CN221191934U - Waste water recycling device for phthalocyanine blue production - Google Patents
Waste water recycling device for phthalocyanine blue production Download PDFInfo
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- CN221191934U CN221191934U CN202323028198.8U CN202323028198U CN221191934U CN 221191934 U CN221191934 U CN 221191934U CN 202323028198 U CN202323028198 U CN 202323028198U CN 221191934 U CN221191934 U CN 221191934U
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- tank
- waste water
- pipe
- side wall
- liquid
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- 239000002351 wastewater Substances 0.000 title claims abstract description 64
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000004064 recycling Methods 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 92
- 230000007246 mechanism Effects 0.000 claims abstract description 59
- 238000002347 injection Methods 0.000 claims abstract description 36
- 239000007924 injection Substances 0.000 claims abstract description 36
- 238000005189 flocculation Methods 0.000 claims abstract description 35
- 230000016615 flocculation Effects 0.000 claims abstract description 35
- 238000004062 sedimentation Methods 0.000 claims abstract description 24
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 239000010865 sewage Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000004744 fabric Substances 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 10
- 239000010802 sludge Substances 0.000 claims description 8
- 239000002893 slag Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 abstract description 20
- 239000002894 chemical waste Substances 0.000 abstract 1
- 239000002585 base Substances 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- 210000001503 joint Anatomy 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 1
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 description 1
- 229940010552 ammonium molybdate Drugs 0.000 description 1
- 235000018660 ammonium molybdate Nutrition 0.000 description 1
- 239000011609 ammonium molybdate Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 229940045803 cuprous chloride Drugs 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 230000000485 pigmenting effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model discloses a waste water recycling device for phthalocyanine blue production, which relates to the technical field of chemical waste water and adopts the following scheme: the device comprises a flocculation tank, wherein a first liquid distribution tank is fixedly arranged on the upper surface of the flocculation tank, first liquid injection mechanisms are arranged on the left side surface and the right side surface of the first liquid distribution tank, a first stirring mechanism is arranged on the first liquid distribution tank, a first guide pipe is fixedly arranged at the upper side position of the right side wall of the flocculation tank, the first guide pipe is communicated with a sedimentation tank, a filter core is obliquely arranged between the upper inner wall and the lower inner wall of the sedimentation tank, a sewage draining mechanism is arranged on the lower surface of the flocculation tank and the lower surface of a sedimentation pipe, a second guide pipe is arranged at the upper side position of the right side wall of the sedimentation tank, and the second guide pipe is communicated with the lower side position of the left side wall of the mixing tank.
Description
Technical Field
The utility model relates to the technical field of chemical wastewater, in particular to a wastewater recycling device for phthalocyanine blue production.
Background
Phthalocyanine blue is a kind of high-grade organic pigment and is widely used in the industries of printing ink, paint, plastic, color paste and the like. The product has good stability, bright color, good dispersion and heat resistance, and high tinting strength. The phthalocyanine blue is produced by adopting a roasting method production process, using phthalic anhydride, urea, cuprous chloride and the like as raw materials and ammonium molybdate as a catalyst, and carrying out the steps of raw material reaction synthesis, crude product purification, grinding, refining, pigmenting, press filtration drying and the like; the filtrate and flushing water produced in the purification process of crude copper phthalocyanine are waste water.
In the prior art, waste water generated in the phthalocyanine purification process contains a large amount of waste residues and organic matters, the waste water is directly discharged back to cause waste of resources, the environment is polluted, the waste water is purified and filtered in a traditional precipitation mode, a large amount of time is required, the purification is not thorough, and the waste water is difficult to recycle.
Disclosure of utility model
The utility model provides a waste water recycling device for phthalocyanine blue production, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a waste water recycling device of phthalocyanine blue production, includes the flocculation tank, the upper surface fixed mounting of flocculation tank has first cloth liquid case, the left and right sides face of first cloth liquid case all is provided with first notes liquid mechanism, install first rabbling mechanism on the first cloth liquid case, and first rabbling mechanism inserts and locate in the flocculation tank, flocculation tank right side wall upside position fixed mounting has first pipe, first pipe is linked together with the sedimentation tank, the slope is provided with the filter core between the upper and lower inner wall of sedimentation tank, flocculation tank and sedimentation tube lower surface are provided with blowdown mechanism, the second pipe is installed to the right side wall upside position of sedimentation tank, the second pipe is linked together with the left side wall downside position of blending tank, the upper surface fixed mounting of blending tank has the second cloth liquid case, the left and right sides face of second cloth liquid case all is provided with second notes liquid mechanism, install the second rabbling mechanism on the second cloth liquid case, the second rabbling mechanism inserts and locates in the blending tank, the right side wall position is provided with the PH meter on the blending tank, the outlet pipe position is installed to the right side wall.
Further, the first liquid injection mechanism comprises a liquid injection pipe, a flow control valve and a one-way check valve, the liquid injection pipe is arranged on the first liquid distribution box, the flow control valve and the one-way check valve are sequentially arranged on the liquid injection pipe, and the second liquid injection mechanism is identical to the first liquid injection mechanism in structure.
Further, first rabbling mechanism includes motor, transmission pipe, feed liquor hole, agitator tube and play liquid hole, motor fixed mounting is in first cloth liquid case upper surface, fixed surface installs the transmission pipe under the motor output shaft, and the transmission pipe inserts and locate in the flocculation tank, the feed liquor hole has been seted up to being located first cloth liquid incasement on the transmission pipe, the side evenly is provided with the agitator tube about the transmission pipe, and has seted up out the liquid hole on the downside three-layer agitator tube, second rabbling mechanism is the same with first rabbling mechanism structure.
Further, mechanical sealing elements are arranged at positions corresponding to the upper side wall and the lower side wall of the first liquid distribution box of the driving tube.
Further, the sewage draining mechanism comprises a sewage draining pipe, an electromagnetic valve and a sludge pump, wherein the sewage draining pipe is arranged on the lower surfaces of the flocculation tank and the sedimentation tank, the electromagnetic valve is arranged on the sewage draining pipe corresponding to the sedimentation tank, and the sewage draining pipe is communicated with an inlet of the sludge pump.
Further, a slag discharging valve is arranged at the lower side of the right side wall of the mixing tank.
Compared with the prior art, the utility model provides a waste water recycling device for phthalocyanine blue production, which has the following beneficial effects:
1. This waste water recycle device of phthalocyanine blue production adds waste water and flocculating agent into the flocculation jar through setting up first notes liquid mechanism and first rabbling mechanism, both can the quick mixing to can make waste water flocculation fast, the precipitation of impurity and organic matter in the rethread sedimentation tank acceleration waste water, the filter core is effectual purifies waste water, second notes liquid mechanism makes alkali meter and weak base waste water injection, can adjust waste water PH value fast, makes waste water recycle, reduces use cost, environmental pollution.
2. This waste water recycling device of phthalocyanine blue production through setting up the blowdown mechanism can be fast with the impurity discharge of filtering out, does benefit to and uses this waste water recycling device, improves availability factor.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a cross-sectional view of the present utility model;
fig. 3 is a cross-sectional view of a first cloth box according to the present utility model.
In the figure: 1. a flocculation tank; 2. a first liquid distribution box; 3. a first liquid injection mechanism; 301. a liquid injection pipe; 302. a flow control valve; 303. a one-way check valve; 4. a first stirring mechanism; 401. a motor; 402. a transmission tube; 403. a liquid inlet hole; 404. a stirring tube; 405. a liquid outlet hole; 5. a first conduit; 6. a precipitation tank; 7. a filter element; 8. a sewage disposal mechanism; 801. a blow-down pipe; 802. an electromagnetic valve; 803. a sludge pump; 9. a second conduit; 10. a mixing tank; 11. a second liquid distribution box; 12. a second liquid injection mechanism; 13. a second stirring mechanism; 14. a PH meter; 15. a water outlet pipe; 16. a mechanical seal; 17. and a slag discharging valve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, the utility model discloses a waste water recycling device for phthalocyanine blue production, which comprises a flocculation tank 1, wherein a first liquid distribution tank 2 is fixedly arranged on the upper surface of the flocculation tank 1, a first liquid injection mechanism 3 is arranged on the upper side and the lower side of the right side of the first liquid distribution tank 2, a first stirring mechanism 4 is arranged on the first liquid distribution tank 2, the first stirring mechanism 4 is inserted into the flocculation tank 1, a first guide pipe 5 is fixedly arranged on the upper side of the right side wall of the flocculation tank 1, the first guide pipe 5 is communicated with a sedimentation tank 6, a filter element 7 is obliquely arranged between the upper and lower inner walls of the sedimentation tank 6, a sewage draining mechanism 8 is arranged on the lower surface of the flocculation tank 1 and the sedimentation tank, a second guide pipe 9 is arranged on the upper side of the right side wall of the sedimentation tank 6, a second liquid distribution tank 11 is fixedly arranged on the upper surface of the mixing tank 10, a second liquid distribution mechanism 12 is arranged on the left side and the right side of the mixing tank 11, a second liquid injection mechanism 12 is arranged on the upper side of the second liquid distribution tank 11, a second stirring mechanism 13 is arranged on the mixing tank 10, and a water outlet pipe 13 is arranged on the upper side of the mixing tank 10.
Specifically, the first liquid injection mechanism 3 includes a liquid injection pipe 301, a flow control valve 302 and a one-way check valve 303, the liquid injection pipe 301 is installed on the first liquid distribution box 2, the liquid injection pipe 301 is sequentially installed with the flow control valve 302 and the one-way check valve 303, and the second liquid injection mechanism 12 has the same structure as the first liquid injection mechanism 3.
In this embodiment, the liquid injection pipes 301 in the left and right first liquid injection mechanisms 3 are in butt joint with corresponding waste water pipes and flocculant pipes, the dosages of the waste water and flocculant pipes are controlled through the flow control valve 302, the one-way check valve 303 prevents the waste water and flocculant from flowing back into the first liquid distribution box 2 through the liquid injection pipes 301, and the second liquid injection mechanism 12 is in butt joint with alkaline agent and weak base waste water respectively, so that the alkaline agent and weak base waste water flow into the second liquid distribution box 11.
Specifically, the first stirring mechanism 4 includes motor 401, transfer line 402, feed liquor hole 403, stirring pipe 404 and play liquid hole 405, motor 401 fixed mounting is in first cloth liquid case 2 upper surface, motor 401 output shaft lower surface fixed mounting has transfer line 402, and in the flocculation tank was inserted to transfer line 402, the feed liquor hole 403 has been seted up to being located in the first cloth liquid case 2 on the transfer line 402, the side evenly is provided with stirring pipe 404 about the transfer line 402, and has seted up out liquid hole 405 on the three-layer stirring pipe 404 of downside, the second stirring mechanism 13 is the same with the structure of first stirring mechanism 4.
In this embodiment, the wastewater and the flocculant in the first liquid distribution tank 2 flow into the driving pipe 402 through the liquid inlet 403, then flow into the flocculation tank 1 through the liquid outlet 405 on the stirring pipe 404, and then the motor 401 drives the driving pipe 402 to rotate, and the driving pipe 402 drives the stirring pipe 404 to rotate, so as to stir the wastewater and the flocculant in the flocculation tank 1, so that the wastewater and the flocculant are quickly mixed, and the wastewater, the alkaline agent and the weak base wastewater are mixed after being purified in the mixing tank 10 by the second stirring mechanism 13.
Specifically, mechanical sealing elements 16 are disposed at positions corresponding to the upper and lower side walls of the first liquid distribution tank 2 in the transmission pipe 402.
In this embodiment, the mechanical seal 16 provides better sealing between the drive tube 402 and the upper and lower sidewalls of the first cloth casing 2.
Specifically, the sewage draining mechanism 8 comprises a sewage draining pipe 801, an electromagnetic valve 802 and a sludge pump 803, the sewage draining pipe 801 is arranged on the lower surfaces of the flocculation tank 1 and the sedimentation tank 6, the electromagnetic valve 802 is arranged on the sewage draining pipe 801 corresponding to the sedimentation tank 6, and the sewage draining pipe 801 is communicated with an inlet of the sludge pump 803.
In this embodiment, solenoid valve 802 is opened to allow sludge pump 803 to drain impurities from flocculation tank 1 and sedimentation tank 6 through drain pipe 801.
Specifically, a slag discharging valve 17 is installed at the lower side of the right side wall of the mixing tank 10.
In this embodiment, the slag discharge valve 17 facilitates the discharge of a small amount of impurities precipitated in the mixing tank 10.
When in use, the liquid injection pipes 301 in the left and right first liquid injection mechanisms 3 in the first liquid injection mechanism 3 are in butt joint with corresponding waste water pipes and flocculant pipes, the dosages of the waste water and the flocculant are controlled through the flow control valve 302, the one-way check valve 303 prevents the waste water and the flocculant from flowing back, the waste water and the flocculant flow into the first liquid distribution box 2 through the liquid injection pipes 301, the waste water and the flocculant in the first liquid distribution box 2 flow into the transmission pipe 402 through the liquid inlet 403 in the first stirring mechanism 4, then flow into the flocculation tank 1 through the liquid outlet 405 on the stirring pipe 404, the transmission pipe 402 is driven to rotate through the motor 401, so that the waste water and the flocculant in the flocculation tank 1 are stirred, the waste water and the flocculant are quickly mixed, the waste water can be flocculated quickly, waste water flows into the precipitation tank 6 through the first guide pipe 5, impurities and organic matters in the waste water are precipitated through the precipitation tank 6, the filter element 7 is used for effectively purifying the waste water, the purified waste water flows into the mixing tank 10 through the second guide pipe 9, the PH meter 14 on the mixing tank 10 is used for detecting the PH value of the waste water, the injection amount of the second liquid injection mechanism 12 is adjusted according to the checking structure, the second liquid injection mechanism 12 is respectively in butt joint with alkaline agent and weak base waste water, the alkaline agent and weak base waste water flow into the second liquid distribution tank 11, the dosage is accurate, the purified waste water, the alkaline agent and the weak base waste water in the mixing tank 10 are mixed through the second stirring mechanism 13, the PH value of the waste water can be quickly adjusted, the waste water can be recycled, the use cost is reduced, and the environmental pollution is reduced.
To sum up, this waste water recycle device of phthalocyanine blue production can make waste water flocculation fast, accelerates the precipitation of impurity and organic matter, effectually purifies waste water to adjust waste water PH value fast, make waste water recycle, reduce use cost, reduce environmental pollution.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a waste water recycle device of phthalocyanine blue production, includes flocculation tank (1), its characterized in that: the upper surface fixed mounting of flocculation tank (1) has first cloth liquid case (2), the left and right sides face of first cloth liquid case (2) all is provided with first notes liquid mechanism (3), install first rabbling mechanism (4) on first cloth liquid case (2), and first rabbling mechanism (4) are inserted and are located in flocculation tank (1), flocculation tank (1) right side wall upside position fixed mounting has first pipe (5), first pipe (5) are linked together with sedimentation tank (6), slope is provided with filter core (7) between the upper and lower inner wall of sedimentation tank (6), flocculation tank (1) and sedimentation tube lower surface are provided with blowdown mechanism (8), the right side wall upside position of sedimentation tank (6) is installed second pipe (9), the upper surface fixed mounting of mixing tank (10) has second cloth liquid case (11), second cloth liquid case (11) are provided with second side wall upside position (13) and are located second side wall upside position (13) of mixing tank (10), second cloth liquid case (11) are provided with second side wall upside position (13), and a water outlet pipe (15) is arranged at the upper side of the right side wall of the mixing tank (10).
2. The waste water recycling device for phthalocyanine blue production according to claim 1, wherein: the first liquid injection mechanism (3) comprises a liquid injection pipe (301), a flow control valve (302) and a one-way check valve (303), the liquid injection pipe (301) is arranged on the first liquid distribution box (2), the flow control valve (302) and the one-way check valve (303) are sequentially arranged on the liquid injection pipe (301), and the second liquid injection mechanism (12) and the first liquid injection mechanism (3) are identical in structure.
3. The waste water recycling device for phthalocyanine blue production according to claim 1, wherein: the utility model provides a flocculation tank, including motor (401), transfer line (402), feed liquor hole (403), churn (404) and play liquid hole (405), motor (401) fixed mounting is in first cloth liquid case (2) upper surface, fixed surface installs transfer line (402) under motor (401) output shaft, and inserts in the flocculation tank transfer line (402), feed liquor hole (403) have been seted up to transfer line (402) on being located first cloth liquid case (2), the left and right sides face of transfer line (402) evenly is provided with churn (404), and has seted up out liquid hole (405) on downside three-layer churn (404), second rabbling mechanism (13) are the same with first rabbling mechanism (4) structure.
4. A waste water recycling device for phthalocyanine blue production according to claim 3, wherein: and mechanical sealing elements (16) are arranged at positions of the transmission pipe (402) corresponding to the upper side wall and the lower side wall of the first liquid distribution box (2).
5. The waste water recycling device for phthalocyanine blue production according to claim 1, wherein: the sewage draining mechanism (8) comprises a sewage draining pipe (801), an electromagnetic valve (802) and a sludge pump (803), wherein the sewage draining pipe (801) is arranged on the lower surfaces of the flocculation tank (1) and the sedimentation tank (6), the electromagnetic valve (802) is arranged on the sewage draining pipe (801) corresponding to the sedimentation tank (6), and the sewage draining pipe (801) is communicated with the inlet of the sludge pump (803).
6. The waste water recycling device for phthalocyanine blue production according to claim 1, wherein: a slag discharging valve (17) is arranged at the lower side of the right side wall of the mixing tank (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323028198.8U CN221191934U (en) | 2023-11-09 | 2023-11-09 | Waste water recycling device for phthalocyanine blue production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323028198.8U CN221191934U (en) | 2023-11-09 | 2023-11-09 | Waste water recycling device for phthalocyanine blue production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221191934U true CN221191934U (en) | 2024-06-21 |
Family
ID=91493199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323028198.8U Active CN221191934U (en) | 2023-11-09 | 2023-11-09 | Waste water recycling device for phthalocyanine blue production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221191934U (en) |
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2023
- 2023-11-09 CN CN202323028198.8U patent/CN221191934U/en active Active
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