CN218843262U - Intelligent sterilizing and deodorizing system for toilet - Google Patents
Intelligent sterilizing and deodorizing system for toilet Download PDFInfo
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- CN218843262U CN218843262U CN202223452714.5U CN202223452714U CN218843262U CN 218843262 U CN218843262 U CN 218843262U CN 202223452714 U CN202223452714 U CN 202223452714U CN 218843262 U CN218843262 U CN 218843262U
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- ozone
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- storage tank
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- 230000001877 deodorizing effect Effects 0.000 title claims description 8
- 230000001954 sterilising effect Effects 0.000 title abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 143
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical group [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 107
- 239000007788 liquid Substances 0.000 claims abstract description 41
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000001301 oxygen Substances 0.000 claims abstract description 39
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 39
- 239000007789 gas Substances 0.000 claims abstract description 29
- 238000004332 deodorization Methods 0.000 claims abstract description 8
- 239000002781 deodorant agent Substances 0.000 claims abstract description 3
- 238000012544 monitoring process Methods 0.000 claims description 17
- 238000005273 aeration Methods 0.000 claims description 7
- 238000005485 electric heating Methods 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 3
- 230000000249 desinfective effect Effects 0.000 claims 6
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 16
- 241000894006 Bacteria Species 0.000 abstract description 8
- 241000700605 Viruses Species 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009395 breeding Methods 0.000 abstract description 2
- 230000001488 breeding effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- 210000002700 urine Anatomy 0.000 abstract description 2
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 206010011409 Cross infection Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 235000013355 food flavoring agent Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The utility model discloses a lavatory is with intelligent deodorization system that disappears, including PLC intelligent control module, connect and be used for eliminating the deodorant constant voltage accuse water subassembly to it at the lavatory pipeline, still including the ozone unit that is used for making ozone water and carries to constant voltage accuse water subassembly, the ozone unit generates the liquid reserve tank including oxygenerator, high pressure ionization generator, automatic water supply device and the ozone water that is used for making oxygen, wherein: and the high-voltage ionization generator is connected to the oxygen outlet end of the oxygen generator and is used for performing high-voltage ionization by utilizing the oxygen to obtain ozone gas. In the utility model, the strong oxidizing sterilization of ozone is utilized to directly sterilize and disinfect the excrement and urine pool, thereby inhibiting the breeding of virus and bacteria at the source; meanwhile, the integral environment of the toilet can be improved, the toilet is suitable for places with large pedestrian flow, such as stations, hospitals, parks and the like, the installation is convenient and fast, manual intervention is not needed, and the disinfection and sterilization effects are obvious.
Description
Technical Field
The utility model relates to a disinfection and sterilization technical field, concretely relates to lavatory is with intelligent deodorization system that disappears.
Background
Studies have shown that the number of bacteria and viruses on the inner wall of a toilet just flushed is as high as 10 ten thousand, while during toilet flushing the bacteria are carried by the cyclone to a height of 6 meters, floating for several hours. As the personnel in stations, hospitals and parks are centralized, the flow of people is large, the utilization rate of the toilet is high, a large amount of bacteria and viruses are suspended in the toilet environment of the stations, the immunity of people is reduced due to the manton of boats and vehicles, the risk of cross infection is increased in the environment, various diseases are more easily caused, and particularly, the toilet disinfection is more important in epidemic situations.
However, toilets in some stations, hospitals and parks are only cleaned simply and odor of the toilets is covered by flavoring agents, and no disinfection is performed, and toilets in other stations can be disinfected only manually, so that intelligent real-time disinfection cannot be performed, manpower is consumed, and the effect is not good;
as shown in chinese patent publication No. CN113975438a, this document discloses a toilet disinfection apparatus and disinfection method, which can kill bacteria and viruses in space, but is not suitable for station toilets with large flow of people, and the source bacteria and viruses in the toilet bowl cannot be eliminated, so the disinfection range is limited, and the disinfection is not thorough.
SUMMERY OF THE UTILITY MODEL
The utility model provides a lavatory is with intelligence deodorization system that disappears to the bacterial virus of source has no way to eliminate in solving the closestool, disappears and kills the limited problem of scope.
The utility model adopts the technical scheme as follows: the utility model provides a lavatory is with intelligence deodorization system that disappears, includes PLC intelligent control module, connects and is used for eliminating its deodorant constant voltage accuse water component in the lavatory pipeline, still including being used for making ozone water and carrying to the ozone unit of constant voltage accuse water component, the ozone unit generates the liquid reserve tank including oxygenerator, high-pressure ionization generator, automatic water supply device and the ozone water that is used for making oxygen, wherein:
the high-voltage ionization generator is connected to the oxygen outlet end of the oxygen generator and is used for carrying out high-voltage ionization by using the oxygen to obtain ozone gas, and a solenoid valve and a flowmeter which are electrically connected with the PLC intelligent control module are arranged on a pipeline between the oxygen generator and the high-voltage ionization generator;
the automatic water replenishing device is used for replenishing water into the ozone water generation liquid storage tank;
the ozone water generation liquid storage tank is used for mixing ozone gas and water to form ozone water and storing the ozone water, the water outlet end of the ozone water generation liquid storage tank is connected with the water inlet end of the constant-pressure water control assembly, and a one-way valve is arranged on a pipeline between the high-pressure ionization generator and the ozone water generation liquid storage tank.
Furthermore, the system also comprises an environment monitoring module used for collecting environmental parameter data in the toilet pipeline, the environment monitoring module comprises an ozone sensor, the model is ZX4011-03, the model is a six-in-one sensor model of a temperature and humidity sensor, a VOC sensor, an ammonia gas sensor, a hydrogen sulfide sensor and an odor sensor is ZX4011-L, and the output end of the environment monitoring module is connected with the input end of the PLC intelligent control module.
Furthermore, a high water level sensor and a low water level sensor which are electrically connected with the PLC intelligent control module and used for sensing the water level of the ozone water are arranged in the ozone water generation liquid storage tank.
Further, the oxygen inlet end of the ozone water generation liquid storage tank is provided with at least one group of aeration heads.
Furthermore, the side wall of the top end of the ozone water generation liquid storage tank is communicated with a gas overflow clearing device through an overflow hole, and an electric heating plate is fixedly arranged inside the gas overflow clearing device.
Furthermore, the system also comprises a system cabinet for assembling the PLC intelligent control module, the oxygen generator, the high-voltage ionization generator, the gas overflow clearing device, the ozone water generation liquid storage tank and the constant-pressure water control assembly.
Furthermore, the constant-pressure water control assembly comprises a booster pump, a ball valve, a one-way valve, a pressure tank, an air bag and a pipeline.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
the utility model discloses in, through the oxygenerator, high-pressure ionization generator, the ozone water generates the liquid reserve tank, gaseous excessive clearing device's design, the strong oxidizing nature sterilization mode that utilizes ozone is direct disinfects to the stool and urine, replace the normal water and wash the mode of big urinal, make and to restrain breeding of virus and bacterium in the source, and also can improve the whole environment in lavatory in sterile, play the effect that the bacterium in the air was exterminateed in the deodorization, thereby public safety has been guaranteed, and is applicable to the station, the big place of the flow of people of hospital and park etc., it is convenient to have the installation, need not artificial intervention, the characteristics that disinfection effect is showing.
Drawings
FIG. 1 is a schematic operation block diagram of the system of the present invention;
FIG. 2 is a connection block diagram of the ozone unit, the environment monitoring module and the PLC intelligent control module of the utility model;
fig. 3 is a schematic diagram of the structure of the system cabinet of the present invention.
The labels in the figure are: 1. an environment monitoring module; 2. an ozone unit; 21. a high voltage ionization generator; 22. an oxygen generator; 23. an electromagnetic valve; 24. a one-way valve; 25. an ozone water generation liquid storage tank; 251. a high water level sensor; 252. a low water level sensor; 3. a PLC intelligent control module; 4. an automatic water replenishing device; 5. a constant pressure water control assembly; 6. a gas overflow removal device; 61. an electrical heating plate; 7. a flow meter; 8. and a system cabinet.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Examples
With reference to fig. 1-3, an intelligent sterilization and deodorization system for toilet comprises a PLC intelligent control module 3, a constant pressure water control assembly 5 connected to toilet pipeline for sterilization and deodorization, and an ozone unit 2 for producing ozone water and delivering to the constant pressure water control assembly 5, wherein the ozone unit 2 comprises an oxygen generator 22 for producing oxygen, a high pressure ionization generator 21, an automatic water supply device 4 and an ozone water generation liquid storage tank 25, wherein: a high-voltage ionization generator 21 connected to the oxygen outlet of the oxygen generator 22 and used for performing high-voltage ionization by using oxygen to obtain ozone gas, wherein a solenoid valve 23 and a flowmeter 7 electrically connected with the PLC intelligent control module 3 are arranged on a pipeline between the oxygen generator 22 and the high-voltage ionization generator 21; an automatic water replenishing device 4 for replenishing water to the ozone water producing liquid storage tank 25; an ozone water generation liquid storage tank 25 for mixing ozone gas and water to form ozone water and storing the ozone water, wherein the water outlet end of the ozone water generation liquid storage tank 25 is connected with the water inlet end of the constant-pressure water control assembly 5, a one-way valve 24 is arranged on a pipeline between the high-pressure ionization generator 21 and the ozone water generation liquid storage tank 25, preferably, the model of the oxygen generator 22 is JZ-100, the model of the PLC intelligent control module 3 is S7-300, the model of the high-pressure ionization generator 21 is KS-20, the model of the flow meter 7 is JSH-4WB, and the model of the electromagnetic valve 23 is 2S15; the PLC intelligent control module 3 is used for controlling the automatic work of the whole system, automatic water supplement, ozone gas preparation, ozone water generation, environment monitoring, environment data display, overflowed gas detection, ozone overproof shutdown and water channel pressure maintenance in toilet pipelines to generate trigger control signals.
As a preferred embodiment, the system further comprises an environment monitoring module 1 for collecting environmental parameter data in the toilet pipeline, the environment monitoring module 1 comprises an ozone sensor with the model of ZX0411-03, a temperature and humidity sensor, a VOC sensor, an ammonia gas sensor, an odor sensor and a hydrogen sulfide sensor, the model of ZX0411-L is six, the output end of each sensor is connected with the input end of the PLC intelligent control module 3, the environment monitoring module 1 is used for detecting whether ozone in the environment exceeds the standard or not and detecting whether the odor concentration in the environment is too high or not, when the ozone concentration exceeds the standard, a feedback signal is sent to the PLC intelligent control module 3, the PLC intelligent control module 3 controls the oxygen generator 22 and the high-voltage ionization generator 21 to be out of work, and when the ozone concentration is at a normal level, the system is normally started.
As a preferred embodiment, as shown in fig. 1, a high water level sensor 251 and a low water level sensor 252 electrically connected to the PLC intelligent control module 3 and sensing the water level of the ozonated water are provided in the ozonated water generation tank 25, and a temperature control instrument is provided on the ozonated water generation tank 25; the oxygen inlet end of the ozone water generation liquid storage tank 25 is provided with at least one group of aeration heads, and the high water level sensor 251 and the low water level sensor 252 are used for monitoring the water level in the ozone water generation liquid storage tank 25, and the optimal type is GDSL552; the constant-pressure water control assembly 5 comprises a booster pump, a ball valve and a pipeline, wherein the preferred model of the booster pump is SWP-02A; the constant pressure water control component 5 inputs the prepared ozone water into the pipeline of the toilet, the ozone generated in the oxygenerator 22 enters the aeration head and is fully mixed with water to generate the ozone water, at the moment, the ball valve in the constant pressure water control component 5 ensures that only the ozone water is in the pipeline of the toilet, and the constant pressure water control component provides a constant pressure for the pipeline of the toilet through the composition of the booster pump, the ball valve and the related pipeline, the pressure can be set according to the field requirement, and the constant pressure ozone water is ensured in the pipeline of the toilet.
Referring to fig. 1, as a preferred embodiment, the top side wall of the ozone water generation tank 25 is communicated with a gas overflow removing device 6 through an overflow hole, an electric heating plate 61 is fixedly arranged inside the gas overflow removing device 6, and the preferred model of the electric heating plate 61 is YKM-400C; after ozone generated in the oxygen generator 22 enters the aeration head and is fully mixed with water to generate ozone water, the ozone water generates gaseous ozone gas and liquid ozone water in the liquid storage tank 25, the ozone gas is unstable and overflows, the ozone gas concentration can be monitored in real time by utilizing the environment monitoring module 1 in the system, when the concentration is too high, the PLC intelligent control module 3 controls and starts the electric heating plate 61 to burn and decompose the ozone at the high temperature of about 270 ℃, and therefore the ozone gas overflowing from the ozone water generation liquid storage tank 25 is eliminated.
It should be noted that: with reference to fig. 1, after the system is started, the set environment monitoring module 1 is used to monitor the surrounding environment in real time, relevant parameters are fed back to the PLC intelligent control module 3, and relevant environment data are displayed in the environment monitoring module 1; when the ozone gas in the air exceeds the standard (more than or equal to 0.15 PPM), the equipment is stopped, and when the concentration of the ozone in the air is less than 0.15, the equipment normally operates. After the oxygen generator 22 is started, the oxygen generator 22 produces high-purity oxygen, the oxygen flows through the flow meter 7, and the amount of the oxygen entering the high-pressure ionization generator 21 can be controlled by adjusting the flow meter 7. Wherein, the electromagnetic valve 23 is arranged for controlling the oxygen purity of the oxygen generator 22 at the beginning;
after the oxygen generator 22 operates for a period of time, the PLC intelligent control module 3 controls to open the electromagnetic valve 23, oxygen enters the high-pressure ionization generator 21 through a pipeline, high-concentration ozone is prepared under high-frequency high-pressure ionization, and then the oxygen enters the ozone water generation liquid storage tank 25 from the gas path through the one-way valve 24 to prepare ozone water; the two groups of aeration heads with the radius are arranged, and ozone gas is changed into tiny bubbles through the aeration heads and is fully contacted with water to form ozone water; the ozone water generation liquid storage tank 25 is provided with a high water level sensor 251 and a low water level sensor 252, when the low water level sensor 252 detects a low water level signal, the PLC intelligent control module 3 controls the automatic water replenishing device 4 to start water replenishing, after the high water level sensor 251 feeds back a signal, the automatic water replenishing device 4 stops water replenishing, and the water replenishing process is completed; in the water replenishing process, gaseous ozone in the ozone water generation liquid storage tank 25 is unstable and can overflow from the ozone water generation liquid storage tank 25, under the condition that the ozone water generation liquid storage tank 25 is sealed, a hole is formed at a position above the high water level of the ozone water generation liquid storage tank 25, ozone gas is introduced into the gas overflow removal device 6, and when the environment monitoring module 1 detects that the ozone concentration is too high, the PLC intelligent control module 3 controls and starts the electric heating plate 61 to burn and decompose the ozone at the high temperature of about 270 ℃, so that the ozone gas overflowing from the ozone water generation liquid storage tank 25 is removed; the prepared ozone water enters the constant pressure water control assembly 5 through a water outlet of the ozone water generation liquid storage tank 25, and at the moment, a water outlet of the booster pump is connected to a water inlet pipeline of the urinal through a pipeline and a ball valve, so that ozone water with constant pressure is provided for a toilet pipeline, and the urinal is sterilized and disinfected; through installing temperature sensor in the bottom that ozone water generated the liquid reserve tank 25 side, temperature control instrument is used for showing temperature sensor's temperature, then temperature sensor gives PLC intelligent control module 3 with the temperature transmission of the inside that ozone water generated liquid reserve tank 25, and when the temperature was less than 0 ℃, PLC intelligent control module 3 started the heater of water tank bottom, guarantees that equipment can normal operating being less than 0 ℃.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The utility model provides a lavatory is with intelligent deodorization system that disappears, includes PLC intelligent control module (3), connects and be used for going on to it to disappear deodorant constant voltage accuse water set (5) in lavatory pipeline, its characterized in that, still including ozone unit (2) that are used for making ozone water and carry to constant voltage accuse water set (5), ozone unit (2) generate liquid reserve tank (25) including oxygenerator (22), high pressure ionization generator (21), automatic water supply device (4) and the ozone water that is used for making oxygen, wherein:
the high-voltage ionization generator (21) is connected to the oxygen outlet end of the oxygen generator (22) and is used for carrying out high-voltage ionization by utilizing the oxygen to obtain ozone gas, and an electromagnetic valve (23) and a flow meter (7) which are electrically connected with the PLC intelligent control module (3) are arranged on a pipeline between the oxygen generator (22) and the high-voltage ionization generator (21);
an automatic water replenishing device (4) for replenishing water to the ozone water producing liquid storage tank (25);
the ozone water generation liquid storage tank (25) is used for mixing ozone gas and water to form ozone water and storing the ozone water, the water outlet end of the ozone water generation liquid storage tank is connected with the water inlet end of the constant-pressure water control assembly (5), and a one-way valve (24) is arranged on a pipeline between the high-pressure ionization generator (21) and the ozone water generation liquid storage tank (25).
2. The intelligent toilet disinfecting and deodorizing system as claimed in claim 1, wherein: the system further comprises an environment monitoring module used for collecting environmental parameter data in the toilet pipeline, the environment monitoring module comprises an ozone sensor, a temperature and humidity sensor, a VOC sensor, an ammonia gas sensor and an odor gas sensor, and the output end of the environment monitoring module is connected with the input end of the PLC intelligent control module (3).
3. The intelligent toilet disinfecting and deodorizing system as claimed in claim 1, wherein: a high water level sensor (251) and a low water level sensor (252) which are electrically connected with the PLC intelligent control module (3) and used for sensing the water level of the ozone water are arranged in the ozone water generation liquid storage tank (25).
4. The intelligent disinfecting and deodorizing system for toilets according to claim 1, wherein: the oxygen inlet end of the ozone water generation liquid storage tank (25) is provided with at least one group of aeration heads.
5. The intelligent toilet disinfecting and deodorizing system as claimed in claim 1, wherein: the side wall of the top end of the ozone water generation liquid storage tank (25) is communicated with a gas overflow clearing device (6) through an overflow hole, and an electric heating plate (61) is fixedly arranged inside the gas overflow clearing device (6).
6. The intelligent toilet disinfecting and deodorizing system as claimed in claim 1, wherein: the system also comprises a system cabinet (8) used for assembling the PLC intelligent control module (3), the oxygen generator (22), the high-pressure ionization generator (21), the gas overflow clearing device (6), the ozone water generation liquid storage tank (25) and the constant-pressure water control assembly (5).
7. The intelligent disinfecting and deodorizing system for toilets according to claim 1, wherein: the constant-pressure water control assembly (5) comprises a booster pump, a ball valve, a one-way valve, a pressure tank, an air bag and a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223452714.5U CN218843262U (en) | 2022-12-23 | 2022-12-23 | Intelligent sterilizing and deodorizing system for toilet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223452714.5U CN218843262U (en) | 2022-12-23 | 2022-12-23 | Intelligent sterilizing and deodorizing system for toilet |
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| Publication Number | Publication Date |
|---|---|
| CN218843262U true CN218843262U (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223452714.5U Active CN218843262U (en) | 2022-12-23 | 2022-12-23 | Intelligent sterilizing and deodorizing system for toilet |
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| Country | Link |
|---|---|
| CN (1) | CN218843262U (en) |
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- 2022-12-23 CN CN202223452714.5U patent/CN218843262U/en active Active
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Effective date of registration: 20240424 Address after: Room 301-2, 3rd Floor, Building 1, No. 8 Hongda North Road, Beijing Economic and Technological Development Zone, Daxing District, Beijing, 102600 (Yizhuang Cluster, High end Industrial Zone, Beijing Pilot Free Trade Zone) Patentee after: Jinshihongyuan (Beijing) Technology Co.,Ltd. Country or region after: China Address before: 044602 No. 001 Kangle Lane, Wuyi Village, Huanghe North Road, Fenglingdu Town, Ruicheng County, Yuncheng City, Shanxi Province Patentee before: Chen Jiangdi Country or region before: China Patentee before: Xu Genying Patentee before: Wang Yi |