CN113802525B - Hydroelectric power generation water inlet prevents stifled subassembly based on hydroelectric power generation sets up - Google Patents
Hydroelectric power generation water inlet prevents stifled subassembly based on hydroelectric power generation sets up Download PDFInfo
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- CN113802525B CN113802525B CN202111108698.5A CN202111108698A CN113802525B CN 113802525 B CN113802525 B CN 113802525B CN 202111108698 A CN202111108698 A CN 202111108698A CN 113802525 B CN113802525 B CN 113802525B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/08—Details, e.g. gates, screens
- E02B5/085—Arresting devices for waterborne materials, e.g. gratings
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Hydraulic Turbines (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a hydroelectric generation water inlet anti-blocking assembly based on hydroelectric generation setting, and relates to the technical field of anti-blocking structures. The water-permeable filtering device comprises an installation disc, wherein an inner filtering cone is fixed at the center of a circle on one surface of the installation disc through a bolt, an outer filtering cone which covers the outer part of the inner filtering cone is fixed on one surface of the installation disc, the inner filtering cone and the outer filtering cone are coaxially arranged, water permeable holes are formed in the outer conical surfaces of the inner filtering cone and the outer filtering cone, and rotating shafts penetrate through the axes of the inner filtering cone and the outer filtering cone. The multi-layer intercepting and filtering structure is formed, large-particle silt, floating objects and the like can be intercepted and filtered at the water inlet, the generator set is protected while the near water inlet is prevented from being blocked, the service life of the generator set is prolonged, the outer surface of the inner filtering cone can be cleaned, and the phenomenon that silt and the like are accumulated on the outer surface of the inner filtering cone to cause the blockage of the water permeable hole is avoided.
Description
Technical Field
The invention belongs to the technical field of anti-blocking structures, and particularly relates to a hydroelectric power generation water inlet anti-blocking assembly based on hydroelectric power generation.
Background
The hydroelectric power generation needs to introduce water flow into a hydroelectric generating set as power for driving the generating set to operate, and the water flow contains a large amount of large-particle silt and floating objects, and is directly input into the generating set without being filtered, so that the generating set is easy to block, and the generating set cannot normally operate; and the central direct leading-in generating set of floater in order to prevent a large amount of aquatic and large granule silt of prior art, go out at the hydroelectric power water inlet and set up interception structures such as filter screen mostly, filter water, though can play the filterable effect to the water source, however, the easy gathering on the filter screen of large granule silt, floater under the interception still needs the staff to carry out artifical supplementary salvage, not only takes trouble and difficultly but also has the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The invention aims to provide a hydroelectric generation water inlet anti-blocking assembly based on hydroelectric generation, and solves the problems that an existing hydroelectric generation water inlet is easy to block and an existing blocking structure is poor in blocking effect.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a hydroelectric generation water inlet anti-blocking assembly based on hydroelectric generation setting, which comprises a mounting disc, wherein an inner filtering conical cylinder is fixed on one surface of the mounting disc through bolts, an outer filtering conical cylinder which covers the outer part of the inner filtering conical cylinder is fixed on one surface of the mounting disc, the inner filtering conical cylinder and the outer filtering conical cylinder are coaxially arranged, water permeable holes are respectively formed in the outer conical surfaces of the inner filtering conical cylinder and the outer filtering conical cylinder, a rotating shaft penetrates through the axes of the inner filtering conical cylinder and the outer filtering conical cylinder, a supporting structure and a water flow fan blade are fixed on one section of outer circular surface of the rotating shaft, which is positioned inside the outer filtering conical cylinder, a cleaning structure matched with the outer conical surface of the inner filtering conical cylinder is fixed on the outer circular surface of the rotating shaft, and a floating object blocking structure is fixed at one end of the rotating shaft, which is positioned outside the outer filtering conical cylinder;
the cleaning structure comprises a fixed sleeve sleeved on the outer circular surface of the rotating shaft, a plurality of supporting rods are fixed on the outer circular surface of the fixed sleeve in an annular equidistant mode, extending rods parallel to the outer conical surface of the inner filtering conical cylinder are fixed at one ends, far away from the fixed sleeve, of the supporting rods, a scraping plate and a cleaning soft brush are respectively fixed on two adjacent extending rods, and the bottoms of the scraping plate and the cleaning soft brush are in contact with the outer conical surface of the inner filtering conical cylinder;
one end of the inner filtering conical cylinder is provided with a limit groove matched with the supporting structure; and an expansion plate is fixed on the outer conical surface of the outer filtering conical cylinder.
Furthermore, a first flange is fixed on one end face of the inner filtering cone and fixedly connected with the mounting disc, a second flange is fixed on one end face of the outer filtering cone and fixedly connected with the mounting disc, and mounting holes matched with the bolts are formed in the first flange and the second flange.
Furthermore, a sealing cover is fixed on one end face, provided with a limiting groove, of the inner filtering conical barrel through a screw, and a through hole matched with the rotating shaft is formed in the circle center of the sealing cover.
Furthermore, the supporting structure comprises a shaft sleeve fixedly connected with the rotating shaft, supporting rods are fixed on the outer circular surface of the shaft sleeve at equal intervals, and one end, far away from the shaft sleeve, of each supporting rod is rotatably connected with a roller matched with the limiting groove.
Further, the floater blocks the structure and includes the fixed disk, fixed disk a surface centre of a circle department is fixed with the adapter sleeve with pivot fixed connection, fixed disk another surface centre of a circle department is fixed with the spliced pole, it is connected with and blocks the pole to be the rotation of annular equidistance on the outer disc of fixed disk, it is connected with the resilience pole to be the rotation of annular equidistance on the outer disc of spliced pole, the one end that the spliced pole was kept away from to the resilience pole is rotated with blocking the pole and is connected.
Further, the rebound rod includes the outer tube, outer tube one end is fixed with rotates the first connecting seat of being connected with the spliced pole, the outer tube other end is fixed with the tube cap, it has the buffer beam that extends to the outer tube inside to run through on the tube cap, the buffer beam is located the inside one end of outer tube and is fixed with the spacing dish with outer tube inner chamber complex, the buffer beam is located one section outer disc of outer tube inside and is equipped with the spring, the buffer beam other end is fixed with and blocks the second connecting seat that the pole rotation is connected.
Furthermore, it rotates the connecting pin of being connected with the fixed disk to hinder pole one end to be fixed with, be annular equidistance on the outer disc of fixed disk and be fixed with connecting pin complex swivel mount, it has the go-between with second connecting seat complex to hinder a pole surface mounting.
Furthermore, be annular equidistance on the outer disc of spliced pole and be fixed with the solid fixed ring with first connecting seat cooperation.
The invention has the following beneficial effects:
1. according to the invention, through the combined use of the inner filtering cone, the outer filtering cone, the rotating shaft, the cleaning structure and the floating object blocking structure, a multi-layer blocking and filtering structure is formed, large-particle silt, floating objects and the like can be blocked and filtered at the water inlet, the large-particle silt or floating objects are prevented from directly entering the hydraulic generator set, the generator set is protected while the near water inlet is prevented from being blocked, and the service life of the generator set is prolonged.
2. According to the invention, through the combined use of the rotating shaft, the water flow fan blades and the cleaning structure, the water flow fan blades rotate under the action of water flow to drive the rotating shaft to rotate, so that the cleaning structure fixed on the rotating shaft is driven to rotate, the outer surface of the inner filtering cone is cleaned, and the blockage of a water permeable hole caused by the accumulation of silt and the like on the outer surface of the inner filtering cone is prevented.
3. According to the invention, the floater blocking structure is arranged at one end of the rotating shaft, so that the floater in water can be effectively blocked, the amount of the floater directly impacting the outer filtering cone is reduced, the floater is effectively accumulated on the outer surface of the outer filtering cone, when the interception amount of the floater is large, the blocking rod is bent under the pushing of water flow, and thus the floater blocked by the blocking rod can pass through the blocking rod, and the length of the blocking rod is far away from the diameter of the outer filtering cone, so that the floater passing through the blocking rod can not be attached to the outer filtering cone, and the blockage of the outer filtering cone is effectively avoided.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a hydroelectric power generation water inlet anti-blocking assembly based on hydroelectric power generation setting according to the present invention;
FIG. 2 is a schematic view of another embodiment of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 isbase:Sub>A schematic cross-sectional view taken along line A-A in FIG. 3;
FIG. 5 is an enlarged view of a portion of the structure at A in FIG. 4;
FIG. 6 is a schematic structural diagram of an inner filter cone;
FIG. 7 is a schematic structural diagram of an outer filter cone;
FIG. 8 is a schematic structural view of a cleaning structure;
FIG. 9 is a schematic structural view of a support structure;
FIG. 10 is a schematic view of the structure of the rotating shaft, the supporting structure, the water flow fan blade, and the cleaning structure;
fig. 11 is a structural view of a float blocking structure;
FIG. 12 is a schematic view of the structure of the other side of the float retaining structure;
FIG. 13 is a schematic view of the structure of the fixing disc, the connecting sleeve and the connecting column;
FIG. 14 is a schematic view of the resilient lever;
FIG. 15 is a schematic cross-sectional view of the resilient lever;
fig. 16 is a schematic view of the structure of the arresting bar.
In the drawings, the components represented by the respective reference numerals are listed below:
1-mounting plate, 2-inner filter cone, 201-limiting groove, 202-first flange, 3-outer filter cone, 301-expanding plate, 302-second flange, 4-rotating shaft, 5-supporting structure, 501-shaft sleeve, 502-supporting rod, 503-roller, 6-water flow fan blade, 7-cleaning structure, 701-fixing sleeve, 702-supporting rod, 703-extending rod, 704-scraping plate, 302-cleaning soft brush, 8-floater blocking structure, 801-fixing disk, 802-connecting sleeve, 803-connecting rod, 804-blocking rod, 8041-connecting pin, 8042-connecting ring, 805-rebounding rod, 8051-outer sleeve, 8052-first connecting seat, 8053-pipe cover, 8054-buffering rod, 8055-limiting disk, 8056-spring, 8057-second connecting seat 807, 806-rotating seat, 8051-fixing ring, 9-sealing cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-16, the invention relates to a hydroelectric power generation water inlet anti-blocking assembly based on hydroelectric power generation setting, which comprises a mounting plate 1, wherein an inner filtering cone 2 is fixed on one surface of the mounting plate 1 through bolts, a first flange 202 is fixed on one end surface of the inner filtering cone 2 fixedly connected with the mounting plate 1, a second flange 302 is fixed on one end surface of the outer filtering cone 3 fixedly connected with the mounting plate 1, mounting holes matched with the bolts are respectively formed in the first flange 202 and the second flange 302, a sealing cover 9 is fixed on one end surface of the inner filtering cone 2 provided with a limiting groove 201 through bolts, a through hole matched with a rotating shaft 4 is formed in the center of the sealing cover 9, the sealing cover 9 can prevent water in the outer filtering cone 3 from entering the inner filtering cone 2 through a water permeable hole in the inner filtering cone 2, so as to ensure normal filtering work of the inner filtering cone 2, an outer filtering cone 3 covering the outer part of the inner filtering cone 2 is fixed on one surface of the mounting disc 1 on which the inner filtering cone 2 is fixed, the inner filtering cone 2 and the outer filtering cone 3 are coaxially arranged, water permeable holes are formed in the outer conical surfaces of the inner filtering cone 2 and the outer filtering cone 3, the diameter of the water permeable hole in the outer conical surface of the outer filtering cone 3 is larger than that of the water permeable hole in the outer conical surface of the inner filtering cone 2, a rotating shaft 4 penetrates through the axes of the inner filtering cone 2 and the outer filtering cone 3, a supporting structure 5 and a water flow fan blade 6 are fixed on one section of outer cylindrical surface of the rotating shaft 4 inside the inner filtering cone 2, a cleaning structure 7 matched with the outer conical surface of the inner filtering cone 2 is fixed on the outer cylindrical surface of the rotating shaft 4 and inside the outer filtering cone 3, and a floating object blocking structure 8 is fixed on one end of the rotating shaft 4 outside the outer filtering cone 3;
the cleaning structure 7 comprises a fixing sleeve 701 sleeved on the outer circular surface of the rotating shaft 4, a plurality of supporting rods 702 are annularly and equidistantly fixed on the outer circular surface of the fixing sleeve 701, extending rods 703 parallel to the outer conical surface of the inner filtering conical cylinder 2 are fixed at one ends of the supporting rods 702 far away from the fixing sleeve 701, a scraping plate 704 and a cleaning soft brush 705 are respectively fixed on two adjacent extending rods 703, the bottoms of the scraping plate 704 and the cleaning soft brush 705 are respectively contacted with the outer conical surface of the inner filtering conical cylinder 2, and the scraping plate 704 and the cleaning soft brush 705 clean the outer conical surface of the inner filtering conical cylinder 2 to remove silt and prevent the water permeable hole from being blocked;
one end of the inner filtering cone 2 is provided with a limit groove 201 matched with the supporting structure 5;
be fixed with expansion plate 301 on the outer conical surface of outer filter cone section of thick bamboo 3, expansion plate 301 can be when having the floater gathering to filter cone section of thick bamboo 3 surface outside for there is certain distance between floater and the outer 3 surface of filter cone section of thick bamboo, thereby avoids permeating water the hole and being blockked up by the floater.
The supporting structure 5 comprises a shaft sleeve 501 fixedly connected with the rotating shaft 4, supporting rods 502 are fixed on the outer circular surface of the shaft sleeve 501 at equal intervals, and one end, far away from the shaft sleeve 501, of each supporting rod 502 is rotatably connected with a roller 503 matched with the limiting groove 201.
The floater blocking structure 8 comprises a fixed disc 801, a connecting sleeve 802 fixedly connected with the rotating shaft 4 is fixed at the center of a circle on one surface of the fixed disc 801, a connecting column 803 is fixed at the center of a circle on the other surface of the fixed disc 801, blocking rods 804 are rotatably connected with the outer circular surface of the fixed disc 801 in an annular equidistant manner, rebounding rods 805 are rotatably connected with the outer circular surface of the connecting column 803 in an annular equidistant manner, one end, away from the connecting column 803, of each rebounding rod 805 is rotatably connected with the blocking rod 804, each rebounding rod 805 comprises an outer sleeve 8051, a first connecting seat 8052 rotatably connected with the connecting column 803 is fixed at one end of the outer sleeve 8051, a pipe cover 8053 is fixed at the other end of the outer sleeve 8051, a buffering rod 8054 extending into the outer sleeve 8051 penetrates through the pipe cover 8053, a limiting disc 8055 matched with the inner cavity of the outer sleeve 8051 is fixed at one end of the buffering rod 8054 located in the outer sleeve 8051, a spring 8056 is sleeved on a section of the outer circular surface of the buffering rod 8054 located in the outer sleeve 8051, a second connecting seat 8057 rotatably connected with the blocking rod 80804, a connecting ring 806 fixed on which the outer circular connecting ring is fixed with the first connecting ring 806 fixed on which the outer circular connecting ring 8042, and a connecting ring 806 fixed on which the outer circular connecting ring 80804 fixed with the connecting column 804 fixed on the outer circular surface of the fixed with the fixed connecting column 801.
One specific application of this embodiment is: when the water flow filtering device is used, the mounting disc 1 provided with the inner filtering cone barrel 2, the outer filtering cone barrel 3, the rotating shaft 4, the water flow fan blades 6, the cleaning structure 7 and the floater blocking structure 8 is fixed at a water inlet of the hydraulic power generation through bolts, when water flows pass through the inner filtering cone barrel 2 and the outer filtering cone barrel 3, the rotating shaft 4 is driven to rotate by the water flow carried by the water flow fan blades 6, and the cleaning structure 7 and the floater blocking structure 8 are driven to rotate by the rotation of the rotating shaft 4; cleaning structure 7 rotates and then cleans 2 surfaces of internal filtration awl section of thick bamboo, effectively avoids the interior hole of permeating water that filters on 2 awl sections of thick bamboo to block up, and floater blocking structure 8 is intercepted the floater along with rivers come simultaneously, effectively avoids the floater to filter a large amount of aggregations of 3 surfaces of awl section of thick bamboo outside.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (4)
1. A hydroelectric generation water inlet anti-blocking assembly based on hydroelectric generation setting comprises an installation disc (1), wherein an inner filtering cone (2) is fixed on one surface of the installation disc (1) through bolts, an outer filtering cone (3) covering the outer part of the inner filtering cone (2) is fixed on one surface of the installation disc (1) fixed with the inner filtering cone (2), the inner filtering cone (2) and the outer filtering cone (3) are coaxially arranged, water permeable holes are formed in the outer conical surfaces of the inner filtering cone (2) and the outer filtering cone (3), a rotating shaft (4) penetrates through the axle centers of the inner filtering cone (2) and the outer filtering cone (3), a supporting structure (5) and a water flow fan blade (6) are fixed on one section of outer cylindrical surface of the rotating shaft (4) located inside the inner filtering cone (2), and a cleaning structure (7) matched with the outer conical surface of the inner filtering cone (2) is fixed on the outer cylindrical surface of the rotating shaft (4) and located inside the outer filtering cone (3);
the cleaning structure (7) comprises a fixing sleeve (701) sleeved on the outer circular surface of the rotating shaft (4), a plurality of supporting rods (702) are fixed on the outer circular surface of the fixing sleeve (701) in an annular equidistant mode, extending rods (703) parallel to the outer conical surface of the inner filtering conical cylinder (2) are fixed at one ends, far away from the fixing sleeve (701), of the supporting rods (702), a scraper (704) and a cleaning soft brush (705) are fixed on two adjacent extending rods (703), the bottoms of the scraper (704) and the cleaning soft brush (705) are in contact with the outer conical surface of the inner filtering conical cylinder (2), and a limiting groove (201) matched with the supporting structure (5) is formed in one end of the inner filtering conical cylinder (2); outer filter cone (3) outer conical surface on be fixed with expansion board (301), its characterized in that:
a floating object blocking structure (8) is fixed at one end of the rotating shaft (4) positioned outside the outer filtering cone (3);
the floating object blocking structure (8) comprises a fixed disc (801), a connecting sleeve (802) fixedly connected with the rotating shaft (4) is fixed at the circle center of one surface of the fixed disc (801), a connecting column (803) is fixed at the circle center of the other surface of the fixed disc (801), blocking rods (804) are rotatably connected to the outer circular surface of the fixed disc (801) in an annular equidistant mode, rebounding rods (805) are rotatably connected to the outer circular surface of the connecting column (803) in an annular equidistant mode, and one end, far away from the connecting column (803), of each rebounding rod (805) is rotatably connected with the corresponding blocking rod (804);
the rebound rod (805) comprises an outer sleeve (8051), a first connecting seat (8052) rotatably connected with the connecting column (803) is fixed at one end of the outer sleeve (8051), a pipe cover (8053) is fixed at the other end of the outer sleeve (8051), a buffer rod (8054) extending into the outer sleeve (8051) penetrates through the pipe cover (8053), a limiting disc (8055) matched with the inner cavity of the outer sleeve (8051) is fixed at one end, located inside the outer sleeve (8051), of the buffer rod (8054), a spring (8056) is sleeved on one section of an outer circular surface, located inside the outer sleeve (8051), of the buffer rod (8054), and a second connecting seat (8057) rotatably connected with the blocking rod (804) is fixed at the other end of the buffer rod (8054);
a connecting pin (8041) rotatably connected with the fixed disc (801) is fixed at one end of the blocking rod (804), a rotary seat (806) matched with the connecting pin (8041) is fixed on the outer circular surface of the fixed disc (801) in an annular and equidistant mode, and a connecting ring (8042) matched with the second connecting seat (8057) is fixed on one surface of the blocking rod (804);
the outer circular surface of the connecting column (803) is annularly and equidistantly fixed with fixing rings (807) matched with the first connecting seat (8052).
2. A hydroelectric power generation water inlet anti-blocking assembly based on hydroelectric power generation setting as claimed in claim 1, wherein an end face of inner filtering cone (2) fixedly connected with mounting disc (1) is fixed with first flange (202), an end face of outer filtering cone (3) fixedly connected with mounting disc (1) is fixed with second flange (302), and mounting holes matched with bolts are respectively formed in first flange (202) and second flange (302).
3. A hydroelectric power generation water inlet anti-blocking assembly based on hydroelectric power generation setting as claimed in claim 1, wherein a sealing cover (9) is fixed through screws to one end face of the inner filtering conical cylinder (2) where the limiting groove (201) is formed, and a through hole matched with the rotating shaft (4) is formed in the center of the sealing cover (9).
4. The hydroelectric generation water inlet anti-blocking assembly based on hydroelectric generation setting of claim 1, characterized in that bearing structure (5) include with pivot (4) fixed connection's axle sleeve (501), equidistant bracing piece (502) that is fixed with on axle sleeve (501) the excircle face, the one end rotation that axle sleeve (501) was kept away from to bracing piece (502) is connected with spacing groove (201) complex gyro wheel (503).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111108698.5A CN113802525B (en) | 2021-09-22 | 2021-09-22 | Hydroelectric power generation water inlet prevents stifled subassembly based on hydroelectric power generation sets up |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111108698.5A CN113802525B (en) | 2021-09-22 | 2021-09-22 | Hydroelectric power generation water inlet prevents stifled subassembly based on hydroelectric power generation sets up |
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| CN113802525A CN113802525A (en) | 2021-12-17 |
| CN113802525B true CN113802525B (en) | 2022-11-29 |
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| US20100155336A1 (en) * | 2007-02-22 | 2010-06-24 | Simonson Roger M | Pipeline filter |
| US10858816B2 (en) * | 2017-12-12 | 2020-12-08 | Bryant Montague | Conical filtering device |
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| US7615148B1 (en) * | 2007-04-18 | 2009-11-10 | Gentry David W | Seawall filter |
| KR101356690B1 (en) * | 2013-02-07 | 2014-01-28 | 조영철 | Water flow system and water flow management method for river |
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| CN113802525A (en) | 2021-12-17 |
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