Farmland rainwater water quality purification, drought resistance and irrigation integrated device

Abstract

The invention provides a farmland rainwater water quality purification, drought resistance and irrigation integrated device, and belongs to the technical field of rainwater treatment.The farmland rainwater water quality purification, drought resistance and irrigation integrated device comprises a water storage barrel, a water inlet barrel, a mud scraping assembly, a water power driving assembly and a water pumping assembly; the water inlet barrel is fixedly mounted at the top of the water storage barrel and vertically penetrates through the top wall of the water storage barrel, the lower end of the water inlet barrel is open, a plurality of water inlets are formed in the side wall, located above the water storage barrel, of a barrel body of the water inlet barrel, and a first separation net is fixedly mounted in each group of water inlets. Compared with the prior art, collection, purification and irrigation of farmland rainwater can be integrated, so that the purpose of saving water resources is achieved, and in the rainwater collection process, farmland sludge in the rainwater can be effectively intercepted and cleaned, so that the water storage capacity of the rainwater is improved, and the rainwater collection effect is improved.

Description

Technical Field

[0001] This invention belongs to the field of rainwater treatment technology, specifically an integrated device for collecting, purifying, irrigating, and drought-resistant farmland rainwater. Background Technology

[0002] Rainwater, as a natural and renewable resource, can provide a stable source of irrigation water for farmland during dry seasons or when water resources are scarce, thus ensuring the continuity of agricultural production. This approach helps reduce dependence on traditional water sources such as groundwater and rivers, achieving sustainable water resource utilization and effectively alleviating water scarcity.

[0003] Currently, the main method for collecting rainwater from farmland is to build reservoirs around the farmland. When the rainy season arrives, surface rainwater flows into the reservoirs, where it is collected and stored to provide irrigation water for farmland during the dry season. However, when surface rainwater flows into the reservoirs, it often carries farmland silt into the reservoirs. This silt accumulates at the bottom of the reservoirs, encroaching on the internal space and reducing the reservoirs' water storage capacity, thus affecting irrigation efficiency. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide an integrated device for farmland rainwater collection, water quality purification, drought resistance and irrigation.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: An integrated device for rainwater harvesting, water purification, drought resistance, and irrigation in farmland includes a water storage tank, a water inlet tank, a sludge scraping assembly, a hydrodynamic drive assembly, and a pumping assembly. The water storage tank is buried inside the farmland surface. The water inlet cylinder is fixedly installed on the top of the water storage cylinder and vertically penetrates the top wall of the water storage cylinder, with the lower end of the water inlet cylinder being open. The water inlet cylinder has several water inlets on its side wall above the water storage cylinder, and a first partition net is fixedly installed in each group of water inlets. The sludge scraping assembly is positioned above the water storage tank and is attached to the outer wall of the water inlet tank. The hydrodynamic drive assembly is installed inside the inlet cylinder. When rainwater enters the water storage tank through the inlet, the hydrodynamic drive assembly drives the sludge scraping assembly to move circumferentially around the outer wall of the inlet cylinder to scrape away the sludge on the outer wall of the first mesh. The pumping assembly is installed inside the water storage tank and is used to pump rainwater from inside the tank to the farmland for irrigation.

[0006] As a further improvement of the present invention: the sludge scraping assembly includes a scraper blade, a connector, and a support tube. The sidewall of the scraper blade is in contact with the outer circumference of the inlet cylinder. One end of the support pipe extends above the inlet cylinder, and the other end passes through the top wall of the inlet cylinder and extends into the interior of the inlet cylinder. The support pipe is vertically distributed along the axis of the water inlet cylinder. The support pipe is rotatably connected to the top wall of the water inlet cylinder. One end of the connector is connected to the support pipe, and the other end is connected to the sludge scraper.

[0007] As a further improvement of the present invention: the hydrodynamic drive assembly includes arc-shaped blades, a rotating shaft, a drive bevel gear, and a transmission bevel gear. Several sets of rotating shafts are provided, each corresponding to one of the water inlets. Each rotating shaft is positioned below one of the water inlets. One end of each rotating shaft is rotatably connected to the inner wall of the water inlet cylinder, and the other end is fixedly connected to a set of driving bevel gears. Each set of rotating shafts has several arc-shaped blades fixedly arranged on its outer wall. The arc-shaped blades are arranged in a ring-shaped interval on the outer wall of the rotating shaft. The transmission bevel gear is fixedly arranged outside the support tube and meshes synchronously with the several drive bevel gears.

[0008] As a further improvement of the present invention: the connecting member includes a connecting rod and an L-shaped support rod. One end of the L-shaped support rod is fixedly connected to the outer wall of the support pipe, and the other end extends to the side of the water inlet cylinder and is connected to the connecting rod. The end of the connecting rod away from the L-shaped support rod is connected to the sludge scraper.

[0009] As a further improvement of the present invention: the scraper blade has a ring frame structure.

[0010] As a further improvement of the present invention: a second partition net is fixedly provided on the inner side of the scraper blade with a ring frame structure.

[0011] As a further improvement of the present invention: a limiting block is fixedly provided on the upper edge of the water inlet cylinder, the limiting block being located between two adjacent sets of water inlets, and the side wall of the limiting block being provided with an arc-shaped surface. The connecting rod is rotatably connected to the L-shaped support rod. An annular stop and an extension rod are fixedly provided on the side wall of the connecting rod. The end of the extension rod away from the connecting rod extends to the top of the water inlet cylinder. The annular stop and the L-shaped support rod are connected by an elastic rotating member.

[0012] As a further improvement of the present invention: a sealing component is also provided inside the water inlet cylinder, which is used to seal the water inlet when no rainwater enters the water inlet from the water inlet.

[0013] As a further improvement to the present invention: the sealing assembly includes an elastic support member and an arc-shaped sealing plate. The arc-shaped sealing plate is hinged to the inner wall of the water inlet cylinder. One end of the elastic support is connected to the inner top wall of the water inlet cylinder, and the other end is connected to the arc-shaped sealing plate, which provides elastic support for the arc-shaped sealing plate.

[0014] As a further improvement to the present invention: the pumping assembly includes a water pump and a water pipe. The water pump is fixedly installed at the bottom inside the water storage tank. One end of the water pipe is connected to the water pump, and the other end passes through the inside of the support pipe and extends to the outside of the water inlet tank.

[0015] Compared with the prior art, the beneficial effects of the present invention are: In this embodiment of the invention, a water storage tank is buried inside the farmland surface. When the rainy season arrives, rainwater enters the tank through several inlets on the side wall and then enters the storage tank through an open opening at the bottom, thus collecting the rainwater. During the process of rainwater entering the tank through the inlets, the rainwater passes through a first mesh screen, which intercepts the farmland silt carried by the rainwater, preventing the silt from entering the storage tank and encroaching on its internal space, thereby affecting the rainwater collection effect and purifying the rainwater. When rainwater enters the tank, a hydrodynamic drive component drives a sludge scraper component to move around the tank. The system operates in a circular motion. The scraping component removes farmland silt trapped outside the first mesh, preventing it from clogging the mesh and ensuring rainwater can smoothly enter the storage tank through the inlet for efficient collection. During the dry season, the pumping component pumps the collected rainwater to the farmland for irrigation. Compared to existing technologies, this system integrates rainwater collection, purification, and irrigation, achieving water conservation. Furthermore, it effectively intercepts and removes farmland silt during rainwater collection, improving water storage capacity and collection efficiency. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of an integrated rainwater harvesting, water purification, drought resistance, and irrigation device for farmland. Figure 1 ; Figure 2 A schematic diagram of the structure of an integrated rainwater harvesting, water purification, drought resistance, and irrigation device for farmland.Figure 2 ; Figure 3 A schematic diagram of the structure of an integrated rainwater harvesting, water purification, drought resistance, and irrigation device for farmland. Figure 3 ; Figure 4 for Figure 1 Enlarged view of region A in the middle; Figure 5 for Figure 1 Enlarged view of region B in the middle; Figure 6 for Figure 2 Enlarged diagram of region C in the middle; Figure 7 for Figure 3 Enlarged schematic diagram of region D in the middle; In the diagram: 100-Water storage tank, 1001-Water pipe, 200-Water inlet tank, 2001-Water inlet, 2002-First partition net, 2003-Limiting block, 300-Sludge scraping assembly, 3001-Sludge scraper, 3002-Second partition net, 3003-Connecting rod, 3004-Extension rod, 3005-Annular stop block, 3006-Elastic rotating component, 3007-L-shaped support rod, 3008-Support pipe, 400-Sealing assembly, 4001-Elastic support component, 4002-Arc-shaped sealing plate, 500-Hydropower drive assembly, 5001-Arc-shaped blade, 5002-Rotating shaft, 5003-Drive bevel gear, 5004-Transmission bevel gear. Detailed Implementation

[0017] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] Please see Figure 1 , Figure 2 as well as Figure 3 This embodiment provides an integrated device for farmland rainwater collection, purification, drought resistance, and irrigation, including a water storage tank 100, an inlet tank 200, a sludge scraping assembly 300, a water-powered drive assembly 500, and a pumping assembly. The water storage tank 100 is buried inside the farmland surface. The inlet tank 200 is fixedly installed on the top of the water storage tank 100 and vertically penetrates the top wall of the water storage tank 100. The lower end of the inlet tank 200 is open. Several inlets 2001 are opened on the side wall of the inlet tank 200 above the water storage tank 100. A first mesh is fixedly installed in each group of inlets 2001. 2002, the sludge scraping assembly 300 is disposed above the water storage tank 100 and attached to the outer wall of the water inlet tank 200. The hydrodynamic drive assembly 500 is installed inside the water inlet tank 200. When rainwater enters the water storage tank 100 from the inlet 2001, the hydrodynamic drive assembly 500 drives the sludge scraping assembly 30 to move circumferentially around the outer wall of the water inlet tank 200 to scrape off the silt on the outer wall of the first partition net 2002. The pumping assembly is disposed inside the water storage tank 100 and is used to pump the rainwater inside the water storage tank 100 to the farmland to realize the irrigation of the farmland.

[0022] By burying the water storage tank 100 inside the farmland surface, when the rainy season arrives, rainwater enters the water inlet tank 200 through several inlets 2001 on the side wall of the inlet tank 200, and then enters the water storage tank 100 through the open end at the bottom of the inlet tank 200, thus achieving rainwater collection. During the process of rainwater entering the water inlet tank 200 from the inlets 2001, the rainwater passes through the first mesh 2002, and the farmland silt carried in the rainwater is intercepted by the first mesh 2002, thus preventing farmland silt from entering the water storage tank 100 and encroaching on the internal space of the water storage tank 100, thereby reducing the water storage tank 100's ability to effectively collect rainwater. The water collection effect is affected, and rainwater purification is achieved. When rainwater enters the inlet cylinder 200, the hydrodynamic drive component 500 drives the sludge scraper component 300 to move in a circular motion around the inlet cylinder 200. When the sludge scraper component 300 moves in a circular motion, it scrapes away the farmland silt intercepted outside the first partition net 2002, thereby preventing the farmland silt from clogging the first partition net 2002 and ensuring that rainwater can smoothly enter the water storage tank 100 through the inlet 2001, thus achieving smooth rainwater collection. When the dry season comes, the rainwater collected in the water storage tank 100 is pumped to the farmland by the pumping component, thereby irrigating the farmland.

[0023] Please see Figure 3 , Figure 4 as well as Figure 5 In one embodiment, the sludge scraping assembly 30 includes a scraper 3001, a connector, and a support tube 3008. The sidewall of the scraper 3001 is in contact with the outer circumferential wall of the water inlet cylinder 200. One end of the support tube 3008 extends above the water inlet cylinder 200, and the other end passes through the top wall of the water inlet cylinder 200 and extends into the interior of the water inlet cylinder 200. The support tube 3008 is vertically distributed along the axial direction of the water inlet cylinder 200. The support tube 3008 is rotatably engaged with the top wall of the water inlet cylinder 200. One end of the connector is connected to the support tube 3008, and the other end is connected to the scraper 3001.

[0024] When rainwater passes through the inlet 2001 and enters the storage tank 100 from inside the inlet cylinder 200, the hydrodynamic drive component 500 drives the support pipe 3008 to rotate. The support pipe 3008 drives the scraper 3001 to move around the inlet cylinder 202 through the connector. When the scraper 3001 moves around, it adheres to the outer wall of the inlet cylinder 200, thereby scraping away the farmland silt intercepted on the outer wall of the first partition 2002, preventing the farmland silt from clogging the first partition 2002, and ensuring that subsequent rainwater can pass through the first partition 2002 smoothly, so as to achieve smooth rainwater collection.

[0025] Please see Figure 7In one embodiment, the hydrodynamic drive assembly 500 includes arc-shaped blades 5001, a rotating shaft 5002, a drive bevel gear 5003, and a transmission bevel gear 5004. Several sets of rotating shafts 5002 are provided, each corresponding to one of the water inlets 2001. Each set of rotating shafts 5002 is positioned below one of the water inlets 2001. One end of each rotating shaft 5002 is rotatably connected to the inner wall of the water inlet cylinder 200, and the other end is fixedly connected to one set of drive bevel gears 5003. Several arc-shaped blades 5001 are fixedly arranged on the outer wall of each set of rotating shafts 5002, and these blades are distributed in a ring-shaped interval on the outer wall of the rotating shaft 5002. The transmission bevel gear 5004 is fixedly arranged outside the support tube 3008 and meshes synchronously with the drive bevel gears 5003.

[0026] After rainwater enters the water inlet cylinder 200 through several inlets 2001, the rainwater acts on the arc-shaped blades 5001 on the outside of several rotating shafts 5002, thereby driving the rotating shafts 5002 to rotate synchronously. When the rotating shafts 5002 rotate, they drive several driving bevel gears 5003 to rotate. When the driving bevel gears 5003 rotate, they drive the support pipe 3008 to rotate through meshing with the transmission bevel gear 5004. The support pipe 3008 drives the scraper 3001 to move in a circular motion against the outer wall of the water inlet cylinder 200 through the connector, so as to scrape off the farmland silt intercepted on the outer wall of the first partition net 2002, thereby realizing the automatic cleaning of the first partition net 2002.

[0027] Please see Figure 4 as well as Figure 5 In one embodiment, the connector includes a connecting rod 3003 and an L-shaped support rod 3007. One end of the L-shaped support rod 3007 is fixedly connected to the outer wall of the support tube 3008, and the other end extends to the side of the water inlet cylinder 200 and is connected to the connecting rod 3003. The end of the connecting rod 3003 away from the L-shaped support rod 3007 is connected to the scraper 3001.

[0028] When rainwater drives several rotating shafts 5002 to rotate, thereby driving the support pipe 3008 to rotate, the support pipe 3008 drives the scraper 3001 to move in a circular motion against the outer wall of the water inlet cylinder 20 through the L-shaped support rod 3007 and the connecting rod 3003, so as to scrape off the farmland silt intercepted on the outer wall of the first partition net 2002, thereby realizing the automatic cleaning of the first partition net 200.

[0029] When the scraper blade 3001 moves in a circular motion around the water inlet cylinder 200, it experiences significant resistance due to the influence of rainwater, thus affecting its scraping effect on the farmland silt on the outer wall of the first partition net 2002. Therefore, please refer to [the relevant documentation / reference needed]. Figure 5In one embodiment, the scraper blade 3001 has an annular frame structure. When the scraper blade 3001 with the annular frame structure moves around the water inlet cylinder 200, rainwater can pass through the inside of the scraper blade 3001, thereby reducing the movement resistance of the scraper blade 3001 and ensuring that the scraper blade 3001 can smoothly scrape off the farmland silt on the outer wall of the first partition net 2002.

[0030] When the scraper blade 3001, with its annular frame structure, moves in a circular motion around the water inlet cylinder 200, rainwater passes through the inside of the scraper blade 3001. At this time, the rainwater easily carries along the farmland silt scraped off by the scraper blade 3001, causing the farmland silt to re-adhere to the outside of the first mesh 2002 after being scraped off. This results in poor cleaning performance of the first mesh 2002. To avoid this phenomenon, please refer to... Figure 5 In one embodiment, a second partition net 3002 is fixedly installed on the inner side of the scraper 3001, which has an annular frame structure. When the scraper 3001 moves in a circular motion around the water inlet cylinder 200, the scraper 3001 drives the second partition net 3002 to move synchronously. After the scraper 3001 scrapes off the farmland silt on the outer wall of the first partition net 2002, the farmland silt is intercepted on one side of the second partition net 3002 and cannot pass through the inner side of the scraper 3001 with the rainwater, and therefore cannot re-attach to the outside of the first partition net 2002, thus ensuring the cleaning effect of the first partition net 2002.

[0031] As the scraper blade 3001 continuously removes farmland silt from the outside of the first partition net 2002, the silt accumulates on one side of the scraper blade 3001. Excessive silt, under the influence of rainwater flow, acts on one side of the second partition net 3002, leading to blockage. This results in relatively high resistance to the scraper blade 3001's movement even after continuous circular motion for a certain period. Based on this, please refer to... Figure 5 In one embodiment, a limiting block 2003 is fixedly provided on the upper edge of the water inlet cylinder 200. The limiting block 2003 is located between two adjacent sets of water inlets 2001. The side wall of the limiting block 2003 is provided with an arc-shaped surface. The connecting rod 3003 is rotatably connected to the L-shaped support rod 3007. An annular stop block 3005 and an extension rod 3004 are fixedly provided on the side wall of the connecting rod 3003. One end of the extension rod 3004 away from the connecting rod 3003 extends to the top of the water inlet cylinder 200. The annular stop block 3005 and the L-shaped support rod 3007 are connected by an elastic rotating member 3006.

[0032] After the scraper blade 3001 removes farmland silt from the outside of a certain group of first partition nets 2002, as the scraper blade 3001 moves away from the outside of the first partition net 2002, it rotates to a position between the first partition net 2002 and the next group of first partition nets 2002. At this time, the extension rod 3004 on the side wall of the connecting rod 3003 acts on the arc-shaped surface of the limiting block 2003. The arc-shaped surface of the limiting block 2003 pushes the extension rod 3004, thereby driving the connecting rod 3003 to move. Compared to the rotation of the L-shaped support rod 3007, the connecting rod 3003 drives the scraper 3001 to rotate. When the scraper 3001 rotates, its side wall, which was originally attached to the outer wall of the water inlet cylinder 200, separates from the outer wall of the water inlet cylinder 200. The scraper 3001 and the diameter of the water inlet cylinder 200 form a certain tilt angle. At this time, rainwater can wash away the farmland silt intercepted on one side of the scraper 3001 and the second partition net 3002 from between the scraper 3001 and the water inlet cylinder 200. This achieves the cleaning of farmland silt on the sides of the scraper blade 3001 and the second partition net 3002, thereby reducing the movement resistance of the scraper blade 3001 and ensuring that the scraper blade 3001 can continuously perform circular motion around the water inlet cylinder 200; when the extension rod 3004 is pushed by the arc surface of the limiting block 2003, causing the connecting rod 3003 to rotate relative to the L-shaped support rod 3007, the elastic rotating member 3006 rotates and stores force, and the extension rod 3004 slides along the arc surface. When external rainwater is scraped away... After the mudslide 3001 and the second partition net 3002 are washed away, the extension rod 3004 separates from the arc-shaped surface of the limiting block 2003. The elastic rotating part 3006 drives the connecting rod 3003 to rotate in the opposite direction to the L-shaped support rod 3007, which in turn drives the scraper 3001 to rotate in the opposite direction, so that the side wall of the scraper 3001 is back in contact with the outer wall of the water inlet cylinder 200, so as to scrape away the mudslide outside the first partition net 2002 again.

[0033] In one embodiment, the elastic rotating element 3006 can be a spring or a torsion spring, and there is no limitation here.

[0034] Please see Figure 2 In one embodiment, the water inlet cylinder 200 is further provided with a sealing component 400. When no rainwater enters the water inlet cylinder 200 from the water inlet 2001, the sealing component 400 is used to seal the water inlet 2001, thereby preventing the rainwater collected inside the water storage cylinder 100 from being evaporated and lost due to the high temperature of the outside, thus improving the water storage effect.

[0035] Please see Figure 6In one embodiment, the sealing assembly 400 includes an elastic support member 4001 and an arc-shaped sealing plate 4002. The arc-shaped sealing plate 4002 is hinged to the inner wall of the water inlet cylinder 200. One end of the elastic support member 4001 is connected to the inner top wall of the water inlet cylinder 200, and the other end is connected to the arc-shaped sealing plate 4002, for providing elastic support to the arc-shaped sealing plate 4002.

[0036] When no rainwater enters the water inlet 200 through the inlet 2001, the arc-shaped sealing plate 4002, supported by the elastic support member 4001, adheres to the inner wall of the water inlet 200, thereby sealing the inlet 2001 and preventing rainwater from evaporating and escaping from the water storage tank 100. When the rainy season arrives, rainwater can pass through the inlet 2001 and push the arc-shaped sealing plate 4002, causing it to rotate relative to the inner wall of the water inlet 200, thus opening the inlet 2001. Rainwater then enters the water inlet 200 through the open inlet 2001 and then enters the water storage tank 100, achieving the collection and storage of rainwater.

[0037] In one embodiment, the elastic support 4001 can be a spring or a metal sheet, and there is no limitation on this.

[0038] Please see Figure 1 , Figure 3 as well as Figure 4 In one embodiment, the pumping assembly includes a water pump (not shown) and a water pipe 1001. The water pump is fixedly installed at the bottom inside the water storage tank 100. One end of the water pipe 1001 is connected to the water pump, and the other end passes through the inside of the support pipe 3008 and extends to the outside of the water inlet tank 200.

[0039] When the dry season arrives, the rainwater collected inside the water storage tank 100 is pumped into the water pipe 1001 by a water pump, and then transported to the farmland by the water pipe 1001 to irrigate the farmland.

[0040] The working principle of this invention is as follows: When the rainy season arrives, rainwater flows through the inlet 2001 and pushes the arc-shaped sealing plate 4002, causing it to rotate relative to the inner wall of the inlet cylinder 200. This opens the inlet 2001, allowing rainwater to enter the inlet cylinder 200. The rainwater then flows through the opening at the bottom of the inlet cylinder 200 into the storage tank 100, thus collecting and storing the rainwater. As the rainwater passes through the inlet 2001, the farmland silt carried in it is intercepted by the first mesh 2002, preventing it from entering the storage tank 100 and thus avoiding encroachment on its internal space, thereby increasing the storage capacity of the storage tank 100. Inside the cylinder 200, several arc-shaped blades 5001 act, thereby driving the rotating shaft 5002 to rotate. The rotating shaft 5002 drives the drive bevel gear 5003 to rotate. Through the meshing of the drive bevel gear 5003 and the transmission bevel gear 5004, the support tube 3008 rotates. The support tube 3008, through the L-shaped support rod 3007 and the connecting rod 3003, drives the scraper 3001 to move circumferentially against the outer wall of the inlet cylinder 200. When the scraper 3001 moves circumferentially, it scrapes away the farmland silt intercepted outside the first partition net 2002, thus cleaning the first partition net 2002 and preventing the farmland silt from clogging the first partition net 2002. To ensure a continuous flow of rainwater into the water storage tank 100 and improve rainwater collection efficiency; as the scraper blade 3001 removes farmland silt from outside the first partition net 2002, the silt remains on one side of the scraper blade 3001 and the second partition net 3002. When the scraper blade 3001 moves away from outside the first partition net 2002, the extension rod 3004 acts on the arc-shaped surface of the limiting block 2003. The arc-shaped surface pushes the extension rod 3004, which in turn drives the connecting rod 3003 to rotate relative to the L-shaped support rod 3007. The connecting rod 3003 drives the scraper blade 3001 to rotate, causing the scraper blade 3001 to separate from the outer wall of the water inlet tank 200. The scraper blade 3001 is tilted at a certain angle, and a certain gap is formed between the scraper blade 3001 and the water inlet cylinder 200. As the scraper blade 3001 continues to move in a circular motion, the rainwater will wash away the farmland silt that is trapped on the scraper blade 3001 and the second partition net 3002 through the gap between the scraper blade 3001 and the water inlet cylinder 200. This prevents the scraper blade 3001 from having too much farmland silt on the scraper blade 3001 and the first partition net 3002, which would increase the movement resistance of the scraper blade 3001. This ensures that the scraper blade 3001 can move in a circular motion smoothly, thereby continuously scraping away the farmland silt outside the first partition net 2002.

[0041] In this embodiment of the invention, by burying the water storage tank 100 inside the farmland surface, when the rainy season arrives, rainwater enters the water inlet tank 200 through several inlets 2001 on the side wall of the inlet tank 200, and then enters the water storage tank 100 through the opening at the lower end of the inlet tank 200, thereby achieving rainwater collection. During the process of rainwater entering the water storage tank 200 from the inlets 2001, the rainwater passes through the first mesh 2002, while the farmland silt carried in the rainwater is intercepted by the first mesh 2002, thus preventing farmland silt from entering the water storage tank 100 and encroaching on the internal space of the water storage tank 100, thereby affecting the rainwater collection effect of the water storage tank 100 and achieving rainwater purification. When rainwater enters the water inlet tank 200, the hydrodynamic drive component 500... The sludge scraper 300 rotates around the inlet cylinder 200, scraping away farmland silt trapped outside the first mesh 2002 to prevent it from clogging the mesh and ensuring rainwater can smoothly enter the storage cylinder 100 through the inlet 2001 for successful collection. During the dry season, the pumping unit pumps the collected rainwater from the storage cylinder 100 to the farmland for irrigation. Compared to existing technologies, this method integrates rainwater collection, purification, and irrigation, achieving water conservation. Furthermore, it effectively intercepts and removes farmland silt during rainwater collection, improving water storage capacity and collection efficiency.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity, and those skilled in the art should consider the specification as a whole.

Claims

1. An integrated device for rainwater harvesting, water purification, drought resistance, and irrigation in farmland, characterized in that, It includes a water storage tank (100), a water inlet tank (200), a sludge scraper assembly (300), a hydrodynamic drive assembly (500), and a pumping assembly. The water storage tank (100) is buried inside the farmland surface. The inlet cylinder (200) is fixedly installed on the top of the water storage cylinder (100) and vertically penetrates the top wall of the water storage cylinder (100). The lower end of the inlet cylinder (200) is open. The water inlet cylinder (200) is located above the water storage cylinder (100) and has several water inlets (2001) on its side wall. Each group of water inlets (2001) is fixedly equipped with a first partition net (2002). The sludge scraping assembly (300) is disposed above the water storage tank (100) and is attached to the outer wall of the water inlet tank (200). The hydrodynamic drive assembly (500) is installed inside the inlet cylinder (200). When rainwater enters the water storage cylinder (100) from the inlet (2001), the hydrodynamic drive assembly (500) drives the sludge scraping assembly (30) to move circumferentially around the outer wall of the inlet cylinder (200) to scrape away the sludge on the outer wall of the first mesh (2002). The pumping assembly is installed inside the water storage tank (100) and is used to pump rainwater inside the water storage tank (100) to the farmland to realize the irrigation of the farmland.

2. The integrated rainwater harvesting, water purification, drought-resistant irrigation device for farmland according to claim 1, characterized in that, The sludge scraping assembly (30) includes a scraper blade (3001), a connector, and a support tube (3008). The sidewall of the scraper blade (3001) is in contact with the outer circumferential wall of the water inlet cylinder (200). One end of the support tube (3008) extends above the water inlet cylinder (200), and the other end passes through the top wall of the water inlet cylinder (200) and extends into the interior of the water inlet cylinder (200). The support pipe (3008) is vertically distributed along the axis of the water inlet cylinder (200). The support pipe (3008) is rotatably engaged with the top wall of the water inlet cylinder (200). One end of the connector is connected to the support pipe (3008), and the other end is connected to the mud scraper (3001).

3. The integrated rainwater harvesting, water purification, drought-resistant irrigation device for farmland according to claim 2, characterized in that, The hydrodynamic drive assembly (500) includes an arc-shaped blade (5001), a rotating shaft (5002), a drive bevel gear (5003), and a transmission bevel gear (5004). Several sets of rotating shafts (5002) are provided in a one-to-one correspondence with the water inlets (2001). The rotating shafts (5002) are arranged in a one-to-one correspondence below the water inlets (2001). One end of each rotating shaft (5002) is rotatably connected to the inner wall of the water inlet cylinder (200), and the other end is fixedly connected to a set of driving bevel gears (5003). Each set of rotating shafts (5002) has a number of arc-shaped blades (5001) fixedly arranged on the outer wall. The arc-shaped blades (5001) are arranged in a ring-shaped interval on the outer wall of the rotating shaft (5002). The transmission bevel gear (5004) is fixedly arranged outside the support tube (3008) and meshes synchronously with the number of driving bevel gears (5003).

4. The integrated rainwater harvesting, water purification, drought-resistant irrigation device for farmland according to claim 2, characterized in that, The connector includes a connecting rod (3003) and an L-shaped support rod (3007). One end of the L-shaped support rod (3007) is fixedly connected to the outer wall of the support tube (3008), and the other end extends to the side of the water inlet cylinder (200) and is connected to the connecting rod (3003). The end of the connecting rod (3003) away from the L-shaped support rod (3007) is connected to the mud scraper (3001).

5. The integrated rainwater harvesting, water purification, drought-resistant irrigation device for farmland according to claim 4, characterized in that, The scraper (3001) has a ring frame structure.

6. The integrated rainwater harvesting, water purification, drought-resistant irrigation device for farmland according to claim 5, characterized in that, A second partition net (3002) is fixedly installed on the inner side of the scraper blade (3001) which has a ring frame structure.

7. The integrated rainwater harvesting, water purification, drought-resistant irrigation device for farmland according to claim 6, characterized in that, A limiting block (2003) is fixedly installed on the upper edge of the water inlet cylinder (200). The limiting block (2003) is located between two adjacent sets of water inlets (2001). The side wall of the limiting block (2003) is provided with an arc-shaped surface. The connecting rod (3003) is rotatably connected to the L-shaped support rod (3007). An annular stop (3005) and an extension rod (3004) are fixedly provided on the side wall of the connecting rod (3003). The end of the extension rod (3004) away from the connecting rod (3003) extends to the top of the water inlet cylinder (200). The annular stop (3005) and the L-shaped support rod (3007) are connected by an elastic rotating member (3006).

8. The integrated rainwater harvesting, water purification, drought-resistant irrigation device for farmland according to claim 1, characterized in that, The water inlet cylinder (200) is also provided with a sealing component (400). When no rainwater enters the water inlet cylinder (2001) from the water inlet (2001), the sealing component (400) is used to seal the water inlet (2001).

9. The integrated device for farmland rainwater harvesting, water purification, drought resistance, and irrigation according to claim 8, characterized in that, The sealing assembly (400) includes an elastic support (4001) and an arc-shaped sealing plate (4002). The arc-shaped sealing plate (4002) is hinged to the inner wall of the water inlet cylinder (200). One end of the elastic support member (4001) is connected to the inner top wall of the water inlet cylinder (200), and the other end is connected to the arc-shaped sealing plate (4002) to provide elastic support for the arc-shaped sealing plate (4002).

10. The integrated device for farmland rainwater harvesting, water purification, drought resistance, and irrigation according to claim 2, characterized in that, The pumping assembly includes a water pump and a water pipe (1001). The water pump is fixedly installed at the bottom inside the water storage tank (100). One end of the water pipe (1001) is connected to the water pump, and the other end passes through the inside of the support pipe (3008) and extends to the outside of the water inlet tank (200).

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