CN206698977U - Afforestation irrigation system - Google Patents
Afforestation irrigation system Download PDFInfo
- Publication number
- CN206698977U CN206698977U CN201720280091.8U CN201720280091U CN206698977U CN 206698977 U CN206698977 U CN 206698977U CN 201720280091 U CN201720280091 U CN 201720280091U CN 206698977 U CN206698977 U CN 206698977U
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- Prior art keywords
- clear water
- pipe
- water
- irrigation system
- electrically controlled
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/12—Technologies relating to agriculture, livestock or agroalimentary industries using renewable energies, e.g. solar water pumping
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Abstract
A kind of afforestation irrigation system of the utility model, including ground, the rainwater-collecting processing pond for being located at below ground, the clear water reserviors being located at more than ground, rainwater-collecting processing pond is connected with clear water reserviors, solar power system, master controller are provided with above described clear water reserviors, solar power system is connected with master controller, and the clear water reserviors are connected with irrigation system；Rainwater-collecting processing pond is made up of collect cavity and filtration treatment chamber, the upper side of the filtration treatment intracavitary filter layer is provided with delivery port, delivery port connects one end of drinking-water pipe, elevator pump is installed on drinking-water pipe, water quality monitoring sensor is installed in water outlet, the other end connection clear water reserviors of drinking-water pipe, connect and are provided with electrically controlled valve A on the drinking-water pipe of clear water reserviors one end.The utility model can environmental protection, electric energy is efficiently provided, realize the treegarden irrigation of energy-conservation form；Rainwater can be voluntarily collected, can also be supplied water by the additional water source of outside clear water filler pipe, play a part of water saving.
Description
Technical field
The utility model belongs to garden afforestation technology field, particularly relates to a kind of afforestation irrigation system.
Background technology
The development and change in gardens typically change with the level of the economic development of country, and economic level is higher, people couple
Requirement in terms of gardens is also higher, and just there is the space of development in gardens；Because green plants can not only purify air, return busy noisy
The city clamored brings the breath of purity, so as to also purify the dirt of soul, has moulded the disposition of people.Current gardens fill
The system of irrigating remains the defects of certain and not enough improves part, such as：（1）Have and filled using the gardens with rainwater recycle processing
Irrigate system and be used for what is irrigated, although this irrigation system serves the recycling of water resource, the effect of water saving；But its
Electrical control automation can not be reached in terms of job control.（2）There is the gardens filling of common no rainwater-collecting processing
Irrigate system.Therefore, it is necessary to which a kind of can integrate the afforestation irrigation system for solving above-mentioned 2 problems.
The content of the invention
The utility model makes up the deficiencies in the prior art aiming above mentioned problem, there is provided system is irrigated in a kind of afforestation
System.
To achieve the above object, the utility model adopts the following technical scheme that.
A kind of afforestation irrigation system of the utility model, including ground, be located at below ground rainwater-collecting processing pond,
The clear water reserviors being located at more than ground, it is characterised in that：Described rainwater-collecting processing pond is connected with clear water reserviors, described clear water reserviors
Top is provided with solar power system, master controller, and the solar power system is connected with master controller, the clear water reserviors
It is connected with irrigation system.
Described rainwater-collecting processing pond is made up of collect cavity and filtration treatment chamber, and the side of described collect cavity, which is provided with, to be led to
Toward the water-supply-pipe in filtration treatment bottom of chamber portion, the filtration treatment intracavitary is provided with orifice filter and filter layer, the water-supply-pipe
Lower discharging tube open height is less than the height of orifice filter, and the filter layer is located above orifice filter；The filtration treatment intracavitary
The upper side of filter layer is provided with delivery port, and delivery port connects one end of drinking-water pipe, elevator pump is provided with drinking-water pipe, is being gone out
Water quality monitoring sensor is installed, the other end of drinking-water pipe connects clear water reserviors, on the drinking-water pipe for connecting clear water reserviors one end at the mouth of a river
Electrically controlled valve A is installed.
Outside clear water filler pipe is also associated with the clear water reserviors, electrical control is installed on the outside clear water filler pipe
Valve B, the clear water reserviors internal upper part are provided with level sensor, and the clear water reserviors bottom side is connected with total outlet pipe, described always to go out
The other end of water pipe connects irrigation system, and booster pump is provided with the total outlet pipe；The irrigation system includes threeway, ground
Outlet pipe, lower discharging tube, spray head, electrically controlled valve C, electrically controlled valve D, current divider, pointed cone formula osmos tube, it is described always to go out
One end of the other end connection threeway of water pipe, the upper end connection ground outlet pipe of threeway, the lower end connection ground lower discharging tube of threeway,
The electrically controlled valve C, electrically controlled valve D be separately mounted to ground outlet pipe, on lower discharging tube, the upper end of ground outlet pipe
Portion connects spray head, and the bottom connection current divider of ground lower discharging tube, the pointed cone formula osmos tube is arranged on current divider, described
The bottom of pointed cone formula osmos tube is provided with soil humidity sensor.
The signal that the soil humidity sensor, water quality monitoring sensor, level sensor connect master controller respectively is defeated
Enter end, the signal output part of the master controller connects elevator pump, booster pump, electrically controlled valve A, electrically controlled valve B, electricity respectively
Gas control valve C, electrically controlled valve D.
As a kind of preferred scheme of the present utility model, the solar power system is by solar panel, solar energy
Controller, battery, inverter composition, the solar panel, controller for solar, battery, inverter are sequentially connected,
The electric quantity output end connection master controller of the inverter.
As another preferred scheme of the present utility model, the master controller uses PLC programmable logic controller (PLC)s.
As another preferred scheme of the present utility model, the master controller is also associated with PC host computers.
As another preferred scheme of the present utility model, the open top of the collect cavity is provided with screen pack.
As another preferred scheme of the present utility model, the filter layer includes three layers, is followed successively by PP cottons from the bottom to top
Layer, active carbon layer, RO counter-infiltration film layers.
As another preferred scheme of the present utility model, the filtration treatment chamber bottom side is provided with sewage draining exit, blowdown
Mouth is connected with sewage pipe, dredge pump is provided with sewage pipe, the dredge pump is connected with master controller.
As another preferred scheme of the present utility model, the pointed cone formula osmos tube is provided with multiple permeability holes.
The beneficial effects of the utility model.
1st, a kind of afforestation irrigation system provided by the utility model, rainwater-collecting processing is recycled combined first
In afforestation irrigation system, secondly soil humidity sensor, water quality monitoring sensor, level sensor, master are combined again
Controller PLC and PC host computer automatically control elevator pump in whole afforestation irrigation system, booster pump, electrical control
Valve A, electrically controlled valve B, electrically controlled valve C, electrically controlled valve D working condition；This practical described solar energy hair simultaneously
Electric system can environmental protection, electric energy is efficiently provided, realize the treegarden irrigation of energy-conservation form；Due to being provided with rainwater-collecting processing
Pond, rainwater can be voluntarily collected, can also be supplied water by the described additional water source of outside clear water filler pipe, play a part of water saving.
2nd, the utility model can be widely applied to the fields such as vegetative coverage, afforestation, and can handle rain by collecting
Water come solve water resources shortage area irrigation problem.
Brief description of the drawings
In order that technical problem, technical scheme and beneficial effect that the utility model solves are more clearly understood, below
With reference to the drawings and the specific embodiments, the utility model is further elaborated.It should be appreciated that tool described herein
Body embodiment only to explain the utility model, is not used to limit the utility model.
Fig. 1 is a kind of overall structure diagram of afforestation irrigation system of the utility model.
Fig. 2 is a kind of electric control theory block diagram of afforestation irrigation system of the utility model.
Fig. 3 is a kind of structural schematic block diagram of the solar power system of afforestation irrigation system of the utility model.
Marked in figure：1 it is rainwater-collecting processing pond, 2 be water-supply-pipe, 3 be collect cavity, 4 be screen pack, 5 is elevator pump, 6
It is electrically controlled valve A for drinking-water pipe, 7,8 be clear water reserviors, 9 be controller for solar, 10 be solar panel, 11 is electric power storage
Pond, 12 be inverter, 13 be master controller, 14 be level sensor, 15 be electrically controlled valve B, 16 be outside clear water filler pipe,
17 it is ground outlet pipe, 18 be electrically controlled valve C, 19 be spray head, 20 be threeway, 21 be ground, 22 is filtration treatment chamber, 23
It is active carbon layer for RO counter-infiltrations film layer, 24,25 be orifice filter, 26 be PP cottons layer, 27 be water quality monitoring sensor, 28 is row
Dirty pump, 29 be sewage pipe, 30 be total outlet pipe, 31 be booster pump, 32 be pointed cone formula osmos tube, 33 be permeability hole, 34 be soil
Humidity sensor, 35 be current divider, 36 be electrically controlled valve D, 37 be ground lower discharging tube.
Embodiment
With reference to shown in accompanying drawing 1,2,3, a kind of afforestation irrigation system of the utility model, including ground 21, it is located at ground
Less than 21 rainwater-collecting processing pond 1, the clear water reserviors 8 for being located at ground more than 21, it is characterised in that：Described rainwater-collecting processing
Pond 1 is connected with clear water reserviors 8, and the described top of clear water reserviors 8 is provided with solar power system, master controller 13, the solar energy
Electricity generation system is connected with master controller 13, and the clear water reserviors 8 are connected with irrigation system.
Described rainwater-collecting processing pond 1 is made up of collect cavity 3 and filtration treatment chamber 22, the side of described collect cavity 3
Provided with the water-supply-pipe 2 towards the bottom of filtration treatment chamber 22, orifice filter 25 and filter layer are installed in the filtration treatment chamber 22,
The lower discharging tube open height of the water-supply-pipe 2 is less than the height of orifice filter 25, and the filter layer is located at the top of orifice filter 25；
The upper side of the internal filtration layer of filtration treatment chamber 22 is provided with delivery port, and delivery port connects one end of drinking-water pipe 6, in drinking-water pipe
Elevator pump 5 is installed on 6, water quality monitoring sensor 27 is installed in water outlet, the other end of drinking-water pipe 6 connects clear water reserviors 8,
Electrically controlled valve A7 is installed on the drinking-water pipe 6 of connection clear water reserviors 8 one end.
Outside clear water filler pipe 16 is also associated with the clear water reserviors 8, electricity is installed on the outside clear water filler pipe 16
Gas control valve B15, the internal upper part of clear water reserviors 8 are provided with level sensor 14, and the bottom side of clear water reserviors 8 is connected with total water outlet
Pipe 30, the other end of the total outlet pipe 30 connect irrigation system, booster pump 31 are provided with the total outlet pipe 30；The filling
Irrigate system include threeway 20, ground outlet pipe 17, lower discharging tube 37, spray head 19, electrically controlled valve C18, electrically controlled valve
D36, current divider 35, pointed cone formula osmos tube 32, the total outlet pipe 30 the other end connection threeway 20 one end, threeway 20 it is upper
End connection ground outlet pipe 17, the lower end connection ground lower discharging tube 37 of threeway 20, the electrically controlled valve C18, electrically controlled valve
D36 be separately mounted to ground outlet pipe 17, on lower discharging tube 37, the upper end connection spray head 19 of ground outlet pipe 17, ground
The bottom connection current divider 35 of lower discharging tube 37, the pointed cone formula osmos tube 32 are arranged on current divider 35, the pointed cone formula
The bottom of osmos tube 32 is provided with soil humidity sensor 34.
The soil humidity sensor 34, water quality monitoring sensor 27, level sensor 14 connect master controller 13 respectively
Signal input part, the signal output part of the master controller 13 connect respectively elevator pump 5, booster pump 31, electrically controlled valve A7,
Electrically controlled valve B15, electrically controlled valve C18, electrically controlled valve D36.
As a kind of embodiment of the present utility model, the solar power system is by solar panel 10, solar energy
Controller 9, battery 11, inverter 12 form, the solar panel 10, controller for solar 9, battery 11, inversion
Device 12 is sequentially connected, the electric quantity output end connection master controller 13 of the inverter 12.
As another embodiment of the present utility model, the master controller 13 uses PLC programmable logic controller (PLC)s.
As another embodiment of the present utility model, the master controller 13 is also associated with PC host computers.
The solar panel 10 of solar power system described in the utility model is collected solar energy and is converted into straight
Electric energy is flowed, can be stored in battery 11, storage is standby or carries out other direct current supply uses；It can be incited somebody to action by inverter 12 again
DC conversion uses for exchange electricity output；The effect of the controller for solar 9 be battery 11 is played additives for overcharge protection,
The effect of over.By solar power system described in the utility model can to master controller 13, elevator pump 5,
Booster pump 31, electrically controlled valve A7, electrically controlled valve B15, electrically controlled valve C18, electrically controlled valve D36, soil moisture sensing
Device 34, water quality monitoring sensor 27, level sensor 14 carry out offer electric energy, realize energy-saving and environmental protection, efficient treegarden irrigation
Form.
Master controller 13 described in the utility model uses PLC programmable logic controller (PLC)s, can be to soil humidity sensor
34th, water quality monitoring sensor 27, the corresponding signal detected by level sensor 14 are handled, and correspondingly control is electric
Control valve D36 and electrically controlled valve C18, electrically controlled valve A7, electrically controlled valve B15 opening and closing, and correspondingly controls
Booster pump 31 processed, elevator pump 5 work whether；Master controller 13 described in the utility model is also associated with PC host computers simultaneously, leads to
Cross being in communication with each other between PC host computers and master controller 13 so that gardener author is real by PC host computers can indoors
When monitor afforestation irrigation system work.
As another embodiment of the present utility model, the open top of the collect cavity 3 is provided with screen pack 4；Pass through
Described screen pack 4 can play preliminary filtration to the rainwater flowed into from ground 21.
As another embodiment of the present utility model, the filter layer includes three layers, is followed successively by PP cotton layers from the bottom to top
26th, active carbon layer 24, RO counter-infiltrations film layer 23；Pass through filter layer described in the utility model：PP cottons layer 26, active carbon layer 24,
RO counter-infiltrations film layer 23, sulfur dioxide, nitrogen dioxide and smell in rainwater can be efficiently separated, rainwater can be played preferably
Filter effect so that the rainwater after filtering is cleaner, and rainwater purification effect is good.
As another embodiment of the present utility model, the bottom side of filtration treatment chamber 22 is provided with sewage draining exit, blowdown
Mouth is connected with sewage pipe 29, dredge pump 28 is provided with sewage pipe 29, the dredge pump 28 is connected with master controller 13.
As another embodiment of the present utility model, the pointed cone formula osmos tube 32 is provided with multiple permeability holes 33.
Specifically, the course of work of the present utility model is illustrated with reference to accompanying drawing and technical scheme：Will by rainwater-collecting processing pond 1
It is delivered to after rainwater-collecting processing in clear water reserviors 8, can be by described outer when the rainwater by collecting processing is not sufficient enough
Supply water at clear water filler pipe 16 additional water source in portion's；When afforestation irrigation system works, by set soil humidity sensor 34,
The humidity of soil can be detected at any time, and information is fed back to master controller 13 in time, when soil moisture deficiency, master controller
Booster pump 31 is worked, electrically controlled valve D36 and electrically controlled valve C18 are opened respectively for 13 controls, and water is passed through respectively by threeway 20
Cross ground outlet pipe 17 ejected by spray head 19 tree crown of trees is irrigated, by ground lower discharging tube 37 by pointed cone formula
Multiple permeability holes 33 of osmos tube 32 carry out drop irrigation to the root of trees；Having reached can be simultaneously to the tree crown and root of trees
Portion is poured.Rainwater after the processing of filtration treatment chamber 22 can be monitored at any time by set water quality monitoring sensor 27
Water quality condition, if not reaching the standard of irrigation, water quality monitoring sensor 27 sends control signal to master controller 13, can
Control elevator pump 5 and electrically controlled valve A7 is stopped.It can be monitored at any time in clear water reserviors 8 by set level sensor 14
The situation of water level, if reaching the height of water level of setting, level sensor 14 sends control signal to master controller 13, can control
Elevator pump 5, electrically controlled valve A7 and electrically controlled valve B15 processed are stopped, and realize and stop toward water filling in clear water reserviors 8.
It is understood that above with respect to specific descriptions of the present utility model, it is merely to illustrate the utility model and is not
The technical scheme described by the utility model embodiment is limited to, it will be understood by those within the art that, still can be with
The utility model is modified or equivalent substitution, to reach identical technique effect；As long as satisfaction uses needs, all in this reality
Within new protection domain.
Claims (8)
1. a kind of afforestation irrigation system, including ground, it is located at the rainwater-collecting processing pond of below ground, is located at more than ground
Clear water reserviors, it is characterised in that：Described rainwater-collecting processing pond is connected with clear water reserviors, is provided with too above described clear water reserviors
Positive energy electricity generation system, master controller, the solar power system are connected with master controller, and the clear water reserviors are connected with irrigation system
System；Described rainwater-collecting processing pond is made up of collect cavity and filtration treatment chamber, and the side of described collect cavity, which is provided with, to be led to
The water-supply-pipe of processing chamber bottom is filtered, the filtration treatment intracavitary is provided with orifice filter and filter layer, gone out under the water-supply-pipe
Water pipe open height is less than the height of orifice filter, and the filter layer is located above orifice filter；The filtration treatment intracavitary filtering
The upper side of layer is provided with delivery port, and delivery port connects one end of drinking-water pipe, elevator pump is provided with drinking-water pipe, in delivery port
Place is provided with water quality monitoring sensor, the other end connection clear water reserviors of drinking-water pipe, connects and is installed on the drinking-water pipe of clear water reserviors one end
There is electrically controlled valve A；Outside clear water filler pipe is also associated with the clear water reserviors, electricity is installed on the outside clear water filler pipe
Gas control valve B, the clear water reserviors internal upper part are provided with level sensor, and the clear water reserviors bottom side is connected with total outlet pipe, institute
The other end connection irrigation system of total outlet pipe is stated, booster pump is installed in the total outlet pipe；The irrigation system includes three
Logical, ground outlet pipe, lower discharging tube, spray head, electrically controlled valve C, electrically controlled valve D, current divider, pointed cone formula osmos tube,
One end of the other end connection threeway of the total outlet pipe, the upper end connection ground outlet pipe of threeway, the lower end connection ground of threeway
Lower discharging tube, the electrically controlled valve C, electrically controlled valve D be separately mounted to ground outlet pipe, on lower discharging tube, go out on the ground
The upper end connection spray head of water pipe, the bottom connection current divider of ground lower discharging tube, the pointed cone formula osmos tube, which is arranged on, to be divided
Flow on device, the bottom of the pointed cone formula osmos tube is provided with soil humidity sensor；The soil humidity sensor, water quality prison
Survey sensor, level sensor connect the signal input part of master controller, the signal output part difference of the master controller respectively
Connect elevator pump, booster pump, electrically controlled valve A, electrically controlled valve B, electrically controlled valve C, electrically controlled valve D.
A kind of 2. afforestation irrigation system according to claim 1, it is characterised in that：The master controller uses PLC
Programmable logic controller (PLC).
A kind of 3. afforestation irrigation system according to claim 1, it is characterised in that：The master controller is also associated with
PC host computers.
A kind of 4. afforestation irrigation system according to claim 1, it is characterised in that：The solar power system by
Solar panel, controller for solar, battery, inverter composition, the solar panel, controller for solar, storage
Battery, inverter are sequentially connected, the electric quantity output end connection master controller of the inverter.
A kind of 5. afforestation irrigation system according to claim 1, it is characterised in that：The open top of the collect cavity
Screen pack is installed.
A kind of 6. afforestation irrigation system according to claim 1, it is characterised in that：The filter layer includes three layers,
PP cottons layer, active carbon layer, RO counter-infiltration film layers are followed successively by from the bottom to top.
A kind of 7. afforestation irrigation system according to claim 1, it is characterised in that：Filtration treatment bottom of chamber portion one
Side is provided with sewage draining exit, and sewage draining exit is connected with sewage pipe, and dredge pump, the dredge pump and master controller phase are provided with sewage pipe
Even.
A kind of 8. afforestation irrigation system according to claim 1, it is characterised in that：Set on the pointed cone formula osmos tube
There are multiple permeability holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720280091.8U CN206698977U (en) | 2017-03-22 | 2017-03-22 | Afforestation irrigation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720280091.8U CN206698977U (en) | 2017-03-22 | 2017-03-22 | Afforestation irrigation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206698977U true CN206698977U (en) | 2017-12-05 |
Family
ID=60470887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720280091.8U Expired - Fee Related CN206698977U (en) | 2017-03-22 | 2017-03-22 | Afforestation irrigation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206698977U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107926628A (en) * | 2018-01-03 | 2018-04-20 | 云南林业职业技术学院 | A kind of Chinese garden planting device |
| CN108782170A (en) * | 2018-08-16 | 2018-11-13 | 苏州仁益生物科技有限公司 | A kind of agricultural irrigation device |
| CN109794097A (en) * | 2019-04-16 | 2019-05-24 | 江苏元贞智能科技有限公司 | A kind of subsurface stormwater filtering ponds convenient for harvesting |
| CN110547172A (en) * | 2019-09-09 | 2019-12-10 | 金鹏电子信息机器有限公司 | Greening irrigation device based on city management |
| CN110915612A (en) * | 2019-12-05 | 2020-03-27 | 于利强 | Automatic spraying irrigation system of garden fruit trees |
| CN112470889A (en) * | 2020-11-12 | 2021-03-12 | 安徽威斯贝尔智能科技有限公司 | Thing allies oneself with device and terminal based on field irrigation |
| CN112841001A (en) * | 2021-01-11 | 2021-05-28 | 上海应用技术大学 | Automatic irrigation device |
| CN113062255A (en) * | 2021-04-13 | 2021-07-02 | 山东奥德山水市政园林有限公司 | Intelligent watering device for landscaping engineering |
-
2017
- 2017-03-22 CN CN201720280091.8U patent/CN206698977U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107926628A (en) * | 2018-01-03 | 2018-04-20 | 云南林业职业技术学院 | A kind of Chinese garden planting device |
| CN108782170A (en) * | 2018-08-16 | 2018-11-13 | 苏州仁益生物科技有限公司 | A kind of agricultural irrigation device |
| CN109794097A (en) * | 2019-04-16 | 2019-05-24 | 江苏元贞智能科技有限公司 | A kind of subsurface stormwater filtering ponds convenient for harvesting |
| CN110547172A (en) * | 2019-09-09 | 2019-12-10 | 金鹏电子信息机器有限公司 | Greening irrigation device based on city management |
| CN110915612A (en) * | 2019-12-05 | 2020-03-27 | 于利强 | Automatic spraying irrigation system of garden fruit trees |
| CN112470889A (en) * | 2020-11-12 | 2021-03-12 | 安徽威斯贝尔智能科技有限公司 | Thing allies oneself with device and terminal based on field irrigation |
| CN112841001A (en) * | 2021-01-11 | 2021-05-28 | 上海应用技术大学 | Automatic irrigation device |
| CN113062255A (en) * | 2021-04-13 | 2021-07-02 | 山东奥德山水市政园林有限公司 | Intelligent watering device for landscaping engineering |
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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: 20171205 Termination date: 20200322 |