Device for preventing farmland water and soil loss, controlling pesticide pollution and recovering nitrogen and phosphorus

Abstract

The invention discloses a farmland water and soil loss prevention, pesticide pollution control and nitrogen and phosphorus recovery device, and relates to the technical field of water treatment.The farmland water and soil loss prevention, pesticide pollution control and nitrogen and phosphorus recovery device comprises an equipment box, a protective shell is fixedly connected to the side edge of the equipment box, and a vibrating screen mechanism is arranged in the protective shell and comprises a first driving motor arranged in the protective shell; a driving rod is arranged at the output end of the first driving motor, a striking plate is fixedly connected to the side, away from the first driving motor, of the driving rod, an inclined block is arranged on the side edge of the striking plate, a sliding rod is fixedly connected to the side edge of the inclined block, a sliding block is fixedly connected to the side, away from the inclined block, of the sliding rod, and a first filter screen is fixedly connected to the side, close to the equipment box, of the sliding block; during vibration, two-way elastic reset is generated, it is guaranteed that the filter screens vibrate at high frequency, silt cannot be attached, the filtering speed is increased, silt and impurities are effectively prevented from being accumulated on the surface layers of the filter screens, the filtering speed is increased, and the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and in particular to a device for preventing soil erosion in farmland and controlling pesticide pollution and recovering nitrogen and phosphorus. Background Technology

[0002] Excessive application of chemical fertilizers (such as nitrogen and phosphorus inputs in greenhouse vegetable fields exceeding standards by 3-5 times) leads to nutrient enrichment in the soil. During rainfall or irrigation, nitrogen and phosphorus enter water bodies through surface runoff and leaching, causing algal blooms, water hypoxia, and disrupting the aquatic ecological balance. For example, before the ecological ditch renovation in the Yixing rice-growing area of ​​Taihu Lake, nitrogen and phosphorus loss accounted for 90% of the total fertilizer application, directly leading to eutrophication of surrounding rivers. The unreasonable use of pesticides (such as excessive spraying and long residual periods) causes an imbalance in the soil microbial community, with some pesticides entering water bodies through runoff, threatening aquatic life and human health. For instance, traditional irrigation canals, due to their hardened design, have a pesticide interception efficiency of less than 20%, exacerbating river pollution.

[0003] In existing technologies, devices for preventing soil erosion in farmland and controlling pesticide pollution, as well as nitrogen and phosphorus recovery, require the use of filter screens for preliminary filtration of sediment. However, prolonged use can lead to the accumulation of sediment and impurities on the surface of the filter screen, affecting the filtration speed and reducing work efficiency. Therefore, a device for preventing soil erosion in farmland and controlling pesticide pollution, as well as nitrogen and phosphorus recovery, is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies where, in the initial filtration of soil and water loss and pesticide pollution control and nitrogen and phosphorus recovery devices, filter screens are required for preliminary filtration of sediment. However, prolonged use can lead to sediment and impurities accumulating on the surface of the filter screen, affecting the filtration speed and reducing work efficiency. Therefore, this invention proposes a device for preventing soil and water loss and pesticide pollution control and nitrogen and phosphorus recovery.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A device for preventing soil erosion in farmland and controlling pesticide pollution, as well as for nitrogen and phosphorus recovery, includes an equipment box. A protective shell is fixedly connected to the side of the equipment box. A vibrating screen mechanism is installed inside the protective shell. The vibrating screen mechanism includes a first drive motor installed inside the protective shell. A drive rod is installed at the output end of the first drive motor. A striking plate is fixedly connected to the side of the drive rod away from the first drive motor. An inclined block is installed on the side of the striking plate. A sliding rod is fixedly connected to the side of the inclined block. A slider is fixedly connected to the side of the sliding rod away from the inclined block. A first filter screen is fixedly connected to the side of the slider near the equipment box. A filter screen is fixedly connected to the side of the slider near the sliding rod. A spring is used to drive the slide rod to a second filter screen on the side away from the first filter screen. The slide rod is connected to the second filter screen via a set of identical sliders, springs, and the same set of identical sliders. The first drive motor drives the striking plate to rotate via a drive rod. Each rotation of the striking plate strikes and presses down on the inclined block. The inclined block moves the slider and the spring via the slide rod. The movement of the slider causes the spring to extend and generate elastic potential energy. The spring uses this elastic potential energy to drive the first filter screen to vibrate in a moving manner via the slider. The second filter screen vibrates simultaneously with the first filter screen on the same principle. The synchronous vibration of the first and second filters prevents clogging.

[0006] The first filtration section is formed by the components mentioned above and the second filtration section is formed between them. The upper part of the inner part is sloped, which improves the drainage filtration effect.

[0007] The above technical solution further includes: The protective housing is fixedly connected to the first drive motor, the slide rod is slidably connected to the equipment box, the first filter screen is slidably connected to the equipment box, the second filter screen is slidably connected to the equipment box, a square groove is provided on the side of the equipment box near the slider, the slider is slidably connected to the square groove, and the spring is fixedly connected to the square groove.

[0008] The springs are symmetrically arranged in the same set on both sides of the slider, and both sets of sliders and the slider are set inside the square groove. The equipment box on the side of the second filter screen is provided with the same square groove.

[0009] A water inlet pipe is fixedly connected to the lower side of the equipment box near the protective shell.

[0010] A second drive motor is fixedly connected to the side of the equipment box away from the protective shell. The output end of the second drive motor is provided with a threaded rod. A movable plate is threadedly connected to the side of the threaded rod near the equipment box. A telescopic cleaning plate is fixedly connected to the upper side of the movable plate.

[0011] The threaded rod is rotatably connected to the equipment box, the movable plate is slidably connected to the equipment box, the telescopic cleaning plate is slidably connected to the equipment box, a push rod is fixedly connected to the side of the telescopic cleaning plate near the equipment box, and a baffle is rotatably connected to the side of the equipment box away from the telescopic cleaning plate.

[0012] The telescopic cleaning plate is telescopic on the side closest to the first filter screen, so as not to affect the left and right vibration of the first filter screen.

[0013] A soil storage box is fixedly connected to the side of the equipment box near the baffle.

[0014] Biochar is disposed above the side of the equipment box near the first filter screen, and the biochar is disposed between the first filter screen and the second filter screen.

[0015] A solution dispensing tank is fixedly connected to the upper side of the equipment box near the second filter screen. An inlet is provided above the solution dispensing tank, and a discharge pipe is provided below the solution dispensing tank.

[0016] A partition is fixedly connected to the side of the equipment box away from the second filter screen. A hydraulic rod is fixedly connected above the partition. A sliding plate is provided at the output end of the hydraulic rod. The sliding plate is slidably connected to the partition. A box body is provided on the side of the partition.

[0017] The second filter screen and the partition plate together form the third filtration section.

[0018] A drain valve pipe is fixedly connected to the side of the partition closest to the equipment box, and a circular filter screen is provided on the inner wall of the drain valve pipe.

[0019] The present invention has the following beneficial effects: 1. In this invention, through the vibrating screen mechanism, the first drive motor drives the striking plate to rotate, and the striking plate periodically strikes the inclined block, causing the slide rod to drive the slider and spring to move. The spring generates elastic potential energy to drive the first filter screen and the second filter screen to vibrate synchronously. During vibration, bidirectional elastic reset is generated to ensure high-frequency vibration of the filter screen, so that mud and sand cannot adhere, the filtration speed is increased, and mud and sand and impurities are effectively prevented from accumulating on the surface of the filter screen, thus accelerating the filtration speed and improving work efficiency.

[0020] 2. In this invention, the second drive motor drives the threaded rod to rotate, causing the moving plate to slide the telescopic cleaning plate. The telescopic cleaning plate pushes away the mud and impurities remaining in the first filter section. The push rod pushes open the baffle, pushing the mud and impurities into the soil storage box to prevent soil loss.

[0021] 3. In this invention, the second filtration section is equipped with biochar, which uses its high specific surface area to adsorb pesticide molecules with an adsorption efficiency of 80%-90%; magnesium chloride and alkaline solution are added to the solution addition tank to adjust the pH value and promote the combination of phosphate ions in the sewage with magnesium ions and ammonium ions to form magnesium ammonium phosphate struvite crystals, thereby achieving efficient recovery of nitrogen and phosphorus. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a device for preventing soil erosion in farmland, controlling pesticide pollution, and recovering nitrogen and phosphorus, as proposed in this invention. Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the first three-dimensional structure in this invention; Figure 4 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point B; Figure 6 for Figure 2 Enlarged schematic diagram of the structure at point C; Figure 7 for Figure 3 Enlarged schematic diagram of the structure at point D.

[0023] In the diagram: 1. Equipment box; 2. Protective shell; 3. First drive motor; 4. Drive rod; 5. Impact plate; 6. Inclined block; 7. Slide rod; 8. Slider; 9. Spring; 10. First filter screen; 11. Second filter screen; 12. Water inlet pipe; 13. Square channel; 14. Second drive motor; 15. Threaded rod; 16. Moving plate; 17. Telescopic cleaning plate; 18. Push rod; 19. Baffle; 20. Soil storage box; 21. Biochar; 22. Solution dispensing box; 23. Feed inlet; 24. Discharge pipe; 25. Baffle; 26. Hydraulic rod; 27. Slide plate; 28. Drain valve pipe; 29. ​​Circular filter screen; 30. Box body. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1-7As shown, this invention is a device for preventing soil erosion in farmland and controlling pesticide pollution, as well as for nitrogen and phosphorus recovery. It includes an equipment box 1, with a protective shell 2 fixedly connected to the side of the equipment box 1. A vibrating screen mechanism is installed inside the protective shell 2. The vibrating screen mechanism includes a first drive motor 3 installed inside the protective shell 2. A drive rod 4 is installed at the output end of the first drive motor 3. A striking plate 5 is fixedly connected to the side of the drive rod 4 away from the first drive motor 3. An inclined block 6 is installed on the side of the striking plate 5. A sliding rod 7 is fixedly connected to the side of the inclined block 6. A slider 8 is fixedly connected to the side of the sliding rod 7 away from the inclined block 6. A first filter screen 10 is fixedly connected to the side of the slider 8 near the equipment box 1. A spring 9 is fixedly connected to the side of the slider 8 near the sliding rod 7. The slide bar 7 is connected to the second filter 11 on the side away from the first filter 10. The slide bar 7 is connected to the second filter 11 by a set of identical sliders 8 and springs 9. The first drive motor 3 drives the striking plate 5 to rotate through the drive rod 4. The striking plate 5 will strike the inclined block 6 once for every one rotation. The inclined block 6 drives the sliders 8 and springs 9 to move through the slide bar 7. The movement of the sliders 8 will cause the springs 9 to extend and generate elastic potential energy. The springs 9 use the elastic potential energy to drive the first filter 10 to move and vibrate through the sliders 8. The second filter 11 vibrates at the same time as the first filter 10 in the same way. The first filter 10 and the second filter 11 vibrate synchronously to prevent clogging.

[0026] The protective housing 2 is fixedly connected to the first drive motor 3, the slide rod 7 is slidably connected to the equipment box 1, the first filter screen 10 is slidably connected to the equipment box 1, the second filter screen 11 is slidably connected to the equipment box 1, a square groove 13 is provided on the side of the equipment box 1 near the slider 8, the slider 8 is slidably connected to the square groove 13, and the spring 9 is fixedly connected to the square groove 13.

[0027] In this embodiment, the vibrating screen mechanism installed inside the protective housing 2, which is fixedly connected to the side of the equipment box 1, is activated. The first drive motor 3, which is fixedly installed on the side of the protective housing 2, starts to run. When the first drive motor 3 runs, it controls the drive rod 4, which is located at its output end, to rotate. When the drive rod 4 rotates, it drives the striking plate 5 at the other end to rotate. An inclined block 6 is provided on the side of the striking plate 5. There is no connection between the striking plate 5 and the inclined block 6. When the striking plate 5 rotates once, it will strike and press down the inclined block 6 once, causing the inclined block 6 to drive the sliding rod 7 to slide inside the equipment box 1. A slider 8 is fixedly connected to the side of the sliding rod 7 away from the inclined block 6. The slider 8 is slidably connected to the square groove 13 opened inside the equipment box 1. The sliding rod 7 will drive the slider 8 to slide inside the square groove 13. Since a set of springs 9 are fixedly connected to both sides of the slider 8, and the springs 9 The other side is fixedly connected to the square groove 13. When the slider 8 moves, it will drive the two sets of springs 9 to compress and extend, thereby generating elastic potential energy. The two sets of springs 9 will drive the slider 8 to vibrate when it moves. The slider 8 will drive the first filter screen 10 fixedly connected to its side to vibrate. A second filter screen 11 is provided on the side of the slide rod 7 away from the slider 8. The second filter screen 11 is connected to the slide rod 7 by the same set of slider 8, springs 9, square groove 13 and slide rod 7. The second filter screen 11 is driven by the slide rod 7 to vibrate synchronously left and right, thereby effectively preventing the accumulation of mud or other impurities on the surface of the first filter screen 10 and the second filter screen 11. This ensures that agricultural water will not be blocked or slow when passing through the first and second filtration parts, thus speeding up the filtration speed and improving work efficiency.

[0028] In one embodiment, for the aforementioned equipment box 1, a water inlet pipe 12 is fixedly connected to the lower side of the equipment box 1 near the protective housing 2.

[0029] In this embodiment, the water inlet pipe 12 fixedly connected to the side of the equipment box 1 is used for the discharge of agricultural water.

[0030] In one embodiment, for the device box 1, a second drive motor 14 is fixedly connected to the side of the device box 1 away from the protective shell 2. The output end of the second drive motor 14 is provided with a threaded rod 15. A movable plate 16 is threadedly connected to the side of the threaded rod 15 near the device box 1. A telescopic cleaning plate 17 is fixedly connected to the upper side of the movable plate 16.

[0031] The threaded rod 15 is rotatably connected to the equipment box 1, the movable plate 16 is slidably connected to the equipment box 1, and the telescopic cleaning plate 17 is slidably connected to the equipment box 1. A push rod 18 is fixedly connected to the side of the telescopic cleaning plate 17 near the equipment box 1, and a baffle 19 is rotatably connected to the side of the equipment box 1 away from the telescopic cleaning plate 17. The side of the telescopic cleaning plate 17 near the first filter screen 10 is telescopic, so it does not affect the left-right vibration of the first filter screen 10.

[0032] A soil storage box 20 is fixedly connected to the side of the equipment box 1 near the baffle 19.

[0033] In this embodiment, the second drive motor 14, which is fixedly connected to the side of the equipment box 1, is started. When the second drive motor 14 is running, it controls the threaded rod 15, which is set at its output end, to rotate through the inside of the equipment box 1. The threaded rod 15 rotates inside the moving plate 16. Since the moving plate 16 is slidably connected to the equipment box 1 and the moving plate 16 is threadedly connected to the threaded rod 15, the moving plate 16 is driven to slide. When the moving plate 16 slides, it drives the telescopic cleaning plate 17 to slide on the inner wall of the equipment box 1. The telescopic cleaning plate 17 pushes the mud and impurities remaining inside the first filter part. When the telescopic cleaning plate 17 moves, it drives the push rod 18, which is fixedly connected to the side, to move. The push rod 18 moves to the position of the baffle 19 and pushes the baffle 19 to rotate, thereby opening the baffle 19. At this time, the mud and impurities can be pushed into the soil storage box 20 for storage to prevent soil loss.

[0034] In one embodiment, for the device box 1 described above, a biochar 21 is disposed above the side of the device box 1 near the first filter screen 10, and the biochar 21 is disposed between the first filter screen 10 and the second filter screen 11.

[0035] In this embodiment, the bio-carbon 21 in the second filtration section uses its high specific surface area to adsorb pesticide molecules, with an adsorption efficiency of 80%-90%.

[0036] In one embodiment, for the above-mentioned equipment box 1, a solution dispensing box 22 is fixedly connected above the side of the equipment box 1 near the second filter screen 11, an inlet 23 is provided above the solution dispensing box 22, and a discharge pipe 24 is provided below the solution dispensing box 22.

[0037] In this embodiment, magnesium chloride and alkaline solution are stored inside the solution dispensing tank 22. The solution is fed through the inlet 23 located above the solution dispensing tank 22, and then fed into the third filtration section through the end drive rod 4 located below the solution dispensing tank 22. The pH value is adjusted to the slide bar 7, the striking plate 5, and the spring 9, which causes phosphate ions in the wastewater to combine with magnesium ions and ammonium ions to form magnesium ammonium phosphate struvite crystals, thereby achieving efficient recovery of nitrogen and phosphorus.

[0038] In one embodiment, for the device box 1, a partition 25 is fixedly connected to the side of the device box 1 away from the second filter screen 11, a hydraulic rod 26 is fixedly connected above the partition 25, a slide plate 27 is provided at the output end of the hydraulic rod 26, the slide plate 27 is slidably connected to the partition 25, and a box body 30 is provided on the side of the partition 25.

[0039] A drain valve pipe 28 is fixedly connected to the side of the partition 25 near the equipment box 1, and a circular filter screen 29 is provided on the inner wall of the drain valve pipe 28.

[0040] In this embodiment, the equipment box 1 is isolated from the third filtration section by the partition 25. The hydraulic rod 26 fixedly connected above the partition 25 can control the slide plate 27 to move up and down. Drain valve pipes 28 are fixedly connected to both sides of the partition 25. The circular filter screen 29 fixedly connected inside the drain valve pipe 28 discharges the water source after three-step filtration. The circular filter screen 29 places crystals into the drain valve pipe 28. The crystals enter the box 30 fixedly connected to the side of the partition 25 through the slide plate 27 for storage, which is convenient for later recycling.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing soil erosion and pesticide pollution control and nitrogen and phosphorus recovery in farmland, comprising a device box (1), characterized in that, The equipment box (1) side fixedly connected with the protective shell (2), the protective shell (2) inside is provided with the sieve mechanism, the sieve mechanism includes the first drive motor (3) arranged in the protective shell (2), the output of the first drive motor (3) is provided with the drive rod (4), the drive rod (4) is fixedly connected with the knock plate (5) away from the first drive motor (3) side, the knock plate (5) side is provided with the inclined block (6), the inclined block (6) side is fixedly connected with the sliding rod (7), the sliding rod (7) is fixedly connected with the sliding block (8) away from the inclined block (6) side, the sliding block (8) is fixedly connected with the first filter screen (10) close to the equipment box (1) side, the sliding block (8) is fixedly connected with the spring (9) close to the sliding rod (7) side, the sliding rod (7) is drivingly connected with the second filter screen (11) away from the first filter screen (10) side, the sliding rod (7) is connected with the same group of sliding block (8) and spring (9) and second filter screen (11) to form a driving connection relationship, the first drive motor (3) drives the knock plate (5) to rotate through the drive rod (4), the knock plate (5) rotates a week and will knock down the inclined block (6) once, the inclined block (6) drives the sliding block (8) and spring (9) to move through the sliding rod (7), the sliding block (8) moves and makes the spring (9) elongate to generate elastic potential energy, the spring (9) drives the first filter screen (10) to move and vibrate by the sliding block (8) using the elastic potential energy, the second filter screen (11) vibrates simultaneously with the first filter screen (10) by the same principle, the first filter screen (10) and the second filter screen (11) vibrate synchronously to prevent blockage.

2. The device for preventing soil erosion and pesticide pollution and recovering nitrogen and phosphorus according to claim 1, characterized in that, The protective shell (2) is fixedly connected with the first drive motor (3), the sliding rod (7) is slidingly connected with the equipment box (1), the first filter screen (10) is slidingly connected with the equipment box (1), the second filter screen (11) is slidingly connected with the equipment box (1), the equipment box (1) is provided with a square groove (13) close to the sliding block (8) side, the sliding block (8) is slidingly connected with the square groove (13), and the spring (9) is fixedly connected with the square groove (13). Wherein, the spring (9) is symmetrically provided with the same group on both sides of the sliding block (8), and the two groups of sliding rods (7) and sliding blocks (8) are arranged in the square groove (13), and the equipment box (1) on the side of the second filter screen (11) is provided with the same square groove (13).

3. The device for preventing soil erosion and pesticide pollution and recovering nitrogen and phosphorus according to claim 1, characterized in that, The equipment box (1) is fixedly connected with the water inlet pipe (12) below the side close to the protective shell (2).

4. The device for preventing soil erosion and chemical pollution and recovering nitrogen and phosphorus according to claim 1, characterized in that, The equipment box (1) is fixedly connected with the second drive motor (14) away from the protective shell (2) side, the output of the second drive motor (14) is provided with the threaded rod (15), the threaded rod (15) is threadedly connected with the moving plate (16) close to the equipment box (1) side, and the moving plate (16) is fixedly connected with the telescopic cleaning plate (17) above the side.

5. The device for preventing water and soil loss and controlling pollution of pesticides and recovering nitrogen and phosphorus in farmlands according to claim 4, characterized in that, The threaded rod (15) is rotatably connected with the equipment box (1), the moving plate (16) is slidably connected with the equipment box (1), the telescopic cleaning plate (17) is slidably connected with the equipment box (1), the telescopic cleaning plate (17) is fixedly connected with the push rod (18) on the side close to the equipment box (1), and the equipment box (1) is rotatably connected with the baffle (19) on the side away from the telescopic cleaning plate (17). Wherein, the side of the telescopic cleaning plate (17) close to the first filter screen (10) is telescopic, which does not affect the left and right vibration of the first filter screen (10).

6. The device for preventing water and soil loss and controlling pollution of pesticides and recovering nitrogen and phosphorus in farmlands according to claim 5, characterized in that, The equipment box (1) is fixedly connected with the soil storage box (20) on the side close to the baffle (19).

7. The device for preventing soil erosion and chemical pollution and recovering nitrogen and phosphorus according to claim 1, characterized in that, The equipment box (1) is provided with the biochar (21) on the side close to the first filter screen (10) and above, and the biochar (21) is arranged between the first filter screen (10) and the second filter screen (11).

8. The device for preventing soil erosion and chemical pollution and recovering nitrogen and phosphorus according to claim 1, characterized in that, The equipment box (1) is fixedly connected with the solution feeding box (22) on the side close to the second filter screen (11) and above, the solution feeding box (22) is provided with the feeding port (23) above, and the solution feeding box (22) is provided with the discharging pipe (24) below.

9. The device for preventing soil erosion and chemical pollution and recovering nitrogen and phosphorus according to claim 1, characterized in that, The equipment box (1) is fixedly connected with the partition plate (25) on the side away from the second filter screen (11), the partition plate (25) is fixedly connected with the hydraulic rod (26) above, the output end of the hydraulic rod (26) is provided with the sliding plate (27), the sliding plate (27) is slidably connected with the partition plate (25), and the partition plate (25) is provided with the box body (30) on the side edge. Wherein, the second filter screen (11) and the partition plate (25) constitute a third filtering part.

10. The device for preventing soil erosion and chemical pollution and recovering nitrogen and phosphorus according to claim 9, characterized in that, The partition plate (25) is fixedly connected with the drain valve pipe (28) on the side close to the equipment box (1), and the drain valve pipe (28) is provided with the circular filter screen (29) on the inner wall.

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