Sampling detection device and method for analyzing volatile organic compounds in soil

Abstract

The invention discloses a sampling and detecting device and method for analyzing volatile organic compounds in soil, and belongs to the technical field of soil sampling and detecting equipment.The sampling and detecting device for analyzing the volatile organic compounds in the soil comprises a bottom plate, a sampling and detecting mechanism and two multi-stage hydraulic cylinders. The sampling detection mechanism comprises a mounting plate, a mounting frame, a sampling assembly, a driving assembly, four sample storage detection assemblies and a sample layout assembly. The sampling detection mechanism can automatically complete sampling and detection of soil, manual soil cutting and sampling are not needed, the sampling efficiency is greatly improved, sampling and detection are carried out at the same place, soil samples do not need to be transferred, loss or change of volatile organic compounds is avoided, and the accuracy of the detection result is improved. According to the sampling detection mechanism, by arranging the four sample storage detection assemblies, sampling, detection and sample storage can be conducted on different point positions of the same land, and the applicability and flexibility of the device are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of soil sampling and detection equipment, and in particular relates to a sampling and detection device and method for analyzing volatile organic matter in soil. Background Art

[0002] Soil pollutants can be roughly divided into two categories: inorganic pollutants and organic pollutants. Inorganic pollutants mainly include acids, alkalis, heavy metals, salts, compounds of radioactive elements cesium and strontium, compounds containing arsenic, selenium, and fluorine. Organic pollutants mainly include pesticides, phenols, cyanide, petroleum, synthetic detergents, and harmful microorganisms brought by urban sewage, sludge, and manure. In the field of environmental protection and ecological management, accurate analysis and detection of volatile organic compounds in soil is a key link in assessing the status of soil pollution and formulating effective management strategies.

[0003] Traditional soil testing methods rely on manual sampling and then sending the samples to the laboratory for chemical analysis. This process is not only time-consuming and laborious, but also the soil samples are easily affected by the external environment during storage and transportation, resulting in the loss or change of volatile organic compounds, which in turn affects the accuracy of the test results. Summary of the invention

[0004] The object of the present invention is to provide a sampling and detection device and method for analyzing volatile organic compounds in soil, which is used to solve the technical problem that the soil detection methods in the prior art mostly rely on manual sampling and then send the samples to the laboratory for chemical analysis, which is not only time-consuming and labor-intensive; but also the soil samples after sampling are easily affected by the external environment during storage and transportation, resulting in the loss or change of volatile organic compounds, thereby affecting the accuracy of the detection results.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A sampling and detection device for analyzing volatile organic compounds in soil comprises: a bottom plate, a circular groove is provided at the center thereof; a sampling and detection mechanism, located directly above the bottom plate, comprises: a mounting plate; a mounting frame, fixedly connected to the top surface of the mounting plate; a sampling assembly, rotatably mounted on the mounting plate, for drilling into the soil and conveying soil samples upward; a driving assembly, for driving the sampling assembly; four sample storage and detection assemblies, all slidably connected to the mounting plate, for detecting and storing soil samples; a sample discharge assembly, for discharging the soil samples conveyed by the sampling assembly into the sample storage and detection assembly; and two multi-stage hydraulic cylinders, mounted between the bottom plate and the mounting plate, for adjusting the height of the mounting plate.

[0007] Preferably, the sampling assembly includes: a hollow drill rod, which passes through the mounting plate and is rotatably connected to the mounting plate; a plurality of scrapers, all mounted on the lower end of the hollow drill rod; a plurality of through grooves, all opened at the lower end of the hollow drill rod; a driven gear, fixedly sleeved on the hollow drill rod; a sample row groove, opened on the side of the hollow drill rod; a first motor, mounted on the inner top surface of the mounting frame; a spiral conveying rod, rotatably connected to the hollow drill rod, and its upper end is fixedly connected to the power output shaft of the first motor.

[0008] Preferably, the driving assembly includes: a second motor mounted on the bottom surface of the mounting plate; and a driving gear mounted on a power output shaft of the second motor and meshingly connected with the driven gear.

[0009] Preferably, the sampling and detection mechanism also includes: four first slide grooves, all of which are opened on the top surface of the mounting plate; four second slide grooves, all of which are opened through the mounting plate; and four fixed tooth plates, all of which are installed on the top surface of the mounting frame and are respectively located directly above the four first slide grooves.

[0010] Preferably, the sample arrangement assembly comprises: a cylinder rotatably mounted on the hollow drill rod, the sample arrangement groove being located inside the cylinder; and a sample arrangement tube mounted on the side of the cylinder.

[0011] Preferably, the sample arrangement assembly also includes: a horizontal plate installed on the cylinder; a telescopic rod installed on the top surface of the horizontal plate; a limit tooth plate installed on the upper end of the telescopic rod; a spring, one end of which is fixedly connected to the horizontal plate and the other end of which is fixedly connected to the limit tooth plate; and two handles, both of which are installed on the limit tooth plate.

[0012] Preferably, the sample storage detection assembly includes: a box body, slidably connected to the first slide groove; an opening, which is provided on the top surface of the box body; and a detector, which is installed on the side surface of the box body, and the detection head of the detector extends into the box body.

[0013] Preferably, the sampling and detection device for analyzing volatile organic compounds in soil further includes: a plurality of steel nails, all installed on the bottom surface of the base plate; a push plate, installed on the side of the base plate; and two handles, both installed on the push plate.

[0014] Preferably, the sample storage detection component also includes: a plurality of through holes, all of which are opened on the top surface of the box body and are plugged into and matched with the steel nails; a moving wheel, which is installed on the bottom surface of the box body and is slidably connected to the second slide groove.

[0015] The method for using the sampling and detection device for analyzing volatile organic compounds in soil comprises the following steps: step 1, moving the device to a designated location where soil sampling is required, and then pressing the bottom plate downward to insert a plurality of steel nails installed on the bottom surface of the bottom plate into the ground; step 2, starting the second motor to drive the driving gear to rotate, and then meshing and driving the driven gear to rotate, so that the hollow drill rod starts to rotate; then starting two multi-stage hydraulic cylinders to gradually move the rotating hollow drill rod downward; step 3, as the hollow drill rod rotates and moves downward, the soil enters the hollow drill rod through the through groove; step 4, Fourth, start the first motor to drive the spiral conveying rod to rotate, and the rotating spiral conveying rod will transport the soil sample in the hollow drill rod upward; Step 5, the soil sample transported upward will enter the cylinder through the sample discharge groove, and the soil sample will be discharged through the sample discharge tube, and the discharged soil sample will fall into the box; Step 6, detect the soil sample in the box through the detector; Step 7, adjust the angle of the sample discharge tube so that the soil sample can accurately fall into the box of the designated sample storage detection component, and then move the entire device to the next designated location, and repeat the above steps to sample and detect different points on the same piece of land.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] 1. The sampling and detection mechanism of the present invention can automatically complete soil sampling and detection by setting a sampling component, a driving component, a sample storage and detection component and a sample arrangement component. There is no need for manual soil digging and sampling, which greatly improves the sampling efficiency. Sampling and detection are both carried out at the same location, and there is no need to transfer soil samples, which avoids the loss or change of volatile organic compounds and improves the accuracy of the detection results.

[0018] 2. The sampling and testing mechanism of the present invention can perform sampling, testing and sample storage at different points of the same land by setting four sample storage and testing components, thereby improving the applicability and flexibility of the device.

[0019] 3. The sampling and detection device for analyzing volatile organic compounds in soil of the present invention is provided with steel nails, a box body, moving wheels, through holes, a pusher and a handle. Under normal circumstances, the steel nails on the bottom surface of the bottom plate can fix the bottom plate on the ground, thereby improving the stability during the sampling process. When the device needs to be moved, the steel nails are plugged into the through holes on the box body, the four boxes are connected to the bottom plate, and then the moving wheels, the pusher plate and the handle are used to push the device to move, thereby enhancing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The present invention is a three-dimensional sampling and detection device for analyzing volatile organic compounds in soil Figure 1 ;

[0022] Figure 2 The present invention is a three-dimensional sampling and detection device for analyzing volatile organic compounds in soil Figure 2 ;

[0023] Figure 3 It is a three-dimensional diagram of the sampling and detection mechanism in the present invention;

[0024] Figure 4 It is a schematic diagram of the assembly structure of the hollow drill rod, the first motor and the sample arrangement assembly in the present invention;

[0025] Figure 5 For the present invention Figure 4 Exploded diagram of

[0026] Figure 6 It is a schematic diagram of the assembly structure of the mounting frame, the driving assembly, the sample storage detection assembly and the sample arrangement assembly in the present invention;

[0027] Figure 7 It is a schematic diagram of the assembly structure of the mounting plate, the driving assembly, the sample storage detection assembly and the sample arrangement assembly in the present invention;

[0028] Figure 8 A three-dimensional diagram of a sample storage detection assembly in the present invention;

[0029] Fig. 9 This is a schematic diagram of another state of the sampling and detection device for analyzing volatile organic compounds in soil of the present invention;

[0030] Reference numerals: 100, bottom plate; 101, steel nail; 102, push plate; 103, handle; 200, sampling and detection mechanism; 201, mounting plate; 202, mounting frame; 203, first slide groove; 204, second slide groove; 205, fixed tooth plate; 210, sampling assembly; 211, hollow drill rod; 212, scraper; 213, through groove; 214, driven gear; 215, sample row groove; 216, first motor; 217, spiral conveying rod; 220, driving assembly; 221, second motor; 222, driving gear; 230, sample storage detection assembly; 231, box; 232, opening; 233, detector; 234, detection head; 235, through hole; 236, moving wheel; 240, sample arrangement assembly; 241, cylinder; 242, sample arrangement tube; 243, cross plate; 244, telescopic rod; 245, limit tooth plate; 246, spring; 247, handle; 300, multi-stage hydraulic cylinder. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1: Figure 1 and Figure 2 As shown, the sampling and detection device for analyzing volatile organic compounds in soil includes: a base plate 100, a sampling and detection mechanism 200 and two multi-stage hydraulic cylinders 300.

[0033] A circular groove is formed in the center of the bottom plate 100 .

[0034] The sampling and detection mechanism 200 is located directly above the bottom plate 100 , and includes a mounting plate 201 , a mounting frame 202 , a sampling assembly 210 , a driving assembly 220 , four sample storage and detection assemblies 230 and a sample arrangement assembly 240 .

[0035] The mounting frame 202 is fixedly connected to the top surface of the mounting plate 201; the sampling assembly 210 is rotatably mounted on the mounting plate 201, and the sampling assembly 210 is used to drill into the soil and transport soil samples upward; the driving assembly 220 is used to drive the sampling assembly 210; the four sample storage detection assemblies 230 are all slidably connected to the mounting plate 201, the sample storage detection assembly 230 is used to detect and store soil samples, and the sample discharge assembly 240 is used to discharge the soil samples transported by the sampling assembly 210 into the sample storage detection assembly 230.

[0036] There are several benefits to preserving soil samples. First, preserved soil samples can be used for subsequent review and verification. Second, preserved soil samples can be used for more in-depth scientific research and analysis. For example, more detailed chemical, physical or biological properties of the samples can be studied to obtain more information about soil composition, structure or pollution status. Third, preserved soil samples can be used as historical data for comparison with future test results, which is beneficial for evaluating changing trends in soil quality and monitoring improvements or deterioration of environmental pollution. Fourth, preserving soil samples can ensure that evidence that meets the requirements can be provided when needed.

[0037] Two multi-stage hydraulic cylinders 300 are installed between the base plate 100 and the mounting plate 201 , and the two multi-stage hydraulic cylinders 300 are used to adjust the height of the mounting plate 201 .

[0038] Specifically, the device is moved to a designated location, and then the driving assembly 220 is started to drive the sampling assembly 210 to rotate, and then the two multi-stage hydraulic cylinders 300 are started to drive the mounting plate 201 to move downward, thereby driving the rotating sampling assembly 210 to move downward, and then the sampling assembly 210 drills into the soil and transports the soil sample upward. The soil sample transported upward will be guided by the sample arrangement assembly 240 and fall into the sample storage detection assembly 230, and finally the soil sample will be detected and stored by the sample storage detection assembly 230.

[0039] By providing four sample storage and detection components 230, the device can perform soil sampling, detection and sample storage at different points of the same land, thereby improving the applicability of the device.

[0040] like Figure 3-Figure 5 As shown, the sampling assembly 210 includes a hollow drill rod 211 , a plurality of scrapers 212 , a driven gear 214 , a sample row slot 215 , a first motor 216 and a screw conveying rod 217 .

[0041] The hollow drill rod 211 passes through the mounting plate 201 and is rotatably connected to the mounting plate 201, and the hollow drill rod 211 can pass through the circular groove; multiple scrapers 212 are installed at the lower end of the hollow drill rod 211; multiple through grooves 213 are opened at the lower end of the hollow drill rod 211; the driven gear 214 is fixedly sleeved on the hollow drill rod 211; the sample row groove 215 is opened on the side of the hollow drill rod 211; the first motor 216 is installed on the inner top surface of the mounting frame 202; the spiral conveying rod 217 is rotatably connected to the hollow drill rod 211, and the upper end of the spiral conveying rod 217 is fixedly connected to the power output shaft of the first motor 216.

[0042] Specifically, when the hollow drill rod 211 rotates and moves downward, it will drill into the soil, and the scraper 212 on the hollow drill rod 211 will allow the soil sample to enter the interior of the hollow drill rod 211 through the through groove 213; at this time, by starting the first motor 216, the spiral conveying rod 217 is driven to rotate, and the rotating spiral conveying rod 217 will transport the soil sample in the hollow drill rod 211 upward, and finally discharge the soil sample through the sample discharge groove 215.

[0043] like Figure 6 and Figure 7 As shown, the driving assembly 220 includes a second motor 221 and a driving gear 222. The second motor 221 is mounted on the bottom surface of the mounting plate 201; the driving gear 222 is mounted on the power output shaft of the second motor 221, and the driving gear 222 is meshed and connected with the driven gear 214.

[0044] Specifically, when the second motor 221 is running, it drives the driving gear 222 to rotate, and then meshes with and drives the driven gear 214 to rotate, and then drives the hollow drill rod 211 to rotate.

[0045] like Figure 7 As shown, the sampling and detection mechanism 200 further includes four first sliding grooves 203 , four second sliding grooves 204 and four fixed tooth plates 205 .

[0046] The four first slide grooves 203 are all opened on the top surface of the mounting plate 201; the four second slide grooves 204 are all opened through the mounting plate 201; the four fixed tooth plates 205 are all installed on the top surface of the mounting frame 202, and the four fixed tooth plates 205 are respectively located directly above the four first slide grooves 203.

[0047] like Figure 4 , Figure 5 and Figure 7 As shown, the sample arrangement assembly 240 includes a cylinder 241 , a sample arrangement tube 242 , a horizontal plate 243 , a telescopic rod 244 , a limiting tooth plate 245 , a spring 246 and two handles 247 .

[0048] The cylinder 241 is rotatably mounted on the hollow drill rod 211, and the sample row groove 215 is located in the cylinder 241; the sample row tube 242 is mounted on the side of the cylinder 241. The horizontal plate 243 is mounted on the cylinder 241; the telescopic rod 244 is mounted on the top surface of the horizontal plate 243; the limit tooth plate 245 is mounted on the upper end of the telescopic rod 244; one end of the spring 246 is fixedly connected to the horizontal plate 243, and the other end of the spring 246 is fixedly connected to the limit tooth plate 245; two handles 247 are both mounted on the limit tooth plate 245.

[0049] Specifically, the soil sample discharged through the sample discharge groove 215 will enter the cylinder 241 and then be discharged through the sample discharge tube 242 .

[0050] When the angle of the sample discharge tube 242 needs to be adjusted, the handle 247 is pulled downward to drive the limit tooth plate 245 to move downward, so that the limit tooth plate 245 is separated from the fixed tooth plate 205, and the cylinder 241 can be rotated, thereby facilitating the adjustment of the angle of the sample discharge tube 242, thereby facilitating the soil sample discharged from the sample discharge tube 242 to fall into the required sample storage detection component 230.

[0051] like Figure 8 As shown, the sample storage detection assembly 230 includes a box 231, an opening 232 and a detector 233. The box 231 is slidably connected to the first slide 203; the opening 232 is opened on the top surface of the box 231; the detector 233 is installed on the side of the box 231, and the detection head 234 of the detector 233 extends into the box 231. The detector 233 is a soil volatile organic compound detector. This product is an existing mature technology, and its specific principle will not be repeated here. For example, the KYS-6000 VOC produced by Qingdao Kaiyue Environmental Protection Equipment Co., Ltd. S Gas analyzer. The boxes 231 of the four sample storage and detection components 230 are all numbered.

[0052] Specifically, when the soil sample is discharged from the sample discharge tube 242 , the soil sample will pass through the opening 232 and fall into the box body 231 , and then the soil sample will be tested for volatile organic compounds through the detection head 234 of the detector 233 .

[0053] like Figure 2 As shown, the sampling and detection device for analyzing volatile organic compounds in soil also includes a plurality of steel nails 101 , and the plurality of steel nails 101 are all installed on the bottom surface of the base plate 100 .

[0054] Specifically, by providing the steel nails 101, the bottom plate 100 can be fixed on the ground, thereby facilitating improving the stability during the sampling process.

[0055] Working principle: When in use, the device is moved to a designated location, and then the bottom plate 100 is pressed downward to insert the steel nails 101 on the bottom plate 100 into the ground.

[0056] Then, by starting the second motor 221 , the driving gear 222 is driven to rotate, which in turn meshes with and drives the driven gear 214 to rotate, thereby driving the hollow drill rod 211 to rotate.

[0057] Then, by starting the two multi-stage hydraulic cylinders 300, the mounting plate 201 is driven to move downward, thereby driving the rotating hollow drill rod 211 to move downward, so that the hollow drill rod 211 is drilled into the soil, and the scraper 212 on the hollow drill rod 211 will allow the soil sample to enter the hollow drill rod 211 through the through groove 213. Then, by starting the first motor 216, the power output shaft of the first motor 216 drives the screw conveying rod 217 to rotate, and the rotating screw conveying rod 217 will convey the soil sample in the hollow drill rod 211 upward.

[0058] The soil sample transported upwards will enter the sample discharge pipe 242 through the discharge trough, and the soil sample in the sample discharge pipe 242 will pass through the opening 232 and fall into the box 231. Then, the detection head 234 of the detector 233 and the soil sample in the box 231 are detected.

[0059] When sampling and testing is required at different points of the same land, the handle 247 is pulled downward to drive the limit tooth plate 245 to move downward, so that the limit tooth plate 245 is separated from the fixed tooth plate 205, so that the cylinder 241 can be rotated, thereby facilitating the adjustment of the angle of the sample discharge tube 242, so that the soil sample discharged from the sample discharge tube 242 falls into other boxes 231. After the adjustment is completed, the handle 247 is released, and the rebound force of the spring 246 will push the limit tooth plate 245 to move upward, thereby causing the limit tooth plate 245 to engage with the fixed tooth plate 205, thereby fixing the angle of the discharge tube;

[0060] Then, the device is moved to a designated location, and the above operation is repeated to sample and test the soil at the designated location. By providing four sets of sample storage and testing components 230, the device can store four sets of soil samples at the same time, and has higher applicability.

[0061] Example 2: Figure 1 , Figure 2 and Fig. 9 As shown, when other parts are the same as those in Example 1, the difference between this embodiment and Example 1 is that:

[0062] The sampling and detection device for analyzing volatile organic compounds in soil further comprises a push plate 102 and two handles 103. The push plate 102 is mounted on the side of the bottom plate 100; and the two handles 103 are both mounted on the push plate 102.

[0063] like Figure 8 and Fig. 9 As shown, the sample storage detection assembly 230 also includes a plurality of through holes 235 and a moving wheel 236. The plurality of through holes 235 are all provided on the top surface of the box body 231, and the through holes 235 are plugged and matched with the steel nails 101; the moving wheel 236 is installed on the bottom surface of the box body 231, and the moving wheel 236 is slidably connected with the second slide groove 204.

[0064] Working principle: When the device needs to be moved during specific use, the four boxes 231 are moved out of the first slide groove 203 and the second slide groove 204 .

[0065] Then, four boxes 231 are placed under the base plate 100, and the steel nails 101 on the base plate 100 are inserted into the through holes 235 on the boxes 231. The function of the steel nails 101 at this time is to connect the base plate 100 and the boxes 231 together to prevent the boxes 231 from being separated from the base plate 100.

[0066] After the four boxes 231 are connected to the base plate 100, the base plate 100 and the steel nails 101 are not in contact with the ground, and the moving wheels 236 on the four boxes 231 are in contact with the ground. The moving wheels 236, the push plate 102 and the handle 103 are then used to push the device to move, which not only facilitates the transportation and transfer of the device, but also enhances the practicability of the device.

[0067] Example 3: Figure 1-Figure 8 As shown, the method for using the sampling and detection device for analyzing volatile organic compounds in soil comprises the following steps:

[0068] Step 1: Move the device to the designated location where soil sampling is required, and then press down the bottom plate 100 so that a plurality of steel nails 101 installed on the bottom surface of the bottom plate 100 are inserted into the ground to ensure stability during the sampling process;

[0069] Step 2: Start the second motor 221, so that the second motor 221 drives the driving gear 222 to rotate, and then meshes and drives the driven gear 214 to rotate, so that the hollow drill rod 211 starts to rotate; then start the two multi-stage hydraulic cylinders 300, adjust the height of the mounting plate 201, so that the rotating hollow drill rod 211 gradually moves downward, ready to drill into the soil;

[0070] Step 3: As the hollow drill rod 211 rotates and moves downward, the scraper 212 at the lower end of the hollow drill rod 211 pushes the soil into the hollow drill rod 211 through the through groove 213;

[0071] Step 4: Start the first motor 216, so that the first motor 216 drives the screw conveying rod 217 to rotate through the power output shaft, and the rotating screw conveying rod 217 conveys the soil sample in the hollow drill rod 211 upward;

[0072] Step 5: The soil sample transported upward will enter the cylinder 241 through the sample discharge groove 215 provided on the side of the hollow drill rod 211, and the soil sample will be discharged through the sample discharge pipe 242, and the discharged soil sample will fall into the box 231;

[0073] Step 6: The soil sample in the box 231 is tested by the detector 233. After the test is completed, the soil sample will continue to remain in the box 231 for subsequent analysis or processing;

[0074] Step seven: Pull the handle 247 on the sample arrangement assembly 240 to adjust the angle of the sample arrangement tube 242 so that the soil sample can accurately fall into the box 231 of the designated sample storage detection assembly 230; then release the handle 247, and the rebound force of the spring 246 pushes the limit tooth plate 245 back to its original position to fix the angle of the sample arrangement tube 242; then move the entire device to the next designated location, and repeat the above steps to sample and detect different points on the same piece of land.

[0075] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0076] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sampling and detection device for analyzing volatile organic compounds in soil, characterized in that: include: The bottom plate (100) has a circular groove at its center; The sampling and detection mechanism (200) is located directly above the bottom plate (100), and comprises: Mounting plate (201); A mounting frame (202) fixedly connected to the top surface of the mounting plate (201); A sampling assembly (210) is rotatably mounted on the mounting plate (201) and is used to drill into the soil and transport soil samples upwards; A driving component (220), used for driving the sampling component (210); Four sample storage and detection components (230), all slidably connected to the mounting plate (201), are used to detect and store soil samples; A sample discharge component (240) is used to discharge the soil sample transported by the sampling component (210) into the sample storage detection component (230); Two multi-stage hydraulic cylinders (300) are installed between the base plate (100) and the mounting plate (201) and are used to adjust the height of the mounting plate (201).

2. The sampling and detection device for analyzing volatile organic compounds in soil according to claim 1, characterized in that: The sampling assembly (210) comprises: A hollow drill rod (211) passes through the mounting plate (201) and is rotatably connected to the mounting plate (201); A plurality of scrapers (212) are mounted on the lower end of the hollow drill rod (211); A plurality of through grooves (213) are provided at the lower end of the hollow drill rod (211); A driven gear (214) fixedly sleeved on the hollow drill rod (211); A sample row groove (215) is provided on the side of the hollow drill rod (211); A first motor (216) mounted on the inner top surface of the mounting frame (202); The spiral conveying rod (217) is rotatably connected to the hollow drill rod (211), and the upper end of the spiral conveying rod (217) is fixedly connected to the power output shaft of the first motor (216).

3. The sampling and detection device for analyzing volatile organic compounds in soil according to claim 2, characterized in that: The driving assembly (220) comprises: A second motor (221) mounted on the bottom surface of the mounting plate (201); A driving gear (222) is mounted on the power output shaft of the second motor (221) and is meshedly connected with the driven gear (214).

4. The sampling and detection device for analyzing volatile organic compounds in soil according to claim 3, characterized in that: The sampling and testing mechanism (200) further comprises: Four first sliding grooves (203) are all arranged on the top surface of the mounting plate (201); Four second slide grooves (204) are all formed through the mounting plate (201); Four fixed tooth plates (205) are all mounted on the top surface of the mounting frame (202) and are respectively located directly above the four first sliding grooves (203).

5. The sampling and detection device for analyzing volatile organic compounds in soil according to claim 4, characterized in that: The arrangement component (240) comprises: A cylinder (241) is rotatably mounted on the hollow drill rod (211), and the sample row groove (215) is located inside the cylinder (241); The sample arrangement tube (242) is installed on the side of the cylinder (241).

6. The sampling and detection device for analyzing volatile organic compounds in soil according to claim 5, characterized in that: The arrangement component (240) further comprises: A horizontal plate (243) mounted on the cylinder (241); A telescopic rod (244) is mounted on the top surface of the horizontal plate (243); A limiting tooth plate (245) is installed on the upper end of the telescopic rod (244); A spring (246), one end of which is fixedly connected to the transverse plate (243), and the other end of which is fixedly connected to the limiting toothed plate (245); The two handles (247) are both mounted on the position-limiting tooth plate (245).

7. The sampling and detection device for analyzing volatile organic compounds in soil according to claim 6, characterized in that: The sample storage detection component (230) comprises: A box body (231) is slidably connected to the first slide groove (203); An opening (232) is provided on the top surface of the box body (231); The detector (233) is installed on the side of the box (231), and the detection head (234) of the detector (233) extends into the box (231).

8. The sampling and detection device for analyzing volatile organic compounds in soil according to claim 7, characterized in that: Also includes: A plurality of steel nails (101) are installed on the bottom surface of the bottom plate (100); A push plate (102) mounted on a side of the base plate (100); Two handles (103) are both mounted on the push plate (102).

9. The sampling and detection device for analyzing volatile organic compounds in soil according to claim 8, characterized in that: The sample storage detection component (230) further includes: A plurality of through holes (235) are provided on the top surface of the box body (231) and are plugged into and matched with the steel nails (101); The moving wheel (236) is installed on the bottom surface of the box body (231) and is slidably connected to the second sliding groove (204).

10. The method for using the sampling and detection device for analyzing volatile organic compounds in soil according to claim 8, characterized in that: The following steps are involved: Step 1: Move the device to a designated location where soil sampling is required, and then press the bottom plate (100) downward to allow a plurality of steel nails (101) installed on the bottom surface of the bottom plate (100) to be inserted into the ground; Step 2: Start the second motor (221) to drive the driving gear (222) to rotate, and then mesh and drive the driven gear (214) to rotate, so that the hollow drill rod (211) starts to rotate; then start the two multi-stage hydraulic cylinders (300) to make the rotating hollow drill rod (211) gradually move downward; Step 3: As the hollow drill rod (211) rotates and moves downward, the soil enters the hollow drill rod (211) through the through groove (213); Step 4: Start the first motor (216) to drive the screw conveying rod (217) to rotate, and the rotating screw conveying rod (217) conveys the soil sample in the hollow drill rod (211) upward; Step 5: The soil sample transported upwards will enter the cylinder (241) through the sample discharge groove (215), and the soil sample will be discharged through the sample discharge pipe (242), and the discharged soil sample will fall into the box (231); Step 6: Detecting the soil sample in the box (231) through the detector (233); Step 7: Adjust the angle of the sample tube (242) so that the soil sample can accurately fall into the box (231) of the designated sample storage and detection component (230), then move the entire device to the next designated location, and repeat the above steps to sample and detect different points on the same piece of land.

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