CN114687894B - A self-cleaning air filter - Google Patents
A self-cleaning air filterInfo
- Publication number
- CN114687894B CN114687894B CN202011609127.5A CN202011609127A CN114687894B CN 114687894 B CN114687894 B CN 114687894B CN 202011609127 A CN202011609127 A CN 202011609127A CN 114687894 B CN114687894 B CN 114687894B
- Authority
- CN
- China
- Prior art keywords
- filter element
- air
- self
- conical safety
- conical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
Classifications
-
- 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
- F02M35/02475—Air cleaners using filters, e.g. moistened characterised by the shape of the filter element
- F02M35/02483—Cylindrical, conical, oval, spherical or the like filter elements; wounded filter elements
-
- 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
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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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
本发明涉及一种自清洁空气滤清器，包括壳体(1)、滤芯和反吹装置，滤芯设置在壳体(1)内，反吹装置的出气端伸入滤芯，所述的滤芯包括主滤芯(2)和锥形安全滤芯(3)，锥形安全滤芯(3)设置在主滤芯(2)内侧。与现有技术相比，本发明具有反吹效率高，安全性好，结构简单，拆卸方便等优点。
The present invention relates to a self-cleaning air filter, comprising a housing (1), a filter element, and a back-blowing device. The filter element is arranged in the housing (1), and the air outlet end of the back-blowing device extends into the filter element. The filter element comprises a main filter element (2) and a conical safety filter element (3), and the conical safety filter element (3) is arranged inside the main filter element (2). Compared with the prior art, the present invention has the advantages of high back-blowing efficiency, good safety, simple structure, and easy disassembly.
Description
Technical Field
The invention relates to the technical field of air filters, in particular to a self-cleaning air filter.
Background
The air cleaner is mainly used for filtering dust and impurities in air, provides clean air for an engine, reduces abrasion of the engine, and for equipment such as vehicles, engineering machinery and the like working in a high-dust environment, a filter element of the air cleaner can absorb a large amount of dust to cause resistance to rise after being used for a period of time, at the moment, a main filter element can be removed by an end user, dust on the surface of the air filter element is cleaned in a manual reverse blowing mode, a large amount of dust can be generated in the environment by the manual mode, health of operators is endangered, and the filter element is damaged easily due to improper operation, and the engine is damaged, so that the demand for a self-cleaning air filter system is increasingly generated in the market.
The utility model patent CN211777761U discloses a self-cleaning air filter, which comprises a shell, a closed air chamber, a main filter element, a safety filter element, a pulse valve and a controller, wherein the air filter further comprises an electric pumping device and a check valve, the electric pumping device is connected to a vehicle-mounted storage battery or an engine for supplying power to the electric pumping device, an air outlet of the electric pumping device is connected to the closed air chamber through a conduit, the check valve is arranged on the conduit connected with the air outlet of the electric pumping device and the sealed air chamber, the check valve has the function of one-way conduction, only compressed air is allowed to enter the closed air chamber by the pumping device, but compressed air is not allowed to flow back to the electric pumping device from the closed air chamber, a reliable air source can be provided for a vehicle without an air source, and meanwhile, the compression range, the back blowing time and the back blowing times of the compressed air for back blowing the filter element can be accurately controlled, and the self-cleaning effect and the service life of the filter element are greatly improved. However, the exposed part of the safety filter element exceeding the guide pipeline is overlong, and more back-blowing gas is easy to enter the safety filter element again in the back-blowing process, but flows out along the direction of the main filter element of the back-blowing net from inside to outside, so that the integral back-blowing effect is affected. And the back-flushing device and the air filter are integrally designed, so that the back-flushing device is not beneficial to selecting and matching the requirements of the back-flushing device on whether the back-flushing device is required or not under other application working conditions.
Disclosure of Invention
The invention aims to provide a self-cleaning air filter which has the advantages of high back blowing efficiency, good safety, simple structure and convenient disassembly.
The self-cleaning air filter comprises a shell, a filter element and a back blowing device, wherein the filter element is arranged in the shell, the air outlet end of the back blowing device extends into the filter element, the filter element comprises a main filter element and a conical safety filter element, and the conical safety filter element is arranged on the inner side of the main filter element. The conical structure can facilitate the installation and disassembly maintenance of the conical safety filter element, and an included angle is formed between the conical safety filter element and air flow entering the inner side of the main filter element during normal operation, so that the air inlet resistance of the safety filter element is reduced, the air filtered by the main filter element efficiently passes through the side wall of the safety filter element, and flows out from the long diameter end after being further filtered.
Further, the main filter element is an annular filter element, two ends of the conical safety filter element are provided with openings, namely a long-diameter end and a short-diameter end, the long-diameter end is communicated with a connecting pipeline outside the shell, and the short-diameter end is positioned in the main filter element.
The ratio of the radius of the long diameter end to the radius of the short diameter end is 1-1.3:1, and the length of the conical safety filter element extending into the main filter element is 30% -70% of the length of the main filter element, preferably 30% -60%.
The conical safety filter element is internally provided with a horn-shaped air injection flaring, the inlet end of the air injection flaring is communicated with the air outlet end of the back blowing device, and the outlet end of the air injection flaring is positioned at the short-diameter end of the conical safety filter element.
The ratio of the radius of the inlet end to the radius of the outlet end of the jet flaring is 1:3-5, and a sealing gasket is arranged at the joint of the inlet end of the jet flaring and the air outlet end of the back blowing device. After the air injection flaring is designed in an aerodynamic optimization mode, the diffusion of the back-blowing air flow can be effectively guided, the air flow speed of the back-blowing air flow when the back-blowing air flow blows to the inner surface of the main filter element is improved, and the back-blowing effect is improved.
The back blowing device comprises a pressure air tank and an air duct connected with the air outlet end of the pressure air tank, and the outlet end of the air duct is connected to the inside of the conical safety filter element.
Further, the pressure air tank is provided with a pressure regulating valve and an exhaust valve, and the air guide pipe is provided with an air release valve.
The shell is provided with a tangential air inlet, an air outlet and a dust exhaust port, the tangential air inlet and the air outlet are arranged on two sides of the shell, the central axes of the main filter element and the conical safety filter element are mutually perpendicular, the central axes of the air outlet and the main filter element are coaxially arranged, the central axes of the air outlet and the conical safety filter element are coincident, and the opening direction of the dust exhaust port is opposite to that of the tangential air inlet. Aiming at the situation that a large amount of dust is deposited in the shell after the self-cleaning system is back-blown, many air filters in the market are provided with additional dust discharging devices, even the arrangement and the installation of the air filters are limited, the system cost and the use flexibility are greatly increased, and the self-cleaning air filter disclosed by the invention adopts a tangential air inlet structure. When the air filter works normally, cyclone airflow can be generated in the shell, so that after back blowing, dust falling into the shell after back blowing can be effectively brought to the dust discharge port to be discharged through the cyclone airflow in the air filter when the air filter works normally again, and dust discharge can be completed without an additional dust discharge device.
The ratio of the tangential air inlet to the air outlet to the inner diameter of the dust exhaust port is 4-6:4-6:1, and the dust exhaust port is provided with a dust exhaust valve.
The conical safety filter element is internally provided with a supporting frame, and the supporting frame plays a role in supporting and reinforcing the conical safety filter element and the structure of the internal jet flaring of the conical safety filter element. The conical safety filter element is clamped in the air outlet, and part of the conical safety filter element extends into the shell, so that the conical safety filter element is convenient to install and detach.
The working principle of the self-cleaning air filter of the invention is as follows:
and in the normal working stage, when the air filter works normally, the air filter is used as a part of an air inlet system of the engine to filter and collect dust.
And in the inflation stage, an inflation port of the pressure air tank is connected to an air compressor end at the vehicle side, and the vehicle continuously inflates the pressure air tank, and stops and maintains pressure after reaching the pressure set by the pressure regulating valve.
And in the blowing stage, the dust holding capacity of the air filter is increased, the system resistance is gradually increased, when the alarm pressure is reached and the filter element cleaning is prompted, the engine is shut down or enters an idle state, a control device is used for opening a release valve, gas in the pressure gas tank enters the air filter through a gas guide pipe and penetrates through the main filter element, and the dust on the dirty side surface of the main filter element is blown off to be taken away, so that the self-cleaning process is completed.
And in the ash discharging stage, the engine reenters the working state under the rated flow, and the tangential rotating airflow in the air filter brings the dust which falls into the shell after self-cleaning into the dust discharging valve and is discharged by the dust discharging valve under the normal working state.
Compared with the prior art, the invention has the following advantages:
1. The invention uses the conical safety filter element, can effectively avoid the foreign matters in the back-blowing air source and the foreign matters outside the main filter element from entering the engine when being damaged, improves the safety, has a conical structure which is convenient to mount and dismount, and can obviously reduce the resistance value generated by the air filter when the air filter works normally;
2. according to the invention, through the design of the air injection flaring, the diffusion of the back-blowing air flow can be effectively guided, the air flow velocity when the back-blowing air flow blows to the inner surface of the main filter element is improved, and the back-blowing effect is enhanced;
3. According to the invention, through the positions and structural design of the tangential air inlet, the air outlet and the dust discharge port, when the air filter works normally, cyclone air flow can be generated in the shell, dust in the shell is discharged from the dust discharge port, an additional dust discharge device is not needed, the structure is simpler, and the cost is lower;
4. the invention ensures that the back blowing process is precisely controllable by the design of the pressure gas tank, the pressure regulating valve, the exhaust valve and the air release valve, and improves the back blowing efficiency and the safety.
Drawings
FIG. 1 is a schematic view of a self-cleaning air cleaner of the present invention;
in the figure, the device comprises a 1-shell, a 11-tangential air inlet, a 12-air outlet, a 13-dust discharge port, a 131-dust discharge valve, a 2-main filter element, a 3-conical safety filter element, a 31-long diameter end, a 32-short diameter end, a 33-air injection flaring, a 331-sealing gasket, a 34-support frame, a 4-connecting pipeline, a 5-pressure air tank, a 51-pressure regulating valve, a 52-exhaust valve, a 6-air guide pipe and a 61-exhaust valve.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The following examples are given by way of illustration of detailed embodiments and specific procedures based on the technical scheme of the present invention, but the scope of the present invention is not limited to the following examples.
Example 1
A self-cleaning air filter is shown in fig. 1, and comprises a shell 1, a main filter element 2, a conical safety filter element 3, a pressure air tank 5 and an air duct 6, wherein a tangential air inlet 11, an air outlet 12 and a dust exhaust port 13 are arranged on the shell 1, the tangential air inlet 11 is arranged at the top of the shell 1, the air outlet 12 is arranged on one side of the shell 1 adjacent to the tangential air inlet 11, and central axes of the tangential air inlet 11 and the air outlet 12 are mutually perpendicular. The dust discharge port 13 is provided at the bottom of the housing 1, and a dust discharge valve 131 is provided thereon. The main filter element 2 of annular structure is horizontally arranged in the shell 1, the conical safety filter element 3 is clamped in the air outlet 12 and stretches into the main filter element 2, the length of the conical safety filter element 3 stretching into the main filter element 2 is 30% -70% of the length of the main filter element 2, and the pressure air tank 5 blows back-blowing air into the inner side of the main filter element 2 through the air duct 6 to clean dust on the outer side of the main filter element 2.
Specifically, two ends of the conical safety filter element 3 are opened, a supporting frame 34 is arranged in the conical safety filter element to support the conical safety filter element, one side of the conical safety filter element 3 is provided with a long-diameter end 31, the other side of the conical safety filter element is provided with a short-diameter end 32, the long-diameter end 31 is communicated with a connecting pipeline 4 positioned outside the shell 1, the short-diameter end 32 is positioned in the main filter element 2, and the radius ratio of the long-diameter end 31 to the short-diameter end 32 is 1-1.3:1. The pressure gas tank 5 is provided with a pressure regulating valve 51 and an exhaust valve 52, the gas guide pipe 6 is provided with a gas release valve 61, the gas outlet end of the gas guide pipe 6 extends into the conical safety filter element 131 and is connected with a horn-shaped gas injection flaring 33, the inlet end of the gas injection flaring 33 is connected with the gas guide pipe 6, a sealing gasket 331 is arranged at the joint with the gas guide pipe 6, the outlet end of the gas injection flaring 33 is positioned at the short-diameter end 32 of the conical safety filter element 3, and blowback gas in the pressure gas tank 5 passes through the gas guide pipe 6 and then directly enters the inner side of the main filter element 2 through the outlet end of the gas injection flaring 33.
The working principle of the self-cleaning air filter of the embodiment is as follows:
and in the normal working stage, when the air filter works normally, the air filter is used as a part of an air inlet system of the engine to filter and collect dust.
In the inflation stage, an inflation port of the pressure air tank 5 is connected to an air compressor end at the vehicle side, and the vehicle continuously inflates the pressure air tank, and stops and maintains pressure after reaching the pressure set by the pressure regulating valve 51.
In the blowing stage, the dust holding capacity of the air filter is increased, the system resistance is gradually increased, when the alarm pressure is reached and the filter element cleaning is prompted, the engine is shut down or enters an idle state, a control device is used for opening a deflation valve 61, gas in the pressure gas tank 5 enters the air filter through a gas guide pipe 6 and penetrates through the main filter element 2, and dust on the dirty side surface of the main filter element 2 is blown off to be taken away, so that the self-cleaning process is completed.
And in the ash discharge stage, the engine reenters the working state under the rated flow, and the tangential rotating airflow in the air filter brings the dust which falls into the shell 1 after self-cleaning into the dust discharge valve 131, and is discharged by the dust discharge valve 131 under the normal working state.
The foregoing description of the embodiments is provided to facilitate the understanding and use thereof by those skilled in the art. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011609127.5A CN114687894B (en) | 2020-12-30 | 2020-12-30 | A self-cleaning air filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011609127.5A CN114687894B (en) | 2020-12-30 | 2020-12-30 | A self-cleaning air filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114687894A CN114687894A (en) | 2022-07-01 |
| CN114687894B true CN114687894B (en) | 2025-09-23 |
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ID=82132253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011609127.5A Active CN114687894B (en) | 2020-12-30 | 2020-12-30 | A self-cleaning air filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN114687894B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397318A (en) * | 2018-04-20 | 2018-08-14 | 上海邗越智能科技有限公司 | A kind of self-cleaning air filter |
| CN209354273U (en) * | 2018-12-19 | 2019-09-06 | 曼胡默尔滤清器（上海）有限公司 | Air filter system with self-cleaning function |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350151B (en) * | 2004-08-25 | 2015-11-25 | 唐纳森公司 | Air filter; Removable filter element and method |
| US8066791B2 (en) * | 2007-07-20 | 2011-11-29 | Donaldson Company, Inc. | Air cleaner arrangements with internal and external support for cartridge; components; and, methods |
| CN204267190U (en) * | 2014-11-28 | 2015-04-15 | 赵永胜 | The self-cleaning air filter device of a kind of Windspout back-blowing formula |
| CN204553002U (en) * | 2015-02-26 | 2015-08-12 | 天津市宇龙昊天汽车滤清器有限公司 | A kind of air-strainer |
| CN205569958U (en) * | 2016-01-05 | 2016-09-14 | 马勒技术投资(中国）有限公司 | General type safety filter core of truck |
| CN105649834A (en) * | 2016-03-02 | 2016-06-08 | 赵永胜 | Pneumatic flapping and air exhausting spraying self-cleaning type air filter |
| CN109578181B (en) * | 2019-01-28 | 2024-05-17 | 江苏函越智能科技有限公司 | Self-cleaning air filter and control system thereof |
| CN212027948U (en) * | 2020-03-19 | 2020-11-27 | 赵绍兴 | Air filter for vehicle |
-
2020
- 2020-12-30 CN CN202011609127.5A patent/CN114687894B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397318A (en) * | 2018-04-20 | 2018-08-14 | 上海邗越智能科技有限公司 | A kind of self-cleaning air filter |
| CN209354273U (en) * | 2018-12-19 | 2019-09-06 | 曼胡默尔滤清器（上海）有限公司 | Air filter system with self-cleaning function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114687894A (en) | 2022-07-01 |
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