CN215390776U - Screening device for production of wear-resistant materials - Google Patents
Screening device for production of wear-resistant materials Download PDFInfo
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- CN215390776U CN215390776U CN202120741055.3U CN202120741055U CN215390776U CN 215390776 U CN215390776 U CN 215390776U CN 202120741055 U CN202120741055 U CN 202120741055U CN 215390776 U CN215390776 U CN 215390776U
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Abstract
The utility model provides a screening device for producing wear-resistant materials. The screening device for producing the wear-resistant material comprises a box body; the guide cylinder is fixedly arranged on the inner wall of the top of the box body, and the top and the bottom of the guide cylinder are both provided with openings; the feeding hopper is fixedly arranged at the top of the box body, and the feeding hopper and the guide cylinder are correspondingly distributed; the fixed rod is fixedly arranged in the guide cylinder; the first rotating shaft is rotatably arranged on the fixed rod, and the top end and the bottom end of the first rotating shaft extend out of the fixed rod; and the blades are fixedly arranged on the first rotating shaft and are positioned above the fixed rod. The screening device for producing the wear-resistant material, provided by the utility model, has the advantages of being high in screening speed, capable of effectively avoiding screen blockage, improving screening efficiency and convenient for people to take out residual impurities.
Description
Technical Field
The utility model relates to the technical field of production of wear-resistant steel plates, in particular to a screening device for production of wear-resistant materials.
Background
The wear-resistant steel plate is a special plate product specially used under the working condition of large-area wear, the alloy wear-resistant layer of the wear-resistant steel plate is metallurgically bonded with the substrate, the alloy wear-resistant layer mainly comprises chromium alloy, meanwhile, other alloy components such as manganese, molybdenum, niobium, nickel and the like are added, carbides in a metallographic structure are distributed in a fibrous shape, the fiber direction is vertical to the surface, the alloy carbides have strong stability at high temperature and keep higher hardness, meanwhile, the alloy also has good oxidation resistance, so that other alloy components such as manganese, molybdenum, niobium, nickel and the like which are commonly used components are added, the additives are often required to be ground into fine powder for more uniform and sufficient fusion, the particle size of these additives indirectly determines the quality of the product, and therefore one needs to screen the powder after grinding to avoid the concomitant mixing of some rejected and unscreened impurities.
However, the screening device used at present is not only slow in screening speed during screening, but also easy to block the screen during screening, and is inconvenient to take out the residual impurities after screening.
Therefore, there is a need to provide a new screening device for producing wear-resistant materials to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model solves the technical problem of providing the screening device for producing the wear-resistant material, which has the advantages of high screening speed, capability of effectively avoiding the blockage of a screen, improved screening efficiency and convenience for people to take out residual impurities.
In order to solve the technical problem, the screening device for producing the wear-resistant material provided by the utility model comprises: a box body; the guide cylinder is fixedly arranged on the inner wall of the top of the box body, and the top and the bottom of the guide cylinder are both provided with openings; the feeding hopper is fixedly arranged at the top of the box body, and the feeding hopper and the guide cylinder are correspondingly distributed; the fixed rod is fixedly arranged in the guide cylinder; the first rotating shaft is rotatably arranged on the fixed rod, and the top end and the bottom end of the first rotating shaft extend out of the fixed rod; the blades are fixedly arranged on the first rotating shaft and are positioned above the fixed rod; the screen is arranged on the bottom of the guide cylinder; the sliding mechanism is arranged in the box body and is correspondingly connected with the screen; and the cleaning mechanism is arranged in the box body.
Preferably, glide machanism includes two electric telescopic handle, two bracing pieces, a plurality of constant head tank, a plurality of locating piece and two guiding mechanism, two electric telescopic handle is fixed mounting respectively on the both sides inner wall of box, two electric telescopic handle is located respectively the both sides of guide cylinder, two the bracing piece is fixed mounting respectively two on electric telescopic handle's the output pole, two the bracing piece one end that is close to each other respectively with the both sides fixed connection of screen cloth, it is a plurality of the constant head tank is that circular array evenly sets up on the bottom inner wall of guide cylinder, it is a plurality of the locating piece sets up respectively in the constant head tank, it is a plurality of the bottom of locating piece all with the top fixed connection of screen cloth, two guiding mechanism sets up respectively two on the bracing piece.
Preferably, the guide mechanism comprises two fixing blocks and a guide rod, the two fixing blocks are fixedly mounted on the inner wall of the same side of the box body, the two fixing blocks are respectively located above and below the supporting rod, the guide rod is slidably mounted on the supporting rod, and the top end and the bottom end of the guide rod both extend out of the supporting rod and are respectively fixedly connected with the two fixing blocks.
Preferably, the cleaning mechanism comprises two supports, a housing, a motor, a second rotating shaft, a key groove, a spline and two brush plates, the two supports are respectively and fixedly mounted at the bottoms of the two support rods, the housing is fixedly mounted on the two supports, the housing is positioned under the screen, the motor is fixedly mounted in the housing, the second rotating shaft is rotatably mounted on the inner wall of the top of the housing, the bottom end of the second rotating shaft is positioned in the housing and fixedly connected with an output shaft of the motor, the top end of the second rotating shaft extends into the guide cylinder and contacts with the bottom end of the first rotating shaft, the second rotating shaft is rotatably connected with the screen, the key groove is formed in the bottom end of the first rotating shaft, the spline is engaged in the key groove, and the bottom end of the spline is fixedly connected with the top end of the second rotating shaft, two equal fixed mounting of brush board is in the second pivot, two the brush board all is located the top of screen cloth, two the bottom burr of brush board all with the top of screen cloth contacts.
Preferably, a plurality of stirring rods are fixedly mounted on the first rotating shaft and are all located below the fixing rod.
Preferably, the inner walls of the two sides of the box body are provided with rolling grooves, the supporting rods are far away from one end of the screen mesh and are movably embedded with balls, and the balls extend into the rolling grooves respectively.
Preferably, be equipped with wind pressure mechanism on the guide cylinder, wind pressure mechanism includes ring canal, a plurality of gas port, a plurality of play tuber pipe, pipe and fan, the fixed cover of ring canal is established on the guide cylinder, and is a plurality of the gas port is that circular array evenly sets up on the inner wall of guide cylinder, and is a plurality of it sets up respectively in a plurality of to go out the tuber pipe in the gas port, it is a plurality of the air inlet end that goes out the tuber pipe all with the inner circle fixed connection of ring canal, pipe fixed mounting is in on the ring canal, the air inlet end of pipe extends to outside the box, fan fixed mounting be in the box is located on one side of pipe, the air-out end of fan with the air inlet end fixed connection of pipe.
Compared with the related art, the screening device for producing the wear-resistant material has the following beneficial effects:
the utility model provides a screening device for producing wear-resistant materials, which comprises the following components:
1. materials can be concentrated and are convenient to screen through the use of the guide cylinder, the screen can screen the materials, downward flowing air can be formed through the blades through the use of the first rotating shaft, the materials flow at an accelerated speed when being discharged, the discharging efficiency is improved, and the condition of backflow of material dust is also avoided;
2. the screen and the guide cylinder are convenient to disassemble and combine through the sliding mechanism, so that powder is screened and impurities are removed, and the first rotating shaft and the second rotating shaft are separated and combined, so that cleaning is convenient;
3. the use through the guide arm can fix a position the removal of bracing piece, makes its motion more stable, and the use of cleaning the mechanism is convenient for people to separate the powder, is convenient for clean impurity simultaneously, and the effectual screen cloth that has avoided blockking up can be broken up the material through the use of puddler, and the use of rolling groove provides smooth and easy nature.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of a screening device for producing wear-resistant materials, provided by the utility model;
FIG. 2 is an enlarged schematic view of portion A shown in FIG. 1;
FIG. 3 is an enlarged schematic view of a portion B shown in FIG. 1;
FIG. 4 is a schematic structural view of a second embodiment of a screening device for producing wear-resistant materials provided by the present invention;
fig. 5 is an enlarged structural view of a portion C shown in fig. 4.
Reference numbers in the figures: 1. a box body; 2. a material guide cylinder; 3. a feed hopper; 4. fixing the rod; 5. a first rotating shaft; 6. a blade; 7. an electric telescopic rod; 8. a support bar; 9. a fixed block; 10. a guide bar; 11. screening a screen; 12. positioning a groove; 13. positioning blocks; 14. a support; 15. a housing; 16. a motor; 17. a second rotating shaft; 18. a keyway; 19. a spline; 20. brushing the board; 21. a ring pipe; 22. a gas port; 23. an air outlet pipe; 24. a conduit; 25. a fan.
Detailed Description
The utility model is further described with reference to the following figures and embodiments.
The first embodiment:
please refer to fig. 1-3 in combination. Screening plant is used in wear-resisting material production includes: a box body 1; the material guide cylinder 2 is fixedly arranged on the inner wall of the top of the box body 1, and the top and the bottom of the material guide cylinder 2 are both provided with openings; the feeding hopper 3 is fixedly arranged at the top of the box body 1, and the feeding hopper 3 and the guide cylinder 2 are correspondingly distributed; the fixing rod 4 is fixedly arranged in the guide cylinder 2; the first rotating shaft 5 is rotatably installed on the fixed rod 4, and the top end and the bottom end of the first rotating shaft 5 both extend out of the fixed rod 4; the blades 6 are all fixedly arranged on the first rotating shaft 5, and the blades 6 are all positioned above the fixed rod 4; the screen 11 is arranged on the bottom of the guide cylinder 2; the sliding mechanism is arranged in the box body 1 and correspondingly connected with the screen cloth 11; clean the mechanism, clean the mechanism setting and be in box 1, can make the material concentrate through the use of guide cylinder 2, the screening of being convenient for, screen cloth 11 can filter the material, and the use of first pivot 5 can form the wind of downward flow through blade 6, makes the material flow with higher speed when the discharge, has improved discharge efficiency, has also avoided the palirrhea condition of material dust.
The sliding mechanism comprises two electric telescopic rods 7, two supporting rods 8, a plurality of positioning grooves 12, a plurality of positioning blocks 13 and two guiding mechanisms, the two electric telescopic rods 7 are respectively and fixedly arranged on the inner walls of the two sides of the box body 1, the two electric telescopic rods 7 are respectively positioned on the two sides of the guide cylinder 2, the two supporting rods 8 are respectively and fixedly arranged on the output rods of the two electric telescopic rods 7, the ends, close to each other, of the two supporting rods 8 are respectively and fixedly connected with the two sides of the screen mesh 11, the positioning grooves 12 are uniformly arranged on the inner wall of the bottom of the guide cylinder 2 in a circular array, the positioning blocks 13 are respectively arranged in the positioning grooves 12, the bottom ends of the positioning blocks 13 are respectively and fixedly connected with the top of the screen mesh 11, and the two guiding mechanisms are respectively arranged on the two supporting rods 8, the screen mesh 11 and the guide cylinder 2 are convenient to disassemble and combine through the sliding mechanism, so that the powder is screened and impurities are removed, and the first rotating shaft 5 and the second rotating shaft 17 are separated and combined simultaneously, so that the cleaning is convenient.
The guide mechanism comprises two fixing blocks 9 and a guide rod 10, wherein the two fixing blocks 9 are fixedly arranged on the inner wall of the same side of the box body 1, the two fixing blocks 9 are respectively positioned above and below the supporting rod 8, the guide rod 10 is slidably arranged on the supporting rod 8, the top end and the bottom end of the guide rod 10 are respectively extended to the outside of the supporting rod 8 and are respectively fixedly connected with the two fixing blocks 9, and the guide rod 10 can be used for positioning the movement of the supporting rod 8, so that the movement of the guide rod is more stable.
The cleaning mechanism comprises two supports 14, a shell 15, a motor 16, a second rotating shaft 17, a key groove 18, a spline 19 and two brush plates 20, wherein the two supports 14 are respectively and fixedly installed at the bottoms of the two supporting rods 8, the shell 15 is fixedly installed at the two supports 14, the shell 15 is positioned under the screen cloth 11, the motor 16 is fixedly installed in the shell 15, the second rotating shaft 17 is rotatably installed on the inner wall of the top of the shell 15, the bottom end of the second rotating shaft 17 is positioned in the shell 15 and fixedly connected with an output shaft of the motor 16, the top end of the second rotating shaft 17 extends into the guide cylinder 2 and is contacted with the bottom end of the first rotating shaft 5, the second rotating shaft 17 is rotatably connected with the screen cloth 11, the key groove 18 is arranged at the bottom end of the first rotating shaft 5, and the spline 19 is engaged in the key groove 18, the bottom of spline 19 with the top fixed connection of second pivot 17, two equal fixed mounting of brush board 20 is in the second pivot 17, two brush board 20 all is located the top of screen cloth 11, two the bottom burr of brush board 20 all with the top of screen cloth 11 contacts, and the use of cleaning the mechanism is convenient for people to separate the powder, is convenient for clean impurity simultaneously, and the effectual screen cloth 11 of having avoided blockking up.
Fixed mounting has a plurality of puddlers on the first pivot 5, and is a plurality of the puddler all is located the below of dead lever 4 can be broken up the material through the use of puddler.
All seted up the slot rolling on the both sides inner wall of box 1, two the bracing piece 8 is kept away from one of screen cloth 11 is served and all has had the ball, two the ball extends to two respectively in the slot rolling, be favorable to the unloading, the use of slot rolling provides smooth and easy nature.
In this embodiment:
when feeding, firstly, pouring metal powder into the guide cylinder 2 through the feed hopper 3, and simultaneously screening;
during screening, the motor 16 is started, an output shaft of the motor 16 drives the second rotating shaft 17 to rotate, the second rotating shaft 17 drives the brush plate 20 to rotate, the brush plate 20 rotates to brush the screen cloth 11, burrs below the brush plate can avoid blocking of the screen cloth 11, the screened materials fall down, the first rotating shaft 5 is driven to rotate through the key groove 18 and the spline 19 when the second rotating shaft 17 rotates, the materials are scattered through the stirring rods when the first rotating shaft 5 rotates, screening by people is facilitated, meanwhile, the blades 6 rotate to generate downward blowing wind, the materials flow at an accelerated speed when being discharged, the discharging efficiency is improved, and the condition that dust of the materials flows backwards is also avoided;
when the screening finishes the removal of the remaining large granule, at first close motor 16, later start two electric telescopic handle 7, electric telescopic handle 7's output pole stretches out and promotes two bracing pieces 8 and slide on two guide arms 10, two bracing pieces 8 drive screen cloth 11 simultaneously and break away from guide cylinder 2, until locating piece 13 break away from constant head tank 12 can, second pivot 17 breaks away from first pivot 5 simultaneously, spline 19 breaks away from keyway 18, start motor 16 afterwards, at this moment brush board 20 rotates and cleans remaining large granule impurity on the screen cloth 11, discharge through box 1 at last.
Compared with the related art, the screening device for producing the wear-resistant material has the following beneficial effects:
the utility model provides a screening device for producing wear-resistant materials, which can concentrate materials and facilitate screening through the use of a guide cylinder 2, a screen 11 can screen the materials, a first rotating shaft 5 can form downward flowing air through blades 6 to accelerate the flow of the materials when the materials are discharged, the discharge efficiency is improved, and the condition of reverse flow of material dust is avoided, the screen 11 and the guide cylinder 2 are convenient to disassemble and combine through a sliding mechanism, so that screening of powder and clearing of impurities are realized, the first rotating shaft 5 and a second rotating shaft 17 are separated and combined simultaneously, so that cleaning is convenient, the movement of a support rod 8 can be positioned through the use of a guide rod 10, the movement of the support rod is more stable, the use of a cleaning mechanism is convenient for people to separate the powder, the impurities are convenient to clean, and the screen 11 is effectively prevented from being blocked, the material can be broken up through the use of puddler, is favorable to the unloading, and the use of rolling groove provides smooth and easy nature.
Second embodiment:
based on the sieve device for producing the wear-resistant material provided by the first embodiment of the application, the second embodiment of the application provides another sieve device for producing the wear-resistant material. The second embodiment is merely a preferred way of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.
The second embodiment of the present invention will be further described with reference to the drawings and the following description.
Referring to fig. 4-5, the screening device for producing wear-resistant materials further includes a wind pressure mechanism, the wind pressure mechanism is disposed on the guiding barrel 2, the wind pressure mechanism includes a circular tube 21, a plurality of air ports 22, a plurality of air outlet pipes 23, a guiding tube 24 and a fan 25, the circular tube 21 is fixedly sleeved on the guiding barrel 2, the air ports 22 are uniformly arranged on the inner wall of the guiding barrel 2 in a circular array, the air outlet pipes 23 are respectively disposed in the air ports 22, the air inlet ends of the air outlet pipes 23 are fixedly connected to the inner ring of the circular tube 21, the guiding tube 24 is fixedly mounted on the circular tube 21, the air inlet end of the guiding tube 24 extends to the outside of the box body 1, the fan 25 is fixedly mounted on one side of the guiding tube 24, the air outlet end of the fan 25 is fixedly connected to the air inlet end of the guiding tube 24, the downward movement and the discharge of the materials can be accelerated by using the downward pressing air, and the using effect is good.
In this embodiment:
when the device is used, the fan 25 is started, air enters the guide pipe 24 through the air supply of the fan 25, and then is divided into the air outlet pipes 23 through the ring pipe 21, so that the flow of materials is accelerated, and the sieving is accelerated.
Compared with the related art, the screening device for producing the wear-resistant material has the following beneficial effects:
the utility model provides a screening device for producing wear-resistant materials, which can accelerate downward movement and discharge of materials through the use of downward compressed air and has a good using effect.
It should be noted that the device structure and the accompanying drawings of the present invention mainly describe the principle of the present invention, and in the technology of the design principle, the settings of the power mechanism, the power supply system, the control system, and the like of the device are not completely described and clear, and on the premise that those skilled in the art understand the principle of the present invention, the details of the power mechanism, the power supply system, and the control system can be clearly known;
furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise;
in addition, in the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations;
in the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A screening device for producing wear-resistant materials is characterized by comprising:
a box body;
the guide cylinder is fixedly arranged on the inner wall of the top of the box body, and the top and the bottom of the guide cylinder are both provided with openings;
the feeding hopper is fixedly arranged at the top of the box body, and the feeding hopper and the guide cylinder are correspondingly distributed;
the fixed rod is fixedly arranged in the guide cylinder;
the first rotating shaft is rotatably arranged on the fixed rod, and the top end and the bottom end of the first rotating shaft extend out of the fixed rod;
the blades are fixedly arranged on the first rotating shaft and are positioned above the fixed rod;
the screen is arranged on the bottom of the guide cylinder;
the sliding mechanism is arranged in the box body and is correspondingly connected with the screen;
and the cleaning mechanism is arranged in the box body.
2. The screening device for producing wear-resistant materials of claim 1, wherein the sliding mechanism comprises two electric telescopic rods and two support rods, the electric telescopic handle is fixedly installed on the inner walls of the two sides of the box body respectively, the electric telescopic handle is located on the two sides of the guide cylinder respectively, the supporting rods are fixedly installed on the two output rods of the electric telescopic handle respectively, the supporting rods are close to one end of the screen cloth respectively, the supporting rods are fixedly connected with the two sides of the screen cloth, the positioning grooves are circular arrays and are evenly arranged on the inner wall of the bottom of the guide cylinder, the positioning blocks are arranged in the positioning grooves respectively, the positioning blocks are arranged in the positioning grooves in a plurality of numbers, the bottom ends of the positioning blocks are fixedly connected with the top of the screen cloth, and the guiding mechanisms are arranged on the supporting rods respectively.
3. The screening device for producing the wear-resistant materials as claimed in claim 2, wherein the guiding mechanism comprises two fixing blocks and a guide rod, the two fixing blocks are fixedly mounted on the inner wall of the same side of the box body, the two fixing blocks are respectively located above and below the supporting rod, the guide rod is slidably mounted on the supporting rod, and the top end and the bottom end of the guide rod extend out of the supporting rod and are respectively fixedly connected with the two fixing blocks.
4. The screening device for producing the wear-resistant materials as claimed in claim 2, wherein the cleaning mechanism comprises two brackets, a housing, a motor, a second rotating shaft, a key slot, a spline and two brush plates, the two brackets are respectively and fixedly mounted on the bottoms of the two support rods, the housing is fixedly mounted on the two brackets, the housing is located right below the screen, the motor is fixedly mounted in the housing, the second rotating shaft is rotatably mounted on the inner wall of the top of the housing, the bottom end of the second rotating shaft is located in the housing and fixedly connected with the output shaft of the motor, the top end of the second rotating shaft extends into the guide cylinder and contacts with the bottom end of the first rotating shaft, the second rotating shaft is rotatably connected with the screen, the key slot is arranged on the bottom end of the first rotating shaft, the spline meshing is in the keyway, the bottom of spline with the top fixed connection of second pivot, two the equal fixed mounting of brush board is in the second pivot, two the brush board all is located the top of screen cloth, two the bottom burr of brush board all with the top of screen cloth contacts.
5. The screening device for producing wear-resistant materials of claim 1, wherein a plurality of stirring rods are fixedly mounted on the first rotating shaft, and are all located below the fixing rod.
6. The screening device for the production of the wear-resistant materials as claimed in claim 1, wherein rolling grooves are formed in inner walls of two sides of the box body, balls are movably embedded in ends of the two support rods, which are far away from the screen, and the two balls respectively extend into the two rolling grooves.
7. The screening device for the production of wear-resistant materials according to claim 1, wherein a wind pressure mechanism is arranged on the guide cylinder, the wind pressure mechanism comprises a circular pipe, a plurality of air ports, a plurality of air outlet pipes, a guide pipe and a fan, the circular pipe is fixedly sleeved on the guide cylinder, the air ports are uniformly arranged on the inner wall of the guide cylinder in a circular array mode, the air outlet pipes are arranged in a plurality of air ports respectively, the air inlet ends of the air outlet pipes are connected with the inner ring of the circular pipe in a fixed mode, the guide pipe is fixedly arranged on the circular pipe, the air inlet ends of the guide pipe extend out of the box body, the fan is fixedly arranged on one side of the guide pipe, and the air outlet ends of the fan are connected with the air inlet ends of the guide pipe in a fixed mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120741055.3U CN215390776U (en) | 2021-04-13 | 2021-04-13 | Screening device for production of wear-resistant materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120741055.3U CN215390776U (en) | 2021-04-13 | 2021-04-13 | Screening device for production of wear-resistant materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215390776U true CN215390776U (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120741055.3U Active CN215390776U (en) | 2021-04-13 | 2021-04-13 | Screening device for production of wear-resistant materials |
Country Status (1)
| Country | Link |
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| CN (1) | CN215390776U (en) |
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2021
- 2021-04-13 CN CN202120741055.3U patent/CN215390776U/en active Active
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