Polluted soil multi-point acquisition and detection device and detection method

Abstract

The invention relates to the technical field of soil detection, and discloses a contaminated soil multi-point acquisition and detection device which is characterized by comprising a moving trolley, a first mounting plate, a first motor, a first lead screw, a first guide column, a first connecting sleeve, a second connecting sleeve, a first rack and a spiral sleeve rod. The first connecting sleeve and the second connecting sleeve are vertically arranged at the bottom of the first mounting plate, after drilling of soil is completed, the second motor drives the pull rod to move upwards and then drives the connecting block to move upwards along the connecting column, so that the trigger plate is driven to move upwards, and then the trigger plate abuts against the bottom inclined face of the guide block, so that the push plate is driven to move towards the second feeding port close to the baffle ring; and in the moving process of the threaded rod, the guide rod drives the threaded rod to rotate, the material crushing rod crushes soil, and the material crushing rod can push broken stones to be away from the second feeding opening of the baffle ring.

Description

Technical Field

[0001] The present invention relates to the technical field of soil detection, and particularly relates to a multi-point sampling and detection device and method for contaminated soil. Background Art

[0002] Soil refers to a layer of loose material on the earth's surface, which is composed of various granular minerals, organic matter, moisture, air, microorganisms, etc., and can grow plants. Soil is composed of minerals weathered from rocks, animals and plants, organic matter produced by the decomposition of microbial residues, soil organisms, as well as moisture, air, oxidized humus, etc. Existing soil sampling and detection devices cannot simultaneously detect contaminated soil at different height positions of the same sampling point, and the detection results are inaccurate. When the soil quality of the area to be sampled is hard, it is not convenient to collect samples, thereby reducing the detection efficiency. Therefore, a multi-point sampling and detection device for contaminated soil is needed. Summary of the Invention

[0003] In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a multi-point sampling and detection device and method for contaminated soil.

[0004] To achieve the above technical purpose, the technical solutions adopted by the present invention are as follows.

[0005] A multi-point sampling and detection device for contaminated soil, which includes:

[0006] A mobile trolley, a first mounting plate, a first motor, a first lead screw, a first guide post, a first connecting sleeve, a second connecting sleeve, a first rack, and a spiral sleeve rod. The first mounting plate is above the mobile trolley and is horizontally arranged. The first connecting sleeve and the second connecting sleeve are vertically arranged at the bottom of the first mounting plate. The first motor is installed on the mobile trolley, and the output shaft of the first motor is vertically upward. One end of the first lead screw is coaxially and fixedly connected to the output shaft end of the first motor, and the other end extends into the first connecting sleeve. The first guide post is parallel to the first lead screw and is sleeved in the second connecting sleeve. The spiral sleeve rod is rotatably sleeved on the first mounting plate, and the bottom of the spiral sleeve rod passes through the plate surface of the mobile trolley. The first rack is vertically and fixedly arranged on the plate surface of the mobile trolley, and a transmission component is arranged on the plate surface of the first mounting plate;

[0007] The transmission component includes a support plate, a rotating shaft, a first gear, a first bevel gear, a first connecting shaft, a second bevel gear, a second gear, and a toothed ring. The support plate is fixed on the plate surface of the first mounting plate. The rotating shaft is rotatably installed on the support plate and is horizontally arranged. The first gear and the first bevel gear are respectively sleeved at the ends of the rotating shaft. The first connecting shaft is vertically and rotatably arranged on the first mounting plate. The second bevel gear and the second gear are respectively coaxially and fixedly sleeved at the ends of the first connecting shaft. The second bevel gear meshes with the first bevel gear. The toothed ring is coaxially and fixedly sleeved at the top of the spiral sleeve rod. The first gear meshes with the first rack, and the toothed ring meshes with the second gear.

[0008] As a further improvement of the present technical solution, a first feed inlet is provided in the wall of the spiral sleeve rod. The first feed inlet is close to the bottom of the spiral sleeve rod. A chromatograph is arranged inside the spiral sleeve rod. A display screen for displaying the detection results of the chromatograph is arranged on the moving trolley. The chromatograph is located below the first feed inlet of the spiral sleeve rod. A discharge pipe is connected to the bottom of the chromatograph. A bearing plate is horizontally arranged at the top of the chromatograph. A feed hole is provided at the center of the bearing plate. The discharge port of the discharge pipe passes through the wall of the spiral sleeve rod. A retaining ring is fitted inside the spiral sleeve rod. The retaining ring is located on the top of the bearing plate and seals the first feed inlet. A second feed inlet is provided in the wall of the retaining ring. The second feed inlet coincides with the first feed inlet. A material crushing assembly is arranged inside the retaining ring. A lifting mechanism for lifting the retaining ring is arranged at the top of the spiral sleeve rod.

[0009] As a further improvement of the present technical solution, the lifting mechanism includes a mounting frame, a second motor, a second lead screw, a second guide post, a lifting block, and a pull rod. The mounting frame is fixedly arranged at the top of the spiral sleeve rod. The second motor is installed on the top of the mounting frame. The output shaft of the second motor is vertically downward. One end of the second lead screw is coaxially and fixedly connected to the output shaft end of the second motor, and the other end is rotatably connected to the top of the spiral sleeve rod. The second guide post is arranged parallel to one side of the second lead screw. The lifting block is sleeved on the second lead screw and the second guide post. The pull rod is fixedly connected to the bottom of the lifting block. The pull rod extends into the spiral sleeve rod. Two connecting columns are vertically and fixedly connected to the top of the retaining ring and are arranged in parallel. An external step is provided at the top of the connecting column. A connecting block is sleeved on the connecting column. The connecting block is fixedly connected to the bottom of the pull rod. A knocking mechanism is arranged inside the spiral sleeve rod.

[0010] As a further improvement of the present technical solution, the knocking mechanism includes a third mounting plate, a third gear, a turntable, a convex block, a knocking plate, a fourth guide post, and a knocking head. The third mounting plate is fixed to the inner wall of the spiral sleeve rod. The third gear and the turntable are rotatably installed on the surface of the third mounting plate. The fourth guide post is horizontally and fixedly connected to the inner wall of the spiral sleeve rod. Two fourth guide posts are arranged in parallel. An external step is provided at the end of the fourth guide post. The knocking plate is sleeved on the fourth guide post. The knocking head is vertically arranged on the surface of the knocking plate. The end of the knocking head is close to the inner wall of the spiral sleeve rod. The convex block is fixedly arranged on the circumference of the turntable. A plurality of convex blocks are provided and evenly surround the circumference of the turntable. The knocking plate is in contact with the circumferential surface of the turntable. A first spring is sleeved on the fourth guide post. One end of the first spring is in contact with the knocking plate, and the other end is in contact with the inner wall of the spiral sleeve rod. A second rack is fixedly arranged on the pull rod. The second rack meshes with the third gear.

[0011] As a further improvement of the present technical solution, the crushing component includes a push plate, a threaded rod, a guide post III, a connecting sleeve II, a guiding block, a support plate, and a guiding rod. The push plate is vertically arranged within the retaining ring, opposite to the second feeding port of the retaining ring. The guide post III is vertically fixed on the plate surface of the push plate. There are two guide post IIIs arranged in parallel. One end of the connecting sleeve II is fixedly connected to the inner wall of the retaining ring, and the other end is sleeved on the guide post III. A second spring is sleeved on the guide post III and the connecting sleeve II. One end of the threaded rod is rotatably connected to the plate surface of the push plate, and the other end extends into the second feeding port of the retaining ring. The support plate is horizontally fixed at the inner wall of the retaining ring. The guiding rod is vertically fixed at the bottom of the support plate. The guiding block is fixed on the plate surface of the push plate. The upper and lower surfaces of the guiding block are inclined. The bottom end of the guiding rod is located within the spiral groove of the threaded rod. A trigger plate is fixedly connected to the bottom of the connecting block. The trigger plate is horizontally arranged. In the initial state, the trigger plate is at the bottom of the guiding block and in contact with the bottom inclined surface of the guiding block. A crushing rod is fixedly arranged at the end of the threaded rod. There are multiple crushing rods arranged at uniform intervals. The crushing rods are conical.

[0012] As a further improvement of the present technical solution, a discharging component is arranged within the discharging pipe. The discharging component includes an installation housing, a connecting shaft II, a bevel gear III, a bevel gear IV, and a spiral rod. The installation housing is arranged within the discharging pipe. The connecting shaft II is rotatably arranged within the discharging pipe. The connecting shaft II passes through the installation housing. The bevel gear III is coaxially fixed on the connecting shaft II. The spiral rod is rotatably installed on the installation housing. The central axis of the spiral rod extends into the installation housing. The bevel gear IV is coaxially fixedly sleeved at the end of the spiral rod. The bevel gear IV meshes with the bevel gear III. Tooth blocks II are arranged on the circumferential surface at the end of the connecting shaft II. There are multiple tooth blocks II evenly surrounding the circumferential surface at the end of the connecting shaft II. A connecting plate is vertically arranged at the bottom of the retaining ring. The connecting plate vertically extends downward through the plate surface of the bearing plate, close to the end of the connecting shaft II. An installation plate II is arranged on the plate surface of the connecting plate, close to the bottom of the connecting plate. The installation plate II is elastically connected to the plate surface of the connecting plate. Tooth blocks I are arranged on the plate surface of the installation plate II. There are multiple tooth blocks I evenly arranged up and down. The bottom inclined surface of the tooth block I is inclined. The tooth block I meshes with the tooth block II.

[0013] Compared with the prior art, the progress and advantages of the present invention are as follows: During the use of the present invention, when the motor I drives the installation plate I to move downward, it drives the spiral sleeve rod to rotate, thereby drilling the soil. It can strike the inner wall, which is beneficial to the rotation of the spiral sleeve rod. After the drilling of the soil is completed, the motor II drives the pull rod to move upward, enabling the end of the threaded rod to extend out of the second feeding port of the retaining ring. During the movement of the threaded rod, the guiding rod drives the threaded rod to rotate, and the crushing rod crushes the soil. If there are gravel blocks in the soil near the second feeding port, during the movement of the threaded rod towards the second feeding port of the retaining ring, the crushing rod can push the gravel blocks away from the second feeding port of the retaining ring.

[0014] Next, the second motor continues to drive the pull rod upward. The connecting block abuts against the external step at the top of the connecting column. The pull rod can pull the retaining ring upward, so that the feeding port one on the wall of the spiral sleeve rod is opened. The crushed soil can enter onto the bearing plate through the feeding port one, and then fall into the chromatograph through the feeding hole for detection;

[0015] When the connecting column pulls the retaining ring upward, it drives the connecting plate upward, then drives the second connecting shaft to rotate, and then drives the screw rod to rotate, so that the detected soil in the discharge pipe can be discharged through the discharge port of the discharge pipe, so as to detect the soil at different depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the installation of the spiral sleeve rod of the present invention.

[0019] Figure 3 It is a schematic diagram of the lifting mechanism of the present invention.

[0020] Figure 4 It is a schematic diagram of the installation of the retaining ring of the present invention.

[0021] Figure 5 It is a schematic diagram of the knocking mechanism of the present invention.

[0022] Figure 6 It is a schematic diagram of the installation of the crushing component of the present invention.

[0023] Figure 7 It is a schematic diagram of the cooperation between the connecting block and the crushing component of the present invention.

[0024] Figure 8 It is a schematic diagram of the installation of the threaded rod of the present invention.

[0025] Figure 9 It is a schematic diagram of the installation of the push plate of the present invention.

[0026] Figure 10 It is a schematic diagram of the installation of the screw rod of the present invention.

[0027] Figure 11 It is a schematic diagram of the cooperation between the first tooth block and the second tooth block of the present invention.

[0028] The labels in the figure are:

[0029] 10. Mobile trolley; 110. First mounting plate; 120. First motor; 130. First lead screw; 140. First guide post; 150. First connecting sleeve; 160. Second connecting sleeve; 170. First rack; 180. Spiral sleeve rod; 181. First feed inlet; 190. Transmission assembly; 191. Support plate; 192. Rotating shaft; 193. First gear; 194. First bevel gear; 195. First connecting shaft; 196. Second bevel gear; 197. Second gear; 198. Tooth ring;

[0030] 20. Lifting mechanism; 210. Mounting frame; 220. Second motor; 230. Second lead screw; 240. Second guide post; 250. Lifting block; 260. Pull rod; 261. Second rack; 262. Connecting block; 263. Trigger plate;

[0031] 30. Retaining ring; 310. Connecting column; 320. Second feed inlet; 330. Fragmentation assembly; 331. Pushing plate; 332. Threaded rod; 333. Third guide post; 334. Second connecting sleeve; 335. Guide block; 336. Support plate; 337. Guide rod; 338. Fragmentation rod; 340. Connecting plate; 341. Second mounting plate; 342. First tooth block;

[0032] 40. Chromatograph; 410. Discharge pipe; 411. Mounting housing; 412. Second connecting shaft; 413. Second tooth block; 414. Third bevel gear; 415. Fourth bevel gear; 416. Screw rod; 420. Bearing plate; 421. Feed hole;

[0033] 50. Knocking mechanism; 510. Third mounting plate; 520. Third gear; 530. Turntable; 540. Protrusion; 550. Knocking plate; 560. Fourth guide post; 570. Knocking head. Detailed implementation mode

[0034] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation modes.

[0035] Among them, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and cannot be understood as a limitation to the present invention; in order to better illustrate the embodiments of the present invention, some components in the accompanying drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0036] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be construed as a limitation on the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, if terms such as "connection" are used to indicate the connection relationship between components, this term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] As Figures 1-11 shown, a multi-point soil pollution collection and detection device includes:

[0039] A mobile trolley 10, a first mounting plate 110, a first motor 120, a first lead screw 130, a first guide post 140, a first connecting sleeve 150, a second connecting sleeve 160, a first rack 170, and a spiral sleeve rod 180. The first mounting plate 110 is located above the mobile trolley 10 and is horizontally arranged. The first connecting sleeve 150 and the second connecting sleeve 160 are vertically arranged at the bottom of the first mounting plate 110. The first motor 120 is installed on the mobile trolley 10, and the output shaft of the first motor 120 is vertically upward. One end of the first lead screw 130 is coaxially and fixedly connected to the output shaft end of the first motor 120, and the other end extends into the first connecting sleeve 150. The first guide post 140 is parallel to the first lead screw 130 and is sleeved in the second connecting sleeve 160. The spiral sleeve rod 180 is rotatably sleeved on the first mounting plate 110, and the bottom of the spiral sleeve rod 180 passes through the plate surface of the mobile trolley 10. The first rack 170 is vertically and fixedly arranged on the plate surface of the mobile trolley 10, and a transmission assembly 190 is arranged on the plate surface of the first mounting plate 110;

[0040] The transmission assembly 190 includes a support plate 191, a rotating shaft 192, a first gear 193, a first bevel gear 194, a first connecting shaft 195, a second bevel gear 196, a second gear 197, and a toothed ring 198. The support plate 191 is fixed to the surface of the first mounting plate 110. The rotating shaft 192 is rotatably mounted on the support plate 191 and is horizontally arranged. The first gear 193 and the first bevel gear 194 are respectively sleeved on the ends of the rotating shaft 192. The first connecting shaft 195 is vertically and rotatably arranged on the first mounting plate 110. The second bevel gear 196 and the second gear 197 are respectively coaxially and fixedly sleeved on the ends of the first connecting shaft 195. The second bevel gear 196 meshes with the first bevel gear 194. The toothed ring 198 is coaxially and fixedly sleeved on the top end of the screw sleeve rod 180. The first gear 193 meshes with the first rack 170. The toothed ring 198 meshes with the second gear 197. During the process of the first motor 120 driving the first mounting plate 110 to move downward, the first rack 170 drives the first gear 193 to rotate, thereby driving the rotating shaft 192 and the first connecting shaft 195 to rotate, and then driving the screw sleeve rod 180 to rotate, so as to drill the soil.

[0041] As Figures 3-9 shown, a first feed port 181 is formed in the wall of the screw sleeve rod 180. The first feed port 181 is close to the bottom of the screw sleeve rod 180. A chromatograph 40 is arranged in the screw sleeve rod 180. A display screen for displaying the detection results of the chromatograph 40 is arranged on the moving trolley 10. The chromatograph 40 is located below the first feed port 181 of the screw sleeve rod 180. A discharge pipe 410 is connected to the bottom of the chromatograph 40. A bearing plate 420 is horizontally arranged at the top of the chromatograph 40. A feed hole 421 is formed at the center of the bearing plate 420. The discharge port of the discharge pipe 410 passes through the wall of the screw sleeve rod 180. A retaining ring 30 is fitted in the screw sleeve rod 180. The retaining ring 30 is located above the bearing plate 420 and blocks the first feed port 181. A second feed port 320 is formed in the wall of the retaining ring 30. The second feed port 320 coincides with the first feed port 181. A crushing component 330 is arranged in the retaining ring 30. A lifting mechanism 20 for lifting the retaining ring 30 is arranged at the top of the screw sleeve rod 180.

[0042] More specifically, the lifting mechanism 20 includes a mounting bracket 210, a second motor 220, a second lead screw 230, a second guide post 240, a lifting block 250, and a pull rod 260. The mounting bracket 210 is fixedly arranged at the top of the screw sleeve rod 180. The second motor 220 is mounted on the top of the mounting bracket 210. The output shaft of the second motor 220 is vertically downward. One end of the second lead screw 230 is coaxially and fixedly connected to the output shaft end of the second motor 220, and the other end is rotatably connected to the top of the screw sleeve rod 180. The second guide post 240 is arranged in parallel on one side of the second lead screw 230. The lifting block 250 is sleeved on the second lead screw 230 and the second guide post 240. The pull rod 260 is fixedly connected to the bottom of the lifting block 250. The pull rod 260 extends into the screw sleeve rod 180. The top of the retaining ring 30 is vertically and fixedly connected with a connecting column 310. There are two connecting columns 310 and they are arranged in parallel. The top of the connecting column 310 is provided with an external step. A connecting block 262 is sleeved on the connecting column 310. The connecting block 262 is fixedly connected to the bottom of the pull rod 260. A knocking mechanism 50 is arranged in the screw sleeve rod 180.

[0043] More specifically, the knocking mechanism 50 includes a third mounting plate 510, a third gear 520, a turntable 530, a convex block 540, a knocking plate 550, a fourth guide post 560, and a knocking head 570. The third mounting plate 510 is fixed to the inner wall of the screw sleeve rod 180. The third gear 520 and the turntable 530 are rotatably mounted on the surface of the third mounting plate 510. The fourth guide post 560 is horizontally and fixedly connected to the inner wall of the screw sleeve rod 180. There are two fourth guide posts 560 and they are arranged in parallel. The end of the fourth guide post 560 is provided with an external step. The knocking plate 550 is sleeved on the fourth guide post 560. The knocking head 570 is vertically arranged on the surface of the knocking plate 550. The end of the knocking head 570 is close to the inner wall of the screw sleeve rod 180. The convex block 540 is fixedly arranged on the circumference of the turntable 530. There are multiple convex blocks 540 and they are evenly arranged around the circumference of the turntable 530. The knocking plate 550 is in contact with the circumferential surface of the turntable 530. A first spring is sleeved on the fourth guide post 560. One end of the first spring is in contact with the knocking plate 550, and the other end is in contact with the inner wall of the screw sleeve rod 180. A second rack 261 is fixedly arranged on the pull rod 260. The second rack 261 meshes with the third gear 520. The second motor 220 drives the lifting block 250 to move upward, thereby driving the pull rod 260 to move upward. Then the second rack 261 drives the third gear 520 and the turntable 530 to rotate, so that the convex block 540 abuts against the knocking plate 550, so that the knocking head 570 knocks on the inner wall of the screw sleeve rod 180, which is beneficial to the screwing-in of the screw sleeve rod 180.

[0044] As Figures 6-9As shown, the shredding component 330 includes a push plate 331, a threaded rod 332, a third guide post 333, a second connecting sleeve 334, a guiding block 335, a support plate 336, and a guiding rod 337. The push plate 331 is vertically arranged within the retaining ring 30, and the push plate 331 faces the second feed port 320 of the retaining ring 30. The third guide post 333 is perpendicularly fixed to the plate surface of the push plate 331. There are two third guide posts 333 arranged in parallel. One end of the second connecting sleeve 334 is fixedly connected to the inner wall of the retaining ring 30, and the other end is sleeved on the third guide post 333. A second spring is sleeved on the third guide post 333 and the second connecting sleeve 334. One end of the threaded rod 332 is rotatably connected to the plate surface of the push plate 331, and the other end extends into the second feed port 320 of the retaining ring 30. The support plate 336 is horizontally fixed at the inner wall of the retaining ring 30. The guiding rod 337 is vertically fixed to the bottom of the support plate 336. The guiding block 335 is fixed to the plate surface of the push plate 331. The upper and lower surfaces of the guiding block 335 are inclined. The bottom end of the guiding rod 337 is located within the helical groove of the threaded rod 332. A trigger plate 263 is fixedly connected to the bottom of the connecting block 262. The trigger plate 263 is horizontally arranged. In the initial state, the trigger plate 263 is at the bottom of the guiding block 335 and contacts the bottom inclined surface of the guiding block 335. A shredding rod 338 is fixedly arranged at the end of the threaded rod 332. There are multiple shredding rods 338 arranged at uniform intervals. The shredding rod 338 is conical. After the soil drilling is completed, the second motor 220 drives the pull rod 260 to move upward, then drives the connecting block 262 to move upward along the connecting column 310, thereby driving the trigger plate 263 to move upward. Then the trigger plate 263 abuts against the bottom inclined surface of the guiding block 335, thereby driving the push plate 331 to move towards the second feed port 320 of the retaining ring 30, so that the end of the threaded rod 332 extends out of the second feed port 320 of the retaining ring 30. During the movement of the threaded rod 332, the guiding rod 337 drives the threaded rod 332 to rotate, and the shredding rod 338 crushes the soil. If there are gravel blocks in the soil near the second feed port 320, during the movement of the threaded rod 332 towards the second feed port 320 of the retaining ring 30, the shredding rod 338 can push the gravel blocks away from the second feed port 320 of the retaining ring 30. Then the second motor 220 continues to drive the pull rod 260 to move upward, and the connecting block 262 abuts against the external step at the top of the connecting column 310. The pull rod 260 can pull the retaining ring 30 to move upward, so that the first feed port 181 on the wall of the spiral sleeve rod 180 is opened. The crushed soil can enter onto the bearing plate 420 through the first feed port 181, and then fall into the chromatograph 40 through the feed hole 421 for detection. During the process of the knocking head 570 knocking on the inner wall of the spiral sleeve rod 180, it is beneficial for the soil to enter onto the bearing plate 420.

[0045] As Figure 7 , Figures 10-11As shown in the figure, a discharging assembly is arranged in the discharging pipe 410. The discharging assembly includes a mounting housing 411, a second connecting shaft 412, a third bevel gear 414, a fourth bevel gear 415, and a screw rod 416. The mounting housing 411 is arranged in the discharging pipe 410. The second connecting shaft 412 is rotatably arranged in the discharging pipe 410. The second connecting shaft 412 passes through the mounting housing 411. The third bevel gear 414 is coaxially fixed on the second connecting shaft 412. The screw rod 416 is rotatably mounted on the mounting housing 411. The central axis of the screw rod 416 extends into the mounting housing 411. The fourth bevel gear 415 is coaxially fixed and sleeved on the end of the screw rod 416. The fourth bevel gear 415 meshes with the third bevel gear 414. Tooth blocks two 413 are arranged on the circumferential surface of the end of the second connecting shaft 412. There are multiple tooth blocks two 413 and they are evenly arranged around the circumference of the end of the second connecting shaft 412. A connecting plate 340 is vertically arranged at the bottom of the retaining ring 30. The connecting plate 340 passes through the plate surface of the bearing plate 420 and extends vertically downward. The connecting plate 340 is close to the end of the second connecting shaft 412. A second mounting plate 341 is arranged on the plate surface of the connecting plate 340. The second mounting plate 341 is close to the bottom of the connecting plate 340. The second mounting plate 341 is elastically connected to the plate surface of the connecting plate 340. Tooth blocks one 342 are arranged on the plate surface of the second mounting plate 341. There are multiple tooth blocks one 342 and they are evenly arranged up and down. The bottom inclined surface of the tooth block one 342 is inclined. The tooth block one 342 meshes with the tooth block two 413. When the connecting column 310 pulls the retaining ring 30 to move upward, the connecting plate 340 is driven to move upward, and then the second connecting shaft 412 is driven to rotate, thereby driving the screw rod 416 to rotate, so that the detected soil in the discharging pipe 410 can be discharged through the discharging port of the discharging pipe 410.

[0046] Working principle:

[0047] During the use of the present invention, when the first motor 120 drives the first mounting plate 110 to move downward, the first rack 170 drives the first gear 193 to rotate, thereby driving the rotating shaft 192 and the first connecting shaft 195 to rotate. Then, the spiral sleeve rod 180 is driven to rotate, so as to drill the soil. The second motor 220 drives the lifting block 250 to move upward, thereby driving the pull rod 260 to move upward. Then, the second rack 261 drives the third gear 520 and the turntable 530 to rotate, so that the convex block 540 abuts against the knocking plate 550, and thus the knocking head 570 knocks the inner wall of the spiral sleeve rod 180, which is beneficial to the rotation of the spiral sleeve rod 180 for drilling the soil. After the drilling of the soil is completed, the second motor 220 drives the pull rod 260 to move upward. Then, the connecting block 262 is driven to move upward along the connecting column 310, thereby driving the trigger plate 263 to move upward. Then, the trigger plate 263 abuts against the bottom inclined surface of the guiding block 335, so as to drive the push plate 331 to move towards the second feed port 320 close to the retaining ring 30, so that the end of the threaded rod 332 extends out of the second feed port 320 of the retaining ring 30. During the movement of the threaded rod 332, the guiding rod 337 drives the threaded rod 332 to rotate, and the crushing rod 338 crushes the soil. If there are gravel blocks in the soil near the second feed port 320, during the movement of the threaded rod 332 towards the second feed port 320 close to the retaining ring 30, the crushing rod 338 can push the gravel blocks away from the second feed port 320 of the retaining ring 30. Then, the second motor 220 continues to drive the pull rod 260 to move upward, and the connecting block 262 abuts against the external step at the top of the connecting column 310. The pull rod 260 can pull the retaining ring 30 to move upward, so that the first feed port 181 on the wall of the spiral sleeve rod 180 is opened. The crushed soil can enter onto the bearing plate 420 through the first feed port 181, and then fall into the chromatograph 40 through the feed hole 421 for detection. During the process that the knocking head 570 knocks the inner wall of the spiral sleeve rod 180, it is beneficial for the soil to enter onto the bearing plate 420. When the connecting column 310 pulls the retaining ring 30 to move upward, the connecting plate 340 is driven to move upward. Then, the second connecting shaft 412 is driven to rotate, thereby driving the spiral rod 416 to rotate, so that the soil detected in the discharge pipe 410 can be discharged from the discharge port of the discharge pipe 410.

[0048] It should be noted that the above specific embodiments are only the preferred embodiments of the present invention and the applied technical principles. Those skilled in the art should understand that various modifications, equivalent replacements, changes, etc. can be made to the present invention. However, as long as these transformations do not deviate from the spirit of the present invention, they should be within the protection scope of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A multi-point sampling and detection device for contaminated soil, characterized in that, It includes: A mobile trolley, a first mounting plate, a first motor, a first lead screw, a first guide post, a first connecting sleeve, a second connecting sleeve, a first rack, and a spiral sleeve rod. The first mounting plate is above the mobile trolley and is horizontally arranged. The first connecting sleeve and the second connecting sleeve are vertically arranged at the bottom of the first mounting plate. The first motor is mounted on the mobile trolley, and the output shaft of the first motor is vertically upward. One end of the first lead screw is coaxially and fixedly connected to the output shaft end of the first motor, and the other end extends into the first connecting sleeve. The first guide post is parallel to the first lead screw and is sleeved in the second connecting sleeve. The spiral sleeve rod is rotatably sleeved on the first mounting plate, and the bottom of the spiral sleeve rod passes through the plate surface of the mobile trolley. The first rack is vertically and fixedly arranged on the plate surface of the mobile trolley, and a transmission component is arranged on the plate surface of the first mounting plate. The transmission component includes a support plate, a rotating shaft, a first gear, a first bevel gear, a first connecting shaft, a second bevel gear, a second gear, and a toothed ring. The support plate is fixed on the plate surface of the first mounting plate. The rotating shaft is rotatably mounted on the support plate and is horizontally arranged. The first gear and the first bevel gear are respectively sleeved at the ends of the rotating shaft. The first connecting shaft is vertically and rotatably arranged on the first mounting plate. The second bevel gear and the second gear are respectively coaxially and fixedly sleeved at the ends of the first connecting shaft. The second bevel gear meshes with the first bevel gear. The toothed ring is coaxially and fixedly sleeved at the top of the spiral sleeve rod. The first gear meshes with the first rack, and the toothed ring meshes with the second gear.

2. The multi-point sampling and detection device for contaminated soil according to claim 1, characterized in that, A first feed port is provided in the wall of the spiral sleeve rod, and the first feed port is close to the bottom of the spiral sleeve rod. A chromatograph is arranged in the spiral sleeve rod. A display screen for displaying the detection result of the chromatograph is arranged on the mobile trolley. The chromatograph is below the first feed port of the spiral sleeve rod. A discharge pipe is connected to the bottom of the chromatograph. A bearing plate is horizontally arranged at the top of the chromatograph. A feed hole is provided at the center of the bearing plate. The discharge port of the discharge pipe passes through the wall of the spiral sleeve rod. A retaining ring is fitted in the spiral sleeve rod. The retaining ring is at the top of the bearing plate and seals the first feed port. A second feed port is provided in the wall of the retaining ring, and the second feed port coincides with the first feed port. A material crushing component is arranged in the retaining ring. A lifting mechanism for lifting the retaining ring is arranged at the top of the spiral sleeve rod.

3. The multi-point sampling and detection device for contaminated soil according to claim 2, characterized in that, The lifting mechanism includes a mounting frame, a second motor, a second lead screw, a second guide post, a lifting block, and a pull rod. The mounting frame is fixedly arranged at the top of the spiral sleeve rod. The second motor is mounted on the top of the mounting frame, and the output shaft of the second motor is vertically downward. One end of the second lead screw is coaxially and fixedly connected to the output shaft end of the second motor, and the other end is rotatably connected to the top of the spiral sleeve rod. The second guide post is parallel to the second lead screw. The lifting block is sleeved on the second lead screw and the second guide post. The pull rod is fixedly connected to the bottom of the lifting block. The pull rod extends into the spiral sleeve rod. Two connecting columns are vertically and fixedly connected to the top of the retaining ring and are arranged in parallel. An external step is provided at the top of the connecting column. A connecting block is sleeved on the connecting column, and the connecting block is fixedly connected to the bottom of the pull rod. A knocking mechanism is arranged in the spiral sleeve rod.

4. The multi-point sampling and detection device for contaminated soil according to claim 3, wherein The knocking mechanism includes the third mounting plate, the third gear, the turntable, the bump, the knocking plate, the fourth guide post, and the knocking head. The third mounting plate is fixed to the inner wall of the screw sleeve rod. The third gear and the turntable are rotatably mounted on the plate surface of the third mounting plate. The fourth guide post is horizontally and fixedly connected to the inner wall of the screw sleeve rod. There are two fourth guide posts arranged in parallel. The end of the fourth guide post is provided with an external step. The knocking plate is sleeved on the fourth guide post. The knocking head is vertically arranged on the plate surface of the knocking plate. The end of the knocking head is close to the inner wall of the screw sleeve rod. The bump is fixedly arranged on the circumference of the turntable. There are multiple bumps evenly surrounding the circumference of the turntable. The knocking plate is in contact with the circumferential surface of the turntable. A first spring is sleeved on the fourth guide post. One end of the first spring is in contact with the knocking plate, and the other end is in contact with the inner wall of the screw sleeve rod. A second rack is fixedly arranged on the pull rod, and the second rack meshes with the third gear.

5. The multi-point sampling and detection device for contaminated soil according to claim 4, wherein The crushing component includes a push plate, a threaded rod, the third guide post, the second connecting sleeve, a guiding block, a support plate, and a guiding rod. The push plate is vertically arranged in the retaining ring and is opposite to the second feed port of the retaining ring. The third guide post is vertically and fixedly arranged on the plate surface of the push plate. There are two third guide posts arranged in parallel. One end of the second connecting sleeve is fixedly connected to the inner wall of the retaining ring, and the other end is sleeved on the third guide post. A second spring is sleeved on the third guide post and the second connecting sleeve. One end of the threaded rod is rotatably connected to the plate surface of the push plate, and the other end extends into the second feed port of the retaining ring. The support plate is horizontally and fixedly arranged on the inner wall of the retaining ring. The guiding rod is vertically and fixedly arranged at the bottom of the support plate. The guiding block is fixedly arranged on the plate surface of the push plate. The upper and lower surfaces of the guiding block are inclined. The bottom end of the guiding rod is located in the helical groove of the threaded rod. A trigger plate is fixedly connected to the bottom of the connecting block. The trigger plate is horizontally arranged. In the initial state, the trigger plate is at the bottom of the guiding block and is in contact with the bottom inclined surface of the guiding block. A crushing rod is fixedly arranged at the end of the threaded rod. There are multiple crushing rods arranged at equal intervals. The crushing rods are conical.

6. The multi-point sampling and detection device for contaminated soil according to claim 5, wherein, A discharging component is arranged in the discharging pipe. The discharging component includes a mounting housing, a second connecting shaft, a third bevel gear, a fourth bevel gear, and a screw rod. The mounting housing is arranged in the discharging pipe. The second connecting shaft is rotatably arranged in the discharging pipe. The second connecting shaft passes through the mounting housing. The third bevel gear is coaxially fixed on the second connecting shaft. The screw rod is rotatably mounted on the mounting housing. The central axis of the screw rod extends into the mounting housing. The fourth bevel gear is coaxially fixedly sleeved on the end of the screw rod. The fourth bevel gear meshes with the third bevel gear. Multiple tooth blocks two are arranged on the circumference of the end of the second connecting shaft and are evenly surrounded by the circumference of the end of the second connecting shaft. A connecting plate is vertically arranged at the bottom of the retaining ring. The connecting plate passes through the plate surface of the bearing plate and extends vertically downward. The connecting plate is close to the end of the second connecting shaft. A second mounting plate is arranged on the plate surface of the connecting plate. The second mounting plate is close to the bottom of the connecting plate. The second mounting plate is elastically connected to the plate surface of the connecting plate. Multiple tooth blocks one are arranged on the plate surface of the second mounting plate and are evenly arranged up and down. The bottom inclined surface of the tooth block one is inclined. The tooth block one meshes with the tooth block two.

7. The detection method of a multi-point soil sampling and detection device for contaminated soil according to claim 6, the method is as follows: S1. During the process of the first motor driving the mounting plate to move downward, the first rack drives the first gear to rotate, thereby driving the rotating shaft and the first connecting shaft to rotate, and then driving the spiral sleeve rod to rotate, so as to drill the soil. The second motor drives the lifting block to move upward, thereby driving the pull rod to move upward, and then the second rack drives the third gear and the turntable to rotate, so that the convex block abuts against the knocking plate, so that the knocking head knocks on the inner wall of the spiral sleeve rod; After the drilling of the soil is completed, the second motor drives the pull rod to move upward, and then drives the connecting block to move upward along the connecting column, thereby driving the trigger plate to move upward. Then the trigger plate abuts against the bottom inclined surface of the guiding block, thereby driving the push plate to move towards the second feeding port close to the retaining ring, so that the end of the threaded rod extends out of the second feeding port of the retaining ring. During the movement of the threaded rod, the guiding rod drives the threaded rod to rotate, and the crushing rod crushes the soil. If there are gravel blocks in the soil close to the second feeding port, during the movement of the threaded rod towards the second feeding port close to the retaining ring, the crushing rod can push the gravel blocks away from the second feeding port of the retaining ring. Then the second motor continues to drive the pull rod to move upward, the connecting block abuts against the external step at the top of the connecting column, and the pull rod can pull the retaining ring upward, so that the first feeding port on the wall of the spiral sleeve rod is opened, and the crushed soil can enter the bearing plate through the first feeding port, and then fall into the chromatograph through the feeding hole for detection; When the connecting column pulls the retaining ring upward, it drives the connecting plate to move upward, then drives the second connecting shaft to rotate, and then drives the spiral rod to rotate, so as to discharge the detected soil in the discharge pipe through the discharge port of the discharge pipe.

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