Modular greening device for ecological restoration

Abstract

The invention discloses a modular greening device for ecological restoration, and relates to the technical field of greening devices for new energy construction, the modular greening device for ecological restoration comprises a plurality of fan blade windproof assemblies arranged on the periphery of plants in a surrounding mode, and the fan blade windproof assemblies comprise first-stage fan blades, second-stage fan blades and ground anchor rods; the first-stage fan blade and the second-stage fan blade are coaxially supported on the ground anchor rod, the first-stage fan blade is located above the second-stage fan blade, the first-stage fan blade is used for generating upward first spiral wind, the second-stage fan blade is used for generating downward second spiral wind, and the wind direction is guided and the wind power is dispersed through the fan blade windproof assembly. The destructive power of the strong wind which directly impacts the plants in the constant flow direction originally is greatly reduced, the strong wind of the wind power plant is prevented from directly impacting the plants, the original kinetic energy of the strong wind is weakened, the flow track is changed, the physical damage of the strong wind to the plants is reduced, the vegetation survival rate is improved, the ecological restoration process is accelerated, and extra energy consumption is not needed. The method has economical efficiency and sustainability.

Description

Technical Field

[0001] This invention relates to the field of greening devices for new energy construction, and more specifically, to a modular greening device for ecological restoration. Background Technology

[0002] The development of new energy sources is an important way to promote energy structure transformation and environmental protection and improvement. However, the rapid development of new energy construction inevitably has an impact on the ecological environment. For example, the construction of wind farms can damage soil structure and properties, exacerbating soil erosion. Excavation and backfilling operations during construction can damage soil structure, harm the surface and vegetation, and lead to soil erosion.

[0003] Wind farms are mostly located in high-altitude, windy, arid, or frigid areas, such as grasslands, deserts, and mountains. In wind farm ecological restoration projects, wind-related technical issues persist throughout the entire restoration cycle. These issues involve both the direct damage of extreme winds to vegetation and ecological problems such as soil erosion and community degradation caused by wind. Existing windbreaks on the leeward side of the windward side can create strong turbulence due to airflow separation, leading to a sudden increase in local wind speed and exacerbating root erosion and branch breakage of plants behind the windbreak. Existing devices such as windbreaks and wind shields are mostly fixed structures. The wind-resistant design is based on a single wind speed threshold, but the wind speed faced by actual wind farms is dynamic. Existing devices are difficult to adapt to changes in wind speed. At low wind speeds, they are prone to excessive obstruction, resulting in insufficient ventilation for vegetation. In extreme winds, they are insufficiently protected, and the wind force will directly impact the rigid structure. Furthermore, the wind direction of a wind farm is not fixed. Existing fixed structures are often arranged along a single wind direction, which is difficult to adapt to changes in the wind direction of the wind farm. In the direction where the fixed structure is not protected, the vegetation will directly bear the impact of the wind force, and the vegetation may be blown down and the roots exposed.

[0004] In the strong winds of wind farms, high-speed airflow makes it difficult for existing fog collection devices to collect moisture. Strong winds easily re-entrain condensed water droplets into the air, resulting in a significant decrease in droplet capture and retention rates. Furthermore, the unpredictable wind direction means that existing fog collection devices, often single-layered nets, cannot consistently face the oncoming airflow, leading to a sharp reduction in the effective windward area. This ultimately results in large fluctuations and poor stability in fog collection efficiency, failing to meet the actual water resource collection needs of wind farms. Current wind farm ecological restoration relies on manual seed or fertilizer application, but manual application is limited by physical strength and mobility, making it unsuitable for large-scale restoration needs and extremely inefficient. Summary of the Invention

[0005] One objective of this invention is to provide a modular greening device for ecological restoration. This device comprises several fan-shaped windbreak components surrounding the plant, including primary and secondary fan blades. The primary fan blades guide strong winds upward away from the plant canopy, generating an upward first spiral wind. The secondary fan blades guide strong winds downward away from the plant roots, generating a downward second spiral wind. By guiding the wind direction and dispersing the wind force through these fan-shaped windbreak components, the destructive force of strong winds that would normally directly impact the plant is greatly reduced. This prevents strong winds from wind farms from directly impacting the plant, lowers the wind speed around the plant, reduces transpiration and water loss, and promotes plant growth. It offers the dual benefits of wind protection and optimized growth conditions, requires no additional power, is suitable for various plants and windy environments, and is highly practical and economical.

[0006] This objective is achieved using the following technical solution:

[0007] A modular greening device for ecological restoration includes several fan-shaped windproof components arranged around the periphery of plants. The fan-shaped windproof components include primary fan blades, secondary fan blades, and ground anchors. The primary fan blades and secondary fan blades are coaxially supported on the ground anchors, and the primary fan blades are located above the secondary fan blades.

[0008] When strong winds blow past the windproof assembly of the fan blades, the first-stage fan blades rotate to generate an upward spiral wind. The strong winds in wind farms are primarily horizontal airflow. When the strong winds blow onto the blades of the first-stage fan blades, the tilted blades push part of the airflow upwards, converting some of the kinetic energy of the strong winds into the power to rotate the fan blades. Another portion is guided by the tilted blade surface to form an upward spiral wind, which guides the near-horizontal strong winds blowing towards the plants away from the plant canopy. The remaining airflow that is not guided away becomes dispersed and disordered due to the disturbance of the spiral winds, preventing it from forming a concentrated impact force and thus reducing the direct impact of the strong winds on the plants, protecting their growth. The second-stage fan blades rotate to generate a downward spiral wind. Strong winds that would normally flow close to the ground and directly impact the soil around the plant roots would cause the topsoil to be blown away and the roots to be exposed. The second spiral wind generated by the wind blowing the secondary fan blades is directed downwards, directing this near-horizontal strong wind towards the area below the secondary fan blades. Some of the airflow is guided into a chaotic flow by the tilted blades of the secondary fan blades, while some of the airflow impacts the ground below the secondary fan blades, buffering the wind force blowing towards the plants. This results in the dissipation of wind energy and effectively reduces the wind force that directly impacts the base of the plant stems parallel to the ground surface. This creates a low-wind-speed protection zone around the roots, preventing the loss of topsoil and root exposure caused by sand carried by strong horizontal winds. The soil's water and fertilizer retention capacity is significantly improved, avoiding damage to the plants from strong winds with a constant direction. This greatly reduces the destructive force of strong winds on plants in wind farms, reducing the wind force that directly impacts the plants. The plants can still carry out photosynthesis and growth normally in the strong wind environment of wind farms, effectively solving the problem of wind damage restricting the growth of plants in ecological restoration.

[0009] Compared to existing devices, current wind farm greening devices are ill-suited to the strong winds of wind farms. Existing plant windbreaks are mostly fixed structures such as wind shields and wind nets, which can only block frontal winds and offer almost no protection against oblique or lateral winds. Winds can flow around the sides of the structure, creating air leakage channels on the leeward side of the plants, directly impacting the plant roots or the sides of the canopy. Existing devices are difficult to adapt to changes in wind speed, excessively blocking winds at low wind speeds, resulting in insufficient ventilation for vegetation, and insufficient protection during extreme winds. Furthermore, existing windbreak devices and drip irrigation devices are independent of each other, failing to utilize the windbreak structure to assist drip irrigation, and failing to optimize plant wind resistance through irrigation.

[0010] This invention utilizes a series of fan-shaped windbreak components surrounding the plant. When strong winds from a wind farm blow past these components, the first-stage fan blades deflect the wind away from the plant canopy, preventing it from directly impacting the branches and leaves. The second-stage fan blades direct the strong winds towards the area below the second-stage fan blades. This avoids direct impact on the root soil, reducing erosion of the topsoil, and preventing the plant roots from drying out or being damaged due to soil exposure caused by wind erosion. Simultaneously, the upward guidance of the first-stage fan blades and the downward guidance of the second-stage fan blades create a slight low pressure in the area between them. This low pressure actively absorbs moisture from the surrounding air, causing it to accumulate continuously in the area. A mist-collecting component is positioned between the first and second-stage fan blades. The fan blades themselves block some sunlight, accelerating moisture condensation. By utilizing the airflow characteristics guided by the first and second-stage fan blades, conditions for moisture accumulation are created, adapting to the ecological restoration needs of wind farms characterized by high winds and low water levels. In addition, the size of the spraying component is controlled by wind speed. At low wind speeds, the rotation speed is slow, the channel opening is small, and the spraying area is small. Combined with the slight lifting effect of the upward airflow from the first-stage fan blades, the fertilizer or seeds are first lifted upwards in a small area and then evenly settled. At high wind speeds, the channel opening is large, the spraying area is large, and the upward airflow can carry more materials to a certain height. The wind power drives the first-stage fan blades to rotate for spraying, avoiding the time and labor-intensive process of manual spraying and improving the uniformity of material spraying.

[0011] Furthermore, the ratio of the distance between adjacent fan blade windproof components to the diameter of the primary fan blade is 0.4-0.6, and the ratio of the distance between adjacent fan blade windproof components to the diameter of the secondary fan blade is 0.4-0.6. This ratio ensures seamless connection of the airflow guidance range of adjacent components, smooth transition of airflow, structural stability and economy, while reserving growth space for plants and not blocking most of the sunlight, thus meeting the needs of most ecological restoration stages.

[0012] Furthermore, the first-stage fan blade is 0.8-1m above the ground, and the second-stage fan blade is 0.3-0.5m above the ground. In wind farm ecological restoration, herbaceous plants and low shrubs are commonly planted. During the ecological restoration period, these plants gradually grow from seedlings to mature plants, with an average height of approximately 1.2-1.5m. This fan blade height is suitable for the mature height of most native shrubs and can cover the main wind-prone areas near the ground in the wind farm, achieving effective wind protection in common wind speed environments.

[0013] Furthermore, the plurality of fan-blade windproof components are arranged in an equilateral triangle, square, or regular hexagonal array along the outer perimeter of the plant. Through the symmetry of the regular geometric shape, uniform windproofing is achieved around the plant, ensuring that winds from any direction around the plant can be guided by the fan-blade components, avoiding localized strong wind zones caused by a cluttered layout.

[0014] Furthermore, it also includes a mist-collecting drip irrigation assembly coaxially mounted on the ground anchor. The mist-collecting drip irrigation assembly includes a mist-collecting unit and a drip irrigation unit. A mist-collecting unit is located between the primary and secondary fan blades. When the primary fan blades guide air upwards and the secondary fan blades guide air downwards, the guiding effect of the upper and lower fan blades creates a slight low pressure, which actively absorbs fog and water vapor from the surrounding air. The mist-collecting unit is installed here, using the low pressure and gentle airflow to allow water vapor to continuously accumulate. The collected water can be directly circulated through the drip irrigation unit to the soil at the plant roots, solving the water replenishment problem in wind farms with drought and low rainfall. The mist-collecting unit includes an outer mist-collecting net, a middle mist-collecting net, an inner mist-collecting net, and a flow guide. The middle mist-collecting net is fitted inside the outer mist-collecting net, and the inner mist-collecting net is fitted inside the middle mist-collecting net. Within the fog netting system, a nested design allows the outer fog-collecting net to buffer the impact of strong winds, preventing the middle fog-collecting net from being directly impacted by high-speed airflow. The primary fan blades and the outer fog-collecting net also block some strong sunlight. The tight nesting reduces the evaporation of fog droplets during transmission, allowing water vapor to reach the middle and inner layers and condense. The diameter of the outer fog-collecting net is smaller than that of the first or second fan blade, ensuring the fog-collecting unit is completely within the low-pressure zone created by the fan blades, avoiding direct interference from strong winds and sunlight. The flow guide delivers water from the outer, middle, and inner fog-collecting nets to the drip irrigation unit, which directly delivers water to the soil surrounding the plant roots. The water collected by the fog-collecting unit effectively promotes vegetation growth and accelerates the ecological restoration process.

[0015] Furthermore, the distance between the outer and middle fog collecting nets is 5-10 cm, and the distance between the middle and inner fog collecting nets is also 5-10 cm. If the distance is too small, the airflow will not have enough space to slow down, which may cause the high-speed airflow to disperse the fine fog. If the distance is too large, water vapor will evaporate between the layers, which is not conducive to water vapor collection. The outer fog collecting net has a mesh size of 8-12, which is conducive to allowing the fog-laden airflow to smoothly enter the inner layer and intercepting larger fog droplets in the air. At the same time, the coarse mesh structure buffers the impact force of the airflow. The middle fog collecting net has a mesh size of 30-40. At this time, the airflow intercepted by the outer layer is relatively gentle, and the fine mesh can accurately capture the small fog droplets in the decelerated airflow. The inner fog collecting net has a mesh size of 10-15, which can intercept the residual fog droplets that were not captured in the middle layer. Through the gradient interception of coarse and fine meshes, the characteristics of water vapor transport are adapted, maximizing the capture of fog droplets while ensuring smooth airflow.

[0016] Furthermore, the flow guide includes a ground anchor rod and a flow guide plate. The ground anchor rod has a hollow tubular structure and through holes in its tube wall. The flow guide plate is located at the bottom of the outer, middle, and inner fog collecting nets. After the three fog collecting nets capture water vapor, the condensate will naturally slide down the net fibers due to gravity. The collected water will converge towards the center under the action of gravity and flow into the ground anchor rod pipe through the through holes, thus entering the water storage tank.

[0017] Furthermore, the drip irrigation unit includes a water storage tank, a flow valve, and drip irrigation branch pipes. The water storage tank is located below the secondary fan blades, temporarily storing the water collected by the mist collection component and short-term precipitation. Simultaneously, the water storage tank's location below the fan blades allows it to shield the wind farm from strong sunlight. The airflow generated by the rotating fan blades continuously sweeps across the surface of the water storage tank, carrying away heat generated by residual sunlight or ambient heat, thus providing water for the drip irrigation unit. The water storage tank is connected to the ground anchor pipe. A flow valve is located at the bottom of the water storage tank, dynamically adjusting the water flow rate and cycle according to the plant's water requirements to avoid water waste. Below the flow valve is a multi-way valve, connected to the ground anchor pipe and then to the drip irrigation branch pipe. Drip irrigation pipes are evenly distributed on the drip irrigation branch pipe, connecting to flexible hoses to directly deliver water to the area around the main root system, improving vegetation survival rates.

[0018] Furthermore, a spraying component is provided above the primary fan blade. The spraying component is fixedly connected to the primary fan blade and rotates synchronously with it. The spraying component includes a top plate, a bottom plate, and a side wall connecting the bottom plate and the top plate. The side wall has several channels, and the bottom plate has several rotating opening and closing units. When the primary fan blade is blown by the wind, causing the spraying component to rotate, the gap between the rotating opening and closing units increases. The seeds or fertilizer stored inside are thrown out along the channels under the action of centrifugal force without additional power. Moreover, the upward airflow above the primary fan blade lifts the material and prolongs its diffusion time in the air. At low wind speeds, the material falls evenly over a small area under the action of centrifugal force. At high wind speeds, the airflow, combined with centrifugal force, carries the seeds or fertilizer to a farther area, improving the uniformity of material spraying.

[0019] Furthermore, the rotating opening and closing unit includes several baffles and several limiting grooves. The limiting grooves are arranged in a circular array on the base plate. A connecting block and a spring are provided in each limiting groove. The connecting block and the spring are connected, and the connecting block can slide within the limiting groove. The connecting block is connected to the baffles. When the primary fan blade is stationary, the baffles form a closed area. When the primary fan blade rotates, the spring is stretched by centrifugal force, and the baffles move away from each other, creating gaps that allow fertilizer or seeds to be scattered. When the wind speed is low, the primary fan blade rotates slowly. When the centrifugal force on the connecting block is small, the spring only stretches slightly, and the gap in the baffle is small, the amount of material being sprayed is small, thus avoiding material accumulation due to insufficient wind power. When the wind speed is high, the fan blade speed increases, the centrifugal force on the connecting block increases, the spring is stretched, and the connecting block slides outward along the limiting groove, making the gap in the baffle larger. At this time, the amount of material being sprayed increases, and the stronger centrifugal force generated by the high speed, combined with the high wind speed, can throw seeds or fertilizers to a farther area, achieving large-area coverage without the need for manual adjustment, improving the uniformity of spraying, and solving the problems of low efficiency, time and labor consumption of manual spraying.

[0020] Compared with existing technologies, the modular greening device for ecological restoration provided by this invention has the following beneficial effects:

[0021] 1. The present invention provides a modular greening device for ecological restoration. The first-stage fan blades of the windproof component, driven by strong winds from a wind farm, generate an upward spiral wind, while the second-stage fan blades generate a downward spiral wind. This guides the wind direction and disperses the wind force, greatly reducing the destructive force of strong winds that would otherwise directly impact plants. This avoids direct impact of strong winds from the wind farm on plants, reduces wind speed around the plants, improves vegetation survival rate, reduces surface wind erosion, and accelerates the ecological restoration process. It requires no additional energy consumption and is economical and sustainable.

[0022] 2. The present invention provides a modular greening device for ecological restoration. Through the fog collection unit between the primary and secondary fan blades, a slight low pressure is formed due to the airflow guiding effect of the upper and lower fan blades, which actively adsorbs fog and water vapor in the surrounding air. The nested design of the three-layer fog collection net solves the problem of water vapor collection in strong wind environments. Combined with the fan blade shading and the tight space, the evaporation of fog droplets during interlayer transmission is reduced. The fog collection drip irrigation component provides continuous water replenishment for vegetation.

[0023] 3. The present invention provides a modular greening device for ecological restoration. Through the spraying component that rotates with the primary fan blade, the size of the opening and closing of the rotating opening and closing component and the range of spraying are controlled by the magnitude of the centrifugal force generated by the spraying component driven by the wind. This achieves automatic adjustment of the mechanical structure, improves the uniformity of spraying, and solves the problems of low efficiency, time and labor consumption of manual spraying. Attached Figure Description

[0024] The accompanying drawings, which are provided to further illustrate embodiments of the invention and constitute a part of this invention, are not intended to limit the scope of the invention.

[0025] Figure 1 This is a schematic diagram of the windproof component structure of the fan blade in this invention;

[0026] Figure 2 This is an overall schematic diagram of several fan blade windproof component units arranged in an equilateral triangle in this invention;

[0027] Figure 3 This is a schematic diagram of the overall arrangement of several fan blade windproof component units in a square in this invention;

[0028] Figure 4 This is an overall schematic diagram of several fan blade windproof component units arranged in a regular hexagon in this invention;

[0029] Figure 5 This is a top view of the fog collection component in this invention;

[0030] Figure 6 This is a side cross-sectional view of the fog collection component in this invention;

[0031] Figure 7 This is a schematic diagram of the external structure of the spraying component in this invention;

[0032] Figure 8 This is a schematic diagram of the internal structure of the spraying component when it is not rotating in this invention;

[0033] Figure 9 This is a top view of the internal structure of the spraying component when it rotates in this invention;

[0034] Among them, 1-first-stage fan blade, 2-second-stage fan blade, 3-ground anchor rod, 4-ground anchor head, 5-guide plate, 6-outer layer mist collecting net, 7-middle layer mist collecting net, 8-inner layer mist collecting net, 9-through hole, 10-water storage tank, 11-flow valve, 12-five-way valve, 13-drip irrigation branch pipe, 14-drip irrigation pipe, 15-top plate, 16-bottom plate, 17-side wall, 18-channel, 19-baffle, 20-connecting block, 21-spring, 22-limiting groove. Detailed Implementation

[0035] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other.

[0036] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0037] Example 1

[0038] like Figure 1 The illustrated modular greening device for ecological restoration includes several fan-shaped windbreak components arranged around the periphery of plants. Each fan-shaped windbreak component includes a primary fan blade 1, a secondary fan blade 2, and a ground anchor 3. The primary fan blade 1 is located above the secondary fan blade 2. The primary fan blade 1 and the secondary fan blade 2 are coaxially supported on the ground anchor 3. The primary fan blade 1 or the secondary fan blade 2 is connected to the ground anchor 3 using rolling bearings. The ground anchor 3 is fixedly connected to a ground anchor head 4, which has a spiral structure and can be vertically drilled into the ground through rotation, thus firmly fixing the ground anchor 3 to the ground.

[0039] When strong winds pass through the wind farm and the wind speed exceeds 3 m / s, the first-stage fan blade 1 rotates under the influence of the airflow. The first-stage fan blade 1 has three blades, each with a positive twist angle. The blades gradually tilt upwards along the rotation axis from the root to the tip. When strong winds blow perpendicular to the axial direction, the blades of the first-stage fan blade 1 rotate in the positive direction under the force of the wind. The tilted blade surface guides the horizontal airflow upwards, generating an upward spiral wind. The second-stage fan blade 2 also rotates under the influence of the wind. The second-stage fan blade 2 has three blades. The blades of the fan blades have a reverse twist angle, and the blades gradually tilt downwards from the blade root to the blade tip along the rotation axis. When a strong wind blows perpendicular to the axis, the blades of the secondary fan blade 2 rotate in the opposite direction under the action of the wind force. The tilted blade surface guides the horizontal airflow downwards. The rotation of the secondary fan blade 2 generates a downward second spiral wind. The first spiral wind and the second spiral wind guide the wind force blowing horizontally towards the plants upwards or downwards. By guiding the wind direction and dispersing the wind force, it is difficult for strong winds to produce concentrated impact force on the plants. At the same time, it also reduces the wind force rushing towards the plants and improves the survival rate of vegetation in the wind farm.

[0040] In some embodiments, the ratio of the distance between adjacent fan blade windproof components to the diameter of the primary fan blade 1 is 0.4-0.6, the ratio of the distance between adjacent fan blade windproof components to the diameter of the secondary fan blade 1 is 0.4-0.6, the height of the primary fan blade 1 is 0.8-1m, and the height of the secondary fan blade 2 is 0.3-0.5m.

[0041] In some embodiments, such as Figure 2 As shown, the plurality of fan blade windproof components are arranged in an equilateral triangle array, the plant is located in the central area of ​​the equilateral triangle array, and the fan blade windproof components are located at array points. In this embodiment, the diameter of the first-level fan blade 1 is 1m, the diameter of the second-level fan blade 2 is 1m, the distance between adjacent fan blade windproof components is 2.5m, and the distance between the plant and the center of the fan blade windproof component is greater than 0.7m.

[0042] In some embodiments, such as Figure 3 As shown, the plurality of fan-blade windproof components are arranged in a square array, the plant is located in the central area of ​​the square array, and the fan-blade windproof components are located at array points. In this embodiment, the diameter of the first-level fan blade 1 is 1.2m, the diameter of the second-level fan blade 2 is 1.2m, the distance between adjacent fan-blade windproof components is 3m, and the distance between the plant and the center of the fan-blade windproof component is greater than 0.8m.

[0043] In some embodiments, such as Figure 4As shown, the plurality of fan-blade windproof components are arranged in a regular hexagonal array. The plant is located in the central area of ​​the regular hexagonal array, and the fan-blade windproof components are located at the array points. In this embodiment, the diameter of the first-level fan blade 1 is 1.5m, the diameter of the second-level fan blade 2 is 1.5m, the distance between adjacent fan-blade windproof components is 3.75m, and the distance between the plant and the center of the fan-blade windproof component is greater than 0.9m, forming a continuous windproof area.

[0044] Example 2

[0045] Based on Example 1, a laboratory low-speed wind tunnel test was set up. The ground anchor 3 was vertically fixed on the simulated soil base of the wind tunnel test section. The primary fan blade 1 and the secondary fan blade 2 were coaxially supported on the ground anchor 3. The diameter of the primary fan blade 1 was 1.2m, the diameter of the secondary fan blade 2 was 1.2m, and the distance between the windproof components of the adjacent fan blades was 3m.

[0046] like Figure 3 As shown, the fan blade windproof components are arranged in a square. In this embodiment, there are four fan blade windproof components. The fan blade windproof components are located at the four intersections of the square. The plant is located in the area surrounded by the fan blade windproof components. The distance between the plant and the center of the fan blade windproof components is greater than 0.8m.

[0047] A hot-wire anemometer is installed 0.5m in front of the fan blades. Four hot-wire anemometers are evenly arranged in place of plants in the area surrounded by the fan blade windproof component. A hot-wire anemometer is installed 0.5m behind the fan blades behind the area surrounded by the fan blade windproof component.

[0048] During testing, the four fan blade windproof components were fixed in the center of the wind tunnel beforehand, a hot-wire anemometer was set up, the wind tunnel was started, and the wind speed was adjusted to 1 m / s. The wind speed was calibrated using the hot-wire anemometer in front of the fan blades, and then segmented tests were conducted. The wind speed was uniformly increased from 1 m / s to 5 m / s. It was found that when the wind speed was about 3 m / s, either the first-stage fan blade 1 or the second-stage fan blade 2 started to rotate. The wind speed was adjusted to 5 m / s, 10 m / s, and 15 m / s. After running stably for 3 minutes, the parameters of the hot-wire anemometer at each point were recorded.

[0049] When the wind speed in the low-speed wind tunnel is 5 m / s, the wind speed in the area behind the fan blade windproof component is attenuated to 3.6 m / s, and the average wind speed in the area surrounded by the fan blade windproof component is 3.3 m / s. When the wind speed is 10 m / s, the wind speed in the area behind the fan blade windproof component is attenuated to 5.9 m / s, and the average wind speed in the area surrounded by the fan blade windproof component is 5.1 m / s. When the wind speed is 15 m / s, the wind speed in the area behind the fan blade windproof component is 8.1 m / s, and the average wind speed in the area surrounded by the fan blade windproof component is 7.3 m / s. The plants in the wind farm are mostly herbaceous and shrubby plants. The wind speed should not exceed 8 m / s for the plants to grow. Therefore, the wind speed that is attenuated by the fan blade windproof device can meet the needs of plant growth and avoid wind damage to plants and soil.

[0050] Example 3

[0051] Based on Examples 1 and 2, such as Figure 1 As shown, it also includes a mist-collecting drip irrigation assembly coaxially mounted on the ground anchor 3. The mist-collecting drip irrigation assembly includes a mist-collecting unit and a drip irrigation unit. A mist-collecting unit fixedly connected to the ground anchor 3 is provided between the primary fan blade 1 and the secondary fan blade 2. Figure 5 and Figure 6 As shown, the mist collection unit includes an outer mist collection net 6, a middle mist collection net 7, an inner mist collection net 8, and a flow guide. The middle mist collection net 7 is fitted inside the outer mist collection net 6, and the inner mist collection net 8 is fitted inside the middle mist collection net 7. The diameter of the outer mist collection net is smaller than the diameter of the first fan blade 1 or the second fan blade 2. The flow guide transports the water on the outer mist collection net 6, the middle mist collection net 7, and the inner mist collection net 8 to the drip irrigation unit.

[0052] In some embodiments, the distance between the outer fog collecting net 6 and the middle fog collecting net 7 is 5-10 cm, the distance between the middle fog collecting net 7 and the inner fog collecting net 8 is 5-10 cm, the mesh size of the outer fog collecting net 6 is 8-12 mesh, the mesh size of the middle fog collecting net 7 is 30-40 mesh, and the mesh size of the inner fog collecting net 8 is 10-15 mesh.

[0053] In some embodiments, the flow guiding component includes a ground anchor rod 3 and a flow guiding plate 5. The ground anchor rod 3 has a hollow tubular structure, and the tube wall of the ground anchor rod 3 has through holes 9. The flow guiding plate 5 is connected to the outer layer mist collecting net 6, the middle layer mist collecting net 7, and the inner layer mist collecting net 8. The flow guiding plate 5 is located at the bottom of the outer layer mist collecting net 6, the middle layer mist collecting net 7, and the inner layer mist collecting net 8. The water collected on the mist collecting net is left to the bottom of the mist collecting net by gravity, and finally flows from the flow guiding plate 5 through the through holes 9 into the pipe of the ground anchor rod 3, thereby entering the drip irrigation unit.

[0054] In some embodiments, the drip irrigation unit includes a water storage tank 10, a flow valve 11, and drip irrigation branch pipes 13. The water storage tank 10 is located below the secondary fan blades and is connected to the pipe of the ground anchor 3. Water collected by the mist collection net flows into the water storage tank 10 through the pipe of the ground anchor 3. The bottom of the water storage tank 10 is equipped with a flow valve 11, which allows for active on-demand water supply by adjusting the flow valve 11. A multi-pass valve is located below the flow valve 11. In this preferred embodiment, as shown... Figure 1 The diagram shows a five-way valve 12, which is connected to the pipe of the ground anchor 3. The five-way valve 12 is also connected to the drip irrigation branch pipe 13, which is connected to the five-way valve 12 of the adjacent drip irrigation unit. Drip irrigation pipes 14 are evenly arranged on the drip irrigation branch pipe 13. The drip irrigation pipes 14 are connected to flexible hoses, and the ends of the flexible hoses are connected to drip irrigation heads. The drip irrigation heads are located around the roots of the plants, so that the water collected by the mist is dripped to the roots of the plants.

[0055] Example 3

[0056] Based on Examples 1, 2, and 3, such as Figure 1 As shown, a spraying component is provided above the primary fan blade 1, and the spraying component rotates synchronously with the primary fan blade 1, as... Figure 7 and Figure 8 As shown, the throwing assembly includes a top plate 15, a bottom plate 16, and a side wall 17 connecting the bottom plate 15 and the top plate 16. The side wall 17 is provided with a plurality of channels 18, and the bottom plate 16 is provided with a plurality of rotating opening and closing units. When the first-stage fan blades rotate, the plurality of rotating opening and closing units cause the material to be thrown out.

[0057] In some embodiments, such as Figure 9 As shown, the rotating opening and closing unit includes several baffles 19 and several limiting grooves 22. The several limiting grooves 22 are arranged in a ring on the base plate 15. A connecting block 20 and a spring 21 are provided in the several limiting grooves 22. The connecting block 20 and the spring 21 are connected. The connecting block 20 can slide in the limiting groove 22. The connecting block 20 is connected to the several baffles 19. When the first-stage fan blade 1 is stationary, the several baffles 19 can form a closed area. When the first-stage fan blade 1 rotates, it drives the spraying component to rotate. The spring 21 is stretched by centrifugal force, causing the several baffles to separate. When the centrifugal force is small, the gap between the several baffles is small, less fertilizer or seeds are thrown out, and the coverage area is small. The greater the centrifugal force, the larger the gap between the several baffles, and the more fertilizer or seeds flow out. The higher the initial velocity of the material being thrown out, the more material is thrown out per unit time, and the larger the coverage area. At this time, the material is thrown out through the channel 19, which solves the problem of time-consuming and labor-intensive manual spraying and improves the uniformity of spraying.

[0058] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0059] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A modular greening device for ecological restoration, characterized in that, The fan-shaped windproof assembly comprises a first fan leaf (1), a second fan leaf (2) and a ground anchor rod (3), the first fan leaf (1) and the second fan leaf (2) are coaxially supported on the ground anchor rod (3), the first fan leaf (1) is located above the second fan leaf (2), the first fan leaf (1) is used for generating upward first spiral wind, the second fan leaf (2) is used for generating downward second spiral wind, and the first spiral wind and the second spiral wind are used for reducing the wind force on the plant. The ratio of the distance between the adjacent fan-shaped windproof assemblies to the diameter of the first fan leaf (1) is 0.4-0.6, and the ratio of the distance between the adjacent fan-shaped windproof assemblies to the diameter of the second fan leaf (1) is 0.4-0.

6.

2. The modular greenery device for ecological restoration of claim 1, wherein, The height of the first fan leaf (1) from the ground is 0.8-1m, and the height of the second fan leaf (2) from the ground is 0.3-0.5m.

3. The modular greenery device for ecological restoration of claim 1, wherein, The plurality of fan-shaped windproof assemblies are arranged in a regular triangle, a square or a regular hexagon array along the periphery of the plant.

4. The modular greenery device for ecological restoration of claim 1, wherein, The fog collecting and drip irrigation assembly coaxially arranged on the ground anchor rod (3) is further included, and the fog collecting and drip irrigation assembly comprises a fog collecting unit and a drip irrigation unit.

5. The modular greenery device for ecological restoration of claim 1, wherein, The fog collecting unit fixedly connected with the ground anchor rod (3) is arranged between the first fan leaf (1) and the second fan leaf (2), the fog collecting unit comprises an outer layer fog collecting net (6), a middle layer fog collecting net (7), an inner layer fog collecting net (8) and a flow guide piece, the middle layer fog collecting net (7) is sleeved in the outer layer fog collecting net (6), the inner layer fog collecting net (8) is sleeved in the middle layer fog collecting net (7), the diameter of the outer layer fog collecting net is smaller than the diameter of the first fan leaf (1) or the second fan leaf (2), and the flow guide piece is used for conveying water on the outer layer fog collecting net (6), the middle layer fog collecting net (7) and the inner layer fog collecting net (8) to the drip irrigation unit. The distance between the outer layer fog collecting net (6) and the middle layer fog collecting net (7) is 5-10cm, the distance between the middle layer fog collecting net (7) and the inner layer fog collecting net (8) is 5-10cm, the mesh number of the outer layer fog collecting net (6) is 8-12, the mesh number of the middle layer fog collecting net (7) is 30-40, and the mesh number of the inner layer fog collecting net (8) is 10-15.

6. The modular greenery device for ecological restoration of claim 5, wherein, The flow guide piece comprises the ground anchor rod (3) and a flow guide plate (5), the ground anchor rod (3) has a hollow tubular structure, a through hole (9) is formed in the pipe wall of the ground anchor rod (3), the flow guide plate (5) is arranged at the bottom of the outer layer fog collecting net (6), the middle layer fog collecting net (7) and the inner layer fog collecting net (8), the flow guide plate (5) is used for collecting water and guiding the water into the through hole (9), and the water entering the through hole (9) is conveyed to the drip irrigation unit through the pipeline of the ground anchor rod (3).

7. The modular greenery device for ecological restoration of claim 5, wherein, ​ 8. The modular greenery device for ecological restoration of claim 5, wherein, The drip irrigation unit comprises a water storage tank (10), a flow valve (11) and a drip irrigation branch pipe (13), the water storage tank (10) is arranged below the secondary fan blade, the water storage tank (10) is communicated with the pipeline of the ground anchor rod (3), the bottom of the water storage tank (10) is provided with the flow valve (11), the flow valve (11) is provided below with a multi-way valve, the multi-way valve is connected with the drip irrigation branch pipe (13), the drip irrigation branch pipe (13) is uniformly provided with a drip irrigation pipe (14), and the drip irrigation unit is used for supplementing plant moisture.

9. The modular greenery device for ecological restoration of claim 1, wherein, The first fan blade is provided with a throwing assembly above, the throwing assembly rotates synchronously with the first fan blade (1), the throwing assembly comprises a top plate (15), a bottom plate (16) and a side wall (17) connecting the bottom plate (15) and the top plate (16), a plurality of channels (18) are arranged on the side wall (17), a plurality of rotary opening and closing units are arranged on the bottom plate (16), and the plurality of rotary opening and closing units rotate to make the material be thrown out.

10. The modular greenery device for ecological restoration of claim 9, wherein, The rotary opening and closing unit comprises a plurality of baffles (19) and a plurality of limiting grooves (22), the plurality of limiting grooves (22) are arranged in an annular array on the bottom plate (15), the plurality of limiting grooves (22) are provided with a connecting block (20) and a spring (21) inside, the connecting block (20) and the spring (21) are connected, the connecting block (20) can slide in the limiting groove (22), the connecting block (20) is connected with the plurality of baffles (19), when the first fan blade (1) is static, the plurality of baffles (19) can surround a closed area, when the first fan blade (1) rotates, the spring (21) is elongated to make the plurality of baffles separate.

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