Fishway inlet flow fish luring device and method based on flow self-adaptive adjustment

Abstract

The present application relates to fish attracting device technical field, disclose a kind of fishway entrance water flow fish attracting device and fish attracting method based on flow self-adapting regulation, including loading mechanism, the top outside of the loading mechanism is fixedly connected with floating mechanism, the inside of the loading mechanism is provided with water flow linkage fish attracting mechanism, the middle part upper end of the floating mechanism is fixedly connected with ration bait releasing mechanism.In the present application, through the cooperation of loading mechanism, water flow linkage fish attracting mechanism and floating mechanism, the problem that traditional fishway fish attracting is mostly dependent on natural water flow guidance, lacks active fish attracting mechanism, and part of fish attracting device uses fixed water flow disturbance structure, cannot be self-adaptively regulated according to actual flow change is relieved, through the cooperation of ration bait releasing mechanism and protective shell, the problem that bait release of traditional fish attracting device is mostly artificial control or continuous release, and the device is mostly fixed installation, and the flexibility is insufficient, it is difficult to adjust position according to the actual working condition of fishway entrance.

Description

Technical Field

[0001] This invention relates to the field of fish-attracting devices, and in particular to a fish-attracting device and method based on adaptive flow regulation of fishway inlet water flow. Background Technology

[0002] In water conservancy projects, fish passages are key facilities for ensuring fish migration and maintaining ecological balance, and the fish-attracting effect of the fish passage entrance directly affects the fish entry rate.

[0003] Traditional fishway systems rely heavily on natural water flow guidance, lacking an active fish-attracting mechanism. When the water flow is unstable or too slow, it is difficult to create a distinctive water flow signal that attracts fish, making it difficult for fish to find the fishway entrance and resulting in low entry efficiency. At the same time, some fish-attracting devices use fixed water flow disturbance structures, which cannot adaptively adjust to changes in actual flow. Under different hydrological conditions such as flood season and dry season, the fish-attracting effect fluctuates greatly, making it difficult to adapt to complex aquatic environments. In addition, the baiting of traditional fish-attracting devices is mostly manually controlled or continuously released, lacking a precise quantitative and timed feeding mechanism. Excessive feeding can easily cause water pollution, while insufficient feeding will not effectively attract fish. Although some devices have a feeding function, their coordination with water flow guidance is poor, failing to create a dual fish-attracting effect of water flow signal combined with bait attraction. Moreover, most devices are fixed installations, lacking flexibility and making it difficult to adjust their position according to the actual working conditions of the fishway entrance. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a fish-attracting device and method based on adaptive flow regulation of fishway inlet water flow. This is a highly efficient fish-attracting device that can adaptively regulate flow and coordinate precise baiting to meet the requirements of modern ecological water conservancy projects for fish-attracting efficiency, environmental adaptability, and eco-friendliness.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A fish-attracting device based on adaptive flow regulation of fishway inlet water flow includes a loading mechanism, a floating mechanism fixedly connected to the top outer side of the loading mechanism, a water flow-linked fish-attracting mechanism arranged inside the loading mechanism, and a quantitative feeding mechanism fixedly connected to the upper middle part of the floating mechanism.

[0007] The loading mechanism includes a housing, a fixing ring fixedly connected to the inner wall of the middle part of the housing, and a plurality of fixing frames evenly fixedly connected to the inner wall of the top of the housing. Each of the fixing frames has a sloping frame opening fixedly connected to one end away from the housing. A door panel is hinged to one side of the lower part of the housing. A plurality of rotating grooves are evenly opened on the upper side of the fixing ring. A rotating hole is opened in the middle of the upper side of the end of each of the fixing frames near the inner wall of the housing.

[0008] The water flow linkage fish-catching mechanism includes multiple rotating rods that are rotatably connected inside multiple rotating holes and multiple arc-shaped filter plates that are uniformly fixed to the outer walls of the multiple rotating rods.

[0009] Furthermore, pulleys 1, 2, 3, 4, 5, and 6 are fixedly connected to the upper ends of the multiple rotating rods, respectively. Pulley 7 is fixedly connected to the upper side of pulley 1, pulley 8 is fixedly connected to the upper side of pulley 2, pulley 9 is fixedly connected to the upper side of pulley 3, pulley 10 is fixedly connected to the upper side of pulley 4, pulley 11 is fixedly connected to the upper side of pulley 5, and pulley 12 is fixedly connected to the upper side of pulley 6. Pulleys 1 and 2... The outer walls of the middle sections of the pulleys are connected by a synchronous belt. The outer walls of the middle sections of pulley eight and pulley nine are connected by a synchronous belt. The outer walls of the middle sections of pulley three and pulley four are connected by a synchronous belt. The outer walls of the middle sections of pulley ten and pulley eleven are connected by a synchronous belt. The outer walls of the middle sections of pulley five and pulley six are connected by a synchronous belt. The outer walls of the middle sections of pulley twelve and pulley seven are connected by a synchronous belt. Each pulley is connected by a synchronous belt drive to form multiple sets of linkage structures.

[0010] Furthermore, the floating mechanism includes a hollow ring plate fixedly connected to the upper side of the outer shell, a baffle ring fixedly connected to the outer wall of the top of the outer shell, and a floating airbag fixedly connected to the outer side of the hollow ring plate. The lower side of the hollow ring plate is evenly provided with multiple through holes. The floating airbags are evenly distributed in a ring. The top ends of multiple rotating rods are respectively rotatably connected to the middle of multiple through holes. The upper part of the water flow linkage fish-catching mechanism is set inside the hollow ring plate.

[0011] Furthermore, the quantitative feeding mechanism includes a bait bin fixedly connected to the upper side of the hollow ring plate, a fixed circular plate fixedly connected to the upper inner wall of the hollow ring plate, and a rotating circular plate rotatably connected to the upper side of the fixed circular plate. The upper side of the bait bin is hinged to a cover plate. A plurality of feed filter holes are evenly opened inside one side of the fixed circular plate. A through groove is opened through one side of the rotating circular plate, and the through groove corresponds to the position of the feed filter holes.

[0012] Furthermore, a motor is fixedly connected to the upper middle part of the bait bin, a shaft is fixedly connected to the output end of the motor, a rotating plate is fixedly connected to the end of the shaft away from the motor, cleaning brushes are fixedly connected to the upper sides of both ends of the rotating plate, the upper side of the cleaning brushes is in close contact with the lower side of the fixed circular plate, the outer wall of the end of the shaft near the rotating plate is fixedly connected to the rotating circular plate, and the end of the shaft away from the motor is rotatably connected to the middle part of the fixed circular plate;

[0013] Furthermore, the multiple arc-shaped filter plates are tilted in the same direction and are adapted to the direction of water flow, which can drive the rotating rod to rotate under the impact of water flow;

[0014] Furthermore, the ramp frame opening has a trumpet-shaped structure, with its large-diameter end facing the external water area and its small-diameter end communicating with the inside of the outer shell. A sealing gasket is provided at the hinge of the door panel and the outer shell, and the ends of the multiple rotating rods away from the rotating holes are respectively set in the middle of multiple rotating grooves.

[0015] Furthermore, a protective shell is fixedly connected to the upper side of the bait bin, and the motor is located inside the protective shell, which is made of waterproof material;

[0016] Furthermore, by coordinating water flow and quantitative baiting, adaptive flow regulation can be achieved to attract fish.

[0017] After the device is placed at the fishway inlet, the floating airbag of the floating mechanism provides buoyancy, allowing the device to float stably on the water surface. The water flow impacts the arc-shaped filter plate, causing the rotating rod to rotate. Through the transmission of multiple sets of pulleys and synchronous belts, the entire water flow linkage fish-catching mechanism can operate synchronously.

[0018] The motor of the quantitative feeding mechanism is started. The motor drives the rotating disc to rotate through the shaft. When the through groove of the rotating disc coincides with the feed filter hole of the fixed disc, the feed in the feed bin falls automatically to achieve quantitative feeding. At the same time, the cleaning brush rotates synchronously to clean the feed residue on the surface of the rotating disc.

[0019] When the water flow rate changes, the rotation speed of the arc-shaped filter plate is adaptively adjusted according to the water flow intensity, thereby changing the frequency of water flow disturbance. Combined with the frequency adjustment of quantitative feeding, it adapts to the fish attraction needs under different flow conditions and guides fish into the fish passage through the sloping frame opening. The structure of the sloping frame opening can prevent fish from swimming out after entering the shell.

[0020] The present invention has the following beneficial effects:

[0021] 1. In this invention, the loading mechanism, the water flow linkage fish-attracting mechanism, and the floating mechanism work together to alleviate the problem that traditional fishway fish-attracting relies heavily on natural water flow guidance and lacks an active fish-attracting mechanism. When the water flow is unstable or the flow velocity is too slow, it is difficult to form a distinctive water flow signal that attracts fish, making it difficult for fish to find the fishway entrance and resulting in low entry efficiency. At the same time, some fish-attracting devices adopt a fixed water flow disturbance structure, which cannot adaptively adjust according to actual flow changes. Under different hydrological conditions such as flood season and dry season, the fish-attracting effect fluctuates greatly and is difficult to adapt to complex aquatic environments.

[0022] 2. In this invention, the quantitative feeding mechanism and the protective shell work together to alleviate the problems of traditional fish-attracting devices, which are mostly manually controlled or continuously released for feeding, lacking a precise quantitative and timed feeding mechanism. Excessive feeding can easily cause water pollution, while insufficient feeding cannot effectively attract fish. Although some devices have feeding functions, their coordination with water flow guidance is poor, and they cannot form a dual fish-attracting effect of water flow signal combined with bait attraction. In addition, most devices are fixed installations, which lack flexibility and make it difficult to adjust their position according to the actual working conditions of the fish passage inlet. Attached Figure Description

[0023] Figure 1 This is a perspective view of a fish-attracting device and method based on adaptive flow regulation of fishway inlet water flow proposed in this invention.

[0024] Figure 2 This is a schematic diagram of the loading mechanism of a fish-attracting device and method based on adaptive flow regulation of fishway inlet water flow proposed in this invention.

[0025] Figure 3 This is a schematic diagram of the floating airbag structure of a fish-attracting device and method based on adaptive flow regulation of fishway inlet water flow proposed in this invention.

[0026] Figure 4 This is a schematic diagram of the hollow ring plate of a fish-attracting device and method based on adaptive flow regulation of fishway inlet water flow proposed in this invention.

[0027] Figure 5 This is a schematic diagram of the fixed circular plate of a fish-attracting device and method based on adaptive flow regulation of fishway inlet water flow proposed in this invention.

[0028] Figure 6 This is a schematic diagram of the rotating plate of a fish-attracting device and method based on adaptive flow regulation of fishway inlet water flow proposed in this invention.

[0029] Figure 7 This is a schematic diagram of the rotating circular plate of a fish-attracting device and method based on adaptive flow regulation of fishway inlet water flow proposed in this invention.

[0030] Figure 8 This is a schematic diagram of the water flow linkage fish-attracting mechanism of a fishway inlet water flow fish-attracting device and fish-attracting method based on flow adaptive adjustment proposed in this invention.

[0031] Figure 9 This is a schematic diagram of the fixed frame of a fish-attracting device and method based on adaptive flow regulation of fishway inlet water flow proposed in this invention.

[0032] Figure 10This is a schematic diagram of the arc-shaped filter plate of a fish-attracting device and method based on adaptive flow regulation of fish passage inlet water, as proposed in this invention.

[0033] Legend:

[0034] 1. Loading mechanism; 11. Outer shell; 12. Fixed ring; 13. Fixed frame; 14. Sloping frame opening; 15. Door panel; 16. Rotary groove; 17. Rotary hole; 2. Water flow linkage fish-catching mechanism; 21. Rotating rod; 22. Arc-shaped filter plate; 23. Pulley 1; 24. Pulley 2; 25. Pulley 3; 26. Pulley 4; 27. Pulley 5; 28. Pulley 6; 29. ​​Pulley 7; 210. Pulley 8; 211. Pulley 9; 212. Pulley 10; 213. Pulley 11; 214. Pulley 12; 2 15. Synchronous belt one; 216. Synchronous belt two; 217. Synchronous belt three; 218. Synchronous belt four; 219. Synchronous belt five; 220. Synchronous belt six; 3. Floating mechanism; 31. Hollow ring plate; 32. Barrier ring; 33. Floating airbag; 34. Through hole; 4. Quantitative feeding mechanism; 41. Bait bin; 42. Fixed circular plate; 43. Rotating circular plate; 44. Motor; 45. Shaft; 46. Rotating plate; 47. Cleaning brush; 48. Bait filter hole; 49. Through groove; 410. Cover plate; 5. Protective shell. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Reference Figure 1-10 An embodiment of the present invention provides a fish-attracting device based on adaptive flow regulation of fishway inlet water flow, including a loading mechanism 1, a floating mechanism 3 fixedly connected to the top outer side of the loading mechanism 1, a water flow linkage fish-attracting mechanism 2 provided inside the loading mechanism 1, and a quantitative feeding mechanism 4 fixedly connected to the upper middle part of the floating mechanism 3.

[0037] The loading mechanism 1 includes a housing 11, a fixing ring 12 fixedly connected to the inner wall of the middle part of the housing 11, and multiple fixing frames 13 evenly fixedly connected to the inner wall of the top part of the housing 11. Each fixing frame 13 has a sloping frame opening 14 fixedly connected to its end away from the housing 11. A door panel 15 is hinged to the lower side of the housing 11. Multiple rotating grooves 16 are evenly provided on the upper side of the fixing ring 12. Rotating holes 17 are provided in the middle of the upper side of each fixing frame 13 near the inner wall of the housing 11. This device also features flow adaptive disturbance... The combined effect of movement and fish attraction can achieve dynamic water flow disturbance to attract fish. When the water flow rate changes, the impact force on the arc-shaped filter plate 22 changes synchronously, causing the rotating rod 21 to adjust its rotation speed adaptively: when the flow rate increases, the rotation speed increases, the water flow disturbance frequency increases, and a strong attraction signal is formed; when the flow rate decreases, the rotation speed decreases, the disturbance frequency decreases, simulating the dynamics of natural water flow. Multiple sets of arc-shaped filter plates 22 operate synchronously, forming a continuous and regular water flow disturbance inside the outer shell 11, transmitting the fish passage inlet position signal to the fish.

[0038] The water flow linkage fish-catching mechanism 2 includes multiple rotating rods 21 that are rotatably connected inside multiple rotating holes 17 and multiple arc-shaped filter plates 22 that are uniformly fixed to the outer wall of the multiple rotating rods 21.

[0039] The upper ends of multiple rotating rods 21 are respectively fixedly connected to pulleys 1-23, 24-25, 26-27, 28-29, 29-210, 211-211, 212-212, 213-213, 22-21. Belt 12 214 is fixedly connected to the upper side of belt 6 28. Belt 1 23 and the outer wall of the middle portion of belt 2 24 are connected by synchronous belt 1 215. Belt 8 210 and the outer wall of the middle portion of belt 9 211 are connected by synchronous belt 2 216. Belt 3 25 and the outer wall of the middle portion of belt 4 26 are connected by synchronous belt 3 217. Belt 10 212 and the outer wall of the middle portion of belt 11 213 are connected by synchronous belt 4 218. Belt 5 27 and the outer wall of the middle portion of belt 6 28 are connected by synchronous belt 216. The walls are connected by synchronous belt 219, and the outer wall of pulley 214 and pulley 29 are connected by synchronous belt 220. Each pulley is connected by synchronous belt drive to form a multi-link structure. This device can realize water flow driven multi-link linkage. The water flow impacts the arc-shaped filter plate 22 inside the loading mechanism 1. Because the inclination direction of the arc-shaped filter plate 22 is adapted to the water flow direction, the water flow thrust drives the rotating rod 21 to rotate around the rotating hole 17 and the rotating groove 16. The pulley at the upper end of the rotating rod 21 Pulley 23 is connected to pulley 24 via synchronous belt 215; pulley 8 is connected to pulley 211 via synchronous belt 216; pulley 3 is connected to pulley 26 via synchronous belt 317; pulley 10 is connected to pulley 213 via synchronous belt 418; pulley 5 is connected to pulley 28 via synchronous belt 519; and finally, pulley 12 is connected to pulley 729 via synchronous belt 620 in a closed loop, thus achieving synchronous rotation of all rotating rods 21.

[0040] The floating mechanism 3 includes a hollow ring plate 31 fixedly connected to the upper side of the outer shell 11, a baffle ring 32 fixedly connected to the outer wall of the top of the outer shell 11, and a floating airbag 33 fixedly connected to the outer side of the hollow ring plate 31. Multiple through holes 34 are evenly opened on the lower side of the hollow ring plate 31. The floating airbags 33 are evenly distributed in a ring. The tops of multiple rotating rods 21 are rotatably connected to the middle of the multiple through holes 34. The upper part of the water flow linkage fish-catching mechanism 2 is set inside the hollow ring plate 31. When stably suspended and positioned, the ring-shaped floating airbags 33 of the floating mechanism 3 provide uniform buoyancy, so that the device is stably suspended on the water surface at the fish passage inlet. The hollow ring plate 31 and the baffle ring 32 ensure the integrity of the device structure and avoid displacement caused by water flow impact. The tops of the multiple rotating rods 21 are rotatably connected through the through holes 34 to provide stable support for subsequent linkage.

[0041] The quantitative feeding mechanism 4 includes a bait bin 41 fixedly connected to the upper side of the hollow ring plate 31, a fixed circular plate 42 fixedly connected to the upper inner wall of the hollow ring plate 31, and a rotating circular plate 43 rotatably connected to the upper side of the fixed circular plate 42. The upper side of the bait bin 41 is hinged to a cover plate 410. A plurality of feed filter holes 48 are evenly opened inside one side of the fixed circular plate 42. A through groove 49 is opened through one side of the rotating circular plate 43, and the through groove 49 corresponds to the position of the feed filter holes 48.

[0042] A motor 44 is fixedly connected to the upper center of the bait bin 41. A shaft 45 is fixedly connected to the output end of the motor 44. A rotating plate 46 is fixedly connected to the end of the shaft 45 away from the motor 44. Cleaning brushes 47 are fixedly connected to the upper sides of both ends of the rotating plate 46. The upper side of the cleaning brushes 47 is in close contact with the lower side of the fixed circular plate 42. The outer wall of the end of the shaft 45 near the rotating plate 46 is fixedly connected to the rotating circular plate 43. The end of the shaft 45 away from the motor 44 is rotatably connected to the center of the fixed circular plate 42. This equipment can achieve quantitative baiting and improve efficiency. The motor 44 of the dynamic quantitative feeding mechanism 4 has a waterproof protective shell 5 to ensure stable underwater operation. The motor 44 drives the rotating circular plate 43 to rotate through the shaft 45. When the through groove 49 of the rotating circular plate 43 coincides with the feeding filter hole 48 of the fixed circular plate 42, the bait in the bait bin 41 falls quantitatively to form a bait band. When the through groove 49 and the feeding filter hole 48 are misaligned, the feeding stops to avoid waste and pollution. At the same time, the shaft 45 drives the rotating plate 46 and the cleaning brush 47 to rotate to clean the residual bait on the lower side of the fixed circular plate 42 and prevent the feeding filter hole 48 from being blocked.

[0043] The multiple arc-shaped filter plates 22 are tilted in the same direction and are adapted to the direction of water flow, which can drive the rotating rod 21 to rotate under the impact of water flow.

[0044] The ramp frame opening 14 has a trumpet-shaped structure, with its large-diameter end facing the external water area and its small-diameter end communicating with the interior of the outer shell 11. A sealing gasket is provided at the hinge of the door panel 15 and the outer shell 11. The ends of the multiple rotating rods 21 that are away from the rotating holes 17 are respectively located in the middle of the multiple rotating grooves 16.

[0045] A protective shell 5 is fixedly connected to the upper side of the bait bin 41, and the motor 44 is located inside the protective shell 5. The protective shell 5 is made of waterproof material.

[0046] By coordinating water flow and quantitative feeding, the flow rate can be adaptively adjusted to attract fish and increase the fish entry rate.

[0047] After the device is placed at the fishway inlet, the floating airbag 33 of the floating mechanism 3 provides buoyancy, so that the device floats stably on the water surface. The water flow impacts the arc-shaped filter plate 22, which drives the rotating rod 21 to rotate. Through the transmission of multiple sets of pulleys and synchronous belts, the entire water flow linkage fish-attracting mechanism 2 operates synchronously, forming a continuous and regular water flow disturbance, simulating the natural water flow environment to attract fish.

[0048] The motor 44 of the quantitative feeding mechanism 4 is started. The motor 44 drives the rotating circular plate 43 to rotate through the shaft 45. When the through groove 49 of the rotating circular plate 43 coincides with the feed filter hole 48 of the fixed circular plate 42, the feed in the feed bin 41 falls automatically to realize quantitative feeding. At the same time, the cleaning brush 47 rotates synchronously to clean the feed residue on the surface of the rotating circular plate 43 and prevent blockage.

[0049] When the water flow rate changes, the rotation speed of the arc-shaped filter plate 22 is adaptively adjusted according to the water flow intensity, thereby changing the frequency of water flow disturbance. Combined with the frequency adjustment of quantitative feeding, it adapts to the fish attraction needs under different flow conditions and guides fish to enter the fish passage through the sloping frame opening 14. The structure of the sloping frame opening 14 can prevent fish from swimming out after entering the outer shell 11.

[0050] Working Principle: This device, through the coordinated operation of the loading mechanism 1, the water flow-linked fish-attracting mechanism 2, the floating mechanism 3, and the quantitative feeding mechanism 4, uses water flow adaptive drive combined with dual attraction and guidance as its core to achieve efficient fish entry into the fish passage. This device features both suspension and water flow dynamic transmission. During stable suspension and positioning, the annular floating airbag 33 of the floating mechanism 3 provides uniform buoyancy, ensuring the device remains stably suspended above the fish passage inlet surface. The hollow ring plate 31 and the baffle ring 32 ensure the integrity of the device structure, preventing displacement caused by water flow impact. The tops of multiple rotating rods 21 are rotatably connected through through holes 34, providing stable support for subsequent linkages. This device can achieve water flow-driven multi-rod linkage. The water flow impacts the arc-shaped filter plate 22 inside the loading mechanism 1, and due to the arc shape... The filter plate 22 is tilted to match the direction of water flow. The water flow thrust drives the rotating rod 21 to rotate around the rotating hole 17 and the rotating groove 16. The pulley 1 23 at the upper end of the rotating rod 21 is linked to pulley 24 via synchronous belt 1 215, pulley 8 210 via synchronous belt 2 216 via synchronous belt 2 211, pulley 3 25 via synchronous belt 3 217 via synchronous belt 3 216, pulley 4 26 via synchronous belt 3 217, pulley 10 212 via synchronous belt 4 218 via synchronous belt 4 213, pulley 5 27 via synchronous belt 5 219 via synchronous belt 5 219 via pulley 6 28, and finally pulley 12 214 via synchronous belt 6 220 and pulley 7 29 in a closed loop transmission, realizing the synchronous rotation of all rotating rods 21. This equipment also has the effect of flow adaptive disturbance and fish attraction synergy, which can realize dynamic water flow disturbance to attract fish. When the flow rate changes, the impact force on the arc-shaped filter plate 22 changes synchronously, causing the rotation speed of the rotating rod 21 to adjust adaptively: when the flow rate increases, the rotation speed increases, the water flow disturbance frequency increases, and a strong attraction signal is formed; when the flow rate decreases, the rotation speed decreases, the disturbance frequency decreases, simulating the dynamics of natural water flow. Multiple sets of arc-shaped filter plates 22 operate synchronously, forming a continuous and regular water flow disturbance inside the outer shell 11, transmitting the fish passage inlet position signal to the fish. This device can achieve quantitative feeding efficiency enhancement. The motor 44 of the quantitative feeding mechanism 4 is activated. The waterproof protective shell 5 ensures stable underwater operation. The motor 44 drives the rotating circular plate 43 to rotate through the shaft 45. When the through groove 49 of the rotating circular plate 43 coincides with the feeding filter hole 48 of the fixed circular plate 42, the bait bin 4... The bait inside the 1 is quantitatively released to form a bait band. When the channel 49 and the feed filter hole 48 are misaligned, the feeding stops to avoid waste and pollution. At the same time, the shaft 45 drives the rotating plate 46 and the cleaning brush 47 to rotate, cleaning the residual bait on the underside of the fixed circular plate 42 and preventing the feed filter hole 48 from being blocked. This equipment has the functions of guiding the fish into the channel and preventing escape. The water flow disturbance and the bait band form a double attraction to guide the fish to approach the device. The inclined frame 14 of the loading mechanism 1 is funnel-shaped. The large diameter end faces the external water area to lower the entry threshold, and the small diameter end is connected to the inside of the outer shell 11. After the fish enter, it is difficult for them to swim back out. Finally, the fish enter the fish channel through the outer shell 11. The door plate 15 can be opened and closed easily for easy maintenance of the device. The whole system realizes efficient fish attraction with adaptive flow regulation.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fish-attracting device based on adaptive flow regulation of fishway inlet water, comprising a loading mechanism (1), characterized in that: The loading mechanism (1) is fixedly connected to the top outer side of the floating mechanism (3), and the loading mechanism (1) is provided with a water flow linkage fish-catching mechanism (2). The floating mechanism (3) is fixedly connected to the upper middle part of the floating mechanism (3) with a quantitative feeding mechanism (4). The loading mechanism (1) includes a housing (11), a fixing ring (12) fixedly connected to the inner wall of the middle part of the housing (11), and a plurality of fixing frames (13) evenly fixedly connected to the inner wall of the top of the housing (11). Each of the plurality of fixing frames (13) has a sloping frame opening (14) fixedly connected to one end away from the housing (11). A door panel (15) is hinged to one side of the lower part of the housing (11). A plurality of rotating grooves (16) are evenly opened on the upper side of the fixing ring (12). A rotating hole (17) is opened in the middle of the upper side of one end of the plurality of fixing frames (13) near the inner wall of the housing (11). The water flow linkage fish-catching mechanism (2) includes multiple rotating rods (21) that are rotatably connected inside multiple rotating holes (17) and multiple arc-shaped filter plates (22) that are uniformly fixed to the outer walls of the multiple rotating rods (21).

2. The fish-attracting device for fishway inlet water flow based on adaptive flow regulation according to claim 1, characterized in that: The upper ends of the multiple rotating rods (21) are respectively fixedly connected to pulley one (23), pulley two (24), pulley three (25), pulley four (26), pulley five (27) and pulley six (28). The upper side of pulley one (23) is fixedly connected to pulley seven (29), the upper side of pulley two (24) is fixedly connected to pulley eight (210), the upper side of pulley three (25) is fixedly connected to pulley nine (211), the upper side of pulley four (26) is fixedly connected to pulley ten (212), the upper side of pulley five (27) is fixedly connected to pulley eleven (213), and the upper side of pulley six (28) is fixedly connected to pulley twelve (214). The upper ends of pulley one (23) and pulley two... The outer wall of the middle part of (24) is connected by synchronous belt one (215). The outer wall of the middle part of pulley eight (210) and pulley nine (211) is connected by synchronous belt two (216). The outer wall of the middle part of pulley three (25) and pulley four (26) is connected by synchronous belt three (217). The outer wall of the middle part of pulley ten (212) and pulley eleven (213) is connected by synchronous belt four (218). The outer wall of the middle part of pulley five (27) and pulley six (28) is connected by synchronous belt five (219). The outer wall of the middle part of pulley twelve (214) and pulley seven (29) is connected by synchronous belt six (220). Each pulley is connected by synchronous belt drive to form multiple sets of linkage structure.

3. The fish-attracting device for fishway inlet water flow based on adaptive flow regulation according to claim 1, characterized in that: The floating mechanism (3) includes a hollow ring plate (31) fixedly connected to the upper side of the outer shell (11), a baffle ring (32) fixedly connected to the outer wall of the top of the outer shell (11), and a floating airbag (33) fixedly connected to the outer side of the hollow ring plate (31). The lower side of the hollow ring plate (31) is evenly provided with multiple through holes (34). The floating airbag (33) is evenly distributed in a ring. The top ends of multiple rotating rods (21) are respectively rotatably connected to the middle of multiple through holes (34). The upper part of the water flow linkage fish-catching mechanism (2) is set inside the hollow ring plate (31).

4. A fish-attracting device for fishway inlet water flow based on adaptive flow regulation according to claim 3, characterized in that: The quantitative feeding mechanism (4) includes a bait bin (41) fixedly connected to the upper side of the hollow ring plate (31), a fixed circular plate (42) fixedly connected to the upper inner wall of the hollow ring plate (31), and a rotating circular plate (43) rotatably connected to the upper side of the fixed circular plate (42). The upper side of the bait bin (41) is hinged to a cover plate (410). A plurality of feed filter holes (48) are evenly opened inside one side of the fixed circular plate (42). A through groove (49) is opened through one side of the rotating circular plate (43). The through groove (49) corresponds to the position of the feed filter hole (48).

5. A fish-attracting device for fishway inlet water flow based on adaptive flow regulation according to claim 4, characterized in that: A motor (44) is fixedly connected to the upper middle part of the bait bin (41). A shaft (45) is fixedly connected to the output end of the motor (44). A rotating plate (46) is fixedly connected to the end of the shaft (45) away from the motor (44). A cleaning brush (47) is fixedly connected to the upper side of both ends of the rotating plate (46). The upper side of the cleaning brush (47) is close to the lower side of the fixed circular plate (42). The outer wall of the end of the shaft (45) near the rotating plate (46) is fixedly connected to the rotating circular plate (43). The end of the shaft (45) away from the motor (44) is rotatably connected to the middle part of the fixed circular plate (42).

6. The fish-attracting device for fishway inlet water flow based on adaptive flow regulation according to claim 1, characterized in that: The multiple arc-shaped filter plates (22) are tilted in the same direction and are adapted to the direction of water flow, which can drive the rotating rod (21) to rotate under the impact of water flow.

7. A fish-attracting device for fishway inlet water flow based on adaptive flow regulation according to claim 1, characterized in that: The ramp frame opening (14) has a trumpet-shaped structure, with its large-diameter end facing the external water area and its small-diameter end communicating with the interior of the outer shell (11). A sealing gasket is provided at the hinge of the door panel (15) and the outer shell (11). The ends of the multiple rotating rods (21) away from the rotating hole (17) are respectively set in the middle of multiple rotating grooves (16).

8. A fish-attracting device for fishway inlet water flow based on adaptive flow regulation according to claim 5, characterized in that: The upper side of the bait bin (41) is fixedly connected to a protective shell (5), and the motor (44) is located inside the protective shell (5). The protective shell (5) is made of waterproof material.

9. A method for attracting fish to a fishway inlet based on adaptive flow regulation, characterized in that, The fish-attracting device based on adaptive flow regulation of fishway inlet water flow, as described in any one of claims 1-8, comprises: achieving adaptive flow regulation for attracting fish through coordinated operation of water flow linkage and quantitative baiting; After the device is placed at the fishway inlet, the floating airbag (33) of the floating mechanism (3) provides buoyancy, so that the device floats stably on the water surface. The water flow impacts the arc-shaped filter plate (22) and drives the rotating rod (21) to rotate. Through the transmission of multiple sets of pulleys and synchronous belts, the entire water flow linkage fish-catching mechanism (2) operates synchronously. The motor (44) of the quantitative feeding mechanism (4) is started. The motor (44) drives the rotating disc (43) to rotate through the shaft (45). When the through groove (49) of the rotating disc (43) coincides with the feed filter hole (48) of the fixed disc (42), the feed in the feed bin (41) falls automatically to realize quantitative feeding. At the same time, the cleaning brush (47) rotates synchronously to clean the feed residue on the surface of the rotating disc (43). When the water flow rate changes, the rotation speed of the arc-shaped filter plate (22) is adaptively adjusted according to the water flow intensity, thereby changing the frequency of water flow disturbance. Combined with the frequency adjustment of quantitative feeding, it adapts to the fish attraction needs under different flow conditions and guides fish to enter the fish passage through the sloping frame opening (14). The structure of the sloping frame opening (14) can prevent fish from swimming out after entering the shell (11).

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