CN215487845U - Sealed combination formula valve convenient to maintenance - Google Patents
Sealed combination formula valve convenient to maintenance Download PDFInfo
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- CN215487845U CN215487845U CN202121855411.0U CN202121855411U CN215487845U CN 215487845 U CN215487845 U CN 215487845U CN 202121855411 U CN202121855411 U CN 202121855411U CN 215487845 U CN215487845 U CN 215487845U
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- Prior art keywords
- check valve
- joint
- groove
- valve body
- check
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- Expired - Fee Related
Links
- 238000012423 maintenance Methods 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 12
- 238000000926 separation method Methods 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 3
- 239000000284 extract Substances 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 6
- 238000005485 electric heating Methods 0.000 description 6
- 239000003063 flame retardant Substances 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The application discloses sealed combination formula valve convenient to maintenance, including ball valve main part, check valve body, joint structure one, joint structure two, non return structure one and non return structure two, the solid fixed ring of lateral wall fixed connection of ball valve main part and check valve body, gu the last equidistance of fixed ring has seted up a plurality of screw hole one, the ball valve main part body passes through joint structure one and the connection of joint structure two with the check valve body. This application square baffle two blocks check valve body passageway, prevent the liquid backward flow, square baffle one keeps off check valve body passageway, further prevent the liquid backward flow, make the check valve have better non return effect, this application takes out the bolt from screw hole two, extract the joint piece from joint groove one and joint groove two, make check valve body and ball valve main part separation, the independent check valve body or ball valve main part of being convenient for avoids carrying out the whole replacement, make the maintenance cost higher.
Description
Technical Field
The application relates to the field of valves, in particular to a sealed combined valve convenient to maintain.
Background
The combined valve is composed of a ball valve and a check valve, and is widely applied to industries such as high-pressure water injection, petroleum, chemical engineering and the like.
Two valves of ball valve and check valve in traditional combination formula valve form through the welding combination, and when structural component damaged, it is inconvenient to change, and the majority carries out the whole change for the later maintenance cost is higher, and in addition, current check valve structure is complicated, and the non return effect is relatively poor. Therefore, a sealed combined valve convenient to maintain is provided for solving the problems.
Disclosure of Invention
The combined sealing valve convenient to maintain is provided in the embodiment and is used for solving the problem of poor integral replacement and check effect of the check valve in the prior art.
According to an aspect of the application, a sealed combination formula valve convenient to maintenance is provided, including ball valve main part, check valve body, joint structure one, joint structure two, non return structure one and non return structure two, the solid fixed ring of lateral wall fixed connection of ball valve main part and check valve body, a plurality of screw hole one has been seted up to solid fixed ring equidistance, ball valve main part body and check valve body pass through joint structure one and joint structure two are connected, two joint groove two have been seted up to the top and the bottom of ball valve main part, ring channel two has been seted up in the left side of ball valve main part, the inside of check valve body is provided with non return structure one and non return structure two, the right side fixed connection annular lug of check valve body, the sealed pad of lateral wall fixed connection of annular lug.
Furthermore, the sealing gasket is made of silica gel.
Further, joint structure two includes fixed sleeve, joint groove one, fixed block two and bolt, fixed sleeve fixed connection is on the lateral wall of check valve body, four fixed block two of fixed connection on the lateral wall of fixed sleeve, four bolts of threaded connection on the fixed block two, two joint groove one have been seted up on the fixed sleeve.
Further, joint structure one includes joint arc board, joint piece, fixed block one and screw hole two, the bottom lateral wall fixed connection joint piece of joint arc board, the joint piece mutually supports with joint groove one and joint groove two, two fixed block ones of both sides fixed connection of joint arc board, two screw hole two have been seted up on the fixed block one, screw hole two and bolt mutually support.
Further, one non-return structure includes connecting rod one, square baffle one, circular arc groove one and square groove one, square groove one is seted up on the top inside wall of check valve body, the inside wall fixed connection connecting rod one of square groove one, rotate on the connecting rod one and connect square baffle one, circular arc groove one is seted up on the bottom inside wall of check valve body.
Further, non return structure two includes square baffle two, connecting rod two, square groove two, circular arc groove two and ring channel one, square groove two and ring channel one are all seted up on the bottom inside wall of check valve body, ring channel one is located the right side of square groove two, the one end of ring channel one is located the below of square groove two, fixed connection connecting rod two on the inside wall of square groove two, rotate on the connecting rod two and connect square baffle two, circular arc groove two is seted up on the top inside wall of check valve body.
Through the above-mentioned embodiment of this application, adopted joint structure one, joint structure two, non return structure one and non return structure two, solved whole replacement and the relatively poor problem of check valve non return effect, obtained can replace ball valve main part or check valve body alone and have the effect of better non return effect.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic overall perspective view of an embodiment of the present application;
FIG. 2 is a schematic diagram of the overall internal structure of an embodiment of the present application;
FIG. 3 is a schematic perspective view of a clamping structure according to an embodiment of the present application;
fig. 4 is a schematic perspective view of a second clamping structure according to an embodiment of the present application.
In the figure: 1. the ball valve comprises a ball valve body, 2, a check valve pipe body, 3, a fixing ring, 4, a first threaded hole, 5, a first clamping structure, 501, a clamping arc plate, 502, a clamping block, 503, a first fixing block, 504, a second threaded hole, 6, a second clamping structure, 601, a fixing sleeve, 602, a first clamping groove, 603, a second fixing block, 604, a bolt, 7, a first non-return structure, 701, a first connecting rod, 702, a first square baffle, 703, a first arc groove, 704, a first square groove, 8, a second non-return structure, 801, a second square baffle, 802, a second connecting rod, 803, a second square groove, 804, a second arc groove, 805, a first annular groove, 9, a sealing gasket, 10, a second annular groove, 11, an annular convex block, 12 and a second clamping groove.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The combination valve of the present embodiment may be applied to an oil pipeline, for example, the following oil pipeline is provided in the present embodiment, and the combination valve of the present embodiment may be used for the following oil pipeline.
A petroleum pipeline comprises an inner pipe and an outer pipe sleeved outside the inner pipe, wherein an inner anticorrosive layer, an insulating flame-retardant layer, a heat-insulating layer, an insulating rubber layer and an outer anticorrosive layer are sequentially arranged between the inner pipe and the outer pipe;
the inner wall of the inner pipe is provided with a spiral groove extending along the axial direction of the inner pipe; an electric heating wire which is axially parallel to the inner pipe is embedded in the heat preservation layer, and the length of the electric heating wire is the same as that of the inner pipe; an insulating sleeve is arranged on the outer surface of the outer pipe; the insulating sleeve is communicated with the outer pipe and the outer wall of the heat preservation layer, a heating wire power socket is arranged on a pipe orifice at one end of the outer pipe, and two ends of the heating wire are electrically connected with the heating wire power socket through the insulating sleeve; a plurality of elastic gaskets are arranged between the insulating rubber layer and the outer anticorrosive layer, and the elastic gaskets are sleeved outside the insulating rubber layer; EPE material layers are filled between the elastic gaskets and the outer anti-corrosion layer; 16 reinforcing ribs are uniformly arranged between the outer pipe and the outer anticorrosive layer, and the cross section of each reinforcing rib is M-shaped; and a waterproof layer is sprayed outside the outer pipe.
The heat-insulating layer is made of heat-insulating materials.
The insulating sleeve is internally provided with two insulator sleeves, and two ends of the electric heating wire respectively penetrate through the two insulator sleeves.
At least one heating wire is arranged, and at least one pair of insulator sleeves is arranged in the insulating sleeves.
The insulating flame-retardant layer is made of flame-retardant polyvinyl chloride.
And the outer surface of the heat-insulating layer is coated with a flame-retardant layer.
The power supply is plugged in the electric heating wire power socket, so that the inner pipe can be heated, the spiral groove is formed in the inner wall of the inner pipe, the phenomenon of retention and adhesion cannot occur in the petroleum conveying process, and the petroleum can generate larger impulsive force through the spiral groove in the flowing process, so that the flowing is more smooth.
The petroleum pipeline has the advantages that the petroleum pipeline has the anticorrosion and waterproof performance, the electric heating wire is arranged in the heat insulation layer, the service life is prolonged, the cost is saved, the structure is stable, and the heat insulation effect is good; the insulating flame-retardant layer is arranged to prevent electric sparks from breaking the unreal insulating layer and the inner anticorrosive layer when the heating wire is heated or fused; the use safety of the pipeline is enhanced; the insulating rubber layer and the elastic gasket are arranged, so that the petroleum pipeline has good pressure resistance and is not easy to damage, and the safety is improved. The section of the reinforcing rib is M-shaped, so that a stable triangle is formed between the reinforcing rib and the outer anti-corrosion layer and between the outer anti-corrosion layer and the pipe wall between the outer pipe and the outer pipe, and the stability of the structure of the reinforcing rib is further enhanced; two layers of anticorrosive coatings are arranged between the inner cylinder and the outer cylinder, so that the anticorrosive performance of the pipeline is greatly improved.
The arrangement of the insulating sleeves improves the insulating property of the pipeline, and the arrangement of the two insulator sleeves ensures that the two ends of the heating wire are separated to enhance the insulating property; at least one electric heating wire is arranged, so that the heating effect is enhanced; the outer surface of the warm layer is coated with the flame-retardant layer, so that the use safety of the pipeline is further improved.
Of course, the present embodiment can be used for petroleum pipelines with other structures. The description is omitted, and the combined valve according to the embodiment of the present application is described below.
Referring to fig. 1-4, a sealing combination valve convenient for maintenance includes a ball valve body 1, a check valve body 2, a first clamping structure 5, a second clamping structure 6, a first check structure 7, and a second check structure 8, the outer side walls of the ball valve main body 1 and the check valve pipe body 2 are fixedly connected with a fixing ring 3, a plurality of threaded holes I4 are arranged on the fixing ring 3 at equal intervals, the ball valve main body 1 and the check valve pipe body 2 are connected through a first clamping structure 5 and a second clamping structure 6, the top and the bottom of the ball valve body 1 are provided with two clamping grooves II 12, the left side of the ball valve body 1 is provided with an annular groove II 10, the inside of check valve body 2 is provided with non return structure 7 and non return structure two 8, the right side fixed connection annular lug 11 of check valve body 2, the sealed pad 9 of lateral wall fixed connection of annular lug 11.
Utilize joint structure one and joint structure two 6 to make check valve body 2 and ball valve main part 1 separation, the check valve body 2 or ball valve main part 1 alone of being convenient for avoid carrying out whole replacement, make the maintenance cost higher, utilize non return structure one 7 and non return structure two 8 to prevent the liquid backward flow for the check valve has better non return effect.
The sealing gasket 9 is made of silica gel, and the sealing gasket 9 can enable the joint of the ball valve body 1 and the check valve pipe body 2 to have a better sealing effect.
Two 6 joint structures include fixed sleeve 601, joint groove one 602, two fixed blocks 603 and bolt 604, fixed sleeve 601 fixed connection is on the lateral wall of check valve body 2, two fixed block 603 of fixed connection on fixed sleeve 601's the lateral wall, four bolts 604 of threaded connection on two fixed blocks 603, two joint groove one 602 have been seted up on fixed sleeve 601, and fixed sleeve 601 covers in ball valve main part 1 and 2 junctions of check valve body, can consolidate the junction.
The check structure 7 comprises a first connecting rod 701, a first square baffle 702, a first arc groove 703 and a first square groove 704, the first square groove 704 is arranged on the inner side wall of the top of the check valve pipe body 2, the first inner side wall fixed connection connecting rod 701 of the first square groove 704 is connected with the first square baffle 702 in a rotating mode on the first connecting rod 701, the first arc groove 703 is arranged on the inner side wall of the bottom of the check valve pipe body 2, when liquid passes through the check valve pipe body 2, the first square baffle 702 rotates upwards under the impact force of the liquid, the liquid can circulate, and when the liquid is prevented from flowing backwards, the first square baffle 702 blocks the channel of the check valve pipe body 2 in a downward rotating mode under the action of self gravity.
The second check structure 8 comprises a second square baffle 801, a second connecting rod 802, a second square groove 803, a second arc groove 804 and a first annular groove 805, the second square groove 803 and the first annular groove 805 are all arranged on the inner side wall of the bottom of the check valve tube body 2, the first annular groove 805 is located on the right side of the second square groove 803, one end of the first annular groove 805 is located below the second square groove 803, the second connecting rod 802 is fixedly connected to the inner side wall of the second square groove 803, the second connecting rod 802 is rotatably connected to the second square baffle 801, the second arc groove 804 is arranged on the inner side wall of the top of the check valve tube body 2, the second square baffle 801 is located in the second square groove 803 under the action of self gravity, liquid can flow, and when backflow is prevented, the second square baffle 801 rotates upwards under the impact of the liquid in the first annular groove 805, and the check valve tube body 2 passes through.
When the check valve is used, when liquid passes through the check valve body 2, the first square baffle 702 rotates upwards under the impact force of the liquid, the second square baffle 801 is positioned in the second square groove 803 under the action of self gravity, the liquid can circulate, when the check is carried out, the liquid flows backwards along the check valve body 2, when the liquid passes through the first annular groove 805, a part of the liquid enters the first annular groove 805 and then flows out from the other end, the second square baffle 801 rotates upwards under the impact of the liquid in the first annular groove 805 to block a channel of the check valve body 2 and prevent the liquid from flowing backwards, the first square baffle 702 rotates downwards under the action of self gravity to block the channel of the check valve body 2 and further prevent the liquid from flowing backwards, so that the check valve has better check function, when maintenance and replacement are needed, the bolt 604 can be screwed, the bolt 604 is taken out from the second threaded hole 504, the clamping block 502 is pulled out from the first clamping groove 602 and the second clamping groove 12, at pulling check valve body 2, make check valve body 2 and ball valve main part 1 separation, be convenient for carry on alone check valve body 2 or ball valve main part 1 and replacement, avoid carrying out whole replacement, make the maintenance cost higher.
The application has the advantages that:
1. this application is rational in infrastructure, and liquid flows back along the check valve body, and when the ring channel, partly liquid gets into ring channel one, flows from the other end again, and square baffle two upwards rotates under the impact of liquid in ring channel one, blocks check valve body passageway, prevents the liquid backward flow, and square baffle one is under the effect of self gravity, and the downward rotation blocks check valve body passageway, further prevents the liquid backward flow for the check valve has better non return effect.
2. This application is rational in infrastructure, twists the bolt, takes out the bolt from screw hole two, extracts the joint piece from joint groove one and joint groove two, at the pulling check valve body, makes check valve body and ball valve main part separation, and the independent check valve body or ball valve main part of being convenient for avoids carrying out whole replacement, makes the maintenance cost higher.
The modules referred to are prior art and are fully implemented by those skilled in the art, and it is not necessary to state that the present invention is not directed to software and process improvements.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (6)
1. The utility model provides a sealed combination formula valve convenient to maintenance which characterized in that: the ball valve comprises a ball valve main body (1), a check valve pipe body (2), a first clamping structure (5), a second clamping structure (6), a first check structure (7) and a second check structure (8), wherein the outer side wall of the ball valve main body (1) is fixedly connected with a fixing ring (3) of the check valve pipe body (2), the fixing ring (3) is equidistantly provided with a plurality of threaded holes (4), the ball valve main body (1) and the check valve pipe body (2) are connected with the clamping structure (5) and the clamping structure (6) through the clamping structure (5), two clamping grooves (12) are formed in the top and the bottom of the ball valve main body (1), a second annular groove (10) is formed in the left side of the ball valve main body (1), the check structure (7) and the check structure (8) are arranged inside the check valve pipe body (2), and an annular convex block (11) is fixedly connected to the right side of the check valve pipe body (2), the outer side wall of the annular convex block (11) is fixedly connected with a sealing gasket (9).
2. A valve of the sealed combination type for easy maintenance according to claim 1, wherein: the sealing gasket (9) is made of silica gel.
3. A valve of the sealed combination type for easy maintenance according to claim 1, wherein: joint structure two (6) are including fixed sleeve (601), joint groove one (602), two fixed block (603) and bolt (604), fixed sleeve (601) fixed connection is on the lateral wall of check valve body (2), four fixed block two (603) of fixed connection on the lateral wall of fixed sleeve (601), four bolt (604) of threaded connection on two fixed block (603), two joint groove one (602) have been seted up on fixed sleeve (601).
4. A valve of the sealed combination type for easy maintenance according to claim 1, wherein: joint structure (5) are including joint arc board (501), joint piece (502), fixed block one (503) and screw hole two (504), bottom lateral wall fixed connection joint piece (502) of joint arc board (501), joint piece (502) mutually support with joint groove one (602) and joint groove two (12), two fixed block one (503) of both sides fixed connection of joint arc board (501), two screw hole two (504) have been seted up on fixed block one (503), screw hole two (504) and bolt (604) mutually support.
5. A valve of the sealed combination type for easy maintenance according to claim 1, wherein: check structure one (7) includes connecting rod one (701), square baffle one (702), arc groove one (703) and square groove one (704), square groove one (704) is seted up on the top inside wall of check valve body (2), the inside wall fixed connection connecting rod one (701) of square groove one (704), rotate on connecting rod one (701) and connect square baffle one (702), arc groove one (703) is seted up on the bottom inside wall of check valve body (2).
6. A valve of the sealed combination type for easy maintenance according to claim 1, wherein: check structure two (8) are including square baffle two (801), connecting rod two (802), square groove two (803), circular arc groove two (804) and ring channel one (805), square groove two (803) and ring channel one (805) are all seted up on the bottom inside wall of check valve body (2), ring channel one (805) are located the right side of square groove two (803), the one end of ring channel one (805) is located the below of square groove two (803), fixed connection connecting rod two (802) on the inside wall of square groove two (803), rotate on connecting rod two (802) and connect square baffle two (801), circular arc groove two (804) are seted up on the top inside wall of check valve body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121855411.0U CN215487845U (en) | 2021-08-09 | 2021-08-09 | Sealed combination formula valve convenient to maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121855411.0U CN215487845U (en) | 2021-08-09 | 2021-08-09 | Sealed combination formula valve convenient to maintenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215487845U true CN215487845U (en) | 2022-01-11 |
Family
ID=79757677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121855411.0U Expired - Fee Related CN215487845U (en) | 2021-08-09 | 2021-08-09 | Sealed combination formula valve convenient to maintenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215487845U (en) |
-
2021
- 2021-08-09 CN CN202121855411.0U patent/CN215487845U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220111 |