Water-collecting grid type sand-fixing and grass-planting structure

Abstract

The utility model discloses a kind of water-collecting grid sand-fixing and grass-planting structures, specifically related to sand-fixing and grass-planting field, including connecting stake, connecting stake is vertically arranged cylinder, at least four water inlets are evenly provided with in the circumferential of connecting stake top side wall, sand discharge hole is provided in the center of connecting stake bottom, connecting stake inside is equipped with cyclone separation cavity that passes through up and down, this cyclone separation cavity is the cavity of frustum of cone that is big up and small down, and all water inlets are communicated with the upper portion of cyclone separation cavity along the tangential direction of connecting stake, and fixedly connected with frame between adjacent connecting stake. The utility model is introduced by water-collecting net with surface having bionic hydrophilic-hydrophobic interval microstructure, efficiently captures fog, dew vapor in air and condenses into water droplet, in combination with the "passive water collection" of V-shaped groove of frame to rainwater, form the three-dimensional, all-weather water collection system of "air capture ground collection", greatly widen water source, significantly improve moisture acquisition ability in arid environment.

Description

Technical Field

[0001] This utility model relates to the field of sand fixation and grass planting technology, and more specifically, it relates to a water-collecting grid-shaped sand fixation and grass planting structure. Background Technology

[0002] Sand-fixing and grass-planting structures are a comprehensive windbreak and sand-fixing technology, mainly used to control mobile sand dunes and desertified land. By increasing surface roughness, it effectively reduces wind speed, fixes shifting sand, and intercepts rainwater to increase the moisture content of the sand layer. Under the protection of the grid structure, drought-resistant shrubs and herbaceous plants are intercropped to form a multi-layered vegetation cover, further stabilizing the sand and promoting ecological restoration. Since its application in the Baotou-Lanzhou Railway sand control project in the 1950s, it has become a "magic cube" for desertification control in China, combining ecological and economic benefits, and has been promoted to the field of desertification control worldwide.

[0003] Existing sand-fixing and grass-planting structures generally use simple V-shaped or U-shaped cross-section trenches as water collection units, relying entirely on natural rainfall. After rain falls, the water collects and flows along the surface of the trench. This process is only briefly activated when precipitation events occur. During long periods of drought or semi-arid weather without rain, the entire water collection system is completely in a state of functional stagnation and cannot obtain any water from the environment. The capture of water resources is completely limited to the single dimension of "liquid precipitation" and lacks the ability to actively collect water from moist gaseous or suspended water that is commonly found in arid areas, such as near-ground air, morning fog, and night dew.

[0004] In summary, in order to collect water from multiple sources, it is necessary to address the problem that existing grid structures rely on V-shaped or concave cross-sections to collect direct rainfall, cannot actively obtain moisture from humid air, and have extremely weak adaptability to arid and semi-arid regions. The goal is to enable sand-fixing and grass-planting structures to effectively collect both rainwater and moisture from humid air. Utility Model Content

[0005] The present invention provides a water-collecting grid-shaped sand-fixing and grass-planting structure, which aims to solve the problem that existing grid structures rely on V-shaped or concave cross-sections to collect direct rainfall and cannot actively obtain moisture from humid air, resulting in extremely weak adaptability to arid and semi-arid regions.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a water-collecting grid-like sand-fixing and grass-planting structure, including connecting piles, each connecting pile being a vertically arranged cylinder, with at least four water inlets evenly distributed along the circumference of the top sidewall of the connecting pile, and a sand discharge hole at the center of the bottom of the connecting pile. The connecting pile has a vertically penetrating vortex separation chamber, which is a frustum-shaped cavity that is larger at the top and smaller at the bottom. All water inlets are connected to the upper part of the vortex separation chamber along the tangential direction of the connecting pile. Adjacent connecting piles are fixedly connected with a frame, the cross-section of which is a V-shaped groove with an upward opening, a groove depth of 3cm-5cm, a wall thickness of 2mm-4mm, and a groove width of 8cm-15cm. A water-collecting net is fixedly connected to the upper surface of the frame.

[0007] In a preferred embodiment, the connecting pile has a wall thickness of 3mm-5mm, a height of 40cm-60cm, and a diameter of 15cm-25cm. A water storage pipe is fixedly connected inside the connecting pile, and a filter membrane is fixedly connected to the bottom of the water storage pipe. A sleeve is fixedly connected to the outer wall of the connecting pile, and several connecting pipes are fixedly connected between the sleeve and the water storage pipe. Several seepage holes are opened on the wall of the sleeve.

[0008] In a preferred embodiment, the angle between the frustum side of the cyclone separation chamber and the vertical direction is 10°-15°, and its lower end is smoothly connected to the sand discharge hole, the diameter of which is 5mm-10mm.

[0009] In a preferred embodiment, the water collection net is woven from composite fibers with a biomimetic hydrophilic-hydrophobic interleaved microstructure on the surface. The diameter of the single filament of the water collection net is 0.1mm-0.3mm, the mesh size is 0.5mm-2mm, and the laying height of the water collection net is 10cm-20cm higher than the upper edge of the frame.

[0010] In a preferred embodiment, a plurality of guide grooves 601 are provided on the V-shaped groove sidewall of the frame. The cross-section of the guide groove 601 is arc-shaped, with a depth of 2mm-4mm and a width of 3mm-6mm, and the bottom of the groove has a continuous downward slope of 0.5-1.5% towards the nearest connecting pile.

[0011] In a preferred embodiment, the water storage pipe is a circular pipe placed vertically at the central axis of the connecting pile. The diameter of the water storage pipe is 5cm-8cm and the wall thickness is 1mm-2mm. The filter membrane is a composite membrane of a superhydrophilic surface layer and a microporous filter layer, which covers and seals the bottom end of the water storage pipe.

[0012] In a preferred embodiment, the sleeve has a cylindrical porous structure with a wall thickness of 2mm-3mm, a diameter of 20cm-30cm, a height of 20cm-30cm, and a perforation hole diameter of 0.1mm-0.5mm.

[0013] In a preferred embodiment, the connecting pipe is a flexible capillary tube with an inner diameter of 3mm-5mm, the inlet end of the connecting pipe is connected to the side wall of the water storage pipe, and the outlet end of the connecting pipe is connected to the sleeve.

[0014] The beneficial effects of this utility model are as follows: 1. This utility model introduces a water collection net with a biomimetic hydrophilic-hydrophobic microstructure on its surface, which efficiently captures fog and dew vapor in the air and condenses them into water droplets, realizing "active water collection" from the air. Combined with the V-shaped groove of the frame for "passive water collection" of rainwater, it forms a three-dimensional, all-weather water collection system that "captures water from the air and collects it on the ground", which greatly expands the water source and significantly improves the ability to obtain water in arid environments.

[0015] This utility model utilizes a vortex separation chamber integrated within the connecting pile. Water enters through a tangential inlet and generates a high-speed vortex. Centrifugal force is used to separate sediment from water. The separated sediment is actively and continuously discharged from the system through the bottom sand discharge hole, eliminating the possibility of sediment entering subsequent water storage and irrigation units. This fundamentally solves the persistent problem of system blockage and ensures the long-term unobstructed flow of water storage and supply channels. 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 connecting pile structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the sleeve structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the cyclone separation chamber structure of this utility model.

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

[0021] Figure 6 This is a schematic diagram of the flow channel structure of this utility model.

[0022] The attached diagram is labeled as follows: 1. Connecting pile; 101. Inlet; 102. Swirl separation chamber; 103. Sand discharge hole; 2. Water storage pipe; 3. Filter membrane; 4. Connecting pipe; 5. Sleeve; 501. Seepage hole; 6. Frame; 601. Guide channel; 7. Water collection net. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0024] Refer to the instruction manual appendix Figures 1 to 6 A water-collecting grid-like sand-fixing and grass-planting structure includes connecting piles 1, which are vertically arranged cylinders. At least four water inlets 101 are evenly opened along the circumference of the top side wall of the connecting pile 1. A sand discharge hole 103 is opened at the center of the bottom of the connecting pile 1. A vertically connected vortex separation cavity 102 is provided inside the connecting pile 1. The vortex separation cavity 102 is a frustoconical cavity that is larger at the top and smaller at the bottom. All water inlets 101 are connected to the upper part of the vortex separation cavity 102 along the tangential direction of the connecting pile 1. A frame 6 is fixedly connected between adjacent connecting piles 1. The cross-section of the frame 6 is a V-shaped groove structure with an upward opening. The groove depth is 3cm-5cm, the wall thickness is 2mm-4mm, and the groove width is 8cm-15cm. A water collection net 7 is fixedly connected to the upper surface of the frame 6.

[0025] It should be noted that the cylindrical structure of the connecting pile 1 ensures sufficient structural strength and stability in the sandy soil, preventing tilting or damage due to external forces or sand movement. The at least four water inlets 101 evenly opened around the circumference allow water to enter the vortex separation chamber 102 evenly from multiple tangential directions, which is conducive to forming a stable and efficient vortex. The vortex separation chamber 102 adopts a frustum-shaped cavity design with a larger top and a smaller bottom, which can guide the water to rotate and accelerate during downward movement, using centrifugal force to achieve sand-water separation. The V-shaped groove structure of the frame 6 (groove depth 3cm-5cm, wall thickness 2mm-4mm, groove width 8cm-15cm) can not only effectively collect rainwater and dew, but its structural strength is also sufficient to support the water collection net 7 above and resist wind and sand erosion.

[0026] Another embodiment based on the cyclone separation chamber 102: a spiral guide rib is added inside the cyclone separation chamber 102 so that the cyclone separation chamber 102 can form a stable cyclone even at low flow rates, thereby improving the efficiency of sediment separation and reducing the sensitivity to small water flows.

[0027] Refer to the instruction manual appendix Figure 4 The wall thickness of the connecting pile 1 is 3mm-5mm, the height is 40cm-60cm, and the diameter is 15cm-25cm. A water storage pipe 2 is fixedly connected inside the connecting pile 1. A filter membrane 3 is fixedly connected to the bottom of the water storage pipe 2. A sleeve 5 is fixedly connected to the outer wall of the connecting pile 1. Several connecting pipes 4 are fixedly connected between the sleeve 5 and the water storage pipe 2. Several seepage holes 501 are opened on the wall of the sleeve 5.

[0028] It should be noted that the water storage pipe 2, as the core water storage unit, is located at the central axis of the connecting pile 1, which is conducive to structural stability and water collection. The filter membrane 3 is sealed at the bottom of the water storage pipe 2, which can effectively prevent sand particles from entering the water storage system and ensure the cleanliness of the stored water. The sleeve 5 is connected to the water storage pipe 2 through multiple connecting pipes 4, forming a distributed water transport network. The densely opened seepage holes 501 (hole diameter 0.1mm-0.5mm) on the sleeve 5 allow the stored clean water to slowly seep out, directly moistening the surrounding sand and providing a continuous water supply for the plant roots. At the same time, the small hole diameter can effectively prevent sand and soil from backflowing and clogging the system.

[0029] Another embodiment based on sleeve 5: Sleeve 5 is improved into a gradient degradation structure of three-layer composite material. The outer layer (degrades in 1-2 years) provides initial support, the middle layer (degrades in 3-5 years) stabilizes water permeability, and the inner layer (more than 5 years) maintains the structure in the long term. The supporting role of sleeve 5 iterates synchronously with the growth and stabilization process of the plant, and is eventually completely replaced by the plant root system, realizing a seamless transition from "engineering structure" to "ecosystem" without any residue.

[0030] Refer to the instruction manual appendix Figure 4 The angle between the frustum side of the cyclone separation chamber 102 and the vertical direction is 10°-15°, and its lower end is smoothly connected to the sand discharge hole 103, which has a diameter of 5mm-10mm.

[0031] It should be noted that the angle between the side of the cone of the cyclone separation chamber 102 and the vertical direction is set to 10°-15°. This angle range is the result of fluid dynamics optimization. It can ensure that the water flow has enough space to rotate and form a strong centrifugal force, and also ensure that the separated sand particles can slide smoothly down the cone surface to avoid deposition and blockage. The diameter of the sand discharge hole 103 is designed to be 5mm-10mm and smoothly connected to the lower end of the cyclone separation chamber 102. This size is sufficient to allow the sand particles separated by centrifugal force to be discharged smoothly under the action of gravity. At the same time, the smooth connection can minimize the flow resistance and prevent the sand particles from accumulating at the sand discharge port.

[0032] Refer to the instruction manual appendix Figure 5 The water collection net 7 is woven from composite fibers with a biomimetic hydrophilic-hydrophobic spaced microstructure on the surface. The diameter of the single filament of the water collection net 7 is 0.1mm-0.3mm, the mesh size is 0.5mm-2mm, and the laying height of the water collection net 7 is 10cm-20cm higher than the upper edge of the frame 6.

[0033] It should be noted that the water collection net 7 is woven with special composite fibers. Its biomimetic hydrophilic-hydrophobic microstructure can efficiently capture water vapor (such as morning dew and fog droplets) in the air and cause it to condense and gather. The combination of single filament diameter of 0.1mm-0.3mm and mesh aperture of 0.5mm-2mm ensures sufficient mechanical strength and water collection surface area, while also facilitating the condensation and dripping of water droplets. The laying height is 10cm-20cm higher than the upper edge of the frame 6, which allows the water collection net 7 to be fully exposed in the near-ground airflow layer, maximizing contact with and capture of water vapor, while avoiding burial or damage by wind and sand.

[0034] In specific embodiments, the composite fiber can be a biomimetic spider silk composite fiber, a metal-based composite fiber, or a Janus bi / multilayer composite fiber. Specifically, the biomimetic spider silk composite fiber is prepared using gelatin or polyvinyl alcohol as the spindle joint and PVDF (polyvinylidene fluoride) / PS (polystyrene) as the hydrophobic material as the fiber matrix; the metal-based composite fiber is prepared using copper mesh / stainless steel mesh as the metal substrate, Cu(OH)2 as the hydrophilic microneedles, and PVDF as the hydrophobic nanofiber membrane; the Janus bi / multilayer composite fiber is prepared using PVDF-TrFE (polyvinylidene fluoride-trifluoroethylene copolymer) or PTFE (polytetrafluoroethylene, Teflon) as the hydrophobic layer and PAN (polyacrylonitrile) or PA6 (polyamide 6, nylon 6) as the hydrophilic layer.

[0035] Refer to the instruction manual appendix Figure 6 Several guide grooves 601 are provided on the V-shaped groove sidewall of the frame 6. The cross-section of the guide groove 601 is arc-shaped, with a depth of 2mm-4mm and a width of 3mm-6mm.

[0036] It should be noted that the guide channel 601 opened on the V-shaped groove sidewall of the frame 6 has an arc-shaped cross-section (depth 2mm-4mm, width 3mm-6mm) that conforms to the characteristics of fluid mechanics. It can effectively guide the rainwater or water dripping from the water collection network that flows into the V-shaped groove, so that it flows smoothly along the guide channel 601 towards the nearest connecting pile 1. The presence of the guide channel 601 significantly improves the water collection and guiding efficiency of the frame 6, ensuring that precious water resources are effectively collected and transported to the water storage system, and reducing ineffective evaporation or overflow loss on the surface of the frame.

[0037] Refer to the instruction manual appendix Figure 4 The water storage pipe 2 is a round pipe that is vertically placed at the center axis of the connecting pile 1. The diameter of the water storage pipe 2 is 5cm-8cm and the wall thickness is 1mm-2mm. The filter membrane 3 is a composite membrane of superhydrophilic surface layer and microporous filter layer, which covers and seals the bottom end of the water storage pipe 2.

[0038] It should be noted that the design of the water storage pipe 2 with a diameter of 5cm-8cm and a wall thickness of 1mm-2mm is to save materials and reduce the overall structural weight while ensuring sufficient water storage capacity and structural rigidity. It is placed vertically on the central axis of the connecting pile 1, which is conducive to the even distribution of water flow through the connecting pipe 4. The filter membrane 3 adopts a composite structure of superhydrophilic surface layer and microporous filter layer. The superhydrophilic surface layer can quickly absorb water, while the microporous filter layer can accurately intercept fine sand particles and impurities. This dual protection ensures the cleanliness of the water entering the water storage pipe 2 and prevents system blockage.

[0039] Refer to the instruction manual appendix Figure 3 The sleeve 5 has a cylindrical porous structure with a wall thickness of 2mm-3mm, a diameter of 20cm-30cm, a height of 20cm-30cm, and a seepage hole 501 with a diameter of 0.1mm-0.5mm.

[0040] It should be noted that the structural parameters of sleeve 5 (wall thickness 2mm-3mm, diameter 20cm-30cm, height 20cm-30cm) give it a large volume and surface area, providing a wide seepage area. The large diameter and height allow it to affect a larger area of ​​sandy soil wetting zone. The wall thickness of 2mm-3mm ensures the durability of sleeve 5. The 0.1mm-0.5mm diameter of the seepage hole 501 is the key to achieving slow seepage (i.e., "drip irrigation" effect). This size can ensure that water molecules seep out slowly under capillary action, and can also effectively block most sand particles, maintaining the long-term unobstructed flow of the seepage channel.

[0041] Refer to the instruction manual appendix Figure 3 The connecting pipe 4 is a flexible capillary tube with an inner diameter of 3mm-5mm. The inlet end of the connecting pipe 4 is connected to the side wall of the water storage pipe 2, and the outlet end of the connecting pipe 4 is connected to the sleeve 5.

[0042] It should be noted that the connecting pipe 4 uses a flexible capillary tube with an inner diameter of 3mm-5mm. This inner diameter is conducive to using capillary action to assist in the transportation of water from the water storage pipe 2 to the sleeve 5. Even when the water level and pressure are low, water flow can be maintained. Its flexibility allows it to adapt to the relative positional deviation between the connecting pile 1 and the sleeve 5 during installation, which facilitates construction and can buffer the stress caused by the small deformation that may occur in the sand, thereby improving the reliability and durability of the system.

[0043] Working principle: The frame 6 installed between adjacent connecting piles 1 and the water collection net 7 above it serve as a primary collection system. Firstly, it captures mist, dew, or rainwater from the air. The water collection net 7, with its biomimetic hydrophilic-hydrophobic microstructure, efficiently condenses water vapor into droplets, which fall into the V-shaped groove of the frame 6 below. The water flowing into the V-groove is then guided by the guide channels 601 on its sidewall and finally enters the vortex separation chamber 102 inside the tangential inlet 101 at the top of the connecting pile 1. The water then rotates at high speed in the frustum-shaped vortex separation chamber 102. Under centrifugal force, the sediment is thrown against the cavity wall and slides down the conical surface, eventually being actively discharged from the system through the sand discharge hole 103 at the bottom. At the same time, the water that has been preliminarily purified by centrifugation flows downward in the central low-pressure zone, penetrates the filter membrane 3, and enters the water storage pipe 2 in the center for storage. The clean water stored in the water storage pipe 2 is transported to the sleeve 5 buried in the sand through several connecting pipes 4. Finally, the water slowly and evenly seeps out through the densely distributed seepage holes 501 on the sleeve 5 wall, directly moistening the soil in the plant root zone, thus completing the entire process of water collection, purification, and irrigation while fixing the sand.

[0044] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A water-collecting, grid-like sand-fixing and grass-planting structure, characterized in that: The system includes a connecting pile (1), which is a vertically arranged cylinder. At least four water inlets (101) are evenly opened along the circumference of the top side wall of the connecting pile (1). A sand discharge hole (103) is opened at the center of the bottom of the connecting pile (1). A vortex separation chamber (102) is provided inside the connecting pile (1) and runs vertically through it. The vortex separation chamber (102) is a frustum-shaped cavity with a larger top and a smaller bottom. All water inlets (101) are connected to the upper part of the vortex separation chamber (102) along the tangential direction of the connecting pile (1). A frame (6) is fixedly connected between adjacent connecting piles (1). The cross-section of the frame (6) is a V-shaped groove structure with an upward opening. The groove depth is 3cm-5cm, the wall thickness is 2mm-4mm, and the groove width is 8cm-15cm. A water collection net (7) is fixedly connected to the upper surface of the frame (6).

2. The water-collecting grid-like sand-fixing and grass-planting structure according to claim 1, characterized in that: The wall thickness of the connecting pile (1) is 3mm-5mm, the height is 40cm-60cm, and the diameter is 15cm-25cm. A water storage pipe (2) is fixedly connected inside the connecting pile (1). A filter membrane (3) is fixedly connected to the bottom of the water storage pipe (2). A sleeve (5) is fixedly connected to the outer wall of the connecting pile (1). Several connecting pipes (4) are fixedly connected between the sleeve (5) and the water storage pipe (2). Several seepage holes (501) are opened on the wall of the sleeve (5).

3. The water-collecting grid-like sand-fixing and grass-planting structure according to claim 1, characterized in that: The angle between the frustum side of the cyclone separation chamber (102) and the vertical direction is 10°-15°, and its lower end is smoothly connected to the sand discharge hole (103). The diameter of the sand discharge hole (103) is 5mm-10mm.

4. The water-collecting grid-like sand-fixing and grass-planting structure according to claim 1, characterized in that: The water collection net (7) is woven from composite fibers with a biomimetic hydrophilic-hydrophobic spaced microstructure on the surface. The diameter of the single filament of the water collection net (7) is 0.1mm-0.3mm, the mesh size is 0.5mm-2mm, and the laying height of the water collection net (7) is 10cm-20cm higher than the upper edge of the frame (6).

5. The water-collecting grid-like sand-fixing and grass-planting structure according to claim 1, characterized in that: Several guide grooves (601) are provided on the V-shaped groove sidewall of the frame (6). The cross-section of the guide groove (601) is arc-shaped, with a depth of 2mm-4mm and a width of 3mm-6mm.

6. The water-collecting grid-like sand-fixing and grass-planting structure according to claim 2, characterized in that: The water storage pipe (2) is a round pipe that is vertically placed at the center axis of the connecting pile (1). The diameter of the water storage pipe (2) is 5cm-8cm and the wall thickness is 1mm-2mm. The filter membrane (3) is a composite membrane of super-hydrophilic surface layer and microporous filter layer, which covers and seals the bottom end of the water storage pipe (2).

7. The water-collecting grid-like sand-fixing and grass-planting structure according to claim 2, characterized in that: The sleeve (5) is a cylindrical porous structure with a wall thickness of 2mm-3mm, a diameter of 20cm-30cm, a height of 20cm-30cm, and a pore diameter of 0.1mm-0.5mm for the seepage hole (501).

8. A water-collecting grid-like sand-fixing and grass-planting structure according to claim 6, characterized in that: The connecting pipe (4) is a flexible capillary tube with an inner diameter of 3mm-5mm. The inlet end of the connecting pipe (4) is connected to the side wall of the water storage pipe (2), and the outlet end of the connecting pipe (4) is connected to the sleeve (5).

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