cover 125.Wherein, the second upper end cover 124 is connected with the first upper end cover 114, and the upper end of filter chamber described in shutoff, and the second bottom end cover 125 is connected with the first bottom end cover 115, and has the through hole that is communicated with described filter chamber.Obviously, during filtration, gas enters filter chamber from lower end.
Similar with the first filter core 11, can be by bonding fixed being integrated, to guarantee sealing between each parts of the second filter core 12.
Can make further improvement to above-mentioned filter core 10.
Please also refer to Fig. 5 and Fig. 6, the cross sectional representation that Fig. 5 is filter core; Fig. 6 is longitudinal partial sectional view of filter core.
Between the first filter core 11 and the second filter core 12, there is gap, that is, between the outer peripheral face of the second filter core 12 and the first inner frame 111 of the first filter core 11, there is gap; So arrange, between the first filter core 11 and the second filter core 12, be formed with the long and narrow space of certain width, make air-flow after by the second filter core 12, enter before the first filter core 11, there is certain activity space, be beneficial to its reasonable layout, the retardation flowing to coalescent drop that can further reduce gas, is more conducive to the row of liquid impurity on the first filter core 11 surfaces and drives, and further improves filter efficiency.
Particularly, the scope in this gap is 1mm～3mm; Certainly, when actual setting, the scope in described gap can be set as required, be not limited to aforementioned range.
Further, the first filter core 11 and the second filter core 12 removably connect.Because the first filter core 11 is for filter liquide impurity, the second filter core 12 is for filtering solid impurity, so both failure degree may be inconsistent, as above after arranging, when filter core is after 10 operation a period of times, pressure drop acquires a certain degree, whole gathering system is produced to Safety Effect, in the time of cannot proceeding to filter to gas, can check filter core 10, if just the second filter core 12 lost efficacy, the first filter core 11 still can continue to use, only need be by the second filter core 12 dismounting and change, vice versa, so can further save operating cost.
A kind of easy mode of removably connecting is reliably that the first filter core 11 and the second filter core 12 removably connect respectively by both upper end cover, bottom end cover.
Specifically can understand with reference to figure 7-8, Fig. 7 is the syndeton schematic diagram of the upper end cover of the first filter core and the second filter core; Fig. 8 is the syndeton schematic diagram of the bottom end cover of the first filter core and the second filter core.
The first upper end cover 114 and the second upper end cover 124 are threaded connection; The first bottom end cover 115 is provided with the draw-in groove that holds the second bottom end cover 125, and the second bottom end cover 125 can be connected in the first bottom end cover 115.
During assembling, fixed being integrated of each parts of the first filter core 11, fixed being integrated of each parts of the second filter core 12, the second filter core 12 is inserted by the first upper end cover 114 of the first filter core 11, until the second bottom end cover 125 of the second filter core 12 is placed in the draw-in groove of the first bottom end cover 115, then the second filter core 12 is screwed, make to complete threaded engagement between its second upper end cover 124 and the first upper end cover 114.Should be appreciated that in the threaded engagement process of the second upper end cover 124 and the first upper end cover 114, under the rotarily driving of the second upper end cover 124, whole the second filter core 12 all rotates, so the setting of the first bottom end cover 115 draw-in grooves, is as the criterion can be convenient to the rotation of the second bottom end cover 125.
In order to facilitate the rotation of the second upper end cover 124, can rotation head 124-1 be set at the second upper end cover 124; Particularly, this rotation head 124-1 can be set to the structure of similar nut, is convenient to turn the second upper end cover 124 with specific purpose tool, guarantees the reliability that the second upper end cover 124 and the first upper end cover 114 coordinate.
Further, between the second upper end cover 124 and the first upper end cover 114, with or, between the second bottom end cover 125 and the first bottom end cover 115, be provided with gasket seal 14, so, can guarantee two sealings between filter core, avoid gas to enter after filter core 10, through the second filter core 12, do not filter and just enter the first filter core 11 filtrations, can further reduce the operating load of the first filter core 11, extend its service life and replacement cycle.
On this basis, on the first upper end cover 114, the second upper end cover 124, the first bottom end cover 115 and the second bottom end cover 125, be also respectively arranged with groove 13; So, the two ends of the first inner frame 111, the first filter medium 112 and the first outer skeleton 113 of the first filter core 11 are placed in respectively in the groove 13 of the first upper end cover 114 and the first bottom end cover 115; The first inner frame 121 of the second filter core 12 and the two ends of the second filter medium 122 are placed in respectively in the groove 13 of the second upper end cover 124 and the second bottom end cover 125, can understand in conjunction with Fig. 6, so arrange, improved steadiness and the reliability of the first filter core 11 and the second filter core 12.
Further, the second filter medium 122 is made as pleating filter media, particularly, can adopt organic fiber woven cloths or Nomex cloth to make, its concrete structure can be understood in conjunction with Fig. 5, so arranges, increased the active area of the second filter medium 122, can improve the pollutant holding capability of 122 pairs of solid impurities of the second filter medium, thereby extend the service life of the second filter core 12, further save operating cost.
In the various embodiments described above, can be different according to operating mode, select suitable material to manufacture each parts of filter core 10.Wherein, the end cap of filter core 10 can adopt the metal materials such as steel, aluminium as required, or the organic material such as plastics, polyurathamc is made; Skeleton can adopt the materials such as stainless steel, aluminium or polypropylene to make.
Compare with the Coalescence filter core of traditional coalescing filter, the filter core that the utility model provides is integrated the second cartridge combination of the first filter core of filter liquide impurity and filtration solid impurity, by the solid impurity in the second filter element filtering gas, reduce the operating load of the first filter core, thereby extend the service life of filter core; The manufacturing cost recruitment of the filter core that the utility model provides can be controlled in 30%, considers filter core service life and the market price, and the filter core that the utility model provides can effectively reduce production run cost more than 20%.
Please refer to Fig. 9 and Figure 10, Fig. 9 is the pressure drop comparison diagram of Coalescence filter core in filter core that under a kind of operating mode, the utility model provides and prior art; Figure 10 is the filter efficiency comparison diagram of Coalescence filter core in filter core that under a kind of operating mode, the utility model provides and prior art.
This kind of operating mode is: the cartridge surface rate of filtration is 0.1m/s, and filter core entrance concentration of liquid drops is 10g/m
3, the meta particle diameter 20 μ m of filter core entrance drop.
Here it is to be noted, coalescing filter is mainly used to the fine droplets in filtering gas, but at the trial, fine droplets is difficult for obtaining, and can increase test period and experimentation cost, so the particle diameter of drop is relatively large, but under equal operating mode, be enough to compare the quality of two kinds of filter cores here.
In Fig. 9, P1 and P1 ' represent respectively filter core and the Coalescence filter core of the prior art that the utility model provides, increase with cartridge surface drop cumulant, the change procedure of pressure drop, can find out, it is shorter that the filter core that the utility model provides reaches the time of stable state pressure drop, the strainability that shows the filter core that the utility model provides is better, although its stable state pressure drop is compared and has been increased 20% with the stable state pressure drop of Coalescence filter core in prior art, but for gases at high pressure, the pressure drop of appropriateness increases its impact little, consider, the strainability of the filter core that the utility model provides is better.
In Figure 10, S1 and S1 ' represent respectively filter core and the Coalescence filter core of the prior art that the utility model provides, accumulation filter efficiency during different size droplet diameter, can find out, the filter efficiency integral body of the filter core that the utility model provides is better than Coalescence filter core of the prior art, especially for particle diameter, is less than 2 μ m drop filter effects obvious.
The utility model also provides a kind of coalescing filter, comprises sleeve and is located at the filter core in described sleeve, and described filter core is the filter core described in above-mentioned arbitrary embodiment.
Because above-mentioned filter core has above-mentioned technique effect, so comprise that the coalescing filter of this filter core also has corresponding technique effect, repeats no more here.
Above coalescing filter provided by the utility model and filter core thereof are described in detail.Applied specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (10)
1. a filter core for coalescing filter, comprises first filter core with inner chamber, and the liquid impurity for filtering gas, is characterized in that, also comprises second filter core with filter chamber, for the solid impurity of filtering gas; Described the second filter core is flush-mounted in described the first filter core.
2. filter core as claimed in claim 1, is characterized in that, described the second filter core comprises having the second inner frame of filter chamber and the second filter medium that suit is fixed on described the second inner frame, and both two ends are installed with respectively the second upper end cover and the second bottom end cover; Described the second upper end cover is connected with the first upper end cover of described the first filter core, and the upper end of filter chamber described in shutoff, and described the second bottom end cover is connected with the first bottom end cover of described the first filter core, and has the through hole that is communicated with described filter chamber.
3. filter core as claimed in claim 2, is characterized in that, described the first filter core and described the second filter core removably connect.
4. filter core as claimed in claim 3, is characterized in that, upper end cover and the bottom end cover of described the second filter core, described the first filter core removably connect respectively.
5. filter core as claimed in claim 4, is characterized in that, described the second upper end cover and described the first upper end cover are threaded connection, described the second bottom end cover and described the first bottom end cover clamping.
6. filter core as claimed in claim 5, is characterized in that, between described the second upper end cover and described the first upper end cover, and or, between described the second bottom end cover and described the first bottom end cover, be provided with gasket seal.
7. filter core as claimed in claim 5, is characterized in that, described the second upper end cover is provided with rotation head.
8. filter core as claimed in claim 2, is characterized in that, described the second filter medium is pleating filter media.
9. the filter core as described in claim 1 to 8 any one, is characterized in that, between described the second filter core and described the first filter core, has gap.
10. a coalescing filter, comprises sleeve and is located at the filter core in described sleeve, and it is characterized in that, described filter core is the filter core as described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320591903.2U CN203484002U (en) | 2013-09-24 | 2013-09-24 | Coalescent filter and filter element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320591903.2U CN203484002U (en) | 2013-09-24 | 2013-09-24 | Coalescent filter and filter element |
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| Publication Number | Publication Date |
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| CN203484002U true CN203484002U (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320591903.2U Withdrawn - After Issue CN203484002U (en) | 2013-09-24 | 2013-09-24 | Coalescent filter and filter element |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463894A (en) * | 2013-09-24 | 2013-12-25 | 中联煤层气有限责任公司 | Coalescent filter and filter element thereof |
| CN104533381A (en) * | 2014-12-31 | 2015-04-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Gas-liquid separation device for drilling polishing bridge plug flowback process of natural gas well |
| CN105597451A (en) * | 2016-01-31 | 2016-05-25 | 杭州卡丽智能科技股份有限公司 | Air filter device |
| CN105999806A (en) * | 2016-06-29 | 2016-10-12 | 胡振强 | Easily cleaned filtering type water purifier |
| CN106215570A (en) * | 2016-09-10 | 2016-12-14 | 天津大学 | A kind of superposition type combination air filter |
| CN108159780A (en) * | 2017-12-18 | 2018-06-15 | 四会市华通金属筛网制品有限公司 | Filter screen applied to industry |
| CN108211462A (en) * | 2017-12-18 | 2018-06-29 | 四会市华通金属筛网制品有限公司 | The industrial sieve of long lifespan |
| CN111643990A (en) * | 2015-06-08 | 2020-09-11 | 美国圣戈班性能塑料公司 | Filter cartridge assembly |
-
2013
- 2013-09-24 CN CN201320591903.2U patent/CN203484002U/en not_active Withdrawn - After Issue
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463894A (en) * | 2013-09-24 | 2013-12-25 | 中联煤层气有限责任公司 | Coalescent filter and filter element thereof |
| CN103463894B (en) * | 2013-09-24 | 2015-10-21 | 中联煤层气有限责任公司 | Coalescing filter and filter core thereof |
| CN104533381A (en) * | 2014-12-31 | 2015-04-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Gas-liquid separation device for drilling polishing bridge plug flowback process of natural gas well |
| CN104533381B (en) * | 2014-12-31 | 2017-05-10 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Gas-liquid separation device for drilling polishing bridge plug flowback process of natural gas well |
| CN111643990A (en) * | 2015-06-08 | 2020-09-11 | 美国圣戈班性能塑料公司 | Filter cartridge assembly |
| CN111643990B (en) * | 2015-06-08 | 2022-08-26 | 美国圣戈班性能塑料公司 | Filter cartridge assembly |
| CN105597451A (en) * | 2016-01-31 | 2016-05-25 | 杭州卡丽智能科技股份有限公司 | Air filter device |
| CN105999806A (en) * | 2016-06-29 | 2016-10-12 | 胡振强 | Easily cleaned filtering type water purifier |
| CN105999806B (en) * | 2016-06-29 | 2017-11-21 | 新昌县羽林街道鑫博机械厂 | Easy cleaning Water filting purifier |
| CN106215570A (en) * | 2016-09-10 | 2016-12-14 | 天津大学 | A kind of superposition type combination air filter |
| CN108159780A (en) * | 2017-12-18 | 2018-06-15 | 四会市华通金属筛网制品有限公司 | Filter screen applied to industry |
| CN108211462A (en) * | 2017-12-18 | 2018-06-29 | 四会市华通金属筛网制品有限公司 | The industrial sieve of long lifespan |
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