An on-site farmland soil remediation device
By designing an on-site farmland soil remediation device, which utilizes ultraviolet photocatalysis to decompose pollutants in the soil, the problems of low efficiency and secondary pollution in existing technologies have been solved, achieving efficient and convenient soil remediation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNNAN NORMAL UNIV
- Filing Date
- 2025-03-31
- Publication Date
- 2026-07-24
Smart Images
Figure CN224542665U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of soil remediation technology, and specifically relates to a field remediation device for farmland soil. Background Technology
[0002] With the advancement of industrialization and agricultural modernization, farmland soil pollution has become increasingly prominent, especially organic pollutants and heavy metal pollution, which seriously affect soil ecology and agricultural product safety. Existing soil remediation technologies suffer from problems and shortcomings such as low efficiency, high cost, complex operation, and secondary pollution, making it difficult to meet the needs of efficient on-site farmland soil remediation. Commonly used physical methods in existing soil remediation, such as soil replacement and isolation, involve large-scale engineering projects, often requiring large equipment, resulting in high costs and failing to fundamentally solve the soil pollution problem. Chemical methods, such as chemical leaching and oxidation-reduction, pose a risk of secondary soil pollution, affecting the subsequent normal use of the soil. While bioremediation, such as using plants or microorganisms to decompose pollutants, is environmentally friendly and low-cost, its long remediation cycle can easily disrupt agricultural activities.
[0003] Therefore, it is necessary to design a field soil remediation device that can at least solve some of the above problems and defects. Summary of the Invention
[0004] To solve the above-mentioned technical problems, this utility model proposes a field soil remediation device for farmland. It has a simple structure, is easy to transfer and transport, is suitable for field remediation of farmland soil, and is easy to operate, which improves the efficiency of field soil remediation. It uses ultraviolet light photocatalysis to decompose pollutants in the soil and avoids secondary pollution of the soil.
[0005] The technical solution of this utility model is: This utility model proposes a field remediation device for farmland soil, including a support frame, and a mixing cylinder, a screening disc, and a catalytic cylinder arranged sequentially from top to bottom on the support frame; The mixing cylinder is rotatably mounted directly above the screening disc. The top of the screening disc has a feed inlet located directly below the mixing cylinder, and the bottom has a discharge outlet located directly above the catalytic cylinder. The catalytic cylinder includes an inner cylinder with a top opening and a detachable cover located at the top opening. The bottom of the cover has several spaced ultraviolet lamp beads.
[0006] Preferably, the support frame is provided with a mixing motor fixedly connected thereto, and a metal ring coaxially arranged around the outer periphery of the mixing cylinder is fixedly sleeved thereto; The metal ring is connected to the mixing motor and is rotatably mounted on the support frame.
[0007] Preferably, the support frame is further provided with magnetic locking posts spaced apart on the outside of the metal ring, and the ends of the magnetic locking posts are provided with electromagnets that are arranged toward the metal ring.
[0008] Preferably, the screening disc is provided with an upper screening chamber and a lower feeding chamber separated by a mesh screen, the feed inlet is connected to the upper screening chamber, and the discharge outlet is connected to the lower feeding chamber; The side wall of the screening disc is also provided with a slag discharge port that communicates with the upper screening chamber, and a slag discharge channel that communicates with the slag discharge port.
[0009] Preferably, the bottom of the screening disc is provided with several buffer springs that are fixedly connected to the support frame, and the outer wall of the screening disc is provided with a screening motor that is fixedly connected to it.
[0010] Preferably, the catalyst cylinder further includes a liftable tray disposed in the inner cavity of the inner cylinder, and an outer cylinder sleeved around the outer periphery of the inner cylinder; The pallet has several spaced drainage holes on its side and bottom walls. The pallet is equipped with four detachably connected cables. The outer cylinder is equipped with a liftable handle embedded in its side wall. One end of the cable is detachably connected to the pallet, and the other end goes around the top of the inner cylinder side wall and connects to the handle.
[0011] Preferably, the side wall of the tray is provided with four spaced hanging holes, and the end of the cable is provided with a hook that is fixedly connected thereto, and the hook is detachably inserted into the hanging hole.
[0012] Preferably, the top of the inner cylinder sidewall is provided with four spaced-apart slots, and the cable is slidably embedded in the slots; The outer wall of the inner cylinder is also provided with four spaced cover strips. The cover strips are located directly below the slot and are provided with longitudinal through grooves adapted to the cable. The cable is movably passed through the longitudinal through grooves.
[0013] Preferably, the outer cylinder is provided with a guide groove penetrating its side wall, and the handle is movably inserted into the guide groove; The guide groove includes a connected longitudinal groove and a locking groove. The longitudinal groove is parallel to the central axis of the outer cylinder, and the locking groove is located at the bottom end of the longitudinal groove and is in the shape of a "G".
[0014] Preferably, the handle includes an inner arc strip located between the inner wall of the outer cylinder and the outer wall of the inner cylinder, a connecting rod movably disposed in the guide groove, and an outer arc strip located outside the outer wall of the outer cylinder; The two ends of the connecting rod are fixedly connected to the inner arc strip and the outer arc strip, respectively.
[0015] This utility model has the following advantages and effects compared with the prior art: (1) The mixing cylinder, screening disc and catalytic cylinder are arranged on the support frame from top to bottom. The soil to be remediated can be mixed, screened and filtered and catalytically digested in sequence. The overall structure is compact, simple and convenient to use, and suitable for on-site remediation of farmland soil. (2) Using a number of ultraviolet lamp beads that can emit ultraviolet light, the soil to be remediated placed in the catalytic tube can be irradiated with ultraviolet light to catalyze and decompose organic pollutants in the soil to complete the on-site remediation of farmland soil. The remediation efficiency is high and it will not cause secondary pollution to the soil. (3) A rotatable mixing cylinder mounted on the screening plate is used. The soil of the farmland to be restored can be placed in the mixing cylinder and mixed with water (or photocatalyst). During the continuous rotation, the mixing is uniform and comprehensive, so as to improve the efficiency and effect of subsequent catalytic reaction and pollutant degradation. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the farmland soil on-site remediation device in an embodiment of this utility model; Figure 2 This is another structural schematic diagram of the farmland soil on-site remediation device in this utility model embodiment; Figure 3 This is a schematic diagram of the structure of the cap in the farmland soil on-site remediation device in this embodiment of the present invention; Figure 4 This is a schematic diagram of the outer cylinder in the farmland soil on-site remediation device in this embodiment of the present invention; Figure 5 This is a schematic diagram of the inner cylinder in the farmland soil on-site remediation device in this embodiment of the present invention; Figure 6 This is a schematic diagram of the tray structure in the farmland soil on-site remediation device in this embodiment of the present invention.
[0017] Reference numerals: 1. Support frame; 11. Mixing motor; 2. Mixing cylinder; 21. Cylinder cover; 22. Metal ring; 3. Screening disc; 31. Mesh screen; 32. Feed inlet; 33. Discharge outlet; 34. Slag discharge channel; 35. Buffer spring; 36. Screening motor; 4. Catalytic cylinder; 41. Inner cylinder; 411. Slot; 412. Cover strip; 413. Longitudinal through groove; 42. Sealing cap; 421. UV lamp bead; 43. Tray; 431. Drain hole; 432. Cable; 433. Hanging hole; 434. Hook; 44. Outer cylinder; 441. Handle; 4411. Inner arc strip; 4412. Connecting rod; 4413. Outer arc strip; 442. Guide groove; 4421. Longitudinal groove; 4422. Locking groove; 5. Magnetic lock column; 51. Electromagnet. Detailed Implementation
[0018] To enable those skilled in the art to better understand this utility model, it will now be further described in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of this utility model.
[0019] Example: like Figures 1-6 As shown, this utility model provides a field remediation device for farmland soil, which includes a support frame 1 and a mixing cylinder 2, a screening disc 3, and a catalyst cylinder 4 arranged sequentially from top to bottom on the support frame 1. The mixing cylinder 2 is rotatably mounted directly above the screening disc 3. The mixing cylinder 2 has a cylinder opening communicating with its inner cavity and a detachable cylinder cover 21 at the cylinder opening. The support frame 1 is equipped with a mixing motor 11 fixedly connected to it. The mixing motor 11 is connected to the mixing cylinder 2 to drive the mixing cylinder 2 to rotate, thereby promoting the mixing of the soil to be remediated with water (or liquid-phase photocatalyst). A metal ring 22 is fixedly sleeved on the outer periphery of the mixing cylinder 2 and coaxially arranged therewith. The metal ring 22 is rotatably mounted on the support frame 1 and is fixedly connected to the output shaft of the mixing motor 11. The output shaft of the mixing motor 11 is perpendicular to the central axis of the metal ring 22.
[0020] Further reference Figure 2 As shown, the support frame 1 is also provided with magnetic locking posts 5 spaced apart on the outside of the metal ring 22. At the end of the magnetic locking post 5, an electromagnet 51 is provided facing the metal ring 22. By controlling the on and off of the electromagnet 51, the metal ring 22 and the mixing cylinder 2 are locked and fixed. Since the electromagnet is a mature existing technology, its specific principle and circuit structure will not be described here. It should be noted that the maximum distance between the mixing cylinder 2 and its rotation center axis is not greater than the maximum distance between the metal ring 22 and its rotation center axis. That is, it is ensured that the mixing cylinder 2 will not interfere with the rotation of the electromagnet 51 at the end of the magnetic locking post 5 during the rotation process.
[0021] Combination Figure 1 and Figure 2 As shown, the screening disc 3 is provided with an upper screening chamber and a lower conveying chamber separated by a mesh screen 31. The top of the screening disc 3 is provided with a feed inlet 32 connected to the upper screening chamber, and the bottom of the screening disc 3 is provided with a discharge outlet 33 connected to the lower conveying chamber. The side wall of the screening disc 3 is provided with a slag discharge outlet connected to the upper screening chamber and a slag discharge channel 34 connected to the slag discharge outlet, so that sand, gravel, waste and other materials in the mixture can be discharged through the slag discharge channel 34, and catalytic slurry can be discharged into the catalyst cylinder 4 below through the discharge outlet 33.
[0022] The bottom of the screening disc 3 is provided with several buffer springs 35 that are fixedly connected to the support frame 1. The outer wall of the screening disc 3 is provided with a screening motor 36 that is fixedly connected to it, so that the screening disc 3 can be driven to vibrate back and forth by the vibration of the screening motor 36, thereby realizing the screening of soil materials.
[0023] like Figure 2 As shown, the catalytic cylinder 4 is located directly below the discharge port 33 of the screening disc 3. The catalytic cylinder 4 includes an inner cylinder 41 with a top opening, a removable sealing cover 42 located at the top opening, a tray 43 that is movably and vertically disposed within the inner cylinder 41, and a removable outer cylinder 44 fitted around the outer periphery of the inner cylinder 41. (Reference) Figure 3 As shown, the bottom of the cover 42 is provided with several ultraviolet lamp beads 421 arranged facing the tray 43. Specifically, the cover 42 is provided with a control circuit (not shown in the figure) connected to the ultraviolet lamp beads 421 to realize the circuit control of the ultraviolet lamp beads 421 irradiation. In addition, the inner wall of the inner cylinder 41 or the inner wall of the tray 43 is provided with a photocatalyst layer so that a catalytic digestion reaction occurs under the irradiation of the ultraviolet lamp beads 421 to remediate the soil. Since it is a mature existing technology in this field, its specific structure and principle will not be shown or described here.
[0024] refer to Figure 6 As shown, the side and bottom walls of the tray 43 are provided with several spaced-apart drainage holes 431. The tray 43 is provided with four detachably connected cables 432. The four cables 432 are evenly spaced along the circumference with the axis of the inner cylinder 41 as the center. Figure 4 , Figure 5 As shown, the outer cylinder 44 is provided with a liftable handle 441 that is movably embedded in its side wall. One end of the cable 432 is detachably connected to the tray 43, and the other end passes around the top of the side wall of the inner cylinder 41 and is fixedly connected to the handle 441, so that the tray 43 can be lifted or lowered by pulling the handle 441 to drive the cable 432. Specifically, the top of the side wall of the inner cylinder 41 is provided with four slots 411 evenly spaced along the circumferential direction. The slots 411 are adapted to the cable 432, and the cable 432 is slidably embedded in the slots 411. The outer wall of the inner cylinder 41 is also provided with four cover strips 412 evenly spaced along the circumference. The cover strips 412 are located directly below the slots 411. The cover strips 412 are provided with longitudinal through grooves 413 that are adapted to the cable 432. The cable 432 is movably inserted into the longitudinal through grooves 413 of the cover strips 412. The longitudinal through grooves 413 are arranged parallel to the central axis of the inner cylinder 41 to guide the sliding of the cable 432 and make it move vertically up and down.
[0025] like Figure 4As shown, the outer cylinder 44 has four guide grooves 442 evenly spaced along the circumference on its side wall. The handle 441 is movably inserted into the guide groove 442. The guide groove 442 includes a longitudinal groove 4421 and a locking groove 4422 that are connected to each other. The longitudinal groove 4421 is parallel to the central axis of the outer cylinder 44. The locking groove 4422 is located at the bottom end of the longitudinal groove 4421 and has a cross-section of "G". When the handle 441 is pulled down into the locking groove 4422, it can lock and fix the handle 441 to prevent it from slipping upward. The handle 441 includes an inner arc strip 4411 movably disposed between the inner wall of the outer cylinder 44 and the outer wall of the inner cylinder 41, a connecting rod 4412 movably disposed in the guide groove 442, and an outer arc strip 4413 disposed on the outer side of the outer wall of the outer cylinder 44. The outer arc strip 4413 is connected to the inner arc strip 4411 through the connecting rod 4412. That is, both ends of the connecting rod 4412 are fixedly connected to the outer arc strip 4413 and the inner arc strip 4411 respectively. The end of the cable 432 is fixedly connected (e.g., by welding) to the inner arc strip 4411, the connecting rod 4412, or the outer arc strip 4413, so that pulling the outer arc strip 4413 of the handle 441 can drive the cable 432 to slide, thereby realizing the lifting and lowering movement of the tray 43.
[0026] Further reference Figure 6 As shown, four hanging holes 433 are evenly spaced along the circumference near the top of the side wall of the tray 43. The end of the cable 432 is provided with a hook 434 that is fixedly connected to it. The hook 434 is detachably inserted into the hanging hole 433.
[0027] In practical use, first open the cover 21 of the mixing drum 2, put the collected farmland soil to be restored into the mixing drum 2 and add water, then close the cover 21; turn off the power to the electromagnet 51 to disconnect its magnetic attraction to the metal ring 22, and start the mixing motor 11 to drive the mixing box to rotate and mix the materials; after the mixing is completed, the mixing motor 11 stops working, the electromagnet 51 is energized and works to ensure that the mixing drum 2 is in a state where the opening is facing downwards (e.g., Figure 2(As shown in the diagram); open the top cover 42 of the catalytic cylinder 4, start the screening motor 36 and remove the cylinder cover 21 of the mixing cylinder 2. The mixed soil material flows out from the cylinder opening of the mixing cylinder 2 and flows into the upper screening chamber of the screening disc 3 through the feed inlet 32. The screening motor 36 drives the screen 31 of the screening disc 3 to vibrate back and forth. Sand, gravel, waste and other materials in the soil material flow out through the slag discharge channel 34. The catalytic slurry flows through the screen 31 into the lower conveying chamber below and finally flows into the tray 43 inside the catalytic cylinder 4 through the discharge port 33 at the bottom. After the slurry material is completely filtered and screened, the screening motor 36 stops working, the cover 42 is closed on the catalytic cylinder 4, and the control of the ultraviolet lamp bead 421 is turned on. The path allows the ultraviolet lamp 421 to work and emit light to irradiate the mud material in the tray 43. Under the irradiation of ultraviolet light and the catalytic action of the photocatalyst layer on the inner wall of the inner cylinder 41, the mud material undergoes a catalytic decomposition reaction, efficiently degrading organic pollutants in the contaminated soil for soil remediation. After the soil remediation is completed, the cover 42 is opened and the outer arc strip 4413 of the handle 441 is manually pressed down. The cable 432 slides along the longitudinal through groove 413 and the slot 411 under the pull of the outer arc strip 4413, thereby driving the tray 43 connected to the other end of the cable 432 to rise upward. The handle 441 is pulled and slid into the locking groove 4422 of the guide groove 442 for locking. At this time, the pressure on the outer arc strip 4413 can be released, making it easier for the operator to separate and remove the soil in the tray 43.
[0028] In summary, the farmland soil on-site remediation device provided by this utility model has a simple structure, is easy to transfer and transport, is suitable for on-site remediation of farmland soil, is easy to operate and improves the efficiency of on-site farmland soil remediation, and uses ultraviolet light photocatalysis to decompose pollutants in the soil, avoiding secondary pollution of the soil.
[0029] The above are merely preferred embodiments of the present utility model and do not limit the patent scope of the present utility model. All equivalent changes and modifications made within the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A field soil remediation device for farmland, characterized in that: It includes a support frame (1), and a mixing cylinder (2), a screening plate (3), and a catalyst cylinder (4) arranged sequentially from top to bottom on the support frame (1); The mixing cylinder (2) is rotatably mounted directly above the screening disc (3). The top of the screening disc (3) is provided with a feed inlet (32) located directly below the mixing cylinder (2), and the bottom is provided with a discharge outlet (33) located directly above the catalyst cylinder (4). The catalyst cylinder (4) includes an inner cylinder (41) with a top opening and a detachable cover (42) provided at the top opening. The bottom of the cover (42) is provided with a number of spaced ultraviolet lamp beads (421).
2. The farmland soil on-site remediation device according to claim 1, characterized in that: The support frame (1) is provided with a mixing motor (11) fixedly connected thereto, and a metal ring (22) is fixedly sleeved on the outer periphery of the mixing cylinder (2) and arranged coaxially thereto. The metal ring (22) is connected to the mixing motor (11) and is rotatably mounted on the support frame (1).
3. The farmland soil on-site remediation device according to claim 2, characterized in that: The support frame (1) is also provided with magnetic locking posts (5) spaced apart on the outside of the metal ring (22), and the ends of the magnetic locking posts (5) are provided with electromagnets (51) arranged toward the metal ring (22).
4. The farmland soil on-site remediation device according to claim 1, characterized in that: The screening disc (3) is provided with an upper screening chamber and a lower feeding chamber separated by a mesh screen (31). The feed inlet (32) is connected to the upper screening chamber, and the discharge port (33) is connected to the lower feeding chamber. The side wall of the screening disc (3) is also provided with a slag discharge port that communicates with the upper screening chamber, and a slag discharge channel (34) that communicates with the slag discharge port.
5. The farmland soil on-site remediation device according to claim 4, characterized in that: The bottom of the screening disc (3) is provided with several buffer springs (35) that are fixedly connected to the support frame (1), and the outer wall of the screening disc (3) is provided with a screening motor (36) that is fixedly connected to it.
6. The farmland soil on-site remediation device according to claim 1, characterized in that: The catalyst cylinder (4) also includes a tray (43) that can be raised and lowered and disposed in the inner cavity of the inner cylinder (41), and an outer cylinder (44) that is sleeved on the outer periphery of the inner cylinder (41). The tray (43) has several spaced drainage holes (431) on its side wall and bottom wall. The tray (43) is provided with four detachably connected cables (432). The outer cylinder (44) is provided with a liftable handle (441) that is embedded in its side wall. One end of the cable (432) is detachably connected to the tray (43), and the other end passes around the top of the side wall of the inner cylinder (41) and is connected to the handle (441).
7. The farmland soil on-site remediation device according to claim 6, characterized in that: The side wall of the tray (43) is provided with four spaced hanging holes (433), and the end of the cable (432) is provided with a hook (434) fixedly connected thereto. The hook (434) is detachably inserted into the hanging hole (433).
8. The farmland soil on-site remediation device according to claim 6, characterized in that: The inner cylinder (41) has four spaced slots (411) on the top of its side wall, and the cable (432) is slidably embedded in the slots (411). The outer wall of the inner cylinder (41) is also provided with four spaced cover strips (412). The cover strips (412) are located directly below the slot (411) and are provided with a longitudinal through groove (413) adapted to the cable (432). The cable (432) is movably inserted into the longitudinal through groove (413).
9. The farmland soil on-site remediation device according to claim 6, characterized in that: The outer cylinder (44) is provided with a guide groove (442) that penetrates its side wall, and the handle (441) is movably inserted into the guide groove (442); The guide groove (442) includes a connected longitudinal groove (4421) and a locking groove (4422). The longitudinal groove (4421) is parallel to the central axis of the outer cylinder (44), and the locking groove (4422) is located at the bottom end of the longitudinal groove (4421) and is in the shape of a "G".
10. The farmland soil on-site remediation device according to claim 9, characterized in that: The handle (441) includes an inner arc strip (4411) located between the inner wall of the outer cylinder (44) and the outer wall of the inner cylinder (41), a connecting rod (4412) movably disposed in the guide groove (442), and an outer arc strip (4413) located outside the outer wall of the outer cylinder (44). The two ends of the connecting rod (4412) are fixedly connected to the inner arc strip (4411) and the outer arc strip (4413), respectively.