CN213253345U - Runoff sediment water-soil separation device suitable for agricultural development - Google Patents
Runoff sediment water-soil separation device suitable for agricultural development Download PDFInfo
- Publication number
- CN213253345U CN213253345U CN202020848393.2U CN202020848393U CN213253345U CN 213253345 U CN213253345 U CN 213253345U CN 202020848393 U CN202020848393 U CN 202020848393U CN 213253345 U CN213253345 U CN 213253345U
- Authority
- CN
- China
- Prior art keywords
- water
- box
- soil
- soil separation
- filter screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a runoff silt water-soil separation device suitable for agricultural development, which comprises a box body, a water-soil separation box and an automatic collecting box, and has simple and reasonable structural design, when in work, a multistage water collecting gallery is arranged in a ridge zone according to the terrain, and a water-soil separation device matched soil storage pool and a water collecting well are respectively arranged at the nodes of the water collecting gallery, so that mixed water containing a large amount of silt is quickly separated, and the water enters the water collecting well matched farmland to be refilled, thereby achieving the cyclic high-efficiency utilization of water resources; the water-soil separation box carries out first static force filtration on mixed water by an activated carbon filter screen and a first second filter screen; a rotating motor is arranged at the top of the water-soil separation box and drives two-stage gears to rotate the water-soil separation box to perform secondary power filtration; the filter screen can be automatically cleaned when the sediment content is low, so that the filtering effect is kept; the automatic discharging box is provided with a weight threshold value, and the telescopic rod of the discharging box is controlled to move through the pressure sensor and the electromagnetic valve to complete discharging.
Description
Technical Field
The utility model relates to a fixed ditch protection highland prevents and controls technical field suitable for extensive agricultural development and engineering construction, specifically is a runoff silt water and soil separator suitable for agricultural development.
Background
The loess plateau is the most valuable land resource suitable for cultivation, agriculture and living in the loess plateau. Due to the serious influence of human activities on natural habitats and extreme rainfall in nearly two thousand years, the source-tracing erosion and the hydraulic erosion of the trench slope are aggravated, the water and soil loss is serious, the complete tableland is separated and broken, and the production life and the life and property safety of local masses are seriously threatened. It is statistically determined that severe water and soil loss occurs in about 96% of large tablelands having an area of 1 or more ten thousand acres in the tableland of Qingyang field tableland (2014 in the fixed ditch tableland of Qingyang). In the face of crisis and challenges of resource constraint convergence, environmental pollution aggravation and ecosystem degradation, in 12 months in 2018, the national department of water conservancy officials formally sets up a prevention and control target of ' fixed-ditch tableland and ' comprehensive treatment plan ' in a loess plateau gully region, and ' gully head non-advancing, gully non-cutting and gully bank non-expanding ' around the loess plateau gully region, effectively controls gully head traceability erosion and reduces water and soil loss through agriculture and forestry-water conservation-engineering-ecological comprehensive treatment measures, and guarantees ecological safety, grain safety and sustainable and stable development of the economic society in the tableland region.
Research shows that the main earth surface operation force influencing the advancing of the ditch head is water, and how to regulate and control water and sand in a landform unit is an effective way for controlling the erosion of surface runoff. Therefore, an equipment which can improve the cyclic and sustainable utilization of surface runoff water resources and can regulate and control silt to slow down surface erosion is urgently needed by a surface runoff silt regulation and control technical system taking farmland in a highland area as an implementation unit. The existing water and soil separation device can not meet the requirements of water retention, soil nutrient interception and water and soil loss prevention and control of the farmland in the water collection area in the comprehensive treatment strategy of 'tableland fixing and maintaining tablelands' no matter in design application and space configuration, or in the aspects of separation effect and recycling. Therefore, there is an urgent need to provide a runoff sediment water-soil separation device suitable for agricultural development, which solves the problems in the background art by improving the prior art, and provides technical support for preventing and controlling water and soil loss on one hand, and supplements the technical method taking a ditch head water collecting area as a protection system on the other hand. Therefore, the technical personnel in the field provide a runoff sediment water and soil separation device suitable for agricultural development to solve the problems in the background technology.
Disclosure of Invention
An object of the utility model is to provide a runoff silt water and soil separator who is suitable for agricultural development to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a runoff sediment water-soil separation device applicable to agricultural development comprises a box body, a water-soil separation box, an automatic material collecting box and a water drain channel, wherein a telescopic rod is embedded in the left side of the lower end of the box body; a push plate is arranged at the right end of the telescopic rod; a supporting plate is arranged below the inside of the box body, a water-soil separation box is arranged at the upper end of the supporting plate, a protective box is arranged at the center of the upper end of the water-soil separation box, and first rotating blocks are arranged on the left side and the right side of the water-soil separation box; a motor is arranged on the right side of the upper end in the box body, a first gear is arranged on an output shaft of the motor and meshed with a second gear, and a hollow shaft is arranged in the second gear; a fixed sleeve is arranged above the hollow shaft, an installation block is arranged at the lower end of the fixed sleeve, and second rotating blocks are arranged on the left side and the right side of the lower end of the installation block; the second rotating block is matched with the first rotating block; a connecting block is arranged below the hollow shaft, a connecting plate is arranged at the lower end of the connecting block, connecting rods are arranged on the left side and the right side of the lower end of the connecting plate, circular plates are arranged on the upper side and the lower side of each connecting rod, and scraping blades are arranged between the circular plates; the left side and the right side of the lower end in the water-soil separation box are both provided with through holes, and an activated carbon filter screen, a second filter screen and a first filter screen are arranged in the water-soil separation box; a pressure sensor is embedded in the center of the lower end of the box body, and an automatic material receiving box is arranged at the upper end of the pressure sensor; the discharge chute is arranged on the right side of the lower end of the box body, a water drain channel is arranged on the right side below the box body, and a switch valve is arranged on the water drain channel.
As a further aspect of the present invention: rectangular blocks are arranged on the left side and the right side of the upper part in the box body, a sliding block is arranged at one end, opposite to the rectangular blocks, of each rectangular block, a sliding rail is arranged at the other end of each sliding block, and the sliding rails are fixedly connected with the water-soil separation box, so that the stability of the water-soil separation box during rotation is guaranteed; the backup pad upper end with soil and water separator box lower extreme all is equipped with circular recess, four corners all is equipped with the ball in the circular recess.
As a further aspect of the present invention: the left side and the right side of the bottom in the water-soil separation box are respectively provided with a second discharge hole, and the center of the bottom in the water-soil separation box is provided with a first discharge hole; electromagnetic switch valves are arranged on the first discharge port and the second discharge port so as to discharge the sediment subjected to dynamic and static separation; the solenoid valve controls the switching interval according to the unit time flow.
As a further aspect of the present invention: cushion blocks are arranged at four corners of the lower end of the box body; the hollow shaft upper end is equipped with the adapter, the adapter upper end is through pipeline and outside muddy water feeding device fixed connection, can supply the pipe diameter according to regional runoff silt consistency and flow control muddy water.
As a further aspect of the present invention: the active carbon filter screen, the second filter screen and the first filter screen are arranged in a cylindrical shape.
As a further aspect of the present invention: the motor, the pressure sensor, the telescopic rod and the electromagnetic switch valve are electrically connected with an external power supply and the digital display relay through wires; the model of the pressure sensor is JHBM-H1(0-500 kg/0.1% FS), the model of the external digital display relay is USR-R16-T (12v), the running condition of equipment can be monitored remotely, and the discharge rate can be ensured by regulating and controlling a threshold value in real time according to the rainfall situation; the water collecting well and the soil storage pool are matched to increase the speed of water-soil separation and improve the reutilization of water-soil resources; the water collecting well is arranged in a runoff regulation and control catchment area to increase comprehensive allocation of water resources, and the catchment area is connected with the catchment corridor in a shunting way; the soil storage pools are arranged on two sides of the road so as to increase the transportability of soil resources and are directly connected with the water collecting gallery nodes.
Compared with the prior art, the beneficial effects of the utility model are that:
1. when the utility model works, the external mixed water supply device sends the mixed water into the water-soil separation box through the hollow shaft, and the mixed water is subjected to static filtration sequentially through the first filter screen, the second filter screen and the activated carbon filter screen, and most of silt enters the automatic discharging box through the first discharging port; secondly the motor drives two-stage gear and makes soil and water separator box rotate, makes soil and water separation more thorough, has better filter effect and has preserved soil composition than current separation technique.
2. The utility model discloses the during operation, when muddy water silt content is lower can directly clean active carbon filter screen, second filter screen, first filter screen through the rotation, avoided the manpower to wash and probably to the damage of its device, ensured this water and soil separator's filter effect.
3. The utility model discloses the during operation is through the first discharge gate of solenoid switch valve control and the ejection of compact of second discharge gate, sets for automatic discharge bottom of the case pressure sensor threshold value through the relay, can trigger the telescopic link when silt reaches the threshold value and drive the push pedal and release silt to holding the soil box, has improved the speed of soil and water separation.
4. The utility model discloses the during operation, the water that will separate collects to the sump pit through the splitter box, supporting irrigation hydraulic engineering, can realize the cyclic sustainable utilization of water resource, has better practicality than prior art.
Drawings
Fig. 1 is a schematic structural diagram of a runoff sediment water-soil separation device suitable for agricultural development.
Fig. 2 is a schematic structural diagram of a runoff sediment water-soil separation device A suitable for agricultural development.
In the figure: the device comprises a box body 1, a supporting plate 2, a water-soil separation box 3, a first rotating block 4, a motor 5, a first gear 6, a second gear 7, a hollow shaft 8, a mounting block 9, a second rotating block 10, a first discharge hole 11, a pressure sensor 12, an automatic material receiving box 13, an expansion link 14, a water drain channel 15, a protective box 16, a connecting plate 17, a connecting rod 18, a scraping blade 19, an activated carbon filter screen 20, a second filter screen 21, a first filter screen 22 and a second discharge hole 23.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only 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 work belong to the protection scope of the present invention.
Referring to fig. 1-2, in the embodiment of the present invention, a runoff sediment water-soil separation device suitable for agricultural development includes a box body 1, a water-soil separation box 3, an automatic material receiving box 13 and a water drain channel 15, wherein a telescopic rod 14 is embedded in the left side of the lower end of the box body 1; a push plate is arranged at the right end of the telescopic rod 14; a supporting plate 2 is arranged below the box body 1, a water-soil separation box 3 is arranged at the upper end of the supporting plate 2, a protective box 16 is arranged at the center of the upper end of the water-soil separation box 3, and first rotating blocks 4 are arranged on the left side and the right side of the water-soil separation box 3; a motor 5 is arranged on the right side of the upper end in the box body 1, a first gear 6 is arranged on an output shaft of the motor 5, the first gear 6 is meshed with a second gear 7, and a hollow shaft 8 is arranged in the second gear 7; a fixed sleeve is arranged above the hollow shaft 8, an installation block 9 is arranged at the lower end of the fixed sleeve, and second rotating blocks 10 are arranged on the left side and the right side of the lower end of the installation block 9; the second rotating block 10 is matched with the first rotating block 4; a connecting block is arranged below the hollow shaft 8, a connecting plate 17 is arranged at the lower end of the connecting block, connecting rods 18 are arranged on the left side and the right side of the lower end of the connecting plate 17, circular plates are arranged on the upper side and the lower side of each connecting rod 18, and scraping blades 19 are arranged between the circular plates; through holes are formed in the left side and the right side of the lower end in the water-soil separation box 3, and an activated carbon filter screen 20, a second filter screen 21 and a first filter screen 22 are arranged in the water-soil separation box 3; a pressure sensor 12 is embedded in the center of the lower end of the box body 1, and an automatic material receiving box 13 is arranged at the upper end of the pressure sensor 12; the discharge chute is arranged on the right side of the lower end of the box body 1, the water drainage channel 15 is arranged on the right side below the box body 1, and the switch valve is arranged on the water drainage channel 15.
Rectangular blocks are arranged on the left side and the right side of the upper part in the box body 1, a sliding block is arranged at one end, opposite to the rectangular blocks, of each rectangular block, a sliding rail is arranged at the other end of each sliding block, and the sliding rails are fixedly connected with the water-soil separation box 3, so that the stability of the water-soil separation box 3 during rotation is guaranteed; the upper end of the supporting plate 2 and the lower end of the water-soil separation box 3 are both provided with a circular groove, and balls are arranged at four corners in the circular groove.
The left side and the right side of the bottom in the water-soil separation box 3 are respectively provided with a second discharge hole 23, and the center of the bottom in the water-soil separation box 3 is provided with a first discharge hole 11; electromagnetic switch valves are arranged on the first discharge port 11 and the second discharge port 23 so as to discharge the sediment subjected to dynamic and static separation; the solenoid valve controls the switching interval according to the unit time flow.
Cushion blocks are arranged at four corners of the lower end of the box body 1; 8 upper ends of hollow shaft are equipped with the adapter, the adapter upper end is through pipeline and outside muddy water feeding device fixed connection, can supply the pipe diameter according to regional runoff silt consistency and flow control muddy water.
The activated carbon filter screen 20, the second filter screen 21 and the first filter screen 22 are cylindrical.
The motor 5, the pressure sensor 12, the telescopic rod 14 and the electromagnetic switch valve are electrically connected with an external power supply and a digital display relay through leads; the model of the pressure sensor 12 is JHBM-H1(0-500 kg/0.1% FS), the model of the external digital display relay is USR-R16-T (12v), the operation condition of equipment can be monitored remotely, and the discharge rate can be ensured by regulating and controlling a threshold value in real time according to the rainfall situation; the water collecting well and the soil storage pool are matched to increase the speed of water-soil separation and improve the reutilization of water-soil resources; the water collecting well is arranged in a runoff regulation and control catchment area to increase comprehensive allocation of water resources, and the catchment area is connected with the catchment corridor in a shunting way; the soil storage pools are arranged on two sides of the road so as to increase the transportability of soil resources and are directly connected with the water collecting gallery nodes.
The utility model discloses a theory of operation is:
the utility model relates to a runoff silt water-soil separation device suitable for agricultural development, during operation, an external mixed water supply system sends mixed water into a water-soil separation box 3 through a hollow shaft 8, and the mixed water is subjected to static filtration sequentially through a first filter screen 22, a second filter screen 21 and an active carbon filter screen 20, and most of silt enters an automatic discharging box 13 through a first discharging port 11; secondly, the motor 5 drives the first gear 6 and the second gear 7 to rotate, so that the second rotating block 10 drives the first rotating block 4 to rotate, the water-soil separating box 3 rotates, and water-soil separation is more thorough; an external relay is further adopted to set the weight threshold value of the pressure sensor 12 at the bottom of the automatic discharging box 13, when the weight threshold value is exceeded, the telescopic rod 14 of the automatic discharging box 13 is controlled by the electromagnetic valve to move to complete discharging, and the water-soil separation efficiency is improved. In addition, the water-soil separation device leads the separated water into the water collecting well for cyclic utilization through shunting, and introduces silt into the soil storage pool nearby for sand collection and standby. And can directly pass through motor rotation 5 when silt content is lower in the muddy water, hollow shaft 8 drives connecting plate 17 through the connecting block and rotates, makes connecting rod 18, doctor-bar 19 rotate to clean active carbon filter screen 20, second filter screen 21, first filter screen 22, avoided the manpower to wash and probably to the damage of its device, ensured this water and soil separator's filter effect. The device can effectively improve the runoff regulation and control of the catchment area and the continuous utilization efficiency of water resources, and achieves the purposes of slowing down water and soil loss and guaranteeing farmland and ecological safety.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A runoff sediment water-soil separation device applicable to agricultural development comprises a box body (1), a water-soil separation box (3), an automatic material receiving box (13) and a water drainage channel (15), and is characterized in that a telescopic rod (14) is embedded in the left side of the lower end of the box body (1); a push plate is arranged at the right end of the telescopic rod (14); a supporting plate (2) is arranged below the box body (1), a water-soil separating box (3) is arranged at the upper end of the supporting plate (2), a protective box (16) is arranged at the center of the upper end of the water-soil separating box (3), and first rotating blocks (4) are arranged on the left side and the right side of the water-soil separating box (3); a motor (5) is arranged on the right side of the upper end in the box body (1), an output shaft of the motor (5) is provided with a first gear (6), the first gear (6) is meshed with a second gear (7), and a hollow shaft (8) is arranged in the second gear (7); a fixed sleeve is arranged above the hollow shaft (8), an installation block (9) is arranged at the lower end of the fixed sleeve, and second rotating blocks (10) are arranged on the left side and the right side of the lower end of the installation block (9); the second rotating block (10) is matched with the first rotating block (4); a connecting block is arranged below the hollow shaft (8), a connecting plate (17) is arranged at the lower end of the connecting block, connecting rods (18) are arranged on the left side and the right side of the lower end of the connecting plate (17), circular plates are arranged on the upper side and the lower side of each connecting rod (18), and scraping blades (19) are arranged between the circular plates; through holes are formed in the left side and the right side of the lower end in the water-soil separation box (3), and an activated carbon filter screen (20), a second filter screen (21) and a first filter screen (22) are arranged in the water-soil separation box (3); a pressure sensor (12) is embedded in the center of the lower end of the box body (1), and an automatic material receiving box (13) is arranged at the upper end of the pressure sensor (12); the discharging tank is arranged on the right side of the lower end of the box body (1), a water draining channel (15) is arranged on the right side below the box body (1), and a switch valve is arranged on the water draining channel (15).
2. The runoff sediment water and soil separating device applicable to agricultural development of claim 1, wherein rectangular blocks are arranged on the left side and the right side of the upper portion in the box body (1), a sliding block is arranged at one end, opposite to the rectangular blocks, of each rectangular block, a sliding rail is arranged at the other end of each sliding block, and each sliding rail is fixedly connected with the water and soil separating box (3) so as to ensure the stability of the water and soil separating box (3) during rotation; the upper end of the supporting plate (2) and the lower end of the water-soil separation box (3) are both provided with circular grooves, and four corners in each circular groove are both provided with balls.
3. The runoff sediment water-soil separation device applicable to agricultural development of claim 1, wherein the left side and the right side of the bottom in the water-soil separation box (3) are provided with second discharge holes (23), and the center of the bottom in the water-soil separation box (3) is provided with a first discharge hole (11); and the first discharge hole (11) and the second discharge hole (23) are both provided with electromagnetic switch valves.
4. The runoff sediment water-soil separation device applicable to agricultural development of claim 1, wherein four corners of the lower end of the box body (1) are provided with cushion blocks; the hollow shaft (8) upper end is equipped with the adapter, the adapter upper end is through pipeline and outside muddy water feeding device fixed connection.
5. The runoff sediment water-soil separation device applicable to agricultural development of claim 1, wherein the activated carbon filter screen (20), the second filter screen (21) and the first filter screen (22) are cylindrical.
6. The runoff sediment water-soil separation device applicable to agricultural development of claim 1, wherein the motor (5), the pressure sensor (12), the telescopic rod (14) and the electromagnetic switch valve are electrically connected with an external power supply and a digital display relay through leads; the pressure sensor (12) is JHBM-H1(0-500 kg/0.1% FS), the external digital display relay is USR-R16-T (12v), and a water collecting well and a soil storage pool are matched to increase the speed of water-soil separation; the water collecting well is arranged in a runoff regulation and control catchment area, and the catchment area is connected with the catchment corridor in a shunting manner; the soil storage pool is arranged on two sides of the road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020848393.2U CN213253345U (en) | 2020-05-20 | 2020-05-20 | Runoff sediment water-soil separation device suitable for agricultural development |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020848393.2U CN213253345U (en) | 2020-05-20 | 2020-05-20 | Runoff sediment water-soil separation device suitable for agricultural development |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213253345U true CN213253345U (en) | 2021-05-25 |
Family
ID=75936171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020848393.2U Expired - Fee Related CN213253345U (en) | 2020-05-20 | 2020-05-20 | Runoff sediment water-soil separation device suitable for agricultural development |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213253345U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457260A (en) * | 2021-09-02 | 2021-10-01 | 江苏大彭环保科技有限公司 | Sewage treatment filter |
-
2020
- 2020-05-20 CN CN202020848393.2U patent/CN213253345U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457260A (en) * | 2021-09-02 | 2021-10-01 | 江苏大彭环保科技有限公司 | Sewage treatment filter |
| CN113457260B (en) * | 2021-09-02 | 2021-11-09 | 江苏大彭环保科技有限公司 | Sewage treatment filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103306360B (en) | Multidimensional ecological drainage system for intercepting and controlling separate system rainwater pollutants into river | |
| CN210529817U (en) | Sponge city construction is with recessed formula greenery patches rainwater collection device | |
| CN209873816U (en) | Mine slope regeneration system | |
| CN213253345U (en) | Runoff sediment water-soil separation device suitable for agricultural development | |
| CN211314442U (en) | Potential energy-based high-speed rail bridge hydroelectric generation and rainwater collection irrigation system | |
| CN113585422A (en) | Self-adhesive waterproof and drainage integrated system and drainage method thereof | |
| CN204779040U (en) | Artificial wetland treatment system of initial stage rainwater | |
| CN206799269U (en) | A kind of ecological ditch pool system for preventing and treating pollution of area source | |
| CN109356224A (en) | A kind of skyscraper rainwater-collecting self-loopa utilizes system | |
| CN215518612U (en) | Dykes and dams slope protection structure for design based on hydraulic and hydroelectric engineering | |
| CN111411675A (en) | Sponge city-based sinking square water circulation system | |
| CN112827875B (en) | Prevent removal canopy device that rigidity landfill area drenches with rain | |
| CN109052651A (en) | A kind of multi-functional low biological gaseous-waste holdup system of influence exploitation | |
| CN212427242U (en) | Top structure desilting drainage structural system of underground engineering | |
| CN212358883U (en) | Green roof | |
| CN211172322U (en) | Sponge urban water storage adjusting tank | |
| CN110821737B (en) | High-speed railway bridge hydroelectric generation and rainwater collection irrigation system based on potential energy | |
| CN207109728U (en) | A kind of vertical type barricade in hydraulic engineering river course | |
| CN203213075U (en) | Reservoir area water-level-fluctuating zone ecological slope protecting system | |
| CN112031040A (en) | Top structure desilting drainage structural system of underground engineering | |
| CN212582591U (en) | Ditch head is backfilled and is taken measures comprehensive slope protection structure of using | |
| CN207499101U (en) | Rainwater collecting and treating system under a kind of overpass | |
| CN207348176U (en) | A kind of ecological, environmental protective water channel structure for sponge urban construction | |
| CN109952939A (en) | A kind of agricultural rainwater-collecting processing dropper energy conservation equipment | |
| CN110206094A (en) | A kind of Rain Garden suitable for monsoon weather |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210525 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |