CN219897631U - Waste gas desulfurizing tower convenient to maintain - Google Patents
Waste gas desulfurizing tower convenient to maintain Download PDFInfo
- Publication number
- CN219897631U CN219897631U CN202320591621.6U CN202320591621U CN219897631U CN 219897631 U CN219897631 U CN 219897631U CN 202320591621 U CN202320591621 U CN 202320591621U CN 219897631 U CN219897631 U CN 219897631U
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- tower body
- pipe
- desulfurization tower
- hole
- circular
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- 230000003009 desulfurizing effect Effects 0.000 title claims abstract description 51
- 239000002912 waste gas Substances 0.000 title description 13
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 55
- 230000023556 desulfurization Effects 0.000 claims abstract description 55
- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 238000003756 stirring Methods 0.000 claims abstract description 26
- 238000005507 spraying Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 64
- 239000007921 spray Substances 0.000 claims description 57
- 239000007789 gas Substances 0.000 claims description 26
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 9
- 239000003546 flue gas Substances 0.000 claims description 9
- 239000003651 drinking water Substances 0.000 claims 2
- 235000020188 drinking water Nutrition 0.000 claims 2
- 239000007788 liquid Substances 0.000 abstract description 39
- 239000003814 drug Substances 0.000 abstract description 25
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000010438 granite Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011152 fibreglass Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses an exhaust gas desulfurization tower convenient to maintain, which relates to an exhaust gas desulfurization tower, and comprises a desulfurization tower body used for connecting components, wherein a stirring component and a spraying component are arranged in the desulfurization tower body; the stirring assembly comprises a first circular through hole formed in one side of the desulfurizing tower body, a first transmission shaft is arranged in the first circular through hole, the first transmission shaft is fixedly connected with an output end of a motor, and a first bevel gear is arranged at the other end of the first transmission shaft; the desulfurization tower body bottom has been seted up the circular through-hole of second, the circular through-hole internalization of second is equipped with the second transmission shaft, be equipped with a plurality of stirring vane on the second transmission shaft, a plurality of stirring vane equidistant array distributes. The utility model relates to an exhaust gas desulfurization tower convenient to maintain, which enables equipment to fully mix liquid medicine, and can clean bottom residues at the same time, thereby being convenient for equipment maintenance.
Description
Technical Field
The utility model relates to an exhaust gas desulfurization tower, in particular to an exhaust gas desulfurization tower convenient to maintain.
Background
The desulfurizing tower is tower equipment for desulfurizing industrial waste gas. The desulfurization tower is built by granite for the most widely application initially, and is manufactured by glass fiber reinforced plastic along with the development of glass fiber reinforced plastic technology by utilizing a water film desulfurization and dust removal principle, namely a granite water film desulfurization dust remover or a granite water film desulfurization dust remover. Compared with a granite desulfurizing tower, the glass fiber reinforced plastic desulfurizing tower has low cost, easy processing, stainless property and light weight, thus becoming a development trend of desulfurizing towers in the future, and being developed into various types of desulfurizing towers such as Venturi type, cyclone plate type, cyclone column type, floating ball type, sieve plate type, pneumatic emulsification type and the like through many years of improvement, the equipment technology is mature, and enterprises can select different types according to own needs.
The traditional waste gas desulfurization tower can not fully mix liquid medicine in the use process, so that a good treatment effect can not be achieved, and residual excessive residues can not be cleaned at the bottom after the waste gas desulfurization tower is used, so that normal use is affected, and a new solution is necessary.
The traditional waste gas desulfurization tower liquid medicine can not be fully mixed, and bottom residues can not be cleaned, so that normal use is affected.
Disclosure of Invention
The utility model mainly aims to provide an exhaust gas desulfurization tower convenient to maintain, which can effectively solve the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a waste gas desulfurizing tower convenient to maintain, includes the desulfurizing tower body that is used for coupling assembling, the inside stirring subassembly that is equipped with of desulfurizing tower body and spraying subassembly, stirring subassembly are used for fully mixing the liquid medicine to clear up the residue simultaneously, and spraying subassembly is used for spraying the liquid medicine;
the stirring assembly comprises a first circular through hole formed in one side of the desulfurizing tower body, a first transmission shaft is arranged in the first circular through hole, the first transmission shaft is fixedly connected with an output end of a motor, a first bevel gear is arranged at the other end of the first transmission shaft, a second circular through hole is formed in the bottom of the desulfurizing tower body, a second transmission shaft is movably arranged in the second circular through hole, a plurality of stirring blades are arranged on the second transmission shaft and distributed in an equidistant array manner, a plurality of hairbrushes are arranged at the bottoms of the stirring blades and distributed in an equidistant array manner, a second bevel gear is arranged at the other end of the second transmission shaft and meshed with the first bevel gear, the motor drives the first transmission shaft to rotate, the first bevel gear drives the second bevel gear to rotate, the second transmission shaft drives the stirring blades to rotate, the purpose of fully mixing liquid medicine is achieved, and meanwhile the hairbrushes are driven to clean residues;
the spray assembly comprises a third circular through hole formed in the desulfurizing tower body, a water suction pipe is arranged in the third circular through hole, a water pump is arranged at the other end of the water suction pipe, a water supply pipe is fixedly connected to the other end of the water pump, a fourth circular through hole is formed in one side of the desulfurizing tower body, a first spray pipe is arranged in the fourth circular through hole, one end of the first spray pipe is fixedly connected with one side of the water supply pipe, the other end of the first spray pipe is fixedly connected with the inner wall of the desulfurizing tower body, a plurality of first spray heads are arranged on the first spray pipe and distributed in an equidistant array, the water pump is matched with the water suction pipe to suck liquid medicine in the desulfurizing tower body into the water supply pipe, and then the liquid medicine is conveyed into the first spray pipe through the water supply pipe to be sprayed out of the first spray heads.
Preferably, a fifth round through hole is formed right above the fourth round hole, a second spray pipe is arranged in the fifth round through hole, one end of the second spray pipe is fixedly connected with one side of a water supply pipe, the other end of the second spray pipe is fixedly connected with the inner wall of the desulfurizing tower body, a plurality of second spray heads are arranged on the second spray pipe, the second spray heads are distributed in an equidistant array, and the water supply pipe simultaneously sends liquid medicine into the second spray pipe and then sprays out of the second spray heads, so that the desulfurizing effect is achieved.
Preferably, be equipped with the defroster in the desulfurizing tower body, the gas vent has been seted up at desulfurizing tower body top, gas vent fixedly connected with blast pipe, the blast pipe is equipped with the filter screen board in the one end of keeping away from the gas vent, the blast pipe other end fixedly connected with chimney, the chimney opposite side is equipped with the fan, and the defroster mainly comprises fixing device such as wave form blade, slab, card strip, and the fog grain that the flue gas was carried in the spraying absorption process, thick liquid drop entrapment get off, and the blast pipe discharges the gas that the desulfurization was accomplished again in the chimney, and the filter screen board material is further to gaseous filtration for the active carbon, and the fan is gaseous from gas vent suction.
Preferably, the water outlet is formed in the other side of the desulfurization tower body, the water outlet is fixedly connected with a water outlet pipe, a liquid inlet is formed right above the water outlet, the liquid inlet is fixedly connected with a liquid inlet pipe, valves are arranged on the water outlet pipe and the liquid inlet pipe, waste water and residues are discharged from the water outlet through the water outlet pipe, and liquid medicine enters the desulfurization tower body from the liquid inlet pipe.
Preferably, an air inlet is formed in the desulfurization tower body, the air inlet is fixedly connected with an air inlet pipe, and exhaust gas is discharged into the desulfurization tower body from the air inlet through the air inlet pipe for desulfurization.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, firstly, the air inlet pipe discharges waste gas into the desulfurizing tower body from the air inlet, meanwhile, the liquid medicine is sent into the desulfurizing tower body from the liquid inlet pipe, the motor is started to drive the first transmission shaft to rotate, so that the first bevel gear rotates, the first bevel gear drives the second bevel gear to rotate, the second transmission shaft drives the stirring blade to rotate, the purpose of fully mixing the liquid medicine is achieved, then the water pump is matched with the water suction pipe to pump the uniformly mixed liquid medicine in the desulfurizing tower body into the water suction pipe, then the water suction pipe is simultaneously used for conveying the liquid medicine into the first spray pipe and the second spray pipe, then the liquid medicine is discharged from the first spray pipes and the second spray pipes, the waste gas achieves the desulfurizing effect, mist particles and slurry droplets carried by the flue gas are captured by the demister, the fan sucks gas from the air outlet, the gas is filtered by the filter screen, the gas after the desulfurization is discharged into the chimney, finally, the waste gas is completely desulfurized, the sewage is discharged from the water outlet pipe, the cleaning water is sent into the desulfurizing tower body, the motor is started to drive the plurality of brushes to clean the adsorption residues at the bottom of the desulfurizing tower body, and the bottom of the desulfurizing tower body is discharged from the water outlet pipe, the desulfurizing tower body is completely, the bottom the desulfurizing tower is cleaned, the device can be cleaned, and the residue can be cleaned completely, and the bottom of the desulfurizing tower can be cleaned, and the device can be cleaned, and the bottom of the device can be maintained sufficiently.
Drawings
FIG. 1 is a schematic view showing the overall structure of an exhaust gas desulfurization tower of the present utility model for easy maintenance;
FIG. 2 is a schematic diagram showing the front view of the maintenance-friendly flue gas desulfurization tower according to the present utility model;
FIG. 3 is a schematic top view of an exhaust gas desulfurization tower of the present utility model for easy maintenance;
FIG. 4 is a schematic cross-sectional view of FIG. 2 in accordance with the present utility model;
fig. 5 is a schematic cross-sectional view of fig. 3 in accordance with the present utility model.
In the figure: 1. a desulfurizing tower body; 2. a first drive shaft; 3. a first bevel gear; 4. a motor; 5. a second drive shaft; 6. a second bevel gear; 7. stirring blades; 8. a brush; 9. a water outlet pipe; 10. a water pumping pipe; 11. a water pump; 12. a water supply pipe; 13. a first spray tube; 14. a first nozzle; 15. a demister; 16. an air inlet pipe; 17. an exhaust pipe; 18. a blower; 19. a chimney; 20. a filter screen plate; 21. a second spray pipe; 22. a second nozzle; 23. a liquid inlet pipe.
Detailed Description
The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 5, the present utility model is an exhaust gas desulfurization tower with convenient maintenance, comprising a desulfurization tower body 1 for connecting components, wherein a stirring component and a spraying component are arranged in the desulfurization tower body 1, the stirring component is used for fully mixing liquid medicine and cleaning residues, and the spraying component is used for spraying the liquid medicine;
the stirring assembly comprises a first circular through hole formed in one side of the desulfurizing tower body 1, a first transmission shaft 2 is arranged in the first circular through hole, the first transmission shaft 2 is fixedly connected with the output end of a motor 4, the other end of the first transmission shaft 2 is provided with a first bevel gear 3, a second circular through hole is formed in the bottom of the desulfurizing tower body 1, a second transmission shaft 5 is movably arranged in the second circular through hole, a plurality of stirring blades 7 are arranged on the second transmission shaft 5, the stirring blades 7 are distributed in an equidistant array manner, a plurality of brushes 8 are arranged at the bottom of the stirring blades 7, a plurality of the brushes 8 are distributed in an equidistant array manner, a second bevel gear 6 is arranged at the other end of the second transmission shaft 5, the second bevel gear 6 is meshed with the first bevel gear 3, the motor 4 drives the first transmission shaft 2 to rotate, the first bevel gear 3 drives the second bevel gear 6 to rotate, the second transmission shaft 5 drives the stirring blades 7 to rotate, the purpose of stirring liquid medicine is achieved, and the brushes 8 are simultaneously driven to clean residues;
the spray assembly comprises a third circular through hole formed in the desulfurization tower body 1, a water suction pipe 10 is arranged in the third circular through hole, a water pump 11 is arranged at the other end of the water suction pipe 10, a water delivery pipe 12 is fixedly connected to the other end of the water pump 11, a fourth circular through hole is formed in one side of the desulfurization tower body 1, a first spray pipe 13 is arranged in the fourth circular through hole, one end of the first spray pipe 13 is fixedly connected with one side of the water delivery pipe 12, the other end of the first spray pipe 13 is fixedly connected with the inner wall of the desulfurization tower body 1, a plurality of first spray heads 14 are arranged on the first spray pipe 13, a plurality of first spray heads 14 are distributed in an equidistant array, the water pump 11 is matched with the water suction pipe 10 to suck liquid medicine in the desulfurization tower body 1 into the water delivery pipe 12, and then the liquid medicine is conveyed into the first spray pipe 13 through the water delivery pipe 12 to be sprayed out from the first spray heads 14.
The desulfurization tower is characterized in that a fifth round through hole is formed right above the fourth round hole, a second spray pipe 21 is arranged in the fifth round through hole, one end of the second spray pipe 21 is fixedly connected with one side of the water supply pipe 12, the other end of the second spray pipe 21 is fixedly connected with the inner wall of the desulfurization tower body 1, a plurality of second spray heads 22 are arranged on the second spray pipe 21, the second spray heads 22 are distributed in an equidistant array, and the water supply pipe 12 simultaneously sends liquid medicine into the second spray pipe 21 and then sprays out from the second spray heads 22, so that the desulfurization effect is achieved.
The desulfurizing tower comprises a desulfurizing tower body 1, wherein a demister 15 is arranged in the desulfurizing tower body 1, an exhaust port is formed in the top of the desulfurizing tower body 1, an exhaust pipe 17 is fixedly connected with the exhaust port, a filter screen plate 20 is arranged in one end, far away from the exhaust port, of the exhaust pipe 17, a chimney 19 is fixedly connected with the other end of the exhaust pipe 17, a fan 18 is arranged on the other side of the chimney 19, the demister 15 mainly comprises fixing devices such as a waveform blade, a sheet and a clamping strip, mist particles and slurry droplets carried by flue gas are captured in the spraying absorption process, the exhaust pipe 17 discharges desulfurized gas into the chimney 19 and then is discharged, the filter screen plate 20 is made of active carbon and further filters the gas, and the fan 18 sucks the gas out of the exhaust port.
The desulfurization tower body 1 is characterized in that a water outlet is formed in the other side of the desulfurization tower body 1, a water outlet pipe 9 is fixedly connected to the water outlet, a liquid inlet is formed right above the water outlet, a liquid inlet pipe 23 is fixedly connected to the liquid inlet, valves are arranged on the water outlet pipe 9 and the liquid inlet pipe 23, waste water and residues are discharged from the water outlet pipe 9, and liquid medicine enters the desulfurization tower body 1 from the liquid inlet pipe 23.
The desulfurization tower body 1 is provided with an air inlet, the air inlet is fixedly connected with an air inlet pipe 16, and the air inlet pipe 16 discharges waste gas into the desulfurization tower body 1 from the air inlet to carry out desulfurization.
The working principle of the utility model is as follows: firstly, the air inlet pipe 16 discharges waste gas into the desulfurizing tower body 1 from the air inlet, meanwhile, the liquid medicine is conveyed into the desulfurizing tower body 1 from the liquid inlet pipe 23, the motor 4 is started to drive the first transmission shaft 2 to rotate, the first bevel gear 3 rotates, the first bevel gear 3 drives the second bevel gear 6 to rotate, the second transmission shaft 5 drives the stirring blade 7 to rotate, the purpose of fully mixing the liquid medicine is achieved, then the water pump 11 is matched with the water suction pipe 10 to suck the liquid medicine which is uniformly mixed in the desulfurizing tower body 1 into the water suction pipe 12, the water suction pipe 12 is simultaneously conveyed into the first spray pipe 13 and the second spray pipe 21, then the spray pipes are sprayed out from the first spray nozzles 14 and the second spray nozzles 22, the desulfurizing effect is achieved on the waste gas, the mist particles and slurry droplets carried by the flue gas are captured by the demister 15, the fan 18 sucks the gas out from the air outlet, the filter screen 20 further filters the gas, the desulfurized gas is discharged into the chimney 19 by the air suction pipe 17, finally, the waste gas is discharged from the water outlet pipe 9, the cleaning water is discharged from the water suction pipe 23 into the desulfurizing tower body 1, the cleaning motor 4 is started, the residue is discharged from the water suction pipe 8, and the bottom of the desulfurizing tower 1 is cleaned.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. An exhaust gas desulfurization tower convenient to maintain, its characterized in that: the desulfurization tower comprises a desulfurization tower body (1) used for connecting the components, wherein a stirring component and a spraying component are arranged in the desulfurization tower body (1);
the stirring assembly comprises a first circular through hole formed in one side of a desulfurizing tower body (1), a first transmission shaft (2) is arranged in the first circular through hole, the first transmission shaft (2) is fixedly connected with the output end of a motor (4), a first bevel gear (3) is arranged at the other end of the first transmission shaft (2), a second circular through hole is formed in the bottom of the desulfurizing tower body (1), a second transmission shaft (5) is movably arranged in the second circular through hole, a plurality of stirring blades (7) are arranged on the second transmission shaft (5), the stirring blades (7) are distributed in an equidistant array, a plurality of hairbrushes (8) are arranged at the bottoms of the stirring blades (7), a plurality of hairbrushes (8) are distributed in an equidistant array, a second bevel gear (6) is arranged at the other end of the second transmission shaft (5), and the second bevel gear (6) is meshed with the first bevel gear (3).
The utility model discloses a desulfurization tower body, including the desulfurization tower body (1), spray the subassembly including seting up the circular through-hole of third on, be equipped with drinking-water pipe (10) in the circular through-hole of third, drinking-water pipe (10) other end water pump (11), water pump (11) other end fixedly connected with water supply pipe (12), the circular through-hole of fourth has been seted up to desulfurization tower body (1) one side, be equipped with first spray tube (13) in the circular through-hole of fourth, first spray tube (13) one end and water supply pipe (12) one side fixed connection, first spray tube (13) other end and desulfurization tower body (1) inner wall fixed connection, be equipped with a plurality of first shower nozzles (14) on first spray tube (13), a plurality of equidistant array distribution of first shower nozzles (14).
2. The maintenance-friendly flue gas desulfurization tower according to claim 1, wherein: a fifth round through hole is formed right above the fourth round through hole, a second spray pipe (21) is arranged in the fifth round through hole, one end of the second spray pipe (21) is fixedly connected with one side of the water supply pipe (12), the other end of the second spray pipe (21) is fixedly connected with the inner wall of the desulfurizing tower body (1), a plurality of second spray heads (22) are arranged on the second spray pipe (21), and a plurality of second spray heads (22) are distributed in an equidistant array.
3. The maintenance-friendly flue gas desulfurization tower according to claim 2, wherein: be equipped with defroster (15) in desulfurizing tower body (1), the gas vent has been seted up at desulfurizing tower body (1) top, gas vent fixedly connected with blast pipe (17), blast pipe (17) are equipped with filter screen plate (20) in the one end of keeping away from the gas vent, blast pipe (17) other end fixedly connected with chimney (19), chimney (19) opposite side is equipped with fan (18).
4. A maintenance-friendly flue gas desulfurization tower according to claim 3, wherein: the desulfurization tower body (1) opposite side has seted up the delivery port, delivery port fixedly connected with outlet pipe (9), the inlet has been seted up directly over the delivery port, inlet fixedly connected with feed liquor pipe (23), all be equipped with the valve on outlet pipe (9) and feed liquor pipe (23).
5. The maintenance-friendly flue gas desulfurization tower according to claim 4, wherein: an air inlet is formed in the desulfurizing tower body (1), and the air inlet is fixedly connected with an air inlet pipe (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320591621.6U CN219897631U (en) | 2023-03-23 | 2023-03-23 | Waste gas desulfurizing tower convenient to maintain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320591621.6U CN219897631U (en) | 2023-03-23 | 2023-03-23 | Waste gas desulfurizing tower convenient to maintain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219897631U true CN219897631U (en) | 2023-10-27 |
Family
ID=88462745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320591621.6U Active CN219897631U (en) | 2023-03-23 | 2023-03-23 | Waste gas desulfurizing tower convenient to maintain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219897631U (en) |
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2023
- 2023-03-23 CN CN202320591621.6U patent/CN219897631U/en active Active
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