CN215947594U - Textile cloth wetting device for spinning - Google Patents
Textile cloth wetting device for spinning Download PDFInfo
- Publication number
- CN215947594U CN215947594U CN202122330832.8U CN202122330832U CN215947594U CN 215947594 U CN215947594 U CN 215947594U CN 202122330832 U CN202122330832 U CN 202122330832U CN 215947594 U CN215947594 U CN 215947594U
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- roller
- cloth
- inner cylinder
- cylinder
- wetting
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- 239000004744 fabric Substances 0.000 title claims abstract description 142
- 238000009736 wetting Methods 0.000 title claims abstract description 59
- 239000004753 textile Substances 0.000 title claims abstract description 50
- 238000009987 spinning Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000011229 interlayer Substances 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000010410 layer Substances 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 description 20
- 238000010586 diagram Methods 0.000 description 9
- 239000000835 fiber Substances 0.000 description 4
- 238000009941 weaving Methods 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Treatment Of Fiber Materials (AREA)
Abstract
The utility model provides a textile cloth wetting device for spinning, which comprises a base, wherein a wetting cylinder is fixedly arranged on the base, a cloth feeding roller and a cloth receiving roller are respectively arranged at two ends of the wetting cylinder, and the cloth feeding roller and the cloth receiving roller are respectively fixed on the base through a supporting piece; the wetting cylinder comprises an outer cylinder and an inner cylinder, an interlayer is arranged between the outer cylinder and the inner cylinder, a first air inlet is formed in the outer cylinder and communicated with a water vapor source, and a plurality of second air inlets are uniformly formed in the inner cylinder. According to the utility model, the wetting cylinder is of a double-layer structure, woven cloth enters from one end of the wetting cylinder, the other end of the wetting cylinder outputs, the outer cylinder of the wetting cylinder is provided with the first air inlet hole, water vapor enters the interlayer between the inner cylinder and the outer cylinder from the first air inlet hole, the interlayer is filled with the water vapor and then enters the inner cylinder from the second air inlet hole, and the water vapor entering the inner cylinder is uniformly distributed because the second air inlet hole is uniformly distributed on the inner cylinder, so that the woven cloth in the inner cylinder is uniformly wetted, and a higher wetting effect is achieved.
Description
Technical Field
The utility model relates to the technical field of spinning, in particular to a textile cloth wetting device for spinning.
Background
The humidity condition is closely related to the textile technology, and the textile industry produces fiber raw materials, and under different humidity conditions, the physical properties and mechanical properties (such as moisture regain, tensile strength, elongation, softness, conductivity and the like) of the fiber raw materials can be changed to different degrees, for example, cotton fibers, when the relative humidity is sixty percent to seventy percent, the tensile strength of the fibers can be improved by about one percent compared with the dry state, because the relative displacement can be generated under the action of external force due to the increase of the distance between molecules of the cotton fibers after moisture absorption, so the elongation of the fibers is increased along with the increase of the relative humidity. Also, the moisture of woven cloth woven from fiber materials is important before subsequent processing, and thus it is required to wet the woven cloth.
Present weaving cloth wetting device, the weaving cloth of most water moistening has moist inhomogeneous condition, and moist effect is not good to cause the influence to weaving cloth's performance, also cause adverse effect to the production of its each follow-up process, lead to its finished product output and quality impaired.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a textile cloth wetting device for spinning, which solves the problem of uneven wetting of textile cloth.
The utility model is realized by the following technical scheme, and provides a textile cloth wetting device for spinning, which comprises a base, wherein a wetting cylinder is fixedly arranged on the base, a cloth feeding roller and a cloth receiving roller are respectively arranged at two ends of the wetting cylinder, and the cloth feeding roller and the cloth receiving roller are respectively fixed on the base through a supporting piece;
the wetting cylinder comprises an outer cylinder and an inner cylinder, an interlayer is arranged between the outer cylinder and the inner cylinder, a first air inlet is formed in the outer cylinder and communicated with a water vapor source, and a plurality of second air inlets are uniformly formed in the inner cylinder.
Preferably, a first electromagnetic valve is arranged on a communication pipeline between the first air inlet hole and the water vapor source, a second electromagnetic valve is arranged on the second air inlet hole, a pressure sensor is arranged in the inner cylinder, and the first electromagnetic valve, the second electromagnetic valve and the pressure sensor are all electrically connected with the controller.
Preferably, a temperature sensor is arranged in the inner barrel, a heater is arranged on the outer wall of the inner barrel, and the temperature sensor and the heater are electrically connected with the controller.
Preferably, be provided with the equipartition ware in the inner tube, the equipartition ware includes first transfer roller and second transfer roller at least, first transfer roller level set up, and with the axial of inner tube is perpendicular, first transfer roller is located inner tube axis top, the second transfer roller with first transfer roller is parallel, the second transfer roller is located inner tube axis below, just first transfer roller to the axis the distance with the second transfer roller equals to the distance of axis.
Preferably, the cloth feeding roller comprises an upper cloth feeding roller and a lower cloth feeding roller, and the textile cloth is positioned between the upper cloth feeding roller and the lower cloth feeding roller; connect the cloth roller including connect the cloth roller and connect the cloth roller down, weaving cloth is located connect the cloth roller and connect down between the cloth roller on.
Preferably, a first guide roller matched with the cloth feeding roller is arranged at the left end in the inner cylinder, and a second guide roller matched with the cloth receiving roller is arranged at the right end in the inner cylinder; the first guide roller comprises a first upper guide roller and a first lower guide roller, the woven cloth is positioned between the first upper guide roller and the first lower guide roller, the second guide roller comprises a second upper guide roller and a second lower guide roller, and the woven cloth is positioned between the second upper guide roller and the second lower guide roller.
Preferably, the outer surfaces of the upper cloth feeding roller and the lower cloth feeding roller are fixed with bristles.
The technical scheme provided by the embodiment of the utility model has the following beneficial effects:
the utility model provides a textile cloth wetting device for spinning, which comprises a base, wherein a wetting cylinder is fixedly arranged on the base, a cloth feeding roller and a cloth receiving roller are respectively arranged at two ends of the wetting cylinder, and the cloth feeding roller and the cloth receiving roller are respectively fixed on the base through a supporting piece; the wetting cylinder comprises an outer cylinder and an inner cylinder, an interlayer is arranged between the outer cylinder and the inner cylinder, a first air inlet is formed in the outer cylinder and communicated with a water vapor source, and a plurality of second air inlets are uniformly formed in the inner cylinder. According to the utility model, the wetting cylinder is of a double-layer structure, woven cloth enters from one end of the wetting cylinder, the other end of the wetting cylinder outputs, the outer cylinder of the wetting cylinder is provided with the first air inlet hole, water vapor enters the interlayer between the inner cylinder and the outer cylinder from the first air inlet hole, the interlayer is filled with the water vapor and then enters the inner cylinder from the second air inlet hole, and the water vapor entering the inner cylinder is uniformly distributed because the second air inlet hole is uniformly distributed on the inner cylinder, so that the woven cloth in the inner cylinder is uniformly wetted, and a higher wetting effect is achieved.
Drawings
For a clearer explanation of the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic external structure diagram of a textile cloth wetting device for spinning provided by an embodiment of the utility model.
FIG. 2 is a schematic diagram of the internal structure of a textile cloth wetting device for spinning provided by an embodiment of the utility model.
FIG. 3 is a schematic structural diagram of a cloth feeding roller of a textile cloth wetting device for spinning provided by an embodiment of the utility model.
FIG. 4 is a schematic structural diagram of a cloth receiving roller of a textile cloth wetting device for spinning provided by an embodiment of the utility model.
FIG. 5 is a schematic structural diagram of a first guide roller of a textile cloth wetting device for spinning provided by an embodiment of the utility model.
FIG. 6 is a schematic structural diagram of a second guide roller of a textile cloth wetting device for spinning provided by an embodiment of the utility model.
Shown in the figure:
1-a base, 2-a moistening cylinder, 3-a cloth feeding roller, 4-a cloth receiving roller, 5-a supporting piece, 6-a heater, 7-a uniform distributor, 8-a first guide roller and 9-a second guide roller;
21-outer cylinder, 22-inner cylinder, 23-interlayer, 31-upper cloth feeding roller, 32-lower cloth feeding roller, 41-upper cloth receiving roller, 42-lower cloth receiving roller, 81-first upper guide roller, 82-first lower guide roller, 91-second upper guide roller and 92-second lower guide roller;
211-first intake holes, 221-second intake holes.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, there are shown schematic structural diagrams of an inner part and an outer part of a textile cloth wetting apparatus for spinning and a cloth receiving roller and a cloth feeding roller of the textile cloth wetting apparatus for spinning according to an embodiment of the present invention.
As can be seen from fig. 1 and 2, the textile fabric wetting apparatus for spinning provided by the embodiment of the present invention includes a base 1, a wetting cylinder 2 is fixedly mounted on the base 1, the wetting cylinder is a horizontally arranged cylinder structure, a cloth feeding roller 3 and a cloth receiving roller 4 are respectively disposed at two ends of the wetting cylinder 2, the cloth feeding roller 3 and the cloth receiving roller 4 are respectively fixed on the base 1 through a support member 5, and correspondingly, openings for textile fabric to enter and exit are disposed at left and right ends of the wetting cylinder 2.
The cloth feeding roller 3 comprises an upper cloth feeding roller 31 and a lower cloth feeding roller 32, and woven cloth enters the moistening cylinder 2 between the upper cloth feeding roller 31 and the lower cloth feeding roller 32; the cloth receiving roller 4 comprises an upper cloth receiving roller 41 and a lower cloth receiving roller 42, and the wetted woven cloth is output to the wetting cylinder 2 between the upper cloth receiving roller 41 and the lower cloth receiving roller 42.
The moistening cylinder 2 comprises an outer cylinder 21 and an inner cylinder 22, an interlayer 23 is arranged between the outer cylinder 21 and the inner cylinder 22, a first air inlet hole 211 is formed in the outer cylinder 21, the first air inlet hole 211 is communicated with a water vapor source, and a plurality of second air inlet holes 221 are uniformly formed in the inner cylinder 22.
When the textile fabric wetting device for spinning is used, steam is conveyed to the outer cylinder 21 through the steam source firstly, the steam enters the interlayer 23 firstly, the interlayer 23 is filled with the steam, the steam uniformly enters the inner cylinder 22 through the second air inlet holes 221, when the steam in the inner cylinder 22 is sufficient, textile fabric is conveyed into the inner cylinder 22 of the wetting cylinder 2 for wetting, the textile fabric enters from the left end and is output from the right end of the inner cylinder 22, and the steam uniformly wets the textile fabric in the conveying process of the textile fabric in the inner cylinder 22.
Further, in this embodiment, a first electromagnetic valve is disposed on a communication pipeline between the first air inlet hole 211 and the steam source, a second electromagnetic valve is disposed on the second air inlet hole 221 and used for controlling the opening or closing of the second air inlet hole 221, a pressure sensor is disposed in the inner cylinder 22 and used for detecting the steam pressure in the inner cylinder 22, and the first electromagnetic valve, the second electromagnetic valve, and the pressure sensor are all electrically connected to the controller.
The steam source leads steam into the interlayer 23 through the first air inlet holes 211, the interlayer 23 is filled with the steam and then uniformly enters the inner cylinder 22 through the second air inlet holes 221, a plurality of pressure sensors are arranged in the inner cylinder 22, the number of the pressure sensors is less than that of the second air inlet holes 221, each pressure sensor corresponds to one second air inlet hole 221, and the controller controls the switch of the corresponding second air inlet hole 221 according to the pressure parameter detected by the pressure sensor and controls the switch of a circle of second air inlet holes 221 adjacent to the corresponding second air inlet hole 221.
The pressure sensor detects the pressure in the inner cylinder 22 at intervals of a certain time, the highest value and the lowest value of the pressure can be preset in the controller, when the pressure in the inner cylinder 22 detected by the pressure sensor is lower than the lowest value preset in the controller, the pressure in the inner cylinder 22 is insufficient, water vapor is lacked, and the wetting degree of the woven cloth is possibly insufficient, at the moment, the controller controls to open the second air inlet 221 at the corresponding position, and simultaneously opens the adjacent circle of second air inlet 221 at the corresponding position; when the pressure parameter in the inner cylinder 22 detected by the pressure sensor is between the highest value and the lowest value preset in the controller, maintaining the current state of the second electromagnetic valve; when the pressure parameter in the inner cylinder 22 detected by the pressure sensor is higher than the preset highest value in the controller, the pressure in the inner cylinder 22 is too high, and the water vapor is too much, at this time, the controller controls to close the second air inlet 221 at the corresponding position, and can simultaneously set to close a circle of second air inlet 221 adjacent to the second air inlet 221 at the corresponding position until the pressure parameter detected by the pressure sensor in the inner cylinder 22 is too low, and then the inner cylinder 22 is opened again.
When the textile cloth is wetted and a new roll of textile cloth needs to be replaced, the first electromagnetic valve is temporarily closed, the water vapor source is cut off, and the waste of water vapor resources is avoided.
Furthermore, in this embodiment, a temperature sensor is disposed in the inner cylinder 22, a heater 6 is disposed on an outer wall of the inner cylinder 22, and both the temperature sensor and the heater 6 are electrically connected to the controller. The steam is generated after the water is boiled, therefore, the steam is maintained in a gas state and needs to be under the condition of 100 ℃ higher than the boiling point, the temperature sensor is arranged in the inner barrel 22, the temperature in the inner barrel 22 is detected, when the temperature parameter detected by the temperature sensor is lower than 100 ℃, the controller controls the heater 6 to be opened, the inner barrel 22 is heated, the gas state of the steam is ensured, and the phenomenon that the steam is condensed into water drops and then drops to textile cloth to cause uneven wetting is avoided.
As shown in fig. 2, in this embodiment, be provided with equipartition device 7 in the inner tube 22, equipartition device 7 includes first transfer roller 71 and second transfer roller 72, and first transfer roller 71 and second transfer roller 72 structure are the same, first transfer roller 71 level sets up, and with the axial of inner tube 22 is perpendicular, first transfer roller 71 is located inner tube 22 axis top, second transfer roller 72 with first transfer roller 71 is parallel, second transfer roller 72 is located inner tube 22 axis below, just first transfer roller 71 to the axis the distance with second transfer roller 72 to the distance of axis equals. The two ends of the first conveying roller 71 and the second conveying roller 72 can be respectively fixed on the inner wall of the inner cylinder 22 through bearings, or can be rotatably fixed in the inner cylinder 22 through brackets, etc., for example, the two ends are respectively fixed on the bottom wall of the inner cylinder 22 through support rods, and the specific form of the present invention is not limited.
The textile fabric after entering the inner cylinder 22 runs downwards after bypassing the upper part of the first conveying roller 71, after bypassing the lower part of the second conveying roller 72, the inner cylinder 22 is output, the internal space of the inner cylinder 22 is divided into three parts from left to right by the first conveying roller 71 and the second conveying roller 72, the lengths of the three parts are equal, the first conveying roller 71 and the second conveying roller 72 are arranged, the textile fabric is enabled to advance in an S shape in the inner cylinder 22, the time of the textile fabric staying in the inner cylinder 22 is prolonged, and the wetting effect is improved.
Specifically, referring to fig. 5 and fig. 6, there are shown a schematic structural diagram of a first guide roller of a textile cloth wetting apparatus for spinning according to an embodiment of the present invention, and a schematic structural diagram of a second guide roller of a textile cloth wetting apparatus for spinning according to an embodiment of the present invention. As can be seen from fig. 5, 6 and 2, in the textile fabric wetting apparatus for spinning according to the embodiment of the present invention, a first guide roller 8 engaged with the fabric feeding roller 3 is disposed at the left end in the inner cylinder 22, and a second guide roller 9 engaged with the fabric receiving roller 4 is disposed at the right end in the inner cylinder 22; the first guide roller 8 and the second guide roller 9 have the same structure and are respectively fixed on the inner wall of the inner cylinder 22 through a support, the first guide roller 8 comprises a first upper guide roller 81 and a first lower guide roller 82, woven cloth is positioned between the first upper guide roller 81 and the first lower guide roller 82, the second guide roller 9 comprises a second upper guide roller 91 and a second lower guide roller 92, and the woven cloth is positioned between the second upper guide roller 91 and the second lower guide roller 92. The cloth feeding roller 3, the cloth receiving roller 4, the first guide roller 8 and the second guide roller 9 have the same structure.
Textile fabric enters the inner cylinder 22 from the cloth feeding roller 3, because the inner cylinder 22 is internally provided with the uniform distributor 7, the first conveying roller 71 and the second conveying roller 72 of the uniform distributor 7 are not in the same horizontal plane with the cloth feeding roller 3, so that the textile fabric is damaged by friction at the opening at the left end of the inner cylinder 22 when the textile fabric is prevented from passing from the cloth feeding roller 3 to the first conveying roller 71, the left end of the inner cylinder 22 is provided with the first guide roller 8 matched with the cloth feeding roller 3, the first guide roller 8 and the cloth feeding roller 3 are in the same horizontal plane, and the second guide roller 9 is arranged in the same way, so that the friction damage of the textile fabric is avoided.
More specifically, in the present embodiment, the outer surfaces of the upper cloth feed roller 31 and the lower cloth feed roller 32 are fixed with bristles. Before entering the moistening cylinder 2, the textile cloth passes through the cloth feeding roller 3, and can be cleaned by utilizing the bristles on the upper cloth feeding roller 31 and the lower cloth feeding roller 32, so that the textile cloth is prevented from being stained with dust and the like to enter the moistening cylinder 2.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (7)
1. A textile cloth wetting device for spinning is characterized by comprising a base (1), wherein a wetting cylinder (2) is fixedly mounted on the base (1), a cloth feeding roller (3) and a cloth receiving roller (4) are respectively arranged at two ends of the wetting cylinder (2), and the cloth feeding roller (3) and the cloth receiving roller (4) are respectively fixed on the base (1) through a support piece (5);
the humidifying cylinder (2) comprises an outer cylinder (21) and an inner cylinder (22), an interlayer (23) is arranged between the outer cylinder (21) and the inner cylinder (22), a first air inlet hole (211) is formed in the outer cylinder (21), the first air inlet hole (211) is communicated with a water vapor source, and a plurality of second air inlet holes (221) are uniformly formed in the inner cylinder (22).
2. The textile fabric wetting apparatus for spinning according to claim 1, wherein a first electromagnetic valve is arranged on a communication pipeline between the first air inlet hole (211) and a water vapor source, a second electromagnetic valve is arranged on the second air inlet hole (221), a pressure sensor is arranged in the inner cylinder (22), and the first electromagnetic valve, the second electromagnetic valve and the pressure sensor are all electrically connected with a controller.
3. A textile fabric wetting apparatus for spinning according to claim 2, wherein a temperature sensor is arranged in the inner cylinder (22), a heater (6) is arranged on the outer wall of the inner cylinder (22), and the temperature sensor and the heater (6) are electrically connected with the controller.
4. Textile fabric wetting apparatus for textiles according to claim 3, characterized in that an equipartition device (7) is provided in the inner cylinder (22), the equipartition device (7) comprises at least a first transport roller (71) and a second transport roller (72), the first transport roller (71) is horizontally arranged and perpendicular to the axial direction of the inner cylinder (22), the first transport roller (71) is located above the central axis of the inner cylinder (22), the second transport roller (72) is parallel to the first transport roller (71), the second transport roller (72) is located below the central axis of the inner cylinder (22), and the distance from the first transport roller (71) to the central axis is equal to the distance from the second transport roller (72) to the central axis.
5. A woven cloth moistening device for textile according to claim 1, characterized in that the feed roll (3) comprises an upper feed roll (31) and a lower feed roll (32), the woven cloth being located between the upper feed roll (31) and the lower feed roll (32); the cloth receiving roller (4) comprises an upper cloth receiving roller (41) and a lower cloth receiving roller (42), and textile cloth is located between the upper cloth receiving roller (41) and the lower cloth receiving roller (42).
6. A textile fabric wetting apparatus for spinning according to claim 5, characterized in that a first guide roller (8) matched with the fabric feeding roller (3) is arranged at the left end in the inner cylinder (22), and a second guide roller (9) matched with the fabric receiving roller (4) is arranged at the right end in the inner cylinder (22); the first guide roller (8) comprises a first upper guide roller (81) and a first lower guide roller (82), the woven cloth is positioned between the first upper guide roller (81) and the first lower guide roller (82), the second guide roller (9) comprises a second upper guide roller (91) and a second lower guide roller (92), and the woven cloth is positioned between the second upper guide roller (91) and the second lower guide roller (92).
7. A textile fabric wetting apparatus for spinning according to claim 6, wherein bristles are fixed to the outer surface of the upper feed roll (31) and the lower feed roll (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122330832.8U CN215947594U (en) | 2021-09-26 | 2021-09-26 | Textile cloth wetting device for spinning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122330832.8U CN215947594U (en) | 2021-09-26 | 2021-09-26 | Textile cloth wetting device for spinning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215947594U true CN215947594U (en) | 2022-03-04 |
Family
ID=80428051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122330832.8U Expired - Fee Related CN215947594U (en) | 2021-09-26 | 2021-09-26 | Textile cloth wetting device for spinning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215947594U (en) |
-
2021
- 2021-09-26 CN CN202122330832.8U patent/CN215947594U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220304 |
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| CF01 | Termination of patent right due to non-payment of annual fee |