CN108035326B - Floating island type reservoir simple blocking and floating device - Google Patents
Floating island type reservoir simple blocking and floating device Download PDFInfo
- Publication number
- CN108035326B CN108035326B CN201810004342.9A CN201810004342A CN108035326B CN 108035326 B CN108035326 B CN 108035326B CN 201810004342 A CN201810004342 A CN 201810004342A CN 108035326 B CN108035326 B CN 108035326B
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- 230000000903 blocking effect Effects 0.000 title claims abstract description 42
- 238000004873 anchoring Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 238000011144 upstream manufacturing Methods 0.000 claims description 23
- 239000004698 Polyethylene Substances 0.000 claims description 11
- -1 polyethylene Polymers 0.000 claims description 11
- 229920000573 polyethylene Polymers 0.000 claims description 11
- 239000004677 Nylon Substances 0.000 claims description 10
- 229920001778 nylon Polymers 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 208000034699 Vitreous floaters Diseases 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 4
- 241000195493 Cryptophyta Species 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 239000010813 municipal solid waste Substances 0.000 description 14
- 239000010865 sewage Substances 0.000 description 9
- 239000002893 slag Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
- E02B15/06—Barriers therefor construed for applying processing agents or for collecting pollutants, e.g. absorbent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02C—SHIP-LIFTING DEVICES OR MECHANISMS
- E02C1/00—Locks or dry-docks; Shaft locks, i.e. locks of which one front side is formed by a solid wall with an opening in the lower part through which the ships pass
-
- 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
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/30—Flood prevention; Flood or storm water management, e.g. using flood barriers
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Cleaning Or Clearing Of The Surface Of Open Water (AREA)
Abstract
The utility model discloses a simple floating blocking device for a floating island type reservoir, which comprises a floating island system and a traction anchoring system, wherein the floating island system is connected to two banks through the traction anchoring system. The utility model adopts a modularized design, has certain toughness and can bear hydraulic impact of different degrees; the bottom of the floating island system is provided with a screen plate and a balance weight, and the floating island is provided with a railing; the middle part is provided with a navigation floating platform for the ship to pass through and the staff to rest. The whole device can effectively intercept floaters, algae and solid impurities, and damaged parts can be directly replaced without being integrally disassembled due to the advantage of modular design, so that the maintenance cost is reduced, and the operation is convenient.
Description
Technical Field
The utility model relates to a simple floating blocking device for a floating island type reservoir, and belongs to the technical field of water conservancy, hydropower and civil engineering construction.
Background
In the current situation, after the hydraulic engineering is used for sluice and water storage to form a reservoir, various floaters are gathered in front of a reservoir dam (or in front of a water inlet channel) in a downstream manner, so that more and more floaters are accumulated in the past, and the period of flood is particularly long. The problem exists in different degrees in a plurality of hydropower stations and reservoirs in China, and is a problem which is difficult to thoroughly solve. At present, when a plurality of floaters influence the operation of the hydropower station, a trash rack (or trash rack float) is arranged in front of the trash rack of many hydropower stations. The floating type sewage blocking row is generally adopted in China, and when the floating type sewage blocking row is designed in the current similar engineering, the floating type sewage blocking row is designed according to supporting points at two ends of the floating type sewage blocking row, and the floating type sewage blocking row is mainly divided into two types, namely a fixed type sewage blocking row and a vertical lifting type sewage blocking row. The two-end supporting fixed floating type trash rack is simple in structure and convenient to construct, but can only be used under the condition of small amplitude of the water level of the reservoir, at the moment, gaps are inevitably formed at the two ends, and part of floaters can flow to the water inlet from the gaps; the vertical lifting movable floating type trash can vertically lift along with the change of the reservoir water level under the condition of larger change of the reservoir water level by means of the vertical travelling trolley arranged in the fixed pier concave type rails at the two ends, and gaps are not formed at the two ends of the supporting point, but the vertical travelling trolley needs to control the lifting or descending amplitude by using an automatic control device according to the change of the reservoir water level, so that the trash can be prevented from being immersed in water or suspended in the air due to the lifting of the reservoir water level. Most domestic hydropower stations adopt fixed trash bars, and the trash bars are characterized in that one end of each trash bar is fixed on a flood discharge gate pier between the plant dams, the other end of each trash bar is fixed at a far upstream position, a small angle is formed between the trash bars and the water flow direction, and hydraulic impact of trash on the trash bars is reduced. The dirt blocking row generally has no navigation function, and a certain link in the fixed steel wire rope is required to be manually untied under special conditions to realize navigation. In addition, the dirt blocking row does not have the function of executing tasks by moving to other water areas in the warehouse area at any time according to the requirement.
At present, the labor is relied on to clean floating garbage in a warehouse area, the working efficiency is low, the labor cost is high, the requirement for maintaining the water environment in the warehouse area is difficult to meet, and the requirement for developing mobile emergency deslagging work is particularly difficult to meet. Moreover, when the dirt blocking row is cleaned, workers cannot land for a long time, and accidents are easily caused by fatigue operation, so that the safety of the workers is endangered. This is an urgent need for a stable, convenient rest platform that provides the appropriate rest room for the staff.
The prior floating blocking device of water conservancy facilities such as reservoirs comprises a Zhang Yuqiao et al patent CN203475401U simple floating blocking device, wherein adjustable main ropes are hung on two sides of water, the main ropes are connected with a buoyancy tank on the water surface through retaining rings, the lower part of the buoyancy tank is connected with a grid, and the grid is fixed on the water surface through the tension of the main ropes and the buoyancy of the buoyancy tank, so that the effect of blocking floaters is achieved;
cao Guangrong et al, patent CN203247560U solid float rubber float bars, in which rubber barrels are connected in series by anchor ropes of adjustable length, and the device floats on the water surface by means of the buoyancy of the rubber barrels for treating floats;
the utility model patent CN203755248U of Chen Qichun, li Banggong is a sliding type float blocking device, a plurality of float boxes are connected into a whole by cross hinges to form a float box assembly, a trolley is arranged in a pre-buried chute on two sides or a dam side, two ends of the float box assembly are connected with the trolley by the cross hinges, the whole set of float blocking device can automatically adapt to the change of water level, the height of the float blocking device is adjusted, and the float blocking device has better working performance;
huang Bensheng, liu Da et al, patent CN202899089U, is a liftable rigid float blocking system for a water inlet of a large power station, and is connected with a float member by using at least one rigid long straight member, so as to float on the water surface in a transverse state to block the float, wherein the float is a whole float blocking assembly which can be changed along with the water level, the rigid long straight member makes the whole assembly not easy to be broken by water, and the large float can be guided to flow to the downstream of the power station by means of the rigidity of the floating member;
the utility model patent CN204385710U of Zhou Ran, zhou Xinjing blocks the floating device in two directions, block the floating material and underwater pollution impurity to realize the water surface of two water flow directions of front and back through two symmetrically set up two directions to block the floating unit in two directions, because the whole device is the symmetrical structure of rhombus, the system is relatively stable while working, have longer life;
the utility model patent CN204674793U of Huang Hongbo, yang Yaqi is a lifting type ship passing device, lifting pontoons are arranged at two ends of a water surface blocking net, the pontoons are connected with sliding blocks on a concrete pier chute on the shore, the lifting of the blocking net is controlled through a hydraulic station, when a ship is present, the blocking net is lifted to provide passage, and the blocking net is lowered to intercept floaters at other times, so that the capability of providing the passage of the ship and the interception of the floaters is not provided;
as known from many patents, many float devices do not have the ability to navigate a ship; some can provide navigation, but cannot intercept floats when providing navigation, such as CN204674793U of Huang Hongbo et al, a lifting type ship passing device; when a certain part of the float blocking device is damaged, the float blocking device needs to be stopped for maintenance and even overall replacement, so that the maintenance difficulty is increased; based on humanized consideration, a plurality of float blocking devices do not mention devices or methods for workers to have a short rest; there is a great need for a floating system that is easy to maintain, low cost, and has a navigable floating platform.
Disclosure of Invention
The utility model summarizes the disadvantages of fixed type and vertical lifting type, and provides a novel floating blocking device which can adapt to larger water level change, satisfies movable dirt blocking and opens a front array for an algae removal cleaning field; the device has navigation capability during operation, and meets the requirements of inspection, algae removal and slag removal in a warehouse area; the modular design is simple in structure, rapid in construction and convenient to maintain; the investment is small and the risk is low.
The utility model adopts the technical scheme that:
the simple floating blocking device for the floating island type reservoir comprises a floating island system and a traction anchoring system, wherein the floating island system is connected to two banks through the traction anchoring system;
the floating island system comprises a navigation floating platform and a plurality of floating islands; each floating island is formed by splicing a plurality of high-strength polyethylene barrels; the floating islands are linked through a linking component; the navigation floating platform is arranged in the middle of the floating island system and comprises a ship lock and two floating boxes, the ship lock is formed by splicing a plurality of high-strength polyethylene barrels, the two floating boxes are respectively connected with the floating islands at the two sides, and the two ends of the ship lock are respectively connected with the two floating boxes in an openable and closable manner; the bottom of the upstream side of the floating island system is provided with a screen plate for intercepting floaters;
the traction anchoring system comprises an upstream fixed anchor pier, a downstream fixed anchor pier, an upstream linking cable and a downstream linking cable on two banks; one end of the floating island system is connected with the upstream fixed anchor pier and the downstream fixed anchor pier through an upstream linking cable and a downstream linking cable respectively, and the other end of the floating island system is connected to the opposite bank in the same way.
Preferably, the connecting members between the floating islands are connecting bolts, nylon ropes, fasteners and the like, the connecting positions between the floating islands and the floating islands are the connecting bolts facing the upstream side, and other connecting positions are connected with the fasteners by adopting the nylon ropes.
Preferably, the high-strength polyethylene barrel in the middle of each floating island can be replaced by a filter plate for filtering the salvaged floating objects.
Preferably, the bottom of the downstream side of the floating island system is also hung with a balance weight, and the mass of the balance weight can be properly adjusted according to the impact force of water and the slag content in the water.
Preferably, the two sides of the upper surface of the floating island system, which face the water, are provided with the railings and are connected by nylon ropes, so that the safety operation of workers is guaranteed.
Preferably, the buoyancy tank is a floating body made of steel plate.
Preferably, the navigation floating platform is also provided with a rest pavilion which is arranged on the floating box, the rest pavilion is provided with a shed roof, the rest pavilion is made of 140 channel steel, and the shed roof is made of a light material which can be rolled out and can be folded when necessary.
The working process comprises the following steps: the whole floating island system is formed by connecting a plurality of floating islands into a straight shape, the floating islands are fixed by traction anchor fixing systems on two sides, and a navigation floating platform is arranged in the middle. The water flow flows from the upstream to the downstream, the carried floaters are intercepted by the screen plate at the bottom side of the floating island system, when the interception amount is within a certain degree (within a safety coefficient), manual slag removal is needed, and workers can work on the floating island system. When the navigation is needed, the movable connection between the ship lock of the navigation floating platform and the buoyancy tank is opened, so that the ship can pass, and the buoyancy tank provides larger buoyancy for the whole navigation floating platform; the rest pavilion provides temporary rest places for workers and also provides certain tensile capacity for the navigation floating platform.
The utility model has the advantages that:
1. compared with domestic floating type sewage blocking rows, the floating island type simple floating device for the reservoir has the advantages that the length of the floating island type simple floating device can be changed by adding and subtracting the number of floating islands according to the change of the water level, and meanwhile, the upstream cables and the downstream cables can be adjusted, so that the problem that gaps exist at two ends of the common sewage blocking rows when the water level amplitude of the reservoir is large is solved;
2. the floating islands are movably linked through connecting bolts, nylon ropes and the like, so that the whole floating blocking device has the characteristics of transverse flexibility and longitudinal flexibility, and the impact from water flow and sundries can be reduced through deformation on flowing water surface, thereby improving the capability of resisting water flow impact;
3. side turnover may occur due to impact of water flow and increase of resistance when floating objects are accumulated, and in order to prevent such accidents, a counter weight is hung at the bottom of one side facing downstream, and the mass of the counter weight can be properly adjusted according to the impact force of water and the slag content in water;
4. the navigation floating platform is arranged, so that the ship can pass while blocking the float;
5. the device is provided with an operation platform for floating bridges and slag dragging, and is provided with a railing, so that the safety operation of workers is guaranteed, and a rest platform is provided for the workers;
6. because the modularized design is adopted, the investment and the installation cost are lower, when a certain part of the modules fails, the whole set of the modules are not required to be replaced, and only the corresponding modules or the polyethylene barrel is required to be replaced, so that the operation cost and the maintenance cost are greatly reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of a single floating island structure;
FIG. 3 is a schematic side view of the floating island system 4;
fig. 4 is a schematic view of the structure of the navigable floating platform 7.
In the figure: the system comprises a 1-upstream fixed anchor pier, a 2-downstream fixed anchor pier, a 3-upstream linking cable, a 4-floating island system, a 5-floating box, a 6-downstream linking cable, a 7-navigation floating platform, an 8-high-strength polyethylene barrel, 9-railings, 10-filter plates, 11-nylon ropes, 12-balance weights, 13-screen plates, 14-ship locks, 15-rest pavilions and 16-shed roofs.
Detailed Description
The utility model will be described in further detail with reference to the drawings and examples, which are simplified schematic illustrations of the basic structure of the utility model, which are presented only by way of illustration, and thus show only the structures that are relevant to the utility model.
Example 1
As shown in fig. 1 to 4, a simple floating blocking device for a floating island type reservoir comprises a floating island system 4 and a traction anchor fixing system, wherein the floating island system 4 is connected to two banks through the traction anchor fixing system;
the floating island system 4 comprises a navigation floating platform 7 and a plurality of floating islands; each floating island is formed by splicing a plurality of high-strength polyethylene barrels 8; the floating islands are linked through a linking component, a connecting bolt is adopted on the upstream side, and other connecting parts are connected with the fastener through nylon ropes; the navigation floating platform 7 is arranged in the middle of the floating island system 4, the navigation floating platform 7 comprises a ship lock 14 and two floating boxes 5, the ship lock 14 is formed by splicing a plurality of high-strength polyethylene barrels 8, the floating boxes 5 are floating bodies made of steel plates, the two floating boxes 5 are respectively connected with the floating islands at the two sides, and the two ends of the ship lock 14 are respectively connected with the two floating boxes 5 in an openable and closable manner; the bottom of the floating island system 4, which faces the upstream side, is provided with a stainless steel net plate 13;
the traction anchoring system comprises an upstream fixed anchor pier 1, a downstream fixed anchor pier 2, an upstream link cable 3 and a downstream link cable 6 on two banks; the floating island system 4 is connected at one end to the upstream and downstream fixed piers 1 and 2 by an upstream and a downstream linking line 3 and 6, respectively, and at the other end to the opposite shore in the same way.
Example 2
The present embodiment has substantially the same structure as embodiment 1, except that in the present embodiment, the high-strength polyethylene tub 8 in the middle of each floating island is replaced with a stainless steel filter plate 10.
Example 3
The present embodiment is basically the same as embodiment 1 in structure, except that in this embodiment, a counterweight 12 is hung at the bottom of the downstream-facing side of the floating island system 4.
Example 4
The present embodiment has substantially the same structure as embodiment 1, except that in this embodiment, rails 9 are installed on both sides of the upper surface of the floating island system 4 facing the water and are connected by nylon ropes 11.
Example 5
The structure of this embodiment is basically the same as that of embodiment 1, except that in this embodiment, the navigable floating platform 7 is further provided with a rest pavilion 15, the rest pavilion 15 is disposed on the buoyancy tank 5, the rest pavilion 15 is provided with a canopy top 16, the rest pavilion 15 is made of 140 channel steel, and the canopy top 16 is made of a light material capable of being rolled up.
Claims (4)
1. The simple floating blocking device for the floating island type reservoir comprises a floating island system (4) and a traction anchoring system, wherein the floating island system (4) is connected to two banks through the traction anchoring system;
the floating island system (4) comprises a navigation floating platform (7) and a plurality of floating islands; each floating island is formed by splicing a plurality of high-strength polyethylene barrels (8); the floating islands are linked through a linking component; the navigation floating platform (7) is arranged in the middle of the floating island system (4), the navigation floating platform (7) comprises a ship lock (14) and two floating boxes (5), the ship lock (14) is formed by splicing a plurality of high-strength polyethylene barrels (8), the two floating boxes (5) are respectively connected with the floating islands at the two sides, and the two ends of the ship lock (14) are respectively connected with the two floating boxes (5) in an openable and closable manner; the bottom of the floating island system (4) facing the upstream side is provided with a screen plate (13);
the traction anchoring system comprises an upstream fixed anchor pier (1), a downstream fixed anchor pier (2), an upstream linking cable (3) and a downstream linking cable (6) on two banks; one end of the floating island system (4) is connected with the upstream fixed anchor pier (1) and the downstream fixed anchor pier (2) through an upstream linking cable (3) and a downstream linking cable (6) respectively, and the other end is connected to the opposite bank in the same way;
the high-strength polyethylene barrel (8) in the middle of each floating island is replaced by a filter plate (10);
a rest pavilion (15) is further arranged on the navigation floating platform (7), the rest pavilion (15) is arranged on the two buoyancy tanks (5), and a canopy top (16) is arranged on the rest pavilion (15);
the connecting members between the floating islands are connecting bolts, nylon ropes and fasteners, the connecting parts between the floating islands and the floating islands are connected to the upstream side by adopting the connecting bolts, and the other connecting parts are connected with the fasteners by adopting the nylon ropes;
the rest pavilion (15) is made of 140 channel steel, and the canopy (16) is made of a light material which can be rolled out.
2. The floating island type reservoir simple floating blocking device according to claim 1, wherein a counter weight (12) is hung at the bottom of the downstream side of the floating island system (4).
3. The floating island type reservoir simple floating blocking device according to claim 1, wherein the two sides of the upper surface of the floating island system (4) facing water are provided with the railings (9) and are connected by nylon ropes (11).
4. The floating island type reservoir simple floating blocking device according to claim 1, wherein the floating box (5) is a floating body made of steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810004342.9A CN108035326B (en) | 2018-01-03 | 2018-01-03 | Floating island type reservoir simple blocking and floating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810004342.9A CN108035326B (en) | 2018-01-03 | 2018-01-03 | Floating island type reservoir simple blocking and floating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108035326A CN108035326A (en) | 2018-05-15 |
| CN108035326B true CN108035326B (en) | 2023-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810004342.9A Active CN108035326B (en) | 2018-01-03 | 2018-01-03 | Floating island type reservoir simple blocking and floating device |
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| CN (1) | CN108035326B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411875B (en) * | 2018-01-16 | 2020-04-14 | 中国科学院南京地理与湖泊研究所 | Method for anchoring bottom of enclosure |
| CN110984095B (en) * | 2019-12-12 | 2021-08-20 | 中国电建集团中南勘测设计研究院有限公司 | Float blocking facility |
| CN113279376A (en) * | 2021-04-23 | 2021-08-20 | 刘春林 | Foreign matter classification and collection device for dam |
| CN114319270A (en) * | 2022-01-25 | 2022-04-12 | 中国电建集团成都勘测设计研究院有限公司 | Float blocking device and arrangement structure thereof |
| CN114853178A (en) * | 2022-05-27 | 2022-08-05 | 江西农业大学 | Modularized water purification ecological floating island |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200971490Y (en) * | 2006-11-21 | 2007-11-07 | 黄怀炜 | Powerless self-float sewage arresting floating raft |
| CN101219706A (en) * | 2008-01-18 | 2008-07-16 | 许是勇 | Ecological landscape float island |
| CN203569550U (en) * | 2013-11-13 | 2014-04-30 | 陕西罗克环保科技有限公司 | Pollutant barrier and collection device for protection of water source region |
| CN203701041U (en) * | 2014-01-08 | 2014-07-09 | 江苏省灌溉总渠管理处 | Rear-mounted ship intercepting device |
| CN207891846U (en) * | 2018-01-03 | 2018-09-21 | 昆明理工大学 | A kind of floating-island type reservoir simply blocks bleaching device |
-
2018
- 2018-01-03 CN CN201810004342.9A patent/CN108035326B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200971490Y (en) * | 2006-11-21 | 2007-11-07 | 黄怀炜 | Powerless self-float sewage arresting floating raft |
| CN101219706A (en) * | 2008-01-18 | 2008-07-16 | 许是勇 | Ecological landscape float island |
| CN203569550U (en) * | 2013-11-13 | 2014-04-30 | 陕西罗克环保科技有限公司 | Pollutant barrier and collection device for protection of water source region |
| CN203701041U (en) * | 2014-01-08 | 2014-07-09 | 江苏省灌溉总渠管理处 | Rear-mounted ship intercepting device |
| CN207891846U (en) * | 2018-01-03 | 2018-09-21 | 昆明理工大学 | A kind of floating-island type reservoir simply blocks bleaching device |
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| Publication number | Publication date |
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| CN108035326A (en) | 2018-05-15 |
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