Gas monitoring device for in-situ soil pollution detection

Abstract

The utility model relates to a gas monitoring device, in particular to a gas monitoring device for in-situ soil pollution detection, which comprises a base, a detection module is arranged on the base, and a gas collection cylinder is mounted on the detection module; a gas collection structure is arranged on the base; the gas collection structure comprises a piston; the piston can slide in the gas collection cylinder to be close to or away from the detection module so as to collect or discharge air; a lifting structure is arranged on the base and can drive the detection module to be far away from or close to the base so as to change the action position of the gas collection structure; the base is further provided with an intermittent driving structure used for driving the gas collecting structure and the lifting structure to act alternately. Air at different heights in the gas collection well is collected in a mode of gas collection-rising-gas collection-rising..., quality detection is performed on the air at different heights through the detection module, and an obtained result has higher research value, so that researchers are assisted in knowing the actual condition of soil, and more appropriate soil improvement measures are formulated.

Description

Technical Field

[0001] This utility model relates to a gas monitoring device, specifically a gas monitoring device for in-situ soil pollution detection. Background Technology

[0002] Soil pollution testing can promptly identify and monitor the types, concentrations, and distribution of pollutants in the soil, providing data support for developing pollution prevention and control measures and remediation plans. This helps protect the ecological environment from damage, maintain ecological balance, and prevent harmful substances from entering the human body through the food chain, thus safeguarding human health. Common testing methods include soil quality testing, soil organic matter testing, and soil gas quality testing, among others.

[0003] Detecting the quality of gases in the soil allows for the assessment of soil contamination and its severity; this is crucial for understanding the state of soil pollution. Furthermore, during soil remediation, soil gas detection can be used to monitor the effectiveness of remediation measures, ensuring that pollutants are effectively removed. Common gas detection devices include gas monitoring systems.

[0004] Common gas monitoring devices are typically installed fixedly in gas collection wells. By monitoring the air in these wells, the actual condition of the soil can be assessed. However, due to the complex composition of gases in the soil and the varying densities of different gases, stratification may occur over time after the gases permeate into the well (due to slow airflow within the well). When gases stratify, the structures obtained through common gas monitoring devices become inaccurate, affecting researchers' understanding of the actual soil conditions and thus reducing the efficiency of soil remediation. Utility Model Content

[0005] The purpose of this invention is to provide a gas monitoring device for in-situ soil pollution detection, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A gas monitoring device for in-situ soil pollution detection, including a base;

[0008] A guide rod is mounted on the base; a sliding sleeve is slidably mounted on the guide rod.

[0009] The base is provided with a detection module, and the detection module is equipped with a gas collecting cylinder that is fixedly connected to the sliding sleeve.

[0010] The base is provided with an air collection structure; the air collection structure includes a piston that is slidably and sealingly connected to the air collection cylinder; the piston can slide closer to or further away from the detection module in the air collection cylinder to collect or discharge air;

[0011] The base is provided with a lifting structure, which can move the detection module away from or closer to the base to change the position of the gas collection structure.

[0012] The base is also provided with an intermittent drive structure for driving the gas collection structure and the lifting structure to move alternately.

[0013] The gas monitoring device for in-situ soil pollution detection as described above: the lifting structure includes a lifting column installed on the detection module; the lifting column has a first spiral groove and a limiting column installed; a lifting gear is rotatably installed on the base; a first protruding column that slides and engages with the first spiral groove is installed on the lifting gear.

[0014] The gas monitoring device for in-situ soil pollution detection as described above includes: a gas collection structure further comprising a telescopic column mounted on the piston; a second spiral groove and a limiting groove that slides and engages with the limiting column on the telescopic column; a gas collection gear rotatably mounted on the detection module; and a second protruding column that engages with the second spiral groove on the gas collection gear.

[0015] The gas monitoring device for in-situ soil pollution detection as described above: the intermittent drive structure includes a motor mounted on the base; a rotating shaft that is rotatably mounted on the detection module and slidably fitted with the base; the rotating shaft is connected to the output end of the motor via a belt; a first half gear that meshes with the gas collecting gear and a second half gear that meshes with the lifting gear are mounted on the rotating shaft.

[0016] As described above, in the gas monitoring device for in-situ soil pollution detection: when the toothed portion of the first half gear meshes with the gas collecting gear, the toothed portion of the second half gear disengages from the lifting gear; and when the toothed portion of the first half gear disengages from the gas collecting gear, the toothed portion of the second half gear meshes with the lifting gear.

[0017] The gas monitoring device for in-situ soil pollution detection as described above: multiple sets of filter heads are installed on the gas collection cylinder; an exhaust port is installed at the bottom of the gas collection cylinder.

[0018] The gas monitoring device for in-situ soil pollution detection described above: the gas collection cylinder is made of corrosion-resistant PVC material.

[0019] Compared with the prior art, the beneficial effects of this utility model are: by driving the gas collection structure and the lifting structure to alternately move through the intermittent driving structure, the air at different heights in the gas collection well is collected in the manner of "gas collection-rising-gas collection-rising...", and the quality of the air at different heights is detected by the detection module. The results obtained are more valuable for research, thereby helping researchers to understand the actual soil conditions and formulate more suitable soil improvement measures. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a gas monitoring device for in-situ soil pollution detection.

[0021] Figure 2 This is a schematic diagram of the structure of a gas monitoring device for in-situ soil pollution detection, viewed from a cross-sectional perspective.

[0022] Figure 3 for Figure 2 A schematic diagram of the structure at point A in the middle.

[0023] Figure 4 This is a schematic diagram of the lifting structure in a gas monitoring device for in-situ soil pollution detection.

[0024] Figure 5 This is a schematic diagram of the gas collection structure in a gas monitoring device for in-situ soil pollution detection.

[0025] Figure 6 This is a schematic diagram of the piston structure in a gas monitoring device for in-situ soil pollution detection.

[0026] In the diagram: 1. Base; 101. Guide rod;

[0027] 2. Sliding sleeve;

[0028] 3. Air collection cylinder; 301. Filter head; 302. Exhaust port;

[0029] 4. Electric motor;

[0030] 5. Shaft; 501. First half gear; 502. Second half gear;

[0031] 6. Detection module;

[0032] 7. Lifting column; 701. First spiral groove; 702. Limiting column;

[0033] 8. Lifting gear; 801. First protruding column;

[0034] 9. Air collecting gear; 901. Second protruding post;

[0035] 10. Piston;

[0036] 11. Telescopic column; 1101. Second spiral groove; 1102. Limiting groove. Detailed Implementation

[0037] 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.

[0038] Please see Figures 1-6 As an embodiment of the present utility model, the gas monitoring device for in-situ soil pollution detection includes a base 1;

[0039] A guide rod 101 is mounted on the base 1; a sliding sleeve 2 is slidably mounted on the guide rod 101.

[0040] The base 1 is provided with a detection module 6, and the detection module 6 is equipped with a gas collecting cylinder 3 that is fixedly connected to the sliding sleeve 2;

[0041] The base 1 is provided with an air collection structure; the air collection structure includes a piston 10 that is slidably and sealingly connected to the air collection cylinder 3; the piston 10 can slide in the air collection cylinder 3 to approach or move away from the detection module 6 in order to collect or discharge air.

[0042] The base 1 is provided with a lifting structure, which can move the detection module 6 away from or closer to the base 1 to change the position of the gas collection structure.

[0043] The base 1 is also provided with an intermittent drive structure for driving the gas collection structure and the lifting structure to move alternately.

[0044] In this embodiment, the base 1 is fixedly connected to the bottom surface of the gas collecting well in advance to stabilize the device, prevent the device from being overturned due to interference, and reduce the risk of interference with the detection results.

[0045] The gas collection cylinder 3 is used to collect the gas from the soil collected in the gas collection well; while the detection module 6 can detect the air quality in the gas collection cylinder 3, thereby inferring the pollution status of the soil in the area.

[0046] After the device is installed, the intermittent drive structure drives the gas collection structure and the lifting structure to operate alternately. When the gas collection structure operates first, it drives the piston 10 to slide closer to the detection module 6 in the gas collection cylinder 3, so as to absorb the air in the gas collection well into the gas collection cylinder 3, so as to facilitate the detection by the detection module 6. During this process, the lifting structure does not operate, so as to keep the gas collection height of the gas collection cylinder 3 unchanged.

[0047] When piston 10 moves a certain distance, the intermittent drive structure will drive the lifting structure to move, thereby moving the detection module 6 away from the base 1, and thus moving the gas collecting cylinder 3 away from the base 1, thereby increasing the gas collecting height of the gas collecting cylinder 3, thereby expanding the gas collecting range and avoiding the gas used to judge air quality from accumulating in a certain area, which would cause the detection result to have a large error compared to the actual result.

[0048] By collecting air at different heights in the gas collection well through a "collecting-rising-collecting-rising..." method, and then using the detection module 6 to test the quality of the air at different heights, the results are more valuable for research. This helps researchers understand the actual soil conditions and develop more suitable soil improvement measures.

[0049] As a further embodiment of this utility model, the lifting structure includes a lifting column 7 installed on the detection module 6; the lifting column 7 has a first spiral groove 701 and a limiting column 702 installed on it; a lifting gear 8 is rotatably installed on the base 1; a first protruding column 801 that slides and engages with the first spiral groove 701 is installed on the lifting gear 8.

[0050] In this embodiment, when the lifting gear 8 rotates, it will drive the first protruding column 801 to rotate synchronously, thereby causing the first protruding column 801 to slide in the first spiral groove 701. Through the squeezing action of the first protruding column 801 on the first spiral groove 701, the lifting column 7 will rise, thereby driving the detection module 6 and the air collecting cylinder 3 to rise, thereby changing the air collecting height of the air collecting cylinder 3.

[0051] The intermittent drive structure drives the lifting gear 8 to rotate once, and the height of the gas collecting cylinder 3 changes once. Since the number of rotations of the lifting gear 8 is fixed, the sliding distance of the first protruding column 801 in the first spiral groove 701 is fixed, so that the height of the gas collecting cylinder 3 changes the same each time. According to the depth of the gas collecting well, the height of the gas collecting cylinder 3 rising once can be reasonably planned so that the gas collecting range covers the entire gas collecting well, thereby improving the accuracy of the detection results.

[0052] As a further embodiment of this utility model, the gas collecting structure also includes a telescopic column 11 installed on the piston 10; the telescopic column 11 is provided with a second spiral groove 1101 and a limiting groove 1102 that slides and engages with the limiting column 702; a gas collecting gear 9 is rotatably mounted on the detection module 6; a second protruding column 901 that engages with the second spiral groove 1101 is installed on the gas collecting gear 9.

[0053] In this embodiment, when the gas collecting gear 9 rotates, it drives the second protruding column 901 to rotate synchronously, thereby causing the second protruding column 901 to slide in the second spiral groove 1101. Through the squeezing action of the second protruding column 901 on the second spiral groove 1101, the telescopic column 11 is driven to slide inward in the lifting column 7, thereby causing the limiting column 702 to slide inward in the limiting groove 1102. The interaction between the limiting column 702 and the limiting groove 1102 can restrict the rotation of the telescopic column 11, preventing the telescopic column 11 from rotating with the second protruding column 901 and reducing the gas collecting efficiency.

[0054] When the telescopic column 11 moves, it will drive the piston 10 to move synchronously. The movement of the piston 10 will draw the air in the gas collection well into the gas collection cylinder 3.

[0055] The intermittent drive structure drives the gas collecting gear 9 to rotate once, and the piston 10 moves one distance, so that the gas collecting cylinder 3 collects a certain amount of air. Since the number of rotations of the gas collecting gear 9 is fixed, the sliding distance of the second protruding column 901 in the second spiral groove 1101 is fixed, and the distance that the piston 10 moves is fixed. This makes the amount of gas collected by the gas collecting cylinder 3 fixed each time, thereby further improving the accuracy of the detection results.

[0056] As a further embodiment of this utility model, the intermittent drive structure includes a motor 4 mounted on the base 1; a rotating shaft 5 rotatably mounted on the detection module 6 and slidably engaged with the base 1; the rotating shaft 5 and the output end of the motor 4 are connected by a belt; a first half gear 501 meshing with the air collecting gear 9 and a second half gear 502 meshing with the lifting gear 8 are mounted on the rotating shaft 5.

[0057] As a further embodiment of this utility model, when the toothed portion of the first half gear 501 meshes with the air collecting gear 9, the toothed portion of the second half gear 502 disengages from the lifting gear 8; and when the toothed portion of the first half gear 501 disengages from the air collecting gear 9, the toothed portion of the second half gear 502 meshes with the lifting gear 8.

[0058] In this embodiment, the motor 4 is controlled by a remote control system to drive the rotating shaft 5 to rotate, thereby driving the first half gear 501 and the second half gear 502 to rotate synchronously.

[0059] When the toothed part of the first half gear 501 meshes with the air collecting gear 9, the meshing action can drive the air collecting gear 9 to rotate, thereby driving the air collecting structure to move, and thus collecting part of the air through the air collecting cylinder 3.

[0060] When the toothed part of the second half gear 502 meshes with the lifting gear 8, the meshing action can drive the lifting gear 8 to rotate, thereby driving the lifting structure to move and thus changing the air collection height of the air collecting cylinder 3.

[0061] When the toothed part of the first half gear 501 meshes with the air collecting gear 9, the toothed part of the second half gear 502 disengages from the lifting gear 8; and when the toothed part of the first half gear 501 disengages from the air collecting gear 9, the toothed part of the second half gear 502 meshes with the lifting gear 8; thus, the air collecting height remains unchanged during the air collecting process; and after completing one air collecting action, the air collecting height is changed once.

[0062] By collecting air at different heights in the gas collection well through a "collecting-rising-collecting-rising..." method, and then using the detection module 6 to test the quality of the air at different heights, the results are more valuable for research. This helps researchers understand the actual soil conditions and develop more suitable soil improvement measures.

[0063] As a further embodiment of this utility model, the air collecting cylinder 3 is equipped with multiple sets of filter heads 301; and the bottom of the air collecting cylinder 3 is equipped with an exhaust port 302.

[0064] In this embodiment, the filter head 301 is used to filter moisture and dust mixed in the air in the gas collection well, so as to prevent the gas collection cylinder 3 from being contaminated and thus improve the service life of the device.

[0065] The exhaust port 302 is used to discharge the air collected in the air collection cylinder 3 after the test is completed, so as to avoid the air collection cylinder 3 being contaminated and thus interfering with the subsequent test results.

[0066] As a further improvement of this utility model, the gas collecting cylinder 3 is made of corrosion-resistant PVC material.

[0067] In this embodiment, the PVC gas collecting cylinder 3 can effectively improve the service life of the device and avoid frequent replacement of the gas collecting cylinder 3, which would increase the difficulty of use.

[0068] 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. A gas monitoring device for in-situ soil pollution detection, comprising a base (1); characterized in that A guide rod (101) is installed on the base (1); a sliding sleeve (2) is slidingly installed on the guide rod (101); A detection module (6) is arranged on the base (1), and a gas collecting cylinder (3) fixedly connected with the sliding sleeve (2) is installed on the detection module (6); A gas collecting structure is arranged on the base (1); the gas collecting structure comprises a piston (10) slidingly and sealingly connected with the gas collecting cylinder (3); the piston (10) can slide in the gas collecting cylinder (3) to approach or move away from the detection module (6) to collect or discharge air; A lifting structure is arranged on the base (1), which can drive the detection module (6) to move away from or approach the base (1) to change the action position of the gas collecting structure; The base (1) is further provided with an intermittent driving structure for driving the gas collecting structure and the lifting structure to act alternately.

2. The gas monitoring device for in-situ soil pollution detection according to claim 1, wherein The lifting structure comprises a lifting column (7) installed on the detection module (6); a first spiral groove (701) is formed in the lifting column (7), and a limiting column (702) is installed; a lifting gear (8) is rotatably installed on the base (1); a first protruding column (801) slidingly fitted with the first spiral groove (701) is installed on the lifting gear (8).

3. The gas monitoring device for in-situ soil pollution detection according to claim 2, wherein The gas collecting structure further comprises a telescopic column (11) installed on the piston (10); a second spiral groove (1101) is formed in the telescopic column (11), and a limiting groove (1102) slidingly fitted with the limiting column (702) is formed; a gas collecting gear (9) is rotatably installed on the detection module (6); a second protruding column (901) is installed on the gas collecting gear (9) and slidingly fitted with the second spiral groove (1101).

4. The gas monitoring device for in-situ soil pollution detection according to claim 3, wherein The intermittent driving structure comprises a motor (4) installed on the base (1); a rotating shaft (5) slidingly fitted with the base (1) is rotatably installed on the detection module (6); the rotating shaft (5) is connected with the output end of the motor (4) through a belt; a first half gear (501) engaged with the gas collecting gear (9) and a second half gear (502) engaged with the lifting gear (8) are installed on the rotating shaft (5).

5. The gas monitoring device for in-situ soil pollution detection according to claim 4, wherein When the toothed part of the first half gear (501) is engaged with the gas collecting gear (9), the toothed part of the second half gear (502) is disengaged from the lifting gear (8); and when the toothed part of the first half gear (501) is disengaged from the gas collecting gear (9), the toothed part of the second half gear (502) is engaged with the lifting gear (8).

6. The gas monitoring device for in-situ soil pollution detection according to claim 1, wherein A plurality of filter heads (301) are installed on the gas collecting cylinder (3); an air outlet (302) is installed at the bottom of the gas collecting cylinder (3).

7. The gas monitoring device for in-situ soil pollution detection according to claim 1, wherein The gas collecting cylinder (3) is made of corrosion-resistant PVC material.

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