Offshore coastal zone monitoring sampling device

Abstract

The application discloses a kind of offshore coastal zone monitoring sampling device, comprising: fixed component, suspended shell and flow direction mark;Suspended shell includes shell and shell cover, shell is fixedly connected with shell cover by several bolts, flow direction mark is fixedly installed on the top surface of shell cover, the top surface of shell cover is rotatably connected with the fixed rod for external accessory, the bottom surface of shell is rotatably connected with fixed component, the side wall of shell inner cavity is provided with annular T-shaped slot, T-shaped ring is slidably connected in T-shaped slot, a plurality of through holes are formed at equal intervals in the side wall of T-shaped ring, plug hole and water inlet hole are formed in the side surface of shell, sealing assembly is fixedly connected to the outer side surface of shell, sealing assembly is communicated with plug hole, sampling assembly is adapted in through hole, sampling assembly is detachably connected with driving assembly, driving assembly is fixedly connected with the bottom surface of shell inner cavity;Shell is fixedly connected and communicated with first check valve, shell cover is fixedly connected and communicated with inflation nozzle.The application can realize the monitoring of different seawater depth, different flowing direction of ocean current.

Description

Technical Field

[0001] This invention relates to the field of marine sampling and monitoring technology, and in particular to a nearshore coastal zone monitoring and sampling device. Background Technology

[0002] The ocean is the second largest of the four strategic spaces for human development (land, sea, air, and space), and a vast, untapped treasure trove of resources on Earth. High-tech marine technologies are increasingly becoming a focal point of economic and technological competition among nations worldwide. Three-quarters of the world's marine economy originates in the coastal zone. The coastal zone plays a vital role in my country's economic and social development. "Understanding the laws of the coastal zone and supporting sustainable development"—focusing on solving major scientific and technological problems concerning national strategic needs—is our current important mission. Coastal zone environmental analysis and monitoring are fundamental to understanding the laws of the coastal zone and nearshore marine ecological environment, providing scientific and technological support for building an ecological security framework and promoting the sustainable development of the national marine economy.

[0003] Monitoring the coastal environment is inseparable from monitoring ocean currents. As we all know, ocean currents play an important role in the ocean's circulation system. Ocean currents not only facilitate the exchange of seawater at different temperatures, but also push seawater from different geographical locations to other parts of the earth during the exchange process. Therefore, monitoring the water quality of ocean currents is particularly important. Moreover, different seawater depths have different current flow directions. Therefore, it is necessary to design a nearshore coastal zone monitoring and sampling device to complete the water quality sampling and monitoring of nearshore coastal ocean currents. Summary of the Invention

[0004] The purpose of this invention is to provide a nearshore coastal zone monitoring and sampling device to solve the problems existing in the prior art, and to enable the monitoring of ocean currents at different seawater depths and in different flow directions.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] A nearshore coastal zone monitoring and sampling device includes: a fixed assembly, a suspended shell, and a current indicator; the suspended shell includes a shell and a shell cover, the shell being fixedly connected to the shell cover by several bolts, the current indicator being fixedly installed on the top surface of the shell cover, a fixing rod for external attachment being rotatably connected to the center of the top surface of the shell cover, the center of the bottom surface of the shell being rotatably connected to the fixed assembly, an annular T-shaped groove being formed on the inner wall of the shell, a T-shaped ring being slidably connected in the T-shaped groove, several through holes being formed at equal intervals on the side wall of the T-shaped ring, a plug hole and a water inlet hole being formed on the side of the shell, the through holes and the water inlet hole being adapted to each other, a sealing assembly being fixedly connected to the outer surface of the shell, the sealing assembly communicating with the plug hole, a sampling assembly being adapted in the through hole, a driving assembly being detachably connected to the sampling assembly, and the driving assembly being fixedly connected to the bottom surface of the inner cavity of the shell; a first one-way valve being fixedly connected and communicated with the shell, and an air inlet being fixedly connected and communicated with the shell cover.

[0007] Preferably, the sampling assembly includes a sampling bottle and a rubber ring, the rubber ring is fixedly installed at the mouth of the sampling bottle, the outer side of the rubber ring is adapted to the through hole, and the side of the sampling bottle is detachably connected to the driving assembly.

[0008] Preferably, the driving assembly includes a drive motor, several bottle clamps and a pressure roller ring. The bottle clamps are fixedly connected to the inner wall of the pressure roller ring via a connecting block. The top surface of the pressure roller ring slides in contact with the bottom surface of the shell cover. The bottle clamps are detachably connected to the sampling bottle. A collar is fixedly connected to one end of the connecting block away from the pressure roller ring. The collar is detachably connected to the output shaft of the drive motor.

[0009] Preferably, a pressure platform is fixed to the bottom surface of the shell cover, the side of the pressure platform is adapted to the top of the inner cavity side wall of the shell, the bottom surface of the pressure platform is in sliding contact with the top surface of the pressure roller ring, a sealing gasket is provided between the bottom surface of the shell cover and the top surface of the shell, and the inflation nozzle passes through the pressure platform and communicates with the inner cavity of the shell.

[0010] Preferably, the sealing assembly includes a sealing cylinder, one end of which is closed, and the other end of which is fixedly connected to the outer side of the housing. One open end of the sealing cylinder is adapted to and connected to the plug hole. A plurality of bottle stoppers are slidably connected inside the sealing cylinder, with adjacent bottle stoppers abutting against each other. A spring is fixedly connected to the end face of the inner cavity of the sealing cylinder, and one end of the spring abuts against the end face of the bottle stopper adjacent to the spring.

[0011] Preferably, the bottle stopper is hollow and vacuum-sealed, and a second one-way valve is fixedly connected to one end of the bottle stopper near the sampling bottle.

[0012] Preferably, the fixing component includes a fixing plate and a guide plate. A guide post and a traction cable are fixedly connected to the bottom surface of the fixing plate. The bottom end of the traction cable passes through the guide post and the guide plate and is fixedly connected to a chain assembly. An mounting plate is fixedly connected to the bottom surface of the chain assembly. The guide post is slidably connected to the traction cable. A guide groove adapted to the guide post is opened on the top surface of the guide plate. The guide post is slidably connected to the guide groove. The bottom surface of the guide plate is fixedly connected to the chain assembly.

[0013] Preferably, the chain assembly includes a first chain and a second chain, the first chain and the second chain having identical structures. The top and bottom surfaces of the first chain are fixedly connected to the bottom surface of the guide plate and the top surface of the mounting plate, respectively. The top and bottom surfaces of the second chain are slidably connected to the bottom surface of the guide plate and the top surface of the mounting plate, respectively. The sides of the first chain and the sides of the second chain are hinged to each other. Adjustment components are fixedly connected to the sides of the first chain and the second chain that are close to each other.

[0014] Preferably, the adjustment assembly includes traction chains fixedly connected to the adjacent sides of the first chain and the second chain, the traction chains being fixedly connected to the traction cable, and an arc-shaped limiting plate being provided between the adjacent sides of the first chain and the second chain, one end of the limiting plate being fixedly connected to the first chain, and the other end of the limiting plate being disposed in abutment against the second chain.

[0015] Preferably, the flow indicator is used to guide the direction of water flow, and it includes a support rod. The bottom surface of the support rod is fixedly connected to the top surface of the shell cover. A guide arrow is fixedly connected to one end of the support rod, and a water guide plate is fixedly connected to the other end of the support rod.

[0016] The present invention has the following technical effects:

[0017] This invention enables convenient installation of the suspended shell on the seabed using a fixing component that can be bent or vertically fixed. Furthermore, by draining seawater from the suspended shell and utilizing the buoyancy of the suspended shell, the fixing component is vertically fixed, making it easy to maintain the suspension height of the suspended shell.

[0018] This invention utilizes a driving component within a suspended shell to drive a sampling component through the opening and closing of a T-shaped ring and a water inlet, thereby enabling the collection of water samples from the current ocean current. Furthermore, a sealing component is used to seal the sampling bottle, preventing sample leakage when the bottle is removed later. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a side view of the shell cover structure.

[0022] Figure 3 This is a side view of the sampling assembly, housing, and sealing assembly.

[0023] Figure 4 This is a side view diagram of the drive component structure;

[0024] Figure 5 This is a schematic diagram of the side view of the shell structure;

[0025] Figure 6 This is a side view of the fixed component structure.

[0026] Figure 7 This is a side view of the bottle stopper structure.

[0027] The components are as follows: 1. Support rod; 2. Guide arrow; 3. Water guide plate; 4. Housing; 5. Housing cover; 6. Pressure platform; 7. Rubber pad; 8. Air inlet; 9. First one-way valve; 10. T-groove; 11. T-ring; 12. Plug hole; 13. Water inlet hole; 14. Through hole; 15. Sampling bottle; 16. Rubber ring; 17. Drive motor; 18. Bottle clamp; 19. Pressure wheel ring; 20. Connecting block; 21. Collar; 22. Sealing cylinder; 23. Bottle stopper; 24. Spring; 25. Second one-way valve; 26. Fixing plate; 27. Guide plate; 28. Guide column; 29. ​​Traction rope; 30. Mounting plate; 31. First chain; 32. Second chain; 33. Traction chain; 34. Limiting plate; 35. Fixing rod; 36. Rubber ring. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Depend on Figure 1-7 The illustrated nearshore coastal zone monitoring and sampling device includes: a fixed assembly, a suspended shell, and a current indicator; the suspended shell includes a shell 4 and a shell cover 5, the shell 4 being fixedly connected to the shell cover 5 by several bolts, the current indicator being fixedly installed on the top surface of the shell cover 5, a fixing rod 35 for external attachment being rotatably connected to the center of the top surface of the shell cover 5, the center of the bottom surface of the shell 4 being rotatably connected to the fixed assembly, an annular T-shaped groove 10 being formed on the inner wall of the shell 4, a T-shaped ring 11 being slidably connected within the T-shaped groove 10, several through holes 14 being equally spaced on the side wall of the T-shaped ring 11, and plug holes 12 and water inlets 13 being formed on the side of the shell 4, the plug holes 12 and water inlets 13 being symmetrically arranged about the central axis of the shell 4. Furthermore, the sealing component is positioned in the direction of the guide arrow 2 of the flow indicator, and the line connecting the center of the plug hole 12 and the center of the water inlet hole 13 is parallel to the support rod 1. This allows the guide arrow 2 to rotate the suspended shell when the ocean current impacts the flow indicator, causing the water inlet hole 13 to face the direction of the water flow, facilitating sampling. The through hole 14 is adapted to the water inlet hole 13, and the sealing component is fixedly connected to the outer side of the shell 4. The sealing component is connected to the plug hole 12, and a sampling component is adapted inside the through hole 14. The sampling component is detachably connected to a driving component, which is fixedly connected to the bottom surface of the inner cavity of the shell 4. The shell 4 is fixedly connected to and connected to a first one-way valve 9, and the shell cover 5 is fixedly connected to and connected to an air inlet 8.

[0031] Furthermore, the T-groove 10 is adapted to and slidably connected to the T-ring 11. At the same time, the distance between two adjacent through holes 14 is greater than the diameter of the water inlet hole 13, so that when the T-ring 11 rotates to the position between two adjacent through holes 14 and coincides with the water inlet hole 13, it can block the intrusion of seawater.

[0032] Furthermore, the present invention can be used in series with multiple sets, which facilitates step-by-step sampling of coastlines at different depths, that is, the mounting plate 30 of another set of sampling devices is fixedly connected to the top surface of the fixing rod 35 of the adjacent set of sampling devices.

[0033] The sampling component is further optimized by including a sampling bottle 15 and a rubber ring 16. The rubber ring 16 is fixedly installed at the mouth of the sampling bottle 15. The outer side of the rubber ring 16 is adapted to the through hole 14. The side of the sampling bottle 15 is detachably connected to the drive component. The rubber ring 16 can assist the T-shaped ring 11 in achieving a seal between the T-shaped ring 11 and the side wall of the housing 4. In order to improve the sealing effect, the side of the rubber ring 16 near the housing 4 is provided with an annular groove. The annular groove is filled with a sealing rubber ring 36. The rubber ring 36 is slidably connected to the inner wall of the T-shaped groove 10. The drive assembly includes a drive motor 17, several bottle clamps 18, and a pressure ring 19. The bottle clamps 18 are fixedly connected to the inner wall of the pressure ring 19 via a connecting block 20. The top surface of the pressure ring 19 slides in contact with the bottom surface of the cover 5. The bottle clamps 18 are detachably connected to the sampling bottles 15. A collar 21 is fixedly connected to the end of the connecting block 20 away from the pressure ring 19. The collar 21 is detachably connected to the output shaft of the drive motor 17 via a side set screw (not shown in the attached figure) that passes through the collar 21, facilitating quick disassembly of the collar 21. A pressure platform 6 is fixedly connected to the bottom surface of the cover 5. The side of the pressure platform 6 is adapted to the top of the inner wall of the housing 4. The bottom surface of the pressure platform 6 slides in contact with the top surface of the pressure ring 19. A sealing gasket 7 is provided between the bottom surface of the cover 5 and the top surface of the housing 4. An inflation nozzle 8 passes through the pressure platform 6 and communicates with the inner cavity of the housing 4.

[0034] Furthermore, in order to distinguish the sampling bottles 15 from different time periods, a waterproof QR code sticker is affixed to the side of the sampling bottle 15.

[0035] Furthermore, the bottle clamp 18 is used to fix the sampling bottle 15, which can not only ensure that the sampling bottle 15 fits tightly with the side wall of the T-shaped groove 10, but also facilitate the manual removal of the sampling bottle 15 later for easy maintenance. The bottle clamp 18 is existing technology and will not be described in detail here.

[0036] The solution is further optimized. The sealing assembly includes a sealing cylinder 22, one end of which is closed, and the other end is fixedly connected to the outer side of the housing 4. The open end of the sealing cylinder 22 is adapted to and connected to the plug hole 12. Several bottle stoppers 23 are slidably connected inside the sealing cylinder 22, with adjacent bottle stoppers 23 abutting against each other. A spring 24 is fixedly connected to the inner end face of the sealing cylinder 22, and one end of the spring 24 abuts against the end face of the bottle stopper 23 adjacent to the spring 24. The bottle stopper 23 is hollow and vacuum-sealed. A second one-way valve 25 is fixedly connected to and connected to the end of the bottle stopper 23 near the sampling bottle 15. The second one-way valve 25 enables excess seawater to be drawn into the hollow bottle stopper 23 when it is inserted into the sampling bottle 15, preventing the bottle stopper 23 from being unable to be inserted.

[0037] The design is further optimized. The fixing component includes a fixing plate 26 and a guide plate 27. The top surface of the fixing plate 26 is rotatably connected to the bottom surface of the shell 4. A guide post 28 and a traction cable 29 are fixedly connected to the bottom surface of the fixing plate 26. The bottom end of the traction cable 29 passes through the guide post 28 and the guide plate 27 respectively and is fixedly connected to a chain assembly. An mounting plate 30 is fixedly connected to the bottom surface of the chain assembly. The guide post 28 and the traction cable 29 are slidably connected. The top surface of the guide plate 27 has a guide groove that matches the guide post 28. The guide post 28 is slidably connected to the guide groove. The bottom surface of the guide plate 27 is fixedly connected to the chain assembly. The guide post 28 slides in the guide groove, which lifts the traction cable 29 and ultimately achieves vertical fixation of the chain assembly, maintaining the fixed depth of the suspension shell.

[0038] Further optimization of the scheme: the chain assembly includes a first chain 31 and a second chain 32. The first chain 31 and the second chain 32 have identical structures. The top and bottom surfaces of the first chain 31 are fixedly connected to the bottom surface of the guide plate 27 and the top surface of the mounting plate 30, respectively. The top and bottom surfaces of the second chain 32 are slidably connected to the bottom surface of the guide plate 27 and the top surface of the mounting plate 30, respectively. All the pivots of the first chain 31 and all the pivots of the second chain 32 are fixedly connected to the two ends of the hinge to achieve mutual hinge. Adjustment components are fixedly connected to the sides of the first chain 31 and the second chain 32 that are close to each other.

[0039] Furthermore, the first chain 31 includes several chain links, each chain link including two pivots and several connecting pieces. The two ends of the connecting pieces are rotatably connected to the two pivots respectively. Adjacent chain links are rotatably connected by several connecting pieces. The connecting pieces within the chain link and the connecting pieces between adjacent chain links are arranged in a zipper-like manner, and the adjacent connecting pieces slide in contact, thereby improving the torsional strength of the first chain 31 and the second chain 32.

[0040] The scheme is further optimized by adjusting the components, including traction chains 33 fixedly connected to the sides of the first chain 31 and the second chain 32 that are close to each other. The traction chains 33 are fixedly connected to the traction cable 29. An arc-shaped limiting plate 34 is provided between the sides of the first chain 31 and the second chain 32 that are close to each other. One end of the limiting plate 34 is fixedly connected to the first chain 31, and the other end of the limiting plate 34 is set to abut against the second chain 32. The limiting plate 34 can make the first chain 31 and the second chain 32 set at a fixed angle, so that the chain assembly can be bent or fixed vertically.

[0041] Furthermore, both the traction chain 33 and the traction cable 29 are steel cables, which are easy to bend and resistant to torsion. This is existing technology and will not be described in detail here.

[0042] The scheme is further optimized. The flow indicator is used to guide the direction of water flow. It includes a support rod 1. The bottom surface of the support rod 1 is fixedly connected to the top surface of the shell cover 5. A guide arrow 2 is fixedly connected to one end of the support rod 1, and a water guide plate 3 is fixedly connected to the other end of the support rod 1.

[0043] The working process of this embodiment is as follows:

[0044] When it is necessary to monitor and sample the water quality of the nearshore coast, the sampling device is fixedly installed on the seabed, thus achieving a fixed connection between the installation plate 30 and the seabed. At this time, the suspended shell is filled with water, which facilitates the sampling device to submerge into the seabed. After the fixing components are installed, the shell cover 5 is fixedly connected to the shell 4. The external air pump is connected to the air inlet 8, so that the seawater in the shell 4 is discharged from the first one-way valve 9. As the seawater is discharged, the suspended shell rises continuously due to buoyancy. The rising of the suspended shell pulls the traction cable 29, which pulls the traction chain 33. The two traction chains 33 pull the second chain 32 closer to the first chain 31, eventually abutting against one end of the limiting plate 34. At this time, the suspended shell provides sufficient tension to the traction cable 29 due to the continuous inflation and desorption of the air inlet 8, ensuring the stability of the angle between the second chain 32 and the first chain 31, and also achieving the vertical placement of the chain assembly, stabilizing the depth of the suspended shell. The angle between the second chain 32 and the first chain 31 is preferably 90°.

[0045] At this time, when an ocean current flows through the seawater, the current impacts the compass, causing the floating shell to rotate and the guide arrow to deflect in the direction of the ocean current. At this time, the drive motor 17 is started, driving the collar 21 and pressure roller ring 19 to rotate, which in turn drives the connecting block and bottle clamp 18 to rotate, and finally drives the sampling bottle 15, rubber ring 16, and T-ring 11 to rotate until an empty sampling bottle 15 is aligned with the water inlet 13. The ocean current carries seawater into the sampling bottle 15. After the current sampling bottle 15 is sampled, the drive motor 17 rotates again to switch to the next empty sampling bottle 15 until the sample requirements are met. When the sampling bottle 15 rotates to the position of the plug hole 12, the bottle plug 23 will be inserted into the sampling bottle 15 due to the elastic force of the spring 24. Since the sampling bottle 15 is already filled with seawater, in order to facilitate the insertion of the bottle plug 23, when the bottle plug 23 enters the sampling bottle 15, the excess seawater will enter the hollow space of the bottle plug 23 through the second one-way valve 25, realizing the pre-tightening of the bottle plug 23.

[0046] When seawater is not required, the drive motor 17 will align the water inlet 13 with the position between two adjacent through holes 14 on the T-ring 11 to prevent seawater from pre-entering the sampling bottle 15 and causing sample distortion.

[0047] To monitor ocean currents at different depths, several sets of sampling devices can be stacked together to monitor the water quality of ocean currents at different depths or ocean currents at different depths and with different directions. Specifically, the mounting plate 30 of one set of sampling devices is fixedly connected to the top surface of the fixing rod 35 of another set of sampling devices, and they are stacked and fixed in sequence as needed.

[0048] Once all the sampling bottles 15 are full, open the cover 5, remove the collar 21, connecting block 20, pressure roller ring 19 and bottle clamp 18, and finally remove the sampling bottles 15 and rubber ring 16 together. Then put in empty sampling bottles 15 and rubber ring 16 to complete the maintenance of the sampling device.

[0049] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0050] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A nearshore coastal zone monitoring and sampling device, characterized in that, include: The system comprises a fixed assembly, a floating shell, and a current indicator. The fixed assembly enables the floating shell to be installed on the seabed. The floating shell includes a shell (4) and a shell cover (5). The shell (4) is fixedly connected to the shell cover (5) by several bolts. The current indicator is fixedly installed on the top surface of the shell cover (5). A fixing rod (35) for external attachment is rotatably connected to the center of the top surface of the shell cover (5). The center of the bottom surface of the shell (4) is rotatably connected to the fixed assembly. An annular T-shaped groove (10) is provided on the inner wall of the shell (4). A T-shaped ring (11) is slidably connected in the T-shaped groove (10). (11) Several through holes (14) are equally spaced on the side wall. The side of the housing (4) is provided with plug holes (12) and water inlet holes (13). The through holes (14) and the water inlet holes (13) are adapted to each other. A sealing component is fixedly connected to the outer side of the housing (4). The sealing component is connected to the plug holes (12). A sampling component is adapted to the through holes (14). The sampling component is detachably connected to a driving component. The driving component is fixedly connected to the bottom surface of the inner cavity of the housing (4). The housing (4) is fixedly connected to and connected to a first one-way valve (9). The housing cover (5) is fixedly connected to and connected to an air inlet (8). The flow indicator is used to guide the direction of water flow. It includes a support rod (1), the bottom surface of which is fixedly connected to the top surface of the shell cover (5). One end of the support rod (1) is fixedly connected to a guide arrow (2), and the other end of the support rod (1) is fixedly connected to a water guide plate (3). The plug hole (12) and the water inlet hole (13) are symmetrically arranged about the central axis of the shell (4), and the sealing assembly is arranged in the direction of the guide arrow (2) of the flow indicator. The line connecting the center of the plug hole (12) and the center of the water inlet hole (13) is parallel to the support rod (1). This enables the guide arrow (2) to drive the suspended shell to rotate when the ocean current on the coast impacts the flow indicator, so that the water inlet hole (13) faces the direction of the water flow, which is convenient for sampling.

2. The nearshore coastal zone monitoring and sampling device according to claim 1, characterized in that: The sampling assembly includes a sampling bottle (15) and a rubber ring (16). The rubber ring (16) is fixedly installed at the mouth of the sampling bottle (15). The outer side of the rubber ring (16) is adapted to the through hole (14). The side of the sampling bottle (15) is detachably connected to the driving assembly.

3. The nearshore coastal zone monitoring and sampling device according to claim 2, characterized in that: The drive assembly includes a drive motor (17), several bottle clamps (18), and a pressure ring (19). The bottle clamps (18) are fixedly connected to the inner wall of the pressure ring (19) via a connecting block (20). The top surface of the pressure ring (19) slides in contact with the bottom surface of the cover (5). The bottle clamps (18) are detachably connected to the sampling bottle (15). A collar (21) is fixedly connected to one end of the connecting block (20) away from the pressure ring (19). The collar (21) is detachably connected to the output shaft of the drive motor (17).

4. The nearshore coastal zone monitoring and sampling device according to claim 3, characterized in that: A pressure plate (6) is fixedly connected to the bottom surface of the cover (5). The side of the pressure plate (6) is adapted to the top of the inner wall of the housing (4). The bottom surface of the pressure plate (6) is in sliding contact with the top surface of the pressure ring (19). A sealing gasket (7) is provided between the bottom surface of the cover (5) and the top surface of the housing (4). The air inlet (8) passes through the pressure plate (6) and communicates with the inner cavity of the housing (4).

5. The nearshore coastal zone monitoring and sampling device according to claim 1, characterized in that: The sealing assembly includes a sealing cylinder (22), one end of which is closed, and the other end of which is fixedly connected to the outer side of the housing (4). One end of the sealing cylinder (22) is adapted to and connected to the plug hole (12). Several bottle stoppers (23) are slidably connected inside the sealing cylinder (22), and adjacent bottle stoppers (23) are arranged to abut against each other. A spring (24) is fixedly connected to the end face of the inner cavity of the sealing cylinder (22), and one end of the spring (24) abuts against the end face of the bottle stopper (23) near the spring (24).

6. The nearshore coastal zone monitoring and sampling device according to claim 5, characterized in that: The bottle stopper (23) is hollow and vacuum-sealed, and a second one-way valve (25) is fixed to and connected to one end of the bottle stopper (23) near the sampling bottle (15).

7. The nearshore coastal zone monitoring and sampling device according to claim 1, characterized in that: The fixing component includes a fixing plate (26) and a guide plate (27). The bottom surface of the fixing plate (26) is fixedly connected to a guide post (28) and a traction cable (29). The bottom end of the traction cable (29) passes through the guide post (28) and the guide plate (27) and is fixedly connected to a chain assembly. The bottom surface of the chain assembly is fixedly connected to an mounting plate (30). The guide post (28) is slidably connected to the traction cable (29). The top surface of the guide plate (27) is provided with a guide groove that matches the guide post (28). The guide post (28) is slidably connected to the guide groove. The bottom surface of the guide plate (27) is fixedly connected to the chain assembly.

8. The nearshore coastal zone monitoring and sampling device according to claim 7, characterized in that: The chain assembly includes a first chain (31) and a second chain (32). The first chain (31) and the second chain (32) have the same structure. The top and bottom surfaces of the first chain (31) are fixedly connected to the bottom surface of the guide plate (27) and the top surface of the mounting plate (30), respectively. The top and bottom surfaces of the second chain (32) are slidably connected to the bottom surface of the guide plate (27) and the top surface of the mounting plate (30), respectively. The side surfaces of the first chain (31) and the second chain (32) are hinged to each other. Adjustment components are fixedly connected to the sides of the first chain (31) and the second chain (32) that are close to each other.

9. The nearshore coastal zone monitoring and sampling device according to claim 8, characterized in that: The adjustment assembly includes a traction chain (33) fixedly connected to the sides of the first chain (31) and the second chain (32) that are close to each other. The traction chain (33) is fixedly connected to the traction cable (29). An arc-shaped limiting plate (34) is provided between the sides of the first chain (31) and the second chain (32) that are close to each other. One end of the limiting plate (34) is fixedly connected to the first chain (31), and the other end of the limiting plate (34) is abutted against the second chain (32).

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