Hydraulic structure for blocking sand in river channel

Abstract

The utility model provides a hydraulic structure for riverway sand blocking. The hydraulic structure comprises a sand blocking step located in a riverway, a splitter plate arranged in the riverway, a sand basin arranged on one side of the riverway, a fixing plate arranged at the upper end of the sand basin, and an open hole formed in the fixing plate and used for a lifting cylinder to penetrate through. A rotating rod is arranged in the lifting cylinder, a spiral blade is arranged on the outer side of the rotating rod, and a lifting tank is arranged at the upper end of the lifting cylinder; a top plate is erected above the fixing plate through a vertical rod, and a motor used for driving the rotating rod to rotate is arranged above the top plate. According to the utility model, through the arrangement of the inclined steps in the sand blocking steps, silt in a river channel can be blocked, and meanwhile, the silt is flushed into the sedimentation tank by utilizing the impact force of water flow, and through the arrangement of the lifting cylinder and the rotating spiral blade in the sedimentation tank, the accumulated silt can be lifted to the silt discharging pipe to be discharged; and secondary deposition of silt in the river channel is effectively avoided, the desilting efficiency is improved, and the good state of the river channel is maintained.

Description

Technical Field

[0001] This utility model belongs to the field of river sediment retention technology, and in particular relates to a hydraulic structure for river sediment retention. Background Technology

[0002] The continuous accumulation of silt in river channels reduces the cross-sectional area of ​​the water passage, thus decreasing its flow capacity. During flood season, the floodwaters that would normally flow smoothly cannot be discharged in time due to the narrowing and shallowing of the river channel, causing the water level to rise rapidly and easily leading to flooding disasters such as levee overflows and breaches. By intercepting silt, the amount of silt accumulated in the downstream river channel can be effectively reduced, maintaining a reasonable flood discharge cross-section, ensuring the safe passage of floodwaters, reducing the risk of flooding disasters, protecting the lives and property of residents along the river, and safeguarding the infrastructure of surrounding towns, farmland, and other areas from flood damage.

[0003] Existing methods for river silt retention mainly include gravity silt dams, arch silt dams, and earth-rock silt dams. However, regardless of the method, they can only block silt and cannot directly remove it. When silt accumulates to a certain level, the silt dam will lose its silt retention function. Therefore, manual dredging is required regularly, which is time-consuming and labor-intensive. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a hydraulic structure for river silt interception, which can collect silt in the river and automatically lift the silt to the outside of the river under the action of the lifting cylinder, thereby achieving efficient dredging.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A hydraulic structure for river sediment interception includes sediment interception steps located inside the river channel, a diversion plate located in front of the sediment interception steps inside the river channel, a sedimentation tank located on one side of the river channel, a fixing plate located at the upper end of the sedimentation tank, and an opening in the fixing plate for a lifting cylinder to pass through.

[0007] Inside the lifting cylinder is a rotating rod, and on the outside of the rotating rod are spiral blades. At the upper end of the lifting cylinder is a lifting tank, and on one side of the lifting tank is a sand discharge pipe. At the top of the lifting tank is a cover plate. Above the fixed plate is a top plate supported by uprights, and above the top plate is a motor for driving the rotating rod to rotate.

[0008] Furthermore, the diameter of the lifting tank is slightly larger than that of the lifting cylinder, which ensures that the sediment can enter the lifting tank smoothly and be discharged to the outside of the river through the sand discharge pipe set on the side of the lifting tank.

[0009] Furthermore, the lower end of the lifting cylinder is located at the bottom of the sedimentation tank, and an opening is provided at the lower end of the lifting cylinder. The sediment can enter the lifting cylinder through the opening and be gradually lifted by the rotation of the subsequent spiral blades. Furthermore, in order to facilitate the sediment to gather towards the lower end of the lifting cylinder, the bottom of the sedimentation tank is designed with an arc-shaped structure.

[0010] Furthermore, a mounting bracket is provided on the outer side of the lifting cylinder, which is used to fix the lifting cylinder by connecting the mounting bracket to the fixing plate.

[0011] Furthermore, the diversion plate adopts a right-angled triangular structure, which can divide the river channel into three parts and seven parts. Three parts of the water flow through one side of the right-angled side of the diversion plate, while the remaining seven parts of the water flow towards the front end of the step in the sand-trapping staircase under the guidance of the hypotenuse of the diversion plate.

[0012] Furthermore, the sand-trapping staircase consists of multiple steps arranged sequentially, and each step is inclined.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This utility model, through the setting of inclined steps in the sand-blocking ladder, can intercept silt in the river channel and use the impact force of the water flow to flush the silt into the sedimentation tank. By setting a lifting cylinder and rotating spiral blades in the sedimentation tank, the accumulated silt can be lifted to the sand discharge pipe for discharge, effectively avoiding secondary siltation in the river channel and improving dredging efficiency.

[0015] The diversion plate of this utility model can rationally distribute the river flow. Seven-tenths of the water flow is guided through the inclined side to the front end of the sediment trapping step. With the help of the inclined steps, the sediment collection efficiency can be enhanced, allowing the sediment to flow more smoothly into the sedimentation basin and maintaining the good condition of the river. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the sand-trapping staircase of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the sedimentation tank of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the lifting cylinder of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the lifting tank of this utility model.

[0021] In the picture:

[0022] 1-River channel, 2-Sediment trapping steps, 3-Diversion plate, 4-Sedimentation basin, 5-Fixing plate, 6-Upright pole, 7-Top plate, 8-Lifting cylinder, 81-Mounting frame, 82-Helical blade, 83-Rotating rod, 84-Lifting tank, 85-Cover plate, 86-Sediment discharge pipe, 9-Motor. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0024] As attached Figures 1-5 As shown.

[0025] A hydraulic structure for river silt retention includes a silt-retention staircase 2 located inside the river channel 1. The silt-retention staircase 2 consists of multiple steps arranged in sequence, and each step is inclined. A sedimentation basin 4 is provided at the end of the steps in the silt-retention staircase 2 and on one side of the river channel 1.

[0026] Based on the above structure and in conjunction with the appendix Figure 1 , 2 As shown, the sand-blocking step 2 can block the silt in the river channel, and due to the inclined steps in the sand-blocking step 2, the water flow can flush the silt into the sedimentation tank 4 along the steps, effectively reducing the accumulation of silt in the river channel 1.

[0027] Furthermore, a right-angled triangular diversion plate 3 is installed within the river channel 1, as shown in the attached diagram. Figure 1 As shown, the diversion plate 3 can divide the water flow of the river 1 into two parts. One-third of the water flows through one side of the right-angled side of the diversion plate 3, while the remaining seven-thirds of the water will flow to the front end of the steps in the sand-trapping staircase 2 under the guidance of the inclined side of the diversion plate 3. Due to the inclined steps in the sand-trapping staircase 2, these seven-thirds of the water can more effectively flush the silt intercepted in the sand-trapping staircase 2 into the sedimentation tank 4, which can significantly improve the efficiency of cleaning up the silt in the river channel.

[0028] A fixing plate 5 is provided at the upper end of the sedimentation tank 4. An opening is provided in the fixing plate 5 for the lifting cylinder 8 to pass through, and an mounting bracket 81 is provided on the outside of the lifting cylinder 8. The lifting cylinder 8 can be fixed by connecting the mounting bracket 81 with the fixing plate 5.

[0029] The lower end of the lifting cylinder 8 is located at the bottom of the sedimentation tank 4. A rotating rod 83 is installed inside the lifting cylinder 8, and a spiral blade 82 is installed on the outside of the rotating rod 83. An opening is provided at the lower end of the lifting cylinder 8, as detailed in the attached figure. Figure 3 ,4 As shown, when the rotating rod 83 drives the spiral blade 82 to rotate, the mud and sand are stirred into the lifting cylinder 8, and through the rotation of the spiral blade 82, the mud and sand are gradually lifted to the upper end of the lifting cylinder 8.

[0030] Furthermore, an elevator tank 84 is provided at the upper end of the elevator cylinder 8. The diameter of the elevator tank 84 is slightly larger than that of the elevator cylinder 8, which can ensure that the sediment can enter the elevator tank 84 smoothly and be discharged to the outside of the river channel through the sand discharge pipe 86 provided on the side of the elevator tank 84.

[0031] A cover plate 85 is provided on the top of the lifting tank 84. The cover plate 85 can prevent mud and sand from overflowing from the top of the lifting tank 84 and ensure that all mud and sand can be discharged from the sand discharge pipe 86.

[0032] Furthermore, a top plate 7 is mounted above the fixed plate 5 via a pole 6, and a motor 9 for driving the rotating rod 83 to rotate is mounted above the top plate 7.

[0033] The working principle of this utility model is as follows: During daily use, the silt in the river channel 1 will be gradually intercepted by multiple steps in the silt-blocking ladder 2, and under the impact of the water flow, this silt will enter the sedimentation tank 4.

[0034] When it is necessary to clean the sediment in the sedimentation tank 4, simply start the motor 9 to drive the rotating rod 83 to rotate, and the spiral blades 82 can stir the sediment into the lifting cylinder 8 and gradually lift it to the discharge pipe 86 for discharge.

[0035] The height of the lifting cylinder 8 is 0.5-1 meter above the riverbank surface. Before starting the motor 9, the trolley can be pushed under the sand discharge pipe 86 to directly receive the discharged silt.

[0036] Furthermore, during daily use, the accumulation of mud and sand can be checked through the openings in the fixing plate 5.

[0037] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A hydraulic structure for riverbed sediment retention, comprising sediment retention steps (2) located within the riverbed (1), characterized in that: A diversion plate (3) is provided in front of the sand-blocking step (2) in the river channel (1), a sedimentation tank (4) is provided on one side of the river channel (1), a fixing plate (5) is provided at the upper end of the sedimentation tank (4), and an opening for the lifting cylinder (8) to pass through is provided in the fixing plate (5). Inside the lifting cylinder (8), there is a rotating rod (83), and on the outside of the rotating rod (83), there is a spiral blade (82). At the upper end of the lifting cylinder (8), there is a lifting tank (84). On one side of the lifting tank (84), there is a sand discharge pipe (86). On the top of the lifting tank (84), there is a cover plate (85). Above the fixed plate (5), there is a top plate (7) supported by a pole (6). Above the top plate (7), there is a motor (9) for driving the rotating rod (83) to rotate.

2. A hydraulic structure for river sediment retention as described in claim 1, characterized in that: The diameter of the lifting tank (84) is slightly larger than the diameter of the lifting cylinder (8).

3. A hydraulic structure for river sediment retention as described in claim 1, characterized in that: The lower end of the lifting cylinder (8) is located at the bottom of the sedimentation tank (4), and an opening is provided at the lower end of the lifting cylinder (8).

4. A hydraulic structure for river sediment retention as described in claim 1, characterized in that: The outer side of the lifting cylinder (8) is provided with a mounting bracket (81), and the lifting cylinder (8) can be fixed by connecting the mounting bracket (81) with the fixing plate (5).

5. A hydraulic structure for river sediment retention as described in claim 1, characterized in that: The diverter plate (3) adopts a right-angled triangular structure.

6. A hydraulic structure for river sediment retention as described in claim 1, characterized in that: The sand-blocking staircase (2) consists of multiple steps arranged in sequence, and each step is inclined.

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