A fishing device used on a fish aggregating platform

Abstract

The present invention discloses a fishing device used on a fish-aggregating platform, comprising: a fish-aggregating box, a fish-attracting lamp and a waterfall-forming mechanism arranged in the flow channel of the fish-aggregating platform. A plurality of barbel openings are provided on one side of the inlet of the fish-aggregating box. The fish-aggregating box is located at the upstream position, and the inlet of the fish-aggregating box is located on the side of the fish-aggregating box close to the downstream. The waterfall-forming mechanism is used to create a small waterfall on one side of the inlet of the fish-aggregating box. The fishing device used on the fish-aggregating platform utilizes the habit of fish liking oxygen and jumping over waterfalls during migration. The small waterfall and the fish-attracting lamp are used to attract fish at the same time, and the small waterfall is used to lure them into the fish-aggregating box, greatly improving the effect of attracting and aggregating fish.

Description

Technical Field

[0001] The present invention relates to the technical field of fishing, in particular to a fishing device used on a fish gathering platform. Background Art

[0002] In order to reduce the impact of hydropower stations on biodiversity, effective measures need to be taken to promote the exchange of fish genetic resources above and below the dams of hydropower stations on major rivers. Therefore, catching fish across the dams has always been an important measure for hydropower stations to implement environmental protection requirements, and fish collection and transportation systems have come into being.

[0003] Traditional fish aggregating and transporting systems primarily consist of a downstream aggregating system, an upstream aggregating system, and a transfer system. The downstream and upstream aggregating systems are the core of the system, while the upstream aggregating system primarily comprises a fish aggregating platform, deep-water nets, a video surveillance system, an underwater monitoring system, mooring facilities, and transfer facilities. During operation, the upstream aggregating system employs a single method of attracting and luring fish (using only fish-attracting lights), resulting in ineffective fish aggregating. Therefore, there is an urgent need to explore effective measures to improve the fish attracting and aggregating effectiveness and maximize the effectiveness of the fish aggregating and transporting system. Summary of the Invention

[0004] In response to the above problems, the inventors have provided a fishing device for use on a fish aggregating platform, which uses the fish's phototaxis and upstream swimming habit to lure fish into the box, thereby solving the problem of poor fish aggregating effect during the fish aggregating process on the fish aggregating platform.

[0005] Specifically, the present invention is achieved as follows:

[0006] A fishing device for use on a fish gathering platform comprises: a fish gathering box and a fish attracting light arranged in a flow channel of the fish gathering platform, a plurality of fish inlet openings being provided on one side of the entrance of the fish gathering box; the flow channel of the fish gathering platform being provided through the platform, and having a water flow inlet and a water flow outlet, with river water flowing in from the water flow inlet upstream and flowing out from the water flow outlet downstream; the fish gathering box being located upstream, and the entrance of the fish gathering box being located on the side of the fish gathering box close to the downstream, and the waterfall-making mechanism being used to create a small waterfall on one side of the entrance of the fish gathering box.

[0007] Furthermore, the waterfall-making mechanism includes:

[0008] A water outlet mechanism is located at one side of the fish collecting box entrance and is higher than the water surface;

[0009] A water collecting mechanism is connected to the water outlet mechanism, and is used to collect river water and provide water flow to the water outlet mechanism; the water flow in the water collecting mechanism flows out from the outlet of the water outlet mechanism;

[0010] The weir head flow channel is located at one side of the fish collecting box entrance and is arc-shaped as a whole. The top end thereof is smoothly connected to the outlet of the water outlet mechanism, and the water flows downward along the arc surface of the weir head flow channel.

[0011] Further, the water outlet mechanism includes an inner diversion pipe and an outer control pipe sleeved on the inner diversion pipe. The inner diversion pipe is communicated with the water collection mechanism. The end of the outer control pipe is rotationally connected with the inner diversion pipe through a connecting block. Water outlet slot holes are provided on both the inner diversion pipe and the outer control pipe. There are two water outlet slot holes on both the inner diversion pipe and the outer control pipe. The outer control pipe is used to adjust the size of the water outlet slot holes on the inner diversion pipe.

[0012] Further, an operating handle is provided on the outer control pipe.

[0013] Further, a transparent support plate is provided on one side of the fish collecting box inlet. A fish inlet hole adapted to the inverted barb mouth is provided on the transparent support plate. The weir head flow channel and the water outlet mechanism are located on the top of the transparent support plate.

[0014] Further, a flexible baffle or a net is provided on the top of the fish collecting box near the water outlet mechanism side. The flexible baffle or the net is arranged obliquely to prevent fish from jumping out of the fish collecting box.

[0015] Further, the water collection mechanism includes: a water pump and a water collection tank fixed on the inner wall of the fish collecting platform flow channel. The water pump is communicated with the water collection tank through a water delivery pipe. The water collection tank is communicated with the water outlet mechanism through a guide pipe. An overflow hole is provided on the water collection tank. A flow stabilizing mechanism for reducing the water flow velocity is provided at the outlet end of the water delivery pipe.

[0016] Further, the outlet section of the water delivery pipe is vertical. The flow stabilizing mechanism includes: a shell with a layered structure and a spiral flow channel disk. The outer diameters of the shell and the spiral flow channel disk gradually increase from top to bottom. The spiral flow channel disk is fixedly connected with the water delivery pipe. A plurality of through holes for water passing are provided thereon. Water flows from the upper layer to the lower layer of the spiral flow channel disk. A plurality of orifice openings are provided between the layers of the shell.

[0017] Further, a first eight-shaped gate and a second eight-shaped gate are provided on the inner wall of the fish collecting platform flow channel. The first eight-shaped gate is close to the water flow outlet of the fish collecting platform flow channel. The second eight-shaped gate is close to the fish collecting box, and the constricted width is smaller than that of the first eight-shaped gate.

[0018] Further, constricted cages for preventing fish from escaping are provided at the outlets of the first eight-shaped gate and the second eight-shaped gate.

[0019] The working principle of the present invention:

[0020] The inner flow channels at the head and tail of the fish-aggregating platform are transparent and are placed in a natural river channel. The fish-aggregating box is located upstream, and the inlet of the fish-aggregating box is on the side of the fish-aggregating box close to the downstream. Fish swim upstream. A small waterfall is created at the inlet of the fish-aggregating box by a waterfall-forming mechanism. The water flow caused by the small waterfall combines oxygen in the air with water, making the oxygen content more sufficient, which can attract fish to gather. Some fish enter the fish-aggregating box through the barbel inlet under the lure of the fish-attracting lamp, and some fish, due to the influence of their habits, will jump over the waterfall and enter the fish-aggregating box.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The fishing device used on the fish-aggregating platform provided by the present invention effectively utilizes the habits of fish migration and oxygen preference, and uses a small waterfall and a fish-attracting lamp to attract fish at the same time, greatly improving the effect of attracting and aggregating fish. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a perspective view of the fishing device used on the fish-aggregating platform in Embodiment 1;

[0024] Figure 2 It is a schematic structural view of the fishing device used on the fish-aggregating platform in Embodiment 1;

[0025] Figure 3 It is a top view of the fishing device used on the fish-aggregating platform in Embodiment 1;

[0026] Figure 4 It is a front view of the drawstring cage in Embodiment 1;

[0027] Figure 5 It is a schematic structural view of the flow-stabilizing mechanism in Embodiment 1;

[0028] Figure 6 It is a sectional view of the flow-stabilizing mechanism in Embodiment 1;

[0029] Figure 7 It is a schematic structural view of the water outlet mechanism in Embodiment 1;

[0030] Figure 8 It is a sectional schematic view when the water outlet mechanism in Embodiment 1 is adjusted;

[0031] Figure 9 It is a usage state diagram of the fishing device used on the fish-aggregating platform in Embodiment 1.

[0032] Reference Signs:

[0033] 1-Fish collecting platform flow channel; 21-First eight-shaped gate; 22-Second eight-shaped gate; 23-Cage; 3-Fish collecting box; 31-Fish bark outlet; 32-Fish attracting light; 4-Transparent support plate; 5-Water collecting mechanism; 51-Mounting plate; 52-Water pipe; 53-Water collecting box; 531-Overflow hole; 54-Flow stabilizing mechanism; 541-Spiral flow channel disk; 542-Through hole; 543-Outer shell; 544-Orifice; 6-Water outlet mechanism; 61-External control tube; 62-Inner guide tube; 63-Operating handle; 64-Connecting block; 65-Water outlet trough hole; 7-Weir head flow channel; 8-Water guide tube; 9-Basket net. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below through specific embodiments with reference to the accompanying drawings.

[0035] Example 1

[0036] like Figures 1-3 As shown, the present invention provides a fishing device for use on a fish aggregating platform, comprising: a fish collecting box 3, a first splayed gate 21, and a second splayed gate 22 disposed within a flow channel 1 of the fish aggregating platform. The flow channel 1 of the fish aggregating platform is disposed throughout the platform and has a water inlet and a water outlet. River water flows in from the upstream water inlet and flows out from the downstream water outlet. The fish collecting box 3 is located upstream. Fish enter the flow channel 1 of the fish aggregating platform from the downstream water outlet. The first splayed gate 21 is located downstream, near the water outlet of the flow channel 1 of the fish aggregating platform, and the second splayed gate 22 is located near the fish collecting box 3. The width of the first splayed gate 21 is no greater than 1 / 3 of the width of the flow channel 1 within the fish aggregating platform, and the width of the second splayed gate 22 is less than the width of the first splayed gate 21. First, the first splayed gate 21 is used to gently guide the fish into the flow channel between the first and second splayed gates 21, 22. Then, the fish are guided to the front of the fish collection box through the second splayed gate 22, which has a smaller opening width. The continuous closing design makes it easy for fish to enter but difficult to exit, which can reduce the number of fish escaping. To further reduce the possibility of fish escaping, a closing cage 23 can be set at the closing point of the first and second splayed gates 21, 22. Figure 4 As shown, the entire constriction cage 23 is made of a flexible material, with braided strips on either side shaped to close toward one end of the fish collection box 3. These strips can also be arranged in a slightly intersecting configuration. Since the ends of the strips are not fixed, fish can swim inward against the intersection of the strips when entering. When fish attempt to swim outward, they cannot push against the intersection. Therefore, once they pass through the constriction cage 23, they cannot return, effectively preventing fish from escaping.

[0037] In addition, since wild fish are usually quite active, to prevent fish from jumping out of the fish collection tank 3, a flexible baffle or net 9 is provided at the position of the fish collection tank 3 near the entrance. The overall net 9 is arranged at an inclination of 60°, that is, the opening of the net 9 faces the direction in which the fish jump in. And because it is made of a flexible net as a whole, the bottom of the net 9 will present a state of being closed at the mouth, which is convenient for fish to jump in, avoids damage when they jump in, and makes it difficult for fish to jump out of the fish collection tank 3.

[0038] The fish collection tank 3 is of a net structure as a whole, and sealed baffles are provided around the bottom. The height of the sealed baffles is 20 cm - 30 cm, which is the part for sealing and retaining water, and is used to retain part of the river water to prevent fish from being separated from the river water and being damaged after the fish collection tank 3 is lifted. An attracting fish lamp 32 is provided in the fish collection tank 3, and a plurality of barbel openings 31 are provided on one side of the entrance of the fish collection tank 3. The barbel openings 31 are made of flexible woven nets, which can effectively prevent fish from escaping from the fish collection tank 3. A waterfall forming mechanism is also provided in the flow channel of the fish collection platform, and the waterfall forming mechanism is used to create a small waterfall on one side of the entrance of the fish collection tank 3. Specifically, the waterfall forming mechanism includes: a water collection mechanism 5, a water outlet mechanism 6 and a weir head flow channel 7. A transparent support plate 4 is provided on one side of the entrance of the fish collection tank 3, and the transparent support plate 4 is provided with a fish inlet hole adapted to the barbel opening 31. The water outlet mechanism 6 and the weir head flow channel 7 are located on the top of the transparent support plate 4. The weir head flow channel 7 is arc-shaped as a whole, and the horizontal included angle of its overflow surface is 45° - 70°, preferably 60°. Its top end is smoothly connected to the outlet of the water outlet mechanism 6. The water flow in the water collection mechanism 5 flows out from the water outlet mechanism 6 and flows downward along the arc surface of the weir head flow channel 7, thereby forming a small waterfall.

[0039] Among them, the water collection mechanism 5 includes: a mounting plate 51, a water delivery pipe 52 and a water collection tank 53. The mounting plate 51 is fixed on the inner wall of the flow channel of the fish collection platform 1 for fixing the water collection tank 53. One end of the water delivery pipe 52 is connected to a water pump, and the other end extends into the water collection tank 53. Its outlet section is vertical, and a flow stabilizing mechanism 54 is provided thereon. The flow stabilizing mechanism 54 is used to reduce the flow rate of the water flow delivered by the water pump, so that the water flow flowing out of the water outlet mechanism 6 is relatively gentle, avoiding the water flow being too fast and causing fish to be unable to jump over the water outlet mechanism 6 when jumping. Figures 5-6As shown in the figure, the steady flow mechanism 54 includes a housing 543 and a spiral flow channel disk 541 in a layered structure. The outer diameters of the housing 543 and the spiral flow channel disk 541 gradually increase from top to bottom. The spiral flow channel disk 541 is provided with a plurality of through holes 542 for water passage, and a plurality of apertures 544 are provided between the layers of the housing 543. After the water flow is pumped into the water collection tank 53, it is first blocked by the top of the housing 543, decelerates and then falls onto the spiral flow channel disk 541. Part of it flows along the spiral flow channel disk 541, and part of it flows from the upper through holes 542 to the lower layer. After the water flow is blocked layer by layer, the flow rate gradually decreases. Since apertures 544 are provided between the layers of the housing 543, the river water will flow out from the apertures 544 during the flowing process, and the water flow in the upper layer flows to the lower layer and finally mixes with the water in the water collection tank 53. To prevent the water volume in the water collection tank 3 from being too large and make the water flow accelerate and flow out under pressure, an overflow hole 531 is provided on the water collection tank 3. When the water volume in the water collection tank 3 is excessive, it can be discharged from the overflow hole 531 to ensure the smoothness of the water outlet.

[0040] As Figures 7-8 shown in the figure, the water outlet mechanism 6 includes an inner diversion pipe 62 and an outer control pipe 61 sleeved on the inner diversion pipe 62. The inner diversion pipe 62 is connected to the water collection tank 3 through a water guide pipe 8. The end of the outer control pipe 61 is rotationally connected to the inner diversion pipe 62 through a connection block 64. Water outlet slots 65 are provided on both the inner diversion pipe 62 and the outer control pipe 61. By rotating the outer control pipe 61, the size of the water outlet slots 65 can be controlled, and thus the water output can be controlled (that is, when the water outlet slots 65 are large, the water output is large; when the water outlet slots 65 are small, the water output is small). When it is necessary to reduce the water output, by rotating the outer control pipe 61, the water outlet slots 65 on the inner diversion pipe 62 and the outer control pipe 61 are displaced, and the amount of water flowing out can be reduced. Preferably, two water outlet slots 65 are provided on both the inner diversion pipe 62 and the outer control pipe 61. While ensuring the water output, the size of a single water outlet slot 65 is reduced, preventing fish from getting stuck in the water outlet slots 65 or jumping into the inner diversion pipe 62, causing fish damage and blocking of the water outlet slots 65. To facilitate the adjustment of the water outlet slots 65, an operation handle 63 is provided on the outer control pipe 61, and the outer control pipe 61 can be rotated by rotating the operation handle 63.

[0041] Specifically, as Figure 9As shown, during actual use, first place the fish collection platform in a natural river channel. The fish collection box 3 is located at the upstream position, and the first eight-shaped gate 21 is located at the downstream position. Due to the migratory characteristics of fish, fish will swim from the downstream to the upstream. After the fish collection platform is arranged, the fish attracting lamp 32 attracts fish. At the same time, after the water pump pumps river water into the water collection tank 53 and reduces it through the flow stabilizing mechanism 54, it gently passes through the water guide pipe 8 and is conveyed to the inner water guide pipe 62, and gently flows out from the water outlet groove holes 65 of the inner water guide pipe 62. The flowing water is guided by the arc-shaped weir head flow channel 7 to form an arc-shaped and relatively gentle small waterfall. At the small waterfall, due to the frequent mixing of water and air, the oxygen content at this place is also relatively high, which can attract fish to gather at this place, thus improving the fish attracting effect. When fish migrate and encounter a waterfall, they will struggle to jump up in an attempt to cross the waterfall and continue to swim upstream against the current. Utilizing this characteristic, after creating a small waterfall, it can lure some fish to cross the waterfall and jump into the fish collection box 3. Together with the inverted barb mouth 31, it not only improves the fish collection effect but also prevents fish from escaping.

[0042] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention pertains, based on the idea of the present invention, several simple deductions, deformations or substitutions can also be made.

Claims

1. A fishing device for use on a fish gathering platform, comprising: A fish collecting box and a fish attracting light are arranged in the flow channel of the fish collecting platform, and a plurality of fish inlet openings are provided on one side of the entrance of the fish collecting box; The flow channel of the fish collecting platform is provided on the fish collecting platform, and has a water inlet and a water outlet. River water flows in from the upstream water inlet and flows out from the downstream water outlet. The fish collecting box is located at an upstream position, and the fish collecting box inlet is located on the side of the fish collecting box close to the downstream. The fishing device further includes: A waterfall-making mechanism is provided in the fish collecting platform and is used to create a small waterfall on one side of the entrance of the fish collecting box; The waterfall making mechanism comprises: A water outlet mechanism is located at one side of the fish collecting box entrance and is higher than the water surface; A water collecting mechanism is connected to the water outlet mechanism, and is used to collect river water and provide water flow to the water outlet mechanism; the water flow in the water collecting mechanism flows out from the outlet of the water outlet mechanism; The weir head flow channel is located on one side of the fish collecting box entrance and is arc-shaped as a whole. The top end thereof is smoothly connected to the outlet of the water outlet mechanism, and the water flows downward along the arc surface of the weir head flow channel. The water outlet mechanism includes an inner guide pipe and an outer control pipe sleeved on the inner guide pipe, the inner guide pipe is connected to the water collecting mechanism, the end of the outer control pipe is rotatably connected to the inner guide pipe through a connecting block, the inner guide pipe and the outer control pipe are both provided with water outlet slots, and there are two water outlet slots on each of the inner guide pipe and the outer control pipe, and the outer control pipe is used to adjust the size of the water outlet slot on the inner guide pipe; The water collection mechanism includes: a water pump and a water collection tank fixed on the inner wall of the flow channel of the fish collection platform, the water pump and the water collection tank are connected through a water pipe, the water collection tank is connected to the water outlet mechanism through a water guide pipe, the water collection tank is provided with an overflow hole, and the outlet end of the water guide pipe is provided with a flow stabilizing mechanism for reducing the water flow rate; The outlet section of the water pipe is vertical, and the flow stabilizing mechanism includes: a shell and a spiral flow channel disk with a layered structure. The outer diameters of the shell and the spiral flow channel disk gradually increase from top to bottom. The spiral flow channel disk is fixedly connected to the water pipe and is provided with a plurality of through holes for water flow. Water flows from the upper layer to the lower layer of the spiral flow channel disk; a plurality of orifices are provided between the layers of the shell.

2. The fishing device for use on a fish gathering platform according to claim 1, wherein: An operating handle is provided on the outer control tube.

3. The fishing device for use on a fish gathering platform according to claim 1, wherein: A transparent support plate is provided on one side of the fish collecting box entrance, and a fish inlet hole adapted to the bark inverting port is provided on the transparent support plate. The weir head flow channel and the water outlet mechanism are located on the top of the transparent support plate.

4. The fishing device for use on a fish gathering platform according to claim 1, wherein: A flexible baffle or basket net is provided on the top of the fish collecting box on the side close to the water outlet mechanism. The flexible baffle or basket net is arranged obliquely to prevent fish from jumping out of the fish collecting box.

5. The fishing device for use on a fish gathering platform according to claim 1, wherein: A first eight-shaped door and a second eight-shaped door are provided on the inner wall of the flow channel of the fish collecting platform. The first eight-shaped door is close to the water outlet of the flow channel of the fish collecting platform, and the second eight-shaped door is close to the fish collecting box, and the width of the bundle opening is smaller than the width of the bundle opening of the first eight-shaped door.

6. The fishing device for use on a fish gathering platform according to claim 5, wherein: The first and second exits of the shaped-eight door are both provided with a restraining cage for preventing fish from escaping.

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