Multifunctional efficient soil environment sampling and storing device

Abstract

The invention relates to the technical field of soil sampling and storage, and discloses a multifunctional efficient soil environment sampling and storage device, which comprises a central control mechanism as an equipment moving carrier for controlling equipment operation; the drilling driving mechanism is arranged at the top of the central control mechanism and used for providing driving force; the drill rod is arranged at the bottom of the central control mechanism and is used for extending the drilling sampling depth; the spiral rod is arranged on the outer wall of the drill rod in a sleeving mode and used for expanding a drilled soil hole; the external connection ring is mounted on the outer wall of the drill rod and is used for sampling soil at different depths; the drill bit is installed at one end of the drill rod and used for drilling soil. By combining a depth sensor with a soil analytic hierarchy process algorithm, the sampling depth is accurately controlled, and separation and collection of samples in each layer are ensured; the drilling mechanism and the screw rod work cooperatively, so that holes are smooth, and layering disturbance is reduced; the annular array sampling tube can be used for multi-point sampling, so that the scientificity of stratified sampling is improved, and accurate sample data is provided for soil analysis.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling and storage, in particular to a multifunctional and efficient soil environment sampling and storage device. Background Art

[0002] At present, soil sampling devices and storage devices are widely used in geological exploration, agricultural research, environmental monitoring and other fields. Their main function is to obtain soil samples at different depths and store them for subsequent analysis. Common sampling devices usually rely on drilling mechanisms to insert sampling tubes into the target soil layer and collect and extract soil samples mechanically or by vacuum principles. Storage devices are mainly sealed containers, which are used to protect the basic physical and chemical properties of samples and prevent samples from being disturbed by the external environment during transportation and storage. These devices have accumulated rich experience and technology in sampling and storage, providing important support for soil analysis.

[0003] In publication number CN112504727A, a soil sampling device is provided, including a frame, a sampling tube, an upper and lower driving mechanism, a rotating driving mechanism and a matching electronic control unit; the sampling tube is installed on the rotating driving mechanism for self-rotation and soil sampling; the upper and lower driving mechanism is installed on the frame for driving the rotating driving mechanism to move up and down in the vertical direction; the rotating driving mechanism is installed on the upper and lower driving mechanism for driving the sampling tube to self-rotate; the electronic control unit is electrically connected to the upper and lower driving mechanism and the rotating driving mechanism respectively. Although the device is also a device for soil sampling, it is not equipped with a depth sensor and cannot monitor the sampling depth in real time, which may lead to stratified sampling errors; in addition, the soil sampled by the device is easily affected by external pollution or environment during storage and transportation, resulting in data deviation. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a multifunctional and efficient soil environment sampling and storage device, which solves the problems of inaccurate depth control during stratified sampling, easy mixing of samples, and susceptibility to external contamination during collection and storage of samples in the existing soil sampling devices.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multifunctional and efficient soil environment sampling device, comprising:

[0006] The central control mechanism, which serves as a mobile carrier for the equipment and is used to control the operation of the equipment;

[0007] A drilling drive mechanism, which is arranged on the top of the central control mechanism and is used to provide driving force;

[0008] A drill rod, which is arranged at the bottom of the central control mechanism and is used for extending the drilling sampling depth;

[0009] A spiral rod, which is sleeved on the outer wall of the drill rod and is used to expand the soil hole being drilled;

[0010] An external connecting ring, which is mounted on the outer wall of the drill pipe and is used to sample soil at different depths;

[0011] A drill bit, which is mounted at one end of a drill rod and is used to drill the soil;

[0012] The external ring includes a fixed shell, a depth sensor is arranged inside the fixed shell, and the depth sensor is used for depth detection through a soil layer analysis algorithm. A motor is arranged inside the fixed shell, and rotating shafts distributed in a circular array rotate inside the fixed shell. The output end of the motor is fixed to one end of the rotating shaft, and gears are fixed to the outer wall of the rotating shaft.

[0013] Preferably, a plurality of sampling tubes are slidably arranged inside the fixed shell, the sampling tubes correspond to the positions of the rotating shafts one by one, and are also distributed in a circular array with the outer ring as the center. Racks are fixed to the outer walls of the sampling tubes, and the racks are meshed with gears.

[0014] Preferably, a gear ring rotates inside the fixed shell, and the gear ring is meshed with the gears.

[0015] Preferably, a switch valve is provided at one end of the sampling tube, which is used to close the sampling tube after the sampling is completed.

[0016] A multifunctional and efficient soil environment storage device comprises a storage tank, wherein the storage tank comprises a protective shell, an inner ring is arranged on one side of the protective shell, and the protective shell cooperates with the inner ring to form a heat-insulating space.

[0017] Preferably, a connecting groove is provided inside the inner ring, and a second switch valve is provided inside the connecting groove, which is used to close the equipment port after the sampled soil is put in.

[0018] Preferably, a vacuum pump is provided inside the protective shell, which is used to transport the soil directly through the air pressure difference when the equipment samples the soil for storage.

[0019] Preferably, the outer wall of the protective shell is provided with a plurality of heating rings, which are used to perform segmented temperature storage of the stratified layers according to soil preservation conditions.

[0020] The present invention provides a multifunctional and efficient soil environment sampling and storage device, which has the following beneficial effects:

[0021] 1. The present invention combines a depth sensor with a soil layer analysis algorithm to accurately control the sampling depth according to the physical characteristics of the target soil layer, ensuring the separate collection of samples from each layer. The synchronous operation of the drilling drive mechanism and the spiral rod makes the drilling hole structure flat and avoids disturbance of the original soil stratification. The annular array design of the sampling tube can perform multi-point sampling at the same depth, further improving the scientific nature of stratified sampling. This design is particularly suitable for geological surveys, agricultural research and soil pollution analysis, and can provide accurate stratified sample data for subsequent research.

[0022] 2. The present invention realizes pollution-free operation of soil samples from collection to storage through the closed design of the sampling tube in conjunction with the switch valve 1 and the switch valve 2. After the sample is collected, the switch valve 1 immediately closes the sampling tube to effectively isolate the external environment and prevent the sample from being contaminated by air or other external factors. During the sample storage stage, the closed and heat-insulating space formed by the vacuum pump extracting air further protects the physical and chemical properties of the sample. This closed design ensures the original state of the soil sample and provides a reliable basis for scientific research. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of the sampling device of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal structure of the outer connecting ring of the present invention;

[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 This is a distribution diagram of the internal structure of the sampling tube of the present invention;

[0027] Figure 5 for Figure 1 Enlarged view of point B in the middle;

[0028] Figure 6 is a three-dimensional diagram of the storage device of the present invention;

[0029] Figure 7 This is a distribution diagram of the internal structure of the storage tank of the present invention;

[0030] Figure 8 It is a schematic diagram of the operation flow of the present invention.

[0031] Among them, 1. central control mechanism; 2. drilling drive mechanism; 3. drill rod; 4. spiral rod; 5. external ring; 6. drill bit; 7. storage tank; 51. motor; 52. gear ring; 53. rotating shaft; 54. gear; 55. rack; 56. sampling tube; 57. switch valve 1; 58. fixed shell; 59. depth sensor; 71. protective shell; 72. vacuum pump; 73. inner ring; 74. connecting groove; 75. switch valve 2; 76. heating ring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1:

[0034] Please see attached Figure 1 -Attached Figure 5 The embodiment of the present invention provides a multifunctional and efficient soil environment sampling device, comprising:

[0035] The central control mechanism 1, which serves as a mobile carrier of the equipment and is used to control the operation of the equipment;

[0036] A drilling drive mechanism 2, which is arranged on the top of the central control mechanism 1 and is used to provide driving force;

[0037] A drill rod 3, which is arranged at the bottom of the central control mechanism 1 and is used for extending the drilling sampling depth;

[0038] The spiral rod 4 is sleeved on the outer wall of the drill rod 3 and is used to expand the soil hole being drilled;

[0039] An external connecting ring 5, which is mounted on the outer wall of the drill rod 3 and is used to sample soil at different depths;

[0040] A drill bit 6, which is mounted at one end of the drill rod 3 and is used to drill the soil;

[0041] The external ring 5 includes a fixed shell 58, and a depth sensor 59 is arranged inside the fixed shell 58, which is used to perform depth detection through a soil layer analysis algorithm. A motor 51 is arranged inside the fixed shell 58, and a rotating shaft 53 distributed in a ring array rotates inside the fixed shell 58. The output end of the motor 51 is fixed to one end of a rotating shaft 53, and a gear 54 is fixed to the outer wall of the rotating shaft 53. A plurality of sampling tubes 56 are slid inside the fixed shell 58, and the sampling tubes 56 correspond to the positions of the rotating shaft 53 one by one, and are also distributed in a ring array with the external ring 5 as the center. Racks 55 are fixed to the outer walls of the sampling tubes 56, and the racks 55 are meshed with the gears 54, and the gear rings 52 are meshed with the gears 54. A switch valve 57 is arranged at one end of the sampling tube 56, which is used to close the sampling tube 56 after sampling is completed.

[0042] Specifically, after determining the target sampling location, the central control mechanism 1 accurately controls the movement of the entire device so that it can smoothly reach the predetermined position. After the equipment is in place, the drilling drive mechanism 2 is immediately started, driving the drill rod 3 to extend downward, and driving the drill bit 6 to enter the drilling state. At this time, the drill bit 6 starts to drill efficiently, and the soil generated during the drilling process will be gradually discharged through the hollow structure inside the drill rod 3 due to the extrusion force. At the same time, the spiral rod 4 also starts to rotate synchronously. Its function is to expand the hole formed by the drilling of the drill bit 6 and further smooth and trim its inner wall to ensure the integrity and standardization of the sampling channel.

[0043] During the drilling process, each depth sensor 59 monitors the current drilling depth in real time. The depth sensor 59 can monitor and analyze the physical characteristics of the target soil layer in real time through the built-in soil layer analysis algorithm. This algorithm is based on a preset soil layer model and achieves precise control of the sampling depth by accurately identifying soil density, hardness and other parameters, as shown below:

[0044]

[0045] Among them, D * To determine the depth when reaching the target soil layer, t * is the time point when the drilling time reaches the target soil layer, L threshold is the preset threshold of the soil layer determination factor, which is set based on empirical data, Δ∈ threshold is the allowable deviation threshold of density difference.

[0046] The specific working logic is as follows:

[0047] The current depth D is calculated in real time by integrating the drilling speed.

[0048] Determine whether the soil layer determination factor L reaches the threshold L threshold .

[0049] Verify whether the density difference factor Δ∈ is within the allowable range Δ∈ threshold Inside.

[0050] When all the above conditions are met, record the current depth D * , and stop drilling to confirm sampling.

[0051] The maximum measurement range of the depth sensor 59 is 0 meters to 5 meters, the resolution is ±0.1mm, and the response time is 10 milliseconds. It is suitable for real-time monitoring. The operating temperature range is -20℃ to 50℃, and the humidity adaptation range is 0% to 95%. In order to better adapt to the operation, the vibration resistance of the depth sensor 59 complies with the IEC60068-2-64 standard.

[0052] When the depth sensor 59 detects that the drilling equipment has reached the set soil layer depth, it will transmit a signal to the central control mechanism 1, thereby triggering the subsequent sampling process. The application of this technology not only improves the accuracy of sampling, but also effectively avoids sample deviations caused by depth errors, ensuring the scientificity and reliability of soil sampling. When a sensor reaches the specified depth, a rotating shaft 53 starts to rotate through the precise drive of the motor 51. The rotation of the rotating shaft 53 will drive the gear 54 to move synchronously, and then the gear ring 52 will start to rotate in an orderly manner through the gear 54 transmission system. During the rotation process, the gear ring 52 further drives other rotating shafts 53 and corresponding gears 54 to rotate synchronously. This systematic linkage enables all gears 54 to simultaneously drive the corresponding racks 55 for linear displacement.

[0053] The movement of the rack 55 will push the annular array sampling tubes 56 distributed on the equipment to extend outward smoothly. At this time, the switch valve 1 57 is in the open state, ensuring that the sampling tube 56 can smoothly enter the soil. When the sampling tube 56 penetrates into the soil layer of the target depth, the sampling tube 56 will gradually fill the soil into it, and the sampling process is completed. Subsequently, the switch valve 1 57 is quickly switched to the closed state to seal the sampling tube 56, thereby ensuring the integrity and reliability of the soil sample. At this point, the sampling operation is completed efficiently, and the mechanical operation of the entire process is precise and smooth, ensuring the seamless connection of each step.

[0054] The sampling tube 56 is made of high-strength stainless steel, which has excellent corrosion resistance and mechanical strength and is suitable for various complex soil environments. The gear 54 and the rack 55 are designed with a spur gear with a module of 2. The gear 54 is made of carburized steel, which has been quenched to a hardness of HRC58-62, ensuring the stability and durability of the operating system composed of the gear 54 and the rack 55 under high load.

[0055] Embodiment 2:

[0056] Please see attached Figure 6 -Attached Figure 8A multifunctional and efficient soil environment storage device includes a storage tank 7. The storage tank 7 includes a protective shell 71. An inner ring 73 is provided on one side of the protective shell 71. The protective shell 71 cooperates with the inner ring 73 to form a heat preservation space. A connecting groove 74 is provided inside the inner ring 73. A switch valve 75 is provided inside the connecting groove 74, which is used to close the device port after the sampled soil is put in. A vacuum pump 72 is provided inside the protective shell 71, which is used to directly transport the soil through the air pressure difference when the device is storing sampled soil. A plurality of heating rings 76 are provided on the outer wall of the protective shell 71, which are used to store the stratified soil in segmented temperatures according to the soil preservation conditions.

[0057] Specifically, after completing the corresponding soil sampling operation, the central control mechanism 1 is precisely driven to the upper position of the storage tank 7. At this time, the drill rod 3 performs normal extension movement according to the preset instructions, but no longer performs drilling operations. The extended drill rod 3 drives the external ring 5 to move synchronously, and accurately docks the sampling tube 56 with the connecting groove 74 on the storage tank 7. In this process, the system's high-precision positioning mechanism ensures that the sampling tube 56 is completely aligned with the connecting groove 74 to avoid any misalignment or damage.

[0058] When the sampling tube 56 is accurately inserted into the connecting groove 74, its end further extends into the insulation space formed by the protective shell 71 and the inner ring 73. This insulation space adopts a strict design, which can effectively isolate the influence of the external environment and ensure that the physical properties of the sample are not disturbed by the outside world. At the same time, the vacuum pump 72 is quickly started, and the pressure in the insulation space is reduced to 0.01 MPa within 5 minutes at a pumping rate of 5 liters / minute, forming a significant air pressure difference. This pressure difference causes the soil sample inside the sampling tube 56 to be quickly transported to the storage tank 7. The whole process is efficient and smooth, and its noise level is ≤45db, which is suitable for indoor environments. At the same time, the adaptive operating temperature of the vacuum pump 72 is between 0°C and 50°C, which coincides with the temperature control range of the heating ring 76, so it will not be affected by constant temperature control.

[0059] After the sample delivery is completed, the sampling tube 56 begins to evacuate the connection groove 74 in an orderly manner. The evacuation process is precisely controlled by the equipment to ensure that the sampling tube 56 does not cause damage to the connection groove 74 and avoids the sample from being disturbed again. After the sampling tube 56 is completely separated from the connection groove 74, the switch valve 2 75 is automatically closed to completely seal the interior of the storage tank 7. This sealing action effectively prevents the sample from being affected by external pollution or climatic factors, ensuring the authenticity and preservation quality of the sample. At the same time, the heating ring 76 starts to work and controls the temperature at 5°C to 50°C.

[0060] The entire operation process is seamlessly connected. Through the precise control of the central control mechanism 1 and the coordinated cooperation of other components, efficient transportation and protection of samples from sampling to storage are achieved. The stored samples have a sealed space and cooperate with the vacuum pump 72 to extract oxygen, so that the oxygen content is reduced to less than 10% of normal conditions. In this way, the vacuum environment achieved by sealing and reducing oxygen reduces the water volatilization rate, and the water loss of the sample is less than 2%, which is more than 90% less than ordinary storage. At the same time, the heating ring 76 can also perform real-time temperature adjustment to prevent external temperature changes from affecting the storage of samples 1.

[0061] Embodiment three:

[0062] Practical application scenarios

[0063] Scenario 1: Agricultural pollution monitoring

[0064] question:

[0065] Soil pollution monitoring in agricultural land requires analysis of samples at different depths, but existing equipment has large sampling errors, affecting the accuracy of monitoring results.

[0066] Application of the present invention:

[0067] By using the device of the present invention, multi-layer soil samples within a range of 0-2 meters can be efficiently collected, and the independence of each layer of samples can be ensured.

[0068] The data show that the stratification accuracy of samples collected using the equipment of the present invention reaches 99.8%, supporting accurate pollution source analysis.

[0069] Scenario 2: Geological Exploration

[0070] question:

[0071] Geological exploration requires collecting soil samples at different depths for component analysis, but existing equipment is inefficient and has large errors.

[0072] Application of the present invention:

[0073] This equipment can collect samples at multiple depths at one time, reducing workload and time and improving exploration efficiency.

[0074] In a certain mining exploration project, the equipment of the present invention reduced the sample collection time from the original 3 hours to 1 hour.

[0075] Scenario 3: Environmental Monitoring

[0076] question:

[0077] In environmental monitoring projects, the storage conditions of soil samples are required to be extremely high, but existing storage devices cannot ensure the original state of the samples.

[0078] Application of the present invention:

[0079] Use vacuum storage and temperature control functions to ensure the stability of the physical and chemical properties of the samples and prevent oxidation and moisture loss.

[0080] Long-term storage experiments show that the properties of samples stored in this device have no obvious changes after 30 days, while samples stored in traditional devices have shown obvious oxidation.

[0081] 5. Summary of comprehensive advantages

[0082] The present invention is significantly superior to traditional technologies in terms of stratification accuracy, sampling efficiency and adaptability. The specific advantages are as follows:

[0083] Accuracy: Depth error is less than 1 mm and stratified sampling error is zero.

[0084] Efficiency: Sampling time is shortened by more than 60%, and multiple layers of samples can be collected at one time.

[0085] Adaptability: The modular design adapts to different soil types and sampling scenarios, and the storage function comprehensively improves the sample quality protection capability.

[0086] By combining experimental data and application scenario descriptions, the present invention not only meets the industry's demand for high-precision and high-efficiency sampling equipment, but also improves the reliability and convenience of research and monitoring work.

[0087] Example 4: Stratified Sampling Accuracy Test

[0088] Purpose of the test:

[0089] Verify the stratified sampling accuracy and adaptability of the equipment in complex soil environments, and conduct comparative analysis with traditional equipment.

[0090] Test conditions:

[0091] Test location: frozen soil (-10℃), moist soil (humidity 90%), and hard clay.

[0092] Test depth: 0-2 meters, divided into 5 levels (each level is 0.4 meters apart).

[0093] Test equipment: the multifunctional soil sampling device of the present invention (depth sensor resolution ±0.1 mm) and the traditional manual sampling equipment.

[0094] Test frequency: Each soil environment was sampled 20 times.

[0095] Test method:

[0096] The equipment was used to sample at depths of 0.4 m, 0.8 m, 1.2 m, 1.6 m, and 2.0 m.

[0097] The depth of each soil sample was recorded and the integrity of the sampling layers was analyzed (whether mixed layers were present).

[0098] The depth error, sampling efficiency (number of samples completed per unit time) and sample integrity of each device were compared.

[0099] Test results:

[0100]

[0101] Test conclusion:

[0102] The sampling accuracy of the device of the present invention in complex environments is significantly better than that of traditional devices, the stratification error is small, the sampling efficiency is improved by more than 50%, and it is suitable for a variety of complex soil environments.

[0103] Example 5: Long-term storage pollution protection test

[0104] Purpose of the test:

[0105] Verify the long-term protection effect of vacuum storage and temperature control functions on the physical and chemical properties of soil samples and compare them with ordinary sealed containers.

[0106] Test conditions:

[0107] Test environment: high temperature (50°C), high humidity (95%), normal temperature (25°C).

[0108] Test samples: sandy soil, clay soil, organic soil, 50 grams each.

[0109] Storage equipment: the vacuum storage device of the present invention (vacuum degree -0.08MPa, heating ring temperature control range 10°C-40°C) and an ordinary sealed container.

[0110] Testing period: 30 days.

[0111] Test method:

[0112] The soil samples were divided into groups and stored in the device of the present invention and in ordinary sealed containers, respectively.

[0113] The samples were tested for oxidation degree (color change, chemical composition change), moisture content, and temperature stability every 10 days.

[0114] Compare the effects of different storage methods on the physicochemical properties of samples.

[0115] Test results:

[0116] Test indicators The device of the present invention Ordinary sealed container Oxidation degree (after 30 days) No significant change (<1%) Significant change (>10%) Moisture content changes <2％ >15％ Temperature stability Fluctuation ±1℃ Fluctuation ±5℃

[0117] Test conclusion:

[0118] The device of the present invention significantly reduces sample oxidation and water loss under high temperature and high humidity conditions, and its long-term storage performance is better than that of ordinary sealed containers.

[0119] Example 6: Prior art comparative test

[0120] Purpose of the test:

[0121] The comprehensive performance of the device of the present invention and the existing patent technology (CN112504727A) in actual sampling and storage is compared.

[0122] Test conditions:

[0123] Test environment: frozen soil (-10℃) and normal temperature soil (25℃).

[0124] Test equipment: equipment of the present invention and equipment of the prior art.

[0125] Test content: Test stratified sampling accuracy, sampling efficiency, and sample contamination protection capabilities.

[0126] Test method:

[0127] Both devices were operated under the same conditions for multi-layer soil sampling from 0 to 2 m.

[0128] Measure the depth error and layer completeness of each layer sampled.

[0129] After storage, the samples were tested for contamination (oxidation, changes in chemical composition).

[0130] Test results:

[0131]

[0132] Test conclusion:

[0133] Compared with the existing technology, the equipment of the present invention shows comprehensive advantages in stratified sampling accuracy, efficiency and sample storage protection, especially in extreme environments, further demonstrating its innovation and reliability.

[0134] Through Example 6, the differences between the device of the present invention and the prior art device can be more intuitively compared, providing stronger support for the innovation and practical application effect of the patented technology.

[0135] Working principle: After determining the required sampling location, the central control mechanism 1 controls the overall movement of the equipment. After reaching the specified location, the drilling drive mechanism 2 starts to drive the drill rod 3 to drive the drill bit 6 to extend downward. At this time, the drill bit 6 starts drilling, and the drilled soil will be discharged from the hollow position inside the drill rod 3 due to extrusion. While the drill bit 6 is drilling, the spiral rod 4 will also start to rotate, thereby expanding and leveling the hole drilled by the drill bit 6. After the depth of each depth sensor 59 reaches the corresponding position, the motor 51 can be used to drive one of the rotating shafts 53 to rotate, so that the corresponding rotating shaft 53 drives the gear 54 to rotate synchronously, and then drives the gear ring 52 to start rotating. When the gear ring 52 rotates, it will drive the other rotating shafts 53 to drive the gears 54 to rotate synchronously, so that all the gears 54 can drive the corresponding racks 55 to move, and the racks 55 will drive the sampling tubes 56 distributed in a ring array to extend outward. When the sampling tube 56 is extended outward, it will be squeezed into the soil at the corresponding depth, so that the sampling tube 56 is filled with soil. At this time, the switch valve 1 57 is driven to close the sampling tube 56 to complete the sampling operation. After the corresponding soil sampling is completed, the central control mechanism 1 is driven to reach the top of the storage tank 7. At this time, the drill rod 3 is extended normally, but no drilling operation is performed. The extended drill rod 3 drives the external ring 5 to move so that the sampling tube 56 is aligned with the position of the connecting groove 74. At this time, the sampling operation is continued, so that the sampling tube 56 can be inserted into the connecting groove 74 and extend to the insulation space formed by the protective shell 71 and the inner ring 73. At this time, the insulation space is then extracted by the vacuum pump 72, so that the sampled soil in the sampling tube 56 is transported in due to the effect of the air pressure difference. At this time, the sampling tube 56 begins to evacuate the position of the connecting groove 74, and the switch valve 2 75 begins to close, so that the sampled soil will not be contaminated.

[0136] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Multifunctional and efficient soil environment sampling device, characterized in that: include: The central control mechanism (1) serves as a mobile carrier of the equipment and is used to control the operation of the equipment; A drilling drive mechanism (2), which is arranged on the top of the central control mechanism (1) and is used to provide driving force; A drill rod (3), which is arranged at the bottom of the central control mechanism (1) and is used for extending the drilling sampling depth; A spiral rod (4) is sleeved on the outer wall of the drill rod (3) and is used to expand the soil hole being drilled; An external connecting ring (5) is mounted on the outer wall of the drill rod (3) and is used to sample soil at different depths; A drill bit (6) mounted on one end of the drill rod (3) for drilling the soil; The external connecting ring (5) comprises a fixed shell (58), a depth sensor (59) is arranged inside the fixed shell (58) and is used for performing depth detection through a soil layer analysis algorithm, a motor (51) is arranged inside the fixed shell (58), rotating shafts (53) distributed in a ring array rotate inside the fixed shell (58), an output end of the motor (51) is fixed to one end of the rotating shaft (53), and a gear (54) is fixed to the outer wall of the rotating shaft (53).

2. The multifunctional and efficient soil environment sampling device according to claim 1 is characterized in that: A plurality of sampling tubes (56) are slidably mounted inside the fixed shell (58). The sampling tubes (56) correspond to the positions of the rotating shafts (53) one by one and are also distributed in a circular array with the outer ring (5) as the center. Racks (55) are fixed to the outer walls of the sampling tubes (56), and the racks (55) are meshed with the gears (54).

3. The multifunctional and efficient soil environment sampling device according to claim 1 is characterized in that: A toothed ring (52) is rotatably disposed inside the fixed housing (58), and the toothed ring (52) is meshed with a gear (54).

4. The multifunctional and efficient soil environment sampling device according to claim 2 is characterized in that: A switch valve (57) is provided at one end of the sampling tube (56) for closing the sampling tube (56) after sampling is completed.

5. A multifunctional and efficient soil environment storage device, according to any one of claims 1 to 4, comprising a storage tank (7), characterized in that: The storage tank (7) comprises a protective shell (71), one side of the protective shell (71) is provided with an inner ring (73), and the protective shell (71) and the inner ring (73) cooperate to form a heat-insulating space.

6. The multifunctional and efficient soil environment storage device according to claim 5 is characterized in that: A connecting groove (74) is provided inside the inner ring (73), and a second switch valve (75) is provided inside the connecting groove (74) for closing the equipment port after the sampled soil is placed therein.

7. The multifunctional and efficient soil environment storage device according to claim 5, characterized in that: A vacuum pump (72) is arranged inside the protective shell (71) and is used to directly transport soil through air pressure difference when the device is sampling soil for storage.

8. The multifunctional and efficient soil environment storage device according to claim 5, characterized in that: The outer wall of the protective shell (71) is provided with a plurality of heating rings (76) for performing segmented temperature storage of layered soil according to soil preservation conditions.

Images