CN218321021U - High-concentration salt water zero-discharge system for iron and steel production enterprises - Google Patents
High-concentration salt water zero-discharge system for iron and steel production enterprises Download PDFInfo
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- CN218321021U CN218321021U CN202221628265.2U CN202221628265U CN218321021U CN 218321021 U CN218321021 U CN 218321021U CN 202221628265 U CN202221628265 U CN 202221628265U CN 218321021 U CN218321021 U CN 218321021U
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- ozone oxidation
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- reverse osmosis
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 120
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 24
- 239000010959 steel Substances 0.000 title claims abstract description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 10
- 150000003839 salts Chemical class 0.000 title description 14
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000003647 oxidation Effects 0.000 claims abstract description 28
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 28
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 26
- 239000012267 brine Substances 0.000 claims abstract description 24
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 24
- 238000005189 flocculation Methods 0.000 claims abstract description 18
- 230000016615 flocculation Effects 0.000 claims abstract description 18
- 238000001704 evaporation Methods 0.000 claims abstract description 17
- 230000008020 evaporation Effects 0.000 claims abstract description 16
- 238000001179 sorption measurement Methods 0.000 claims abstract description 16
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 16
- 239000011347 resin Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 238000009287 sand filtration Methods 0.000 claims abstract description 12
- 239000013505 freshwater Substances 0.000 claims abstract description 11
- 238000003860 storage Methods 0.000 claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 4
- CYUOWZRAOZFACA-UHFFFAOYSA-N aluminum iron Chemical compound [Al].[Fe] CYUOWZRAOZFACA-UHFFFAOYSA-N 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000006004 Quartz sand Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000002356 single layer Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- 208000028659 discharge Diseases 0.000 description 8
- 238000004070 electrodeposition Methods 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000012266 salt solution Substances 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000010612 desalination reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005373 pervaporation Methods 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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- 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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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- Separation Using Semi-Permeable Membranes (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The utility model relates to a zero discharge system of high-concentration brine in iron and steel production enterprises, which comprises an adjusting tank, an ozone oxidation device, an electric flocculation device, an electric adsorption device, a sand filtration device, an ultrafiltration device, a resin softening device and a reverse osmosis device which are connected in sequence; the electro-adsorption device is provided with a concentrated water backflow port I, and the concentrated water backflow port I is connected with the regulating tank; the ultrafiltration device is provided with a second concentrated water return port which is connected with the regulating tank; the reverse osmosis device is provided with a concentrated water outlet which is connected with a water inlet of the second-stage ozone oxidation device, a produced water outlet III is connected with a fresh water storage tank, and a water outlet of the second-stage ozone oxidation device is connected with a water inlet of the multi-effect evaporation device. The advantages are that: can come out steel manufacturing enterprise's high enriched brine, realize the recovery of metallurgical high enriched brine, the energy consumption is little, and is with low costs, and the treatment effect is stable.
Description
Technical Field
The utility model belongs to the technical field of industrial waste water handles, especially, relate to a high enriched salt solution zero release system of steel manufacturing enterprise.
Background
Further reducing the new water consumption per ton of steel in iron and steel enterprises, improving the water recycling rate of the iron and steel enterprises, and enhancing the comprehensive treatment and recycling of the wastewater of the iron and steel enterprises are one of the keys for realizing the sustainable development of the iron and steel enterprises in China.
The reuse of wastewater is the final target of wastewater treatment, but after the wastewater is subjected to reverse osmosis treatment, most of primary pure water is obtained, and simultaneously, a large proportion of high-salinity concentrated water is also produced, the concentrated water is an inevitable product of a reverse osmosis desalination process, contains high organic matters and salt concentration, and the concentrated water content is about 25% of the reverse osmosis treatment water content. For the high-salinity concentrated water, the treatment method at the present stage is basically direct discharge, which causes a great deal of resource waste and environmental pollution.
In the prior art, patent application No. CN201010283192.3 discloses a desalination treatment process for strong brine, which adopts a pervaporation technology to desalt the strong brine and recover purified water. The process can maximally concentrate the strong brine, and has high desalination rate and low effluent conductivity. However, the technology has high energy consumption, needs to heat the strong brine to more than 60 ℃, can only remove salt in the strong brine, and cannot remove COD in the strong brine.
Patent application No. CN201110212189.7 discloses a strong brine processing system, and the upper portion of electro-deposition box is connected through adjustment pond elevator pump in the adjustment pond, and the lower part of electro-deposition box and the pipeline between adjustment pond elevator pump to the electro-deposition box are connected respectively to the circulating pump. An electrodeposition polar plate is arranged in the electrodeposition box body, and the electrodeposition box body is sequentially connected with an electromagnetic flocculator, an inclined plate precipitator and a clear water tank. The clean water tank is connected with a water supply pump, and the water supply pump outputs treated water. The technology can not remove ammonia nitrogen and nitrate nitrogen in the strong brine, and has a complex structure and is not easy to operate and manage.
Patent application No. CN201310012301.1 discloses a strong brine zero-discharge treatment process for an iron and steel plant, which adopts a three-level reverse osmosis process to concentrate waste water and then carries out evaporation crystallization. The concentration of the three-stage reverse osmosis has high operation cost, and the process does not consider the problems of organic matter pollution, inorganic matter scaling and the like of the reverse osmosis membrane, so that the popularization and the application are limited.
Patent application No. CN201310218148.8 discloses a high-efficiency liquid zero-discharge wastewater treatment method and system, although the system has the advantage of low efficiency and high energy consumption, the obtained mixed salt cannot be disposed to become secondary pollutants, even dangerous waste, and therefore the problem of recycling of solid salts is not solved, and further development of enterprises is still troubled.
In conclusion, the existing metallurgical wastewater treatment process has the defects of poor treatment effect, serious membrane pollution, low water yield of a system and overhigh process operation cost. Therefore, an efficient zero-emission system for high-concentration brine of steel production enterprises is developed, and the adverse effect of the discharge of the comprehensive steel wastewater on the surrounding water area environment can be greatly reduced.
Disclosure of Invention
For overcoming prior art's not enough, the utility model aims at providing a high enriched salt solution zero release system of steel manufacturing enterprise, to the strong brine that steel enterprise discharged, carry out ozone oxidation, electric flocculation, electrosorption, sand filtration, ultrafiltration, softening resin, reverse osmosis, ozone oxidation and multiple-effect evaporation treatment with it in proper order, the evaporation crystalline salt reaches industrial level salt standard when making metallurgical high enriched salt solution realize retrieving, realizes the target of metallurgical high enriched salt solution zero release.
In order to achieve the above object, the utility model discloses a following technical scheme realizes:
a zero discharge system of high-concentration brine of iron and steel production enterprises is composed of an adjusting tank, an ozone oxidation device, an electric flocculation device, an electric adsorption device, a sand filtration device, an ultrafiltration device, a resin softening device, a reverse osmosis device, a secondary ozone oxidation device, a fresh water storage tank and a multi-effect evaporation device;
the water outlet of the regulating tank is connected with the water inlet of the ozone oxidation device, the water outlet of the ozone oxidation device is connected with the water inlet of the electric flocculation device, and the water outlet of the electric flocculation device is connected with the water inlet of the electric adsorption device; the electro-adsorption device is provided with a concentrated water backflow port I and a produced water outlet I, the concentrated water backflow port I is connected with the regulating tank, and the produced water outlet I is connected with a water inlet of the sand filtration device; the water outlet of the sand filtering device is connected with the water inlet of the ultrafiltration device; the ultrafiltration device is provided with a concentrated water backflow port II and a produced water outlet II, the concentrated water backflow port II is connected with the regulating tank, the produced water outlet II is connected with the water inlet of the resin softening device, the water outlet of the resin softening device is connected with the water inlet of the reverse osmosis device, the reverse osmosis device is provided with a concentrated water outlet and a produced water outlet III, the concentrated water outlet is connected with the water inlet of the second-stage ozone oxidation device, the produced water outlet III is connected with the fresh water storage tank, and the water outlet of the second-stage ozone oxidation device is connected with the water inlet of the multiple-effect evaporation device.
The electrode of the electric flocculation device is an aluminum-iron polar plate.
A single-layer quartz sand homogeneous filter material is arranged in the sand filter device.
The regulating reservoir is connected with the metering pump.
Compared with the prior art, the beneficial effects of the utility model are that:
the high-concentration brine zero-discharge system of the steel production enterprise can sequentially carry out ozone oxidation, electric flocculation, electric adsorption, sand filtration, ultrafiltration, softening resin, reverse osmosis, ozone oxidation and multi-effect evaporation treatment on the high-concentration brine of the steel production enterprise, realizes the recovery of metallurgical high-concentration brine, and finally the solid salt subjected to evaporation crystallization treatment by the multi-effect evaporation device reaches the industrial salt standard, so that the energy consumption is low, the cost is low, and the treatment effect is stable.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-adjusting tank 2-ozone oxidation device 3-electric flocculation device 4-electric adsorption device 5-sand filtration device 6-ultrafiltration device 7-resin softening device 8-reverse osmosis device 9-second-stage ozone oxidation device 10-multi-effect evaporation device 11-fresh water storage tank 12-concentrated water reflux inlet one 13-produced water outlet one 14-concentrated water reflux inlet two 15-produced water outlet two 16-concentrated water outlet 17-produced water outlet three.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.
Referring to fig. 1, the high-concentration brine zero-discharge system for the steel production enterprises is composed of a regulating reservoir 1, an ozone oxidation device 2, an electric flocculation device 3, an electric adsorption device 4, a sand filtration device 5, an ultrafiltration device 6, softened resin 7, a reverse osmosis device 8, a secondary ozone oxidation device 9, a fresh water storage reservoir 11 and a multi-effect evaporation device 10.
High-concentration salt water generated by steel production enterprises enters an adjusting tank 1 to balance water quality and water quantity, the adjusting tank 4 not only adjusts the water quantity of wastewater, but also adds acid liquor or alkali liquor into the adjusting tank 1 through a connected metering pump to adjust the pH value of the wastewater, a water outlet of the adjusting tank 1 is connected with a water inlet of an ozone oxidation device 2, under the strong oxidation action of ozone, organic matters which cannot be biodegraded in the wastewater are oxidized into micromolecule organic matters which are easy to biodegrade or are partially mineralized by the ozone, a water outlet of the ozone oxidation device 2 is connected with a water inlet of an electric flocculation device 3, after the electric flocculation treatment, metal ions such as suspended matters, calcium, magnesium and the like in the wastewater are effectively reduced, and a water outlet of the electric flocculation device 3 is connected with a water inlet of the electric adsorption device 4; the electro-adsorption device 4 adsorbs ions and charged particles in water by using a charged electrode, so that dissolved salts and other charged substances are enriched and concentrated on the surface of the electrode to realize wastewater purification. The electric adsorption device 4 is provided with a concentrated water backflow port I12 and a produced water outlet I13, the concentrated water backflow port I12 is connected with the adjusting tank 1, concentrated water generated by the electric adsorption device 4 flows back into the adjusting tank 1 for cyclic treatment, the produced water outlet I13 is connected with a water inlet of the sand filtration device 5, produced water treated by the electric adsorption device 4 enters the sand filtration device 5, the turbidity and suspended matters of the filtered effluent are further reduced, and a water outlet of the sand filtration device 5 is connected with a water inlet of the ultrafiltration device 6; the ultrafiltration device 6 is provided with a concentrated water backflow port II 14 and a produced water outlet II 15, the concentrated water backflow port II 14 is connected with the regulating reservoir 1, suspended matters and colloid pollutants in the wastewater are further intercepted through an ultrafiltration membrane, the concentrated water of the ultrafiltration device 6 flows back into the regulating reservoir 1 for circular treatment, the produced water outlet II 15 is connected with a water inlet of the resin softening device 7, the residual metal ions such as calcium and magnesium in the wastewater are adsorbed through the exchange performance of the resin softening device 7, the pollution of the wastewater on the subsequent reverse osmosis device 8 is reduced, the service life of the equipment is prolonged, a water outlet of the resin softening device 7 is connected with a water inlet of the reverse osmosis device 8, the effluent treated by the resin softening device 7 enters the reverse osmosis device 8 for concentration and separation, most of salt and micromolecule organic matters and the like in the wastewater are intercepted, the reverse osmosis device 8 is provided with a concentrated water outlet 16 and a produced water outlet III 17, the concentrated water outlet 16 is connected with a water inlet of the secondary ozone oxidation device 9, the produced water outlet III 17 of the produced water is connected with a fresh water reservoir 11, the fresh water reservoir 8 of the fresh water storage device 8, the fresh water can be used by a user, and the ozone of the secondary oxidation device 8 is further connected with a secondary reverse osmosis device, and a water inlet of the secondary reverse osmosis device 9, and a secondary reverse osmosis device 10 of the secondary reverse osmosis device. And evaporating and crystallizing by using a multi-effect evaporation device 10 to finally obtain high-purity sodium chloride and sodium sulfate crystal salt products. The specific multi-effect evaporation device 10 adopts a four-effect evaporation crystallization process to finally obtain high-purity sodium chloride and sodium sulfate crystallized salt products.
Wherein, the electrode of the electric flocculation device 3 is an aluminum-iron polar plate, and a periodic reversing power supply can be adopted to exchange the cathode and the anode of the electric flocculation, thereby effectively reducing the problems of passivation of the electrode and current reduction in the reaction.
Utilize the utility model discloses the high enriched brine that the device produced to steel manufacturing enterprise handles, and the treatment process energy consumption is little, and is with low costs, and the treatment effect is stable.
Claims (4)
1. A zero discharge system of high-concentration brine in iron and steel production enterprises is characterized by consisting of a regulating reservoir, an ozone oxidation device, an electric flocculation device, an electric adsorption device, a sand filtration device, an ultrafiltration device, a resin softening device, a reverse osmosis device, a secondary ozone oxidation device, a fresh water storage reservoir and a multi-effect evaporation device;
the water outlet of the regulating tank is connected with the water inlet of the ozone oxidation device, the water outlet of the ozone oxidation device is connected with the water inlet of the electric flocculation device, and the water outlet of the electric flocculation device is connected with the water inlet of the electric adsorption device; the electro-adsorption device is provided with a concentrated water backflow port I and a produced water outlet I, the concentrated water backflow port I is connected with the regulating tank, and the produced water outlet I is connected with a water inlet of the sand filtration device; the water outlet of the sand filtering device is connected with the water inlet of the ultrafiltration device; the ultrafiltration device is provided with a concentrated water backflow port II and a produced water outlet II, the concentrated water backflow port II is connected with the regulating tank, the produced water outlet II is connected with the water inlet of the resin softening device, the water outlet of the resin softening device is connected with the water inlet of the reverse osmosis device, the reverse osmosis device is provided with a concentrated water outlet and a produced water outlet III, the concentrated water outlet is connected with the water inlet of the second-stage ozone oxidation device, the produced water outlet III is connected with the fresh water storage tank, and the water outlet of the second-stage ozone oxidation device is connected with the water inlet of the multiple-effect evaporation device.
2. The system of claim 1, wherein the electrodes of the electric flocculation apparatus are aluminum-iron plates.
3. The zero discharge system of high-concentration brine of steel manufacturing enterprises as claimed in claim 1, wherein a single-layer quartz sand homogeneous filter material is arranged in the sand filtering device.
4. The system for zero discharge of high-concentration brine in steel manufacturing enterprises according to claim 1, wherein the regulating tank is connected with a metering pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221628265.2U CN218321021U (en) | 2022-06-28 | 2022-06-28 | High-concentration salt water zero-discharge system for iron and steel production enterprises |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221628265.2U CN218321021U (en) | 2022-06-28 | 2022-06-28 | High-concentration salt water zero-discharge system for iron and steel production enterprises |
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| Publication Number | Publication Date |
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| CN218321021U true CN218321021U (en) | 2023-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221628265.2U Active CN218321021U (en) | 2022-06-28 | 2022-06-28 | High-concentration salt water zero-discharge system for iron and steel production enterprises |
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| Country | Link |
|---|---|
| CN (1) | CN218321021U (en) |
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- 2022-06-28 CN CN202221628265.2U patent/CN218321021U/en active Active
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