CN112096544B - Empty filter assembly with dustproof filtering capability - Google Patents
Empty filter assembly with dustproof filtering capability Download PDFInfo
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- CN112096544B CN112096544B CN202011316940.3A CN202011316940A CN112096544B CN 112096544 B CN112096544 B CN 112096544B CN 202011316940 A CN202011316940 A CN 202011316940A CN 112096544 B CN112096544 B CN 112096544B
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- plate
- filter assembly
- filtering function
- air filter
- air
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/08—Air cleaners with means for removing dust, particles or liquids from cleaners; with means for indicating clogging; with by-pass means; Regeneration of cleaners
- F02M35/086—Dust removal by flushing, blasting, pulsating or aspirating flow, washing or the like; Mechanical dust removal, e.g. by using scrapers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/0201—Housings; Casings; Frame constructions; Lids; Manufacturing or assembling thereof
- F02M35/0202—Manufacturing or assembling; Materials for air cleaner housings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/0201—Housings; Casings; Frame constructions; Lids; Manufacturing or assembling thereof
- F02M35/0209—Housings; Casings; Frame constructions; Lids; Manufacturing or assembling thereof comprising flexible, resilient, movable or rotatable elements, e.g. with vibrating or contracting movements; Springs; Valves; Flaps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/0212—Multiple cleaners
- F02M35/0216—Multiple cleaners arranged in series, e.g. pre- and main filter in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/024—Air cleaners using filters, e.g. moistened
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/024—Air cleaners using filters, e.g. moistened
- F02M35/02416—Fixing, mounting, supporting or arranging filter elements; Filter element cartridges
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention relates to the technical field of air filters, and discloses an air filter assembly with a dustproof filtering function, which comprises a filter box, wherein a cover plate is arranged on the front surface of the filter box, a through hole is formed in the middle of the upper surface of the filter box, the middle of the through hole is connected with the upper part of a filter plate in a clamping mode, a connecting seat is arranged on the right side of the upper surface of the filter box, a connecting pipe is arranged on the upper part of the connecting seat, a supporting plate is arranged on the upper part of the connecting pipe, the upper part of the supporting plate is connected with the lower part of a filter barrel in a clamping mode, a fixing support is arranged at the bottom of the filter barrel, the middle of the fixing support is rotatably connected with a rotating seat, the upper part of the rotating seat is connected with the lower end. The invention is suitable for the air filter assembly with the dustproof filtering function, and the scraper blade always cleans the surface of the conical plate in the using process of the device, thereby realizing the self-cleaning effect.
Description
Technical Field
The invention relates to the technical field of air filters, in particular to an air filter assembly with a dustproof filtering function.
Background
An air filter is usually arranged in an air inlet system of the internal combustion engine, and air filtered by the air filter is conveyed into a combustion chamber of the internal combustion engine through a carburetor, so that impurities in the air are prevented from damaging moving parts in the combustion chamber, and the service life of the internal combustion engine is further prevented from being influenced. Most of the existing air filters are used for filtering once, dust in air can not be filtered well, and particularly in an environment with a large amount of dust in air, the air can not meet the requirement of air inlet quality of an internal combustion engine; a few of existing air filters for secondary filtration are complex in structure and inconvenient to clean.
Chinese patent (publication number: CN 205101147U) discloses a diesel engine air filter with a filter component, which comprises a lower flange arranged at the bottom of an air outlet pipe of the air filter and an upper flange arranged at the top of an air inlet pipe, wherein the filter component is arranged between the lower flange and the upper flange. Owing to set up filter unit, on the support seat that drops by the vibration or the cast iron class directly drops on filter unit, carried out effectual isolation between will dropping thing and the intake pipe, inside the dropping thing can not be inhaled the machine again, carried out effectual protection to the valve of machine or piston, satisfied the demand to the continuous operation of machine, but the device's cleanness still is comparatively inconvenient, consequently need improve the device.
Disclosure of Invention
The invention provides an air filter assembly with a dustproof filtering function, and solves the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
an air filter assembly with dustproof filtering function comprises a filter box, a cover plate is arranged on the front surface of the filter box, a through hole is arranged in the middle of the upper surface of the filter box, the middle part of the through hole is clamped with the upper part of a filter plate, a connecting seat is arranged on the right side of the upper surface of the filter box, a connecting pipe is arranged on the upper part of the connecting seat, a supporting plate is arranged on the upper part of the connecting pipe, the upper part of the supporting plate is clamped with the lower part of the filter barrel, the bottom of the filter barrel is provided with a fixed support, the middle part of the fixed support is rotatably connected with a rotating seat, the upper part of the rotating seat is connected with the lower end of a rotating shaft, the middle part of the rotating shaft is provided with fan blades, the upper portion of pivot is equipped with the baffle, the outside joint conical plate of baffle, the position sliding connection sliding seat that leans on down in the upper end of pivot, the left and right sides of sliding seat rotates the upper end of joint support pole, and the upper surface of connecting the scraper blade is rotated to the lower extreme of bracing piece, be equipped with the spring between sliding seat and the baffle.
As a preferable technical scheme of the invention, a limiting plate is arranged at the upper end of the rotating shaft.
As a preferred technical scheme of the invention, clamping seats are arranged on the left side and the right side of the lower surface of the limiting plate, and the lower ends of the clamping seats are clamped with the supporting rod.
As a preferable technical scheme of the invention, a sliding groove is arranged on the left side of the upper part of the rotating shaft.
As a preferable technical scheme of the invention, a plug is arranged between the conical plate and the baffle plate.
As a preferable technical scheme of the invention, the outer side of the conical plate is provided with air holes.
As a preferable technical scheme of the invention, the bottom of the filter box is provided with a sealing gasket, and the sealing section is positioned right below the through hole.
As a preferred technical scheme of the invention, a sealing ring is arranged between the through hole and the filter plate.
As a preferable technical scheme of the invention, a pressure pump is arranged on the left side of the filter box, an air inlet pipe is arranged on the left side of the pressure pump, and an air pipe joint is arranged at the left end of the air inlet pipe.
As a preferred technical scheme of the invention, the rotating seat is clamped at the lower end of the rotating shaft.
The invention has the following advantages:
the air filter assembly with the dustproof filtering function is suitable for the air filter assembly with the dustproof filtering function, and the scraper which can rotate around the rotating shaft is arranged, so that the scraper can always clean the surface of the conical plate in the using process of the air filter assembly, the self-cleaning effect is realized, and in the cleaning process of the air filter assembly, the conical plate and the filter plate can be conveniently detached, so that the whole air filter assembly is convenient to clean, the using difficulty of the whole air filter assembly is reduced, and the air filter assembly is suitable for popularization and use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of an air filter assembly with a dustproof filtering function.
Fig. 2 is a schematic structural view of the inside of a filter box in an air filter assembly having a dustproof filtering function.
Fig. 3 is a front view of fig. 2.
FIG. 4 is a schematic view showing a filter plate of an air filter assembly having a dust-proof filtering function.
Fig. 5 is a schematic structural view of the inside of a filter vat in an air filter assembly with a dustproof filtering function.
Fig. 6 is a partially enlarged view of a in fig. 5.
Fig. 7 is a front view of fig. 5.
In the figure: 1. a filter box; 2. a connecting seat; 3. a connecting pipe; 4. a support plate; 5. a filter vat; 6. a gas pipe joint; 7. an air inlet pipe; 8. a cover plate; 9. a filter plate; 10. a through hole; 11. a gasket; 12. a pressure pump; 13. fixing a bracket; 14. a rotating seat; 15. a fan blade; 16. a rotating shaft; 17. a tapered plate; 18. air holes are formed; 19. a squeegee; 20. a support bar; 21. a baffle plate; 22. a plug; 23. a spring; 24. a sliding seat; 25. a chute; 26. a card holder; 27. a limiting plate; 28. and (5) sealing rings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1-7, an air filter assembly with dust-proof filtering function comprises a filter box 1, a cover plate 8 is arranged on the front surface of the filter box 1, the cover plate 8 is connected with the filter box 1 through screws, because the cleaning effect of the device is good, the interior of the filter box 1 does not need to be cleaned in the normal use process, only when the filter box 1 works for a long time, the cover plate 8 needs to be detached, the interior of the filter box 1 needs to be cleaned, a through hole 10 is arranged in the middle of the upper surface of the filter box 1, the middle of the through hole 10 is clamped with the upper part of a filter plate 9, a sealing gasket 11 is arranged at the bottom of the filter box 1, the sealing section is positioned right below the through hole 10, a sealing ring 28 is arranged between the through hole 10 and the filter plate 9, the sealing effect between the filter plate 9 and the filter box 1 can be improved through the sealing gasket 11 and the sealing ring 28, a connecting seat, connecting pipe 3 is equipped with on the upper portion of connecting seat 2, and the upper portion of connecting pipe 3 is equipped with layer board 4, the lower part of the upper portion joint filter vat 5 of layer board 4.
The bottom of the filter barrel 5 is provided with a fixed support 13, the middle part of the fixed support 13 is rotatably connected with a rotating seat 14, the upper part of the rotating seat 14 is connected with the lower end of a rotating shaft 16, the middle part of the rotating shaft 16 is provided with fan blades 15, the upper part of the rotating shaft 16 is provided with a baffle plate 21, the outer side of the baffle plate 21 is clamped with a conical plate 17, a plug 22 is arranged between the conical plate 17 and the baffle plate 21, the plug 22 is made of rubber materials, the sealing effect between the baffle plate 21 and the conical plate 17 is improved, the outer side of the conical plate 17 is provided with vent holes 18, the lower position of the upper end of the rotating shaft 16 is slidably connected with a sliding seat 24, the left side of the upper part of the rotating shaft 16 is provided with a sliding groove 25, the sliding seat 24 only can move up and down along the rotating shaft 16 by arranging the sliding groove 25, the lower end of the support rod 20 is rotatably connected with the upper surface of the scraper 19, a spring 23 is arranged between the sliding seat 24 and the baffle 21, a limit plate 27 is arranged at the upper end of the rotating shaft 16, clamping seats 26 are arranged on the left side and the right side of the lower surface of the limit plate 27, and the lower end of each clamping seat 26 is clamped with the support rod 20.
The left side of rose box 1 is equipped with force (forcing) pump 12, and the left side of force (forcing) pump 12 is equipped with intake pipe 7, and the left end of intake pipe 7 is equipped with air pipe connector 6. Because a plurality of filter plates 9 are arranged in the device, the resistance of the device is larger, and a pressure pump 12 is arranged in the device for improving the air inflow of the device, so that the negative pressure effect in the device is improved, and gas can pass through the device more quickly.
Example two
Referring to fig. 6, the other contents of the present embodiment are the same as those of the first embodiment, except that: the rotating base 14 is clamped with the lower end of the rotating shaft 16. Thereby make pivot 16 can break away from with rotating seat 14, because this device is when using, flabellum 15 can rotate under the effect of air current to at rotatory in-process, the fan can produce decurrent power, consequently this device can not worry pivot 16 and the breaking away from of rotating seat 14 at the in-process of work, consequently can set pivot 16 and rotating seat 14 into detachable connected mode, thereby make this device in the process of using, can directly take out flabellum 15 and pivot 16 from filter vat 5, be convenient for to the washing of flabellum 15.
In the implementation process of the invention, the device is connected with a gas using element needing gas through the gas pipe joint 6, at the moment, the device can be normally used, the gas enters the filter barrel 5 through the air holes 18 of the conical plate 17, enters the filter box 1 through the connecting pipe 3 and then enters the gas using unit through the gas inlet pipe 7, firstly, when the gas passes through the air holes 18 of the conical plate 17, part of impurities with larger particles in the gas can be blocked outside the conical plate 17, when the gas passes through the inside of the filter barrel 5, the gas drives the fan blades 15 to rotate, so that the rotating shaft 16 rotates, the rotating shaft 16 drives the scraping plate 19 to move on the conical plate 17, thereby scraping the impurities attached to the surface of the conical plate 17, realizing the self-cleaning effect, after the first filtration is completed, the gas enters the filter box 1 and after the filtration of the three filter plates 9, at this point the gas is ready for normal use.
After the device is used for a period of time, the whole device needs to be cleaned, the sliding seat 24 can slide downwards at the moment to separate the support rod 20 from the clamping seat 26 and rotate the support rod 20 upwards to enable the support rod 20 and the scraper 19 to be tightly attached to the outer side of the limiting plate 27, the conical plate 17 can be drawn out upwards at the moment, an opening in the middle of the conical plate 17 can just bypass the support rod 20 and the scraper 19, the conical plate 17 is directly separated from the filter barrel 5 and can be cleaned, fan blades 15 and the like in the filter barrel 5 can be cleaned, meanwhile, the filter plate 9 can be drawn out from the through hole 10 and cleaned, or the filter plate 9 is directly replaced by a new filter plate 9, and therefore the cleaning work of the whole device is achieved; the invention is suitable for an air filter assembly with dustproof filtering function, and the scraper 19 which can rotate around the rotating shaft 16 is arranged, so that the scraper 19 can always clean the surface of the conical plate 17 in the using process of the device, the self-cleaning effect is realized, and in the cleaning process of the device, the conical plate 17 and the filter plate 9 can be conveniently detached, so that the whole device is convenient to clean, the use difficulty of the whole device is reduced, and the air filter assembly is suitable for popularization and use.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. An air filter assembly with dustproof filtering function comprises a filter box (1), wherein a cover plate (8) is arranged on the front face of the filter box (1), a through hole (10) is formed in the middle of the upper surface of the filter box (1), the middle of the through hole (10) is connected with the upper portion of a filter plate (9) in a clamped mode, the air filter assembly is characterized in that a connecting seat (2) is arranged on the right side of the upper surface of the filter box (1), a connecting pipe (3) is arranged on the upper portion of the connecting seat (2), a supporting plate (4) is arranged on the upper portion of the connecting pipe (3), the upper portion of the supporting plate (4) is connected with the lower portion of a filter barrel (5) in a clamped mode, a fixing support (13) is arranged at the bottom of the filter barrel (5), a rotating seat (14) is rotatably connected to the middle of the fixing support (13), the upper portion of the rotating seat (14) is connected, the outside joint conical plate (17) of baffle (21), position sliding connection sliding seat (24) that the upper end of pivot (16) leaned on down rotates the upper end of connecting support pole (20) in the left and right sides of sliding seat (24), and the upper surface of connecting scraper blade (19) is rotated to the lower extreme of bracing piece (20), be equipped with spring (23) between sliding seat (24) and baffle (21).
2. The air filter assembly with dustproof and filtering functions of claim 1, wherein the upper end of the rotating shaft (16) is provided with a limiting plate (27).
3. The air filter assembly with the dustproof filtering function according to claim 2, wherein clamping seats (26) are arranged on the left and right sides of the lower surface of the limiting plate (27), and the lower ends of the clamping seats (26) are clamped with the support rod (20).
4. The air filter assembly with dustproof filtering function according to claim 1, wherein the upper left side of the rotating shaft (16) is provided with a sliding groove (25).
5. The air filter assembly with the dustproof filtering function of claim 1, wherein a plug (22) is arranged between the conical plate (17) and the baffle plate (21).
6. The air filter assembly with dustproof filtering function according to claim 1, wherein the outside of the conical plate (17) is provided with the ventilation holes (18).
7. The air filter assembly with the dustproof filtering function according to claim 1, wherein the bottom of the filter box (1) is provided with a sealing gasket (11), and the sealing section is positioned right below the through hole (10).
8. An air filter assembly with dust-proof filtering function according to claim 7, characterized in that a sealing ring (28) is arranged between the through hole (10) and the filter plate (9).
9. The air filter assembly with the dustproof filtering function according to claim 1, wherein a pressure pump (12) is arranged on the left side of the filter box (1), an air inlet pipe (7) is arranged on the left side of the pressure pump (12), and an air pipe connector (6) is arranged at the left end of the air inlet pipe (7).
10. The air filter assembly with dust-proof filtering function according to claim 1, wherein the rotating seat (14) is clamped with the lower end of the rotating shaft (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011316940.3A CN112096544B (en) | 2020-11-23 | 2020-11-23 | Empty filter assembly with dustproof filtering capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011316940.3A CN112096544B (en) | 2020-11-23 | 2020-11-23 | Empty filter assembly with dustproof filtering capability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112096544A CN112096544A (en) | 2020-12-18 |
| CN112096544B true CN112096544B (en) | 2021-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011316940.3A Active CN112096544B (en) | 2020-11-23 | 2020-11-23 | Empty filter assembly with dustproof filtering capability |
Country Status (1)
| Country | Link |
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| CN (1) | CN112096544B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594042B (en) * | 2021-03-01 | 2021-06-04 | 山东艾泰克环保科技股份有限公司 | SCR (selective catalytic reduction) box for post-treatment of engine |
| CN115182834B (en) * | 2021-04-02 | 2023-09-01 | 广州汽车集团股份有限公司 | Air cleaner, engine and car |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0305575A1 (en) * | 1987-09-03 | 1989-03-08 | Bauko Baukooperation Gmbh | Filtering apparatus |
| CN202237441U (en) * | 2011-07-29 | 2012-05-30 | 天津市瑞福驰化工有限公司 | Filter |
| CN111701351A (en) * | 2020-07-09 | 2020-09-25 | 芜湖中燃城市燃气发展有限公司 | Anti-blocking type gas impurity filtering equipment and method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001263042A (en) * | 2000-03-15 | 2001-09-26 | Koji Iizuka | Exhaust gas particulate removing device |
| CN208115340U (en) * | 2018-02-01 | 2018-11-20 | 曲阳县鼎琨环保设备有限公司 | A kind of smoke duster |
| CN108561212B (en) * | 2018-03-06 | 2019-12-10 | 瑞立集团瑞安汽车零部件有限公司 | Automobile exhaust treatment device |
| CN209378575U (en) * | 2018-11-21 | 2019-09-13 | 江西司太立制药有限公司 | A kind of medicine intermediate filter device |
| CN209278030U (en) * | 2018-11-22 | 2019-08-20 | 沪东重机有限公司 | A kind of diesel air air filter |
| CN210448394U (en) * | 2019-07-05 | 2020-05-05 | 陈春愉 | Coal dust collecting equipment for coal mine construction site |
| CN110449426B (en) * | 2019-09-12 | 2024-04-05 | 毅康科技有限公司 | Sewage treatment pond silt clearance recovery unit |
| CN211589397U (en) * | 2019-12-17 | 2020-09-29 | 杭州乐守科技有限公司 | Scrap collecting device for bolt bar sawing |
| CN211960426U (en) * | 2020-04-17 | 2020-11-20 | 广州市新茵园林绿化管理有限公司 | Ecological rainwater of gardens is given and is arranged system |
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2020
- 2020-11-23 CN CN202011316940.3A patent/CN112096544B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0305575A1 (en) * | 1987-09-03 | 1989-03-08 | Bauko Baukooperation Gmbh | Filtering apparatus |
| CN202237441U (en) * | 2011-07-29 | 2012-05-30 | 天津市瑞福驰化工有限公司 | Filter |
| CN111701351A (en) * | 2020-07-09 | 2020-09-25 | 芜湖中燃城市燃气发展有限公司 | Anti-blocking type gas impurity filtering equipment and method |
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| CN112096544A (en) | 2020-12-18 |
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| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: An air filter assembly with dust-proof filtering function Effective date of registration: 20211220 Granted publication date: 20210209 Pledgee: Shandong Zhucheng rural commercial bank Limited by Share Ltd. Pledgor: SHANDONG ATK ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Registration number: Y2021980015754 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230109 Granted publication date: 20210209 Pledgee: Shandong Zhucheng rural commercial bank Limited by Share Ltd. Pledgor: SHANDONG ATK ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Registration number: Y2021980015754 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |