An anti-flow structure and sampling device

Abstract

The application discloses an anti-flow structure and a sampling device. The anti-flow structure comprises a body and an anti-flow assembly. The body is provided with a support column arranged along the central axis direction of the body. The anti-flow assembly comprises a mounting shaft, which is sleeved outside the support column. A plurality of anti-flow pieces are arranged in the circumferential direction of the mounting shaft. The anti-flow pieces are used to drive the mounting shaft to rotate to resist the action force of the sea current. The application can improve the anti-flow ability and anti-drift ability of the body, reduce the deviation of the seabed area reached by the body from the preset sea area position, reduce the deviation of the actual position of the body floating out of the water surface from the preset recovery position, guarantee the position accuracy of the body in the preset sea area, and improve the accuracy of ocean environment information collection and the reliability of equipment recovery.

Description

Technical Field

[0001] This application relates to the field of marine environmental parameter measurement technology, and in particular to a current-resistant structure and sampling device. Background Technology

[0002] With the deepening of marine economic development, ecological protection, and national defense security construction, higher requirements have been placed on the efficiency of marine environmental information acquisition and the spatial coverage.

[0003] In related technologies, drones are used to deploy sampling equipment to target sea areas, collecting samples of the marine sediment environment and biological communities to assess the evolution trend of the marine ecological environment. However, during the descent, the sampling equipment is displaced by ocean currents, causing a deviation between the actual seabed area reached and the preset seabed area. Similarly, during the ascent phase after completing the sampling task, the equipment is also affected by ocean currents, causing a deviation between its actual surface location and the preset recovery location. This, in turn, affects the accuracy of marine environmental information collection and the reliability of equipment recovery. Summary of the Invention

[0004] This application aims to at least solve one of the aforementioned technical problems existing in the prior art. Therefore, the purpose of this application is to provide a current-resistant structure that can improve the current-resistant and drift-resistant capabilities of the aircraft, reduce the deviation between the seabed area reached by the aircraft and the predetermined sea area, reduce the deviation between the actual position of the aircraft surfacing and the predetermined recovery position, ensure the accuracy of the aircraft's position within the predetermined sea area, and improve the accuracy of marine environmental information collection and the reliability of equipment recovery.

[0005] This application also proposes a sampling device having the above-mentioned anti-flow structure.

[0006] The anti-flow structure according to a first aspect embodiment of this application includes:

[0007] The body is provided with a support column, which is arranged along the central axis of the body.

[0008] A current-resistant assembly includes a mounting shaft sleeved on the outside of a support column. The mounting shaft is circumferentially provided with multiple current-resistant components, which are used to drive the mounting shaft to rotate in order to resist the force of ocean currents.

[0009] According to the anti-flow structure, the circumferential direction of the mounting shaft is provided with a plurality of anti-flow members, the anti-flow members are used to drive the mounting shaft to rotate to resist the action force of the sea current, the anti-flow ability and the anti-drift ability of the machine body are improved, the deviation of the sea bottom area reached by the machine body from the preset sea area position is reduced, the deviation of the actual position of the machine body from the preset recovery position is reduced, the position accuracy of the machine body in the preset sea area is ensured, and the accuracy of the ocean environment information collection and the reliability of the equipment recovery are improved.

[0010] According to some embodiments of the present application, the anti-flow member comprises a first energy receiving member, the first energy receiving member comprises a head and a tail connected with the head, the tail is connected with the mounting shaft, and the head is provided in a hemispherical shape.

[0011] According to some embodiments of the present application, the included angles between two adjacent first energy receiving members are equal.

[0012] According to some embodiments of the present application, the anti-flow member further comprises a second energy receiving member, the second energy receiving member is sequentially arranged with the first energy receiving member along the axial direction of the support column, and the second energy receiving member can convert the transverse force of the sea current into the lifting force of the mounting shaft.

[0013] According to some embodiments of the present application, the second energy receiving member comprises a base and an extension connected with the base, the extension is connected with the mounting shaft, one side of the base close to the first energy receiving member is a plane, and the other side of the base away from the first energy receiving member is a convex arc surface.

[0014] According to some embodiments of the present application, the anti-flow assembly further comprises a first elastic member, the first elastic member and the mounting shaft are sequentially arranged along the axial direction of the support column, and the first elastic member is in abutment with one end of the mounting shaft.

[0015] According to some embodiments of the present application, the support column is provided with a first limiting portion and a second limiting portion arranged at intervals, the anti-flow assembly is arranged between the first limiting portion and the second limiting portion, the mounting shaft can be in abutment with the first limiting portion, and the first elastic member is in abutment with the second limiting portion.

[0016] According to the sampling device of the second aspect embodiment of the present application, the sampling device comprises the anti-flow structure of the first aspect embodiment of the present application, and further comprises a bottom material sampling mechanism, the bottom material sampling mechanism is arranged at the bottom of the machine body, and the bottom material sampling mechanism is used to sample the bottom sediments of the preset sea area.

[0017] The sampling device according to the embodiments of this application has at least the following beneficial effects: the anti-current structure of this application can improve the anti-current and anti-drift capabilities of the sampling device, enabling the bottom sediment sampling mechanism to collect bottom sediment samples from a preset sea area, which facilitates the measurement of characteristics such as bottom sediment particle size, organic carbon content, and pollutant distribution of the bottom sediments in the preset sea area.

[0018] According to some embodiments of this application, the sediment sampling mechanism includes an outer cylinder, a cone head, a sampling cylinder, and an inner cylinder. The outer cylinder is connected to the machine body, and the outer cylinder is connected to the cone head through a central column. The sampling cylinder is connected to the cone head, and the sampling cylinder is sleeved on the outside of the central column. There is a gap between the sampling cylinder and the outer cylinder to form a sampling port.

[0019] The inner cylinder is slidably connected to the inner side of the outer cylinder, and the inner cylinder is used to expose or close the sampling port.

[0020] According to some embodiments of this application, a sampling pusher is provided in the sampling port, the sampling pusher is rotatably connected to the central column, and the sampling pusher is used to push the bottom sediment into the sampling cylinder.

[0021] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0022] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0024] Figure 2 This is an exploded view of an embodiment of this application;

[0025] Figure 3 for Figure 1 A partial structural schematic diagram of the anti-flow component is shown below;

[0026] Figure 4 This is a cross-sectional view of the sediment sampling mechanism according to an embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the sediment sampling mechanism according to an embodiment of this application;

[0028] Figure 6 for Figure 5 A partial structural schematic diagram of the sediment sampling mechanism shown;

[0029] Figure 7 for Figure 6 The diagram shows a partial structural cross-sectional view of the outer cylinder of the sediment sampling mechanism.

[0030] 100, body; 110, support column; 111, first limiting part; 112, second limiting part;

[0031] 200, substrate sampling mechanism; 210, outer cylinder; 211, chute; 212, guide column; 220, cone head; 230, sampling cylinder; 240, inner cylinder; 241, slide rail; 250, sampling port; 260, lifting assembly; 261, second driving member; 2611, motor; 2612, gear; 2613, rack; 2614, guide wheel; 262, pull rope; 270, second elastic member; 280, sampling shifting member; 290, central column;

[0032] 300, anti-flow assembly; 310, mounting shaft; 320, first energy receiving member; 321, head; 322, tail; 330, second energy receiving member; 331, base; 332, extension; 340, first elastic member. DETAILED DESCRIPTION

[0033] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explaining the present application, and should not be understood as a limitation of the present application.

[0034] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the purpose of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0035] In the description of the present application, if the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than, etc. is understood as not including the number, above, below, etc. is understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0036] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0037] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present description, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] With reference to Figures 1 to 3 , the first aspect embodiment of the present application provides an anti-flow structure, comprising a body 100 and an anti-flow assembly 300, the body 100 is provided with a support column 110, the support column 110 is arranged along the central axis direction of the body 100; the anti-flow assembly 300 comprises a mounting shaft 310, the mounting shaft 310 is sleeved outside the support column 110, a plurality of anti-flow pieces are arranged in the circumferential direction of the mounting shaft 310, the anti-flow pieces are used to drive the mounting shaft 310 to rotate, so as to convert the lateral force of the sea current into the vertical force.

[0039] Specifically, a plurality of anti-flow pieces are arranged in the circumferential direction of the mounting shaft 310, the anti-flow pieces are used to drive the mounting shaft 310 to rotate, so as to resist the action force of the sea current, which can improve the anti-flow ability and anti-drift ability of the body 100, reduce the deviation of the sea bottom area reached by the body 100 from the preset sea area position, reduce the deviation of the actual position of the body 100 floating out of the water from the preset recovery position, guarantee the position accuracy of the body 100 in the preset sea area, and improve the accuracy of ocean environment information collection and the reliability of equipment recovery.

[0040] With reference to Figure 1 , Figure 3 In some implementations, the anti-flow pieces comprise a plurality of first energy receiving pieces 320, the plurality of first energy receiving pieces 320 are arranged in the circumferential direction of the mounting shaft 310, when the body 100 is located in the preset sea area, the sea current pushes the mounting shaft 310 to rotate through the first energy receiving pieces 320, so as to convert the lateral force of the sea current into the vertical force, improve the anti-flow ability and anti-drift ability of the body 100, and guarantee the position accuracy of the body 100 in the preset sea area.

[0041] In some embodiments, the included angles between adjacent two first energy receiving pieces 320 are equal, so that the sea current uniformly acts on each first energy receiving piece 320, and the local pressure borne by a single first energy receiving piece 320 is reduced. In addition, each first energy receiving piece 320 comprises a head portion 321 and a tail portion 322 connected with the head portion 321, the tail portion 322 is connected with the mounting shaft 310, and the head portion 321 is arranged in a hemispherical shape, which can reduce the resistance when the sea current impacts, facilitate the sea current to push the first energy receiving piece 320 to drive the mounting shaft 310 to rotate, and further improve the conversion efficiency of the lateral force of the sea current into the vertical force.

[0042] Reference Figure 1 , Figure 3 In some embodiments, a second energy receiving element 330 is also provided circumferentially on the mounting shaft 310. The first energy receiving element 320 and the second energy receiving element 330 are arranged sequentially along the axial direction of the support column 110. When the mounting shaft 310 rotates, the second energy receiving element 330 can convert the lateral force of the ocean current into the lift force of the mounting shaft 310. Specifically, the second energy-receiving component 330 includes a base 331 and an extension 332 connected to the base 331. The extension 332 is connected to the mounting shaft 310. The side of the base 331 closest to the first energy-receiving component 320 is a flat surface, while the side of the base 331 furthest from the first energy-receiving component 320 is a convex arc-shaped surface. When the second energy-receiving component 330 rotates with the mounting shaft 310, according to the principles of fluid dynamics, the ocean current flows over the arc-shaped surface and the flat surface of the base 331 at different speeds. This causes the base 331 to generate lift and drive the mounting shaft 310 to move axially along the support column 110, thereby converting the lateral force of the ocean current into the lift of the mounting shaft 310. Furthermore, the second energy-receiving component 330, in conjunction with the first energy-receiving component 320, further enhances the current resistance and drift resistance of the aircraft 100, ensuring the positional stability of the aircraft 100 within the predetermined sea area.

[0043] In some embodiments, the second energy-receiving elements 330 are configured in two groups, with three elements in each group. The included angle between any two adjacent second energy-receiving elements 330 within the same group is equal, ensuring that the ocean current acts evenly on each group of second energy-receiving elements 330. This improves the efficiency of converting the lateral force of the ocean current into the lift force of the mounting shaft 310, and ensures the positional accuracy of the body 100 within the preset sea area. Of course, in actual design, the number of second energy-receiving elements 330 can be designed according to actual needs.

[0044] Reference Figure 1 , Figure 3In some embodiments, the anti-flow assembly 300 further comprises a first elastic member 340, which is sequentially arranged with the mounting shaft 310 along the axial direction of the support column 110 and abuts against one end of the mounting shaft 310. When the mounting shaft 310 moves along the axial direction of the support column 110, the mounting shaft 310 will oscillate along the axial direction of the support column 110 under the action of the first elastic member 340, thereby maintaining the stability of the body 100 in the vertical direction, consuming the lateral force of the sea current, and further reducing the positional deviation of the body 100 from the preset sea area. In addition, the support column 110 is provided with a first limiting portion 111 and a second limiting portion 112 arranged at intervals, the anti-flow assembly 300 is arranged between the first limiting portion 111 and the second limiting portion 112, the mounting shaft 310 can abut against the first limiting portion 111, and the first elastic member 340 can abut against the second limiting portion 112. The first limiting portion 111 and the second limiting portion 112 limit the anti-flow assembly 300, thereby preventing the anti-flow assembly 300 from moving excessively along the axial direction of the support column 110 and weakening the anti-flow ability and the anti-drift ability of the body 100.

[0045] In some embodiments, the first elastic member 340 is a spring. Of course, in actual design, the structure of the first elastic member 340 can be designed according to actual needs.

[0046] With reference to Figure 2 , Figure 4 The sampling device of the second aspect embodiment of the present application comprises the anti-flow structure of the first aspect embodiment of the present application and further comprises a bottom material sampling mechanism 200 arranged at the bottom of the body 100, which is used to sample the bottom sediment of the preset sea area.

[0047] Specifically, the anti-flow structure can improve the anti-flow ability and the anti-drift ability of the sampling device, so that the bottom material sampling mechanism 200 can collect the bottom sediment sample of the preset sea area, and the measurement of the characteristics such as the bottom particle size, the organic carbon content, and the pollutant distribution of the bottom sediment of the preset sea area can be facilitated.

[0048] With reference to Figure 4 , Figure 5In some embodiments, the bottom material sampling mechanism 200 comprises an outer cylinder 210, a cone head 220, a sampling cylinder 230 and an inner cylinder 240. The outer cylinder 210 is connected to the machine body 100. The outer cylinder 210 is connected to the cone head 220 through a center column 290. The sampling cylinder 230 is connected to the cone head 220. The sampling cylinder 230 is sleeved outside the center column 290 and has a spacing with the outer cylinder 210 to form a sampling port 250. The inner cylinder 240 is slidingly connected to the inner side of the outer cylinder 210. The inner cylinder 240 is used to expose or close the sampling port 250. When the inner cylinder 240 moves to a preset position in a direction away from the cone head 220, the inner cylinder 240 has a spacing with the sampling cylinder 230 to expose the sampling port 250. The bottom material deposits enter the sampling cylinder 230 through the confining pressure effect generated by the bottom material deposits. When the inner cylinder 240 abuts against the cone head 220, the inner cylinder 240 is sleeved outside the sampling cylinder 230 to close the sampling port 250, thereby sealing the sampling cylinder 230.

[0049] Specifically, the sampling cylinder 230 and the inner cylinder 240 are both provided with a connecting hole, and a part of the center column 290 is arranged in the connecting hole. Under the action of the self-weight of the machine body 100 and the cone head 220, at least a part of the bottom material sampling mechanism 200 on the machine body 100 is inserted into the bottom material deposits. When the inner cylinder 240 moves to a preset position in a direction away from the cone head 220, the sampling port 250 is exposed, thereby collecting the bottom material deposits from the sampling port 250 into the sampling cylinder 230. After the sampling is completed, the inner cylinder 240 moves to abut against the cone head 220 in a direction close to the cone head 220. The inner cylinder 240 is sleeved outside the sampling cylinder 230, and the inner cylinder 240 seals the sampling cylinder 230 to avoid leakage of the collected bottom material deposits and improve the integrity of the bottom material sampling.

[0050] In some embodiments, the depth of the bottom material sampling mechanism 200 inserted into the bottom material deposits is 30-40 cm, which ensures that the outside of the sampling cylinder 230 is surrounded by the bottom material deposits, thereby avoiding the situation of incomplete sampling or insufficient sampling during the sampling process. In addition, the cone head 220 is provided in a conical shape, which facilitates the insertion of the bottom material sampling mechanism 200 into the bottom material deposits.

[0051] Referring to Figure 2 , Figure 5 , Figure 6In some embodiments, the central column 290 is provided with a lifting assembly 260 connected with the inner cylinder 240, which is used to drive the inner cylinder 240 to move axially along the outer cylinder 210. Specifically, the lifting assembly 260 includes a second driving member 261 and a pull rope 262, one end of the pull rope 262 is connected with the driving end of the second driving member 261, and the other end of the pull rope 262 is connected with the inner cylinder 240. When the second driving member 261 pulls the pull rope 262 in a direction away from the cone head 220, the inner cylinder 240 rises to expose the sampling port 250; when the second driving member 261 loosens the pull rope 262 in a direction close to the cone head 220, the inner cylinder 240 descends and is sleeved outside the sampling cylinder 230 to seal the sampling cylinder 230.

[0052] With reference to Figure 2 , Figure 6 , Figure 7 In some embodiments, the second driving member 261 includes a motor 2611, a gear 2612, a rack 2613 and a guide wheel 2614, the motor 2611 is connected with the gear 2612, the gear 2612 is engaged with the rack 2613, the rack 2613 is connected with the pull rope 262 and the pull rope 262 is guided by the guide wheel 2614, the motor 2611 drives the gear 2612 to rotate to drive the rack 2613 to move, and then the inner cylinder 240 is pulled to move axially along the outer cylinder 210 by the pull rope 262. The engagement transmission of the gear 2612 and the rack 2613 ensures the accuracy and stability of power transmission, the guide wheel 2614 standardizes the transmission path of the pull rope 262 to reduce friction and deviation, so that the lifting action of the inner cylinder 240 is more stable and controllable, and the operation accuracy of the bottom material sampling mechanism 200 is improved.

[0053] With reference to Figure 2 , Figure 6 , Figure 7 In some embodiments, the outer side of the inner cylinder 240 is provided with a sliding rail 241, and the inner side of the outer cylinder 210 is provided with a sliding groove 211, the sliding groove 211 is slidingly connected with the sliding rail 241 to provide guidance for the axial movement of the inner cylinder 240 along the outer cylinder 210, reduce the jamming and deviation during movement, so that the lifting action of the inner cylinder 240 is more stable and smooth, and the opening and closing of the sampling port 250 and the sealing connection of the sampling cylinder 230 are guaranteed. At the same time, the cooperation of the sliding rail 241 and the sliding groove 211 enhances the connection stability of the inner cylinder 240 and the outer cylinder 210, avoids the shaking of the inner cylinder 240 during movement, and further improves the operation reliability of the bottom material sampling mechanism 200.

[0054] With reference to Figure 2 , Figure 6 , Figure 7In some embodiments, a guide column 212 is arranged in the chute 211, and the slide rail 241 is provided with a guide hole in which the guide column 212 is arranged. The cooperation between the guide column 212 and the guide hole improves the guiding accuracy of the movement of the inner cylinder 240 and reduces deviation and jam. In addition, the guide column 212 is sleeved with a second elastic member 270 on the outside, one end of the second elastic member 270 abuts against the outer cylinder 210, and the other end of the second elastic member 270 abuts against the inner cylinder 240. When the second driving member 261 pulls the pull rope 262 in a direction away from the cone head 220, the second elastic member 270 is compressed to store elastic potential energy for the reset of the inner cylinder 240; when the second driving member 261 releases the pull rope 262 in a direction close to the cone head 220, the second elastic member 270 recovers, so that the inner cylinder 240 abuts against the cone head 220, thereby sealing the sampling cylinder 230.

[0055] In some embodiments, the second elastic member 270 is arranged as a spring. Of course, in actual design, the structure of the second elastic member 270 can be designed according to actual needs.

[0056] Referring to Figure 2 , Figures 5 to 7 In some embodiments, a sampling member 280 is arranged in the sampling port 250, the sampling member 280 is sleeved on the outside of the central column 290, the sampling member 280 is rotationally connected with the central column 290, and the sampling member 280 is used to stir the bottom sediment into the sampling cylinder 230. Specifically, when the inner cylinder 240 moves away from the cone head 220 to expose the sampling port 250, the sampling member 280 rotates to stir the bottom sediment outside the sampling cylinder 230 into the sampling cylinder 230, thereby improving the sampling efficiency and sampling amount of the bottom sediment.

[0057] In some embodiments, the central column 290 is detachably connected with the cone head 220, which facilitates the taking out of the sampling cylinder 230 to measure the characteristics of the bottom sediment, such as the bottom particle size, organic carbon content, and pollutant distribution, of the bottom sediment in the preset sea area. After the bottom sampling mechanism 200 completes sampling, the body 100 is floated to the sea surface of the preset sea area, and the body 100 is salvaged by an unmanned ship or other equipment, and the central column 290 and the cone head 220 are separated to conveniently take out the sampling cylinder 230 without complex disassembly procedures, thereby improving the convenience of taking and placing the sampling cylinder 230. Specifically, the central column 290 is threadedly connected with the cone head 220 to ensure the connection stability of the central column 290 and the cone head 220 during sampling and to avoid structural loosening during sampling to affect the sampling effect. Of course, the central column 290 and the cone head 220 can be connected by threadedly clamping or other ways, and in actual design, the detachable connection mode of the central column 290 and the cone head 220 can be designed according to actual needs.

[0058] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A flow-resistant structure, characterized in that, include: The body is provided with a support column, which is arranged along the central axis of the body. A current-resistant assembly includes a mounting shaft sleeved on the outside of a support column. Multiple current-resistant components are circumferentially arranged on the mounting shaft, which drive the mounting shaft to rotate to resist the force of ocean currents. Each current-resistant component includes a first energy-receiving component and a second energy-receiving component, arranged sequentially along the axial direction of the support column. The second energy-receiving component converts the lateral force of the ocean current into lift for the mounting shaft. The second energy-receiving component includes a base and an extension connected to the base. The extension is connected to the mounting shaft. The side of the base closest to the first energy-receiving component is planar, and the side of the base furthest from the first energy-receiving component is a convex arcuate surface.

2. The anti-flow structure according to claim 1, characterized in that, The first energy-receiving element includes a head and a tail connected to the head, the tail being connected to the mounting shaft, and the head being configured as a hemispherical shape.

3. The anti-flow structure according to claim 2, characterized in that, The included angle between two adjacent first energy-receiving elements is equal.

4. The anti-flow structure according to claim 1, characterized in that, The anti-flow component further includes a first elastic element, which and the mounting shaft are arranged sequentially along the axial direction of the support column, and the first elastic element abuts against one end of the mounting shaft.

5. The anti-flow structure according to claim 4, characterized in that, The support column is provided with a first limiting part and a second limiting part that are spaced apart. The anti-flow component is disposed between the first limiting part and the second limiting part. The mounting shaft can abut against the first limiting part, and the first elastic element abuts against the second limiting part.

6. A sampling device, comprising the anti-flow structure as described in any one of claims 1 to 5, characterized in that, It also includes a bottom sediment sampling mechanism, which is located at the bottom of the machine body and is used to sample bottom sediments in a preset sea area.

7. The sampling device according to claim 6, characterized in that, The sediment sampling mechanism includes an outer cylinder, a cone, a sampling cylinder, and an inner cylinder. The outer cylinder is connected to the machine body and is connected to the cone through a central column. The sampling cylinder is connected to the cone and is sleeved on the outside of the central column. There is a gap between the sampling cylinder and the outer cylinder to form a sampling port. The inner cylinder is slidably connected to the inner side of the outer cylinder, and the inner cylinder is used to expose or close the sampling port.

8. The sampling device according to claim 7, characterized in that, A sampling device is provided inside the sampling port. The sampling device is rotatably connected to the central column. The sampling device is used to move the bottom sediment into the sampling cylinder.

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