Fish passing facility of multifunctional ecological weir structure

Abstract

The utility model provides a fish passing facility of a multifunctional ecological weir structure, and belongs to the technical field of fish passing facilities. Comprising a cofferdam body, the top of the cofferdam body is provided with a plurality of stepped halfpace, the side walls of the halfpace are wavy, the tops of the halfpace are provided with rest cavities, the wavy side walls of the halfpace are provided with fish passing openings communicated with the rest cavities, and the top of the uppermost halfpace is provided with a trash rack arranged on one side of the rest cavity. A cleaning assembly used for scraping floating solid dirt is arranged on the trash rack. According to the device, physical strength consumed by the upstream of fishes is fully reduced, the fishes can keep rest, solid dirt floating on the water surface can be intercepted through the trash rack, and the solid dirt retained on one side of the trash intercepting net plate can be scraped to one side through the cleaning assembly; the work of manually and regularly cleaning the trash holding net plate and solid trash on one side of the trash holding net plate is effectively omitted, workers can conveniently clean the trash holding net plate, the situation that trash flows downwards to affect migration of fishes is avoided, and the functions are richer.

Description

Technical Field

[0001] This utility model provides a multifunctional ecological weir structure for fish passage, belonging to the technical field of fish passage facilities. Background Technology

[0002] Fish passage facilities are structures and mechanical installations used by fish to reach spawning or rearing sites through dams and gates. They are classified into two categories based on fish migration characteristics: anadromous fish passage facilities and descent fish passage facilities. These include fishways, fish locks, fish lifts, and fish collection boats. Many fish species exhibit current-directed migration. Dams and gates block natural migration routes for fish; therefore, constructing fish passage facilities to facilitate fish crossing over water flow differences is one measure for protecting and developing river fish resources.

[0003] The most common type of fish passage facility currently is the stepped weir structure. This continuous stepped design allows fish to jump upwards and back up, eventually crossing the weir. While this type of fish passage facility can generally meet normal usage needs, the sidewalls of the weir are usually vertical, inevitably requiring fish to expend more effort to swim upstream. Furthermore, the weir structure is relatively simple, only serving the function of fish passage, and usually cannot effectively intercept and clean up floating debris. The downstream flow of debris can easily hinder fish migration, making its functionality insufficient. Therefore, this invention provides a multifunctional ecological weir structure for fish passage. Utility Model Content

[0004] The technical problem solved by this utility model is that keeping the side wall of the weir ladder vertical will cause fish to expend more effort when swimming upstream, making it difficult to intercept and clean up the floating debris. The downstream flow of debris can easily affect the migration of fish, and the function is not comprehensive enough.

[0005] To solve the technical problem, the technical solution provided by this utility model is as follows: a multifunctional ecological weir structure for fish passage, including a weir body, the top of which is provided with multiple stepped platforms, the side walls of which are wavy, the top of which is provided with a resting cavity, the wavy side walls of which are provided with fish passage openings connected to the resting cavity, the top of the uppermost platform is provided with a debris barrier placed on one side of the resting cavity, the debris barrier is provided with a cleaning component for scraping away floating solid waste, and the side wall of the uppermost platform is provided with a through fish passage opening connected to the resting cavity.

[0006] Furthermore, the trash rack includes support columns symmetrically arranged on both sides of the top of the uppermost ladder platform, and a trash rack mesh is provided between the support columns.

[0007] Furthermore, the cleaning component includes a fixed plate fixedly mounted on the top of the support column, a motor is provided on the outer wall of one side of the fixed plate, the output end of the motor passes through the fixed plate and is fixedly connected to a screw, a support block is threadedly connected to the screw, and a scraper is provided on one side of the bottom of the support block to fit against one side wall of the debris screen plate.

[0008] Furthermore, the other end of the screw is rotatably connected to the side wall of the fixing plate on the other side, and the fixing plates are symmetrically provided with limiting rods placed outside the screw and passing through the support block.

[0009] Furthermore, the fish passage is located at the trough of the wave near the resting chamber on the upper part of the wavy side wall of the ladder.

[0010] Furthermore, the top edge of the tiered platform has a wavy sidewall with rounded corners, and the angle of the rounded corners is 35°-60°.

[0011] Furthermore, the size of the fish-passing opening is smaller than the size of the through-fish opening, and the distance between the top of the through-fish opening and the top of the uppermost platform is 13-26mm.

[0012] The beneficial effects of this utility model are:

[0013] When migrating upstream, the fish will swim upwards at an angle along the wavy sidewall of the platform. The resting chamber allows the fish to rest, which greatly reduces the energy they need to expend upstream and allows them to stay rested. The debris screen can intercept solid debris floating on the water surface, and the cleaning component can scrape the solid debris stuck on one side of the debris screen to the side, effectively saving the work of manually cleaning the debris screen and the solid debris on one side regularly. This makes it convenient for staff to clean and prevent the downstream flow of debris from affecting the fish's migration. It can realize the functions of fish passing through, debris interception, and debris scraping to one side for staff to clean on the weir body 1, making it more versatile. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0015] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0016] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 .

[0017] Figure 4 This is a plan view of the present invention.

[0018] 1. Weir body; 2. Platform; 3. Resting chamber; 4. Fish passage; 5. Trash rack; 6. Cleaning components; 7. Fish passage; 8. Support column; 9. Trash rack; 10. Fixing plate; 11. Motor; 12. Screw; 13. Support block; 14. Scraper; 15. Limiting rod; 16. Rounded corner. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] According to the appendix Figure 1 , 2 As shown: This utility model provides a multifunctional ecological weir structure for fish passage: it includes a weir body 1, with multiple stepped platforms 2 at the top of the weir body 1. The side walls of the platforms 2 are wavy, and a resting cavity 3 is provided at the top of the platforms 2. Fish passage openings 4 are provided on the wavy side walls of the platforms 2, which are connected to the resting cavity 3. The fish passage openings 4 are located at the trough of the wavy side walls of the platforms 2 near the resting cavity 3. The top edge of the wavy side walls of the platforms 2 has a rounded corner 16 with an angle of 35°-60°, which serves to blunt the angle and prevent greater damage to the fish when they swim upstream. The side wall of the uppermost platform 2 has a through fish opening 7 that is connected to the resting cavity 3. The size of the fish passage opening 4 is smaller than the size of the through fish opening 7. The distance between the top of the through fish opening 7 and the top of the uppermost platform 2 is 13-26mm. After swimming to the resting cavity 3 at the top, the fish can swim out through the through fish opening 7, so that the weir body 1 does not obstruct the fish's migration.

[0021] According to the appendix Figure 3 As shown: The top of the uppermost platform 2 is equipped with a debris barrier 5 located on one side of the rest chamber 3. The debris barrier 5 includes support columns 8 symmetrically arranged on both sides of the top of the uppermost platform 2. A debris barrier plate 9 is provided between the support columns 8. The debris barrier plate 9 can intercept solid debris floating on the water surface.

[0022] According to the appendix Figure 4As shown: The trash rack 5 is equipped with a cleaning component 6 for scraping away floating solid waste. The cleaning component 6 includes a fixed plate 10 fixedly installed on the top of the support column 8. A motor 11 is installed on the outer wall of one side of the fixed plate 10. The output end of the motor 11 passes through the fixed plate 10 and is fixedly connected to a screw 12. A support block 13 is threadedly connected to the screw 12. A scraper 14 is provided on one side of the bottom of the support block 13, which is in contact with one side wall of the trash rack 9. The other end of the screw 12 is rotatably connected to the side wall of the other side of the fixed plate 10. A limiting rod 15 is symmetrically provided between the fixed plates 10, which is placed outside the screw 12 and passes through the support block 13, and serves to limit the support block 13. By starting the motor 11, the screw 12 is driven to rotate, which in turn drives the support block 13 to move, which in turn drives the scraper 14 to move. This allows the solid waste retained on one side of the trash rack 9 to be scraped to one side, effectively saving the work of manually cleaning the trash rack 9 and the solid waste on one side on a regular basis, making it convenient for staff to clean.

[0023] The principle of this utility model

[0024] In operation, fish swim upstream from one side of the weir 1, passing through each of the terraces 2 in sequence. As they swim upwards, they tilt and move along the wavy sidewalls of the terraces 2, passing through the fish inlet 4 and reaching the resting chamber 3 from the rounded top corner 16. The resting chamber 3 can be furnished with rocks, aquatic plants, and other vegetation to create a small ecological environment for the upstream fish to rest. After passing through multiple terraces 2 and reaching the top resting chamber 3, they can swim away through the fish inlet 7. This process significantly reduces the energy expended by the fish swimming upstream and allows them to rest, preventing [further damage / loss]. The weir 1 obstructs fish migration, while the debris-blocking net 9 intercepts solid debris floating on the water surface. Through the cleaning component 6, the motor 11 is started to drive the scraper 14 to move, which can scrape the solid debris stuck on one side of the debris-blocking net 9 to the other side. This effectively saves the work of manually cleaning the debris-blocking net 9 and the solid debris on one side regularly, making it convenient for staff to clean and preventing the downstream flow of debris from affecting fish migration. The weir 1 can realize the functions of fish passage, debris interception, and debris scraping to one side for staff to clean, making it more versatile.

[0025] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A multifunctional ecological weir structure for fish passage, comprising a weir body (1), characterized in that: The top of the weir (1) is provided with a number of stepped platforms (2), the side walls of the platforms (2) are wavy, the top of the platforms (2) is provided with a rest chamber (3), the wavy side walls of the platforms (2) are provided with a fish passage (4) connected to the rest chamber (3), the top of the uppermost platform (2) is provided with a debris barrier (5) placed on one side of the rest chamber (3), the debris barrier (5) is provided with a cleaning component (6) for scraping away floating solid waste, and the side wall of the uppermost platform (2) is provided with a through fish passage (7) connected to the rest chamber (3).

2. The fish passage facility of a multifunctional ecological weir structure according to claim 1, characterized in that: The trash rack (5) includes support columns (8) symmetrically arranged on both sides of the top of the uppermost ladder (2), and trash rack plates (9) are provided between the support columns (8).

3. The fish passage facility of a multifunctional ecological weir structure according to claim 2, characterized in that: The cleaning component (6) includes a fixing plate (10) fixedly installed on the top of the support column (8). A motor (11) is provided on the outer wall of one side of the fixing plate (10). The output end of the motor (11) passes through the fixing plate (10) and is fixedly connected to a screw (12). A support block (13) is threadedly connected to the screw (12). A scraper (14) is provided on one side of the bottom of the support block (13) and fits against one side wall of the dirt screen plate (9).

4. The fish passage facility of a multifunctional ecological weir structure according to claim 3, characterized in that: The other end of the screw (12) is rotatably connected to the side wall of the fixing plate (10) on the other side. The fixing plates (10) are symmetrically provided with limiting rods (15) placed outside the screw (12) and passing through the support block (13).

5. The fish passage facility of a multifunctional ecological weir structure according to claim 1, characterized in that: The fish passage (4) is located at the trough of the wave on the upper part of the wavy side wall of the platform (2), near the rest chamber (3).

6. The fish passage facility of a multifunctional ecological weir structure according to claim 1, characterized in that: The ladder (2) has a wavy side wall top edge rounded corner (16), and the angle of the rounded corner (16) is 35°-60°.

7. The fish passage facility of a multifunctional ecological weir structure according to claim 1, characterized in that: The size of the fish mouth (4) is smaller than the size of the through fish mouth (7), and the distance between the top of the through fish mouth (7) and the top of the uppermost ladder (2) is 13-26mm.

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