Soil pollution detection device and detection method

Abstract

The invention discloses a soil pollution detection device and a detection method, and relates to the technical field of soil detection.The soil pollution detection device comprises a detection table, a position adjusting part, a detector and a storage box are sequentially arranged at the top of the detection table, a sampling unit is arranged on the position adjusting part, and a discharging unit is arranged on the sampling unit; a crushing unit is arranged at the bottom of the sampling unit, a material blocking unit is arranged at the bottom of the crushing unit, the sampling unit comprises a mounting base, a lifting base is vertically and slidably connected to the end of the mounting base, a rotating base is rotatably connected to the bottom of the lifting base, and a rotating rod is detachably connected to the bottom of the rotating base; according to the high-hardness soil sampling device, during sampling and lifting, soil samples are effectively prevented from falling off, the soil samples can be conveniently taken out of the sampling part, residual of the samples is prevented, and in addition, the sampling part is prevented from being stuck by high-hardness soil.

Description

Technical Field

[0001] The present invention relates to the technical field of soil detection, and in particular to a soil pollution detection device and a detection method. Background Art

[0002] Soil pollution detection is a key link in environmental protection. It is crucial for assessing soil environmental quality, protecting ecological security and human health. Elements such as lead, cadmium, mercury, chromium, arsenic, etc. are easily introduced into the soil during industrial wastewater discharge, mining, fertilizer and pesticide use, etc., and are difficult to degrade in the soil. They can be enriched through the food chain and become toxic to organisms. Therefore, it is necessary to detect the degree of soil pollution.

[0003] The Chinese patent application number 2023112569116 discloses a soil pollution monitoring device, including a base support frame, two guide sliding plates are symmetrically arranged on the inner side of the base support frame, and the guide sliding plates are provided with a first guide rail, a second guide rail and a latch rail, and a latch rail is slidably installed on the latch rail. A guide seat is also fixedly installed in the middle of the base support frame, and a movable seat is rotatably or fixedly installed on the guide seat. The movable seat is equipped with a centering roller group for centering the sampling steel pipe, and the top of the sampling steel pipe is clamped with a mounting seat, and the first support rod and the second support rod are slidably installed on both sides of the mounting seat, and the bottom ends of the first support rod and the second support rod are slidably matched with the first guide rail; and a feeding part is also included. However, during use, when the sampling part is lifted from the soil after the sampling is completed, part of the soil sample will fall, resulting in too little sample sampling to meet the detection requirements.

[0004] In addition, in the prior art, when the soil contains a high-hardness layer during the sampling process, the sampling work will be hindered, affecting the sampling efficiency. In addition, it is difficult to take out the obtained soil samples, and the samples will remain in the sampling components.

[0005] In view of this, the present invention proposes a soil pollution detection device and a detection method to solve several technical problems existing in the prior art. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the existing defects and provide a soil pollution detection device and a detection method, which can effectively prevent the soil sample from falling off during sampling and lifting, and facilitate the removal of the soil sample from the sampling part to prevent the sample from remaining. In addition, the sampling component can be prevented from being stuck by high-hardness soil, effectively solving the problems in the background technology.

[0007] To achieve the above-mentioned object, the present invention provides a soil pollution detection device, comprising a detection platform, wherein a position adjustment part, a detector and a storage box are sequentially arranged on the top of the detection platform, a sampling unit is arranged on the position adjustment part, a discharge unit is arranged on the sampling unit, a crushing unit is arranged at the bottom of the sampling unit, and a blocking unit is arranged at the bottom of the crushing unit; The sampling unit comprises a mounting seat, the end of the mounting seat is vertically slidably connected to a lifting seat, the bottom of the lifting seat is rotatably connected to a rotating seat, the bottom of the rotating seat is detachably connected to a rotating rod, the bottom end of the rotating rod is provided with a sampling barrel, and the mounting seat is provided with a driving part for driving the lifting seat to rise and fall; The discharge unit comprises a hydraulic rod and an annular plate, the bottom telescopic end of the hydraulic rod is provided with an annular seat through a connecting seat, and the top of the annular plate is provided with a sliding rod; The crushing unit comprises a mounting slot, the top of the mounting slot is provided with an electric telescopic rod, and the bottom telescopic end of the electric telescopic rod is provided with a movable rod; The blocking unit includes a cylindrical groove and a transmission seat. The bottom of the side of the cylindrical groove is provided with side grooves in a circular array. The inner side of the side groove is provided with a blocking plate movably provided through a rotating column. An elastic telescopic part is movably provided between the side of the transmission seat and each of the rotating columns. An electric push rod is provided on the top of the transmission seat.

[0008] Preferably, the position adjustment part comprises a rotating table, a lifting part is vertically provided on the top of the rotating table, a telescopic part is horizontally provided on the top of the lifting part, and the mounting seat is provided at the telescopic end of the telescopic part.

[0009] Preferably, the lifting seat is an L-shaped structure, the top of the rotating seat is transmission-connected with a drive motor, the drive motor is arranged on the side of the lifting seat, the circumferential surface of the sampling barrel is provided with spiral sheets, and the bottom surface of the sampling barrel is provided with crushing teeth in a circular array.

[0010] Preferably, the driving part includes a worm and a tooth plate, the worm is rotatably connected to the mounting seat via a support, the tooth plate is arranged on the side of the lifting seat, the tooth plate is meshed with the worm, a lifting motor is provided at the bottom of the support, and the output shaft of the lifting motor is fixedly connected to the end of the worm.

[0011] Preferably, the hydraulic rod is vertically arranged on the mounting seat, the annular seat is slidably sleeved on the outer side of the rotating rod, and the annular plate is slidably matched with the inner side of the sampling tube; A pressure sensor is provided between the annular plate and the bottom end of the slide rod. The top end of the slide rod passes through the top surface of the sampling tube. The slide rod corresponds to the bottom surface of the annular seat. A limit spring is sleeved on the outer end of the slide rod. The two ends of the limit spring are fixedly connected to the top surface of the sampling tube and the side surface of the slide rod respectively.

[0012] Preferably, the mounting groove is formed at the bottom end of the rotating rod, the mounting groove is communicated with the interior of the sampling tube, the movable rod is slidably matched with the central hole of the annular plate, and the bottom end of the movable rod is provided with a conical head; A rotating motor is arranged between the bottom end of the electric telescopic rod and the top end of the movable rod, and the output shaft of the rotating motor is fixedly connected to the top end of the movable rod.

[0013] Preferably, the elastic telescopic part includes a slide cylinder, which is arranged on the inner side of the rotating column, and a transmission rod is slidably matched inside the slide cylinder, and the top end of each transmission rod is hinged to the side of the transmission seat.

[0014] Preferably, the cylindrical groove is opened inside the movable rod, a return spring is provided inside the slide cylinder at a position at the bottom of the transmission rod, and the fixed end of the electric push rod is provided at the top of the cylindrical groove.

[0015] The present invention also provides a soil pollution detection method, which uses the soil pollution detection device as described above to detect soil pollution, and comprises the following steps: S1, using the position adjustment unit to lift and retract the sampling tube and then move it to a sampling position; S2, using the driving part to drive the sampling tube to move downward, and at the same time using the rotation of the rotating rod to drive the sampling tube to rotate, so that the sampling tube is fed into the soil below, and at the same time the soil enters the sampling tube to collect the sample; S3, after the sample collection is completed, the sampling cylinder is moved to a position corresponding to the storage box, and the soil sample collected in the sampling cylinder is discharged into the storage box by the discharge unit for storage; S4. The staff takes out the soil sample, dries it, and screens it to prepare it into a sample to be tested. The sample to be tested is placed in the detector to test the soil.

[0016] Compared with the prior art, the present invention has the following advantages: 1. When the sampling tube of the present invention encounters a high-hardness soil layer during sampling, the sampling tube is kept in a feeding and rotating state, and the movable rod is rotated at a high speed. The movable rod is extended downward by an electric telescopic rod until the conical head collides with the high-hardness soil layer. The electric telescopic rod is used to drive the conical head to move up and down to break the high-hardness soil layer, thereby ensuring that the sampling tube is smoothly fed downward.

[0017] 2. After sampling is completed, when the sampling tube is lifted upward and the soil sample falls off, the sampling tube is dropped to the bottom of the soil, the electric telescopic rod and the rotary motor are started, the bottom end of the movable rod passes through the middle of the soil sample and extends out of the bottom end of the sampling tube, the electric push rod is used to drive the transmission seat to move downward, the elastic telescopic part is used to rotate each blocking plate to a horizontal position, and then the blocking plate is moved upward to contact the bottom of the soil sample to support the soil sample, thereby preventing the soil sample from falling during the lifting process of the sampling tube.

[0018] 3. When the soil sample is difficult to be discharged from the sampling tube, the present invention extends the electric telescopic rod until the side groove is located at the bottom of the annular plate, and then drives the bottom end of the movable rod to move downward intermittently. At the same time, the rotating motor drives the movable rod to rotate. When the movable rod stops, the rotating motor continues to rotate, and the electric push rod is used to gradually open each blocking plate. Under the action of the rotating motor, the surrounding soil samples are moved to loosen. At the same time, the hydraulic rod is used to drive the annular seat to move up and down to reciprocate and impact the slide rod, so that the soil sample can be smoothly discharged from the sampling tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of another angle of the present invention; Figure 3 This is a schematic diagram of the structure of the sampling unit of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the sampling tube of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at A in the middle.

[0020] In the figure: 1. testing platform; 101. testing instrument; 102. storage box; 103. rotating platform; 104. lifting part; 105. telescopic part; 2. sampling unit; 201. mounting seat; 202. lifting seat; 203. rotating seat; 204. driving motor; 205. rotating rod; 206. sampling tube; 207. spiral sheet; 208. support; 209. worm; 210. tooth plate; 211. lifting motor; 3. discharging unit; 301. hydraulic rod; 302. connecting rod Connecting seat; 303, annular seat; 304, annular plate; 305, sliding rod; 306, limiting spring; 4, crushing unit; 401, mounting groove; 402, electric telescopic rod; 403, movable rod; 404, rotating motor; 405, conical head; 5, blocking unit; 501, cylindrical groove; 502, side groove; 503, rotating column; 504, blocking plate; 505, sliding cylinder; 506, transmission rod; 507, reset spring; 508, transmission seat; 509, electric push rod. DETAILED DESCRIPTION

[0021] 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. Embodiment 1

[0022] See also Figure 1-5 The present embodiment discloses a soil pollution detection device, including a detection platform 1. The top of the detection platform 1 is provided with a position adjustment part, a detector 101 and a storage box 102 in sequence. The detector 101 is preferably a soil heavy metal detector. The position adjustment part is used to adjust the height and horizontal position of the sampling unit 2. The storage box 102 is used to store the taken soil samples for subsequent detection.

[0023] The position adjustment part includes a rotating table 103, a lifting part 104 is vertically arranged on the top of the rotating table 103, and a telescopic part 105 is horizontally arranged on the top of the lifting part 104. The rotating table 103 is preferably an electric rotating mechanism, and the lifting part 104 and the telescopic part 105 are preferably electric or hydraulic telescopic devices.

[0024] The position adjustment part is provided with a sampling unit 2, which is used for drilling soil samples. The sampling unit 2 includes a mounting seat 201, which is arranged at the telescopic end of the telescopic part 105. The end of the mounting seat 201 is vertically slidably connected with a lifting seat 202. The lifting seat 202 is an L-shaped structure. The bottom of the lifting seat 202 is rotatably connected with a rotating seat 203. The top of the rotating seat 203 is transmission-connected with a driving motor 204. The driving motor 204 is arranged on the side of the lifting seat 202. The bottom of the rotating seat 203 is detachably connected with a rotating rod 2 05. A sampling barrel 206 is provided at the bottom end of the rotating rod 205. A spiral sheet 207 is provided on the circumferential surface of the sampling barrel 206. The driving motor 204 drives the rotating seat 203 to rotate. The rotating seat 203 drives the rotating rod 205 and the sampling barrel 206 to rotate. When the sampling barrel 206 drills deep into the soil, the spiral sheet 207 rotates with the sampling barrel 206, so that the sampling barrel 206 is fed downward faster. The bottom surface of the sampling barrel 206 is provided with crushing teeth in a circular array. When the sampling barrel 206 is fed downward, the crushing teeth are set to crush the high-hardness soil layer.

[0025] The mounting seat 201 is provided with a driving unit for driving the lifting seat 202 to rise and fall, and the driving unit includes a worm 209 and a tooth plate 210. The worm 209 is rotatably connected to the mounting seat 201 through the support 208. The tooth plate 210 is arranged on the side of the lifting seat 202, and the tooth plate 210 is meshed with the worm 209. A lifting motor 211 is provided at the bottom of the support 208. The output shaft of the lifting motor 211 is fixedly connected to the end of the worm 209. The lifting motor 211 drives the worm 209 to rotate, and the worm 209 drives the tooth plate 210 to move up and down, so that the mounting seat 201 drives the rotating rod 205 and the sampling tube 206 to move up and down, and the sampling tube 206 is fed downward and lifted upward.

[0026] The sampling unit 2 is provided with a discharge unit 3, which is used to take out the sample from the sampling unit 2. The discharge unit 3 includes a hydraulic rod 301 and an annular plate 304. The hydraulic rod 301 is vertically arranged on the mounting seat 201. The bottom telescopic end of the hydraulic rod 301 is provided with an annular seat 303 through a connecting seat 302. The annular seat 303 is slidably sleeved on the outside of the rotating rod 205. The annular plate 304 is slidably matched with the inner side of the sampling tube 206. A sliding rod 305 is provided on the top of the annular plate 304. The top of the sliding rod 305 passes through the top surface of the sampling tube 206. The sliding rod 305 and the annular plate 306 are connected to each other. The bottom surface of the seat 303 corresponds to that of the slide rod 305, and one end of the outside of the slide rod 305 is sleeved with a limit spring 306. The two ends of the limit spring 306 are respectively fixedly connected to the top surface of the sampling tube 206 and the side surface of the slide rod 305. The annular seat 303 is driven downward by the downward extension of the hydraulic rod 301, so that the annular seat 303 presses the slide rod 305 downward to drive the annular plate 304 to move downward. The limit spring 306 is compressed, and the sample material in the sampling tube 206 can be discharged. The annular seat 303 is initially located at the bottom of the rotating rod 205 to avoid interfering with the downward movement of the rotating rod 205.

[0027] It should be noted that the annular plate 304 is initially flush with the bottom surface of the sampling tube 206. When the sampling tube 206 is fed downward in the soil, the soil sample exerts an upward squeezing force on the annular plate 304. The annular plate 304 drives the slide rod 305 to move upward, and the limit spring 306 is in a stretched state.

[0028] A pressure sensor is provided between the annular plate 304 and the bottom end of the slide bar 305 , and the pressure sensor is used to detect the downward pressure applied by the slide bar 305 to the annular plate 304 .

[0029] When in use, the detection platform 1 is moved to the area to be detected, and the rotating table 103 is used to drive the lifting part 104 to rotate so that the sampling tube 206 is located above the soil to be sampled, and then the lifting part 104 is contracted to drive the sampling tube 206 to move downward so that the sampling tube 206 is in contact with the top of the soil.

[0030] Secondly, start the drive motor 204 to drive the rotating rod 205 and the sampling tube 206 to rotate through the rotating seat 203. At the same time, start the lifting motor 211, and use the worm 209 to engage with the tooth grooves on the tooth plate 210 to drive the lifting seat 202 to move downward, so that the sampling tube 206 is fed downward, and the spiral piece 207 is used to make the sampling tube 206 drill downward for sampling. While the sampling tube 206 is fed downward, the soil sample squeezes the annular plate 304 and the slide bar 305 upward to move upward. Under the gradual compression of the limit spring 306, the force on the pressure sensor gradually increases. When the pressure sensor detects that the pressure signal increases to the first pressure threshold, it means that the sampling amount of the soil sample in the sampling tube 206 reaches the preset amount. At this time, the sampling tube 206 is stopped from feeding downward for sampling.

[0031] Then, the lifting motor 211 and the driving motor 204 are started in reverse synchronously, so that the sampling tube 206 rotates in the opposite direction and is lifted upward to be separated from the soil. The sampling tube 206 is moved to a position corresponding to the top of the storage box 102 by using the rotating table 103 and the position adjustment part again, and the hydraulic rod 301 is started to drive the annular seat 303 to move downward, so that the annular seat 303 contacts the top of the slide bar 305 and presses the slide bar 305 downward, so that the slide bar 305 drives the annular plate 304 to move downward, and the soil sample at the bottom of the annular plate 304 is discharged from the sampling tube 206 and falls into the storage box 102 for storage. At the same time, the annular plate 304 cooperates with the inner wall of the sampling tube 206 to effectively prevent the sample from remaining, and the sample is completely discharged. The staff dries and screens the stored samples to make the samples to be tested and places them into the detector 101 for testing. Embodiment 2

[0032] When the sampling tube 206 is feeding downwards to take samples, if the sampling tube 206 encounters a hard soil layer or a stone, the sampling tube 206 cannot continue to feed downwards to take samples. Therefore, a second embodiment is proposed: A crushing unit 4 is provided at the bottom of the sampling unit 2. The crushing unit 4 clears the blockage caused by materials in the sampling tube 206. The crushing unit 4 includes a mounting groove 401. The mounting groove 401 is opened at the bottom end of the rotating rod 205. The mounting groove 401 is connected with the inside of the sampling tube 206. An electric telescopic rod 402 is provided at the top of the mounting groove 401. A movable rod 403 is provided at the bottom telescopic end of the electric telescopic rod 402. The movable rod 403 is slidably matched with the center hole of the annular plate 304. A conical head 405 is provided at the bottom end of the movable rod 403. The bottom end of the movable rod 403 is initially flush with the bottom end of the mounting groove 401. The movable rod 403 is lifted and lowered by the telescopic control of the electric telescopic rod 402 to drive the conical head 405 to move up and down, so as to crush the hard soil.

[0033] A rotating motor 404 is provided between the bottom end of the electric telescopic rod 402 and the top end of the movable rod 403. The output shaft of the rotating motor 404 is fixedly connected to the top end of the movable rod 403. The rotating motor 404 drives the movable rod 403 to rotate, and the movable rod 403 drives the conical head 405 to rotate.

[0034] When in use, when the driving unit and the driving motor 204 are unable to drive the rotating rod 205 and the sampling tube 206 to continue to feed downward, the pressure sensor detects that the pressure signal is no longer continuously increasing, and actively determines that the sampling tube 206 encounters a high-hardness soil layer. At this time, the sampling tube 206 is kept in the feeding and rotating state, and the rotating motor 404 is started to make the movable rod 403 drive the conical head 405 to rotate at a high speed. At the same time, the electric telescopic rod 402 is extended downward to make the movable rod 403 feed and extend downward, so that the movable rod 403 The sample at the bottom end passes through the sampling tube 206 and reaches the bottom of the sampling tube 206, so that the conical head 405 is in contact with the high-hardness soil layer. The electric telescopic rod 402 is then used to reciprocate and extend to drive the conical head 405 to move up and down, so that the conical head 405 reciprocates and hits the high-hardness soil layer at the bottom to crush the high-hardness soil layer. During the crushing process, when the pressure sensor detects that the pressure signal continues to increase, it means that the sampling tube 206 is feeding downward normally to take samples, and the crushing of the high-hardness soil layer is completed, so that the movable rod 403 can be reset. Embodiment 3

[0035] When the sampling tube 206 is lifted upward from the soil after sampling, the soil will fall out of the sampling tube 206 if it is relatively soft, resulting in the amount of soil sample collected being less than the detection requirement. In order to solve the above problem, the third embodiment is proposed: A blocking unit 5 is provided at the bottom of the crushing unit 4, and the blocking unit 5 is used to prevent the material in the sampling tube 206 from falling. The blocking unit 5 includes a cylindrical groove 501 and a transmission seat 508. The cylindrical groove 501 is opened inside the movable rod 403, and the side bottom of the cylindrical groove 501 is provided with a side groove 502 in a ring array. The inner side of the side groove 502 is movably provided with a blocking plate 504 through a rotating column 503. The blocking plate 504 is initially in a vertical state and is located inside the side groove 502. An elastic telescopic part is movably provided between the side of the transmission seat 508 and each rotating column 503. The elastic telescopic part includes a slide cylinder 505, which is arranged on the inner side of the rotating column 503. The interior of the slide cylinder 505 is slidably matched with a transmission rod 506. Each transmission rod 50 6 is hinged to the side of the transmission seat 508, and a return spring 507 is provided inside the slide 505 at the bottom of the transmission rod 506. An electric push rod 509 is provided on the top of the transmission seat 508, and the fixed end of the electric push rod 509 is arranged at the top of the cylindrical groove 501. The extension of the electric push rod 509 drives the transmission seat 508 to move downward, and the elastic telescopic part is compressed and gradually tends to be horizontal, that is, the transmission rod 506 slides into the slide 505, and the slide 505 drives the rotating column 503 to rotate, and each blocking plate 504 gradually opens to the outside, and the return spring 507 is compressed. When the elastic telescopic part is in a horizontal state, the blocking plate 504 is rotated to a horizontal state. At this time, the end of the blocking plate 504 is in contact with the inner wall of the sampling tube 206.

[0036] When in use, after the sampling tube 206 has finished sampling and is lifted upward, when the soil at the bottom of the sampling tube 206 falls off, the friction between the sample and the inner wall of the sampling tube 206 will be reduced, causing the stretched limit spring 306 to contract, causing the annular plate 304 to move downward. At this time, the pressure on the pressure sensor continues to decrease within the first pressure threshold range, and it is actively determined that a soil sample has fallen out of the sampling tube 206. At this time, the sampling tube 206 is dropped to the initial lifting position in the soil to prevent the sample from continuing to fall off. Secondly, the electric telescopic rod 402 and the rotating motor 404 are synchronously started, so that the bottom end of the movable rod 403 rotates in sequence to pass through the middle of the annular plate 304 and the soil sample, and the bottom end of the movable rod 403 is lower than the sampling tube 206. At the bottom end, at this time, the side groove 502 is located below the sampling tube 206, and then the electric push rod 509 is started. The electric push rod 509 extends and drives the transmission seat 508 to move downward, so that the slide 505 and the transmission rod 506 gradually rotate to a horizontal state. At the same time, the transmission rod 506 compresses the reset spring 507. When the slide 505 rotates to a horizontal state, each blocking plate 504 rotates to a horizontal state with the rotating column 503. At this time, the electric telescopic rod 402 is contracted to drive the blocking plate 504 to move upward, so that the blocking plate 504 is in contact with the bottom of the soil sample in the sampling tube 206, so that the blocking plate 504 supports the soil sample, and the sampling tube 206 can continue to be lifted upward, effectively preventing the soil sample from falling during the lifting process of the sampling tube 206. Embodiment 4

[0037] When sampling in high-viscosity soil, the soil sample is subjected to high squeezing force after entering the sampling tube 206, resulting in high density between the soil samples. In addition, the high viscosity of the soil makes it difficult to remove the soil sample from the sampling tube 206, resulting in difficulty in removing the sample. In order to solve the above problem, embodiment 4 is proposed: When the soil sample in the sampling tube 206 is discharged by using the discharge unit 3, the annular seat 303 presses the bottom end of the slide rod 305 downward, causing the pressure value of the pressure sensor to increase. When the pressure value of the pressure sensor is greater than the set second pressure threshold, and the second pressure threshold is greater than the first pressure threshold, it means that the pressure of the annular seat 303 on the slide rod 305 has reached the limit. If the pressure continues to be applied, the slide rod 305 and the annular plate 304 will be deformed. At this time, the electric telescopic rod 402 is first extended to a certain length, and the side groove 502 moves to the bottom of the annular plate 304. At this time, the electric telescopic rod 402 is intermittently extended, and the extension amplitude each time is gradually increased. At the same time, the rotating motor 404 drives the movable rod 403 to rotate synchronously, so that the bottom end of the movable rod 403 moves downward intermittently from the top of the sampling tube 206 to the bottom of the sampling tube 206. When the movable rod 403 stops moving downward, the rotating motor 404 keeps rotating. At this time, the electric push rod 509 is slowly started to extend, so that each blockage The plate 504 gradually opens, and the blocking plate 504 gradually opens and rotates under the action of the rotating motor 404, so that the blocking plate 504 in the rotating and gradually opening state stirs the surrounding soil samples to loosen the soil in the sampling tube 206, that is, the intermittent extension of the electric telescopic rod 402 is used to loosen the soil samples at various positions in the vertical direction of the sampling tube 206. While loosening, the intermittent extension of the hydraulic rod 301 is used to make the annular seat 303 move up and down reciprocatingly, and when the annular seat 303 moves downward, it hits the top of the sliding rod 305, so that the annular plate 304 reciprocates and vibrates downward on the soil sample in the sampling tube 206, so that the loosened soil sample is gradually discharged from the sampling tube 206, and as the annular plate 304 moves downward, the telescopic length of the hydraulic rod 301 is adaptively adjusted, so that the high-viscosity and high-density soil samples in the sampling tube 206 are smoothly discharged by the coordinated linkage between the discharge unit 3, the crushing unit 4 and the blocking unit 5. Embodiment 5

[0038] This embodiment discloses a soil pollution detection method, comprising the following steps: S1, using the position adjustment unit to lift and retract the sampling tube 206 to a position to be sampled; S2, using the driving part to drive the sampling cylinder 206 to move downward, and at the same time using the rotation of the rotating rod 205 to drive the sampling cylinder 206 to rotate, so that the sampling cylinder 206 is fed into the soil below, and at the same time the soil enters the sampling cylinder 206 to collect the sample; S3, after the sample collection is completed, the sampling cylinder 206 is moved to a position corresponding to the storage box 102, and the soil sample collected in the sampling cylinder 206 is discharged into the storage box 102 by the discharge unit 3 for storage; S4. The staff takes out the soil sample, dries it, and screens it to prepare it into a sample to be tested. The sample to be tested is placed in the detector 101 to test the soil.

[0039] It should be noted that the specific soil pollution detection method refers to the above embodiment.

[0040] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A soil pollution detection device, comprising a detection platform (1), wherein a position adjustment unit, a detector (101) and a storage box (102) are sequentially arranged on the top of the detection platform (1), characterized in that: The position adjustment portion is provided with a sampling unit (2), the sampling unit (2) is provided with a discharge unit (3), the bottom of the sampling unit (2) is provided with a crushing unit (4), and the bottom of the crushing unit (4) is provided with a blocking unit (5); The sampling unit (2) comprises a mounting seat (201), the end of the mounting seat (201) is vertically slidably connected to a lifting seat (202), the bottom of the lifting seat (202) is rotatably connected to a rotating seat (203), the bottom of the rotating seat (203) is detachably connected to a rotating rod (205), the bottom end of the rotating rod (205) is provided with a sampling barrel (206), and the mounting seat (201) is provided with a driving unit for driving the lifting seat (202) to move up and down; The discharge unit (3) comprises a hydraulic rod (301) and an annular plate (304); the bottom telescopic end of the hydraulic rod (301) is provided with an annular seat (303) via a connecting seat (302); and the top of the annular plate (304) is provided with a sliding rod (305).

2. The soil pollution detection device according to claim 1, characterized in that: The position adjustment portion comprises a rotating platform (103), a lifting portion (104) is vertically provided on the top of the rotating platform (103), a telescopic portion (105) is horizontally provided on the top of the lifting portion (104), and the mounting seat (201) is provided at the telescopic end of the telescopic portion (105).

3. The soil pollution detection device according to claim 1, characterized in that: The lifting seat (202) is an L-shaped structure. The top of the rotating seat (203) is connected to a driving motor (204) in a transmission manner. The driving motor (204) is arranged on the side of the lifting seat (202). The circumferential surface of the sampling barrel (206) is provided with a spiral sheet (207). The bottom surface of the sampling barrel (206) is provided with crushing teeth in a circular array.

4. The soil pollution detection device according to claim 1, characterized in that: The driving part comprises a worm (209) and a tooth plate (210); the worm (209) is rotatably connected to the mounting seat (201) via a support (208); the tooth plate (210) is arranged on a side of the lifting seat (202); the tooth plate (210) is meshed with the worm (209); a lifting motor (211) is arranged at the bottom of the support (208); an output shaft of the lifting motor (211) is fixedly connected to an end of the worm (209).

5. The soil pollution detection device according to claim 1, characterized in that: The hydraulic rod (301) is vertically arranged on the mounting seat (201), the annular seat (303) is slidably sleeved on the outer side of the rotating rod (205), and the annular plate (304) is slidably matched with the inner side of the sampling tube (206); A pressure sensor is provided between the annular plate (304) and the bottom end of the slide rod (305); the top end of the slide rod (305) penetrates the top surface of the sampling tube (206); the slide rod (305) corresponds to the bottom surface of the annular seat (303); an outer end of the slide rod (305) is sleeved with a limit spring (306); and two ends of the limit spring (306) are fixedly connected to the top surface of the sampling tube (206) and the side surface of the slide rod (305), respectively.

6. The soil pollution detection device according to claim 1, characterized in that: The crushing unit (4) comprises a mounting groove (401), the top of the mounting groove (401) is provided with an electric telescopic rod (402), the bottom telescopic end of the electric telescopic rod (402) is provided with a movable rod (403), the mounting groove (401) is opened at the bottom end of the rotating rod (205), the mounting groove (401) is connected with the inside of the sampling tube (206), the movable rod (403) is slidably matched with the center hole of the annular plate (304), and the bottom end of the movable rod (403) is provided with a conical head (405); A rotating motor (404) is provided between the bottom end of the electric telescopic rod (402) and the top end of the movable rod (403), and an output shaft of the rotating motor (404) is fixedly connected to the top end of the movable rod (403).

7. The soil pollution detection device according to claim 6, characterized in that: The blocking unit (5) comprises a cylindrical groove (501) and a transmission seat (508); the bottom of the side of the cylindrical groove (501) is provided with side grooves (502) in a circular array; the inner side of the side groove (502) is movably provided with a blocking plate (504) via a rotating column (503); an elastic telescopic portion is movably provided between the side of the transmission seat (508) and each of the rotating columns (503); an electric push rod (509) is provided at the top of the transmission seat (508); the elastic telescopic portion comprises a slide cylinder (505); the slide cylinder (505) is provided on the inner side of the rotating column (503); a transmission rod (506) is slidably matched inside the slide cylinder (505); the top end of each of the transmission rods (506) is hinged to the side of the transmission seat (508).

8. The soil pollution detection device according to claim 7, characterized in that: The cylindrical groove (501) is opened inside the movable rod (403), a return spring (507) is provided inside the slide cylinder (505) at a position at the bottom of the transmission rod (506), and the fixed end of the electric push rod (509) is arranged at the top end of the cylindrical groove (501).

9. A soil pollution detection method, wherein the soil pollution detection device according to claim 1 is used to detect soil pollution, and the method is characterized in that: The following steps are involved: S1, using the position adjustment unit to lift and retract the sampling tube (206) to a position to be sampled; S2, using the driving unit to drive the sampling tube (206) to move downward, and at the same time using the rotation of the rotating rod (205) to drive the sampling tube (206) to rotate, so that the sampling tube (206) is fed into the soil below, and at the same time the soil enters the sampling tube (206) to collect samples; S3, after sample collection is completed, the sampling cylinder (206) is moved to a position corresponding to the storage box (102), and the discharge unit (3) is used to discharge the soil sample collected in the sampling cylinder (206) into the storage box (102) for storage; S4. The staff takes out the soil sample, dries it, and screens it to prepare a sample to be tested. The sample to be tested is placed in the detector (101) to test the soil.

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