A rainwater harvesting and utilization device for highway engineering

Abstract

This invention relates to the technical field of rainwater harvesting and utilization, and discloses a rainwater harvesting and utilization device for highway engineering, including a drainage ditch and a rainwater storage tank. A water delivery component and a rainwater treatment component are installed between the drainage ditch and the rainwater storage tank. The water delivery component is used to collect rainwater flowing out of the drainage ditch; the rainwater treatment component is used to filter the rainwater flowing out of the drainage ditch. The water delivery component includes an inlet component, a treatment component, and a water control component. In this invention, by constructing a rainwater harvesting system, including the coordinated operation of components such as drainage ditches, water delivery components, rainwater treatment components, and rainwater storage tanks, rainwater on the highway surface can be collected and properly stored in the rainwater storage tank. In the current context of increasingly scarce water resources, this effective method of rainwater collection and storage realizes the resource utilization of rainwater. The collected rainwater can be used for non-potable purposes such as highway greening irrigation and road cleaning.

Description

Technical Field

[0001] This invention relates to the technical field of rainwater harvesting and utilization, and more particularly to a rainwater harvesting and utilization device for highway engineering. Background Technology

[0002] Rainwater harvesting and utilization is a technology and method for collecting, storing, and treating rainwater to achieve the rational use of water resources. It involves installing rainwater collection facilities, such as rainwater buckets and reservoirs, in areas like building rooftops, courtyards, and plazas to collect natural rainfall. The collected rainwater undergoes a series of treatment processes, including filtration and sedimentation, to remove impurities and pollutants, bringing it to a certain water quality standard. It can then be used for various purposes, such as irrigating flowers, trees, flushing toilets, washing cars, and replenishing landscape water features. After further treatment, it can even be used as industrial water. Rainwater harvesting and utilization not only helps alleviate the pressure of urban water shortages and reduce dependence on traditional water resources, but also reduces the pressure on urban drainage systems and mitigates flooding and soil erosion caused by rainwater runoff, resulting in significant economic, environmental, and social benefits.

[0003] For a long time, rainwater from highway projects has mostly been discharged directly. While this method can meet basic drainage needs, it is undoubtedly a waste of a large amount of water resources in the context of a severe global water shortage. As infrastructure, highways are widely distributed, and each rainfall generates a considerable amount of rainwater. Directly discharging this rainwater means that precious water resources are not utilized at all, which runs counter to the concept of sustainable development. For example, in arid areas, water is scarce for greening around highways, while a large amount of rainwater is wasted and cannot be used for irrigation, exacerbating the contradiction between water supply and demand. Based on this, a rainwater collection and utilization device for highway projects is proposed. Summary of the Invention

[0004] In view of the problems existing in the prior art, a rainwater harvesting and utilization device for highway engineering is proposed.

[0005] The technical solution of the present invention is as follows: a rainwater collection and utilization device for highway engineering, comprising a drainage ditch and a rainwater storage tank, wherein a water delivery component and a rainwater treatment component are installed between the drainage ditch and the rainwater storage tank; the water delivery component is used to collect rainwater flowing out of the drainage ditch; the rainwater treatment component is used to filter the rainwater flowing out of the rainwater drainage ditch; the water delivery component includes a water inlet component, a treatment component, and a water control component; the water inlet component includes a water inlet well, an inlet pipe connected to the upper side of the water inlet well, one end of the water inlet pipe connected to the drainage ditch, a cylinder connected to the bottom end of the water inlet well, and a first connecting pipe and a first discharge pipe connected to the cylinder.

[0006] Preferably, the treatment component includes a treatment box, which is fixedly connected to the wall of the rainwater storage box. The bottom of the treatment box is connected to a second discharge pipe. A first filter screen and a second filter screen are fixedly connected to the inner side of the treatment box from bottom to top. A second connecting pipe is connected to the treatment box above the second filter screen. One end of the first connecting pipe is connected to the treatment box, and the connection point is located below the first filter screen.

[0007] Preferably, the water control assembly includes a floating tank connected to the top of a rainwater storage tank. A float plate is installed inside the floating tank. One end of the second connecting pipe is connected to the interior of the floating tank, with the connection point located below the float plate. A first lifting rod is fixedly connected to the top of the float plate. A first clearance slot is provided on the tank wall of the floating tank to avoid the first lifting rod. The first lifting rod is slidably disposed within the first clearance slot. A vertical rack is fixedly connected to one end of the first lifting rod. A drainage cylinder is rotatably connected inside the cylinder. One end of the drainage cylinder has a water inlet, and the side wall of the drainage cylinder has a water outlet. A horizontal rotating shaft is fixedly connected to the other end of the drainage cylinder. A gear is fixedly fitted onto the horizontal rotating shaft after it passes through the cylinder. The gear meshes with the vertical rack. The water outlet corresponds to the first connecting pipe.

[0008] Preferably, the rainwater treatment component includes a control component, a drive component, and a flushing component.

[0009] Preferably, the control component includes a vertical frame plate, on one side of which a horizontal valve plate, a first vertical valve plate, and a second vertical valve plate are fixedly connected sequentially from bottom to top. A first flow hole is longitudinally opened through the horizontal valve plate, a second flow hole is transversely opened through the first vertical valve plate, and a third flow hole is transversely opened through the second vertical valve plate. The horizontal valve plate is slidably and sealingly connected to a second discharge pipe, the first vertical valve plate is slidably and sealingly connected to a first connecting pipe, and the second vertical valve plate is slidably and sealingly connected to a second connecting pipe. A vertical guide groove and an oblique guide groove are opened through the vertical frame plate, with the top end of the vertical guide groove communicating with the bottom end of the oblique guide groove.

[0010] Preferably, the drive assembly includes a fixed frame, which is fixedly connected to the wall of the processing box. An electric cylinder is fixedly connected to the fixed frame, and a fixed rod is fixedly connected to the telescopic end of the electric cylinder. A guide wheel is rotatably sleeved on the fixed rod, which is located at the inner top of the inclined guide groove. A drive block is fixedly connected to one end of the fixed rod.

[0011] Preferably, the rinsing assembly includes a squeezing plate slidably connected inside the treatment chamber. A second lifting rod is fixedly connected to the top of the squeezing plate. A fixing block is fixedly connected to the upper inner side of the treatment chamber. A spring is fixedly connected to the bottom of the fixing block. The bottom end of the spring is fixedly connected to the top of the squeezing plate. A limiting protrusion is fixedly connected to the inner side of the treatment chamber. The limiting protrusion is located on the top of the squeezing plate. A second clearance slot is provided on the wall of the treatment chamber to avoid the second lifting rod. The second lifting rod is slidably connected inside the second clearance slot. A pressure block is fixedly connected to one end of the second lifting rod. The top of the pressure block is at the same height as the top of the vertical guide groove.

[0012] Preferably, a protective box is installed on the wall of the rainwater storage tank, and the water delivery component and the rainwater treatment component are both installed inside the protective box. The bottom ends of the first discharge pipe and the second discharge pipe pass through the bottom of the protective box and are connected to the underground drainage pipe.

[0013] Preferably, a water intake pipe is fixedly connected through the rainwater storage tank, with the bottom end of the water intake pipe extending into the lower inner part of the rainwater storage tank, and the top end of the water intake pipe connected to the inlet of an external water pump.

[0014] Preferably, the top of the drainage ditch is covered with a perforated plate at equal intervals, and the perforated plate has a number of filter holes evenly distributed throughout.

[0015] The beneficial effects of this invention are:

[0016] 1. In this invention, a rainwater harvesting system is constructed, including drainage ditches, water delivery components, rainwater treatment components, and rainwater storage tanks, which work together to collect rainwater from road surfaces and store it properly in the rainwater storage tanks. In the current context of increasingly scarce water resources, this effective method of rainwater collection and storage realizes the resource utilization of rainwater. The collected rainwater can be used for non-drinking purposes such as road greening irrigation and road cleaning, which greatly improves the utilization rate of water resources and alleviates the problem of water shortage to a certain extent, in line with the concept of sustainable development.

[0017] 2. In this invention, by setting up a water control component, the float plate inside the floating tank moves up and down with the water level change. When the rainwater storage tank is full and the water level in the floating tank rises, the float plate rises. Through the transmission of components such as the first lifting rod, vertical rack, and gears, the drain cylinder rotates, allowing excess rainwater to be discharged through the first discharge pipe, thus eliminating the need to add rainwater to the rainwater storage tank. When the water level drops, the float plate descends, and the drain cylinder rotates in the opposite direction, replenishing the rainwater storage tank in a timely manner. This automatic control of rainwater collection not only improves the practicality of the device but also reduces manual intervention, lowers maintenance costs, and enables the device to operate more stably and reliably.

[0018] 3. By cooperating with the first and second filters in the treatment unit, the rainwater entering the treatment tank undergoes two-stage filtration, effectively removing various impurities and ensuring the quality of the rainwater entering the rainwater storage tank. Furthermore, the rainwater treatment component possesses a unique cleaning function. Through the coordinated operation of the control, drive, and flushing components, it can conveniently and quickly clean the accumulated impurities and wastewater within the treatment tank. During the cleaning process, water pressure forces clean water downwards, flushing the first and second filters, removing impurities, and discharging them through the second discharge pipe. This improves the service life of the first and second filters, maintaining their optimal filtration effect and extending the overall lifespan of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure after the protective box has been removed in this invention;

[0021] Figure 3 This is a schematic diagram of the drainage ditch structure in this invention;

[0022] Figure 4 This is a partial structural diagram of the water delivery component in this invention;

[0023] Figure 5 This is a cross-sectional view of the rainwater storage tank in this invention;

[0024] Figure 6 This is a cross-sectional view of the water inlet assembly in this invention;

[0025] Figure 7 This is a cross-sectional view of the drainage cylinder in this invention;

[0026] Figure 8 This is a schematic diagram of the water control component in the present invention;

[0027] Figure 9 This is a partial sectional view of the present invention;

[0028] Figure 10 A schematic diagram of the structure of the rainwater storage tank in this invention;

[0029] Figure 11 A schematic diagram of the structure of the vertical frame plate in this invention;

[0030] Figure 12 A schematic diagram of the structure of the second lifting rod in this invention.

[0031] The diagram shows: 1. Drainage ditch; 2. Mesh plate; 3. Rainwater storage tank; 4. Protective box; 5. Filter hole; 6. Water intake pipe; 7. Water delivery component; 71. Water inlet assembly; 711. Water inlet well; 712. Water inlet pipe; 713. Cylinder; 714. First connecting pipe; 715. First discharge pipe; 72. Treatment assembly; 721. Treatment box; 722. Second discharge pipe; 723. Second connecting pipe; 724. First filter screen; 725. Second filter screen; 73. Water control assembly; 731. Floating tank; 732. First lifting rod; 733. Vertical rack; 734. Gear; 735. Horizontal rotating shaft; 736. First clearance slot; 737. Drainage cylinder; 7371. Water inlet hole; 7 372. Water outlet; 738. Float plate; 8. Rainwater treatment component; 81. Control component; 811. Vertical frame plate; 812. Horizontal valve plate; 8121. First flow hole; 813. First vertical valve plate; 8131. Second flow hole; 814. Second vertical valve plate; 8141. Third flow hole; 815. Vertical guide groove; 816. Inclined guide groove; 82. Drive component; 821. Fixing frame; 822. Electric cylinder; 823. Fixing rod; 824. Guide wheel; 825. Drive block; 83. Flushing component; 831. Second lifting rod; 832. Fixing block; 833. Pressure block; 834. Extrusion plate; 835. Spring; 836. Limiting protrusion; 837. Second clearance slot. Detailed Implementation

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Example 1

[0034] Reference Figures 1 to 10 A rainwater harvesting and utilization device for highway engineering is provided, including a drainage ditch 1 and a rainwater storage tank 3. A water delivery component 7 and a rainwater treatment component 8 are installed between the drainage ditch 1 and the rainwater storage tank 3. The water delivery component 7 is used to collect rainwater flowing out of the drainage ditch 1. The rainwater treatment component 8 is used to filter the rainwater flowing out of the drainage ditch 1. The water delivery component 7 includes a water inlet assembly 71, a treatment assembly 72 and a water control assembly 73. The water inlet assembly 71 includes a water inlet well 711. A water inlet pipe 712 is connected to the upper side of the water inlet well 711. One end of the water inlet pipe 712 is connected to the drainage ditch 1. A cylinder 713 is connected to the bottom end of the water inlet well 711. A first connecting pipe 714 and a first discharge pipe 715 are connected to the cylinder 713. The two ends of the drainage ditch 1 gradually decrease towards the water inlet pipe 712, thereby ensuring that the water entering the drainage ditch 1 can smoothly enter the water inlet pipe 712.

[0035] Furthermore, the processing component 72 includes a processing box 721, which is fixedly connected to the wall of the rainwater storage box 3. The bottom end of the processing box 721 is connected to a second discharge pipe 722. The inner side of the processing box 721 is fixedly connected to a first filter screen 724 and a second filter screen 725 from bottom to top. A second connecting pipe 723 is connected to the processing box 721 above the second filter screen 725. One end of the first connecting pipe 714 is connected to the processing box 721, and the connection point is located below the first filter screen 724.

[0036] Furthermore, the water control component 73 includes a floating tank 731, which is connected to the top of the rainwater storage tank 3. A float plate 738 is installed inside the floating tank 731. One end of the second connecting pipe 723 is connected to the interior of the floating tank 731, and the connection point is located below the float plate 738. A first lifting rod 732 is fixedly connected to the top of the float plate 738. A first clearance slot 736 is provided on the tank wall of the floating tank 731 to avoid the first lifting rod 732. The first lifting rod 732 is slidably disposed in the first clearance slot 736. Inside 36, a vertical rack 733 is fixedly connected to one end of the first lifting rod 732, and a drain cylinder 737 is rotatably connected inside the cylinder 713. One end of the drain cylinder 737 is provided with a water inlet 7371, and a water outlet 7372 is provided on the side wall of the drain cylinder 737. A horizontal rotating shaft 735 is fixedly connected to the other end of the drain cylinder 737. After the horizontal rotating shaft 735 passes through the cylinder 713, a gear 734 is fixedly sleeved on it. The gear 734 meshes with the vertical rack 733, and the water outlet 7372 is correspondingly provided with the first connecting pipe 714.

[0037] In the above description, drainage ditch 1 is set at a specific drainage position below the road surface in highway engineering. Rainwater can pass smoothly through and enter the interior of drainage ditch 1. The rainwater entering drainage ditch 1 will flow into inlet well 711 through the connecting structure of inlet pipe 712. Then, the rainwater will enter cylinder 713 from the bottom end of inlet well 711. Inside cylinder 713, the rainwater will flow in from inlet hole 7371 at one end of drainage cylinder 737, and then flow out from outlet hole 7372 on its side wall, and then enter the first connecting pipe 714. At this time, the rainwater will pass through the first vertical valve plate 813, and through the second flow hole 8131 that is opened horizontally through the first vertical valve plate 813, smoothly enter the treatment box 721. Inside the treatment box 721, the rainwater will... After undergoing a relatively fine filtration process, the first filter screen 724 and the second filter screen 725 are fixedly connected from bottom to top inside the treatment box 721. As the rainwater in the treatment box 721 increases, the water level gradually rises. The rainwater will pass through these two filter screens in sequence. The first filter screen 724 can filter out relatively large impurities in the rainwater, while the second filter screen 725 further filters out even smaller impurities, thereby effectively improving the purity of the rainwater. When the filtered rainwater rises to the height of the second connecting pipe 723, the rainwater will flow into the floating water tank 731 through the third flow hole 8141 and the second connecting pipe 723, and then fall into the rainwater storage tank 3, thus completing the rainwater collection process.

[0038] In the above-mentioned process of rainwater collection, the water control component 73 automatically adjusts the flow direction of rainwater according to the water level changes in the floating tank 731. The floating tank 731 is connected to the top of the rainwater storage tank 3. As more and more rainwater is collected in the rainwater storage tank 3, the water level rises to the level in the floating tank 731. As the water level continues to rise, the float plate 738 in the floating tank 731 floats on the water surface under the action of buoyancy and moves upward as the water level rises. The top of the float plate 738 is fixedly connected to the first lifting rod 732. The float plate 738 moves upward. When in motion, the first lifting rod 732 slides upward along the first clearance slot 736 opened on the wall of the float tank 731. One end of the first lifting rod 732 is fixedly connected to a vertical rack 733, so the rise of the first lifting rod 732 will synchronously drive the vertical rack 733 to move upward. Inside the cylinder 713, the other end of the drain cylinder 737 is fixedly connected to a horizontal rotating shaft 735. After the horizontal rotating shaft 735 passes through the cylinder 713, a gear 734 is fixedly sleeved on it. The gear 734 meshes with the vertical rack 733. Therefore, when the vertical rack 733 moves upward, The drive gear 734 rotates, which in turn drives the horizontal rotating shaft 735 to rotate, causing the drainage cylinder 737 to rotate. During the rotation of the drainage cylinder 737, the position of the water outlet 7372 on its side wall changes. When the rainwater storage tank 3 is full and water enters the float tank 731, raising the float plate 738 to a certain height, the water outlet 7372 gradually aligns with the inlet end of the first discharge pipe 715 as the drainage cylinder 737 rotates. At this point, rainwater will be discharged through the first discharge pipe 715, preventing the rainwater storage tank 3 from overflowing due to excessive rainwater. When there is too much water, it overflows; conversely, when the water in the rainwater storage tank 3 decreases, the water level drops, and the float 738 moves downward under the action of gravity. The descent of the float 738 drives the first lifting rod 732 and the vertical rack 733 to move downward simultaneously. The downward movement of the vertical rack 733 drives the gear 734 to rotate in the opposite direction, which in turn causes the drain cylinder 737 to rotate in the opposite direction, so that the water outlet 7372 is aligned with the first connecting pipe 714 again. In this way, rainwater can continue to be added to the rainwater storage tank 3, realizing automatic control of whether to add rainwater based on the water level in the rainwater storage tank 3.

[0039] Example 2

[0040] Furthermore, refer to Figures 1 to 12Based on Embodiment 1, the rainwater treatment component 8 includes a control component 81, a drive component 82, and a flushing component 83. The control component 81 includes a vertical frame plate 811. A horizontal valve plate 812, a first vertical valve plate 813, and a second vertical valve plate 814 are fixedly connected to one side of the vertical frame plate 811 from bottom to top. A first flow hole 8121 is longitudinally opened through the horizontal valve plate 812. A second flow hole 8131 is transversely opened through the first vertical valve plate 813. A third flow hole 8141 is transversely opened through the second vertical valve plate 814. The horizontal valve plate 812 is slidably and sealingly connected to the second discharge pipe 722. The first vertical valve plate 813 is slidably and sealingly connected to the first connecting pipe 714. The second vertical valve plate 814 is slidably and sealingly connected to the second connecting pipe 723. A vertical guide groove 815 and an oblique guide groove 816 are opened through the vertical frame plate 811. The top end of the vertical guide groove 815 is connected to the bottom end of the oblique guide groove 816.

[0041] Furthermore, the drive assembly 82 includes a fixed frame 821, which is fixedly connected to the wall of the processing box 721. An electric cylinder 822 is fixedly connected to the fixed frame 821. The electric cylinder 822 is electrically connected to an external control switch via a wire. A fixed rod 823 is fixedly connected to the telescopic end of the electric cylinder 822. A guide wheel 824 is rotatably sleeved on the fixed rod 823 and is located at the inner top of the inclined guide groove 816. A drive block 825 is fixedly connected to one end of the fixed rod 823.

[0042] Furthermore, the rinsing assembly 83 includes a squeezing plate 834, which is slidably connected inside the processing box 721. A second lifting rod 831 is fixedly connected to the top of the squeezing plate 834. A fixing block 832 is fixedly connected to the upper inner side of the processing box 721. A spring 835 is fixedly connected to the bottom of the fixing block 832. The bottom end of the spring 835 is fixedly connected to the top of the squeezing plate 834. A limiting protrusion 836 is fixedly connected to the inner side of the processing box 721. The limiting protrusion 836 is located on the top of the squeezing plate 834. A second clearance slot 837 is provided on the wall of the processing box 721 to avoid the second lifting rod 831. The second lifting rod 831 is slidably connected inside the second clearance slot 837. A pressure block 833 is fixedly connected to one end of the second lifting rod 831. The top of the pressure block 833 is at the same height as the top of the vertical guide groove 815.

[0043] As rainwater continuously enters the treatment tank 721 for filtration, over time, a certain amount of impurities and wastewater will accumulate below the first filter screen 724 within the treatment tank 721. At this point, cleaning is necessary. The cleaning operation is mainly accomplished by the coordinated action of the control component 81, drive component 82, and flushing component 83 in the rainwater treatment component 8. After the electric cylinder 822 is activated, its telescopic end extends, driving the fixed rod 823 downwards. A guide wheel 824 is rotatably mounted on the fixed rod 823. The guide wheel 824 is located at the inner top of the inclined guide groove 816. During the downward movement of the fixed rod 823, the guide wheel 824 moves along the inclined guide groove. 816 rolls downwards, causing the guide wheel 824 to drive the vertical frame plate 811 to slide horizontally synchronously. Since the horizontal valve plate 812, the first vertical valve plate 813, and the second vertical valve plate 814 are fixedly connected to one side of the vertical frame plate 811 from bottom to top, the sliding of the vertical frame plate 811 will cause the horizontal valve plate 812 to slide on the second discharge pipe 722, the first vertical valve plate 813 to slide on the first connecting pipe 714, and the second vertical valve plate 814 to slide on the second connecting pipe 723. During this process, the second flow hole 8131 on the first vertical valve plate 813 will gradually be misaligned with the first connecting pipe 714, and finally the outlet end of the first connecting pipe 714 will be completely blocked by the first vertical valve plate 813. Simultaneously, the third flow hole 8141 on the second vertical valve plate 814 will be offset from the second connecting pipe 723, thus blocking the inlet end of the second connecting pipe 723 through the second vertical valve plate 814. Meanwhile, the first flow hole 8121, which runs longitudinally through the horizontal valve plate 812, will gradually align with the inlet end of the second discharge pipe 722. When the guide wheel 824 enters the vertical guide groove 815 from the bottom of the inclined guide groove 816, the first flow hole 8121 will be perfectly aligned with the interior of the second discharge pipe 722, allowing impurities and wastewater in the treatment tank 721 to enter the second discharge pipe 722 through the first flow hole 8121. At this time, the telescopic end of the electric cylinder 822 continues to extend... The drive block 825, which is fixedly connected to one end of the fixed rod 823, will move downward. Since the drive block 825 is in contact with the pressure block 833 at this time, the downward movement of the drive block 825 will push the pressure block 833 to move downward synchronously. The pressure block 833 is fixedly connected to one end of the second lifting rod 831. Therefore, the descent of the pressure block 833 will drive the second lifting rod 831 to slide downward along the second clearance slot 837. The other end of the second lifting rod 831 is fixedly connected to the extrusion plate 834. The extrusion plate 834 is slidably connected inside the processing box 721. The bottom of the fixed block 832, which is fixedly connected to the upper part of the inner side of the processing box 721, is connected to the top of the extrusion plate 834 through the spring 835.As the second lifting rod 831 moves the squeezing plate 834 downward, the spring 835 is elastically stretched. The squeezing plate 834 applies pressure to the rainwater in the treatment tank 721, causing the clean water above the second filter screen 725 to flow downwards. Under the flushing action of the water flow, some impurities attached to the second filter screen 725 and the first filter screen 724 can be cleaned off. At the same time, impurities and sewage accumulated below the first filter screen 724 will be discharged through the second discharge pipe 722 into the underground drainage pipe under pressure. After cleaning, the telescopic end of the electric cylinder 822 is retracted, and all components will reset according to the opposite movement trajectory, thus allowing subsequent rainwater collection to continue.

[0044] Example 3

[0045] Furthermore, refer to Figures 1 to 12 Based on Embodiment 2, a protective box 4 is installed on the wall of the rainwater storage box 3. The water delivery component 7 and the rainwater treatment component 8 are both installed inside the protective box 4. The bottom ends of the first discharge pipe 715 and the second discharge pipe 722 pass through the bottom of the protective box 4 and are connected to the underground drainage pipe.

[0046] Furthermore, a water intake pipe 6 is fixedly connected through the rainwater storage tank 3. The bottom end of the water intake pipe 6 extends into the lower inner part of the rainwater storage tank 3, and the top end of the water intake pipe 6 is connected to the water inlet of the external water pump.

[0047] Furthermore, the top of the drainage ditch 1 is covered with a perforated plate 2 at equal intervals, and a number of filter holes 5 are evenly opened through the perforated plate 2.

[0048] In the above-mentioned rainwater storage tank 3, a water intake pipe 6 is fixedly connected through it, with its bottom end extending into the lower part of the inner side of the rainwater storage tank 3. When the collected rainwater is needed, an external water pump is started, and the rainwater in the rainwater storage tank 3 is extracted through the water intake pipe 6 for purposes such as road greening irrigation and road cleaning. In addition, a protective box 4 installed on the wall of the rainwater storage tank 3 covers both the water delivery component 7 and the rainwater treatment component 8 inside. The protective box 4 can prevent external factors, such as dust and debris, from damaging the water delivery component 7 and the rainwater treatment component 8, extending the service life of the device and ensuring stable operation of the device. The bottom ends of the first discharge pipe 715 and the second discharge pipe 722 pass through the bottom of the protective box 4 and are connected to the underground drainage pipe, ensuring the smooth discharge of excess rainwater and impurities and sewage in the treatment tank 721.

[0049] In the above process, as rainwater flows into the drainage ditch 1, it first passes through the perforated plate 2 covering the top of the drainage ditch 1. The perforated plate 2 has a number of filter holes 5 evenly distributed on it. These filter holes 5 can play a preliminary filtration role, blocking larger particulate impurities in the rainwater and thus preventing larger particulate impurities from entering the drainage ditch 1.

[0050] Reference Figures 1 to 12 The working principle of the rainwater harvesting and utilization device for highway engineering provided by this invention is as follows:

[0051] In use, the device is pre-buried underground or a foundation pit is constructed for its installation. Drainage ditch 1 is installed in the highway construction project at a drainage position lower than the road surface. Rainwater flows from the road surface to drainage ditch 1, and larger particles are blocked above by the filter holes 5 on the perforated plate 2 covering the top of drainage ditch 1. The rainwater then enters drainage ditch 1, and from there through inlet pipe 712 into inlet well 711, and then through inlet well 711 into cylinder 713. The rainwater in cylinder 713 then enters through inlet hole 7371 of drainage cylinder 737, and flows out through outlet hole 7372 of drainage cylinder 737 into the first connecting pipe 714. Rainwater enters the treatment tank 721 through the second flow hole 8131 on the first vertical valve plate 813. As the water level in the treatment tank 721 rises, the rainwater is filtered sequentially through the first filter screen 724 and the second filter screen 725. After the filtered rainwater rises to the height of the second connecting pipe 723, it enters the rainwater storage tank 3 through the second connecting pipe 723, thereby collecting the rainwater. As more and more rainwater is collected in the rainwater storage tank 3, the water level in the rainwater storage tank 3 rises and enters the float tank 731, causing the float plate 738 to float on the water surface. As the water level in the float tank 731 continues to rise, the float plate 738 also floats accordingly. As the water level rises, the float 738 moves upward, causing the first lifting rod 732 to slide upward along the first clearance slot 736. The first lifting rod 732 drives the vertical rack 733 to move upward simultaneously. The vertical rack 733 drives the gear 734 to rotate, and the gear 734 drives the horizontal rotating shaft 735 to rotate the drainage cylinder 737. As the drainage cylinder 737 rotates, the outlet hole 7372 gradually aligns with the inlet end of the first discharge pipe 715, allowing rainwater to be discharged through the first discharge pipe 715. This ensures that when the rainwater storage tank 3 is full, the water level causes the float 738 to move upward, preventing excess rainwater from entering the rainwater storage tank 3 and allowing it to flow directly through the first discharge pipe. When the water in the rainwater storage tank 3 decreases, the float 738 moves downward, causing the vertical rack 733 to move downward and drive the gear 734 to rotate in the opposite direction. This causes the drain cylinder 737 to rotate in the opposite direction, so that the outlet hole 7372 aligns with the first connecting pipe 714, thereby adding rainwater to the rainwater storage tank 3. Through this structural design, when the rainwater storage tank 3 is low on rainwater, the outlet hole 7372 aligns with the first connecting pipe 714, allowing rainwater to be added to the rainwater storage tank 3. When the rainwater storage tank 3 is full, the outlet hole 7372 aligns with the first discharge pipe 715, directly discharging the rainwater into the underground drainage pipe.When it is necessary to clean the impurities and wastewater located below the first filter screen 724 in the treatment box 721, the electric cylinder 822 is activated. The extension end of the electric cylinder 822 extends, causing the fixed rod 823 to move downward. The fixed rod 823 drives the guide wheel 824 and the drive block 825 to move downward synchronously. When the guide wheel 824 moves downward, it remains within the inclined guide groove 816, thereby causing the vertical frame plate 811 to drive the horizontal valve plate 812, the first vertical valve plate 813, and the second vertical valve plate 814 to slide laterally synchronously. This causes the horizontal valve plate 812 to slide within the second discharge pipe 722, and the first vertical valve plate 813 to slide within the first connecting pipe 714. The second vertical valve plate 814 slides within the second connecting pipe 723, thereby misaligning the second flow hole 8131 of the first vertical valve plate 813 with the first connecting pipe 714 and the third flow hole 8141 of the second vertical valve plate 814 with the second connecting pipe 723. At this time, the first vertical valve plate 813 blocks the outlet end of the first connecting pipe 714, and the second vertical valve plate 814 blocks the inlet end of the second connecting pipe 723. Simultaneously, the first flow hole 8121 of the horizontal valve plate 812 gradually aligns with the inlet end of the second discharge pipe 722 until the first flow hole 8121 is completely aligned with the interior of the second discharge pipe 722. At this moment, the guide wheel 824 enters the vertical guide groove 815 from the bottom of the inclined guide groove 816, and the drive block 825 contacts the pressure block 833. The telescopic end of the electric cylinder 822 continues to extend, causing the drive block 825 to move downward. The guide wheel 824 remains in the vertical guide groove 815 and moves downward. The vertical frame plate 811 remains stationary. As the drive block 825 moves downward, it pushes the pressure block 833 to move downward synchronously. The pressure block 833 drives the second lifting rod 831 to move downward, and the second lifting rod 831 slides downward along the second clearance slot 837. The second lifting rod 831 drives the extrusion plate 83... 4. Moving downwards, spring 835 is elastically stretched. As the extrusion plate 834 moves downwards, pressure is applied to the rainwater in the treatment tank 721, causing clean water above the second filter screen 725 to flow downwards. This cleans some impurities from the second filter screen 725 and the first filter screen 724. Simultaneously, impurities and wastewater below the first filter screen 724 are discharged through the second discharge pipe 722 into the underground drainage pipe. After cleaning, the telescopic end of the electric cylinder 822 is retracted, reversing the operation, thereby resetting the vertical frame plate 811, allowing subsequent rainwater collection to continue.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A rainwater harvesting and utilization device for highway engineering, characterized in that: It includes a drainage ditch and a rainwater storage tank, with a water delivery component and a rainwater treatment component installed between the drainage ditch and the rainwater storage tank; The water delivery component includes a water inlet assembly, a treatment assembly, and a water control assembly; The water inlet assembly includes a water inlet well, an inlet pipe connected to the upper side of the water inlet well, one end of the inlet pipe connected to a drainage ditch, a cylinder connected to the bottom of the water inlet well, and a first connecting pipe and a first discharge pipe connected to the cylinder. The processing assembly includes a processing box, which is fixedly connected to the wall of the rainwater storage box. A second discharge pipe is connected to the bottom of the processing box. A first filter screen and a second filter screen are fixedly connected to the inner side of the processing box from bottom to top. A second connecting pipe is connected to the processing box above the second filter screen. One end of the first connecting pipe is connected to the processing box, and the connection point is located below the first filter screen. The rainwater treatment component includes a control component, a drive component, and a flushing component; The control component includes a vertical frame plate. A horizontal valve plate, a first vertical valve plate, and a second vertical valve plate are fixedly connected to one side of the vertical frame plate from bottom to top. A first flow hole is longitudinally opened through the horizontal valve plate. A second flow hole is transversely opened through the first vertical valve plate. A third flow hole is transversely opened through the second vertical valve plate. The horizontal valve plate is slidably and sealingly connected to a second discharge pipe. The first vertical valve plate is slidably and sealingly connected to a first connecting pipe. The second vertical valve plate is slidably and sealingly connected to a second connecting pipe. A vertical guide groove and an oblique guide groove are opened through the vertical frame plate. The top end of the vertical guide groove is connected to the bottom end of the oblique guide groove. The drive assembly includes a fixed frame, which is fixedly connected to the wall of the processing box. An electric cylinder is fixedly connected to the fixed frame. A fixed rod is fixedly connected to the telescopic end of the electric cylinder. A guide wheel is rotatably sleeved on the fixed rod. The guide wheel is located at the inner top of the inclined guide groove. A drive block is fixedly connected to one end of the fixed rod. The rinsing assembly includes a squeezing plate slidably connected inside the treatment chamber. A second lifting rod is fixedly connected to the top of the squeezing plate. A fixing block is fixedly connected to the upper inner side of the treatment chamber. A spring is fixedly connected to the bottom of the fixing block. The bottom end of the spring is fixedly connected to the top of the squeezing plate. A limiting protrusion is fixedly connected to the inner side of the treatment chamber. The limiting protrusion is located on the top of the squeezing plate. A second clearance slot is provided on the wall of the treatment chamber to avoid the second lifting rod. The second lifting rod is slidably connected inside the second clearance slot. A pressure block is fixedly connected to one end of the second lifting rod. The top of the pressure block is at the same height as the top of the vertical guide groove.

2. The rainwater harvesting and utilization device for highway engineering according to claim 1, characterized in that: The water control assembly includes a floating tank connected to the top of a rainwater storage tank. A float plate is installed inside the floating tank. One end of a second connecting pipe is connected to the interior of the floating tank, with the connection point located below the float plate. A first lifting rod is fixedly connected to the top of the float plate. A first clearance slot is provided on the tank wall of the floating tank to avoid the first lifting rod. The first lifting rod is slidably disposed within the first clearance slot. A vertical rack is fixedly connected to one end of the first lifting rod. A drainage cylinder is rotatably connected inside the tank. One end of the drainage cylinder has a water inlet, and the side wall of the drainage cylinder has a water outlet. A horizontal rotating shaft is fixedly connected to the other end of the drainage cylinder. A gear is fixedly fitted onto the horizontal rotating shaft after it passes through the tank. The gear meshes with the vertical rack. The water outlet corresponds to the first connecting pipe.

3. The rainwater harvesting and utilization device for highway engineering according to claim 1, characterized in that: A protective box is installed on the wall of the rainwater storage tank. The water delivery component and the rainwater treatment component are both installed inside the protective box. The bottom ends of the first discharge pipe and the second discharge pipe pass through the bottom of the protective box and are connected to the underground drainage pipe.

4. A rainwater harvesting and utilization device for highway engineering according to claim 1, characterized in that: A water intake pipe is fixedly connected through the rainwater storage tank. The bottom end of the water intake pipe extends into the lower inner part of the rainwater storage tank, and the top end of the water intake pipe is connected to the inlet of an external water pump.

5. A rainwater harvesting and utilization device for highway engineering according to claim 1, characterized in that: The top of the drainage ditch is covered with a perforated plate at equal intervals, and the perforated plate has a number of filter holes evenly distributed throughout.

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