CN205205923U - Catchment and irrigate integrative pond of sand setting retaining - Google Patents
Catchment and irrigate integrative pond of sand setting retaining Download PDFInfo
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- CN205205923U CN205205923U CN201521074158.XU CN201521074158U CN205205923U CN 205205923 U CN205205923 U CN 205205923U CN 201521074158 U CN201521074158 U CN 201521074158U CN 205205923 U CN205205923 U CN 205205923U
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- pond
- water inlet
- sand
- pool wall
- water
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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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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Abstract
The utility model relates to a catchment and irrigate integrative pond of sand setting retaining, it is including the nei chi and the waichi that are enclosed by the pool wall respectively, interior pond is located outer pond, form sand sedimentation area between the interior pond pool wall outside and the outer pond pool wall inboard, be the water reserve in the interior pond, outer pond pool wall is equipped with the water inlet, water inlet department is equipped with the water -stop pool wall, water -stop pool wall one end stretches into outer pond, and with interior pond pool wall outside fixed connection, the other end stretches out outer pond, and with outer pond pool wall fixed connection, one section that is close to the water inlet bottom the sand sedimentation area is equipped with at least one sand setting fill, the bottom that the sand setting was fought is less than sand sedimentation area's bottom, one section of keeping away from the water inlet of the pool wall in interior pond is equipped with at least one inlet tube that runs through its inside and outside both sides, the one end that every inlet tube is close to sand sedimentation area is equipped with blocks the sand net, compared with the prior art, the utility model discloses product manufacture is simple, with low costs, convenient to use, and the sand setting is convenient, the retaining is limpid, prevents effectively that the silt particle from getting into the water reserve, increases its water demand and life.
Description
Technical field
The utility model relates to rainwater recycle and utilizes field, particularly relates to a kind of sand setting reservoir.
Background technology
Southwestern Karst Mountain Area rainwater resource enriches, but under the karst features of " binary is three-dimensional " are grown, Atmospheric precipitation is rapidly converted into interflow subsurface drainage, and surface water resources leakage is serious, develops difficulty larger.In addition, 80% of Southwest China Karst Areas annual precipitation concentrates on 4-10 month, the seasonal variation characteristic remarkable of precipitation, and region seasonal drought incidence is high.For ensureing farm output in dry season, Collection utilization is carried out to the surface flow that wet season rainfall is formed, but due to Karst Mountain severe water and soil erosion, during rainfall, slope runoff sand content is large, and grit chamber design is unreasonable in addition, and sand setting ability is weak, reservoir is caused to put aside a large amount of silt particle, organic matter etc., not only water turbidity, is inconvenient to use, and has a strong impact on capacity and the service life of reservoir.
Utility model content
Technical problem to be solved in the utility model is to provide and a kind ofly manufactures the water-collecting irrigation sand setting retaining integral pool simple, cost is low, sand setting is convenient, retaining is limpid, easy to use.
The technical scheme that the utility model solves the problems of the technologies described above is as follows:
A kind of water-collecting irrigation sand setting retaining integral pool, it comprise respectively by pool wall around Nei Chi and Wai Chi, described interior pond is positioned at the inside in described outer pond, the region formed between outside the pool wall in described interior pond and inside the pool wall in described outer pond is desilting zone, the interior zone in described interior pond is water reserve, the pool wall in described outer pond is provided with water inlet, described water inlet is provided with blocks pool wall, described outer pond is stretched in described one end of blocking pool wall, and be fixedly connected with outside the pool wall in described interior pond, the other end stretches out described outer pond, and be fixedly connected with the pool wall in described outer pond, the bottom of described desilting zone is provided with at least one sand deposition hopper near a section of described water inlet, the upper opening of described sand deposition hopper is concordant with the bottom of described desilting zone, the bottom of described sand deposition hopper is lower than the bottom of described desilting zone, the pool wall in described interior pond is away from one section of water inlet pipe being provided with at least one and running through both sides inside and outside it of described water inlet, each described water inlet pipe is provided with sand blocking net near one end of described desilting zone.
Compared with prior art, the beneficial effects of the utility model are:
The sand setting district of the utility model product and water reserve integrated setting, effective reduction construction cost, manufacture simple, the surface flow that rainfall is formed flows into desilting zone from water inlet, when flowing in desilting zone, silt particle in rainwater can be deposited in sand deposition hopper, when rainwater after sand setting continues to flow to water inlet pipe place, water reserve is flowed into from water inlet pipe through sand blocking net, easy to use, sand setting is convenient, retaining is limpid, effectively prevents silt particle from entering water reserve with rainwater, increase water reserve water retention capacity, extend water reserve application life.
On the basis of technique scheme, the utility model can also do following improvement.
As a kind of preferred embodiment of the present utility model, described water inlet is also provided with channel of approach, the width of described channel of approach equals the width of described water inlet, a sidewall of described channel of approach for described in block pool wall, another sidewall is fixedly connected with the pool wall in described outer pond.
The beneficial effect of above-mentioned preferred version is adopted to be: the surface flow formed by the convenient rainfall of the guiding of channel of approach flows into desilting zone from water inlet.
As another kind of preferred embodiment of the present utility model, the angle between the pool wall in described channel of approach and described interior pond is 90 °-120 °.
The beneficial effect of above-mentioned preferred version is adopted to be: the outer wall in channel of approach and interior pond forms certain angle excursion, both the quick reduction of streaming potential had been conducive to, the impact force of current to reservoir outer wall can be reduced again, the flowing of current Rolling can be realized simultaneously, be conducive to the deposition of silt particle in current.
As another kind of preferred embodiment of the present utility model, described sand deposition hopper is at least two, and interval is arranged, and the volume of multiple described sand deposition hopper reduces gradually along the direction away from described water inlet.
The beneficial effect of above-mentioned preferred version is adopted to be: the rainwater of desilting zone is through sand deposition hopper one by one, the silt particle contained can be fewer and feweri, and bulky grain silt particle first deposits, deposit after granule silt particle, such setting meets the rule of sand setting, silt particle can be impelled to be trapped in as much as possible in sand deposition hopper, ensure sand setting effect, reduce again the workload manufacturing sand deposition hopper, manufacture simpler.
As another kind of preferred embodiment of the present utility model, described sand deposition hopper is the gradient of 15 °-75 ° near the sidewall of described water inlet, described sand deposition hopper is the gradient of 30 °-90 ° away from the sidewall of described water inlet, and described sand deposition hopper is less than the sidewall slopes of described sand deposition hopper away from described water inlet near the sidewall slopes of described water inlet.
The beneficial effect of above-mentioned preferred version is adopted to be: according to change, the concrete condition such as the demand of sand setting effect and the complexity of processing of streaming potential, the sidewall in sand deposition hopper water inlet direction and water outlet direction can select the different gradients, within the scope of this gradient, both can better ensure that current flow through sand deposition hopper smoothly, can better ensure that again mud and sand silting in rainwater is in sand deposition hopper, and sand deposition hopper can not be flowed out with rainwater, the best results when both algebraic difference between adjacent gradients are 10 °-15 °.
As another kind of preferred embodiment of the present utility model, described water inlet pipe is at least two, and interval is arranged, the described water inlet pipe blocking pool wall described in close is 2-4cm apart from the height bottom described desilting zone, and water inlet pipe described in other is 4-10cm apart from the height bottom described desilting zone.
The beneficial effect of above-mentioned preferred version is adopted to be: rainwater is set like this from when flowing into water reserve away from the water inlet pipe blocking pool wall, mud and sand silting sand deposition hopper can also not deposited to is in the bottom of desilting zone, make the rainwater flowing into water reserve limpider, visible foreign is less, improves the water-holding capacity of water reserve.
As another kind of preferred embodiment of the present utility model, described sand blocking net is obliquely installed, and and angle between the port surface of described water inlet pipe be 10 °-15 °.
The beneficial effect of above-mentioned preferred version is adopted to be: sand blocking net can effectively tackle the silt particle being more than or equal to mesh, avoiding them to enter water reserve makes retaining muddy, and sand blocking net is in tilted layout, sand blocking net can be made not easily to cave in blocking, extend its application life, angle of inclination is 10 ° of-15 ° of best results.
As another kind of preferred embodiment of the present utility model, it also comprises the suspension separate mesh be obliquely installed and suspension separating tank suspension can discharged outside pond, described suspension separate mesh is positioned at described desilting zone, its relative both sides respectively with the inwall in described outer pond, the outer wall in described interior pond is fixedly connected with, described suspension separate mesh is positioned at the bottom of described desilting zone near one end of described water inlet, the other end exceeds the top of described desilting zone, described suspension separating tank is horizontally disposed with, and be positioned at above described desilting zone, its one end is docked with the top of described suspension separate mesh, the other end stretches out described outer pond.
Adopt the beneficial effect of above-mentioned preferred version to be: the lightweight suspension thing that effectively can filter out bulk in current, as deadwood, fallen leaves, plastic garbage etc., and by suspension separating tank, these suspensions are discharged outer pond, make current more clean.
As another kind of preferred embodiment of the present utility model, the angle between described suspension separate mesh and horizontal plane is 5 °-30 °.
Adopt the beneficial effect of above-mentioned preferred version to be: to be conveniently trapped in the suspension on suspension separate mesh under the continuous impact of current, pour suspension separating tank, thus discharge outside pond.
As another kind of preferred embodiment of the present utility model, it also comprises suspension collecting pit, and described suspension collecting pit is positioned at described suspension separating tank and stretches out immediately below the one end in described outer pond.
The beneficial effect of above-mentioned preferred version is adopted to be: the suspension such as deadwood, fallen leaves in current can be collected by suspension collecting pit, for compost treatment, for farmland fertilization after having fermented, make full use of resource, both environmental protection, cost-saving again.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model product overlooks face;
Fig. 2 is the structural representation that the utility model product section launches distribution;
In accompanying drawing, the list of parts representated by each label is as follows:
1, water inlet, 2, sand deposition hopper, 3, suspension separate mesh, 4, suspension separating tank, 5, suspension collecting pit, 6, water inlet pipe, 7, sand blocking net, 8, Wai Chi, 9, Nei Chi, 10, block pool wall, 11, channel of approach.
Detailed description of the invention
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
Embodiment
As Fig. 1, shown in Fig. 2, a kind of water-collecting irrigation sand setting retaining integral pool, it comprise respectively by pool wall around in pond 9 and outer pond 8, described interior pond 9, outer pond 8 can surround circle, oval, square, the geometry such as hexagon or triangle, the pool wall height in described interior pond 9 is preferably equal with the pool wall height in described outer pond 8, described interior pond 9 is positioned at the inside in described outer pond 8, the region formed between outside the pool wall in described interior pond 9 and inside the pool wall in described outer pond 8 is desilting zone, the interior zone in described interior pond 9 is water reserve, the pool wall in described outer pond 8 is provided with water inlet 1, described water inlet 1 place is provided with blocks pool wall 10, described outer pond 8 is stretched in described one end of blocking pool wall 10, and be fixedly connected with outside the pool wall in described interior pond 9, the other end stretches out described outer pond 8, and be fixedly connected with the pool wall in described outer pond 8, described water inlet 1 place can also arrange channel of approach 11, the width of described channel of approach 11 equals the width of described water inlet 1, one sidewall of described channel of approach 11 for described in block pool wall 10, another sidewall is fixedly connected with the pool wall in described outer pond 8, the surface flow formed by the convenient rainfall of the guiding of channel of approach 11 like this flows into desilting zone from water inlet 1, the bottom of channel of approach 11 can be concordant with bottom sand setting district or higher than bottom desilting zone, the angle of 90 °-120 ° is preferably formed as between the pool wall in described channel of approach 11 and described interior pond 9, so both be conducive to the quick reduction of streaming potential, the impact force of current to reservoir outer wall can be reduced again, the flowing of current Rolling can be realized simultaneously, be conducive to the deposition of silt particle in current, the pool wall of described outer pond 8, interior pond 9, channel of approach 11 and bottom and described in block pool wall and all can adopt brick type or stone masonry formula, best about the 12cm of thickness, for preventing the bottom leaky of sand setting retaining integral pool, can thin mortar-chalked joint be carried out if desired,
The bottom of described desilting zone is provided with at least one sand deposition hopper 2 near a section of described water inlet 1, the upper opening of described sand deposition hopper 2 is concordant with the bottom of described desilting zone, the A/F of described sand deposition hopper 2 is preferably equal with described desilting zone width herein, the bottom of described sand deposition hopper 2 is lower than the bottom of described desilting zone, sand deposition hopper 2 takes asymmetric to design, described sand deposition hopper 2 is the gradient of 15 °-75 ° near the sidewall of described water inlet 1, described sand deposition hopper 2 is the gradient of 30 °-90 ° away from the sidewall of described water inlet 1, described sand deposition hopper 2 is less than the sidewall slopes of described sand deposition hopper 2 away from described water inlet 1 near the sidewall slopes of described water inlet 1, like this according to the change of streaming potential, the concrete conditions such as the demand of sand setting effect and the complexity of processing, the intake sidewall in direction and water outlet direction of sand deposition hopper 2 can select the different gradients, the water inlet direction gradient is little, the water outlet direction gradient is large, within the scope of this gradient, both can better ensure that current flow through sand deposition hopper 2 smoothly, can better ensure that again mud and sand silting in rainwater is in sand deposition hopper 2, and sand deposition hopper 2 can not be flowed out with rainwater, when both algebraic difference between adjacent gradients are 10-15 °, effect is better, when water inlet direction, the gradient is 30 °, the water outlet direction gradient is 45 °, best results, described sand deposition hopper 2 is preferably two or more, and interval is arranged, the volume of multiple described sand deposition hopper 2 reduces gradually along the direction away from described water inlet 1, such setting meets the rule of sand setting, and silt particle can be impelled to be trapped in sand deposition hopper 2 as much as possible, ensures sand setting effect, reduce again the workload manufacturing sand deposition hopper 2, manufacture more simple, preferred plan is the minimum capacity of sand deposition hopper 2 is average discharge × sand content in dry season, and heap(ed) capacity is wet season flow × sand content,
The pool wall in described interior pond 9 is away from one section of water inlet pipe 6 being provided with at least one and running through both sides inside and outside it of described water inlet 1, water inlet pipe 6 size is based on 100-200mm diameter, rainfall larger area can be adjusted accordingly, described water inlet pipe 6 is preferably two or more, and interval is arranged, the described water inlet pipe 6 blocking pool wall 10 described in close is 2-4cm apart from the height bottom described desilting zone, water inlet pipe 6 described in other is 4-10cm apart from the height bottom described desilting zone, such rainwater is from when flowing into water reserve away from the water inlet pipe 6 blocking pool wall 10, mud and sand silting sand deposition hopper 2 can also not deposited to is in the bottom of desilting zone, make the rainwater flowing into water reserve limpider, visible foreign is less, improve the water-holding capacity of water reserve, each described water inlet pipe 6 is provided with sand blocking net 7 near one end of described desilting zone, and sand blocking net 7 can effectively tackle the silt particle being more than or equal to mesh, avoids them to enter water reserve and makes retaining muddy, sand blocking net 7 is plastic nylon sand blocking net preferably, and nylon grid is as the criterion can block the above particle of sand medium sand, and size, between fineness modulus 2.2-2.0, while preventing a large amount of silt particle from entering, promotes water pipe conveyance power of water, described sand blocking net 7 is preferably obliquely installed, and and angle between the port surface of described water inlet pipe 6 be 10 °-15 °, sand blocking net 7 can be made not easily to cave in blocking because sand blocking net 7 is in tilted layout, extend its application life, best results when angle of inclination is 10 °-15 °.
The utility model product can also comprise the suspension separate mesh 3 be obliquely installed and the suspension separating tank 4 suspension can discharged outside pond, described suspension separate mesh 3 is positioned at described desilting zone, its relative both sides respectively with the inwall in described outer pond 8, the outer wall in described interior pond 9 is fixedly connected with, described suspension separate mesh 3 is positioned at the bottom of described desilting zone near one end of described water inlet 1, the other end exceeds the top of described desilting zone slightly, described suspension separating tank 4 is horizontally disposed with, and be positioned at above described desilting zone, its one end is docked with the top of described suspension separate mesh 3, the other end stretches out described outer pond 8, this makes it possible to the lightweight suspension thing effectively filtering out bulk in current, as deadwood, fallen leaves, plastic garbage etc., and by suspension separating tank 4, these suspensions are discharged outer pond, make current more clean, angle between described suspension separate mesh 3 and horizontal plane is preferably 5 °-30 °, is conveniently like this trapped in the suspension on suspension separate mesh 3 under the continuous impact of current, pours suspension separating tank 4, thus discharges outside pond, immediately below one end that described suspension separating tank 4 stretches out described outer pond 8, suspension collecting pit 5 can also be set, the suspension such as deadwood, fallen leaves in current so just can be collected by suspension collecting pit 5, for compost treatment, for farmland fertilization after having fermented, make full use of resource, both environmental protection, cost-saving again, its workflow is: after the slope runoff that atmospheric precipitation to ground is formed later enters channel of approach 1, current enter sand deposition hopper 2 in the mode of fluctuation turbulent flow, after multiple sand deposition hopper, current filter by suspension lightweight suspension thing from net 3, lightweight suspension thing after filtration washes away to suspension collecting pit 5 through suspension separating tank 4, carry out nature to foster and apply fertilizer fermentation, current after filtration are again by sand blocking net 7, by entering water reserve after water inlet pipe 6, particle more than medium sand is intercepted in sand setting district and slowly precipitates.
According to Karst Mountain collection rain irrigation system generality, the water-collecting irrigation sand setting retaining integrated pond set up with the quick sand setting of multilayer, filter type can be promoted in severe water and soil erosion, surface water leakage field irrigation district that is fast, that need to carry out rain collecting use, it is not only conducive to the current cleannes improving water reserve, postpone the water reserve life-span, and whole design is without the need to other electric fixturess, efficient energy-saving, cleaning easy maintenance.For guaranteeing that the utility model product can effective sand setting, need regularly to carry out desilting inspection, remove gravel, impurity etc. in sand deposition hopper 2 and suspension separate mesh 3, wet season cleaning cycle is 1 month, and dry season, cleaning cycle was 3 months.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a water-collecting irrigation sand setting retaining integral pool, it is characterized in that, it comprise respectively by pool wall around in pond (9) and outer pond (8), described interior pond (9) is positioned at the inside of described outer pond (8), the region formed between outside the pool wall of described interior pond (9) and inside the pool wall in described outer pond (8) is desilting zone, the interior zone of described interior pond (9) is water reserve, the pool wall of described outer pond (8) is provided with water inlet (1), described water inlet (1) place is provided with blocks pool wall (10), described outer pond (8) is stretched in described one end of blocking pool wall (10), and be fixedly connected with outside the pool wall of described interior pond (9), the other end stretches out described outer pond (8), and be fixedly connected with the pool wall of described outer pond (8), the bottom of described desilting zone is provided with at least one sand deposition hopper (2) near a section of described water inlet (1), the upper opening of described sand deposition hopper (2) is concordant with the bottom of described desilting zone, the bottom of described sand deposition hopper (2) is lower than the bottom of described desilting zone, the pool wall of described interior pond (9) is provided with at least one water inlet pipe running through both sides inside and outside it (6) away from a section of described water inlet (1), each described water inlet pipe (6) is provided with sand blocking net (7) near one end of described desilting zone.
2. water-collecting irrigation sand setting retaining integral pool according to claim 1, it is characterized in that, described water inlet (1) place is also provided with channel of approach (11), the width of described channel of approach (11) equals the width of described water inlet (1), one sidewall of described channel of approach (11) for described in block pool wall (10), another sidewall is fixedly connected with the pool wall of described outer pond (8).
3. water-collecting irrigation sand setting retaining integral pool according to claim 2, it is characterized in that, the angle between the pool wall in described channel of approach (11) and described interior pond (9) is 90 °-120 °.
4. water-collecting irrigation sand setting retaining integral pool according to claim 1, it is characterized in that, described sand deposition hopper (2) is at least two, and interval is arranged, and the volume of multiple described sand deposition hopper (2) reduces gradually along the direction away from described water inlet (1).
5. water-collecting irrigation sand setting retaining integral pool according to claim 1, it is characterized in that, the sidewall of the close described water inlet (1) of described sand deposition hopper (2) is the gradient of 15 °-75 °, described sand deposition hopper (2) is the gradient of 30 °-90 ° away from the sidewall of described water inlet (1), and described sand deposition hopper (2) is less than the sidewall slopes of described sand deposition hopper (2) away from described water inlet (1) near the sidewall slopes of described water inlet (1).
6. water-collecting irrigation sand setting retaining integral pool according to claim 1, it is characterized in that, described water inlet pipe (6) is at least two, and interval is arranged, the described water inlet pipe (6) blocking pool wall (10) described in close is 2-4cm apart from the height bottom described desilting zone, and water inlet pipe described in other (6) is 4-10cm apart from the height bottom described desilting zone.
7. water-collecting irrigation sand setting retaining integral pool according to claim 1, it is characterized in that, described sand blocking net (7) is obliquely installed, and and angle between the port surface of described water inlet pipe (6) be 10 °-15 °.
8. the water-collecting irrigation sand setting retaining integral pool according to any one of claim 1-7, it is characterized in that, it also comprises the suspension separate mesh (3) be obliquely installed and the suspension separating tank (4) suspension can discharged outside pond, described suspension separate mesh (3) is positioned at described desilting zone, its relative both sides respectively with the inwall of described outer pond (8), the outer wall of described interior pond (9) is fixedly connected with, described suspension separate mesh (3) is positioned at the bottom of described desilting zone near one end of described water inlet (1), the other end exceeds the top of described desilting zone, described suspension separating tank (4) is horizontally disposed with, and be positioned at above described desilting zone, its one end is docked with the top of described suspension separate mesh (3), the other end stretches out described outer pond (8).
9. water-collecting irrigation sand setting retaining integral pool according to claim 8, is characterized in that, the angle between described suspension separate mesh (3) and horizontal plane is 5 °-30 °.
10. water-collecting irrigation sand setting retaining integral pool according to claim 8, it is characterized in that, it also comprises suspension collecting pit (5), and described suspension collecting pit (5) is positioned at described suspension separating tank (4) and stretches out immediately below one end of described outer pond (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521074158.XU CN205205923U (en) | 2015-12-22 | 2015-12-22 | Catchment and irrigate integrative pond of sand setting retaining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521074158.XU CN205205923U (en) | 2015-12-22 | 2015-12-22 | Catchment and irrigate integrative pond of sand setting retaining |
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| Publication Number | Publication Date |
|---|---|
| CN205205923U true CN205205923U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521074158.XU Expired - Fee Related CN205205923U (en) | 2015-12-22 | 2015-12-22 | Catchment and irrigate integrative pond of sand setting retaining |
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| CN (1) | CN205205923U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110249972A (en) * | 2019-06-26 | 2019-09-20 | 广西农业职业技术学院 | A kind of karst sloping field water collecting irrigation system |
-
2015
- 2015-12-22 CN CN201521074158.XU patent/CN205205923U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110249972A (en) * | 2019-06-26 | 2019-09-20 | 广西农业职业技术学院 | A kind of karst sloping field water collecting irrigation system |
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Granted publication date: 20160504 Termination date: 20161222 |
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| CF01 | Termination of patent right due to non-payment of annual fee |