A long channel porous irrigation head sand pool

Abstract

This invention belongs to the technical field of irrigation sedimentation tanks, specifically disclosing a long-channel, multi-porous irrigation head sedimentation tank. It includes a tank body, with a filter screen installed at one end of the tank body, and a water inlet at the end of the tank body away from the opening. The distance between the opposite side walls of the tank body gradually increases from bottom to top. Multiple sand-trapping barriers are sequentially arranged along the water flow direction within the tank body, and these barriers are respectively and staggered on the opposite side walls of the tank body. Each sand-trapping barrier includes a limiting mesh frame, within which a filler with a water-passing gap is installed. A first sand-cleaning mechanism for clearing sediment is located at the bottom of the tank body. This invention extends the water flow channel by using multiple staggered sand-trapping barriers, increasing the sediment settling time; achieves water permeability and sand blocking through the filler with water-passing gaps; and reduces dredging costs through the sand-cleaning mechanism, thereby improving sedimentation efficiency and irrigation water efficiency within a limited size.

Description

Technical Field

[0001] This invention belongs to the technical field of sedimentation tanks, and particularly relates to a long-channel, multi-hole type irrigation head sedimentation tank. Background Technology

[0002] With the widespread application of water-saving irrigation technologies, the requirements for irrigation water quality are becoming increasingly stringent. Northwest China is characterized by mountain streams and rivers with high sediment concentrations. To meet irrigation water requirements, sedimentation basins play a crucial role as a primary sedimentation measure. Currently, the most commonly used sedimentation basin structure is the linear sedimentation basin, which is simple in structure and stable in operation, but suffers from problems such as low sedimentation efficiency, limited structural dimensions, and high dredging costs.

[0003] Sand-trapping embankments are commonly added to sedimentation basins at the head of irrigation systems. However, existing sand-trapping embankments are mostly solid structures made of concrete and bricks, which cannot effectively intercept fine-particle sediment while ensuring irrigation water efficiency.

[0004] Therefore, there is an urgent need for a long-channel, multi-hole type of sedimentation basin for the head of irrigation systems. Summary of the Invention

[0005] The purpose of this invention is to provide a long-channel, porous irrigation head sedimentation tank to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following solution: A long-channel, porous irrigation head sedimentation tank includes a tank body with an opening at one end. A filter screen is installed at the opening of the tank body, and a water inlet is installed at the end of the tank body away from the opening. The distance between the opposite side walls of the tank body gradually increases from bottom to top. Multiple sand-trapping barriers are sequentially arranged in the tank body along the water flow direction. The multiple sand-trapping barriers are respectively installed on the opposite side walls of the tank body, and the multiple sand-trapping barriers on the opposite side walls of the tank body are staggered. The sand-blocking embankment includes a limiting mesh frame, and a filling element is provided inside the limiting mesh frame, with a water passage gap provided inside the filling element; A first sand-cleaning mechanism for cleaning sediment is installed at the bottom of the pool.

[0007] Water enters the pool through the front and side inlets, with the side walls featuring a gradually increasing number of inlets from bottom to top to ensure a smooth transition. As the water flows along the pool's direction, multiple sand-trapping barriers staggered on the side walls force it to flow in an S-shape, effectively extending the flow path and increasing sediment settling time. Water-passing gaps within the packing allow clean water to pass through while intercepting sediment particles. The primary sand-cleaning mechanism can be used to periodically remove sediment deposited at the bottom of the pool.

[0008] By using staggered sand-blocking barriers to extend the flow channel, porous filling components to achieve water permeability and sand blocking, and a sand-cleaning mechanism that is easy to maintain, the problems of low settling efficiency and high dredging costs can be solved together.

[0009] Preferably, the filler includes a first filler body and a second filler body, the second filler body being located below the first filler body, and the water passage gap within the second filler body being larger than the water passage gap within the first filler body.

[0010] When water flows through the first and second filler bodies, the larger gaps in the second filler body allow for faster water flow and reduced bottom resistance, while the smaller gaps in the upper layer effectively intercept fine particles of sediment. This combination of different gaps in the upper and lower layers achieves tiered interception: the upper layer intercepts fine particles, while the lower layer ensures sufficient water flow, thus improving overall settling efficiency.

[0011] Preferably, the water inlet includes a front inlet located at the end of the pool body away from the filter screen and a side inlet located on the side wall of the pool body, wherein the side inlet and the front inlet are located upstream of the sand-trapping sill.

[0012] The front inlet and side inlet allow water to enter the pool from the ends and sides, respectively, and the water from both directions converges upstream of the sand-trapping embankment. This multi-directional water inlet structure can adapt to different irrigation water source conditions, increase the inlet cross-sectional area, reduce the inlet flow velocity, and avoid disturbing the settling environment inside the pool with high-speed water flow.

[0013] Preferably, a flow regulating plate is provided upstream of the sand-blocking sill, the flow regulating plate is perpendicular to the water flow direction, and the flow regulating plate is located in the pool body and downstream of the front inlet and the side inlet.

[0014] The flow regulating plate is located downstream of the front inlet and the side inlet, and upstream of the sediment trap. After entering through the front inlet and the side inlet, the water flows vertically through the flow regulating plate, which forces the water from both directions to mix evenly as it passes through the plate, eliminating local high-speed flow zones and providing a stable settling environment for the subsequent sediment trap.

[0015] Preferably, the flow control plate includes a vertically arranged plate body, on which a plurality of through holes are formed, and the plurality of through holes are distributed in an array.

[0016] Multiple arrayed perforations on the plate allow water to flow evenly, avoiding concentrated impact. The arrayed perforation structure is simple, easy to manufacture, and effectively achieves water flow rectification and equalization.

[0017] Preferably, the outer circumferential side of the limiting frame is fixed with a plurality of fixed frames, which are arranged sequentially from top to bottom at intervals.

[0018] Multiple fixed frames are sequentially fixed to the outside of the limiting mesh frame from top to bottom, which enhances the overall structural strength of the limiting mesh frame, prevents the filling material from deforming or collapsing under the impact of water flow, and ensures the structural stability of the sand-trapping dam in a porous state.

[0019] Preferably, the first sand-clearing mechanism includes a lifting component embedded in the pool body, the top end of which is fixedly connected to the limiting mesh frame.

[0020] The lifting assembly is embedded in the pool body, with its top fixedly connected to the restraining net frame. When dredging or maintenance is required, the lifting assembly can lift the sand-trapping sill upwards, detaching it from the pool bottom. This facilitates the cleaning of sediment below and the flushing and maintenance of the fill material. After dredging is completed, it is lowered back to its original position to continue working.

[0021] Preferably, the filling material of the first filler includes pebbles.

[0022] The first filler material is pebbles. Pebbles are widely available, inexpensive, resistant to water erosion, and have natural pores, making them suitable as a filling medium for porous sand-trapping structures.

[0023] Preferably, the filling material of the second filler includes pebbles, and the pebble particle size selected for the first filler is smaller than that selected for the second filler.

[0024] The first filler consists of smaller-diameter pebbles that create smaller water passage gaps to intercept fine particles of silt; the second filler consists of larger-diameter pebbles that create larger water passage gaps to ensure the bottom water passage capacity. The difference in pebble size between the upper and lower layers achieves a tiered interception function.

[0025] Preferably, the porosity of both the first filler and the second filler is less than 40%.

[0026] The porosity of both the first and second fillers is less than 40%. Within this porosity range, while ensuring the normal passage of clean water, fine particles of sediment can be effectively intercepted, preventing fine particles of sediment from penetrating the sand-retaining sill due to excessively large pores, thus ensuring the settling effect.

[0027] Compared with the prior art, the present invention has the following advantages and technical effects: This invention utilizes multiple staggered sand-retaining barriers arranged on opposite side walls of the pool to create an S-shaped water flow path, extending the flow channel and sediment settling time, thus solving the problem of low settling efficiency in existing straight-line sedimentation tanks. By gradually increasing the distance between the side walls from bottom to top, the invention optimizes the water flow pattern and sediment deposition conditions within a limited area, overcoming the constraint of structural size on settling efficiency. A sand-cleaning mechanism located at the bottom of the pool facilitates regular cleaning of deposited sediment, reducing dredging costs. Furthermore, the inclusion of fillers with water-passing gaps within the sand-retaining barriers allows clean water to pass through while intercepting fine sediment particles, solving the problem that existing solid sand-retaining barriers cannot simultaneously achieve irrigation water efficiency and fine particle interception. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort: Figure 1 This is a top view of Embodiment 1 of the present invention; Figure 2 This is a front view of the flow control plate in this invention; Figure 3 This is a top view of the sand-trapping embankment in this invention; Figure 4 for Figure 3 AA section view in the middle; Figure 5 This is a top view of Embodiment 2 of the present invention; Figure 6 for Figure 5 BB section view in the middle; Figure 7 for Figure 6 A magnified view of a section at point C; Figure 8 This is a schematic diagram of the connection between the vertical pipe and the horizontal pipe in this invention; The components include: 1. Pool body; 2. Flow regulating plate; 3. Sand trap; 4. Front inlet; 5. Side inlet; 6. Filter screen; 201. Plate; 202. Through hole; 301. Fixing frame; 302. Restricting mesh frame; 303. First filler; 304. Second filler; 7. Sand collection trough; 8. Long rod; 9. Roller; 10. Vertical pipe; 11. Horizontal pipe; 12. Connecting pipe; 13. Transmission rod; 14. Worm gear; 15. Worm; 16. First rotation drive component; 17. Threaded rod; 18. Nut; 19. Second rotation drive component; 20. First pulley; 21. Second pulley; 22. Baffle; 23. First auger; 24. Sealing slip ring. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Example 1 Reference Figures 1 to 4 This embodiment discloses a long-channel porous irrigation head sedimentation tank, including a tank body 1, with an opening at one end of the tank body 1. A filter screen 6 is provided at the opening of the tank body 1, and a water inlet is provided at the end of the tank body 1 away from the opening. The distance between the opposite side walls of the tank body 1 gradually increases from bottom to top. Multiple sand-blocking sills 3 are sequentially arranged in the tank body 1 along the water flow direction. The multiple sand-blocking sills 3 are respectively arranged on the opposite side walls of the tank body 1, and the multiple sand-blocking sills 3 on the opposite side walls of the tank body 1 are staggered. The sand-blocking embankment 3 includes a limiting mesh frame 302, and a filling element is provided inside the limiting mesh frame 302. A water passage gap is provided inside the filling element. A first sand-cleaning mechanism for cleaning sediment is installed at the bottom of pool 1.

[0032] The scheme is further optimized. The filler includes a first filler body 303 and a second filler body 304. The second filler body 304 is located below the first filler body 303, and the water passage gap in the second filler body 304 is larger than the water passage gap in the first filler body 303.

[0033] The scheme is further optimized. The water inlet includes a front inlet 4 located at the end of the pool body 1 away from the filter screen 6 and a side inlet 5 located on the side wall of the pool body 1. The side inlet 5 and the front inlet 4 are located upstream of the sand-blocking sill 3.

[0034] To further optimize the design, a flow regulating plate 2 is installed upstream of the sand-blocking dam 3. The flow regulating plate 2 is perpendicular to the water flow direction and is located inside the pool body 1, downstream of the front inlet 4 and the side inlet 5.

[0035] Further optimization of the scheme: the flow control plate 2 includes a vertically arranged plate body 201, and multiple through holes 202 are opened on the plate body 201, and the multiple through holes 202 are distributed in an array.

[0036] The scheme is further optimized by fixing multiple fixed frames 301 to the outer circumference of the grid frame 302, with the multiple fixed frames 301 arranged sequentially from top to bottom at intervals.

[0037] Further optimization of the scheme: the first sand-clearing mechanism includes a lifting component buried in the pool body 1, and the top of the lifting component is fixedly connected to the limiting net frame 302.

[0038] Further optimization of the scheme: the filling material of the first filler 303 includes pebbles.

[0039] In a further optimized design, the filling material of the second filler 304 includes pebbles, and the pebble particle size selected for the first filler 303 is smaller than that selected for the second filler 304.

[0040] Further optimization of the scheme resulted in porosity of less than 40% for both the first filler 303 and the second filler 304.

[0041] Detailed working process: Water flows into pool 1 through front inlet 4 and side inlet 5 respectively, and the two water flows converge upstream of sand retaining wall 3. The water continues to flow and encounters flow regulating plate 2 set perpendicular to the direction of water flow. The plate 2 has an array of through holes 202 on its plate body 201. When the water flows through the through holes 202, it is forced to mix evenly, eliminating local high-speed water flow areas.

[0042] The mixed water flows along the pool body 1 towards the opening. Multiple sand-trapping barriers 3 are staggered on the opposite side walls of the pool body 1, and the water flows around or through each barrier 3 in sequence. Because the multiple sand-trapping barriers 3 are staggered on the side walls, the water flows forward in an S-shaped path within the pool body 1, and the channel length is longer than the actual length of the pool body 1.

[0043] When the water flow reaches the sand-retaining dam 3, part of the water flows around the top of the dam 3, while part flows through the filling material inside the dam 3. The filling material includes an upper first filling body 303 and a lower second filling body 304. The water passage gap in the second filling body 304 is larger than that in the first filling body 303. When the water flows through the first filling body 303, fine particles of silt are intercepted by the smaller gap; when the water flows through the second filling body 304, the larger gap allows the water to pass through quickly, reducing the flow resistance at the bottom. Multiple fixed frames 301 circumferentially fixed to the outer side of the restraining mesh frame 302 keep the restraining mesh frame 302 structurally stable and prevent the filling material from deforming under the impact of the water flow.

[0044] The clear water flowing through the sand-blocking embankment 3 continues to flow forward and eventually reaches the opening of the pool body 1. The filter screen 6 installed at the opening intercepts any floating organic matter in the water before flowing out of the pool body 1. The sediment particles settle to the bottom of the pool body 1 due to gravity. Since the distance between the two side walls of the pool body 1 gradually increases from bottom to top, the settled sediment is concentrated in a narrower area at the bottom of the pool body 1.

[0045] When dredging is required, the lifting assembly embedded in the pool body 1 is activated. The top of the lifting assembly is fixedly connected to the limiting net frame 302, lifting the sand-trapping barrier 3 upwards, causing it to detach from the pool bottom. This allows for the removal of sediment and silt deposited below, while simultaneously flushing the filler to restore its porosity. After dredging is completed, the lifting assembly lowers the sand-trapping barrier 3 back to its original position to continue operation.

[0046] Example 2 Reference Figures 5 to 8 The difference from Embodiment 1 is that in this embodiment, the first sand-clearing mechanism is replaced by a second sand-clearing mechanism. The second sand-clearing mechanism includes a cavity located below the pool body 1. Multiple sand-collecting channels 7 are provided on the bottom wall of the pool body 1. The multiple sand-collecting channels 7 are correspondingly arranged with multiple sand-blocking sills 3 and are located upstream of the sand-blocking sills 3. The widest part of the sand-collecting channel 7 is the same as the width of the bottom wall of the pool body 1. The sand-collecting channel 7 gradually narrows from top to bottom. The bottom end of the sand-collecting channel 7 is connected to a riser pipe 10. The riser pipe 10 is located in the cavity. The top end of the riser pipe 10 is provided with a baffle 22 for sealing the bottom opening of the sand-collecting channel 7. The baffle 22 is detachably connected to the riser pipe 10 through a socket. One end of the baffle 22 extends out of the riser pipe 10. Multiple baffles The ends of the 22 extending from the riser 10 are all fixedly connected to the long rod 8. The long rod 8 is located on one side of the riser 10. Multiple rollers 9 are rolledly connected to the bottom end of the long rod 8. The rollers 9 are rotatably connected to the inner wall of the cavity. A nut 18 is fixedly connected to one end of the long rod 8. The nut 18 is threadedly connected to the threaded rod 17. The threaded rod 17 is coaxially fixed to the output shaft of the first rotation drive 16. The first rotation drive 16 is fixed inside the cavity. The axis of the first rotation drive 16 is parallel to the axis of the long rod 8. The first rotation drive 16 drives the threaded rod 17 to rotate. The threaded rod 17 drives the long rod 8 to move through the nut 18, and simultaneously moves multiple baffles 22 to open the lower opening of the sand collection trough 7 so that sand can fall.

[0047] The bottom end of the riser 10 is connected to the horizontal pipe 11 via the connecting pipe 12. One end of the horizontal pipe 11 extends out of the cavity. The horizontal pipe 11 is located on one side of the riser 10. A second auger is coaxially arranged inside the horizontal pipe 11. One end of the second auger shaft extends out of the horizontal pipe 11 and is coaxially fixed to the output shaft of the second rotation drive 19. The second rotation drive 19 is fixedly installed inside the cavity. The sediment enters the horizontal pipe 11 and is transported to the outside of the cavity by the second screw conveyor.

[0048] A first auger 23 is installed inside the riser 10. A transmission rod 13 is coaxially fixed to the first auger 23. The transmission rod 13 is rotatably connected to the connecting pipe 12 through a sealing slip ring 24. The bottom end of the transmission rod 13 passes through the connecting pipe 12 and is rotatably connected to the bottom wall of the cavity. A worm gear 14 is coaxially fixed to the outside of the transmission rod 13. Multiple worm gears 14 mesh with a worm 15. The worm 15 is rotatably connected to the cavity through two rotating seats. A second pulley 21 is coaxially fixed to the outside of the worm 15. The second pulley 21 is connected to the first pulley 20 through a synchronous belt. The first pulley 20 is coaxially fixed to the output shaft of the second rotation drive 19.

[0049] The first screw conveyor 23 drives the sediment to descend, preventing the sediment from clogging during its descent.

[0050] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0051] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A long-lateral porous irrigation head with a sediment tank, characterized in that, Includes a pool body (1), one end of which is open, a filter screen (6) is provided at the opening of the pool body (1), and a water inlet is provided at the end of the pool body (1) away from the opening. The distance between the opposite side walls of the pool body (1) gradually increases from bottom to top. Multiple sand-blocking barriers (3) are arranged sequentially in the pool body (1) along the water flow direction. The multiple sand-blocking barriers (3) are respectively arranged on the opposite side walls of the pool body (1), and the multiple sand-blocking barriers (3) on the opposite side walls of the pool body (1) are arranged alternately. The sand-blocking embankment (3) includes a limiting mesh frame (302), and a filling element is provided inside the limiting mesh frame (302), and a water passage gap is provided inside the filling element; A first sand-cleaning mechanism for cleaning sediment is provided below the pool body (1).

2. A long-flume perforated irrigation head silt basin according to claim 1, characterized in that: The filler includes a first filler (303) and a second filler (304), the second filler (304) being located below the first filler (303), and the water passage gap in the second filler (304) being larger than the water passage gap in the first filler (303).

3. A long-flume perforated irrigation head silt basin according to claim 1, characterized in that: The water inlet includes a front inlet (4) located at the end of the pool body (1) away from the filter screen (6) and a side inlet (5) located on the side wall of the pool body (1). The side inlet (5) and the front inlet (4) are located upstream of the sand retaining wall (3).

4. A long-flume perforated irrigation header sediment basin according to claim 3, characterized in that: A flow regulating plate (2) is provided upstream of the sand-blocking embankment (3). The flow regulating plate (2) is perpendicular to the water flow direction. The flow regulating plate (2) is located inside the pool body (1) and downstream of the front inlet (4) and the side inlet (5).

5. A long-channel, porous irrigation head sedimentation tank according to claim 4, characterized in that: The flow control plate (2) includes a vertically arranged plate body (201), and a plurality of through holes (202) are provided on the plate body (201), and the plurality of through holes (202) are distributed in an array.

6. The long-channel, porous irrigation head sedimentation tank according to claim 1, characterized in that: The outer circumferential of the limiting frame (302) is fixed with a plurality of fixed frames (301), which are arranged sequentially from top to bottom at intervals.

7. The long-channel, porous irrigation head sedimentation tank according to claim 1, characterized in that: The first sand-clearing mechanism includes a lifting component buried in the pool body (1), and the top of the lifting component is fixedly connected to the limiting net frame (302).

8. A long-channel, porous irrigation head sedimentation tank according to claim 2, characterized in that: The filling material of the first filler (303) includes pebbles.

9. A long-channel, porous irrigation head sedimentation tank according to claim 8, characterized in that: The filling material of the second filler (304) includes pebbles, and the pebble particle size selected for the first filler (303) is smaller than that selected for the second filler (304).

10. A long-channel, porous irrigation head sedimentation tank according to claim 2, characterized in that: The porosity of both the first filler (303) and the second filler (304) is less than 40%.

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