A layered sampling device for detecting salt content of saline soil

Abstract

The application discloses a layered sampling equipment for detecting salt content of saline soil and relates to the technical field of geological monitoring equipment. The layered sampling equipment for detecting salt content of saline soil comprises a puller, a clamping device is arranged at the bottom of the puller, and a sampling mechanism for sampling salt soil is clamped in the clamping device. A storage mechanism for storing salt soil is arranged in the sampling mechanism. The storage mechanism comprises a plurality of storage tubes which are mutually butted and slidingly arranged in the sampler. The storage tube is of a single-end through-opening structure. The sampling mechanism is driven into a salt soil layer of a specified depth by using a pile driver. The salt layer of the sidewall of the hole drilled by the sampling mechanism is sampled by pulling the sampling mechanism, and the salt layer is stored in the storage mechanism. The layered sampling equipment for detecting salt content of saline soil has the effects of high precision, high efficiency and perfection.

Description

Technical Field

[0001] This invention relates to the field of geological monitoring equipment technology, and in particular to a stratified sampling device for detecting the salinity of saline soil. Background Technology

[0002] The main purpose of salinity testing in saline soil is to assess the soil salinity status and its impact on engineering, agriculture, or the ecological environment, including ensuring crop growth, soil salinization control, irrigation management, engineering construction, salt swelling and corrosion, and monitoring soil strength. Saline soil testing is a fundamental basis for sustainable agricultural production, engineering safety, and ecological protection. By quantifying salinity data, it provides scientific support for the management and utilization of saline soil.

[0003] Currently available stamping sampling equipment uses a pile driver to press a hollow sample tube into a designated depth of saline soil, sampling by stamping. However, in actual operation, as the sample tube gradually enters the soil, the soil resistance inside the tube gradually increases, causing the sample soil inside the tube to compress. This leads to a significant change in the density of the sample soil, affecting subsequent experimental results on soil permeability and water retention. It can also cause the sampled soil layer to not match the actual depth, thus affecting the overall experimental accuracy. Summary of the Invention

[0004] This invention discloses a stratified sampling device for detecting the salt content of saline soil, aiming to solve the technical problem that the existing stamping sampling device on the market has insufficient experimental accuracy and operational reliability during actual operation.

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

[0006] A stratified sampling device for detecting the salinity of saline soil includes a puller, a clamping device installed at the bottom of the puller, and a sampling mechanism for sampling saline soil held inside the clamping device. The sampling mechanism includes a sampler vertically inserted into the saline soil layer. The side wall of the sampler has several evenly distributed empty intervals. An elastic cutter is rotatably installed inside each empty interval, and a reinforcing member is fixedly installed on the top of each elastic cutter.

[0007] The sampling device is equipped with a storage mechanism for storing saline soil. The storage mechanism includes several storage tubes that are connected to each other and slidably installed inside the sampler. The storage tubes have a single-end opening structure.

[0008] The sampling mechanism is driven into the saline soil layer at a specified depth using a pile driver. By lifting the sampling mechanism, the salt layer on the side wall of the hole drilled by the sampling mechanism is sampled and stored inside the storage mechanism.

[0009] By modifying the traditional stamping sampling equipment, the sampling mechanism is changed from bottom sampling to side sampling. After the sampling mechanism is driven into the saline soil layer at a specified depth using a pile driver, it is first activated by a handheld electric screwdriver, causing it to cut into the saline soil layer on the borehole sidewall. Then, the sampling mechanism is pulled up slightly to sample the saline soil on the borehole sidewall. This reduces the drawback of soil compression caused by traditional equipment, greatly improving sampling accuracy. The soil samples collected by the sampling mechanism are stored in batches in an additional storage mechanism. After the soil samples are collected, the storage mechanism can be pulled out. This replaces the complicated processing work after sampling with traditional equipment, greatly improving the convenience of operation.

[0010] In a preferred embodiment, a reinforcing steel member is installed through the interior of the sampler, and the reinforcing steel member is fixedly connected to a plurality of elastic cutters. The reinforcing member is fixedly connected to the elastic cutters, and a threaded tube is fixed to the top of each empty section. The threaded tube is hollow, and the reinforcing steel member passes through the threaded tube.

[0011] By modifying the traditional stamping sampling equipment, a side sampling mechanism is used instead of bottom sampling. After the sampling mechanism is driven into the saline soil layer at a specified depth using a pile driver, the steel reinforcement component is first turned by hand with an electric screwdriver. This causes the steel reinforcement component to rotate the reinforcing component and elastic cutter hidden inside the empty space. This causes the elastic cutter to cut into the saline soil layer on the borehole sidewall. During this process, the threads of the threaded tube and the reinforcing component push the elastic cutter to expand the cutting angle. Then, by slightly lifting the sampling mechanism, the expanded elastic cutter is used to sample the saline soil on the borehole sidewall. This reduces the drawback of soil compression caused by traditional equipment operation and greatly improves the sampling accuracy and operational reliability.

[0012] In a preferred embodiment, the sidewall of the storage tube is provided with a feeding chamber, and the bottom of each empty section is provided with a feeding channel, the bottom of each feeding channel being distributed on the side of a feeding chamber.

[0013] By further incorporating several interconnected storage tube structures inside the sampler, the soil samples collected by the elastic cutter are stored in batches in storage tubes at different heights along the feed channel and feed chamber. After the soil samples are collected, the entire sampler is removed using a puller, and then several storage tubes are removed by pulling. This simultaneously replaces the cumbersome processing work after sampling with traditional equipment, greatly improving the ease of operation of this equipment.

[0014] In a preferred embodiment, the clamping device includes two clamps connected to the end of the puller by steel cables. Each clamp has a symmetrically arranged annular groove at its proximal end. The two ends of the annular groove are of different sizes with the smaller end facing upward. A type I connector is rotatably connected between the proximal ends of the two clamps. A type II connector is also rotatably connected between the proximal ends of the two clamps. The type II connector engages and sleeves on the outside of the sampler.

[0015] By incorporating a clamping device structure adapted to the shape of the sampler into the traditional puller, a first-class connector and a second-class connector are used to engage with the outside of the sampler. In conjunction with a clamping structure with a specific shaped annular groove, the sampler is rotated and clamped to the outside of the sampler, thereby ensuring stability while pulling the sampler out of the saline soil and ensuring the integrity of the equipment operation.

[0016] In a preferred embodiment, the top of the reinforcing member is provided with a top sleeve, which is slidably connected in an annular groove at the top of the vacant section. The inner surface of the top sleeve is threadedly connected to the outer surface of the threaded pipe, and the top sleeve is slidably connected to the reinforcing steel member.

[0017] As can be seen from the above, the stratified sampling device for detecting the salt content of saline soil provided by the present invention has the following technical effects.

[0018] By modifying the traditional stamping sampling equipment, the bottom sampling method is replaced with side sampling. After the sampling mechanism penetrates the saline soil layer to a specified depth, the steel reinforcement component is twisted, causing the reinforcing component and elastic cutter hidden inside the empty space to rotate, thus cutting into the saline soil layer on the borehole sidewall. During this process, the threads of the threaded tube and the reinforcing component push the elastic cutter to expand the cutting angle. Then, by slightly lifting, the expanded elastic cutter samples the saline soil on the borehole sidewall, reducing the drawback of soil compression caused by traditional equipment sampling and greatly improving sampling accuracy. The sampler's interior is further equipped with several interconnected storage tube structures. The soil sample collected by the elastic cutter is stored in batches in storage tubes at different heights along the feed channel and feed chamber. After the soil sample collection is completed, the storage tubes can be removed by pulling them out, thus simultaneously replacing the complicated processing work after sampling with traditional equipment and greatly improving the convenience of operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure proposed in this invention.

[0020] Figure 2 This is a schematic diagram of the sampler structure proposed in this invention.

[0021] Figure 3 The present invention proposes Figure 2Enlarged view of the structure at point A in the middle.

[0022] Figure 4 This is an exploded view of the sampler structure proposed in this invention.

[0023] Figure 5 The present invention proposes Figure 4 Enlarged view of the structure at point B.

[0024] Figure 6 This is a cross-sectional view of the sampler structure proposed in this invention.

[0025] Figure 7 This is a schematic diagram of the initial state of the elastic cutter proposed in this invention.

[0026] Figure 8 This is a schematic diagram of the elastic cutter proposed in this invention rotating 180°.

[0027] Figure 9 This is an exploded view of the storage tube structure proposed in this invention.

[0028] Figure 10 This is a schematic diagram of the elastic cutter structure proposed in this invention.

[0029] Figure 11 This is an exploded view of the clamping device structure proposed in this invention.

[0030] In the diagram: 1. Puller; 2. Clamping device; 201. Clamp; 202. Annular groove; 203. Type I connector; 204. Type II connector; 3. Sampling mechanism; 301. Sampler; 302. Empty space; 303. Flexible cutter; 3031. Guide channel; 304. Reinforcing member; 3041. Top sleeve; 305. Reinforcing steel member; 3051. Positioning block; 3052. Positioning plate; 3053. Quick-connect sleeve; 306. Threaded tube; 4. Storage mechanism; 401. Storage tube; 402. Feed chamber; 403. Feed channel; 404. Quick-connect sleeve; 405. Threaded end; 5. Annular groove. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] The stratified sampling device for detecting the salt content of saline soil disclosed in this invention is mainly used in scenarios where stratified sampling is performed on saline land.

[0033] Reference Figures 1 to 11A layered sampling device for detecting the salt content of saline soil includes a puller 1, a clamping device 2 installed at the bottom of the puller 1, and a sampling mechanism 3 for sampling saline soil held inside the clamping device 2. The sampling mechanism 3 includes a sampler 301 vertically inserted into the saline soil layer. The side wall of the sampler 301 is provided with several evenly distributed empty intervals 302. An elastic cutter 303 is rotatably installed inside each empty interval 302. A reinforcing member 304 is fixedly installed on the top of each elastic cutter 303.

[0034] The sampling mechanism 3 is equipped with a storage mechanism 4 for storing saline soil. The storage mechanism 4 includes several storage tubes 401 that are connected to each other and slidably installed inside the sampler 301. The storage tubes 401 have a single-end port structure.

[0035] The sampling mechanism 3 is driven into the salt soil layer at a specified depth using a pile driver. The salt layer on the side wall of the hole drilled by the sampling mechanism 3 is sampled by lifting the sampling mechanism 3 and stored inside the storage mechanism 4.

[0036] In this embodiment: The worker installs the sampling mechanism 3 at the bottom of the press and starts the external press to press the entire sampling mechanism 3 into the saline soil to be inspected. It is necessary to ensure that the top of the sampling mechanism 3 is exposed above the ground surface. After pressing the sampling mechanism 3, the worker holds an electric screwdriver and connects the electric screwdriver to the top of the sampling mechanism 3. At the same time, the worker controls the electric screwdriver to deform the sampling mechanism 3 and cuts into the saline soil on the borehole sidewall in a horizontal rotation manner. At this time, the worker moves the puller 1 to the top of the sampling mechanism 3 and clamps the clamping device 2 on the top of the sampling mechanism 3 and pulls it upward slightly. During this process, the sampling mechanism 3 will dig the saline soil on the borehole sidewall into the storage mechanism 4. Afterwards, the worker controls the sampling mechanism 3 to reset its deformation by using the electric screwdriver and pulls the sampling mechanism 3 out of the soil again by using the puller 1. After pulling it out, the storage mechanism 4 can be pulled out separately from the sampling mechanism 3 to complete the sampling work.

[0037] Reference Figures 1 to 7 , Figure 9 In a preferred embodiment, a reinforcing steel member 305 is installed through the sampler 301. The reinforcing steel member 305 is fixedly connected to a plurality of elastic cutters 303. A reinforcing member 304 is fixedly connected to the elastic cutters 303. A threaded tube 306 is fixed to the top of each empty section 302. The threaded tube 306 is hollow. The reinforcing steel member 305 passes through the threaded tube 306. A top sleeve 3041 is provided on the top of the reinforcing member 304. The inner surface of the top sleeve 3041 is threadedly connected to the outer surface of the threaded tube 306. The top sleeve 3041 is slidably connected to the reinforcing steel member 305.

[0038] The worker installs the sampling mechanism 3 onto the bottom of the press and starts the external press to press the entire sampler 301 into the saline soil to be inspected, ensuring that the top of the sampler 301 is exposed above the ground surface. After pressing the sampler 301, the worker holds an electric screwdriver and aligns it with the top of the reinforcing steel member 305. Simultaneously, the worker controls the electric screwdriver to rotate the reinforcing steel member 305 180°. The rotating reinforcing steel member 305 causes several reinforcing members 304 and the elastic cutter 303 to rotate outward along the interior of the empty section 302, thereby cutting into the saline soil on the borehole sidewall. The specific details are shown in the attached figure. Figure 7 and Figure 8 As shown; at this time, the worker moves the puller 1 to the top of the sampler 301, and at the same time clamps the clamping device 2 on the top of the sampler 301 and pulls it upward slightly. During this process, the elastic cutter 303 will dig the salt soil from the borehole sidewall into the storage mechanism 4.

[0039] During the rotation of the reinforcing member 305 and the elastic cutter 303, the reinforcing member 304 and the top sleeve 3041 also rotate. The top sleeve 3041 is driven by the thread of the threaded tube 306, thus moving downward synchronously. The downward-moving top sleeve 3041 pushes the reinforcing member 304 to bend and causes the elastic cutter 303 to expand outward. The gap between the expanded elastic cutter 303 and the empty space 302 increases, thereby increasing the amount of soil fed in.

[0040] Each elastic cutter 303 has a guide channel 3031 in the middle to guide the cut salt soil.

[0041] Specifically, the top sleeve 3041 is slidably connected in the annular groove 5 at the top of the empty section 302. The vertically moving reinforcing member 304 will simultaneously drive the top sleeve 3041, causing it to slide vertically along the inside of the annular groove 5, thereby ensuring the sealing of the threaded tube 306 and preventing the threaded groove from being affected by impurities, which would affect the driving effect.

[0042] It is worth noting that the elastic cutter 303 and the reinforcing member 304 of this application are made of elastic steel, alloy or other materials. The edge of the elastic cutter 303 is chamfered to make it sharp, thereby reducing the resistance when cutting into the soil. The surface of the reinforcing member 304 can also be chamfered to reduce the resistance of the soil entering the guide channel 3031.

[0043] Specifically, a quick-connect sleeve 3053 is welded and fixed to the top of the reinforcing steel member 305. The quick-connect sleeve 3053 is connected to the worker's handheld electric screwdriver, thereby driving the reinforcing steel member 305 to rotate. A positioning block 3051 is fixed to the outer top of the reinforcing steel member 305, and a positioning plate 3052 is fixed to the top of the sampler 301. The positioning block 3051 and the positioning plate 3052 are symmetrically distributed. After rotation, the positioning block 3051 and the positioning plate 3052 press and contact, so that the elastic cutter 303 rotates exactly 180°, ensuring the soil cutting effect. Even if the electric screwdriver rotates more than 180°, the positioning block 3051 and the positioning plate 3052 will prevent the reinforcing steel member 305 from continuing to rotate. The electric screwdriver itself has a torque adjustment function. When the reinforcing steel member 305 can no longer rotate, the electric screwdriver will automatically slip.

[0044] Reference Figures 2 to 4 , Figure 6 , Figure 8 In a preferred embodiment, a feeding chamber 402 is provided through the side wall of the storage tube 401, and a feeding channel 403 is provided through the bottom of each empty interval 302, with the bottom end of each feeding channel 403 corresponding to the side of a feeding chamber 402.

[0045] The rotating elastic cutter 303 expands outward. As the sampler 301 moves vertically upward, the salt soil cut by the elastic cutter 303 will enter the storage tube 401 through the elastic cutter 303, the feed channel 403, and the feed chamber 402. After that, the worker uses the puller 1 to pull the sampler 301 out of the soil. After pulling it out, the storage tube 401 can be pulled out separately from the sampler 301 to complete the sampling work.

[0046] The sampler 301 is screwed onto the top with a quick-connect sleeve 404. The quick-connect sleeve 404 is sealed to the top of the storage tube 401 near the quick-connect sleeve head 3053. When the sampler 301 is stamped, the worker rotates the quick-connect sleeve 404 to the top of the sampler 301 and then quickly connects the top of the quick-connect sleeve 404 to the stamper.

[0047] Furthermore, each storage tube 401 is provided with a threaded end 405 at its top. Several storage tubes 401 are connected to each other by the threaded end 405. By rotating the storage tube 401, the threaded end 405 is disengaged, and each storage tube 401 can be removed individually.

[0048] Reference Figure 1 and Figure 10In a preferred embodiment, the clamping device 2 includes two clamps 201 connected to the end of the puller 1 by steel cables. Each clamp 201 has a symmetrically arranged annular groove 202 at its close end. The two ends of the annular groove 202 are different in size and the smaller end faces upward. A first-class connector 203 is rotatably connected between the close ends of the two clamps 201. A second-class connector 204 is also rotatably connected between the close ends of the two clamps 201. The second-class connector 204 is engaged and sleeved on the outside of the sampler 301.

[0049] When the worker pulls out the sampler 301 inserted into the ground, the worker first puts the two clamps 201 and the first type of connector 203 and the second type of connector 204 on the outside of the sampler 301, with the small end of the annular groove 202 facing upward. Then, the worker presses one end of the puller 1 by hand, causing the other end connected to the clamping device 2 to tilt upward. While tilting upward, the worker pulls the clamps 201, causing the clamps 201 to rotate around the first type of connector 203 and the second type of connector 204. The clamps then engage with the outside of the sampler 301 through the annular groove 202, and the worker pulls the sampler 301 simultaneously.

[0050] The workflow for this application is as follows:

[0051] First, the worker rotates and installs the quick-connect sleeve 404 onto the top of the sampler 301. Then, the top of the quick-connect sleeve 404 is quickly connected to the stamping machine. Next, the external stamping machine (not shown in the diagram) is started to vibrate and press the entire sampler 301 into the saline soil to be inspected. During the pressing process, the sampler 301 must be kept perpendicular to the ground. After pressing, the top of the sampler 301 must be exposed above the ground surface. After pressing the sampler 301, the worker uses an electric screwdriver to connect the quick-connect sleeve 3053 on the top of the reinforcing steel member 305 to the worker's handheld electric screwdriver. The screwdriver is connected to the reinforcing bar 305, and simultaneously the electric screwdriver drives the reinforcing bar 305 to rotate 180°. The rotating reinforcing bar 305 drives several reinforcing members 304 and the elastic cutter 303 to rotate outward along the interior of the empty space 302. During this process, the top sleeve 3041 of the reinforcing member 304 is driven by the thread of the threaded tube 306, thus moving downward synchronously. The moving top sleeve 3041 pushes the elastic cutter 303 outward through the reinforcing member 304, thereby cutting into the saline soil of the borehole sidewall in a horizontally rotating and outward manner. The specific state is shown in the attached figure. Figure 7As shown; at this time, the worker moves the puller 1 to the top of the sampler 301, and at the same time clamps the clamping device 2 on the top of the sampler 301 and pulls it upward slightly. As the sampler 301 moves vertically upward, the salt soil cut by the elastic cutter 303 will enter the interior of the storage tube 401 along the elastic cutter 303, the feed channel 403 and the feed chamber 402. Then the worker uses an electric screwdriver to drive the steel reinforcement component 305 to rotate 180°, so that the elastic cutter 303 is reset and the feed channel 403 is sealed. After that, the worker uses the puller 1 to pull the sampler 301 out of the soil. After pulling it out, the storage tube 401 is pulled out of the sampler 301 separately, and the storage tubes 401 filled with different depths are rotated and removed in sequence to complete the sampling work.

[0052] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A stratified sampling device for detecting the salt content of saline soil, comprising a puller (1), characterized in that, The bottom of the puller (1) is equipped with a clamping device (2), and the clamping device (2) holds a sampling mechanism (3) for saline soil sampling. The sampling mechanism (3) includes a sampler (301) vertically inserted into the saline soil layer. The side wall of the sampler (301) is provided with several evenly distributed empty intervals (302). An elastic cutter (303) is rotatably installed inside each empty interval (302). A reinforcing member (304) is fixedly installed on the top of each elastic cutter (303). A steel bar member (305) is installed through the sampler (301). The steel bar member (305) is connected to the sampler (301). Several elastic cutters (303) are fixedly connected, and the reinforcing member (304) is fixedly connected to the elastic cutter (303). A threaded tube (306) is fixed at the top of each empty section (302). The threaded tube (306) is hollow. The reinforcing member (305) passes through the threaded tube (306). A top sleeve (3041) is provided at the top of the reinforcing member (304). The top sleeve (3041) is slidably connected in the annular groove (5) at the top of the empty section (302). The inner surface of the top sleeve (3041) is threadedly connected to the outer surface of the threaded tube (306). The top sleeve (3041) is slidably connected to the reinforcing member (305). The sampling mechanism (3) is equipped with a storage mechanism (4) for storing saline soil. The storage mechanism (4) includes several storage tubes (401) that are connected to each other and slidably installed inside the sampler (301). The storage tubes (401) have a single-end port structure. The sampling mechanism (3) is driven into the salt soil layer at a specified depth using a pile driver. By lifting the sampling mechanism (3), the salt layer on the side wall of the hole drilled by the sampling mechanism (3) is sampled and stored inside the storage mechanism (4).

2. The stratified sampling device for detecting the salinity of saline soil according to claim 1, characterized in that, The storage tube (401) has a feeding chamber (402) through its side wall, and each empty interval (302) has a feeding channel (403) through its bottom. The bottom of each feeding channel (403) is distributed on the side of a feeding chamber (402).

3. The stratified sampling device for detecting the salinity of saline soil according to claim 1, characterized in that, The clamping device (2) includes two clamps (201) connected to the end of the puller (1) by steel cable traction. Each clamp (201) has a symmetrically arranged annular groove (202) at its close end. The two ends of the annular groove (202) are different in size and the smaller end faces upward. A type I connector (203) is rotatably connected between the close ends of the two clamps (201). A type II connector (204) is also rotatably connected between the close ends of the two clamps (201). The type II connector (204) is engaged and sleeved on the outside of the sampler (301).

4. The stratified sampling device for detecting the salt content of saline soil according to claim 1, characterized in that, Each of the aforementioned elastic cutters (303) has a guide channel (3031) in the middle.

5. A stratified sampling device for detecting the salinity of saline soil according to claim 1, characterized in that, The top outer side of the steel reinforcement member (305) is fixed with a positioning block (3051), and the top of the sampler (301) is fixed with a positioning plate (3052). The positioning block (3051) and the positioning plate (3052) are symmetrically distributed.

6. A stratified sampling device for detecting the salinity of saline soil according to claim 2, characterized in that, The top of the steel reinforcement member (305) is welded and fixed with a quick-connect sleeve (3053).

7. A stratified sampling device for detecting the salt content of saline soil according to claim 6, characterized in that, The top of the sampler (301) is screwed with a quick-connect sleeve (404), which is sealed at the top of the storage tube (401) in the direction of the quick-connect sleeve (3053).

8. A stratified sampling device for detecting the salinity of saline soil according to claim 1, characterized in that, Each of the storage tubes (401) is provided with a threaded end (405) at its top, and the storage tubes (401) are connected to each other by the threaded end (405).

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