Screening device for soil pollution treatment

Abstract

The utility model belongs to the technical field of soil pollution treatment, and particularly relates to a screening device for soil pollution treatment. The connecting assembly is fixed to the top of the eccentric vibration assembly and comprises a plurality of connecting rods fixed to the top of the eccentric vibration assembly and a connecting disc fixed to the tops of the connecting rods; the screening assembly is detachably connected to the top of the connecting disc and comprises a screening disc and a sealing disc detachably connected to the top of the screening disc; the screening disc is composed of a plurality of screening disc bodies, and every two connected screening disc bodies are detachably connected. The screening device disclosed by the utility model can screen out soil samples with different particle sizes step by step, so that the distribution and fixation conditions of different pollutants in soil with different particles can be accurately known through subsequent detection, and different treatment methods can be adopted in a targeted manner, so that guidance can be provided for soil pollution treatment; and the improvement of the treatment effect is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of soil pollution remediation technology, specifically relating to a screening device for soil pollution remediation. Background Technology

[0002] Soil pollution refers to the entry of substances into the soil due to human factors, causing changes in the soil's physical, chemical, and biological properties, thus affecting its function and effective utilization. The main causes of soil pollution are as follows: Firstly, untreated or substandard industrial wastewater from industrial production processes contains large amounts of heavy metals (such as cadmium, mercury, lead, manganese, and chromium), organic matter, and toxic substances. Direct or indirect discharge into the environment leads to soil pollution. Secondly, excessive use of pesticides in agricultural production results in pesticide residues entering the soil, affecting soil microbial activity and the soil ecological balance. The irrational use of chemical fertilizers also leads to soil nutrient imbalance, causing soil compaction and affecting crop growth and yield. Thirdly, the discharge of domestic waste and sewage is also a source of soil pollution. Domestic waste contains large amounts of organic matter, heavy metals, and toxic substances; if directly landfilled or dumped without treatment, it will pollute the soil. Similarly, domestic sewage contains high concentrations of organic matter, phosphorus, and nitrogen pollutants; if directly discharged into the soil without treatment, it will also pollute the soil. Furthermore, in areas near mineral deposits containing heavy metals or radioactive elements, the weathering and decomposition of the minerals can affect the surrounding soil.

[0003] In existing technologies, contaminated soil can be treated through physical remediation, chemical remediation, and bioremediation, depending on actual needs. When treating soil pollution, it is necessary to first sample and test the contaminated soil. During the testing of the sampled soil, it is necessary to first sieve and separate soil particles of different sizes so that subsequent testing can accurately understand the distribution and fixation of different pollutants in different soil particles. This allows for targeted implementation of different treatment methods, providing guidance for soil pollution remediation and thus helping to improve the remediation effect.

[0004] Existing technologies disclose screening devices for soil pollution remediation, such as the screening device for soil pollution remediation disclosed in CN217856476U, which includes a pressure device. The pressure device includes a motor housing, with connecting columns at both ends. A housing is connected to the outer end of each connecting column. A rotating column is connected to the drive end of the motor housing. A sliding structure is installed at one end of the rotating column, and a pressure spring is installed at the bottom of the rotating column. A connecting plate is connected to one end of the pressure spring, and a movable column is provided between the inner sides of both ends of the connecting plate. A rolling column is installed on the movable column. The device disclosed in this patent drives the rotating column to rotate via the motor housing, thereby causing the rolling column to roll. At this time, the hydraulic rod inside the pressure spring applies downward pressure, thus better compacting the soil. The drive motor drives one gear to rotate, thereby driving the other gears to mesh and move, thus driving the mixing blade to perform better and more comprehensive mixing.

[0005] While the sieving device for soil pollution remediation disclosed in this patent undeniably achieves the aforementioned effects, it also has certain shortcomings: During soil pollution sample testing, the crushing device handles stones and metals in the sample. Smaller particles of these materials may mix with the soil particles after crushing, making them difficult to separate, which can affect the accuracy of the test. Furthermore, the number of filters in the sieving device is fixed and cannot be adjusted according to actual needs.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] The purpose of this invention is to provide a screening device for soil pollution remediation, so as to solve the problems existing in the screening devices for soil pollution remediation in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A screening device for soil pollution remediation includes:

[0010] Eccentric vibration assembly;

[0011] A connecting assembly fixed to the top of the eccentric vibration assembly, the connecting assembly including multiple connecting rods fixed to the top of the eccentric vibration assembly and a connecting plate fixed to the top of the multiple connecting rods;

[0012] The screening assembly connected to the top of the connecting plate is disassembled. The screening assembly includes a screening disc and a sealing disc that is disassembled and connected to the top of the screening disc. The screening disc is composed of multiple screening disc bodies, and two connected screening disc bodies are disassembled and connected.

[0013] Preferably, the eccentric vibration assembly includes a base plate, multiple guide rods fixed to the top of the base plate and each having a limiting cap fixed to its top, a support plate located above the base plate and penetrated by the multiple guide rods and slidably guided thereto, a first spring abutting the limiting cap at its top and abutting the support plate at its bottom and sleeved on the guide rods, a second spring abutting the support plate at its top and abutting the base plate at its bottom and sleeved on the guide rods, a motor fixed to the middle of the support plate, and an eccentric cam fixed to the output shaft of the motor.

[0014] Preferably, the motor is a dual-shaft motor, and an eccentric cam is fixed on each of the output shafts at both ends of the motor. A counterweight is fixed to the end of the eccentric cam away from the output shaft of the motor by bolts.

[0015] Preferably, the support plate has a clearance groove corresponding to the eccentric cam.

[0016] Preferably, the sidewalls of the connecting disc and the main body of the screening disc are provided with multiple circumferentially extending fixing grooves at intervals, one end of each fixing groove having a vertically upward opening; the bottom of the main body of the screening disc and the bottom of the sealing disc are integrally formed with a connecting ring, and the connecting ring is provided with threaded cylinders corresponding to the fixing grooves at intervals, a locking rod is threadedly connected to the threaded cylinder, and a locking knob is fixed to the outer end of the locking rod; when the threaded cylinder enters the opening, the main body of the screening disc or the sealing disc is rotated, and the threaded cylinder enters the fixing groove; when the locking knob is tightened, the locking knob is tightly attached to the outer wall of the fixing groove.

[0017] Preferably, the length of the threaded cylinder is less than the thickness of the connecting disc and the screening disc body; the locking knob is provided with anti-slip texture.

[0018] Preferably, each of the screening disc bodies above the bottommost screening disc body has a screening screen fixed inside, and the aperture of the screening screen in the upper screening disc body is larger than the aperture of the screening screen in the lower screening disc body.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention comprises an eccentric vibration assembly, a connecting assembly, and a screening assembly. The screening assembly consists of multiple screening discs, which can be assembled in appropriate numbers and with suitable mesh sizes to facilitate the step-by-step screening of soil samples of different particle sizes. This allows for accurate understanding of the distribution and fixation of different pollutants in soil particles through subsequent testing, enabling targeted treatment methods. This provides guidance for soil pollution remediation and helps improve remediation effectiveness. The entire device has a simple structure, is easy to disassemble, and can be easily assembled according to needs, perfectly suited to actual screening requirements. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 for Figure 1 Main view;

[0023] Figure 3 for Figure 1 Right view;

[0024] Figure 4 This is a schematic diagram of the eccentric vibration component and the connecting component of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the screening disc body of this utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the sealing cap of this utility model;

[0027] Figure 7 This is a schematic diagram of the locking knob of this utility model.

[0028] Explanation of key figure labels:

[0029] 10. Eccentric vibration assembly; 11. Base plate; 12. Guide rod; 13. Support plate; 131. Clearance groove; 14. First spring; 15. Second spring; 16. Motor; 17. Eccentric cam; 18. Counterweight;

[0030] 20. Connecting component; 21. Connecting rod; 22. Connecting plate; 221. Fixing groove; 222. Groove opening;

[0031] 30. Screening assembly; 31. Screening disc; 311. Screening disc body; 312. Screening mesh; 32. Sealing disc; 321. Connecting ring; 322. Threaded cylinder; 323. Locking rod; 324. Locking knob; 325. Anti-slip texture. Detailed Implementation

[0032] The technical solution of this utility model patent will be clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] Example

[0034] See appendix Figure 1-7 A screening device for soil pollution remediation, comprising:

[0035] The eccentric vibration assembly 10 includes a base plate 11, multiple guide rods 12 fixed to the top of the base plate 11 and having a limiting cap 121 fixed to the top, a support plate 13 located above the base plate 11 and penetrated by the multiple guide rods 12 and slidingly guided by the guide rods 12, a first spring 14 abutting the limiting cap 121 at the top and abutting the support plate 13 at the bottom and sleeved on the guide rods 12, a second spring 15 abutting the support plate 13 at the top and abutting the base plate 11 at the bottom and sleeved on the guide rods 12, a motor 16 fixed to the middle of the support plate 13, and an eccentric cam 17 fixed to the output shaft of the motor 16.

[0036] The connecting component 20 fixed to the top of the eccentric vibration assembly 10 includes multiple connecting rods 21 fixed to the top of the eccentric vibration assembly 10 and a connecting plate 22 fixed to the top of the multiple connecting rods 21; in this embodiment, the connecting rods 21 are fixed to the top of the support plate 13.

[0037] The screening assembly 30 connected to the top of the connecting plate 22 is disassembled, including the screening plate 31 and the sealing plate 32 connected to the top of the screening plate 31. The screening plate 31 is composed of multiple screening plate bodies 311, and two connected screening plate bodies 311 are disassembled and connected. Screening screens 312 are fixed in the screening plate bodies 311 above the bottom screening plate body 311, and the aperture of the screening screens 312 in the upper screening plate body 311 is larger than the aperture of the screening screens 312 in the lower screening plate body 311.

[0038] In this embodiment, the motor 16 is a dual-axis motor. An eccentric cam 17 is fixed on the output shafts at both ends of the motor 16. A counterweight 18 is fixed to the end of the eccentric cam 17 away from the output shaft of the motor 16 by bolts. The support plate 13 is provided with a clearance groove 131 corresponding to the eccentric cam 17, so as to avoid the eccentric cam 17 and the counterweight 18 from contacting the support plate 13.

[0039] In addition, in this embodiment, the sidewalls of the connecting disc 22 and the screening disc body 311 are provided with a plurality of fixing grooves 221 extending circumferentially at intervals. One end of the fixing groove 221 has a vertically upward slot 222. The top of the slot 222 of the connecting disc 22 penetrates the top of the connecting disc 22, and the top of the slot 222 of the screening disc body 311 penetrates the top of the screening disc body 311. A connecting ring 321 is integrally formed on the bottom of the screening disc body 311 and the bottom of the sealing disc 32. Threaded cylinders 322 corresponding to the fixing grooves 221 are provided on the connecting ring 321 at intervals. A locking rod 323 is internally threaded onto the threaded cylinder 322, and a locking knob 324 is fixed to the outer end of the locking rod 323. When the threaded cylinder 322 enters the slot 222, the screening disc body 311 or the sealing disc 32 is rotated, and the threaded cylinder 322 enters the fixing slot 221. It should be noted that when the screening disc body 311 is connected to the connecting disc 22, the connecting ring 321 of the screening disc body 311 extends into the connecting disc 22, and the outer wall of the connecting ring 321 is in contact with the inner wall of the connecting disc 22, so the threaded cylinder 322 of the screening disc body 311 enters the slot of the connecting disc 22. When the upper screening disc body 311 is connected to the lower screening disc body 311, the connecting ring 321 of the upper screening disc body 311 extends into the lower screening disc body 311 and the outer wall of the connecting ring 321 of the upper screening disc body 311 is in contact with the inner wall of the lower screening disc body 311. The threaded cylinder 322 of the upper screening disc body 311 enters the slot 222 and the fixing groove 221 of the lower screening disc body 311. When the locking knob 324 is tightened, the upper screening disc body 311 connects to the lower screening disc body 311. When the sealing disc 32 is connected to the screening disc body 311, the locking knob 324 is pressed against the outer wall of the fixing groove 221 of the lower screening disc body 311. When the sealing disc 32 is connected to the screening disc body 311, the connecting ring 321 of the sealing disc 32 extends into the screening disc body 311 and the outer wall of the connecting ring 321 of the sealing disc 32 is pressed against the inner wall of the screening disc body 311. The threaded cylinder 322 of the sealing disc 32 enters the groove 222 and fixing groove 221 of the screening disc body 311. When the locking knob 324 is tightened, the locking knob 324 is pressed against the outer wall of the fixing groove 221 of the screening disc body 311.

[0040] Secondly, in this embodiment, the length of the threaded cylinder 322 is less than the thickness of the connecting disc 22 and the screening disc body 311, which makes it easier to make the locking knob 324 fit tightly against the outer wall of the fixing groove 221; in addition, the locking knob 324 is provided with anti-slip texture 325.

[0041] In this application, the screening disc 31 in the screening assembly 30 is composed of multiple detachably connected screening disc bodies 311, so that screening disc bodies 311 with appropriate aperture screens 312 can be selected for assembly as needed. When assembling the screening disc 31, the connecting ring 321 of the upper screening disc body 311 is inserted into the lower screening disc body 311. At this time, the threaded cylinder 322 of the upper screening disc body 311 enters the groove 222 of the lower screening disc body 311, and the outer wall of the connecting ring 321 of the upper screening disc body 311 is attached to the inner wall of the lower screening disc body 311. Then, the upper screening disc body 311 is rotated, and the threaded cylinder 322 of the upper screening disc body 311 enters the fixing groove 221 of the lower screening disc body 311. Then, the locking rod 323 is screwed into the threaded cylinder 322 with the locking knob 324. After tightening the locking knob 324, the locking knob 324 is tightly attached to the outer wall of the fixing groove 221 of the lower screening disc body 311. In this way, multiple screening disc bodies 311 can be connected together.

[0042] Next, connect the bottom screening disc body 311 of the screening disc 31 to the connecting disc 22. Specifically, insert the connecting ring 321 of the screening disc body 311 into the screening disc body 311. At this time, the threaded cylinder 322 of the screening disc body 311 enters the groove 222 of the connecting disc 22, and the outer wall of the connecting ring 321 of the screening disc body 311 is in contact with the inner wall of the connecting disc 22. Then rotate the screening disc body 311, and the threaded cylinder 322 of the screening disc body 311 enters the fixing groove 221 of the connecting disc 22. Then, use the locking knob 324 to screw the locking rod 323 into the threaded cylinder 322. After tightening the locking knob 324, the locking knob 324 will be in close contact with the outer wall of the fixing groove 221 of the connecting disc 22. By doing this, the screening disc body 311 can be connected to the top of the connecting disc 22.

[0043] Before screening, the soil sample is tapped with a wooden stick or other material to break up larger clods, while stones, metal, or plastic film are manually removed from the soil sample. In actual soil sample testing, the required soil sample size is not large, so manual selection does not take much time or effort. Moreover, even without manual selection, the sieving device in this embodiment can separate the soil, making it unnecessary to specifically set up a crushing or breaking device to break up larger clods, stones, or metal. The pre-treated soil sample is then placed into the uppermost screening tray 311.

[0044] Then, the sealing disc 32 is sealed to the top of the screening disc body 311. Specifically, the connecting ring 321 of the sealing disc 32 is inserted into the screening disc body 311. At this time, the threaded cylinder 322 of the sealing disc 32 enters the groove 222 of the screening disc body 311, and the outer wall of the connecting ring 321 of the sealing disc 32 is in contact with the inner wall of the screening disc body 311. Then, the sealing disc 32 is rotated, and the threaded cylinder 322 of the sealing disc 32 enters the fixing groove 221 of the screening disc body 311. Then, the locking rod 323 is screwed into the threaded cylinder 322 with the locking knob 324. After tightening the locking knob 324, the locking knob 324 is tightly attached to the outer wall of the fixing groove 221 of the screening disc body 311. In this way, the sealing disc 32 can be connected to the top of the screening disc body 311.

[0045] The motor 16 is started, which drives the eccentric cam 17 and the counterweight 18 to rotate. The first spring 14 and the second spring 15 repeatedly stretch and compress, and the support plate 13 moves up and down along the guide rod 12. The support plate 13 drives the screening plate 31 to move up and down through the connecting rod 21 and the connecting plate 22, thereby driving the entire screening assembly 30 to move up and down. This causes the soil sample in the screening plate body 311 to vibrate. During this vibration process, the position of the soil sample changes continuously. Smaller soil particles pass through the screening mesh 312 and enter the lower screening plate body 311, while larger soil particles are retained. In this way, by selecting a screening plate body 311 with a screening mesh 312 of appropriate size, soil samples of different particle sizes can be screened out step by step. This allows for accurate understanding of the distribution and fixation of different pollutants in different soil particles through subsequent testing, enabling targeted treatment methods. This provides guidance for soil pollution remediation and helps improve the remediation effect.

[0046] Finally, it should be noted that multiple guide rods 12 are located on the outside of the screening disc 31. This way, when the screening disc 31 moves downward, the guide rods 12 will not come into contact with the screening disc 31, thus avoiding interference.

[0047] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A screening device for soil pollution remediation, characterized in that, include: Eccentric vibration assembly; A connecting assembly fixed to the top of the eccentric vibration assembly, the connecting assembly including multiple connecting rods fixed to the top of the eccentric vibration assembly and a connecting plate fixed to the top of the multiple connecting rods; The screening assembly connected to the top of the connecting plate is disassembled. The screening assembly includes a screening disc and a sealing disc that is disassembled and connected to the top of the screening disc. The screening disc is composed of multiple screening disc bodies, and two connected screening disc bodies are disassembled and connected.

2. The screening device for soil pollution remediation according to claim 1, characterized in that, The eccentric vibration assembly includes a base plate, multiple guide rods fixed to the top of the base plate and each having a limiting cap fixed to its top, a support plate located above the base plate and penetrated by the multiple guide rods and slidably guided therethrough, a first spring abutting the limiting cap at its top and abutting the support plate at its bottom and sleeved on the guide rods, a second spring abutting the support plate at its top and abutting the base plate at its bottom and sleeved on the guide rods, a motor fixed to the middle of the support plate, and an eccentric cam fixed to the output shaft of the motor.

3. The screening device for soil pollution remediation according to claim 2, characterized in that, The motor is a dual-axis motor, and an eccentric cam is fixed on each of the output shafts at both ends of the motor. A counterweight is fixed to the end of the eccentric cam away from the output shaft of the motor by bolts.

4. The screening device for soil pollution remediation according to claim 2, characterized in that, The support plate has a clearance groove corresponding to the eccentric cam.

5. The screening device for soil pollution remediation according to claim 1, characterized in that, The sidewall of the connecting disc and the sidewall of the screening disc body are provided with a plurality of fixing grooves extending circumferentially at intervals, and one end of the fixing groove has a vertically upward groove opening. The bottom of the screening disc body and the bottom of the sealing disc are integrally formed with a connecting ring. The connecting ring is provided with threaded cylinders corresponding to the fixed groove. A locking rod is threadedly connected to the threaded cylinder, and a locking knob is fixed to the outer end of the locking rod. When the threaded cylinder enters the groove, the screening disc body or the sealing disc is rotated, and the threaded cylinder enters the fixed groove. When the locking knob is tightened, the locking knob is tightly attached to the outer wall of the fixed groove.

6. The screening device for soil pollution remediation according to claim 5, characterized in that, The length of the threaded cylinder is less than the thickness of the connecting disc and the screening disc body; the locking knob is provided with anti-slip texture.

7. The screening device for soil pollution remediation according to claim 6, characterized in that, Each of the screening discs above the bottommost screening disc body has a screening screen fixed inside, and the aperture of the screening screen in the upper screening disc body is larger than that in the lower screening disc body.

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