Detection device for multiple new pollutants in soil

Abstract

The invention relates to the technical field of soil detection, in particular to a device for detecting multiple new pollutants in soil, which comprises a sampler, a soil preprocessor and a controller, wherein the soil preprocessor comprises a base, a screen hopper is arranged above the base, a screen mesh is fixedly connected in the screen hopper, the bottom of the screen hopper is communicated with a microwave digestion box, the bottom of the microwave digestion box is fixedly connected with the top of the base, and the side wall of the microwave digestion box is communicated with a discharging pipe; a sample separation assembly for separating a to-be-detected sample is arranged at a position, close to the microwave digestion box, of the top of the base; a plurality of first driving parts are fixedly connected to the top of the base, the first driving parts are electrically connected with the controller, and grinding assemblies used for grinding soil sampled by the sampler are arranged on output shafts of the driving parts. According to the invention, collection, primary treatment and sample separation of a soil sample can be directly completed in an automatic manner on a soil sampling site, so that the soil collection and detection efficiency is remarkably improved, and the accuracy and timeliness of a detection result are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of soil detection, and in particular to a device for detecting multiple new pollutants in soil. Background Art

[0002] With the rapid advancement of industrialization and urbanization, a large number of pollutants such as heavy metals, chemicals, and organic pollutants are discharged into the environment and then penetrate into the soil, causing soil pollution. These pollutants not only destroy the soil structure and reduce soil fertility, but may also enter the human body through the food chain, posing a threat to human health.

[0003] Existing soil pollutant detection devices usually use a sampler to take soil samples back to the laboratory for testing. During the sampling process of the sampler, the soil samples need to be pre-processed and sorted manually, which is time-consuming and labor-intensive.

[0004] In summary, how to solve the problem of manual pretreatment and sampling of soil samples during the sampling process of the sampler, which is time-consuming and labor-intensive, has become a difficult problem that needs to be urgently solved in this field. Therefore, it is necessary to propose a detection device for multiple new pollutants in soil. Summary of the invention

[0005] To solve the above problems, the present invention provides a detection device for multiple new pollutants in soil, which can work directly at the soil sampling site and complete the collection, preliminary processing and sample separation of soil samples in an automated manner, thereby significantly improving the soil collection and detection efficiency, reducing the complexity of operation, and ensuring the accuracy and timeliness of the detection results.

[0006] In order to achieve the above-mentioned object, the technical scheme of the present invention is as follows: a device for detecting multiple new pollutants in soil, comprising a sampler, a soil preprocessor and a controller;

[0007] The sampler comprises a base, on which a plurality of telescopic rods are fixedly connected, and the ends of the telescopic rods away from the base are fixedly connected to fixed blocks, and the tops of the fixed blocks are hinged with connecting rods; a plurality of sliding rods are fixedly connected to the top of the base, and the sliding rods are vertically slidably matched with sliders, and adjacent sliders are fixedly connected, and the sliders are hinged with the ends of the connecting rods away from the fixed blocks; a top plate is provided on the top of the sliding rod, and the top plate is fixedly connected to the ends of the sliding rods away from the base; the top plates are fixedly connected to the top plates, and adjacent top plates are fixedly connected; a hand push rod is provided under the top plate, and the hand push rods are vertically slidably matched with the sliding rods adjacent thereto; a sampling assembly for sampling soil is provided at the bottom of the hand push rod;

[0008] The soil preprocessor comprises a bottom plate, a sieve bucket is arranged above the bottom plate, a support is fixedly connected to the bottom of the sieve bucket, the bottom of the support is fixedly connected to the top of the bottom plate, a sieve is fixedly connected in the sieve bucket, a microwave digestion box is connected to the bottom of the sieve bucket, the bottom of the microwave digestion box is fixedly connected to the top of the bottom plate, and a discharge pipe is connected to the side wall of the microwave digestion box; a sampling assembly for sampling samples to be detected is arranged at the top of the bottom plate near the microwave digestion box; first driving members are symmetrically and fixedly connected to the top of the bottom plate, the first driving members are electrically connected to a controller, the controller is used to control the opening and closing of the first driving members, and a grinding assembly for grinding soil sampled by a sampler is arranged on the output shaft of the first driving member.

[0009] The technical principles of the above scheme are as follows:

[0010] When sampling is required, the sampler is unfolded by extending the telescopic rod, and the sampler is placed on the surface of the soil to be sampled. The operator presses the sampling component into the soil by a hand push rod to sample the soil. After sampling is completed, the sampler is retracted and the sample collected in the sampler is placed in a soil preprocessor. The soil preprocessor passes through a sieve in a sieve bucket. The sieve is used to preliminarily remove large particles of impurities in the soil, such as stones, plant roots, etc., to ensure smooth subsequent processing. At the same time, the grinding component grinds large pieces of soil into small particle samples, and the small soil particle samples then fall from the sieve bucket into a microwave digestion box for pre-digestion of the soil samples, so that the pollutants in the soil are dissolved in the digestion solution under the action of microwave digestion to form a liquid sample. Finally, the liquid sample of soil pollutants is quantitatively sampled through the sampling component.

[0011] The above scheme has the following beneficial effects:

[0012] 1. The present invention realizes on-site and automated soil pollutant detection by integrating sampling, preliminary processing and sample sorting functions. Compared with the traditional method that requires soil samples to be brought back to the laboratory for tedious pretreatment and sample sorting, the present invention significantly shortens the detection cycle and improves the detection efficiency. At the same time, on-site sampling reduces the pollution and errors that may be introduced during sample transportation and storage, ensuring the accuracy and timeliness of the test results.

[0013] 2. The soil preprocessor and sampler designed by the present invention can be applied to soil sampling and detection work under different environmental conditions. The sampling and preliminary processing work can be quickly completed by simply placing the device on the surface of the soil to be sampled.

[0014] 3. In the traditional soil pollutant detection process, manual pretreatment and sampling of soil samples are arduous and time-consuming, and require high technical skills of operators. The present invention greatly simplifies the operation process, reduces the complexity of operation, and reduces the labor intensity of operators through automated design.

[0015] Further, the sampling assembly includes a second driving member, the top of the second driving member is fixedly connected to the bottom of the hand push rod, and the bottom of the second driving member is fixedly connected to a plurality of supporting rods;

[0016] A flange coupling is provided at one end of the support rod away from the second driving member, and the other end of the support rod away from the second driving member is fixedly connected to the top of the flange coupling, and a sampling tube is fixedly connected to the bottom of the flange coupling, and the other end of the sampling tube away from the flange coupling penetrates the base and vertically slides with the base;

[0017] A rotating shaft is coaxially fixedly connected to the output shaft of the second driving member. The end of the rotating shaft away from the second driving member passes through the flange coupling and extends to the outside of the bottom of the sampling tube and rotates with the flange coupling. A spiral blade is sleeved on the outer side of the rotating shaft.

[0018] Beneficial effect: When sampling soil, the sampling tube is inserted into the soil by pressing the hand push rod, and at the same time, the second driving member drives the rotating shaft to rotate and then drives the spiral blade to rotate, so that the spiral blade can squeeze and push the soil upward, so that the soil sample can be lifted in the sampling tube. Every time the spiral blade rotates one circle, the soil sample will be lifted upward by a pitch, so that the sampling tube can realize the soil sampling function. At the same time, when the soil in the sampling tube needs to be released, it is only necessary to change the rotation direction of the spiral blade so that the soil sample in the sampling tube is squeezed and pushed downward, so that the soil sample is released from the bottom of the sampling tube.

[0019] Furthermore, the grinding assembly includes a roller and a plurality of screws, which are coaxially fixedly connected to the output shaft of the first driving member. The screws are threadedly fitted with nut seats, and the tops of the nut seats are fixedly connected to brackets. Both ends of the roller are rotatably connected to the brackets.

[0020] Beneficial effect: The first driving member rotates so that the nut seat can perform horizontal linear motion on the screw rod, thereby driving the roller to roll horizontally on the screen to grind the sampled soil sample.

[0021] Furthermore, the sampling assembly includes a sampling box, the bottom of the sampling box and the top of the base plate are fixedly connected, a third driving member is fixedly connected to the bottom wall of the sampling box, the third driving member is electrically connected to the controller, and the controller is used to control the opening and closing of the third driving member; a turntable is coaxially fixedly connected to the output shaft of the third driving member, a plurality of sampling cup grooves are opened on the top of the turntable along its circumference, and sampling cups are placed on the sampling cup grooves.

[0022] Beneficial effect: By controlling the output shaft of the third driving member to rotate, the turntable rotates. Whenever the sampling cup rotates to the position directly below the outlet pipe, the liquid sample in the microwave digestion chamber can flow into the sampling cup to realize the sampling processing of the liquid sample, realize automated pretreatment and sampling, and facilitate the subsequent detection of pollutants.

[0023] Furthermore, a liquid discharge pump is connected to the connection point between the discharge pipe and the microwave digestion box, the input end of the liquid discharge pump is connected to the microwave digestion box, the output end of the liquid discharge pump is connected to the discharge pipe, a port of the discharge pipe away from the liquid discharge pump is located directly above one of the sampling cups, the liquid discharge pump is electrically connected to the controller, and the controller is used to control the opening and closing of the liquid discharge pump.

[0024] Beneficial effect: By controlling the opening time of the liquid discharge pump, the function of quantitatively conveying the liquid sample to the sampling cup can be realized, and the function of quantitatively dividing the liquid sample can be realized.

[0025] Furthermore, a filter screen is fixedly connected to the input end of the liquid outlet pump.

[0026] Beneficial effect: The filter can prevent soil residues remaining in the microwave digestion box from clogging the liquid outlet pump.

[0027] Furthermore, proximity switch sensors are symmetrically and fixedly connected to the inner wall of the screen bucket, and the proximity switch sensors are electrically connected to the controller. The controller is used to receive the roller proximity signal sent by the proximity switch sensors.

[0028] Beneficial effect: When the drum moves in the sieve bucket close to the proximity switch sensor, the proximity switch sends a proximity signal to the controller, and the controller sends a control signal to control the first driving member to reverse to make the drum move in the opposite direction, thereby realizing the function of the drum rolling the soil sample back and forth in the sieve bucket.

[0029] Furthermore, a forward and reverse switch is fixedly connected to the top of the push rod, the forward and reverse switch is electrically connected to the second driving member, and the forward and reverse switch is used to control the forward and reverse rotation of the second driving member.

[0030] Beneficial effect: The user can realize the forward and reverse rotation of the second driving member through the forward and reverse switch, thereby realizing the function of the sampling tube to sample and release the soil sample.

[0031] Furthermore, a plurality of ground nails are fixedly connected to the bottom of the fixing block.

[0032] Beneficial effect: The ground spike can be inserted into the soil during sampling, making the sampler more stable during sampling.

[0033] Furthermore, transverse threaded holes are provided on the outer side walls of the sliding engagement points of the sliding block and the sliding rod, and hand-tightened bolts are threadedly engaged in the threaded holes.

[0034] Beneficial effect: After the sampler is fixed on the soil surface to be sampled, the hand-tightening bolt is twisted until it cannot be twisted anymore. The hand-tightening bolt can clamp the slide bar so that the slide bar cannot slide on the slide bar, further increasing the stability of the sampler during sampling.

[0035] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is an axonometric view of the sampler in the embodiment of the present invention.

[0037] Figure 2 It is a front cross-sectional view of the sampler in an embodiment of the present invention.

[0038] Figure 3 It is an axonometric diagram of the soil preprocessor in an embodiment of the present invention.

[0039] Figure 4 It is a front cross-sectional view of a soil preprocessor in an embodiment of the present invention.

[0040] The reference numerals in the drawings of the specification include: 1, base; 2, telescopic rod; 3, fixed block; 4, ground nail; 5, connecting rod; 6, sliding rod; 7, sliding block; 8, top plate; 9, push rod; 10, bottom plate; 11, sieve bucket; 12, support member; 13, sieve; 14, microwave digestion box; 15, discharge pipe; 16, first driving member; 17, second driving member; 18, support rod; 19, flange coupling; 20, sampling tube; 21, rotating shaft; 22, spiral blade; 23, screw; 24, roller; 25, nut seat; 26, bracket; 27, sample separation box; 28, third driving member; 29, turntable; 30, sampling cup; 31, liquid discharge pump; 32, proximity switch sensor; 33, forward and reverse switch; 34, hand-tightened bolt. DETAILED DESCRIPTION

[0041] The following is further described in detail through specific implementation methods:

[0042] Embodiment 1:

[0043] As attached Figure 1-Figure 4 Shown: A device for detecting multiple new pollutants in soil, including a sampler, a soil preprocessor and a controller.

[0044] The sampler includes a base 1, on the side wall of which a plurality of telescopic rods 2 are fixedly welded, and at the ends of the telescopic rods 2 away from the base 1, a fixed block 3 is fixedly welded, and at the tops of the fixed blocks 3, a connecting rod 5 is hinged; a plurality of sliding rods 6 are fixedly welded on the top of the base 1, and sliding blocks 7 are vertically slidably matched on the sliding rods 6, and adjacent sliding blocks 7 are integrally formed, and the sliding blocks 7 are hinged to the ends of the connecting rods 5 away from the fixed block 3; top plates 8 are fixedly welded on the tops of the sliding rods 6, and adjacent top plates 8 are integrally formed; a hand push rod 9 is provided under the top plate 8, and the hand push rod 9 is vertically slidably matched with the sliding rod 6 adjacent to it; a sampling assembly for sampling soil is provided at the bottom of the hand push rod 9.

[0045] The soil preprocessor includes a base plate 10, a sieve bucket 11 is arranged above the base plate 10, a support member 12 is fixedly welded to the bottom of the sieve bucket 11, the bottom of the support member 12 and the top of the base plate 10 are fixedly welded, a sieve 13 is fixedly connected in the sieve bucket 11, a microwave digestion box 14 is connected to the bottom of the sieve bucket 11, the bottom of the microwave digestion box 14 and the top of the base plate 10 are fixedly connected by bolts, and a discharge pipe 15 is connected to the side wall of the microwave digestion box 14; a sampling assembly for sampling a sample to be detected is arranged near the microwave digestion box 14 at the top of the base plate 10.

[0046] The top of the base plate 10 is symmetrically connected with a first driving member 16 fixed by bolts. The first driving member 16 is electrically connected to the controller. The controller is used to control the opening and closing of the first driving member 16. The output shaft of the first driving member 16 is provided with a grinding component for grinding the soil sampled by the sampler.

[0047] The sampling assembly includes a second driving member 17, the top of the second driving member 17 and the bottom of the hand push rod 9 are fixedly connected by bolts, and a plurality of support rods 18 are fixedly connected to the bottom of the second driving member 17 by bolts. A flange coupling 19 is provided at one end of the support rod 18 away from the second driving member 17, and one end of the support rod 18 away from the second driving member 17 is fixedly connected to the top of the flange coupling 19 by bolts. A sampling barrel 20 is integrally formed at the bottom of the flange coupling 19, and one end of the sampling barrel 20 away from the flange coupling 19 passes through the base 1 and vertically slides with the base 1; a rotating shaft 21 is coaxially fixedly welded on the output shaft of the second driving member 17, and one end of the rotating shaft 21 away from the second driving member 17 passes through the flange coupling 19 and extends to the outside of the bottom of the sampling barrel 20 and rotates with the flange coupling 19, and a spiral leaf 22 is sleeved on the outer side of the rotating shaft 21.

[0048] The grinding assembly includes a roller 24 and a plurality of screws 23. The screws 23 are coaxially fixed and welded to the output shaft of the first driving member 16. The screws 23 are threadedly fitted with nut seats 25. The tops of the nut seats 25 are integrally formed with brackets 26. Both ends of the roller 24 are rotatably connected to the brackets 26.

[0049] The sampling assembly includes a sampling box 27, the bottom of the sampling box 27 and the top of the base plate 10 are fixedly connected by bolts, the inner bottom wall of the sampling box 27 is fixedly connected with a third driving member 28 by bolts, the third driving member 28 is electrically connected to the controller, and the controller is used to control the opening and closing of the third driving member 28; a turntable 29 is coaxially fixedly welded on the output shaft of the third driving member 28, and a plurality of sampling cup grooves are opened on the top of the turntable 29 along its circumference, and sampling cups 30 are placed on the sampling cup grooves.

[0050] The connection point between the discharge pipe 15 and the microwave digestion box 14 is connected with a liquid discharge pump 31, the input end of the liquid discharge pump 31 is connected with the microwave digestion box 14, the output end of the liquid discharge pump 31 is connected with the discharge pipe 15, and the end of the discharge pipe 15 away from the liquid discharge pump 31 is located directly above one of the sampling cups 30; the liquid discharge pump 31 is electrically connected to a controller, and the controller is used to control the opening and closing of the liquid discharge pump 31, and a filter is fixedly connected inside the input end of the liquid discharge pump 31.

[0051] Proximity switch sensors 32 are symmetrically connected to the inner wall of the screen bucket 11 and fixedly connected by bolts. The proximity switch sensors 32 are electrically connected to the controller, and the controller is used to receive the proximity signal of the drum 24 sent by the proximity switch sensors 32.

[0052] A forward / reverse switch 33 is fixedly connected to the top of the push rod 9 by bolts. The forward / reverse switch 33 is electrically connected to the second driving member 17 . The forward / reverse switch 33 is used to control the forward / reverse rotation of the second driving member 17 .

[0053] The specific implementation process is as follows:

[0054] Select the soil area to be sampled, and place the base 1 of the sampler steadily on the ground; unfold the telescopic rod 2, slide the slider 7 on the slide rod 6, and after adjusting the position of the slider 7, ensure that the sampling tube 20 can contact the soil surface.

[0055] Prepare the sampling cup 30 and place it in the sampling cup slot of the sample separation box 27; when sampling soil, since the push rod 9 is vertically slidably matched with the adjacent sliding rod 6, the operator holds the push rod 9, and drives the second driving member 17 to be pressed down by pressing the push rod 9, and then drives the flange coupling 19, and the flange coupling 19 drives the sampling tube 20 and the spiral blade 22 to be pressed into the soil; at the same time, press the forward and reverse switch 33 to control the second driving member 17 to rotate forward at this time. In this embodiment, the second driving member 17 is the first A forward and reverse motor, since the rotating shaft 21 and the output shaft of the first forward and reverse motor are coaxially fixed and welded, the spiral blade 22 is sleeved on the rotating shaft 21. When the output shaft of the first forward and reverse motor rotates forward, the spiral blade 22 can start to rotate forward, so that the spiral blade 22 can squeeze and push the soil upward, thereby allowing the soil sample to be lifted in the sampling tube 20. Every time the spiral blade 22 rotates one circle, the soil sample will be lifted upward in the sampling tube 20 by a pitch distance, so that the sampling tube 20 can realize the soil sampling function.

[0056] After the forward and reverse motor rotates forward for 10 seconds, the operator releases the forward and reverse switch 33, so that the output shaft of the first forward and reverse motor stops rotating. The operator pulls the push rod 9 to extract the sampling tube 20, taking out the soil, retracts the telescopic rod 2 to the initial position, slides the slider 7 to the initial position, and retracts the sampler; then the bottom of the sampling tube 20 is placed on the sieve bucket 11. At this time, the operator presses the forward and reverse switch 33 to control the output shaft of the first forward and reverse motor to reverse. Due to the reverse effect of the spiral blade 22, the spiral blade 22 can transport the soil sample in the sampling tube 20 to the bottom of the sampling tube 20 and drop it into the sieve bucket 11, thereby completing the soil sampling operation.

[0057] When performing soil sample pretreatment and sample separation operations, the operator operates the controller to send a control signal to control the output shaft of the first drive member 16 to rotate forward. In this embodiment, the first drive member 16 is a second forward and reverse motor. Since the screw 23 is coaxially fixed and welded with the output shaft of the second forward and reverse motor, the output shaft of the second forward and reverse motor drives the screw 23 to rotate forward, so that the nut seat 25 can make horizontal linear motion on the screw 23. Since the bracket 26 is integrally formed with the top of the nut seat 25, both ends of the roller 24 are rotated with the bracket 26, and the bracket 26 drives the roller 24 to roll horizontally on the screen 13 to grind and grind the sampled soil sample; when the roller 24 moves in the screen bucket 11 to approach one of the switch sensors 32, the proximity switch sensor 32 sends a proximity signal to the controller, and the controller sends a control signal to control the output shaft of the second forward and reverse motor to reverse, so that the roller 24 moves in the opposite direction, so as to realize the function of the roller 24 rolling the soil sample back and forth in the screen bucket 11.

[0058] After the soil sample is rolled by the roller 24, it passes through the sieve 13 to remove large impurities in the soil, such as stones, plant roots, etc., and grind the large pieces of soil into small soil particle samples. The small soil particle samples then fall from the sieve bucket 11 into the microwave digestion box 14 for pre-digestion treatment of the soil sample.

[0059] When the soil small particle sample falls into the microwave digestion box 14, the pollutants in the soil can be dissolved in the digestion solution and microwaves in the microwave digestion box 14 to form a liquid sample. After 30 minutes of soil pollutant digestion operation, the controller sends a control signal to control the output shaft of the third driving member 28 in the sample separation box 27 to rotate. In this embodiment, the third driving member 28 is a stepper motor. The controller sets an interval of 5s to control the stepper motor to rotate 15°. Since the bottom of the turntable 29 is coaxially welded with the output shaft of the stepper motor, and the sampling cup 30 in one of the sampling cup slots on the turntable 29 is located directly below the discharge pipe 15, the controller sends a control signal to control the liquid discharge pump 31 to start the liquid sample in the microwave digestion box 14 through the discharge pipe 15. The liquid sample is pumped into the sampling cup 30. At this time, the controller controls the liquid discharge pump 31 to start for 3s and stop for 2s. After 3s, the controller sends a control signal to control the stepper motor output shaft to rotate another 15° so that the next sampling cup 30 on the turntable 29 is located directly under the discharge pipe 15. The controller sends a control signal at an interval of 2s to control the liquid discharge pump 31 to start injecting the liquid sample into the sampling cup 30. The above operations are repeated to realize the automatic sampling operation of the liquid sample. Compared with the traditional method that requires the soil sample to be brought back to the laboratory for tedious pretreatment and sampling process, the present invention significantly shortens the detection cycle and improves the detection efficiency. At the same time, on-site sampling reduces the pollution and errors that may be introduced during sample transportation and storage, thereby ensuring the accuracy and timeliness of the test results.

[0060] Embodiment 2:

[0061] As attached Figure 1 and Figure 2 As shown, the difference from the first embodiment is that a plurality of ground nails 4 are integrally formed at the bottom of the fixing block 33 .

[0062] The specific implementation process is as follows: the ground nail 4 can be inserted into the soil during sampling, so that the sampler is more stable during sampling.

[0063] Embodiment 3:

[0064] As attached Figure 2 As shown, the difference from Example 2 is that the outer wall of the sliding block 7 and the sliding rod 6 at the sliding fit is provided with a transverse threaded hole, and the threaded hole is threaded with a hand-tightened bolt 34.

[0065] The specific implementation process is as follows: after fixing the sampler on the soil surface to be sampled, by twisting the hand-tightening bolt 34 until it cannot be twisted, the hand-tightening bolt 34 can clamp the slide rod 6 so that the slider 7 cannot slide on the slide rod 6, further increasing the stability of the sampler during sampling.

[0066] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A device for detecting multiple new pollutants in soil, characterized in that: Includes sampler, soil pre-processor and controller; The sampler comprises a base (1), a plurality of telescopic rods (2) are fixedly connected to the base (1), one end of the telescopic rods (2) away from the base (1) is fixedly connected to a fixed block (3), and the top of the fixed block (3) is hinged with a connecting rod (5); A plurality of sliding rods (6) are fixedly connected to the top of the base (1); each sliding rod (6) is vertically slidably matched with a sliding block (7); adjacent sliding blocks (7) are fixedly connected; the sliding blocks (7) are hinged to one end of the connecting rod (5) away from the fixed block (3); each sliding rod (6) is fixedly connected to a top plate (8) at the top; adjacent top plates (8) are fixedly connected; a push rod (9) is provided below the top plate (8); the push rod (9) is vertically slidably matched with the adjacent sliding rod (6); a sampling assembly for sampling soil is provided at the bottom of the push rod (9); The soil preprocessor comprises a bottom plate (10), a sieve bucket (11) is arranged above the bottom plate (10), a support member (12) is fixedly connected to the bottom of the sieve bucket (11), and the bottom of the support member (12) is fixedly connected to the top of the bottom plate (10); a sieve mesh (13) is fixedly connected inside the sieve bucket (11); a microwave digestion box (14) is connected to the bottom of the sieve bucket (11), the bottom of the microwave digestion box (14) is fixedly connected to the top of the bottom plate (10), and a discharge pipe (15) is connected to the side wall of the microwave digestion box (14); A sampling assembly for sampling the sample to be tested is provided at the top of the bottom plate (10) near the microwave digestion box (14); A first driving member (16) is symmetrically and fixedly connected to the top of the bottom plate (10). The first driving member (16) is electrically connected to a controller. The controller is used to control the opening and closing of the first driving member (16). A grinding assembly for grinding soil sampled by the sampler is provided on the output shaft of the first driving member (16).

2. The device for detecting multiple new pollutants in soil according to claim 1, characterized in that: The sampling assembly comprises a second driving member (17), the top of the second driving member (17) is fixedly connected to the bottom of the hand push rod (9), and the bottom of the second driving member (17) is fixedly connected to a plurality of supporting rods (18); A flange coupling (19) is provided at one end of the support rod (18) away from the second driving member (17), and the end of the support rod (18) away from the second driving member (17) is fixedly connected to the top of the flange coupling (19); a sampling tube (20) is fixedly connected to the bottom of the flange coupling (19), and the end of the sampling tube (20) away from the flange coupling (19) penetrates the base (1) and is vertically slidably matched with the base (1); A rotating shaft (21) is coaxially fixedly connected to the output shaft of the second driving member (17). One end of the rotating shaft (21) away from the second driving member (17) passes through the flange coupling (19) and extends to the outside of the bottom of the sampling tube (20) and is rotatably matched with the flange coupling (19). A spiral blade (22) is sleeved on the outer side of the rotating shaft (21).

3. The device for detecting multiple new pollutants in soil according to claim 2, characterized in that: The grinding assembly comprises a roller (24) and a plurality of screw rods (23); the screw rods (23) are coaxially fixedly connected to the output shaft of the first driving member (16); a nut seat (25) is threadedly matched on the screw rods (23); a bracket (26) is fixedly connected to the top of the nut seat (25); and both ends of the roller (24) and the bracket (26) are rotatably connected.

4. The device for detecting multiple new pollutants in soil according to claim 3, characterized in that: The sample separation assembly comprises a sample separation box (27), the bottom of the sample separation box (27) is fixedly connected to the top of the bottom plate (10), a third driving member (28) is fixedly connected to the inner bottom wall of the sample separation box (27), the third driving member (28) is electrically connected to a controller, and the controller is used to control the opening and closing of the third driving member (28); A rotating disk (29) is coaxially fixedly connected to the output shaft of the third driving member (28). A plurality of sampling cup grooves are formed on the top of the rotating disk (29) along its circumference, and sampling cups (30) are placed on the sampling cup grooves.

5. The device for detecting multiple new pollutants in soil according to claim 4, characterized in that: A liquid discharge pump (31) is connected to the connection point between the discharge pipe (15) and the microwave digestion box (14); the input end of the liquid discharge pump (31) is connected to the microwave digestion box (14); the output end of the liquid discharge pump (31) is connected to the discharge pipe (15); and one end of the discharge pipe (15) away from the liquid discharge pump (31) is located directly above one of the sampling cups (30); the liquid discharge pump (31) is electrically connected to a controller, and the controller is used to control the opening and closing of the liquid discharge pump (31).

6. The device for detecting multiple new pollutants in soil according to claim 5, characterized in that: A filter screen is fixedly connected inside the input end of the liquid outlet pump (31).

7. The device for detecting multiple new pollutants in soil according to claim 6, characterized in that: Proximity switch sensors (32) are symmetrically and fixedly connected to the inner wall of the screen bucket (11), and the proximity switch sensors (32) are electrically connected to the controller, and the controller is used to receive the drum (24) proximity signal sent by the proximity switch sensors (32).

8. The device for detecting multiple new pollutants in soil according to claim 7, characterized in that: A forward and reverse switch (33) is fixedly connected to the top of the push rod (9); the forward and reverse switch (33) is electrically connected to the second drive member (17); and the forward and reverse switch (33) is used to control the forward and reverse rotation of the second drive member (17).

9. The device for detecting multiple new pollutants in soil according to claim 8, characterized in that: A plurality of ground nails (4) are fixedly connected to the bottom of the fixing block (3).

10. The device for detecting multiple new pollutants in soil according to claim 9, characterized in that: The outer side walls of the sliding block (7) and the sliding rod (6) are both provided with transverse threaded holes, and the threaded holes are both threadedly matched with hand-tightening bolts (34).

Images