CN220524139U - Cigarette ash pretreatment device - Google Patents
Cigarette ash pretreatment device Download PDFInfo
- Publication number
- CN220524139U CN220524139U CN202322362811.3U CN202322362811U CN220524139U CN 220524139 U CN220524139 U CN 220524139U CN 202322362811 U CN202322362811 U CN 202322362811U CN 220524139 U CN220524139 U CN 220524139U
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- soot
- ash
- ash blocking
- flue
- pretreatment device
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- 235000019504 cigarettes Nutrition 0.000 title description 10
- 230000000903 blocking effect Effects 0.000 claims abstract description 139
- 239000004071 soot Substances 0.000 claims abstract description 74
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 12
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 206010022000 influenza Diseases 0.000 abstract description 6
- 230000002411 adverse Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 230000001174 ascending effect Effects 0.000 abstract description 3
- 239000000779 smoke Substances 0.000 abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 21
- 239000003546 flue gas Substances 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000004939 coking Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Gasification And Melting Of Waste (AREA)
Abstract
The utility model provides a soot pretreatment device for soot treatment of a flue, which comprises a plurality of soot baffle groups which are distributed in the flue at intervals along the up-down direction, wherein each soot baffle group comprises a plurality of soot baffle plates, each soot baffle plate can rotate along an axis extending along the length direction of the soot baffle plate, and the soot baffle plates are used for jointly blocking soot from leaving the flue. According to the technical scheme provided by the utility model, the ash blocking plates are arranged to block the ash from the smoke blocking plate in the ascending process, and the ash blocking plates can rotate along the axes extending along the length direction of the ash blocking plates, so that the ash blocking plates can adjust the angle, the contact efficiency of the ash and the ash blocking plates is improved, and the adverse effect of the ash on heating surfaces in other flues is reduced.
Description
Technical Field
The utility model relates to the technical field of soot pretreatment, in particular to a soot pretreatment device.
Background
In the industrial production process, a boiler is required to burn fuel to heat raw materials, and a large amount of soot is often generated in the heating process, so that the soot needs to be pretreated to reduce the adverse effect of the soot on heating surfaces in other flues. At present, the flue is treated by adopting a high-pressure water spraying mode, but a large amount of water is sprayed into the flue, so that the temperature of the flue gas can be reduced, the moisture content of the flue gas is increased, and meanwhile, the heating surface of the flue cannot continuously run due to frequent flushing of the high-pressure water, so that the flue has very limited effect of treating the flue.
Disclosure of Invention
The utility model mainly aims to provide a soot pretreatment device, which aims to solve the problem of poor soot pretreatment effect at present.
In order to achieve the above object, the present utility model provides a soot pretreatment device for soot treatment of a flue, the soot pretreatment device comprising a plurality of soot blocking groups which are distributed in the flue at intervals along the up-down direction, each soot blocking group comprising a plurality of soot blocking plates, each soot blocking plate being rotatable along an axis extending in the length direction thereof, the plurality of soot blocking plates being adapted to jointly block soot from leaving the flue.
Optionally, a plurality of ash baffles are distributed at intervals along the circumferential direction; or,
each ash blocking group comprises two ash blocking structures which are positioned on the same horizontal plane and are oppositely arranged along the left-right direction, and each ash blocking structure comprises a plurality of ash blocking plates which are spaced along the front-back direction.
Optionally, a plurality of through holes are formed in the wall surface of the flue;
the soot pretreatment device further comprises a plurality of rotating devices, each of which comprises:
the base is used for being arranged on the outer wall surface of the flue;
the motor is movably arranged on the base; the method comprises the steps of,
the rotating rod is fixedly arranged on an output shaft of the motor, and can extend into the flue from the corresponding through hole and be connected with the corresponding ash blocking plate so as to drive the ash blocking plate to rotate.
Optionally, the soot pretreatment device further comprises a plurality of driving devices, each of the driving devices comprising:
the connecting part is detachably arranged on one side, far away from the flue, of the motor; the method comprises the steps of,
the driving part is in driving connection with the connecting part and is fixedly arranged on the base, and the driving part can drive the connecting part to move left and right so as to drive the corresponding ash blocking plate to extend into or extend out of the flue from the corresponding through hole.
Optionally, the soot pretreatment device further comprises a plurality of soot removal devices, each of which comprises:
the cylinder is arranged on one side of the base, which is close to the ash baffle plate; the method comprises the steps of,
the ash removing plate is connected with the cylinder rod of the cylinder and is positioned above the corresponding ash blocking plate, so that the ash blocking plate can move on the surface of the ash blocking plate under the driving of the cylinder when the ash blocking plate rotates to a horizontal plane.
Optionally, the soot pretreatment device further comprises a plurality of metal covers, and each metal cover is arranged above the corresponding rotating device and used for blocking soot from being discharged to the outside of the flue through the through hole.
Optionally, each ash blocking plate is formed by splicing a plurality of ash blocking sections distributed along the length direction of the ash blocking plate.
Optionally, each ash blocking plate is one of a plane plate, a filter screen and a wave plate.
Optionally, the ash blocking plates in the same ash blocking group have the same structure.
Optionally, the two ash baffles are different in structure along the upper and lower directions.
According to the technical scheme provided by the utility model, the ash blocking plates are arranged to block the ash in the ascending process, and the ash blocking groups are distributed at intervals up and down, so that the contact frequency of the ash and the ash blocking groups is increased, the ash blocking plates can rotate along the axes extending along the length direction of the ash blocking plates, the angle of the ash blocking plates can be adjusted, the contact efficiency of the ash and the ash blocking plates is further improved, the adverse effect of the ash on heating surfaces in other flues is reduced, and the promotion of the ash pretreatment effect is realized.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of a soot pretreatment device according to the present utility model;
FIG. 2 is a schematic view of the ash handling apparatus of FIG. 1;
FIG. 3 is a top view of the ash blocking set of the wave plate in the ash blocking plate structure of FIG. 1;
FIG. 4 is a top view of the ash blocking set of FIG. 1 with the ash blocking plate structure as a filter screen;
fig. 5 is a top view of the ash blocking set with the ash blocking plate structure of fig. 1 being a plane plate.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 1000 | Ash pretreatment device | 33 | Rotating rod |
| 100 | Ash blocking group | 4 | Driving device |
| 101 | Ash blocking structure | 41 | Connecting part |
| 1 | Ash baffle | 42 | Drive unit |
| 2 | Via hole | 5 | Ash removing device |
| 3 | Rotating device | 51 | Cylinder |
| 31 | Base seat | 52 | Ash removal plate |
| 32 | Motor with a motor housing | 6 | Metal cover |
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. 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.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
In the industrial production process, a boiler is required to burn fuel to heat raw materials, and a large amount of soot is often generated in the heating process, so that the soot needs to be pretreated to reduce the adverse effect of the soot on heating surfaces in other flues. At present, the flue is treated by adopting a high-pressure water spraying mode, but a large amount of water is sprayed into the flue, so that the temperature of the flue gas can be reduced, the moisture content of the flue gas is increased, and meanwhile, the heating surface of the flue cannot continuously run due to frequent flushing of the high-pressure water, so that the flue has very limited effect of treating the flue.
The utility model mainly aims to provide a soot pretreatment device, which aims to solve the problem of poor soot pretreatment effect at present. Fig. 1 to 3 are schematic structural diagrams of an embodiment of the present utility model.
Referring to fig. 1 to 3, the soot pretreatment device 1000 includes a plurality of soot blocking groups 100 spaced apart from each other in the vertical direction in the flue, each of the soot blocking groups 100 includes a plurality of soot blocking plates 1, each of the soot blocking plates 1 is rotatable along an axis extending in the longitudinal direction thereof, and the plurality of soot blocking plates 1 are used for jointly blocking soot from leaving the flue.
In the technical scheme provided by the utility model, the ash blocking plates 1 are arranged to block the ash from the smoke blocking plate in the ascending process, and the ash blocking groups 100 are distributed vertically at intervals, so that the contact frequency of the ash and the ash blocking groups 100 is increased, the ash blocking plates 1 can rotate along the axes extending along the length direction of the ash blocking plates, the ash blocking plates 1 can pass through the adjustment angle, the contact efficiency of the ash and the ash blocking plates 1 is further improved, the adverse effect of the ash on heating surfaces in other flues is reduced, and the promotion of the ash pretreatment effect is realized.
It should be noted that the present utility model is not limited to the arrangement of the plurality of ash baffles 1 on the same horizontal plane, and in one embodiment, the plurality of ash baffles 1 are distributed at intervals along the circumferential direction, and it should be understood that the number of ash baffles 1 may be 2, 3, 4 or even more, and preferably distributed uniformly along the circumferential direction.
In another embodiment, each ash blocking group 100 includes two ash blocking structures 101 disposed at the same horizontal plane and opposite to each other in the left-right direction, and each ash blocking structure 101 includes a plurality of ash blocking plates 1 spaced apart from each other in the front-rear direction. At this time, a plurality of the ash blocking plates 1 are distributed on two opposite sides of the flue. So designed, no matter it is circular flue or square flue, a plurality of on the same horizontal plane ash blocking plate 1 can cover the plane of whole flue basically to guarantee that cigarette ash can be more with a plurality of ash blocking plate 1 contact, improved cigarette ash pretreatment's effect. Compared with the large ash baffle plate 1, the scheme adopts the ash baffle plates 1 with a plurality of smaller areas, so that the flue is ensured to have enough space for gas to pass through, and most of ash can be blocked. Because each ash blocking plate 1 can rotate along the axis extending along the length direction, each ash blocking group 100 is provided with a plurality of ash blocking plates 1 to play a role in guiding flow, and the direction of all the ash blocking plates 1 in each ash blocking group 100 is continuously changed, so that the ash in the flue gas is easier to adhere to the ash blocking plates 1, and the contact efficiency of the ash and the ash blocking plates 1 is improved.
In an embodiment, referring to fig. 1, a wall surface of the flue is provided with a plurality of through holes 2; the soot pretreatment device 1000 further comprises a plurality of rotating devices 3, each rotating device 3 comprises a base 31, a motor 32 and a rotating rod 33, the base 31 is used for being installed on the outer wall surface of the flue, the motor 32 is movably arranged on the base 31, the rotating rod 33 is fixedly installed on an output shaft of the motor 32, and the rotating rod 33 can extend into the flue from the corresponding through hole 2 and is connected with the corresponding soot baffle 1 so as to drive the soot baffle 1 to rotate. So designed, the motor 32 in the rotating device 3 can be arranged outside the flue, so that the flue gas in the flue is prevented from damaging the motor 32. Through setting up rotary device 3 for ash preprocessing device 1000 can realize the automation rotation of ash blocking plate 1, and the user can set up the procedure in advance, and control motor 32 rotates under certain frequency, simultaneously, when the deposition is too much on the ash blocking plate 1, steerable motor 32 rotates fast for the deposition is got rid of, thereby alleviates the pressure of ash blocking plate 1 improves the life-span of ash blocking plate 1.
Further, referring to fig. 1, the soot pretreatment device 1000 further includes a plurality of driving devices 4, each driving device 4 includes a connecting portion 41 and a driving portion 42, the connecting portion 41 is detachably mounted to a side of the motor 32 away from the flue, the driving portion 42 is in driving connection with the connecting portion 41 and is fixedly mounted on the base 31, and the driving portion 42 can drive the connecting portion 41 to move along a left-right direction so as to drive the corresponding soot baffle plate 1 to extend into or extend out of the flue from the corresponding via hole 2. So designed, when the flue needs to be exhausted rapidly, the ash blocking plate 1 can be driven to move out of the flue by the driving device 4 when the flue is blocked from exhausting. By providing the driving means 4, the ash pretreatment device 1000 can realize automatic movement of the ash blocking plate 1, a user can set a program in advance, and the driving part 42 is controlled to drive the connecting part 41 to move at a certain frequency. It should be noted that the connection portion 41 may be disconnected from the motor 32, so that the rotating device 3 is integrated with the ash blocking plate 1, thereby facilitating the installation and the disassembly of the ash blocking plate 1 and also facilitating the sealing of the flue wall. Of course, the specific connection mode of the driving device 4 is not limited in this solution, for example, the connection portion 41 and the driving portion 42 may be directly installed between the rotation rod 33 and the ash blocking plate 1, so as to rotate together with the ash blocking plate 1, and the actual situation may change the strategy according to the user's requirement.
Specifically, the driving device 4 may be an air cylinder and a sliding block connected to the air cylinder rod, where the air cylinder drives the sliding block to push the motor 32, so as to drive the ash blocking plate 1 to move in the left-right direction.
Further, referring to fig. 1 and 2, in order to remove the coking on the ash blocking plate 1 and reduce the burden of the ash blocking plate 1, the soot pretreatment device 1000 further includes a plurality of ash removal devices 5, each ash removal device 5 includes an air cylinder 51 and an ash removal plate 52, the air cylinder 51 is mounted on one side of the base 31 close to the ash blocking plate 1, and the ash removal plate 52 is connected with the air cylinder rod of the air cylinder 51 and is located above the corresponding ash blocking plate 1, so that the ash blocking plate 1 can be driven by the air cylinder 51 to move on the surface of the ash blocking plate 1 when the ash blocking plate 1 rotates to a horizontal plane. Through setting up ash handling equipment 5 for ash preprocessing device 1000 can realize the automation clearance of ash blocking plate 1, and the user can set up the procedure in advance, and control ash blocking plate 1 is in under the certain frequency ash blocking plate 1 is gone up and is removed, can be provided with detection device on the ash blocking plate 1, works as when coking on the ash blocking plate 1 is too much, detection device can transmit signal to rotating device 3 and ash handling equipment 5, treat when ash blocking plate 1 rotates to horizontal position, ash removing plate 52 is in remove on the ash blocking plate 1, in order to promote the coking and break away from ash blocking plate 1, after the clearance is accomplished, rotating device 3 control ash blocking plate 1 upset, supplies ash handling equipment 5 is right ash blocking plate 1 another side carries out the ash removal, and then has improved ash blocking plate 1's life. Of course, the specific installation mode of the ash removing device 5 is not limited in this scheme, for example, two ash removing plates 52 may be directly disposed on two surfaces of the ash blocking plate 1, and the cylinder rod is provided with a switching frame and is mounted on the rotating rod 33 so as to rotate together with the ash blocking plate 1, so that ash can be removed by the ash blocking plate 1 under the condition of rotation, and the actual situation can change the strategy according to the user requirement.
Further, referring to fig. 1, in order to prevent the flue gas from leaking to the outside through the through holes 2 on the flue, the soot pretreatment device 1000 further includes a plurality of metal covers 6, and each metal cover 6 is covered over the corresponding rotating device 3, so as to block the soot from being discharged to the outside of the flue through the through holes 2. Of course, the specific position covered by the metal cover 6 is not limited, and when the driving device 4 is fixedly connected with the rotating device 3, the metal cover 6 must be covered together with the rotating device 3 and the driving device 4, and of course, the metal cover 6 can also be movably arranged on the rotating shaft along the left-right direction, and the opening of the metal cover 6 faces the ash blocking plate 1 and can move to be attached to the outer wall surface of the flue, so that the sealing of the via hole 2 is realized. The present solution is also not limited to the specific shape of the metal cover 6, for example, when it is provided in a hemispherical shape, it uses less material for producing the metal cover 6 with the same cover volume.
Further, each ash blocking plate 1 is formed by splicing a plurality of ash blocking sections distributed along the length direction of the ash blocking plate. By the design, the ash blocking plates 1 with different lengths can be spliced according to flues with different specifications, so that the compatibility of the ash blocking plates 1 is improved. And when the ash blocking plate 1 is damaged, only a plurality of ash blocking sections of the damaged part are required to be replaced, so that the cost is reduced, and the utilization rate of the ash blocking plate 1 is improved.
In an embodiment, referring to fig. 3 to 5, in order to improve the working efficiency of the soot pretreatment device 1000, each of the soot baffles 1 is configured as one of a planar plate, a filter screen, and a wave plate. Wherein the plane board can block more cigarette ash, but the gas permeability is relatively poor, slows down the discharge efficiency of flue gas easily, and the filter screen gas permeability is better, but the cigarette ash that blocks is less, and the wave board can be attached with more cigarette ash when the flue gas that the speed is slower is facing a plurality of folds owing to its surface, through rationally setting up the ash blocking board 1 of multiple different structures for this device can block more cigarette ash, can also guarantee the outflow speed of flue gas simultaneously, thereby has improved work efficiency.
Specifically, the ash blocking plates 1 in the same ash blocking group 100 have the same structure. By the design, the flue gas flowing speed of the flue gas on the same horizontal plane is the same in the flue gas flowing process, so that the flue gas flows more uniformly in the flue.
Further, the two ash baffles 1 adjacent to each other in the up-down direction are different in structure. Taking the ash blocking plate 1 as an example, one of a plane plate, a filter screen and a wave plate can be set, and three ash blocking plates 1 which are adjacent from top to bottom are sequentially set as the plane plate, the filter screen and the wave plate from bottom to top. When the flue gas just dashes out from the flue lower part, the speed of flue gas is faster, and a large amount of cigarette ash is blocked by the plane board, and when going up again, need pass through the filter screen and carry out the transition, avoid the flue gas speed too little, when the flue gas is close to the flue opening, the speed of flue gas is lower, is easy to attach on the great wave board of surface area to the residual cigarette ash has been blocked again and has left the flue. By arranging the ash baffle plates 1 with various different structures, the device can block more ash, and the ash baffle plates 1 with repeated structures can cause the defect of the ash baffle plates 1 to be amplified, so that the pretreatment efficiency of the smoke is reduced. Of course, the proposal is not limited to the staggered distribution of the three structures, and the specific strategy can be adjusted according to the speed of the flue gas and the content of the ash in the flue gas.
The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. The ash pretreatment device is used for treating the ash in the flue and is characterized by comprising a plurality of ash blocking groups which are distributed in the flue at intervals along the up-down direction, each ash blocking group comprises a plurality of ash blocking plates, each ash blocking plate can rotate along an axis extending along the length direction of the ash blocking plate, and the ash blocking plates are used for jointly blocking the ash from leaving the flue.
2. The soot pretreatment device of claim 1, wherein a plurality of said soot baffles are circumferentially spaced apart; or,
each ash blocking group comprises two ash blocking structures which are positioned on the same horizontal plane and are oppositely arranged along the left-right direction, and each ash blocking structure comprises a plurality of ash blocking plates which are spaced along the front-back direction.
3. The soot pretreatment device according to claim 1 or 2, wherein a plurality of through holes are provided on a wall surface of the flue;
the soot pretreatment device further comprises a plurality of rotating devices, each of which comprises:
the base is used for being arranged on the outer wall surface of the flue;
the motor is movably arranged on the base; the method comprises the steps of,
the rotating rod is fixedly arranged on an output shaft of the motor, and can extend into the flue from the corresponding through hole and be connected with the corresponding ash blocking plate so as to drive the ash blocking plate to rotate.
4. The soot pretreatment device of claim 3, further comprising a plurality of driving devices, each of said driving devices comprising:
the connecting part is detachably arranged on one side, far away from the flue, of the motor; the method comprises the steps of,
the driving part is in driving connection with the connecting part and is fixedly arranged on the base, and the driving part can drive the connecting part to move left and right so as to drive the corresponding ash blocking plate to extend into or extend out of the flue from the corresponding through hole.
5. The soot pretreatment device of claim 3, further comprising a plurality of soot removal devices, each of the soot removal devices comprising:
the cylinder is arranged on one side of the base, which is close to the ash baffle plate; the method comprises the steps of,
the ash removing plate is connected with the cylinder rod of the cylinder and is positioned above the corresponding ash blocking plate, so that the ash blocking plate can move on the surface of the ash blocking plate under the driving of the cylinder when the ash blocking plate rotates to a horizontal plane.
6. The soot pretreatment device of claim 3, further comprising a plurality of metal caps, each of said metal caps being disposed over a corresponding one of said rotating means for blocking soot from being discharged outside of said flue through said through hole.
7. The soot pretreatment device of claim 1, wherein each of said soot baffles is formed by splicing a plurality of soot baffles distributed along the length thereof.
8. The soot pretreatment device of claim 1, wherein each of the soot baffles is one of a planar plate, a filter screen, and a wave plate.
9. The soot pretreatment device of claim 8, wherein a plurality of the soot baffles in the same soot blocking group have the same structure.
10. The soot pretreatment device of claim 8, wherein two of said soot baffles are different in structure in the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322362811.3U CN220524139U (en) | 2023-08-30 | 2023-08-30 | Cigarette ash pretreatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322362811.3U CN220524139U (en) | 2023-08-30 | 2023-08-30 | Cigarette ash pretreatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220524139U true CN220524139U (en) | 2024-02-23 |
Family
ID=89928389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322362811.3U Active CN220524139U (en) | 2023-08-30 | 2023-08-30 | Cigarette ash pretreatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220524139U (en) |
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2023
- 2023-08-30 CN CN202322362811.3U patent/CN220524139U/en active Active
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