Seabed sediment sampler capable of simultaneously realizing orderly water inlet and outlet

Abstract

The utility model relates to the technical field of ocean underwater geological exploration sampling equipment, and discloses a seabed sediment sampler capable of simultaneously realizing orderly water inlet and outlet, which comprises a placing frame, a plurality of sampling tubes, a plurality of sampling tubes and a plurality of sampling tubes, the connecting seat is arranged on the inner side of the sampling barrel and is matched with the sampling barrel to form a sampling area in the sampling barrel; the connecting piece is arranged on the connecting seat, and a certain distance is formed between the connecting piece and the connecting seat; the water inlet one-way valve assembly is arranged on the connecting base and is used for being opened during diving, seawater enters the sampling area, air in the sampling area is discharged, and it is guaranteed that the sampling barrel is not burst due to the pressure difference. According to the seabed sediment sampler capable of achieving orderly water inlet and outlet at the same time, orderly water inlet and outlet can be achieved, when submersible devices including a manned submersible device and a remote control unmanned submersible device operate underwater, seabed sediment can be smoothly obtained, and other preparatory work is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of marine underwater geological exploration sampling equipment, in particular to a seabed sediment sampler which can simultaneously and orderly realize water inflow and outflow. Background Art

[0002] The bottom and surface sediments contain a large number of life communities such as microorganisms. Using underwater robots to collect seabed surface sediment samples provides important technical support for humans to understand and study the evolution of marine life, changes in the seabed environment, and carry out scientific research on geomechanics, cone tip resistance, side wall friction, etc. of seabed surface sediments.

[0003] The sampler currently used more frequently in underwater robots is a tempered glass tube. According to the need for drainage during sampling, multiple small holes are opened on the top, and a spring is used to support the rubber pad to ensure that the seawater in the sampling tube can be discharged smoothly during sampling. However, after the sampler enters the water, water cannot enter smoothly, which will cause the sampling tube to be compressed and burst under the action of water pressure, making underwater sampling impossible. Although hard gaskets can be placed between the sealing gaskets on the top in advance to ensure that seawater can enter the sampling tube during the dive of the submersible to protect the safety of the sampling tube, these hard gaskets must be removed when the submersible reaches the seabed and prepares for operations before further sampling operations can be carried out. The whole process is relatively cumbersome and complicated. Utility Model Content

[0004] The purpose of the utility model is to realize a seabed sediment sampler that can realize orderly water entry and exit, meet the needs of submersibles including manned submersibles and remote-controlled unmanned submersibles when operating underwater, smoothly obtain seabed sediments, and reduce other preparatory work, and propose a seabed sediment sampler that can realize orderly water entry and exit at the same time.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A seabed sediment sampler capable of simultaneously and orderly entering and exiting water comprises:

[0007] a placement frame, in which a plurality of sampling tubes for storing seabed sediments are arranged;

[0008] A connecting seat is provided on the inner side of the sampling cylinder and cooperates with the sampling cylinder to form a sampling area in the sampling cylinder;

[0009] The connecting piece is arranged on the connecting seat and is spaced a certain distance from the connecting seat;

[0010] The water inlet check valve assembly is set on the connecting seat. It is used to open when diving, allowing seawater to enter the sampling area and exhausting the air in the sampling area to ensure that the sampling tube does not burst due to pressure difference;

[0011] The water outlet one-way valve assembly is arranged between the connecting piece and the connecting seat. It is used to open when sampling deep into the sediment to discharge the seawater in the sampling area and accommodate and store the seabed sediment.

[0012] The water inlet one-way valve assembly comprises:

[0013] The mounting groove is provided on one end portion of the connecting seat located in the sampling tube;

[0014] Large flat head screws that thread into the mounting slots;

[0015] The water guide groove is provided on one end portion of the connecting seat outside the sampling tube;

[0016] A small water inlet hole is provided on the connecting seat and is interconnected with the water guide groove and the installation groove;

[0017] The water inlet elastic abutment is arranged on the large flat head screw and one end of the elastic abutment is abutted against the inner wall of the installation groove.

[0018] On the basis of the above technical solution, the present invention can also be improved as follows.

[0019] Furthermore, a plurality of bottom cylinders are fixedly installed inside the placement frame, the sampling cylinder is interference-connected in the bottom cylinder, and the plurality of bottom cylinders are evenly distributed in an array, and the number and distribution position of the sampling cylinders are matched one by one with the bottom cylinders.

[0020] Furthermore, fastening bolts are provided through the outer wall of the sampling tube, and the fastening bolts are connected to the connecting seat. The number of the fastening bolts is not less than four and they are arranged equidistantly along the circumferential direction of the sampling tube.

[0021] Furthermore, a sealing ring groove is provided on the periphery of the connecting seat, an O-type sealing ring is installed in the sealing ring groove, and the O-type sealing ring is in contact with the inner wall of the sampling tube.

[0022] Furthermore, the connecting member includes a double-headed connecting screw, one end of which is threadedly connected to the center of the connecting seat, and the other end is threadedly connected to a T-shaped handle, and an installation area is separated from the vertical end of the T-shaped handle and the connecting seat.

[0023] Furthermore, the water inlet elastic abutment comprises:

[0024] A water inlet pressure spring is sleeved on the outside of the large flat head screw, and one end of the water inlet pressure spring abuts against the end of the large flat head screw;

[0025] A water inlet pressure plate is fixedly mounted on the other end of the water inlet pressure spring. The water inlet pressure plate is provided through the large flat head screw and can be vertically displaced along the length direction of the large flat head screw.

[0026] The water inlet silicone pad is fixedly installed on one side surface of the water inlet pressure plate. The end of the water inlet silicone pad away from the water inlet compression spring is in contact with the inner wall of the installation groove and is used to block the small water inlet hole.

[0027] Furthermore, the number of the small water inlet holes is not less than six and they are equidistantly distributed in a circular shape according to the center of the water inlet silicone pad. When the water inlet silicone pad fits against the inner wall of the mounting groove, the small water inlet holes can be covered.

[0028] Furthermore, the water outlet one-way valve assembly includes:

[0029] Large water outlet holes are provided on the connecting seat, and the number of the large water outlet holes is not less than five and they are evenly spaced and fan-shaped;

[0030] The water outlet compression spring is sleeved on the outside of the double-headed connecting screw and one end of the spring abuts against the vertical end of the T-shaped handle;

[0031] The water outlet pressure plate is fixedly mounted on the other end of the water outlet pressure spring. The water outlet pressure plate is provided through the double-headed connecting screw. The water outlet pressure plate can be vertically displaced along the length direction of the double-headed connecting screw.

[0032] The water outlet silicone pad is fixedly installed on the side surface of the water outlet pressure plate close to the connecting seat.

[0033] Furthermore, when the water outlet silicone pad contacts the surface of the connecting seat, the large water outlet hole can be covered, and the vertical projection surface of the water outlet silicone pad covers three-quarters of the water guide groove.

[0034] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0035] The placement frame provided by the present invention is provided with a plurality of sampling tubes for storing seabed sediments, which can realize the simultaneous collection of multiple samples and improve the sampling efficiency. The connecting seat is provided on the inner side of the sampling tube and cooperates with the sampling tube to form a sampling area, which provides a clear space for the collection of sediments. The connecting piece is provided on the connecting seat and is spaced a certain distance from the connecting seat. Such a structural design provides a reasonable spatial layout for the installation and operation of subsequent components such as the one-way valve assembly. The key lies in the water inlet one-way valve assembly, which is provided on the connecting seat and can be automatically opened when diving, so that seawater can smoothly enter the sampling area. The air in the sampling area is discharged and the sampling tube is filled with water. This fundamentally solves the problem that the sampling tube is burst under water pressure because water cannot enter the sampling tube smoothly. There is no need to use cumbersome operations such as padding hard gaskets to ensure the entry of seawater, which ensures the safety of the sampling tube and avoids the situation where sampling cannot be performed due to the bursting of the sampling tube. At the same time, the water outlet one-way valve assembly is arranged between the connecting piece and the connecting seat. It is opened when sampling deep into the sediment, which can discharge the seawater in the sampling area in time and accommodate and store seabed sediments, realizing the orderly discharge of seawater during the sampling process and ensuring the smooth progress of sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the overall connection structure of the utility model;

[0037] Figure 2 This is a schematic diagram of the connection structure between the connecting seat and the connecting piece of the utility model;

[0038] Figure 3 This is a schematic diagram of the connection structure of the sampling tube of the utility model under normal conditions;

[0039] Figure 4 This is a schematic diagram of the cross-sectional connection structure of the sampling tube of the utility model under normal conditions;

[0040] Figure 5 For this utility model Figure 4 Enlarged view of point A in the middle;

[0041] Figure 6 This is a schematic diagram of the connection structure between the large flat head screw and the water inlet elastic abutment of the utility model;

[0042] Figure 7 This is a schematic diagram of the connection structure of the utility model when the water outlet one-way valve assembly is opened;

[0043] Figure 8 This is a schematic diagram of the connection structure of the open water inlet one-way valve assembly of the utility model.

[0044] In the figure: 1. Placement frame; 2. Sampling tube; 3. Connecting seat; 4. Connecting part; 41. Double-head connecting screw; 42. T-shaped handle; 5. Water inlet one-way valve assembly; 51. Mounting slot; 52. Large flat head screw; 53. Water guide groove; 54. Small water inlet hole; 55. Water inlet elastic actuating part; 551. Water inlet pressure spring; 552. Water inlet pressure plate; 553. Water inlet silicone pad; 6. Water outlet one-way valve assembly; 61. Large water outlet hole; 62. Water outlet pressure spring; 63. Water outlet pressure plate; 64. Water outlet silicone pad; 7. Bottom tube; 8. Fastening bolt; 9. O-ring. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] Combine Figures 1-8 As shown, the utility model is a seabed sediment sampler that can simultaneously and orderly achieve water inflow and outflow, comprising:

[0047] A placement frame 1, which contains a plurality of sampling tubes 2 for storing seabed sediments;

[0048] The connecting seat 3 is provided inside the sampling tube 2 and cooperates with the sampling tube 2 to form a sampling area inside the sampling tube 2;

[0049] The connecting member 4 is provided on the connecting seat 3 and is spaced a certain distance from the connecting seat 3;

[0050] The water inlet check valve assembly 5 is provided on the connecting seat 3 and is used to open when diving, allowing seawater to enter the sampling area and exhausting the air in the sampling area to ensure that the sampling tube does not burst due to pressure difference;

[0051] The water outlet one-way valve assembly 6 is arranged between the connecting piece 4 and the connecting seat 3. It is used to open when sampling deep into the sediment to discharge the seawater in the sampling area and accommodate and store the seabed sediment.

[0052] When the submarine is working, the placing frame 1 is fixed in the sample platform of the bow of the submarine, and the sampling tube 2 is inserted in the placing frame 1 in a non-fastened form. The manipulator can easily take out each sampling tube 2 during sampling. The sampling tube 2 and the placing frame 1 are used in conjunction with each other. The sampling tube 2 is inserted in the placing frame 1 by its own gravity, which can resist a certain degree of impact of water surface waves to prevent samples from falling. When the submarine dives, the multiple sampling tubes 2 in the placing frame 1 dive together. During this diving process, the water inlet one-way valve assembly 5 set on the connecting seat 3 automatically opens due to the external water pressure, and seawater enters the sampling area formed by the connecting seat 3 and the sampling tube 2 along the opened water inlet one-way valve assembly 5, and the sample is taken. The air originally existing in the sampling area is discharged, balancing the pressure inside and outside the sampling tube 2, thereby ensuring that the sampling tube 2 will not be burst by the water pressure due to excessive pressure difference. When the underwater robot reaches the seabed and begins to go deep into the sediment for sampling operations, the water outlet one-way valve assembly 6 arranged between the connecting piece 4 and the connecting seat 3 is automatically opened due to the squeezing of the sediment and the change of internal pressure during the process of the sampling tube 2 going deep into the sediment. At this time, the seawater in the sampling area is smoothly discharged through the opened water outlet one-way valve assembly 6, making room for the seabed sediment to enter the sampling area, so that the seabed sediment can smoothly enter the sampling area and be stored in the sampling tube 2, finally completing the sampling of the seabed sediment.

[0053] In a preferred embodiment, the present invention can be further configured as follows: Figure 1 As shown, the placement frame 1 has several bottom cylinders 7 fixedly mounted inside, and the sampling tube 2 is interference-connected within the bottom cylinders 7. The multiple bottom cylinders 7 are evenly spaced in an array, and the number and distribution position of the sampling tubes 2 are adapted to the bottom cylinders 7 one by one. During the operation of this seabed sediment sampler, the placement frame 1 serves as the basic supporting structure of the entire sampler, and the multiple bottom cylinders 7 fixedly mounted inside it play a role in stably supporting and accurately positioning the sampling tube 2. Because the sampling tube 2 is interference-connected within the bottom cylinder 7, this connection method ensures that the sampling tube 2 is firmly installed in the placement frame 1, preventing the sampling tube 2 from loosening and shifting due to factors such as water flow impact and mechanical vibration during the underwater robot's dive and sampling process, ensuring that the sampling tube 2 is always in the correct working position. The multiple bottom cylinders 7 are evenly spaced in an array, and the number and distribution position of the sampling tube 2 are adapted to the bottom cylinder 7 one by one. This layout ensures that the multiple sampling tubes 2 are evenly distributed within the placement frame 1. During the diving process, the water inlet one-way valve assembly 5 on each sampling tube 2 can work independently and stably.

[0054] In a preferred embodiment, the present invention can be further configured as follows: Figure 2 、 Figure 3As shown, a fastening bolt 8 is provided through the outer wall of the sampling tube 2, and the fastening bolt 8 is connected to the connecting seat 3. The number of the fastening bolts 8 is not less than four and they are arranged equidistantly along the circumferential direction of the sampling tube 2. The fastening bolts 8 can evenly apply fastening force from multiple directions to ensure the stability and reliability of the connection between the connecting seat 3 and the sampling tube 2. During the dive, the external seawater pressure gradually increases. At this time, the fastening bolts 8 ensure that the connecting seat 3 and the sampling tube 2 will not produce relative displacement due to the pressure, thereby maintaining the integrity of the sampling area formed by their cooperation. The equidistantly arranged fastening bolts 8 can evenly disperse these external forces to avoid local excessive force causing loose connection.

[0055] In a preferred embodiment, the present invention can be further configured as follows: Figure 2 、 Figure 5 As shown; a sealing ring groove is opened on the circumference of the connecting seat 3, and an O-ring 9 is installed in the sealing ring groove. The O-ring 9 fits tightly against the inner wall of the sampling tube 2 to form a reliable sealing structure. This sealing effect can effectively prevent the seabed sediment from leaking from the connection between the connecting seat 3 and the sampling tube 2, thereby ensuring the integrity and accuracy of the seabed sediment samples collected in the sampling area.

[0056] In a preferred embodiment, the present invention can be further configured as follows: Figure 2 、 Figure 5 As shown; the connecting member 4 includes a double-headed connecting screw 41, one end of the double-headed connecting screw 41 is threadedly connected to the center of the connecting seat 3, and the other end is threadedly connected to a T-shaped handle 42, and an installation area is spaced between the vertical end of the T-shaped handle 42 and the connecting seat 3. One end of the double-headed connecting screw 41 is threadedly connected to the center of the connecting seat 3. This connection method is stable and easy to disassemble and install, ensuring a reliable connection between the connecting member 4 and the connecting seat 3. The T-shaped handle 42 threaded at the other end is convenient for a robot to hold and operate, and the installation area formed between the vertical end of the T-shaped handle 42 and the connecting seat 3 provides a reasonable installation space for the water outlet one-way valve assembly 6.

[0057] In a preferred embodiment, the present invention can be further configured as follows: Figure 5 、 Figure 6 As shown; the water inlet one-way valve assembly 5 includes:

[0058] The mounting groove 51 is provided on one end portion of the connecting seat 3 located inside the sampling tube 2;

[0059] A large flat head screw 52 is threaded into the mounting slot 51;

[0060] The water guide groove 53 is provided on one end portion of the connecting seat 3 outside the sampling tube 2;

[0061] The small water inlet hole 54 is provided on the connecting seat 3 and is in communication with the water guide groove 53 and the mounting groove 51;

[0062] The water inlet elastic abutment 55 is arranged on the large flat head screw 52 and one end of which abuts against the inner wall of the mounting groove 51. During the diving process of the seabed sediment sampler, the various components of the water inlet one-way valve assembly 5 work together to ensure the safety of the sampling tube 2. The mounting groove 51 provided on the connecting seat 3 is located at one end of the sampling tube 2, which provides an installation space for the internal components of the water inlet one-way valve assembly 5. The large flat head screw 52 threadedly connected to the mounting groove 51 plays a fixing and limiting role. The water guide groove 53 provided on the connecting seat 3 is located at one end of the outside of the sampling tube 2, and the small water inlet through hole 54 provided on the connecting seat 3 and connected to the water guide groove 53 and the mounting groove 51 constitute a channel for seawater to enter the sampling tube 2, and the water inlet elastic abutment 55 is provided on the large flat head screw 52 and one end of which abuts against the inner wall of the mounting groove 51. The water elastic abutment 55 is a key component for controlling the entry of seawater. As the diving depth increases, the external water pressure gradually increases. When the water pressure is greater than the design pressure of the water inlet elastic abutment 55, the water inlet elastic abutment 55 is compressed, and seawater can smoothly enter the sampling tube 2 through the water guide groove 53, the water inlet small through hole 54 and the installation groove 51. In this process, since the pressure conditions at this time do not reach the opening pressure of the water outlet one-way valve assembly 6, the water outlet one-way valve assembly 6 does not move and remains closed, thereby ensuring that seawater can only flow in one direction. As seawater continues to enter, the air in the sampling tube 2 is gradually discharged, and the air in the tube is replaced by seawater, balancing the internal and external pressures of the sampling tube 2, and effectively preventing the sampling tube 2 from bursting due to excessive internal and external pressure difference, laying a safe foundation for subsequent seabed sediment sampling work.

[0063] In a preferred embodiment, the present invention can be further configured as follows: Figure 5 、 Figure 6 As shown; the water inlet elastic abutment member 55 includes:

[0064] The water inlet pressure spring 551 is sleeved on the outside of the large flat head screw 52, and one end of the water inlet pressure spring 551 abuts against the end of the large flat head screw 52;

[0065] The water inlet pressure plate 552 is fixedly mounted on the other end of the water inlet pressure spring 551. The water inlet pressure plate 552 is provided through the large flat head screw 52. The water inlet pressure plate 552 can be vertically displaced along the length direction of the large flat head screw 52.

[0066] The water inlet silicone pad 553 is fixedly installed on one side surface of the water inlet pressure plate 552. The end of the water inlet silicone pad 553 away from the water inlet pressure spring 551 is in contact with the inner wall of the installation groove 51 and is used to block the small water inlet hole 54. During the diving process of the seabed sediment sampler, the water inlet elastic abutment 55 serves as the core pressure control component of the water inlet one-way valve assembly 5. Its internal components work closely together. The water inlet pressure spring 551 sleeved on the outside of the large flat head screw 52 abuts against the end of the large flat head screw 52 at one end to provide elastic support for the entire elastic abutment structure. The water inlet pressure plate 552 fixedly installed on the other end of the water inlet pressure spring 551 is penetrated by the large flat head screw 52. On the upper side, it can be vertically displaced along the length direction of the large flat head screw 52, which plays the role of transmitting pressure and driving the sealing component to move. The end of the water inlet silicone pad 553 away from the water inlet pressure spring 551 is in contact with the inner wall of the installation groove 51, which is used to seal the small water inlet hole 54 to form an initial sealing state. During the dive, as the depth increases, the external water pressure gradually increases. When the water pressure exceeds the spring design pressure of the water inlet pressure spring 551, the water pressure overcomes the elastic force of the spring, pushing the water inlet pressure plate 552 and the water inlet silicone pad 553 connected thereto to move downward along the large flat head screw 52, opening the small water inlet hole 54, and seawater enters the sampling tube 2 through the water guide groove 53 and the small water inlet hole 54, gradually discharging the air in the tube.

[0067] In a preferred embodiment, the present invention can be further configured as follows: Figure 2 、 Figure 5 As shown; the number of the small water inlet holes 54 is not less than six and they are equidistantly distributed in a circular pattern according to the center of the water inlet silicone pad 553. When the water inlet silicone pad 553 and the inner wall of the mounting groove 51 fit together, the small water inlet holes 54 can be covered. In the initial state, the water inlet silicone pad 553 and the inner wall of the mounting groove 51 fit together, completely covering the small water inlet holes 54, forming a sealing structure to prevent seawater from infiltrating in advance when the opening pressure is not reached. As the diving depth increases, the external water pressure gradually increases. When the water pressure exceeds the design pressure of the water inlet compression spring 551, the water inlet silicone pad 553 and the inlet The water pressure plate 552 is pushed open. Since the small water inlet holes 54 are evenly distributed, the inflow of seawater is more balanced, which can quickly and fully replace the air in the sampling tube 2, effectively balance the pressure inside and outside the sampling tube 2, and avoid the sampling tube 2 bursting due to excessive pressure difference between the inside and outside due to uneven local pressure or slow inflow of seawater. At the same time, the design of multiple small water inlet holes 54 also ensures that even if individual small holes are blocked by impurities, other small holes can still ensure the normal inflow of seawater, thereby improving the stability and reliability of the water inlet one-way valve assembly 5 and providing protection for the safe diving and effective sampling of the seabed sediment sampler.

[0068] In a preferred embodiment, the present invention can be further configured as follows: Figure 4 、 Figure 5As shown; the water outlet one-way valve assembly 6 includes:

[0069] The large water outlet holes 61 are provided on the connecting base 3. The number of the large water outlet holes 61 is not less than five and they are evenly spaced in a fan shape.

[0070] The water outlet pressure spring 62 is sleeved on the outside of the double-headed connecting screw 41 and one end of the spring abuts against the vertical end of the T-shaped handle 42;

[0071] The water outlet pressure plate 63 is fixedly mounted on the other end of the water outlet pressure spring 62. The water outlet pressure plate 63 is provided through the double-headed connecting screw 41. The water outlet pressure plate 63 can be vertically displaced along the length direction of the double-headed connecting screw 41.

[0072] The water outlet silicone pad 64 is fixedly installed on the side surface of the water outlet pressure plate 63 close to the connecting seat 3. When the seabed sediment sampler is performing sampling operations, the various components of the water outlet one-way valve assembly 6 work together to realize the functions of seawater discharge and sediment collection. No less than five large water outlet holes 61 are opened on the connecting seat 3 and are evenly distributed in a fan shape, providing a channel for the discharge of seawater in the sampling area. The water outlet compression spring 62, which is sleeved on the outside of the double-headed connecting screw 41 and one end is abutted against the vertical end of the T-shaped handle 42, provides elastic resistance for the entire water outlet one-way valve assembly 6, so that the water outlet pressure plate 63 and the water outlet silicone pad 64 remain in a closed state when the specific pressure is not reached, preventing seawater from flowing out of the channel abnormally during the dive. The water outlet pressure plate 63 vertically displaces along the length of the screw, which plays a role in transmitting pressure and driving the action of the sealing component. The initial state of the water outlet silicone pad 64 When the sampler goes deep into the seabed sediment to take samples, the sampling tube 2 is subjected to the upward resistance of the sediment and the change of the internal seawater pressure, so that the pressure acting on the water outlet pressure plate 63 gradually increases. When the pressure exceeds the elastic force of the water outlet compression spring 62, the water outlet pressure plate 63 drives the water outlet silicone pad 64 to overcome the spring resistance and move upward along the double-headed connecting screw 41 to open the water outlet large through hole 61. The seawater in the sampling area is smoothly discharged through these fan-shaped and evenly distributed water outlet large through holes 61, and at the same time, space is made for the seabed sediment to enter the sampling area, completing the sediment collection work. During the diving process, since the pressure has not reached the opening condition, the water outlet one-way valve assembly 6 remains closed, which does not affect the normal operation of the water inlet one-way valve assembly 5, ensuring the safe diving of the sampler and balancing the internal and external pressures of the sampling tube 2.

[0073] In a preferred embodiment, the present invention can be further configured as follows: Figure 5 、 Figure 7As shown; when the water outlet silicone pad 64 contacts the surface of the connecting seat 3, it can cover the large water outlet hole 61. The vertical projection surface of the water outlet silicone pad 64 covers three-quarters of the water guide groove 53. During the operation of the seabed sediment sampler, the water outlet silicone pad 64 in the water outlet one-way valve assembly 6 plays a key sealing and control role. When the sampler is in the diving stage, the external water pressure gradually increases. At this time, it is mainly the water inlet one-way valve assembly 5 that plays a role, ensuring that seawater can smoothly enter the sampling tube 2 from the uncovered one-quarter position of the water guide groove 53 to balance the internal and external pressures, and prevent the sampling tube 2 from bursting due to excessive pressure difference. Crack, and the water outlet silicone pad 64 contacts with the surface of the connecting seat 3, completely covering the large water outlet through-hole 61. This covering design forms a good sealing effect, which can effectively prevent seawater from flowing out of the sampling tube 2 through the large water outlet through-hole 61 at this stage, and ensure that only through the orderly inflow of water through the water inlet one-way valve assembly 5 can the sampling area be filled and the air be discharged. The contact and separation of the water outlet silicone pad 64 and the connecting seat 3, as well as its covering and exposure control of the large water outlet through-hole 61, enable the water outlet one-way valve assembly 6 to dive and sample according to different working stages, accurately control the inflow and outflow of seawater, and ensure the normal operation of the sampler.

[0074] The specific working principle of the seabed sediment sampler of the utility model which can realize orderly water inflow and outflow at the same time is as follows:

[0075] First, the placement frame 1 is fixedly installed in the bow sample platform of the submersible. Since the sampling tube 2 is inserted into the bottom tube 7 in the placement frame 1 by its own gravity and is connected with the bottom tube 7 in an interference fit, this ensures that the sampling tube 2 is firmly installed while facilitating the operation of the manipulator. During installation, the connecting seat 3 is tightly connected to the sampling tube 2 by tightening the bolts 8. At the same time, the O-ring 9 installed around the connecting seat 3 fits with the inner wall of the sampling tube 2 to form a sealing structure to ensure that the sample does not leak during the sampling process.

[0076] Then, the T-shaped handle 42 is grasped by the manipulator. During the diving process, the external water pressure gradually increases. When the water pressure exceeds the design pressure of the water inlet pressure spring 551, the water inlet elastic abutment 55 starts to work. The water inlet pressure plate 552 and the water inlet silicone pad 553 overcome the spring force under the action of water pressure and move along the large flat head screw 52 to open the no less than six small water inlet holes 54 distributed in an annular manner and equidistantly covered by the water inlet silicone pad 553. Seawater enters the sampling area formed by the connecting seat 3 and the sampling tube 2 through the water guide groove 53, the small water inlet holes 54 and the installation groove 51 on the outside of the connecting seat 3, discharges the internal air, balances the pressure inside and outside the sampling tube 2, and prevents it from bursting due to the pressure difference. At this time, since the pressure has not reached the opening condition of the water outlet one-way valve assembly 6, the water outlet silicone pad 64 is tightly attached to the connecting seat 3, covering the large water outlet hole 61, preventing seawater from flowing out of the water outlet channel, ensuring the one-way inflow of seawater.

[0077] When the submersible reaches the seabed and begins to sample sediments in depth, the sampling barrel 2 is subjected to the upward resistance of the sediment and the change in internal seawater pressure during its penetration into the sediment, causing the pressure acting on the water outlet pressure plate 63 to gradually increase. When this pressure exceeds the elastic force of the water outlet compression spring 62, it drives the water outlet silicone pad 64 to overcome the spring resistance and move upward along the double-headed connecting screw 41, opening the fan-shaped and evenly spaced large water outlet holes 61 of no less than five. At this time, the seawater in the sampling area is smoothly discharged through the large water outlet holes 61, making room for the seabed sediment to enter the sampling area, so that the seabed sediment can smoothly enter the sampling area and be stored in the sampling barrel 2.

[0078] After the sampling is completed, the submersible returns to the surface carrying the sampler containing the seabed sediment sample, completing the entire seabed sediment sampling work. In this series of processes, the various components cooperate with each other to ensure the orderly entry and exit of the sampler in the water and efficient and stable sampling.

[0079] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0080] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A seabed sediment sampler capable of simultaneously and orderly entering and exiting water, characterized in that: include: A placement frame (1) having a plurality of sampling tubes (2) for storing seabed sediments disposed therein; A connecting seat (3) is arranged on the inner side of the sampling cylinder (2) and cooperates with the sampling cylinder (2) to form a sampling area in the sampling cylinder (2); A connecting member (4) is arranged on the connecting seat (3) and is spaced a certain distance from the connecting seat (3); A water inlet check valve assembly (5) is provided on the connecting seat (3) and is used to open during diving, allowing seawater to enter the sampling area and exhausting the air in the sampling area to ensure that the sampling tube does not burst due to pressure difference; A water outlet one-way valve assembly (6) is provided between the connecting member (4) and the connecting seat (3), and is used to open when sampling deep into the sediment to discharge the seawater in the sampling area and accommodate and store the seabed sediment; The water inlet one-way valve assembly (5) comprises: A mounting groove (51) is provided on one end portion of the connecting seat (3) located inside the sampling tube (2); A large flat head screw (52) threadedly connected to the mounting slot (51); A water guide groove (53) is provided on an end portion of the connecting seat (3) located outside the sampling tube (2); A small water inlet hole (54) is provided on the connecting seat (3) and is in communication with the water guide groove (53) and the mounting groove (51); The water inlet elastic abutment (55) is arranged on the large flat head screw (52) and one end of which abuts against the inner wall of the installation groove (51).

2. A seabed sediment sampler capable of simultaneously and orderly entering and exiting water according to claim 1, characterized in that: A plurality of bottom cylinders (7) are fixedly installed inside the placement frame (1), and the sampling cylinder (2) is interference-connected in the bottom cylinder (7). The plurality of bottom cylinders (7) are distributed in an array at equal intervals, and the number and distribution positions of the sampling cylinders (2) are matched one by one with the bottom cylinders (7).

3. The seabed sediment sampler capable of simultaneously and orderly entering and exiting water according to claim 1, characterized in that: A fastening bolt (8) is provided through the outer wall of the sampling tube (2), and the fastening bolt (8) is connected to the connecting seat (3). The number of the fastening bolts (8) is not less than four and they are arranged equidistantly in the circumferential direction of the sampling tube (2).

4. The seabed sediment sampler capable of simultaneously and orderly entering and exiting water according to claim 1, characterized in that: A sealing ring groove is provided on the periphery of the connecting seat (3), an O-type sealing ring (9) is installed in the sealing ring groove, and the O-type sealing ring (9) is in contact with the inner wall of the sampling tube (2).

5. The seabed sediment sampler capable of simultaneously and orderly entering and exiting water according to claim 1, characterized in that: The connecting member (4) comprises a double-headed connecting screw (41), one end of which is threadedly connected to the center of the connecting seat (3), and the other end of which is threadedly connected to a T-shaped handle (42), with a mounting area spaced between the vertical end of the T-shaped handle (42) and the connecting seat (3).

6. The seabed sediment sampler capable of simultaneously and orderly entering and exiting water according to claim 1, characterized in that: The water inlet elastic abutment (55) comprises: A water inlet pressure spring (551) is sleeved on the outside of the large flat head screw (52), and one end of the water inlet pressure spring (551) abuts against the end of the large flat head screw (52); A water inlet pressure plate (552) is fixedly mounted on the other end of the water inlet pressure spring (551), and the water inlet pressure plate (552) is provided through the large flat head screw (52). The water inlet pressure plate (552) can be vertically displaced along the length direction of the large flat head screw (52); The water inlet silica gel pad (553) is fixedly mounted on one side surface of the water inlet pressure plate (552), and one end of the water inlet silica gel pad (553) away from the water inlet pressure spring (551) is in contact with the inner wall of the mounting groove (51) and is used to block the small water inlet hole (54).

7. The seabed sediment sampler capable of achieving orderly water inflow and outflow according to claim 6, characterized in that: The number of the small water inlet holes (54) is not less than six and they are equidistantly distributed in a circular pattern according to the center of the water inlet silica gel pad (553). When the water inlet silica gel pad (553) and the inner wall of the mounting groove (51) are in contact with each other, the small water inlet holes (54) can be covered.

8. The seabed sediment sampler capable of achieving orderly water inflow and outflow according to claim 7, characterized in that: The water outlet one-way valve assembly (6) comprises: Large water outlet holes (61) are provided on the connecting seat (3), wherein the number of the large water outlet holes (61) is not less than five and they are evenly spaced and distributed in a fan-shaped pattern; A water outlet compression spring (62) is sleeved on the outside of the double-headed connecting screw (41) and one end of which abuts against the vertical end of the T-shaped handle (42); A water outlet pressure plate (63) is fixedly mounted on the other end of the water outlet pressure spring (62), and the water outlet pressure plate (63) is provided through the double-headed connecting screw (41). The water outlet pressure plate (63) can be vertically displaced along the length direction of the double-headed connecting screw (41); The water outlet silica gel pad (64) is fixedly mounted on a side surface of the water outlet pressure plate (63) close to the connecting seat (3).

9. The seabed sediment sampler capable of achieving orderly water inflow and outflow according to claim 8, characterized in that: When the water outlet silica gel pad (64) and the surface of the connecting seat (3) are in contact with each other, the large water outlet through hole (61) can be covered, and the vertical projection surface of the water outlet silica gel pad (64) covers three-quarters of the water guide groove (53).

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