Marine sediment layer sediment sampling device and sampling method

Abstract

The invention relates to the technical field of sediment sampling, in particular to a marine sediment layer sediment sampling device and method.The marine sediment layer sediment sampling device comprises a sampling barrel, a sampling assembly and a preservation assembly.The sampling barrel comprises a lower barrel body and an upper barrel body, and the upper barrel body is composed of a left half barrel body and a right half barrel body; the lower cylinder body, the left half cylinder body and the right half cylinder body are connected through a fixing assembly, a rope assembly is connected between the sampling assembly and the upper cylinder body, one end of the rope assembly is connected to the storage assembly, and the other end of the rope assembly is inserted between the left half cylinder body and the right half cylinder body and is connected with an external rope; by means of the design of the detachable sampling barrel and a rope assembly linkage mechanism, the safety and efficiency of ocean sediment sample collection are effectively improved, it is ensured that the samples are safely recycled when emergencies occur in the complex ocean environment, and the operation risk is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sediment sampling, and in particular to a marine sediment layer sediment sampling device and a sampling method. Background Art

[0002] In marine science research, marine sediments are often an important basis for studying important scientific issues such as marine environmental changes, paleoclimate research, and biogeochemical cycles. Obtaining high-resolution and high-quality marine sediments is of great significance for studying marine geology and ecological environment. Although traditional sediment sampling methods, such as box samplers and column samplers, have certain effects, these methods are limited in operating difficulty, collection depth, and sampling efficiency. Especially when sampling in deep sea or remote waters, more complex technical means and equipment become necessary.

[0003] For example, a marine seabed sediment sampling device with a publication number of CN115452466A relates to the technical field of seabed sediment sampling. The marine seabed sediment sampling device, through a sampling support mechanism, can conveniently enable a sampling frame to stably perform sampling on the seabed with different high frequencies. At the same time, through a sampling sealing mechanism, the sediment sampled by the sampling frame can be conveniently scraped out of the package, and a sampling combination mechanism is used to conveniently combine multiple sampling device bodies, which is convenient for seabed workers to carry and avoid omissions that become seabed garbage.

[0004] Although the above-mentioned prior art realizes the effective sampling of marine sediments, there are still some problems in practical applications. For example, there are a large number of unstable factors in the ocean, such as numerous marine organisms, plants, various types of garbage and other impurities, or encountering natural obstacles such as strong currents and reefs during the sampling process, which may cause the sampling device to be damaged or stuck in the gaps in the sediment layer or in the terrain such as seabed reefs, making it difficult to complete the sampling task, or even impossible to retrieve the sampling device, thereby failing to obtain samples and losing the device.

[0005] Based on this, the above-mentioned prior art still has room for improvement to solve the above-mentioned technical problems. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a marine sediment sampling device and a sampling method.

[0007] In a first aspect, a marine sediment sampling device comprises: The sampling cylinder comprises a lower cylinder and an upper cylinder, the upper cylinder is composed of a left half cylinder and a right half cylinder, the lower cylinder, the left half cylinder and the right half cylinder are connected by a fixing assembly, when the sampling cylinder is disassembled, the fixing assembly releases the fixing of the lower cylinder, the left half cylinder and the right half cylinder are disassembled and separated; The sampling assembly is assembled between the lower cylinder and the upper cylinder, and the lower cylinder has a sampling hole for the sampling assembly to extend out for sampling; A preservation component is arranged in the lower cylinder and is used to preserve the samples obtained by the sampling component. A rope component is connected between the sampling component and the upper cylinder. One end of the rope component is connected to the preservation component, and the other end is inserted between the left half cylinder and the right half cylinder and connected to an external rope. When the sampling cylinder is disassembled, the external rope pulls the preservation component through the rope assembly.

[0008] Preferably, the storage component comprises an annular cylinder, which is constructed as a hollow structure with an open upper end, and an annular cover plate is rotatably covered on the upper end of the annular cylinder.

[0009] Preferably, a plurality of fixed cylinders are installed at equal intervals in the annular cylinder, a storage cylinder for storing samples is arranged in the fixed cylinder, a sealing cover is covered on the upper end of the storage cylinder, a material inlet is opened on the annular cover plate, and a sliding cover is slidably arranged at the material inlet.

[0010] Preferably, two layers of annular plates are provided in the annular cylinder, the two layers of annular plates are passed through the fixed cylinder, a compressed gas storage area is provided between the two annular plates, a gas injection area is provided between the lower annular plate and the bottom of the annular cylinder, the annular cover plate and the upper annular plate are connected by a locking assembly, an air pump is installed on the lower annular plate, and a connecting pipe is provided on the outer wall of the fixed cylinder.

[0011] Preferably, the side wall of the storage cylinder is constructed as a hollow structure, and a valve is provided at the bottom of the hollow structure, and a ejector pin cooperating with the valve is provided at the bottom of the fixed cylinder.

[0012] Preferably, the sampling assembly includes a guide tube, which is slidably inserted in a limiting ring at the sampling hole of the lower cylinder, and a sampling tube is slidably arranged in the guide tube. A horizontal plate is arranged in the right half of the cylinder, and a transverse guide rail is arranged on the horizontal plate. A lifting assembly for controlling the lifting and lowering of the sampling tube is installed on the transverse guide rail.

[0013] Preferably, a transfer plate is provided on the side wall of the upper end of the guide tube, a T-shaped plate is slidably provided on the transfer plate, an extension protrusion is provided at the bottom of the horizontal end of the T-shaped plate, a closing protrusion and a sliding protrusion located at the edge and the middle of the sliding cover are provided, and the extension protrusion is located between the closing protrusion and the sliding protrusion.

[0014] Preferably, a permanent magnet is embedded in the annular cover plate adjacent to the feed inlet, and the sealing cover has the same magnetic properties as the permanent magnet; A permanent magnet is embedded in one end of the horizontal section of the T-shaped plate close to the middle of the sliding cover, and the magnetism of the permanent magnet is opposite to that of the sealing cover.

[0015] Preferably, a plurality of sliding holes are evenly opened in the circumferential direction of the inner side wall of the upper end of the storage cylinder, a clamping strip is arranged in the sliding hole through an elastic member, and a side of the clamping strip away from the elastic member is constructed as a slope structure with an inclined upper end.

[0016] In a second aspect, a method for sampling marine sediments comprises the following steps: The first step is to control the sampling tube to dive to the predetermined seabed sediment layer position through an external rope; In the second step, the sampling component extends out of the sampling hole to collect sediment layer samples, and the obtained samples are collected back into the sampling tube and loaded into the storage component. In this way, one sample collection is completed, and the storage component is filled with samples after multiple collections. The third step is to retrieve the sampling tube to the sea surface through an external rope after the collection is completed to ensure the safety of the sample; The fourth step is, when the sampling tube cannot be moved upward normally, release the lock of the fixing assembly on the sampling tube to separate the parts, and then use the external rope to pull the preservation assembly upward through the rope assembly to ensure that the sample floats to the sea surface quickly to avoid loss.

[0017] In summary, this application includes the following beneficial technical effects: 1. The present invention effectively improves the safety and efficiency of marine sediment sample collection through the detachable sampling tube design and the rope assembly linkage mechanism, ensures the safe recovery of samples in the event of emergencies in complex marine environments, and reduces operational risks.

[0018] 2. When the annular cylinder of the present invention encounters resistance during its upward movement and cannot rise normally, gas can be added to the fixed cylinder through an air pump, and gas can be filled into the hollow structure of the preservation cylinder at the same time, and the locking state of the annular cylinder and the annular cover plate can be released, so that the preservation cylinder can be quickly ejected from the fixed cylinder under high pressure environment, thereby realizing the separation of each preservation cylinder, and the gas filled in the hollow structure of the preservation cylinder can provide sufficient buoyancy to ensure that the preservation cylinder can float stably in complex ocean currents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a structural schematic diagram of the sampling tube of the present invention.

[0021] Figure 2 It is a schematic structural diagram of the sampling device of the present invention.

[0022] Figure 3 It is a schematic diagram of the structure of the storage component of the present invention.

[0023] Figure 4 The structure of the sampling assembly of the present invention is shown in FIG. Figure 1 .

[0024] Figure 5 It is a structural schematic diagram of the annular cylinder of the present invention.

[0025] Figure 6 It is a schematic diagram of the structure between the storage cylinder and the fixing cylinder of the present invention.

[0026] Figure 7 The structure of the sampling assembly of the present invention is shown in FIG. Figure 2 .

[0027] Figure 8 The present invention Figure 7 A partial enlarged view of point A in the middle.

[0028] Fig. 9 It is a schematic diagram of the structure among the sampling tube, the transverse guide rail and the lifting assembly of the present invention.

[0029] Fig.10 The present invention Fig. 9 A partial enlarged view of point B in the middle.

[0030] Fig.11 It is a structural schematic diagram of the locking assembly of the present invention.

[0031] Fig.12 It is a schematic diagram of the structure between the rope assembly and the fixing assembly of the present invention.

[0032] Fig.13 The present invention Figure 2 A partial enlarged view of point C in the middle.

[0033] In the figure, 10, lower cylinder; 101, left half cylinder; 102, right half cylinder; 11, telescopic rod; 12, water pump; 2, fixing assembly; 202, control board; 203, electric push rod 2; 204, I-type plate; 205, pull rope; 207, square frame; 208, block; 3, sampling assembly; 301, guide tube; 302, sampling tube; 303, horizontal plate; 304, horizontal guide rail; 305, longitudinal slide rail; 306, transfer plate; 307, T-type plate; 308, extension protrusion; 311, guide slide rod; 313, L-type plate; 314, side frame; 316, slider; 318, horizontal block; 319, arc connecting rod; 320, T-type frame; 321, electric push rod 1; 322 , sampling partition; 4, preservation component; 401, annular cylinder; 402, annular cover; 403, bottom support seat; 404, motor one; 407, arc plate; 410, fixed cylinder; 411, preservation cylinder; 412, sealing cover; 413, sliding cover; 414, clamping strip; 415, permanent magnet block; 416, annular plate; 419, air pump; 5, rope component; 501, transfer rope; 502, transfer ring; 6, lifting component; 61, lifting frame; 63, traction rope; 64, motor two; 7, locking component; 701, annular track; 702, buckle cylinder; 703, buckle column; 704, limiting protrusion; 705, driving shaft; 708, piston cylinder; 709, piston rod; 710, piston plate. DETAILED DESCRIPTION

[0034] The following combination Figure 1-Figure 13 Embodiments of the present invention are described in detail.

[0035] Embodiment 1: Reference Figure 1 and Figure 2 As shown, a marine sediment sampling device comprises: The sampling cylinder comprises a lower cylinder 10 and an upper cylinder, wherein the upper cylinder is composed of a left half cylinder 101 and a right half cylinder 102, and the lower cylinder 10, the left half cylinder 101 and the right half cylinder 102 are connected by a fixing assembly 2. When the sampling cylinder is disassembled, the fixing assembly 2 releases the fixing thereof, and the lower cylinder 10, the left half cylinder 101 and the right half cylinder 102 are disassembled and separated; The sampling assembly 3 is assembled between the lower cylinder 10 and the upper cylinder. The lower cylinder 10 has a sampling hole for the sampling assembly 3 to extend out for sampling. The preservation component 4 is arranged in the lower cylinder 10, and is used for preserving the sample obtained by the sampling component 3. A rope component 5 is connected between the sampling component 3 and the upper cylinder. One end of the rope component 5 is connected to the preservation component 4, and the other end is inserted between the left half cylinder 101 and the right half cylinder 102 and connected to an external rope. When the sampling cylinder is disassembled, the external rope pulls the preservation component 4 through the rope component 5 to smoothly obtain the sample.

[0036] The lower cylinder 10 is evenly equipped with a plurality of telescopic rods 11 around its circumference. The telescopic ends of the telescopic rods 11 pass through the bottom of the lower cylinder 10 to support and stabilize the sampling tube to ensure that the sampling assembly 3 can successfully obtain sediment samples from the marine sediment layer.

[0037] After the sampling device of the present invention is placed in the ocean, the sampling device is controlled to dive by controlling the external rope until it reaches a predetermined depth. The sampling tube is ensured to be stable on the surface of the seabed sediment layer through the support of the telescopic rod 11. The sampling component 3 extends from the sampling hole and deeply penetrates the sediment layer to accurately collect sediment samples. After the sampling is completed, the sampling component 3 is retracted and the obtained sample is placed in the preservation component 4 for sample preservation, and then the sampling device is moved to the remaining position to continue sampling until the preservation component 4 is full of samples, and then the sampling device is lifted to the sea surface by the external rope to extract and analyze the samples to ensure the accuracy and integrity of the data. When the sampling device is lifted, the telescopic rod 11 slowly shrinks, effectively reducing the seabed resistance and ensuring the smooth rise of the device. After reaching the sea surface, because the bottom circular plate of the lower cylinder 10 is a detachable installation method, the operator removes the circular plate at the bottom of the lower cylinder 10 to facilitate the removal of the preservation component 4 in the lower cylinder 10 together with the sample for subsequent laboratory analysis.

[0038] There are many unstable factors in the ocean, such as ocean currents and reefs, which limit the buoyancy of the sampling device. The present invention realizes the rapid disassembly of the sampling tube by designing a linkage mechanism between the rope assembly 5 and the external rope, and combining it with the fixing assembly 2. In an emergency, the sampling device can be quickly separated. At the same time, by pulling the rope assembly 5, the preservation assembly 4 and the sample therein can be quickly removed from the danger zone. In addition, the linkage between the external rope and the rope assembly 5 ensures the safe recovery of the preservation assembly 4, thereby avoiding the loss of the sample.

[0039] In summary, the present invention effectively improves the safety and efficiency of marine sediment sample collection through the detachable sampling tube design and the linkage mechanism of the rope assembly 5, ensures the safe recovery of samples when encountering emergencies in complex marine environments, reduces operational risks, improves the reliability of scientific research data and research efficiency, and provides strong guarantees for marine scientific research.

[0040] See also Figure 2 and Figure 3 As shown, the preservation component 4 includes an annular cylinder 401, which is constructed as a hollow shell structure with an opening at the upper end, and an annular cover plate 402 is rotatably covered on the upper end of the annular cylinder 401, and the annular cylinder 401 is installed on the bottom of the lower cylinder body 10 through a bottom supporting seat 403, and the annular cylinder 401 is placed on the bottom supporting seat 403 and rotates thereon, and a motor 404 is installed on the bottom of the lower cylinder body 10 through a motor bracket, and a driving gear is installed at the output end of the motor 404, and a driven gear ring meshing with the driving gear is sleeved on the outer wall of the annular cylinder 401.

[0041] After the motor 1 404 is started, the driving gear drives the driven gear ring to rotate, thereby rotating the annular cylinder 401, so that the sample obtained by the sampling device is evenly distributed in the annular cylinder 401, avoiding sample accumulation and ensuring the integrity and representativeness of the sample.

[0042] In addition, an arc plate 407 is provided on the inner wall of the left half cylinder 101, an arc block is provided on the bottom of the arc plate 407, and a raised portion is provided on the upper surface of the annular cover plate 402 which cooperates with the arc block. Therefore, under the limitation of the arc plate 407, the annular cylinder 401 is stably placed in the lower cylinder 10 to prevent shaking. At the same time, the arc block of the arc plate 407 cooperates with the raised portion to form a tight fixed structure, ensuring that the annular cover plate 402 remains stationary during the rotation of the annular cylinder 401.

[0043] See also Figure 4As shown, the sampling assembly 3 includes a guide tube 301, which is slidably inserted into a limiting ring at the sampling hole of the lower cylinder 10. The guide tube 301 is fixed by the limiting ring to ensure the stability of the guide tube 301 and avoid deviation during the sampling process. A sampling tube 302 is slidably arranged in the guide tube 301, and the sampling tube 302 is precisely positioned at the sampling position through the limiting effect of the guide tube 301 to ensure the accuracy and consistency of sample collection.

[0044] A transverse plate 303 is provided in the right half cylinder 102, and a transverse guide rail 304 is provided on the transverse plate 303. A lifting assembly 6 for controlling the lifting and lowering of the sampling tube 302 is installed on the transverse guide rail 304. The operation of the lifting assembly 6 enables the sampling tube 302 to flexibly descend for sampling and rise for recovery, thereby ensuring the high efficiency of the sampling process. After the sampling is completed, the sampling tube 302 rises to the highest point, and then moves smoothly along the transverse guide rail 304 to a preset position so that the sample can be loaded into the annular cylinder 401. The rotation of the annular cylinder 401 can enable the sampling cylinder to place the obtained samples into different areas of the annular cylinder 401 multiple times, thereby realizing the independent storage of each sample and avoiding cross contamination.

[0045] Furthermore, two symmetrically distributed longitudinal slide rails 305 are provided at the upper end of the guide tube 301 to ensure that the sampling tube moves smoothly along the longitudinal slide rails 305 during the lifting process.

[0046] See also Figure 5 As shown, a number of fixed cylinders 410 are installed at equal intervals in the annular cylinder 401, and a preservation cylinder 411 for preserving samples is provided in the fixed cylinder 410. A sealing cover 412 is covered on the upper end of the preservation cylinder 411. A feeding port is opened on the annular cover plate 402, and a sliding cover 413 is slidably provided at the feeding port. The sliding cover 413 is tightly fitted to the feeding port by magnetic attraction to ensure the structural integrity of the annular cover plate 402. The middle part of the sliding cover 413 is constructed as a protrusion with a hollow middle part, and the hollow middle part is slidably matched with the sealing cover 412.

[0047] See also Figure 7 and Figure 8 As shown, a transfer plate 306 is provided on the side wall of the upper end of the guide tube 301, and the upper surface of the transfer plate 306 is parallel to the upper surface of the guide tube 301, and the transfer plate 306 rests on the upper surface of the annular cover plate 402 through the protrusion at the bottom, and a T-plate 307 is slidably provided on the transfer plate 306, and an extension protrusion 308 is provided at the bottom of the horizontal end of the T-plate 307, and a closing protrusion and an opening protrusion located at the edge and the middle of the sliding cover 413 are provided in the middle, and the extension protrusion 308 is located between the closing protrusion and the opening protrusion.

[0048] When the sampling tube 302 moves, the vertical section of the T-plate 307 is pushed to control the movement of the T-plate 307. At the same time, since a permanent magnet is embedded in one end of the horizontal section of the T-plate 307 close to the middle of the sliding cover 413, and the magnetism of the permanent magnet is opposite to that of the sealing cover 412, when the sampling tube 302 pushes the T-plate 307, the permanent magnet first moves to the concave portion in the middle of the sliding cover 413, and is magnetically attracted to the sealing cover 412, and the sealing cover 412 is adsorbed into the concave portion in the middle of the sliding cover 413, and then the T-block continues to move, and the protrusion 308 is extended to move. Push the sliding block to open the sliding cover 413, exposing the feed port, and the sampling tube 302 can smoothly place the sample into the storage tube 411. Then the T-plate 307 is reset, and the extending block 308 cooperates with the closing block to close the sliding cover 413 again, and the permanent magnet disconnects the magnetic connection with the sealing cover 412, so that the sealing cover 412 falls back to the upper end of the storage tube 411 under the action of gravity, ensuring the sealed storage of the sample to prevent external contamination. At the same time, the sliding cover 413 moves and resets and is magnetically fixed to the feed port to ensure the airtightness of the annular cover plate 402.

[0049] It should be noted that the upper surface of the transfer plate 306 is parallel to the upper surface of the guide tube 301, and the width of the transfer plate 306 is slightly larger than the diameter of the guide tube 301, ensuring that the T-plate 307 is stable and without deviation when sliding, and at the same time ensuring that the sample in the sampling tube is not affected by the outside world when moving, and accurately falls into the designated storage tube 411, thereby achieving efficient and accurate sample packaging and storage, and ensuring the accuracy and reliability of experimental data.

[0050] The sliding cover 413 is made of non-magnetic material to ensure that the magnetic interaction between the permanent magnet and the sealing cover 412 is not affected.

[0051] See also Figure 6 As shown, a plurality of sliding holes are evenly opened in the circumferential direction on the inner side wall of the upper end of the storage tube 411 , and a clamping strip 414 is provided in the sliding hole through an elastic member. The side of the clamping strip 414 away from the elastic member is constructed as a slope structure with an inclined upper end, and cooperates with the sealing cover 412 .

[0052] See also Figure 3 As shown, a permanent magnet block 415 is embedded in the annular cover plate 402 adjacent to the feed inlet, and the sealing cover 412 has the same magnetic properties as the permanent magnet block 415 .

[0053] A limiting ring is provided at the upper end of the inner wall of the storage tube 411 to prevent the sealing cover 412 from moving downward excessively.

[0054] Initially, the fixed cylinder 410 is not installed in the annular cylinder 401 area below the permanent magnet block 415, and the fixed cylinders 410 are installed at even intervals in the remaining areas. Therefore, the sealing cover 412 at the upper end of the preservation cylinder 411 is initially located at the upper end of the clamping strip 414 to ensure that subsequent samples can be smoothly loaded into the preservation cylinder 411.

[0055] After the sample is loaded into the storage tube 411, the sealing cover 412 is pressed against the inclined surface of the card strip 414 under the action of gravity. Then, as the storage tube 411 continues to rotate clockwise, when it moves to the position corresponding to the permanent magnet block 415 of the annular cover plate 402, a repulsive magnetic field force is generated between the permanent magnet block 415 and the sealing cover 412, so that the sealing cover 412 has a driving force to move downward, pushing the sealing cover 412 to slide down along the inclined surface of the card strip 414. Then, the card strip 414 is reset under the push of the elastic member to restrict the sealing cover 412 in the storage tube 411, complete the sealing and fixing of the storage tube 411, and ensure that the sample in the storage tube 411 is well preserved. At the same time, the inclined surface design of the card strip 414 effectively prevents the sealing cover 412 from moving in the reverse direction, ensuring the sealing stability. The rotation mechanism of the storage tube 411 combines the physical principle of magnet repulsion, and ensures the efficiency and reliability of the sample during the storage process through magnetic repulsion, thereby significantly improving the safety of sample storage and the convenience of operation.

[0056] The elastic member may be designed as a spring, and the elastic force of the spring may be precisely adjusted according to the weight of the sealing cover 412 and the friction force of the sliding hole to ensure that the repulsive force between the permanent magnet block 415 and the sealing cover 412 can effectively push the sealing cover 412 to slide down.

[0057] In addition, the material selection of the spring should focus on corrosion resistance and stability to ensure that the elastic force does not decay during long-term use, ensuring that the sealing cover 412 can always slide down smoothly and reset accurately, further enhancing the overall sealing performance and durability of the storage tube 411.

[0058] See also Figure 4 , Figure 7 and Figure 8 As shown, further, a guide slide bar 311 is provided on the side of the longitudinal slide rail 305 facing the T-shaped plate 307, and the vertical section of the T-shaped plate 307 slides through the guide slide bar 311. A reset spring is connected between the longitudinal slide rail 305 and the T-shaped plate 307. Through the elastic force of the reset spring, it is ensured that the T-shaped plate 307 is automatically reset after the opening and closing action of the sliding cover 413 is completed, thereby maintaining the stability of the overall structure and the smoothness of operation.

[0059] An L-shaped plate 313 is provided on the inner wall of the lower end of the right half cylinder 102, and the horizontal end of the L-shaped plate 313 rests on the outer wall of the annular cylinder 401, and the lower surface of the sliding cover 413 slides on the upper surface of the horizontal section of the L-shaped plate 313, ensuring that the sliding cover 413 is tightly fitted with the outer wall of the annular cylinder 401 when closed, thereby enhancing the sealing effect. In addition, the horizontal section of the L-shaped plate 313 is also equipped with a side frame 314 connected to the guide slide bar 311 (away from the side of the longitudinal slide rail 305), which provides stable horizontal support for the guide slide bar 311 to prevent it from shifting, thereby ensuring the stability and accuracy of the opening and closing process of the sliding cover 413.

[0060] See also Fig. 9 and Fig.10 A longitudinal slide groove is provided on the inner wall of the longitudinal slide rail 305, and a slider 316 matching the longitudinal slide groove is provided on the top of the side wall of the sampling tube. The longitudinal slide groove extends to the bottom of the inner wall of the guide tube 301. The slider 316 slides up and down in the longitudinal slide groove, driving the sampling tube to accurately position and ensure efficient and error-free sampling process.

[0061] The two inner side walls of the transverse guide rail 304 are provided with guide rail grooves, in which the transverse block 318 is slidably installed. The middle part of the transverse block 318 is designed with a plug-in groove adapted to the slider 316, and the transverse guide rail 304 is provided with a through hole for the slider 316 to pass through just above the longitudinal slide groove.

[0062] When the sampling tube 302 is driven to move up and retract by the lifting assembly 6, the slider 316 on the side wall of the sampling tube 302 rises along the longitudinal slide groove, passes through the through hole, and then the transverse block 318 is inserted into the plug-in groove of the transverse block 318, thereby realizing the transverse locking of the sampling tube 302 and ensuring its stability and reliability during transportation and storage.

[0063] An arc-shaped connecting rod 319 is commonly connected between the two transverse blocks 318, a T-shaped frame 320 is installed on the arc-shaped connecting rod 319, and an electric push rod 321 is installed on one side of the T-shaped frame 320 on the transverse guide rail 304. The output end of the electric push rod 321 is connected to the T-shaped frame 320, and the synchronous movement of the T-shaped frame 320 and the transverse block 318 is controlled by the extension and retraction of the electric push rod 321 to ensure the smooth movement of the sampling tube 302 on the transverse guide rail 304 in the transverse locking state, thereby realizing the transfer of the sample in the sampling tube 302 to the annular cylinder 401, and ensuring that the sample is not disturbed by the outside world during the transfer process, maintaining the integrity and purity of the sample, and improving the accuracy and reliability of the experimental data.

[0064] A sampling baffle 322 is slidably provided in the sampling tube 302, and a plurality of one-way holes with one-way valves are provided on the sampling baffle 322 to ensure that seawater can only move from below the sampling baffle 322 to above the sampling baffle 322, thereby preventing seawater from flowing back and ensuring the directionality and accuracy of sample collection.

[0065] A plurality of flow holes offset from the one-way holes are provided at the top of the sampling tube 302, and a sealing gasket is provided at the top of the sampling tube 302. When the sampling baffle 322 moves up to the highest point in the sampling tube 302, the sampling baffle 322 is in close contact with the top of the sampling tube 302 through the sealing gasket, forming a double seal to prevent seawater from entering the sampling cylinder through the top of the sampling tube 302.

[0066] However, when the sampling baffle 322 is not in close contact with the top of the sampling tube 302, seawater can enter the sampling cylinder through the one-way hole and the flow hole. Therefore, a water pump 12 (at Figure 2 As shown in the figure, the seawater in the lower cylinder 10 is pumped out of the sampling cylinder by the water pump 12. At the same time, the bottom of the bottom support seat 403 has a flow groove to ensure smooth flow in the area between the annular cylinder 401 and the limiting ring to prevent water accumulation in the sampling cylinder.

[0067] Continue reading Fig. 9 and Fig.10 As shown, the lifting assembly 6 includes a lifting frame 61 installed between the tops of two horizontal blocks 318, and a winding disk (not shown in the figure) is rotatably provided in the lifting frame 61, and a traction rope 63 is wound on the winding disk. The end of the traction rope 63 away from the winding disk is fixed on the sampling partition 322, and a motor 2 64 is installed on the outer wall of the lifting frame 61. The output end of the motor 2 64 is passed through the lifting frame 61 and connected to the winding shaft. The winding disk is driven to rotate by the motor 2 64, and the traction rope 63 drives the sampling partition 322 to move up or down to complete the collection of samples by the sampling tube.

[0068] The specific implementation process is that, initially, the sampling baffle 322 is tightly attached to the top of the sampling tube 302, and the lower end of the sampling tube 302 is located in the guide tube 301 to ensure the overall sealing of the sampling tube. It should be noted that the sampling tube 302 and the guide tube 301 are tightly fitted through a sealing ring to ensure that no seawater infiltration occurs.

[0069] Start the motor 2 64, the reel drives the traction rope 63 to be released slowly, the sampling baffle 322 drops accordingly, and the sampling tube 302 also drops at the same time. The sampling tube 302 adopts a counterweight design to ensure that it stably sinks into the sediment layer in the water. At this time, the sampling baffle 322 continues to move downward. At the same time, the sampling tube 302 remains fixed, and the seawater therein is smoothly discharged through the one-way hole and the flow hole and re-enters the sampling cylinder. When the sampling baffle 322 touches the sediment layer, the motor 2 64 drives in the reverse direction, the reel retracts the traction rope 63, and the sampling baffle 322 moves up. The negative pressure generated between the bottom of the sampling baffle 322 and the sediment layer causes the sediment to be adsorbed to the surface of the sampling baffle 322, and then moves up to the sampling tube 302 to complete the sample collection.

[0070] Once the sampling baffle 322 returns to the top of the sampling tube 302, the sampling tube 302 rises as a whole until it is located above the guide tube 301. The sampling tube 302 is then driven by the electric push rod 321 to detach from the guide tube 301 and move toward the sliding cover 413 so that the sample in the sampling tube 302 can be safely transferred to the storage tube 411 in the annular tube 401. Subsequently, the electric push rod 321 starts the reset program to smoothly send the sampling tube 302 back to the guide tube 301, thereby fully preparing for the next round of sampling.

[0071] During this process, seawater will enter the sampling tube through the guide tube 301, but when the sampling tube 302 returns to the guide tube 301, the seawater is discharged in time through the water pump 12 to ensure that the sampling tube is dry and avoid sample contamination. At the same time, the sealing ring plays a role again, blocking the infiltration of seawater, maintaining the sealing state of the sampling tube, and providing protection for the next sampling. In addition, a protective coating is provided on the outside of the sampling tube to enhance its corrosion resistance in complex marine environments and extend the service life of the equipment.

[0072] Embodiment 2: See also Figure 5 and Figure 6 As shown, on the basis of Example 1, two layers of annular plates 416 are provided in the annular cylinder 401 of the present invention, and two layers of annular plates 416 are passed through the fixed cylinder 410, a compressed gas storage area is provided between the two annular plates 416, a gas injection area is provided between the lower annular plate 416 and the bottom of the annular cylinder 401, the annular cover plate 402 and the upper annular plate 416 are connected by a locking assembly 7, an air pump 419 is installed on the lower annular plate 416, and a connecting pipe is provided on the outer wall of the fixed cylinder 410.

[0073] The air pump 419 introduces the gas in the compressed gas storage area into the gas injection area, and then enters the fixed cylinder 410 through the connecting pipe. At the same time, when the air pressure in the compressed gas storage area drops to a certain value, the locking component 7 releases the connection between the annular cylinder 401 and the annular cover plate 402, and then pushes the storage cylinder 411 out of the annular cylinder 401 under the high-pressure gas injection in the fixed cylinder 410, so that the several storage cylinders 411 in the annular cylinder 401 are sprayed into the ocean respectively, and then use the buoyancy in the storage cylinder 411 to achieve its free floating, and finally float to the sea level and be obtained by the staff. In this way, not only the rapid release and recovery of the sample is ensured, but also the efficiency and accuracy of marine ecological research are greatly improved. Each storage cylinder 411 adopts an independent buoyancy design, which can maintain a stable floating state even in a complex and changeable ocean current environment, thereby ensuring the integrity and high reliability of the sample data.

[0074] Furthermore, the side wall of the storage cylinder 411 is constructed as a hollow structure, and a valve is provided at the bottom of the hollow structure, and a thimble that cooperates with the valve is provided at the bottom of the fixed cylinder 410, so when gas is injected into the fixed cylinder 410, the gas enters the hollow structure of the storage cylinder 411 through the valve, so that the storage cylinder 411 has sufficient buoyancy to ensure that it floats stably in the ocean. As a common inflation structure, the valve and the thimble are widely used in inflation equipment such as automobile tires, and are easy to operate and highly reliable.

[0075] The inner wall of the fixing cylinder 410 is configured with an annular cavity to ensure that there is enough space between the fixing cylinder 410 and the storage cylinder 411 for the gas to flow in the fixing cylinder 410 and be injected into the hollow structure of the storage cylinder 411 .

[0076] An infusion tube is provided on the upper annular plate 416, and a one-way valve is provided on the infusion tube. Gas can be infused into the compressed gas storage area through the infusion tube. The one-way valve ensures one-way flow of gas, prevents backflow, and ensures stable air pressure, thereby accurately controlling the gas infusion volume and the buoyancy of the storage tube 411, ensuring its stable buoyancy in complex ocean currents and improving sample recovery efficiency.

[0077] See also Figure 5 and Fig.11 As shown, the locking assembly 7 includes an annular track 701 with an L-shaped cross-section, and a plurality of buckle assemblies are installed on the upper annular plate 416. The buckle assembly includes a buckle cylinder 702 penetrated on the annular plate 416, a buckle column 703 is rotatably arranged inside the buckle cylinder 702, and a limiting protrusion 704 is arranged after the buckle column 703 penetrates the top of the buckle cylinder 702, the buckle column 703 is constructed as a circular cavity with an opening at the bottom, a driving shaft 705 is axially slidably arranged in the circular cavity, a spiral groove is provided on the outer wall of the driving shaft 705, a convex rod (not shown in the figure) which is slidably matched with the spiral groove is provided on the inner wall of the circular cavity, and a receiving cavity is provided on the top of the driving shaft 705, and a starting spring which cooperates with the top of the circular cavity is arranged in the receiving cavity.

[0078] A piston cylinder 708 is provided at the bottom of the buckle cylinder 702 , a piston rod 709 is slidably provided in the piston cylinder 708 , and the upper end of the piston rod 709 is connected to the driving shaft 705 , and the piston rod 709 is provided with a piston plate 710 that slides in the piston cylinder 708 .

[0079] When the gas flows toward the compressed gas storage area, the pressure therein gradually increases, pushing the piston rod 709 upward, driving the driving shaft 705 to rotate, and the protruding rod slides along the spiral groove to drive the snap column 703 to rotate. The limiting protrusion 704 rotates toward the inside of the annular track 701 and compresses the starting spring at the same time, so that the annular cylinder 401 and the annular cover plate 402 are tightly connected and locked, ensuring that the device remains stable under high-pressure environment and preventing the storage cylinder 411 from being released prematurely.

[0080] When the gas in the compressed gas storage area is transported to the gas injection area and flows into the hollow structure of the fixed cylinder 410 and the storage cylinder 411, the pressure gradually decreases with the continuous transportation of the gas. When the air pressure in the hollow structure of the fixed cylinder 410 and the storage cylinder 411 reaches the preset value, the pressure in the compressed gas storage area drops, and the elastic force of the starting spring is greater than the pressure in the compressed gas storage area, so that the starting spring drives the push shaft 705 to move downward, the protruding rod slides in the opposite direction, the snap column 703 rotates in the opposite direction to reset, the limiting protrusion 704 disengages from the annular track 701, the annular cylinder 401 is unlocked from the annular cover plate 402, and then the high-pressure gas in the fixed cylinder 410 is rapidly released, pushing the storage cylinder 411 to rapidly float to the sea surface.

[0081] In summary, when the sampling cylinder is disassembled to release the annular cylinder 401 from the sampling cylinder to ensure that the sample can be taken out smoothly, but when the annular cylinder 401 encounters resistance during the upward movement and cannot rise normally, the air pump 419 can be used to replenish gas into the fixed cylinder 410 to increase the internal pressure. At the same time, gas is filled into the hollow structure of the preservation cylinder 411, and the locking state of the annular cylinder 401 and the annular cover 402 is released, so that the preservation cylinder 411 can be quickly ejected from the fixed cylinder 410 under high pressure, and the separation of each preservation cylinder 411 is achieved. The gas filled in the hollow structure of the preservation cylinder 411 can provide sufficient buoyancy to ensure that the preservation cylinder 411 can float stably in complex ocean currents, avoid affecting the sample recovery efficiency due to excessive resistance, and thus ensure the accuracy and completeness of the experimental data.

[0082] Embodiment three: See also Fig.12 As shown, on the basis of Example 1 and Example 2, the rope assembly 5 of the present invention includes a transition rope 501, one end of the transition rope 501 is fixed to the upper end of the annular cover plate 402, and the other end is connected to the lower end of the transition ring 502, the transition ring 502 is inserted between the left half cylinder 101 and the right half cylinder 102, the upper end of the transition ring 502 is connected to the external rope, and the external rope forms a stable connection with the annular cover plate 402 through the transition ring 502.

[0083] When the sampling cylinder is disassembled, the left half cylinder 101 and the right half cylinder 102 are separated, and the adapter ring 502 is detached from the left half cylinder 101 and the right half cylinder 102, and the external rope drives the adapter rope 501 to move through the adapter ring 502, and the adapter rope 501 drives the annular cover plate 402 to move, and because the annular cover plate 402 and the annular cylinder 401 are connected by the locking assembly 7, the movement of the annular cover plate 402 drives the annular cylinder 401 to rise together, ensuring that the sample in the annular cylinder 401 can be smoothly taken out.

[0084] See also Fig.12 and Fig.13As shown, the fixing assembly 2 includes a side plate fixed on the arc plate 407, a control plate 202 is provided on one side of the side plate sliding toward the center of the arc plate 407, an electric push rod 203 is provided on the arc plate 407, the output end of the electric push rod 203 is connected to the side plate, and three groups of clamping parts are provided on the side of the side plate away from the control plate 202. The middle clamping part is used to fix between the left half cylinder 101 and the right half cylinder 102, and the clamping parts on both sides are respectively fixed between the left half cylinder 101 and the lower cylinder 10 and between the right half cylinder 102 and the lower cylinder 10 to ensure the stability of the overall structure.

[0085] The clamping parts include an I-shaped plate 204, an arc plate 407 is provided with a long strip slot for the I-shaped plate 204 to slide, a pull rope 205 is connected between the I-shaped plate 204 and the control panel 202, the side panel has a round hole for the pull rope 205 to pass through, and a push spring is connected between the I-shaped plate 204 and the side panel, a square frame 207 is provided on the side of the I-shaped plate 204 away from the side panel, and two symmetrically distributed clamping blocks 208 are embedded in the square frame 207, the two clamping blocks 208 of the middle clamping part are respectively fixed at the corresponding positions of the left half cylinder 101 and the right half cylinder 102, and the two clamping blocks 208 of the clamping parts on both sides are respectively fixed at the corresponding positions of the left half cylinder 101 and the lower cylinder 10, and the right half cylinder 102 and the lower cylinder 10, to ensure that the parts are tightly connected and the overall structure remains stable during operation to prevent any parts from accidentally falling off or shifting.

[0086] If the sampling tube fails to float normally in the ocean, the electric push rod 203 can be operated to retract it, and then the pull rope 205 pulls the I-type plate 204 to slide, so that the square frame 207 can be successfully separated from the block 208, and the locking part is loosened, so that the left half cylinder 101, the right half cylinder 102 and the lower cylinder 10 can be separated, ensuring that the various parts of the sampling tube can be disassembled smoothly, so as to quickly recover the sample.

[0087] The design of the fixing component 2 not only improves the overall stability of the sampling tube, but also enables rapid disassembly and recycling, greatly improving the efficiency and safety of marine sample collection. At the same time, the design effectively avoids operational delays caused by component jams, ensures rapid response even in complex sea conditions, and further enhances the practicality and reliability of the sampling tube.

[0088] In addition, the present application also provides a method for sampling marine sediments, the sampling method comprising the following steps: The first step is to control the sampling tube to dive to the predetermined seabed sediment layer position through an external rope; In the second step, the sampling component 3 extends out of the sampling hole to collect the sediment layer sample, collects the obtained sample into the sampling tube, and puts it into the storage component 4, thus completing one sample collection, and after multiple collections, the storage component 4 is filled with samples; The third step is to retrieve the sampling tube to the sea surface through an external rope after the collection is completed to ensure the safety of the sample; Step 4: When the sampling tube cannot be moved upward normally, release the lock of the fixing component 2 on the sampling tube to separate the parts, and then use the external rope to pull the preservation component 4 upward through the rope component 5 to ensure that the sample floats to the sea surface quickly to avoid loss.

[0089] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered as exemplary and non-restrictive in all respects.

[0090] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A marine sediment sampling device, characterized in that: include: The sampling cylinder comprises a lower cylinder and an upper cylinder, the upper cylinder is composed of a left half cylinder and a right half cylinder, the lower cylinder, the left half cylinder and the right half cylinder are connected by a fixing assembly, when the sampling cylinder is disassembled, the fixing assembly releases the fixing of the lower cylinder, the left half cylinder and the right half cylinder are disassembled and separated; The sampling assembly is assembled between the lower cylinder and the upper cylinder, and the lower cylinder has a sampling hole for the sampling assembly to extend out for sampling; A preservation component is arranged in the lower cylinder and is used to preserve the samples obtained by the sampling component. A rope component is connected between the sampling component and the upper cylinder. One end of the rope component is connected to the preservation component, and the other end is inserted between the left half cylinder and the right half cylinder and connected to an external rope. When the sampling cylinder is disassembled, the external rope pulls the preservation component through the rope assembly.

2. The marine sediment sampling device according to claim 1, characterized in that: The storage component comprises an annular cylinder, which is constructed as a hollow structure with an upper end opened, and an annular cover plate is rotatably covered on the upper end of the annular cylinder.

3. A marine sediment sampling device according to claim 2, characterized in that: A plurality of fixed cylinders are installed in the annular cylinder at equal intervals. A storage cylinder for storing samples is arranged in the fixed cylinder. A sealing cover is covered on the upper end of the storage cylinder. A feeding port is opened on the annular cover plate. A sliding cover is slidably arranged at the feeding port.

4. The marine sediment sampling device according to claim 3, characterized in that: Two layers of annular plates are arranged in the annular cylinder, and two layers of annular plates are passed through the fixed cylinder. A compressed gas storage area is set between the two annular plates, and a gas injection area is set between the lower annular plate and the bottom of the annular cylinder. The annular cover plate and the upper annular plate are connected by a locking assembly, an air pump is installed on the lower annular plate, and a connecting pipe is provided on the outer wall of the fixed cylinder.

5. The marine sediment sampling device according to claim 4, characterized in that: The side wall of the storage cylinder is constructed as a hollow structure, and a valve is arranged at the bottom of the hollow structure, and a ejector pin matched with the valve is arranged at the bottom of the fixed cylinder.

6. The marine sediment sampling device according to claim 3, characterized in that: The sampling assembly includes a guide tube, which is slidably inserted in a limit ring at the sampling hole of the lower cylinder. A sampling tube is slidably arranged in the guide tube. A horizontal plate is arranged in the right half of the cylinder, and a horizontal guide rail is arranged on the horizontal plate. A lifting assembly for controlling the lifting of the sampling tube is installed on the horizontal guide rail.

7. The marine sediment sampling device according to claim 6, characterized in that: A transfer plate is provided on the side wall of the upper end of the guide tube, a T-plate is slidably provided on the transfer plate, an extension protrusion is provided at the bottom of the horizontal end of the T-plate, a closing protrusion and a sliding protrusion located at the edge and the middle are provided on the middle of the sliding cover, and the extension protrusion is located between the closing protrusion and the sliding protrusion.

8. The marine sediment sampling device according to claim 7, characterized in that: A permanent magnet is embedded in the annular cover plate adjacent to the feed inlet, and the sealing cover has the same magnetic properties as the permanent magnet; A permanent magnet is embedded in one end of the horizontal section of the T-shaped plate close to the middle of the sliding cover, and the magnetism of the permanent magnet is opposite to that of the sealing cover.

9. The marine sediment sampling device according to claim 3, characterized in that: A plurality of sliding holes are evenly arranged on the inner side wall of the upper end of the storage tube in the circumferential direction. A clamping strip is arranged in the sliding hole through an elastic member. The side of the clamping strip away from the elastic member is constructed as a slope structure with an inclined upper end.

10. A method for sampling marine sediments, using a marine sediment sampling device according to any one of claims 1 to 9, characterized in that: The sampling method includes the following steps: The first step is to control the sampling tube to dive to the predetermined seabed sediment layer position through an external rope; In the second step, the sampling component extends out of the sampling hole to collect sediment layer samples, and the obtained samples are collected back into the sampling tube and loaded into the storage component. In this way, one sample collection is completed, and the storage component is filled with samples after multiple collections. The third step is to retrieve the sampling tube to the sea surface through an external rope after the collection is completed to ensure the safety of the sample; The fourth step is, when the sampling tube cannot be moved upward normally, release the lock of the fixing assembly on the sampling tube to separate the parts, and then use the external rope to pull the preservation assembly upward through the rope assembly to ensure that the sample floats to the sea surface.

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