CN219631023U - Quick-dismantling hydrogen peroxide decomposing device - Google Patents
Quick-dismantling hydrogen peroxide decomposing device Download PDFInfo
- Publication number
- CN219631023U CN219631023U CN202320280871.8U CN202320280871U CN219631023U CN 219631023 U CN219631023 U CN 219631023U CN 202320280871 U CN202320280871 U CN 202320280871U CN 219631023 U CN219631023 U CN 219631023U
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- quick
- hydrogen peroxide
- shell
- filter screen
- manganese dioxide
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 141
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 90
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 30
- 230000017525 heat dissipation Effects 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 18
- 238000009825 accumulation Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 10
- 229910001252 Pd alloy Inorganic materials 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 238000004659 sterilization and disinfection Methods 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Catalysts (AREA)
Abstract
The utility model discloses a quick-dismantling hydrogen peroxide decomposing device, which comprises: the thick film heating pipe is arranged in the shell, the layered manganese dioxide plates with honeycomb holes are arranged in the middle of the thick film heating pipe, a heat dissipation ring is arranged between every two adjacent layered manganese dioxide plates, two air filter screens are respectively arranged in inner cavities at two ends of the shell and respectively lean against the layered manganese dioxide plates at two ends of the thick film heating pipe, two quick-release connectors are respectively connected at two ends of the shell, and the quick-release connectors comprise: the air filter comprises a neck flange and a locking ring, wherein a first external thread on the neck flange is in threaded connection with a first internal thread on the locking ring, and the locking ring is clamped into the shell and is abutted against the air filter. The utility model can not only improve the decomposition efficiency of hydrogen peroxide, but also discharge the decomposed water vapor into water vapor without water accumulation, and can realize quick assembly and disassembly through the quick-disassembly joint, thereby being convenient for replacing a filter screen and overhauling.
Description
Technical Field
The utility model relates to the technical field of sterilization equipment, in particular to a quick-dismantling hydrogen peroxide decomposition device.
Background
When the hydrogen peroxide disinfectant is used for disinfection, hydrogen peroxide is required to be vaporized into aerosol particles and sprayed into a space, so that the air and the surfaces of objects in the space are disinfected, and the hydrogen peroxide is automatically decomposed into oxygen and water by utilizing the instability of the hydrogen peroxide, so that the pollution to the air is prevented, but the self-decomposition time of the hydrogen peroxide vapor is longer, and the decomposition efficiency is greatly reduced.
In order to improve the decomposition efficiency of hydrogen peroxide vapor, a hydrogen peroxide decomposition device is disclosed in the market at present, and the publication number is: CN216274401U, a palladium alloy anode plate and a palladium alloy cathode plate are arranged in the shell at intervals, then the palladium alloy anode plate and the palladium alloy cathode plate are connected with a power supply, after the palladium alloy anode plate and the palladium alloy cathode plate are electrified, hydrogen peroxide vapor is decomposed, but the palladium alloy is more expensive, and the decomposed water is accumulated in the shell, so that a water collecting tank is required to be additionally arranged. In order to reduce the cost, an in-situ hydrogen peroxide degradation device is also disclosed in the market, and the publication number is: CN210584477U, a first efficient filter is disposed in the first box, a manganese dioxide catalytic filter and a second efficient filter are disposed in the second box, the hydrogen peroxide vapor is filtered through the first efficient filter, then enters the manganese dioxide catalytic filter to be decomposed into oxygen and water after contacting with manganese dioxide, the oxygen is filtered through the second efficient filter and is discharged outwards, the price of manganese dioxide is cheaper than that of palladium alloy, so that the cost can be reduced by decomposing the hydrogen peroxide vapor by manganese dioxide, but the water produced by degradation in the degradation device is accumulated in the degradation device, or a water collecting tank is required to be additionally disposed for drainage, and when the degradation device is used for decomposing the hydrogen peroxide vapor, the condensed hydrogen peroxide liquid cannot be fully contacted with the manganese dioxide catalytic filter due to vapor condensation, and incomplete decomposition is easy to occur.
Disclosure of Invention
The utility model aims to provide a quick-dismantling type hydrogen peroxide decomposition device which can improve the decomposition efficiency of hydrogen peroxide vapor, can discharge decomposed water and oxygen together and can facilitate the disassembly, assembly and replacement of a filter screen.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: quick detach formula hydrogen peroxide decomposition device includes: the thick film heating pipe is arranged in the shell, a plurality of layered manganese dioxide plates are arranged in the middle of the thick film heating pipe, honeycomb holes are formed in the layered manganese dioxide plates, heat dissipation rings are arranged between every two adjacent layered manganese dioxide plates, an air filter screen is respectively arranged in inner cavities at two ends of the shell, the two air filter screens respectively lean against the layered manganese dioxide plates at two ends of the thick film heating pipe, two quick-release connectors are respectively connected at two ends of the shell, and the quick-release connectors comprise: the air filter comprises a neck flange and a locking ring, wherein a first external thread is arranged on the outer side wall of the neck flange, a first internal thread is arranged on the inner hole wall of the locking ring, the first external thread on the neck flange is in threaded connection with the first internal thread on the locking ring, and the locking ring is clamped into the shell and is abutted against the air filter.
Further, in the quick-dismantling hydrogen peroxide decomposition device, the outer side wall of the locking ring is provided with second external threads, the second external threads and the first external threads are in the same rotation direction, the inner walls at two ends of the shell are provided with second internal threads, the second internal threads and the first internal threads are in the same rotation direction, and the second external threads on the locking ring are in threaded connection with the second internal threads on the shell.
Further, in the quick-dismantling hydrogen peroxide decomposition device, the step groove is formed in the locking ring, the inflatable sealing ring is arranged on the step groove, the connecting hole communicated with the step groove is formed in the locking ring, and the inflatable end of the inflatable sealing ring penetrates through the connecting hole and then protrudes outwards.
Furthermore, in the quick-dismantling hydrogen peroxide decomposing device, the two air filter nets are provided with the high-temperature-resistant sealing rings, and the two air filter nets are closely attached to the layered manganese dioxide plate through the high-temperature-resistant sealing rings.
Further, the quick-dismantling hydrogen peroxide decomposing device is characterized in that the two air filter screens are a primary filter screen and a HEPA filter screen respectively, one end provided with the primary filter screen is a steam inlet, and one end provided with the HEPA filter screen is a steam outlet.
Further, the quick-dismantling type hydrogen peroxide decomposing device comprises two layered manganese dioxide plates positioned at two ends of the thick film heating pipe and respectively flush with two ends of the thick film heating pipe, and when the primary filter screen and the HEPA filter screen are respectively attached to the two layered manganese dioxide plates, the primary filter screen and the HEPA filter screen are abutted to two ends of the thick film heating pipe.
Further, in the quick-dismantling hydrogen peroxide decomposing device, the heat insulation layer is coated on the shell.
Further, in the quick-dismantling hydrogen peroxide decomposing device, the thick film heating pipe is connected with an electric wire, and the electric wire penetrates through the shell and the heat insulation layer and then is connected with the temperature controller.
Further, in the quick-dismantling hydrogen peroxide decomposing device, the heat dissipation ring is made of a copper-aluminum alloy ring.
The utility model has the advantages that: the honeycomb holes are arranged on the layered manganese dioxide plate, so that hydrogen peroxide vapor can be fully contacted with the layered manganese dioxide plate, and the hydrogen peroxide decomposition efficiency of manganese dioxide is improved; the inner cavity of the shell and the layered manganese dioxide plate can be heated through the thick film heating pipe and the heat dissipation ring, the hydrogen peroxide decomposing efficiency of the manganese dioxide is further improved through high temperature, water decomposed at high temperature is directly vaporized into water vapor, the water vapor and the oxygen can be discharged outwards together, and accumulated water cannot be formed in the shell; when changing the filter screen or overhauling, only need to be with the gassing of inflatable seal circle, then the anti-spin locking clamping ring makes locking clamping ring and casing break away from mutually, just can take out the casing and carry out filter screen change work or overhaul work, need not tear open the connection structure between neck flange and pipeline or other flanges, not only improved work efficiency, but also can guarantee the sealed effect between neck flange and pipeline or other flanges.
Drawings
Fig. 1 is a schematic sectional view of a quick-dismantling hydrogen peroxide decomposing apparatus according to the present utility model.
Detailed Description
The technical scheme of the utility model is further described below with reference to the attached drawings and the preferred embodiments.
As shown in fig. 1, the quick-release hydrogen peroxide decomposing apparatus according to the present utility model includes: a shell 1, a heat insulation layer 11 is covered on the shell 1, a thick film heating pipe 2 is arranged in the shell 1, an electric wire is connected on the thick film heating pipe 2, the electric wire is connected with a temperature controller after passing through the shell 1 and the heat insulation layer 11, the heating temperature of the thick film heating pipe 2 can be accurately controlled through the temperature controller, a plurality of layered manganese dioxide plates 21 are arranged in the middle of the thick film heating pipe 2, the layered manganese dioxide plates 21 are formed by high-temperature sintering and solidification, honeycomb holes 22 are arranged on the layered manganese dioxide plates 21, hydrogen peroxide vapor can be fully contacted with the layered manganese dioxide plates 21 through arranging the honeycomb holes 22, due to poor heat conduction and heat dissipation effects of the layered manganese dioxide plates 21, a heat dissipation ring 23 made of copper-aluminum alloy is arranged between every two adjacent layered manganese dioxide plates 21, when the thick film heating pipe 2 is heated, the heat dissipation ring 23 can dissipate heat into the whole shell 1, the laminar manganese dioxide plates 21 are heated by being matched with the thick film heating pipe 2 to assist in heating the laminar manganese dioxide plates 21, the two laminar manganese dioxide plates 21 positioned at the two ends of the thick film heating pipe 2 are respectively flush with the two ends of the thick film heating pipe 2, an air filter screen is respectively arranged in the inner cavities of the two ends of the shell 1, the two air filter screens are respectively a primary filter screen 3 and a HEPA filter screen 31, one end provided with the primary filter screen 3 is a steam inlet, and one end provided with the HEPA filter screen 31 is a steam outlet, so that when the external hydrogen peroxide gas enters the shell 1 from the primary filter screen 3 of the steam inlet, the primary filter screen 3 can filter out particles with larger volume, then the hydrogen peroxide gas is decomposed after being contacted with the laminar manganese dioxide plates 21, finally the hydrogen peroxide gas is discharged from the steam outlet after passing through the HEPA filter screen 31, the fine particles in the vapor after the decomposition of the hydrogen peroxide vapor are filtered by the HEPA filter screen, the discharged vapor is guaranteed to be clean, and the primary filter screen 3 is arranged at the vapor inlet to prevent the damage of large particles to the HEPA filter screen 31, improve the service life of the HEPA filter screen 31, reduce the replacement frequency of the HEPA filter screen 31 and reduce the cost. All be provided with high temperature resistant sealing washer 32 on primary filter screen 3 and HEPA filter screen 31, primary filter screen 3 and HEPA filter screen 31 are supported respectively and are leaned on being located the lamellar manganese dioxide board 21 at thick film heating pipe 2 both ends, and make primary filter screen 3 and HEPA filter screen 31 respectively with the lamellar manganese dioxide board 21 sealing laminating at thick film heating pipe 2 both ends through high temperature resistant sealing washer 32, just so can prevent hydrogen peroxide gas leakage, when primary filter screen 3 and HEPA filter screen 31 paste respectively and lean on two lamellar manganese dioxide board 21, primary filter screen 3 and HEPA filter screen 31 support simultaneously and lean on the both ends of thick film heating pipe 2, just so just can fix thick film heating pipe 2, be connected with a quick detach joint respectively at the both ends of casing 1, the quick detach joint includes: the filter comprises a neck flange 4 and a locking ring 41, wherein a first external thread is arranged on the outer side wall of the neck flange 4, a first internal thread is arranged on the inner hole wall of the locking ring 41, polytetrafluoroethylene raw material is wound on the first external thread of the neck flange 4, then the first external thread of the neck flange 4 is in threaded connection with the first internal thread of the locking ring 41, so that the sealing performance between the neck flange 4 and the locking ring 41 can be improved, a second external thread is arranged on the outer side wall of the locking ring 41, the second external thread has the same rotation direction as the first external thread, a second internal thread is arranged on the inner walls of the two ends of the shell 1, the second internal thread has the same rotation direction as the first internal thread, the second external thread of the locking ring 41 is in threaded connection with the second internal thread of the shell 1, two locking rings 41 in threaded connection with the two ends of the shell 1 are respectively abutted against an initial filter screen 3 and a HEPA 31, a step groove is formed in the locking ring 41, an inflation sealing ring 42 is arranged on the step groove, an inflation filter screen 43 is arranged on the step groove, and the inflation filter screen 42 is connected with the initial filter screen 31 in a sealing ring 31 through the step groove, and the inflation filter screen 43 is in the inflation ring 31 when the initial filter screen is in contact with the initial filter screen 31, and the inflation ring 31 is in the inflation ring 31, and the inflation filter screen is in the inflation ring 31 is in the inflation ring and the inflation ring 31.
When the hydrogen peroxide decomposing device is used, the filter screen needs to be replaced periodically and overhauled periodically, the traditional hydrogen oxide decomposing device is required to be detached from the pipeline or other flanges, then the whole hydrogen peroxide decomposing device is taken down to replace the filter screen or overhauling work, but the connection process between the flange and the pipeline or other flanges is complex, good tightness also needs to be ensured, if the disassembly and assembly are carried out frequently, the overhauling efficiency is reduced, and the sealing performance between the flange and the pipeline or other flanges is also reduced.
When the quick-dismantling hydrogen peroxide decomposing device is used for replacing a filter screen or periodically overhauling, only the inflatable sealing ring 42 is required to be deflated, then the locking rings 41 are reversely screwed to separate the locking rings 41 from the shell 1, when the two locking rings 41 are not connected with the shell 1 any more, the shell 1 can be taken out, the locking rings 41 are positioned on the neck flange 4, at this time, the filter screen replacement work or overhauling work can be carried out, the work of detaching the neck flange 4 from a pipeline or other flanges is omitted, the working efficiency is improved, and the sealing effect between the neck flange 4 and the pipeline or other flanges can be ensured.
The working principle is as follows: the temperature of the thick film heating pipe 2 is heated to 100-150 ℃ through the temperature controller, the thick film heating pipe 2 emits heat into the whole shell 1 through the heat dissipation ring 23 after being heated, the temperature of the inner cavity of the shell 1 is always kept at about 60-80 ℃, all the layered manganese dioxide plates 21 are uniformly heated by radiating hot air in the shell 1, hydrogen peroxide vapor enters the shell 1 from a vapor inlet and is firstly subjected to rough filtration by the primary filter screen 3, the hydrogen peroxide vapor is still in a vapor state at high temperature after entering the shell 1, no condensation phenomenon occurs, so that the hydrogen peroxide vapor in the vapor state can float to the honeycomb holes 22 in the layered manganese dioxide plates 21 to be fully contacted with the layered manganese dioxide plates 21, the hydrogen peroxide decomposition efficiency of manganese dioxide at high temperature can be greatly improved, the decomposition of the hydrogen peroxide vapor is accelerated, the decomposed hydrogen peroxide vapor is not condensed into liquid water in the environment of 60-80 ℃, and the decomposed oxygen is discharged from the liquid exhaust port after being filtered by the HEPA filter screen 31, and thus no water is accumulated in the shell 1.
The quick-dismantling hydrogen peroxide decomposing device has two using methods, one is connected with pipeline circulation sterilizing equipment: the neck flange 4 at the steam outlet is connected with a return pipe in the pipeline circulation disinfection device, and the neck flange 4 at the steam inlet is connected with a return air inlet on the chamber, so that the pipeline circulation disinfection device sprays hydrogen peroxide gas into the chamber, the hydrogen peroxide gas enters a quick-dismantling hydrogen peroxide decomposition device through the return air inlet for decomposition after the disinfection work is completed, and the decomposed oxygen and water vapor enter the pipeline circulation disinfection device for outward discharge; the other is used alone: the hydrogen peroxide sterilizer and the quick-dismantling hydrogen peroxide decomposition device are put into the cavity together, the neck flange 4 of the steam inlet is connected with the motor fan through the fan connecting flange, the neck flange 4 of the steam outlet is connected with the condenser through the pipeline, so that the hydrogen peroxide sterilizer sprays hydrogen peroxide gas in the cavity, after the hydrogen peroxide gas completes the sterilization work, the fan pumps the hydrogen peroxide gas into the quick-dismantling hydrogen peroxide decomposition device for decomposition, the decomposed water vapor and oxygen enter the condenser for cooling, and finally the hydrogen peroxide gas is discharged outwards.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the utility model without departing from the spirit and scope of the utility model, which is intended to be covered by the claims.
Claims (9)
1. Quick detach formula hydrogen peroxide decomposition device, its characterized in that: comprising the following steps: the thick film heating pipe is arranged in the shell, a plurality of layered manganese dioxide plates are arranged in the middle of the thick film heating pipe, honeycomb holes are formed in the layered manganese dioxide plates, heat dissipation rings are arranged between every two adjacent layered manganese dioxide plates, an air filter screen is respectively arranged in inner cavities at two ends of the shell, the two air filter screens respectively lean against the layered manganese dioxide plates at two ends of the thick film heating pipe, two quick-release connectors are respectively connected at two ends of the shell, and the quick-release connectors comprise: the air filter comprises a neck flange and a locking ring, wherein a first external thread is arranged on the outer side wall of the neck flange, a first internal thread is arranged on the inner hole wall of the locking ring, the first external thread on the neck flange is in threaded connection with the first internal thread on the locking ring, and the locking ring is clamped into the shell and is abutted against the air filter.
2. The quick-release hydrogen peroxide decomposition apparatus of claim 1, wherein: the outer side wall of the locking ring is provided with second external threads, the second external threads are in the same screwing direction with the first external threads, the inner walls of the two ends of the shell are provided with second internal threads, the second internal threads are in the same screwing direction with the first internal threads, and the second external threads on the locking ring are in threaded connection with the second internal threads on the shell.
3. The quick-release hydrogen peroxide decomposition apparatus of claim 2, wherein: the step groove is formed in the locking ring, the inflatable sealing ring is arranged on the step groove, the connecting hole communicated with the step groove is formed in the locking ring, and the inflatable end of the inflatable sealing ring penetrates through the connecting hole and then extends outwards.
4. A quick release hydrogen peroxide decomposition apparatus according to claim 1 or 2 or 3, wherein: the two air filter screens are respectively provided with a high-temperature-resistant sealing ring, and the two air filter screens are closely attached to the layered manganese dioxide plate through the high-temperature-resistant sealing rings.
5. The quick-release hydrogen peroxide decomposition apparatus of claim 4, wherein: the two air filter screens are a primary filter screen and a HEPA filter screen respectively, one end provided with the primary filter screen is a steam inlet, and one end provided with the HEPA filter screen is a steam outlet.
6. The quick-release hydrogen peroxide decomposition apparatus according to claim 5, wherein: two layered manganese dioxide plates positioned at two ends of the thick film heating pipe are respectively flush with two ends of the thick film heating pipe, and when the primary filter screen and the HEPA filter screen are respectively attached to the two layered manganese dioxide plates, the primary filter screen and the HEPA filter screen are abutted to the two ends of the thick film heating pipe.
7. The quick-release hydrogen peroxide decomposition apparatus of claim 1, wherein: the shell is coated with a heat insulation layer.
8. The quick-release hydrogen peroxide decomposition apparatus of claim 7, wherein: the thick film heating pipe is connected with a wire which passes through the shell and the heat insulation layer and then is connected with the temperature controller.
9. The quick-release hydrogen peroxide decomposition apparatus of claim 1, wherein: the heat dissipation ring is made of copper-aluminum alloy rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320280871.8U CN219631023U (en) | 2023-02-22 | 2023-02-22 | Quick-dismantling hydrogen peroxide decomposing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320280871.8U CN219631023U (en) | 2023-02-22 | 2023-02-22 | Quick-dismantling hydrogen peroxide decomposing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219631023U true CN219631023U (en) | 2023-09-05 |
Family
ID=87808027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320280871.8U Active CN219631023U (en) | 2023-02-22 | 2023-02-22 | Quick-dismantling hydrogen peroxide decomposing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219631023U (en) |
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2023
- 2023-02-22 CN CN202320280871.8U patent/CN219631023U/en active Active
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