Floating type paddy field furrow water quality filtering and recycling integrated device

Abstract

The application provides a floating type paddy field ridge furrow water quality filtering and recycling integrated device. The floating type paddy field ridge furrow water quality filtering and recycling integrated device comprises a floating water suction head, a ring-shaped floating body assembly for providing floating force, and a water suction assembly suspended in the center of the ring-shaped floating body assembly, the water suction assembly being used for sucking water from the upper layer of a water body; a filtering bin fixedly arranged at the bottom of the ridge furrow, a spiral blade assembly arranged in the inside of the filtering bin along the central axis of the filtering bin, and a filter material reaction layer annularly arranged on the radial outside of the spiral blade assembly; a telescopic flow guide pipe connected with the water suction assembly and the filtering bin and used for guiding water from the floating water suction head into the filtering bin; and a base connected with the bottom of the filtering bin and used for fixing the filtering bin at the bottom of the ridge furrow. The floating type paddy field ridge furrow water quality filtering and recycling integrated device provided by the embodiment of the application can adapt to the change of the water level of the ridge furrow, has low energy consumption, can efficiently remove organic pollutants and pesticide residues, and has the functions of water and fertilizer recycling.

Description

Technical Field

[0001] This invention relates to the fields of water environment management and agricultural water conservancy engineering technology, and provides a floating integrated device for water filtration and reuse in open ditches in paddy fields. Background Technology

[0002] Open ditches, as the primary drainage system for farmland, are rich in nutrients such as nitrogen and phosphorus, as well as certain concentrations of pesticide residues and chemical oxygen demand (COD). Direct discharge into river networks without treatment not only wastes water resources but may also cause agricultural non-point source pollution. Direct reuse, on the other hand, may result in pesticide residues that negatively impact crop growth and soil ecological security. From the perspective of efficient water resource utilization and green agricultural development, on-site filtration of paddy field drainage and reuse for farmland irrigation offers multiple advantages, including reducing fresh water intake, minimizing nutrient loss, alleviating agricultural non-point source pollution loads, and improving water and fertilizer utilization efficiency. However, current technologies for treating farmland drainage often involve constructing large artificial wetlands and sedimentation tanks, which require large land areas and incur high infrastructure and maintenance costs. Furthermore, the surface of open ditch water is often covered with a large amount of floating debris such as duckweed and weeds, easily clogging traditional fixed intakes and leading to low filtration efficiency. Summary of the Invention

[0003] This invention provides a floating integrated device for filtering and reusing water in open ditches in paddy fields. It can adapt to changes in the water level of the open ditches, consumes little energy, can efficiently remove organic pollutants and pesticide residues, and also has the function of water and fertilizer reuse.

[0004] This invention provides a floating integrated device for water filtration and reuse in open ditches of paddy fields, comprising: A floating water intake head includes an annular float assembly for providing buoyancy and a water intake component suspended at the center of the annular float assembly, the water intake component being used to draw water from the upper layer of a body of water. A filter chamber is fixedly installed at the bottom of an open ditch. A spiral blade assembly is arranged inside the filter chamber along its central axis. A filter media reaction layer is arranged in a ring on the radial outer side of the spiral blade assembly. A telescopic guide tube connects the water absorption assembly and the filter chamber, and is used to guide water from the floating water absorption head into the filter chamber; The base is connected to the bottom of the filter chamber and is used to fix the filter chamber to the bottom of the open ditch.

[0005] According to one embodiment of the present invention, the water-absorbing assembly includes: The flow deflector has a downwardly inclined conical structure, and the side wall of the flow deflector has a filter opening; The water suction head is located below the flow guide cover and is connected to the telescopic flow guide pipe. A filter screen is installed inside the water suction head.

[0006] According to one embodiment of the present invention, the floating water suction head further includes a mesh filter structure disposed between the annular float assembly and the water suction assembly for intercepting floating objects in the water.

[0007] According to one embodiment of the present invention, the helical blade assembly is a passively rotating structure, and the upper end and the lower end of the helical blade assembly are connected to the outer shell of the filter chamber and can rotate freely around the central axis.

[0008] According to one embodiment of the present invention, a plurality of connecting holes or slits are uniformly arranged on the inner wall of the filter media reaction layer in the horizontal direction, so that water flows through the connecting holes or slits to the side wall and contacts the filter media reaction layer under the rotation of the spiral blade assembly.

[0009] According to one embodiment of the present invention, the ratio of the outer diameter of the spiral blade to the inner diameter of the filter chamber is in the range of 0.8 to 0.9, the ratio of the pitch of the spiral blade to the outer diameter of the spiral blade is in the range of 0.5 to 0.8, and the blade tilt angle of the spiral blade is in the range of 15 to 25 degrees.

[0010] According to one embodiment of the present invention, the filter media reaction layer is filled with granular floating filter media for removing chemical oxygen demand and / or modified biochar for removing pesticide residues.

[0011] According to one embodiment of the present invention, the base is provided with a plurality of pointed conical legs, which are used to insert into the soil at the bottom of the trench.

[0012] According to one embodiment of the present invention, the base includes a main body composed of two cylindrical shells, and a connecting pipe for filtering filter media residue is provided between the two cylindrical shells.

[0013] According to one embodiment of the present invention, a lateral drain outlet is provided on the main side wall of the base, and a check valve is provided at the lateral drain outlet.

[0014] The floating paddy field open ditch water filtration and reuse integrated device provided by the present invention effectively intercepts various floating objects and suspended impurities through a three-stage pre-filtration process consisting of a mesh filter structure, a flow guide hood filter port, and a water suction head filter screen barrel. The strong swirling current generated by the spiral blade assembly in the filter chamber, combined with the targeted filter media in the filter media reaction layer, significantly improves the removal efficiency of chemical oxygen demand and pesticide residues. The purified open ditch water meets the standards for farmland irrigation reuse, avoiding adverse effects on crop growth and soil ecology. The annular floating assembly drives the water suction assembly to automatically adjust its height according to the water level, and the telescopic flow guide pipe flexibly adapts to changes in water level, ensuring that water is always drawn from the upper layer of the water body, reducing bottom sediment disturbance and impurity intake. The multi-stage filtration structure and the swirling scouring effect of the spiral blades significantly reduce the risk of pipe and filter media blockage, extend the continuous operation time of the equipment, and reduce maintenance frequency. The spiral blade assembly adopts a passive rotation design, requiring no additional power and relying on the impact force of the water flow itself to drive it, significantly reducing energy consumption and making it suitable for scenarios where there is no power supply in farmland open ditches. The structure of each component of the equipment is simple, and the mesh filter structure and filter screen can be disassembled and cleaned. The side drain port on the base facilitates the drainage of residual water, and the support leg design makes installation and fixing quick and efficient. Overall, the maintenance difficulty and cost are low. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic perspective view of the floating paddy field open ditch water filtration and reuse integrated device provided by the present invention.

[0017] Figure 2 This is a schematic perspective view of the floating water suction head provided by the present invention.

[0018] Figure 3 This is a schematic perspective view of the annular float assembly provided by the present invention.

[0019] Figure 4 This is a schematic perspective view of the water-absorbing component provided by the present invention.

[0020] Figure 5 This is a schematic cross-sectional view of the filter chamber and spiral blade assembly provided by the present invention.

[0021] Figure 6 This is a schematic cross-sectional view of the filter chamber provided by the present invention.

[0022] Figure 7 This is a schematic perspective view of the connecting pipe provided by the present invention.

[0023] Figure label: 100. Floating suction head; 102. Annular float assembly; 104. Suction assembly; 106. Filter chamber; 108. Spiral blade assembly; 110. Filter media reaction layer; 112. Telescopic guide pipe; 114. Base; 116. Flow guide cover; 118. Suction head; 120. Filter screen barrel; 122. Slit; 124. Support leg; 126. Drain outlet; 128. Connecting pipe; 130. Check valve; 132. Water pump. Detailed Implementation

[0024] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0025] like Figures 1 to 7 As shown, this embodiment of the invention provides a floating integrated device for water filtration and reuse in open ditches of paddy fields, comprising: The floating suction head 100 includes an annular float assembly 102 for providing buoyancy and a suction assembly 104 suspended at the center of the annular float assembly 102. The suction assembly 104 is used to draw water from the upper layer of the water body. The filter chamber 106 is fixedly installed at the bottom of the open ditch. Along the central axis of the filter chamber 106, a spiral blade assembly 108 is arranged inside the filter chamber 106, and a filter media reaction layer 110 is arranged in a ring on the radial outer side of the spiral blade assembly 108. The telescopic guide tube 112 connects the water absorption assembly 104 and the filter chamber 106, and is used to guide water from the floating water suction head 100 into the filter chamber 106. The base 114 is connected to the bottom of the filter chamber 106 and is used to fix the filter chamber 106 to the bottom of the open ditch.

[0026] The floating paddy field open ditch water filtration and reuse integrated device provided in this embodiment of the invention effectively intercepts various floating objects and suspended impurities through a three-stage pre-filtration process: a mesh filtration structure, a flow guide hood 116 filter port, and a water suction head 118 filter screen barrel 120. The strong swirling current generated by the spiral blade assembly 108 in the filter chamber 106, combined with the targeted filter media in the filter media reaction layer 110, significantly improves the removal efficiency of chemical oxygen demand and pesticide residues. The purified open ditch water meets the standards for farmland irrigation reuse, avoiding adverse effects on crop growth and soil ecology. The annular floating body assembly 102 drives the water suction assembly 104 to automatically adjust its height according to the water level, and the telescopic flow guide pipe 112 flexibly adapts to changes in water level, ensuring that water is always drawn from the upper layer of the water body, reducing bottom sediment disturbance and impurity intake. The multi-stage filtration structure and the swirling scouring effect of the spiral blades significantly reduce the risk of pipe and filter media blockage, extend the continuous operation time of the equipment, and reduce maintenance frequency. The spiral blade assembly 108 adopts a passive rotation design, requiring no additional power and relying on the impact force of the water flow itself to drive it, which greatly reduces energy consumption and is suitable for scenarios where there is no power supply in farmland open ditches. The structure of each component of the equipment is simple. The mesh filter structure and filter screen barrel 120 can be disassembled and cleaned. The side drain port 126 of the base 114 facilitates the drainage of residual water. The support leg 124 design makes installation and fixing quick and efficient. The overall maintenance difficulty and cost are low.

[0027] Please continue reading Figures 1 to 7 The floating paddy field open ditch water filtration and reuse integrated device provided in this embodiment of the invention achieves efficient purification and recycling of open ditch water through the coordinated design of floating water intake, telescopic flow guidance, spiral disturbance filtration and stable fixation.

[0028] The core of the floating suction head 100 consists of an annular float assembly 102 and a suction assembly 104. The annular float assembly 102 is a closed, hollow annular structure with continuous curved surfaces on both its outer and inner walls, providing excellent buoyancy and water stability. It supports the suction assembly 104 in suspension on the water surface and automatically adjusts its height according to changes in the open ditch water level. The inner wall of the annular float assembly 102 is fixed to the suction assembly 104 via multiple connectors, suspending the suction assembly 104 at the center of the float. This ensures that the water intake part of the suction assembly 104 is always in the upper-middle layer of the water, minimizing disturbance to the bottom sediment of the ditch.

[0029] The water intake assembly 104 includes a flow guide shroud 116 and a water intake head 118. The flow guide shroud 116 has a downwardly inclined conical structure with evenly spaced filter openings on its side walls. The water intake head 118 is located below the flow guide shroud 116 and is sealed and connected to the telescopic flow guide pipe 112. A filter screen barrel 120 is detachably installed inside the head. The floating water intake head 100 is also equipped with a mesh filter structure, which is horizontally arranged between the annular float assembly 102 and the water intake assembly 104, forming a pre-filter barrier surrounding the water intake assembly 104 to completely intercept floating objects such as duckweed and straw leaves in the water. In addition, two steel wire ropes connect the floating water intake head 100 to the filter chamber 106 to restrict its horizontal movement and ensure a stable water intake position.

[0030] The filter chamber 106 is fixed to the bottom of the open ditch, and a spiral blade assembly 108 is arranged vertically along the central axis. This assembly is a passively rotating structure. The upper and lower ends of the central shaft are connected to the outer shell of the filter chamber 106 through low-friction connectors, and can rotate freely around the central axis without additional power, relying on the impact force of the water flow to drive the rotation. The spiral blades can ensure that a strong vortex is generated during rotation, extending the hydraulic residence time of the water flow.

[0031] A filter media reaction layer 110 is arranged annularly on the radially outer side of the spiral blade assembly 108. The inner wall of the filter media reaction layer 110 has horizontally uniformly formed connecting holes or slits 122 to facilitate water flow through the sidewalls and ensure full contact with the filter media under swirling action. The filter media reaction layer 110 is filled with granular float filter media and / or modified biochar. The granular float filter media is used to remove chemical oxygen demand (COD), and the modified biochar is used to remove pesticide residues. The two filter media can be used alone or in combination to achieve targeted purification.

[0032] The telescopic guide pipe 112 is made of flexible material. Its upper end is sealed to the suction head 118 of the water suction assembly 104, and its lower end is connected to the upper water inlet of the filter chamber 106. It can flexibly extend and retract according to the water level changes of the floating suction head 100, always maintaining a sealed connection to ensure smooth water flow into the filter chamber 106. The length of the telescopic guide pipe 112 is adapted to the water level fluctuation range of the open ditch, avoiding pipe pulling or breakage caused by water level changes, and ensuring the continuity of water intake and diversion.

[0033] The base 114 is fixedly connected to the bottom of the filter chamber 106. The main body consists of two cylindrical shells and a connecting pipe 128. The two cylindrical shells respectively receive the water outlet of the filter chamber 106 and connect to the water pump 132. The connecting pipe 128 has a filtration function, which can intercept filter media residue and fine impurities. Several pointed conical feet 124 are evenly arranged at the bottom of the base 114. The feet 124 can be inserted into the soil at the bottom of the ditch to achieve stable fixation of the equipment, prevent displacement or tilting caused by water flow impact, and minimize disturbance to the soil structure at the bottom of the open ditch.

[0034] The base 114 has a side drain 126 on its side wall. A check valve 130 is installed at the drain 126 to allow only the internal residual water to be discharged outward, preventing external water or impurities from entering. This facilitates the quick drainage of residual water during equipment maintenance, reduces the weight of handling, and avoids corrosion of internal components and secondary water pollution.

[0035] According to one embodiment of the present invention, the water-absorbing assembly 104 includes: The flow deflector 116 has a downwardly inclined conical structure, and the side wall of the flow deflector 116 is provided with a filter port; The water suction head 118 is located below the flow guide shroud 116 and is connected to the telescopic flow guide pipe 112. A filter screen barrel 120 is installed inside the water suction head 118.

[0036] In one embodiment of the present invention, the flow guide 116 is generally in the shape of a downwardly inclined cone, with filter openings evenly distributed on its sidewalls. The inclined structure can use buoyancy to guide floating objects such as duckweed away from the water absorption area, preventing floating objects from directly clogging the filter openings. The filter openings are distributed circumferentially along the sidewalls of the flow guide 116, ensuring uniform water absorption from the upper and middle layers of the water body, while initially intercepting larger suspended impurities.

[0037] The suction head 118 is fixedly installed below the flow guide shroud 116, forming an integrated structure with the flow guide shroud 116. Its lower end is sealed and connected to the telescopic flow guide pipe 112 to ensure smooth water flow into the filter chamber 106. A filter screen barrel 120 is detachably installed inside the suction head 118. The filter pore size of the filter screen barrel 120 is adapted to the water purification needs of open ditch, which can intercept fine suspended particles in the water body for a second time, further purifying the incoming water quality and reducing the risk of clogging of the subsequent filter chamber 106.

[0038] The connection between the flow guide shroud 116 and the suction head 118 is smooth and without sharp edges, which reduces water flow resistance and prevents impurities from accumulating at the connection, ensuring the long-term stable operation of the suction assembly 104.

[0039] The conical inclined structure of the flow guide shroud 116, in conjunction with the side wall filter port, uses the buoyancy of the floating objects to guide them away from the water absorption area. The filter port and the filter screen barrel 120 form a two-stage filtration, which intercepts suspended impurities and floating objects of different sizes, greatly reducing the probability of blockage of the water absorption component 104 and subsequent pipelines, and ensuring the continuous and stable operation of the equipment.

[0040] According to one embodiment of the present invention, the floating water suction head 100 further includes a mesh filter structure disposed between the annular float assembly 102 and the water suction assembly 104 for intercepting floating objects in the water.

[0041] In one embodiment of the present invention, a mesh filter structure is horizontally arranged between the annular float assembly 102 and the water absorption assembly 104, and is firmly fixed to the annular float assembly 102 and the water absorption assembly 104 by connectors, forming an annular filter barrier surrounding the water absorption assembly 104. The mesh filter structure can effectively intercept common floating objects such as duckweed and straw leaves, while not affecting the smooth flow of water.

[0042] The mesh filter structure is made of corrosion-resistant, high-strength materials, which can resist the erosion of open ditch water and the impact of floating objects, and is not easily deformed or damaged. Its edges fit tightly against the inner wall of the annular float assembly 102 without obvious gaps, preventing floating objects from bypassing the filter structure and entering the water absorption assembly 104 through gaps, thus ensuring comprehensive filtration.

[0043] The mesh filter structure is detachable, making it easy to regularly remove and clean the attached floating objects. Maintenance is simple and does not affect the overall operation of the equipment.

[0044] The mesh filter structure forms a pre-filtration barrier before the water absorption component 104, intercepting floating objects in the water in advance. Together with the filter port of the water absorption component 104 and the filter screen barrel 120, it forms a three-stage filtration system, further improving the quality of the incoming water, reducing the processing load of the subsequent filter chamber 106, and ensuring the filtration and reuse effect.

[0045] According to one embodiment of the present invention, the helical blade assembly 108 is a passively rotating structure. The upper end and the lower end of the helical blade assembly 108 are connected to the outer shell of the filter chamber 106 and can rotate freely around the central axis.

[0046] In one embodiment of the present invention, the helical blade assembly 108 is arranged vertically along the central axis of the filter chamber 106, and mainly consists of a central shaft and helical blades fixed on the central shaft. The upper and lower ends of the central shaft are connected to the outer shell of the filter chamber 106 through a rotating connector. The connector is made of a material with a low coefficient of friction to ensure that the helical blade assembly 108 can rotate freely and flexibly around the central axis without jamming.

[0047] The spiral blade assembly 108 has no additional power input and is a passive rotation structure, driven by the impact force of the water flow entering the filter chamber 106. After the water flows in from the top of the filter chamber 106, it impacts the surface of the spiral blades, generating torque to drive the entire spiral blade assembly 108 to rotate. This eliminates the need for motors or other power equipment, simplifying the structural design.

[0048] The spiral blades are firmly connected to the central shaft, and the blade surface is smooth without protrusions or depressions, which reduces water flow resistance and prevents impurities from accumulating on the blade surface, ensuring rotation efficiency and service life.

[0049] The spiral blade assembly 108 adopts a passive rotation design, relying on the impact force of the water flow itself to drive it. No additional power input is required, which greatly reduces the energy consumption of the equipment and meets the requirements of energy conservation and environmental protection. It is especially suitable for scenarios such as open ditches in farmland where there is no power supply.

[0050] According to one embodiment of the present invention, a plurality of connecting holes or slits 122 are uniformly arranged on the inner wall of the filter media reaction layer 110 in the horizontal direction, so that water flows through the connecting holes or slits 122 to the side wall and comes into contact with the filter media reaction layer 110 under the rotation of the spiral blade assembly 108.

[0051] In one embodiment of the present invention, the filter media reaction layer 110 is arranged in a ring along the radial outer side of the filter chamber 106, and a gap is left between its inner wall and the spiral blade assembly 108 to form a water flow channel. The connecting holes or slits 122 on the inner wall are evenly distributed in the horizontal direction and penetrate through the thickness of the inner wall, so that water can seep from one side of the channel to the other side of the filter media reaction layer 110.

[0052] The regular shape of the connecting holes or slits 122 ensures smooth water flow while preventing filter media from leaking out. The uniform spacing between adjacent connecting holes or slits 122 ensures that water can penetrate evenly into all areas of the filter media reaction layer 110 without any dead corners.

[0053] The inner wall surface of the filter media reaction layer 110 is smooth, and the edges of the connecting holes or slits 122 are free of burrs, which reduces water flow resistance and impurity accumulation, ensures smooth seepage, and protects the filter media from being scratched.

[0054] The swirling effect generated by the rotation of the spiral blade assembly 108, combined with the evenly distributed connecting holes or slits 122 on the inner wall, allows water to flow evenly and quickly into the filter media reaction layer 110, greatly increasing the contact area and contact time between the water flow and the filter media. This enhances the adsorption and degradation effect of the filter media on chemical oxygen demand and pesticide residues, significantly improving the water purification efficiency.

[0055] According to one embodiment of the present invention, the ratio of the outer diameter of the spiral blade to the inner diameter of the filter chamber 106 ranges from 0.8 to 0.9, the ratio of the pitch of the spiral blade to the outer diameter of the spiral blade ranges from 0.5 to 0.8, and the blade tilt angle α of the spiral blade ranges from 15 to 25 degrees.

[0056] In one embodiment of the present invention, the ratio of the outer diameter of the spiral blade to the inner diameter of the filter chamber 106 is in the range of 0.8 to 0.9, ensuring that there is a suitable gap between the spiral blade and the inner wall of the filter chamber 106. This maximizes the use of the internal space of the filter chamber 106 and enhances the water flow disturbance effect, while preventing impurities from accumulating or excessive rotational resistance due to too small a gap.

[0057] The ratio of the pitch of the spiral blade to the outer diameter of the spiral blade ranges from 0.5 to 0.8, which makes the pitch size match the outer diameter of the blade. This allows the water to be effectively pushed downward during rotation, while generating a strong swirling effect, which prolongs the residence time of the water in the filter chamber 106 and provides sufficient reaction time for pollutant removal.

[0058] The blade tilt angle of the helical blade is in the range of 15 to 25 degrees, which can optimize the contact angle between the water flow and the blade, maximize the impact force of the water flow on the blade, ensure that the helical blade assembly 108 can rotate efficiently under the action of water flow, and at the same time enhance the disturbance intensity of the water flow, and promote the full mixing of the water flow and the filter media reaction layer 110.

[0059] The various dimensional parameters of the spiral blades are matched in a coordinated manner to ensure that they can rotate stably and efficiently within the filter chamber 106, thereby exerting the best water flow disturbance and guiding effect.

[0060] The reasonable size ratio and blade tilt angle enable the spiral blade assembly 108 to generate a swirling field with suitable strength and good stability when rotating, which prolongs the hydraulic residence time of water in the filter chamber 106, and promotes the deep contact and mixing of water with the filter media reaction layer 110. This greatly improves the removal efficiency of the filter media for chemical oxygen demand and pesticide residues, ensuring that the effluent water quality meets the standards.

[0061] According to one embodiment of the present invention, the filter media reaction layer 110 is filled with particulate float filter media for removing chemical oxygen demand and / or modified biochar for removing pesticide residues.

[0062] In one embodiment of the present invention, the filter media reaction layer 110 has an annular cavity structure, which is uniformly filled with one or a mixture of two of the following filter media: granular floating ball filter media and modified biochar. The granular floating ball filter media is made of a porous material, which has a large specific surface area and good adsorption performance, and can efficiently adsorb and decompose the chemical oxygen demand in the water. At the same time, it has a certain biological carrier function, which can promote the attachment and growth of microorganisms and enhance the biodegradation process.

[0063] Modified biochar is prepared from biomass raw materials such as rice husks and undergoes modification treatment. Its surface is porous and rich in active functional groups, which gives it a strong adsorption capacity for pesticide residues in water. It can effectively remove pesticides and other harmful substances, ensuring the safety of reclaimed water quality.

[0064] When using mixed filter media, granular floating filter media and modified biochar are uniformly mixed and filled according to a preset ratio. The two types of filter media work synergistically to remove chemical oxygen demand and pesticide residues respectively, achieving multiple purification goals. The filling density of the filter media reaction layer 110 is appropriate to ensure smooth water flow and sufficient contact between the filter media and the water flow.

[0065] Granular floating filter media and modified biochar are used to specifically remove chemical oxygen demand and pesticide residues from water. When used alone, the filter media can meet specific purification needs. When used in combination, multiple pollutants can be removed simultaneously, resulting in comprehensive and efficient purification. It can purify open ditch water to meet the standards for reuse in farmland irrigation.

[0066] According to one embodiment of the present invention, the base 114 is provided with a plurality of pointed conical feet 124, which are used to insert into the soil at the bottom of the trench.

[0067] In one embodiment of the present invention, the support legs 124 are cone-shaped and evenly distributed at the bottom of the base 114, integrally formed with or firmly fixed to the main body of the base 114 to form a stable support structure. The support legs 124 are made of high-strength, corrosion-resistant materials, with sharp tips, making them easy to insert into the soil at the bottom of the open ditch during installation to fix the base 114.

[0068] The 124-inch support leg is designed with a reasonable length to ensure that it can provide sufficient support and resistance to lateral displacement after being inserted into the soil, preventing the equipment from shifting or tilting under the impact of water flow or external forces.

[0069] The connection between the base 114 and the support leg 124 is reinforced to withstand the load during equipment installation and operation, preventing the support leg 124 from bending or breaking and ensuring the stability of the overall equipment structure.

[0070] The pointed, conical support 124 can penetrate deep into the soil at the bottom of the trench to form a stable anchoring structure, effectively resisting external interference such as water flow impact and wind waves, preventing the equipment from shifting or tilting, ensuring that the filter chamber 106 is always in the preset working position, and ensuring the normal realization of filtration and water absorption functions.

[0071] According to one embodiment of the present invention, the base 114 includes a main body composed of two cylindrical shells, and a connecting pipe 128 for filtering filter media residue is provided between the two cylindrical shells.

[0072] In one embodiment of the present invention, the base 114 is composed of two independent cylindrical shells, which are located at the two ends of the connecting pipe 128, forming a symmetrical structure. The upper end of the left cylindrical shell is sealed to the bottom of the filter chamber 106 to receive the purified water flowing out of the filter chamber 106; one end of the right cylindrical shell can be connected to the water pump 132 to extract the purified water for reuse.

[0073] The connecting pipe 128 connects the two cylindrical shells laterally, making the interiors of the two cylindrical shells interconnected and forming a complete water flow channel. The internal structure of the connecting pipe 128 is designed based on the principle of filtration and has a filtration function. It can intercept a small amount of filter media residue or fine impurities that fall off from the filter chamber 106, preventing them from entering the water pump 132 or subsequent reuse pipeline, causing blockage or equipment damage.

[0074] The connection between the connecting pipe 128 and the two cylindrical shells is well sealed and there is no water leakage. The inner wall of the connecting pipe 128 is smooth, which facilitates water flow and the interception of impurities, and also facilitates the regular cleaning of accumulated residue inside.

[0075] The filtration function of the connecting pipe 128 can effectively intercept filter media residue and fine impurities, preventing them from entering the water pump 132 or the reuse pipeline. This protects downstream equipment and pipelines from blockage from the source, reduces the risk of equipment failure and maintenance costs, and ensures the smooth operation of the reuse system.

[0076] According to one embodiment of the present invention, a lateral drain port 126 is provided on the main body side wall of the base 114, and a check valve 130 is provided at the lateral drain port 126.

[0077] In one embodiment of the present invention, a lateral drain outlet 126 is formed on the side wall of the main body of the base 114, close to the bottom of the base 114, to facilitate the drainage of residual water inside the base 114. The number of drain outlets 126 is reasonably set according to the size of the base 114 and the drainage requirements to ensure that residual water can be drained quickly and thoroughly.

[0078] The check valve 130 is fixedly installed at the side drain outlet 126 and is sealed to the drain outlet 126. Its opening direction faces outward of the base 114, allowing only the water inside the base 114 to drain outward, preventing external water or impurities from entering the base 114. The check valve 130 is made of corrosion-resistant and high-sealing material, which can adapt to the open ditch water environment and ensures no leakage when the valve is closed.

[0079] The check valve 130 is designed to be easy to operate and maintain. It can quickly respond to pressure changes inside the base 114 and automatically open and close without manual intervention.

[0080] When the equipment needs to be removed from the open ditch for maintenance or transport, the side drain 126 can quickly drain the residual water inside the base 114 and filter chamber 106, reducing the weight of the equipment and facilitating transport and maintenance operations; at the same time, thoroughly draining the residual water can prevent the growth of bacteria inside the equipment or the corrosion of components caused by water accumulation, thus extending the service life of the equipment.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A floating integrated device for water filtration and reuse in open ditches of paddy fields, characterized in that, include: The floating suction head (100) includes an annular float assembly (102) for providing buoyancy and a suction assembly (104) suspended at the center of the annular float assembly (102) for absorbing water from the upper layer of the water body; A filter chamber (106) is fixedly installed at the bottom of the open ditch. A spiral blade assembly (108) is arranged inside the filter chamber (106) along the central axis of the filter chamber (106). A filter media reaction layer (110) is arranged in a ring on the radial outer side of the spiral blade assembly (108). A telescopic guide tube (112) connects the water absorption assembly (104) and the filter chamber (106) to guide water from the floating water intake head (100) into the filter chamber (106). The base (114) is connected to the bottom of the filter chamber (106) and is used to fix the filter chamber (106) to the bottom of the open ditch.

2. The floating paddy field open ditch water filtration and reuse integrated device according to claim 1, characterized in that, The water-absorbing component (104) includes: The flow deflector (116) has a downwardly inclined conical structure, and the side wall of the flow deflector (116) is provided with a filter port; The water suction head (118) is located below the flow guide shroud (116) and is connected to the telescopic flow guide pipe (112). A filter screen barrel (120) is installed inside the water suction head (118).

3. The floating paddy field open ditch water filtration and reuse integrated device according to claim 2, characterized in that, The floating water suction head (100) also includes a mesh filter structure disposed between the annular float assembly (102) and the water suction assembly (104) for intercepting floating objects in the water.

4. The floating paddy field open ditch water filtration and reuse integrated device according to claim 1, characterized in that, The spiral blade assembly (108) is a passive rotating structure. The upper end and the lower end of the spiral blade assembly (108) are connected to the outer shell of the filter chamber (106) and can rotate freely around the central axis.

5. The floating paddy field open ditch water filtration and reuse integrated device according to claim 4, characterized in that, The inner wall of the filter media reaction layer (110) is uniformly provided with a plurality of connecting holes or slits (122) in the horizontal direction, so that water flows through the connecting holes or slits (122) to the side wall and comes into contact with the filter media reaction layer (110) under the rotation of the spiral blade assembly (108).

6. The floating paddy field open ditch water filtration and reuse integrated device according to claim 4, characterized in that, The ratio of the outer diameter of the spiral blade to the inner diameter of the filter chamber (106) ranges from 0.8 to 0.9, the ratio of the pitch of the spiral blade to the outer diameter of the spiral blade ranges from 0.5 to 0.8, and the blade tilt angle of the spiral blade ranges from 15 to 25 degrees.

7. The floating paddy field open ditch water filtration and reuse integrated device according to any one of claims 1 to 6, characterized in that, The filter media reaction layer (110) is filled with particulate float filter media for removing chemical oxygen demand and / or modified biochar for removing pesticide residues.

8. The floating paddy field open ditch water filtration and reuse integrated device according to any one of claims 1 to 6, characterized in that, The base (114) is provided with several pointed cone-shaped support legs (124), which are used to insert into the soil at the bottom of the trench.

9. The floating paddy field open ditch water filtration and reuse integrated device according to claim 8, characterized in that, The base (114) comprises a main body consisting of two cylindrical shells, with a connecting pipe (128) for filtering filter media residue between the two cylindrical shells.

10. The floating paddy field open ditch water filtration and reuse integrated device according to claim 9, characterized in that, The base (114) has a side drain port (126) on its main side wall, and a check valve (130) is provided at the side drain port (126).

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