CN214655278U - Recovery device for electrolytic residual liquid of chlorine dioxide generator by electrolytic method - Google Patents
Recovery device for electrolytic residual liquid of chlorine dioxide generator by electrolytic method Download PDFInfo
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- CN214655278U CN214655278U CN202121080667.9U CN202121080667U CN214655278U CN 214655278 U CN214655278 U CN 214655278U CN 202121080667 U CN202121080667 U CN 202121080667U CN 214655278 U CN214655278 U CN 214655278U
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- residual liquid
- chlorine dioxide
- electrolytic
- electrolysis
- dioxide generator
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- 239000007788 liquid Substances 0.000 title claims abstract description 98
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 239000004155 Chlorine dioxide Substances 0.000 title claims abstract description 39
- 235000019398 chlorine dioxide Nutrition 0.000 title claims abstract description 39
- 238000011084 recovery Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910001868 water Inorganic materials 0.000 claims abstract description 43
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 37
- 238000005086 pumping Methods 0.000 claims abstract description 18
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000009792 diffusion process Methods 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 7
- 239000003792 electrolyte Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000000645 desinfectant Substances 0.000 abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 39
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 11
- 239000005708 Sodium hypochlorite Substances 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000000243 solution Substances 0.000 description 9
- 229920000915 polyvinyl chloride Polymers 0.000 description 6
- 239000004800 polyvinyl chloride Substances 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000003085 diluting agent Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 229910001415 sodium ion Inorganic materials 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 229910000619 316 stainless steel Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Water Treatment By Electricity Or Magnetism (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The application provides a recovery device of electrolytic residual liquid of an electrolytic chlorine dioxide generator, which is used for treating the electrolytic residual liquid of the electrolytic chlorine dioxide generator and comprises a box body, a residual liquid collecting pipeline, a residual liquid pumping pipeline and an ejector; the tank body is connected with a residual liquid discharge pipe of an electrolytic bath cathode box of an electrolytic chlorine dioxide generator through a residual liquid collecting pipeline; the liquid inlet end of the residual liquid pumping pipeline is positioned in the box body, and the liquid outlet end of the residual liquid pumping pipeline is communicated with the water inlet of the ejector; the chemical adding port of the jet device is used for introducing a pressurized hypochlorous acid solution, and the diffusion section of the jet device is provided with at least 3 groups of fixed guide vanes. The recovery device is used for treating the electrolysis residual liquid after the chlorine dioxide disinfectant is produced, and can avoid the pollution of cathode discharge to the environment.
Description
Technical Field
The application belongs to the technical field of hypochlorous acid disinfection, and particularly relates to a recovery device for electrolysis residual liquid of an electrolysis chlorine dioxide generator.
Background
The chlorine dioxide generator by electrolysis is a short for chlorine dioxide synergistic disinfectant generator by salt electrolysis, and the raw material of the chlorine dioxide synergistic disinfectant generator is mainly saturated salt water. In the existing complete equipment of the chlorine dioxide generator by the electrolytic method, an electrolytic system is generally composed of an electrolytic power supply, an electrolytic bath and a salt dissolving tank. The inside of the electrolytic cell is mainly provided with an anode and a cathode, and an ionic membrane is arranged between the anode and the cathode and used for separating electrolytic products of the two electrodes. Dissolving salt in the salt dissolving tank and supplying saturated salt solution to the electrolytic tank for electrolysis, wherein H is generated at the anode in the electrolysis process+And Cl2OH is generated at the cathode-And H2(ii) a The ionic membrane between the two electrodes only allows Na+The unidirectional cathode direction smoothly passes through without passing through chloride ions.
Wherein, the reaction formula related to the equipment electrode is as follows:
during the use of the device, the cathode and the anode of the electrolytic cell can generate electrolytic concentration phenomenon, and in order to ensure the electrolytic efficiency, the electrolytic cell can continuously circulate and supplement certain new electrolyte. When the anode is electrolyzed to electrolyze salt, water is electrolyzed, and the new electrolyte supplemented is just balanced; due to the existence of the ionic membrane, sodium ions move to the cathode in a unidirectional mode and combine with hydroxide radicals generated by the cathode to form sodium hydroxide, and new water needs to be introduced to dilute and discharge along with electrolytic concentration. The prior discharging mode is to directly discharge the electrolysis residual liquid, which causes the discharge of alkali to exceed the standard after a long time and is not beneficial to environmental protection.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present application provides a device for recovering an electrolysis residual liquid of an electrolytic chlorine dioxide generator, which is used for treating the electrolysis residual liquid after producing a chlorine dioxide disinfectant, and can prevent the pollution of cathode discharge to the environment.
The application provides a recovery device of electrolytic residual liquid of an electrolytic chlorine dioxide generator, which is used for treating the electrolytic residual liquid of the electrolytic chlorine dioxide generator and comprises a box body, a residual liquid collecting pipeline, a residual liquid pumping pipeline and an ejector; the ejector is provided with a water inlet, a chemical feeding port, a diffusion section and a water outlet;
the tank body is connected with a residual liquid discharge pipe of an electrolytic bath cathode box of an electrolytic chlorine dioxide generator through a residual liquid collecting pipeline; the liquid inlet end of the residual liquid pumping pipeline is positioned in the box body, and the liquid outlet end of the residual liquid pumping pipeline is communicated with the water inlet of the ejector;
the chemical adding port of the jet device is used for introducing a pressurized hypochlorous acid solution, and the diffusion section of the jet device is provided with at least 3 groups of fixed guide vanes.
In the embodiment of the application, the diffusion section of the ejector is vertically provided with 3-5 groups of fixed guide vanes, and the fixed guide vanes are parallel.
In the embodiment of the application, the dosing port of the ejector is connected with a residual liquid discharge pipe of an anode box of an electrolytic cell of an electrolytic chlorine dioxide generator through a pressure regulating unit.
In an embodiment of the application, the water outlet of the ejector is connected to the body of water to be disinfected through a pipeline.
In an embodiment of the application, the recovery device further comprises a pressure balancing line for balancing the pressure caused by the liquid fluctuation in the tank.
In an embodiment of the present application, the case has a viewing window; the recovery device further comprises a liquid level control unit.
In order to solve the problem of discharging the residual sodium hydroxide in the electrolysis of the chlorine dioxide generator by an electrolysis method, the application provides a recovery device of a new equipment system, the recovery device mainly comprises a box body, a residual liquid collecting pipeline, a residual liquid pumping pipeline and an ejector, the device firstly collects sodium hydroxide diluent discharged by a cathode box through the residual liquid collecting pipeline, and temporarily stored in the box body, the hypochlorous acid solution with pressure introduced by the ejector generates negative pressure, the electrolysis residual liquid temporarily stored in the box body is pumped out through a residual liquid pumping pipeline, the hypochlorous acid and sodium hydroxide react in the pipeline to generate sodium hypochlorite and water, the diffusion section of the ejector is provided with a static mixing guide vane structure, the reaction is more complete, the obtained sodium hypochlorite can be reused, and the sodium hypochlorite is thrown into a water body to be disinfected, so that the pollution of cathode discharge to the environment is avoided.
Furthermore, the dosing port of the ejector is connected with a residual liquid discharge pipe of an anode box of an electrolytic cell of the chlorine dioxide generator by the electrolytic method through a pressure regulating unit, namely, the diluted hypochlorous acid solution generated by the anode box is used for extracting and reacting the cathode sodium hydroxide solution, zero emission can be realized, and the problem of residual liquid discharge during electrolysis is fundamentally solved.
Drawings
FIG. 1 is a schematic diagram of a device for recovering an electrolytic residual liquid of an electrolytic chlorine dioxide generator according to an embodiment of the present application;
FIG. 2 is a schematic diagram of the internal structure of the diffuser section of the ejector according to some embodiments of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The application provides a recovery device of electrolytic residual liquid of an electrolytic chlorine dioxide generator, which is used for treating the electrolytic residual liquid of the electrolytic chlorine dioxide generator and comprises a box body, a residual liquid collecting pipeline, a residual liquid pumping pipeline and an ejector; the ejector is provided with a water inlet, a chemical feeding port, a diffusion section and a water outlet;
the tank body is connected with a residual liquid discharge pipe of an electrolytic bath cathode box of an electrolytic chlorine dioxide generator through a residual liquid collecting pipeline; the liquid inlet end of the residual liquid pumping pipeline is positioned in the box body, and the liquid outlet end of the residual liquid pumping pipeline is communicated with the water inlet of the ejector;
the chemical adding port of the jet device is used for introducing a pressurized hypochlorous acid solution, and the diffusion section of the jet device is provided with at least 3 groups of fixed guide vanes.
The application provides a recovery unit of electrolysis residual liquid of an electrolysis chlorine dioxide generator, which is used for recovering and treating the electrolysis residual liquid after producing a chlorine dioxide disinfectant and can avoid the pollution of cathode discharge to the environment.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a recovery device of an electrolysis residual liquid of an electrolysis chlorine dioxide generator according to an embodiment of the present application. In fig. 1, 1 is a tank, 2 is a jet device, 3 is a breather pipe, and a line for collecting catholyte and a line for drawing catholyte are not shown in the drawing.
The recovery device in the embodiment of the application has five parts of basic structures, and comprises a box body 1, a residual liquid collecting pipeline, a residual liquid pumping pipeline, a jet device 2 and a vent pipe 3; in addition, the device can also comprise a liquid level control unit, a medicine adding pressure regulating unit and the like.
The box body 1 is used for collecting and temporarily storing the electrolytic raffinate, has a box-shaped structure, is corrosion-resistant, and can be formed by welding high-quality PVC (polyvinyl chloride). Collecting catholyte by a box body 1 through a residual liquid collecting pipeline, wherein the catholyte is sodium hydroxide diluent discharged from a cathode box of an electrolytic cell of a chlorine dioxide generator by an electrolytic method; that is, the box body 1 is connected with the residual liquid discharge pipe of the electrolytic bath through the collecting pipeline, so that the catholyte is introduced into the box body part for temporary storage. The specific volume specification and the like of the box body are not particularly limited in the application; the tank 1 preferably has an observation window for observing the liquid stored therein.
And the residual liquid collecting pipeline is connected with the residual liquid discharge pipe of the electrolytic cell and the recovery device and is made of a UPVC material pipeline. And the tank body 1 is provided with a residual liquid pumping pipeline, the liquid inlet end of the residual liquid pumping pipeline is positioned in the tank body, and the liquid outlet end of the residual liquid pumping pipeline is communicated with the water inlet of the ejector 2, and the residual liquid pumping pipeline can also be made of UPVC material.
The recovery device according to the embodiment of the present application includes an ejector 2, which is also called a water ejector. The water injector generally comprises a water inlet, a dosing port/air suction port, a throat pipe, a diffuser pipe, a water outlet and other structural components; the water inlet of this application ejector 2 (have water inlet, add medicine mouth, diffusion section and delivery port) communicates in the play liquid end of raffinate extraction pipeline, draws the sodium hydroxide diluent of interior interim mellow wine of box through the negative pressure that the medicine produced. Through the medicine adding port of the ejector 2, diluted hypochlorous acid solution generated by the anode of the pressure adjusting unit is preferably added in the device, mainly hypochlorous acid reacts with sodium hydroxide to generate sodium hypochlorite and water, and the sodium hypochlorite and the water can be reused.
In some embodiments of the present application, the chlorine generated at the anode reacts with water to generate hypochlorous acid and hydrochloric acid, and then reacts with the recycled sodium hydroxide to generate sodium hypochlorite, sodium chloride and water; the involved reaction formula is as follows:
hypochlorous acid generation reaction formula:
the sodium hypochlorite reaction process:
(Total reaction: HCl + HClO + NaOH ═ NaCl + NaClO + 2H)2O).
In the water ejector, hypochlorous acid solution with pressure is fed through a venturi and generates negative pressure through a throat pipe, and electrolytic residual liquid in a box body is pumped out and sent to a pressure expansion section of the water ejector; with a minimum flow of 0.1 l/min. In the embodiment of the application, the diffuser section of the ejector is preferably vertically provided with 3-5 groups of fixed guide vanes, the fixed guide vanes are parallel, and the mixing effect can be seen in the internal structure of the diffuser section of the ejector shown in fig. 2.
In fig. 2, a plurality of static mixing guide vanes are arranged in the diffusion section pipeline of the ejector, the pipeline structure enables the reaction to be more complete, sodium hypochlorite obtained from a water outlet is reused, and the pipeline structure can be connected to the water to be disinfected through a pipeline, so that the environment is prevented from being polluted by the discharge of the cathode and the anode, and zero discharge can be realized.
Specifically, the diffuser section of the ejector can be formed by bonding single PVC (polyvinyl chloride) or flange connection; generally, the inner surface is provided with 3-5 stages of guide grooves (guide vanes), and the specific specification of the guide is not limited. The material is generally PVC, iron is not recommended, and 316 stainless steel can be used; the pipe diameter is generally DN32 or DN40 or DN 50. This application adopts ejector diffusion section structure, the main objective is extension rivers through-time, and the physical action through the guiding gutter produces the vortex, promotes to mix the abundant reaction.
In some embodiments of the present application, the recovery device further comprises a pressure balancing conduit, such as the vent tube 3 shown in fig. 1, which may be a UPVC conduit, for balancing the pressure caused by the liquid fluctuation in the tank.
In other embodiments of this application, recovery unit still includes the liquid level control unit, mainly is the control of liquid level floater, through opening and close of floater promptly, controls the business turn over box of liquid level, when the box was nearly full-loaded, can provide acousto-optic warning simultaneously.
The treatment capacity of the recovery device for the electrolysis residual liquid of the electrolysis chlorine dioxide generator is 0.5-50L/min; the recovery device is installed according to the size of the ground, and the surface and the ground level of the recovery device are parallel. Specifically, the method comprises the following steps:
connecting an electrolysis residual liquid collecting pipeline with a residual liquid inlet of a recovery device;
the generator dosing pipeline is branched and is connected with the air suction end of the ejector connected with the extraction pipeline of the recovery device;
connecting the water outlet end of the ejector connected with the extraction pipeline of the recovery device with a pipeline of the water body to be disinfected;
connecting the pressure balance pipe of the recovery device outdoors;
and connecting the liquid level control part of the recovery device with a corresponding interface of the power distribution cabinet.
Wherein, the connected electrolysis chlorine dioxide generator can be CN202020606724.1 an ion membrane electrolysis hypochlorous acid disinfectant generating system.
To sum up, this application electrolytic process chlorine dioxide generator electrolysis residual liquid's recovery unit, by the box, residual liquid collection pipeline, residual liquid take out pipeline and ejector etc. and constitute, this device is earlier through residual liquid collection pipeline collection cathode box exhaust sodium hydroxide diluent, and temporary storage is inside the box, the hypochlorous acid solution of the area of recycling ejector to let in produces the negative pressure, the electrolysis residual liquid of keeping in the box is taken out the pipeline via residual liquid, hypochlorous acid and sodium hydroxide take place reaction in the pipeline the inside and generate sodium hypochlorite and water, ejector diffusion section has static mixing guide vane structure, make above-mentioned reaction more complete, the sodium hypochlorite that obtains can reuse, it disinfects to drop into to treat disinfection water inside.
The method fundamentally solves the problem of discharging the electrolysis residual liquid, reuses the sodium hydroxide residual liquid generated by the cathode, solves the problem of alkali discharge (can realize zero discharge of the cathode and the anode), can adjust the pH value of the water body to be treated (when the water quantity of the raw water is large enough, the water quantity can be ignored), and has no environmental pressure. Compared with a direct discharging mode, the novel solar water heater is an innovative product and has remarkable advantages. In addition, the technical advantages of the embodiments of the present application further include:
firstly, a corrosion-resistant PVC plate is welded and formed, and is non-toxic and harmless;
secondly, a design without moving parts is adopted, and hidden danger of operation fault points is not increased;
and thirdly, the equipment can automatically run without operation.
Fourthly, the full-load audible and visual alarm can be carried by the alarm.
The foregoing is only a preferred embodiment of the present application, and it should be noted that various modifications of the embodiments can be implemented by those skilled in the art without departing from the technical principle of the present application, and these modifications should be considered as the scope of the present application.
Claims (6)
1. A recovery unit of electrolysis residual liquid of an electrolysis chlorine dioxide generator is used for treating the electrolysis residual liquid of the electrolysis chlorine dioxide generator and is characterized by comprising a box body, a residual liquid collecting pipeline, a residual liquid extracting pipeline and an ejector; the ejector is provided with a water inlet, a chemical feeding port, a diffusion section and a water outlet;
the tank body is connected with a residual liquid discharge pipe of an electrolytic bath cathode box of an electrolytic chlorine dioxide generator through a residual liquid collecting pipeline; the liquid inlet end of the residual liquid pumping pipeline is positioned in the box body, and the liquid outlet end of the residual liquid pumping pipeline is communicated with the water inlet of the ejector;
the chemical adding port of the jet device is used for introducing a pressurized hypochlorous acid solution, and the diffusion section of the jet device is provided with at least 3 groups of fixed guide vanes.
2. The recovery device for residual electrolysis solution of an electrolytic chlorine dioxide generator according to claim 1, wherein the diffuser section of the ejector is vertically provided with 3-5 groups of fixed guide vanes, and the fixed guide vanes are parallel to each other.
3. The apparatus for recovering residual electrolyte from a chlorine dioxide generator by electrolysis according to claim 1, wherein the dosing port of the ejector is connected to a residual electrolyte discharge pipe of an anode tank of an electrolysis cell of the chlorine dioxide generator by a pressure regulating unit.
4. The apparatus for recovering residual liquid after electrolysis in an electrolytic chlorine dioxide generator according to claim 1, wherein the water outlet of the ejector is connected to the water body to be disinfected through a pipeline.
5. The apparatus for recovering a residual liquid after electrolysis in a chlorine dioxide generator according to any of claims 1 to 4, further comprising a pressure-equalizing line for equalizing the pressure caused by the fluctuation of the liquid in the tank.
6. The apparatus for recovering a residual liquid after electrolysis in an electrolytic chlorine dioxide generator according to any of claims 1 to 4, wherein said tank has an observation window; the recovery device further comprises a liquid level control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121080667.9U CN214655278U (en) | 2021-05-19 | 2021-05-19 | Recovery device for electrolytic residual liquid of chlorine dioxide generator by electrolytic method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121080667.9U CN214655278U (en) | 2021-05-19 | 2021-05-19 | Recovery device for electrolytic residual liquid of chlorine dioxide generator by electrolytic method |
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| Publication Number | Publication Date |
|---|---|
| CN214655278U true CN214655278U (en) | 2021-11-09 |
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|---|---|---|---|
| CN202121080667.9U Expired - Fee Related CN214655278U (en) | 2021-05-19 | 2021-05-19 | Recovery device for electrolytic residual liquid of chlorine dioxide generator by electrolytic method |
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| Country | Link |
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| CN (1) | CN214655278U (en) |
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2021
- 2021-05-19 CN CN202121080667.9U patent/CN214655278U/en not_active Expired - Fee Related
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Granted publication date: 20211109 |