CN211006893U - Drainage device preventing sewage from flowing backwards - Google Patents
Drainage device preventing sewage from flowing backwards Download PDFInfo
- Publication number
- CN211006893U CN211006893U CN201921474345.5U CN201921474345U CN211006893U CN 211006893 U CN211006893 U CN 211006893U CN 201921474345 U CN201921474345 U CN 201921474345U CN 211006893 U CN211006893 U CN 211006893U
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- drainage
- sewage
- pipe
- tube
- flow
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- 239000010865 sewage Substances 0.000 title claims abstract description 127
- 238000004332 deodorization Methods 0.000 claims description 15
- 230000005484 gravity Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 21
- 239000002351 wastewater Substances 0.000 abstract description 17
- 239000002781 deodorant agent Substances 0.000 abstract description 12
- 230000003373 anti-fouling effect Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 230000008439 repair process Effects 0.000 abstract description 5
- 239000006185 dispersion Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 11
- 229920000915 polyvinyl chloride Polymers 0.000 description 11
- 239000004800 polyvinyl chloride Substances 0.000 description 11
- 230000008569 process Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010806 kitchen waste Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of sewage pipe says quick drainage and handles, a drainage device that antifouling water flows backward is disclosed. This drainage device passes through main dirty pipe and drainage equipment's common configuration to set up deodorant drainage tube, not only realized reaching the effect of high-efficient drainage to the dirty waste water in the sewage pipeline, still prevented simultaneously effectively that the dirty foul smell taste in the sewage pipeline from extending main dirty pipe dispersion and getting into in the residence. The arrangement of the alarm device, the control device, the actuator and other parts in the drainage device realizes that the phenomenon can be found at the highest speed after the sewage pipeline flows backwards, the sewage flowing backwards in the sewage pipeline is successfully discharged, the waste rate of the sewage pipeline is obviously reduced, the loss of repair labor force is reduced, and the quality of national life is improved.
Description
Technical Field
The utility model discloses sewage pipe says quick drainage and handles technical field, concretely relates to drainage device of antifouling water flowing backward.
Background
In a common high-rise residence, a plurality of pipelines for discharging daily life sewage are arranged, and the sewage pipelines are uniformly converged into a first-floor sewage reservoir and an underground sewage reservoir from a high-rise building. Meanwhile, because a large amount of blockages always remain in the water tanks of kitchens, toilets and the like in all families at present, the survivors and the blockages can move along with the sewage drainage pipeline along with the sewage, so that the probability of blockage of the sewage drainage pipeline is increased gradually, the phenomenon of overflow (reverse water choking) of the sewage becomes a common problem in life, and meanwhile, the problem that the sewage pipeline is easy to block is also concerned by the vast national people.
However, in the process of daily household life, the problem of overflow of water caused by blockage of a drainage pipeline of kitchen water is inevitable. In general, the citizen will consider that a slight blockage of the sewer pipe is not a problem. However, in practice, once the drainage pipeline is blocked, the drainage overflow (reverse choking) will seriously affect daily life.
At present, the problem that a sewage pipeline is blocked and sewage overflows when the sewage pipeline is blocked is solved, a resident removes the upper half part of the sewage pipeline, removes the part with the hardened pipe wall, and then installs the sewage pipeline back to the original position. The disadvantage of this solution is that it is easy to disassemble and assemble, and a lot of labor and material are consumed in each repair process. When the sewer pipeline is seriously blocked and a resident can not clean the sewer by himself, a professional technician for dredging the sewer can be called to clean the pipeline, but the technician often only cleans the seriously blocked part of the pipeline, and the rest branch pipes are not processed. In addition, the cost for cleaning the blocked part of the conventional pipeline is not low, and the whole pipeline is not completely dredged, so that the drainage pipeline can be blocked and reversely choked after a period of time.
The related technology discloses a drainage pipeline composition structure for preventing kitchen drainage pipeline from overflowing, which comprises a basin, a flange valve, a rubber hose, a flange valve and a PVC (polyvinyl chloride) pipe body, wherein the flange valve is respectively connected with a bottom end opening of the basin and an upper end opening of the rubber hose, a lower end opening of the rubber hose is connected with an upper end opening of the PVC pipe body with the diameter of 50mm through the flange valve, the PVC pipe body sequentially penetrates through a secondary concrete ground and a primary main concrete structure, a bottom opening of the PVC pipe body is communicated with an external drainage network, the length of the PVC pipe body from a place above the secondary concrete ground to a place where the PVC pipe body is thrown is 40cm, and a water flow control valve connected with the PVC pipe body is additionally arranged at a place 250mm above the secondary concrete ground in a place where the PVC. The water flow control valve consists of a water valve control wrench, a water valve control blade and a blade connecting sheet. The water valve control wrench is manually rotated in the right direction, the water valve control blade seals the space in the PVC pipe body, sewage is prevented from flowing back into the PVC pipe body and the rubber hose through the outer drainage net, and the beneficial effect of preventing the drainage pipeline in the kitchen from overflowing is achieved. The structure is that a water flow control valve is additionally arranged in the refitting of the drainage pipeline. When the householder does not use the water for washing food and cooking in the kitchen or goes out, the water flow control valve is closed, thereby preventing the overflow phenomenon of the drainage pipeline of the kitchen. The improvement of this structure only can be used for preventing that drainage pipe from taking place the overflow phenomenon when not producing the dirty waste water in kitchen, and it can't obtain fine solution to preventing drainage pipe backward flow phenomenon and effectual carrying out dual drainage and the exhaust problem simultaneously with dirty waste water, does not be provided with the pollution that deodorant structure is arranged in preventing the dirty smelly smell of sewage pipeline to cause the family environment in this structure simultaneously.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model aims to provide a drainage device for preventing sewage from flowing backwards.
The utility model discloses the technical scheme who adopts does: a drainage device for preventing sewage from flowing backwards comprises a main sewage pipe and drainage equipment, wherein the drainage equipment is arranged on the side surface of the main sewage pipe; the drainage equipment comprises a drainage tube and a deodorization drainage tube, the top end of the deodorization drainage tube is communicated with the drainage tube, and the bottom end of the deodorization drainage tube is communicated with the main sewage tube; an alarm device and a control device are arranged below the communicated part of the deodorization drainage tube and the main sewage pipe, and the alarm device and the control device are respectively connected with a drainage control terminal; an actuator is arranged at the joint of the drainage tube and the main sewage pipe, and the actuator is connected with the control device; the other end of the drainage tube is provided with a check valve which is movably connected with the drainage tube.
Above-mentioned this drainage device of antifouling water flowing backward through the common configuration of main dirty pipe and drainage equipment who provides has still set up deodorant drainage tube simultaneously, and this drainage device has not only realized reaching the effect of high-efficient drainage to the dirty waste water in the sewage pipeline, has still prevented simultaneously effectively that dirty foul smell taste in the sewage pipeline from extending main dirty pipe dispersion and getting into in the residence. The arrangement of the alarm device, the control device, the actuator and other parts in the drainage device realizes that the phenomenon can be found at the highest speed after the sewage pipeline flows backwards, the sewage flowing backwards in the sewage pipeline is successfully discharged, the waste rate of the sewage pipeline is obviously reduced, the loss of repair labor force is reduced, and the quality of national life is improved.
Preferably, the actuator is capable of controlling the opening or closing of the connection of the drain tube and the main sewage pipe.
Preferably, the actuator comprises any one of a solenoid valve, an electric gate valve, an electric ball valve, or an electric butterfly valve.
The executor that uses among this drainage device that the aforesaid provided sets up in the junction of main dirty pipe and drainage tube, and it is used for arousing sewage to flow backward because the pipeline blocks up when main dirty socle end, and the executor is opened, and the drainage tube realizes the intercommunication with main dirty pipe, and then can discharge the device with main dirty tub of top sewage is direct from the drainage tube to when sewage flows backward to the junction, the drainage of sewage is carried out simultaneously with deodorant drainage tube to the drainage tube, reaches the purpose of quick drainage. The utility model discloses in to the use apparatus of executor prescribe a limit to be the function that is arranged in showing the required use of executor in this device to this kind of structural device can reach the best effect on the basis that assembly structure tends to the simplification.
Preferably, the check valve includes any one of a levitated ball check valve, a gravity check valve or a spring type check valve.
The above-mentioned terminal that has set up the check valve at the drainage tube among this drainage device that provides, this check valve is swing joint with the drainage tube terminal, and this check valve is used for guaranteeing that the outer dirty waste water of device can't return to in the drainage tube after dirty waste water passes through drainage tube eduction gear to realized the exhaust unidirectional flow of dirty waste water, accomplished the outer row of smooth drainage of dirty waste water.
Preferably, deodorant drainage tube includes honeycomb duct and flow tube, and the honeycomb duct is connected with flow tube.
Preferably, one end of the flow guide pipe is communicated with the main sewage pipe, and the other end of the flow guide pipe is connected with the bottom end of the flow delivery pipe.
Preferably, the top end of the flow delivery pipe is communicated with the drainage pipe.
Preferably, the included angle between the flow guide pipe and the flow delivery pipe is 45-60 degrees.
The aforesaid provides and has set up deodorant drainage tube among this drainage device, and it is formed through honeycomb duct and flow tube through certain angle connection, and the setting of this angle is used for storing certain liquid in the junction, has prevented effectively that dirty foul smell taste from transmitting to in the house. Simultaneously, this deodorant drainage tube and main dirty pipe between remain the intercommunication state all the time for take place sewage and flow backward when main dirty pipe, can provide the drainage with dirty waste water fast high-efficiently.
Preferably, the alarm means comprises a pressure alarm.
Preferably, the control means comprises a hydraulic control.
The utility model has the advantages that:
the utility model provides a drainage device that antifouling water flows backward, through main dirty pipe and drainage equipment's common configuration among this drainage device that antifouling water flows backward to set up deodorant drainage tube, not only realized reaching the effect of high-efficient drainage to the dirty waste water in the sewage pipeline, still prevented simultaneously effectively that dirty foul smell taste in the sewage pipeline from extending main dirty pipe dispersion and getting into in the residence. The arrangement of the alarm device, the control device, the actuator and other parts in the drainage device realizes that the phenomenon can be found at the highest speed after the sewage pipeline flows backwards, the sewage flowing backwards in the sewage pipeline is successfully discharged, the waste rate of the sewage pipeline is obviously reduced, the loss of repair labor force is reduced, and the quality of national life is improved.
Drawings
Fig. 1 is a schematic structural view of the anti-backflow drainage device in the specific implementation process of the present invention.
In the figure: 1-main sewage pipe; 2-a drainage device; 3-a drainage tube; 4-deodorization drainage tube; 5-an alarm device; 6-a control device; 7-a drainage control terminal; 8-an actuator; 9-a check valve; 10-a flow guide pipe; 11-a flow pipe; 12-a sewage tank; 13-ground layer.
Detailed Description
The present invention will be further explained with reference to the following specific examples. It will be understood by those skilled in the art that the following described embodiments are merely illustrative of the present invention and should not be taken as limiting the scope of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in fig. 1, the drainage device provided in one embodiment of the present invention includes a main sewage pipe 1 and a drainage device 2, wherein the drainage device 2 is disposed on the side of the main sewage pipe 1. Set up drainage equipment 2 in the side of main dirty pipe 1, not only be applicable to the laying process of reality, provide very big convenience at the in-process that the constructor specifically set up this drainage device moreover.
The top end part of the main sewage pipe is used for being connected with a sewage pipeline of a high-rise residence with the floor above the first floor, in the specific implementation process, a plurality of pipelines can be arranged and connected around the main sewage pipe and used for receiving a plurality of sewage pipelines such as domestic sewage, kitchen waste sewage or toilets, and sewage in the pipelines flows downstream through the main sewage pipe and enters a sewage tank arranged below the ground floor. Because the conventional main sewage pipe can be provided with corners, the impact force is reduced when sewage flows into the sewage tank, and the use time of the main sewage pipe and the sewage tank is prolonged. Meanwhile, the corner is often used as residual or foreign matters in partial sewage to easily form blockage at the corner, so that a main sewage pipe is blocked, a large amount of sewage cannot smoothly enter a sewage pool, and the sewage flows backward.
The drainage device 2 provided by the embodiment comprises a drainage tube 3 and a deodorization drainage tube 4, wherein the top end of the deodorization drainage tube 4 is communicated with the drainage tube 3, and the bottom end of the deodorization drainage tube 4 is communicated with a main sewage pipe 1; an alarm device 5 and a control device 6 are arranged below the communicated part of the deodorization drainage tube 4 and the main sewage tube 1, and the alarm device 5 and the control device 6 are respectively connected with a drainage control terminal 7; an actuator 8 is arranged at the joint of the drainage tube 3 and the main sewage pipe 1, and the actuator 8 is connected with the control device 6; the other end of the drainage tube 3 is provided with a check valve 9, and the check valve 9 is movably connected with the drainage tube 3. The utility model discloses the alarm device that establishes at the in-process of concrete implementation produces the signal through pressure sensor, later transmits to among the alarm device, and consequently optional pressure alarm ware, more convenient and directly perceived can be used for the alarm device of here simultaneously and not only restrict in pressure alarm ware, and other can produce in the sewage pipeline that data change is conducted signal to alarm simultaneously all belong to the utility model discloses a protection range. The utility model discloses the controlling means that establishes at the in-process of concrete implementation is through pressure sensor production signal, later transmits to controlling means in, consequently can select for use the hydraulic pressure controller, and is more convenient and directly perceived, can be used for the controlling means of here simultaneously and not only restrict in the hydraulic pressure controller, and other can produce in the sewage pipeline that data change simultaneously conducted signal to controller all belong to the utility model discloses a protection range.
The port department that drainage tube 3 and main dirty pipe 1 communicate is equipped with executor 8 for when producing the backward flow in the sewage pipe, sewage pressure increases, touches alarm device 5 after, drainage control terminal 7 can impel executor 8 to open, and drainage tube 3 and main dirty pipe 1 realize the intercommunication to sewage just can begin to carry out the drainage from the part that main dirty pipe is close to the sewage source. The sewage enters the drainage tube and then the check valve is opened by utilizing the impact force and the pressure of the sewage, so that the sewage is discharged out of the drainage device.
Wherein, the actuator 8 comprises any one of an electromagnetic valve, an electric gate valve, an electric ball valve or an electric butterfly valve. The actuator is used for realizing the process that a drainage control terminal arranged outside the device can start and close the device. The utility model discloses what select for use at concrete implementation process is the solenoid valve, and it is the structure that can reach the best effect on the basis that assembly structure tends to the simplification. Regarding the selection of executor, not only limit in the utility model provides a structure, all can have and can accept the instruction and present and open and close all belonging to the utility model discloses a protection scope.
Meanwhile, the deodorization drainage tube 4 is arranged in the device and comprises a drainage tube 10 and a flow delivery tube 11, and the drainage tube 10 is connected with the flow delivery tube 11. The included angle between the draft tube 10 and the flow delivery tube 11 is 45-60 degrees. The utility model discloses to set for deodorant drainage tube, be used for when main dirty pipe normally carries out sewage treatment and emission, can get into partly sewage through the entry of honeycomb duct at honeycomb duct and the junction of flow delivery pipe, later this part sewage can be stored in this region promptly, it is used for realizing when main dirty pipe normally carries out the operation, the foul smell that the effluent water sump volatilizees sends can drift along main dirty pipeline, when setting up the region that partial sewage kept in deodorant drainage device, not only can prevent drifting away of sewage odor effectively, and the device is open structure, also can be used for making partial sewage circulate and the effect of buffering. Simultaneously, this deodorant drainage tube and main dirty pipe between remain the intercommunication state all the time for take place sewage and flow backward when main dirty pipe, can provide the drainage with dirty waste water fast high-efficiently.
The check valve 9 includes any one of a floating ball, a gravity check valve, or a spring check valve.
The movable connection between the check valve and the drainage tube means that the check valve and the drainage tube are fixedly connected by a small area, so that the check valve is always kept at the terminal position of the drainage tube and cannot move along with the outflow of sewage and wastewater.
According to the drainage method of the drainage device for preventing sewage from flowing backwards, when a main sewage pipe 1 is blocked, sewage in the main sewage pipe flows backwards along the main sewage pipe, when the pressure of the sewage flowing backwards on the main sewage pipe 1 exceeds an expected safe pressure range value, an alarm device 5 is triggered, the alarm device 5 transmits a warning signal to a drainage control terminal 7, the drainage control terminal transmits an instruction signal for starting an actuator 8 to a control device 6, the actuator 8 is started, a drainage pipe 3 is communicated with the main sewage pipe 1, and partial sewage and the sewage flowing backwards flow out of the drainage pipe 3 from a check valve 9. The rest part of the sewage flows into the draft tube 10 through the opening of the draft tube 10 of the deodorization drainage tube 4, and then the sewage is conveyed to the drainage tube 3 through the flow delivery tube 11 and flows out of the check valve 9.
The embodiment is provided with a drainage device at one side of the main sewage pipe in the implementation process. The setting user of the drainage equipment can carry out corresponding setting according to the actual conditions of specific use environment, cost, technical personnel and operating personnel.
The utility model provides a drainage device that antifouling water flows backward, through main dirty pipe and drainage equipment's common configuration among this drainage device that antifouling water flows backward to set up deodorant drainage tube, not only realized reaching the effect of high-efficient drainage to the dirty waste water in the sewage pipeline, still prevented simultaneously effectively that dirty foul smell taste in the sewage pipeline from extending main dirty pipe dispersion and getting into in the residence. The arrangement of the alarm device, the control device, the actuator and other parts in the drainage device realizes that the phenomenon can be found at the highest speed after the sewage pipeline flows backwards, the sewage flowing backwards in the sewage pipeline is successfully discharged, the waste rate of the sewage pipeline is obviously reduced, the loss of repair labor force is reduced, and the quality of national life is improved.
The present invention is not limited to the above-mentioned optional embodiments, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art and anyone can obtain various other products under the teaching of the present invention, and any modifications or equivalent replacements can be made to the technical solution of the present invention, and any changes in the shape or structure can be made without departing from the technical solution falling within the scope of the present invention.
Claims (10)
1. The drainage device for preventing sewage from flowing backwards is characterized by comprising a main sewage pipe and drainage equipment, wherein the drainage equipment is arranged on the side surface of the main sewage pipe; the drainage equipment comprises a drainage tube and a deodorization drainage tube, the top end of the deodorization drainage tube is communicated with the drainage tube, and the bottom end of the deodorization drainage tube is communicated with a main sewage tube; an alarm device and a control device are arranged below the communicated part of the deodorization drainage tube and the main sewage pipe, and the alarm device and the control device are respectively connected with a drainage control terminal; an actuator is arranged at the joint of the drainage tube and the main sewage pipe, and the actuator is connected with a control device; the other end of the drainage tube is provided with a check valve which is movably connected with the drainage tube.
2. The drain device according to claim 1, wherein the actuator is capable of controlling the opening or closing of the connection between the drain tube and the main sewer pipe.
3. The drain device according to claim 2, wherein the actuator comprises any one of a solenoid valve, a power gate valve, a power ball valve, or a power butterfly valve.
4. The drain device for preventing sewage backflow according to claim 1, wherein the check valve comprises any one of a ball check valve, a gravity check valve, or a spring check valve.
5. The drainage device for preventing sewage from flowing backward as claimed in claim 1, wherein said drainage tube for preventing sewage from flowing backward comprises a flow guiding tube and a flow delivering tube, said flow guiding tube being connected to said flow delivering tube.
6. The drainage device for preventing sewage from flowing backward as claimed in claim 5, wherein one end of said flow-guiding pipe is connected to the main sewage pipe, and the other end of said flow-guiding pipe is connected to the bottom end of said flow-guiding pipe.
7. The apparatus as claimed in claim 5, wherein the top end of the flow pipe is connected to the drainage pipe.
8. The drainage device for preventing sewage from flowing backward as claimed in claim 5, wherein the angle between said flow-guiding tube and flow-delivering tube is 45-60 °.
9. The drain device according to claim 1, wherein the alarm device comprises a pressure alarm.
10. The apparatus of claim 1, wherein the control device comprises a hydraulic controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921474345.5U CN211006893U (en) | 2019-09-05 | 2019-09-05 | Drainage device preventing sewage from flowing backwards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921474345.5U CN211006893U (en) | 2019-09-05 | 2019-09-05 | Drainage device preventing sewage from flowing backwards |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211006893U true CN211006893U (en) | 2020-07-14 |
Family
ID=71478397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921474345.5U Expired - Fee Related CN211006893U (en) | 2019-09-05 | 2019-09-05 | Drainage device preventing sewage from flowing backwards |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211006893U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453757A (en) * | 2019-09-05 | 2019-11-15 | 汪兴全 | Drainage device and drainage method for preventing backflow of sewage |
-
2019
- 2019-09-05 CN CN201921474345.5U patent/CN211006893U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453757A (en) * | 2019-09-05 | 2019-11-15 | 汪兴全 | Drainage device and drainage method for preventing backflow of sewage |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200714 |