CN114922752A - Prevent blockking up long-life non-maintaining air cleaner - Google Patents

Prevent blockking up long-life non-maintaining air cleaner Download PDF

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Publication number
CN114922752A
CN114922752A CN202210531412.2A CN202210531412A CN114922752A CN 114922752 A CN114922752 A CN 114922752A CN 202210531412 A CN202210531412 A CN 202210531412A CN 114922752 A CN114922752 A CN 114922752A
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China
Prior art keywords
air
dust
filter
filter element
cyclone tube
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Pending
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CN202210531412.2A
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Chinese (zh)
Inventor
李明华
赵凯
吕志鸿
徐洪斌
陈克新
郭林福
钟凤磊
乔梦华
李继新
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China North Vehicle Research Institute
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China North Vehicle Research Institute
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Priority to CN202210531412.2A priority Critical patent/CN114922752A/en
Publication of CN114922752A publication Critical patent/CN114922752A/en
Pending legal-status Critical Current

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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
    • F02M35/022—Air cleaners acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls
    • F02M35/0223—Air cleaners acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls by centrifugal forces, e.g. cyclones
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust

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  • 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

The invention belongs to the technical field of engine air inlet systems, and particularly relates to an anti-blocking long-life maintenance-free air filter which comprises an air inlet cover, a cyclone tube type pre-filter, a dust pump, a secondary filter shell, an air filter element, a back-flushing valve, a compressed air tank, a pulse controller, a safety filter element, an air outlet pipe and a compressed air processor; this air cleaner is through improving prefilter structure and throughput, through the structure of optimizing the air cleaner assembly, possesses reverse clearance air filter's structure, through in good time clearance air filter realized air cleaner assembly low resistance, avoided air filter in use's unusual jam, reduced and maintained filter core maintenance number of times and maintenance cost, promoted the operating efficiency and the rate of utilization of vehicle.

Description

Prevent blockking up long-life non-maintaining air cleaner
Technical Field
The invention belongs to the technical field of engine air inlet systems, and particularly relates to an anti-blocking long-life maintenance-free air filter.
Background
Special machines represented by agricultural machines, including mining operation machines, disturb ground dust, crop branches and leaves and the like during operation, so that the content of dust impurities in air near the agricultural machines is very large, and in actual use, for example, a cotton harvester needs to clean an air filter element within 2 hours. Therefore, the development of an anti-blocking long-life maintenance-free air filter used for vehicles and engineering machinery working in a high-dust environment is urgently needed, so that the problem of frequent blockage of the air filter is solved.
Disclosure of Invention
Technical problem to be solved
The technical problem to be solved by the invention is as follows: how to provide an anti-clogging long-life maintenance-free air filter.
(II) technical scheme
In order to solve the technical problem, the invention provides an anti-blocking long-life maintenance-free air filter, which comprises: the device comprises an air inlet cover 1, a cyclone tube type prefilter 2, a dust pump 3, a secondary filter shell 4, an air filter element 5, a blowback valve 7, a compressed air tank 8, a pulse controller 9, a safety filter element 10, an air outlet pipe 11 and a compressed air processor 13;
the cyclone tube type prefilter 2 is connected and arranged on the side surface of the secondary filter shell 4, and the air inlet cover 1 is arranged at the inlet of the cyclone tube type prefilter 2; the dust pump 3 is connected with the cyclone tube type prefilter 2 through a dust pumping pipe;
a filter cavity and a gas collecting cavity 6 are arranged in the secondary filter shell 4, the filter cavity is positioned at the lower part, the gas collecting cavity 6 is positioned at the upper part, and a horizontal partition plate is arranged between the filter cavity and the gas collecting cavity 6;
the air filter element 5 is arranged in the filter cavity, and the air filter element 5 is vertically arranged at the lower end of the horizontal partition plate in the filter cavity;
a blowback valve 7 and a compressed air tank 8 are arranged in a gas collecting cavity 6 of the secondary filter shell 4, an inlet of the blowback valve 7 is connected to the compressed air tank 8, and an outlet of the blowback valve 7 is opposite to an outlet of the air filter element 5 through an opening on the horizontal clapboard;
the inlet of the compressed air tank 8 is connected with the compressed air processor 13, and the compressed air processor 13 is connected to the vehicle-mounted compressor and provides an air source for the compressed air tank 8;
the back flushing valve 7 is connected to a pulse controller 9, a diaphragm is arranged in the back flushing valve 7, and the pulse controller 9 controls the diaphragm to lift or fall;
an air outlet pipe 11 is arranged on the outer side surface of the air collection cavity 6, and the safe filter element 10 is arranged at an inlet, which is opposite to the air outlet pipe 11, in the air collection cavity 6.
Wherein, air filter 5 is equipped with two, two air filter 5 mutual parallel arrangement, two air filter 5 all set up perpendicularly on horizontal baffle.
Wherein, blowback valve 7 is provided with two, two blowback valves 7 one-to-one correspond two air filter 5.
And a nozzle is arranged at the outlet of the back flushing valve 7 and is a V-shaped nozzle so as to increase the gas outflow pressure.
Wherein, the two blowback valves 7 are respectively connected to the pulse controller 9 and are cooperatively controlled by the pulse controller 9.
Wherein the pulse controller (9) is connected with a vehicle-mounted 24V power supply.
The cyclone tube type prefilter 2 adopts a large cyclone tube with an inner diameter of 70mm and a total length of about 200mm, and realizes a single-tube flow of 150m 3 /h－220m 3 The index of the resistance is about 1.2kPa, and the efficiency is 90 percent.
Wherein, a plurality of swirl tubes are arranged in the swirl tube type prefilter 2, and the air flow of a single swirl tube is 150m 3 /h－220m 3 Between/h, the pre-filter resistance is constructed between 1.0-1.5kPa, and the efficiency is about 90 percent.
Wherein, the specific parameter requirements of the dust pump 3 are as follows: 24V direct current, the dust extraction static pressure is not less than 1.2 times of the resistance of the front end air inlet cover 1 and the cyclone tube type prefilter 2, and the dust extraction flow is not less than 10% of the air filtration flow, so that the dust extraction pump 3 can discharge the dust separated by the cyclone tube type prefilter 2.
Wherein, the air filter element 5 is a cylindrical air filter element.
The bottom of the air filter shell 4 is connected with a bottom cover 12 through a wrench buckle and a zipper, and the air filter element 5 is convenient to maintain through the bottom cover 12 and is convenient to disassemble and assemble.
When the engine works, external dust-containing air is sucked from the air inlet cover 1 at the front end of the cyclone tube type prefilter 2, the dust-containing air enters the cyclone tube type prefilter 2 through the air inlet cover 1, the cyclone tube type prefilter 2 adopts a straight-through cyclone tube with a large-size anti-blocking structure to be matched with the dust pump 3 to pre-separate large particle dust in the dust-containing air, and the separated dust is discharged through the dust pump 3; a cylindrical air filter element 5 is arranged in a secondary filter shell 4 at the rear end of the cyclone tube type prefilter 2 and is vertically arranged in the secondary filter shell 4; clean air filtered by the air filter element 5 enters the air collecting cavity 6 of the secondary filter shell 4 and then is led to the engine from the air outlet pipe 11 through the safety filter element 10;
when the air filter works, the pulse controller 9 simultaneously starts the back blowing work, the pulse controller 9 controls the back blowing valve 7 to be opened once every certain time, namely, the diaphragm of the back blowing valve 7 is lifted once every certain time, so that the compressed air led from the vehicle-mounted air compressor passes through the compressed air processor 13 and then is led to the compressed air tank 8, and then is blown to the inside of the air filter element 5 through a back blowing channel formed after the diaphragm of the back blowing valve 7 is lifted, and the air filter element 5 is back blown to reversely blow off the dust deposited on the air filter element 5.
(III) advantageous effects
Compared with the prior art, the large-size axial-flow type cyclone tube prefilter is matched with a dust pump or waste gas injection dust pumping, the conventional cylindrical filter element is adopted for secondary filtration, and the technical measures of compressed air reverse cleaning are adopted for two circular filter elements in the secondary filtration shell, so that the filter elements can be maintained in real time while the large-size cyclone tube prefilter is matched with the circular filter elements to work, and the problems of blockage and short service life of the air filter are thoroughly solved.
Compared with the air filter adopted by the vehicle in the existing high-dust environment, the invention has the beneficial effects that the structure of the air filter assembly is optimized through improving the pre-filtering structure and the passing capacity, the structure for reversely cleaning the air filter element is provided, the low resistance of the air filter assembly is realized through timely cleaning the air filter element, the abnormal blockage of the air filter element in use is avoided, the maintenance times and the maintenance cost of the maintenance filter element are reduced, and the operating efficiency and the utilization rate of the vehicle are improved.
Drawings
Fig. 1 is a schematic diagram of a long-life maintenance-free air filter working process.
FIG. 2 is a schematic diagram of a long-life maintenance-free air back-flushing process.
FIG. 3 is a schematic view of a long life maintenance free air filter assembly.
FIG. 4 is an isometric view of an application of the long life maintenance-free air cleaner.
FIG. 5 is a left side view of an example long life maintenance-free air cleaner application.
FIG. 6 is a top cross-sectional view of an example long life maintenance-free air cleaner application.
Fig. 7 is a schematic structural view of a cyclone tube prefilter.
FIG. 8 is an outline view of a swirl tube.
FIG. 9 is a schematic diagram of a swirl tube prefilter application.
Detailed Description
In order to make the objects, contents, and advantages of the present invention more apparent, the following detailed description of the present invention will be made in conjunction with the accompanying drawings and examples.
In order to solve the above technical problem, the present invention provides an anti-clogging long-life maintenance-free air cleaner, as shown in fig. 1 to 9, comprising: the device comprises an air inlet cover 1, a cyclone tube type prefilter 2, a dust pump 3, a secondary filter shell 4, an air filter element 5, a blowback valve 7, a compressed air tank 8, a pulse controller 9, a safety filter element 10, an air outlet pipe 11 and a compressed air processor 13;
the cyclone tube type prefilter 2 is connected and arranged on the side surface of the second-stage filter shell 4, and the air inlet cover 1 is arranged at the inlet of the cyclone tube type prefilter 2; the dust pump 3 is connected with the cyclone tube type prefilter 2 through a dust pumping pipe;
a filter cavity and a gas collecting cavity 6 are arranged in the secondary filter shell 4, the filter cavity is positioned at the lower part, the gas collecting cavity 6 is positioned at the upper part, and a horizontal partition plate is arranged between the filter cavity and the gas collecting cavity 6;
the air filter element 5 is arranged in the filter cavity, and the air filter element 5 is vertically arranged at the lower end of the horizontal partition plate in the filter cavity;
a blowback valve 7 and a compressed air tank 8 are arranged in a gas collecting cavity 6 of the secondary filter shell 4, an inlet of the blowback valve 7 is connected to the compressed air tank 8, and an outlet of the blowback valve 7 is opposite to an outlet of the air filter element 5 through an opening on the horizontal clapboard;
the inlet of the compressed air tank 8 is connected with the compressed air processor 13, and the compressed air processor 13 is connected to the vehicle-mounted compressor and provides an air source for the compressed air tank 8;
the back flushing valve 7 is connected to a pulse controller 9, a diaphragm is arranged in the back flushing valve 7, and the pulse controller 9 controls the diaphragm to lift or fall;
an air outlet pipe 11 is arranged on the side face of the outer portion of the air collecting cavity 6, and the safety filter element 10 is arranged at an inlet, facing the air outlet pipe 11, in the air collecting cavity 6.
Wherein, air filter 5 is equipped with two, two air filter 5 mutual parallel arrangement, two air filter 5 all set up perpendicularly on horizontal baffle.
The back flushing valves 7 are two, and the two back flushing valves 7 correspond to the two air filter elements 5 one by one.
And a nozzle is arranged at the outlet of the back flushing valve 7, and the nozzle is a V-shaped nozzle so as to increase the gas outflow pressure.
Wherein, the two blowback valves 7 are respectively connected to the pulse controller 9 and are cooperatively controlled by the pulse controller 9.
Wherein, the pulse controller (9) is connected with a vehicle-mounted 24V power supply.
Wherein, for the purification demand that admits air of agricultural vehicle such as adaptation cotton picker, prevent to get into the intake duct because of the great impurity of size to block up cyclone tube type prefilter 2's import, consequently, cyclone tube type prefilter 2 adopts interior through 70mm, and large-scale cyclone tube about total length 200mm realizes single tube flow 150m 3 /h－220m 3 The index of the resistance is about 1.2kPa, and the efficiency is 90 percent.
Wherein, in order to adapt to the combination in the air input range of special vehicles such as cotton picker, etc. to form the large cyclone tube type prefilter with different flow ranges, a plurality of cyclone tubes are arranged in the cyclone tube type prefilter 2 according to the requirements of space limitation and air inlet resistance, wherein the air flow of a single cyclone tube is 150m 3 /h－220m 3 Between/h, the resistance of the constructed prefilter is between 1.0 and 1.5kPa, and the efficiency is about 90 percent.
Wherein, the specific parameter requirements of the dust pump 3 are as follows: 24V direct current, the dust extraction static pressure is not less than 1.2 times of the resistance of the front end air inlet cover 1 and the cyclone tube type pre-filter 2, and the dust extraction flow is not less than 10% of the air filtration flow, so that the dust extraction pump 3 can discharge the dust separated by the cyclone tube type pre-filter 2.
The dust pump 3 adopts other modes to realize the flow and pressure head of dust pumping according to the use conditions, for example, the waste injection dust exhaust of an engine is adopted, and only a waste injection dust exhaust structure meeting the requirement of 10% dust pumping amount of the pre-filter and 1.2 times of the front end resistance of the pre-filter is required to replace the dust pump.
Wherein, the air filter element 5 is a cylindrical air filter element.
The bottom of the air filter shell 4 is connected with a bottom cover 12 through a wrench buckle and a zipper, and the air filter element 5 is convenient to maintain through the bottom cover 12 and is convenient to disassemble and assemble.
When the engine works, external dust-containing air is sucked from the air inlet cover 1 at the front end of the cyclone tube type prefilter 2, the dust-containing air enters the cyclone tube type prefilter 2 through the air inlet cover 1, the cyclone tube type prefilter 2 adopts a straight-through cyclone tube with a large-size anti-blocking structure to cooperate with the dust pump 3 to pre-separate large-particle dust in the dust-containing air, and the separated dust is discharged through the dust pump 3; a cylindrical air filter element 5 is arranged in a secondary filter shell 4 at the rear end of the cyclone tube type prefilter 2 and is vertically arranged in the secondary filter shell 4; clean air filtered by the air filter element 5 enters the air collecting cavity 6 of the secondary filter shell 4 and then is led to the engine from the air outlet pipe 11 through the safety filter element 10;
when the air filter works, the pulse controller 9 simultaneously starts the back flushing work, the pulse controller 9 controls the back flushing valve 7 to be opened at regular intervals, namely, the diaphragm of the back flushing valve 7 is lifted at regular intervals, compressed air led from the vehicle-mounted air compressor passes through the compressed air processor 13 and then is led to the compressed air tank 8, and then is blown to the inside of the air filter element 5 through a back flushing channel formed after the diaphragm of the back flushing valve 7 is lifted, and the air filter element 5 is back flushed to reversely blow off dust deposited on the air filter element 5.
Wherein, preferably, the pulse controller 9 controls the blowback valve 7 to open once every 10 minutes (which can be designed within 1 minute to 1 hour according to the product characteristics and the actual conditions of the vehicle).
Example 1
This embodiment provides an agricultural machinery is with preventing blockking up air cleaner, the filter includes: the air inlet system comprises an air inlet channel, a connecting rubber tube, an air filter assembly and an engine air inlet connecting tube; wherein, air cleaner assembly includes: the device comprises a prefilter air inlet cover, a cyclone tube prefilter, a dust exhaust fan, a dust exhaust pipe, a secondary filter, an air filter element, a resistance alarm and the like;
the cyclone tube type prefilter can be flexibly arranged between the air inlet and the secondary filter shell according to space characteristics, and the principle is to reduce the air flow resistance as much as possible. After the air inlet cover of the prefilter and the cyclone tube prefilter are installed through wrenching, the air inlet cover of the prefilter is connected with an air inlet channel through a connecting rubber pipe by utilizing a clamp; the dust exhaust port of the prefilter is connected with the air inlet of the dust exhaust fan through a dust exhaust rubber pipe by utilizing a clamp, so that dust impurities separated by the prefilter are effectively removed; two air filter elements are arranged on a center rod of a secondary filter shell by nuts, so that effective contact between a sealing gasket and the shell is ensured; after the air filter element is installed, the bottom cover is connected with the secondary filter shell through a pull buckle, and a zipper is arranged between the bottom cover and the secondary filter shell to facilitate the installation of the bottom cover during the maintenance of the filter element; and connecting the resistance alarm to a pressure measuring point of the secondary filter through a pressure measuring pipe.
The whole working process of the air filter is as follows: the method comprises the following steps that external dust-containing air enters an air inlet channel through an interception net of an air inlet, air flows into a cyclone tube type prefilter in the air inlet channel, most of impurities and dust are separated by the cyclone tube type prefilter, and the air is discharged through a dust exhaust fan; the air after primary purification of the prefilter enters the interior of a secondary filter, enters a filtered air collecting cavity of a subject after fine filtration of an air filter element, and then is communicated to an air inlet of an engine through an air filtering air pipe to provide clean combustion air for the engine.
The invention belongs to the technical field of engine air inlet systems, and particularly relates to an anti-blocking long-life maintenance-free air filter, which comprises a cyclone tube type pre-filter and a dust pump, and is provided with an air filter element pulse back-blowing structure, so that the air filter element is maintained on line in real time while large-size impurities in air inlet are prevented from blocking the cyclone tube type pre-filter, the air filter is enabled to work under a lower air inlet resistance all the time, the power output of an engine is ensured, when the air filter is applied to special vehicles needing to run for a long time, such as agricultural machines, engineering machinery and the like, the shutdown caused by maintenance of the air filter element can be greatly reduced, the operating efficiency of the vehicles is greatly improved, and hidden dangers of unreliable installation and the like caused by frequent disassembly of the air filter in maintenance operation are avoided.
The air filter is suitable for the severe use environment containing high-concentration dust, crop branches and leaves and other light impurities, such as mining machinery, desert engineering machinery, agricultural machinery and the like, and avoids the problem that the power output of an engine is insufficient and the operation efficiency is influenced by frequent maintenance of the air filter due to the fact that the air filter is blocked by the large-size light impurities in air inlet. The environment of typical use is farmland such as cotton field, maize field etc. and engineering workplaces such as colliery, building site etc..
The air filter comprises an air inlet cover 1, a cyclone tube type prefilter 2, a dust extraction pump 3, a secondary filter shell 4, an air filter element 5, a blowback valve 7, a compressed air tank 8, a pulse controller 9, a safety filter element 10, an air outlet pipe 11 and a compressed air processor 13;
when the engine works, external dust-containing air is sucked from the air inlet cover 1 at the front end of the cyclone tube type prefilter 2, the dust-containing air enters the cyclone tube type prefilter 2 through the air inlet cover 1, the cyclone tube type prefilter 2 adopts a through type cyclone tube with a large-size anti-blocking structure to be matched with the dust extraction pump 3 to pre-separate large particle dust in the dust-containing air, and the separated dust is discharged through the dust extraction pump 3; a cylindrical air filter element 5 is arranged in a secondary filter shell 4 at the rear end of the cyclone tube type prefilter 2 and is vertically arranged in the secondary filter shell 4; the clean air filtered by the air filter element 5 enters the air collecting cavity 6 and then is led to the engine from the air outlet pipe 11 through the safety filter element 10. When the air filter works, the pulse controller 9 simultaneously starts the back blowing work, the pulse controller 9 controls the back blowing valve 7 to be opened once every certain time, compressed air led from the vehicle-mounted air compressor passes through the compressed air processor 13 and then leads to the compressed air tank 8, and a back blowing channel formed after a diaphragm of the back blowing valve 7 is lifted blows towards the inside of the air filter element 5, so that dust deposited on the air filter element 5 is blown down in a reverse direction. Compressed air blowback keeps the cleanness of air filter element 5 surface, makes air cleaner under lower air inlet resistance, ensures the power output of engine and reduces the routine maintenance work load.
The air filter has a compact structure, the air inlet resistance in the whole air filter element service cycle is low, the power output of an engine can be effectively improved, the time for maintenance and the personnel consumption are reduced, and the working efficiency of a vehicle is improved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be considered as the protection scope of the present invention.

Claims (10)

1. An anti-clogging long-life maintenance-free air cleaner, comprising: the device comprises an air inlet cover (1), a cyclone tube type prefilter (2), a dust pump (3), a secondary filter shell (4), an air filter element (5), a blowback valve (7), a compressed air tank (8), a pulse controller (9), a safety filter element (10), an air outlet pipe (11) and a compressed air processor (13);
the cyclone tube type prefilter (2) is connected and arranged on the side surface of the second-stage filter shell (4), and the air inlet cover (1) is arranged at the inlet of the cyclone tube type prefilter (2); the dust pump (3) is connected with the cyclone tube type prefilter (2) through a dust pumping tube;
a filter cavity and a gas collecting cavity (6) are arranged in the secondary filter shell (4), the filter cavity is positioned at the lower part, the gas collecting cavity (6) is positioned at the upper part, and a horizontal partition plate is arranged between the filter cavity and the gas collecting cavity (6);
the air filter element (5) is arranged in the filter cavity, and the air filter element (5) is vertically arranged at the lower end of the horizontal partition plate in the filter cavity;
a back-blowing valve (7) and a compressed air tank (8) are arranged in a gas collection cavity (6) of the secondary filter shell (4), an inlet of the back-blowing valve (7) is connected to the compressed air tank (8), and an outlet of the back-blowing valve (7) is opposite to an outlet of the air filter element (5) through an opening on a horizontal partition plate;
the inlet of the compressed air tank (8) is connected with the compressed air processor (13), and the compressed air processor (13) is connected to the vehicle-mounted compressor and provides an air source for the compressed air tank (8);
the back flushing valve (7) is connected to a pulse controller (9), a diaphragm is arranged in the back flushing valve (7), and the pulse controller (9) controls the diaphragm to lift or fall;
an air outlet pipe (11) is arranged on the outer side face of the air collection cavity (6), and the safe filter element (10) is arranged at an inlet, which is opposite to the air outlet pipe (11), in the air collection cavity (6).
2. The anti-clogging long-life maintenance-free air cleaner according to claim 1, wherein there are two air filter elements (5), two air filter elements (5) being arranged parallel to each other, and both air filter elements (5) being arranged vertically on a horizontal partition.
3. The anti-clogging long-life maintenance-free air cleaner as recited in claim 2, wherein there are two said blowback valves (7), and said two blowback valves (7) correspond one-to-one to said two air filter elements (5);
a nozzle is arranged at the outlet of the back flushing valve (7), and the nozzle is a V-shaped nozzle so as to increase the gas outflow pressure;
the two blowback valves (7) are respectively connected to the pulse controller (9) and are cooperatively controlled by the pulse controller (9).
4. The anti-clogging long life maintenance-free air cleaner of claim 1, wherein said pulse controller (9) is connected to an onboard 24V power supply.
5. The anti-clogging long-life maintenance-free air filter as claimed in claim 1, wherein the cyclone tube type prefilter (2) adopts a large cyclone tube with an inner diameter of 70mm and a total length of about 200mm to realize a single-tube flow of 150m 3 /h－220m 3 The index of the resistance is about 1.2kPa, and the efficiency is 90 percent.
6. The anti-clogging long-life maintenance-free air cleaner as claimed in claim 1, wherein a plurality of swirl tubes are provided in the swirl tube prefilter (2), and the air flow rate of a single swirl tube is 150m 3 /h－220m 3 Between/h, the resistance of the constructed prefilter is between 1.0 and 1.5kPa, and the efficiency is about 90 percent.
7. Anti-clogging long-life maintenance-free air cleaner according to claim 1, characterized in that the specific parameters of said dust pump (3) are: 24V direct current, the dust extraction static pressure is not less than 1.2 times of the resistance of the front end air inlet cover (1) and the cyclone tube type prefilter (2), and the dust extraction flow is not less than 10% of the air filtration flow, so that the dust extraction pump (3) can discharge the dust separated by the cyclone tube type prefilter (2).
8. The anti-clogging long life maintenance-free air cleaner of claim 1, wherein said air filter element (5) is a cylindrical air filter element.
9. The anti-clogging long-life maintenance-free air cleaner as claimed in claim 1, wherein the bottom of the air filter casing (4) is connected with a bottom cover (12) through a trigger and a zipper, and the bottom cover (12) is convenient for disassembly and assembly, thereby facilitating the maintenance of the air filter element (5).
10. The anti-clogging long-life maintenance-free air cleaner as claimed in claim 1, wherein when the engine is in operation, external dust-containing air is sucked from the air inlet cover (1) at the front end of the cyclone tube type prefilter (2), the dust-containing air enters the cyclone tube type prefilter (2) through the air inlet cover (1), the cyclone tube type prefilter (2) adopts a straight-through cyclone tube with a large-size anti-clogging structure to cooperate with the dust suction pump (3) to pre-separate large-particle dust in the dust-containing air, and the separated dust is discharged through the dust suction pump (3); a cylindrical air filter element (5) is arranged in a secondary filter shell (4) at the rear end of the cyclone tube type prefilter (2) and is vertically arranged in the secondary filter shell (4); clean air filtered by the air filter element (5) enters a gas collection cavity (6) of the secondary filter shell (4) and then is led to the engine from an air outlet pipe (11) through a safety filter element (10);
when the air filter works, the pulse controller (9) simultaneously starts the back blowing work, the pulse controller (9) controls the back blowing valve (7) to be opened once every certain time, namely, the diaphragm of the back blowing valve (7) is lifted once every certain time, so that the compressed air introduced from the vehicle-mounted air compressor passes through the compressed air processor (13) and then flows into the compressed air tank (8), and then is blown into the air filter element (5) through a back blowing channel formed after the diaphragm of the back blowing valve (7) is lifted, and the back blowing air filter element (5) reversely blows off the dust deposited on the air filter element (5).
CN202210531412.2A 2022-05-16 2022-05-16 Prevent blockking up long-life non-maintaining air cleaner Pending CN114922752A (en)

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