CN216955020U - Leak hunting device of coupling - Google Patents
Leak hunting device of coupling Download PDFInfo
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- CN216955020U CN216955020U CN202123407696.4U CN202123407696U CN216955020U CN 216955020 U CN216955020 U CN 216955020U CN 202123407696 U CN202123407696 U CN 202123407696U CN 216955020 U CN216955020 U CN 216955020U
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- clamping
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- limiting assembly
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Abstract
The utility model provides a leakage detection device of a pipe joint, which comprises a water tank, a lifting platform and a plurality of leakage detection devices, wherein the notch of the water tank is upward and horizontally placed; the leakage detection devices are arranged on the lifting platform and comprise a first clamping mechanism, a second clamping mechanism, a third clamping mechanism and a supporting and limiting assembly; the axial extension direction of the first clamping mechanism is collinear with the axial extension direction of the second clamping mechanism; the supporting and limiting assembly is positioned between the first clamping mechanism and the second clamping mechanism; the axial extension direction of the third clamping mechanism is vertical to the axial extension direction of the first clamping mechanism; the first clamping mechanism is provided with an air filling channel, the output end of the first clamping mechanism, the output end of the second clamping mechanism or the output end of the third clamping mechanism selectively move towards the direction of the supporting and limiting assembly, and the two ends of the air filling channel are respectively communicated with the pipe joint and the air source.
Description
Technical Field
The utility model relates to the technical field of pipe joint leakage detection, in particular to a leakage detection device of a pipe joint.
Background
The pipe joint is used as a connecting piece of a pipe fitting and a pipeline, is generally used at a branch pipe of a main pipeline or for connection between branch pipelines, and generally comprises a tee joint, a straight joint or an elbow and the like; the branch pipe of the industrial PE (polyethylene) pipe joint is usually formed by welding pipe fittings, leakage may occur at the welded position due to welding temperature, uneven butt joint, etc., and leakage of the pipe joint is concentrated at the welded position. Therefore, it is highly desirable to provide a leak detection device for a pipe joint.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a leakage detection device for a pipe joint, which can perform batch leakage detection on defects such as water or air leakage of the pipe joint.
The technical scheme of the utility model is realized as follows: the utility model provides a leakage detection device of a pipe joint, which comprises a water tank, a lifting platform and a plurality of leakage detection devices, wherein the notch of the water tank is upward and is horizontally arranged,
the lifting platform is horizontally arranged above the notch of the water tank and selectively sinks into the water tank; the leakage detection devices are arranged on the lifting platform and comprise a first clamping mechanism, a second clamping mechanism, a third clamping mechanism and a supporting and limiting assembly;
the axial extension direction of the first clamping mechanism is collinear with the axial extension direction of the second clamping mechanism; the supporting and limiting assembly is positioned between the first clamping mechanism and the second clamping mechanism; the axial extension of the third clamping mechanism is vertical to the axial extension direction of the first clamping mechanism;
the first clamping mechanism is provided with an air filling channel, the output end of the first clamping mechanism, the output end of the second clamping mechanism or the output end of the third clamping mechanism selectively move towards the direction of the supporting and limiting assembly, and the two ends of the air filling channel are respectively communicated with the pipe joint and the air source.
On the basis of the technical scheme, preferably, the supporting and limiting assembly comprises a supporting platform, the supporting platform is detachably arranged on the lifting platform, and a first square groove and a second square groove are formed in the surface, far away from the lifting platform, of the supporting platform; two ends of the first square groove respectively vertically face the output end of the first clamping mechanism and the output end of the second clamping mechanism; one end of the second square groove is vertically communicated with the first square groove, and the other end of the second square groove vertically faces the output end of the third clamping mechanism.
On the basis of the above technical scheme, preferably, the supporting and limiting assembly further comprises a limiting block, and the limiting block is detachably arranged in the first square groove; the end face of the limiting block, which is far away from the second clamping mechanism, is an arc surface, and the arc surface is in smooth transition with the groove wall of the second square groove, which is close to the second clamping mechanism, and the groove wall of the first square groove, which is far away from the third clamping mechanism.
On the basis of the technical scheme, preferably, the groove width of the first square groove and the groove width of the second square groove are both matched with the diameter of the pipe joint; the groove depth of the first square groove and the groove depth of the second square groove are both larger than the radius of the pipe joint.
On the basis of the above technical scheme, preferably, the leakage detection device further comprises three sealing gaskets, and the three sealing gaskets are respectively and fixedly arranged at one end of the first clamping mechanism, which is close to the supporting limit component, one end of the second clamping mechanism, which is close to the supporting limit component, and one end of the third clamping mechanism, which is close to the supporting limit component.
On the basis of the above technical solution, preferably, the first clamping mechanism includes a first clamping cylinder and a first clamping portion, wherein,
the first clamping part is positioned between the first clamping cylinder and the supporting and limiting assembly, and the first clamping cylinder is fixedly arranged on the lifting platform;
the first clamping cylinder is fixedly connected with the first clamping part and selectively drives the first clamping part to move towards the direction of the supporting and limiting assembly; the air-entrapping channel is fixedly arranged on the first clamping part.
On the basis of the above technical scheme, preferably, the gas filling channel comprises a gas injection hole and a gas source connecting hole, wherein,
the gas injection hole is arranged at one end of the first clamping part, which is far away from the clamping cylinder, and the orifice of the gas injection hole faces to the port of the pipe joint, which is contacted with the first clamping part;
on the first clamping part of the gas source connecting hole, the gas source connecting hole is communicated with the gas injection hole, and the orifice of the gas source connecting hole is communicated with the gas source.
On the basis of the above technical solution, preferably, the second clamping mechanism includes a second clamping cylinder and a second clamping portion, wherein,
the second clamping part is positioned between the second clamping cylinder and the supporting and limiting assembly, and the second clamping cylinder is fixedly arranged on the lifting platform;
the second clamping cylinder is fixedly connected with the second clamping part and selectively drives the second clamping part to move towards the direction of the supporting and limiting assembly.
On the basis of the above technical solution, preferably, the third clamping mechanism includes a third clamping cylinder and a third clamping portion, wherein,
the third clamping part is positioned between the third clamping cylinder and the supporting and limiting assembly, and the third clamping cylinder is fixedly arranged on the lifting platform;
and the third clamping cylinder is fixedly connected with the third clamping part and selectively drives the third clamping part to move towards the direction of the supporting and limiting assembly.
On the basis of the technical scheme, the device preferably further comprises a support and a plurality of vertical driving devices, wherein,
the bracket is horizontally placed on the ground, and the water tank and the plurality of vertical driving devices are fixedly arranged on the bracket;
the plurality of vertical driving devices are arranged at intervals and are vertically positioned above the water tank, and one end of each vertical driving device, which is close to the water tank, is vertically fixed with the lifting platform; the vertical driving device drives the lifting platform to move along the axial extension direction of the vertical driving device; the bottom of the water tank is provided with a drainage pipeline which is provided with a valve.
Compared with the prior art, the leak detection device for the pipe joint has the following beneficial effects:
(1) the leakage detection device is arranged and comprises a first clamping mechanism, a second clamping mechanism, a third clamping mechanism and a supporting and limiting assembly; the axial extension direction of the first clamping mechanism is collinear with the axial extension direction of the second clamping mechanism; the supporting and limiting assembly is positioned between the first clamping mechanism and the second clamping mechanism; the axial extension direction of the third clamping mechanism is vertical to the axial extension direction of the first clamping mechanism; the first clamping mechanism is provided with an air charging channel, the output end of the first clamping mechanism, the output end of the second clamping mechanism or the output end of the third clamping mechanism selectively move towards the direction of the supporting and limiting assembly, and the two ends of the air charging channel are respectively communicated with the pipe joint and an air source; the pipe joint is clamped and fixed in a sealing mode through the first clamping mechanism, the second clamping mechanism or the third clamping mechanism, gas is injected into the pipe joint through the gas filling channel on the first clamping mechanism, then the lifting platform and the leak detection device and the pipe joint on the lifting platform are driven through the vertical driving device to sink into water in the water tank, and the quality of the pipe joint is judged by observing the condition of the pipe joint in the water.
(2) The supporting platform is arranged, so that the straight-through can be placed in the first square groove and is sealed, clamped and fixed through the first clamping mechanism and the second clamping mechanism; the tee joint can be placed in a groove formed after the first square groove and the second square groove are communicated, the tee joint is sealed, clamped and fixed through the first clamping mechanism, the second clamping mechanism and the third clamping mechanism, when clamping is conducted, the groove wall of the first square groove, far away from the third clamping mechanism, and the output end of the third clamping mechanism form an interaction force, and the tee joint can be protected from being damaged when clamping is conducted.
(3) The stopper that sets up, when needs leak hunting to the elbow, need to be fixed stopper and supporting platform installation, the pipe of one side of elbow is arranged in the second square groove, and another side pipe of elbow is arranged in the groove that first square groove is close first fixture, and it is sealed the centre gripping fixed through first fixture and third fixture.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a perspective view of a leak detection device for a pipe joint according to the present invention;
FIG. 2 is a perspective view of a leak detection device for a pipe joint according to the present invention;
FIG. 3 is a perspective view showing the combination of the lifting platform, the first clamping mechanism, the second clamping mechanism, the third clamping mechanism and the sealing washer of the leak detector for pipe joints according to the present invention;
FIG. 4 is a perspective view of a support platform and a limiting block of the leak hunting device for a pipe joint according to the present invention;
fig. 5 is a front view, in half section, of a gas filling channel and a first clamping portion of a leak detector for a pipe joint according to the present invention.
In the figure: 1. a water tank, 11, a drainage pipeline, 2, a lifting platform, 3, a leakage detection device, 31, a first clamping mechanism, 311, an air filling channel, 3111, an air injection hole, 3112, an air source connecting hole, 312, a first clamping cylinder, 313, a first clamping part, 32, a second clamping mechanism, 321, a second clamping cylinder, 322, a second clamping part, 33, a third clamping mechanism, 331, a third clamping cylinder, 332, a third clamping part, 34, a supporting limiting component, 341, a supporting platform, 3411, a first square groove, 3412, a second square groove, 342, a limiting block, 35, a sealing gasket, 4, a support, 3415, and a vertical driving device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments of the present invention, belong to the protection scope of the present invention.
As shown in fig. 1-5, the leakage detecting device for a pipe joint of the present invention comprises a water tank 1, a lifting platform 2, a plurality of leakage detecting devices 3, a support 4 and a plurality of vertical driving devices 5; the bracket 4 is horizontally placed on the ground, the water tank 1 is horizontally and fixedly arranged on the bracket 4, and the notch of the water tank 1 is upward; a plurality of vertical driving devices 5 are fixedly arranged on the support 4 at intervals and are vertically positioned above the water tank 1, and one end of each vertical driving device 5 close to the water tank 1 is vertically fixed with the lifting platform 2; the vertical driving device 5 drives the lifting platform 2 to move along the axial extension direction of the vertical driving device 5, and the lifting platform 2 is selectively sunk into the water in the water tank 1; a drainage pipeline 11 is arranged at the bottom of the water tank 1, and a valve is arranged on the drainage pipeline 11; the plurality of leakage detection devices 3 are all arranged on the lifting platform 2, and each leakage detection device 3 comprises a first clamping mechanism 31, a second clamping mechanism 32, a third clamping mechanism 33 and a supporting and limiting assembly 34; the axial extension direction of the first clamping mechanism 31 is collinear with the axial extension direction of the second clamping mechanism 32; the supporting and limiting assembly 34 is positioned between the first clamping mechanism 31 and the second clamping mechanism 32; the axial extension of the third clamping mechanism 33 is perpendicular to the axial extension of the first clamping mechanism 31; the first clamping mechanism 31 is provided with an air adding channel 311, the output end of the first clamping mechanism 31, the output end of the second clamping mechanism 32 or the output end of the third clamping mechanism 33 selectively move towards the direction of the supporting and limiting assembly 34, and two ends of the air adding channel 311 are respectively communicated with a pipe joint and an air source; the three sealing gaskets 35 are respectively fixedly arranged at one end of the first clamping mechanism 31 close to the supporting and limiting assembly 34, one end of the second clamping mechanism 32 close to the supporting and limiting assembly 34 and one end of the third clamping mechanism 33 close to the supporting and limiting assembly 34.
When the device is used, the pipe joint is placed on the supporting and limiting assembly 34, the pipe joint is clamped and fixed in a sealing mode through the first clamping mechanism 31, the second clamping mechanism 32 or the third clamping mechanism 33, gas is injected into the pipe joint through the gas filling channel 311 on the first clamping mechanism 31, then the lifting platform 2, the leak detection device 3 on the lifting platform 2 and the pipe joint are driven by the vertical driving device 5 to sink into water in the water tank 1, and the condition of the pipe joint in the water is observed to judge the quality of the pipe joint.
In a specific embodiment of the present invention, the supporting and limiting assembly 34 is a device for supporting and limiting the pipe joint, and the supporting and limiting assembly 34 includes a supporting platform 341 and a limiting block 342; the supporting platform 341 is detachably disposed on the lifting platform 2, and a first square groove 3411 and a second square groove 3412 are disposed on the surface of the supporting platform 341 away from the lifting platform 2; the two ends of the first square groove 3411 are respectively vertically faced to the output end of the first clamping mechanism 31 and the output end of the second clamping mechanism 32; one end of the second square groove 3412 is vertically communicated with the first square groove 3411, and the other end of the second square groove 3412 is vertically directed toward the output end of the third clamping mechanism 33; the stopper 342 is detachably disposed in the first groove 3411; the end surface of the limiting block 342 far from the second clamping mechanism 32 is an arc surface, and the arc surface is in smooth transition with the groove wall of the second square groove 3412 close to the second clamping mechanism 32 and the groove wall of the first square groove 3411 far from the third clamping mechanism 33 respectively; the width of the first square groove 3411 and the width of the second square groove 3412 are both adapted to the diameter of the pipe joint; the groove depth of the first square groove 3411 and the groove depth of the second square groove 3412 are larger than the radius of the pipe joint. When leakage detection is performed on the tee joint and the straight-through joint, the limiting block 342 needs to be detached from the supporting platform 341; the through hole can be placed in the first square groove 3411 and sealed and clamped by the first clamping mechanism 31 and the second clamping mechanism 32; the tee can be placed in a groove formed after the first square groove 3411 is communicated with the second square groove 3412, the tee is clamped and fixed in a sealing mode through the first clamping mechanism 31, the second clamping mechanism 32 and the third clamping mechanism 33, and when the tee is clamped, the groove wall of the first square groove 3411 far away from the third clamping mechanism 33 and the output end of the third clamping mechanism 33 form interaction force, so that the tee can be protected from being damaged during clamping; when the elbow needs to be subjected to leak detection, the limiting block 342 and the supporting platform 341 need to be installed and fixed, one side pipe of the elbow is located in the second square groove 3412, the other side pipe of the elbow is located in the groove of the first square groove 3411 close to the first clamping mechanism 31, and the first clamping mechanism 31 and the third clamping mechanism 33 are used for clamping and fixing the elbow in a sealing manner.
In an embodiment of the present invention, the first clamping mechanism 31 includes a first clamping cylinder 312 and a first clamping portion 313, the first clamping portion 313 is located between the first clamping cylinder 312 and the supporting and limiting assembly 34, the first clamping cylinder 312 is fixedly disposed on the lifting platform 2; the first clamping cylinder 312 is fixedly connected with the first clamping part 313 and selectively drives the first clamping part 313 to move towards the supporting and limiting assembly 34; the gas filling channel 311 is fixedly arranged on the first clamping part 313; the gas filling channel 311 includes a gas injection hole 3111 and a gas source connection hole 3112, the gas injection hole 3111 is provided at an end of the first clamping portion 313 remote from the clamp cylinder 211, and an orifice of the gas injection hole 3111 faces a port where the pipe joint contacts the first clamping portion 313; on the first clamping part 313 of the gas source connecting hole 3112, the gas source connecting hole 3112 is communicated with the gas injection hole 3111, and the orifice of the gas source connecting hole 3112 is communicated with the gas source; the second clamping mechanism 32 comprises a second clamping cylinder 321 and a second clamping part 322, the second clamping part 322 is located between the second clamping cylinder 321 and the supporting and limiting assembly 34, and the second clamping cylinder 321 is fixedly arranged on the lifting platform 2; the second clamping cylinder 321 is fixedly connected with the second clamping portion 322 and selectively drives the second clamping portion 322 to move towards the supporting and limiting assembly 34; the third clamping mechanism 33 comprises a third clamping cylinder 331 and a third clamping part 332, the third clamping part 332 is located between the third clamping cylinder 331 and the supporting and limiting assembly 34, and the third clamping cylinder 331 is fixedly arranged on the lifting platform 2; the third clamping cylinder 331 is fixedly connected to the third clamping portion 332, and selectively drives the third clamping portion 332 to move toward the supporting and limiting assembly 34. Can set up a plurality of long waist through-holes corresponding first die clamping cylinder 312, second die clamping cylinder 321 and the position at third die clamping cylinder 331 place on lift platform 2, pass long waist through-hole through the bolt and make the die clamping cylinder and lift platform 2 fixed connection that correspond, can change the position between first die clamping cylinder 312, second die clamping cylinder 321 and the third die clamping cylinder 331 three like this for leak hunting device 3 can carry out the leak hunting to the coupling of different models.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a device that leaks hunting of coupling, includes basin (1), and basin (1) notch is up and the level is placed, its characterized in that: also comprises a lifting platform (2) and a plurality of leakage detection devices (3), wherein,
the lifting platform (2) is horizontally arranged above the notch of the water tank (1) and selectively sinks into the water tank (1); the leakage detection devices (3) are all arranged on the lifting platform (2), and each leakage detection device (3) comprises a first clamping mechanism (31), a second clamping mechanism (32), a third clamping mechanism (33) and a supporting and limiting assembly (34);
the axial extension direction of the first clamping mechanism (31) is collinear with the axial extension direction of the second clamping mechanism (32); the supporting and limiting assembly (34) is positioned between the first clamping mechanism (31) and the second clamping mechanism (32); the axial extension of the third clamping mechanism (33) is vertical to the axial extension direction of the first clamping mechanism (31);
the first clamping mechanism (31) is provided with a gas filling channel (311), the output end of the first clamping mechanism (31), the output end of the second clamping mechanism (32) or the output end of the third clamping mechanism (33) selectively move towards the direction of the supporting and limiting assembly (34), and the two ends of the gas filling channel (311) are respectively communicated with the pipe joint and a gas source.
2. The leak hunting device for pipe joints as claimed in claim 1, wherein: the supporting and limiting assembly (34) comprises a supporting platform (341), the supporting platform (341) is detachably arranged on the lifting platform (2), and a first square groove (3411) and a second square groove (3412) are formed in the surface, away from the lifting platform (2), of the supporting platform (341); two ends of the first square groove (3411) respectively face the output end of the first clamping mechanism (31) and the output end of the second clamping mechanism (32) vertically; one end of the second square groove (3412) is vertically communicated with the first square groove (3411), and the other end of the second square groove (3412) vertically faces the output end of the third clamping mechanism (33).
3. The leak detecting device for a pipe joint as claimed in claim 2, wherein: the supporting and limiting assembly (34) further comprises a limiting block (342), and the limiting block (342) is detachably arranged in the first square groove (3411); the end face of the limiting block (342) far away from the second clamping mechanism (32) is an arc surface, and the arc surface is in smooth transition with the groove wall of the second square groove (3412) close to the second clamping mechanism (32) and the groove wall of the first square groove (3411) far away from the third clamping mechanism (33).
4. A leak hunting device for pipe joints as claimed in claim 3, wherein: the groove width of the first square groove (3411) and the groove width of the second square groove (3412) are both matched with the diameter of the pipe joint; the groove depth of the first square groove (3411) and the groove depth of the second square groove (3412) are both larger than the radius of the pipe joint.
5. The leak hunting device for pipe joints as claimed in claim 1, wherein: the leakage detection device (3) further comprises three sealing gaskets (35), wherein the three sealing gaskets (35) are respectively and fixedly arranged at one end, close to the supporting and limiting assembly (34), of the first clamping mechanism (31), one end, close to the supporting and limiting assembly (34), of the second clamping mechanism (32) and one end, close to the supporting and limiting assembly (34), of the third clamping mechanism (33).
6. The leak hunting device for pipe joints as claimed in claim 1, wherein: the first clamping mechanism (31) comprises a first clamping cylinder (312) and a first clamping part (313), wherein,
the first clamping part (313) is positioned between the first clamping cylinder (312) and the supporting and limiting assembly (34), and the first clamping cylinder (312) is fixedly arranged on the lifting platform (2);
the first clamping cylinder (312) is fixedly connected with the first clamping part (313) and selectively drives the first clamping part (313) to move towards the direction of the supporting and limiting assembly (34); the gas filling channel (311) is fixedly arranged on the first clamping part (313).
7. The leak hunting device for pipe joints as claimed in claim 5, wherein: the gas filling channel (311) comprises a gas injection hole (3111) and a gas source connecting hole (3112), wherein,
the gas injection hole (3111) is arranged at one end, away from the clamping cylinder (211), of the first clamping part (313), and the orifice of the gas injection hole (3111) faces to the port, in contact with the first clamping part (313), of the pipe joint;
on gas source connecting hole (3112) first holder (313), gas source connecting hole (3112) and gas injection hole (3111) intercommunication, the drill way and the gas source of gas source connecting hole (3112) intercommunication.
8. The leak hunting device for pipe joints as claimed in claim 1, wherein: the second clamping mechanism (32) comprises a second clamping cylinder (321) and a second clamping part (322), wherein,
the second clamping part (322) is positioned between the second clamping cylinder (321) and the supporting and limiting assembly (34), and the second clamping cylinder (321) is fixedly arranged on the lifting platform (2);
the second clamping cylinder (321) is fixedly connected with the second clamping part (322) and selectively drives the second clamping part (322) to move towards the direction of the supporting and limiting assembly (34).
9. The leak hunting device for pipe joints as claimed in claim 1, wherein: the third clamping mechanism (33) comprises a third clamping cylinder (331) and a third clamping part (332), wherein,
the third clamping part (332) is positioned between the third clamping cylinder (331) and the supporting and limiting assembly (34), and the third clamping cylinder (331) is fixedly arranged on the lifting platform (2);
the third clamping cylinder (331) is fixedly connected with the third clamping part (332) and selectively drives the third clamping part (332) to move towards the direction of the supporting and limiting assembly (34).
10. The leak hunting device for pipe joints as claimed in claim 1, wherein: also comprises a bracket (4) and a plurality of vertical driving devices (5), wherein,
the support (4) is horizontally placed on the ground, and the water tank (1) and the vertical driving devices (5) are fixedly arranged on the support (4);
the plurality of vertical driving devices (5) are arranged at intervals and are vertically positioned above the water tank (1), and one end, close to the water tank (1), of each vertical driving device (5) is vertically fixed with the lifting platform (2); the vertical driving device (5) drives the lifting platform (2) to move along the axial extension direction of the vertical driving device (5); a drainage pipeline (11) is arranged at the bottom of the water tank (1), and a valve is arranged on the drainage pipeline (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123407696.4U CN216955020U (en) | 2021-12-30 | 2021-12-30 | Leak hunting device of coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123407696.4U CN216955020U (en) | 2021-12-30 | 2021-12-30 | Leak hunting device of coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216955020U true CN216955020U (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123407696.4U Active CN216955020U (en) | 2021-12-30 | 2021-12-30 | Leak hunting device of coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216955020U (en) |
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2021
- 2021-12-30 CN CN202123407696.4U patent/CN216955020U/en active Active
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