CN114272703A - Foam dust remover - Google Patents
Foam dust remover Download PDFInfo
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- CN114272703A CN114272703A CN202111327056.4A CN202111327056A CN114272703A CN 114272703 A CN114272703 A CN 114272703A CN 202111327056 A CN202111327056 A CN 202111327056A CN 114272703 A CN114272703 A CN 114272703A
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- pressure water
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Abstract
The invention belongs to the technical field of dust removal, and provides a foam dust remover which comprises a foam generating device, a high-pressure water channel, a high-pressure air channel and a nozzle. Wherein the foam generating device is communicated with a foaming agent box for containing foaming agent through a foam conduit; the foam conduit conveys the foaming agent into the foam generating device; the high-pressure water channel is communicated with the foam generating device and is used for conveying high-pressure water into the foam generating device to be mixed with the foaming agent; the high-pressure gas channel is communicated with the foam generating device and used for conveying high-pressure gas into the foam generating device to be mixed with the foaming agent and high-pressure water to generate foam; the nozzle is communicated with the foam generating device and is used for spraying foam for dedusting. Like this, through succinct foam dust remover structure, can obtain the foam of dust removal effect ideal, can not produce ponding and produce the potential safety hazard that causes to the mine.
Description
Technical Field
The invention belongs to the technical field of dust removing equipment, and particularly relates to a foam dust remover.
Background
In the coal mining process, the mining environment or equipment needs to be dedusted. To meet this requirement, in the prior art, a high-pressure water gun is generally used to remove dust. The high-pressure water gun comprises a high-pressure water inlet, a water delivery pipeline and a spray head. Although the dust removal of high pressure squirt can satisfy the dust removal demand to a certain extent, but has a great deal of hidden danger and defect always, specifically embodies:
firstly, the dust removal effect of water mist sprayed by a high-pressure water gun is not ideal;
secondly, a large amount of water can create a safety hazard for the mine.
In conclusion, the existing high-pressure water gun dust removal technology has the technical problems of poor dust removal effect and water accumulation hidden danger.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a foam dust collector, comprising:
the foam generating device is communicated with a foaming agent box for containing foaming agent through a foam conduit; the foam conduit conveys the foaming agent into the foam generating device;
the high-pressure water channel is communicated with the foam generating device and is used for conveying high-pressure water to enter the foam generating device to be mixed with the foaming agent;
the high-pressure gas channel is communicated with the foam generating device and used for conveying high-pressure gas to enter the foam generating device to be mixed with the foaming agent and the high-pressure water to generate foam;
and the nozzle is communicated with the foam generating device and is used for spraying foam for dedusting.
Specifically, the foam generating device, the high-pressure water channel and the high-pressure gas channel are all arranged on the same machine plate; the foam generating device and the high-pressure water channel are arranged in the same linear direction; the inlet of the high-pressure gas channel is positioned at one side of the inlet of the high-pressure water channel, and the inlet of the foam conduit is positioned at one side of the foam generating device.
Specifically, the foam generating device comprises a sealed shell; the sealing shell is provided with a water connecting port connected with the output port of the high-pressure water channel, an air connecting port connected with the output port of the high-pressure air channel and a foam connecting port connected with the output port of the foam conduit; the foam connection port is located between the water connection port and the air connection port, and the air connection port is located at one end close to the nozzle.
Specifically, the foam generating device comprises a sealing shell, wherein the sealing shell is a cylinder, and the cylinder is installed on the machine plate through a seat.
Specifically, the foam generating device comprises a sealing shell and a plurality of layers of filter screen sheets; the multilayer filter screen sheets are arranged in a row side by side and sealed in the sealing shell.
Specifically, the foam generating device comprises a sealing shell, a plurality of layers of filter screen sheets and a plurality of spacing rings; the multilayer filter screen pieces are arranged in a row side by side and sealed in the sealing shell, and the plurality of spacer rings and the multilayer filter screen pieces are arranged at intervals to form a buffer area.
Specifically, the shape of the filter screen sheet is matched with that of the sealing shell, and the filter screen sheet is detachably arranged inside the sealing shell.
Specifically, the filter screen sheet is of a circular hole structure.
Specifically, the filter screen sheet is of a steel mesh structure.
Specifically, the filter screen sheet is of a square hole structure.
In a further improvement, the foam dust collector further comprises: a buffer tank; the buffer tank is positioned between the nozzle and the foam generating device; the buffer tank comprises a sealed space, a foam inlet and a foam outlet which are communicated with the sealed space; the foam inlet and the foam outlet are respectively connected with the outlet of the foam generating device and the inlet of the nozzle.
In a further improvement, the foam generating device comprises a separating device, wherein the separating device comprises a sealed shell, and a mesh conical cavity, a closed conical cavity and a mixing cavity which are hermetically arranged in the sealed shell; the mesh conical cavity is communicated with the high-pressure gas channel through a high-pressure resistant pipe and is independently connected with high-pressure gas;
the cone neck part of the mesh cone cavity is in butt joint with the cone neck part of the closed cone cavity to form a butt joint structure with a thin middle part and two thick ends; one thick end of the butt joint structure is positioned at the input end of the closed conical cavity, and the other thick end of the butt joint structure is positioned at the output end of the mesh conical cavity; the mixing cavity is connected with the input end of the closed conical cavity after high-pressure water and a foaming agent are mixed.
In a further improvement, the nozzles include a first nozzle and a second nozzle; the first nozzle and the second nozzle are respectively connected with two foam output ports on the sealed space.
In a further refinement, the nozzle comprises a trapezoidal shell; the upper bottom of the trapezoidal shell is connected with a foam output port of the sealed space, a transverse nozzle is arranged in the middle of the lower bottom of the trapezoidal shell, and fan-shaped foam is sprayed out of the transverse nozzle.
Compared with the prior art, the invention has the beneficial effects that:
the foam dust remover provided by the invention comprises a foam generating device, a high-pressure water channel, a high-pressure air channel and a nozzle. Wherein the foam generating device is communicated with a foaming agent box for containing foaming agent through a foam conduit; the foam conduit conveys the foaming agent into the foam generating device; the high-pressure water channel is communicated with the foam generating device and is used for conveying high-pressure water into the foam generating device to be mixed with the foaming agent; the high-pressure gas channel is communicated with the foam generating device and used for conveying high-pressure gas into the foam generating device to be mixed with the foaming agent and high-pressure water to generate foam; the nozzle is communicated with the foam generating device and is used for spraying foam for dedusting. Like this, through succinct foam dust remover structure, can obtain the foam of dust removal effect ideal, can not produce ponding and produce the potential safety hazard that causes to the mine.
Drawings
FIG. 1 is a schematic diagram of a foam precipitator;
FIG. 2 is another schematic diagram of the construction of the foam dust collector;
FIG. 3 is another schematic view of the construction of the foam dust collector;
FIG. 4 is another schematic view of the construction of the foam dust collector;
FIG. 5 is another schematic view of the construction of the foam dust collector;
FIG. 6 is a schematic view of a foam generating device;
FIG. 7 is a schematic view of a buffer tank;
FIG. 8 is a schematic view of a separator;
FIG. 9 is another schematic view of the separating apparatus;
FIG. 10 is a schematic view of another embodiment of the foam generating apparatus;
FIG. 11 is a schematic view of a nozzle.
Illustration of the drawings:
1. a foam generating device; 10. sealing the shell; 100. a water connection port; 101. an air connection port; 102. a foam connection port; 11. a seat; 12. a filter screen sheet; 13. a spacer ring; 14. a separation device; 140. sealing the housing; 141. a mesh cone cavity; 142. sealing the conical cavity; 143. a mixing chamber;
2. a foaming agent tank;
3. a foam conduit;
4. a high-pressure water channel;
5. a high pressure gas channel;
6. a nozzle; 60. a first nozzle; 61. a second nozzle; 62. a trapezoidal shell; 620. a transverse spout;
7. a machine plate;
8. a buffer tank; 80. sealing the space; 81. a foam access port; 82. a foam outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described later can be combined with each other as long as they do not conflict with each other.
Example one
Referring to fig. 1, 2, and 3, the present embodiment provides a foam dust collector, including:
a foam generating device 1 communicated with a foaming agent tank 2 for containing a foaming agent through a foam conduit 3; the foam conduit 3 conveys the foaming agent into the foam generating device 1;
the high-pressure water channel 4 is communicated with the foam generating device 1 and is used for conveying high-pressure water into the foam generating device 1 to be mixed with the foaming agent;
the high-pressure air channel 5 is communicated with the foam generating device 1 and used for conveying high-pressure air into the foam generating device 1 to be mixed with a foaming agent and high-pressure water to generate foam;
and the nozzle 6 is communicated with the foam generating device 1 and is used for spraying foam for dedusting.
It should be noted that the high-pressure water, the high-pressure gas and the foaming agent act together in the foam generating device 1, and dust removal can be performed in occasions needing to avoid water accumulation, such as mines and the like. Before this embodiment proposes, prior art all adopts high-pressure squirt to remove dust, though squirt simple structure, the volume is light, but the dust removal effect of high pressure water on the one hand does not have the foam ideal, and on the other hand ponding causes the incident easily.
The foaming agent tank 2 may be provided in the same structure as the foam generating apparatus 1, the high-pressure water passage 4, the high-pressure air passage 5, and the nozzle 6, or may be provided separately and assembled for use.
It should also be noted that the foam conduit 3 can be made of a common material, which saves costs. The communication between the high pressure water passage 4, the high pressure gas passage 5 and the foam generating apparatus 1 requires the use of special materials such as high pressure resistant materials.
In one embodiment, the foam generating device 1, the high-pressure water channel 4 and the high-pressure air channel 5 are all arranged on the same machine plate 7; the foam generating device 1 and the high-pressure water channel 4 are arranged in the same straight line direction; the inlet of the high pressure gas passage 5 is located at one side of the inlet of the high pressure water passage 4, and the inlet of the foam guide 3 is located at one side of the foam generating apparatus 1.
It should be noted that the foam generating device 1, the high-pressure water channel 4 and the high-pressure air channel 5 are all arranged on the same machine plate 7, and a dust remover with a compact structure can be arranged, so that the carrying and the use are convenient.
It should be noted that the foam generating device 1 and the high-pressure water channel 4 are arranged in the same straight direction; the inlet of the high pressure gas passage 5 is located at one side of the inlet of the high pressure water passage 4, and the inlet of the foam guide 3 is located at one side of the foam generating apparatus 1. Like this, can abundant rational planning water route, gas circuit and foam route, relatively independent transports, mutual noninterference before mixing each other to be favorable to stably obtaining the foam.
In a particular embodiment, referring to fig. 1, 2, 3, 4, the foam generating device 1 comprises a sealed housing 10; the sealing shell 10 is provided with a water connecting port 100 connected with the output port of the high-pressure water channel 4, an air connecting port 101 connected with the output port of the high-pressure air channel 5 and a foam connecting port 102 connected with the output port of the foam conduit 3; the foam connection port 102 is located between the water connection port 100 and the air connection port 101, the air connection port 101 being at an end near the nozzle 6.
It should be noted that different interfaces are connected with corresponding substances, and foams required for dust removal can be formed in the sealed shell 10.
In one embodiment, the foam generating device 1 comprises a sealed housing 10, the sealed housing 10 is a cylinder, and the cylinder is mounted on the machine plate 7 through a base 11.
It should be noted that the cylindrical sealing shell 10 may have a multi-layer structure, so as to ensure the sealing effect. But do not exceed three layers, avoid the overweight, be inconvenient to carry the dust removal.
In one particular embodiment, referring to fig. 1, 2, 4, 5, the foam generating device 1 comprises a sealed housing 10 and a plurality of layers of screen sheets 12; the multiple layers of filter screen sheets 12 are arranged side by side in a row and sealed in the sealed shell 10.
It should be noted that the multiple layers of filter screen sheets 12 are blocked layer by layer, so that the high-pressure water and the high-pressure air can push the foaming agent all the way and be fully mixed with the foaming agent, and thus, the foam can be generated stably and efficiently.
In one particular embodiment, referring to fig. 4, 5, foam generating device 1 comprises a sealed housing 10, a plurality of layers of screen sheets 12, and a plurality of spacer rings 13; the multiple layers of filter screen sheets 12 are arranged side by side in a row and sealed in the sealing shell 10, and the multiple spacer rings 13 and the multiple layers of filter screen sheets 12 are arranged at intervals to form a buffer area.
It should be noted that, the multiple layers of filter screen sheets 12 are blocked layer by layer, and the spacer rings 13 together form a buffer zone, so that the high-pressure water and the high-pressure air can push the foaming agent all the way and are fully mixed with the foaming agent, thereby generating more ideal foam dedusting.
In one embodiment, the filter mesh sheet 12 is shaped to fit the shape of the seal housing 10 and is removably mounted within the seal housing 10. Wherein, the filter screen 12 is in a circular hole structure, or the filter screen 12 is in a steel mesh structure, and the filter screen 12 is in a square hole structure.
It should be noted that the shape of the screen sheet 12 is adapted to the shape of the sealing case 10, which facilitates the removal and installation of the screen sheet, and facilitates the formation of foam.
In addition, the selection of different structures of the filter screen sheet 12 can also select a proper filter screen structure according to the requirement of the dust removal environment to form proper foam.
Example two
Referring to fig. 1, 2, 3, 7, the foam duster further comprises: a buffer tank 8; the buffer tank 8 is positioned between the nozzle 6 and the foam generating device 1; the buffer tank 8 comprises a sealed space 80, a foam inlet 81 and a foam outlet 82 which are communicated with the sealed space 80; the foam inlet 81 and the foam outlet 82 are connected to the outlet of the foam generating device 1 and the inlet of the nozzle 6, respectively.
It should be noted that, the buffer tank 8 is located between the nozzle 6 and the foam generating device 1, so that the foam generated by the foam generating device 1 can be fully mixed again in the sealed space 80, and a large amount of foam is buffered to be continuously output to the nozzle 6, thereby improving the dust removal effect.
EXAMPLE III
Referring to fig. 1, 2, 3, 8 and 9, the foam generating device 1 comprises a separating device 14, wherein the separating device 14 comprises a sealed shell 140, a mixing cavity 143, a mesh conical cavity 141 and a closed conical cavity 142 which are hermetically arranged in the sealed shell 140; the mesh conical cavity 141 is communicated with the high-pressure gas channel 5 through a high-pressure resistant pipe and is independently connected with high-pressure gas;
the cone neck part of the mesh cone cavity 141 is butted with the cone neck part of the closed cone cavity 142 to form a butt joint structure with a thin middle part and two thick ends; one thick end of the butt joint structure is positioned at the input end of the closed conical cavity 142, and the other thick end of the butt joint structure is positioned at the output end of the mesh conical cavity 141; the mixing cavity 143 is connected with the input end of the closed conical cavity 142 after the high-pressure water and the foaming agent are mixed.
It should be noted that the separation device 14 can realize gas-water separation, and then is in a high-pressure environment in a butt structure with a thin middle part and two thick ends, so that high-pressure water, high-pressure gas and foaming agent are mixed from the components, and are sprayed to the filter screen structure through the mesh conical cavity 141 to form foam.
It should be noted that, the mesh conical cavity 141 and the closed conical cavity 142 may be both in the shape of a conical structure, and the smaller end portions of the two conical structures are butted to form a middle thin butt joint structure with two thick ends in this embodiment.
It should be noted that the mesh cone cavity 141 may refer to a cavity structure whose inner cavity and outer surface are communicated through a plurality of small holes. The interior of which is in fluid communication.
It should be noted that the closed conical cavity 142 may refer to a cavity structure whose inner cavity is not isolated from the outside. The interior of which is in fluid communication.
It should also be noted that the mixing chamber 143 mixes the high pressure water and the foaming agent to form a large amount of bubbles, and the bubbles are relatively isolated from the docking structure to prevent backflow. Wherein, the water bubbles flow into the butt joint structure, are mixed with the high-pressure gas, and are highly mixed after being relatively isolated, so that the foam suitable for dust removal is generated.
Example four
Referring to fig. 1, 2, 3, 10, the nozzle 6 includes a first nozzle 60 and a second nozzle 61; the first nozzle 60 and the second nozzle 61 are connected to two foam outlets 82 on the sealed space 80, respectively.
It should be further noted that the double-nozzle 6 structure can well exert the advantages of foam dust removal, cover a large area of dust removal area, and improve the dust removal effect.
EXAMPLE five
Referring to fig. 1, 2, 3, 11, the nozzle 6 comprises a trapezoidal shell 62; the upper bottom of the trapezoidal shell 62 is connected with the foam output port 82 of the sealed space 80, the middle part of the lower bottom of the trapezoidal shell 62 is provided with a transverse nozzle 620, and the transverse nozzle 620 sprays fan-shaped foam.
It should be noted that the trapezoidal shell 62 is hollow, and the buffered foam is ejected out of the lateral nozzle 620 in a fan-shaped dust removal shape, so that the foam dust removal effect is fully exerted.
It should be noted that, the transverse nozzle 620 is arranged at the lower bottom of the trapezoidal shell 62, so that large-area foam can be sprayed, and the dust removal effect is improved.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. A foam dust collector, comprising:
the foam generating device is communicated with a foaming agent box for containing foaming agent through a foam conduit; the foam conduit conveys the foaming agent into the foam generating device;
the high-pressure water channel is communicated with the foam generating device and is used for conveying high-pressure water to enter the foam generating device to be mixed with the foaming agent;
the high-pressure gas channel is communicated with the foam generating device and used for conveying high-pressure gas to enter the foam generating device to be mixed with the foaming agent and the high-pressure water to generate foam;
and the nozzle is communicated with the foam generating device and is used for spraying foam for dedusting.
2. The foam dust collector as claimed in claim 1, wherein said foam generating means, said high pressure water passage, and said high pressure gas passage are provided on the same deck; the foam generating device and the high-pressure water channel are arranged in the same linear direction; the inlet of the high-pressure gas channel is positioned at one side of the inlet of the high-pressure water channel, and the inlet of the foam conduit is positioned at one side of the foam generating device.
3. The foam dust collector as claimed in claim 1, wherein said foam generating means comprises a sealed housing; the sealing shell is provided with a water connecting port connected with the output port of the high-pressure water channel, an air connecting port connected with the output port of the high-pressure air channel and a foam connecting port connected with the output port of the foam conduit; the foam connection port is located between the water connection port and the air connection port, and the air connection port is located at one end close to the nozzle.
4. The foam dust collector as claimed in claim 2, wherein said foam generating means includes a sealed housing, said sealed housing being a cylinder, said cylinder being mounted on said deck by means of a mount.
5. The foam dust collector as claimed in claim 1, wherein said foam generating means comprises a sealed housing and a plurality of layers of screen sheets; the multilayer filter screen sheets are arranged in a row side by side and sealed in the sealing shell.
6. The foam dust collector as claimed in claim 1, wherein said foam generating means comprises a sealed shell, a plurality of layers of screen sheets, and a plurality of spacers; the multilayer filter screen pieces are arranged in a row side by side and sealed in the sealing shell, and the plurality of spacer rings and the multilayer filter screen pieces are arranged at intervals to form a buffer area.
7. A foam dust collector as claimed in claim 5 or 6, wherein the shape of the screen sheet is adapted to the shape of the containment vessel and is removably mounted within the containment vessel.
8. The foam dust collector as claimed in claim 7, wherein said screen sheet is of a circular hole structure.
9. The foam duster of claim 7, wherein the screen sheet is a steel mesh structure.
10. The foam dust collector as claimed in claim 7, wherein said screen sheet has a square-hole structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111327056.4A CN114272703B (en) | 2021-11-10 | 2021-11-10 | Foam dust remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111327056.4A CN114272703B (en) | 2021-11-10 | 2021-11-10 | Foam dust remover |
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| Publication Number | Publication Date |
|---|---|
| CN114272703A true CN114272703A (en) | 2022-04-05 |
| CN114272703B CN114272703B (en) | 2022-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111327056.4A Active CN114272703B (en) | 2021-11-10 | 2021-11-10 | Foam dust remover |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1498137A (en) * | 2001-03-22 | 2004-05-19 | �����ҡ�L����ʲ�� | Liquid sprayers |
| DE202004015637U1 (en) * | 2004-10-07 | 2005-01-27 | Ohnemus, Fridolin | Foam generator for tunnel spoil clearance has inlet for liquid and separate inlet with impact plate for compressed air, and has porous cup- shaped foam bubble generator downstream of mixing region |
| CN103670492A (en) * | 2013-12-17 | 2014-03-26 | 中国矿业大学 | Dual-fluid magnetization foam dustfall system and method |
| CN107420124A (en) * | 2017-09-06 | 2017-12-01 | 刘欣宇 | A kind of device for reducing dust administered for mine dust |
| CN107587892A (en) * | 2017-10-23 | 2018-01-16 | 山西潞安环保能源开发股份有限公司常村煤矿 | A kind of fine atomization foam dust-removing device for being used to suppress ore deposit downhole powder dust |
| CN111298555A (en) * | 2020-03-19 | 2020-06-19 | 中煤科工集团重庆研究院有限公司 | Fluid dynamics integral type foam dust device |
-
2021
- 2021-11-10 CN CN202111327056.4A patent/CN114272703B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1498137A (en) * | 2001-03-22 | 2004-05-19 | �����ҡ�L����ʲ�� | Liquid sprayers |
| DE202004015637U1 (en) * | 2004-10-07 | 2005-01-27 | Ohnemus, Fridolin | Foam generator for tunnel spoil clearance has inlet for liquid and separate inlet with impact plate for compressed air, and has porous cup- shaped foam bubble generator downstream of mixing region |
| CN103670492A (en) * | 2013-12-17 | 2014-03-26 | 中国矿业大学 | Dual-fluid magnetization foam dustfall system and method |
| CN107420124A (en) * | 2017-09-06 | 2017-12-01 | 刘欣宇 | A kind of device for reducing dust administered for mine dust |
| CN107587892A (en) * | 2017-10-23 | 2018-01-16 | 山西潞安环保能源开发股份有限公司常村煤矿 | A kind of fine atomization foam dust-removing device for being used to suppress ore deposit downhole powder dust |
| CN111298555A (en) * | 2020-03-19 | 2020-06-19 | 中煤科工集团重庆研究院有限公司 | Fluid dynamics integral type foam dust device |
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| CN114272703B (en) | 2022-09-13 |
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