CN217662151U - Filtering component and air purification processing apparatus - Google Patents
Filtering component and air purification processing apparatus Download PDFInfo
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- CN217662151U CN217662151U CN202221552451.2U CN202221552451U CN217662151U CN 217662151 U CN217662151 U CN 217662151U CN 202221552451 U CN202221552451 U CN 202221552451U CN 217662151 U CN217662151 U CN 217662151U
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Abstract
The utility model relates to a filtering component and air purification processing apparatus. The filter assembly is used for being arranged in the filter box for use, the filter assembly divides an inner cavity of the filter box into a dust chamber and a clean chamber, the filter assembly comprises a frame and a filter body, and the filter body is arranged on the frame; the filter body comprises a first filter element and a second filter element, the first filter element and the second filter element are stacked along the direction from the dust chamber to the clean chamber, and the first filter element and the second filter element are both in corrugated structures. Waste gas flows through the in-process of clean room from the dirt room, can be successively filtered through twice by first filter element and second filter element, improves the dust filtering effect, guarantees to discharge to the air in the environment cleaner. Because the first filter element and the second filter element adopt the corrugated structure design, the space is saved, the filter area can be greatly increased, and the waste gas filtering efficiency is improved.
Description
Technical Field
The utility model relates to an air purification handles technical field, especially relates to a filtering component and air purification processing apparatus.
Background
At present, in industries such as steel, smelting, chemical industry and the like, waste gas pollution control is an important index for measuring environmental performance rating of enterprises, for example, in the steel industry, steel plants are large households with air pollution, a large amount of smoke dust, particulate matters, carbon dioxide, sulfur dioxide and other polluted waste gas can be generated in each process of steel making, the polluted waste gas can be subjected to environmental protection treatment by adopting filtering equipment, filtering elements commonly used in the existing filtering equipment are filtering cotton, filtering bags and the like, and the filtering elements are poor in filtering effect, large in size and large in occupied space.
SUMMERY OF THE UTILITY MODEL
Based on this, it is necessary to provide a filter assembly and an air purification processing apparatus, and the problem that the prior art is poor in filtering effect, large in size and large in occupied space is solved.
On one hand, the application provides a filter assembly for being installed in a filter box for use, the filter assembly divides an inner cavity of the filter box into a dust chamber and a clean chamber, and is characterized in that,
the filter assembly comprises a frame and a filter body, and the filter body is arranged on the frame; the filter body comprises a first filter element and a second filter element, the first filter element and the second filter element are stacked along the direction from the dust chamber to the clean chamber, and the first filter element and the second filter element are both in corrugated structures.
The filter assembly is applied to an air purification and filtration device and is specifically arranged in a filter box. During production, when the gathering of factory building top has the waste gas of loss, air purification processing apparatus gets into the filter box with waste gas suction, and waste gas passes the clean room of filter component flow direction from the dirt room, and the dust is filtered the separation by filter component, and clean air is passed through the air exit pump drainage from clean room by the air exhauster to outdoor, avoids causing the pollution to the environment. Waste gas flows through the in-process of clean room from the dirt room, can be successively filtered through twice by first filter element and second filter element, improves the dust filtering effect, guarantees to discharge to the air in the environment cleaner. Because the first filter element and the second filter element adopt the design of a corrugated structure, the space is saved, the filter area can be greatly increased, and the waste gas filtering efficiency is improved.
The technical solution of the present application is further described below:
in one embodiment, an airflow channel is formed between the first filter element and the second filter element at a spacing, the airflow channel is used for communicating with a dust cleaning assembly, and the dust cleaning assembly is used for blowing air into the airflow channel.
In one embodiment, the ash cleaning assembly comprises an air source, a pulse electromagnetic valve and a spray pipe, wherein the air source is communicated with an air inlet pipe orifice of the spray pipe, an air outlet pipe orifice of the spray pipe is communicated with the air flow channel, and the pulse electromagnetic valve is arranged in the spray pipe.
In one embodiment, the ash removal assembly further comprises a pressurized air bag, and the pressurized air bag is connected between the pulse electromagnetic valve and the spray pipe.
In one embodiment, the frame includes a first support bar connected to one end of the filter body and a second support bar connected to the other end of the filter body.
In one embodiment, the frame further includes a first side frame strip and a second side frame strip, the first side frame strip and the second side frame strip are respectively disposed on the filter body and are connected to each other, and the first side frame strip and the second side frame strip are both connected and fixed to the first support rod and the second support rod.
In one embodiment, the frame further comprises a sealing member disposed on the first support bar.
In one embodiment, the seal is provided as a sealing rubber ring.
In one embodiment, a surface of at least one of the first filter element and the second filter element is provided with a protective coating.
In another aspect, the present application further provides an air purification treatment device, which includes the filter assembly as described above.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a plant air purification treatment system according to an embodiment of the present disclosure;
FIG. 2 is a side elevational view of the air purification treatment apparatus of FIG. 1;
FIG. 3 is a schematic structural diagram of an air purification treatment device according to the present application;
FIG. 4 is a schematic view of the structure of FIG. 3 from another view angle;
FIG. 5 is a schematic view of the configuration of the blowthrough assembly of FIG. 4;
FIG. 6 is a schematic view of a filter assembly of the present application;
FIG. 7 is a schematic view of the structure of FIG. 6 from another perspective;
fig. 8 is a schematic structural diagram of fig. 6 from another view angle.
Description of reference numerals:
100. a plant air purification treatment system; 10. a control system; 20. an air purification treatment device; 21. a dust collection cover; 22. a filter box; 221. a dust chamber; 222. a clean room; 23. a filter assembly; 231. a frame; 2311. a first support bar; 2312. a second support bar; 2313. a first side frame strip; 2314. a second frame strip; 2315. a seal member; 232. a filter body; 2321. a first filter member; 2322. a second filter member; 233. an air flow channel; 24. an exhaust fan; 25. a soot cleaning assembly; 251. a gas source; 252. a pulse solenoid valve; 253. a nozzle; 254. pressurizing the air bag; 30. a dust collecting device; 31. a dust collecting hopper; 32. a level gauge; 33. an ash discharge valve; 34. a circular blowing assembly; 341. a support; 342. a blowing nozzle; 40. a detection device; 41. a differential pressure sensor; 42. a pressure sensor; 50. a dust storage device; 51. a dust conveying pipeline; 52. a cyclone blanking device; 53. a high negative pressure chamber; 54. an air pump; 55. a storage bin; 200. and (5) factory building.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
As shown in fig. 1 to 8, a plant air purification processing system 100 according to an embodiment of the present invention includes: the system comprises a control system 10, at least one air purification treatment device 20, a dust collection device 30, a detection device 40 and a dust storage device 50.
At least one of the air purification treatment devices 20 is installed at an air outlet of a roof of the plant 200. Further, in order to improve exhaust emission and filtering efficiency, a plurality of air outlets can be seted up on factory building 200 roof, and air purification processing apparatus 20 is all installed to every air outlet, and a plurality of air purification processing apparatus 20 purify waste gas simultaneously and discharge the work. For example, this embodiment shows an embodiment in which 10 air purification treatment devices 20 are simultaneously used for operation.
The air purification treatment device 20 is electrically connected with the control system 10; the dust collecting device 30 is communicated with the air purification treatment device 20 for collecting dust generated by filtering, and the dust collecting device 30 is electrically connected with the control system 10; the detection device 40 is electrically connected with the air purification treatment device 20; the dust storage device 50 is communicated with the dust collecting device 30 through a dust conveying pipeline 51, and the dust storage device 50 is electrically connected with the control system 10.
In summary, the implementation of the technical solution of the present embodiment has the following beneficial effects: the plant air purification treatment system 100 of the above-mentioned solution is applied to a plant 200 for production in fields such as steel, chemical industry, and the like, and specifically, the assembly integration body of the air purification treatment device 20, the dust collection device 30, and the detection device 40 is directly installed at the air outlet of the roof of the plant 200. During production, when the top of the factory building 200 gathers the dissipated waste gas, the air purification treatment device 20 sucks the waste gas, purifies and filters the waste gas, and then discharges the clean air to the external environment from the air outlet, and the dust generated by filtering is firstly collected in the dust collection device 30, and can be pumped away through the dust conveying pipeline 51 by the dust storage device 50, so as to realize the centralized treatment of the dust. In the process, according to the real-time monitoring of the detection device 40 on various parameters such as pressure, differential pressure and the like and the feedback to the control system 10, the control system 10 can control the air purification treatment device 20 to always keep the optimal operation condition, and the efficiency and the effect of waste gas coming are improved. Compared with the prior art, the waste gas at the top of the factory building 200 can be cleaned and discharged to the outside, so that the physical and psychological influences of workers in the factory building 200 are avoided, and meanwhile, the discharged outdoor air is clean air after purification treatment, so that harm to surrounding residents and vegetation is avoided.
In some embodiments, the air purification processing device 20 includes a dust hood 21, a filter box 22, a filter assembly 23, and an exhaust fan 24, the dust hood 21 is configured to be installed at the air outlet and is communicated with the air inlet of the filter box 22, the filter assembly 23 is disposed in the filter box 22 and divides the inner cavity of the filter box 22 into a dust chamber 221 and a cleaning chamber 222, the dust chamber 221 and the dust collecting device 30 are respectively communicated with the air inlet, and the exhaust fan 24 is disposed on the filter box 22 and is communicated with the cleaning chamber 222.
When the air extractor 24 is started during operation, the air inlet of the filter box 22 can generate negative pressure suction, so that the waste gas at the top of the plant 200 is pumped into the filter box 22. After the exhaust air flows from the dust chamber 221 to the clean chamber 222 through the filter assembly 23, the dust is filtered and blocked by the filter assembly 23, and the clean air is exhausted from the clean chamber 222 to the outside through the exhaust fan 24 through the exhaust outlet, so that the environment is prevented from being polluted. The dust generated by filtration falls into the dust collecting device under the action of self-weight for temporary storage. The dust cage 21 is provided to better draw the exhaust gas into the filter box 22.
In some embodiments, the filter assembly 23 includes a frame 231 and a filter body 232, and the filter body 232 is disposed on the frame 231. The frame 231 provides a support and fixing for the filter body 232 and enables the filter assembly 23 to be fitted to the filter box 22. The filter 232 has the capability of filtering and purifying the waste gas, and can block the dust, thereby preventing the dust from being discharged to the outside along with the air to cause environmental pollution.
On the basis of the above embodiment, the filter body 232 includes the first filter element 2321 and the second filter element 2322, and the first filter element 2321 and the second filter element 2322 are stacked along the direction from the dust chamber 221 to the cleaning chamber 222. Therefore, in the process that the waste gas entering the filter box 22 from the factory building 200 flows through the cleaning chamber 222 from the dust chamber 221, the waste gas can be filtered by the first filter element 2321 and the second filter element 2322 in sequence for two times, so that the dust filtering effect is improved, and the air discharged to the environment is ensured to be cleaner.
The first filter element 2321 and the second filter element 2322 may be any one of a filter screen, a filter plate, and a filter membrane, and the structure, shape, size, etc. of the two filter elements may be selected according to actual needs. For example, in the present embodiment, the first filter element 2321 and the second filter element 2322 are both of a corrugated structure. And the first filter element 2321 and the second filter element 2322 are both filter paper sheets. The two are designed to be of a corrugated structure, so that the space is saved, the filtering area can be greatly increased, and the waste gas filtering efficiency is improved.
The first filter element 2321 and the second filter element 2322 both adopt nanoscale materials, so that air permeability is good, filtering pressure difference is reduced, internal resistance is small, and reduction of energy consumption is facilitated. In addition, the first filter element 2321 and the second filter element 2322 can also be subjected to oil-proof and water-proof, antistatic and film-covering processes, and the filter element is suitable for various complex working conditions, and the service life and the reliability are greatly improved.
The use proves that the first filter element 2321 and the second filter element 2322 have high filtration efficiency, the filtration efficiency is more than 99.9%, the emission concentration is less than 5mg/m3@0.5m/min, the interception rate of particles with the particle size of more than or equal to 0.5 μm can reach 99.5%, and the interception rate of PM2.5 can reach 99.989%.
However, in actual operation, due to the influence of factors such as the humidity of the working environment, the humidity of the exhaust gas is relatively high, and dust is blocked by the filter assembly 23 and is easily adhered and accumulated on the surface of the filter assembly 23, so that the filter assembly 23 is blocked and the filtering capacity is reduced. At this point, the filter assembly 23 needs to be subjected to a dust removal process to ensure its cleanliness. If the manual regular cleaning mode is adopted, the problems of low efficiency, shutdown, influence on working efficiency and the like exist. In view of this, in some embodiments, an airflow channel 233 is formed between the first filter element 2321 and the second filter element 2322 at a distance, the air purification treatment device 20 further includes an ash removal component 25, the ash removal component 25 is communicated with the airflow channel 233, and the ash removal component 25 is used for blowing air into the airflow channel 233. Therefore, the ash removal component 25 blows air into the air flow channel 233, and the air flow can blow off the dust on the surfaces of the first filter element 2321 and the second filter element 2322, so as to achieve the self-cleaning effect, and the cleaning efficiency is high and the cleaning effect is good.
In some embodiments, the detecting device 40 includes a differential pressure sensor 41, the differential pressure sensor 41 is disposed on an inner wall of the filter box 22 between the dust chamber 221 and the clean chamber 222, and the differential pressure sensor 41 is electrically connected to the control system 10. The differential pressure sensor 41 can detect the pressure difference between the dust chamber 221 and the cleaning chamber 222 in real time, and when the pressure difference reaches or even exceeds a preset value, which indicates that the filter assembly 23 is blocked, a signal can be sent to the control system 10 to start the operation of the ash cleaning assembly 25. In this way, the ash cleaning component 25 is not normally opened to cause energy waste, and the filtering component 23 can be cleaned in time.
Further, the detecting device 40 further includes a pressure sensor 42, and the pressure sensor 42 is disposed on an inner wall of the dust chamber 221 and electrically connected to the control system 10. The pressure sensor 42 is used to detect a constant compressed air pressure and thereby feed back a signal to the control system 10 to control the ash removal assembly 25 to blow clean the filter assembly 23 at more appropriate operating parameters.
On the basis of the above embodiment, the frame 231 includes the first supporting rod 2311 and the second supporting rod 2312, the first supporting rod 2311 is connected to one end of the filter body 232, and the second supporting rod 2312 is connected to the other end of the filter body 232. The first support bar 2311 and the second support bar 2312 are used for assembling and fixing the filter body 232. The flow direction of the airflow channel 233 is from the first support bar 2311 to the second support bar 2312. Wherein, the first supporting rod 2311 is directly connected with the ash removing component 25, the first supporting rod 2311 adopts a venturi structure design, an air cavity is formed inside the venturi structure design, and blowing air can be well introduced into the air flow channel 233 inside the filter component 23.
Optionally, the first supporting rod 2311 and the second supporting rod 2312 are made of polyurethane materials, so that the wear resistance is good, the deformation and the aging are not easy to occur, the service life is long, in addition, the injection molding process can be adopted for processing and forming, and the manufacturing cost is low.
Further, the frame 231 further includes a first frame strip 2313 and a second frame strip 2314, the first frame strip 2313 and the second frame strip 2314 are respectively disposed at two opposite sides of the filter body 232, and the first frame strip 2313 and the second frame strip 2314 are both fixedly connected to the first support rod 2311 and the second support rod 2312. The first and second frame strips 2313 and 2314 are connected to the filter assembly 23, so that the filter assembly 23 can be further fixed and supported, and the filter assembly 23 is prevented from being deformed when the blowing air with high pressure passes through the air flow channel 233.
Alternatively, the first and second side frame strips 2313 and 2314 are made of reinforced PVC, and may be formed using a base mold, which is highly durable and highly machinable.
In addition, the frame 231 further includes a sealing member 2315, and the sealing member 2315 is disposed on the first support bar 2311. The seal 2315 may improve the sealing performance of the filter assembly 23 after installation, and prevent leakage of the blown air from affecting the self-cleaning performance of the filter assembly 23. Alternatively, seal 2315 may be, but is not limited to, a rubber ring or the like.
In operation, dust generated by the filtering of the filtering component 23 will fall into the dust collecting device below under the action of the air flow and the self-weight. In some embodiments, the dust collecting device 30 includes a dust hopper 31, a level gauge 32, and an ash discharge valve 33, wherein a dust inlet of the dust hopper 31 is communicated with the dust chamber 221, the ash discharge valve 33 is disposed at an ash discharge port of the dust hopper 31, and the level gauge 32 is disposed in the dust hopper 31 and is disposed near the dust inlet. The dust collecting hopper 31 is used for collecting and temporarily storing falling dust, the level meter 32 is used for detecting the amount of the dust collected in the dust collecting hopper 31, and when a preset value is reached, in order to avoid dust overflow, the control system 10 starts the dust discharging valve 33, so that the dust in the dust collecting hopper 31 can be discharged into the dust storage device 50.
In this embodiment, the dust hopper 31 is designed to have a round top and a square bottom, and the inner wall of the dust hopper 31 is tapered and smooth, so that dust can be discharged from the dust hopper 31 by sliding under its own weight.
Further, in order to prevent the dust under the dust hopper 31 from being solidified and unable to be discharged smoothly under the influence of its own weight, in some embodiments, the dust collecting device 30 further includes a ring blowing assembly 34, and the ring blowing assembly 34 is disposed in the dust hopper 31 and used for blowing the dust. The dust is blown up, so that the consolidated dust is loosened, and the consolidated dust can be smoothly discharged from the dust hopper 31.
Preferably, in some embodiments, the circular blowing assembly 34 includes a support 341 and at least two blowing nozzles 342, and at least two blowing nozzles 342 are circumferentially disposed on the support 341. At least two air nozzles can thus blow air from different directions into the consolidated dust, thereby better loosening the dust and allowing the dust to be completely removed from the dust hopper 31.
In addition, on the basis of any of the above embodiments, the dust storage device 50 includes a dust conveying pipe 51, a cyclone blanking device 52, a high negative pressure chamber 53, a suction pump 54 and a storage bin 55, the cyclone blanking device 52 is communicated with the high negative pressure chamber 53 and is arranged on the storage bin 55, the dust conveying pipe 51 is communicated with the dust collection device 30 and the cyclone blanking device 52 at two ends, respectively, and the high negative pressure chamber 53 is communicated with the suction pump 54.
When the dust collected in the dust hopper 31 is about to fill up, the control system 10 controls the air pump 54 to start, and simultaneously opens the dust valve 33, so that the dust in the dust hopper 31 flows into the cyclone blanking device 52 and the high negative pressure chamber 53 along the dust conveying pipeline 51 under the air suction effect, and then falls into the storage bin 55 after being separated from the air, and is collected by the storage bin 55 and is convenient for regular cleaning.
In this embodiment, the control system 10 is composed of a PLC control cabinet, an upper computer, and a general control room. The PLC in the control cabinet is used for collecting and analyzing the temperature, the dust concentration, the pressure difference, the pressure, the material level detection and the like on each air purification treatment device 20, all execution components such as an exhaust fan 24, a pulse electromagnetic valve 252, a circular blowing assembly 34, an ash discharge valve 33 and the like on the air purification treatment device 20 are controlled by a PLC control program, and the required actions such as dust collection and the like are carried out according to the operation of the exhaust fan 24, the waste gas enters a filter box 22, the waste gas is filtered by a filter assembly 23, an ash removal assembly 25 operates, the material level detection is linked with the operation of an intelligent ash discharge and delivery system, a cyclone blanking device 52, a high negative pressure chamber 53 and a storage bin 55, and the actions are executed in a linked mode. The running equipment in the air purification treatment device 20 should be provided with a fault alarm device, when the equipment fails, the controller immediately sends out a fault alarm signal and sends the fault alarm signal to the operating room, and display alarms are arranged on the main control cabinet and the upper computer. If the fault signal is not eliminated after 5 minutes, the corresponding fault running equipment can be automatically powered off and stopped running. The operation of other equipment which normally works is not influenced.
The PLC controller uploads the collected data information of the instruments and meters, the running state information of the control execution component, error alarm information and the like to an upper computer for overall real-time dynamic monitoring, records the data error alarm information and the like of each instrument uploaded by the storage controller into a database, and can call and check in real time. Realize full-automatic management and control, managers can look over and send corresponding control information alone to PLC on the host computer according to all kinds of information that the PLC controller uploaded in total accuse room and carry out the control to air purification unit 20. And intelligent energy-saving group management control is realized.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.
Claims (10)
1. A filter component is used for being arranged in a filter box for use, the filter component separates the inner cavity of the filter box into a dust chamber and a clean chamber, and is characterized in that,
the filter assembly comprises a frame and a filter body, and the filter body is arranged on the frame; the filter body comprises a first filter element and a second filter element, the first filter element and the second filter element are stacked along the direction from the dust chamber to the clean chamber, and the first filter element and the second filter element are both in corrugated structures.
2. The filter assembly of claim 1, wherein an airflow channel is formed at a distance between the first filter element and the second filter element, the airflow channel is used for communicating with a dust cleaning assembly, and the dust cleaning assembly is used for blowing air into the airflow channel.
3. The filter assembly of claim 2, wherein the ash removal assembly comprises a gas source, a pulse solenoid valve, and a nozzle, the gas source is in communication with an inlet orifice of the nozzle, an outlet orifice of the nozzle is in communication with the gas flow channel, and the pulse solenoid valve is disposed in the nozzle.
4. The filter assembly of claim 3, wherein the ash removal assembly further comprises a pressurized air bag connected between the pulse solenoid valve and the nozzle.
5. The filter assembly of claim 4, wherein the frame includes a first support bar and a second support bar, the first support bar being connected to one end of the filter body and the second support bar being connected to the other end of the filter body.
6. The filter assembly of claim 5, wherein the frame further comprises a first side frame strip and a second side frame strip, the first side frame strip and the second side frame strip are respectively disposed on opposite sides of the filter body, and the first side frame strip and the second side frame strip are fixedly connected to the first support bar and the second support bar.
7. The filter assembly of claim 6, wherein the frame further comprises a seal disposed on the first support bar.
8. The filter assembly of claim 7, wherein the seal is configured as a sealing grommet.
9. The filter assembly of claim 1, wherein a surface of at least one of the first filter element and the second filter element is provided with a protective coating.
10. An air cleaning device comprising a filter assembly according to any one of claims 1 to 9.
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