Intelligent in-situ electrical method detection device for polluted land soil

Abstract

The utility model relates to an intelligent in-situ electrical method detection device for polluted land soil. The intelligent in-situ electrical method detection device comprises a base, a protective shell is mounted on the base; a stand column is installed on the protective shell. A detector for measuring the resistivity change of soil is mounted on the stand column; two groups of rotating shafts are symmetrically arranged on the base; a plurality of groups of polar plates are distributed at equal intervals in the circumferential direction of the rotating shaft and are rotationally mounted; a plugging mechanism is arranged on the base; the inserting and pulling mechanism can drive the rotating shaft to descend or ascend so as to drive the polar plate to be inserted into or pulled out of to-be-detected soil; an expansion mechanism is arranged on the base; the expansion mechanism drives the polar plate to rotate so as to increase or decrease the included angle between the polar plate and the rotating shaft; the polar plate is driven by the expansion mechanism to rotate, so that the soil is stressed and deformed, the contact area between the polar plate and the soil is maintained to be maximum, poor contact between the polar plate and the soil due to gaps between the soil is avoided, and the detection error is reduced.

Description

Technical Field

[0001] This utility model relates to a soil detection device, specifically an intelligent in-situ electrical resistivity tomography device for contaminated soil. Background Technology

[0002] By restoring the soil quality of contaminated sites, we can ensure the safety of agricultural products, prevent pollutants from entering the food chain, protect the ecological environment and human health, and promote the protection and sustainable development of land resources.

[0003] Methods for soil remediation at contaminated sites mainly include physical remediation, chemical remediation, bioremediation, and combined remediation. Because soil remediation is time-consuming and complex, it requires soil testing at different time points to adjust the remediation plan in real time based on the results. A common testing method is in-situ electrical resistivity tomography (EDT).

[0004] In-situ electrical resistivity testing assesses the effectiveness of remediation of contaminated sites by measuring changes in soil resistivity. Typically, two electrodes are inserted into the soil, connected to the positive and negative terminals of a detector, respectively. The detector then measures the soil's resistance to obtain reliable data.

[0005] Because there are gaps between the soil, the insertion of the electrode into the soil compresses the soil, which can reduce the gaps between the soil, but cannot completely eliminate them. Therefore, the contact between the electrode and the soil is incomplete, which makes it more likely that there will be errors between the test results and the actual values. Utility Model Content

[0006] The purpose of this invention is to provide an intelligent in-situ electrical resistivity tomography device for contaminated soil, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An intelligent in-situ electrical resistivity tomography (EDT) device for detecting contaminated soil includes a base; a protective shell is installed on the base.

[0009] A column is installed on the protective shell; a detector for measuring changes in soil resistivity is installed on the column.

[0010] Two sets of rotating shafts are symmetrically arranged on the base; the rotating shafts are equidistantly distributed in the circumferential direction and have multiple sets of electrode plates rotatably mounted on them;

[0011] The base is provided with an insertion and removal mechanism; the insertion and removal mechanism can drive the rotating shaft to descend or rise, so as to drive the electrode plate to be inserted into or pulled out of the soil to be tested.

[0012] An expansion mechanism is provided on the base; the expansion mechanism drives the electrode plate to rotate, thereby increasing or decreasing the angle with the rotating shaft.

[0013] The intelligent in-situ electrical resistivity tomography device for contaminated soil as described above includes: a plug-in / plug-out mechanism comprising a plug-in / plug-out motor mounted on the protective shell; a lead screw rotatably connected to the base mounted on the output end of the plug-in / plug-out motor; a lifting plate rotatably mounted on the rotating shaft; and an internally threaded sleeve threadedly connected to the lead screw rotatably mounted on the lifting plate.

[0014] The intelligent in-situ electrical resistivity tomography (E tomography) device for contaminated soil described above comprises: an expansion mechanism including an expansion motor mounted on a lifting plate; the output end of the expansion motor being fixedly connected to the rotating shaft; a connecting column rotatably connected to the rotating shaft being mounted on the lifting plate; a connecting plate rotatably connected to the electrode being mounted on the connecting column; a guide rod being mounted on the connecting plate; a threaded groove being formed on the rotating shaft; an internally threaded slider threadedly connected to the threaded groove being slidably mounted on the guide rod; a sliding block being slidably mounted on the guide rod; a hinged rod rotatably connected to the electrode being rotatably mounted on the sliding block; a compression spring being wound around the rotating shaft; and the two ends of the compression spring respectively contacting the internally threaded slider and the sliding block.

[0015] The intelligent in-situ electrical resistivity tomography device for contaminated soil described above includes: a fixed block mounted on the guide rod; a return spring wrapped around the rotating shaft; and the two ends of the return spring respectively contacting the sliding block and the fixed block.

[0016] The intelligent in-situ electrical resistivity tomography device for contaminated soil described above has a cone-shaped structure mounted on the end of the guide rod, which is rotatably connected to the rotating shaft.

[0017] The intelligent in-situ electrical resistivity tomography device for contaminated soil described above has multiple sets of anti-slip sleeves installed on the column to increase the coefficient of friction.

[0018] The intelligent in-situ electrical resistivity tomography device for contaminated soil described above has a counterweight platform installed on its base.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] The insertion and removal mechanism simultaneously drives two sets of electrode plates into the soil to the same depth, thereby increasing the accuracy of the test results. The expansion mechanism drives the electrode plates to rotate, causing the soil to deform under force, thus maximizing the contact area between the electrode plates and the soil and avoiding poor contact between the electrode plates and the soil due to gaps between them, thereby reducing the test error. Attached Figure Description

[0021] Figure 1A schematic diagram of the structure of an intelligent in-situ electrical resistivity tomography device for contaminated soil.

[0022] Figure 2 This is a schematic diagram of the column structure in an intelligent in-situ electrical resistivity tomography (OTT) device for contaminated soil.

[0023] Figure 3 This is a schematic diagram of the base structure of an intelligent in-situ electrical resistivity tomography device for contaminated soil.

[0024] Figure 4 This is a schematic diagram of the lifting plate in an intelligent in-situ electrical resistivity tomography device for contaminated soil.

[0025] Figure 5 This is a schematic diagram of the electrode plate in an intelligent in-situ electrical resistivity tomography device for detecting contaminated soil.

[0026] Figure 6 for Figure 5 A schematic diagram of the structure at point A in the middle.

[0027] In the diagram: 1. Base; 101. Counterweight platform;

[0028] 2. Protective casing;

[0029] 3. Column; 301 anti-slip sleeve;

[0030] 4. Detector;

[0031] 5. Plug and unplug the motor;

[0032] 6. Lead screw column;

[0033] 7. Lifting plate; 701. Internal threaded sleeve;

[0034] 8. Expansion motor;

[0035] 9. Connecting column;

[0036] 10. Shaft; 1001. Threaded groove;

[0037] 11. Electrode plate;

[0038] 12. Guide rod;

[0039] 13. Connecting disk;

[0040] 14. Internal thread slider;

[0041] 15. Compression spring;

[0042] 16. Sliding block;

[0043] 17. Return spring;

[0044] 18. Fixed block;

[0045] 19. Hinge rod;

[0046] 20. Frustum. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0048] Please see Figures 1-6 As an embodiment of the present invention, the intelligent in-situ electrical resistivity tomography device for contaminated soil includes a base 1; a protective shell 2 is installed on the base 1.

[0049] A column 3 is installed on the protective shell 2; a detector 4 for measuring the change in soil resistivity is installed on the column 3.

[0050] Two sets of rotating shafts 10 are symmetrically arranged on the base 1; the rotating shafts 10 are equidistantly distributed in the circumferential direction and have multiple sets of electrode plates 11 rotatably mounted on them;

[0051] The base 1 is provided with an insertion and removal mechanism; the insertion and removal mechanism can drive the rotating shaft 10 to descend or rise, so as to drive the electrode plate 11 to be inserted into or pulled out of the soil to be tested.

[0052] An expansion mechanism is provided on the base 1; the expansion mechanism drives the electrode plate 11 to rotate, thereby increasing or decreasing the angle with the rotating shaft 10.

[0053] In this embodiment, the electrode plates 11 on the two rotating shafts 10 are connected to the positive and negative poles of the detector 4, respectively. After the electrode plates 11 are in close contact with the soil, the soil resistance can be detected by the detector 4. Based on the detection results obtained at different time points, the rate of change of soil resistance can be clearly obtained, which can serve as an important basis for evaluating the results of soil improvement.

[0054] In use, after cleaning the surface of the soil to be tested, place the device on the soil to be tested; the base 1 is in close contact with the soil surface; the insertion and extraction mechanism drives the rotating shaft 10 to descend synchronously, thereby driving the electrode plate 11 to descend and insert into the soil; the insertion and extraction mechanism simultaneously drives the two sets of electrode plates 11 to be inserted into the soil to the same depth, thereby increasing the accuracy of the test results.

[0055] After the electrode plate 11 is inserted into the soil, the expansion mechanism drives the electrode plate 11 to rotate, thereby increasing the angle between the electrode plate 11 and the rotating shaft 10. During the rotation, the electrode plate 11 will squeeze the soil to deform the soil under force, thereby maximizing the contact area between the electrode plate 11 and the soil and avoiding poor contact between the electrode plate 11 and the soil due to gaps between the soil, thereby reducing detection errors.

[0056] As a further embodiment of this utility model, the insertion and removal mechanism includes an insertion and removal motor 5 mounted on the protective shell 2; a lead screw 6 rotatably connected to the base 1 is mounted on the output end of the insertion and removal motor 5; a lifting plate 7 is rotatably mounted on the rotating shaft 10; and an internally threaded sleeve 701 threadedly connected to the lead screw 6 is mounted on the lifting plate 7.

[0057] In this embodiment, the base 1 is placed on the soil to be tested, and the plug-in motor 5 is started, thereby driving the lead screw 6 to rotate. Through the threaded engagement, the internal threaded sleeve 701 is driven to move closer to the base 1, thereby driving the lifting plate 7 to descend and move closer to the base 1.

[0058] The electrode plate 11 is initially placed inside the protective shell 2, which can prevent the electrode plate 11 from being damaged due to accidental collision during the movement of the device;

[0059] As the lifting plate 7 descends, it drives the electrode plate 11 to move synchronously, so that the electrode plate 11 gradually extends out of the base 1 and gradually penetrates into the soil. The electrode plate 11 is driven into the soil by the threaded engagement, which can effectively reduce the difficulty of insertion and keep the insertion angle unchanged. Moreover, the two sets of electrode plates 11 are inserted into the soil at the same time and synchronously, and the same insertion depth can effectively reduce the detection error.

[0060] As a further embodiment of this utility model, the expansion mechanism includes an expansion motor 8 mounted on the lifting plate 7; the output end of the expansion motor 8 is fixedly connected to the rotating shaft 10; a connecting column 9 rotatably connected to the rotating shaft 10 is mounted on the lifting plate 7; a connecting plate 13 rotatably connected to the pole plate 11 is mounted on the connecting column 9; a guide rod 12 is mounted on the connecting plate 13; a threaded groove 1001 is provided on the rotating shaft 10; an internally threaded slider 14 threadedly connected to the threaded groove 1001 is slidably mounted on the guide rod 12; a sliding block 16 is slidably mounted on the guide rod 12; a hinge rod 19 rotatably connected to the pole plate 11 is rotatably mounted on the sliding block 16; a compression spring 15 is wrapped around the rotating shaft 10; the two ends of the compression spring 15 respectively abut against the internally threaded slider 14 and the sliding block 16.

[0061] In this embodiment, after the two sets of electrode plates 11 are inserted into the soil, the expansion motor 8 is started; the expansion motor 8 drives the rotating shaft 10 to rotate, thereby driving the threaded groove 1001 to rotate, and through the threaded engagement, the internal threaded slider 14 moves closer to the connecting plate 13.

[0062] As the internal threaded slider 14 approaches the connecting plate 13, it first drives the sliding block 16 to move synchronously through the compression spring 15, thereby driving the electrode plate 11 to rotate through the hinge rod 19, thus increasing the angle between the electrode plate 11 and the rotating shaft 10. As the clamping plate 11 rotates, the electrode plate 11 will compress the soil, causing it to deform under force, thereby increasing the contact area between the electrode plate 11 and the soil, avoiding gaps between the soil particles that reduce the contact rate between the soil and the electrode plate 11, and thus reducing detection errors.

[0063] When the soil deforms under stress, it increases the resistance to the rotation of the electrode plate 11. When the resistance is greater than the power of the electrode plate 11 to rotate, the electrode plate 11 will stop rotating. At this time, the sliding block 16 remains in the same position, while the internal thread slider 14 continues to move. At this time, the compression spring 15 will be compressed, and the distance between the internal thread slider 14 and the sliding block 16 will gradually decrease. The elastic force of the compression spring 15 can prevent the electrode plate 11 from resetting on its own, which would result in poor contact with the soil.

[0064] The connecting column 9 is connected to the lifting plate 7 and the connecting plate 13 by screws. By replacing the connecting column 9 with different lengths, data of soil at different depths can be detected. The setting of the compression spring 15 can effectively prevent the electrode plate 11 from being deformed due to excessive force, thereby improving the service life of the device and reducing the maintenance frequency.

[0065] As a further embodiment of this utility model, a fixing block 18 is installed on the guide rod 12; a return spring 17 is wrapped around the rotating shaft 10; the two ends of the return spring 17 respectively abut against the sliding block 16 and the fixing block 18.

[0066] In this embodiment, as the internal threaded slider 14 moves the sliding block 16, the distance between the sliding block 16 and the fixed block 18 gradually decreases, causing the return spring 17 to be compressed.

[0067] After the test is completed, the expansion motor 8 will drive the rotating shaft 10 to rotate so that the internal thread slider 14 is reset. During this process, the sliding block 16 moves away from the fixed block 18 under the elastic force of the reset spring 17 to complete the reset.

[0068] The reset spring 17 ensures that the electrode plate 11 is reset, preventing damage to the electrode plate during soil removal due to incomplete reset, thereby improving the service life of the device.

[0069] As a further embodiment of this utility model, a cone 20 rotatably connected to the rotating shaft 10 is installed on the end of the guide rod 12.

[0070] In this embodiment, the cone 20 can effectively reduce the resistance of the electrode plate 11 when it is inserted into the soil, improve the insertion efficiency, and prevent the electrode plate 11 from bending and deforming under stress.

[0071] As a further improvement of this utility model, multiple sets of anti-slip sleeves 301 for increasing the coefficient of friction are installed on the column 3.

[0072] In this embodiment, the anti-slip sleeve 301 can prevent the device from slipping during the movement of the device, which can effectively improve the movement efficiency and protect the device.

[0073] As a further improvement of this utility model, a counterweight platform 101 is installed on the base 1.

[0074] In this embodiment, by adding weights to the counterweight platform 101 to lower the center of gravity of the device, the device can be effectively prevented from tipping over, and the efficiency of inserting the electrode plate 11 into the soil can be improved by adding weights.

[0075] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. An intelligent in-situ electrical resistivity tomography device for contaminated soil, comprising a base (1); a protective shell (2) is installed on the base (1). Its features are, A column (3) is installed on the protective shell (2); a detector (4) for measuring the change in soil resistivity is installed on the column (3). Two sets of rotating shafts (10) are symmetrically arranged on the base (1); the rotating shafts (10) are equidistantly distributed in the circumferential direction and multiple sets of electrode plates (11) are rotatably installed. The base (1) is provided with an insertion and removal mechanism; the insertion and removal mechanism can drive the rotating shaft (10) to descend or rise, so as to drive the electrode plate (11) to be inserted into or pulled out of the soil to be tested; An expansion mechanism is provided on the base (1); the expansion mechanism drives the pole plate (11) to rotate, so as to increase or decrease the angle with the rotating shaft (10).

2. The intelligent in-situ electrical resistivity tomography device for contaminated soil according to claim 1, characterized in that, The insertion and removal mechanism includes an insertion and removal motor (5) mounted on the protective shell (2); a lead screw (6) rotatably connected to the base (1) is mounted on the output end of the insertion and removal motor (5); a lifting plate (7) is rotatably mounted on the rotating shaft (10); and an internal thread sleeve (701) threadedly connected to the lead screw (6) is mounted on the lifting plate (7).

3. The intelligent in-situ electrical resistivity tomography device for contaminated soil according to claim 2, characterized in that, The expansion mechanism includes an expansion motor (8) mounted on the lifting plate (7); the output end of the expansion motor (8) is fixedly connected to the rotating shaft (10); a connecting column (9) rotatably connected to the rotating shaft (10) is mounted on the lifting plate (7); a connecting plate (13) rotatably connected to the pole plate (11) is mounted on the connecting column (9); a guide rod (12) is mounted on the connecting plate (13); a threaded groove (1001) is provided on the rotating shaft (10); an internal threaded slider (14) threadedly connected to the threaded groove (1001) is slidably mounted on the guide rod (12); a sliding block (16) is slidably mounted on the guide rod (12); a hinge rod (19) rotatably connected to the pole plate (11) is rotatably mounted on the sliding block (16); a compression spring (15) is wrapped around the rotating shaft (10); the two ends of the compression spring (15) respectively abut against the internal threaded slider (14) and the sliding block (16).

4. The intelligent in-situ electrical resistivity tomography device for contaminated soil according to claim 3, characterized in that, A fixing block (18) is installed on the guide rod (12); a return spring (17) is wrapped around the rotating shaft (10); the two ends of the return spring (17) abut against the sliding block (16) and the fixing block (18) respectively.

5. The intelligent in-situ electrical resistivity tomography device for contaminated soil according to claim 4, characterized in that, A cone (20) rotatably connected to the rotating shaft (10) is installed at the end of the guide rod (12).

6. The intelligent in-situ electrical resistivity tomography device for contaminated soil according to claim 1, characterized in that, Multiple sets of anti-slip sleeves (301) for increasing the coefficient of friction are installed on the column (3).

7. The intelligent in-situ electrical resistivity tomography device for contaminated soil according to claim 1, characterized in that, A counterweight platform (101) is installed on the base (1).

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