CN219640276U - Detachable wind bin of regenerative oxidation furnace - Google Patents
Detachable wind bin of regenerative oxidation furnace Download PDFInfo
- Publication number
- CN219640276U CN219640276U CN202320608773.2U CN202320608773U CN219640276U CN 219640276 U CN219640276 U CN 219640276U CN 202320608773 U CN202320608773 U CN 202320608773U CN 219640276 U CN219640276 U CN 219640276U
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- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 22
- 230000003647 oxidation Effects 0.000 title claims abstract description 21
- 230000001172 regenerating effect Effects 0.000 title claims description 16
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 230000000712 assembly Effects 0.000 claims abstract 3
- 238000000429 assembly Methods 0.000 claims abstract 3
- 238000009825 accumulation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 239000007800 oxidant agent Substances 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 11
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 10
- 238000005457 optimization Methods 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010849 combustible waste Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a detachable wind bin of a heat accumulating type oxidation furnace, which comprises two public wind bins, wherein the two public wind bins are communicated through a valve, the top of each public wind bin is movably connected with an air outlet bin, the bottom of each public wind bin is movably connected with an air inlet bin, both sides of the top and the bottom of each public wind bin are fixedly connected with fixing plates, and the outer sides of the fixing plates are provided with sealing assemblies. According to the utility model, the mounting assembly is arranged, so that the air inlet bin and the air outlet bin are fixedly mounted at the top and the bottom of the public air bin through the mounting assembly after being inserted into the public air bin through the fixing plate, the problem that a large number of tools are required to be carried to disassemble the parts in the process of disassembling the parts in the process of using the parts is solved, the whole part disassembling duration is prolonged, and the advantage of convenience in disassembly is realized.
Description
Technical Field
The utility model relates to the technical field of waste gas treatment, in particular to a detachable wind bin of a regenerative oxidation furnace.
Background
RTO (Regenerative-Thermal-oxidation), a Regenerative oxidation furnace for short, is an organic waste gas treatment device. The principle is that the combustible waste gas is oxidized into corresponding oxide and water at high temperature, so as to purify the waste gas, and the heat released during the decomposition of the waste gas is recovered, the decomposition efficiency of the waste gas reaches more than 99%, and the heat recovery efficiency reaches more than 95%. The heat accumulating type heat exchanger is essentially a combination of a heat accumulating type heat exchanger and a conventional heating furnace, and mainly comprises a heating furnace body, two or more heat accumulating chambers, a reversing system and a fuel, air supply and smoke exhaust system.
For example, application number CN201921209671.3 discloses a detachable wind bin of an RTO regenerative oxidation furnace, which comprises a first common wind bin, a first air inlet wind bin, a first air outlet wind bin and a first purging pipeline, wherein the lower end of the first common wind bin is connected with the first air inlet wind bin, the upper end of the first common wind bin is connected with the first air outlet wind bin, the lower end of the second common wind bin is connected with the second air inlet wind bin, the upper end of the second common wind bin is connected with the second air outlet wind bin, the lower end of the third common wind bin is connected with the third air inlet wind bin, the upper end of the third common wind bin is connected with the third air outlet wind bin, and the first purging pipeline penetrates through the first air inlet wind bin to be connected with the first common wind bin. The detachable wind bin of the RTO heat accumulating type oxidation furnace can be independently detached from the bottom wind bin in the later maintenance process of the RTO heat accumulating type oxidation furnace, so that the time cost is saved, the economic benefit is good, the occupied area is small, the detachable wind bin can be independently detached from the bottom of the RTO heat accumulating type oxidation furnace, and the later maintenance is convenient.
Based on the retrieval of the patent and the discovery of the equipment in the prior art, the equipment can solve the problems that the existing multi-box RTO regenerative oxidation furnace is mainly divided into two forms when in application, one is an external valve, and the RTO regenerative oxidation furnace in the form is convenient for later maintenance, but occupies a large area; one is built-in valve, and this form RTO regenerative oxidation stove area is little, but the difficult problem of later maintenance, but connect through the ring flange in the in-process of using, need carry a large amount of tools to dismantle it in the in-process of dismantling the part to increase whole part and dismantle long-term.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model aims to provide a detachable wind bin of a regenerative oxidation furnace, which has the advantage of convenient disassembly, and solves the problems that a large number of tools are needed to be carried to disassemble parts in the process of disassembling the parts by connecting the parts through a flange plate in the use process, so that the disassembly time of the whole parts is prolonged.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a detachable wind storehouse of heat accumulation formula oxidation furnace, includes two public wind warehouses, be linked together through the valve between two public wind warehouses, the top swing joint in public wind warehouses has the air-out storehouse, the equal swing joint in bottom in public wind warehouses has the air inlet storehouse, the equal fixedly connected with fixed plate in both sides of public wind warehouses top and bottom, seal assembly has been seted up in the outside of fixed plate, the equal fixedly connected with in both sides of public wind warehouses top and bottom is located the connecting plate in the fixed plate outside, the equal swing joint in both sides of public wind warehouses top and bottom has the installation component.
As the preferable mode of the utility model, the sealing component comprises a plurality of mounting holes which are equidistantly distributed, the inner wall of the mounting hole is fixedly connected with a first spring, one side of the fixed plate, which is close to the connecting plate, is provided with a bonding pad, and one end of the first spring, which is far away from the fixed plate, is fixedly connected with one side of the bonding pad, which is close to the fixed plate.
As the preferable one of the utility model, the installation component comprises an installation plate, one side of the installation plate, which is close to the fixed plate, is movably connected with an air outlet bin and an air inlet bin, one side of the installation plate, which is far away from the fixed plate, is fixedly connected with a connecting frame, the inside of the connecting plate is movably connected with a screw, the surface of the screw is in threaded connection with a screw sleeve, one side of the connecting frame, which is far away from the installation plate, is fixedly connected with a locating plate, one side of the installation plate, which is close to the fixed plate, is fixedly connected with a plurality of locating plates which are distributed in equal distance, locating grooves are formed in two sides, which are close to one side of the public air bin, of the air outlet bin and the air inlet bin, are distributed in equal distance, and the locating plate is movably connected with the locating grooves.
As the preferable mode of the utility model, four corners of one side, far away from the fixed plate, of the mounting plate are fixedly connected with limiting rods, one end, far away from the fixed plate, of each limiting rod penetrates through the inside of the connecting plate and is movably connected with the connecting plate, and one end, far away from the fixed plate, of each screw rod is fixedly connected with a hand wheel.
As the preferable mode of the utility model, the first limiting block is movably connected in the connecting plate, and the second limiting block is fixedly connected at one end of the screw far away from the hand wheel.
As the preferable mode of the utility model, one side of the mounting plate far away from the fixed plate is movably embedded with the round table block, one side of the round table block far away from the fixed plate is fixedly connected with the second spring, and one end of the second spring far away from the round table block is fixedly connected with the second limiting block.
As the preferable mode of the utility model, the surface of the second spring is sleeved with the telescopic protective sleeve, one end of the telescopic protective sleeve, which is far away from the mounting plate, is fixedly connected with the second limiting block, and one end of the telescopic protective sleeve, which is far away from the connecting plate, is fixedly connected with the round platform block.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, the mounting assembly is arranged, so that the air inlet bin and the air outlet bin are fixedly mounted at the top and the bottom of the public air bin through the mounting assembly after being inserted into the public air bin through the fixing plate, the problem that a large number of tools are required to be carried to disassemble the parts in the process of disassembling the parts in the process of using the parts is solved, the whole part disassembling duration is prolonged, and the advantage of convenience in disassembly is realized.
2. According to the utility model, the sealing assembly is arranged, so that the air inlet bin and the air outlet bin are spliced to the public air bin through the fixing plate, the first spring of the mounting plate inside mounting hole drives the laminating pad to be laminated with the air inlet bin and the air outlet bin, the air inlet bin and the air outlet bin are laminated with the public air bin, the sealing performance of the air inlet bin and the air outlet bin and the public air bin is improved, the mounting assembly is arranged, the screw rod can drive the screw sleeve to move inwards after rotating inside the connecting plate, the mounting plate is driven to move inwards through the connecting frame in the process of moving the screw sleeve inwards, the mounting plate drives the positioning plate to move inwards, and the mounting plate can drive the positioning plate to be inserted into the positioning groove, so that the fixed mounting of the air outlet bin and the air inlet bin is completed.
3. According to the utility model, the limit rod and the hand wheel are arranged, so that the use of the limit rod can limit the mounting plate, the mounting plate is more stable when moving left and right, the shaking phenomenon in moving can not occur, meanwhile, the hand wheel can be used for facilitating the rotation of the screw rod by a user, thereby increasing the convenience of the user in mounting the air inlet bin and the air outlet bin, and the first limit block and the second limit block are arranged, so that the first limit block can limit the screw rod, the screw rod is prevented from being separated from the connecting plate when rotating, the screw sleeve can be limited by the use of the second limit block, the separation of the screw sleeve and the screw rod is prevented, and the stability of the screw rod and the screw sleeve when in use is ensured.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic view of a front view partially in cross section;
FIG. 3 is an enlarged schematic view of the structure of the present utility model at A;
fig. 4 is a schematic perspective exploded view of the mounting assembly of the present utility model.
In the figure: 1. a public wind bin; 2. an air outlet bin; 3. an air inlet bin; 4. a fixing plate; 5. a seal assembly; 51. a mounting hole; 52. a first spring; 53. a bonding pad; 6. a connecting plate; 7. a mounting assembly; 71. a mounting plate; 73. a connecting frame; 74. a screw; 75. a screw sleeve; 76. a positioning plate; 77. a positioning groove; 8. a limit rod; 9. a hand wheel; 10. a first limiting block; 11. a second limiting block; 12. round table blocks; 13. a second spring; 14. and (5) a telescopic protective sleeve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 4, the detachable wind bin of the regenerative oxidation furnace provided by the utility model comprises two public wind bins 1, wherein the two public wind bins 1 are communicated through a valve, the top of the public wind bin 1 is movably connected with an air outlet bin 2, the bottom of the public wind bin 1 is movably connected with an air inlet bin 3, both sides of the top and the bottom of the public wind bin 1 are fixedly connected with a fixed plate 4, the outer side of the fixed plate 4 is provided with a sealing component 5, both sides of the top and the bottom of the public wind bin 1 are fixedly connected with a connecting plate 6 positioned at the outer side of the fixed plate 4, and both sides of the top and the bottom of the public wind bin 1 are movably connected with a mounting component 7.
Referring to fig. 4, the sealing assembly 5 includes a mounting hole 51, the mounting hole 51 is provided with a plurality of mounting holes and is equidistantly distributed, a first spring 52 is fixedly connected to an inner wall of the mounting hole 51, a bonding pad 53 is disposed on one side of the fixing plate 4 close to the connecting plate 6, and one end of the first spring 52 away from the fixing plate 4 is fixedly connected with one side of the bonding pad 53 close to the fixing plate 4.
As a technical optimization scheme of the utility model, by arranging the sealing component 5, the first spring 52 of the mounting plate 71 inner mounting hole 51 drives the attaching pad 53 to attach to the air inlet bin 3 and the air outlet bin 2 after the air inlet bin 3 and the air outlet bin 2 are inserted onto the public air bin 1 through the fixing plate 4, so that the air inlet bin 3 and the air outlet bin 2 are attached to the public air bin 1, and the tightness of the air inlet bin 3 and the air outlet bin 2 to the public air bin 1 is improved.
Referring to fig. 4, the installation component 7 includes mounting panel 71, one side that mounting panel 71 is close to fixed plate 4 and air-out storehouse 2 and air inlet storehouse 3 swing joint, one side fixedly connected with link 73 that the mounting panel 71 kept away from fixed plate 4, the inside swing joint of connecting plate 6 has screw 74, the surface threaded connection of screw 74 has swivel nut 75, one side that the link 73 kept away from mounting panel 71 and swivel nut 75 fixed connection, one side that the mounting panel 71 is close to fixed plate 4 fixedly connected with locating plate 76, the locating plate 76 is provided with a plurality of and is the equidistance and distributes, the constant head tank 77 has all been seted up to the both sides that air-out storehouse 2 and air inlet storehouse 3 are close to public wind storehouse 1 one side, the constant head tank 77 has been seted up a plurality of and is the equidistance and is distributed, locating plate 76 and constant head tank 77 swing joint.
As a technical optimization scheme of the utility model, through arranging the mounting assembly 7, the screw 74 can drive the threaded sleeve 75 to move inwards after rotating in the connecting plate 6, and the mounting plate 71 is driven to move inwards through the connecting frame 73 in the process of moving the threaded sleeve 75 inwards, so that the mounting plate 71 drives the positioning plate 76 to move inwards, and the mounting plate 71 can drive the positioning plate 76 to be inserted into the positioning groove 77, thereby completing the fixed mounting of the air outlet bin 2 and the air inlet bin 3.
Referring to fig. 4, four corners of one side of the mounting plate 71 away from the fixing plate 4 are fixedly connected with limiting rods 8, one end of the limiting rod 8 away from the fixing plate 4 penetrates through the inside of the connecting plate 6 and is movably connected with the connecting plate 6, and one end of the screw 74 away from the fixing plate 4 is fixedly connected with a hand wheel 9.
As a technical optimization scheme of the utility model, through the arrangement of the limiting rod 8 and the hand wheel 9, the use of the limiting rod 8 can limit the mounting plate 71, so that the mounting plate 71 is more stable when moving left and right, the shaking phenomenon during moving can not occur, and meanwhile, the use of the hand wheel 9 can facilitate a user to rotate the screw 74, thereby increasing the convenience of the user in mounting the air inlet bin 3 and the air outlet bin 2.
Referring to fig. 4, a first limiting block 10 is movably connected inside the connecting plate 6, and a second limiting block 11 is fixedly connected to one end, away from the hand wheel 9, of the screw 74.
As a technical optimization scheme of the utility model, by arranging the first limiting block 10 and the second limiting block 11, the first limiting block 10 can limit the screw 74, so that the screw 74 is prevented from being separated from the connecting plate 6 during rotation, meanwhile, the second limiting block 11 can limit the threaded sleeve 75, so that the threaded sleeve 75 is prevented from being separated from the screw 74, and the stability of the screw 74 and the threaded sleeve 75 during use is ensured.
Referring to fig. 4, a circular truncated cone block 12 is movably inlaid on one side of the mounting plate 71 away from the fixing plate 4, a second spring 13 is fixedly connected to one side of the circular truncated cone block 12 away from the fixing plate 4, and one end of the second spring 13 away from the circular truncated cone block 12 is fixedly connected with a second limiting block 11.
As a technical optimization scheme of the utility model, the second spring 13 drives the screw 74 to move outwards through the elasticity of the second spring 13 by arranging the round platform block 12 and the second spring 13, so that a movable gap between the screw 74 and the connecting plate 6 is reduced, and meanwhile, the second spring 13 can rotate along with the screw 74 when the screw 74 rotates through the use of the round platform block 12, so that the second spring 13 is prevented from interfering with the normal rotation of the screw 74.
Referring to fig. 4, a telescopic protection sleeve 14 is sleeved on the surface of the second spring 13, one end of the telescopic protection sleeve 14, which is far away from the mounting plate 71, is fixedly connected with the second limiting block 11, and one end of the telescopic protection sleeve 14, which is far away from the connecting plate 6, is fixedly connected with the round table block 12.
As a technical optimization scheme of the utility model, the telescopic protective sleeve 14 is arranged, so that the second spring 13 can be protected by using the telescopic protective sleeve 14, and the second spring 13 is prevented from being corroded and damaged during use.
The working principle and the using flow of the utility model are as follows: when the air inlet bin 3 and the air outlet bin 2 are inserted onto the public air bin 1 through the fixing plate 4, the first spring 52 of the mounting plate 71 internal mounting hole 51 drives the attaching pad 53 to attach to the air inlet bin 3 and the air outlet bin 2, the air inlet bin 3 and the air outlet bin 2 are attached to the public air bin 1, the tightness between the air inlet bin 3 and the air outlet bin 2 and the public air bin 1 is improved, then the hand wheel 9 is rotated, the hand wheel 9 drives the screw 74 to rotate, the screw 74 can be limited by the first limiting block 10 while rotating, the screw 74 can drive the screw sleeve 75 to move inwards after rotating, the mounting plate 71 can be driven to move inwards through the connecting frame 73, the positioning plate 76 can be driven to be inserted into the positioning groove 77 on the outer side of the air outlet bin 2 and the air inlet bin 3 after moving inwards, and the fixed mounting of the air outlet bin 2 and the air inlet bin 3 is completed, and the effect of convenient disassembly is achieved.
To sum up: this detachable wind storehouse of heat accumulation formula oxidation furnace, through setting up installation component 7, make air inlet storehouse 3 and air-out storehouse 2 peg graft to public wind storehouse 1 on the back through fixed plate 4 through installation component 7 with air inlet storehouse 3 and air-out storehouse 2 fixed mounting in the top and the bottom of public wind storehouse 1, solved the in-process of using and connect through the ring flange, need carry a large amount of tools to dismantle it at the in-process of dismantling the spare part, thereby increase the long problem of whole part dismantlement.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a removable wind storehouse of heat accumulation formula oxidation oven, includes two public wind storehouse (1), its characterized in that: the utility model discloses a wind turbine is characterized in that two utility wind bins (1) are communicated through a valve, an air outlet bin (2) is movably connected to the top of the utility wind bin (1), an air inlet bin (3) is movably connected to the bottom of the utility wind bin (1), fixing plates (4) are fixedly connected to the two sides of the top and the bottom of the utility wind bin (1), sealing assemblies (5) are arranged on the outer sides of the fixing plates (4), connecting plates (6) are fixedly connected to the two sides of the top and the bottom of the utility wind bin (1) and are positioned on the outer sides of the fixing plates (4), and mounting assemblies (7) are movably connected to the two sides of the top and the bottom of the utility wind bin (1).
2. The detachable wind bin of a regenerative oxidation furnace according to claim 1, wherein: the sealing assembly (5) comprises a mounting hole (51), a plurality of mounting holes (51) are formed in the mounting hole (51) and are equidistantly distributed, a first spring (52) is fixedly connected to the inner wall of the mounting hole (51), a bonding pad (53) is arranged on one side, close to the connecting plate (6), of the fixing plate (4), and one end, away from the fixing plate (4), of the first spring (52) is fixedly connected with one side, close to the fixing plate (4), of the bonding pad (53).
3. The detachable wind bin of a regenerative oxidation furnace according to claim 2, wherein: the utility model provides a mounting assembly (7) including mounting panel (71), one side that mounting panel (71) is close to fixed plate (4) and air outlet bin (2) and air inlet bin (3) swing joint, one side fixedly connected with link (73) that fixed plate (4) were kept away from to mounting panel (71), the inside swing joint of connecting plate (6) has screw rod (74), the surface threaded connection of screw rod (74) has swivel nut (75), one side and swivel nut (75) fixed connection that mounting panel (71) were kept away from to link (73), one side fixedly connected with locating plate (76) that mounting panel (71) is close to fixed plate (4), locating plate (76) are provided with a plurality of and are the equidistance and distribute, constant head tank (77) have all been seted up to one side that air outlet bin (2) and air inlet bin (3) are close to public wind bin (1) one side, a plurality of and are equidistance distribution are seted up to constant head tank (77), locating plate (76) and constant head tank (77) swing joint.
4. A removable wind bin for a regenerative oxidizer according to claim 3, wherein: the four corners that fixed plate (4) one side was kept away from to mounting panel (71) are all fixedly connected with gag lever post (8), the one end that fixed plate (4) was kept away from to gag lever post (8) runs through to the inside of connecting plate (6) and connecting plate (6) swing joint, one end fixedly connected with hand wheel (9) that fixed plate (4) was kept away from to screw rod (74).
5. A removable wind bin for a regenerative oxidizer according to claim 3, wherein: the inside swing joint of connecting plate (6) has first stopper (10), the one end fixedly connected with second stopper (11) that hand wheel (9) were kept away from to screw rod (74).
6. The detachable wind bin of a regenerative oxidation furnace according to claim 5, wherein: one side of mounting panel (71) keeping away from fixed plate (4) activity is inlayed and is had round platform piece (12), one side of round platform piece (12) keeping away from fixed plate (4) fixedly connected with second spring (13), one end and second stopper (11) fixed connection of round platform piece (12) are kept away from to second spring (13).
7. The detachable wind bin of a regenerative oxidation furnace according to claim 6, wherein: the surface cover of second spring (13) is equipped with flexible lag (14), the one end and the second stopper (11) fixed connection of mounting panel (71) are kept away from to flexible lag (14), the one end and round platform piece (12) fixed connection of connecting plate (6) are kept away from to flexible lag (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320608773.2U CN219640276U (en) | 2023-03-25 | 2023-03-25 | Detachable wind bin of regenerative oxidation furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320608773.2U CN219640276U (en) | 2023-03-25 | 2023-03-25 | Detachable wind bin of regenerative oxidation furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219640276U true CN219640276U (en) | 2023-09-05 |
Family
ID=87813519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320608773.2U Active CN219640276U (en) | 2023-03-25 | 2023-03-25 | Detachable wind bin of regenerative oxidation furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219640276U (en) |
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2023
- 2023-03-25 CN CN202320608773.2U patent/CN219640276U/en active Active
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