A sampling device for on-site soil pollution investigation

Abstract

The present invention relates to the field of soil sampling technology, and discloses a sampling device for on-site soil pollution investigation, comprising a shell with one end for inserting into the soil, a sample soil channel provided in the shell, a sampling mechanism and a pull plate connected by transmission slidably provided in the shell, the top of the pull plate extending to the outside of the shell, a collection box provided in the sample soil channel, and the sampling mechanism is driven to move the sample soil toward the collection box in the process of pulling up the pull plate to sample the soil so that the sample soil is compacted and filled in the collection box. The present invention utilizes the action of pulling up the pull plate to simultaneously realize the sampling of soil and transfer the sample soil to the collection box, so as to improve the efficiency of soil sampling, and the sample soil is transferred to the collection box by compaction and filling, so that the structural layer of the sample soil is not easily damaged to ensure the accuracy of soil pollution detection.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling, and in particular to a sampling device used on-site for investigating soil pollution conditions. Background Art

[0002] With the rapid development of social economy and high-intensity human activities, the problem of soil environmental safety in my country has become increasingly prominent and has attracted widespread attention from the society. "Carrying out soil pollution investigation and understanding the status of soil environmental quality" has become the primary task of the national "Soil Pollution Prevention and Control Action Plan". Before testing soil pollution, it is necessary to use a sampling device to sample the soil on site. The effect of soil sampling will directly affect the accuracy of the test analysis results.

[0003] For example, the Chinese utility model patent with application number CN202123332061.2, publication number CN216645933U, and name “A sampler for on-site soil pollution status investigation” specifically discloses “A sampler for on-site soil pollution status investigation, including a sampler body mainly composed of a collection component, two torsion shafts, two baffles and two blocks, the torsion shaft is installed on the inner side of the collection component, the baffle is rotatably connected to the inner side of the collection component through the torsion shaft, and the block is fixedly connected to the inner side of the collection component”. When the device is in use, the fixed tube is driven by the pedal rod to pass through the receiving tube so that the discharge end and the receiving tube are inserted into the soil, so that the baffle is pushed open by the soil, and the soil enters the discharge end and the receiving tube, and then the handle is pulled to pull the discharge end out of the soil, and at the same time the torsion shaft drives the baffle to reset, and the baffle limits the baffle, keeping the baffle to close the end of the discharge end away from the receiving tube, so that the soil in the discharge end and the receiving tube is brought out by the baffle, and then the soil in the receiving tube is shaken or moved, and the soil-breaking end is inserted into the collection box, so that the sample soil falls into the collection box, thereby realizing soil sampling.

[0004] Although the sampler provided in the above patent can easily realize soil sampling, its disadvantage is that when the sample soil is dug out, the sample soil needs to be transferred to a collection box. When the sample soil is transferred to the collection box, the sampler in the prior art and the sampler in the above patent need to transfer the sample soil to the collection box through a separate transfer action after the sample soil is taken out from the soil. When the sample soil is transferred separately, it is not only easy to cause damage to the soil structure layer and cause inaccurate detection results, but also it will obviously increase the operating steps in the soil sampling process, resulting in low work efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a sampling device for on-site soil pollution investigation to solve the above-mentioned shortcomings in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sampling device for on-site soil pollution status investigation, comprising a shell at one end for inserting into the soil, a sample soil channel being arranged in the shell, a sampling mechanism and a pull plate being slidably arranged in the shell with a transmission connection, the top end of the pull plate extending to the outside of the shell, a collection box being arranged in the sample soil channel, and the sampling mechanism is driven to move the sample soil toward the collection box in the process of pulling up the pull plate to sample the soil so that the sample soil is compacted and filled in the collection box.

[0007] The above-mentioned sampling device for on-site soil pollution status investigation, the shell includes an outer shell and an inner shell with a fixed bottom and sealed connection, the bottom of the inner shell is open, and the inner cavity of the inner shell is the sample soil channel.

[0008] The sampling device for on-site soil pollution investigation mentioned above has a sliding space between the outer shell and the inner shell, and the sampling mechanism and the pull plate are slidably arranged in the sliding space;

[0009] The sampling mechanism includes a surrounding plate slidably mounted on the outer surface of the inner shell, and two symmetrical digging plates on the left and right sides are arranged on the surrounding plate through a rotating shaft. The bottoms of the opposite surfaces of the two digging plates are abutted and matched, and the opposite surfaces of the two digging plates located above the rotating shaft are elastically slidably engaged with the pulling plates respectively.

[0010] In the above-mentioned sampling device for on-site soil pollution status investigation, a first spring is connected between the enclosure and the inner shell.

[0011] The above-mentioned sampling device for on-site soil pollution status investigation, the pulling plate includes two symmetrically arranged side plates fixedly connected by a handrail rod, the bottoms of the opposite surfaces of the two side plates are fixedly provided with flat plates, the two flat plates are opened with avoidance holes, and the two avoidance holes are symmetrically fixedly installed with limit plates, the tops of the two digging plates respectively pass through the two avoidance holes, and the opposite surfaces of the two digging plates are respectively slidably engaged with the two limit plates.

[0012] The above-mentioned sampling device for on-site soil pollution status investigation, the digging plate includes a shoveling plate, a connecting plate, a thickened tube and a clamping plate which are arranged in sequence from bottom to top, the rotating shaft is rotatably inserted in the thickened tube, and the inner shell body is provided with a transverse hole for the shoveling plate to pass through and a vertical hole for the connecting plate to pass through, and the opposing surfaces of the two clamping plates are inclined surfaces inclined inwardly and are respectively slidably abutted against the two limit plates.

[0013] The above-mentioned sampling device for on-site soil pollution status investigation drives the two limit plates to move upward during the process of pulling up the pulling plate, so that the two clamping plates rotate in directions away from each other, and then the two shoveling plates rotate in directions close to each other until the opposite end faces of the two shoveling plates abut against each other, so that the opposite surfaces of the two clamping plates are clamped with the two limit plates respectively.

[0014] In the above-mentioned sampling device for on-site soil pollution status investigation, the width of the connecting plate in the front-to-back direction is smaller than the width of the shovel plate in the front-to-back direction.

[0015] The above-mentioned sampling device for on-site soil pollution status investigation has a through hole on the inner shell that passes through its front and rear sides for the collection box to pass through. The through hole cuts a part of the left and right sides of the inner shell cavity to form a accommodating area whose width in the left and right directions is greater than the width of the inner shell cavity in the left and right directions so that the collection box can be slidably limited in the accommodating area.

[0016] In the above-mentioned sampling device for on-site soil pollution investigation, a stopper plate is provided in the inner shell body through a second spring and is in sliding contact with the top of the collection box.

[0017] In the above technical scheme, the present invention provides a sampling device for on-site soil pollution status investigation, which is provided by slidingly setting a transmission-connected sampling mechanism and a pull plate in a shell, and setting a collection box in a sample soil channel in the shell. When the pull plate is pulled up, the pull plate will first drive the sampling mechanism to sample the soil to obtain sample soil. As the pull plate continues to be pulled up, the sampling mechanism will drive the sample soil to move toward the collection box so that the sample soil is compacted and filled in the collection box, thereby realizing the transfer of the sample soil. When transferring the sample soil to the collection box, it is achieved by pulling up the pull plate, and the action of pulling up the pull plate is the action of sampling the soil, so there is no need to transfer the sample soil to the collection box through an additional separate transfer action, so as to reduce the number of operating steps in the sampling process, and when the sample soil enters the collection box, it is compacted and filled, so that the structural layer of the sample soil is not easily damaged, so that the sample soil maintains a relatively complete shape, thereby ensuring the accuracy of the detection when the sample soil is detected. Compared with the prior art, the present invention utilizes the action of the upper pull plate to simultaneously achieve soil sampling and transfer of the sample soil to the collection box, thereby eliminating the action of separately transferring the sample soil to the collection box, improving the efficiency of soil sampling, and the sample soil is transferred to the collection box by means of compaction and filling, so that the structural layer of the sample soil is not easily damaged to ensure the accuracy of soil pollution detection, thereby effectively solving the shortcomings of the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the structure of a sampling device for on-site soil pollution investigation provided by an embodiment of the present invention;

[0020] Figure 2 A three-dimensional cross-sectional view of a sampling device for on-site soil pollution investigation provided by an embodiment of the present invention;

[0021] Figure 3 A cross-sectional view of the connection relationship between the housing and the abutment plate provided in an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the structure of a pull plate provided in an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the structure of one of the excavation plates provided in an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the connection structure between the pull plate and two digging plates provided in an embodiment of the present invention;

[0025] Figure 7 The embodiment of the present invention provides Figure 6 A schematic diagram of the enlarged structure of part A;

[0026] Figure 8 A schematic diagram of the connection structure between the sampling mechanism and the first spring provided in an embodiment of the present invention;

[0027] Fig. 9 A cross-sectional view of the connection relationship between the sampling mechanism and the housing provided in an embodiment of the present invention;

[0028] Fig.10 A front cross-sectional view of a sampling device for on-site soil pollution investigation in an initial state provided by an embodiment of the present invention;

[0029] Fig.11 The embodiment of the present invention provides Fig.10 A schematic diagram of the enlarged structure of part B in FIG.

[0030] Fig.12 A front cross-sectional view of a sampling device for on-site soil pollution investigation when a housing provided by an embodiment of the present invention is inserted into the soil;

[0031] Fig.13A front cross-sectional view of a sampling device used in a field survey of soil pollution when a shovel plate provided in an embodiment of the present invention completely separates sample soil from soil;

[0032] Fig.14 A front cross-sectional view of a sampling device for on-site soil pollution investigation when a sample soil provided by an embodiment of the present invention is filled into a collection box;

[0033] Fig.15 The embodiment of the present invention provides Fig.14 Schematic diagram of the enlarged structure of part C;

[0034] Fig.16 A right side cross-sectional view of a sampling device used in a field survey of soil pollution when a shovel plate provided in an embodiment of the present invention completely separates sample soil from soil;

[0035] Fig.17 The embodiment of the present invention provides Fig.16 Schematic diagram of the enlarged structure of the D part;

[0036] Fig.18 A right side cross-sectional view of a sampling device for on-site soil pollution investigation when a sample soil provided by an embodiment of the present invention is filled into a collection box;

[0037] Fig.19 A right side cross-sectional view of a sampling device for on-site soil pollution investigation after automatic replacement of a collection box provided by an embodiment of the present invention;

[0038] Fig. 20 A schematic structural diagram of a collection box provided by an embodiment of the present invention from a first perspective;

[0039] Fig.21 A schematic structural diagram of a collection box from a second viewing angle provided by an embodiment of the present invention.

[0040] Description of reference numerals:

[0041] 1. Shell; 101. Outer shell; 102. Inner shell; 1021. Vertical hole; 1022. Accommodation area; 1023. Through hole; 1024. Limit hole; 1025; 1026. Sample soil channel; 2. First box clamp; 3. Second box clamp; 4. Clamping mechanism; 401. Motherboard; 4011. Clamping slot; 402. Elastic clamping plate; 4021. Hard clamping teeth; 5. Shielding cover; 6. Auxiliary rod; 7. Pull plate; 701. Side plate; 702. Handrail; 703. Flat plate; 7 031, avoidance hole; 7032, limit plate; 8, digging plate; 801, shovel plate; 802, connecting plate; 803, clamping plate; 804, thickened tube; 9, first spring; 10, abutment plate; 11, second spring; 12, third spring; 13, enclosure; 1301, raised portion; 1302, rotating shaft; 14, collecting box; 1401, square box body; 1402, cover body; 1403, blocking plate; 15, sample soil; 16, soil; 17, push plate; 18, fourth spring. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0043] like Figure 1-21 As shown, a sampling device for on-site soil pollution status investigation provided by an embodiment of the present invention includes a shell 1 at one end for inserting into the soil, a sample soil channel 1026 is provided in the shell 1, a sampling mechanism and a pull plate 7 connected by a transmission are slidably provided in the shell 1, the top of the pull plate 7 extends to the outside of the shell 1, a collection box 14 is provided in the sample soil channel 1026, and the pull plate 7 is pulled up to drive the sampling mechanism to sample the soil 16, thereby driving the sampling mechanism to move the sample soil 15 toward the collection box 14 so that the sample soil 15 is compacted and filled in the collection box 14.

[0044] The sampling device for soil pollution status investigation site provided in this embodiment is used for sampling soil on site to obtain sample soil for detection. Among them, the words such as "left", "right", "upper", "lower" and other positional relationships involved in this embodiment are relative to the accompanying drawings. Specifically, the end of the shell 1 used for inserting into the soil is a tip, and the side of the outer surface of the shell 1 away from the tip is fixedly installed with an auxiliary rod 6 for assisting the shell 1 to insert into the soil 16. The sample soil channel 1026 is a path for the sample soil 15 to move from the soil 16 to the collection box 14. The sampling mechanism is used to take the sample soil 15 out of the soil 16 and transport the sample soil 15 taken out along the sample soil channel 1026 to the corresponding collection box 14. The pull plate 7 connected to the sampling mechanism is used to drive the sampling mechanism to sample the soil and to drive the sampling mechanism to transport the sample soil 15 to the collection box 14. The pulling action of the pull plate 7 can be operated by hand. When the pull plate 7 is pulled up, the sampling work of the sample soil 15 and the work of transferring the sample soil 15 to the collection box 14 can be realized in sequence. The working principle of the sampling device for on-site soil pollution status investigation provided by the present invention is as follows: first, by holding the auxiliary rod 6 and pressing downward, the tip of the shell 1 is inserted into the soil 16 to be sampled. During this process, the sample soil 15 gradually enters the sample soil channel 1026. When the insertion depth of the shell 1 reaches the specified position, the shell 1 is kept stationary (the shell 1 can be kept stationary by pressing the auxiliary rod 6 downward with one hand) and the pull plate 7 is pulled upward to make the pull plate 7 slide upward. During the upward sliding of the pull plate 7, the sampling mechanism is first driven to work, so that the sampling mechanism samples the soil 16, thereby obtaining the sample soil 15. Then, as the pull plate 7 continues to be pulled upward (the pulling action of the intermediate pull plate 7 does not need to be paused), the sampling mechanism will drive the sample soil 15 moves toward the collecting box 14, so that the sample soil 15 enters the collecting box 14, and then under the squeezing action of the sampling mechanism, the top of the sample soil 15 squeezes the top of the inner cavity of the collecting box 14 (the sample soil channel 1026 and the inner cavity of the collecting box 14 are both rectangular, and the length, width and height of the inner cavity of the collecting box 14 are not greater than the length, width and height of the sample soil 15, respectively), so that the sample soil 15 is compacted and filled in the collecting box 14, thereby realizing the transfer of the sample soil 15. During the whole process from the sample soil 15 being taken out to the transfer to the collecting box 14, the sample soil 15 entering the collecting box 14 is not damaged in height and its structural layer remains intact, so the detection result of the sample soil 15 will be more accurate. In the prior art, when transferring the sample soil to the collection box, it is necessary to transfer the sample soil to the collection box through a separate transfer action after the sample soil is taken out from the soil. When the sample soil is transferred separately, it is not only easy to cause damage to the soil structure layer, resulting in inaccurate test results, but also obviously increases the number of operating steps in the soil sampling process, resulting in low work efficiency.The main innovation of the present invention is that: by using one operation of soil sampling, it is possible to both sample the sample soil 15 and transfer the sample soil 15 to the collection box 14, so there is no need to perform a separate transfer operation of the sample soil 15. Moreover, during the entire process of transferring the sample soil 15 to the collection box 14, the structural layer of the sample soil 15 entering the collection box 14 remains intact, which can ensure the accuracy of soil pollution detection.

[0045] In this embodiment, a sampling mechanism and a pull plate 7 with a transmission connection are slidably arranged in the shell 1, and the collection box 14 is arranged in the sample soil channel 1026 in the shell 1. When the pull plate 7 is pulled up, the pull plate 7 will first drive the sampling mechanism to sample the soil 16 to obtain the sample soil 15. As the pull plate 7 continues to be pulled up, the sampling mechanism will drive the sample soil 15 to move toward the collection box 14 so that the sample soil 15 is compacted and filled in the collection box 14, thereby realizing the transfer of the sample soil 15. When the sample soil 15 is transferred to the collection box 14, it is achieved by pulling up the pull plate 7, and the action of pulling up the pull plate 7 is the action of sampling the soil 16, so there is no need to transfer the sample soil 15 to the collection box 14 through an additional separate transfer action, so as to reduce the number of operating steps in the sampling process. Moreover, when the sample soil 15 enters the collection box 14, it is compacted and filled, so that the structural layer of the sample soil 15 is not easily damaged, so that the sample soil 15 maintains a relatively complete shape, thereby ensuring the accuracy of the detection when the sample soil 15 is detected. Compared with the prior art, the present invention utilizes the action of the upper pull plate 7 to simultaneously realize the sampling of the soil 16 and the transfer of the sample soil 15 to the collection box 14, thereby eliminating the action of separately transferring the sample soil 15 to the collection box 14, thereby improving the efficiency of soil sampling, and the sample soil 15 is transferred to the collection box 14 by means of compaction and filling, so that the structural layer of the sample soil 15 is not easily damaged to ensure the accuracy of soil pollution detection.

[0046] In this embodiment, the shell 1 includes an outer shell 101 and an inner shell 102 whose bottoms are fixed and sealed. The bottom of the inner shell 102 is open, and the inner cavity of the inner shell 102 is a sample soil channel 1026.

[0047] Furthermore, a sliding space is provided between the outer shell 101 and the inner shell 102, and the sampling mechanism and the pull plate 7 are slidably provided in the sliding space;

[0048] Among them, the sampling mechanism includes a surrounding plate 13 slidably sleeved on the outer surface of the inner shell 102, and two symmetrical digging plates 8 are rotatably arranged on the surrounding plate 13 through a rotating shaft 1302. A protrusion 1301 is respectively arranged on the left and right sides of the surrounding plate 13, and the two protrusions 1301 are respectively rotatably connected to the two rotating shafts 1302. The bottoms of the opposite surfaces of the two digging plates 8 are abutted and matched, and the opposite surfaces of the two digging plates 8 located above the rotating shaft 1302 are respectively elastically slidably engaged with the pulling plate 7. The sides of the two digging plates 8 that are away from each other are connected to the pulling plate 7 through a third spring 12. One end of the third spring 12 is fixedly connected to the digging plate 8, and the other end is slidably abutted with the pulling plate 7. The enclosure 13 is in the shape of a Chinese character "U". The outer surface of the inner shell 102 is in the shape of a rectangular parallelepiped. The inner walls of the enclosure 13 are respectively slidably fitted with the outer walls of the inner shell 102. The rotation design of the two digging plates 8 and the enclosure 13 and the opposite surfaces of the two digging plates 8 above the rotating shaft 1302 are elastically slidably engaged with the pulling plate 7, so that in the initial state, the bottoms of the opposite surfaces of the two digging plates 8 do not abut, and the distance between the bottoms of the opposite surfaces of the two digging plates 8 is not less than the width of the inner shell 102 in the left and right directions. At this time, when the shell 1 is inserted into the soil 16, the sample soil 15 can pass between the bottoms of the two digging plates 8 along the inner wall of the sample soil channel 1026. Then, when an upward pulling force is applied to the pulling plate 7, the pulling plate 7 is used to slide and abut against the opposite surfaces of the two digging plates 8 above the rotating shaft 1302. The pulling plate 7 can respectively drive the tops of the two digging plates 8 to rotate outward, and then under the action of the rotating shaft 1302, the bottoms of the two digging plates 8 rotate in a direction close to each other to gradually separate the sample soil 15 and the soil 16. When the relative end surfaces of the bottoms of the two digging plates 8 abut, the sample soil 15 and the soil 16 are completely separated. At this time, the two digging plates 8 cannot continue to rotate to allow the pulling plate 7 to be clamped with the two digging plates 8. Thereafter, after continuing to pull the pulling plate 7, the pulling plate 7 drives the two digging plates 8 and the surrounding plate 13 to move upward synchronously along the outer surface of the inner shell 102. The upward movement of the two digging plates 8 drives the sample soil 15 to move upward synchronously. The collecting box 14 is located directly above the sample soil 15 until the sample soil 15 enters the collecting box 14, thereby realizing the transfer of the sample soil 15.

[0049] As a further improvement, a first spring 9 is connected between the enclosure 13 and the inner shell 102, one end of the first spring 9 is fixedly connected to the enclosure 13, and the other end is fixedly connected to the inner shell 102. The first spring 9 is divided into two groups, and the two groups of first springs 9 are respectively located on the left and right sides of the inner shell 102 to balance the force on the enclosure 13. The number of first springs 9 in each group can be one or more. The elastic force of the first spring 9 can generate resistance to the enclosure 13 sliding upward. The functions of the first spring 9 are: first, by utilizing its elastic force, the enclosure 13 will not move upward in the early stage of the upper pull plate 7, thereby causing the two excavation plates 8 to rotate to achieve sampling of the sample soil 15. After the relative end faces of the bottom of the two excavation plates 8 are abutted, the upward pulling force of the upper pull plate 7 can overcome the elastic force of the first spring 9, thereby causing the enclosure 13 and the two excavation plates 8 to move upward; second, by utilizing the elastic force of the first spring 9, after the upward pulling force of the pull plate 7 is removed, the enclosure 13 can be moved down and reset to its initial state.

[0050] At the same time, the elastic force of the two third springs 12 is used to make the two digging plates 8 return to their initial state after the enclosure plate 13 is moved downward and reset to the initial state. The elastic force of the third spring 12 is smaller than the elastic force of the first spring 9, so that when the pull plate 7 is pulled up, the two digging plates 8 rotate first and then move upward.

[0051] In this embodiment, the pulling plate 7 includes two symmetrically arranged side plates 701 fixedly connected by a handrail rod 702. When the pulling plate 7 is pulled up, it can be achieved by pulling up the handrail rod 702. Flat plates 703 are fixedly arranged at the bottom of the opposite surfaces of the two side plates 701. Avoidance holes 7031 are opened on the two flat plates 703. Limiting plates 7032 are symmetrically fixedly installed in the two avoidance holes 7031. The tops of the two excavating plates 8 pass through the two avoidance holes 7031 respectively, and the opposite surfaces of the two excavating plates 8 are respectively slidably engaged with the two limiting plates 7032. The end faces of the limiting plates 7032 and the excavating plates 8 where they are slidably engaged are arc-shaped to reduce the sliding friction between the excavating plates 8.

[0052] In this embodiment, the digging plate 8 includes a shoveling plate 801, a connecting plate 802, a thickened tube 804 and a clamping plate 803 which are arranged in sequence from bottom to top. The rotating shaft 1302 is rotatably inserted in the thickened tube 804 to strengthen the connection between the digging plate 8 and the enclosure 13. The opposite end faces of the two shoveling plates 801 are the opposite end faces of the bottom of the two digging plates 8. The two shoveling plates 801 are used to separate the sample soil 15 from the soil 16. The inner shell 102 is provided with a shoveling plate 801. 01 through the transverse hole 1025 and the vertical hole 1021 for the connecting plate 802 to pass through, so that when the two digging plates 8 rotate, the two shoveling plates 801 can enter the sample soil channel 1026 respectively to separate the sample soil 15 from the soil 16, and the opposite surfaces of the two clamping plates 803 are inclined surfaces inclined inward and are respectively slidably abutted against the two limit plates 7032 so that when the pull plate 7 is pulled up, the two clamping plates 803 can be driven to rotate in directions away from each other;

[0053] The above structure can be used to realize that, in the process of pulling the upper pull plate 7, the two limit plates 7032 are driven to move upward so that the two clamping plates 803 are rotated in the directions away from each other, and then the two shoveling plates 801 are rotated in the directions close to each other until the relative end faces of the two shoveling plates 801 abut against each other so that the relative surfaces of the two clamping plates 803 are clamped with the two limit plates 7032 respectively. Because the relative end faces of the two shoveling plates 801 abut against each other, the two digging plates 8 cannot continue to rotate. The inclined setting of the relative surfaces of the two clamping plates 803 makes the two clamping plates 803 clamp the two limit plates 7032, thereby realizing the clamping between the upper pulling plate 7 and the digging plate 8. At this time, continuing to pull the upper pull plate 7 can drive the two digging plates 8 to move upward, and the upward movement of the two digging plates 8 can drive the enclosure 13 and the sample soil 15 to move upward.

[0054] In this embodiment, the width of the connecting plate 802 in the front-to-back direction is smaller than the width of the shoveling plate 801 in the front-to-back direction, the width of the transverse hole 1025 in the front-to-back direction is adapted to the width of the shoveling plate 801 in the front-to-back direction, and the width of the vertical hole 1021 in the front-to-back direction is adapted to the width of the connecting plate 802 in the front-to-back direction, so that the width of the vertical hole 1021 in the front-to-back direction is smaller, so that the sample soil 15 is not easy to flow out through the vertical hole 1021 when moving upward along the sample soil channel 1026; at the same time, the front and rear side surfaces of the shoveling plate 801 are respectively slidably abutted against the front and rear side surfaces of the sample soil channel 1026, so that the sample soil 15 will not flow out from between the two shoveling plates 801 and the sample soil channel 1026 when moving upward along the sample soil channel 1026; the relative end faces of the two shoveling plates 801 are completely fitted when abutting, so that the sample soil 15 will not flow out from between the two shoveling plates 801 when moving upward along the sample soil channel 1026.

[0055] In this embodiment, a through hole 1023 is provided on the inner shell body 102, which passes through the front and rear sides thereof for the collection box 14 to pass through. The through hole 1023 cuts a portion of the left and right sides of the inner cavity of the inner shell body 102 to form a accommodating area 1022 whose width in the left and right directions is greater than the width of the inner cavity of the inner shell body 102 in the left and right directions, so that the collection box 14 can be slidably limited in the accommodating area 1022. The bottom surface of the collection box 14 is slidably abutted against the bottom surface of the accommodating area 1022, so that the bottom surface of the accommodating area 1022 limits the collection box 14 so that the collection box 14 does not move downward. Because the collection box 14 is slidably connected to the accommodating area 1022, the collection box 14 can be taken out from the accommodating area 1022 through the through hole 1023.

[0056] In this embodiment, the vertical length of the accommodating area 1022 is greater than the vertical length of the collecting box 14 so that the collecting box 14 can slide upward in the vertical direction. A retaining plate 10 that slides against the top of the collecting box 14 is provided in the inner shell 102 through the sliding of the second spring 11. The elastic force of the second spring 11 can be used to squeeze the retaining plate 10 against the collecting box 14, thereby ensuring the stability of the collecting box 14 in the accommodating area 1022.

[0057] Furthermore, a limiting hole 1024 is provided on the inner shell body 102 and passes through the left and right sides thereof. The left and right ends of the abutment plate 10 respectively extend through the limiting holes 1024 to the outside of the sample soil channel 1026. The bottom surface of the abutment plate 10 abuts against the bottom surface of the limiting hole 1024, and the front and rear sides of the abutment plate 10 respectively slide and abut against the front and rear sides of the limiting hole 1024, so that when the collection box 14 slides out of the accommodating area 1022, the abutment plate 10 will not shake.

[0058] In this embodiment, the collecting box 14 includes a square box body 1401 with both the bottom and the top open. The top of the square box body 1401 is connected to a cover body 1402 by countersunk screws. Two symmetrically arranged blocking plates 1403 are installed at the bottom of the inner cavity of the square box body 1401. The ends of the two blocking plates 1403 that are away from each other are elastically rotatably connected to the square box body 1401 by a torsion spring (not shown in the figure) (the elastic rotation setting of the blocking plates 1403 is a prior art and will not be described in detail). The front and rear sides of the two blocking plates 1403 are respectively connected to the square box body 14 01 is slidably abutted against the inner wall of the square box body 1401. In the initial state, the opposite end faces of the two sealing plates 1403 are abutted. When the sample soil 15 moves toward the collecting box 14, the two sealing plates 1403 on the top of the sample soil 15 abut against each other and rotate toward the inside of the square box body 1401 respectively. When the sample soil 15 is compressed and filled into the inner cavity of the square box body 1401, the sample soil 15 stops moving up. At this time, the two sealing plates 1403 are reset under the elastic force of the torsion spring so that the sample soil 15 is located in the collecting box 14 and will not flow out.

[0059] Among them, two abutment blocks (not shown in the figure) corresponding to the two sealing plates 1403 are fixedly installed on the inner wall of the square box body 1401. In the initial state, the abutment blocks abut against the top surfaces of the sealing plates 1403 so that the two sealing plates 1403 will not rotate toward the outside of the square box body 1401, thereby keeping the sample soil 15 stably located in the collection box 14.

[0060] By using the cover body 1402 connected to the top of the square box body 1401 by countersunk screws, the cover body 1402 can be removed from the square box body 1401, thereby facilitating the removal of the sample soil 15 from the collection box 14.

[0061] In this embodiment, a first box clamp 2 for accommodating a collection box 14 that is not filled with sample soil 15 and a second box clamp 3 for accommodating a collection box 14 that is filled with sample soil 15 are detachably mounted on the outer shell 101 through a snap-fit ​​mechanism 4. The opposite end surfaces of the first box clamp 2 and the second box clamp 3 are open. The outer shell 101 is provided with a first opening and a second opening for the first box clamp 2 and the second box clamp 3 to slide through, respectively. The first box clamp 2 and the second box clamp 3 are connected to the through hole 1023 after passing through the first opening and the second opening, respectively. The length of the first box clamp 2 in the height direction and the length of the second box clamp 3 in the height direction are both matched with the length of the collection box 14 in the height direction. The collection box 14 is slidably connected to the inner cavity of the first box clamp 2 and the inner cavity of the second box clamp 3. A fourth spring 18 is connected in between, one end of the fourth spring 18 is fixedly connected to the inner wall of the first box clamp 2, and the other end is fixedly connected to a push plate 17, the side of the push plate 17 fits with the side of the collecting box 14, and the first box clamp 2 contains a plurality of collecting boxes 14 arranged in a straight line. Under the elastic force of the fourth spring 18, the push plate 17 exerts a force on the plurality of collecting boxes 14 pointing in the direction of the second box clamp 3, and the bottom height of the second box clamp 3 is higher than the bottom height of the first box clamp 2, so that the side of the collecting box 14 close to the second box clamp 3 abuts against the end face of the second box clamp 3, thereby realizing the limiting of the collecting box 14, so that the collecting box 14 close to the second box clamp 3 is located in the accommodating area 1022, so that the collecting box 14 located in the accommodating area 1022 can collect the upwardly moved sample soil 15.

[0062] Through the design of the above structure, after the upwardly moved sample soil 15 fills the collecting box 14, continuing to pull the pull plate 7 can make the sample soil 15 drive the collecting box 14 to move upward so that the second spring 11 is compressed. When the bottom height of the collecting box 14 is equal to the internal height of the inner cavity of the second box clamp 3, the elastic force of the fourth spring 18 will push multiple collecting boxes 14 to slide in the direction of the second box clamp 3, thereby pushing the collecting box 14 filled with the sample soil 15 into the inner cavity of the second box clamp 3, and the collecting box 14 behind the collecting box 14 filled with the sample soil 15 will slide back into the accommodating area 1022 to wait for the next collection of the sample soil 15. It can be seen that through the design of the above mechanism, the automatic replacement of the collecting box 14 can also be realized by utilizing the action of the upper pull plate 7, so that the sampling device can perform multiple samplings continuously. Multiple sampling can improve the accuracy of soil pollution detection. Since there is no need to replace the collecting box 14 separately when performing multiple samplings, the working efficiency of multiple sampling can be greatly improved.

[0063] In this embodiment, the clamping mechanism 4 includes a motherboard 401 fixedly connected to the outer surface of the outer shell 1 and an elastic clamping plate 402 fixedly connected to the outer surface of the second box clamp 3 (in this embodiment, the structure of the clamping mechanism 4 is described as the clamping mechanism 4 connected to the second box clamp 3), and a gap is provided between the elastic clamping plate 402 and the outer surface of the second box clamp 3 so that the elastic clamping plate 402 can be deformed toward the direction of the second box clamp 3 when subjected to an external force, and the free end of the elastic clamping plate 402 is fixedly installed with The motherboard 401 is provided with a slot 4011 that is engaged with the hard latch 4021. When the hard latch 4021 is engaged in the slot 4011, the second box clamp 3 can be connected to the outer shell 1. When the elastic clamp 402 is pressed in the direction of the second box clamp 3, the hard latch 4021 can be disengaged from the slot 4011, so that the second box clamp 3 can be removed from the outer shell 101, and the collection box 14 filled with the sample soil 15 can be taken out from the second box clamp 3. The number of the latching mechanisms 4 set between the second box clamp 3 and the first box clamp 2 and the outer shell 101 is two, and they are symmetrically arranged in the vertical direction. The structure of the latching mechanism 4 connected to the first box clamp 2 and the latching mechanism 4 connected to the second box clamp 3 is the same, and it will not be repeated.

[0064] In this embodiment, the top of the outer shell 101 is open. When soil falls into the sliding space provided between the outer shell 101 and the inner shell 102, the soil can be poured out from the sliding space. A shielding cover 5 is detachably installed on the top of the outer shell 101 by means of countersunk screws. The shielding cover 5 is used to prevent external debris from falling into the sliding space. Two insertion holes corresponding to the two side panels 701 are provided on the shielding cover 5. The side panels 701 are slidably plugged into the insertion holes. The shielding cover 5 can be used to improve the stability of the up and down movement of the pull plate 7.

[0065] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A sampling device for use in a soil pollution investigation site, comprising a housing (1) having one end for inserting into soil (16), wherein a sample soil channel (1026) is provided in the housing (1), characterized in that: A sampling mechanism and a pull plate (7) connected in a transmission manner are slidably arranged in the shell (1), the top end of the pull plate (7) extends to the outside of the shell (1), and a collection box (14) is arranged in the sample soil channel (1026). When the pull plate (7) is pulled upward to drive the sampling mechanism to sample the soil (16), the sampling mechanism is driven to move the sample soil (15) toward the collection box (14) so ​​that the sample soil (15) is compacted and filled in the collection box (14); The housing (1) comprises an outer housing (101) and an inner housing (102) whose bottoms are fixed and sealed, the bottom of the inner housing (102) being open, and the inner cavity of the inner housing (102) being the sample soil channel (1026); A sliding space is provided between the outer shell (101) and the inner shell (102), and the sampling mechanism and the pull plate (7) are slidably arranged in the sliding space; The sampling mechanism comprises a surrounding plate (13) slidably sleeved on the outer surface of the inner shell (102), and two digging plates (8) symmetrically arranged on the left and right sides of the surrounding plate (13) are rotatably arranged via a rotating shaft (1302), the bottoms of the opposite surfaces of the two digging plates (8) are abutted and matched, and the opposite surfaces of the two digging plates (8) located above the rotating shaft (1302) are elastically slidably engaged with the pulling plate (7) respectively; A first spring (9) is connected between the enclosure plate (13) and the inner shell (102); The pulling plate (7) comprises two symmetrically arranged side plates (701) fixedly connected by a handrail (702), the bottoms of the opposite surfaces of the two side plates (701) are fixedly provided with flat plates (703), the two flat plates (703) are provided with avoidance holes (7031), and the two avoidance holes (7031) are symmetrically fixedly installed with limit plates (7032), the tops of the two digging plates (8) respectively pass through the two avoidance holes (7031), and the opposite surfaces of the two digging plates (8) are respectively slidably engaged with the two limit plates (7032); The digging plate (8) comprises a shoveling plate (801), a connecting plate (802), a thickened tube (804) and a clamping plate (803) which are arranged in sequence from bottom to top. The rotating shaft (1302) is rotatably inserted into the thickened tube (804). The inner shell (102) is provided with a transverse hole (1025) for the shoveling plate (801) to pass through and a vertical hole (1021) for the connecting plate (802) to pass through. The opposing surfaces of the two clamping plates (803) are oriented in a direction opposite to each other. The inner inclined surface is slidably abutted against the two limit plates (7032) respectively; in the process of pulling the pulling plate (7), the two limit plates (7032) are driven to move upward so that the two clamping plates (803) are rotated in directions away from each other, thereby causing the two shoveling plates (801) to rotate in directions close to each other until the opposite end surfaces of the two shoveling plates (801) are abutted so that the opposite surfaces of the two clamping plates (803) are clamped with the two limit plates (7032) respectively; The inner shell (102) is provided with a through hole (1023) penetrating through the front and rear sides thereof for the collection box (14) to pass through; the through hole (1023) cuts a portion of the left and right sides of the inner cavity of the inner shell (102) to form a receiving area (1022) whose width in the left-right direction is greater than the width in the left-right direction of the inner cavity of the inner shell (102) so that the collection box (14) is slidably limited in the receiving area (1022); a stop plate (10) is slidably provided in the inner shell (102) through a second spring (11) and is in slidable contact with the top of the collection box (14); A first box clamp (2) for accommodating a collection box (14) not filled with sample soil (15) and a second box clamp (3) for accommodating a collection box (14) filled with sample soil (15) are detachably mounted on the outer shell (101) via a snap-fit ​​mechanism (4); the opposite end faces of the first box clamp (2) and the second box clamp (3) are open; the outer shell (101) is provided with a first opening and a second opening for the first box clamp (2) and the second box clamp (3) to slide through respectively; the first box clamp (2) and the second box clamp (3) are connected to the through hole (1023) after passing through the first opening and the second opening respectively; the length of the first box clamp (2) in the height direction and the length of the second box clamp (3) in the height direction are both adapted to the length of the collection box (14) in the height direction; the collection box (14) and the first box clamp (2) are connected to each other in the same manner; The inner cavity of the box clamp (2) and the inner cavity of the second box clamp (3) are both slidably connected. A fourth spring (18) is connected between the first box clamp (2) and the collection box (14). One end of the fourth spring (18) is fixedly connected to the inner wall of the first box clamp (2), and the other end is fixedly connected to a push plate (17). The side surface of the push plate (17) is in contact with the side surface of the collection box (14). The first box clamp (2) contains a plurality of collection boxes (14) arranged in a straight line. Under the elastic force of the fourth spring (18), the push plate (17) exerts a force on the plurality of collection boxes (14) pointing in the direction of the second box clamp (3). The bottom height of the second box clamp (3) is higher than the bottom height of the first box clamp (2), so that the side surface of the collection box (14) close to the second box clamp (3) abuts against the end surface of the second box clamp (3).

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