CN117861344A - Purification method for brush roller ash removal assembly by using industrial waste gas dust removal flocculation device - Google Patents
Purification method for brush roller ash removal assembly by using industrial waste gas dust removal flocculation device Download PDFInfo
- Publication number
- CN117861344A CN117861344A CN202410216504.0A CN202410216504A CN117861344A CN 117861344 A CN117861344 A CN 117861344A CN 202410216504 A CN202410216504 A CN 202410216504A CN 117861344 A CN117861344 A CN 117861344A
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- China
- Prior art keywords
- assembly
- brush roller
- filter cartridge
- dust
- 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.)
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- 239000000428 dust Substances 0.000 title claims abstract description 84
- 239000002440 industrial waste Substances 0.000 title claims abstract description 70
- 239000007789 gas Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000000746 purification Methods 0.000 title claims abstract description 11
- 238000005189 flocculation Methods 0.000 title abstract description 12
- 230000016615 flocculation Effects 0.000 title abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract description 39
- 238000001914 filtration Methods 0.000 claims abstract description 38
- 244000144992 flock Species 0.000 claims abstract description 36
- 238000001125 extrusion Methods 0.000 claims abstract description 17
- 238000013020 steam cleaning Methods 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims abstract description 9
- 230000001680 brushing effect Effects 0.000 claims abstract description 4
- 230000003068 static effect Effects 0.000 claims abstract description 3
- 238000010410 dusting Methods 0.000 claims description 9
- 239000000356 contaminant Substances 0.000 claims description 6
- 230000003311 flocculating effect Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000003825 pressing Methods 0.000 description 9
- 238000005520 cutting process Methods 0.000 description 7
- 238000010926 purge Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 239000004071 soot Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- RSMUVYRMZCOLBH-UHFFFAOYSA-N metsulfuron methyl Chemical compound COC(=O)C1=CC=CC=C1S(=O)(=O)NC(=O)NC1=NC(C)=NC(OC)=N1 RSMUVYRMZCOLBH-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
-
- 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
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/26—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies rotatable
-
- 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
- B01D46/42—Auxiliary equipment or operation thereof
-
- 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
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
-
- 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
- B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
- B01D46/681—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
-
- 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
- B01D46/72—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 backwash arms, shoes or nozzles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a purification method for a brush roller ash removal assembly of an industrial waste gas dust removal flocculation device, and belongs to the technical field of industrial waste gas dust removal flocculation. The purification method comprises the following steps: brushing off dust flocks through the contact of a brush roller on the brush roller ash cleaning component and the filter screen; extruding and forming the dust batting through an extruding assembly arranged below the brush roller ash cleaning assembly; the steam spray pipe in the steam cleaning assembly keeps static while the filter cartridge filtering assembly rotates, steam is blown to the filter cartridge part provided with the brush roller ash cleaning assembly, and the brush roller ash cleaning assembly, the extrusion assembly and the lower half part of the filter cartridge form a closed dust collecting cavity. The brush roll ash removal assembly is disposed below the filter cartridge filtration assembly and in at least a portion of the locations the brush roll ash removal assembly is in contact with the filter cartridge filtration assembly to facilitate the removal of dust batting from the filter cartridge filtration assembly.
Description
The present application is a divisional application based on patent application with application date 2022, 09/202211103922.6 and the name of "industrial waste gas dust-removing and flocculating device and purifying method".
Technical Field
The embodiment of the invention relates to the technical field of industrial waste gas dust removal batting, in particular to a purification method performed by a brush roller ash removal assembly of an industrial waste gas dust removal batting device.
Background
For example, the waste gas component of the industrial setting machine mainly comprises a large amount of smoke, dust and flock, and is mixed with a large amount of oil mist, polyphenyl organic matters, printing and dyeing auxiliary agents and other components, and the components are accumulated on the inner wall of the waste gas discharge pipeline for a long time. Not only malodorous gas is generated, but also fire is more easy to cause, so that the printing and dyeing enterprises must manually clean the exhaust emission pipeline regularly, which results in high cost and high risk.
At present, a filter screen is added to an air outlet of an exhaust gas discharge pipeline, and cleaning is carried out every day.
The method has small filtering area and is extremely easy to block, so that the smoke of the setting machine is not smooth, and the fire risk is increased.
Because the filter screen is installed in the top of forming machine and is the high temperature discharge port, manual cleaning operation environment is abominable, causes the scald easily.
It is desirable to provide an industrial waste gas dust removal batting device for intercepting a batting in waste gas such as an industrial waste gas discharge pipeline and automatically collecting the batting and an automatically cleaning filter device for generating clean air.
Disclosure of Invention
The invention aims to provide an industrial waste gas dust removal flocculation device and a purification method. In the invention, the dust flock in the industrial waste gas can be removed more effectively by rotating the filter cartridge filtering component, and then the dust flock on the industrial waste gas is brushed off and collected by the brush roller ash cleaning component.
In a first aspect of the present invention, there is provided a cleaning method using a brush roll ash removal assembly of an industrial waste gas dusting batt device, the cleaning method comprising the steps of:
industrial waste gas to be purified enters the shell through the air inlet;
filtering dust flocks in the industrial waste gas through a filter screen of the filter cartridge filter assembly which rotates continuously, wherein the dust flocks are adhered to the filter screen;
brushing off dust flocks through the contact of a brush roller on the brush roller ash cleaning component and the filter screen;
removing contaminants on the filter screen by a steam cleaning assembly disposed in the cartridge filter assembly;
extruding and forming the dust batting through an extruding assembly arranged below the brush roller ash cleaning assembly;
the steam spray pipe in the steam cleaning assembly keeps static and motionless while the filter cartridge filtering assembly rotates, blows steam towards the filter cartridge part provided with the brush roller ash cleaning assembly,
the brush roll ash removal assembly, the extrusion assembly and the lower half part of the filter cylinder form a closed dust collection cavity;
the part except the dust collecting cavity in the shell is full of industrial waste gas, and the industrial waste gas purified by the filter cartridge filtering component flows out through the through holes on the movable ring rail;
wherein the brush roll ash removal assembly is disposed below the filter cartridge filtration assembly and at least partially in contact with the filter cartridge filtration assembly to facilitate the removal of dust batting from the filter cartridge filtration assembly.
In an embodiment of the first aspect of the present invention, the brush roll ash removal assembly includes a brush roll, a brush roll connecting shaft, a seated bearing, an adjusting block, a cleaning brush, a first baffle, a second baffle, a baffle adjusting plate, and a bottom plate,
the brush roller is rotatably arranged on a brush roller connecting shaft which is arranged on the bearing with the seat,
the bearing with the seat and the brush roller connecting shaft are arranged on the adjusting block together.
In an embodiment of the first aspect of the invention, a seated bearing is provided on the other side of the base plate, on which a brush roller connection shaft is provided, on which brush roller connection shaft a brush roller is provided, which brush roller connection shaft connects the brush roller and allows the brush roller to be driven in rotation.
In an embodiment of the first aspect of the invention, the seated bearing is connected with the base plate by an adjusting block in an adjustable height;
a cleaning brush is arranged on the bottom plate at a position close to the brush roller.
In an embodiment of the first aspect of the invention, a first baffle is also provided on the bottom plate or on the adjusting block in the direction of the brush roll outwards, to allow the dust flock in the lower part of the right end of the filter cartridge to fall into the squeezing assembly to the greatest extent.
In an embodiment of the first aspect of the present invention, the first baffle is provided on the adjustment block such that the height of the first baffle is adjusted accordingly while the height of the adjustment block is adjusted.
In an embodiment of the first aspect of the present invention, a baffle adjusting plate and a second baffle fixedly connected to the baffle adjusting plate are provided at one end of the bottom plate, the second baffle is spaced from the lower portion of the filter cartridge by a gap, thereby allowing the filter cartridge to rotate and blocking dust flock on the filter cartridge to the greatest extent and falling into a pressing assembly provided below;
the filter cartridge of the cartridge filter assembly rotates counterclockwise and the brush roll contacts the filter cartridge and rotates clockwise, flocculating the dust.
In an embodiment of the first aspect of the invention, the first and second baffles are provided in the shape of outwardly turned arcuate plates and they match the shape of the bottom of the filter cartridge to form a closed dust collection cavity.
In an embodiment of the first aspect of the present invention, the brush roller ash cleaning assembly is in an upwardly open cavity shape as a whole, and the radian of the first baffles at two sides is approximately matched with that of the filter cartridge;
through the open cavity, the dust flock brushed off the filter cartridge falls into a press assembly, which is a screw extruder, and is extruded.
In an embodiment of the first aspect of the invention, the middle of the bottom plate is hollow, and the first baffle, the brush roll, the bottom plate, the second baffle and the baffle adjusting plate form a closed dust collecting cavity with the pressing assembly arranged below.
According to an aspect of the present invention, there is provided an industrial waste gas dust-removing air-conditioning apparatus into which industrial waste gas is introduced from an air inlet of the industrial waste gas dust-removing air-conditioning apparatus and is discharged from an air outlet of the industrial waste gas dust-removing air-conditioning apparatus after being purified, the industrial waste gas dust-removing air-conditioning apparatus comprising:
the shell is provided with the air inlet and the air outlet;
the filter cartridge filtering component is arranged in the shell, the periphery of the filter cartridge filtering component is communicated with the air inlet, and the cavity in the filter cartridge filtering component is communicated with the air outlet;
the brush roller ash removal assembly is arranged below the filter cartridge filtering assembly and is used for rolling dust flocks on the filter cartridge filtering assembly.
In some embodiments, the cartridge filtration assembly comprises:
a filter cartridge;
a screen attached to the filter cartridge;
a filter cartridge drive plate positioned on one end of the filter cartridge and fixedly connected to the filter cartridge;
a driving shaft which is positioned on the center of the filter cartridge driving plate and drives the filter cartridge to rotate;
a driven annular rail on the other end of the cartridge.
In some embodiments, the driven annular rail is annular, and the middle of the driven annular rail is provided with a hollow structure;
the center of the driven ring rail is provided with a center hole, and a plurality of through holes are formed around the center hole;
the through holes are distributed in a shape of a Chinese character 'mi' or a quincuncial pattern.
In some embodiments, a sealing structure is further provided between the driven annular rail and the inner wall of the filter cartridge, wherein the sealing structure comprises a sealing ring or a graphite packing;
and a filter cylinder inner support is arranged in the filter cylinder and is arranged in a ring shape along the longitudinal direction of the filter cylinder.
In some embodiments, the brush roll ash removal assembly includes:
a bottom plate;
a brush roller rotatably disposed on the base plate;
the brush roll connecting shaft is rotatably arranged on the brush roll connecting shaft;
the brush roll connecting shaft is arranged on the bearing with the seat;
the bearing with the seat is arranged on the adjusting block;
the first baffle is arranged on the adjusting block;
the cleaning brush is arranged on the bottom plate and corresponds to the brush roller.
In some embodiments, the brush roll ash removal assembly further comprises a baffle adjusting plate arranged at a position corresponding to the brush roll and a second baffle arranged on the baffle adjusting plate;
the shapes of the first baffle plate and the second baffle plate are matched with the shape of the filter cartridge filtering component;
the first baffle and the second baffle are respectively arranged into an outwards turned arc shape,
the middle of the bottom plate is hollow, and the first baffle, the brush roller, the bottom plate, the second baffle and the baffle adjusting plate form a closed dust collecting cavity with the extrusion assembly arranged below.
In some embodiments, the industrial waste dusting batt device further includes a steam cleaning assembly disposed within the cartridge filter assembly and configured to clean contaminants adhering to the cartridge filter assembly by spraying steam;
the extrusion assembly is arranged below the brush roller ash cleaning assembly and used for extruding brushed dust flocks.
In some embodiments, the steam cleaning assembly includes:
a steam nozzle;
a plurality of steam holes arranged on the steam spray pipe;
the inner wire connector is fixedly connected with the driven ring rail of the filter cartridge filtering assembly, and one end of the steam spray pipe is connected with the inner wire connector in a penetrating way;
one end of the steam inlet connecting pipe is connected with the internal thread joint;
the other end of the steam inlet connecting pipe is connected with the steam valve;
the other end of the steam spray pipe is movably connected with the bearing and is connected with a driving shaft of the filter cartridge filtering assembly;
the steam spray pipe shaft seat is fixedly connected with the bearing;
the steam spray pipe blocking shaft is arranged at the tail end of the steam spray pipe shaft seat.
In some embodiments, the steam nozzle includes a first straight tube segment, a second downwardly extending tube segment connected to the first tube segment, a third straight tube segment connected to the second tube segment, a fourth upwardly extending tube segment connected to the third tube segment, and a fifth straight tube segment connected to the fourth tube segment and extending outwardly,
wherein an included angle of 60-170 degrees is formed between the second pipe section and the third pipe section and between the fourth pipe section and the third pipe section; or alternatively
The second pipe section and the fourth pipe section are connected with the third pipe section through an arc or a slow bent pipe.
In some embodiments, a steam strut is disposed between the second tube segment and the fourth tube segment;
the steam stay bar is arranged at the position of the second pipe section close to the first pipe section or the position of the fourth pipe section close to the fifth pipe section;
and the extension lines of the second pipe section and the fourth pipe section are respectively perpendicular to the third pipe section.
According to another aspect of the present invention, there is provided a purification method using the above-mentioned industrial waste gas dust-removing wadding device, the method comprising the steps of:
industrial waste gas to be purified enters the shell through the air inlet;
filtering dust flocks in the industrial waste gas through a filter screen of the filter cartridge filter assembly which rotates continuously, wherein the dust flocks are adhered to the filter screen;
the brush roller on the brush roller ash cleaning component is contacted with the filter screen to brush off dust flock.
In some embodiments, the method further comprises removing contaminants on the filter screen by a steam purge assembly disposed in the filter cartridge filtration assembly;
the dust batting is extruded and molded through an extrusion assembly arranged below the brush roller ash cleaning assembly.
In some embodiments, the steam nozzle in the steam cleaning assembly remains stationary while the cartridge filter assembly rotates, blows steam toward the cartridge portion where the brush roll ash assembly is disposed,
the brush roller ash removal assembly, the extrusion assembly and the lower half part of the filter cylinder form a closed dust collection cavity.
In some embodiments, the part except the dust collecting cavity in the shell is full of industrial waste gas, and the industrial waste gas purified by the filter cartridge filtering component flows out from the through holes on the movable ring rail.
Other objects and advantages of the present invention will become apparent from the following description of embodiments of the present invention, which is to be read in connection with the accompanying drawings, and may assist in a comprehensive understanding of the present invention.
Drawings
The invention will be described in further detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of the overall structure of an industrial waste gas dust-collecting wadding device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the industrial waste gas dust-collecting wadding device of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the industrial waste gas dusting wadding apparatus shown in FIG. 2 after cutting along line A-A;
FIG. 4 is a left side view of the industrial waste air dust removal batting device shown in FIG. 2;
FIG. 5A is an overall view of a cartridge filtration assembly in the industrial waste dusting batt device shown in FIG. 3;
FIG. 5B is a perspective view of the cartridge filtration assembly of FIG. 5A;
FIG. 5C is a left side view of the cartridge filtration assembly of FIG. 5A;
FIG. 5D is a right side view of the cartridge filtration assembly of FIG. 5A;
FIG. 5E is a cross-sectional view of the cartridge filter assembly shown in FIG. 5D after cutting along line E-E;
FIG. 6 is a cross-sectional structural view of the industrial waste air dust-collecting batt device shown in FIG. 4 after cutting along line B-B;
FIG. 7 is a schematic view of the brush roll ash removal assembly of FIG. 3;
FIG. 8 is a perspective view of the brush roll ash removal assembly of FIG. 7;
fig. 9 is a cross-sectional structural view of the industrial waste gas dust-collecting batt device shown in fig. 2 after cutting along the line D-D.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of embodiments of the present invention with reference to the accompanying drawings is intended to illustrate the general inventive concept and should not be taken as limiting the invention.
Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details.
Referring to fig. 1-3, an industrial waste air dusting batt device according to one embodiment of the present invention is shown.
Industrial waste gas enters from an air inlet 501 of the industrial waste gas dust removal flocculation device and is discharged from an air outlet 502 of the industrial waste gas dust removal flocculation device after being purified. The industrial waste gas dedusting wadding device comprises a shell 500, a filter cartridge filtering assembly 100, a brush roll ash cleaning assembly 200 and the like. The housing 500 is provided with the air inlet 501 and the air outlet 502. The cartridge filter assembly 100 is disposed within the housing 500, the periphery of the cartridge filter assembly 100 is in communication with the air inlet 501, and the cavity within the cartridge filter assembly 100 is in communication with the air outlet 502. The brush roll ash removal assembly 200 is disposed below the cartridge filter assembly 100 for rolling dust flocks on the cartridge filter assembly 100.
Correspondingly, the invention also provides a purifying method using the industrial waste gas dust removal flocculation device, which comprises the following steps:
industrial waste gas to be purified enters the shell 500 through the air inlet 501;
filtering off dust flocks in the industrial waste gas through the filter screen of the filter cartridge filtering assembly 100 which rotates continuously, wherein the dust flocks are adhered to the filter screen;
the dust flock is brushed off by the brush roller on the brush roller ash removal assembly 200 contacting the filter screen.
In use, the industrial waste gas dust removal flocculation device is used for removing dust flocculation in industrial waste gas from a waste gas outlet of a setting machine. Firstly, the industrial waste gas enters the housing 500 of the industrial waste gas dust removal flocculation device through the air inlet 501, flows out of the air outlet 502 after passing through the filter cartridge filtering component 100, the brush roller ash cleaning component 200, the extrusion component 300, the steam cleaning component 400 (if provided) and other components in the industrial waste gas dust removal flocculation device, and enters the smoke exhaust pipeline for further purification treatment or discharge.
As shown in fig. 2, the cutting is performed along the line A-A, D-D of the industrial waste dusting batt device to show the location of its internal components in more detail. The details will be described in connection with the corresponding sectional views.
Fig. 3 is a schematic view showing a sectional structure of the industrial waste gas dust-collecting and flocculating device of fig. 2 after A-A line cutting. The cartridge filter assembly 100 is clearly seen with its left side port open to facilitate the flow of cleaned industrial exhaust gas from the central region of the cartridge filter assembly 100. As can be seen from fig. 1 and 2, most of the area of the housing 500 is filled with industrial waste gas to be purified flowing from the air inlet 501, dust, flock, printing aid particles, etc. are filtered by the cartridge filter assembly 100, dust flock adhered to the circumferential surface of the cartridge filter assembly 100 is washed down with steam by the steam washing assembly 400 provided in the middle of the cartridge filter assembly 100, and is dropped into the pressing assembly 300 and extruded after being collected and cleaned by the brush roll ash cleaning assembly 200, thereby collecting the dust flock together; the cleaned industrial waste gas enters the cartridge filter assembly 100 and finally enters the smoke exhaust duct from the left end thereof through the air outlet 502.
Referring to fig. 4, a left side view of an industrial waste air dusting batt device is shown. The left side of cartridge filter assembly 100 is seen to be open to facilitate the flow of cleaned industrial waste gas from outlet 502. Cartridge filter assembly 100 is driven by drive shaft 106 in housing 500 (see fig. 5A).
As can be seen in fig. 5A-5E, the cartridge filter assembly 100 includes cartridge drive plate 101, cartridge follower plate 102, cartridge 103, filter screen 104, cartridge inner support 105, drive shaft 106, and follower ring rail 107.
The diameter of the filter cartridge 103 is 800mm, and the filter cartridge is rolled into a cylinder by, for example, punching plates, and the diameter of the holes in the steel plate can be selected according to practical needs. The filter screen 104 is attached and fixed to the filter cartridge 103. The screen 104 may be selected to have a mesh size of 80 mesh, although other suitable apertures may be selected. Preferably, the filter screen 104 is made of stainless steel.
The right end of the filter cartridge 103 is provided with a cartridge drive plate 101, the cartridge drive plate 101 matching the diameter of the filter cartridge 103 and a drive shaft 106 being provided in a central position. Rotation is driven by an external drive assembly 600 through the drive shaft 106.
Referring to fig. 5B, the left end of the filter cartridge 103 is provided with a slave ring rail 107. The driven ring rail 107 is annular and is provided with a hollow structure in the middle. The hollow structure can allow the purified industrial waste gas to pass through. In one example, the driven annular rail 107 is provided with a central hole 108 at the center thereof, and a plurality of through holes 109 are provided on the driven annular rail 107 around the central hole 108 to allow the purified industrial waste gas to pass therethrough. As shown, the plurality of through holes 109 are distributed in a zig-zag or quincuncial pattern.
The slave ring rail 107 is machined or rounded to match the shape and size of the cartridge 103.
The driven ring rail 107 is fixedly connected to the left end of the filter cartridge 103 for support. In practice, the cartridge 103 is typically up to 1.5 meters in length, and therefore has a large overall weight, requiring good support at the left end. On the other hand, as described above, in order to prevent industrial exhaust gas from being directly sucked away from between the filter cartridge 103 and the driven ring rail 107, a sealing structure 110 is provided between the inner wall of the filter cartridge 103 and the driven ring rail 107, and for example, the sealing structure 110 may be provided as a seal ring or a graphite packing or the like, see fig. 5C.
As can be seen in conjunction with fig. 3, the portion of the filter cartridge 103 above the height of contact with the brush roll cleaning assembly 200 can be considered as an industrial waste gas suction zone, i.e., industrial waste gas is sucked into the filter cartridge 103 from the upper half of the filter cartridge 103, while the lower half of the filter cartridge 103, together with the brush roll cleaning assembly 200 and the extrusion assembly 300, forms a dust treatment zone or dust collection cavity, which is always in a negative pressure zone. For good handling, a sealed connection between the driven ring rail 107 and the filter cartridge 103 is necessary, which would otherwise lead to an inefficient removal of dust flock.
In one embodiment, referring to fig. 5D and 5E, one end of the steam purge assembly 400 is coupled to the cartridge drive plate 101, i.e., movably coupled to the cartridge drive plate 101, such that rotation of the drive shaft 106 rotates the cartridge 103, but the steam purge assembly 400 is stationary. The other end of steam purge assembly 400 is movably connected thereto through central aperture 108 of slave ring rail 107.
The filter cartridge 103 is further provided with annular inner filter cartridge supports 105 distributed along the longitudinal direction of the filter cartridge 103 to support the filter cartridge 103 from inside the filter cartridge 103. As mentioned above, the filter cartridge 103 is generally longer and, because it is made of steel plate, it is heavier and requires better support.
Referring to fig. 6, a structural view after cutting along line B-B of fig. 4 shows a specific structure of the steam cleaning assembly 400.
Since industrial waste gas contains a large amount of oil-containing particulate matter, it is accumulated on the outer wall surface of the cartridge filter assembly 100, resulting in difficulty in effective cleaning.
In the illustrated example, the interior of the cartridge filter assembly 100 is provided with a steam purge assembly 400 to effectively remove soot particulates by injecting steam.
In practice, the soot particulate contaminants on the filter screen 104 or filter cartridge 103 are cleaned by the high temperature and pressure.
The steam cleaning assembly 400 includes a steam nozzle 402 and a plurality of steam holes disposed on the steam nozzle 402. The steam cleaning assembly 400 is stationary within the cartridge filter assembly 100, i.e., it does not rotate with the rotation of the cartridge filter assembly 100. In fact, the steam holes in the steam purge assembly 400 always blow steam toward the underside of the filter cartridge 103.
In one example, the steam cleaning assembly 400 further includes an internal wire connection 403, a steam inlet connection pipe 404, a steam valve 405, a steam nozzle shaft seat 406, a steam nozzle shaft plug 407, and a bearing 408.
The steam nozzle 402 is provided in a downwardly bent shape, and specifically, the steam nozzle 402 includes a flat first tube segment 4021, a downwardly extending second tube segment 4022 connected to the first tube segment 4021, a flat third tube segment 4023 connected to the second tube segment 4022, an upwardly extending fourth tube segment 4024 connected to the third tube segment 4023, and a flat fifth tube segment 4025 connected to the fourth tube segment 4024 and extending outwardly.
Preferably, the second tube segment 4022 and the fourth tube segment 4024 are angled between 60 and 170 degrees relative to the third tube segment 4023. For simplicity and efficiency, the included angle between them is approximately 90 degrees, which may allow the third tube segment 4023 to extend sufficiently downward closer to the cartridge 103 for steam blowing under the same conditions. In fact, due to the fact that the steel tube is at a bend, the second tube segment 4022 and the fourth tube segment 4024 are connected to the third tube segment 4023 by an arc or a slow bend. Alternatively, the extensions of second tube segment 4022 and fourth tube segment 4024 are perpendicular to third tube segment 4023.
The first tube segment 4021 is connected at the left end by a threaded connection to an internal thread connector 403, the internal thread connector 403 being fixedly connected to the cartridge filter assembly 100 (specifically, from the central bore 108 of the moving ring rail 107) and by a threaded connection to an intake connection tube 404, the intake connection tube 404 being in a conduit connection with a steam valve 405, the steam valve 405 controlling the flow of steam into the intake connection tube 404. The right end of the steam nozzle 402 is movably connected to a bearing 408 provided on the cartridge drive plate 101, the bearing 408 being connected to a steam nozzle shaft mount 406 and a steam nozzle plug 407 being provided on the end.
The steam nozzle 402 is provided with a plurality of air injection holes arranged at intervals, and the size and shape of the air injection holes and the interval between two adjacent air injection holes can be selected according to actual needs.
Reinforcing the support of the steam nozzle 402, a steam brace 401 is also provided at a position where the steam nozzle 402 is bent downward. Specifically, a steam strut 401 is disposed between the second tube segment 4022 and the fourth tube segment 4024. The steam struts 401 are disposed at their locations proximate to either the first tube segment 4021 or the fifth tube segment 4025.
The cartridge filter assembly 100 is allowed to rotate by providing an internal wire connection 403 at the left end and a bearing 408 and steam nozzle shaft seat 406 at the right end, etc., while the steam cleaning assembly 400 remains stationary, always blowing steam toward the side where the brush roll ash assembly 200 is located. This cleans the entire cartridge 103 of soot particulates.
Referring to fig. 3 and 7, the brush roll cleaning assembly 200 is disposed below the cartridge filter assembly 100 and in at least a partial position the brush roll cleaning assembly 200 is in contact with the cartridge filter assembly 100 to facilitate the removal of dust flock therefrom.
The brush roll ash removal assembly 200 comprises a brush roll 201, a brush roll connecting shaft 202, a belt seat bearing 203, an adjusting block 204, a cleaning brush 205, a first baffle 206, a second baffle 209, a baffle adjusting plate 207, a bottom plate 208 and the like.
The brush roller 201 is rotatably provided on the base plate 208. Specifically, the brush roller 201 is rotatably provided on a brush roller connecting shaft 202. The brush roller connecting shaft 202 is disposed on the belt seat bearing 203, for example, the brush roller connecting shaft 202 is disposed in the belt seat bearing 203 and is movably connected to both ends thereof so as to be rotatable.
In order to adjust the height of the brush roller 201 to adjust the gap between the worn brush roller 201 and the filter cartridge 103, a seated bearing 203 may be provided on the adjustment block 204 together with the brush roller connecting shaft 202.
On the other side of the bottom plate 208, a roller bearing 203 is provided, and a brush roller connecting shaft 202 is provided on the roller bearing 203, and a brush roller 201 is provided on the brush roller connecting shaft 202. The brushroll connecting shaft 202 may connect the brushroll 201 and allow the brushroll 201 to be driven in rotation.
The seat bearing 203 is connected to the base plate 208 by an adjustment block 204 in a height-adjustable manner, i.e., the gap between the brushroll 201 and the filter cartridge 103 can be adjusted as the brushroll 201 wears.
To clean the dust flock on the brush roller 201, a cleaning brush 205 may be provided on the base plate 208 at a position close to the brush roller 201 to facilitate cleaning of the dust flock.
Correspondingly, a first baffle 206 is also provided on the bottom plate 208 or the adjusting block 204 in the outward direction of the brush roller 201 to allow the dust flock at the lower right end of the filter cartridge 103 to fall into the pressing assembly 300 to the maximum extent.
The first damper 206 is disposed on the adjustment block 204 such that the height of the first damper 206 is adjusted accordingly while the height of the adjustment block 204 is adjusted.
A baffle adjustment plate 207 and a second baffle 209 fixedly coupled to the baffle adjustment plate 207 are provided at one end of the bottom plate 208, and the second baffle 209 is spaced apart from the lower portion of the filter cartridge 103 by a small gap, thereby allowing the filter cartridge 103 to rotate and to maximally block dust flock on the filter cartridge 103 and drop into the pressing assembly 300 (e.g., screw press) provided below. In practice, the filter cartridge 103 rotates counterclockwise, and the brush roller 201 contacts the filter cartridge 103 and rotates clockwise, brushing the dust flock down.
The first baffle 206 and the second baffle 209 are provided in the shape of outwardly turned arcuate plates so as to facilitate collection of dust falling thereon and which match the shape of the bottom of the filter cartridge 103 to help form a closed dust collection cavity.
Referring to fig. 8, the brush roll ash removal assembly 200 generally assumes an upwardly open cavity shape with the curvature of the first baffles 206 on both sides generally matching the filter cartridge 103.
Through the open cavity, the dust flock brushed off the filter cartridge 103 falls into the extrusion assembly 300 and is extruded.
In one example, the extrusion assembly 300 may be a screw extruder.
As can be seen in fig. 8, the middle of the bottom plate 208 is hollow, such that the first baffle 206, the brush roller 201, the bottom plate 208, the second baffle 209 and the baffle adjustment plate 207 form a closed dust collecting cavity with the pressing assembly 300 arranged therebelow. That is, the dust collection chamber as a whole can be considered a large funnel.
Referring to fig. 9, a drive assembly 600 in this example is shown. As described above, the industrial waste gas dust removing device includes the cartridge filter assembly 100 connected to the industrial waste gas outlet, the brush roll ash removing assembly 200 disposed below the cartridge filter assembly, and the extrusion assembly 300 disposed below the brush roll ash removing assembly 200 and in communication therewith, the extrusion assembly 300 being located at a side lower portion of the industrial waste gas dust removing device.
The driving assembly 600 is disposed at a lower portion of the industrial waste air de-dusting batt device and opposite to the pressing assembly 300. As shown, the driving assembly 600 is disposed at the same level as the pressing assembly 300 within the housing 500.
The drive assembly 600 includes a controller 601, a drive sprocket 602, a chain 603, a driven sprocket 604, a tension sprocket 605, a motor mount 606, and a gear motor 607.
The driving force of the driving mechanism such as motor driving can be controlled by the controller 601 and the rotation speed of the driving shaft 106 can be controlled by the reduction motor 607. The gear motor 607 is mounted on the motor mounting seat 606, and the motor shaft of the gear motor 607 is connected with the driving sprocket 602 and the driven sprocket 604 through the chain 603.
The outer side of the chain 603 adjusts the tension of the chain 603 by tensioning the sprocket 605. The drive sprocket 602 is directly or indirectly coupled to the drive shaft 106 to drive rotation thereof.
In one example, a drive sprocket 602 is coupled to and drives rotation of the drive shaft 106 of the cartridge filter assembly 100. The driven sprocket 604 is coupled to the screw of the pressing assembly 300 to rotate it.
Of course, other ways of driving cartridge filter assembly 100 and squeeze assembly 300 will be apparent to those skilled in the art.
In addition, further embodiments of the present invention provide further steps for practicing the decontamination method.
In some embodiments, the purification method further comprises removing contaminants on the filter screen 104 that are difficult to brush off by a steam wash assembly 400 provided in the cartridge filter assembly 100;
the dust batting is extruded by an extrusion assembly 300 disposed below the brush roll ash assembly 200.
In some embodiments, the steam nozzle 402 in the steam purge assembly 400 remains stationary while the cartridge filter assembly 100 rotates, blows steam toward the portion of the filter cartridge 103 where the brush roll ash assembly 200 is disposed,
the brush roll ash removal assembly 200 and the squeeze assembly 300 form a closed dust collection cavity with the lower half of the filter cartridge 103.
In some embodiments, the part of the housing 500 except the dust collecting cavity is filled with industrial waste gas, and the industrial waste gas purified by the cartridge filter assembly 100 flows out through the through hole 109 on the movable ring rail 107.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method of cleaning a brush roll ash removal assembly using an industrial waste gas dusting batting device, the method comprising the steps of:
industrial waste gas to be purified enters the shell through the air inlet;
filtering dust flocks in the industrial waste gas through a filter screen of the filter cartridge filter assembly which rotates continuously, wherein the dust flocks are adhered to the filter screen;
brushing off dust flocks through the contact of a brush roller on the brush roller ash cleaning component and the filter screen;
removing contaminants on the filter screen by a steam cleaning assembly disposed in the cartridge filter assembly;
extruding and forming the dust batting through an extruding assembly arranged below the brush roller ash cleaning assembly;
the steam spray pipe in the steam cleaning assembly keeps static and motionless while the filter cartridge filtering assembly rotates, blows steam towards the filter cartridge part provided with the brush roller ash cleaning assembly,
the brush roll ash removal assembly, the extrusion assembly and the lower half part of the filter cylinder form a closed dust collection cavity;
the part except the dust collecting cavity in the shell is full of industrial waste gas, and the industrial waste gas purified by the filter cartridge filtering component flows out through the through holes on the movable ring rail;
wherein the brush roll ash removal assembly is disposed below the filter cartridge filtration assembly and at least partially in contact with the filter cartridge filtration assembly to facilitate the removal of dust batting from the filter cartridge filtration assembly.
2. The method of purifying according to claim 1, wherein,
the brush roller ash cleaning component comprises a brush roller, a brush roller connecting shaft, a bearing with a seat, an adjusting block, a cleaning brush, a first baffle, a second baffle, a baffle adjusting plate and a bottom plate,
the brush roller is rotatably arranged on a brush roller connecting shaft which is arranged on the bearing with the seat,
the bearing with the seat and the brush roller connecting shaft are arranged on the adjusting block together.
3. A purification method according to claim 2, wherein,
a bearing with a seat is arranged on the other side of the bottom plate, a brush roller connecting shaft is arranged on the bearing with the seat, a brush roller is arranged on the brush roller connecting shaft, and the brush roller connecting shaft is connected with the brush roller and allows the brush roller to be driven to rotate.
4. A purification method according to claim 3, wherein,
the bearing with the seat is connected with the bottom plate in a height-adjustable way through an adjusting block;
a cleaning brush is arranged on the bottom plate at a position close to the brush roller.
5. The method for purifying a water according to claim 4, wherein,
a first baffle is also arranged on the bottom plate or the regulating block in the outward direction of the brush roller so as to enable dust flocks at the lower part of the right end of the filter cylinder to fall into the extrusion assembly to the greatest extent.
6. The method of purifying according to claim 5, wherein,
the first baffle is arranged on the adjusting block, so that the height of the first baffle is correspondingly adjusted while the height of the adjusting block is adjusted.
7. The method of purifying according to claim 6, wherein,
a baffle adjusting plate and a second baffle fixedly connected with the baffle adjusting plate are arranged at one end of the bottom plate, and a gap is reserved between the second baffle and the lower part of the filter cartridge, so that the filter cartridge is allowed to rotate, dust flocks on the filter cartridge are blocked off to the greatest extent and fall into an extrusion assembly arranged below;
the filter cartridge of the cartridge filter assembly rotates counterclockwise and the brush roll contacts the filter cartridge and rotates clockwise, flocculating the dust.
8. The method of purifying according to claim 7, wherein,
the first and second baffles are provided in the shape of outwardly turned arcuate plates and they match the shape of the bottom of the filter cartridge to form a closed dust collection cavity.
9. The method of purifying according to claim 8, wherein,
the brush roller ash cleaning assembly is in an upward open cavity shape as a whole, and the radian of the first baffle plates at two sides is approximately matched with that of the filter cylinder;
through the open cavity, the dust flock brushed off the filter cartridge falls into a press assembly, which is a screw extruder, and is extruded.
10. The method of purifying according to claim 9, wherein,
the middle of the bottom plate is hollow, and the first baffle, the brush roller, the bottom plate, the second baffle and the baffle adjusting plate form a closed dust collecting cavity with the extrusion component arranged below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410216504.0A CN117861344A (en) | 2022-09-09 | 2022-09-09 | Purification method for brush roller ash removal assembly by using industrial waste gas dust removal flocculation device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211103922.6A CN115608074B (en) | 2022-09-09 | 2022-09-09 | Industrial waste gas dust removal wadding device |
| CN202410216504.0A CN117861344A (en) | 2022-09-09 | 2022-09-09 | Purification method for brush roller ash removal assembly by using industrial waste gas dust removal flocculation device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211103922.6A Division CN115608074B (en) | 2022-09-09 | 2022-09-09 | Industrial waste gas dust removal wadding device |
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| Publication Number | Publication Date |
|---|---|
| CN117861344A true CN117861344A (en) | 2024-04-12 |
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Family Applications (6)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410216502.1A Pending CN117861342A (en) | 2022-09-09 | 2022-09-09 | Method for purifying steam cleaning assembly by using industrial waste gas dust removal flocculation device |
| CN202211103922.6A Active CN115608074B (en) | 2022-09-09 | 2022-09-09 | Industrial waste gas dust removal wadding device |
| CN202410216501.7A Pending CN117861341A (en) | 2022-09-09 | 2022-09-09 | Method for cleaning a cartridge filter assembly using an industrial exhaust dust removal batting device |
| CN202410216500.2A Pending CN117919858A (en) | 2022-09-09 | 2022-09-09 | Purification method using industrial waste gas dust removal wadding device |
| CN202410216503.6A Pending CN117861343A (en) | 2022-09-09 | 2022-09-09 | Method for purifying extrusion assembly and driving assembly of industrial waste gas dust removal flocculation device |
| CN202410216504.0A Pending CN117861344A (en) | 2022-09-09 | 2022-09-09 | Purification method for brush roller ash removal assembly by using industrial waste gas dust removal flocculation device |
Family Applications Before (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410216502.1A Pending CN117861342A (en) | 2022-09-09 | 2022-09-09 | Method for purifying steam cleaning assembly by using industrial waste gas dust removal flocculation device |
| CN202211103922.6A Active CN115608074B (en) | 2022-09-09 | 2022-09-09 | Industrial waste gas dust removal wadding device |
| CN202410216501.7A Pending CN117861341A (en) | 2022-09-09 | 2022-09-09 | Method for cleaning a cartridge filter assembly using an industrial exhaust dust removal batting device |
| CN202410216500.2A Pending CN117919858A (en) | 2022-09-09 | 2022-09-09 | Purification method using industrial waste gas dust removal wadding device |
| CN202410216503.6A Pending CN117861343A (en) | 2022-09-09 | 2022-09-09 | Method for purifying extrusion assembly and driving assembly of industrial waste gas dust removal flocculation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206189324U (en) * | 2016-10-20 | 2017-05-24 | 湖北佳士成道路保洁有限公司 | Suction -type road refuse compressing cleaning device |
| CN107321594A (en) * | 2017-08-07 | 2017-11-07 | 金柯楠 | A kind of drum-type Sand screen for building |
| CN208586545U (en) * | 2017-11-01 | 2019-03-08 | 张英俊 | Hand propelled refuse clears up vehicle |
| CN207562465U (en) * | 2017-11-13 | 2018-07-03 | 李昊东 | A kind of sewage filter device in environment-friendly engineering |
| CN108317597B (en) * | 2017-12-20 | 2019-11-05 | 青岛海尔空调器有限总公司 | Clearing apparatus and air conditioner room unit with it |
| CN111659201A (en) * | 2020-06-10 | 2020-09-15 | 界首市利能环保技术开发有限公司 | Based on roll and revolve dynamic formula ventilation filter equipment |
| CN213230362U (en) * | 2020-09-22 | 2021-05-18 | 汉中尧柏磊金节能环保建材有限公司 | Take cleaning device's grit conveyer belt |
| CN215539209U (en) * | 2021-09-07 | 2022-01-18 | 浙江华众建设工程有限公司 | Building dust collection device |
| CN113813715A (en) * | 2021-09-29 | 2021-12-21 | 邢台市天元星食品设备有限公司 | Combined rotary filter cylinder waste gas purification system |
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2022
- 2022-09-09 CN CN202410216502.1A patent/CN117861342A/en active Pending
- 2022-09-09 CN CN202211103922.6A patent/CN115608074B/en active Active
- 2022-09-09 CN CN202410216501.7A patent/CN117861341A/en active Pending
- 2022-09-09 CN CN202410216500.2A patent/CN117919858A/en active Pending
- 2022-09-09 CN CN202410216503.6A patent/CN117861343A/en active Pending
- 2022-09-09 CN CN202410216504.0A patent/CN117861344A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN115608074B (en) | 2024-03-22 |
| CN117919858A (en) | 2024-04-26 |
| CN115608074A (en) | 2023-01-17 |
| CN117861343A (en) | 2024-04-12 |
| CN117861342A (en) | 2024-04-12 |
| CN117861341A (en) | 2024-04-12 |
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