Soil detecting and screening device for heavy metal pollution

Abstract

The utility model relates to the technical field of soil detecting and screening equipment, and discloses a soil detecting and screening device for heavy metal pollution. Comprising a fixing plate and a mounting frame, and further comprises a driving part arranged at the top of the fixing plate, a connecting rod is arranged on one side of the driving part, and two sets of connecting blocks are rotationally arranged on the outer side of the connecting rod. According to the soil screening device, the mounting frame and the screening frame can be conveniently driven to move, then soil raw materials can be conveniently screened, the stability of the mounting frame during moving can be conveniently improved through matched use of the connecting frame, pulleys and sliding rods, and the screening frame can be conveniently limited through matched use of the connecting frame and a clamping frame; and through cooperative use of a rotating rod and a clamping block, the connecting frame can be conveniently limited, and then the screening frame can be conveniently and rapidly mounted and dismounted.

Description

Technical Field

[0001] This utility model relates to the technical field of soil testing and screening equipment, specifically a soil testing and screening device for heavy metal pollution. Background Technology

[0002] Heavy metal contaminated soil testing is the process of scientifically determining the content of toxic heavy metals such as lead (Pb), cadmium (Cd), mercury (Hg), arsenic (As), and chromium (Cr) in soil. The testing procedure includes: sampling (collecting topsoil from the 0-20cm layer using a grid or random method to avoid cross-contamination), pretreatment (air drying, grinding, and passing through a 100-mesh nylon sieve), digestion (using a nitric acid-hydrofluoric acid-hydrogen peroxide system via microwave digestion), and instrumental analysis (atomic absorption spectrometry / AAS, inductively coupled plasma mass spectrometry / ICP-MS, or X-ray fluorescence spectrometry / XRF). Key indicators must comply with the "Soil Environmental Quality Standard for Agricultural Land Soil Pollution Risk Control" (GB 15618-2018), such as a cadmium limit of 0.3-0.8 mg / kg (pH graded). Testing should focus on the available forms of heavy metals (DTPA extraction method) and their spatial distribution characteristics, combining GIS technology to create a pollution heat map and assess the ecological risk index (RI) and human health risk (HQ). High-precision detection requires quality control of blank controls, parallel samples, and standard substances (such as GSS series), and the data needs to be analyzed by principal component analysis (PCA) to determine the source of pollution (industrial emissions, agricultural inputs, etc.).

[0003] In the detection of heavy metal contaminated soil, the use of screening devices is crucial because it can effectively separate particles in soil samples, providing accurate samples for subsequent chemical analysis. However, existing screening devices have some inconveniences in practical applications, the most significant being the problem of rapid installation and removal of the screens. Traditional screening devices typically use fixed screen designs, requiring tools for installation and removal. This process is not only time-consuming but also demands a high level of skill from the operator, potentially leading to errors when changing screens and affecting screening accuracy. Furthermore, frequent screen changes increase operational complexity and reduce work efficiency, especially in high-throughput detection environments where this time waste is even more pronounced. Utility Model Content

[0004] The purpose of this invention is to provide a soil testing and screening device for heavy metal pollution, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a soil detection and screening device for heavy metal pollution, comprising a fixing plate and a mounting frame, and further comprising:

[0006] A driving component is located on the top of the fixed plate. A connecting rod is provided on one side of the driving component. Two sets of connecting blocks are rotatably mounted on the outer side of the connecting rod, and one side of the connecting blocks is fixed to one side of the mounting frame.

[0007] A connecting frame is fixed to the bottom of the mounting frame. The inner wall of the connecting frame has two sets of pulleys that rotate. A sliding rod is rolled between the two sets of pulleys, and one end of the sliding rod is fixed to one side of the fixed plate.

[0008] A screening frame is located on the inner wall of an installation frame. Both sides of the installation frame are fixed with snap-fit ​​blocks. A rotating rod is snapped into the inner wall of the snap-fit ​​block. The upper end of the rotating rod rotates with a limit frame. The bottom of the limit frame is fixed with a snap-fit ​​frame, and the inner wall of the snap-fit ​​frame is snapped into the outer side of the screening frame.

[0009] Preferably, the driving component includes a motor fixed to the top of the fixed plate, the output end of the motor is fixed with a turntable, and the eccentric part of the turntable is rotatably connected to the inner wall of the connecting rod through a rotating shaft.

[0010] Preferably, a support plate is fixed to the other end of the slide rod, and a base plate is fixed to one side of the support plate, and one side of the base plate is fixed to one side of the fixed plate.

[0011] Preferably, a first guide frame and a second guide frame are fixed to one side of the mounting frame.

[0012] Preferably, two sets of fixing rods are fixed to the top of the screening frame, and the other end of each set of fixing rods is fixed with a handle for pulling the screening frame to move.

[0013] Preferably, a guide plate for introducing soil raw materials into the screening frame is fixed on one side of the mounting frame, and a support frame is fixed at the bottom of the guide plate, with the bottom of the support frame fixed to one side of the mounting frame.

[0014] Preferably, a support rod is fixed to the inner wall of the mounting frame, and a support plate for supporting the screening frame is fixed to the top of the support rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model, by setting a driving component, can easily move the connecting rod. By setting the connecting rod and connecting block in combination, it can easily move the installation frame and screening frame, thereby facilitating the screening of soil raw materials. By setting the connecting frame, pulley and sliding rod in combination, it can easily improve the stability of the installation frame during movement. By setting the connecting frame and snap-fit ​​frame in combination, it can easily limit the screening frame. By setting the rotating rod and snap-fit ​​block in combination, it can easily limit the connecting frame, thereby facilitating the quick installation and disassembly of the screening frame. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of the soil detection and screening device for heavy metal pollution provided by this utility model;

[0018] Figure 2 A schematic diagram of the drive component structure provided by this utility model;

[0019] Figure 3 A schematic diagram of the fixing plate and mounting frame structure provided by this utility model;

[0020] Figure 4 Exploded view of the mounting frame and screening frame provided by this utility model.

[0021] In the diagram: 1. Fixed plate; 2. Mounting frame; 3. Drive component; 31. Motor; 32. Turntable; 4. Connecting rod; 5. Connecting block; 6. Connecting frame; 7. Pulley; 8. Sliding rod; 9. Screening frame; 10. Clamping block; 11. Rotating rod; 12. Limiting frame; 13. Clamping frame; 14. Support plate; 15. Base plate; 16. First guide frame; 17. Second guide frame; 18. Fixed rod; 19. Handle; 20. Support frame; 21. Guide plate; 22. Support rod; 23. Bearing plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 As shown, a soil screening device for heavy metal pollution includes a fixed plate 1 and a mounting frame 2. A driving component 3 is located on the top of the fixed plate 1, and a connecting rod 4 is provided on one side of the driving component 3. Two sets of connecting blocks 5 are rotatably connected to the outer side of the connecting rod 4, and one side of the connecting block 5 is fixed to one side of the mounting frame 2. A connecting frame 6 is fixed to the bottom of the mounting frame 2, and two sets of pulleys 7 are rotatably connected to the inner wall of the connecting frame 6. A sliding rod 8 is rolled between the two sets of pulleys 7, and one end of the sliding rod 8 is fixed to one side of the fixed plate 1. By setting the driving component 3, the connecting rod 4 can be easily moved. The connecting rod 4 acts as a driving bridge. After the connecting rod 4 is driven, it will drive the connecting block 5, the mounting frame 2 and the screening frame 9 to move back and forth, thereby facilitating the screening of soil raw materials. By setting the connecting frame 6, pulleys 7 and sliding rod 8 in cooperation, the stability of the mounting frame 2 during movement can be easily improved.

[0024] The screening frame 9 is located on the inner wall of the mounting frame 2. Both sides of the mounting frame 2 are fixed with snap-fit ​​blocks 10. A rotating rod 11 is snapped into the inner wall of the snap-fit ​​block 10. A limiting frame 12 rotates at the upper end of the rotating rod 11, and a snap-fit ​​frame 13 is fixed to the bottom of the limiting frame 12. The inner wall of the snap-fit ​​frame 13 is snapped into the outer side of the screening frame 9. The snap-fit ​​block 10 facilitates connection with the rotating rod 11. A sliding groove is provided inside the snap-fit ​​block 10, and a slider is fixed outside the rotating rod 11. During installation, the sliding groove and the slider correspond. After installation, the rotating rod 11 can be rotated to adjust the position of the slider, preventing the rotating rod 11 from detaching from the snap-fit ​​block 10 during screening. The rotating rod 11 facilitates connection with the limiting frame 12, and the limiting frame 12 facilitates fixing the snap-fit ​​frame 13. The design of the snap-fit ​​frame 13 facilitates limiting multiple sets of limiting blocks within the screening frame 9, thereby facilitating the installation of the screening frame 9 with limited positioning.

[0025] The driving component 3 includes a motor 31 fixed to the top of the fixed plate 1. A turntable 32 is fixed to the output end of the motor 31, and the eccentric part of the turntable 32 is rotatably connected to the inner wall of the connecting rod 4 through a rotating shaft. The design of the motor 31 can easily drive the turntable 32 to rotate, which in turn can drive the connecting rod 4 at the eccentric part to rotate.

[0026] The other end of the slide bar 8 is fixed with a support plate 14, and a base plate 15 is fixed to one side of the support plate 14. One side of the base plate 15 is fixed to one side of the fixed plate 1. By setting the support plate 14 and the base plate 15 together, a stable fulcrum can be provided for the slide bar 8.

[0027] The first guide frame 16 and the second guide frame 17 are fixed on one side of the mounting frame 2 respectively. The design of the first guide frame 16 facilitates the discharge of soil blocked by the screen holes, and the design of the second guide frame 17 facilitates the discharge of soil screened out.

[0028] Two sets of fixing rods 18 are fixed to the top of the screening frame 9. The other end of each set of fixing rods 18 is fixed with a handle 19 for pulling the screening frame 9 to move. By setting the fixing rods 18 and the handles 19 together, the screening frame 9 can be easily pulled to move. It should be noted that the screening frame 9 cannot be pulled when it is installed in the mounting frame 2, because one side is blocked by the first guide frame 16 and the other side is blocked by the mounting frame 2. It can only be pulled by the handle 19 after the screening frame 9 is removed from the mounting frame 2.

[0029] A guide plate 21 for introducing soil raw materials into the screening frame 9 is fixed on one side of the mounting frame 2. A support frame 20 is fixed at the bottom of the guide plate 21, and the bottom of the support frame 20 is fixed to one side of the mounting frame 2. The support frame 20 is designed to improve the stability of the guide plate 21, and the guide plate 21 is designed to introduce soil raw materials into the screening frame 9.

[0030] The inner wall of the mounting frame 2 is fixed with a support rod 22, and the top of the support rod 22 is fixed with a support plate 23 for supporting the screening frame 9; the support rod 22 and the support plate 23 can be used together to provide a fulcrum for the screening frame 9.

[0031] Working principle: First, the soil raw material is fed into the screening frame 9 through the guide plate 21. Then, the motor 31 is turned on, which drives the turntable 32 to rotate. The rotation of the turntable 32 drives the connecting rod 4 to move, which in turn drives the connecting block 5 to move. The movement of the connecting block 5 drives the mounting frame 2 to move, which in turn drives the screening frame 9 to move back and forth. The back and forth movement of the screening frame 9 can screen the soil raw material. The screened soil is discharged through the second guide frame 17. The discharged soil can be collected and stored by a trolley. Soil blocked by the screen mesh is discharged through the first guide frame 16. The soil can also be caught and stored on a trolley. When the screening frame 9 needs to be installed quickly, first align the four sets of limiting blocks on the screening frame 9 with the four sets of snap-fit ​​brackets 13 and push them in. Then, the worker holds the limiting bracket 12 and puts the screening frame 9 into the installation frame 2 until the screening frame 9 is in contact with the support plate 23. The rotating rod 11 will also snap into the snap-fit ​​block 10. At this time, the slider outside the rotating rod 11 corresponds to the slide groove of the snap-fit ​​block 10. After snapping in, rotate the rotating rod 11 to rotate the slider outside the rotating rod 11 to another position that does not correspond to the slide groove in the snap-fit ​​block 10. This completes the quick installation of the screening frame 9 and saves a lot of installation tools.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soil detection and screening device for heavy metal pollution, comprising a fixed plate (1) and a mounting frame (2), characterized in that, Also includes: The driving piece (3) is arranged at the top of the fixed plate (1), one side of the driving piece (3) is provided with a connecting rod (4), the outer side of the connecting rod (4) is rotated with two groups of connecting blocks (5), and one side of the connecting block (5) is fixed with one side of the mounting frame (2); The connecting frame (6) is fixed to the bottom of the mounting frame (2), the inner wall of the connecting frame (6) is rotated with two groups of pulleys (7), the sliding rod (8) is connected between the two groups of pulleys (7), and one end of the sliding rod (8) is fixed with one side of the fixed plate (1); The screening frame (9) is located in the inner wall of the mounting frame (2), the two sides of the mounting frame (2) are fixed with clamping blocks (10), the inner wall of the clamping block (10) is clamped with a rotating rod (11), the upper end of the rotating rod (11) is rotated with a limiting frame (12), the bottom of the limiting frame (12) is fixed with a clamping frame (13), and the inner wall of the clamping frame (13) is clamped with the outer side of the screening frame (9).

2. A soil testing and screening apparatus for heavy metal contamination as claimed in claim 1 wherein: The driving piece (3) includes a motor (31) fixed to the top of the fixed plate (1), the output end of the motor (31) is fixed with a rotating disc (32), and the eccentric part of the rotating disc (32) is connected with the inner wall of the connecting rod (4) through a rotating shaft.

3. A soil testing and screening apparatus for heavy metal contamination as claimed in claim 1, wherein: The other end of the sliding rod (8) is fixed with a support plate (14), one side of the support plate (14) is fixed with a bottom plate (15), and one side of the bottom plate (15) is fixed with one side of the fixed plate (1).

4. The device for detecting and screening soil contaminated by heavy metals according to claim 1, characterized in that: One side of the mounting frame (2) is respectively fixed with a first material guide frame (16) and a second material guide frame (17).

5. A soil testing and screening apparatus for heavy metal contamination as claimed in claim 1, wherein: The top of the screening frame (9) is fixed with two groups of fixed rods (18), and the other end of the two groups of fixed rods (18) is fixed with a handle (19) for pulling the screening frame (9) to move.

6. A soil testing and screening apparatus for heavy metal contamination as claimed in claim 1, wherein: One side of the mounting frame (2) is fixed with a material guide plate (21) for introducing soil raw materials into the screening frame (9), the bottom of the material guide plate (21) is fixed with a support frame (20), and the bottom of the support frame (20) is fixed with one side of the mounting frame (2).

7. A soil testing and screening apparatus for heavy metal contamination as claimed in claim 1, wherein: The inner wall of the mounting frame (2) is fixed with a support rod (22), the top of the support rod (22) is fixed with a bearing plate (23) for bearing the screening frame (9).

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