CN110508064A - Air Filter, engine pack and excavator - Google Patents
Air Filter, engine pack and excavator Download PDFInfo
- Publication number
- CN110508064A CN110508064A CN201910829833.1A CN201910829833A CN110508064A CN 110508064 A CN110508064 A CN 110508064A CN 201910829833 A CN201910829833 A CN 201910829833A CN 110508064 A CN110508064 A CN 110508064A
- Authority
- CN
- China
- Prior art keywords
- snorkel
- air filter
- panel
- pipe
- air
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2221/00—Applications of separation devices
- B01D2221/14—Separation devices for workshops, car or semiconductor industry, e.g. for separating chips and other machining residues
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The present invention provides a kind of Air Filter, engine pack and excavator, belongs to construction machinery production technical field.Air Filter includes panel and snorkel, it is formed with mesh-structured on panel, the both ends of snorkel are fixedly connected with the same face of panel respectively, are formed with through-hole towards mesh-structured direction on the side wall of snorkel, air inlet is provided on snorkel, snorkel is used to be connected to by air inlet with air pump.The purpose of the present invention is to provide a kind of Air Filter, engine pack and excavators, can conveniently clear up the accumulation particulate matter such as itself dust stratification, reduce adverse effect of the Air Filter to device radiation in machine.
Description
Technical field
The present invention relates to construction machinery production technical fields, in particular to a kind of Air Filter, engine pack and digging
Pick machine.
Background technique
With the continuous development of China's engineering construction field, in engineering construction also not for the demand of various engineering machinery
Disconnected to increase, the application scenarios of engineering machinery are also enriched constantly.
The application environment of usual engineering machinery is more severe, often has biggish dust or floating particle object, therefore be
Work machine internal device can be protected, can be arranged around device in the machine for needing to radiate in engineering machinery dust-proof
Net generates adverse effect to device radiation in machine to reduce while protecting to its structure.
But current Air Filter is in use, and with the accumulation for using the time, full dust etc. can be accumulated on Air Filter
Particulate matter, and be not easy to clear up, the mesh that these particulate matters can block Air Filter influences device in the machine that Air Filter encloses
Heat dissipation.
Summary of the invention
The purpose of the present invention is to provide a kind of Air Filter, engine pack and excavators, can conveniently clear up
Itself dust stratification etc. accumulates particulate matter, reduces adverse effect of the Air Filter to device radiation in machine.
The embodiment of the present invention is achieved in that
The one side of the embodiment of the present invention provides a kind of Air Filter, comprising: panel and snorkel are formed on panel
Mesh-structured, the both ends of snorkel are fixedly connected with the same face of panel respectively, towards mesh-structured on the side wall of snorkel
Direction is formed with through-hole, and air inlet is provided on snorkel, and snorkel is used to be connected to by air inlet with air pump.
Optionally, the shape of panel is rectangle, and snorkel includes two, and two snorkels are diagonal along two of panel respectively
Line setting is simultaneously interconnected in point of intersection, and air inlet is located at intersection point, and through-hole is provided with multiple, extension of multiple through-holes along snorkel
Direction is uniformly distributed.
Optionally, snorkel includes multiple first pipes and multiple second pipes, and multiple first manage and multiple second pipe X-shapes
It is interconnected two-by-two at lattice structure, and between multiple first pipes and multiple second pipes.
Optionally, multiple first pipes are parallel to each other, and multiple second pipes are parallel to each other, and the first pipe and the second pipe mutually hang down
Directly.
Optionally, snorkel has multiple, and the end to end connection of snorkel forms pipe chain, and the extension of two neighboring snorkel
Direction has angle.
Optionally, angle is 90 degree.
Optionally, air inlet is located at least one end of pipe chain.
Optionally, the end of snorkel is connected to the opposite both ends of panel, and angle is 45 degree.
The another aspect of the embodiment of the present invention provides a kind of engine pack, comprising: engine, cover and above-mentioned
Air Filter, Air Filter and cover are enclosed shell, and engine is located in shell.
The another aspect of the embodiment of the present invention, provides a kind of excavator, including above-mentioned engine pack.
The beneficial effect of the embodiment of the present invention includes:
A kind of Air Filter provided in an embodiment of the present invention, including panel and snorkel.Wherein mesh is formed on panel
Structure can obstruct the particulate matters such as dust by mesh-structured on panel, to play the effect of protective dustproof to device in machine.
The both ends of snorkel are fixedly connected with the same face of panel respectively, so that the side wall of snorkel has towards the side of panel, In
It is formed with through-hole towards the mesh-structured direction of panel on the side wall of snorkel, and is additionally provided with air inlet on snorkel
Mouthful, after snorkel is connected to by air inlet with air pump, the gas of air pump output is able to enter snorkel, and passes through snorkel
Side wall on the through-hole discharge that is formed can by the gas that through-hole is discharged since the direction of the through-hole is towards mesh-structured
It is mesh-structured to be blown off that impact generated to accumulation particulate matters such as dust stratifications on mesh-structured, to play the cleaning of Air Filter
Cleaning effect.It is arranged by above structure, which, can be conveniently to the net of itself in the case where normal dust-proof
Dust stratification etc. in pore structure is cleared up, and reduces the particulate matters such as dust to mesh-structured blocking, to reduce Air Filter to machine
The adverse effect of interior device radiation, and its aesthetics can be improved to the cleaning cleaning of itself by the Air Filter.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is one of the structural schematic diagram of Air Filter provided in an embodiment of the present invention；
Fig. 2 is the second structural representation of Air Filter provided in an embodiment of the present invention；
Fig. 3 is the third structural representation of Air Filter provided in an embodiment of the present invention；
Fig. 4 is one of the flow diagram of Air Filter method for cleaning provided in an embodiment of the present invention；
Fig. 5 is the two of the flow diagram of Air Filter method for cleaning provided in an embodiment of the present invention；
Fig. 6 is the three of the flow diagram of Air Filter method for cleaning provided in an embodiment of the present invention.
Icon: 110- panel；111- is mesh-structured；120- snorkel；121- first is managed；122- second is managed.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
Solution is indication or suggestion relative importance.
In addition, the terms such as term "horizontal", "vertical" are not offered as requiring component abswolute level or pendency, but can be slightly
Low dip.It is not to indicate that the structure has been had to if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It is complete horizontal, but can be slightly tilted.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
The embodiment of the present invention provides a kind of Air Filter, as shown in Figure 1, comprising: panel 110 and snorkel 120, panel
Mesh-structured 111 are formed on 110, the both ends of snorkel 120 are fixedly connected with the same face of panel 110 respectively, snorkel 120
Side wall on towards mesh-structured 111 direction be formed with through-hole, air inlet is provided on snorkel 120, snorkel 120 is used for
It is connected to by air inlet with air pump.
In use, be first connected to snorkel 120 air pump by air inlet, open air pump, the gas that air pump exports into
Enter snorkel 120 and be discharged by the through-hole on 120 side wall of snorkel, to be tired out the dust stratification etc. on the Air Filter by gas
Long-pending particulate matter blows off, to realize itself cleaning of Air Filter.
It should be noted that first, the through-hole on snorkel 120 can be it is multiple, can also be with one, those skilled in the art
Member can be configured according to actual needs, herein with no restrictions.
Second, the air pump being connected to snorkel 120 usually selects high-pressure pump, and certainly, in practical applications, air pump may be used also
It to select different gas pump or fans etc., is not particularly limited herein, as long as gas can be conveyed into snorkel 120.
Third, the air inlet being arranged on snorkel 120 can be located at the nozzle of snorkel 120, can also be located at snorkel
An air inlet can be set on 120 side wall, and on snorkel 120 also can be set multiple air inlets, not limit herein
System.When air inlet is set as multiple, corresponding snorkel 120 can be correspondingly connected with multiple air pumps by air inlet simultaneously.
4th, snorkel 120 can be set one, also can be set it is multiple, when snorkel 120 is set as multiple, respectively
It can be interconnected or not be connected between snorkel 120.It wherein, can between multiple snorkels 120 when interconnected setting
It, certainly in practical applications can also be in each snorkel air inlet is above only arranged in one of multiple snorkels 120
Air inlet is respectively set on 120.When each snorkel 120 is not interconnected, then air inlet is respectively set in each snorkel 120,
And it is connected respectively an air pump.In general, each snorkel 120 is respectively positioned on panel 110 when snorkel 120 is set as multiple
The same face.
A kind of Air Filter provided in an embodiment of the present invention, including panel 110 and snorkel 120.Wherein shape on panel 110
At having mesh-structured 111, the particulate matters such as dust can be obstructed by mesh-structured 111 on panel 110, to rise to device in machine
To the effect of protective dustproof.The both ends of snorkel 120 are fixedly connected with the same face of panel 110 respectively, so that snorkel 120
Side wall has towards the side of panel 110, towards mesh-structured 111 direction shape of panel 110 on the side wall of snorkel 120
At there is through-hole, and air inlet is additionally provided on snorkel 120, after snorkel 120 is connected to by air inlet with air pump, gas
The gas of pump output is able to enter snorkel 120, and the through-hole discharge formed on the side wall for passing through snorkel 120, due to this
The direction of through-hole can accumulate dust stratification on mesh-structured 111 etc. towards mesh-structured 111, therefore by the gas that through-hole is discharged
Particulate matter generates impact to be blown off mesh-structured 111, to play the cleaning cleaning effect of Air Filter.Pass through above structure
Setting, the Air Filter in the case where normal dust-proof, can conveniently to dust stratification on itself mesh-structured 111 etc. into
Row cleaning, reduces the blocking of the particulate matters to mesh-structured 111 such as dust, thus reduce Air Filter in machine device radiation it is bad
It influences, and its aesthetics can be improved to the cleaning cleaning of itself by the Air Filter.
Optionally, as shown in Figure 1, the shape of panel 110 is rectangle, snorkel 120 includes two, two snorkels 120
It is interconnected respectively along two diagonal lines setting of panel 110 and in point of intersection, air inlet is located at intersection point, and through-hole is provided with more
A, multiple through-holes are uniformly distributed along the extending direction of snorkel 120.
The shape of panel 110 is rectangle, and snorkel 120 is set as two, by two snorkels 120 respectively along panel
110 two diagonal lines setting, and be connected in point of intersection, multiple through-holes are uniformly distributed in the extending direction of snorkel 120, it can
Mesh-structured the 111 of the cover plate 110 for keeping the gas being discharged by snorkel 120 more uniform, to improve to mesh knot
The cleaning effect of structure 111.
Optionally, as shown in Fig. 2, snorkel 120 includes multiple first pipes 121 and multiple second pipes 122, multiple first pipes
121 and multiple second pipes 122 intersect to form lattice structure, and between multiple first pipes 121 and multiple second pipes 122 two-by-two mutually
Connection.
It should be noted that the through-hole of snorkel 120 is respectively arranged on the first pipe 121 and the second pipe 122, and usually logical
Hole is set as multiple, and the extending direction along the first pipe 121 and the second pipe 122 is uniformly distributed respectively.
The structure that multiple first pipes 121 and multiple second pipes 122 are constituted is set by snorkel 120, passes through multiple first
Pipe 121 and multiple second pipes 122 intersect the lattice structure to be formed, and can increase snorkel 120 towards mesh-structured 111 1
It is dust-proof to promote this to improve area coverage of the venthole discharge gas on mesh-structured 111 for the coverage area of the side wall of side
The effect of mesh-structured 111 cleaning of net.
Optionally, as shown in Fig. 2, multiple first pipes 121 are parallel to each other, multiple second pipes 122 are parallel to each other, and the first pipe
121 and second pipe 122 be mutually perpendicular to.
The lattice structure that setting is formed so that the first pipe 121 and the second pipe 122 intersect by above-mentioned setting is rectangle,
And each grid is also rectangle, compound with regular structure, the gas being discharged conducive to snorkel 120 is uniformly distributed, and lift gas is to mesh knot
The effect that structure 111 is cleared up.
Optionally, as shown in figure 3, snorkel 120 has multiple, the end to end connection of snorkel 120 forms pipe chain, and adjacent
The extending direction of two snorkels 120 has angle.
Snorkel 120 is set as multiple, and joins end to end and to form pipe chain, due to the extension of two neighboring snorkel 120
Direction has angle, therefore can increase area coverage of the pipe chain on panel 110, so that promoting it is discharged gas in mesh knot
Coverage area on structure 111 enhances the cleaning effect to mesh-structured 111.Wherein, the extension side of two neighboring snorkel 120
It is to be less than 180 degree greater than 0 degree to the angle having, i.e., the extending direction of two adjacent snorkels 120 is not overlapped.
Optionally, angle is 90 degree.
90 degree are set by the angle of the extending direction of two neighboring snorkel 120, snorkel 120 can improved relatively
While the area coverage of panel 110, the quantity of snorkel 120 is saved to reduce cost.
Optionally, air inlet is located at least one end of pipe chain.
Air inlet is arranged in at least one end of pipe chain, that is, is located at the port of two snorkels 120 at pipe chain both ends, it can
Increase gas and enter the flow of pipe chain, and it is more abundant that gas can be made to circulate in snorkel 120, reduces partial ventilation
Gas pressure intensity is lesser in pipe 120 happens, and improves the uniformity of the pressure of pipe chain discharge gas, enhances to mesh-structured
111 cleaning effect.
Optionally, the end of snorkel 120 is connected to the opposite both ends of panel 110, and angle is 45 degree.
Area coverage of the snorkel 120 relative to panel 110 can be enhanced with this configuration, to improve for mesh knot
The cleaning effect of structure 111.
The embodiment of the present invention provides a kind of Air Filter method for cleaning, applied to the Air Filter of any of the above-described, Air Filter
Snorkel 120 is connected to air pump, and air pump is connect with controller, as shown in figure 4, this method comprises:
Step 210: controller receives dedusting mode instruction, and the opening and closing of air pump is controlled according to dedusting mode instruction.
The above method receives the dedusting mode instruction of operator by controller, and it is dust-proof to realize to control the opening and closing of air pump
Net cleans the cleaning of itself, simple and quick, and convenient for long-range control, fugitive dust in dust stratification scale removal process is avoided to generate human body
Injury.
Optionally, as shown in figure 5, controller receives dedusting mode instruction, and air pump is controlled according to dedusting mode instruction
Opening and closing includes:
Step 211: controller receives automatic dust removing mode instruction.
Step 212: controller controls air pump according to prefixed time interval and opens, and closes after controlling air pump operation preset duration
It closes.
Air Filter automatic dust removing is controlled using controller, enable air pump according to the time interval of preset time from
It is dynamic to open, and closed afterwards in operation certain time length (preset duration) to stop the cleaning of Air Filter itself, it is able to ascend Air Filter
The intelligence and automation of itself cleaning, keep the cleaning of Air Filter itself more convenient and smart.
Optionally, as shown in fig. 6, controller receives dedusting mode instruction, and air pump is controlled according to dedusting mode instruction
Opening and closing includes:
Step 213: controller receives hand-driven dust mode instruction, and control air pump is opened.
Step 214: controller receives hand-driven dust mode instruction again, and control air pump is closed.
Air Filter itself cleaning is manually controlled using controller, air pump is enable to open or close according to operational order
It closes, improves operator to the freedom degree of Air Filter itself cleaning control, and be easy to implement long-range control, operator is facilitated to make
With.
The another aspect of the embodiment of the present invention provides a kind of engine pack, comprising: engine, cover and above-mentioned
Air Filter, Air Filter and cover are enclosed shell, and engine is located in shell.Engine can be provided by the Air Filter
Protection, and itself can be cleared up.
The another aspect of the embodiment of the present invention, provides a kind of excavator, including above-mentioned engine pack.It can be by this
The structure of Air Filter carries out proofing dust and protecting to the engine of excavator, and its own can be cleared up, and be avoided to engine radiating
Generate adverse effect.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of Air Filter characterized by comprising panel and snorkel, be formed on the panel it is mesh-structured, it is described
The both ends of snorkel are fixedly connected with the same face of the panel respectively, towards described mesh-structured on the side wall of the snorkel
Direction be formed with through-hole, be provided with air inlet on the snorkel, the snorkel is used to pass through the air inlet and air pump
Connection.
2. Air Filter as described in claim 1, which is characterized in that the shape of the panel is rectangle, and the snorkel includes
Two, two snorkels are interconnected along two diagonal lines setting of the panel and in point of intersection respectively, the air inlet
Mouthful it is located at the intersection point, the through-hole is provided with multiple, and multiple through-holes are uniformly distributed along the extending direction of the snorkel.
3. Air Filter as described in claim 1, which is characterized in that the snorkel includes multiple first pipes and multiple second
Pipe, multiple first pipes and multiple second pipes intersect to form lattice structure, and multiple first pipes and multiple described
It is interconnected two-by-two between second pipe.
4. Air Filter as claimed in claim 3, which is characterized in that multiple first pipes are parallel to each other, and multiple described second
Pipe is parallel to each other, and first pipe and second pipe are mutually perpendicular to.
5. Air Filter as described in claim 1, which is characterized in that the snorkel has multiple, and the snorkel is end to end
Connection forms pipe chain, and the extending direction of two neighboring snorkel has angle.
6. Air Filter as claimed in claim 5, which is characterized in that the angle is 90 degree.
7. such as Air Filter described in claim 5 or 6, which is characterized in that the air inlet is located at least one end of the pipe chain.
8. Air Filter as claimed in claim 5, which is characterized in that the end of the snorkel is connected to the panel phase
Pair both ends, and the angle is 45 degree.
9. a kind of engine pack characterized by comprising engine, cover and as described in any one of claim 1 to 8
Air Filter, the Air Filter and the cover be enclosed shell, and the engine is located in the shell.
10. a kind of excavator, which is characterized in that including engine pack as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910829833.1A CN110508064A (en) | 2019-09-03 | 2019-09-03 | Air Filter, engine pack and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910829833.1A CN110508064A (en) | 2019-09-03 | 2019-09-03 | Air Filter, engine pack and excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110508064A true CN110508064A (en) | 2019-11-29 |
Family
ID=68630639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910829833.1A Pending CN110508064A (en) | 2019-09-03 | 2019-09-03 | Air Filter, engine pack and excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110508064A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112370891A (en) * | 2020-11-16 | 2021-02-19 | 绍兴市上虞区理工高等研究院 | Ventilation device |
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| EP2850987A2 (en) * | 2005-10-11 | 2015-03-25 | Black & Decker Inc. | Gas concrete saw filtration system |
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| CN107520220A (en) * | 2017-09-22 | 2017-12-29 | 苏州绣薇纺织整理自动化有限公司 | A kind of weaving loom that can regularly clear up cotton-wool |
| CN108479203A (en) * | 2018-04-10 | 2018-09-04 | 佛山市三水万瑞达环保科技有限公司 | A kind of mute dust-extraction unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0391969A4 (en) * | 1987-12-07 | 1991-06-05 | Robert E. Frey | Self-cleaning screening device |
| EP2850987A2 (en) * | 2005-10-11 | 2015-03-25 | Black & Decker Inc. | Gas concrete saw filtration system |
| WO2008046548A1 (en) * | 2006-10-17 | 2008-04-24 | Forschungszentrum Karlsruhe Gmbh | Filter system having cleaning device |
| CN101987573A (en) * | 2009-07-29 | 2011-03-23 | 日立建机株式会社 | Installation structure for dustproof net |
| CN102614732A (en) * | 2012-04-05 | 2012-08-01 | 广州迪森热能技术股份有限公司 | Biomass high-temperature dust catcher |
| CN205001088U (en) * | 2014-12-24 | 2016-01-27 | Jvl工程有限公司 | A burner that is used for burner's air filter screen and adopts it |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112370891A (en) * | 2020-11-16 | 2021-02-19 | 绍兴市上虞区理工高等研究院 | Ventilation device |
| CN112370891B (en) * | 2020-11-16 | 2022-05-13 | 绍兴市上虞区理工高等研究院 | Ventilation device |
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