Trash rack grid for water conservancy channel
The water conservancy channel trash rack, which combines lifting and scraping components, solves the problems of easy clogging and difficult cleaning of traditional trash racks, and achieves efficient trash blocking and cleaning functions, thereby improving the operational reliability and equipment maintenance convenience of the water conservancy channel.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU HUAYU WATER RES & HYDPOWR ENG SURV & DESIGN CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional water conservancy channels often suffer from debris accumulation and blockages due to prolonged use of trash racks, which hinders the normal flow of water and increases the difficulty of cleaning.
Design a debris barrier for water conservancy channels, which combines a lifting assembly and a scraper assembly. Solid-liquid separation is achieved through the drainage holes of the lifting plate, the scraper removes debris, and the pusher pushes the debris out of the channel using the buffer reset mechanism of the protective outer cylinder and the guide column to prevent secondary sedimentation.
It achieves continuous flow efficiency improvement, reduces equipment failure rate and cleaning frequency, extends equipment service life, and simplifies the cleaning process.
Smart Images
Figure CN224227743U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water conservancy channel pollution control technology, specifically a pollution control grid for water conservancy channels. Background Technology
[0002] The core purpose of installing trash racks in water conservancy channels is to intercept floating, suspended, and impurities in the water flow, thereby ensuring the normal operation of the channel, protecting downstream facilities, and maintaining the aquatic ecosystem. Accumulation of debris in the channel reduces the flow cross-section, decreases water conveyance capacity, and can even lead to the risk of overflow. Trash racks, by centrally intercepting debris, facilitate regular cleaning, maintain the channel's design flow rate. Furthermore, if debris (such as branches, plastic waste, and aquatic plants) enters the turbine, it can entangle the runner and clog the guide vanes, leading to mechanical wear, reduced efficiency, and even shutdown. Trash racks can proactively intercept these debris, reducing equipment failure rates.
[0003] Traditional water conservancy channels use debris barriers that are lowered into the channel. Water flows through the barriers, which trap debris. However, over time, debris accumulates at the barriers, causing blockages and hindering water flow. To address this, some debris barriers in water conservancy channels are equipped with a lifting structure and a scraping mechanism. The lifting end of the lifting structure has a lifting plate. When the lifting plate rises with the structure, it lifts the debris trapped by the barriers, and the scraping mechanism removes the debris from the lifting plate, preventing blockages and ensuring normal water flow. However, this method has drawbacks. When the lifting plate returns to its original position, it pulls some undamaged debris underwater, reducing the cleaning efficiency and increasing the difficulty of debris removal. Therefore, a new type of debris barrier for water conservancy channels is proposed. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] In view of the shortcomings of the existing technology, this utility model provides a debris barrier for water conservancy channels to solve the above-mentioned technical problems that not only lead to a decrease in the cleaning effect, but also increase the difficulty of cleaning debris.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a trash rack for water conservancy channels, comprising:
[0008] A grid plate, and a lifting assembly disposed on the front of the grid plate, wherein a scraping assembly is installed on the upper surface of the grid plate, and a scraping plate is added to the moving end of the scraping assembly and connected to a lifting plate;
[0009] A lifting plate is set on the back of the grid plate, and the upper surface of the lifting plate is evenly provided with drainage holes. The lifting plate is connected to the lifting end of the lifting component.
[0010] The protective outer cylinder is located on both sides of the lower back of the grid plate. The inner cavity of the protective outer cylinder is equipped with guide columns, and guide blocks and reset springs are respectively sleeved on the surface of the guide columns. The upper and lower surfaces of the protective outer cylinder are provided with external through grooves. A support rod is slidably attached to the upper surface of the protective outer cylinder and is connected to the guide block. A pusher plate is installed at the top of the support rod and is slidably attached to the lower surface of the lifting plate. When water flows through the grating, floating objects and solid debris are intercepted on the front of the grating. At this time, the lifting assembly is activated, driving the lifting plate to rise vertically along the back of the grating. During the ascent, the evenly distributed drainage holes on its surface continuously discharge water carrying debris, achieving solid-liquid separation. While the lifting assembly drives the lifting plate to rise, it also drives the scraping assembly through a mechanical linkage structure. The moving end of the scraping assembly drives the scraper to move horizontally along the surface of the grating, scraping the debris attached to the front of the grating to the collection area on both sides of the channel. When the lifting assembly drives the lifting plate to descend and reset, the lower surface of the lifting plate contacts the pusher plate and applies pressure. The pusher plate pushes the guide block to slide outward along the guide column inside the protective outer cylinder through the support rod, simultaneously compressing the reset spring. During this process, the pusher plate pushes the debris accumulated on the back of the lifting plate outward to prevent the debris from being deposited again on the back of the grid plate. When the lifting plate is fully reset, the reset spring releases its elastic potential energy to push the guide block to move in the opposite direction, which in turn drives the support rod and the pusher plate to return to their initial positions. The external groove opened on the surface of the protective outer cylinder ensures that the support rod slides smoothly while blocking debris in the channel from entering the mechanism, providing a reliable guarantee for the next working cycle.
[0011] Preferably, the two ends of the return spring are connected to the surface of the guide block and the inner wall of the protective outer cylinder, respectively. When the lifting plate is driven to descend by the lifting assembly, its lower surface presses against the pusher plate. The pusher plate pushes the guide block to slide outward along the guide column through the support rod. During this process, the return spring is compressed and stores elastic potential energy. When the lifting plate rises, the return spring releases its potential energy, pushes the guide block to move in the opposite direction, and drives the pusher plate to return to its initial position, forming a reciprocating buffer reset cycle.
[0012] Preferably, the lifting assembly includes a threaded screw, which is rotatably connected to the grid plate. A sliding block is sleeved on the surface of the threaded screw and connected to the lifting plate. When the first drive motor drives the threaded screw to rotate, the sliding block sleeved on the surface of the threaded screw converts the rotational motion into linear motion, driving the lifting plate, which is fixed to the sliding block, to rise and fall vertically along the back of the grid plate. This achieves linkage control between the lifting plate and the scraping assembly. The transmission mechanism of the threaded screw has a self-locking characteristic, which can accurately control the stopping position of the lifting plate and prevent unexpected displacement caused by water flow impact. At the same time, the linear transmission structure simplifies the complexity of the equipment and improves the smoothness of the movement.
[0013] Preferably, a first drive motor is coaxially connected to the top of the threaded screw, and the first drive motor is connected to the grid plate via a motor mount. The first drive motor is fixed to the top of the grid plate via the motor mount, and its output shaft is coaxially connected to the threaded screw, directly transmitting the motor torque to the threaded screw to realize the electric adjustment of the lifting speed and stroke of the lifting plate.
[0014] Preferably, the scraping assembly includes a threaded post, which is rotatably connected to the grid plate, and a sliding plate is sleeved on the surface of the threaded screw, and the sliding plate is connected to the scraper plate. When the second drive motor drives the threaded post to rotate, the sliding plate sleeved on the surface of the threaded post converts the rotational motion into horizontal linear motion, driving the scraper plate fixed to the sliding plate to reciprocate along the surface of the grid plate, thereby completing the scraping operation of debris on the front of the grid plate.
[0015] Preferably, a second drive motor is coaxially connected to the end of the threaded column, and the second drive motor is connected to the grid plate via a motor mount. The second drive motor is fixed to the side of the grid plate via the motor mount, and its output shaft is coaxially connected to the threaded column, directly transmitting the motor torque to the threaded column to achieve precise control of the horizontal movement speed and range of the scraper.
[0016] (III) Beneficial Effects
[0017] Compared with the prior art, this utility model provides a debris-blocking grid for water conservancy channels, which has the following beneficial effects:
[0018] This water conservancy channel uses a debris-blocking grid. The buffer and reset mechanism, consisting of a protective outer cylinder and guide columns, ensures that the pusher plate maintains elastic contact with the lower surface of the lifting plate through the linkage of the guide block and support rod. When the lifting plate descends, the pusher plate moves outward along the guide column through the guide block and support rod, squeezing the reset spring and pushing the accumulated debris outward to the outside of the lifting plate, preventing secondary deposition of debris on the back of the grid. At the same time, the buffer mechanism can absorb the impact of the lifting plate's movement, extending the service life of the equipment. The bidirectional through-groove structure on the surface of the protective outer cylinder ensures smooth sliding of the support rod and prevents debris in the channel from entering the mechanism and causing jamming, improving the overall operational reliability. This design achieves integrated functions of debris blocking, cleaning, and slag discharge through mechanical linkage, significantly improving the continuous flow efficiency of the water conservancy channel and the convenience of equipment maintenance. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the overall left rear side view of the present invention;
[0021] Figure 3 This is a schematic diagram of the lifting component structure of this utility model;
[0022] Figure 4 This is a schematic diagram of the scraping assembly structure of this utility model;
[0023] Figure 5 This is a schematic diagram of the pusher plate and its connection structure of the present invention;
[0024] Figure 6 This is a cross-sectional view of the internal structure of the protective outer cylinder of this utility model.
[0025] In the diagram: 1. Grid plate; 2. Lifting assembly; 3. Scraper assembly; 4. Scraper blade; 5. Lifting plate; 6. Drain hole; 7. Protective outer cylinder; 8. Guide column; 9. Guide block; 10. Return spring; 11. Outer channel; 12. Support rod; 13. Push plate; 14. Threaded screw; 15. First drive motor; 16. Sliding block; 17. Threaded column; 18. Second drive motor; 19. Sliding plate. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] This utility model provides a technical solution: a debris barrier for water conservancy channels, comprising: (see details) Figure 1 , Figure 2 , Figure 5 and Figure 6 The grid plate 1 and the lifting assembly 2 are disposed on the front of the grid plate 1. The upper surface of the grid plate 1 is equipped with a scraper assembly 3, and a scraper plate 4 is added to the moving end of the scraper assembly 3 and connected to a lifting plate 5.
[0028] A lifting plate 5 is disposed on the back of the grid plate 1, and the upper surface of the lifting plate 5 is evenly provided with drainage holes 6. The lifting plate 5 is connected to the lifting end of the lifting assembly 2. The upper surface of the lifting plate 5 is evenly provided with drainage holes 6. The lifting plate 5 is connected to the lifting end of the lifting assembly 2.
[0029] The protective outer cylinder 7 is located on both sides of the lower back of the grid plate 1. The inner cavity of the protective outer cylinder 7 is equipped with guide posts 8, and guide blocks 9 and reset springs 10 are respectively sleeved on the surface of the guide posts 8. The upper and lower surfaces of the protective outer cylinder 7 are provided with external through grooves 11. A support rod 12 is slidably attached to the upper surface of the protective outer cylinder 7 and is connected to the guide block 9. A pusher plate 13 is installed at the top of the support rod 12 and is slidably attached to the lower surface of the lifting plate 5. When water flows through the grid plate 1, floating objects and solid debris are intercepted on the front of the grid plate 1. At this time, the lifting assembly 2 is activated, driving the lifting plate 5 to rise vertically along the back of the grid plate 1. During the rise of the lifting plate 5, the drainage holes 6 evenly distributed on its surface continuously discharge the water carrying debris, achieving solid-liquid separation. While the lifting assembly 2 drives the lifting plate 5 to rise, it drives the scraping assembly 3 to operate through the mechanical linkage structure. The moving end of the scraping assembly 3 drives the scraping plate 4 to move horizontally along the surface of the grid plate 1, scraping the debris attached to the front of the grid plate 1 to the collection area on both sides of the channel. When the lifting assembly 2 drives the lifting plate 5 to descend and reset, the lower surface of the lifting plate 5 contacts the pusher plate 13 and applies pressure. The pusher plate 13 pushes the guide block 9 to slide outward along the guide column 8 inside the protective outer cylinder 7 through the support rod 12, and simultaneously compresses the reset spring 10. During this process, the pusher plate 13 pushes the debris accumulated on the back of the lifting plate 5 outward to prevent the debris from being deposited again on the back of the grid plate 1. After the lifting plate 5 is fully reset, the reset spring 10 releases its elastic potential energy to push the guide block 9 to move in the opposite direction, which in turn drives the support rod 12 and the pusher plate 13 to return to their initial positions. The external groove 11 on the surface of the protective outer cylinder 7 ensures that the support rod 12 slides smoothly while blocking debris in the channel from entering the mechanism, providing a reliable guarantee for the next working cycle. The elastic contact design between the pusher plate 13 and the lifting plate 5 means that the debris pushing process does not require an additional power source. The self-cleaning function can be achieved simply by the reciprocating motion of the lifting component 2, which greatly reduces the frequency of manual dredging. The protective outer cylinder 7 provides a wrap-around protection for the reset spring 10 and the guide column 8, further reducing the impact of water corrosion and improving the environmental adaptability of the equipment.
[0030] Please see Figure 6 The two ends of the return spring 10 are connected to the surface of the guide block 9 and the inner wall of the protective outer cylinder 7, respectively. When the lifting plate 5 is driven down by the lifting assembly 2, its lower surface presses against the pusher plate 13. The pusher plate 13 pushes the guide block 9 to slide outward along the guide column 8 through the support rod 12. During this process, the return spring 10 is compressed and stores elastic potential energy. When the lifting plate 5 rises, the return spring 10 releases its potential energy, pushes the guide block 9 to move in the opposite direction, and drives the pusher plate 13 to return to its initial position, forming a reciprocating buffer reset cycle. Through the rigid connection design at both ends of the spring, it is ensured that the pusher plate 13 always maintains elastic contact with the lifting plate 5, avoiding structural damage caused by rigid impact. At the same time, the energy storage characteristics of the spring are used to achieve powerless reset, reducing energy consumption and extending the service life of the buffer mechanism.
[0031] Please see Figure 3 The lifting assembly 2 includes a threaded screw 14, which is rotatably connected to the grid plate 1. A sliding block 16 is sleeved on the surface of the threaded screw 14 and connected to the lifting plate 5. When the first drive motor 15 drives the threaded screw 14 to rotate, the sliding block 16 on the surface of the threaded screw 14 converts the rotational motion into linear motion, driving the lifting plate 5, which is fixed to the sliding block 16, to rise and fall vertically along the back of the grid plate 1. This achieves linkage control between the lifting plate 5 and the scraping assembly 3. The transmission mechanism of the threaded screw 14 has a self-locking characteristic, which can accurately control the stopping position of the lifting plate 5 and prevent unexpected displacement caused by water flow impact. At the same time, the linear transmission structure simplifies the complexity of the equipment and improves the smoothness of the movement. The top end of the threaded screw 14 is coaxially connected to the first drive motor 15, and the first drive motor 15 is connected to the grid plate 1 through a motor mount. The first drive motor 15 is fixed to the top of the grid plate 1 by a motor mount. Its output shaft is coaxially connected to the threaded screw 14, which directly transmits the motor torque to the threaded screw 14, thereby realizing the electric adjustment of the lifting speed and stroke of the lifting plate 5.
[0032] Please see Figure 4 The scraper assembly 3 includes a threaded post 17, which is rotatably connected to the grid plate 1. A sliding plate 19 is sleeved on the surface of the threaded screw 14 and connected to the scraper plate 4. When the second drive motor 18 drives the threaded post 17 to rotate, the sliding plate 19 sleeved on the surface of the threaded post 17 converts the rotational motion into horizontal linear motion, driving the scraper plate 4, which is fixed to the sliding plate 19, to reciprocate along the surface of the grid plate 1, completing the scraping operation of debris on the front of the grid plate 1. The end of the threaded post 17 is coaxially connected to the second drive motor 18, which is connected to the grid plate 1 through a motor mount. The second drive motor 18 is fixed to the side of the grid plate 1 through the motor mount, and its output shaft is coaxially connected to the threaded post 17, directly transmitting the motor torque to the threaded post 17, thereby achieving precise control of the horizontal movement speed and range of the scraper plate 4.
[0033] In this scheme: when water flows through the grid plate 1, floating objects and solid debris are intercepted on the back of the grid plate 1. At this time, the first drive motor 15 starts and drives the threaded screw 14 to rotate. The sliding block 16 sleeved on the surface of the threaded screw 14 converts the rotational motion into linear motion, driving the lifting plate 5 to rise vertically along the back of the grid plate 1. During the rising process of the lifting plate 5, the drainage holes 6 evenly distributed on its surface continuously discharge the water carrying debris, realizing solid-liquid separation.
[0034] While the threaded screw 14 rotates, the second drive motor 18 is triggered to run through the mechanical linkage structure. The second drive motor 18 drives the threaded column 17 to rotate. The sliding plate 19 sleeved on the surface of the threaded column 17 converts the rotational motion into horizontal linear motion, which drives the scraper 4 to move horizontally along the surface of the grid plate 1, scraping the debris attached to the front of the grid plate 1 to the collection area on both sides of the channel.
[0035] When the first drive motor 15 rotates in the opposite direction to drive the lifting plate 5 to descend and reset, the lower surface of the lifting plate 5 presses against the pusher plate 13. The pusher plate 13 pushes the guide block 9 to slide outward along the guide column 8 inside the protective outer cylinder 7 through the support rod 12, and simultaneously compresses the reset spring 10. During this process, the pusher plate 13 pushes the debris accumulated on the back of the lifting plate 5 outward to prevent the debris from being deposited again on the back of the grid plate 1.
[0036] When the lifting plate 5 is fully reset, the reset spring 10 releases its elastic potential energy to push the guide block 9 to move in the opposite direction, which in turn drives the support rod 12 and the pusher plate 13 to return to their initial positions. The external groove 11 opened on the surface of the protective outer cylinder 7 ensures that the support rod 12 slides smoothly while blocking debris in the channel from entering the mechanism and avoiding jamming.
[0037] The elastic contact design between the pusher plate 13 and the lifting plate 5 eliminates the need for an additional power source during the debris ejection process. The self-cleaning function can be achieved solely through the reciprocating motion of the lifting assembly 2. The protective outer cylinder 7 provides a wrapping protection for the reset spring 10 and the guide column 8, reducing the impact of water corrosion, ensuring long-term stable operation of the equipment, and providing reliable conditions for the next working cycle.
[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0039] 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 type of debris-blocking grid for irrigation canals, characterized in that, include: A grid plate (1), and a lifting assembly (2) disposed on the front of the grid plate (1), and a scraper assembly (3) is installed on the upper surface of the grid plate (1), and a scraper plate (4) is added to the moving end of the scraper assembly (3), and a lifting plate (5) is connected thereto. A lifting plate (5) is set on the back of the grid plate (1), and the upper surface of the lifting plate (5) is evenly provided with drainage holes (6), and the lifting plate (5) is connected to the lifting end of the lifting assembly (2). The upper surface of the lifting plate (5) is evenly provided with drainage holes (6), and the lifting plate (5) is connected to the lifting end of the lifting assembly (2). The protective outer cylinder (7) is located on both sides of the lower back of the grid plate (1). The inner cavity of the protective outer cylinder (7) is equipped with guide posts (8), and guide blocks (9) and reset springs (10) are respectively sleeved on the surface of the guide posts (8). The upper and lower surfaces of the protective outer cylinder (7) are provided with external through grooves (11). A support rod (12) is slidably attached to the upper surface of the protective outer cylinder (7). The support rod (12) is connected to the guide block (9). A pusher plate (13) is installed at the top of the support rod (12). The pusher plate (13) is slidably attached to the lower surface of the lifting plate (5).
2. The trash rack for water conservancy channels according to claim 1, characterized in that: The two ends of the return spring (10) are respectively connected to the surface of the guide block (9) and the inner wall of the protective outer cylinder (7).
3. A trash rack for water conservancy channels according to claim 1, characterized in that: The lifting assembly (2) includes a threaded screw (14), which is rotatably connected to the grid plate (1), and a sliding block (16) is sleeved on the surface of the threaded screw (14), which is connected to the lifting plate (5).
4. A trash rack for water conservancy channels according to claim 3, characterized in that: The top end of the threaded screw (14) is coaxially connected to a first drive motor (15), and the first drive motor (15) is connected to the grid plate (1) through a motor mount.
5. A trash rack for water conservancy channels according to claim 1, characterized in that: The scraper assembly (3) includes a threaded post (17), which is rotatably connected to the grid plate (1), and a sliding plate (19) is sleeved on the surface of the threaded screw (14), which is connected to the scraper plate (4).
6. A trash rack for water conservancy channels according to claim 5, characterized in that: The end of the threaded column (17) is coaxially connected to a second drive motor (18), and the second drive motor (18) is connected to the grid plate (1) through a motor base.