A kind of marine carbon sink detection mud sampling equipment

Abstract

The present application relates to the technical field of mud sampling equipment, and discloses a mud sampling equipment for marine carbon sink detection, which comprises a sink cylinder, a plurality of water falling holes are formed through the bottom wall of the sink cylinder, three hanging holes are equidistantly formed on the circumferential outer surface of the sink cylinder close to the top end, and a plurality of through holes are equidistantly formed through the lower surface of the sink cylinder in the circumferential direction. The present application drives the driving rod to move downward by the downward movement of the pressure plate, drives the fixed block to move downward, drives the driving gear to rotate through the guide groove and the pressure rod, drives the driven gear to rotate, drives the sampling cylinder to rotate through the hollow shaft, and drives the sampling cylinder to shovel the mud on the seabed into the sampling cylinder through the sampling gap, and seals the sampling cylinder with the installation cylinder to keep the sample mud in the sampling cylinder. The present application can realize the mud sampling for marine carbon sink detection without complex mechanical devices, and greatly reduces the sampling cost of marine carbon sink detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mud sampling equipment, and particularly relates to a mud sampling equipment for marine carbon sink detection. BACKGROUND

[0002] Marine carbon sink (also known as "blue carbon") refers to the process and mechanism of absorbing carbon dioxide in the atmosphere and solidifying it by taking the ocean as a specific carrier. The ocean plays a huge role in regulating global climate change, especially in absorbing greenhouse gases such as carbon dioxide. The mud sampling equipment for marine carbon sink detection is usually used to evaluate and monitor the carbon storage capacity in marine sediments.

[0003] The existing mud sampling equipment for marine carbon sink detection is usually used to effectively extract sediment samples from the seabed by using a grab bucket type mud sampler or a piston type sampler. Since the water is deep when sampling in the deep sea, a long grab arm and pipeline are required when sampling by using the grab bucket type mud sampler or the piston type sampler, which leads to high requirements for the equipment and greatly increases the cost of marine carbon sink detection and mud sampling. SUMMARY

[0004] The present application aims at solving the problems in the prior art and provides a mud sampling equipment for marine carbon sink detection.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0006] The mud sampling equipment for marine carbon sink detection comprises a sinking cylinder, a plurality of water holes are formed through the bottom wall of the sinking cylinder, three hanging holes are equidistantly formed on the circumferential outer surface of the sinking cylinder close to the top end, a plurality of through holes are equidistantly formed through the lower surface of the sinking cylinder in the circumferential direction, mounting cylinders are fixedly installed on the inner walls of the through holes, sampling cylinders are rotatably installed between the inner walls of the opposite ends of the mounting cylinders, sampling notches are formed on the circumferential outer surfaces of the sampling cylinders, the same sampling notches are formed on the circumferential outer surfaces of the mounting cylinders close to the bottom, hollow shafts are fixedly installed on the outer surfaces of the two ends of the sampling cylinders close to the rotation centers, driven gears are fixedly installed on one end of the hollow shafts and penetrate the outer surfaces of the mounting cylinders, two driving gears are symmetrically rotatably installed on the outer surfaces of the opposite ends of the mounting cylinders, the driving gears are engaged with the driven gears, connecting rods are fixedly installed on the outer surfaces of the two driving gears close to the mounting cylinders, and a pressing rod is fixedly installed between the outer surfaces of the two connecting rods close to the top end.

[0007] As a further scheme of the present application, the bottom wall of the middle position of the sinking cylinder is fixedly installed with a fixed cylinder, the bottom end of the fixed cylinder penetrates the lower surface of the sinking cylinder, the inner wall close to the middle of the fixed cylinder is fixedly installed with a partition plate, the inner wall close to the top end of the fixed cylinder is slidingly installed with a pressure plate, the fixed cylinder is divided into a sealed cavity by the partition plate and the pressure plate, the lower surface of the partition plate is fixedly installed with a one-way air outlet valve, the lower surface of the pressure plate is fixedly installed with a first spring, and the bottom end of the first spring is fixedly installed with the upper surface of the partition plate.

[0008] As a further scheme of the present application, the circumferential outer surface close to the top end of the fixed cylinder is equidistantly fixedly installed with a plurality of first limiting sleeves, the inner wall of each of the plurality of first limiting sleeves is slidingly installed with a driving rod, the top end of the driving rod is fixedly installed with the upper surface of the pressure plate, the bottom end of the driving rod is fixedly installed with a fixed block, the outer surface of the fixed block is provided with a guide groove, and the pressure rod is slidingly installed with the inner wall of the guide groove.

[0009] As a further scheme of the present application, the circumferential direction of the bottom wall of the sinking cylinder is equidistantly fixedly installed with a plurality of groups of second limiting sleeves, one group of two second limiting sleeves is slidingly installed with a sliding rod, one end of the sliding rod close to the hollow shaft is fixedly installed with a plug, the plug is matched with the inner hole of the hollow shaft, the outer surface of the other end of the sliding rod is provided with a driving groove, the driving groove is obliquely arranged, the lower surface of the fixed block is symmetrically fixedly installed with two connecting rods, the outer surface close to the bottom of the two connecting rods is fixedly installed with a driving column, and the driving column is slidingly installed with the inner wall of the driving groove.

[0010] As a further scheme of the present application, the inner wall close to the bottom end of the fixed cylinder is equidistantly fixedly installed with a plurality of limiting installation blocks, the inner wall of each of the plurality of limiting installation blocks is slidingly inserted with a limiting column, the bottom end of the limiting column penetrates the lower surface of the limiting installation block and is fixedly installed with a bottom plate, the outer surface of the limiting column is sleeved with a second spring, the second spring is arranged between the bottom plate and the limiting installation block, and a gap is arranged between the bottom plate and the inner wall of the fixed cylinder.

[0011] As a further scheme of the present application, the circumferential outer surface close to the bottom of the fixed cylinder is equidistantly provided with a plurality of openings, the top wall of each of the plurality of openings is rotationally installed with a rotating rod, the rotating rod is arranged below the fixed block, the inner wall between one end of the rotating rod close to the fixed block is rotationally installed with a top wheel, the top wheel abuts against the lower surface of the fixed block, the lower surface of the other end of the rotating rod is fixedly installed with an inclined rod, the inclined rod is obliquely arranged, the top end of the limiting column penetrates the upper surface of the limiting installation block and is fixedly installed with a baffle, the circumferential outer surface of the baffle is fixedly installed with two clamping rods, a gap is arranged between the two clamping rods, and the inclined rod is arranged between the two clamping rods and is slidingly installed with the same.

[0012] As a further scheme of the present application, a gas valve is fixedly installed on the circumferential outer surface of the fixing cylinder, the gas valve is in communication with the interior of the fixing cylinder, and the gas valve is arranged between the pressure receiving plate and the partition plate.

[0013] Compared with the prior art, the present application has the following beneficial effects:

[0014] 1. By moving the pressure receiving plate downward to drive the driving rod downward, the driving rod drives the fixing block downward, the fixing block drives the driving gear to rotate through the guide groove and the pressing rod, the driving gear drives the driven gear to rotate, the driven gear drives the sampling cylinder to rotate through the hollow shaft, the sampling cylinder scoops the seabed soil into its interior through the sampling gap, and the sampling cylinder seals the sample soil in the interior of the sampling cylinder with the installation cylinder, so that the sampling cost of marine carbon sink detection is greatly reduced without complex mechanical devices.

[0015] 2. By moving the fixing block downward to drive the connecting rod downward, the connecting rod drives the two sliding rods to move close to each other through the driving column and the driving groove, and the two sliding rods drive the plug to seal the port of the hollow shaft to prevent the sample soil from flowing out of the port. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The present application provides a whole structure schematic view of a seabed soil sampling device for marine carbon sink detection.

[0017] Figure 2 The present application provides a bottom view structure schematic view of a seabed soil sampling device for marine carbon sink detection.

[0018] Figure 3 The present application provides an internal structure schematic view of a seabed soil sampling device for marine carbon sink detection.

[0019] Figure 4 The present application provides a sectional view structure schematic view of a seabed soil sampling device for marine carbon sink detection.

[0020] Figure 5 The present application provides a sampling cylinder schematic view of a seabed soil sampling device for marine carbon sink detection.

[0021] Figure 6 The present application provides a pressing rod schematic view of a seabed soil sampling device for marine carbon sink detection.

[0022] Figure 7 The present application provides a rotating rod schematic view of a seabed soil sampling device for marine carbon sink detection.

[0023] Figure 8 The present application provides a top wheel schematic view of a seabed soil sampling device for marine carbon sink detection.

[0024] Figure 9A schematic view of a slope rod of a mud sampling device for detecting marine carbon sinks is provided.

[0025] In the figure: 1, sinking cylinder; 2, mounting cylinder; 3, sampling cylinder; 4, bottom plate; 5, fixed cylinder; 501, partition plate; 502, first spring; 503, one-way air outlet valve; 6, pressure receiving plate; 7, first limiting sleeve; 8, driving rod; 9, fixed block; 10, pressure rod; 11, connecting rod; 12, driving gear; 13, driven gear; 14, hollow shaft; 15, second limiting sleeve; 16, sliding rod; 17, driving groove; 18, driving column; 19, connecting rod; 20, plug; 21, guide groove; 22, limiting mounting block; 23, limiting column; 24, second spring; 25, baffle; 26, clamping rod; 27, rotating rod; 28, slope rod; 29, top wheel; 30, opening; 31, gas valve; 32, water inlet hole; 33, hanging hole. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application will be further described below in combination with specific embodiments.

[0027] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] REFERENCE Figures 1-9The utility model relates to a kind of marine carbon sink detection with mud sampling equipment, including sink cylinder 1, the bottom wall of sink cylinder 1 is opened with multiple water holes 32, sink cylinder 1 is equidistantly opened with three hanging holes 33 on the circumferential outer surface close to top end, the circumferential direction equidistantly of sink cylinder 1 lower surface is opened with multiple through holes, the inner wall of multiple through holes is all fixedly installed with installation cylinder 2, rotationally installed with sampling cylinder 3 between the inner wall of opposite ends of installation cylinder 2, the circumferential outer surface of sampling cylinder 3 is opened with sampling notch, the circumferential outer surface close to bottom of installation cylinder 2 is opened with identical sampling notch, the outer surface of both ends of sampling cylinder 3 close to rotation center is all fixedly installed with hollow shaft 14, one end of hollow shaft 14 is fixedly installed with driven gear 13 through the outer surface of installation cylinder 2, two drive gears 12 are symmetrically rotationally installed with the outer surface of opposite ends of installation cylinder 2, drive gear 12 is engaged with driven gear 13, two drive gears 12 are all fixedly installed with connecting rod 11 close to the outer surface of installation cylinder 2, two connecting rods 11 are fixedly installed with pressure rod 10 between the outer surface close to top end, the bottom wall of sink cylinder 1 intermediate position is fixedly installed with fixed cylinder 5, the bottom end of fixed cylinder 5 is through the lower surface of sink cylinder 1, fixed cylinder 5 is fixedly installed with baffle 501 close to the inner wall of middle, fixed cylinder 5 is slidably installed with pressure plate 6 close to the inner wall of top end, fixed cylinder 5 is divided into sealed cavity by baffle 501 and pressure plate 6, the lower surface of baffle 501 is fixedly installed with one-way air outlet valve 503, the lower surface of pressure plate 6 is fixedly installed with first spring 502, the bottom end of first spring 502 is fixedly installed with the upper surface of baffle 501, the circumferential outer surface close to top end of fixed cylinder 5 is equidistantly fixedly installed with multiple first limiting sleeves 7, the inner wall of multiple first limiting sleeves 7 is all slidably installed with drive rod 8, the top end of drive rod 8 is fixedly installed with the upper surface of pressure plate 6, the bottom end of drive rod 8 is fixedly installed with fixed block 9, the outer surface of fixed block 9 is opened with guide slot 21, pressure rod 10 is slidably installed with the inner wall of guide slot 21.

[0030] The pressure that the sea water acts on the upper surface of pressure plate 6 makes pressure plate 6 move downwards, when pressure plate 6 moves downwards, the air in the inside of fixed cylinder 5 will be discharged from one-way air outlet valve 503, drive rod 8 is driven to move downwards by pressure plate 6 moving downwards, drive rod 8 drives fixed block 9 to move downwards, fixed block 9 drives drive gear 12 to rotate by guide slot 21 and pressure rod 10, driven gear 13 is driven to rotate by drive gear 12, driven gear 13 drives sampling cylinder 3 to rotate by hollow shaft 14, sampling cylinder 3 is driven to rotate by sampling notch, and sampling cylinder 3 is driven to rotate by sampling notch.

[0031] In the embodiment, the bottom wall of the sinking cylinder 1 is fixedly installed with a plurality of second limiting sleeves 15 at equal intervals in the circumferential direction, the inner walls of a group of two second limiting sleeves 15 are slidably installed with slide rods 16, one end of the slide rod 16 close to the hollow shaft 14 is fixedly installed with a plug 20 which is matched with the inner hole of the hollow shaft 14, the outer surface of the other end of the slide rod 16 is provided with a driving groove 17 which is inclinedly arranged, the lower surface of the fixed block 9 is fixedly installed with two connecting rods 19 which are symmetrical, the outer surface of the bottom of the two connecting rods 19 is fixedly installed with a driving column 18 which is slidably installed with the inner wall of the driving groove 17.

[0032] The lower movement of the fixed block 9 drives the connecting rod 19 to move downward, the connecting rod 19 drives the two slide rods 16 to move close to each other through the driving column 18 and the driving groove 17, and the two slide rods 16 drive the plug 20 to seal the port of the hollow shaft 14, so as to avoid the sample soil from flowing out of the port.

[0033] In the embodiment, the inner wall of the bottom end of the fixed cylinder 5 is fixedly installed with a plurality of limiting installation blocks 22 at equal intervals, the inner walls of the plurality of limiting installation blocks 22 are slidably inserted with limiting columns 23, the bottom end of the limiting column 23 penetrates through the lower surface of the limiting installation block 22 and is fixedly installed with a bottom plate 4, the outer surface of the limiting column 23 is sleeved with a second spring 24 which is arranged between the bottom plate 4 and the limiting installation block 22, there is a gap between the bottom plate 4 and the inner wall of the fixed cylinder 5, the gap is convenient for gas discharge, a plurality of openings 30 are provided at equal intervals on the circumferential outer surface of the bottom of the fixed cylinder 5, the top wall of the plurality of openings 30 is rotatably installed with a rotating rod 27 which is arranged below the fixed block 9, the inner wall between one end of the rotating rod 27 close to the fixed block 9 is rotatably installed with a top wheel 29 which abuts against the lower surface of the fixed block 9, the lower surface of the other end of the rotating rod 27 is fixedly installed with an inclined rod 28 which is arranged in an inclined manner, the top end of the limiting column 23 penetrates through the upper surface of the limiting installation block 22 and is fixedly installed with a baffle 25, the circumferential outer surface of the baffle 25 is fixedly installed with two clamping rods 26 which are provided with a gap, and the inclined rod 28 is arranged between the two clamping rods 26 and is slidably installed with them.

[0034] When the sinking cylinder 1 is about to contact the seabed, the bottom plate 4 first contacts the seabed, and then the sinking cylinder 1 continues to sink under the action of gravity, at this time, the limiting column 23 moves upward relative to the sinking cylinder 1, the baffle 25 is driven to move upward by the limiting column 23, the baffle 25 drives the rotating rod 27 to rotate by the clamping rod 26 and the inclined rod 28, and the top wheel 29 moves away from the lower surface of the fixed block 9 when the bottom surface of the sinking cylinder 1 contacts the seabed.

[0035] In the embodiment, the circumferential outer surface of the fixed cylinder 5 is fixedly installed with a gas valve 31 which is communicated with the inside of the fixed cylinder 5, and the gas valve 31 is arranged between the pressure receiving plate 6 and the partition plate 501.

[0036] When the sink cylinder 1 is out of water, the collection box is placed below the sampling cylinder 3, the operator manually opens the gas valve 31, so that air can enter the inside of the sealed cavity, at this time, the pressure plate 6 is reset under the action of the first spring 502, and the bottom plate 4 is reset under the action of the second spring 24.

[0037] In this embodiment, through the hollow shaft 14, the air remaining in the sampling cylinder 3 during sampling can be discharged.

[0038] It needs to be explained that when the present application is used, the operating personnel connects the lifting rope on the sampling ship through the hanging hole 33 and the sinking cylinder 1 together, and then drives the ship to the designated area on the sea, and slowly places the sinking cylinder 1 on the seabed through the lifting rope; when the sinking cylinder 1 is about to contact the seabed, the bottom plate 4 contacts the seabed first, and then the sinking cylinder 1 continues to sink under the action of gravity, at this time, the limiting column 23 moves upward relative to the sinking cylinder 1, the limiting column 23 drives the baffle 25 to move upward, the baffle 25 drives the rotating rod 27 to rotate through the clamping rod 26 and the inclined rod 28, the rotating rod 27 drives the top wheel 29 to move away from the lower surface of the fixed block 9, when the bottom surface of the sinking cylinder 1 contacts the seabed, the top wheel 29 moves away from the lower surface of the fixed block 9, at this time, the pressure on the upper surface of the pressure plate 6 by the seawater makes the pressure plate 6 move downward, when the pressure plate 6 moves downward, the air in the fixed cylinder 5 is discharged from the one-way air outlet valve 503, the pressure plate 6 drives the driving rod 8 to move downward, the driving rod 8 drives the fixed block 9 to move downward, the fixed block 9 drives the driving gear 12 to rotate through the guide groove 21 and the pressing rod 10, the driving gear 12 drives the driven gear 13 to rotate, the driven gear 13 drives the sampling cylinder 3 to rotate through the hollow shaft 14, the sampling cylinder 3 scoops the mud on the seabed into its interior through the sampling gap, and seals the sample mud in the interior of the sampling cylinder 3 with the installation cylinder 2, the fixed block 9 drives the connecting rod 19 to move downward, the connecting rod 19 drives the two sliding rods 16 to move close to each other through the driving column 18 and the driving groove 17, the two sliding rods 16 drive the plug 20 to seal the port of the hollow shaft 14, so as to avoid the sample mud from flowing out of the port; after the sampling is completed, the operating personnel lifts the sinking cylinder 1 from the seabed through the lifting rope, due to the arrangement of the one-way air outlet valve 503, the gas in the sealed cavity forms negative pressure after being discharged, at the same time, the fixed cylinder 5 contains seawater above the pressure plate 6, when the sinking cylinder 1 is lifted, the pressure plate 6 does not move, which ensures that the sample mud can be safely collected, when the sinking cylinder 1 is out of water, the collecting box is placed below the sampling cylinder 3, the operating personnel manually opens the gas valve 31, so that air can enter the interior of the sealed cavity, at this time, the pressure plate 6 is reset under the action of the first spring 502, the bottom plate 4 is reset under the action of the second spring 24, at the same time, the sample mud in the sampling cylinder 3 flows into the collecting box through the sampling gap, which is convenient for subsequent detection, through the device, the sampling cost of the marine carbon sink detection is greatly reduced without complex mechanical devices.

[0039] The basic principles and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A sediment sampling device for detecting ocean carbon sink, comprising a sink cylinder (1), a plurality of water holes (32) are formed through the bottom wall of the sink cylinder (1), three hanging holes (33) are equidistantly formed on the circumferential outer surface near the top end of the sink cylinder (1), characterized in that, The lower surface of the sinking cylinder (1) is provided with a plurality of through holes equidistantly penetrating in the circumferential direction, the inner walls of the plurality of through holes are fixedly installed with mounting cylinders (2), the inner walls of the opposite ends of the mounting cylinders (2) are rotatably installed with sampling cylinders (3), the circumferential outer surface of the sampling cylinder (3) is provided with a sampling notch, the circumferential outer surface of the mounting cylinder (2) close to the bottom is provided with the same sampling notch, the outer surfaces of the two ends of the sampling cylinder (3) close to the rotation center are fixedly installed with hollow shafts (14), one end of the hollow shaft (14) is fixedly installed with a driven gear (13) penetrating the outer surface of the mounting cylinder (2), the outer surfaces of the opposite ends of the mounting cylinder (2) are symmetrically rotatably installed with two driving gears (12), the driving gears (12) are engaged with the driven gear (13), the outer surfaces of the two driving gears (12) close to the mounting cylinder (2) are fixedly installed with connecting rods (11), the outer surfaces of the two connecting rods (11) close to the top ends are fixedly installed with a pressing rod (10), the bottom wall of the sinking cylinder (1) at the middle position is fixedly installed with a fixed cylinder (5), the bottom end of the fixed cylinder (5) penetrates the lower surface of the sinking cylinder (1), the inner wall of the fixed cylinder (5) close to the middle is fixedly installed with a partition plate (501), the inner wall of the fixed cylinder (5) close to the top end is slidably installed with a pressure receiving plate (6), the fixed cylinder (5) is divided into a sealed cavity by the partition plate (501) and the pressure receiving plate (6), the lower surface of the partition plate (501) is fixedly installed with a one-way air outlet valve (503), the lower surface of the pressure receiving plate (6) is fixedly installed with a first spring (502), the bottom end of the first spring (502) is fixedly installed with the upper surface of the partition plate (501), the circumferential outer surface of the fixed cylinder (5) close to the top end is equidistantly fixedly installed with a plurality of first limiting sleeves (7), the inner walls of the plurality of first limiting sleeves (7) are slidably installed with driving rods (8), the top ends of the driving rods (8) are fixedly installed with the upper surface of the pressure receiving plate (6), the bottom ends of the driving rods (8) are fixedly installed with fixed blocks (9), the outer surfaces of the fixed blocks (9) are provided with guide grooves (21) penetrating, the pressing rod (10) is slidably installed with the inner walls of the guide grooves (21), the inner walls of a plurality of limiting installation blocks (22) fixedly installed equidistantly between the inner walls of the fixed cylinder (5) close to the bottom are slidably inserted with limiting columns (23), the bottom ends of the limiting columns (23) are fixedly installed with a bottom plate (4) penetrating the lower surfaces of the limiting installation blocks (22), the outer surfaces of the limiting columns (23) are sleeved with second springs (24), the second springs (24) are arranged between the bottom plate (4) and the limiting installation blocks (22), there is a gap between the bottom plate (4) and the inner walls of the fixed cylinder (5), a plurality of openings (30) are equidistantly provided on the circumferential outer surface of the fixed cylinder (5) close to the bottom, the top walls of the plurality of openings (30) are rotatably installed with rotating rods (27), the rotating rods (27) are arranged below the fixed blocks (9),The top wheel (29) is rotatably installed between the inner wall of the one end of the fixed block (9) close to the rotating rod (27), the top wheel (29) is in abutment with the lower surface of the fixed block (9), when the bottom surface of the sinking cylinder (1) is in contact with the seabed, the top wheel (29) is away from the lower surface of the fixed block (9), the lower surface of the other end of the rotating rod (27) is fixedly installed with the inclined rod (28), the inclined rod (28) is obliquely arranged, the top end of the limiting column (23) is fixedly installed with the baffle (25) penetrating through the upper surface of the limiting installation block (22), the circumferential outer surface of the baffle (25) is fixedly installed with two clamping rods (26), the gap is arranged between the two clamping rods (26), the inclined rod (28) is arranged between the two clamping rods (26) and is slidably installed with the same.

2. The sediment sampling device for detecting ocean carbon sink according to claim 1, wherein The bottom wall of the sinking cylinder (1) is fixedly installed with a plurality of groups of second limiting sleeves (15) equidistantly in the circumferential direction, the inner wall of each of the two second limiting sleeves (15) is slidably installed with a sliding rod (16), one end of the sliding rod (16) close to the hollow shaft (14) is fixedly installed with a plug (20), the plug (20) is matched with the inner hole of the hollow shaft (14), the outer surface of the other end of the sliding rod (16) is provided with a driving groove (17), the driving groove (17) is inclinedly arranged, the lower surface of the fixed block (9) is fixedly installed with two connecting rods (19) symmetrically, the outer surface of the two connecting rods (19) close to the bottom is fixedly installed with a driving column (18), and the driving column (18) is slidably installed with the inner wall of the driving groove (17).

3. The sediment sampling device for detecting ocean carbon sink according to claim 1, wherein The circumferential outer surface of the fixed cylinder (5) is fixedly installed with a gas valve (31), the gas valve (31) is communicated with the inside of the fixed cylinder (5), and the gas valve (31) is arranged between the pressure receiving plate (6) and the partition plate (501).

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