CN110873009A - Self-rotating air filter device - Google Patents
Self-rotating air filter device Download PDFInfo
- Publication number
- CN110873009A CN110873009A CN201810998609.0A CN201810998609A CN110873009A CN 110873009 A CN110873009 A CN 110873009A CN 201810998609 A CN201810998609 A CN 201810998609A CN 110873009 A CN110873009 A CN 110873009A
- Authority
- CN
- China
- Prior art keywords
- assembly
- end cover
- filter element
- air
- filter
- 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.)
- Pending
Links
Images
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
- F02M35/08—Air cleaners with means for removing dust, particles or liquids from cleaners; with means for indicating clogging; with by-pass means; Regeneration of cleaners
-
- 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
-
- 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
Abstract
The invention relates to a self-rotating air filter device, which comprises an upper end cover assembly, a spiral-flow sheet, a main filter element assembly, a safety filter element assembly and a lower end cover assembly, wherein the upper end cover assembly is provided with a first spiral-flow sheet; the upper end cover assembly and the lower end cover assembly are connected through a buckle to form a shell, and the lower end cover assembly is provided with an air inlet and an air outlet; the main filter element assembly is arranged in the shell, the upper end cover of the main filter element assembly is arranged in a rotary ring groove in the upper end cover assembly, and the lower end cover of the main filter element assembly is arranged in a rotary ring groove in the lower end cover assembly; the upper end cover of the filter element of the safety filter element assembly is arranged in the rotary ring groove at the upper part of the main filter element assembly, and the lower end of the filter element is fixedly connected with the air outlet; the cyclone sheet is detachably sleeved outside the main filter element assembly. Compared with the prior art, the dust removing and dust removing device has the advantages that the rotational flow sheet is additionally arranged, so that the main filter element assembly can rotate under the driving of air in the air inlet, the dust removing and dust removing effects are achieved through the centrifugal force of the main filter element assembly, the service life is long, the dismounting and the mounting are convenient, and the like.
Description
Technical Field
The invention relates to a cleaning device for air required by an internal combustion engine, in particular to a self-rotating air filter device.
Background
At present, a plurality of air filter assemblies have the problem of reciprocating disassembly and assembly within maintenance mileage, and mainly aim to remove dust adhered to the surface of a filter element, so that the requirement of stopping the vehicle for manual cleaning at any time exists during the running of the vehicle;
another problem is that if the filter assembly does not include a fixed swirl plate or an air inlet baffle, resulting in a filter element of the filter assembly, one portion is in air flow impact damage for a long time, so that the life of the entire filter element is severely shortened;
present air cleaner assembly all adopts the filter core fixed, and the design of removing dust many times in the manual maintenance cycle for whole maintenance process difficulty is heavy, and the mounted position of the position of empty filter assembly installation on the vehicle has also received the restriction, if the position is too high or too hidden, can only maintain or change life-span termination filter core in 4S shop.
And from rotating air cleaner assembly, self is at the working process, has very strong self-cleaning nature, uses rotatory centrifugal force that produces to clear up the miscellaneous dirt of adhesion on the filter core surface often, only need filter core life-span when ending carry out disposable maintenance change in 4S shop to make the filter core circumferencial direction receive the air inlet and admit air the impact, increased the life cycle of filter core, practice thrift use cost, and the mounted position can be more random, need not to consider that the filter assembly need install in any suitable position.
Disclosure of Invention
It is an object of the present invention to overcome the above-mentioned deficiencies of the prior art by providing a spin-on air filter device.
The purpose of the invention can be realized by the following technical scheme:
a self-rotating air filter device comprises a shell and a filter component, wherein an air inlet and an air outlet are formed in the shell; the self-rotating air filter device is characterized by further comprising a spinning disk, and the spinning disk is detachably sleeved outside the filtering component and is convenient to reuse; in operation, the cartridge member rotates relative to the housing.
The spiral-flow sheet comprises a body and a spiral blade structure, wherein the body is of a frame structure, and the shape of the body is the same as that of the filter component; the helical blade structure is arranged along the circumferential direction of the body and is fixedly connected with the outer part of the frame of the body.
The spiral angle of the spiral blade structure is 10-20 degrees, the included angle between the flow baffle and the air inlet is 95-115 degrees, and different angle adjustment can be carried out on different requirements in products.
Preferably, the rotation angle of the spiral blade structure is 15 degrees, and the included angle between the flow baffle and the air inlet is 105 degrees.
Under the engine behavior, the air current promotes helical blade and keeps off and flows the board after getting into to drive whole filter core rotatory in inside, rotatory filter core is difficult on the one hand to adhere to impurity granule in the air, and the centrifugal force of rotatory formation drives the filter core on the one hand and throws away the surface to the particulate matter, reaches the cleaning action. The fender flow board passes through the guide effect with helical blade (being the spinning disk), drives the air current and adorns soon inside the casing, and the spiral air current can be thrown the granule that is mingled with in the air and accumulated on the shells inner wall and deposit to the bottom, because the structural requirement of different products is inconsistent, can refer to centrifugal force F for a basic reason p.s for w2R.m is more than or equal to about 50N, can get rid of the granule and reach the effect of secondary cleaning, wherein F centrifugal force, w angular velocity, r filter element radius, m filter element dead weight, p represents pressure, s represents the unit area.
The spinning disk is integrally molded.
The helical blade structure extends from one end of the flow baffle to the other end.
The shell comprises an upper end cover assembly and a lower end cover assembly which are connected in a matching way to form an internal cavity; the upper end of the filtering component is connected with the upper end cover assembly, and the lower end of the filtering component is connected with the lower end cover assembly.
The filter component comprises a main filter element assembly and a safety filter element assembly, the main filter element assembly comprises a first upper end cover, first filter paper, a first central pipe and a first lower end cover, and the safety filter element assembly comprises a second upper end cover, second filter paper, a second central pipe and an O-shaped ring; the first upper end cover of the main filter element assembly is matched with a rotary ring groove in the upper end cover assembly, and the first lower end cover of the main filter element assembly is matched with the rotary ring groove in the lower end cover assembly; the second upper end cover of the safety filter element assembly is matched with the rotary ring groove in the main filter element assembly, the lower part of the second central tube of the safety filter element assembly is fixedly connected with the air outlet, and the main filter element assembly rotates relative to the shell during working; preferably, the lower part of the second central tube of the safety filter element assembly is fixedly connected with the air outlet through threads and is sealed through an O-shaped ring.
The upper end cover assembly comprises a cover and a check valve; the lower end cover assembly comprises a lining, a buckle, a second lower end cover, an air inlet and an air outlet; the cover of the upper end cover assembly is connected with the second lower end cover of the lower end cover assembly in a buckling mode.
The air filter assembly sucks air through the air inlet of the lower end cover assembly, the air acts on the rotational flow sheet to push the main filter element assembly to rotate, and the safety filter element assembly is fixed at the air outlet of the lower end cover assembly by using threads; the cyclone plate is added, so that the main filter element assembly can rotate under the driving of air in the air inlet, and the dust removing effect is achieved through the centrifugal force of the main filter element assembly; the invention utilizes the main filter element assembly and the safety filter element assembly to purify the air entering the internal combustion engine and remove impurity particles contained in the air, so that the exhaust particles of the internal combustion engine can meet the requirements of the national emission regulation; the main filter element assembly is a maintenance part and is replaced after a specific mileage, and the service life of the whole safety filter element assembly is not required to be replaced.
Compared with the prior art, the invention has the following advantages:
1. the service life is long: when the internal combustion engine works, the self-rotating air filter assembly pushes the main filter element assembly to rotate by itself along with the action of sucked air flow on the swirl sheet, the centrifugal force generated by rotation can preliminarily filter and deposit impurity particles entering along with air at the bottom of the shell of the filter assembly, the main filter element assembly is not required to be disassembled and assembled for many times in the service life according to the maintenance mode of the conventional air filter assembly, manual dust removal is realized, and a non-professional person is more likely to damage the main filter element assembly in the manual dust removal process, so that the service life is greatly reduced; compared with a conventional air filter assembly, the rotary main filter element assembly avoids the situation that a single part bears air impact from an air inlet, the local service life is prior to the end of the whole service life, the self-rotating main filter element assembly can receive the impact in all directions, and the service life is prolonged.
2. Reduce whole car installation limitation: because the main filter element assembly needs to be manually maintained in the service life period, a designer of the whole automobile needs to consider the installation position of the air filter assembly to be convenient for disassembly and assembly by personnel, and the whole main filter element assembly does not need to be disassembled and assembled for maintenance for many times in the service life period and is maintained for one time when reaching the service life period.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a schematic perspective view of a spinning disk according to the present invention;
FIG. 3 is a schematic top view of the spinning disk of the present invention;
FIG. 4 is a schematic view of the spinning disk of the present invention;
FIG. 5 is a schematic structural view of the upper end cap assembly of the present invention;
FIG. 6 is a schematic view of a main cartridge assembly of the present invention;
FIG. 7 is a schematic view of a safety cartridge assembly according to the present invention;
FIG. 8 is a schematic structural view of a lower end cap assembly according to the present invention.
In the drawing, 1 is an upper end cover assembly, 2 is a spinning disk, 3 is a main filter element assembly, 4 is a safety filter element assembly, 5 is a lower end cover assembly, 11 is a cover, 12 is a check valve, 21 is a spinning disk structure, 22 is a baffle plate, 31 is a first upper end cover, 32 is first filter paper, 33 is a first central tube, 34 is a first lower end cover, 41 is a second upper end cover, 42 is second filter paper, 43 is a second central tube, 44 is an O-ring, 51 is a bushing, 52 is a buckle, 53 is a second lower end cover, 54 is an air inlet, and 55 is an air outlet.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
A self-rotating air filter device is structurally shown in figure 1 and comprises an upper end cover assembly 1, a vortex sheet 2, a main filter element assembly 3, a safe filter element assembly 4 and a lower end cover assembly 5.
FIG. 2, FIG. 3 and FIG. 4 are the schematic structure drawing of spinning disk, and spinning disk 2 moulds plastics as an organic whole, can dismantle the suit in main filter core assembly 3's outside, the used repeatedly of being convenient for. The spinning disk 2 comprises a helical blade structure 21 and a flow baffle plate 22, wherein the flow baffle plate 22 is of a similar cylindrical distribution frame structure; the helical blade structure 21 is arranged along the circumferential direction of the flow baffle and is fixedly connected with the outside of the frame of the flow baffle 22; the rotation angle of the spiral blade structure is 15 degrees; the included angle between the flow baffle and the air inlet is 105 degrees; the helical blade structure 21 extends from one end of the baffle plate 22 to the other.
Fig. 5 is a schematic structural diagram of an upper end cap assembly, wherein the upper end cap assembly 1 comprises a cap 11 and a check valve 12, fig. 8 is a schematic structural diagram of a lower end cap assembly, the lower end cap assembly comprises a liner 51, a buckle 52, a second lower end cap 53, an air inlet 54 and an air outlet 55, and the upper end cap assembly 1 and the lower end cap assembly 5 are connected in a buckle manner to form a shell; the filter component is arranged in the shell to form a filter cavity; an air inlet 54 is arranged on the second lower end cover 53 of the lower end cover assembly 5, the air inlet 54 is communicated with the filtering cavity, an air outlet 55 is arranged on the second lower end cover 53 of the lower end cover assembly 5, and the air outlet 55 is connected with the filtering component.
The main filter element assembly 3 and the safety filter element assembly 4 form a filter part, fig. 6 is a schematic structural diagram of the main filter element assembly, fig. 7 is a schematic structural diagram of the safety filter element assembly, wherein the main filter element assembly 3 and the safety filter element assembly 4 are both cylindrical structures; the main filter element assembly 3 comprises a first upper end cover 31, a first filter paper 31, a first central pipe 33 and a first lower end cover 34; the safety filter element assembly 4 comprises a second upper end cover 41, second filter paper 42, a second central pipe 43 and an O-shaped ring 44, and the safety filter element assembly 4 is sleeved inside the main filter element assembly 3.
The first upper end cover 31 of the main filter element assembly 3 is installed in the rotating ring groove inside the cover 11, the lower end cover 34 of the main filter element assembly is installed in the rotating ring groove inside the second lower end cover 53, the second upper end cover 41 of the safety filter element assembly 4 is installed in the rotating ring groove of the main filter element assembly 3, the lower part of the second center tube 43 of the safety filter element assembly 4 is fixedly connected with the air outlet 55 of the lower end cover assembly 5 through threads, and the air outlet is sealed through an O-shaped ring 44.
Under engine behavior, the air current promotes helical blade and keeps off and flows the board after getting into to drive whole filter core and rotate in inside, rotatory filter core is difficult on the one hand to adhere to impurity granule in the air, and the centrifugal force of rotatory formation throws away the surface with the particulate matter on the filter core on the one hand, reaches the cleaning action. The baffle plate and the helical blade (namely, the spinning disk) drive the air flow to rotate in the shell through the guiding effect, and the helical air flow can throw particles mixed in the air to the inner wall of the shell to be accumulated and precipitated to the bottom.
When the air filter assembly works, air is sucked in through the air inlet 54 of the lower end cover assembly 5 by the air filter assembly, the air acts on the vortex sheet 2 to push the main filter element assembly 3 to rotate, the safety filter element assembly 4 is fixed at the air outlet 55 of the lower end cover assembly 5 by threads, the main filter element assembly 3 rotates by the driving of the air in the air inlet, and the dust removing effect is achieved by the centrifugal force of the main filter element assembly 3; meanwhile, the filter component can filter and purify air entering the internal combustion engine, and remove impurity particles in the air; the rotary main filter element assembly avoids the single part of the filter element assembly bearing the air impact from the air inlet, prevents the local service life from ending before the whole service life, and can prolong the service life.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Example 2
A self-rotating air filter device is structurally shown in figure 1 and comprises an upper end cover assembly 1, a vortex sheet 2, a main filter element assembly 3, a safe filter element assembly 4 and a lower end cover assembly 5.
The structures of the upper end cover assembly 1, the main filter element assembly 3, the safety filter element assembly 4 and the lower end cover assembly 5 of the self-rotating air filter device are the same as those of the embodiment 1, and the difference is that the structural parameters of the spinning disk in the embodiment 2 are different from those of the spinning disk in the embodiment 1.
In embodiment 2, the spinning disk is as an organic whole to mould plastics, can dismantle the suit in the outside of main filter core assembly, is convenient for used repeatedly. The vortex sheet comprises a helical blade structure and a flow baffle plate, wherein the flow baffle plate is of a similar cylindrical distribution frame structure; the spiral blade structure is arranged along the circumferential direction of the flow baffle and is fixedly connected with the outer part of the frame of the flow baffle; the rotation angle of the spiral blade structure is 10 degrees; the included angle between the flow baffle and the air inlet is 95 degrees; the helical blade structure extends from one end of the baffle plate to the other end.
Example 3
A self-rotating air filter device is structurally shown in figure 1 and comprises an upper end cover assembly 1, a vortex sheet 2, a main filter element assembly 3, a safe filter element assembly 4 and a lower end cover assembly 5.
The structures of the upper end cover assembly 1, the main filter element assembly 3, the safety filter element assembly 4 and the lower end cover assembly 5 of the self-rotating air filter device are the same as those of the embodiment 1, and the difference is that the structural parameters of the spinning disk in the embodiment 3 are different from those of the spinning disk in the embodiment 1.
In embodiment 3, the spinning disk is as an organic whole and moulds plastics, can dismantle the suit in the outside of main filter core assembly, is convenient for used repeatedly. The vortex sheet comprises a helical blade structure and a flow baffle plate, wherein the flow baffle plate is of a similar cylindrical distribution frame structure; the spiral blade structure is arranged along the circumferential direction of the flow baffle and is fixedly connected with the outer part of the frame of the flow baffle; the rotation angle of the spiral blade structure is 20 degrees; the included angle between the flow baffle and the air inlet is 115 degrees; the helical blade structure extends from one end of the baffle plate to the other end.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (10)
1. A self-rotating air filter device comprises a shell and a filter component, wherein an air inlet (54) and an air outlet (55) are formed in the shell; the self-rotating air filter device is characterized by further comprising a spinning disk (2), wherein the spinning disk (2) is detachably sleeved outside the filtering component; in operation, the filter element rotates relative to the housing.
2. A spin-on air cleaner device according to claim 1 wherein the spinning disk (2) comprises a flow baffle and a spiral vane structure, the flow baffle being a frame structure; the spiral blade structure is arranged along the circumferential direction of the flow baffle and is fixedly connected with the outside of the frame of the flow baffle.
3. The spin-on air cleaner device according to claim 2, wherein the spiral vane structure has a rotation angle of 10-20 ° and the baffle plate has an angle of 95-115 ° with the intake air; the spiral angle of the spiral blade structure is preferably 15 degrees, and the included angle between the flow baffle and the air inlet is preferably 105 degrees.
4. A spin-on air cleaner device according to claim 2 wherein the swirl plate (2) is injection moulded in one piece.
5. A spin-on air cleaner device according to claim 2 wherein the spiral vane structure extends from one end of the body to the other.
6. A spin-on air cleaner device according to claim 1 wherein the housing comprises an upper end cap assembly (1) and a lower end cap assembly (5) which are matingly connected to form an internal cavity; the upper end of the filtering component is connected with the upper end cover assembly (1), and the lower end of the filtering component is connected with the lower end cover assembly (5).
7. A spin-on air cleaner device according to claim 6, wherein the air inlet (54) is provided at the side of the lower head assembly (5), and the air outlet (55) is provided at the bottom of the lower head assembly (5).
8. A spin-on air cleaner device according to claim 7, wherein the filter member comprises a main filter assembly (3) and a safety filter assembly (4), the main filter assembly (3) comprises a first upper end cap (31), a first filter paper (32), a first center tube (33) and a first lower end cap (34), and the safety filter assembly (4) comprises a second upper end cap (41), a second filter paper (42), a second center tube (43) and an O-ring (44); the first upper end cover (31) of the main filter element assembly (3) is matched with a rotary ring groove in the upper end cover assembly (1) for installation, and the first lower end cover (34) of the main filter element assembly (3) is matched with a rotary ring groove in the lower end cover assembly (5) for installation; the second upper end cover (41) of safe filter core assembly (4) is installed in the rotating ring inslot of main filter core assembly (3), the second center tube (43) lower extreme of safe filter core assembly (4) with gas outlet (55) fixed connection, during operation main filter core assembly (3) take place to rotate for the casing.
9. A spin-on air cleaner arrangement according to claim 8, wherein the lower portion of the second central tube (43) of the safety cartridge assembly (4) is fixedly connected to the air outlet (55) by a screw thread and sealed (44) by an O-ring.
10. A spin-on air cleaner arrangement according to claim 6, wherein the upper end cap assembly (1) comprises a cap (11) and a check valve (12); the lower end cover assembly (5) comprises a lining (51), a buckle (52), a second lower end cover (53), an air inlet (54) and an air outlet (55); the upper end cover assembly (1) is connected with the lower end cover assembly (5) in a buckling mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810998609.0A CN110873009A (en) | 2018-08-29 | 2018-08-29 | Self-rotating air filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810998609.0A CN110873009A (en) | 2018-08-29 | 2018-08-29 | Self-rotating air filter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110873009A true CN110873009A (en) | 2020-03-10 |
Family
ID=69715536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810998609.0A Pending CN110873009A (en) | 2018-08-29 | 2018-08-29 | Self-rotating air filter device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110873009A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610369A (en) * | 2020-12-15 | 2021-04-06 | 安徽法西欧汽车部件有限公司 | Filter element of automobile filter |
-
2018
- 2018-08-29 CN CN201810998609.0A patent/CN110873009A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610369A (en) * | 2020-12-15 | 2021-04-06 | 安徽法西欧汽车部件有限公司 | Filter element of automobile filter |
| CN112610369B (en) * | 2020-12-15 | 2023-04-07 | 安徽法西欧汽车部件有限公司 | Filter element of automobile filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3973937A (en) | Engine air precleaner | |
| EP1268038B1 (en) | Intake air cleaning apparatus | |
| CN204961339U (en) | Wet dedusting purifies fan | |
| CN108771945B (en) | A packed tower for exhaust purification | |
| CN203214208U (en) | Self-cleaning modified automobile air filter | |
| CN202148966U (en) | Air filter for heavy-duty automobile used in mining area | |
| CN110873009A (en) | Self-rotating air filter device | |
| CN216825482U (en) | Oil mist dust remover | |
| CN105011861A (en) | Dust collector cyclone separator | |
| CN111577490B (en) | From on-vehicle air cleaner of dust absorption formula | |
| CN107725230A (en) | Air cleaner assy | |
| CN107355321A (en) | A kind of air cleaner | |
| CN201391388Y (en) | Desert air filter for light-duty truck | |
| CN207454133U (en) | Air cleaner | |
| CN108854375A (en) | Cyclone dust collectors with spray equipment | |
| CN209083442U (en) | A kind of self-rotary air purifier unit | |
| CN210751908U (en) | Special dust pelletizing system of application equipment | |
| CN209800128U (en) | Pre-filtering assembly of air filter | |
| CN209800130U (en) | Conical dust collecting surface structure of air filter | |
| CN209604330U (en) | A kind of spray removal of impurities centrifugal fan | |
| CN210495720U (en) | Double-rotation dust and mist purifying device | |
| CN209892361U (en) | Air filter | |
| CN2477284Y (en) | Centrifugal wetting fume purifier | |
| CN202705976U (en) | Dust-free leakage device of road sweeper | |
| CN206404515U (en) | A kind of self-priming centrifugation foam dust arrester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |