Soil detection device for saline-alkali land treatment

Abstract

The invention discloses a soil detection device for saline-alkali land treatment, and particularly relates to the technical field of testing and sampling, the soil detection device comprises a drilling barrel, a telescopic cylinder and a spiral soil sampling drill, the top of the drilling barrel is provided with a sampling port communicated with the interior of the drilling barrel, and a sampling and detecting assembly is arranged between the drilling barrel and the spiral soil sampling drill; the sampling and detecting assembly comprises a sampling and detecting cylinder rotationally connected in the drilling cylinder, and a second friction thread and a first friction thread which are symmetrically and fixedly connected in the sampling and detecting cylinder, and rotating friction is kept between the second friction thread and the spiral soil sampling drill; through the arrangement of the spiral soil sampling drill and the second friction thread, the dynamic effects of rotary lifting and reverse friction are achieved in the process that soil is taken out, the soil sampling device is used for achieving reverse shear force on soil blocks and used for tearing the soil, components in the soil can be evenly distributed in a sample, and the soil sampling efficiency is improved. Detection value fluctuation caused by local caking is avoided, and the reliability of detection data is ensured.

Description

Technical Field

[0001] This invention relates to the field of testing and sampling technology, and specifically to a soil testing device for saline-alkali land remediation. Background Technology

[0002] Saline-alkali soil refers to soil containing excessive soluble salts (salinized soil) or alkaline substances (alkalized soil), or both (saline-alkali soil). When the content of soluble salts (such as sodium chloride and sodium sulfate) in the soil is too high, typically exceeding 0.6% (arid regions) or 1.0% (humid regions) in the surface soil, the salts draw water from plant roots through osmotic pressure, leading to "physiological drought," leaf wilting, and stunted growth. Therefore, soil testing devices are needed to address the specific problems of saline-alkali soil, preventing inefficient or secondary damage from indiscriminate measures. Because salts in saline-alkali soil tend to accumulate on the surface... If only surface soil or samples are taken at a uniform depth, the impact of deeper salts on crops will be missed (e.g., high salinity in deeper soil layers hinders root water absorption). Therefore, a soil sampling auger is needed to perform stratified soil sampling while maintaining a uniform sampling depth. However, when sampling soil, saline-alkali soils, due to their high salt and alkalinity, tend to form dense clumps or hard salt crusts. Simultaneously, alkalized soils can become compacted due to colloidal dispersion, forming large soil clumps. These characteristics mean that soil samples are often extracted in whole sections, resulting in the presence of large, unmixed clumps of soil and incomplete mixing of salt crusts with other soil components. This leads to poor sampling results and affects the accuracy of soil testing. Summary of the Invention

[0003] The purpose of this invention is to provide a soil testing device for saline-alkali land remediation, in order to overcome the above-mentioned shortcomings in the technology.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a soil testing device for saline-alkali land remediation, comprising a drill cylinder, a telescopic cylinder, and a spiral soil sampling drill. The top of the drill cylinder has a sampling port communicating with its interior. A sampling component is provided between the drill cylinder and the spiral soil sampling drill. The sampling component includes a sampling tube rotatably connected inside the drill cylinder and a second friction thread and a first friction thread symmetrically fixedly connected inside the sampling tube. The second friction thread and the second friction thread maintain rotational friction with the spiral soil sampling drill. A forward and reverse, and idling components are provided between the drill cylinder and the sampling tube. A transverse pusher assembly is provided between the drill cylinder and the sampling port to push the soil at the top of the spiral soil sampling drill. A stabilizing component is provided between the drill cylinder and the sampling port to empty the soil inside the transverse pusher assembly.

[0005] Preferably, the positive air assembly includes a bevel gear rotatably connected inside the drill barrel, and the bevel gear is fixedly sleeved on the outside of the sampling cylinder. A double-ended gear is movably connected to the outside of the drill barrel, and one end of the double-ended gear is located between the sampling cylinder and the drill barrel and meshes with the bevel gear. A bracket is fixedly connected to the outside of the drill barrel. A second half gear that meshes with the double-ended gear is rotatably connected to the side of the bracket near the drill barrel. A first half gear that meshes with the double-ended gear is fixedly connected to the middle of the second half gear. A first servo motor is fixedly connected to one end of the bracket, and the first servo motor is used to drive the first half gear and the second half gear to rotate synchronously.

[0006] Preferably, the transverse push assembly includes a standing frame fixedly connected to the outside of the drill barrel, an directional rod is rotatably connected to the top of the drill barrel, one end of the directional rod passes through the sampling port and is rotatably connected to one side of the standing frame, a tearing ring is fixedly connected inside the sampling port, and a tearing ring is fixedly sleeved on the outside of the directional rod, with the tearing ring located inside the tearing ring.

[0007] Preferably, one end of the tearing ring is fixedly connected to a crushing mill base, and the crushing mill base and the tearing ring and tearing ring maintain a structure with a wide opening and a narrow middle. Two symmetrical push blades are fixedly connected to the outside of the directional rod, and the two push blades are staggered on the outside of the directional rod.

[0008] Preferably, the cup receiving assembly includes two supports symmetrically fixedly connected to one side of the upright frame, and a cup receiving collar is installed between the two supports. The cup receiving collar has a plurality of abutment arc frames installed inside, and the top of the abutment arc frames is provided with an arc-shaped structure. A flipping component for connection is provided between the cup receiving collar and the support.

[0009] Preferably, the cup receiving collar has an arc groove inside for the movement of the abutment arc frame, a contact post is installed inside the arc groove, a concentric groove is provided on one side of the abutment arc frame for the movement of the contact post, and a return spring is connected between the contact post and the concentric groove.

[0010] Preferably, the flipping assembly includes a threaded hole on one side of one of the brackets, a limiting post connecting the other bracket and the cup receiving collar, a threaded groove on the outside of the cup receiving collar, and an adjusting bolt screwed onto one side of one of the brackets, with the adjusting bolt being screwed into the threaded groove corresponding to the threaded hole through the threaded hole.

[0011] Preferably, the stabilizing component is externally fixedly connected to a flow divider box, and an annular guide groove is provided between the drill barrel, the sampling port, and the flow divider box. The sampling port is internally equipped with a first air outlet pipe and a second air outlet pipe that cooperate with the annular guide groove. The first air outlet pipe and the second air outlet pipe are of different lengths inside the sampling port. The flow divider box is externally fixedly connected to a blower that communicates with its interior, and the flow divider box and the annular guide groove guide the airflow generated inside it into the first air outlet pipe and the second air outlet pipe.

[0012] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0013] 1. The present invention, through the setting of a spiral soil sampling drill, a sampling cylinder, a first friction thread and a second friction thread, enables the soil to achieve a dynamic effect of rotational lifting and reverse friction during the extraction process. When the soil slides relative to the first friction thread and the second friction thread, friction is generated, which will form a barrier on the soil and exert a reverse shear force on the soil clods. This is used to tear the soil, so that the components in the soil can be evenly distributed in the sample, avoiding fluctuations in the detection value caused by local agglomeration and ensuring the reliability of the detection data.

[0014] 2. The present invention, through the setting of the sampling cylinder, the first friction thread and the second friction thread, and the first friction thread and the second friction thread maintaining opposite states inside the sampling cylinder, makes the relative movement direction of the sampling cylinder and the spiral soil sampling drill alternately change, generating alternating opposite shear force and extrusion force. This bidirectional force can break the directional stress of the soil, causing the salt crust and heavy clay clods to be torn repeatedly, improving the uniformity of the sample and enhancing the repeatability of the test.

[0015] 3. The present invention, through the arrangement of the first half gear, the second half gear, the double-headed gear and the sampling cylinder, can achieve the forward and reverse rotation of the sampling cylinder along the outside of the spiral soil sampling drill. This is used to change the centrifugal force and impact force generated by the sudden change in the direction of the spiral soil sampling drill, so that the adhering soil is detached from the cylinder wall. In the reverse rotation, the soil inside the cylinder maintains its original direction of movement due to inertia, forming intense friction and collision with the cylinder wall, thereby getting rid of the adhesion. This self-cleaning effect can maintain the unobstructed flow of the grinding area and ensure the stability of the continuous sampling process.

[0016] 4. This invention, through the arrangement of a spiral soil sampling drill, a crushing grinding base, a tearing ring, and a directional rod, can sample and test soil at different depths. Furthermore, the spiral soil sampling drill can complete multiple sampling operations while maintaining vertical sampling. Especially for saline-alkali soils where salt has surface aggregation characteristics, the large clumps of deep soil can be evenly torn apart and dispersed during sampling, ensuring sufficient uniformity of the soil sample and thus ensuring the accuracy of the detection of vertical soil stratification information.

[0017] 5. The present invention, through the setting of the directional rod and the pusher blade, can push the soil sample accumulated near the sampling port, prevent the soil from blocking the sampling port, accelerate the rapid collection of soil samples, and reduce the time required for soil testing.

[0018] 6. The present invention, through the arrangement of the receiving cup assembly, drill cylinder, sampling port and sampling cup, makes the sampling cup and the sampling port outlet fit tightly together to form a closed conveying channel. After the soil is discharged from the sampling port, it falls directly into the cup with almost no spillage. This can ensure that the sample amount at each sampling point is accurate and meet the standard, and avoid repeated sampling due to spillage.

[0019] 7. This invention, through the arrangement of the stabilizing component, tearing ring, and tearing ring, ensures that as airflow continuously enters the first and second air outlets, the two outlets blow the internal airflow towards the tearing ring, tearing ring, and the vicinity of the crushing mill base for purging. Ultimately, this cleans up the soil samples remaining between the tearing ring, tearing ring, and crushing mill base, reducing the amount of soil sample residue from the previous sampling port. This ensures that each sample layer contains only soil from the current depth, guaranteeing that the test data accurately represents the salinization characteristics of that layer and providing a reliable basis for subsequent soil stratification remediation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of the drill barrel of the present invention;

[0022] Figure 2 This is a schematic diagram of the assembly of the inspection tube and the drill tube of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the second friction thread of the present invention;

[0024] Figure 4 This is a schematic diagram of the assembly of the bevel gear and the sampling cylinder of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the transverse pusher assembly of the present invention;

[0026] Figure 6 This is a schematic diagram of the tear ring structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the stabilization component of the present invention;

[0028] Figure 8This is a schematic diagram of the cup-receiving collar of the present invention;

[0029] Figure 9 This is a schematic diagram of the structure of the contact arc frame of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Drill barrel; 11. Telescopic cylinder; 12. Spiral soil sampling drill; 13. Sampling port;

[0032] 2. Inspection assembly; 21. Inspection cylinder; 22. First friction thread; 23. Second friction thread; 24. Double-ended gear; 25. Bevel gear; 26. Bracket; 27. First half gear; 28. Second half gear; 29. ​​First servo motor;

[0033] 3. Horizontal pusher assembly; 31. Tear ring; 32. Tear ring; 33. Crusher base; 34. Directional rod; 35. Push blade; 36. Second servo motor; 37. Vertical support frame;

[0034] 4. Stabilizing assembly; 41. Circular guide groove; 42. First air outlet pipe; 43. Second air outlet pipe; 44. Diverter box; 45. Blower;

[0035] 5. Cup receiving assembly; 51. Bracket; 52. Cup receiving collar; 53. Abutment arc frame; 54. Arc groove; 55. Concentric groove; 56. Return spring; 57. Contact post;

[0036] 6. Flip assembly; 61. Threaded hole; 62. Adjusting bolt; 63. Restricting post; 64. Threaded groove. Detailed Implementation

[0037] 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.

[0038] This invention provides, for example Figure 1 , Figure 2 , Figure 3 and Figure 4 The soil testing device for saline-alkali land treatment shown includes a drill cylinder 1, a telescopic cylinder 11, and a spiral soil sampling drill 12. The top of the drill cylinder 1 is provided with a sampling port 13 communicating with its interior. A sampling component 2 is provided between the drill cylinder 1 and the spiral soil sampling drill 12. The sampling component 2 includes a sampling tube 21 rotatably connected inside the drill cylinder 1 and a second friction thread 23 and a first friction thread 22 symmetrically fixedly connected inside the sampling tube 21. The second friction thread 23 and the second friction thread 23 maintain rotational friction with the spiral soil sampling drill 12. A positive and negative and idling positive and negative components are provided between the drill cylinder 1 and the sampling tube 21.

[0039] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the positive air assembly includes a bevel gear 25 rotatably connected inside the drill barrel 1, and the bevel gear 25 is fixedly sleeved on the outside of the sampling cylinder 21. A double-ended gear 24 is movably connected to the outside of the drill barrel 1, and one end of the double-ended gear 24 is located between the sampling cylinder 21 and the drill barrel 1 and is engaged with the bevel gear 25. A bracket 26 is fixedly connected to the outside of the drill barrel 1. A second half gear 28 that meshes with the double-ended gear 24 is rotatably connected to the side of the bracket 26 near the drill barrel 1. A first half gear 27 that meshes with the double-ended gear 24 is fixedly connected to the middle of the second half gear 28. A first servo motor 29 is fixedly connected to one end of the bracket 26, and the first servo motor 29 is used to drive the first half gear 27 and the second half gear 28 to rotate synchronously.

[0040] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the specific structure and principle of the telescopic cylinder 11 and the spiral soil sampling drill 12 are existing technologies, so they are not described in detail in this application. In addition, the second friction thread 23 and the first friction thread 22 are spirally opposite in state, and the double-headed gear 24 meshes with the bevel gear 25, the second half gear 28 and the first half gear 27 respectively. Moreover, there are half teeth inside the second half gear 28, and half teeth on the outside of the first half gear 27, so that the first half gear 27 and the second half gear 28 maintain positive and negative meshing transmission with the double-headed gear 24 during rotation. In addition, a scale is provided on the outside of the drill barrel 1, and parts of the drill barrel 1 and the sampling barrel 21 are made of transparent material.

[0041] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, when sampling and testing saline-alkali soil is required, the spiral soil sampling drill 12 first rotates inside the sampling cylinder 21 and the drill cylinder 1. At this time, the end of the spiral soil sampling drill 12 makes pre-contact with the soil. Then, the end of the spiral soil sampling drill 12 is used to cut into the soil. Immediately afterwards, the telescopic cylinder 11 extends and retracts downward, pushing the spiral soil sampling drill 12 to move downward synchronously, so that the rest of the spiral soil sampling drill 12 moves into the depth of the soil. During the rotation of the spiral soil sampling drill 12, the edge of its blades cuts into the soil, peeling soil clods (including clods and salt crusts of saline-alkali soil) from their original position. The soil is pushed upwards along the helical surface of the blades. After entering the sampling cylinder 21, the soil is squeezed in the gap between the sampling cylinder 21 and the second friction thread 23 and the first friction thread 22. Larger soil clods are stuck between the blade edge and the protrusions of the second friction thread 23 and the first friction thread 22. As the drill bit continues to rotate, the blades push the soil clods towards the grinding grooves, while the protrusions of the second friction thread 23 and the first friction thread 22 apply a shearing force in the opposite direction to the soil clods, eventually tearing or grinding them up. At the same time, the first servo motor 29... The drive mechanism causes the second half-gear 28 and the first half-gear 27 to rotate synchronously along one side of the double-ended gear 24. Immediately, the inner half-teeth of the second half-gear 28 mesh with the double-ended gear 24, driving the double-ended gear 24 to rotate. Following this, the first half-gear 27 rotates synchronously under the rotation of the second half-gear 28, causing the outer half-teeth of the first half-gear 27 to move closer to the outer teeth of the double-ended gear 24. As the inner half-teeth of the second half-gear 28 pass over the outside of the double-ended gear 24, and the outer half-teeth of the first half-gear 27 move closer to the outside of the double-ended gear 24, the double-ended gear 24... The blank area between the second half gear 28 and the first half gear 27 causes the double-ended gear 24 to briefly idle. Then, the outer half tooth of the first half gear 27 meshes with the outer part of the double-ended gear 24 to drive the double-ended gear 24 to rotate in the opposite direction. Subsequently, the double-ended gear 24 meshes with the bevel gear 25 to drive the sampling cylinder 21 to rotate in both directions inside the drill barrel 1. Thus, the spiral soil drill 12 will continue to transport the broken soil particles upward with the blades until they are discharged from the inside of the sampling port 13. Therefore, the soil completes a continuous process of "cutting-breaking-transporting" during sampling and testing.

[0042] refer to Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, a horizontal push assembly 3 for pushing the soil at the top of the spiral soil sampling drill 12 is provided between the drill barrel 1 and the sampling port 13. The horizontal push assembly 3 includes a standing frame 37 fixedly connected to the outside of the drill barrel 1. A directional rod 34 is rotatably connected to the top of the drill barrel 1, and one end of the directional rod 34 passes through the sampling port 13 and is rotatably connected to one side of the standing frame 37. A tearing ring 31 is fixedly connected inside the sampling port 13, and a tearing ring 32 is fixedly sleeved on the outside of the directional rod 34, and the tearing ring 32 is located inside the tearing ring 31.

[0043] One end of the tearing ring 32 is fixedly connected to the crushing mill base 33, and the crushing mill base 33 and the tearing ring 32 and the tearing ring 31 maintain a structure with a wide opening and a narrow middle. Two symmetrical push blades 35 are fixedly connected to the outside of the directional rod 34, and the two push blades 35 are staggered on the outside of the directional rod 34.

[0044] refer to Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the telescopic end of the telescopic cylinder 11 is offset from the horizontal push assembly 3 to avoid mutual interference and maintain normal operation. The directional rod 34 is higher than the top of the spiral soil sampling drill 12, ensuring that the spiral soil sampling drill 12 discharges the lifted soil into the sampling port 13. When the spiral soil sampling drill 12 lifts the extracted soil upward along the inside of the sampling cylinder 21 to near the sampling port 13, the second servo motor 36 drives the directional rod 34 to rotate along the inside of the drill cylinder 1 and the sampling port 13, which in turn drives the two push blades 35 to rotate synchronously. At this time, the soil in contact with the two push blades 35 during rotation forms shear, pushing the soil along the spiral surface of the two push blades 35 between the tearing ring 32, the crushing grinding seat 33 and the tearing ring 32. Then, the crushing grinding seat 33 and the tearing ring 32 rotate synchronously along the inside of the tearing ring 32 under the rotation of the directional rod 34 to crush the soil inside.

[0045] refer to Figure 5 and Figure 7 As shown, a stabilizing assembly 4 and a receiving cup assembly 5 are provided between the drill barrel 1 and the sampling port 13 to empty the soil inside the transverse push assembly 3. A diversion box 44 is fixedly connected to the outside of the stabilizing assembly 4. A ring guide groove 41 is provided between the drill barrel 1, the sampling port 13 and the diversion box 44. A first air outlet pipe 42 and a second air outlet pipe 43 that cooperate with the ring guide groove 41 are respectively installed inside the sampling port 13. The first air outlet pipe 42 and the second air outlet pipe 43 are of different lengths inside the sampling port 13. A blower 45 that communicates with the inside of the diversion box 44 is fixedly connected to the outside of the diversion box 44. The diversion box 44 and the ring guide groove 41 guide the airflow generated inside the box to the first air outlet pipe 42 and the second air outlet pipe 43.

[0046] refer to Figure 5 and Figure 7 As shown, when it is necessary to perform stratified sampling inside the sampling port 13 and to clean up the soil samples remaining inside the sampling port 13 after sampling, the blower 45 can drive the airflow inside the diversion box 44. Then, the diversion box 44 delivers the airflow to the inside of the ring guide groove 41. The airflow flows along the guide path inside the ring guide groove 41 and diffuses into the inside of the first air outlet pipe 42 and the second air outlet pipe 43 respectively. As the airflow continuously flows into the first air outlet pipe 42 and the second air outlet pipe 43, they will blow the internal airflow towards the vicinity of the tearing ring 31, tearing ring 32, and crushing mill base 33 for sweeping. Finally, the soil samples remaining between the tearing ring 31, tearing ring 32 and crushing mill base 33 are cleaned up, reducing the soil sample residue inside the sampling port 13 from the previous time. This ensures that each layer of sample only contains soil at the current depth, ensuring that the test data can truly represent the salinization characteristics of the layer and provide a reliable basis for subsequent soil stratification remediation.

[0047] refer to Figure 8 and Figure 9 As shown, the cup receiving assembly 5 includes two brackets 51 symmetrically fixedly connected to one side of the upright frame 37, and a cup receiving collar 52 is installed between the two brackets 51. Several abutment arc frames 53 are installed inside the cup receiving collar 52, and the top of the abutment arc frame 53 is provided with an arc-shaped structure. A flipping assembly 6 for connection is provided between the cup receiving collar 52 and the bracket 51. An arc groove 54 for the abutment arc frame 53 to move is opened inside the cup receiving collar 52. A contact post 57 is installed inside the arc groove 54. A concentric groove 55 for the contact post 57 to move is opened on one side of the abutment arc frame 53, and a return spring 56 is connected between the contact post 57 and the concentric groove 55.

[0048] The flipping assembly 6 includes a threaded hole 61 on one side of one of the brackets 51, a limiting post 63 connecting the other bracket 51 and the cup receiving collar 52, a threaded groove 64 on the outside of the cup receiving collar 52, and an adjusting bolt 62 screwed on one side of one of the brackets 51, and the adjusting bolt 62 is screwed into the threaded groove 64 corresponding to the threaded hole 61 through the threaded hole 61.

[0049] refer to Figure 8 and Figure 9 As shown, there are three abutment arc frames 53, and the number of arc grooves 54, contact posts 57, concentric grooves 55 and return springs 56 are the same as those of abutment arc frames 53. Moreover, concentric grooves 55, return springs 56 and contact posts 57 are symmetrically arranged on one side of abutment arc frames 53.

[0050] refer to Figure 8 and Figure 9As shown, when it is necessary to collect soil samples discharged near sampling port 13, after inserting the sampling cup into the cup receiving collar 52, the side of the contact arc frame 53 will come into contact with the sampling cup, and relative compression will occur between the two. The contact arc frame 53 will be forced to move into the arc groove 54; then, the concentric groove 55 will move along the outside of the contact post 57 in the direction of force, and the return spring 56 will be compressed between the concentric groove 55 and the contact post 57 under the drive of the concentric groove 55. During this process, the outside of the sampling cup moves along the contact arc frame 53... The sample cup moves slowly downward until its mouth contacts the top of the receiving cup collar 52. At this time, the receiving cup collar 52 lifts the sample cup. Then, the return spring 56 returns to its elasticity and applies a push to one side of the concentric groove 55, driving the contact arc frame 53 to move along the inside of the arc groove 54 towards the outside of the sample cup and close to it, thereby ensuring that the sample cup remains stable inside the receiving cup collar 52. Through this structure, the sample cup can stably collect the soil sample discharged from the sampling port 13, ensuring that the soil sample can truly reflect the actual condition of the soil during testing.

[0051] refer to Figure 8 and Figure 9 As shown, when the soil sample inside the sampling port 13 is being cleaned, the adjusting bolt 62 is rotated to engage with the sample along the threaded groove 65 and the threaded hole 61. Then, one end of the adjusting bolt 62 moves horizontally along the threaded groove 64 and the threaded hole 61. During this movement, the adjusting bolt 62 disengages from the threaded groove 64. At this time, the receiving cup ring 52 loses its locking function between the two supports 51. The receiving cup ring 52 is rotated to adjust its posture between the two supports 51. During the adjustment, the outer side of the receiving cup ring 52 rotates synchronously along the outer side of the limiting post 63. Then, the adjusting bolt 62 is re-screwed into the threaded groove 64 to keep the distance of the receiving cup ring 52 after adjustment stable, which can prevent the soil sample inside the sampling port 13 from falling into the receiving cup ring 52 or the interior of the receiving arc frame 53 during cleaning.

[0052] Working principle:

[0053] When using;

[0054] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, when sampling and testing saline-alkali soil is required, the spiral soil sampling drill 12 first rotates inside the sampling cylinder 21 and the drill cylinder 1. At this time, the end of the spiral soil sampling drill 12 makes contact with the soil. Then, the end of the spiral soil sampling drill 12 is used to cut into the soil. Immediately afterwards, the telescopic cylinder 11 extends and retracts downward to push the spiral soil sampling drill 12 downward synchronously, so that the rest of the spiral soil sampling drill 12 moves into the depth of the soil. During the rotation of the spiral soil sampling drill 12, the edge of its blades cuts into the soil, peels the soil clods (including clods and salt crusts of saline-alkali soil) from the in-situ, and pushes them upward along the spiral surface of the blades. The soil sample is then broken by the sampling component 2 and continues to be conveyed upward with the blades of the spiral soil sampling drill 12 until it is discharged into the sampling port 13. Therefore, the soil completes a continuous process of "cutting-breaking-conveying" during sampling and testing.

[0055] refer to Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, when the spiral soil drill 12 lifts the extracted soil upwards along the inside of the sampling cylinder 21 to near the sampling port 13, the second servo motor 36 drives the directional rod 34 to rotate along the inside of the drill cylinder 1 and the sampling port 13, which in turn drives the two pusher blades 35 to rotate synchronously. At this time, the soil in contact with the two pusher blades 35 during rotation forms shear, pushing the soil along the spiral surface of the two pusher blades 35 between the tearing ring 32, the crushing mill seat 33 and the tearing ring 32. Then, the crushing mill seat 33 and the tearing ring 32 rotate synchronously along the inside of the tearing ring 32 under the rotation of the directional rod 34, which is used to tear the soil inside. When it is necessary to perform layered sampling inside the sampling port 13 and to clean up the soil samples remaining inside the sampling port 13 after sampling, the stabilizing component 4 removes the previous soil sample residue inside the sampling port 13 and the horizontal pusher component 3, so that each layer of sample only contains soil at the current depth, ensuring that the test data can truly represent the salinization characteristics of the layer, and providing a reliable basis for subsequent soil stratification management.

[0056] refer to Figure 8 and Figure 9As shown, when it is necessary to collect soil samples discharged near sampling port 13, after inserting the sampling cup into the cup receiving collar 52, the side of the contact arc frame 53 will come into contact with the sampling cup, and relative compression will occur between the two. The contact arc frame 53 will be forced to move into the arc groove 54; then, the concentric groove 55 will move along the outside of the contact post 57 in the direction of force, and the return spring 56 will be compressed between the concentric groove 55 and the contact post 57 under the drive of the concentric groove 55. During this process, the outside of the sampling cup moves along the contact arc frame 53... The sample cup moves slowly downward until its mouth contacts the top of the receiving collar 52. At this time, the receiving collar 52 supports the sample cup. Then, the return spring 56 returns to its original position by applying a pushing force to one side of the concentric groove 55, which drives the contact arc frame 53 to move along the inside of the arc groove 54 towards the outside of the sample cup and get closer to it. This ensures that the sample cup remains stable inside the receiving collar 52. Through this structure, the sample cup can stably collect the soil sample discharged from the sampling port 13, ensuring that the soil sample can truly reflect the actual condition of the soil during testing.

[0057] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, 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 foregoing 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 soil testing device for saline-alkali land remediation, comprising a drill cylinder, a telescopic cylinder, and a spiral soil sampling drill, wherein the top of the drill cylinder has a sampling port communicating with its interior, characterized in that: A sampling assembly is provided between the drill barrel and the spiral soil sampling drill. The sampling assembly includes a sampling cylinder rotatably connected inside the drill barrel and a second friction thread and a first friction thread symmetrically fixed inside the sampling cylinder. The second friction thread and the second friction thread maintain rotational friction with the spiral soil sampling drill. A positive and negative, and idling positive empty assembly is provided between the drill barrel and the sampling cylinder. A horizontal push assembly is provided between the drill barrel and the sampling port to push the soil at the top of the spiral soil sampling drill. A stabilizing assembly and a receiving cup assembly are provided between the drill barrel and the sampling port to empty the soil inside the horizontal push assembly.

2. The soil testing device for saline-alkali land remediation according to claim 1, characterized in that: The positive air assembly includes a bevel gear rotatably connected inside the drill barrel, and the bevel gear is fixedly sleeved on the outside of the sampling cylinder. A double-ended gear is movably connected to the outside of the drill barrel, and one end of the double-ended gear is located between the sampling cylinder and the drill barrel and meshes with the bevel gear. A bracket is fixedly connected to the outside of the drill barrel. A second half gear that meshes with the double-ended gear is rotatably connected to the side of the bracket near the drill barrel. A first half gear that meshes with the double-ended gear is fixedly connected to the middle of the second half gear. A first servo motor is fixedly connected to one end of the bracket, and the first servo motor is used to drive the first half gear and the second half gear to rotate synchronously.

3. The soil testing device for saline-alkali land remediation according to claim 2, characterized in that: The horizontal push assembly includes a standing frame fixedly connected to the outside of the drill barrel. The top of the drill barrel is rotatably connected to an directional rod, and one end of the directional rod passes through the sampling port and is rotatably connected to one side of the standing frame. A tearing ring is fixedly connected inside the sampling port, and a tearing ring is fixedly sleeved on the outside of the directional rod, with the tearing ring located inside the tearing ring.

4. The soil testing device for saline-alkali land remediation according to claim 3, characterized in that: One end of the tearing ring is fixedly connected to a crushing mill base, and the crushing mill base and the tearing ring and tearing ring maintain a structure with a wide opening and a narrow middle. Two symmetrical push blades are fixedly connected to the outside of the directional rod, and the two push blades are staggered on the outside of the directional rod.

5. A soil testing device for saline-alkali land remediation according to claim 3, characterized in that: The cup receiving assembly includes two brackets symmetrically fixedly connected to one side of the upright frame, and a cup receiving collar is installed between the two brackets. Several abutment arc frames are installed inside the cup receiving collar, and the top of the abutment arc frames is provided with an arc-shaped structure. A flipping component for connection is provided between the cup receiving collar and the bracket.

6. The soil testing device for saline-alkali land remediation according to claim 5, characterized in that: The cup receiving collar has an arc groove inside for the movement of the contact arc frame. A contact post is installed inside the arc groove. A concentric groove is provided on one side of the contact arc frame for the movement of the contact post. A return spring is connected between the contact post and the concentric groove.

7. A soil testing device for saline-alkali land remediation according to claim 5, characterized in that: The flipping assembly includes a threaded hole on one side of one of the brackets, a limiting post connected between the other bracket and the cup receiving collar, a threaded groove on the outside of the cup receiving collar, and an adjusting bolt screwed onto one side of one of the brackets, with the adjusting bolt being screwed into the threaded groove corresponding to the threaded hole through the threaded hole.

8. The soil testing device for saline-alkali land remediation according to claim 1, characterized in that: The stabilizing assembly is externally fixedly connected to a flow divider box. A ring guide groove is provided between the drill barrel, the sampling port, and the flow divider box. The sampling port is internally equipped with a first air outlet pipe and a second air outlet pipe that cooperate with the ring guide groove. The first air outlet pipe and the second air outlet pipe are of different lengths inside the sampling port. The flow divider box is externally fixedly connected to a blower that communicates with its interior. The flow divider box and the ring guide groove guide the airflow generated inside it into the first air outlet pipe and the second air outlet pipe.

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