An ecological wetland purification combined dam for farmland drainage

Abstract

The utility model discloses a farmland drainage ecological wetland purification combined dam belongs to the technical field of polluted water treatment, this farmland drainage ecological wetland purification combined dam, including filter dam, the filter dam inside is provided with the separation mechanism of separating farmland drainage sundries, the filter dam inside fixedly connected with the flow guide pipe, the inside of filter dam is provided with the waste material discharge mechanism of discharging sundries in farmland drainage in another side position, one side of filter dam is rotatably connected with the guard door. The utility model discloses through design separation mechanism, utilize water current impact drive waterwheel roller, make filter board produce vibration through mechanical drive, intercept silt, impurity at the same time, effectively prevent filter hole from being blocked, ensure long -term stable filtration efficiency, reduce manual maintenance cost, and vibration mechanism realizes the self -cleaning of filter board, need not additional energy input, meet the energy -conserving concept of ecological wetland purification system.

Description

Technical Field

[0001] This utility model relates to the field of polluted water treatment technology, and in particular to a combined dam for ecological wetland purification of farmland drainage. Background Technology

[0002] With the continuous acceleration of agricultural modernization, the application of chemical fertilizers and pesticides has been rising in pursuit of higher crop yields. Data shows that in some parts of my country, the amount of chemical fertilizers applied per unit area far exceeds the internationally recognized safe limit, and there are also cases of excessive and unreasonable use of pesticides. Under the influence of irrigation and rainfall, chemical fertilizers, pesticides, and soil sediments that are not absorbed and utilized by crops are discharged into farmland drainage through surface runoff and groundwater seepage. The content of pollutants such as nitrogen and phosphorus in these drainages increases significantly. According to relevant monitoring data, the concentration of total nitrogen and total phosphorus in farmland drainage often exceeds the surface water standard by several times or even dozens of times.

[0003] Natural ditch drainage relies solely on the natural flow of water to transport farmland wastewater to receiving water bodies. It lacks effective interception and filtration structures and cannot remove pollutants such as nitrogen, phosphorus, and pesticides from the water. This results in a large amount of pollutants directly entering rivers and lakes, exacerbating water pollution. While simple sedimentation treatment can allow some large particles such as silt to settle by letting them stand, it lacks an active solid-liquid separation mechanism. It is difficult to remove fine suspended solids, dissolved pollutants, and pesticide residues adsorbed on the surface of silt. Furthermore, the impurities after sedimentation need to be cleaned manually and regularly, which is inefficient and costly.

[0004] Therefore, there is an urgent need to provide a combined dam for farmland drainage, ecological wetland purification, and other solutions to the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a combined dam for farmland drainage, ecological wetland purification.

[0006] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: a combined dam for ecological wetland purification of farmland drainage is provided, including a filter dam, wherein multiple water inlet pipes are fixedly connected to one side of the filter dam near the top, and a separation mechanism for separating farmland drainage debris is provided inside the filter dam.

[0007] A flow guide pipe is fixedly connected inside the filter dam. A purification box is installed at the bottom of one side of the filter dam. Multiple pull-out drawers are slidably connected to one side of the purification box. A drain pipe is fixedly connected inside the purification box.

[0008] Inside the filter dam, on the other side, there is a waste discharge mechanism for discharging debris from farmland drainage. A protective door is rotatably connected to one side of the filter dam.

[0009] The present invention is further configured as follows: the separation mechanism includes two mounting rings installed on the inner wall of the filter dam, each mounting ring having a movable groove on its outer wall, a fixing plate fixedly connected to the other end of each mounting ring, bearings installed inside each fixing plate, two limiting grooves opened at the inner end of each fixing plate, a filter plate installed between the two fixing plates, two baffles fixedly connected to the top of the filter plate, a connecting rod rotatably connected to the outer end of each fixing plate, two gear rings rotatably connected to the inner wall of the filter dam, a waterwheel roller installed between the two gear rings, two connecting gears corresponding to the gear rings rotatably connected to the inner wall of the filter dam, a circular plate fixedly connected to the inner end of each of the two connecting gears, and an eccentric block fixedly connected to the inner end of each of the two circular plates.

[0010] Through the above technical solution, when farmland drainage flows into the filter dam, the water flow impacts the waterwheel roller, causing it to rotate. The gear rings at both ends of the waterwheel roller rotate synchronously and mesh with the connecting gears on the inner wall of the filter dam, transmitting power to the circular plate and eccentric block, and then to the fixed plate through the connecting rod. This forces the filter plate to oscillate back and forth under the support of the bearing. During the vibration, the filter plate intercepts and filters the mud, sand, and impurities in the water flow. At the same time, the vibration effectively prevents particulate matter from accumulating on the surface of the filter holes, avoiding blockage and maintaining filtration efficiency. The baffle restricts the water flow path, ensuring that it fully passes through the filtration area. The mounting ring is connected to the inner wall of the filter dam through the movable groove, allowing displacement within a certain range. Combined with the rotational support of the bearing, the entire mechanism maintains structural stability during vibration. The limiting groove cooperates with the limiting blocks at both ends of the filter plate to further constrain the movement trajectory of the filter plate and prevent deviation.

[0011] The present invention is further configured such that: both ends of the filter plate are fixedly connected with connecting blocks corresponding to the inner ring of the bearing.

[0012] With the above technical solution, the inner ring of the bearing is connected to the filter plate through the connecting block, while the outer ring is fixed on the fixed plate. This structure provides a stable and reliable rotational support for the filter plate. Driven by the waterwheel roller, the connecting gear, the circular plate and the eccentric block will generate eccentric motion, which will be transmitted to the filter plate through the connecting rod.

[0013] The present invention is further configured such that: both ends of the filter plate are fixedly connected with limiting blocks adapted to the limiting groove.

[0014] Through the above technical solution, when the separation mechanism is running, the limiting block is embedded in the limiting groove to precisely limit the displacement of the filter plate, preventing it from shifting laterally or longitudinally under the action of water flow impact, eccentric block vibration, etc., ensuring that the filter plate is always in a stable working position and ensuring the reliable operation of filtration and vibration impurity removal functions.

[0015] The present invention is further configured such that the connecting rod is installed between the fixed plate and the corresponding eccentric block.

[0016] With the above technical solution, the connecting rod is installed between the fixed plate and the eccentric block, which can convert the circular motion of the eccentric block into the reciprocating vibration of the filter plate, ensuring the stable operation of the entire system.

[0017] The present invention is further configured such that: multiple pull-out drawers are sequentially loaded with zeolite, nitrifying bacteria ceramic particles and gravel along the water flow direction.

[0018] Through the above technical solution, the water first flows through zeolite, whose abundant pores can adsorb suspended impurities, some organic pollutants, and ammonia nitrogen in farmland drainage, thus initially purifying the water quality. Then, it flows into ceramic particles with attached nitrifying bacteria. The ceramic particles provide a habitat for nitrifying bacteria, and through microbial metabolism, ammonia nitrogen in the water is converted into nitrite and nitrate, completing the nitrification reaction and deeply degrading nitrogen pollutants. Subsequently, it flows through crushed stone, which can further filter and intercept fine particles that have not been completely adsorbed and decomposed. At the same time, it plays a buffering and guiding role in the water flow, making the purification process smoother.

[0019] The present invention is further configured such that: the waste discharge mechanism includes a waste box installed inside the filter dam, a waste hopper is fixedly connected inside the waste box, a discharge pipe is fixedly connected inside the waste box near the waste hopper, a drive motor is installed at one end of the discharge pipe, and an auger shaft is installed at the output end of the drive motor.

[0020] Through the above technical solution, during the operation of the filter dam, the silt, impurities, and other waste materials intercepted by the separation mechanism fall into the waste hopper inside the waste bin under the action of water flow and gravity. The unique funnel shape design of the waste hopper allows the waste materials to naturally converge and concentrate towards the discharge pipe. When it is necessary to discharge the waste materials, the drive motor starts, driving the auger shaft to rotate at high speed. During the rotation, the spiral blades on the auger shaft continuously push the waste materials at the bottom of the waste hopper along the discharge pipe towards the outlet. Through the continuous pushing action of the spiral blades, the waste materials are forcibly discharged from the discharge pipe, achieving efficient waste material cleaning and preventing excessive accumulation of waste materials in the filter dam, which would affect the normal operation and purification effect of the filter dam.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. This utility model, through the design of a separation mechanism, utilizes the impact of water flow to drive the waterwheel roller, and through mechanical transmission, causes the filter plate to vibrate. While intercepting mud and impurities, it effectively prevents the filter holes from clogging, ensuring long-term stable filtration efficiency, reducing manual maintenance costs, and the vibration mechanism enables the filter plate to self-clean without the need for additional energy input, which is in line with the energy-saving concept of ecological wetland purification systems.

[0023] 2. This utility model designs a waste discharge mechanism that utilizes the funnel shape of the waste hopper. With the help of water flow and gravity, the waste naturally converges at the discharge pipe, achieving automatic collection and concentration of waste. The combination of the drive motor and the auger shaft, through the pushing principle of the spiral blades, forcibly discharges the waste. The powerful and stable conveying ensures efficient and thorough waste cleaning, preventing it from accumulating and clogging in the filter dam. This guarantees the long-term stable operation and purification effect of the filter dam. Compared with manual cleaning, this mechanical waste discharge method significantly reduces labor costs and maintenance frequency, and improves work efficiency. Attached Figure Description

[0024] Figure 1 This is a perspective view of the present utility model;

[0025] Figure 2 This is a side view of the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the filter dam of this utility model;

[0027] Figure 4 This is a schematic diagram of the separation mechanism of this utility model;

[0028] Figure 5 This is a schematic diagram of the fixing plate structure of this utility model.

[0029] In the diagram: 1. Filter dam; 2. Inlet pipe; 3. Separation mechanism; 301. Mounting ring; 302. Movable groove; 303. Fixed plate; 304. Bearing; 305. Limiting groove; 306. Filter plate; 307. Baffle; 308. Connecting rod; 309. Gear ring; 310. Water roller; 311. Connecting gear; 312. Circular plate; 313. Eccentric block; 4. Guide pipe; 5. Purification box; 6. Pull-out drawer; 7. Drain pipe; 8. Waste discharge mechanism; 801. Waste bin; 802. Waste hopper; 803. Discharge pipe; 804. Drive motor; 805. Screw shaft; 9. Protective door. Detailed Implementation

[0030] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0031] Please see Figures 1-5A combined ecological wetland purification dam for farmland drainage includes a filter dam 1. Multiple inlet pipes 2 are fixedly connected to one side of the filter dam 1 near its top. The filter dam 1 contains a separation mechanism 3 for separating farmland drainage debris. The separation mechanism 3 includes two mounting rings 301 installed on the inner wall of the filter dam 1. Each mounting ring 301 has a movable groove 302 on its outer wall. A fixing plate 303 is fixedly connected to the other end of each mounting ring 301. Bearings 304 are installed inside each fixing plate 303. Two limiting grooves 305 are formed at the inner ends of each fixing plate 303. A filter plate 306 is installed between the two fixing plates 303. Connecting blocks corresponding to the inner rings of the bearings 304 are fixedly connected to both ends of the filter plate 306. The inner ring of the bearing 304 is connected to the filter plate 306 via the connecting blocks, while the outer ring is fixed. On the fixed plate 303, this structure provides a stable and reliable rotational support for the filter plate 306. Driven by the water roller 310, the connecting gear 311, the circular plate 312, and the eccentric block 313 will generate eccentric motion, which will be transmitted to the filter plate 306 through the connecting rod 308. The two ends of the filter plate 306 are fixedly connected with limiting blocks that are compatible with the limiting groove 305. When the separation mechanism 3 is running, the limiting blocks are embedded in the limiting groove 305 to precisely limit the displacement of the filter plate 306 and prevent it from shifting laterally or longitudinally under the action of water flow impact and vibration of the eccentric block 313, ensuring that the filter plate 306 is always in a stable working position and ensuring the reliable operation of the filtration and vibration impurity removal functions. The top of the filter plate 306 is fixedly connected with two baffles 307, and the outer ends of the two fixed plates 303 are rotatably connected with connecting rods 308.

[0032] like Figure 4 and Figure 5 As shown, two gear rings 309 are rotatably connected to the inner wall of the filter dam 1, and a waterwheel roller 310 is installed between the two gear rings 309. Two connecting gears 311 corresponding to the gear rings 309 are rotatably connected to the inner wall of the filter dam 1. A circular plate 312 is fixedly connected to the inner end of each of the two connecting gears 311, and an eccentric block 313 is fixedly connected to the inner end of each of the two circular plates 312. A connecting rod 308 is installed between the fixed plate 303 and the corresponding eccentric block 313. The connecting rod 308 can convert the circumferential motion of the eccentric block 313 into the reciprocating vibration of the filter plate 306, ensuring the stable operation of the entire system.

[0033] like Figure 4 and Figure 5As shown, when farmland drainage flows into the filter dam 1, the water flow impacts the waterwheel roller 310, causing it to rotate. The gear rings 309 at both ends of the waterwheel roller 310 rotate synchronously and mesh with the connecting gear 311 on the inner wall of the filter dam 1, transmitting power to the circular plate 312 and the eccentric block 313, and then to the fixed plate 303 through the connecting rod 308. This forces the filter plate 306 to oscillate back and forth under the support of the bearing 304. During the vibration, the filter plate 306 intercepts and filters the mud, sand, and impurities in the water flow. At the same time, the vibration effectively prevents particulate matter from accumulating on the surface of the filter holes, avoiding blockage and maintaining filtration efficiency. The baffle 307 restricts the water flow path, ensuring that it fully passes through the filtration area. The mounting ring 301 is connected to the inner wall of the filter dam 1 through the movable groove 302, allowing displacement within a certain range. Combined with the rotational support of the bearing 304, the entire mechanism maintains structural stability during vibration. The limiting groove 305 cooperates with the limiting blocks at both ends of the filter plate 306 to further constrain the movement trajectory of the filter plate 306 and prevent deviation.

[0034] like Figures 1-3 As shown, a guide pipe 4 is fixedly connected inside the filter dam 1. A purification box 5 is installed at the bottom of one side inside the filter dam 1. Multiple pull-out drawers 6 are slidably connected to one side of the purification box 5. The multiple pull-out drawers 6 are loaded with zeolite, nitrifying bacteria ceramic particles and gravel in sequence along the water flow direction. The water flows through the zeolite first. Its rich pores can adsorb suspended impurities, some organic pollutants and ammonia nitrogen in farmland drainage, thus initially purifying the water quality. Then it flows into the nitrifying bacteria ceramic particles. The ceramic particles provide a habitat for nitrifying bacteria. With the help of microbial metabolism, ammonia nitrogen in the water is converted into nitrite and nitrate, completing the nitrification reaction and deeply degrading nitrogen pollutants. Subsequently, it flows through the gravel. The gravel can further filter and intercept fine particles that have not been completely adsorbed and decomposed. At the same time, it plays a buffering and guiding role in the water flow, making the purification process smoother. A drain pipe 7 is fixedly connected inside the purification box 5.

[0035] like Figure 3As shown, a waste discharge mechanism 8 for discharging debris from farmland drainage is installed on one side of the interior of the filter dam 1. The waste discharge mechanism 8 includes a waste bin 801 installed inside the filter dam 1. A waste hopper 802 is fixedly connected inside the waste bin 801. A discharge pipe 803 is fixedly connected inside the waste bin 801 near the waste hopper 802. A drive motor 804 is installed at one end of the discharge pipe 803, and an auger shaft 805 is installed at the output end of the drive motor 804. During the operation of the filter dam 1, the mud, sand, impurities, and other waste intercepted by the separation mechanism 3 fall into the waste bin 801 under the action of water flow and gravity. In hopper 802, the unique funnel shape design of the waste hopper 802 allows the waste to naturally converge and concentrate towards the discharge pipe 803. When the waste needs to be discharged, the drive motor 804 starts, driving the auger shaft 805 to rotate at high speed. During the rotation, the spiral blades on the auger shaft 805 continuously push the waste at the bottom of the waste hopper 802 along the discharge pipe 803 towards the outlet. Through the continuous pushing action of the spiral blades, the waste is forced out of the discharge pipe 803, achieving efficient cleaning of the waste and preventing excessive accumulation of waste in the filter dam 1, which would affect the normal operation and purification effect of the filter dam 1. A protective door 9 is rotatably connected to one side of the filter dam 1.

[0036] In use, farmland drainage flows into the filter dam 1 through the inlet pipe 2, first impacting the waterwheel roller 310 to rotate it. The waterwheel roller 310 drives the gear ring 309 to rotate, and the gear ring 309 meshes with the connecting gear 311, transmitting power to the circular plate 312 and the eccentric block 313. The eccentric movement of the eccentric block 313 is transmitted to the fixed plate 303 through the connecting rod 308, forcing the filter plate 306 to swing back and forth under the support of the bearing 304, intercepting and filtering mud, sand, and impurities in the water flow. At the same time, the vibration prevents the filter holes from clogging. The baffle 307 restricts the water flow path, and the mounting ring 301, limiting groove 305, etc., ensure the stable operation of the structure. The filtered water flows through the guide... Pipe 4 enters the purification tank 5, and passes sequentially through the pull-out drawer 6 containing zeolite, nitrifying bacteria ceramic particles, and gravel for physical adsorption, biodegradation, and secondary filtration, achieving deep purification of organic pollutants, nitrogen, etc. The silt and other waste intercepted by the separation mechanism 3 falls into the waste hopper 802 of the waste bin 801 under gravity. When cleaning is required, the drive motor 804 drives the auger shaft 805 to rotate, forcibly discharging the waste from the discharge pipe 803. The purified water is discharged through the drain pipe 7. The protective door 9 facilitates maintenance and repair of the internal equipment. The entire device achieves efficient purification of farmland drainage through the synergistic effect of mechanical filtration, biological purification, and waste discharge.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A combined dam for farmland drainage ecological wetland purification, comprising a filter dam (1), characterized in that: Multiple water inlet pipes (2) are fixedly connected to one side of the filter dam (1) near the top. The filter dam (1) is equipped with a separation mechanism (3) for separating farmland drainage debris. The filter dam (1) is fixedly connected to a flow guide pipe (4), and a purification box (5) is installed at the bottom of one side of the filter dam (1). Multiple pull-out drawers (6) are slidably connected to one side of the purification box (5), and a drain pipe (7) is fixedly connected to the inside of the purification box (5). The filter dam (1) is equipped with a waste discharge mechanism (8) for discharging debris from farmland drainage on the other side of the interior. A protective door (9) is rotatably connected to one side of the filter dam (1).

2. The combined dam for farmland drainage ecological wetland purification according to claim 1, characterized in that: The separation mechanism (3) includes two mounting rings (301) installed on the inner wall of the filter dam (1). Each mounting ring (301) has a movable groove (302) on its outer wall. A fixing plate (303) is fixedly connected to the other end of each mounting ring (301). Bearings (304) are installed inside each fixing plate (303). Two limiting grooves (305) are opened at the inner ends of each fixing plate (303). A filter plate (306) is installed between the two fixing plates (303). The top of the filter plate (306) is fixedly connected to… There are two baffles (307), and the outer ends of the two fixed plates (303) are rotatably connected to connecting rods (308). The inner wall of the filter dam (1) is rotatably connected to two gear rings (309), and a waterwheel roller (310) is installed between the two gear rings (309). The inner wall of the filter dam (1) is rotatably connected to two connecting gears (311) corresponding to the gear rings (309). The inner ends of the two connecting gears (311) are fixedly connected to circular plates (312), and the inner ends of the two circular plates (312) are fixedly connected to eccentric blocks (313).

3. The combined dam for farmland drainage ecological wetland purification according to claim 2, characterized in that: Both ends of the filter plate (306) are fixedly connected to connecting blocks corresponding to the inner ring of the bearing (304).

4. The combined dam for farmland drainage, ecological wetland purification, and other purposes according to claim 3, characterized in that: The filter plate (306) has fixedly connected limit blocks at both ends that are compatible with the limit groove (305).

5. The combined dam for farmland drainage ecological wetland purification according to claim 2, characterized in that: The connecting rod (308) is installed between the fixed plate (303) and the corresponding eccentric block (313).

6. The combined dam for farmland drainage ecological wetland purification according to claim 1, characterized in that: Multiple pull-out drawers (6) are sequentially loaded with zeolite, nitrifying bacteria ceramic particles and gravel along the water flow direction.

7. The combined dam for farmland drainage ecological wetland purification according to claim 1, characterized in that: The waste discharge mechanism (8) includes a waste box (801) installed inside the filter dam (1). A waste hopper (802) is fixedly connected inside the waste box (801). A discharge pipe (803) is fixedly connected inside the waste box (801) near the waste hopper (802). A drive motor (804) is installed at one end of the discharge pipe (803). An auger shaft (805) is installed at the output end of the drive motor (804).

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