CN220638969U - Steel composite pipe increases interface welding set - Google Patents
Steel composite pipe increases interface welding set Download PDFInfo
- Publication number
- CN220638969U CN220638969U CN202322336142.2U CN202322336142U CN220638969U CN 220638969 U CN220638969 U CN 220638969U CN 202322336142 U CN202322336142 U CN 202322336142U CN 220638969 U CN220638969 U CN 220638969U
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- heating
- composite
- pipeline
- wall
- die
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- 239000002131 composite material Substances 0.000 title claims abstract description 118
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 33
- 239000010959 steel Substances 0.000 title claims abstract description 33
- 238000003466 welding Methods 0.000 title claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 171
- 229920003023 plastic Polymers 0.000 claims abstract description 39
- 239000004033 plastic Substances 0.000 claims abstract description 39
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 238000002844 melting Methods 0.000 claims abstract description 14
- 238000002788 crimping Methods 0.000 claims abstract description 4
- 150000001875 compounds Chemical class 0.000 claims description 11
- 238000001746 injection moulding Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000012943 hotmelt Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The application relates to a welding device for a steel composite pipe joint, which belongs to the technical field of composite pipe processing and comprises an inner heating die arranged in a composite pipe and an outer heating die arranged outside the composite pipe, wherein an injection cavity is reserved between the inner heating die and the inner wall of a hole of the composite pipe, and the inner heating die is used for heating and hot-melting a plastic layer at the hole of the composite pipe; the external heating die is in crimping connection with the outer wall of the composite pipeline and is opposite to the internal heating die, the opening of the injection cavity is closed by the external heating die, and the external heating die is used for heating and hot-melting plastic around the opening of the composite pipeline. The steel skeleton is isolated from the conveying medium.
Description
Technical Field
The application relates to the technical field of composite pipeline processing, in particular to a welding device for a joint of a steel composite pipe.
Background
The porous net steel skeleton polyethylene composite pipe is a novel pipeline material which is newly developed in China, successfully solves the loss caused by pipeline corrosion every year, and belongs to a green energy receiving pipeline. The composite pipe is formed by compounding steel belts and plastics, so that the composite pipe has the common advantages of steel and plastics, and the compression resistance, the stretching resistance, the corrosion resistance and the ultraviolet resistance of the composite pipe are higher than those of other pipelines, so that the composite pipe can be used in various engineering fields, and the composite pipe can exert different performance advantages according to different environments. In the copper electrolysis production field, the composite steel pipe is used as a main pipeline for conveying electrolyte, and a connecting pipe is added on the composite steel pipe, and the connecting pipe is used as a branch pipe for conveying the electrolyte to a required place.
In practical application, the steel-plastic composite pipeline can meet the condition of opening 1 or more bypass interfaces (also called increasing interfaces) on the pipeline. However, the steel-plastic composite pipe is provided with the reinforced steel skeleton layer in the middle, so that the steel skeleton layer is exposed after the holes are formed and is easy to contact with a conveying medium, and pollution to the conveying medium or corrosion failure of the pipeline due to the medium is caused.
Disclosure of Invention
In order to be convenient for separate steel skeleton and conveying medium, this application provides a steel composite pipe increases interface welding set.
The application provides a steel composite pipe increases interface welding set adopts following technical scheme:
the welding device comprises an inner heating die arranged in the composite pipeline and an outer heating die arranged outside the composite pipeline, wherein an injection cavity is reserved between the inner heating die and the inner wall of the opening of the composite pipeline, and the inner heating die is used for heating and hot-melting a plastic layer at the opening of the composite pipeline; the external heating die is in crimping connection with the outer wall of the composite pipeline and is opposite to the internal heating die, the opening of the injection cavity is closed by the external heating die, and the external heating die is used for heating and hot-melting plastic around the opening of the composite pipeline.
Optionally, a blending groove is reserved between the inner heating die and the inner wall of the composite pipeline, and the blending groove is communicated with the injection molding cavity.
Optionally, the internal heating mould includes fixing base, heater and heating mould, the heater is located the fixing base, heating mould sets up on the fixing base, heating mould's lower half is located in the compound pipeline and the inner wall of butt at the compound pipeline, heating mould's upper half is located in the opening of compound pipeline and extends the opening of compound pipeline, the chamber of moulding plastics is located between heating mould upper half and the compound pipeline trompil inner wall, the internal heating mould still includes coupling nut, coupling nut passes fixing base, heater and heating mould, threaded connection has the thread bush on the coupling nut, the thread bush butt is on the fixing base diapire.
Optionally, the extra hot mould includes the tubular product heating mould and sets up the heater in the tubular product heating mould, the heating end of tubular product heating mould is the arc and laminating at the composite pipe outer wall, the upper half that the heating mould extended the composite pipe is arranged in the holding tank of tubular product heating mould, and the butt is on tubular product heating mould holding tank lateral wall, the cavity of moulding plastics is located between composite pipe trompil inner wall, heating mould and the tubular product heating mould.
Optionally, the welding set still includes the guide bar, coupling nut cavity and both ends opening set up, the guide bar wears to establish in coupling nut, the axle center department of compound pipeline trompil department is arranged in to the guide bar and the butt is at compound pipeline inner wall, and the welding set still includes the mounting, the mounting is used for fixed internal heating mould to support tight compound pipeline inner wall department.
Optionally, the mounting includes the screw thread section that sets up on the guide bar and sets up the screw thread groove at coupling nut inner chamber, screw thread section threaded connection is on the screw thread groove.
Optionally, the balancing weight is arranged on the guide rod in a coaxial sliding way, and the balancing weight is used for being pressed on the heating die in a pressing way so that the heating end of the heating die is pressed on the outer wall of the composite pipeline.
Optionally, the increase pipe cup joints on the balancing weight, balancing weight interference fit is in the increase pipe, and the increase pipe is located between balancing weight and the additional heating mould and connecting portion butt is on the additional heating mould.
Optionally, the surface of the heating mold for heating the heating pipe is an arc surface and is adapted to the connecting end surface of the heating pipe.
Optionally, handrails are arranged on two sides of the heating mold.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the inner heating die is moved into the composite pipeline, the position of the inner heating die is adjusted, the inner heating die is abutted against the inner wall of the composite pipeline, then the inner heating die heats the inner wall of the composite pipeline, the plastic layer of the inner wall at the opening is heated and fused, then the hot-fused connecting plastic is injected into the injection cavity, the injection cavity is filled with the connecting plastic, then the outer wall of the composite pipeline is heated through the external heating die, the reinforcing pipe is abutted against the outer wall of the composite pipeline, and after the outer wall of the composite pipeline after being fused is cooled, the reinforcing pipe is welded on the composite pipeline, so that the operation is simple and convenient; after the injected connecting plastic is cooled, the exposed steel skeleton is covered in the connecting plastic, so that the conveying medium and the steel skeleton are separated, and the possibility of corrosion of the steel skeleton due to the conveying medium is reduced.
Drawings
FIG. 1 is a schematic structural view of a composite pipe in an embodiment of the present application;
FIG. 2 is a schematic diagram of the overall structure of a welding device for a steel composite pipe joint according to an embodiment of the present application;
fig. 3 is an enlarged schematic view of the portion a in fig. 2.
Reference numerals illustrate: 1. a composite pipe; 2. a connecting pipe is added;
3. internal heating mold; 31. a fixing seat; 32. a heater; 33. heating the mold; 34. a coupling nut; 35. a thread sleeve;
4. heating the mold; 41. heating the pipe; 42. a heater; 43. a connection hole; 44. a fixing bolt; 45. a fixing nut;
5. an injection cavity; 6. a blending tank; 7. a guide rod; 8. a threaded section; 9. a thread groove; 10. balancing weight; 11. an armrest.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
The embodiment of the application discloses a welding device for a joint of a steel composite pipe. Referring to fig. 1 and 2, the welding device for the steel composite pipe joint comprises an internal heating die 3 arranged in a composite pipe 1 and an external heating die 4 arranged outside the composite pipe 1, wherein an injection cavity 5 is reserved between the internal heating die 3 and the inner wall of an opening of the composite pipe 1, the injection cavity 5 is used for introducing hot-melt connecting plastics, the hot-melt connecting plastics are uniformly smeared in the injection cavity 5, after the hot-melt connecting plastics are cooled, the connecting plastics are covered on the inner wall of the injection cavity 5 and cover a steel skeleton, and the internal heating die 3 is used for heating and hot-melting a plastic layer at the opening of the composite pipe 1; the external heating die 4 is in pressure connection with the outer wall of the composite pipeline 1 and is opposite to the internal heating die 3, the opening of the injection cavity 5 of the external heating die 4 is closed, and the external heating die 4 is used for heating and hot-melting plastic around the opening of the composite pipeline 1.
When the connecting pipe 2 is connected, the inner heating die 3 is moved into the composite pipeline 1, the position of the inner heating die 3 is adjusted, the inner heating die 3 is abutted against the inner wall of the composite pipeline 1, then the inner heating die 3 heats the inner wall of the composite pipeline 1, the plastic layer of the inner wall at the opening is heated and fused, then the fused connecting plastic is injected into the injection cavity 5, the injection cavity 5 is filled with the connecting plastic, then the outer wall of the composite pipeline 1 is heated through the externally heating die 4, the connecting pipe 2 is abutted against the outer wall of the composite pipeline 1, after the outer wall of the composite pipeline 1 after being fused is cooled, the connecting pipe 2 is welded on the composite pipeline 1, and the operation is simple and convenient.
Referring to fig. 2 and 3, in the embodiment of the present application, in order to improve the stability of the cooled connection plastic on the composite pipe 1, a melting groove 6 is left between the inner heating die 3 and the inner wall of the composite pipe 1, the melting groove 6 is opened at the heating end surface of the inner heating die 3, the melting groove 6 is communicated with the injection molding cavity 5, and further, the melting groove 6 is a stepped groove; after the hot-melt connecting plastic is injected into the injection molding cavity 5, the connecting plastic flows into the mixing groove 6, and after the connecting plastic is cooled, the connecting plastic is buckled on the bottom and the side wall of the opening of the composite pipeline 1, so that the stability of the connecting plastic is improved.
Referring to fig. 2, in the embodiment of the present application, the inner heating die 3 includes a fixing seat 31, a heater 32 and a heating die 33, the heater 32 is located in the fixing seat 31, the fixing seat 31 is provided with an accommodating groove for accommodating the heater 32, the heating die 33 is arranged on the fixing seat 31, the lower half part of the heating die 33 is located in the composite pipe 1 and is abutted against the inner wall of the composite pipe 1, the upper half part of the heating die 33 is located in the opening of the composite pipe 1 and extends out of the opening of the composite pipe 1, the injection molding cavity 5 is located between the upper half part of the heating die 33 and the inner wall of the opening of the composite pipe 1, the inner heating die 3 further includes a connecting nut 34, the connecting nut 34 passes through the fixing seat 31, the heater 32 and the heating die 33, the end part of the connecting nut 34 is pressed against the heating die 33, a threaded sleeve 35 is connected on the connecting nut 34 in a threaded manner, and the threaded sleeve 35 is abutted against the bottom wall of the fixing seat 31; the connecting nut 34 passes through the fixing seat 31, the heater 32 and the heating die 33, the threaded sleeve 35 is in threaded connection with the connecting nut 34, the threaded sleeve 35 is rotated again, the threaded sleeve 35 is abutted against the bottom wall of the fixing seat 31, the assembly of the internal heating die 3 is completed, then the heater 32 is connected with the mains supply, heat generated by the heater 32 is conducted to the heating die 33, and the inner wall of the composite pipeline 1 is heated, so that the operation is simple and convenient.
Referring to fig. 2, in the embodiment of the application, the heating mold 4 includes a pipe heating mold 41 and a heater 42 disposed in the pipe heating mold 41, further, connecting holes 43 are formed in the pipe heating mold 41 and the heater 42, the pipe heating mold 41 and the heater 42 are connected through fixing bolts 44 disposed in the connecting holes 43, fixing nuts 45 are screwed on the fixing bolts 44, the pipe heating mold 41 and the heater 42 are fixedly connected by the fixing bolts 44 and the fixing nuts 45, the heating end of the pipe heating mold 41 is arc-shaped and is attached to the outer wall of the composite pipe 1, the upper half part of the heating mold 33 extending out of the composite pipe 1 is disposed in a containing groove of the pipe heating mold 41 and is abutted to the side wall of the containing groove of the pipe heating mold 41, and the injection molding cavity 5 is located between the inner wall of the opening of the composite pipe 1 and the heating mold 33 and the pipe heating mold 41; the external heating die 4 is arranged on the outer wall of the composite pipeline 1, heat generated by the heater 42 is transferred to the pipe heating die 41, and the pipe heating die 41 heats the outer wall of the composite pipeline 1, so that the operation is simple and convenient.
Referring to fig. 2, the welding device further comprises a guide rod 7, wherein the connecting nut 34 is hollow, two ends of the guide rod are provided with openings, the fixing bolt 44 is hollow, two ends of the guide rod are provided with openings, the guide rod 7 is arranged in the connecting nut 34 and the fixing bolt 44 in a penetrating manner, the guide rod 7 is arranged at the axle center of the hole of the composite pipeline 1 and is abutted against the inner wall of the composite pipeline 1, the welding device further comprises a fixing piece, the fixing piece is used for fixing the inner heating die 3 to be abutted against the inner wall of the composite pipeline 1, the fixing piece comprises a thread section 8 arranged on the guide rod 7 and a thread groove 9 formed in the inner cavity of the connecting nut 34, and the thread section 8 is in threaded connection with the thread groove 9; after the inner heating die 3 is moved into the composite pipeline 1, the guide rod 7 is inserted into the inner heating die 3, then the guide rod 7 is rotated, the guide rod 7 rotates to drive the inner heating die 3 to move upwards and abut against the inner wall of the composite pipeline 1, and the inner heating die 3 is fixed at the position due to the self-locking property of the threaded connection, so that the inner wall of the composite pipeline 1 is heated conveniently.
Referring to fig. 2, a balancing weight 10 is coaxially and slidably arranged on the guide rod 7, and the balancing weight 10 is used for being pressed on the heating mold 4 so as to press the heating end of the heating mold 4 on the outer wall of the composite pipeline 1; after the heating die 4 is arranged on the guide rod 7 in a penetrating way, the balancing weight 10 is moved to the guide rod 7, and under the gravity action of the balancing weight 10, the heating die 4 is tightly attached to the outer wall of the composite pipeline 1, so that the effect of the heating die 4 on the composite pipeline 1 is improved.
Referring to fig. 2, the extension pipe 2 is sleeved on the balancing weight 10, the balancing weight 10 is in interference fit in the extension pipe 2, the extension pipe 2 is a plastic pipe and has certain elasticity, the extension pipe 2 is positioned between the balancing weight 10 and the externally heating mold 4, the connecting part is abutted on the externally heating mold 4, and the surface of the externally heating mold 4 for heating the extension pipe 2 is a cambered surface and is matched with the connecting end surface of the extension pipe 2; when the heating mold 4 heats the composite pipeline 1, the heating mold 4 heats the connecting end of the connecting pipe 2 so as to facilitate the connecting operation of the connecting pipe 2.
Referring to fig. 2, in order to facilitate the installation and removal of the heating mold 4, both sides of the heating mold 4 are provided with handrails 11.
The implementation principle of the welding device for the steel composite pipe joint is as follows:
when the connecting pipe 2 is welded, firstly, the inner heating die 3 is sent to the position of the opening from the inside of the composite pipeline 1, the guide rod 7 is inserted and rotated, so that the inner heating die 3 is aligned with the opening and clings to the inner wall of the composite pipeline 1, and the inner heating die 3 is electrified to heat and heat the inner wall plastic at the position of the opening;
then a hand-held hot air gun is used for blowing hot air to the gap between the composite pipeline 1 and the internal heating mould 3 (the injection cavity 5) so as to heat and melt the surface plastic at the position of the opening;
a hand-held plastic extrusion welding gun is used for aligning the gap between the composite pipeline 1 and the internal heating mould 3 (injection molding cavity 5), and the molten connecting plastic is uniformly extruded and filled up;
then inserting the heating mold 4 and the extension pipe 2 into the guide rod 7, attaching the heating mold 4 to the surface of the composite pipeline 1, and crimping the balancing weight 10 on the extension pipe 2;
after the composite pipeline 1 and the extension pipe 2 are heated to meet the welding temperature, the balancing weight 10, the extension pipe 2 and the heating mold 4 are sequentially taken out, the extension pipe 2 and the balancing weight 10 are inserted into the guide rod 7 together, the hot melting arc surface of the extension pipe 2 is connected with the hot melting arc surface of the composite pipeline 1, and after the butt joint part is cooled, the clamp can be dismantled to finish welding.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. The utility model provides a steel composite pipe increases interface welding set which characterized in that: the plastic injection molding device comprises an inner heating die (3) arranged in a composite pipeline (1) and an outer heating die (4) arranged outside the composite pipeline (1), wherein an injection molding cavity (5) is reserved between the inner heating die (3) and the inner wall of an opening of the composite pipeline (1), and the inner heating die (3) is used for heating and thermally melting a plastic layer at the opening of the composite pipeline (1); the hot-air heating device is characterized in that the hot-air heating die (4) is in crimping connection with the outer wall of the composite pipeline (1) and is opposite to the inner heating die (3), an opening of the injection cavity (5) by the hot-air heating die (4) is closed, and the hot-air heating die (4) is used for heating and hot-melting plastic around an opening of the composite pipeline (1).
2. The steel composite pipe joint-increasing welding device according to claim 1, wherein: and a blending groove (6) is reserved between the inner heating die (3) and the inner wall of the composite pipeline (1), and the blending groove (6) is communicated with the injection molding cavity (5).
3. The steel composite pipe joint-increasing welding device according to claim 1, wherein: the inner heating die (3) comprises a fixed seat (31), a heater (32) and a heating die (33), wherein the heater (32) is located in the fixed seat (31), the heating die (33) is arranged on the fixed seat (31), the lower half part of the heating die (33) is located in the composite pipeline (1) and is abutted to the inner wall of the composite pipeline (1), the upper half part of the heating die (33) is located in an opening of the composite pipeline (1) and extends out of the opening of the composite pipeline (1), the injection molding cavity (5) is located between the upper half part of the heating die (33) and the perforated inner wall of the composite pipeline (1), the inner heating die (3) further comprises a connecting nut (34), the connecting nut (34) penetrates through the fixed seat (31), the heater (32) and the heating die (33), a threaded sleeve (35) is connected to the connecting nut (34) in a threaded mode, and the threaded sleeve (35) is abutted to the bottom wall of the fixed seat (31).
4. A steel composite pipe joint-added welding device according to claim 3, wherein: the utility model provides an add hot mould (4) including tubular product heating mould (41) and heater (42) of setting in tubular product heating mould (41), the heating end of tubular product heating mould (41) is the arc and laminating at compound pipeline (1) outer wall, the holding tank of tubular product heating mould (41) is arranged in to the upper half that adds hot mould (33) extension compound pipeline (1), and the butt is on tubular product heating mould (41) holding tank lateral wall, mould plastics chamber (5) and be located between compound pipeline (1) trompil inner wall, heating mould (33) and tubular product heating mould (41).
5. A steel composite pipe joint-added welding device according to claim 3, wherein: the welding device further comprises a guide rod (7), the connecting nut (34) is hollow, openings are formed in the two ends of the connecting nut, the guide rod (7) is arranged in the connecting nut (34) in a penetrating mode, the guide rod (7) is arranged at the axis of the opening of the composite pipeline (1) and abuts against the inner wall of the composite pipeline (1), and the welding device further comprises a fixing piece used for fixing the inner heating die (3) to abut against the inner wall of the composite pipeline (1).
6. The steel composite pipe joint-increasing welding device according to claim 5, wherein: the fixing piece comprises a thread section (8) arranged on the guide rod (7) and a thread groove (9) formed in the inner cavity of the connecting nut (34), and the thread section (8) is in threaded connection with the thread groove (9).
7. The steel composite pipe joint-increasing welding device according to claim 5, wherein: the guide rod (7) is coaxially and slidably provided with a balancing weight (10), and the balancing weight (10) is used for being pressed on the heating mold (4) in a pressing mode so that the heating end of the heating mold (4) is pressed on the outer wall of the composite pipeline (1).
8. The steel composite pipe joint-increasing welding device according to claim 7, wherein: the heating pipe (2) is sleeved on the balancing weight (10), the balancing weight (10) is in interference fit with the inside of the heating pipe (2), the heating pipe (2) is located between the balancing weight (10) and the heating mold (4) and the connecting part is abutted to the heating mold (4).
9. The steel composite pipe joint-increasing welding device according to claim 8, wherein: the surface of the heating mold (4) for heating the increasing pipe (2) is an arc surface and is matched with the connecting end surface of the increasing pipe (2).
10. The steel composite pipe joint-increasing welding device according to claim 1, wherein: two sides of the heating mold (4) are provided with armrests (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322336142.2U CN220638969U (en) | 2023-08-29 | 2023-08-29 | Steel composite pipe increases interface welding set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322336142.2U CN220638969U (en) | 2023-08-29 | 2023-08-29 | Steel composite pipe increases interface welding set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220638969U true CN220638969U (en) | 2024-03-22 |
Family
ID=90263383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322336142.2U Active CN220638969U (en) | 2023-08-29 | 2023-08-29 | Steel composite pipe increases interface welding set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220638969U (en) |
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2023
- 2023-08-29 CN CN202322336142.2U patent/CN220638969U/en active Active
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