River pollution remediation equipment for water conservancy project

Abstract

The invention relates to the technical field of water pollution remediation, in particular to river pollution remediation equipment for water conservancy projects. Comprising a plurality of floating parts, the floating parts are connected end to end to form a closed frame, any two floating parts are fixedly connected with fixing bases, the fixing bases are rotationally connected with connecting columns, first torsional springs are fixedly connected between the connecting columns and the fixing bases, and a containing frame is jointly and fixedly connected between the two connecting columns; the containing frame is located in a closed frame of the multiple floating pieces, a containing frame is fixedly connected into the containing frame, the containing frame and all the floating pieces are used for providing space for planting of aquatic plants, and the containing frame is provided with a shielding net. In order to protect the aquatic plants and reduce gnawing of aquatic organisms to the aquatic plants, a wall with a telescopic net-shaped structure is arranged on the peripheries of the aquatic plants to separate the aquatic plants from the aquatic organisms, so that normal growth of the aquatic plants is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of water pollution remediation, and in particular to a river pollution remediation device used in water conservancy projects. Background Art

[0002] Water conservancy projects refer to various engineering facilities built to control, utilize and protect surface and groundwater resources, improve the ecological environment, and promote sustainable economic and social development. Common water conservancy projects include reservoirs, dams, sluices, pumping stations, irrigation systems, and river management projects. Among them, river pollution remediation has been a task that has received much attention in recent years, especially in the context of accelerated urbanization and industrialization.

[0003] The so-called river pollution remediation refers to the effective reduction of the concentration of pollutants in the river through various means such as physical, chemical or biological means, and the gradual restoration of its natural ecological functions and water quality. Currently commonly used remediation methods include dredging of bottom sediments, construction of artificial wetlands, aeration and oxygenation of water bodies, and the introduction of aquatic plants for biological remediation.

[0004] In bioremediation technology, lightweight and environmentally friendly materials are usually used to make floating structures, and aquatic plants with purification capabilities are planted on them, thereby achieving the purification effect of the water body while having both landscape value and eco-friendliness.

[0005] However, there are still some problems in the actual application process: for example, aquatic organisms (fish) in the river often gnaw on the roots of aquatic plants, affecting the normal growth of the plants, thereby weakening their ability to absorb and degrade water pollutants, and reducing the overall remediation efficiency. Summary of the Invention

[0006] In order to solve the problems given in the above background technology, the present invention provides a river pollution remediation device for water conservancy projects.

[0007] The technical solution of the present invention is: a river pollution repair equipment for water conservancy projects, including a plurality of floating parts, and the plurality of floating parts are connected end to end to form a closed frame, and any two of the floating parts are fixed with a fixed seat, and the fixed seat is rotatably connected with a connecting column, and a first torsion spring is fixed between the connecting column and the fixed seat, and a holding frame is fixed between the two connecting columns, and the holding frame is located in the closed frame of the plurality of floating parts, and a holding rack is fixed in the holding frame, and the holding rack and all the floating parts are used to provide space for planting aquatic plants, and a shielding net for protecting the root system of aquatic plants is provided on the lower side of the holding frame, and a bottom plate is fixed on the lower side of the shielding net, and a control component is provided on the holding frame, and the control component is used to control the extension and retraction degree of the shielding net.

[0008] Furthermore, a guide member is fixedly connected to the lower side of the bottom plate, and the cross section of the guide member is triangular, and the vertex of the triangle has an arc.

[0009] Furthermore, one side of the shielding net is configured to be arc-shaped to guide impurities in the water.

[0010] Furthermore, the density of the arc-shaped side of the shielding net is greater than the density of the other sides.

[0011] Furthermore, the shielding net is made of a deformable material.

[0012] Furthermore, the control component includes a first sliding frame slidably connected to the holding frame and the holding frame, the first sliding frame is fixed to the base plate, the first sliding frame is slidably connected to a plurality of sliding parts, a first spring is arranged between the sliding parts and the first sliding frame, the holding frame is fixed with a limit frame for limiting the adjacent sliding parts, and an unlocking component is arranged on the limit frame, and the unlocking component is used to squeeze the sliding parts.

[0013] Furthermore, the unlocking component includes an extrusion frame slidably connected to the limit frame, the extrusion frame is used to extrude the adjacent sliding parts, the fixed seat is fixed with a connecting frame, the connecting frame is provided with a support ring, the axis of the support ring coincides with the axis of the adjacent connecting column, the support ring is provided with a guide part, the guide part is slidably connected to a second sliding frame slidably connected to the extrusion frame, the extrusion frame is fixed with a fixing pin, and the second sliding frame is provided with an inclined groove for the fixing pin to slide.

[0014] Furthermore, the guide portion includes two fixed plates fixedly connected to the support ring, one of the fixed plates is fixedly connected to a long arc rod, and the other fixed plate is fixedly connected to a short arc rod, an oblique rod is fixedly connected between the long arc rod and the short arc rod, and the second sliding frame slides along the long arc rod, the oblique rod and the short arc rod.

[0015] Furthermore, it also includes an emergency handling component, which is arranged on the connecting column close to the first sliding frame. The emergency handling component is used to deal with the situation where the flow velocity in the river suddenly increases. The emergency handling component includes an L-shaped rod fixed to the connecting column, and the L-shaped rod is rotatably connected to a limit piece in contact with the connecting column. A second torsion spring is fixed between the L-shaped rod and the limit piece, and a limit ring is fixed in the support ring. The limit ring is used to limit the limit piece. The connecting frame is slidably connected to the support ring, and a second spring is provided between the support ring and the connecting frame.

[0016] Furthermore, the limiting member is an eccentric structure, and the limiting member is rotated along the L-shaped rod to position the limiting ring.

[0017] One or more technical solutions provided in the present invention have at least the following technical effects or advantages: the present invention utilizes a method of planting aquatic plants, whereby oxygen is released through photosynthesis by the aquatic plants, thereby increasing the dissolved oxygen content of the water body, improving the habitat of aquatic organisms, and promoting the growth and reproduction of aquatic organisms. Furthermore, the aquatic plants absorb nutrients such as nitrogen and phosphorus from the water body through their root systems, thereby reducing eutrophication of the water body. Furthermore, to protect the aquatic plants and reduce their grazing by aquatic organisms, a retractable mesh wall is provided around the aquatic plants to separate them from the aquatic organisms. Subsequently, the height of the shielding net covering the aquatic plants is continuously adjusted according to the growth of the aquatic plant roots. When the river flow rate in the river increases, the connecting column and the containing frame are locked in a manner similar to a safety belt locking mechanism, so that during rotation, only the shielding net is driven by the connecting column and the containing frame to adapt to the flow of the river water. This ensures that when the river water flows rapidly, the height of the first sliding frame and the degree of stretching of the shielding net do not change. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 A bottom view of the three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the containing frame of the present invention; Figure 4 An exploded view of the floating member and the fixing seat of the present invention; Figure 5 Schematic diagram of the three-dimensional structure of the positional relationship between the base plate and the guide member of the present invention; Figure 6 It is a three-dimensional structural diagram of the positional relationship between the fixing seat and the connecting column of the present invention; Figure 7 This is a three-dimensional structural diagram of the positional relationship between the connecting column and the containing frame of the present invention; Figure 8 is a three-dimensional structural cross-sectional view of the sliding member of the present invention; Figure 9 This is a sectional view of the three-dimensional structure of the limiting frame of the present invention; Figure 10 This is a sectional view of the three-dimensional structure of the support ring of the present invention; Figure 11 It is a three-dimensional structural diagram of the positional relationship between the limiting member and the limiting ring of the present invention.

[0019] Marked in the figure: 1-floating part, 2-fixing seat, 3-connecting column, 4-holding frame, 5-holding rack, 6-shielding net, 7-bottom plate, 8-guide, 9-first sliding frame, 10-sliding member, 11-limiting frame, 12-extrusion frame, 13-connecting frame, 14-support ring, 15-guide part, 151-fixing plate, 152-arc-shaped long rod, 153-oblique rod, 154-arc-shaped short rod, 16-second sliding frame, 17-fixing pin, 18-L-shaped rod, 19-limiting member, 20-limiting ring. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the scope of protection and application of the present invention.

[0021] Example 1 A river pollution remediation equipment used in water conservancy projects, please refer to Figure 1-Figure 7 , including a plurality of floating members 1, and the plurality of floating members 1 are connected end to end to form a closed frame. In the present invention, the plurality of floating members 1 form a rectangle, which can be modified into any shape in actual use. The two floating members 1 located in the middle of the plurality of floating members 1 are fixedly connected with a fixing seat 2, and the fixing seat 2 is rotatably connected with a connecting column 3. A first torsion spring is fixedly connected between the connecting column 3 and the fixing seat 2, and a holding frame 4 is fixedly connected between the two connecting columns 3. The holding frame 4 is located in the closed frame of the plurality of floating members 1, and a holding rack 5 is fixedly connected to the holding frame 4. The holding rack 5 and all the floating members 1 are used to provide space for planting aquatic plants. The lower side of the holding frame 4 is provided with a device for planting aquatic plants. The shielding net 6 is used to protect the roots of the plants. The first torsion spring between the connecting column 3 and the fixing seat 2 is used to provide supporting force for the connecting column 3, the holding frame 4 and the shielding net 6, so that the holding frame 4 and the shielding net 6 can remain in a vertical state when impacted by the water flow. When using this device, aquatic plants are planted on the holding frame 5, and the polluted river water in the river channel is repaired by the roots of the aquatic plants. The aquatic plants are covered by the shielding net 6 to protect them. The lower side of the shielding net 6 is fixed with a bottom plate 7. When the aquatic plants are placed, the roots of the aquatic plants do not contact the bottom plate 7. A control component is provided on the holding frame 4, and the control component is used to control the extension and contraction degree of the shielding net 6.

[0022] Please refer to Figure 2 and Figure 5 A guide member 8 is fixed to the lower side of the bottom plate 7. The cross-section of the guide member 8 is triangular, and the vertex of the triangle has an arc. When the guide member 8 comes into contact with impurities head-on, the guide member 8, which has a triangular cross-section, guides the impurities while reducing the resistance of the guide member 8 to the water flow.

[0023] Please refer to Figure 2-Figure 7The right side of the shielding net 6 is set to an arc shape to guide impurities in the water. The density of the right side of the shielding net 6 is greater than the density of the other sides. The shielding net 6 is made of a deformable material. After the shielding net 6 is stretched, the pores of the shielding net 6 are increased. Through the above setting, the impurities in the water can move to the front and rear sides after contacting the water-facing side of the shielding net 6, which is used to reduce the impact of river water on the roots of aquatic plants. According to the growth degree of the roots of aquatic plants, the pores of the shielding net 6 are changed, thereby changing the contact degree between the aquatic plants and the water flow.

[0024] Please refer to Figure 4 and Figure 7-Figure 9 The control component includes a first sliding frame 9 that is slidably connected to the holding frame 4 and the holding frame 5. The first sliding frame 9 is fixed to the bottom plate 7. The first sliding frame 9 is slidably connected to a plurality of sliding members 10. A first spring is provided between the sliding member 10 and the first sliding frame 9. The holding frame 4 is fixed with a limit frame 11 for limiting the adjacent sliding members 10. The middle part of the limit frame 11 close to the side of the adjacent sliding member 10 is hollowed out. An unlocking component is provided on the limit frame 11, and the unlocking component is used to squeeze the adjacent sliding members 10. In the process of using this device, in order to ensure that the shielding net 6 is evenly stretched, two sets of control components symmetrically distributed front and back can be installed on the holding frame 4. The sliding member 10 is fixedly connected by two rectangular plates and an L-shaped plate. In this device, a plurality of sliding members 10 are equidistantly distributed. The distance between the sliding member 10 and the first sliding frame 9 is When the first slide frame 9 needs to be reset, all slide members 10 are moved in the direction away from the limit frame 11 so that all slide members 10 are no longer limited by the limit frame 11, and then the first slide frame 9 moves upward. When the states of the first slide frame 9 and the limit frame 11 are the same, the lower side surface of the upper part of the first slide frame 9 contacts the limit frame 11. Figure 8 When the state in the same, all the sliding members 10 are reset under the action of the corresponding first spring, thereby returning to the state Figure 6 and Figure 7 Status in.

[0025] Please refer to Figure 7-10The unlocking assembly includes an extrusion frame 12 slidably connected to the limit frame 11. The extrusion frame 12 is used to squeeze the adjacent sliding member 10. The distance between the two rectangular plates on the sliding member 10 is less than the thickness of the adjacent extrusion frame 12. The fixing seat 2 is fixed with a connecting frame 13. The connecting frame 13 is provided with a support ring 14 (the two are considered to be fixed in this embodiment). The axis of the support ring 14 coincides with the axis of the adjacent connecting column 3. The support ring 14 is provided with a guide portion 15. The guide portion 15 is slidably connected to the extrusion frame 1 The second sliding frame 16 is slidably connected to the extrusion frame 12. The fixing pin 17 is fixed to the second sliding frame 16. The second sliding frame 16 is provided with an oblique groove for the fixing pin 17 to slide. The guide portion 15 includes two fixing plates 151 fixed to the support ring 14. One fixing plate 151 is fixed to an arc-shaped long rod 152, and the other fixing plate 151 is fixed to an arc-shaped short rod 154. An oblique rod 153 is fixed between the arc-shaped long rod 152 and the arc-shaped short rod 154. The second sliding frame 16 moves along the arc-shaped long rod 152, the oblique rod 153 and the arc-shaped short rod 154. The arc-shaped short rod 154 slides, and the contact portion of the second sliding frame 16 and the guide portion 15 is provided with a through groove. The diameter of the through groove is larger than the diameters of the arc-shaped long rod 152, the oblique rod 153 and the arc-shaped short rod 154, and is sufficient to allow the second sliding frame 16 to smoothly pass through the connection between the arc-shaped long rod 152 and the oblique rod 153 and the connection between the oblique rod 153 and the arc-shaped short rod 154. In the initial state, the second sliding frame 16 is located on the arc-shaped long rod 152. When the oblique groove of the second sliding frame 16 squeezes the fixing pin 17 during the upward movement, the fixing pin 17 is fixed. The pin 17 drives the extrusion frame 12 to squeeze the adjacent sliding member 10, so that the adjacent sliding member 10 gradually breaks away from the contact with the limit frame 11. When the second sliding frame 16 is located at the arc-shaped short rod 154, the adjacent sliding member 10 has broken away from the contact with the limit frame 11, and the center of the circle where the arc-shaped long rod 152 is located and the center of the circle where the arc-shaped short rod 154 is located both coincide with the axis of the connecting column 3, but the distance between the circle where the arc-shaped long rod 152 is located and the connecting column 3 is smaller than the distance between the circle where the arc-shaped short rod 154 is located and the connecting column 3.

[0026] Working principle: Before using this device to repair a polluted river channel (the water source in the river channel is running water), the user first plants aquatic plants on the holding rack 5 so that the roots of the aquatic plants are covered by the shielding net 6. Then the user places the device in the river channel, and the device floats on the river surface under the buoyancy provided by all floating parts 1. Finally, the user fixes the device to the area in the river channel that needs to be repaired (it can be connected by a rope or fixed on the wall of the river channel), so that the right side of the device faces the water side, thereby completing the preparation actions before repairing the polluted river channel.

[0027] After completing the preparatory actions of the device for repairing the polluted river channel, the aquatic plants release oxygen through photosynthesis, increase the dissolved oxygen content of the water, improve the habitat of aquatic organisms, promote the growth and reproduction of aquatic organisms, and absorb nitrogen, phosphorus and other nutrients in the water through their roots, reducing eutrophication of the water.

[0028] The water in the river carries impurities and impacts the right side of the shielding net 6 during its flow. Under the effect of the arc shape of the right side of the shielding net 6, the impurities are guided to escape from the right side of the shielding net 6 while reducing the impact force of the water flow on the shielding net 6. Under the effect of the density on the right side of the shielding net 6 being greater than the density on the other sides, part of the water flow is blocked, and the amount of water flow passing through the right side of the shielding net 6 is reduced, so as to protect the roots of aquatic organisms and prevent the roots of aquatic plants from being subjected to long-term impact of the water flow before they are completely stable, thereby avoiding the obstruction of their root growth or damage to their structure, thereby ensuring its efficiency in the process of river pollution remediation and the stable performance of its ecological functions, and guiding the river water through the guide 8 to reduce the impact force of the river water on the lower part of the device.

[0029] As the aquatic plants grow, the roots of the aquatic plants gradually become luxuriant, so that the roots of the aquatic plants and the shielding net 6 jointly intercept the water flow. Therefore, when the roots of the aquatic plants and the shielding net 6 are in contact with the river water, the river water pushes the aquatic plants and the shielding net 6. At this time, the impact force of the river water on the roots of the aquatic plants and the shielding net 6 is greater than the supporting force applied by the first torsion spring on the two connecting columns 3. Therefore, the aquatic plants drive the holding frame 4 and the two connecting columns 3 and the parts thereon to rotate in the direction of the river flow with the two fixed seats 2 as the rotation points (the first torsion spring on the connecting column 3 gradually accumulates force during the rotation process), so that the holding frame 4 and its attached parts are tilted. During the rotation process, the holding frame 4 drives the second sliding frame 16 to slide along the arc-shaped long rod 152 through the limit frame 11 and the extrusion frame 12.

[0030] When the second sliding frame 16 slides from the arc-shaped long rod 152 to the inclined rod 153, the second sliding frame 16 moves in the direction away from the axis of the adjacent connecting column 3. During the movement, the second sliding frame 16 squeezes the fixing pin 17 through the inclined groove thereon. The fixing pin 17 drives the adjacent squeezing frame 12 to squeeze the adjacent sliding member 10, so that the sliding member 10 moves in the direction away from the adjacent second sliding frame 16 and squeezes the adjacent first spring. During the movement of the sliding member 10, it gradually breaks away from the contact with the adjacent limiting frame 11. When the second sliding frame 16 moves from the inclined rod 15 When sliding onto the arc-shaped short rod 154, the slider 10 has broken away from the adjacent limiting frame 11. At this time, the first sliding frame 9 is driven downward by the gravity provided by the bottom plate 7 and the guide member 8, so that the next slider 10 is stuck on the upper side of the adjacent extrusion frame 12. During the downward movement, the bottom plate 7 and the guide member 8 stretch the shielding net 6, expanding the aperture on the right side of the shielding net 6, thereby reducing the resistance when contacting the river water. Through the above action, the height of the shielding net 6 covering the aquatic plants is continuously changed according to the growth of the aquatic plant roots.

[0031] After the resistance of the shielding net 6 in contact with the river water is reduced, the first torsion spring on the connecting column 3 provides a torsion force, so that the connecting column 3 and the containing frame 4 are reset and rotated, and the containing frame 4 and its attached parts are gradually switched from an inclined state to a vertical state. In the above process, the second sliding frame 16 slides along the arc-shaped short rod 154 to the inclined rod 153, and slides from the inclined rod 153 to the arc-shaped long rod 152, so that the second sliding frame 16 gradually moves to the side close to the axis of the adjacent connecting column 3. During the movement, the second sliding frame 16 squeezes the adjacent The fixing pin 17 drives the extrusion frame 12 to move away from the first sliding frame 9, so that the limit frame 11 no longer supports the lower side of the adjacent sliding member 10, and then drives the first sliding frame 9 downward under the action of gravity provided by the bottom plate 7 and the guide member 8, so that the next sliding member 10 contacts the adjacent limit frame 11. Through the above process, the first sliding frame 9 is unlocked and locked while changing the height of the first sliding frame 9. When the height of the first sliding frame 9 needs to be adjusted again, the above operation process can be repeated.

[0032] Example 2: Based on Example 1, please refer to Figure 6 、 Figure 7 、 Figure 10 and Figure 11, also includes an emergency processing component, the emergency processing component is arranged on the connecting column 3 near the first sliding frame 9, in this device, the number of emergency processing components is consistent with the first sliding frame 9, and they are respectively located on the corresponding connecting columns 3, the emergency processing component is used to deal with the situation where the flow velocity in the river suddenly increases, the emergency processing component includes an L-shaped rod 18 fixed to the connecting column 3, the L-shaped rod 18 is rotatably connected to a limit member 19 in contact with the connecting column 3, a second torsion spring is fixed between the L-shaped rod 18 and the limit member 19, a limit ring 20 is fixed in the support ring 14, and the limit ring 20 is used to limit the limit member 19. In embodiment 1, the connecting frame 13 is fixed to the support ring 14, and In this embodiment, the connecting frame 13 is slidably connected to the support ring 14, and a second spring is arranged between the support ring 14 and the connecting frame 13. The limiting member 19 is an eccentric structure. The limiting member 19 is inserted into the limiting ring 20 after rotating along the L-shaped rod 18. The limiting ring 20 is provided with a ring array of latches, and the limiting member 19 is provided with arc-shaped latches. The latches on the two are used to limit the two. When the limiting member 19 contacts the limiting ring 20, the connecting column 3 and the support ring 14 rotate synchronously. At that time, the second sliding frame 16 and the support ring 14 rotate synchronously, and the second sliding frame 16 will not move away from the support ring 14 (refer to the existing seat belt self-locking mechanism).

[0033] Working principle: When the shielding net 6 is pushed by the river water, the connecting column 3 and the containing frame 4 drive the parts thereon to rotate. The connecting column 3 drives the limiting member 19 to rotate through the L-shaped rod 18 and the second torsion spring thereon. When the shielding net 6 is pushed by the river water and the force suddenly increases, the speed of the connecting column 3 is greater than the speed mentioned above. The limiting member 19 rotates along the L-shaped rod 18 under the action of centrifugal force and causes the second torsion spring to store force. After the centrifugal displacement of the limiting member 19, the teeth on it contact the teeth on the inner side of the limiting ring 20, so that the connecting column 3 continues to rotate through the L-shaped rod 18 and the limiting member 1 9. The limiting ring 20, the support ring 14 and the parts thereon rotate synchronously (the support ring 14 slides along the connecting frame 13 and squeezes the adjacent second spring during the rotation process) to achieve the effect of synchronous rotation of the second sliding frame 16 and the support ring 14 when the speed of the connecting column 3 increases, thereby preventing the second sliding frame 16 from still changing the distance between it and the axis of the connecting column 3 when the speed of the connecting column 3 increases. Through the above working principle, when the speed of the connecting column 3 increases (in this case, the flow rate of the river water in the river channel increases), the height of the first sliding frame 9 and the stretching degree of the shielding net 6 will not be changed.

[0034] When the water flow rate in the river channel is restored, the connecting column 3 rotates and resets under the action of the first torsion spring, and the support ring 14 slides and rotates and resets along the connecting frame 13 under the action of the second spring, and the limit member 19 rotates in the opposite direction along the L-shaped rod 18 under the action of the second torsion spring, so that the teeth on the limit member 19 no longer contact the teeth in the adjacent limit ring 20. When the above problem occurs again, the above process can be repeated.

[0035] The above embodiments are provided to persons familiar with the art for implementing or using the present invention. Personnel familiar with the art may make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments.

Claims

1. A river pollution remediation device for water conservancy projects, characterized by: The invention comprises a plurality of floating members (1), wherein the plurality of floating members (1) are connected end to end to form a closed frame, and any two of the floating members (1) are fixedly connected to a fixing seat (2), and the fixing seat (2) is rotatably connected to a connecting column (3), and a first torsion spring is fixedly connected between the connecting column (3) and the fixing seat (2), and a holding frame (4) is fixedly connected between the two connecting columns (3), and the holding frame (4) is located in the closed frame of the plurality of floating members (1), and a holding rack (5) is fixedly connected in the holding frame (4), and the holding rack (5) and all the floating members (1) are used to provide space for planting aquatic plants, and a shielding net (6) for protecting the root system of the aquatic plants is provided on the lower side of the holding frame (4), and a bottom plate (7) is fixedly connected to the lower side of the shielding net (6), and a control component is provided on the holding frame (4), and the control component is used to control the extension and contraction degree of the shielding net (6).

2. A river pollution remediation device for water conservancy projects according to claim 1, characterized in that: A guide member (8) is fixedly connected to the lower side of the bottom plate (7), and the cross section of the guide member (8) is triangular, and the vertex of the triangle has an arc.

3. A river pollution remediation device for water conservancy projects according to claim 2, characterized in that: One side of the shielding net (6) is arranged in an arc shape, and is used to guide impurities in the water.

4. A river pollution remediation device for water conservancy projects according to claim 3, characterized in that: The density of the arc-shaped side of the shielding net (6) is greater than the density of the remaining sides.

5. The river pollution remediation equipment for water conservancy projects according to claim 4 is characterized in that: The shielding net (6) is made of a deformable material.

6. The river pollution remediation equipment for water conservancy projects according to claim 1 is characterized in that: The control component includes a first sliding frame (9) slidably connected to the holding frame (4) and the holding frame (5), the first sliding frame (9) is fixedly connected to the bottom plate (7), the first sliding frame (9) is slidably connected to a plurality of sliding members (10), a first spring is provided between the sliding member (10) and the first sliding frame (9), the holding frame (4) is fixedly connected to a limiting frame (11) for limiting the adjacent sliding members (10), an unlocking component is provided on the limiting frame (11), and the unlocking component is used to squeeze the sliding member (10).

7. A river pollution remediation device for water conservancy projects according to claim 6, characterized in that: The unlocking assembly includes an extrusion frame (12) slidably connected to the limit frame (11), the extrusion frame (12) is used to extrude the adjacent sliding member (10), the fixed seat (2) is fixedly connected to a connecting frame (13), the connecting frame (13) is provided with a support ring (14), the axis of the support ring (14) coincides with the axis of the adjacent connecting column (3), the support ring (14) is provided with a guide portion (15), the guide portion (15) is slidably connected to a second sliding frame (16) slidably connected to the extrusion frame (12), the extrusion frame (12) is fixedly connected to a fixing pin (17), and the second sliding frame (16) is provided with an inclined groove for the fixing pin (17) to slide.

8. The river pollution remediation equipment for water conservancy projects according to claim 7 is characterized in that: The guide portion (15) includes two fixed plates (151) fixedly connected to the support ring (14), wherein one of the fixed plates (151) is fixedly connected to a long arc rod (152), and the other fixed plate (151) is fixedly connected to a short arc rod (154), and an oblique rod (153) is fixedly connected between the long arc rod (152) and the short arc rod (154), and the second sliding frame (16) slides along the long arc rod (152), the oblique rod (153) and the short arc rod (154).

9. The river pollution remediation equipment for water conservancy projects according to claim 8 is characterized in that: The invention also includes an emergency treatment component, which is arranged on the connecting column (3) near the first sliding frame (9). The emergency treatment component is used to deal with the situation where the flow velocity in the river suddenly increases. The emergency treatment component includes an L-shaped rod (18) fixed to the connecting column (3). The L-shaped rod (18) is rotatably connected to a limit member (19) in contact with the connecting column (3). A second torsion spring is fixed between the L-shaped rod (18) and the limit member (19). A limit ring (20) is fixed in the support ring (14). The limit ring (20) is used to limit the limit member (19). The connecting frame (13) is slidably connected to the support ring (14). A second spring is provided between the support ring (14) and the connecting frame (13).

10. The river pollution remediation equipment for water conservancy projects according to claim 9 is characterized in that: The limiting member (19) is an eccentric structure, and the limiting member (19) is rotated along the L-shaped rod (18) to position the limiting ring (20).

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