Deep soil sampler and method

Abstract

The invention discloses a deep soil sampler and method, and relates to the technical field of soil detection. The device comprises a pipe body, a conical block is detachably connected to the bottom end of the pipe body, an annular block is constructed on the outer side of the pipe body and is close to the conical block, and a plurality of connecting rods are detachably connected to the top end of the pipe body. By adopting the design of the static pressure device, the pipe body and the connecting rod are propelled at constant pressure, so that the soil structure is not easily damaged, the hole wall surface formed by the soil is smooth and flat, the granularity difference is small, detection is facilitated, then by adopting the design of the detection module, the soil humidity can be detected, the interference of the humidity on XRF is corrected, and the detection accuracy is improved. And finally, a sleeve and a sampling mechanism are matched, so that the purpose of'first detection and then collection 'can be realized, and invalid samples can be reduced by only carrying out physical sampling on the standard exceeding area, so that the detection efficiency is fundamentally improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soil detection, in particular to a deep soil sampler and method. BACKGROUND

[0002] Soil pollution is mainly caused by pollutants, which are generally divided into non-pollutants and organic pollutants. Although soil has self-purification function, when the soil contains too much harmful substances, the composition, structure and function of the soil will change, and the microbial activity will be inhibited. The harmful substances or their decomposition products will gradually accumulate in the soil and be indirectly absorbed by the human body through the "soil, plant, human body" system, thereby endangering human health. Therefore, it is necessary to sample and detect the soil in order to intervene in the contaminated soil in time for treatment.

[0003] The traditional soil heavy metal detection method has the following shortcomings: 1. The existing technology generally uses conventional drill bit samplers (such as spiral drill, core drill) to collect soil samples, but when operating in deep layers (more than 5 meters), the soil structure is easily damaged, and the real chemical state of the original state soil cannot be preserved; 2. The existing portable XRF (X-ray fluorescence) equipment is greatly affected by soil humidity and particle size, and under the premise that the soil structure is damaged, it cannot be effectively analyzed synchronously during the sampling process. Soil samples collected at different points need to be sent to the laboratory for detection. The soil samples are too many, the process is time-consuming, and the detection efficiency is poor. That is, the traditional soil heavy metal detection method cannot meet the needs of rapid screening and accurate management of contaminated sites. In order to reasonably improve this problem, the present application provides a deep soil sampler and method. SUMMARY

[0004] In order to achieve the above purpose, the present application specifically adopts the following technical scheme: A deep soil sampler, comprising: A pipe body, a conical block is detachably connected to the bottom end, an annular block is formed on the outer side of the pipe body and is close to the conical block, and a plurality of connecting rods are detachably connected to the top end of the pipe body; A static pressure device for applying static pressure to the pipe body and the connecting rods so that they can be pressed into the soil in sections; A sampling port is provided on the side of the pipe body, and a sampling mechanism is provided in the pipe body for sampling the soil outside the sampling port; A sleeve is slidingly installed on the outer side of the pipe body, the sleeve covers the sampling port, and the outer diameter of the sleeve is smaller than the outer diameter of the annular block, and a driving member is provided in the pipe body for driving the sleeve to slide; A fixing plate is provided at the top end of the sampling port, and a detection module is provided thereon, which can collect soil data outside the sampling port.

[0005] Further, the sampling mechanism comprises a cylindrical block mounted in the pipe body, the fixed plate is connected with the cylindrical block, the bottom of the cylindrical block is provided with a notch communicated with the sampling port, a rotating rod is rotatably mounted in the notch, the top end of the rotating rod is connected with a first motor, the rotating rod is connected with a scraper, the cylindrical surface formed by the rotation of the scraper intersects with the pipe body, the bottom of the cylindrical block is provided with a storage mechanism, and the collected soil samples can be separately stored through the storage mechanism.

[0006] Further, the storage mechanism comprises a movable block movably matched with the inner wall of the pipe body, a first arc-shaped groove corresponding to the notch is formed in the outer side of the movable block, and a containing groove for containing soil is formed in the top of the movable block, a plurality of movable blocks are linearly distributed along the axis of the pipe body, and a driving mechanism is arranged in the pipe body, so that the plurality of movable blocks can be rotated respectively through the driving mechanism.

[0007] Further, the driving mechanism comprises a second motor fixedly mounted in the pipe body, a movable rod is spline-connected to the output shaft of the second motor, a driving portion is arranged in the pipe body, the movable rod is driven to slide by the driving portion, the bottom end of the cylindrical block is provided with a first column groove, the bottom end of the movable rod movably penetrates the first column groove and is connected with a prism block, and a prism groove is penetrated through the movable block.

[0008] Further, the driving portion comprises a U-shaped block connected with the inner wall of the pipe body, helical blades are connected to the side of the movable rod, and balls are rotatably mounted on the inner wall of the U-shaped block and the two sides of the helical blades, respectively, the bottom end of the prism block is in the shape of a tapered block, a second column groove is formed in the bottom of the movable block and is communicated with the bottom end of the second column groove.

[0009] Further, the top of the tapered block is provided with a gas storage tank, a mounting box is mounted on the top of the gas storage tank, the top of the mounting box is abuttingly connected with the bottom of the movable block, a second arc-shaped groove is formed in the mounting box, a gas distribution box is arranged in the second arc-shaped groove, the output end of the gas storage tank penetrates the gas distribution box and is connected with an electromagnetic valve, and a plurality of gas outlets are distributed on the top end of the gas distribution box and used for cleaning the adhered soil samples.

[0010] Further, the gas distribution box is communicated with the mounting box, a gas outlet hole is formed in the top of the mounting box, a through groove is formed in the movable block in a position opposite to the through groove, and a communication hole communicated with the through groove is formed in the inner wall of the containing groove.

[0011] Further, the static pressure device comprises a mounting plate, a static pressure pile is mounted on the top of the mounting plate, and an annular plate is connected to the bottom of the mounting plate, a guide hole slidably matched with the pipe body and the connecting rod is formed in the mounting plate, a plurality of through holes communicated with the annular plate are annularly distributed on the side of the guide hole, an air compressor is mounted on the top of the mounting plate, an annular box communicated with the output end of the air compressor is connected to the inner wall of the annular plate, and air injection pipes are annularly distributed on the inner side of the annular box.

[0012] Further, the pipe body and the top end of the connecting rod are each provided with an insertion rod, the end of the insertion rod is configured with a column body, and the top end and the bottom end of the column body are respectively configured with a first tapered surface and a second tapered surface, the bottom end of the connecting rod is configured with a cylindrical groove, the end of the cylindrical groove is connected with a ring block, the ring block is configured with a third tapered surface, the cylindrical groove movably cooperates with a sleeve body, the bottom end of the sleeve body is configured with a fourth tapered surface, a plurality of movable grooves are annularly distributed on the fourth tapered surface, a plurality of balls are annularly distributed in the sleeve body and movably cooperate with the movable grooves, the sleeve body is configured with a ring plate, the insertion rod movably penetrates the inner side of the ring plate, a compression spring is arranged in the cylindrical groove and abuts and overlaps with the ring plate, the balls abut and overlap with the first tapered surface and the second tapered surface, and an annular electromagnet is arranged in the cylindrical groove and magnetically connected with the sleeve body.

[0013] The use method of the deep soil sampler, using the deep soil sampler, comprises the following steps: S1: drilling: the static pressure device is used to apply static pressure to the pipe body and the connecting rod, so that the pipe body and the connecting rod can be pressed into the soil in sections, and the pipe body can be pushed to the target depth in the static pressure mode with the aid of the tapered block.

[0014] S2: detection: every 0.5 meters of pushing, the sleeve is driven to slide upwards, the detection module is used to collect the soil data outside the sampling port, the detection data is uploaded to the cloud GIS platform in real time, a three-dimensional pollution distribution heat map is generated, and the sleeve is reset after detection.

[0015] S3: sampling: if the heavy metal concentration of the soil at a certain point exceeds the preset threshold value, the sampling mechanism is triggered to collect and store the soil column at this layer through the sampling port.

[0016] S4: self-cleaning: after sampling is completed, the electromagnetic valve on the gas storage tank is opened, and the sampling mechanism and the sampling port are flushed by the high-pressure gas flow sprayed through the gas outlet pipe.

[0017] The beneficial effects of the present application are as follows: by adopting the design of the static pressure device, the pipe body and the connecting rod are pushed by constant pressure, so that the soil structure is not easily damaged, the pore wall surface formed by the soil is smooth and flat, the particle size difference is small, and detection is facilitated; then by adopting the design of the detection module, the soil humidity can be detected and the interference of humidity on XRF can be corrected, so as to reduce the measurement error of heavy metals in the soil; finally, cooperating with the sleeve and the sampling mechanism, the purpose of "detection first and then collection" can be achieved, by physically sampling only the over-standard area, the number of invalid samples can be reduced, and the detection efficiency can be fundamentally improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a perspective view of the present application; Figure 2 is a structural half-section schematic view of the present application; Figure 1 is a structural half-section schematic view of the present application;Figure 3 is a schematic diagram of a partial structure of the present application Figure 2 ; Figure 4 is a schematic diagram of a tube structure of the present application Figure 5 is a schematic diagram of a partial structure of the present application Figure 4 ; Figure 6 is an enlarged view of A of the present application Figure 5 ; Figure 7 is a partial structure sectional view of the present application Figure 4 ; Figure 8 is a schematic diagram of a partial structure of the present application Figure 7 ; Figure 9 is a partial structure sectional view of the present application Figure 8 ; Figure 10 is yet another partial structure sectional view of the present application Figure 8 ; Figure 11 is a schematic diagram of a partial structure of the present application The drawings are as follows: 1, tube; 2, conical block; 3, ring block; 4, connecting rod; 5, static pressure device; 501, mounting plate; 502, static force pile press; 503, ring plate; 504, guide hole; 505, through hole; 506, air compressor; 507, ring box; 508, jet pipe; 6, sampling port; 7, sampling mechanism; 701, cylindrical block; 702, notch; 703, rotating rod; 704, first motor; 705, scraper; 706, storage mechanism; 7061, movable block; 7062, first arc-shaped groove; 7063, containing groove; 7064, driving mechanism; 70641, second motor; 70642, movable rod; 70643, driving part; 706431, U-shaped block; 706432, helical blade; 706433, ball bearing; 706434, second column groove; 70644, first column groove; 70645, prismatic block; 70646, prismatic groove; 8, sleeve; 9, driving piece; 901, strip-shaped opening; 902, hydraulic push rod; 10, fixed plate; 11, detection module; 12, gas storage tank; 13, mounting box; 14, second arc-shaped groove; 15, gas distribution box; 16, electromagnetic valve; 17, air outlet pipe; 18, air outlet hole; 19, through groove; 20, communication hole; 21, insertion rod; 22, column body; 23, first conical surface; 24, second conical surface; 25, cylindrical groove; 26, ring block; 27, third conical surface; 28, sleeve; 29, fourth conical surface; 30, movable groove; 31, spherical body; 32, ring plate; 33, compression spring; 34, ring-shaped electromagnet. DETAILED DESCRIPTION

[0019] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0020] As shown in Figures 1-11 An embodiment of the present application provides a deep soil sampler, which comprises: A pipe body 1, a conical block 2 is detachably connected to the bottom end of the pipe body 1, the conical block 2 is connected to the pipe body 1 through threads, the conical block 2 can block the pipe body 1, an annular block 3 is arranged on the outer side of the pipe body 1, the annular block 3 is located at the bottom end of the pipe body 1, and the outer diameter of the annular block 3 is greater than that of the pipe body 1 and close to the conical block 2, a plurality of connecting rods 4 are detachably connected to the top end of the pipe body 1, the plurality of connecting rods 4 are detachably connected to each other, so that the length of the pipe body 1 can be extended, and the maximum depth can be expanded to 30 meters; A static pressure device 5 is arranged on the pipe body 1 and the connecting rod 4, and is used for applying static pressure to the pipe body 1 and the connecting rod 4, so that the pipe body 1 and the connecting rod 4 can be pressed into the soil in sections, and the pipe body 1 and the connecting rod 4 are pushed forward at a constant pressure, so that the soil structure is not easily damaged, and at the same time, the soil is pushed away from the annular block 3 under the action of the conical block 2, so that when the pipe body 1 is inserted into the soil, the hole wall formed by the soil is smooth and flat, and the particle size difference is small, which is beneficial to detection; A sampling port 6 is arranged on the outer side of the pipe body 1 and above the annular block 3, and a sampling mechanism 7 is arranged in the pipe body 1 and used for sampling the soil outside the sampling port 6; A sleeve 8 is slidably arranged on the outer side of the pipe body 1, the sleeve 8 covers the sampling port 6, and the outer diameter of the sleeve 8 is smaller than that of the annular block 3, that is, the hole wall formed by the soil under the action of the annular block 3 is not easy to contact the sleeve 8, so that the frictional resistance of the sleeve 8 when moving can be reduced, and the sleeve 8 is beneficial to moving, and a driving member 9 is arranged in the pipe body 1 and used for driving the sleeve 8 to slide, when the pipe body 1 is pushed downward, the sleeve 8 can be driven by the driving member 9 to slide downward, at this time, the sleeve 8 covers the sampling port 6, so that the soil is not easy to enter the sampling port 6, and when sampling, the sleeve 8 can be driven by the driving member 9 to slide upward, so as to expose the sampling port 6; The driving member 9 comprises a strip-shaped opening 901 arranged on the outer side of the pipe body 1, a hydraulic push rod 902 is arranged in the pipe body 1, and the sleeve 8 is connected to the output end of the hydraulic push rod 902 through the strip-shaped opening 901, so that the sliding of the sleeve 8 can be controlled by the hydraulic push rod 902; The fixed plate 10 is arranged at the top end of the sampling port 6, and a detection module 11 is arranged on the fixed plate 10; the detection module 11 comprises a rhodium target X-ray tube, a silicon drift detector and a NIR sensor; the soil data outside the sampling port 6 can be collected through the detection module 11; the working principle is as follows: firstly, high-energy X-rays are emitted through the rhodium target X-ray tube, penetrate the soil surface layer, excite atoms in the soil, and make the atoms release characteristic X-ray fluorescence (XRF); then the fluorescence signals are detected through the silicon drift detector; the element composition in the soil is determined through spectrum analysis; the near-infrared light source emitted by the NIR sensor irradiates the soil surface; the reflection spectrum characteristics (water absorbs light of a specific wavelength) are analyzed; finally, the humidity interference is corrected through an AI algorithm (such as a random forest model), the measurement interference of water on heavy metals such as As, Pb, Cd and Hg in the soil in the detection range of the detection module 11 is reduced, and the measurement error is reduced; in the application, the process of “detection first and then collection” is adopted; after the pipe body 1 is pushed forward by 0.5 m, the sleeve 8 is driven to slide upward by the driving part 9, the sampling port 6 and the detection module 11 are exposed, the soil data at this position are detected through the detection module 11, and the sampling mechanism 7 can be used to physically sample only the area exceeding the standard, so that invalid samples can be reduced, and the detection efficiency can be fundamentally improved. A quantitative relationship model between XRF intensity and soil humidity is established: wherein W is humidity (%), D 50 is the median particle diameter (mm) of the smooth pore wall of the soil, and alpha and beta are experimental calibration coefficients. The sleeve 8 can improve the structural strength of the pipe body 1, so that the pipe body 1 is not easy to be damaged during pushing; in addition, when the soil is detected, the sleeve 8 can be driven to slide upward to completely expose the sampling port 6, and the soil data are detected through the detection module 11; when the soil is sampled, the sleeve 8 can be driven to slide downward slightly, as shown in Figure 7 , the sampling port 6 is exposed, and the detection module 11 is shielded, so that the detection module 11 is not polluted by the soil during sampling; Through the design of the static pressure device 5, the pipe body 1 and the connecting rod 4 are pushed forward at a constant pressure, so that the soil structure is not easily damaged, the pore wall surface formed by the soil is smooth and flat, the particle size difference is small, and the detection is facilitated; then through the design of the detection module 11, the soil humidity can be detected, and the humidity interference on XRF can be corrected, so that the measurement error of heavy metals in the soil is reduced; finally, the sleeve 8 and the sampling mechanism 7 are matched, so that the purpose of “detection first and then collection” can be achieved; by physically sampling only the area exceeding the standard, invalid samples can be reduced, and the detection efficiency can be fundamentally improved.

[0021] As Figure 5 and Figure 7As shown, in some embodiments, the sampling mechanism 7 comprises a cylindrical block 701 installed in the pipe body 1, which is in the same height with the sampling port 6 and connected with the inner wall of the pipe body 1, so as to improve the structural strength of the opening of the pipe body 1 and prevent it from being damaged during the pushing process. The fixed plate 10 is connected with the cylindrical block 701, and the bottom of the cylindrical block 701 is provided with a gap 702 communicating with the sampling port 6. A rotating rod 703 is rotatably installed in the gap 702, and the top end of the rotating rod 703 is connected with a first motor 704. The first motor 704 is installed on the cylindrical block 701, so that the rotating rod 703 can be driven to rotate by the first motor 704. The rotating rod 703 is connected with a scraper 705. The scraper 705 is shaped like Figure 7 As shown, the cylindrical surface formed by the rotation of the scraper 705 intersects with the pipe body 1, that is, when the rotating rod 703 rotates, the scraper 705 moves in the cylindrical surface. At this time, the scraper 705 can extend out of the pipe body 1 from the opening and sample the soil outside the sampling port 6. The removed soil can enter the gap 702 under the action of centrifugal force. After the sampling is completed, the scraper 705 can be rotated to a state perpendicular to the direction of the sampling port 6. At this time, the gap 702 can accommodate the scraper 705, and the scraper 705 will not interfere with the movement of the sleeve 8. The bottom of the cylindrical block 701 is provided with a storage mechanism 706. The collected soil samples can be stored separately by the storage mechanism 706, so as to collect soil samples of multiple areas.

[0022] As shown Figure 5 , Figure 6 , Figure 8 , Figure 9 and Figure 11As shown, in some embodiments, the storage mechanism 706 includes a movable block 7061 movably matched with the inner wall of the pipe body 1, the movable block 7061 is in a cylindrical shape, a first arc-shaped slot 7062 corresponding to the gap 702 is formed on the outer side of the movable block 7061, the first arc-shaped slot 7062 penetrates through the upper and lower sides of the movable block 7061 at both ends respectively, a containing slot 7063 for containing soil is formed on the top of the movable block 7061, the containing slot 7063 and the first arc-shaped slot 7062 are respectively located on both sides of the axis of the movable block 7061, a plurality of movable blocks 7061 are linearly distributed along the axis of the pipe body 1, the plurality of movable blocks 7061 are overlapped and arranged in the pipe body 1, the first arc-shaped slot 7062 on the movable block 7061 is opposite to the gap 702, the soil sample falling from the gap 702 can pass through the plurality of movable blocks 7061 through the first arc-shaped slot 7062, when sampling, one of the movable blocks 7061 can be driven to rotate one hundred and eighty degrees, the containing slot 7063 thereon is opposite to the gap 702, the falling soil sample can be contained through the containing slot 7063, then the movable block 7061 is driven to rotate one hundred and eighty degrees again, the soil sample can be sealed while the movable block 7061 is reset, the pipe body 1 is provided with a driving mechanism 7064, the plurality of movable blocks 7061 can be respectively rotated through the driving mechanism 7064, so that the containing slots 7063 on the top of the plurality of movable blocks 7061 can respectively seal the soil samples at different depths.

[0023] As Figure 5 , Figure 6 and Figure 9As shown in the drawings, in some embodiments, the driving mechanism 7064 comprises a second motor 70641 fixedly installed in the pipe body 1, the output shaft of the second motor 70641 is located on the axis of the pipe body 1, a movable rod 70642 is spline-fitted on the output shaft of the second motor 70641, and the second motor 70641 can drive the movable rod 70642 to rotate when working. The pipe body 1 is provided with a driving part 70643 which drives the movable rod 70642 to slide. The bottom end of the cylindrical block 701 is provided with a first column groove 70644, the bottom end of the movable rod 70642 movably penetrates the first column groove 70644, and a prismatic block 70645 is connected. The inner diameter of the first column groove 70644 is larger than the outer diameter of the prismatic block 70645, that is, the prismatic block 70645 can move in the first column groove 70644. The prismatic groove 70646 is fitted and penetrates the movable block 7061, the prismatic grooves 70646 on the plurality of movable blocks 7061 are located on the same axis, and the prismatic groove 70646 can accommodate the prismatic block 70645. When the movable rod 70642 is driven by the driving part 70643 to slide downward, so that the prismatic block 70645 is inserted into the prismatic groove 70646 at the top of the movable block 7061, the rotating movable rod 70642 can drive the movable block 7061 to rotate, thereby driving the movable block 7061 to rotate. When the prismatic block 70645 is accommodated by the prismatic groove 70646 of different movable blocks 7061 by driving the movable rod 70642 to slide downward by the driving part 70643, the plurality of movable blocks 7061 can be driven to rotate, respectively.

[0024] As shown in the drawings, Figure 5 , Figure 6 and Figure 9 As shown in the drawings, in some embodiments, the driving part 70643 comprises a U-shaped block 706431 connected with the inner wall of the pipe body 1, both ends of the U-shaped block 706431 are directed to the axis of the pipe body 1, the movable rod 70642 is connected with a spiral blade 706432 on the peripheral side, the U-shaped block 706431 is rollingly installed with a plurality of balls 706433 on the opposite inner wall, and is respectively rollingly overlapped with both sides of the spiral blade 706432. When the movable rod 70642 rotates, the spiral blade 706432 will roll against the balls 706433, at this time, the movable rod 70642 will be driven to slide downward. The bottom end of the prismatic block 70645 is in the shape of a tapered block 2, the bottom of the movable block 7061 is provided with a second column groove 706434 which is in communication with the bottom end of the second column groove 706434. The second column groove 706434 and the first column groove 70644 are located on the same axis and have consistent inner diameters, that is, the prismatic block 70645 can also move in the second column groove 706434, and the lengths of the prismatic block 70645, the second column groove 706434 and the prismatic groove 70646 are consistent. The tip of the prismatic block 70645 bottom is designed like a conical structure, when the prismatic block 70645 rotates and slides downward on one side, the tip will contact the edge of the six-prong slot, generating a lateral guide force, thereby driving the movable block 7061 to rotate slightly with the prismatic block 70645, so that the prismatic block 70645 can be inserted into the prismatic slot 70646 in position, it is necessary to explain that when the movable rod 70642 drives the movable block 7061 to rotate one hundred and eighty degrees, the sliding distance of the prismatic block 70645 at the end of the movable rod 70642 is the length of the prismatic slot 70646, at this time, the receiving slot 7063 is in position with the notch 702, at this time, as shown in Figure 9 , the prismatic block 70645 is completely accommodated in the prismatic slot 70646, and when the movable rod 70642 drives the movable block 7061 to continue to rotate one hundred and eighty degrees, the movable block 7061 is reset, at this time, the tip of the prismatic block 70645 is separated from the bottom of the prismatic slot 70646, the prismatic slot 70646 is accommodated in the second column slot 706434, and then the movable rod 70642 can be continuously driven to move, so that the prismatic block 70645 can enter the prismatic slot 70646 on the top of the next movable block 7061.

[0025] As shown in Figure 7 , Figure 8 and Figure 10 , in some embodiments, the top of the conical block 2 is provided with a gas storage tank 12, which stores compressed argon gas, and the top is provided with a mounting box 13, the top of the mounting box 13 is in contact with the bottom of the movable block 7061, the top of the mounting box 13 is smooth and can support multiple movable blocks 7061, cooperating with the inner wall of the pipe body 1 can limit the movement of the movable block 7061, so that it can only rotate in the pipe body 1, after the conical block 2 is disassembled, the gas storage tank 12, the mounting box 13 and the multiple movable blocks 7061 can be taken out of the pipe body 1 to take out the collected soil samples, and a second arc-shaped slot 14 is formed on the top, the second arc-shaped slot 14 is in position with the notch 702, the second arc-shaped slot 14 is provided with a gas distribution box 15, the output end of the gas storage tank 12 penetrates the gas distribution box 15 and is connected with an electromagnetic valve 16, a plurality of gas outlets 17 are distributed at the top end of the gas distribution box 15, the output end of the plurality of gas outlets 17 is lower than the movable block 7061, which will not interfere with the movement of the movable block 7061, for cleaning the attached soil samples, after the sampling of the soil samples is completed and the movable block 7061 is reset, the electromagnetic valve 16 can be opened, at this time the compressed argon gas can enter the gas distribution box 15 and be discharged from the plurality of gas outlets 17, the compressed argon gas can pass through the first arc-shaped slot 7062 on the plurality of movable blocks 7061 and enter the notch 702, bypassing the surface of the scraper 705, and then being discharged from the sampling port 6, so that the soil samples attached to the first arc-shaped slot 7062, the notch 702, the scraper 705 and the sampling port 6 can be washed.

[0026] As shown in Figure 10 and Figure 11As shown in the drawings, in some embodiments, the gas distribution box 15 is connected with the mounting box 13, the top of the mounting box 13 is provided with a gas outlet hole 18, and a plurality of through grooves 19 are respectively and correspondingly formed in the movable blocks 7061, the plurality of through grooves 19 are communicated with each other when the plurality of movable blocks 7061 are reset, and a plurality of communication holes 20 are formed in the inner wall of the accommodating groove 7063 and communicated with the through grooves 19; It should be specifically explained that the gas inlet amount of the gas distribution box 15 is greater than the gas outlet amount of the plurality of gas outlet pipes 17, so that the pressure in the gas distribution box 15 can be generated, and the compressed argon gas entering the gas distribution box 15 can enter the mounting box 13 under the action of the pressure, and then enter the accommodating grooves 7063 of the plurality of movable blocks 7061 through the through grooves 19 and the communication holes 20, at this time, the argon gas can enter the accommodating grooves 7063 and wrap the collected soil samples, so that the internal pollutants are not easy to be oxidized, and because the argon gas is heavier than air, the argon gas can exhaust the air in the accommodating grooves 7063, and after the electromagnetic valve 16 is closed, the air in the gas distribution box 15 and the mounting box 13 can be exhausted from the gas outlet pipes 17 under the action of the pressure.

[0027] As shown in the drawings, Figure 1 and Figure 2 As shown in the drawings, in some embodiments, the static pressure device 5 comprises a mounting plate 501 fixed on the ground by an anchor rod, a static pressure pile driver 502 is mounted on the top of the mounting plate 501, which is a hydraulic static pressure pile driver 502 of the prior art, a pipe body 1 or a connecting rod 4 can be applied with a static pressure greater than the friction between the pipe wall "pipe body 1 and connecting rod 4" and the soil layer and the resistance of the conical block 2 by a hydraulic cylinder, so as to press the pipe body 1 and the connecting rod 4 into the soil section by section, an annular plate 503 is connected to the bottom, in actual use, a cylindrical pit matched with the annular plate 503 can be cleaned on the soil surface in advance, and the annular plate 503 is placed in the pit, a guide hole 504 slidably matched with the pipe body 1 and the connecting rod 4 is formed in the mounting plate 501, the pipe body 1 and the connecting rod 4 can enter the annular plate 503 through the guide hole 504 and contact the soil in the annular plate 503, a plurality of perforations 505 communicated with the annular plate 503 are annularly distributed on the side of the guide hole 504, an air compressor 506 is mounted on the top of the mounting plate 501, an annular box 507 communicated with the output end of the air compressor 506 is connected to the inner wall of the annular plate 503, and the air compressor 506 can output compressed air into the annular box 507 when working, the inner side of the annular box 507 is annularly distributed with a plurality of air injection pipes 508, the compressed air can be injected from the air injection pipes 508 and discharged from the annular plate 503 through the perforations 505, in actual use, not only the pipe body 1 and the connecting rod 4 need to be pressed into the soil, but also need to be pulled out of the soil, and in the pulling process, the soil on the surface of the pipe body 1 and the connecting rod 4 can be cleaned by the compressed air injected from the air injection pipes 508, so as to facilitate the static pressure pile driver 502 to pull out the pipe body 1 and the connecting rod 4.

[0028] As shown in the drawings, Figures 2-4As shown, in some embodiments, the top of the tube body 1 and the connecting rod 4 are both provided with an insert rod 21, and the end of the insert rod 21 is constructed with a column 22, the outer diameter of the column 22 is larger than the outer diameter of the insert rod 21, and the top and bottom of the column 22 are respectively constructed with a first conical surface 23 and a second conical surface 24, and the bottom end of the connecting rod 4 is constructed with a cylindrical groove 25, and the end of the cylindrical groove 25 is connected to a ring block 26, and the insert rod 21 and the ring block 26 are plugged together, and a third conical surface 27 is constructed on the ring block 26, and a sleeve 28 is movably fitted in the cylindrical groove 25, and a fourth conical surface 29 is constructed at the bottom end of the sleeve 28, and a plurality of movable grooves 30 are annularly distributed on the fourth conical surface 29, and the sleeve 28 is annularly There are multiple balls 31 distributed, which are respectively matched with the movable grooves 30. The balls 31 can be abutted on the third conical surface 27 through the movable grooves 30. A ring plate 32 is constructed in the sleeve 28. The ring plate 32 can limit the movement of the multiple balls 31 so that they will not escape from the movable grooves 30. The insertion rod 21 moves through the inner side of the ring plate 32. A compression spring 33 is provided in the cylindrical groove 25. The end of the compression spring 33 is in contact with the ring plate 32 and overlaps. The compression spring 33 is used to provide a thrust forcing the sleeve 28 to move toward the ring block 26 so that the fourth conical surface 29 can abut on the third conical surface 27. The ball 31 is in contact with the first conical surface 23 and the second conical surface 24. When the insertion rod 2 When the ring block 26 is inserted, the column 22 is inserted into the sleeve 28. At this time, the first conical surface 23 will conflict with the multiple balls 31 and force them to conflict with the third conical surface 27. When the distance between the multiple balls 31 cannot pass through the column 22, the sleeve 28 will move toward the compression spring 33 under the interference of the column 22 and compress it. At this time, the multiple balls 31 will continue to move in the movable groove 30 and roll on the third conical surface 27 until the column 22 passes through the multiple balls 31. Then, the force exerted by the column 22 on the sleeve 28 through the balls 31 disappears, and the compression spring 33 can drive the sleeve 28 to return to its original position. At this time, the multiple balls 31 The thrust of the compression spring 33 will simultaneously conflict with the third conical surface 27 and the second conical surface 24 to form a mechanical bite, thereby limiting the movement of the column 22 and "locking" it so that it cannot move in the direction away from the cylindrical groove 25 to achieve connection. An annular electromagnet 34 is installed in the cylindrical groove 25 and is magnetically connected to the sleeve 28. When the annular electromagnet 34 is energized, it will adsorb the sleeve 28 and move it in the direction away from the ring block 26. At this time, the multiple balls 31 thereon can roll along the second conical surface 24 and move to the side of the column 22, releasing the fixation of the column 22, thereby achieving single-section quick connection and facilitating use.

[0029] The method for using the deep soil sampler includes the following steps: S1: Drilling: Static pressure is applied to the pipe body 1 and the connecting rod 4 through the static pressure device 5, and the two can be pressed into the soil section by section. With the help of the conical block 2, the pipe body 1 can be pushed to the target depth in the static pressure mode.

[0030] S2: Detection: Every 0.5 meters of advancement, the driving sleeve 8 slides upwards, and the detection module 11 collects the soil data outside the sampling port 6. The detection data is uploaded to the cloud GIS platform in real time, and a three-dimensional pollution distribution heat map is generated. After detection, the sleeve 8 is reset.

[0031] S3: Sampling: If the heavy metal concentration of a certain point exceeds the preset threshold, the sampling mechanism 7 collects and seals the soil column at this layer through the sampling port 6.

[0032] S4: Self-cleaning: After sampling is completed, the electromagnetic valve 16 on the gas storage tank 12 is opened, and the high-pressure gas flow sprayed through the gas outlet pipe 17 flushes the sampling mechanism 7 and the sampling port 6.

[0033] The above description of disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A deep soil sampler, characterized in that: include: The tube body (1) has a conical block (2) detachably connected to its bottom end, an annular block (3) is constructed on the outside of the tube body (1) and is close to the conical block (2), and a plurality of connecting rods (4) are detachably connected to the top end of the tube body (1); A static pressure device (5) is used to apply static pressure to the pipe body (1) and the connecting rod (4), so that the two can be pressed into the soil section by section; A sampling port (6) is provided on the peripheral side of the tube body (1), and a sampling mechanism (7) is provided in the tube body (1) for sampling soil outside the sampling port (6); A sleeve (8) is slidably mounted on the outside of the tube body (1), the sleeve (8) covers the sampling port (6), and its outer diameter is smaller than the outer diameter of the annular block (3); a driving member (9) is provided in the tube body (1) for driving the sleeve (8) to slide; The fixing plate (10) is arranged at the top of the sampling port (6) and is provided with a detection module (11). The detection module (11) can collect soil data outside the sampling port (6).

2. The deep soil sampler according to claim 1, characterized in that: The sampling mechanism (7) comprises a columnar block (701) installed in the tube body (1), a fixing plate (10) connected to the columnar block (701), a notch (702) communicating with the sampling port (6) configured at the bottom of the columnar block (701), a rotating rod (703) rotatably installed in the notch (702), a first motor (704) connected to the top of the rotating rod (703), a scraper (705) connected to the rotating rod (703), a cylindrical surface formed by the rotation of the scraper (705) intersecting the tube body (1), and a storage mechanism (706) provided at the bottom of the columnar block (701), through which the collected soil samples can be stored separately.

3. The deep soil sampler according to claim 1, characterized in that: The storage mechanism (706) comprises a movable block (7061) that movably cooperates with the inner wall of the tube body (1), a first arc-shaped groove (7062) corresponding to the notch (702) is provided on the outer side thereof, and a receiving groove (7063) for receiving soil is provided on the top thereof. A plurality of movable blocks (7061) are linearly distributed along the axis of the tube body (1), and a driving mechanism (7064) is provided in the tube body (1), and the plurality of movable blocks (7061) can be rotated respectively by the driving mechanism (7064).

4. The deep soil sampler according to claim 1, characterized in that: The driving mechanism (7064) includes a second motor (70641) fixedly mounted in the tube body (1); a movable rod (70642) is splined on the output shaft of the second motor (70641); a driving portion (70643) is provided in the tube body (1) for driving the movable rod (70642) to slide; a first column slot (70644) is formed at the bottom end of the columnar block (701); the bottom end of the movable rod (70642) is movable through the first column slot (70644) and is connected to a prismatic block (70645); and a prismatic slot (70646) is fitted and passed through the movable block (7061).

5. The deep soil sampler according to claim 1, characterized in that: The driving portion (70643) includes a U-shaped block (706431) connected to the inner wall of the tube body (1); a spiral blade (706432) is connected to the peripheral side of the movable rod (70642); balls (706433) are rollingly mounted on the relative inner walls of the U-shaped block (706431) and respectively roll and overlap with both sides of the spiral blade (706432); the bottom end of the prismatic block (70645) is in the shape of a conical block (2); a second column groove (706434) is opened at the bottom of the movable block (7061) and is connected to the bottom end of the second column groove (706434).

6. The deep soil sampler according to claim 1, characterized in that: The conical block (2) is provided with an air storage tank (12) on the top thereof, and a mounting box (13) is mounted on the top thereof. The top of the mounting box (13) is in contact with and overlaps the bottom of the movable block (7061), and a second arc-shaped groove (14) is cooperatively constructed thereon. An air distribution box (15) is provided in the second arc-shaped groove (14). The output end of the air storage tank (12) passes through the air distribution box (15) and is connected to a solenoid valve (16). A plurality of air outlet pipes (17) are distributed on the top of the air distribution box (15) for cleaning attached soil samples.

7. The deep soil sampler according to claim 1, characterized in that: The air distribution box (15) is connected to the installation box (13), and the top of the installation box (13) is configured with an air outlet (18). The movable blocks (7061) are each provided with a through groove (19) in a corresponding position, and the inner wall of the accommodating groove (7063) is provided with a connecting hole (20) connected to the through groove (19).

8. The deep soil sampler according to claim 1, characterized in that: The static pressure device (5) comprises a mounting plate (501), a static pile driver (502) being mounted on the top thereof, and an annular plate (503) being connected to the bottom thereof; a guide hole (504) being configured on the mounting plate (501) for sliding engagement with the pipe body (1) and the connecting rod (4); through holes (505) being distributed in an annular pattern around the guide hole (504) and communicating with the annular plate (503); an air compressor (506) being mounted on the top of the mounting plate (501); an annular box (507) being connected to the inner wall of the annular plate (503) and communicating with the output end of the air compressor (506); and an air jet pipe (508) being distributed in an annular pattern around the inner side of the annular box (507).

9. The deep soil sampler according to claim 1, characterized in that: The top ends of the tube body (1) and the connecting rod (4) are both provided with an insert rod (21), the end of the insert rod (21) is constructed with a column (22), and the top and bottom ends of the column (22) are respectively constructed with a first conical surface (23) and a second conical surface (24), the bottom end of the connecting rod (4) is constructed with a columnar groove (25), the end of the columnar groove (25) is connected to a ring block (26), the ring block (26) is constructed with a third conical surface (27), a sleeve (28) is movably fitted in the columnar groove (25), the bottom end of the sleeve (28) is constructed with a fourth conical surface (29), the fourth conical surface ( 29) is annularly distributed with a plurality of movable grooves (30), the sleeve (28) is annularly distributed with a plurality of spheres (31), which are movably matched with the movable grooves (30), the sleeve (28) is constructed with a ring plate (32), the insertion rod (21) movably passes through the inner side of the ring plate (32), a compression spring (33) is provided in the cylindrical groove (25), the end of the compression spring (33) is in contact with the ring plate (32), the spheres (31) are in contact with the first conical surface (23) and the second conical surface (24), and an annular electromagnet (34) is installed in the cylindrical groove (25) and is magnetically connected to the sleeve (28).

10. A method for using a deep soil sampler, using the deep soil sampler according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Drilling: static pressure is applied to the pipe body (1) and the connecting rod (4) through the static pressure device (5), and the two can be pressed into the soil section by section. With the help of the conical block (2), the pipe body (1) can be pushed to the target depth in a static pressure mode; S2: Detection: Every time the casing (8) is pushed forward by 0.5 meters, the casing (8) is driven to slide upwards, and the detection module (11) is used to collect soil data outside the sampling port (6). The detection data is uploaded to the cloud GIS platform in real time to generate a three-dimensional pollution distribution heat map, and the casing (8) is reset after the detection; S3: Sampling: If the heavy metal concentration in the soil at a certain point exceeds a preset threshold, the sampling mechanism (7) is triggered to collect and seal the soil column through the sampling port (6); S4: Self-cleaning: After the sampling is completed, the solenoid valve (16) on the gas storage tank (12) is opened, and the high-pressure air flow ejected through the air outlet pipe (17) flushes the sampling mechanism (7) and the sampling port (6).

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