Hydrogeological survey stratified sampling device and sampling method

Abstract

The stratified sampling device comprises a base, the top of the base is fixedly connected with a supporting frame, and the interior of the supporting frame is slidably connected with a lifting seat; the invention relates to the technical field of hydrogeological investigation and discloses a stratified sampling device and method for hydrogeological investigation, and the stratified sampling device and method for hydrogeological investigation are provided with a sampling barrel, a drill bit, an adjusting mechanism, a sampling frame, a fixing frame, an adjusting frame, a connecting frame and an arc-shaped baffle plate, so that the stratified sampling function in the hydrogeological investigation process is realized; an arc-shaped baffle can be opened after reaching a specified depth during sampling, so that soil samples of different soil layers are prevented from being mixed into the sampling frame to influence a sampling result, the sampling frame can be pushed out through an adjusting mechanism after sampling is completed, and the collected soil samples are convenient to take; by arranging a fixing rod, a mounting seat and a locking mechanism, the functions of quickly mounting and dismounting the sampling frame are realized, and the sampling frame can be independently dismounted and cleaned after the sampling work is completed.

Description

Technical Field

[0001] This invention relates to the field of hydrogeological exploration technology, specifically to a hydrogeological exploration stratified sampling device and sampling method. Background Technology

[0002] Hydrogeological exploration refers to the professional technical work of studying the formation, distribution, burial conditions, movement patterns, water quality, quantity, and interaction with the surrounding geological environment of groundwater through systematic investigation, exploration, and analysis. In hydrogeological exploration, stratified sampling is a crucial step in obtaining information about soil layers at different depths, and its results directly affect the accuracy of subsequent work such as geological structure analysis and groundwater hydrological assessment.

[0003] Existing stratified sampling devices often struggle to prevent soil sample mixing at different depths during the sampling process. This frequently results in upper-layer soil samples contaminating the target depth sample, leading to contamination and affecting the reliability of the test data. Furthermore, the process of removing the soil samples after sampling is cumbersome, requiring complex procedures in most devices. This not only results in low efficiency but also risks secondary mixing of samples. Additionally, residual soil after sampling can cause cross-contamination in subsequent sampling, severely impacting the reliability of subsequent exploration data and reducing the effectiveness of the device. Therefore, we propose a stratified sampling device and method for hydrogeological exploration. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a hydrogeological exploration stratified sampling device and method. This solves the problems of difficulty in effectively preventing soil sample mixing at different depths during the sampling process, often resulting in upper-layer soil samples mixing with samples at the target depth, leading to sample contamination and affecting the accuracy of test data. Furthermore, the soil sample removal operation after sampling is cumbersome, requiring complex procedures in most devices, which is not only inefficient but may also cause secondary sample mixing. Additionally, residual soil samples after sampling can cause cross-contamination in subsequent sampling, seriously affecting the reliability of subsequent exploration data and reducing the effectiveness of the device.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A hydrogeological exploration stratified sampling device includes a base, a support frame fixedly connected to the top of the base, a lifting seat slidably connected inside the support frame, a connecting seat fixedly connected to one side of the lifting seat, a rotating shaft rotatably connected inside the connecting seat, a sampling tube fixedly connected to one end of the rotating shaft, a drill bit fixedly connected to the bottom of the sampling tube, a fixed frame fixedly connected at equal intervals to the inner wall of the sampling tube, an adjusting frame slidably connected to the inner wall of the sampling tube, a connecting frame fixedly connected to the bottom of the adjusting frame, an arc-shaped baffle fixedly connected at equal intervals to one side of the connecting frame, the arc-shaped baffle slidably connected to the fixed frame, limit rods symmetrically fixedly connected to the inner wall of the sampling tube, an adjusting rod slidably connected to the outer side of the limit rod, an adjusting mechanism cooperating with the adjusting rod inside the sampling tube, a fixed rod fixedly connected at equal intervals to one side of the adjusting rod, a mounting base fixedly connected to one end of the fixed rod, a sampling frame provided on one side of the mounting base, the sampling frame slidably connected to the fixed frame, and a locking mechanism cooperating with the sampling frame inside the mounting base.

[0007] In a preferred embodiment, support blocks are fixedly connected at equal intervals on one side of the support frame, a first lead screw is rotatably connected between two support blocks, the lifting seat is threadedly connected to the first lead screw, and a first motor is fixedly connected to the outer side of one of the support blocks, the output end of the first motor is fixedly connected to the first lead screw.

[0008] The technical effect of adopting the above-mentioned further solution is that the first motor drives the first lead screw to rotate, thereby driving the lifting seat to move. The lifting seat drives the connecting seat to move, thereby driving the sampling cylinder and the drill bit to rotate and descend, so that the sampling cylinder drills through the soil and moves downward.

[0009] In a preferred embodiment, the support frame has symmetrically provided limiting grooves inside, and the lifting seat has symmetrically fixedly connected limiting blocks on the outside, with the limiting blocks slidably connected to the limiting grooves.

[0010] The technical effect of adopting the above-mentioned further solution is that the movement of the lifting seat can be limited by setting the limiting groove and the limiting block to prevent deviation.

[0011] In a preferred embodiment, a second motor is fixedly connected to the top of the connecting seat, the output end of the second motor is fixedly connected to the rotating shaft, and a battery box is fixedly connected to one side of the support frame.

[0012] The technical effect of adopting the above-mentioned further solution is that the second motor drives the sampling cylinder to rotate through the rotating shaft, the sampling cylinder drives the drill bit to rotate, the battery inside the battery box can provide power support for the device, and the status of the device can be controlled through the control panel on the outside of the support frame.

[0013] In a preferred embodiment, the adjusting mechanism includes a sliding seat, which is symmetrically slidably connected to the inside of the sampling cylinder. The sliding seat is in contact with the inner wall of the sampling cylinder, and a connecting rod is rotatably connected to one side of the sliding seat. The connecting rod is rotatably connected to the adjusting rod.

[0014] The technical effect of adopting the above-mentioned further solution is that the movement of the sliding seat drives the connecting rod to rotate, thereby causing the adjusting rod to slide along the two sets of limit rods. The adjusting rod drives the sampling frame to move through the fixed rod and the mounting seat.

[0015] In a preferred embodiment, a second fixing block is fixedly connected to the inner wall of the sampling cylinder, and a bidirectional lead screw is rotatably connected between the second fixing block and the sampling cylinder. The sliding seat is threadedly connected to the bidirectional lead screw, and a knob is fixedly connected to one end of the bidirectional lead screw.

[0016] The technical effect of adopting the above-mentioned further solution is that the knob at one end of the bidirectional lead screw drives the bidirectional lead screw to rotate, and the rotation of the bidirectional lead screw drives the two sets of sliding seats to slide along the inner wall of the sampling cylinder.

[0017] In a preferred embodiment, a first fixing block is fixedly connected to the inner wall of the sampling cylinder, a second lead screw is rotatably connected between the first fixing block and the sampling cylinder, the adjusting frame is threadedly connected to the second lead screw, a knob is fixedly connected to one end of the second lead screw, and damping rings are installed on the outer side of both the second lead screw and the outer side of the bidirectional lead screw.

[0018] The technical effect of adopting the above-mentioned further solution is that the rotation of the second lead screw drives the adjustment frame to slide along the inner wall of the sampling cylinder, and the adjustment frame drives the arc-shaped baffle to move through the connecting frame. The setting of the damping ring can increase the friction force and prevent the knob from rotating when the sampling cylinder rotates.

[0019] In a preferred embodiment, the locking mechanism includes a sliding block, the inner wall of the mounting base is symmetrically slidably connected to the sliding block, a locking block is fixedly connected at equal intervals to one side of the sliding block, and a mounting block is symmetrically fixedly connected to one side of the sampling frame. The mounting block has mounting grooves at equal intervals inside for use with the locking block.

[0020] The technical effect of adopting the above-mentioned further solution is that the sliding block drives the locking block to move, and the locking block can lock the position of the mounting block by entering the interior of the mounting groove, which facilitates the installation and fixation of the sampling frame.

[0021] In a preferred embodiment, a slider is slidably connected to the inner wall of the mounting base, a connecting rod is symmetrically rotatably connected to the outer side of the slider, the connecting rod is rotatably connected to the slider block, a sliding rod is fixedly connected to one side of the slider, the sliding rod is slidably connected to the mounting base, a spring is sleeved on the outer side of the sliding rod and on the side of the slider, and a connecting block is fixedly connected to the end of the sliding rod away from the slider.

[0022] The technical effect of adopting the above-mentioned further solution is that the connecting block drives the sliding rod to move, the sliding rod drives the slider to move, the spring can drive the slider to move and reset, the movement of the slider drives the connecting rod to rotate, and then drives the sliding block to slide.

[0023] This invention also discloses a method for stratified sampling in hydrogeological exploration, comprising the following steps:

[0024] Step 1: Layered sampling. Start the second motor, which drives the sampling cylinder to rotate via a shaft. The sampling cylinder drives the drill bit to rotate, breaking through the soil. Start the first motor, which drives the first lead screw to rotate, thereby moving the lifting seat. The lifting seat moves the connecting seat, causing the sampling cylinder and drill bit to rotate and descend. This allows the sampling cylinder to break through the soil and move downwards. When the specified depth is reached, stop rotating the sampling cylinder. Rotate the second lead screw, which causes the adjusting frame to slide along the inner wall of the sampling cylinder. The adjusting frame moves the arc-shaped baffle via the connecting frame, exposing the sampling frame. Continue rotating the sampling cylinder at the original depth, allowing the loose soil sample broken by the drill bit to enter the sampling frame for collection. After collection, stop rotating the sampling cylinder and rotate the second lead screw in the opposite direction, causing the arc-shaped baffle to move and reset, thus shielding the sampling frame and preventing sample mixing.

[0025] Step 2: Soil sampling. After the stratified sampling is completed, turn the knob at one end of the double-ended screw to rotate the double-ended screw. The rotation of the double-ended screw causes the two sets of sliding seats to slide along the inner wall of the sampling tube. The movement of the sliding seats causes the connecting rod to rotate, which in turn causes the adjusting rod to slide along the two sets of limiting rods. The adjusting rod moves the sampling frame through the fixing rod and the mounting seat, thereby pushing the sampling frame out of the sampling tube to facilitate the removal of the soil sample inside the sampling tube.

[0026] Step 3: Sampling frame cleaning. After the soil sample collection is completed, pull the connecting block. The connecting block drives the slider to slide along the inner wall of the mounting base via the sliding rod. The spring is compressed, and the movement of the slider drives multiple sets of connecting rods to rotate, thereby driving two sets of sliding blocks to slide along the inner wall of the mounting base. The sliding blocks drive the locking block to move away from the mounting groove, thus releasing the locking state of the mounting block, making it convenient to remove the sampling frame for cleaning.

[0027] This invention provides a hydrogeological exploration stratified sampling device and sampling method. Compared with the prior art, it has the following advantages:

[0028] 1. The hydrogeological exploration stratified sampling device and sampling method, by setting up a sampling cylinder, drill bit, adjustment mechanism, sampling frame, fixed frame, adjustment frame, connecting frame and arc baffle, realizes the function of stratified sampling during hydrogeological exploration. During sampling, the arc baffle can be opened after reaching the specified depth to prevent soil samples from different soil layers from mixing into the sampling frame and affecting the sampling results. After sampling is completed, the sampling frame can be pushed out by the adjustment mechanism to facilitate the retrieval of the collected soil sample.

[0029] 2. The hydrogeological exploration stratified sampling device and sampling method, by setting up a fixed rod, mounting base and locking mechanism, realizes the function of quick installation and disassembly of the sampling frame. After the sampling work is completed, the sampling frame can be disassembled and cleaned separately, thereby preventing the soil sample remaining inside the sampling frame from being mixed into the new sample in the next sampling, thus ensuring the accuracy of subsequent sampling data. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the support frame of the present invention;

[0032] Figure 3 This is a schematic diagram of the lifting seat of the present invention;

[0033] Figure 4 This is a schematic diagram of the internal structure of the sampling tube of the present invention;

[0034] Figure 5 This is an enlarged view of part A of the present invention;

[0035] Figure 6 This is a schematic diagram of the internal structure of the fixing frame of the present invention;

[0036] Figure 7 This is a schematic diagram of the structure of the adjustment frame of the present invention;

[0037] Figure 8 This is a schematic diagram of the structure of the sliding seat of the present invention;

[0038] Figure 9 This is a schematic diagram of the adjusting rod of the present invention;

[0039] Figure 10 This is a schematic diagram of the mounting base of the present invention;

[0040] Figure 11This is a schematic diagram of the sampling frame of the present invention.

[0041] Legend:

[0042] 1. Base; 11. Support frame; 12. Lifting seat; 13. Limiting groove; 14. Support block; 15. First lead screw; 16. Battery box; 17. First motor; 18. Limiting block;

[0043] 2. Connecting seat; 21. Rotating shaft; 22. Second motor;

[0044] 3. Sampling cylinder; 31. Drill bit; 32. First fixing block; 33. Second lead screw; 34. Adjusting frame; 35. Adjusting rod; 36. Fixing frame; 37. Limiting rod; 38. Arc-shaped baffle; 39. Connecting frame;

[0045] 4. Adjustment mechanism; 41. Sliding seat; 42. Connecting rod; 43. Double-acting lead screw; 44. Second fixed block;

[0046] 5. Fixing rod; 51. Mounting base; 52. Sampling frame;

[0047] 6. Locking mechanism; 61. Connecting block; 62. Spring; 63. Slide rod; 64. Slider; 65. Sliding block; 66. Locking block; 67. Connecting rod; 68. Mounting block; 69. Mounting groove. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Please see Figures 1 to 11 The present invention provides a technical solution:

[0050] A hydrogeological exploration stratified sampling device includes a base 1, a support frame 11 fixedly connected to the top of the base 1, a lifting seat 12 slidably connected inside the support frame 11, a connecting seat 2 fixedly connected to one side of the lifting seat 12, a rotating shaft 21 rotatably connected inside the connecting seat 2, a sampling tube 3 fixedly connected to one end of the rotating shaft 21, a drill bit 31 fixedly connected to the bottom of the sampling tube 3, a fixing frame 36 fixedly connected at equal intervals to the inner wall of the sampling tube 3, an adjusting frame 34 slidably connected to the inner wall of the sampling tube 3, a connecting frame 39 fixedly connected to the bottom of the adjusting frame 34, and a connecting frame 39 fixedly connected to one side of the connecting frame 39. An arc-shaped baffle 38 is fixedly connected to the sampling cylinder 3, and the arc-shaped baffle 38 is slidably connected to the fixed frame 36. A limit rod 37 is symmetrically fixedly connected to the inner wall of the sampling cylinder 3. An adjusting rod 35 is slidably connected to the outer side of the limit rod 37. An adjusting mechanism 4 that works with the adjusting rod 35 is provided inside the sampling cylinder 3. A fixed rod 5 is fixedly connected to one side of the adjusting rod 35 at equal intervals. A mounting base 51 is fixedly connected to one end of the fixed rod 5. A sampling frame 52 is provided on one side of the mounting base 51. The sampling frame 52 is slidably connected to the fixed frame 36. A locking mechanism 6 that works with the sampling frame 52 is provided inside the mounting base 51.

[0051] In this scheme, the sampling cylinder 3 is rotated by the rotating shaft 21, which in turn drives the drill bit 31 to rotate. The rotation of the drill bit 31 can drill through the soil. The lifting seat 12 drives the connecting seat 2 to move, thereby causing the sampling cylinder 3 and the drill bit 31 to rotate and descend, which facilitates the operation of stratified sampling. The setting of the adjustment mechanism 4 can drive the sampling frame 52 to be pushed out, which is convenient for taking out the collected soil sample. The setting of the locking mechanism 6 can quickly install and disassemble the sampling frame 52. After the sampling work is completed, the sampling frame 52 can be disassembled and cleaned separately, thereby preventing the soil sample remaining inside the sampling frame 52 from being mixed into the new sample in the next sampling, thus ensuring the accuracy of subsequent sampling data.

[0052] like Figure 2 and Figure 3 As shown: In this scheme, support blocks 14 are fixedly connected at equal intervals on one side of the support frame 11, and a first lead screw 15 is rotatably connected between the two support blocks 14. The lifting seat 12 is threadedly connected to the first lead screw 15. A first motor 17 is fixedly connected to the outside of one of the support blocks 14, and the output end of the first motor 17 is fixedly connected to the first lead screw 15. Limiting grooves 13 are symmetrically opened inside the support frame 11, and limiting blocks 18 are symmetrically fixedly connected to the outside of the lifting seat 12. The limiting blocks 18 are slidably connected to the limiting grooves 13. A second motor 22 is fixedly connected to the top of the connecting seat 2, and the output end of the second motor 22 is fixedly connected to the rotating shaft 21. A battery box 16 is fixedly connected to one side of the support frame 11.

[0053] In this scheme, the second motor 22 drives the sampling cylinder 3 to rotate via the rotating shaft 21. The sampling cylinder 3 drives the drill bit 31 to rotate, and the rotation of the drill bit 31 can drill through the soil. The first motor 17 is started, and the first motor 17 drives the first lead screw 15 to rotate, thereby driving the lifting seat 12 to move. The lifting seat 12 drives the connecting seat 2 to move, thereby driving the sampling cylinder 3 and the drill bit 31 to rotate and descend. This allows the sampling cylinder 3 to drill through the soil and move downward. When it reaches the specified depth, the rotation of the sampling cylinder 3 stops, and the second lead screw 33 is rotated. The rotation of the second lead screw 33 causes the adjusting frame 34 to slide along the inner wall of the sampling cylinder 3. The adjusting frame 34 moves the arc-shaped baffle 38 through the connecting frame 39, so that the sampling frame 52 is exposed and the soil sample enters the interior of the sampling frame 52 for collection. After collection, the second lead screw 33 is rotated in the opposite direction, thereby moving the arc-shaped baffle 38 to move and reset, thus shielding the sampling frame 52 to prevent sample mixing. During sampling, the arc-shaped baffle 38 can be opened after reaching the specified depth to prevent soil samples from different soil layers from mixing into the interior of the sampling frame 52 and affecting the sampling results.

[0054] like Figure 4 , Figure 7 and Figure 8 As shown: In this scheme, the adjusting mechanism 4 includes a sliding seat 41. The sampling cylinder 3 is symmetrically and slidably connected to the sliding seat 41, which is in contact with the inner wall of the sampling cylinder 3. A connecting rod 42 is rotatably connected to one side of the sliding seat 41, and the connecting rod 42 is rotatably connected to the adjusting rod 35. A second fixing block 44 is fixedly connected to the inner wall of the sampling cylinder 3. A double-acting screw 43 is rotatably connected between the second fixing block 44 and the sampling cylinder 3. The sliding seat 41 is threadedly connected to the double-acting screw 43, and a knob is fixedly connected to one end of the double-acting screw 43. A first fixing block 32 is fixedly connected to the inner wall of the sampling cylinder 3. A second screw 33 is rotatably connected between the first fixing block 32 and the sampling cylinder 3. An adjusting frame 34 is threadedly connected to the second screw 33, and a knob is fixedly connected to one end of the second screw 33. Damping rings are installed on the outer side of the second screw 33 and the outer side of the double-acting screw 43.

[0055] In this scheme, after the stratified sampling is completed, the knob at one end of the bidirectional lead screw 43 is rotated, thereby causing the bidirectional lead screw 43 to rotate. The rotation of the bidirectional lead screw 43 causes the two sets of sliding seats 41 to slide along the inner wall of the sampling cylinder 3. The movement of the sliding seats 41 causes the connecting rod 42 to rotate, thereby causing the adjusting rod 35 to slide along the two sets of limiting rods 37. The adjusting rod 35 drives the sampling frame 52 to move through the fixing rod 5 and the mounting seat 51, thereby pushing the sampling frame 52 out of the sampling cylinder 3, making it convenient to take out the soil sample inside the sampling cylinder 3.

[0056] like Figure 10 and Figure 11As shown: In this scheme, the locking mechanism 6 includes a sliding block 65. The inner wall of the mounting base 51 is symmetrically slidably connected to the sliding block 65. A locking block 66 is fixedly connected at equal intervals to one side of the sliding block 65. A mounting block 68 is symmetrically fixedly connected to one side of the sampling frame 52. The mounting block 68 has mounting grooves 69 at equal intervals inside, which are used to cooperate with the locking block 66. The inner wall of the mounting base 51 is slidably connected to the slider 64. A connecting rod 67 is symmetrically rotatably connected to the outer side of the slider 64. The connecting rod 67 is rotatably connected to the sliding block 65. A sliding rod 63 is fixedly connected to one side of the slider 64. The sliding rod 63 is slidably connected to the mounting base 51. A spring 62 is sleeved on the outer side of the sliding rod 63 and on the side of the slider 64. A connecting block 61 is fixedly connected to the end of the sliding rod 63 away from the slider 64.

[0057] In this scheme, after the soil sample collection is completed, the connecting block 61 is pulled. The connecting block 61 drives the slider 64 to slide along the inner wall of the mounting base 51 via the sliding rod 63. The spring 62 is compressed, and the movement of the slider 64 drives multiple sets of connecting rods 67 to rotate, thereby driving two sets of sliding blocks 65 to slide along the inner wall of the mounting base 51. The sliding blocks 65 drive the locking block 66 to move away from the mounting groove 69, thus releasing the locking state of the mounting block 68. This facilitates the removal of the sampling frame 52 for cleaning and prevents residual soil sample inside the sampling frame 52 from being mixed into the new sample during the next sampling, ensuring the accuracy of subsequent sampling data.

[0058] This invention also discloses a method for stratified sampling in hydrogeological exploration, comprising the following steps:

[0059] Step 1: Layered sampling. Start the second motor 22. The second motor 22 drives the sampling cylinder 3 to rotate via the rotating shaft 21. The sampling cylinder 3 drives the drill bit 31 to rotate, which drills through the soil. Start the first motor 17. The first motor 17 drives the first lead screw 15 to rotate, which in turn moves the lifting seat 12. The lifting seat 12 moves the connecting seat 2, causing the sampling cylinder 3 and drill bit 31 to rotate and descend. This allows the sampling cylinder 3 to drill through the soil and move downwards. When the designated depth is reached, stop rotating the sampling cylinder 3. Rotating the second lead screw 33 causes the adjusting frame 34 to slide along the inner wall of the sampling cylinder 3. The adjusting frame 34 moves the arc-shaped baffle 38 through the connecting frame 39, exposing the sampling frame 52. The sampling cylinder 3 continues to rotate at the original depth, allowing the loose soil sample broken by the drill bit 31 to enter the sampling frame 52 for collection. After collection, the rotation of the sampling cylinder 3 is stopped, and the second lead screw 33 is rotated in the opposite direction, thereby moving and resetting the arc-shaped baffle 38 to block the sampling frame 52 and prevent sample mixing.

[0060] Step 2: Soil sampling. After the stratified sampling is completed, turn the knob at one end of the bidirectional lead screw 43 to rotate the bidirectional lead screw 43. The rotation of the bidirectional lead screw 43 causes the two sets of sliding seats 41 to slide along the inner wall of the sampling cylinder 3. The movement of the sliding seats 41 causes the connecting rod 42 to rotate, which in turn causes the adjusting rod 35 to slide along the two sets of limiting rods 37. The adjusting rod 35 drives the sampling frame 52 to move through the fixing rod 5 and the mounting seat 51, thereby pushing the sampling frame 52 out of the sampling cylinder 3, making it easier to take out the soil sample inside the sampling cylinder 3.

[0061] Step 3: Cleaning the sampling frame 52. After the soil sample collection is completed, pull the connecting block 61. The connecting block 61 drives the slider 64 to slide along the inner wall of the mounting base 51 via the sliding rod 63. The spring 62 is compressed. The movement of the slider 64 drives multiple sets of connecting rods 67 to rotate, thereby driving two sets of sliding blocks 65 to slide along the inner wall of the mounting base 51. The sliding block 65 drives the locking block 66 to move away from the mounting groove 69, thus releasing the locking state of the mounting block 68, making it convenient to remove the sampling frame 52 for cleaning.

[0062] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0063] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0064] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydrogeological exploration stratified sampling device, comprising a base (1), characterized in that: A support frame (11) is fixedly connected to the top of the base (1). A lifting seat (12) is slidably connected inside the support frame (11). A connecting seat (2) is fixedly connected to one side of the lifting seat (12). A rotating shaft (21) is rotatably connected inside the connecting seat (2). A sampling cylinder (3) is fixedly connected to one end of the rotating shaft (21). A drill bit (31) is fixedly connected to the bottom of the sampling cylinder (3). A fixing frame (36) is fixedly connected at equal intervals to the inner wall of the sampling cylinder (3). An adjusting frame (34) is slidably connected to the inner wall of the sampling cylinder (3). A connecting frame (39) is fixedly connected to the bottom of the adjusting frame (34). An arc-shaped baffle is fixedly connected at equal intervals to one side of the connecting frame (39). 38), the arc-shaped baffle (38) is slidably connected to the fixed frame (36), the inner wall of the sampling cylinder (3) is symmetrically fixedly connected to the limiting rod (37), the outer side of the limiting rod (37) is slidably connected to the adjusting rod (35), the inside of the sampling cylinder (3) is provided with the adjusting mechanism (4) that works with the adjusting rod (35), the side of the adjusting rod (35) is equidistantly fixedly connected to the fixing rod (5), one end of the fixing rod (5) is fixedly connected to the mounting base (51), the side of the mounting base (51) is provided with the sampling frame (52), the sampling frame (52) is slidably connected to the fixed frame (36), the inside of the mounting base (51) is provided with the locking mechanism (6) that works with the sampling frame (52).

2. The hydrogeological exploration stratified sampling device according to claim 1, characterized in that: Support blocks (14) are fixedly connected at equal intervals on one side of the support frame (11). A first lead screw (15) is rotatably connected between two support blocks (14). The lifting seat (12) is threadedly connected to the first lead screw (15). A first motor (17) is fixedly connected to the outside of one of the support blocks (14). The output end of the first motor (17) is fixedly connected to the first lead screw (15).

3. The hydrogeological exploration stratified sampling device according to claim 1, characterized in that: The support frame (11) has symmetrically provided limiting grooves (13) inside, and the lifting seat (12) has symmetrically fixedly connected limiting blocks (18) on the outside, and the limiting blocks (18) are slidably connected to the limiting grooves (13).

4. The hydrogeological exploration stratified sampling device according to claim 1, characterized in that: The top of the connecting seat (2) is fixedly connected to a second motor (22), the output end of the second motor (22) is fixedly connected to the rotating shaft (21), and a battery box (16) is fixedly connected to one side of the support frame (11).

5. The hydrogeological exploration stratified sampling device according to claim 1, characterized in that: The adjustment mechanism (4) includes a sliding seat (41), which is symmetrically slidably connected inside the sampling cylinder (3). The sliding seat (41) is in contact with the inner wall of the sampling cylinder (3). A connecting rod (42) is rotatably connected to one side of the sliding seat (41), and the connecting rod (42) is rotatably connected to the adjustment rod (35).

6. The hydrogeological exploration stratified sampling device according to claim 5, characterized in that: The inner wall of the sampling cylinder (3) is fixedly connected to a second fixing block (44), and a bidirectional lead screw (43) is rotatably connected between the second fixing block (44) and the sampling cylinder (3). The sliding seat (41) is threadedly connected to the bidirectional lead screw (43), and a knob is fixedly connected to one end of the bidirectional lead screw (43).

7. A hydrogeological exploration stratified sampling device according to claim 1, characterized in that: The inner wall of the sampling cylinder (3) is fixedly connected to a first fixing block (32), and a second lead screw (33) is rotatably connected between the first fixing block (32) and the sampling cylinder (3). The adjusting frame (34) is threadedly connected to the second lead screw (33). A knob is fixedly connected to one end of the second lead screw (33), and damping rings are installed on the outer side of the second lead screw (33) and the outer side of the bidirectional lead screw (43).

8. The hydrogeological exploration stratified sampling device according to claim 1, characterized in that: The locking mechanism (6) includes a sliding block (65), the inner wall of the mounting base (51) is symmetrically slidably connected to the sliding block (65), a locking block (66) is fixedly connected at equal intervals on one side of the sliding block (65), and a mounting block (68) is symmetrically fixedly connected on one side of the sampling frame (52). The mounting block (68) has mounting grooves (69) at equal intervals inside for use with the locking block (66).

9. A hydrogeological exploration stratified sampling device according to claim 8, characterized in that: A slider (64) is slidably connected to the inner wall of the mounting base (51). A connecting rod (67) is symmetrically rotatably connected to the outer side of the slider (64). The connecting rod (67) is rotatably connected to the sliding block (65). A sliding rod (63) is fixedly connected to one side of the slider (64). The sliding rod (63) is slidably connected to the mounting base (51). A spring (62) is sleeved on the outer side of the sliding rod (63) and on the side of the slider (64). A connecting block (61) is fixedly connected to the end of the sliding rod (63) away from the slider (64).

10. A method for stratified sampling in hydrogeological exploration, using the stratified sampling device for hydrogeological exploration as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Layered sampling. Start the second motor (22). The second motor (22) drives the sampling cylinder (3) to rotate via the rotating shaft (21). The sampling cylinder (3) drives the drill bit (31) to rotate. The rotation of the drill bit (31) can drill through the soil. Start the first motor (17). The first motor (17) drives the first lead screw (15) to rotate, thereby driving the lifting seat (12) to move. The lifting seat (12) drives the connecting seat (2) to move, thereby driving the sampling cylinder (3) and the drill bit (31) to rotate and descend, so that the sampling cylinder (3) drills through the soil and moves downward. When it reaches the specified depth, stop rotating the sampling cylinder (3). Rotate the second lead screw (33), and the rotation of the second lead screw (33) will drive the adjustment frame (34) to slide along the inner wall of the sampling tube (3). The adjustment frame (34) will drive the arc baffle (38) to move through the connecting frame (39), so that the sampling frame (52) is exposed. Continue to rotate the sampling tube (3) at the original depth, so that the loose soil sample broken by the drill bit (31) can enter the interior of the sampling frame (52) for collection. After collection, stop rotating the sampling tube (3) and rotate the second lead screw (33) in the opposite direction, so as to drive the arc baffle (38) to move and reset, thereby blocking the sampling frame (52) to prevent sample mixing. Step 2: Soil sampling. After the stratified sampling is completed, turn the knob at one end of the double-ended screw (43) to drive the double-ended screw (43) to rotate. The rotation of the double-ended screw (43) drives the two sets of sliding seats (41) to slide along the inner wall of the sampling tube (3). The movement of the sliding seats (41) drives the connecting rod (42) to rotate, thereby driving the adjusting rod (35) to slide along the two sets of limiting rods (37). The adjusting rod (35) drives the sampling frame (52) to move through the fixing rod (5) and the mounting seat (51), thereby pushing the sampling frame (52) out of the sampling tube (3) to facilitate the extraction of soil samples from inside the sampling tube (3). Step 3: Cleaning the sampling frame (52). After the soil sample collection is completed, pull the connecting block (61). The connecting block (61) drives the slider (64) to slide along the inner wall of the mounting base (51) through the sliding rod (63). The spring (62) is compressed. The movement of the slider (64) drives multiple sets of connecting rods (67) to rotate, thereby driving two sets of sliding blocks (65) to slide along the inner wall of the mounting base (51). The sliding block (65) drives the locking block (66) to move away from the mounting groove (69), thus releasing the locking state of the mounting block (68) and making it convenient to remove the sampling frame (52) for cleaning.

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