Reservoir intake protection device

Abstract

This utility model discloses a reservoir intake protection device in the field of water conservancy engineering technology, including a collar, a barrier net fixed to the circular cross-section of the collar, a motor fixed to the inner wall of the collar via a bracket, and a cutting blade fixed to the output end of the motor via a rotating shaft. The cutting blade is in contact with the outer surface of the barrier net. Several limiting mechanisms are evenly arranged on the surface of the collar. The extension length of the anti-slip top block can be flexibly adjusted by rotating the collar to adapt to intakes of different sizes. At the same time, the cutting blade is directly driven to rotate by the motor shaft. The blade is perpendicular to and in close contact with the barrier net surface, cutting the attached aquatic plants, tangled debris, and other imperfections into small pieces that can be carried away by the water flow. The barrier net can be restored to its permeability without stopping the machine, reducing the need for manual cleaning and lowering maintenance costs and workload.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, specifically to a protective device for reservoir intake. Background Technology

[0002] In water conservancy engineering systems, reservoir intakes serve as crucial nodes connecting water sources and supply systems. Their stable operation directly impacts the safety of water supply for agricultural irrigation, industrial production, and residential use. However, as open ecosystems, reservoirs are constantly plagued by various debris, including naturally occurring branches, fallen leaves, and aquatic plants, as well as discarded plastic waste and fabrics. When this debris enters the intake with the water flow, it causes multi-dimensional negative impacts on the water intake system: at best, it accumulates inside the intake pipes, reducing the cross-sectional area and significantly decreasing water intake efficiency; at worst, it causes pipe blockages, leading to frequent shutdowns of water pumps and other intake equipment due to excessive load, and even serious malfunctions such as impeller wear and motor burnout. This not only increases equipment maintenance costs but may also cause regional water supply interruptions, adversely affecting social production and daily life.

[0003] To address the aforementioned issues, existing technologies commonly employ protective netting as the first line of defense at water intakes. However, practice has shown that traditional protective netting suffers from numerous insurmountable drawbacks in practical applications. Firstly, regarding fixing methods, traditional netting often uses simple bolt connections or rope bindings. This method is insufficient to withstand the continuous impact of reservoir water flow and the external forces caused by water level changes. After prolonged use, the netting is prone to loosening, displacement, or even damage, leading to a failure of its protective function and allowing debris to easily enter the water intake pipe. Secondly, in terms of maintenance and cleaning, the netting's structure easily causes debris to entangle and accumulate. Over time, this accumulated debris gradually clogs the mesh, significantly reducing flow capacity and forcing the water intake system to frequently shut down for manual cleaning. This cleaning method not only requires substantial manpower and resources but also interrupts water intake operations due to downtime, further increasing operating costs and management workload.

[0004] Furthermore, the intake sizes, water flow velocities, and types of debris vary significantly among different reservoirs. Traditional protective nets, often with fixed specifications, are ill-suited to diverse application scenarios. For example, in reservoir areas with dense aquatic plants, the mesh of the protective net is easily clogged; and at intakes with high flow velocities, the structural strength of the net is often insufficient to withstand the impact of the water flow. These problems mean that traditional protective nets cannot meet the operational requirements of modern reservoir water intake systems in terms of protective effectiveness, stability, and adaptability.

[0005] In summary, there is an urgent need in the field of reservoir intake protection for a new type of protective device that can balance protection reliability, ease of maintenance, and environmental adaptability. This device would address the problems of traditional protective nets, such as insecure fixing, easy clogging, difficulty in cleaning, and poor adaptability. In this way, the efficient and stable operation of the water intake system can be guaranteed, operation and maintenance costs can be reduced, and the overall benefits of water conservancy projects can be improved. Utility Model Content

[0006] The purpose of this invention is to provide a protective device for reservoir intakes. The barrier net of this device is not easily blocked, and the device can adapt to different intake sizes.

[0007] The technical solution adopted by this utility model is a reservoir intake protection device, including a collar, a barrier net fixed to the circular cross section of the collar, a motor fixed to the inner wall of the collar by a bracket, and a cutting blade fixed to the output end of the motor by a rotating shaft, the cutting blade being in contact with the outer surface of the barrier net. Several limiting mechanisms are evenly distributed on the surface of the collar.

[0008] The features of this utility model also include: The limiting mechanism includes a rotating sleeve with one end open, a lead screw fixed along its axial direction, an internal threaded slider sleeved on the surface of the lead screw, a hexagonal slide bar fixed on the end face of the internal threaded slider facing the opening of the rotating sleeve, and an anti-slip top block fixed on the end of the hexagonal slide bar away from the internal threaded slider. The collar surface has a through hole with the same cross-section as the hexagonal slide rod. The hexagonal slide rod passes through the through hole, and the anti-slip top block is located inside the collar.

[0009] A spring is fitted onto the surface of the lead screw. One end of the spring is fixed to the rotating sleeve, and the other end abuts against the internal threaded slider.

[0010] The lead screw, rotating sleeve, and hexagonal slide bar share the same axis.

[0011] The cutting blade is set perpendicular to the surface of the barrier mesh.

[0012] The rotating shaft is set perpendicular to the center of the barrier net, and there are multiple cutting blades that are evenly fixed on the surface of the rotating shaft.

[0013] The surface of the anti-slip top block away from the hexagonal slide bar has anti-slip texture.

[0014] The anti-slip top block is made of rubber.

[0015] The beneficial effects of this utility model are: This utility model's limiting mechanism flexibly adjusts the extension length of the anti-slip top block by rotating the sleeve, adapting to water inlets of different sizes. Simultaneously, the cutting blade is directly driven to rotate via the motor shaft, with the blade perpendicular to and tightly fitted to the barrier net surface. The cutting blade cuts attached aquatic plants, tangled debris, and other impurities, breaking them down into smaller pieces that can be carried away by the water flow. The barrier net's permeability can be restored without stopping the machine, reducing the need for manual cleaning and lowering maintenance costs and workload. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the limiting mechanism structure of this utility model; Figure 3 This is a schematic diagram of the overall front structure of this utility model; Figure 4 This is a schematic diagram of the installation position of the rotating sleeve of this utility model.

[0017] In the diagram: 1. Limiting mechanism, 2. Collar, 3. Barrier mesh, 4. Spring, 5. Lead screw, 6. Internal threaded slider, 7. Rotating sleeve, 8. Hexagonal slide bar, 9. Anti-slip top block, 10. Cutting blade, 11. Rotating shaft, 12. Motor, 13. Through hole. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0019] Example 1 The reservoir intake protection device provided in this embodiment, such as Figure 1 As shown, it includes a circular collar 2, with a barrier net 3 fixed to one circular end face of the collar 2. The barrier net 3 is a circular metal mesh with fine and uniform mesh openings, capable of intercepting debris such as branches, weeds, and garbage in the water flow, preventing debris from entering the water intake pipe. Figure 2 As shown, a small motor 12 is fixed to the inner wall of the collar 2 by three metal brackets arranged in a triangular pattern. The output end of the motor 12 is connected to a cylindrical rotating shaft 11. A cutting blade 10 is fixed to the end of the rotating shaft 11. The cutting blade 10 is a flat rectangle and fits against the outer surface of the barrier net 3.

[0020] Several limiting mechanisms 1 are evenly distributed on the surface of the collar 2, which are used to fix the device at the water intake.

[0021] like Figure 3As shown, the limiting mechanism 1 includes a cylindrical rotating sleeve 7 with one open end. A threaded rod-shaped lead screw 5 is arranged axially inside the rotating sleeve 7. The end of the lead screw 5 is fixed to the closed surface of the rotating sleeve 7. An internally threaded slider 6 is fitted onto the surface of the lead screw 5. The center of the internally threaded slider 6 has an internal thread that matches the thread of the lead screw 5. The internally threaded slider 6 is parallel to the closed surface of the rotating sleeve 7. A hexagonal slide bar 8 is fixed to the end face of the internally threaded slider 6 facing the opening of the rotating sleeve 7. The hexagonal slide bar 8 is a hexagonal prism with good anti-torsional performance. An anti-slip top block 9 is fixed to the end away from the internally threaded slider 6. The anti-slip top block 9 is arc-shaped and can tightly fit the outer wall of the water inlet.

[0022] like Figure 4 As shown, the surface of the collar 2 has a through hole 13 with the same cross-sectional shape as the hexagonal slide bar 8. The hexagonal slide bar 8 passes through the through hole 13, so that the anti-slip top block 9 is located inside the collar 2. The through hole 13 is used to limit the hexagonal slide bar 8 and prevent it from rotating radially.

[0023] When it is necessary to fix the device to the water intake, the operator rotates the cylindrical rotating sleeve 7. The rotation of the rotating sleeve 7 drives the lead screw 5 to rotate synchronously. The rotational motion of the lead screw 5 is converted into the axial linear motion of the internal thread slider 6 through thread engagement. The axial movement of the internal thread slider 6 drives the hexagonal slide rod 8 to slide synchronously within the through hole 13. As the hexagonal slide rod 8 slides, the anti-slip top block 9 gradually approaches and fits against the outer wall of the water intake, ultimately achieving a stable fixation of the collar at the water intake.

[0024] When a large amount of debris accumulates on the surface of the barrier net, motor 12 is started, and the rotating shaft 11 rotates under the drive of motor 12. The cutting blade 10 fixed to the end surface of the rotating shaft 11 rotates synchronously, and the rotating cutting blade 10 cuts the aquatic plants, tangled objects and other debris on the surface of the barrier net. The small pieces of debris produced by cutting are carried away by the water flow, thereby restoring the permeability of the barrier net and ensuring the normal flow of water through the water intake.

[0025] Example 2 The reservoir intake protection device provided in this embodiment, such as Figure 1 As shown, it includes a circular collar 2, with a barrier net 3 fixed to one circular end face of the collar 2. The barrier net 3 is a circular metal mesh with fine and uniform mesh openings, capable of intercepting debris such as branches, weeds, and garbage in the water flow, preventing debris from entering the water intake pipe. Figure 2 As shown, a small motor 12 is fixed to the inner wall of the collar 2 by three metal brackets arranged in a triangular pattern. The output end of the motor 12 is connected to a cylindrical rotating shaft 11. A cutting blade 10 is fixed to the end of the rotating shaft 11. The cutting blade 10 is a flat rectangle and fits against the outer surface of the barrier net 3.

[0026] Several limiting mechanisms 1 are evenly distributed on the surface of the collar 2, which are used to fix the device at the water intake.

[0027] like Figure 3 As shown, the limiting mechanism 1 includes a cylindrical rotating sleeve 7 with one open end. A threaded rod-shaped lead screw 5 is arranged axially inside the rotating sleeve 7. The end of the lead screw 5 is fixed to the closed surface of the rotating sleeve 7. An internally threaded slider 6 is fitted onto the surface of the lead screw 5. The center of the internally threaded slider 6 has an internal thread that matches the thread of the lead screw 5. The internally threaded slider 6 is parallel to the closed surface of the rotating sleeve 7. A hexagonal slide bar 8 is fixed to the end face of the internally threaded slider 6 facing the opening of the rotating sleeve 7. The hexagonal slide bar 8 is a hexagonal prism with good anti-torsional performance. An anti-slip top block 9 is fixed to the end away from the internally threaded slider 6. The anti-slip top block 9 is arc-shaped and can tightly fit the outer wall of the water inlet.

[0028] like Figure 4 As shown, the surface of the collar 2 has a through hole 13 with the same cross-sectional shape as the hexagonal slide bar 8. The hexagonal slide bar 8 passes through the through hole 13, so that the anti-slip top block 9 is located inside the collar 2. The through hole 13 is used to limit the hexagonal slide bar 8 and prevent it from rotating radially.

[0029] A spring 4 is fitted onto the surface of the lead screw 5. One end of the spring 4 is fixed to the inner wall of the closed end of the rotating sleeve 7, and the other end abuts against the internal threaded slider 6. The spring 4 presses against the internal threaded slider 6 inside the rotating sleeve 7 to prevent vibration from causing the internal threaded slider 6 to rotate and loosen. The spring 4 is made of high-strength spring steel and has good elasticity and toughness. During the operation of the device, it can continuously apply axial thrust to the threaded slider 6, effectively reducing the rotation of the internal threaded slider 6 caused by water flow vibration, preventing the limiting mechanism 1 from loosening, and thus making the fixing of the collar 2 at the water intake more stable and reliable.

[0030] Example 3 The reservoir intake protection device provided in this embodiment, such as Figure 1 As shown, it includes a circular collar 2, with a barrier net 3 fixed to one circular end face of the collar 2. The barrier net 3 is a circular metal mesh with fine and uniform mesh openings, capable of intercepting debris such as branches, weeds, and garbage in the water flow, preventing debris from entering the water intake pipe. Figure 2 As shown, a small motor 12 is fixed to the inner wall of the collar 2 by three metal brackets arranged in a triangular pattern. The output end of the motor 12 is connected to a cylindrical rotating shaft 11. A cutting blade 10 is fixed to the end of the rotating shaft 11. The cutting blade 10 is a flat rectangle and fits against the outer surface of the barrier net 3.

[0031] Several limiting mechanisms 1 are evenly distributed on the surface of the collar 2, which are used to fix the device at the water intake.

[0032] like Figure 3As shown, the limiting mechanism 1 includes a cylindrical rotating sleeve 7 with one open end. A threaded rod-shaped lead screw 5 is arranged axially inside the rotating sleeve 7. The end of the lead screw 5 is fixed to the closed surface of the rotating sleeve 7. An internally threaded slider 6 is fitted onto the surface of the lead screw 5. The center of the internally threaded slider 6 has an internal thread that matches the thread of the lead screw 5. The internally threaded slider 6 is parallel to the closed surface of the rotating sleeve 7. A hexagonal slide bar 8 is fixed to the end face of the internally threaded slider 6 facing the opening of the rotating sleeve 7. The hexagonal slide bar 8 is a hexagonal prism with good anti-torsional performance. An anti-slip top block 9 is fixed to the end away from the internally threaded slider 6. The anti-slip top block 9 is arc-shaped and can tightly fit the outer wall of the water inlet.

[0033] like Figure 4 As shown, the surface of the collar 2 has a through hole 13 with the same cross-sectional shape as the hexagonal slide bar 8. The hexagonal slide bar 8 passes through the through hole 13, so that the anti-slip top block 9 is located inside the collar 2. The through hole 13 is used to limit the hexagonal slide bar 8 and prevent it from rotating radially.

[0034] A spring 4 is fitted onto the surface of the lead screw 5. One end of the spring 4 is fixed to the inner wall of the closed end of the rotating sleeve 7, and the other end abuts against the internal threaded slider 6. The spring 4 presses against the internal threaded slider 6 inside the rotating sleeve 7 to prevent vibration from causing the internal threaded slider 6 to rotate and loosen. The spring 4 is made of high-strength spring steel and has good elasticity and toughness. During the operation of the device, it can continuously apply axial thrust to the threaded slider 6, effectively reducing the rotation of the internal threaded slider 6 caused by water flow vibration, preventing the limiting mechanism 1 from loosening, and thus making the fixing of the collar 2 at the water intake more stable and reliable.

[0035] The axes of the lead screw 5, rotating sleeve 7, and hexagonal slide bar 8 are aligned on the same straight line. This coaxial design ensures that when rotating sleeve 7, the lead screw 5 can drive the internal threaded slider 6 to move smoothly axially, and the hexagonal slide bar 8 can also slide smoothly within the through hole 13. This avoids jamming caused by misalignment between components, improves the flexibility and accuracy of the limit mechanism 1 adjustment, and enables the device to adapt to water inlets of different sizes.

[0036] Example 4 The reservoir intake protection device provided in this embodiment, such as Figure 1 As shown, it includes a circular collar 2, with a barrier net 3 fixed to one circular end face of the collar 2. The barrier net 3 is a circular metal mesh with fine and uniform mesh openings, capable of intercepting debris such as branches, weeds, and garbage in the water flow, preventing debris from entering the water intake pipe. Figure 2 As shown, a small motor 12 is fixed to the inner wall of the collar 2 by three metal brackets arranged in a triangular pattern. The output end of the motor 12 is connected to a cylindrical rotating shaft 11. A cutting blade 10 is fixed to the end of the rotating shaft 11. The cutting blade 10 is a flat rectangle and fits against the outer surface of the barrier net 3.

[0037] The cutting blade 10 has its blade direction perpendicular to the surface of the barrier net 3, and the rotating shaft 11 is vertically positioned at the center of the barrier net 3. Three cutting blades 10 are evenly fixed to the surface of the rotating shaft 11, arranged radially. When a large amount of debris accumulates on the barrier net 3, the motor 12 drives the rotating shaft 11 to rotate, and the three cutting blades 10 rotate simultaneously, enabling all-around cutting of debris on the surface of the barrier net 3. The perpendicular blade direction makes cutting more efficient, quickly cutting aquatic plants, tangled debris, and other debris into small pieces, which are easily washed away by the water flow, ensuring the permeability of the barrier net 3.

[0038] Several limiting mechanisms 1 are evenly distributed on the surface of the collar 2, which are used to fix the device at the water intake.

[0039] like Figure 3 As shown, the limiting mechanism 1 includes a cylindrical rotating sleeve 7 with one open end. A threaded rod-shaped lead screw 5 is arranged axially inside the rotating sleeve 7. The end of the lead screw 5 is fixed to the closed surface of the rotating sleeve 7. An internally threaded slider 6 is fitted onto the surface of the lead screw 5. The center of the internally threaded slider 6 has an internal thread that matches the thread of the lead screw 5. The internally threaded slider 6 is parallel to the closed surface of the rotating sleeve 7. A hexagonal slide bar 8 is fixed to the end face of the internally threaded slider 6 facing the opening of the rotating sleeve 7. The hexagonal slide bar 8 is a hexagonal prism with good anti-torsional performance. An anti-slip top block 9 is fixed to the end away from the internally threaded slider 6. The anti-slip top block 9 is arc-shaped and can tightly fit the outer wall of the water inlet.

[0040] like Figure 4 As shown, the surface of the collar 2 has a through hole 13 with the same cross-sectional shape as the hexagonal slide bar 8. The hexagonal slide bar 8 passes through the through hole 13, so that the anti-slip top block 9 is located inside the collar 2. The through hole 13 is used to limit the hexagonal slide bar 8 and prevent it from rotating radially.

[0041] A spring 4 is fitted onto the surface of the lead screw 5. One end of the spring 4 is fixed to the inner wall of the closed end of the rotating sleeve 7, and the other end abuts against the internal threaded slider 6. The spring 4 presses against the internal threaded slider 6 inside the rotating sleeve 7 to prevent vibration from causing the internal threaded slider 6 to rotate and loosen. The spring 4 is made of high-strength spring steel and has good elasticity and toughness. During the operation of the device, it can continuously apply axial thrust to the threaded slider 6, effectively reducing the rotation of the internal threaded slider 6 caused by water flow vibration, preventing the limiting mechanism 1 from loosening, and thus making the fixing of the collar 2 at the water intake more stable and reliable.

[0042] The axes of the lead screw 5, rotating sleeve 7, and hexagonal slide bar 8 are aligned on the same straight line. This coaxial design ensures that when rotating sleeve 7, the lead screw 5 can drive the internal threaded slider 6 to move smoothly axially, and the hexagonal slide bar 8 can also slide smoothly within the through hole 13. This avoids jamming caused by misalignment between components, improves the flexibility and accuracy of the limit mechanism 1 adjustment, and enables the device to adapt to water inlets of different sizes.

[0043] Example 5 The reservoir intake protection device provided in this embodiment, such as Figure 1 As shown, it includes a circular collar 2, with a barrier net 3 fixed to one circular end face of the collar 2. The barrier net 3 is a circular metal mesh with fine and uniform mesh openings, capable of intercepting debris such as branches, weeds, and garbage in the water flow, preventing debris from entering the water intake pipe. Figure 2 As shown, a small motor 12 is fixed to the inner wall of the collar 2 by three metal brackets arranged in a triangular pattern. The output end of the motor 12 is connected to a cylindrical rotating shaft 11. A cutting blade 10 is fixed to the end of the rotating shaft 11. The cutting blade 10 is a flat rectangle and fits against the outer surface of the barrier net 3.

[0044] Several limiting mechanisms 1 are evenly distributed on the surface of the collar 2, which are used to fix the device at the water intake.

[0045] like Figure 3 As shown, the limiting mechanism 1 includes a cylindrical rotating sleeve 7 with one open end. A threaded rod-shaped lead screw 5 is arranged axially inside the rotating sleeve 7. The end of the lead screw 5 is fixed to the closed surface of the rotating sleeve 7. An internally threaded slider 6 is fitted onto the surface of the lead screw 5. The center of the internally threaded slider 6 has an internal thread that matches the thread of the lead screw 5. The internally threaded slider 6 is parallel to the closed surface of the rotating sleeve 7. A hexagonal slide bar 8 is fixed to the end face of the internally threaded slider 6 facing the opening of the rotating sleeve 7. The hexagonal slide bar 8 is a hexagonal prism with good anti-torsional performance. An anti-slip top block 9 is fixed to the end away from the internally threaded slider 6. The anti-slip top block 9 is arc-shaped and can tightly fit the outer wall of the water inlet.

[0046] like Figure 4 As shown, the surface of the collar 2 has a through hole 13 with the same cross-sectional shape as the hexagonal slide rod 8. The hexagonal slide rod 8 passes through the through hole 13, so that the anti-slip top block 9 is located inside the collar 2. The through hole 13 is used to limit the hexagonal slide rod 8 and prevent it from rotating radially. The surface of the anti-slip top block 9 away from the hexagonal slide rod 8 has dense anti-slip textures. The anti-slip textures can increase the friction between the anti-slip top block 9 and the outer wall of the water inlet, and even under the condition of large water flow impact, it can effectively prevent the collar 2 from sliding or displacing at the water inlet, further enhancing the overall fixing effect of the device.

[0047] A spring 4 is fitted onto the surface of the lead screw 5. One end of the spring 4 is fixed to the inner wall of the closed end of the rotating sleeve 7, and the other end abuts against the internal threaded slider 6. The spring 4 presses against the internal threaded slider 6 inside the rotating sleeve 7 to prevent vibration from causing the internal threaded slider 6 to rotate and loosen. The spring 4 is made of high-strength spring steel and has good elasticity and toughness. During the operation of the device, it can continuously apply axial thrust to the threaded slider 6, effectively reducing the rotation of the internal threaded slider 6 caused by water flow vibration, preventing the limiting mechanism 1 from loosening, and thus making the fixing of the collar 2 at the water intake more stable and reliable.

[0048] The axes of the lead screw 5, rotating sleeve 7, and hexagonal slide bar 8 are aligned on the same straight line. This coaxial design ensures that when rotating sleeve 7, the lead screw 5 can drive the internal threaded slider 6 to move smoothly axially, and the hexagonal slide bar 8 can also slide smoothly within the through hole 13. This avoids jamming caused by misalignment between components, improves the flexibility and accuracy of the limit mechanism 1 adjustment, and enables the device to adapt to water inlets of different sizes.

[0049] Example 6 The reservoir intake protection device provided in this embodiment, such as Figure 1 As shown, it includes a circular collar 2, with a barrier net 3 fixed to one circular end face of the collar 2. The barrier net 3 is a circular metal mesh with fine and uniform mesh openings, capable of intercepting debris such as branches, weeds, and garbage in the water flow, preventing debris from entering the water intake pipe. Figure 2 As shown, a small motor 12 is fixed to the inner wall of the collar 2 by three metal brackets arranged in a triangular pattern. The output end of the motor 12 is connected to a cylindrical rotating shaft 11. A cutting blade 10 is fixed to the end of the rotating shaft 11. The cutting blade 10 is a flat rectangle and fits against the outer surface of the barrier net 3.

[0050] Several limiting mechanisms 1 are evenly distributed on the surface of the collar 2, which are used to fix the device at the water intake.

[0051] like Figure 3As shown, the limiting mechanism 1 includes a cylindrical rotating sleeve 7 with one open end. A threaded rod-shaped lead screw 5 is arranged axially inside the rotating sleeve 7. The end of the lead screw 5 is fixed to the closed surface of the rotating sleeve 7. An internally threaded slider 6 is fitted onto the surface of the lead screw 5. The center of the internally threaded slider 6 has an internal thread that matches the thread of the lead screw 5. The internally threaded slider 6 is parallel to the closed surface of the rotating sleeve 7. A hexagonal slide rod 8 is fixed to the end face of the internally threaded slider 6 facing the opening of the rotating sleeve 7. The hexagonal slide rod 8 is a hexagonal prism with good torsional resistance. An anti-slip top block 9 is fixed to the end away from the internally threaded slider 6. The anti-slip top block 9 is arc-shaped and can tightly fit the outer wall of the water inlet. The anti-slip top block 9 is made of natural rubber. Rubber has good elasticity and wear resistance, and can deform to a certain extent when in contact with the inner wall of the water inlet, thereby increasing the contact area and improving friction. Meanwhile, the elasticity of the rubber can buffer the vibration caused by the water flow impact, reduce the hard collision between the device and the water intake, avoid the anti-slip top block 9 from causing wear on the outer wall of the water intake, and extend the service life of the device and the water intake.

[0052] like Figure 4 As shown, the surface of the collar 2 has a through hole 13 with the same cross-sectional shape as the hexagonal slide rod 8. The hexagonal slide rod 8 passes through the through hole 13, so that the anti-slip top block 9 is located inside the collar 2. The through hole 13 is used to limit the hexagonal slide rod 8 and prevent it from rotating radially. The surface of the anti-slip top block 9 away from the hexagonal slide rod 8 has dense anti-slip textures. The anti-slip textures can increase the friction between the anti-slip top block 9 and the outer wall of the water inlet, and even under the condition of large water flow impact, it can effectively prevent the collar 2 from sliding or displacing at the water inlet, further enhancing the overall fixing effect of the device.

[0053] A spring 4 is fitted onto the surface of the lead screw 5. One end of the spring 4 is fixed to the inner wall of the closed end of the rotating sleeve 7, and the other end abuts against the internal threaded slider 6. The spring 4 presses against the internal threaded slider 6 inside the rotating sleeve 7 to prevent vibration from causing the internal threaded slider 6 to rotate and loosen. The spring 4 is made of high-strength spring steel and has good elasticity and toughness. During the operation of the device, it can continuously apply axial thrust to the threaded slider 6, effectively reducing the rotation of the internal threaded slider 6 caused by water flow vibration, preventing the limiting mechanism 1 from loosening, and thus making the fixing of the collar 2 at the water intake more stable and reliable.

[0054] The axes of the lead screw 5, rotating sleeve 7, and hexagonal slide bar 8 are aligned on the same straight line. This coaxial design ensures that when rotating sleeve 7, the lead screw 5 can drive the internal threaded slider 6 to move smoothly axially, and the hexagonal slide bar 8 can also slide smoothly within the through hole 13. This avoids jamming caused by misalignment between components, improves the flexibility and accuracy of the limit mechanism 1 adjustment, and enables the device to adapt to water inlets of different sizes.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reservoir intake protection device, characterized in that, Includes a collar (2), a barrier net (3) is fixed to the circular cross section of the collar (2), a motor (12) is fixed to the inner wall of the collar (2) by a bracket, and a cutting blade (10) is fixed to the output end of the motor (12) by a rotating shaft (11). The cutting blade (10) is attached to the outer surface of the barrier net (3). The collar (2) has several limiting mechanisms (1) evenly arranged on its surface.

2. The reservoir intake protection device according to claim 1, characterized in that, The limiting mechanism (1) includes a rotating sleeve (7) with one end open. A lead screw (5) is fixed along the axial direction of the rotating sleeve (7). An internal thread slider (6) is sleeved on the surface of the lead screw (5). A hexagonal slide bar (8) is fixed on the end face of the internal thread slider (6) facing the opening direction of the rotating sleeve (7). An anti-slip top block (9) is fixed on the end of the hexagonal slide bar (8) away from the internal thread slider (6). The collar (2) has a through hole (13) with the same cross section as the hexagonal slide rod (8) on its surface. The hexagonal slide rod (8) passes through the through hole (13), and the anti-slip top block (9) is located inside the collar (2).

3. The reservoir intake protection device according to claim 2, characterized in that, A spring (4) is fitted on the surface of the lead screw (5). One end of the spring (4) is fixed to the rotating sleeve (7), and the other end abuts against the internal thread slider (6).

4. The reservoir intake protection device according to claim 2, characterized in that, The lead screw (5), rotating sleeve (7) and hexagonal slide bar (8) have the same axis.

5. The reservoir intake protection device according to claim 2, characterized in that, The cutting blade (10) is perpendicular to the surface of the barrier mesh (3).

6. The reservoir intake protection device according to claim 2, characterized in that, The rotating shaft (11) is set perpendicular to the center of the barrier net (3), and there are multiple cutting blades (10) that are evenly fixed on the surface of the rotating shaft (11).

7. The reservoir intake protection device according to claim 2, characterized in that, The anti-slip top block (9) has anti-slip texture on the surface of the end away from the hexagonal slide bar (8).

8. The reservoir intake protection device according to claim 2, characterized in that, The anti-slip top block (9) is made of rubber.

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