CN105369788A - Floating type two-layer flexible net trash-holding wave-reducing ecological grid device - Google Patents
Floating type two-layer flexible net trash-holding wave-reducing ecological grid device Download PDFInfo
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- CN105369788A CN105369788A CN201510786680.9A CN201510786680A CN105369788A CN 105369788 A CN105369788 A CN 105369788A CN 201510786680 A CN201510786680 A CN 201510786680A CN 105369788 A CN105369788 A CN 105369788A
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- China
- Prior art keywords
- ecological grid
- dirt
- disappear
- layer flexible
- pedestal
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Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 58
- 239000010959 steel Substances 0.000 claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 9
- 239000010935 stainless steel Substances 0.000 claims abstract description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 33
- 230000000903 blocking effect Effects 0.000 claims description 9
- 239000004677 Nylon Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 229920001778 nylon Polymers 0.000 claims description 8
- 239000004952 Polyamide Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 229920002647 polyamide Polymers 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 5
- 239000011435 rock Substances 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 4
- 238000005098 hot rolling Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 239000004746 geotextile Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 241000216843 Ursus arctos horribilis Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment
- E02B3/062—Constructions floating in operational condition, e.g. breakwaters or wave dissipating walls
-
- 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
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a floating type two-layer flexible net trash-holding wave-reducing ecological grid device. The floating type two-layer flexible net trash-holding wave-reducing ecological grid device comprises buoy balls and a trash-holding wave-reducing ecological grid which is vertically arranged. The lower end of the trash-holding wave-reducing ecological grid is fixed to a first locating base at the water bottom through bottom hooks. The upper end of the trash-holding wave-reducing ecological grid is connected with the buoy balls through hooks at the bottoms of the buoy balls. The side edges of the trash-holding wave-reducing ecological grid are connected with steel tubes through stainless steel hanging rings and can slide up and down along with the water level. The steel tubes are fixed to locating bases. The first locating base and the second locating base are formed by pouring concrete. The bottom hooks and steel bar hooks are buried in the first locating base and the second locating base respectively. The buoy balls are adopted for the top of the floating type two-layer flexible net trash-holding wave-reducing ecological grid device, so that trash-holding wave-reducing nets are floated. Floating objects on the surface of a water stream can be held, so that subsequent cleaning is facilitated, and the ecological grid device can work under different water-level circumstances. The trash-holding wave-reducing ecological grid is inserted into the two layers of bag-type flexible nets, convenient to use and can be inserted and pulled out.
Description
Technical field
The invention belongs to dirt cleaner technical field, relate to that a kind of floatation type Double-layer flexible is netted to be blocked dirt and to disappear unrestrained ecological grid device.
Background technology
Existingly block dirty facility and mainly contain trashrack, before being located at water inlet, for blocking the frame grating structure of the foreign material (generally claiming dirt) such as pasture and water, drift wood of water-borne, trashrack is by frame, diaphragm and grizzly bar are formed, and are bearing on concrete pier wall, generally manufacture with steel.Interval of grid strip is according to dirt size, how many and use and require and determine.
The facility of existing major part interception floater mostly is fixed, and installing/dismounting is loaded down with trivial details, and not strong to different water level compliance, not good to the suspension pollutant interception result in water body, during periodic cleaning pollutant, engineering quantity is large, and clearing times is comparatively frequent, wastes a large amount of manpower, material resources and financial resources.On the other hand, the abatement ability for waves such as ship waves on the water surface is not obvious.
Summary of the invention
The object of this invention is to provide that a kind of floatation type Double-layer flexible is netted to be blocked dirt and to disappear unrestrained ecological grid device, solve exist in prior art to block dirty device strong and to the inadequate problem of the abatement ability of wave to the practicality of different water level.
The technical solution adopted in the present invention is, a kind of floatation type Double-layer flexible is netted to be blocked dirt and to disappear unrestrained ecological grid device, comprise buoy ball and the dirt of blocking that vertically arranges disappears unrestrained ecological grid, described the disappear lower end of unrestrained ecological grid of dirt of blocking is fixed on the concrete block on water-bed pedestal top by end hook, described in block the disappear upper end of unrestrained ecological grid of dirt and be connected with buoy ball with the closed safety hook of bottom by the lacing hole of buoy ball center.
Feature of the present invention is also,
Further, block the disappear both sides of unrestrained ecological grid of dirt and be connected with hot rolled seamless steel tube by stainless steel annulus, described hot rolled seamless steel tube is fixed on pedestal.
Further, block the dirt unrestrained ecological grid that disappear and be made up of plural double-deck pocket type flexible net, each double-deck pocket type flexible net is linked together by stainless steel annulus, and the junction of described double-deck pocket type flexible net is provided with laterally to be strengthened rope and longitudinally strengthens rope.
Further, the top of hot rolled seamless steel tube is provided with the hollow caution mound of concrete of square shape, the hollow caution mound inner vertical of described concrete is provided with the joint bar of more than two, the bottom level of the hollow caution mound of described concrete is welded with the steel plate that binds, the external side parallel of described hot rolled seamless steel tube arranges H profile steel, described H profile steel connects bind steel plate and pedestal, the bottom of described H profile steel is triangular in shape fixing by two channel-section steels, the bottom that described channel-section steel is embedded in pedestal is welded with anchor plate, the part of horizontal exposing pedestal bottom described H profile steel arranges and is welded with steel plate, the part of horizontal being embedded in pedestal bottom described H profile steel is provided with welded reinforcement mesh sheet, the lower horizontal of described H profile steel and hot rolled seamless steel tube is welded with Plate Welding back cover.
Further, laterally strengthen polyamide fibre 600 nylon rope of rope for Φ 20, longitudinally strengthen polyamide fibre 1000 nylon rope of rope for Φ 20.
Further, block the disappear centre of unrestrained ecological grid of dirt and be provided with sandwich material.
Further, pedestal is disposed with concrete block from top to bottom, cemented rock layer and hardcore bed, and described concrete block is arranged on the centre position of pedestal upper surface, links up with for the fixing end.
Further, plural jackstone band is provided with in pedestal and under water regardless of dispersion concrete pouring.
The invention has the beneficial effects as follows, this blocks the dirt unrestrained facility that disappears will regulate water quality exchanges between adjacent water system, by adjusting the porosity of facility, its permeability rate maintains about 10%, effectively can eliminate side, canal shipping agency water wave or wave humorously, the suspensions such as side, canal silt can be filtered again, and facility both sides can not form obvious water-head, maintain stability and the safety of whole facility, this facility at utmost reduces the impact of Canal-water on adjacent water body in lake.
Block the dirt unrestrained device top that disappears and adopt polyethylene buoy ball, allow and block the dirt unrestrained facility that disappears and suspend, the floating thing can tackling water surface is convenient to follow-up cleaning, and can work under different water level conditions.Wherein block the dirt unrestrained ecological grid that disappear and inject double-deck pocket type flexible net, easy to use, pluggable.One of this flexible net is characterized as greatly can eliminate waves of ship, and the wave effect of bridge (history relic) is with by the boats and ships namely can eliminated inside Grand Canal to side treasured.
Block the dirt material disappeared in unrestrained facility and there is outstanding filtration, draining, isolation, reinforcement, antiseepage, protective action, have lightweight, tensile strength is high, good penetrability, high temperature resistant, anti-freezing, ageing-resistant, corrosion resistant characteristic, good to the interception result of the suspension pollutant in water body.
The wave that wherein disappears blocks dirty ecological grid, to dissipating and tackling waves of ship and stormy waves Be very effective.Intermediate sandwich material selects geotextiles by experiment.Geotextiles is inert carrier, has outstanding filtration, drainability, obvious to the interception result of dirt, also stronger to the elimination ability of wave.
Accompanying drawing explanation
To be that a kind of floatation type of the present invention Double-layer flexible is netted block dirt and to disappear the structure chart of unrestrained ecological grid device under deep water state Fig. 1.
To be that a kind of floatation type of the present invention Double-layer flexible is netted block dirt and to disappear the structure chart of unrestrained ecological grid device under shallow water state Fig. 2.
To be that a kind of floatation type of the present invention Double-layer flexible is netted block dirt and to disappear the lateral view of unrestrained ecological grid device Fig. 3.
To be that a kind of floatation type of the present invention Double-layer flexible is netted block dirt and to disappear the facility joint pin schematic diagram of unrestrained ecological grid device Fig. 4.
To be that a kind of floatation type of the present invention Double-layer flexible is netted block dirt and to disappear the partial enlarged drawing of facility joint pin of unrestrained ecological grid device Fig. 5.
To be that a kind of floatation type of the present invention Double-layer flexible is netted block dirt and to disappear the facility joint pin position view of unrestrained ecological grid device Fig. 6.
In figure, 1. buoy ball, 2. closed safety hook, 3. double-deck pocket type flexible net, 4. block dirty ecology to disappear unrestrained grid, 5. laterally strengthen nylon rope, 6. vertically strengthen nylon rope, 7. lacing hole, 8. sandwich material, 9. end hook, 10. concrete block, 11. cemented rock layers, 12. hardcore beds, the hollow caution mound of 13. concrete, 14. joint bars, 15. bind steel plate, 16.H shaped steel, 17. hot rolled seamless steel tubes, 18. channel-section steels, 19. are welded with steel plate, 20. reinforced mesh, 21. anchor plates, 22. Plate Welding back covers, 23. jackstone bands, 24. under water regardless of dispersion concrete pouring, 25. stainless steel annulus, 26. pedestals.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
To be that a kind of floatation type Double-layer flexible is netted block dirt and to disappear unrestrained ecological grid device in the present invention, structure is as shown in Fig. 1 ~ Fig. 6, comprise buoy ball 1 and the dirt of blocking that vertically arranges disappears unrestrained ecological grid 4, blocking the disappear lower end of unrestrained ecological grid 4 of dirt 9 is fixed on the concrete block 10 on water-bed pedestal 26 top by end hook, described in block the disappear upper end of unrestrained ecological grid 4 of dirt and be connected with buoy ball 1 with the closed safety hook 2 of bottom by the lacing hole 7 at buoy ball 1 center.
Block the disappear both sides of unrestrained ecological grid 4 of dirt to be connected with hot rolled seamless steel tube 17 by stainless steel annulus 25, described hot rolling is seamless, and steel 17 pipe is fixed on pedestal 26.
Block the dirt unrestrained ecological grid 4 that disappear to be made up of plural double-deck pocket type flexible net 3, each double-deck pocket type flexible net 3 is linked together by stainless steel annulus 25, and the junction of described double-deck pocket type flexible net 3 is provided with laterally to be strengthened rope 5 and longitudinally strengthens rope 6.
The top of hot rolled seamless steel tube 17 is provided with the hollow caution mound 13 of concrete of square shape, concrete hollow caution mound 13 inner vertical is provided with the joint bar 14 of more than two, the bottom level of the hollow caution mound 13 of concrete is welded with the steel plate 15 that binds, the external side parallel of hot rolled seamless steel tube 17 arranges H profile steel 16, H profile steel 16 connects bind steel plate 15 and pedestal 26, the bottom of H profile steel 16 is triangular in shape fixing by two channel-section steels 18, the bottom that channel-section steel 18 is embedded in pedestal 26 is welded with anchor plate 21, the part of horizontal exposing pedestal 26 bottom H profile steel 16 arranges and is welded with steel plate 19, the part of horizontal being embedded in pedestal 26 bottom H profile steel 16 is provided with welded reinforcement mesh sheet 20, the lower horizontal of H profile steel 16 and hot rolled seamless steel tube 17 is welded with Plate Welding back cover 22.
Laterally strengthen polyamide fibre 600 nylon rope that rope 5 is Φ 20, described longitudinally reinforcement rope 6 is polyamide fibre 1000 nylon rope of Φ 20.
Pedestal 26 is disposed with concrete block 10 from top to bottom, cemented rock layer 11 and hardcore bed 12, and described concrete block 10 is arranged on the centre position of pedestal 26 upper surface, for hook of the fixing end 9.
Plural jackstone band 23 is provided with and under water regardless of dispersion concrete pouring 24 in pedestal 26
To be that a kind of floatation type Double-layer flexible is netted block dirt and to disappear unrestrained ecological grid device in the present invention, and blocking the dirt unrestrained ecological grid 4 that disappear has three kinds of models:
(1) wave that disappears block dirty ecological grid 4 topmost three layers or four layers be adopt the upstream face wave that disappears to block dirty ecological grid (thick 80mm)+sandwich material (2mm)+back side wave that disappears and block dirty ecological grid (thick 20mm), corresponding product model: RD-WBJ, size: 300 × 500 × 102mm.
(2) all the other lower floors adopt the upstream face wave that disappears to block dirty ecological grid (thick the 80mm)+back side wave that disappears and block dirty ecological grid (thick 20mm), corresponding product model: RD-WB, size: 300 × 500 × 100mm.
(3) orlop adopts the upstream face wave that disappears to block dirty ecological grid (thick the 80mm)+back side wave that disappears and block dirty ecological grid (thick 20mm), model: RD-WZ, size: 150 × 500 × 100mm.
Buoy ball 1 is floating all the time in water surface, when water level raises, block the dirt unrestrained ecological grid 4 that disappear and be straightened under the effect of buoy ball 1 buoyancy, when the water level descends, block the dirt unrestrained ecological grid 4 that disappear to fold up from bottom to top under the effect of self gravitation, to guarantee that buoy ball 1 floats on water surface.Block the disappear side of unrestrained ecological grid 4 of dirt to be connected with hot rolled seamless steel tube 17 by stainless steel ring 25, the position of assurance device can not before and after rock.
A kind of floatation type of the present invention Double-layer flexible is netted to be blocked dirt and to disappear unrestrained ecological grid device, the unrestrained trash block system that disappears formation one ecology, adjustable, there is certain purification function, farthest can reduce pollution of estuary, and the impact of river water wave can be eliminated, maintain the relatively stable smoothness of river water body long duration.
Claims (8)
1. a floatation type Double-layer flexible is netted blocks dirt and to disappear unrestrained ecological grid device, it is characterized in that, comprise buoy ball (1) and the dirt of blocking that vertically arranges disappears unrestrained ecological grid (4), described the disappear lower end of unrestrained ecological grid (4) of dirt of blocking is fixed on the concrete block (10) on water-bed pedestal (26) top by end hook (9), described in block the disappear upper end of unrestrained ecological grid (4) of dirt and be connected with buoy ball (1) with the closed safety hook (2) of bottom by the lacing hole (7) at buoy ball (1) center.
2. a kind of floatation type Double-layer flexible according to claim 1 is netted blocks dirt and to disappear unrestrained ecological grid device, it is characterized in that, described the disappear both sides of unrestrained ecological grid (4) of dirt of blocking are connected with hot rolled seamless steel tube (17) by stainless steel annulus (25), and described hot rolling is seamless, and steel (17) pipe is fixed on pedestal (26).
3. a kind of floatation type Double-layer flexible according to claim 2 is netted blocks dirt and to disappear unrestrained ecological grid device, it is characterized in that, describedly block the dirt unrestrained ecological grid (4) that disappear and be made up of plural double-deck pocket type flexible net (3), each double-deck pocket type flexible net (3) is linked together by stainless steel annulus (25), and the junction of described double-deck pocket type flexible net (3) is provided with laterally to be strengthened rope (5) and longitudinally strengthens restricting (6).
4. a kind of floatation type Double-layer flexible according to claim 2 is netted blocks dirt and to disappear unrestrained ecological grid device, it is characterized in that, the top of described hot rolled seamless steel tube (17) is provided with the hollow caution mound of concrete (13) of square shape, the hollow caution mound of described concrete (13) inner vertical is provided with the joint bar (14) of more than two, the bottom level of the hollow caution mound of described concrete (13) is welded with the steel plate that binds (15), the external side parallel of described hot rolled seamless steel tube (17) arranges H profile steel (16), described H profile steel (16) connects bind steel plate (15) and pedestal (26), the bottom of described H profile steel (16) is triangular in shape fixing by two channel-section steels (18), the bottom that described channel-section steel (18) is embedded in pedestal (26) is welded with anchor plate (21), the part of horizontal setting that pedestal (26) is exposed in described H profile steel (16) bottom is welded with steel plate (19), the part of horizontal that described H profile steel (16) bottom is embedded in pedestal (26) is provided with welded reinforcement mesh sheet (20), the lower horizontal of described H profile steel (16) and hot rolled seamless steel tube (17) is welded with Plate Welding back cover (22).
5. a kind of floatation type Double-layer flexible according to claim 3 is netted blocks dirt and to disappear unrestrained ecological grid device, it is characterized in that, described transverse direction is strengthened restricting polyamide fibre 600 nylon rope that (5) are Φ 20, and described longitudinal direction is strengthened restricting polyamide fibre 1000 nylon rope that (6) are Φ 20.
6. a kind of floatation type Double-layer flexible according to claim 3 is netted blocks dirt and to disappear unrestrained ecological grid device, it is characterized in that, described in block the disappear centre of unrestrained ecological grid (4) of dirt and be provided with sandwich material (8).
7. a kind of floatation type Double-layer flexible according to claim 1 is netted blocks dirt and to disappear unrestrained ecological grid device, it is characterized in that, described pedestal (26) is disposed with concrete block (10) from top to bottom, cemented rock layer (11) and hardcore bed (12), described concrete block (10) is arranged on the centre position of pedestal (26) upper surface, for fixing end hook (9).
8. a kind of floatation type Double-layer flexible according to claim 6 is netted blocks dirt and to disappear unrestrained ecological grid device, it is characterized in that, is provided with plural jackstone band (23) and under water regardless of dispersion concrete pouring (24) in described pedestal (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510786680.9A CN105369788B (en) | 2015-11-17 | 2015-11-17 | A kind of floatation type Double-layer flexible is netted to be blocked dirt and disappears unrestrained ecological grid device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510786680.9A CN105369788B (en) | 2015-11-17 | 2015-11-17 | A kind of floatation type Double-layer flexible is netted to be blocked dirt and disappears unrestrained ecological grid device |
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| Publication Number | Publication Date |
|---|---|
| CN105369788A true CN105369788A (en) | 2016-03-02 |
| CN105369788B CN105369788B (en) | 2017-11-07 |
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| CN201510786680.9A Active CN105369788B (en) | 2015-11-17 | 2015-11-17 | A kind of floatation type Double-layer flexible is netted to be blocked dirt and disappears unrestrained ecological grid device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842001A (en) * | 2017-09-27 | 2018-03-27 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of tidal river unrestrained garbage barrier net that disappears |
| CN108040943A (en) * | 2017-12-15 | 2018-05-18 | 浙江海洋大学 | A kind of landscape dykes and dams seining cultivation device |
| CN113387448A (en) * | 2021-07-30 | 2021-09-14 | 中国水产科学研究院黑龙江水产研究所 | Ecological floating bed fixing device of lake wetland water |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972872A (en) * | 2018-11-27 | 2019-07-05 | 定州康拓科技有限公司 | Unrestrained system is manually made with bilateral suspension protective device |
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| CN108040943A (en) * | 2017-12-15 | 2018-05-18 | 浙江海洋大学 | A kind of landscape dykes and dams seining cultivation device |
| CN113387448A (en) * | 2021-07-30 | 2021-09-14 | 中国水产科学研究院黑龙江水产研究所 | Ecological floating bed fixing device of lake wetland water |
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| Publication number | Publication date |
|---|---|
| CN105369788B (en) | 2017-11-07 |
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