A device and a method for cleaning up and collecting fish

Abstract

The application provides a device and a running method for cleaning pollution and collecting fish, which comprises a trash rack, one end of the trash rack is installed on a connecting rod, the bottom end of the connecting rod is in sliding fit with a trash rack track, the trash rack track is arranged on the upstream of a river section and is fixed with a river bank, the other end of the trash rack is wound on a storage rod, the storage rod is arranged in sliding mode on a trash rack rear slide rail, and the trash rack rear slide rail is fixed on the lower end of a trash cleaning box; a bubble fish guiding rack is connected to the connecting rod, and the other end of the bubble fish guiding rack is connected to a fish collecting box. The device can satisfy the cleaning and fish collecting operations in the same space of a river channel without interference, the trash rack in the fixed shaft mechanical rotation can effectively avoid the pollution blocking problem while achieving good trash blocking effect, the collected pollutants can flow into the trash cleaning box under the assistance of a trash suction device, manual fishing and cleaning are not needed, and the human resources are saved to a certain extent.

Description

Technical Field

[0001] This invention belongs to the field of ecological hydraulic engineering and relates to an environmentally friendly facility that integrates fish attraction in different water depths and the collection and cleaning of floating debris in the river, enabling alternating operations of fish passage and pollution removal in the river. Background Technology

[0002] Due to exposed riverbeds and pollution from human activities, various debris such as leaves, branches, weeds, plastic bags, and bottles easily float and accumulate on the water surface, polluting the water and clogging the river. Currently, most river cleaning relies on traditional debris barriers and manual assistance, which is not only inefficient and ineffective, but also involves high labor intensity and risk during manual cleaning operations.

[0003] Existing water conservancy and hydropower projects have severely impacted fish migration, cutting off their upstream routes, damaging the integrity of fish habitats, and threatening fish reproduction. To implement fish conservation and ecological compensation, scholars both domestically and internationally have proposed various fish protection methods and engineering measures, including fish collection facilities. Currently, the fish collection process and the river dredging process are relatively independent, and the same engineering facility cannot simultaneously meet the needs of dredging and fish collection within the same river area. Summary of the Invention

[0004] This invention addresses existing problems by designing a user-friendly fish-collecting and pollution-clearing facility. It provides a device that combines pollution clearing and fish collection, allowing for simultaneous pollution clearing and fish collection within the same space of the river without interference. Its fixed-axis mechanically rotating debris barrier effectively prevents pollution blockage while achieving good debris interception. Collected pollutants, aided by a suction device, flow downstream into the cleaning tank, eliminating the need for manual retrieval and saving manpower. When the facility is set to fish-collecting mode, the fish-guiding section forms a bubble curtain, safely and effectively guiding fish to the tiered fish collection tank, thus achieving classified fish collection.

[0005] To achieve the above-mentioned technical features, the present invention aims to provide a device that combines pollution removal and fish collection, comprising a pollution barrier, one end of which is mounted on a connecting rod, the bottom end of which is slidably engaged with a pollution barrier track, the pollution barrier track being located upstream of a river section and fixed to the riverbank, the other end of which is wound around a receiving rod, the receiving rod being slidably mounted on a rear slide rail of the pollution barrier, the rear slide rail of which is fixed to the lower end of a pollution removal box; an air bubble fish guide is connected to the connecting rod, the other end of which is connected to a fish collection box.

[0006] The debris barrier is made of coarse nylon rope netting, with the nylon ropes thickened to prevent scratching fish, and the surface is coated with polyurethane coating to prevent the debris barrier from being corroded underwater. The coarse nylon rope net is woven from coarse nylon rope. The mesh size of the coarse nylon rope net depends on the size of the garbage in that section of the river to ensure effective pollution interception.

[0007] The bottom end of the connecting rod adopts a ball head structure, which slides and limits the fit with the track groove of the trash rack track.

[0008] The trash rack track is fixedly connected to the fixing plate, which is fixed to the inner wall of the riverbank; the inner side of the trash rack track adopts a bayonet design to ensure that the trash rack can move flexibly.

[0009] The storage rod has a rotating column in the middle that connects to the end of the trash rack and is equipped with a spring. The side opening of the storage rod allows the trash rack to rotate freely for retraction and extension, and the effective trash-blocking length of the trash rack can be adjusted according to actual needs.

[0010] The bottom of the cleaning tank is equipped with a turbine, and the rotation of the turbine continuously draws away the water on the upper surface of the cleaning tank, creating a water pressure difference between the inside and outside of the tank. The water pressure is lower inside the cleaning tank and higher outside, which drives the water to flow into the tank, thereby also driving the river garbage into the tank.

[0011] The cleaning tank is equipped with a filter screen in the lower middle part, which allows water to pass through but prevents garbage from passing through. The filter screen collects garbage in the upper part of the cleaning tank, and the lower part of the filter screen is a turbine, the turbine speed of which is controlled by a corresponding motor.

[0012] The bubble fish guide includes an underwater fish guide, with multiple air outlets at the upper end of the fish guide and compressed bubbles ejected from the air outlets to form a bubble curtain. By taking advantage of the fish's tendency to avoid bubbles, the fish are guided to enter the fish collection box along the direction of the fish guide.

[0013] The fish collection box includes a front fish collection box and a rear fish collection box arranged vertically. The inlet of the front fish collection box is a round hole with a large end and an inward concave shape, which ensures that fish can enter but not exit to a certain extent. The rear end of the front fish collection box is not sealed and is directly connected to the rear fish collection box. The inlet of the rear fish collection box is small so that fish can be collected according to size. The fish collection boxes are arranged in two rows to collect fish at different water depths. The frame of the fish collection box is a steel structure with an external net, so that the collected fish are always in a moving water environment.

[0014] A method for operating a device that combines pollution removal and fish collection includes the following steps: The debris barrier is initially in the debris-blocking state. At this time, one end of the debris barrier on the connecting rod slides to the debris barrier track near the shore where the fish collection box is located, and the other end of the debris barrier on the receiving rod slides to the rear slide rail of the debris barrier near the shore where the cleaning box is located. This intercepts the floating debris. When the debris accumulates to a certain amount, the receiving rod slides along the rear slide rail of the debris barrier to the end of the cleaning box away from the shore. The debris is then collected between the debris barrier and the cleaning box, and the cleaning box begins to work, continuously sucking the debris into the box. When the bubble fish guide bar moves from the side of the fish collection box on the debris barrier track to the side of the debris cleaning box, the bubble fish guide bar begins to guide the fish. The air outlet sprays out compressed bubbles. In order to escape these bubbles, the fish will follow the direction of the fish guide bar and enter the fish collection box at the end. The fish collection box is designed with a concave structure and uses a mesh structure on a steel frame. It also has a double-layer design on the top, bottom, front, and back, which can collect fish in different categories. After the water has been cleaned and the fish have been gathered, it flows downstream through the guide walls on both sides.

[0015] The present invention has the following beneficial effects: 1. This invention enables large-area interception and timely removal of debris. The debris barrier spans the entire canal, intercepting floating garbage across the entire cross-section. Furthermore, the track's structural features allow the barrier to move along the track to its end, thereby drawing the garbage towards the cleaning bin for timely removal, reducing the workload of manual operation.

[0016] 2. This invention enables eco-friendly fish collection. Fish guide grids are a commonly used fish-guiding measure both domestically and internationally. Similar to a bubble curtain structure, compressed bubbles are generated by two rows of air holes at the top of the fish guide grid. Studies on fish behavior show that fish will follow the direction of the fish guide grid into the fish collection box to avoid these bubbles, thus achieving harmless fish collection.

[0017] 3. The equipment of this invention is flexible and convenient to maintain. Since both the debris barrier and the fish guide can be moved to the shore, maintenance and repair are easy. Furthermore, the alternating operation of the debris barrier and the fish guide, along with real-time cleaning, extends the service life of the device and reduces energy consumption. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the pollution interception operation of the present invention.

[0020] Figure 2 This is a schematic diagram of the cleaning operation status of the present invention.

[0021] Figure 3 This is a schematic diagram of the fish-collecting working state of the present invention.

[0022] Figure 4 This is a schematic diagram of the overall structure from one perspective of the present invention.

[0023] Figure 5 This is a schematic diagram of the trash rack structure of the present invention.

[0024] Figure 6 This is a schematic diagram of the cleaning box structure of the present invention.

[0025] Figure 7 This is a schematic diagram of the fish guide grid structure of the present invention.

[0026] Figure 8 This is a schematic diagram of the concave layered fish collection box structure of the present invention.

[0027] In the diagram: 1. Trash barrier track; 2. Cleaning box; 3. Bubble fish guide; 4. Connecting rod; 5. Fixing plate; 6. Front fish collection box; 7. Rear fish collection box; 8. Trash barrier; 9. Storage rod; 10. Rear slide rail of trash barrier. Detailed Implementation

[0028] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0029] Example 1: See Figure 1-8 A device combining pollution removal and fish collection includes a pollution barrier 8. One end of the pollution barrier 8 is mounted on a connecting rod 4, and the bottom end of the connecting rod 4 is in sliding engagement with a pollution barrier track 1. The pollution barrier track 1 is located upstream of the river section and fixed to the riverbank. The other end of the pollution barrier 8 is wound around a receiving rod 9, which is slidably mounted on a rear slide rail 10 of the pollution barrier. The rear slide rail 10 of the pollution barrier is fixed to the lower end of a pollution removal box 2. An air bubble fish guide 3 is connected to the connecting rod 4, and the other end of the air bubble fish guide 3 is connected to a fish collection box. This device allows for pollution removal and fish collection operations to be carried out simultaneously in the same space of the river without interference. Its fixed-axis mechanically rotating pollution barrier achieves good pollution removal while effectively avoiding the problem of pollutant blockage. The collected pollutants flow downstream into the pollution removal box with the assistance of a suction device, eliminating the need for manual retrieval and cleaning, thus saving manpower to a certain extent. When the facility is set to fish-collecting mode, the fish-guiding section forms a bubble curtain, which safely and gently guides the fish to swim smoothly towards the tiered fish collection box, thereby achieving classified fish collection. In actual use, the connecting rod 4 slides along the debris barrier track 1, thereby switching the positions of the debris barrier 8 and the bubble fish guide 3, thus achieving the two different states of debris blocking and fish collection, to achieve the purpose of garbage collection and fish collection respectively.

[0030] Furthermore, the debris barrier 8 is made of coarse nylon rope mesh. The nylon rope is thickened to prevent scratching fish, and its surface is coated with polyurethane paint to prevent underwater corrosion. The coarse nylon rope mesh is woven from coarse nylon rope, and the mesh size depends on the size of the debris in the river section to ensure effective debris interception. The polyurethane coating mentioned above prevents underwater corrosion while being pollution-free.

[0031] Furthermore, the bottom end of the connecting rod 4 adopts a ball-head structure, which slides and limits its engagement with the track groove of the trash rack track 1. The position of the trash rack 8 can then be adjusted by sliding the connecting rod 4.

[0032] Furthermore, the trash rack track 1 is fixedly connected to the fixing plate 5, which is fixed to the inner wall of the riverbank; the inner side of the trash rack track 1 adopts a bayonet design to ensure that the trash rack 8 can move flexibly. The bayonet design on the inner side of the trash rack track 1 allows the trash rack to move flexibly.

[0033] Furthermore, the storage rod 9 has a rotating column in the middle that connects to the end of the trash rack 8 and is equipped with a spring. The side opening of the storage rod 9 allows the trash rack 8 to rotate freely for retraction and extension, and the effective trash-blocking length of the trash rack 8 can be adjusted according to actual needs. The length can be adjusted to meet different position adjustment requirements.

[0034] Furthermore, a turbine is installed at the bottom of the cleaning tank 2, and the rotation of the turbine continuously draws away the water on the upper surface of the cleaning tank, creating a water pressure difference between the inside and outside of the tank. The water pressure is lower inside the cleaning tank and higher outside, which drives the water to flow into the tank, thereby also driving the river garbage into the tank.

[0035] Furthermore, a filter screen is installed in the lower middle part of the cleaning tank 2. Water can pass through the filter screen, but garbage cannot. The filter screen collects garbage in the upper part of the cleaning tank, and the lower part of the filter screen is a turbine. The turbine speed is controlled by a corresponding motor. The filter screen can collect garbage on the one hand, and protect the turbine on the other hand.

[0036] Furthermore, the bubble fish guide gate 3 includes an underwater fish guide gate with multiple air outlets at its upper end. Compressed bubbles are ejected from these outlets to form a bubble curtain. Utilizing the fish's avoidance behavior towards these bubbles, the fish are guided along the direction of the fish guide gate into the fish collection box. The bubble fish guide gate 3 enables fish collection. Studies of fish behavior show that fish will follow the direction of the fish guide gate into the fish collection box to avoid the bubbles, thus achieving harmless fish collection. The bubbles are generated by a corresponding aerator within the fish guide gate, and the density of the compressed bubbles is determined by the local water flow velocity.

[0037] Furthermore, the fish collection box includes a front fish collection box 6 and a rear fish collection box 7 arranged vertically. The inlet of the front fish collection box 6 is a round hole with a large end and an inward concave shape, thereby ensuring that fish can enter but not exit to a certain extent. The tail of the front fish collection box 6 is not sealed and is directly connected to the rear fish collection box 7. The inlet of the rear fish collection box 7 is small so that fish can be collected according to size. The fish collection boxes are arranged in two rows to collect fish at different water depths. The frame of the fish collection box is a steel structure with an external net, so that the collected fish are always in a moving water environment.

[0038] Example 2: A method for operating a device that combines pollution removal and fish collection includes the following steps: The debris barrier 8 is initially in the debris-blocking state. At this time, one end of the debris barrier 8 located on the connecting rod 4 slides to the debris barrier track 1 near the bank where the fish collection box is located, and the other end of the debris barrier 8 located on the receiving rod 9 slides to the rear slide rail 10 near the bank where the cleaning box 2 is located. See details below. Figure 1 At this point, the debris barrier 8 is located between points B and C, thus intercepting the floating debris. When the debris accumulates to a certain amount, the collection rod 9 is slid along the rear slide rail 10 of the debris barrier to the end of the cleaning box 2 away from the shore. That is, at this point, the collection rod 9 moves from point C to point D along the track. (See...) Figure 2 The garbage is collected between the trash rack 8 and the cleaning box 2. The cleaning box 2 starts to work, continuously sucking the garbage into the box. See Figure 3 When the bubble fish guide grid 3 moves from the side of the fish collection box on the debris barrier track 1 to the side of the debris cleaning box 2, that is, when the fish guide grid moves from point B to point A, the bubble fish guide grid 3 starts to guide fish. The air outlet sprays out compressed bubbles. In order to escape these bubbles, the fish will follow the direction of the fish guide grid and enter the fish collection box at the end. The fish collection box is designed with a concave structure and uses a mesh structure on a steel frame. It also has a double-layer design on the top, bottom, front, and back, which can collect fish in different categories. After the water has been cleaned and the fish have been gathered, it flows downstream through the guide walls on both sides.

Claims

1. A device that combines cleaning and fish collection, characterized in that, The system includes a debris barrier (8), one end of which is mounted on a connecting rod (4). The bottom end of the connecting rod (4) is in sliding fit with the debris barrier track (1). The debris barrier track (1) is located upstream of the river section and fixed to the riverbank. The other end of the debris barrier (8) is wound around a receiving rod (9). The receiving rod (9) is slidably mounted on the rear slide rail (10) of the debris barrier. The rear slide rail (10) of the debris barrier is fixed to the lower end of the cleaning box (2). A bubble fish guide (3) is connected to the connecting rod (4). The other end of the bubble fish guide (3) is connected to the fish collection box. The cleaning box (2) and the fish collection box are located on different banks.

2. The device for both cleaning and fish collection according to claim 1, characterized in that: The debris barrier (8) is made of coarse nylon rope netting, with the nylon ropes thickened to prevent scratching fish, and the surface is coated with polyurethane coating to prevent the debris barrier from being corroded underwater. The coarse nylon rope net is woven from coarse nylon rope. The mesh size of the coarse nylon rope net depends on the size of the garbage in that section of the river to ensure effective pollution interception.

3. The device for both cleaning and fish collection according to claim 1, characterized in that: The bottom end of the connecting rod (4) adopts a ball head structure, which is slidably limited to the track groove of the trash rack track (1).

4. The device for both cleaning and fish collection according to claim 1, characterized in that: The trash rack track (1) is fixedly connected to the fixing plate (5), and the fixing plate (5) is fixed on the inner side wall of the riverbank; the inner side of the trash rack track (1) adopts a bayonet design to ensure that the trash rack (8) can move flexibly.

5. The device for both cleaning and fish collection according to claim 2, characterized in that: The storage rod (9) has a rotating column in the middle that connects to the trash rack (8). The side opening of the storage rod (9) allows the trash rack (8) to rotate freely for storage and release, and the effective trash-blocking length of the trash rack (8) can be adjusted according to actual needs.

6. The device for both cleaning and fish collection according to claim 1, characterized in that: The bottom of the cleaning tank (2) is equipped with a turbine, and the water on the upper surface of the cleaning tank is continuously pumped away by the rotation of the turbine, so that a water pressure difference is generated inside and outside the tank. The water pressure inside the cleaning tank is lower than that outside, which drives the water to flow into the tank and thus drives the river garbage to flow into the tank.

7. The device for both cleaning and fish collection according to claim 6, characterized in that: The cleaning box (2) is equipped with a filter screen in the middle and lower part. Water can pass through the filter screen, but garbage cannot pass through. The filter screen collects garbage in the upper part of the cleaning box. The lower part of the filter screen is a turbine, and the turbine speed is controlled by a corresponding motor.

8. The device for both cleaning and fish collection according to claim 1, characterized in that: The bubble fish guide (3) includes a fish guide that is underwater. The upper end of the fish guide is provided with multiple air holes, and compressed bubbles are ejected from the air holes to form a bubble curtain. The fish avoidance behavior of the bubbles is utilized to guide the fish into the fish collection box along the direction of the fish guide.

9. The device for both cleaning and fish collection according to claim 1, characterized in that: The fish collection box includes a front fish collection box (6) and a rear fish collection box (7) arranged vertically. The inlet of the front fish collection box (6) is a round hole with a large end and an inward concave shape, which ensures that fish can enter but not exit to a certain extent. The tail of the front fish collection box (6) is not sealed and is directly connected to the rear fish collection box (7). The inlet of the rear fish collection box (7) is small so that fish can be collected according to their size. The fish collection boxes are arranged in two rows to collect fish at different water depths. The frame of the fish collection box is a steel structure with an external net so that the collected fish are always in a moving water environment.

10. The method of operating the device for both cleaning and fish collection as described in any one of claims 1-9, characterized in that, Includes the following steps: The debris barrier (8) is initially in the debris-blocking state. At this time, the debris barrier (8) at one end of the connecting rod (4) slides to the debris barrier track (1) near the shore where the fish collection box is located, and the debris barrier (8) at one end of the receiving rod (9) slides to the debris barrier rear slide rail (10) near the shore where the cleaning box (2) is located, thereby intercepting the floating garbage by the debris barrier (8). When the garbage accumulates to a certain amount, the receiving rod (9) slides along the debris barrier rear slide rail (10) to the end of the cleaning box (2) away from the shore. The garbage is collected between the debris barrier (8) and the cleaning box (2), and the cleaning box (2) starts to work, continuously sucking the garbage into the box. When the bubble fish guide (3) moves from the side of the fish collection box on the debris barrier track (1) to the side of the debris cleaning box (2), the bubble fish guide (3) starts to guide fish. The air outlet sprays out compressed bubbles. In order to escape these bubbles, the fish will enter the fish collection box at the end along the direction of the fish guide. The fish collection box is designed with a concave structure and uses a mesh structure on a steel frame. It also has a double-layer design on the top, bottom, front, and back, which can collect fish in different categories. After the water has been cleaned and the fish have been gathered, it flows downstream through the guide walls on both sides.

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