Fish collecting device

Abstract

The application discloses a fish collecting device, which comprises a fish collecting channel, a fish collecting assembly and a buoyancy assembly. The fish collecting channel is provided with a mounting groove, a sliding groove and a communicating water channel for communicating with a river channel. The communicating water channel is communicated with the sliding groove. The fish collecting assembly is arranged in the mounting groove in a lifting manner. The fish collecting assembly is provided with a fish collecting pool and a fish collecting channel for guiding fish flow. The fish collecting channel extends downward along the water flow direction of the river channel. The fish collecting pool is arranged at the upstream of the fish collecting channel. The fish collecting channel is provided with a fish attracting opening for fish to enter at the end away from the fish collecting pool. The speed of the fish flow is greater than the speed of the water flow of the river channel. The buoyancy assembly comprises a floating body. The floating body is arranged in the sliding groove in a lifting manner. The floating body is connected with the fish collecting assembly. The fish collecting device of the embodiment can make the fish collecting channel synchronously lift along with the water level of the river channel, so that the relative position between the fish collecting channel and the water level of the river channel remains unchanged. Therefore, when the water level of the downstream river channel changes, the fish can still enter the fish collecting pool through the fish attracting opening and along the fish collecting channel, and the fish collecting efficiency is high.

Description

Technical Field

[0001] This invention relates to the technical field of fish passage facilities, and specifically to a fish collection device. Background Technology

[0002] Dams and other hydraulic engineering projects serve functions such as flood control and power generation. However, dams obstruct the longitudinal connectivity of rivers, preventing gene exchange between fish upstream and downstream and disrupting aquatic biodiversity. Currently, constructing fish passageways, fish lifts, and fish collection and transportation systems are effective methods to ensure gene exchange between fish upstream and downstream of dams.

[0003] In related technologies, fish are collected in a fish-collecting container downstream and then transported upstream to facilitate gene exchange between the fish species. However, in practical applications, to meet the needs of reservoir power generation, the downstream water level varies significantly on daily, monthly, and yearly scales. The fish-collecting devices in the downstream river channel cannot adapt to these water level changes, making fish collection in the downstream river channel quite difficult. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention propose a fish collection device in which the fish collection channel can rise and fall synchronously with the river water level, so that the relative positions of the fish attracting mouth and the fish collection channel with the river water level remain unchanged. Thus, when the downstream river water level changes, fish can still enter through the fish attracting mouth and enter the fish collection pond along the fish collection channel, resulting in high fish collection efficiency.

[0006] The fish-collecting device of this invention includes a fish-collecting channel, a fish-collecting component, and a buoyancy component. The fish-collecting channel has an installation groove, a chute, and a connecting waterway for connecting to a river channel, the connecting waterway being connected to the chute. The fish-collecting component is vertically mounted on the installation groove and has a fish-collecting pool and a fish-collecting channel for attracting fish. The fish-collecting channel extends downward along the river flow direction, the fish-collecting pool is located upstream of the fish-collecting channel, and the end of the fish-collecting channel away from the fish-collecting pool has an attracting inlet for fish to enter. The fish-attracting water flow velocity in the fish-collecting channel is greater than the river flow velocity. The buoyancy component includes a float, which is vertically mounted on the chute and connected to the fish-collecting component.

[0007] In some embodiments, the groove is provided with an upper stop portion and / or a lower stop portion for abutting the float, the upper stop portion being located on the upper side of the float and the lower stop portion being located on the lower side of the float.

[0008] In some embodiments, the upper stop portion is connected to an elastic buffer on the side facing the float.

[0009] In some embodiments, the bottom wall of the chute has an inlet / outlet hole that communicates with the connecting waterway, and the cross-section of the inlet / outlet hole is smaller than the cross-section of the chute.

[0010] In some embodiments, the buoyancy assembly further includes a connecting rod, one end of which is connected to the float and the other end of which is connected to the fish-collecting assembly.

[0011] In some embodiments, the fish collection assembly includes a pool body and a plurality of troughs connected sequentially along the water flow direction. The pool body has the fish collection pool, the pool body is connected to the troughs, and the plurality of troughs form the fish collection channel.

[0012] The buoyancy assembly includes multiple float groups, each float group including at least two floats respectively arranged on both sides of the fish collection channel, and each pool and the trough corresponds to at least one float group.

[0013] In some embodiments, two adjacent tanks overlap; and / or the pool body overlaps with the tank.

[0014] In some embodiments, the troughs located at both ends along the extension direction of the fish collection channel are an upper edge trough and a lower edge trough, respectively, with the upper edge trough located upstream of the lower edge trough.

[0015] The pool body overlaps with the upper edge trough, and the bottom wall of the pool body is lower than the bottom wall of the upper edge trough.

[0016] The lower edge trough has the fish-attracting opening at the end away from the upper edge trough, and the bottom wall of the fish-attracting opening is lower than the river water surface.

[0017] In some embodiments, the distance between the bottom wall of the fish-attracting opening and the river surface is greater than 0.5m.

[0018] In some embodiments, the fish collection device further includes a gate, the connecting waterway has a connecting opening, and the gate is slidably connected to the fish collection channel so that the gate can switch between a blocked state that blocks the connecting opening and an open state that opens the connecting opening.

[0019] The fish-attracting device of this invention injects a fish-attracting water flow with a velocity greater than that of the river into the fish-attracting channel, creating a velocity difference between the flow velocity in the fish-attracting channel and the river flow. Since fish have the habit of flowing against the current and the tendency to follow the current, the fish can be induced to flow upstream along the fish-attracting channel into the fish-attracting pond, thereby achieving the aggregation of fish.

[0020] Meanwhile, the chute is connected to the river channel through a connecting waterway, ensuring that the water level in the chute is consistent with the river level. The float rises and falls synchronously with the river level under the buoyancy of the river water in the chute, which in turn drives the fish collection channel and fish collection pond to rise and fall synchronously. The height of the fish collection channel and fish collection pond relative to the river water surface remains unchanged, that is, the height of the fish attraction mouth relative to the river water surface remains unchanged. When the river water level fluctuates, fish can still enter through the fish attraction mouth and enter the fish collection pond along the fish collection channel, resulting in high fish collection efficiency and preventing the phenomenon of difficulty in fish collection due to large differences in downstream water level. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a fish-collecting device according to an embodiment of the present invention.

[0022] Figure 2 along Figure 1 Sectional view of AA.

[0023] Figure 3 along Figure 1 A cross-sectional view of BB.

[0024] Figure 4 along Figure 1 Cross-sectional view of CC (river water level is h1).

[0025] Figure 5 along Figure 1 Cross-sectional view of CC (river water level is h2).

[0026] Figure 6 yes Figure 5 Enlarged schematic diagram of point I in the middle.

[0027] Figure 7 yes Figure 5 Enlarged schematic diagram of section II.

[0028] Figure label:

[0029] 100. Fish collection device;

[0030] 1. Fish collection channel; 11. Installation groove; 12. Slide groove; 121. Inlet / outlet hole; 122. Lower stop; 13. Connecting waterway; 131. Connecting opening; 14. Bottom plate; 141. Second groove; 15. Short side plate; 16. Long side plate; 161. First groove;

[0031] 2. Fish collecting assembly; 21. Pool body; 211. Fish collecting pool; 212. Second overlapping plate; 213. Second rubber pad; 22. Trench; 221. Fish collecting channel; 2211. Fish attracting mouth; 222. First vertical plate; 223. Second vertical plate; 224. Horizontal plate; 225. First overlapping plate; 226. First rubber pad; 227. Upper edge trough; 228. Lower edge trough;

[0032] 3. Buoyancy assembly; 31. Floating body; 32. Connecting rod; 321. First rod segment; 322. Second rod segment; 323. Third rod segment;

[0033] 4. Limiter; 41. Upper stop. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0035] like Figures 1 to 4 As shown, the fish-collecting device 100 of this embodiment includes a fish-collecting channel 1, a fish-collecting component 2, and a buoyancy component 3. The fish-collecting channel 1 has an installation groove 11, a chute 12, and a connecting waterway 13 for connecting to the river. The connecting waterway 13 is connected to the chute 12. The fish-collecting component 2 is vertically mounted on the installation groove 11. The fish-collecting component 2 has a fish-collecting pool 211 and a fish-collecting channel 221 for attracting fish. The fish-collecting channel 221 extends downward along the direction of the river flow. The fish-collecting pool 211 is located upstream of the fish-collecting channel 221. The end of the fish-collecting channel 221 away from the fish-collecting pool 211 has an attracting inlet 2211 for fish to enter. The speed of the attracting water in the fish-collecting channel 221 is greater than the speed of the river flow. The buoyancy component 3 includes a float 31, which is vertically mounted on the chute 12 and connected to the fish-collecting component 2.

[0036] The fish-collecting device 100 of this invention injects a fish-attracting water flow with a velocity greater than that of the river into the fish-collecting channel 221, so that the flow velocity in the fish-collecting channel 221 and the flow velocity in the river are different. Since fish have the habit of going against the current and the tendency to follow the current, they can be induced to go upstream along the fish-collecting channel 221 into the fish-collecting pond 211, so as to achieve the aggregation of fish.

[0037] Meanwhile, the chute 12 is connected to the river through the connecting waterway 13, so that the water level in the chute 12 is consistent with the water level in the river. The float 31 rises and falls synchronously with the water level in the river under the buoyancy of the river water in the chute 12, which in turn drives the fish collection channel 221 and the fish collection pond 211 to rise and fall synchronously, so that the height of the fish collection channel 221 and the fish collection pond 211 relative to the water surface of the river remains unchanged, that is, the height of the fish attraction mouth 2211 relative to the water surface of the river remains unchanged. When the water level of the river fluctuates, fish can still enter through the fish attraction mouth 2211 and enter the fish collection pond 211 along the fish collection channel 221, resulting in high fish collection efficiency and preventing the phenomenon of difficulty in fish collection due to large differences in the downstream water level.

[0038] Optionally, when the number of fish gathered in the fish collection pond 211 reaches a certain level, the fish are harvested manually and then transported upstream by vehicle.

[0039] Optionally, a fish collection box is provided in the fish collection pond 211; all fish entering the fish collection pond 211 are gathered in the fish collection box, and when the number of fish in the fish collection box reaches a certain amount, the fish collection box is lifted upward to the upstream by a winch.

[0040] Optionally, such as Figure 1 and Figure 2 As shown, the cross-section of the chute 12 is circular, and the float 31 is cylindrical. The diameter of the float 31 matches the diameter of the chute 12, so that the float 31 can rise and fall freely within the chute 12.

[0041] As an example, such as Figure 1 and Figure 2 As shown, the fish collection channel 1 is made of concrete and is long and narrow, extending along the direction of the river flow. The fish collection channel 1 includes a bottom plate 14, a short side plate 15, and two parallel long side plates 16. The two long side plates 16 extend along the direction of the river flow, and the two sides of the short side plate 15 are respectively connected to the two long side plates 16. The bottom plate 14, the short side plate 15, and the two long side plates 16 together form the above-mentioned mounting groove 11. The fish collection component 2 is vertically and elliptically installed in the mounting groove 11. The slide 12 is formed on the two long side plates 16, and the float 31 is vertically and elliptically installed in the slide 12.

[0042] like Figure 2 and Figure 3 As shown, the short side plate 15 and the long side plate 16 have the same thickness, and the thickness of the bottom plate 14 is more than twice the thickness of the short side plate 15, so as to improve the fish collection channel 1's ability to resist water flow erosion and improve the service life of the fish collection channel 1.

[0043] Optionally, the fish-collecting component 2 is made of stainless steel.

[0044] Optionally, the slope of the fish collection channel 221 is 1% to 2%.

[0045] Correspondingly, such as Figure 2 and Figure 4 As shown, the upper surface of the long side plate 16 extends downward at an angle along the direction of the river flow, and its slope matches the slope of the fish collection channel 221.

[0046] Optionally, such as Figure 4 As shown, the fish-attracting water is injected from the end of the fish collection channel 221 away from the fish-attracting mouth 2211, flows downward along the fish collection channel 221, and flows into the river through the fish-attracting mouth 2211. Specifically, water can be pumped out or water can be injected through the upstream water supply pipeline, so that the flow velocity of the fish-attracting water is greater than the flow velocity of the downstream river water, thereby attracting fish organisms from the fish-attracting mouth 2211 into the fish collection channel 221 and flowing upstream along the fish collection channel 221 into the fish collection pond 211.

[0047] Optionally, the fish collection channel 221 is equipped with fish-attracting facilities, such as fish-attracting lights.

[0048] In some embodiments, the slide groove 12 is provided with an upper stop portion 41 and / or a lower stop portion 122 for stopping the float 31. The upper stop portion 41 is provided on the upper side of the float 31, and the lower stop portion 122 is provided on the lower side of the float 31.

[0049] In other words, the float 31 is at its lower limit position when it abuts against the lower stop part 122, and at its upper limit position when it abuts against the upper stop part 41. By limiting the vertical floating range of the float 31 through the upper stop part 41 and the lower stop part 122, it can prevent the float 31 from falling off the slide 12 when the water level is too low or falling off the slide 12 when the water level is too high, thereby preventing damage to the fish collection channel 221 of the fish collection component 2 and ensuring the normal use of the fish collection channel 221.

[0050] Specifically, such as Figure 2 and Figure 3 As shown, the chute 12 extends upward through the upper surface of the long side plate 16. The chute 12 has a bottom wall, and the bottom wall of the chute 12 forms the lower stop portion 122, which is used to limit the lower limit position of the float 31. A limiter 4 is provided in the chute 12. The limiter 4 is fixed to the side wall of the chute 12 by bolts. The lower side of the limiter 4 forms the upper stop portion 41, which is used to limit the upper limit position of the float 31.

[0051] Optionally, the limiter 4 is cylindrical and coaxially arranged with the slide 12, and the outer side of the limiter 4 is attached to the side wall of the slide 12.

[0052] Therefore, the lower end face of the limiter 4 can abut against the upper end face of the float 31 to limit the upper limit position of the float 31.

[0053] Optionally, the limiter 4 includes multiple limit blocks, which are evenly distributed along the circumference of the slide groove 12, and the lower surfaces of the multiple limit blocks are on the same horizontal plane.

[0054] Therefore, the lower surfaces of multiple limiting blocks can simultaneously abut against the upper surface of the float 31 to limit the upper limit position of the float 31.

[0055] In some embodiments, an elastic buffer is fixedly connected to the side of the upper stop portion 41 facing the float 31.

[0056] Alternatively, the elastic buffer can be made of rubber, foam, or a buffer spring.

[0057] Therefore, when the float 31 hits the upper stop part 41, it can be buffered to prevent the float 31 from repeatedly hitting the upper stop part 41 when the river water level fluctuates rapidly, thus preventing damage to the float 31.

[0058] In some embodiments, such as Figure 2 and Figure 3 As shown, the bottom wall of the chute 12 has an inlet / outlet hole 121, which is connected to the water channel 13. The cross-section of the inlet / outlet hole 121 is smaller than the cross-section of the chute 12.

[0059] The river water in the downstream channel enters the chute 12 through the connecting waterway 13 and the inlet / outlet hole 121. With the above settings, the inlet / outlet hole 121 has a damping effect. The water flow has greater resistance when passing through the inlet / outlet hole 121, which can prevent the water level in the chute 12 from fluctuating violently in a short period of time and prevent damage to the float 31 and the fish collection component 2.

[0060] Optionally, the diameter of the chute 12 is D, and the diameter of the inlet / outlet hole 121 is d, where 1 / 5D≤d≤1 / 2D.

[0061] like Figure 2 and Figure 3 As shown, each chute 12 has an inlet / outlet hole 121 at its bottom. A connecting waterway 13 is formed on the lower side of the bottom wall of the chute 12 and is connected to the inlet / outlet holes 121 of the multiple chute 12. The connecting waterway 13 has a connecting port 131, which is located at the end of the connecting waterway 13 away from the short side plate 15. River water enters the connecting waterway 13 through the connecting port 131 and then enters the chute 12 through the inlet / outlet hole 121, so that the water level in the chute 12 is consistent with the river water level. The float 31 can rise and fall synchronously with the river water level, thereby driving the fish collecting component 2 to rise and fall synchronously, thus ensuring the normal operation of the fish collecting work when the river water level fluctuates.

[0062] In some embodiments, the buoyancy assembly 3 further includes a connecting rod 32, one end of which is connected to the float 31 and the other end of which is connected to the fish collection assembly 2.

[0063] Specifically, such as Figure 3 As shown, the connecting rod 32 includes a first rod segment 321, a second rod segment 322, and a third rod segment 323 connected in sequence. Both the first rod segment 321 and the third rod segment 323 extend vertically. One end of the first rod segment 321 is fixedly connected to the upper end face of the float 31, and the other end extends upward to the outside of the slide 12. One end of the third rod segment 323 is fixedly connected to the fish collecting assembly 2 (the side wall of the fish collecting pool 211 or the fish collecting channel 221), and the other end extends upward to the outside of the mounting groove 11. The second rod segment 322 is located on the upper side of the fish collecting channel 1 and extends horizontally. The two ends of the second rod segment 322 are fixedly connected to the first rod segment 321 and the third rod segment 323, respectively. This realizes the connection between the float 31 and the fish collecting assembly 2, and the float 31 can drive the fish collecting assembly 2 to rise and fall.

[0064] like Figure 2 and Figure 3As shown, there are multiple connecting rods 32, each corresponding to a float 31. The height of the multiple connecting rods 32 decreases sequentially along the direction of the river flow. The second rod segment 322 is spaced apart from the upper surface of the long side plate 16 to prevent collision with the fish collection channel 1 during the process of the float 31 driving the fish collection component 2 to rise and fall.

[0065] In some embodiments, such as Figures 1 to 4 As shown, the fish collection component 2 includes a pool body 21 and multiple troughs 22 connected sequentially along the water flow direction. The pool body 21 has the aforementioned fish collection pool 211. The pool body 21 is connected to the troughs 22, and the multiple troughs 22 form the aforementioned fish collection channel 221. The buoyancy component 3 includes multiple float groups. Each float group includes at least two floats 31 respectively arranged on both sides of the fish collection channel 221. The pool body 21 and the troughs 22 each correspond to at least one float group.

[0066] When the river surface fluctuates significantly, the heights of the floats 31 within the multiple chutes 12 may be inconsistent. If the fish collection channel 221 is a single, integrated structure, it could easily become stuck or even break during ascent or descent. With the above design, the float groups connected to each chute 22 are not interconnected; that is, each chute 22 is driven independently by its corresponding float group, and the heights of adjacent chutes 22 are adjustable, preventing the fish collection channel 221 from becoming stuck.

[0067] Meanwhile, since the float groups rise and fall with the rise and fall of the river water level, the rise or fall of multiple float groups is basically equal. This allows for the synchronous rise and fall of multiple tanks 22, ensuring the continuity and integrity of the fish collection channel 221. This improves the stability of the fish-attracting water flow along the fish collection channel 221, prevents disturbance to the fish, and is more conducive to the fish collection work.

[0068] Optionally, such as Figures 1 to 3 As shown, the float assembly includes two floats 31 symmetrically arranged along the width of the fish collection channel 1, and each pool body 21 and each trough body 22 corresponds to two float assemblies.

[0069] Thus, the pool body 21 and the tank body 22 achieve stable rising or falling through the four floats 31.

[0070] In some embodiments, two adjacent tanks 22 overlap; and / or the pool body 21 overlaps with the tank 22.

[0071] Specifically, such as Figure 4 and Figure 5As shown, the trough 22 has three structures, namely the first structure, the second structure and the third structure. The first structure of the trough 22 includes an integrally formed first vertical plate 222, a second vertical plate 223 and a horizontal plate 224. The first vertical plate 222 and the second vertical plate 223 are parallel to each other and arranged at intervals along the direction of river flow. The horizontal plate 224 is horizontally arranged between the first vertical plate 222 and the second vertical plate 223, so that the first structure of the trough 22 is U-shaped.

[0072] The difference between the second structure trough 22 and the first structure trough 22 is that the second structure trough 22 does not have a first vertical plate 222, that is, the second structure trough 22 only includes a horizontal plate 224 and a second vertical plate 223.

[0073] The difference between the third structure trough 22 and the first structure trough 22 is that the third structure trough 22 does not have a second vertical plate 223, that is, the third structure trough 22 only includes a horizontal plate 224 and a first vertical plate 222.

[0074] Among them, the troughs 22 located at both ends of the fish collection channel 221 are the upper edge trough 227 and the lower edge trough 228, respectively. The upper edge trough 227 is located upstream of the lower edge trough 228. The upper edge trough 227 adopts the second structure described above, the lower edge trough 228 adopts the third structure described above, and the remaining troughs 22 all adopt the first structure described above.

[0075] To facilitate the description of the overlapping structure of two adjacent tanks 22, the tank 22 located upstream of the two adjacent tanks 22 is named the upper tank, and the tank 22 located downstream is named the lower tank.

[0076] like Figure 5 and Figure 6 As shown, the upper end of the second vertical plate 223 of the upper tank is connected to the first overlapping plate 225. The first overlapping plate 225 extends horizontally to the upper side of the first vertical plate 222 of the lower tank and fits against it. That is, the first overlapping plate 225 of the upper tank overlaps with the first vertical plate 222 of the lower tank, which can prevent the fish-attracting water flow from leaking between the two adjacent tanks 22, thereby ensuring the continuity of the fish collection channel 221.

[0077] A first rubber pad 226 is provided between the upper side of the first overlapping plate 225 of the upper tank and the upper side of the first vertical plate 222 of the lower tank, thereby increasing the sealing at the joint of the two adjacent tanks 22.

[0078] Multiple tanks 22 are connected sequentially from top to bottom in the same manner to form a stepped fish-collecting channel 221. The fish-attracting water flows downward along the fish-collecting channel 221, which can dissipate energy and control the fish-attracting water flow to ensure a smooth flow. In addition, each tank 22 can form an independent fish-collecting trough, where fish can enter to rest as they swim upwards, preventing them from being unable to overcome the impact of the fish-attracting water flow and being swept into the river channel when they are tired.

[0079] In this embodiment of the invention, the fish collection channel 221 is stepped. In other embodiments, the fish collection channel 221 can also be set as a vertical slit or a denier type.

[0080] like Figure 5 and Figure 7 As shown, the body 21 of the fish collection pond 211 is U-shaped. A second overlapping plate 212 is provided on the side of the body 21 near the fish collection channel 221. The second overlapping plate 212 overlaps on the horizontal plate 224 of the upper edge groove 227. This achieves the connection between the fish collection pond 211 and the fish collection channel 221, so that fish can enter the fish collection pond 211 through the fish collection channel 221.

[0081] A second rubber pad 213 is provided between the second overlapping plate 212 and the horizontal plate 224 of the edge groove 22 to increase the sealing of the connection between the fish collection pool 211 and the fish collection channel 221.

[0082] In some embodiments, the troughs 22 located at both ends along the extension direction of the fish collection channel 221 are an upper edge trough 227 and a lower edge trough 228, respectively, with the upper edge trough 227 located upstream of the lower edge trough 228; the pool body 21 overlaps with the upper edge trough 227, and the bottom wall of the pool body 21 is lower than the bottom wall of the upper edge trough 227; the lower edge trough 228 has the aforementioned fish-attracting opening 2211 at one end away from the upper edge trough 227, and the bottom wall of the fish-attracting opening 2211 is lower than the river water surface, with a distance greater than 0.5m between the bottom wall of the fish-attracting opening 2211 and the river water surface.

[0083] Because the bottom wall of the pool 21 is lower than the bottom wall of the upper edge trough 227, fish can gather in the fish collection pool 211, preventing fish from entering the fish collection pool 211 and then swimming outwards. In addition, the bottom wall of the fish attraction inlet 2211 is lower than the river water surface, making the water flow more stable when the fish attraction water flows into the river, preventing disturbance to the fish, and also making it easier for fish in the river to enter the fish attraction inlet 2211.

[0084] Optionally, such as Figure 4 and Figure 5 As shown, the trough 22 located between the upper edge trough 227 and the lower edge trough 228 is the intermediate trough, and at least a portion of the bottom wall of the intermediate trough is higher than the river water surface.

[0085] Therefore, when the fish-attracting water flows downward along the fish-collecting channel 221, most of its flow trajectory is above the river surface, which can reduce the influence of the river flow speed on the fish-attracting water speed, making it easier to control the fish-attracting water speed, and thus more conducive to the fish-collecting work.

[0086] like Figure 4 and Figure 5 As shown, the operating mode of the fish collecting device 100 in this embodiment of the invention is as follows:

[0087] The slope of the fish collection channel 221 is 1% to 2%. When the water level in the downstream river rises from h1 to h2, the river water enters multiple troughs 12 through the connecting waterway 13, pushing multiple floats 31 to rise synchronously, which in turn drives multiple tanks 22 to rise synchronously. The slope of the fish collection channel 221 remains unchanged. Since the tanks 22 and floats 31 are connected by connecting rods 32, and the relative positions of floats 31 and the river surface in the vertical direction remain unchanged, the relative positions of the fish attracting mouth 2211, the fish collection channel 221, and the fish collection pond 211 with the river surface remain unchanged. This ensures the normal operation of the fish collection work when the downstream river water level changes, thereby improving the efficiency of fish collection.

[0088] In some embodiments, the fish collection device 100 further includes a gate, the connecting waterway 13 has a connecting port 131, and the gate is slidably connected to the fish collection channel 1 so that the gate can switch between a blocked state of blocking the connecting port 131 and an open state of opening the connecting port 131.

[0089] During flood discharge, the gate can be switched to the blocking state, and the gate blocks the connecting port 131, which can prevent river water from entering the lower side of the collection channel through the connecting waterway 13, thereby preventing damage to the overall structure of the fish collection channel 1.

[0090] Specifically, such as Figure 1 As shown, the connecting port 131 is located at the end of the fish collection channel 1 away from its short side plate 15. The two long side plates 16 are provided with a first groove 161 on their relatively close sides. The gate is a flat gate, and the two sides of the gate are respectively matched with the two first grooves 161. The gate can be inserted into the two first grooves 161 from the upper side of the fish collection channel 1 to realize the installation of the gate.

[0091] like Figure 2 As shown, the upper surface of the base plate 14 is provided with a second groove 141. When the gate is in the blocked state, the lower side of the base plate 14 is inserted into the second groove 141, making the installation position of the gate more stable.

[0092] Therefore, the gate can block the lower connecting port 131 and the upper fish-attracting port 2211, which can protect the entire fish-collecting device 100 during flood discharge and prevent the overall structure of the fish-collecting device 100 from being damaged.

[0093] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0094] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0095] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0096] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0097] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0098] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A fish-collecting device (100), characterized in that, include: Fish collection channel (1), the fish collection channel (1) has an installation groove (11), a chute (12) and a connecting waterway (13) for connecting to the river, the connecting waterway (13) being connected to the chute (12); Fish gathering component (2), which is vertically and vertically mounted on the mounting groove (11), has a fish gathering pool (211) and a fish gathering channel (221) for fish attraction water flow, the fish gathering channel (221) extends downward along the river water flow direction, the fish gathering pool (211) is located upstream of the fish gathering channel (221), the end of the fish gathering channel (221) away from the fish gathering pool (211) has a fish attraction inlet (2211) for fish to enter, and the fish attraction water flow velocity in the fish gathering channel (221) is greater than the river water flow velocity; The buoyancy assembly (3) includes a float (31), which is vertically and vertically disposed in the chute (12) and is connected to the fish collection assembly (2). The chute (12) is provided with an upper stop part (41) and / or a lower stop part (122) for stopping the float (31). The upper stop part (41) is located on the upper side of the float (31), and the lower stop part (122) is located on the lower side of the float (31). An elastic buffer is connected to the side of the upper stop part (41) facing the float (31). The fish collection component (2) includes a pool body (21) and multiple troughs (22) connected sequentially along the water flow direction. The pool body (21) has the fish collection pool (211). The pool body (21) is connected to the troughs (22). The multiple troughs (22) form the fish collection channel (221). Each trough (22) can form an independent fish collection trough. When fish swim upwards, they can enter the fish collection trough to rest.

2. The fish-collecting device (100) according to claim 1, characterized in that, The bottom wall of the chute (12) has an inlet / outlet hole (121), which is connected to the connecting waterway (13). The cross-section of the inlet / outlet hole (121) is smaller than the cross-section of the chute (12).

3. The fish-collecting device (100) according to claim 1, characterized in that, The buoyancy component (3) also includes a connecting rod (32), one end of which is connected to the float (31) and the other end is connected to the fish collection component (2).

4. The fish-collecting device (100) according to any one of claims 1-3, characterized in that, The buoyancy component (3) includes multiple float groups, each float group including at least two floats (31) respectively arranged on both sides of the fish collection channel (221), and each pool body (21) and the trough body (22) corresponds to at least one float group.

5. The fish-collecting device (100) according to claim 4, characterized in that, Two adjacent tanks (22) overlap; and / or the pool body (21) overlaps with the tank (22).

6. The fish-collecting device (100) according to claim 5, characterized in that, The troughs (22) located at both ends along the extension direction of the fish collection channel (221) are an upper edge trough (227) and a lower edge trough (228), respectively, with the upper edge trough (227) located upstream of the lower edge trough (228). The pool body (21) overlaps with the upper edge groove (227), and the bottom wall of the pool body (21) is lower than the bottom wall of the upper edge groove (227); The lower edge trough (228) has the fish-attracting opening (2211) at the end away from the upper edge trough (227), and the bottom wall of the fish-attracting opening (2211) is lower than the river water surface.

7. The fish-collecting device (100) according to claim 6, characterized in that, The distance between the bottom wall of the fish-attracting inlet (2211) and the water surface of the river channel is greater than 0.5m.

8. The fish-collecting device (100) according to claim 1, characterized in that, The fish collection device (100) also includes a gate, the connecting waterway (13) has a connecting port (131), and the gate is slidably connected to the fish collection channel (1) so that the gate can switch between a blocked state that blocks the connecting port (131) and an open state that opens the connecting port (131).

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