A fishway siltation prevention baffle and fishway

Abstract

This utility model belongs to the technical field of fishway equipment, specifically relating to an anti-siltation baffle and fishway. The utility model includes a fastener, an upper baffle, a lower baffle, a folding component, and a telescopic positioning mechanism. The upper and lower baffles are arranged vertically, connected on their backwater sides by the folding component. A telescopic positioning mechanism is provided on both the upper and lower baffles. A fixing buckle is connected to the top of the upper baffle. When silt removal is required, the telescopic positioning mechanism is retracted, and then the operator pushes the lower part of the lower baffle downstream, causing it to fold back and merge with the upper baffle via the fastener, facilitating silt removal. The foldable connection between the lower and upper baffles on their backwater sides conforms to the siltation pattern of fishways, allowing the lower baffle to be easily folded over, preparing for subsequent silt removal.

Description

Technical Field

[0001] This utility model belongs to the field of fishway equipment technology, specifically relating to a fishway anti-siltation baffle and fishway. Background Technology

[0002] Vertical slotted fishways are widely used in fishway projects both domestically and internationally due to their advantages such as simple structure, strong adjustability of hydraulic conditions, and adaptability to the swimming abilities of different fish species.

[0003] However, in silty waters, the baffles in existing vertical slotted fishways exhibit significant hydrodynamic defects in actual operation. Due to the distinct distribution of the main flow zone and the still flow zone within the tank, the sediment-carrying capacity decreases sharply upon reaching the still flow zone, leading to substantial sediment accumulation. This continuous accumulation alters the fishway's design hydraulic parameters, resulting in a significant decrease in the passage rate of target fish species. Traditional dredging operations require interrupting fishway operation and manual excavation, resulting in high maintenance costs per operation and the risk of damaging the baffle structure's stability. These methods are also labor-intensive and inefficient. In silty waters, sediment accumulation and dredging often cause significant variations in water depth upstream and downstream. When the downstream water depth increases, the flow velocity in the vertical slotted fishway decreases due to the influence of stagnant water, resulting in poor fish attraction. Conversely, when the downstream water depth decreases, the flow velocity increases due to the influence of cascading water, exceeding the flow velocity required to carry target fish, rendering the fishway ineffective for fish passage.

[0004] The existing technology, with application number CN202310273031.3 and invention titled "A Movable Baffle in a Fishway with a Movable Baffle," employs an open-door type baffle. This design allows the baffle to rotate around an axis fixed to the side wall of the fishway when sand removal is needed, thereby achieving the removal of mud and sand. However, when the mud and sand are large, the movable baffle cannot rotate at all. Utility Model Content

[0005] This utility model provides a mud and sand siltation prevention partition and a fish passage, the purpose of which is to provide a fish passage partition that facilitates sand removal operations.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A fishway silt-prevention baffle includes a fastener, an upper baffle, a lower baffle, a folding component, and a telescopic positioning mechanism. The upper and lower baffles are arranged vertically, and their backwater sides are connected by the folding component. The upper and lower baffles are equipped with a telescopic positioning mechanism. A fixing buckle is connected to the top of the upper baffle.

[0007] The fastener includes a fixed buckle, a rotating shaft, and a fixing plate; the fixed buckle is rotatably connected to the fixing plate via the rotating shaft; the fixing plate is detachably connected to the backwater side of the top of the upper partition.

[0008] The upper partition is a rectangular plate; a hydraulic rod controller is connected to the top of the upper partition; a fastener is connected to the top of the back side of the upper partition; a through hole is opened vertically on one side wall of the upper partition to accommodate the telescopic positioning mechanism; the telescopic positioning mechanism is electrically connected to the hydraulic rod controller to control the extension and retraction of the telescopic positioning mechanism.

[0009] The hydraulic rod controller includes at least a signal sending module, an extension control module, and a retraction control module; the extension control module and the retraction control module are electrically connected to the signal sending module; the signal sending module is electrically connected to the telescopic positioning mechanism.

[0010] The lower partition is a rectangular plate; the width of the lower partition is the same as the width of the upper partition; a through hole for the telescopic positioning mechanism is opened on one side of the lower partition; the upper part of the backwater side of the lower partition is foldably connected to the lower part of the backwater side of the upper partition through a folding piece.

[0011] The folding component is a hinge.

[0012] The telescopic positioning mechanism uses a telescopic hydraulic rod; the height ratio of the upper partition to the lower partition is 1:1.

[0013] A fishway with anti-siltation baffles includes multiple sets of fishway baffles; the fishway baffles are anti-siltation baffles; the fishway includes fishway sidewalls, a fishway bottom plate, and a water-retaining pier; the fishway sidewalls and the fishway bottom plate form a right-angled U-shaped channel; the water-retaining piers are installed inside the channel; the multiple sets of anti-siltation baffles are spaced apart in the channel upstream of the water-retaining piers and are perpendicular to the channel axis; the upper baffles are fixedly connected to the sidewalls of the fishway.

[0014] Each set of fishway anti-siltation baffles includes two fishway anti-siltation baffles of different widths; the two fishway anti-siltation baffles are staggered front to back and are both perpendicular to the side wall of the channel.

[0015] The ratio of the width of the two fishway anti-siltation baffles in each group to the width of the channel is 20:12:5. Beneficial effects

[0016] 1. This utility model is organically composed of a buckle, an upper partition, a lower partition, a folding component, and a telescopic positioning mechanism. When it is necessary to clean mud and sand, the telescopic positioning mechanism is controlled to retract, and then the operator pushes the lower part of the lower partition downwards, causing the lower partition to fold back and be integrated with the upper partition through the buckle, thus facilitating the sand cleaning operation.

[0017] 2. In this utility model, the lower partition and the upper partition are foldably connected on the backwater side by a folding piece, which conforms to the sand accumulation law of fish passage, so that the lower partition can be easily folded over to prepare for subsequent sand removal.

[0018] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the fish passage anti-siltation partition of this utility model.

[0021] Figure 2 This is a schematic diagram showing the usage of the fishway anti-siltation baffle of this utility model.

[0022] Figure 3 This is a schematic diagram of the fishway anti-siltation partition of this utility model in its fully closed state.

[0023] Figure 4 This is a schematic diagram of the fastener in this utility model.

[0024] Figure 5 This is a schematic diagram of the fish passage structure in this utility model.

[0025] In the diagram: 1. Water-retaining pier; 2. Fastener; 3. Expansion bolt; 4. Telescopic hydraulic rod; 5. Through hole; 6. Hydraulic rod controller; 7. Upper partition; 8. Lower partition; 9. Folding component; 10. Waterproof screw; 11. Fixing buckle; 12. Fishway anti-siltation partition; 13. Fishway sidewall; 14. Rotating shaft; 15. Fixing plate; 16. Fishway bottom 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. Example 1:

[0027] according to Figures 1-5 The fishway silt-prevention baffle shown includes a buckle 2, an upper baffle 7, a lower baffle 8, a folding component 9, and a telescopic positioning mechanism; the upper baffle 7 and the lower baffle 8 are arranged vertically, and the backwater sides of the upper baffle 7 and the lower baffle 8 are connected by the folding component 9; the upper baffle 7 and the lower baffle 8 are provided with telescopic positioning mechanisms; the top of the upper baffle 7 is connected to a fixing buckle 11.

[0028] In actual use, when sand removal is not required, the telescopic positioning mechanism connects the upper partition 7 and the lower partition 8 into one unit, so that the upper and lower parts of the partition are always kept on the same plane, thus preventing the lower partition 8 from flipping upward under the action of sand or water.

[0029] When the fishway is not in operation and needs to be cleared of mud and sand, the telescopic positioning mechanism is retracted by controlling it. Then, the operator pushes the lower part of the partition downstream, causing the lower partition to fold back and be integrated with the upper partition through the fastener, making it easy to carry out the sand clearing operation.

[0030] Since there is more sand accumulation on the upstream side of the partition than on the downstream side, the folding piece 9 is set on the back side of the upper partition 7 and the lower partition 8, making it easier to fold the lower partition 8.

[0031] To make it easier to fold the lower partition 8, a pull rope can be connected to the lower end of the backwater side of the lower partition 8. When the lower partition 8 needs to be folded, simply pull the pull rope. Example 2:

[0032] according to Figures 1-4 The fishway anti-siltation baffle shown is based on Embodiment 1. The buckle 2 includes a fixing buckle 11, a rotating shaft 14 and a fixing plate 15. The fixing buckle 11 is rotatably connected to the fixing plate 15 through the rotating shaft 14. The fixing plate 15 is detachably connected to the backwater side of the top of the upper baffle 7.

[0033] Furthermore, the upper partition 7 is a rectangular plate; a hydraulic rod controller 6 is connected to the top of the upper partition 7; a fastener 2 is connected to the top of the back side of the upper partition 7; a through hole 5 is opened vertically on one side wall of the upper partition 7, the through hole 5 is used to accommodate the telescopic positioning mechanism; the telescopic positioning mechanism is electrically connected to the hydraulic rod controller 6 to control the extension and retraction of the telescopic positioning mechanism.

[0034] Furthermore, the hydraulic rod controller 6 includes at least a signal sending module, an extension control module, and a retraction control module; the extension control module and the retraction control module are electrically connected to the signal sending module; the signal sending module is electrically connected to the telescopic positioning mechanism.

[0035] Furthermore, the telescopic positioning mechanism uses a telescopic hydraulic rod 4.

[0036] In practical use, when sand removal is required, the retractable hydraulic rod 4, located in the through hole 5, is retracted via the hydraulic rod controller 6. This allows the retractable hydraulic rod 4 to be pulled out from the lower partition 8. The lower partition 8 is then rotated along the folding member 9 until it overlaps with the upper partition 7. The fixing buckle 11 then rotates downwards around the pivot 14 until it locks the lower partition 8 in place, allowing the water flow at the bottom of the fishway to directly flush away the silt. After the silt is flushed away, the fixing buckle 11 is flipped upwards to release the restriction on the lower partition 8. The lower partition 8 then rotates downwards around the folding member 9 until it resets. Finally, the hydraulic rod controller 6 is activated to extend the retractable hydraulic rod 4 located in the through hole 5 and insert it into the blind hole on the lower partition 8.

[0037] The telescopic positioning mechanism uses a telescopic hydraulic rod 4, which not only facilitates the realization of the function, but also has a low cost. Example 3:

[0038] according to Figures 1-3 The fishway silt-prevention baffle shown is based on Embodiment 1, wherein the lower baffle 8 is a rectangular plate; the width of the lower baffle 8 is the same as the width of the upper baffle 7; a through hole for the telescopic positioning mechanism is opened on one side of the lower baffle 8; the upper part of the backwater side of the lower baffle 8 is foldably connected to the lower part of the backwater side of the upper baffle 7 through a folding piece 9.

[0039] In practical use, the lower partition 8 adopts this technical solution, which not only facilitates its connection with the upper partition 7, but also makes it easy to flip. Example 4:

[0040] according to Figures 1-5 The fishway anti-siltation partition shown is based on Embodiment 1 or Embodiment 3, except that the folding component 9 is a hinge.

[0041] In practical use, the folding component 9 adopts a hinge technology, which makes the cost of this utility model lower. Example 5:

[0042] according to Figures 1-3 The fishway anti-siltation partition shown is based on Embodiment 1, wherein the telescopic positioning mechanism adopts a telescopic hydraulic rod 4; the height ratio of the upper partition 7 and the lower partition 8 is 1:1.

[0043] In practical use, the telescopic positioning mechanism uses a telescopic hydraulic rod 4, which is not only low in cost and easy to implement, but also occupies less space. Example 6:

[0044] according to Figures 1-5 The fishway shown includes multiple sets of fishway partitions with anti-siltation baffles; the fishway partitions are fishway anti-siltation baffles 12; the fishway includes fishway sidewalls 13, fishway bottom plate 16, and water-retaining piers 1; the fishway sidewalls 13 and fishway bottom plate 16 form a right-angled U-shaped channel; the water-retaining piers 1 are set inside the channel; the multiple sets of fishway anti-siltation baffles 12 are spaced apart in the channel upstream of the water-retaining piers 1 and are perpendicular to the channel axis; the upper baffle 7 is fixedly connected to the fishway sidewalls 13.

[0045] Furthermore, each set of fishway anti-siltation baffles 12 includes two fishway anti-siltation baffles 12 with different widths; the two fishway anti-siltation baffles 12 are staggered front and back and are both perpendicular to the side wall of the channel.

[0046] Furthermore, the width ratio of the two fishway anti-siltation baffles 12 in each group to the width of the channel is 20:12:5.

[0047] In actual use, when the fishway is not in operation, the mud and sand are directly flushed away by the water flow at the bottom of the fishway through the operation of the fishway anti-siltation baffle 12.

[0048] Where there is no conflict, those skilled in the art can combine the relevant technical features in the above examples according to the actual situation to achieve the corresponding technical effects. Specific details of the various combinations will not be elaborated here.

[0049] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0050] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0051] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any simple modifications, equivalent variations, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the present invention.

Claims

1. A fishway anti-silt accumulation baffle, characterized by: It includes a buckle (2), an upper partition (7), a lower partition (8), a folding piece (9), and a telescopic positioning mechanism; the upper partition (7) and the lower partition (8) are arranged vertically, and the backwater sides of the upper partition (7) and the lower partition (8) are connected by the folding piece (9); the upper partition (7) and the lower partition (8) are provided with a telescopic positioning mechanism; the top of the upper partition (7) is connected with a fixing buckle (11); The fishway anti-siltation baffle has two working states: dredging and fish passage. In the fish passage state, the telescopic positioning mechanism connects the upper baffle (7) and the lower baffle (8) into one unit, keeping them on the same plane. In the dredging state, the telescopic positioning mechanism retracts, and the lower baffle (8) can be folded upward relative to the upper baffle (7) towards the backwater side and fixed by the buckle (2).

2. The fishway anti-silt accumulation baffle according to claim 1, characterized in that: The buckle (2) includes a fixed buckle (11), a rotating shaft (14) and a fixing plate (15); the fixed buckle (11) is rotatably connected to the fixing plate (15) via the rotating shaft (14); the fixing plate (15) is detachably connected to the back side of the top of the upper partition (7).

3. A fishway anti-silting baffle according to claim 1 or 2, characterized in that: The upper partition (7) is a rectangular plate; a hydraulic rod controller (6) is connected to the top of the upper partition (7); a buckle (2) is connected to the top of the back side of the upper partition (7); a through hole (5) is opened vertically on one side wall of the upper partition (7), and the through hole (5) is used to accommodate the telescopic positioning mechanism; the telescopic positioning mechanism is electrically connected to the hydraulic rod controller (6) to control the telescopic positioning mechanism.

4. The fishway anti-silt accumulation baffle according to claim 3, wherein: The hydraulic rod controller (6) includes at least a signal sending module, an extension control module, and a retraction control module; the extension control module and the retraction control module are electrically connected to the signal sending module; the signal sending module is electrically connected to the telescopic positioning mechanism.

5. The fishway anti-silt accumulation baffle of claim 1, wherein: The lower partition (8) is a rectangular plate; the width of the lower partition (8) is the same as the width of the upper partition (7); a through hole for the telescopic positioning mechanism is opened on one side of the lower partition (8); the upper part of the backwater side of the lower partition (8) is foldably connected to the lower part of the backwater side of the upper partition (7) through a folding piece (9).

6. A fishway silt-prevention baffle as described in claim 1 or 5, characterized in that: The folding component (9) is a hinge.

7. The fishway anti-silting baffle according to claim 1, characterized in that: The telescopic positioning mechanism uses a telescopic hydraulic rod (4); the height ratio of the upper partition (7) and the lower partition (8) is 1:

1.

8. A fishway with a silt accumulation preventing partition, characterized by: It includes multiple sets of fishway partitions; the fishway partitions are fishway anti-siltation partitions (12) as described in any one of claims 1-7; the fishway includes fishway sidewalls (13), fishway bottom plate (16) and water-retaining piers (1); the fishway sidewalls (13) and fishway bottom plate (16) form a right-angled U-shaped channel; the water-retaining piers (1) are set in the channel; the multiple sets of fishway anti-siltation partitions (12) are spaced out in the channel upstream of the water-retaining piers (1) and are set perpendicular to the channel axis; the upper partition (7) is fixedly connected to the fishway sidewalls (13).

9. A fishway with anti-silt accumulation baffles as claimed in claim 8, characterized in that: Each set of fishway anti-siltation baffles (12) includes two fishway anti-siltation baffles (12) with different widths; the two fishway anti-siltation baffles (12) are staggered front and back and are both perpendicular to the side wall of the channel.

10. A fishway with anti-silt accumulation baffles as claimed in claim 8 or 9, characterised in that: The ratio of the width of the two fishway anti-siltation baffles (12) in each group to the width of the channel is 20:12:5.

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