A geological exploration soil sampling device

Abstract

The present invention discloses a geological exploration soil sampling device, which relates to the technical field of soil sampling; it includes a sampling drill barrel part, on which a negative pressure suction part is installed, and the negative pressure suction part is used to suck the soil sample inside the sampling drill barrel part; an acid-base detection part is installed on the sampling drill barrel part; a traction control part is installed on the sampling drill barrel part, and the traction control part is connected to the acid-base detection part; the traction control part is used to traction the acid-base detection part to switch the detection sample; a detection solution preparation part is installed inside the sampling drill barrel part; the suction sleeve can be used for negative pressure suction work, and the effect of negative pressure can prevent water leakage when the structure samples collapsible or swampy soil; to solve the problems that the current soil sampling device is not convenient for separating and sampling the soil sample in the center of the sampler and is not convenient for negative pressure anti-seepage proposed in the above background technology.

Description

Technical Field

[0001] The present invention relates to the technical field of soil sampling, and specifically to a soil sampling device for geological exploration. Background Art

[0002] In actual geological exploration work, it is necessary to sample the soil on the ground to facilitate subsequent relevant detection work. Different types of soil are involved in soil detection work, such as collapsible terrain, etc. It is necessary to ensure the quality of the sampled samples and avoid sample contamination. In the sampling work of soil samples for heavy metal and plastic pollution detection, it is not suitable to use traditional cylindrical samplers. Usually, a wooden shovel is used for excavation and sampling to prevent the metal sampler from possibly containing heavy metals, which will contaminate the soil sample. The introduced exogenous heavy metals will affect the accuracy of the detection results. Currently, the soil sampling device is not convenient for separating and sampling the soil sample in the center of the sampler. The soil near the inner wall of the sampler is likely to affect the accuracy of the detection results. At the same time, it is not convenient for negative pressure anti-seepage. The soil sample with higher humidity is likely to cause heavy metals to mix into the soil sample due to the water penetration of the soil sample, further affecting the detection accuracy. At the same time, it is not convenient for the staff to directly use negative pressure to detect the pH value of the soil sample, increasing the subsequent detection process. At the same time, factors such as air drying after the soil sample is taken out are also likely to affect the accuracy of the pH value. The soil pH value detection is not comprehensive enough and requires cumbersome solution preparation.

[0003] Therefore, we propose a soil sampling device for geological exploration. Summary of the Invention

[0004] The purpose of the present invention is to provide a soil sampling device for geological exploration to solve the problems that the current soil sampling device is not convenient for separating and sampling the soil sample in the center of the sampler and is not convenient for negative pressure anti-seepage mentioned in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A soil sampling device for geological exploration, including a sampling drill cylinder part, a negative pressure suction part is installed on the sampling drill cylinder part, and the negative pressure suction part is used to suck the soil sample inside the sampling drill cylinder part; an acid-base detection part is installed on the sampling drill cylinder part; a traction control part is installed on the sampling drill cylinder part, and the traction control part is connected to the acid-base detection part; the traction control part is used to traction the acid-base detection part to switch the detection sample; a detection solution preparation part is installed inside the sampling drill cylinder part; the detection solution preparation part is used to humidify and soak the soil sample inside the sampling drill cylinder part; a sample discharging part is installed on the negative pressure suction part, and a bamboo scraping part is installed on the sample discharging part; the bamboo scraping part is used to prevent heavy metal residues from interfering with the sample accuracy; the sampling drill cylinder part includes: a sampling drill cylinder, moisture discharge holes and an isolation cotton pad, twenty rows of moisture discharge holes are opened on the sampling drill cylinder; an isolation cotton pad is fixedly sleeved on the sampling drill cylinder; the isolation cotton pad is used to filter soil impurities.

[0006] Preferably, the bamboo scraping member includes: a bamboo tube and bamboo slices. The bamboo tube is rotatably sleeved on the inner ring; the top of the bamboo tube is of an inclined surface structure; the bamboo slices are slidably inserted into the bamboo tube; the top of the bamboo slices is of an arc structure; a rubber sleeve is sleeved at the bottom of the bamboo tube; the bamboo tube is used for discharging the soil sample located at the center of the sampling drill tube.

[0007] Preferably, the negative pressure suction member includes: a suction sleeve, a ventilation groove, a detachable tube and an air intake pipe. The suction sleeve is fixedly sleeved on the sampling drill tube; there is a gap between the inner side of the suction sleeve and the outer side of the sampling drill tube; a circle of ventilation grooves is formed on the inner side of the suction sleeve; the detachable tube is threadedly connected to the suction sleeve; the outer side of the suction sleeve is provided with threads; the suction sleeve is sleeved on the sampling drill tube; an air intake pipe is fixedly installed on the suction sleeve; the air intake pipe is externally connected to a suction pump; the end of the ventilation groove is aligned with the isolation cotton pad, and two handles are provided on the suction sleeve.

[0008] Preferably, the traction control member includes: a driving threaded sleeve, a rotating connection ring and a traction wire. The driving threaded sleeve is threadedly connected to the sampling drill tube; the rotating connection ring is rotatably connected to the driving threaded sleeve; the rotating connection ring is sleeved on the sampling drill tube; six traction wires are fixedly installed on the rotating connection ring, and the six traction wires respectively pass through the suction sleeve; the ends of the six traction wires are respectively fixedly installed on the sliding sleeve; the six traction wires are respectively located between the outer side of the sampling drill tube and the inner side of the detection fixing ring.

[0009] Preferably, the sampling drill tube part further includes: a sample pushing shaft and a pushing disk. The isolation cotton pad is aligned with the moisture discharge hole at the bottom; the sample pushing shaft is slidably sleeved on the sampling drill tube, and a pushing disk is fixedly installed at the front end of the sample pushing shaft; the pushing disk is sleeved inside the sampling drill tube; the end of the sampling drill tube is of a toothed structure.

[0010] Preferably, the sample discharging member further includes: a soil scraping steel sheet and an inner ring. A circle of soil scraping steel sheets is fixedly installed inside the rotating ring, and the rotating ring is used for rotating and scraping the soil sample; an inner ring is fixedly installed inside the circle of soil scraping steel sheets.

[0011] Preferably, the detection solution preparation part includes: a water spraying pipe and a water supply pipe. The water spraying pipe is fixedly sleeved inside the sampling drill tube; a circle of water outlet holes is formed on the side of the water spraying pipe; the water outlet holes of the water spraying pipe correspond to the isolation cotton pad; the water supply pipe is fixedly installed on the water spraying pipe and is embedded in the sampling drill tube; the water spraying pipe is used for spraying water to humidify the soil; the water supply pipe is externally connected to a syringe.

[0012] Preferably, the sample discharging member includes: a docking tube and a rotating ring. The docking tube is threadedly connected to the detachable tube; the rotating ring is rotatably sleeved on the docking tube; the rotating ring is located at the bottom of the sampling drill tube.

[0013] Preferably, the acid-base detection component further includes: a suction communication hole and a pH test strip. Four circles of suction communication holes are provided on the sliding sleeve, and the four circles of suction communication holes are aligned with four circles of grooves provided inside the sliding sleeve; the four circles of suction communication holes are respectively used to connect to the end of the ventilation groove for ventilation; the four circles of suction communication holes are respectively used to align with the isolation cotton pads; pH test strips are respectively pasted in the four circles of grooves inside the suction communication holes, and the pH test strips are used to fit the isolation cotton pads; the pH test strips are used to detect the soil acid-base value.

[0014] Preferably, the acid-base detection component includes: a detection fixing ring, a spring and a sliding sleeve. The detection fixing ring is fixedly installed inside the suction sleeve; a spring is fixedly installed on the detection fixing ring; the spring is located inside the suction sleeve; the end of the spring is fixedly installed with a sliding sleeve; the inner side of the sliding sleeve is hermetically fitted to the outside of the sampling drill barrel; four circles of grooves are provided inside the sliding sleeve.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The present invention uses a suction sleeve to perform negative pressure suction work, and cooperates with the moisture discharge holes to allow air flow. By the action of negative pressure, it can prevent water leakage when sampling collapsible or swampy soil. Using negative pressure, the sampled soil can be sucked, and the soil inside the sampling drill barrel can be sucked out of water from the inside to the outside, which can prevent water from leaking and mixing under the action of gravity, improve the sampling quality, and prevent heavy metal pollution of the soil.

[0017] The traction control component can cooperate with the acid-base detection component to quickly adjust the use height of the acid-base detection component, that is, switch different pH test strips, ensure the comprehensiveness and accuracy of data, and prevent data deviation caused by fewer test strips. Using the acid-base detection component can facilitate the staff to automatically detect the acidity and alkalinity of the soil underground when sampling the soil. This structure uses a direct underground detection method, which is more direct, can avoid the problem that the soil is easily air-dried when taking out the soil sample for subsequent detection and the need for manual preparation of solutions for detection. This structure is more practical, can freely control the detection height, and the detection area is more accurate. At the same time, this structure performs real-time detection during the process of sampling and drilling the soil, ensuring the comprehensiveness of detection, and the detection area is the sampling depth.

[0018] Using the detection solution preparation part can facilitate the water replenishment work for relatively dry soil, ensure the smooth progress of the acid-base value detection, and ensure the versatility of this structure.

[0019] Using a bamboo scraping part in cooperation with a nesting part, while not affecting the normal discharge of samples by this structure, this structure can perform targeted sampling on the central part of the soil. Using a bamboo scraping part can prevent heavy metal interference. With a bamboo tube and bamboo slices, the operation is simple and it is convenient to replace, and the usage cost of the structure is low. Description of the Drawings

[0020] Figure 1 Schematic diagram of the overall structure of the present invention;

[0021] Figure 2 Schematic diagram of the bottom structure of the present invention;

[0022] Figure 3 Cross-sectional view of the internal structure of the present invention;

[0023] Figure 4 Schematic diagram of the sampling drill tube part structure of the present invention;

[0024] Figure 5 Schematic diagram of the negative pressure suction part structure of the present invention;

[0025] Figure 6 Schematic diagram of the installation position of the acid-base detection part of the present invention;

[0026] Figure 7 Schematic diagram of the internal structure of the acid-base detection part of the present invention;

[0027] Figure 8 For the present invention Figure 3 Enlarged view of the structure in area B of the present invention;

[0028] Figure 9 For the present invention Figure 6 Enlarged view of the structure in area C of the present invention;

[0029] Figure 10 Schematic diagram of the structure of the detection solution preparation part of the present invention;

[0030] Figure 11 For the present invention Figure 2 Enlarged view of the structure in area D of the present invention;

[0031] Figure 12 Schematic diagram of the bamboo scraping part structure of the present invention.

[0032] In the figure: 1. Sampling drill barrel part; 101. Sampling drill barrel; 1011. Moisture discharge hole; 1012. Isolation cotton pad; 102. Sample pushing shaft; 1021. Pushing disc; 2. Negative pressure suction part; 201. Suction sleeve; 2011. Ventilation groove; 202. Removable cylinder; 203. Connecting air pipe; 3. Acid-base detection part; 301. Detection fixing ring; 302. Spring; 303. Sliding sleeve; 3011. Suction communication hole; 304. pH test strip; 4. Traction control part; 401. Driving thread sleeve; 402. Rotary connecting ring; 403. Traction steel wire; 5. Detection solution preparation part; 501. Water spray pipe; 502. Water supply pipe; 6. Sample discharging part; 601. Docking cylinder; 602. Rotary ring; 603. Soil scraping steel sheet; 604. Inner ring; 7. Bamboo scraping part; 701. Bamboo tube; 702. Bamboo slice. Detailed implementation mode

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment 1: Please refer to Figures 1 - 12 as shown:

[0035] The present invention provides a technical solution: a geological exploration soil sampling device, including a sampling drill barrel part 1, a negative pressure suction part 2 is installed on the sampling drill barrel part 1, and the negative pressure suction part 2 is used to suck the soil sample inside the sampling drill barrel part 1; an acid-base detection part 3 is installed on the sampling drill barrel part 1; a traction control part 4 is installed on the sampling drill barrel part 1, and the traction control part 4 is connected to the acid-base detection part 3; the traction control part 4 is used to traction the acid-base detection part 3 to switch the detection sample; a detection solution preparation part 5 is installed inside the sampling drill barrel part 1; the detection solution preparation part 5 is used to humidify and soak the soil sample inside the sampling drill barrel part 1; a sample discharging part 6 is installed on the negative pressure suction part 2, and a bamboo scraping part 7 is installed on the sample discharging part 6; the bamboo scraping part 7 is used to prevent heavy metal residues from interfering with the sample accuracy; the sampling drill barrel part 1 includes: a sampling drill barrel 101, a moisture discharge hole 1011 and an isolation cotton pad 1012, twenty rows of moisture discharge holes 1011 are opened on the sampling drill barrel 101; an isolation cotton pad 1012 is fixedly sleeved on the sampling drill barrel 101; the isolation cotton pad 1012 is used to filter soil impurities.

[0036] Among them, the sampling drill barrel part 1 further includes: a sample pushing shaft 102 and a pushing disk 1021, and the isolation cotton pad 1012 is aligned with the moisture discharge hole 1011 at the bottom; a sample pushing shaft 102 is slidably sleeved on the sampling drill barrel 101, and a pushing disk 1021 is fixedly installed at the front end of the sample pushing shaft 102; the pushing disk 1021 is sleeved inside the sampling drill barrel 101; the end of the sampling drill barrel 101 is a toothed structure; the negative pressure suction member 2 includes: a suction sleeve 201, a ventilation groove 2011, a detachable cylinder 202 and an air connecting pipe 203, and the suction sleeve 201 is fixedly sleeved on the sampling drill barrel 101; there is a gap between the inner side of the suction sleeve 201 and the outer side of the sampling drill barrel 101; a circle of ventilation grooves 2011 is opened on the inner side of the suction sleeve 201; the detachable cylinder 202 is threadedly connected to the suction sleeve 201; the outer side of the suction sleeve 201 is provided with threads; the suction sleeve 201 is sleeved on the sampling drill barrel 101; an air connecting pipe 203 is fixedly installed on the suction sleeve 201; the air connecting pipe 203 is externally connected to a suction pump; the end of the ventilation groove 2011 is aligned with the isolation cotton pad 1012, and two handles are provided on the suction sleeve 201. The suction sleeve 201 can be used for negative pressure suction work. Cooperating with the moisture discharge hole 1011, air can flow through. By the action of negative pressure, it can prevent water leakage when this structure samples collapsible or swamp soil. This structure uses negative pressure to suck the sampled soil. The soil inside the sampling drill barrel 101 can be sucked out of moisture from the inside to the outside, which can prevent the moisture from leaking and mixing with each other under the action of gravity. Because in actual sampling, in order to ensure the service life, the sampling drill barrel is mostly a steel barrel. When the sampling drill barrel is pressed down for drilling and sampling, it will rub against the soil, which will contaminate the soil sample. The introduced exogenous heavy metals will affect the accuracy of the test results. Mainly, the soil at the inner wall of the sampling drill barrel 101 is easily contaminated. This structure can use negative pressure to prevent the moisture located at the inner wall of the sampling drill barrel 101 from leaking to the center of the sampling drill barrel 101, causing soil pollution at the center of the sampling drill barrel 101, improving the sampling quality, preventing heavy metal pollution of the soil, and making the subsequent soil heavy metal detection accuracy higher. This structure does not need to use a wooden shovel for sampling, and can ensure the sampling depth; the suction sleeve 201 of this structure can be used to hold and control the sampling drill barrel part 1 for sampling work, cooperate with the sample pushing shaft 102 and the pushing disk 1021, facilitate the quick pushing out of the soil sample, and also use the pushing disk 1021 to scrape the sampling drill barrel 101 to improve the cleanliness of the sampling drill barrel 101.

[0037] Among them, the acid-base detection component 3 includes: a detection fixing ring 301, a spring 302, and a sliding sleeve 303. The detection fixing ring 301 is fixedly installed inside the suction sleeve 201; a spring 302 is fixedly installed on the detection fixing ring 301; the spring 302 is located inside the suction sleeve 201; the end of the spring 302 is fixedly installed with a sliding sleeve 303; the inner side of the sliding sleeve 303 is hermetically attached to the outside of the sampling drill cylinder 101; there are four circles of grooves inside the sliding sleeve 303; the acid-base detection component 3 further includes: a suction communication hole 3011 and a pH test strip 304. Four circles of suction communication holes 3011 are formed on the sliding sleeve 303, and the four circles of suction communication holes 3011 are aligned with the four circles of grooves provided inside the sliding sleeve 303; the four circles of suction communication holes 3011 are respectively used to connect to the end of the ventilation groove 2011 for ventilation; the four circles of suction communication holes 3011 are respectively used to align with the isolation cotton pad 1012; pH test strips 304 are respectively pasted in the four circles of grooves inside the suction communication hole 3011, and the pH test strips 304 are used to fit the isolation cotton pad 1012; the pH test strips 304 are used to detect the soil acid-base value; the traction control component 4 includes: a driving thread sleeve 401, a rotating connection ring 402, and a traction wire 403. The driving thread sleeve 401 is threadedly connected to the sampling drill cylinder 101; a rotating connection ring 402 is rotatably connected to the driving thread sleeve 401; the rotating connection ring 402 is sleeved on the sampling drill cylinder 101; six traction wires 403 are fixedly installed on the rotating connection ring 402, and the six traction wires 403 respectively pass through the suction sleeve 201; the ends of the six traction wires 403 are respectively fixedly installed on the sliding sleeve 303;Six traction steel wires 403 are respectively located between the outside of the sampling drill cylinder 101 and the inside of the detection fixing ring 301. The use of the acid-base detection piece 3 can facilitate the staff to automatically detect the acidity and alkalinity of the soil underground when taking soil samples. This structure uses a direct underground detection method, which is more direct and can avoid the problems that the soil is prone to air drying when the soil sample is taken out for subsequent detection and the need for manual preparation of solutions for detection. This structure is more practical, can freely control the detection height, and the detection area is more accurate. At the same time, this structure detects in real time during the process of sampling and drilling the soil to ensure the comprehensiveness of the detection. The detection area is the sampling depth, avoiding the difficulty of ensuring the detection sample volume by the method of detecting after taking out the soil sample. Usually, only a small part of the soil sample can be taken for solution preparation, and the comprehensiveness of the pH detection is not good. This structure is more suitable for the pH detection of soil with a higher water content, can be more direct and accurate, and the detection is more efficient. The traction control piece 4 can cooperate with the acid-base detection piece 3 to quickly adjust the use height of the acid-base detection piece 3, that is, switch different pH test strips 304. Four pH test strips 304 are used to ensure the comprehensiveness of the data and prevent data deviation caused by fewer test strips. The water is pumped out from the moisture discharge holes 1011. The water pumped out from the bottom moisture discharge holes 1011 will penetrate the isolation cotton pad 1012 and be absorbed and detected by the pH test strip 304. The pH value can be judged by comparing with the color card later. Rotating the driving thread sleeve 401 can drive the pH test strip 304 to move and adjust the position, and the number of pH test strips 304 used can be adjusted. The part of the sampling drill cylinder 101 on the left side of the permeable isolation cotton pad 1012 is not provided with moisture discharge holes 1011. The inner side of the sliding sleeve 303 fits on the outside of the sampling drill cylinder 101. Therefore, the pH test strip 304 on the left side of the permeable isolation cotton pad 1012 will not be penetrated by the permeable isolation cotton pad 1012 with water and will not be used. The number of pH test strips 304 used can be freely adjusted by the staff. After the detachable cylinder 202 is rotated and disassembled, under the extrusion of the spring 302, the sliding sleeve 303 will be pushed out, facilitating the replacement or removal of the pH test strip 304 inside the sliding sleeve 303.;

[0038] Among them, the detection solution preparation part 5 includes: a water spray pipe 501 and a water supply pipe 502. The water spray pipe 501 is fixedly sleeved inside the sampling drill cylinder 101. A circle of water outlet holes is formed on the side of the water spray pipe 501. The water outlet holes of the water spray pipe 501 correspond to the isolation cotton pad 1012. The water supply pipe 502 is fixedly installed on the water spray pipe 501 and is embedded in the sampling drill cylinder 101. The water spray pipe 501 is used to spray water to humidify the soil. The water supply pipe 502 is externally connected to a syringe. The use of the detection solution preparation part 5 can facilitate the water replenishment work in relatively dry soil, ensure the smooth progress of the pH value detection, ensure the versatility of this structure. This structure can uniformly humidify and spray water on the soil, with simple operation. By injecting water through the syringe externally connected to the water supply pipe 502, the subsequent water will be filtered by the permeable isolation cotton pad 1012 and then the pH value is detected, which is more practical. At the same time, the water spray pipe 501 is of a circular structure, which can facilitate humidification on the outside of the soil sample and reduce the humidity impact on the central part of the soil sample.

[0039] Embodiment 2, on the basis of Embodiment 1, the sample arranging part 6 includes: a docking cylinder 601 and a rotating ring 602. The docking cylinder 601 is threadedly connected to the detachable cylinder 202. The rotating ring 602 is rotatably sleeved on the docking cylinder 601. The rotating ring 602 is located at the bottom of the sampling drill cylinder 101. The sample arranging part 6 further includes: a soil scraping steel sheet 603 and an inner ring 604. A circle of soil scraping steel sheets 603 is fixedly installed inside the rotating ring 602, and the rotating ring 602 is used to rotate and scrape the soil sample. An inner ring 604 is fixedly installed inside the circle of soil scraping steel sheets 603. The bamboo scraping part 7 includes: a bamboo tube 701 and a bamboo sheet 702. The bamboo tube 701 is rotatably sleeved on the inner ring 604. The top of the bamboo tube 701 is of an inclined surface structure. The bamboo sheet 702 is slidably inserted into the bamboo tube 701. The top of the bamboo sheet 702 is of an arc structure. A rubber sleeve is sleeved at the bottom of the bamboo tube 701. The bamboo tube 701 is used to discharge the soil sample located at the center of the sampling drill cylinder 101. By using the bamboo scraping part 7 in cooperation with the sample arranging part 6, while not affecting the normal discharge of samples by this structure, this structure can perform targeted sampling on the central part of the soil. The use of the bamboo scraping part 7 can prevent heavy metal interference and prevent the soil attached to the inner wall of the sampling drill cylinder 101 from being taken out for inspection. The content of heavy metals in the soil is directly related to the soil quality. Once the detection result error is caused by the sampling drill cylinder 101, it will have a greater misleading effect on the geological exploration work. This structure uses the bamboo tube 701 and the bamboo sheet 702, with simple operation, convenient replacement at the same time, and low structural use cost. Rotating the bamboo tube 701 drives the bamboo sheet 702 to rotate together, and the soil sample located in the middle of the sampling drill cylinder 101 can be scraped and discharged into a test tube for collection.

[0040] Working principle of this embodiment: First, rotate and disassemble the docking cylinder 601. By starting the suction pump externally connected to the air intake pipe 203, hold the two handles on the suction sleeve 201 at this time, insert the sampling drill cylinder 101 into the ground for sampling. During the process, the moisture discharge holes 1011 continuously suck and discharge outward to prevent moisture mixing and leakage. Subsequently, pushing the sample pushing shaft 102 can drive the pushing disc 1021 to discharge the soil sample. After inserting the sampling drill cylinder 101 into the soil, during the downward sampling process, under the suction of the suction pump externally connected to the air intake pipe 203, in cooperation with the ventilation groove 2011 communicating with the suction connection holes 3011, under negative pressure suction, moisture can be drawn out from the moisture discharge holes 1011. The moisture drawn out from the moisture discharge holes 1011 at the bottom will penetrate the isolation cotton pad 1012 and be absorbed and detected by the pH test strip 304. Subsequently, the pH value can be judged by referring to the color card. Rotating the driving thread sleeve 401 drives the rotating connection ring 402, and using the traction steel wire 403 to traction the sliding sleeve 303 can drive the pH test strip 304 to move and adjust the position, and the number of pH test strips 304 used can be adjusted. After rotating and disassembling the detachable cylinder 202, under the extrusion of the spring 302, the sliding sleeve 303 will be pushed out, facilitating the replacement and removal of the pH test strip 304 inside the sliding sleeve 303. After inserting the sampling drill cylinder 101 into the soil, water can be injected through the syringe externally connected to the water supply pipe 502, or a water pump can also be used for water supply to humidify the soil sample inside the sampling drill cylinder 101. Subsequently, the moisture will be filtered by the isolation cotton pad 1012 and then the pH value will be detected through the pH test strip 304; after the sampling drill cylinder 101 completes sampling, screw the docking cylinder 601 onto the detachable cylinder 202. During the process of discharging the soil sample by pushing the sample pushing shaft 102, insert the sampling test tube into the bamboo tube 701, rotate the rotating ring 602, drive the soil scraping steel sheet 603 to scrape the soil sample, directly scrape and discard the soil sample on the inner wall of the sampling drill cylinder 101. At the same time, rotate the bamboo tube 701 together with the bamboo sheet 702 to rotate, so as to scrape the soil sample in the middle of the sampling drill cylinder 101 and discharge it into the test tube for collection. After the bamboo sheet 702 is severely worn, the bamboo tube 701 can be directly pulled out from the inner ring 604 for replacement.

[0041] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil sampling device for geological survey, comprising a sampling drill barrel (1), wherein a negative pressure suction member (2) is installed on the sampling drill barrel (1), characterized in that: The negative pressure suction component (2) is used to extract soil samples from the sampling drill barrel (1); an acid-base detection component (3) is installed on the sampling drill barrel (1); The sampling drill tube part (1) is equipped with a traction control component (4), and the traction control component (4) is connected to the acid-base detection component (3); the traction control component (4) is used to pull the acid-base detection component (3) to switch the detection sample; A detection solution preparation unit (5) is installed inside the sampling drill tube unit (1); the detection solution preparation unit (5) is used to humidify and soak the soil sample inside the sampling drill tube unit (1); The negative pressure suction member (2) is provided with a sample removal member (6), and the sample removal member (6) is provided with a bamboo scraping member (7); the bamboo scraping member (7) is used to prevent heavy metal residues from interfering with sample accuracy; The sampling drill barrel part (1) comprises: a sampling drill barrel (101), dehumidification holes (1011) and an isolation cotton pad (1012); twenty rows of dehumidification holes (1011) are provided on the sampling drill barrel (101); an isolation cotton pad (1012) is fixedly sleeved on the sampling drill barrel (101); and the isolation cotton pad (1012) is used for filtering soil impurities.

2. A geological survey soil sampling device according to claim 1, characterized in that: The sampling drill tube part (1) further comprises: a sample pushing shaft (102) and a propulsion disc (1021); the isolation cotton pad (1012) is aligned with the moisture drainage hole (1011) at the bottom; the sample pushing shaft (102) is slidably sleeved on the sampling drill tube (101), and the propulsion disc (1021) is fixedly installed at the front end of the sample pushing shaft (102); the propulsion disc (1021) is sleeved inside the sampling drill tube (101); and the end of the sampling drill tube (101) is a toothed structure.

3. A geological survey soil sampling device according to claim 1, characterized in that: The negative pressure suction member (2) comprises: a suction sleeve (201), a ventilation groove (2011), a detachable sleeve (202) and an air connection pipe (203); the suction sleeve (201) is fixedly sleeved on the sampling drill tube (101); a gap is provided between the inner side of the suction sleeve (201) and the outer side of the sampling drill tube (101); a circle of ventilation grooves (2011) is provided on the inner side of the suction sleeve (201); the detachable sleeve (202) is provided with a plurality of air-conducting pipes (203); and the suction sleeve (201) is provided with a plurality of air-conducting pipes (203). ) is threadedly connected to the suction sleeve (201); the outer side of the suction sleeve (201) is provided with a thread; the suction sleeve (201) is sleeved on the sampling drill tube (101); an air connection pipe (203) is fixedly installed on the suction sleeve (201); the air connection pipe (203) is externally connected to a suction pump; the end of the ventilation groove (2011) is aligned with the isolation cotton pad (1012), and two handles are provided on the suction sleeve (201).

4. A geological survey soil sampling device according to claim 3, characterized in that: The acid-base detection component (3) comprises: a detection fixing ring (301), a spring (302) and a sliding sleeve (303); the detection fixing ring (301) is fixedly mounted on the inner side of the suction sleeve (201); the spring (302) is fixedly mounted on the detection fixing ring (301); the spring (302) is located on the inner side of the suction sleeve (201); the sliding sleeve (303) is fixedly mounted on the end of the spring (302); the inner side of the sliding sleeve (303) is sealed against the outer side of the sampling drill tube (101); and the sliding sleeve (303) is provided with four circles of grooves inside.

5. A geological survey soil sampling device according to claim 4, characterized in that: The acid-base detection component (3) further comprises: a suction communication hole (3011) and a pH test strip (304); the sliding sleeve (303) is provided with four circles of suction communication holes (3011), and the four circles of suction communication holes (3011) are aligned with four circles of grooves provided inside the sliding sleeve (303); the four circles of suction communication holes (3011) are respectively used to connect with the ends of the ventilation grooves (2011) for ventilation; the four circles of suction communication holes (3011) are respectively used to align with the isolation cotton pad (1012); the pH test strips (304) are respectively pasted in the four circles of grooves inside the suction communication holes (3011), and the pH test strips (304) are used to fit the isolation cotton pad (1012); the pH test strips (304) are used to detect the pH value of soil.

6. A geological survey soil sampling device according to claim 4, characterized in that: The traction control component (4) comprises: a driving threaded sleeve (401), a rotating connection ring (402) and a traction steel wire (403); the driving threaded sleeve (401) is threadedly connected to the sampling drill tube (101); the driving threaded sleeve (401) is rotatably connected to the rotating connection ring (402); the rotating connection ring (402) is sleeved on the sampling drill tube (101); six traction steel wires (403) are fixedly mounted on the rotating connection ring (402), and the six traction steel wires (403) respectively pass through the suction sleeve (201); the ends of the six traction steel wires (403) are respectively fixedly mounted on the sliding sleeve (303); the six traction steel wires (403) are respectively located between the outer side of the sampling drill tube (101) and the inner side of the detection fixing ring (301).

7. A geological survey soil sampling device according to claim 1, characterized in that: The detection solution preparation unit (5) comprises: a water spray pipe (501) and a water supply pipe (502); the water spray pipe (501) is fixedly sleeved on the inner side of the sampling drill tube (101); a circle of water outlet holes is provided on the side of the water spray pipe (501); the water outlet holes of the water spray pipe (501) correspond to the isolation cotton pad (1012); the water supply pipe (502) is fixedly installed on the water spray pipe (501), and the water supply pipe (502) is embedded in the sampling drill tube (101); the water spray pipe (501) is used for spraying water to humidify the soil; and the water supply pipe (502) is externally connected to a syringe.

8. A geological survey soil sampling device according to claim 3, characterized in that: The sample removal member (6) comprises: a docking sleeve (601) and a rotating ring (602); the docking sleeve (601) is threadedly connected to the detachable sleeve (202); the rotating ring (602) is rotatably sleeved on the docking sleeve (601); and the rotating ring (602) is located at the bottom of the sampling drill tube (101).

9. A geological survey soil sampling device according to claim 8, characterized in that: The sample removal member (6) further comprises: a soil scraping steel sheet (603) and an inner ring (604); a circle of soil scraping steel sheet (603) is fixedly mounted inside the rotating ring (602); the rotating ring (602) is used for rotating and scraping off soil samples; and the inner ring (604) is fixedly mounted inside the circle of soil scraping steel sheet (603).

10. A soil sampling device for geological survey according to claim 9, characterized in that: The bamboo scraping member (7) comprises: a bamboo tube (701) and a bamboo piece (702); the bamboo tube (701) is rotatably sleeved on the inner ring (604); the top of the bamboo tube (701) is an inclined surface structure; the bamboo piece (702) is slidably inserted on the bamboo tube (701); the top of the bamboo piece (702) is an arc structure; the bottom of the bamboo tube (701) is sleeved with a rubber sleeve; the bamboo tube (701) is used to discharge the soil sample located at the center of the sampling drill tube (101).

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