An automatic water quality sampling device of marine buoy type

Abstract

The application discloses a kind of marine buoy type water quality automatic sampling device, including marine buoy, installation component, sampling component, collection component and power component, installation component is detachably installed in marine buoy, sampling component, collection component and power component are all installed on installation component, sampling component is used to store seawater, the invention realizes the demand of long-term water quality sampling on sea, the adaptability of flexible installation structure is strong, can closely adhere to the surface of buoy, timing negative pressure sampling mechanism is accurately controllable, can be automatically collected water sample according to preset timing, impurity is filtered during sampling process, one-way import design, ensure that water sample is pure and pollution-free, sealed storage structure can prevent leakage, guarantee sample integrity, overall device structure is simple, convenient to operate, greatly reduce labor cost and operation risk, significantly improve the efficiency and accuracy of marine water quality sampling, provide strong guarantee for ecological protection and environmental early warning.

Description

Technical Field

[0001] This invention relates to the field of water quality sampling technology, specifically to an automatic water quality sampling device for marine buoys. Background Technology

[0002] Marine water quality monitoring is a core component of ecological environmental protection, marine resource development, and environmental risk early warning. Its key requirement is to achieve long-term, continuous, and accurate water sampling to provide reliable samples for water quality index analysis. Traditional marine water quality sampling mainly relies on manual on-site collection by boat or manual operation at fixed stations. This sampling method is inefficient and limited by weather, sea conditions, and geographical conditions, making it difficult to achieve high-frequency, long-term continuous sampling and unable to capture dynamic changes in water quality.

[0003] Therefore, there is an urgent need for an automatic marine buoy-type water quality sampling device with precise timed sampling function to optimize sampling efficiency and sample quality, and to meet the actual needs of long-term marine environmental monitoring. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic water quality sampling device for marine buoys that can meet the needs of long-term water quality sampling at sea, and has a simple structure and is easy to use, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An automatic water quality sampling device based on a marine buoy includes a marine buoy, an installation assembly, a sampling assembly, a collection assembly, and a power assembly; wherein, The mounting components can be detachably mounted on the ocean float; The sampling component, collection component, and power component are all mounted on the mounting component; The sampling unit is used to store seawater; The collection component and the sampling component work together to form a negative pressure chamber, and the negative pressure draws seawater into the sampling component. The power unit is used to periodically start the sampling unit, separating the collection unit from the sampling unit, thereby creating negative pressure to achieve automatic seawater sampling.

[0006] By adopting the above technical solutions, ocean buoys can provide stable buoyancy and continuous endurance, thereby enabling continuous seawater sampling.

[0007] As a further embodiment of the present invention: the marine float includes a hollow floating tank, a center-of-gravity adjustment column, a support frame, a support platform, a photovoltaic panel, wires, a fixed wire ring, and an insulating restraint plate. The support frame is fixedly mounted on the upper surface of the hollow floating tank, and a support platform is fixedly mounted on the end of the support frame away from the hollow floating tank. The photovoltaic panel is fixedly mounted on the upper surface of the support platform. The two ends of the wires are fixedly connected to the support platform and the hollow floating tank, respectively. A fixed wire ring is fixedly sleeved on the hollow floating tank, and an insulating restraint plate is fixedly mounted on the outer surface of the fixed wire ring. The center-of-gravity adjustment column is fixedly mounted on the lower surface of the hollow floating tank.

[0008] By adopting the above technical solution, the insulating mounting plate and the conductive connecting piece are set separately, which not only ensures the safety of power transmission, but also avoids the risk of leakage caused by seawater contacting conductive parts. The detachable structure facilitates later maintenance and component replacement.

[0009] As a further embodiment of the present invention: the mounting assembly includes a flexible mounting block, an insulating mounting plate, a conductive connecting piece, and a fan-shaped folding block. The flexible mounting block is fixedly provided with fan-shaped folding blocks at equal intervals. The flexible mounting block is fixedly provided with insulating mounting plates at both ends. The insulating mounting plate is fixedly provided with conductive connecting pieces on its side.

[0010] By adopting the above technical solution, the combination design of flexible mounting block and fan-shaped folding block can adapt to the curved surface of marine floats and achieve close-fitting installation.

[0011] As a further embodiment of the present invention: the sampling assembly includes a sampling collection tank, an exhaust port, a support constraint plate, a rotating sleeve, a rotating wheel, a pressure balance hole, a guide connection hole, a filter shell, and a one-way liquid inlet. The one-way liquid inlet is fixedly provided on the lower surface of the sampling collection tank, and a filter shell is fixedly provided on one end of the sampling collection tank near the one-way liquid inlet. The one-way liquid inlet is sleeved inside the filter shell, and an exhaust port is fixedly provided on the side of the sampling collection tank near the one-way liquid inlet.

[0012] By adopting the above technical solutions, the filter shell can filter out impurities such as plankton and silt in seawater before sampling, ensuring that the water sample is pure and unpolluted. The one-way liquid inlet device enables the one-way introduction of seawater, preventing the water sample from flowing back or external pollutants from entering after sampling.

[0013] As a further embodiment of the present invention: a rotating sleeve is movably provided on the upper surface of the sampling collection tank, a rotating wheel is fixedly provided on the upper surface of the rotating sleeve, an air pressure balance hole and a guide connection hole are provided on the upper surface of the sampling collection tank, a support constraint plate is fixedly provided on the side of the sampling collection tank away from the one-way liquid inlet, and the sampling collection tank is fixedly inserted into the flexible mounting block.

[0014] By adopting the above technical solution, the exhaust port facilitates the removal of air from the cavity during sampling, ensuring the smooth storage of water samples and improving sampling efficiency and sample quality.

[0015] As a further embodiment of the present invention: the collection assembly includes a collection protective shell, a collection connecting post, a fixing stud, a guide limiting rod, a sealing sampling block, and a reset spring. The collection connecting post and the fixing stud are fixedly provided on the inner side of the collection protective shell. The collection connecting post is fixedly installed on the axis of the collection protective shell. The fixing stud is fixedly installed on the collection connecting post. The sealing sampling block is fixedly provided at the end of the collection connecting post and the guide limiting rod away from the collection protective shell.

[0016] By adopting the above technical solution, the cooperation between the rotating sleeve and the rotating wheel provides a power transmission basis for the movement of the collection component, and the air pressure balance hole can balance the air pressure inside and outside the sampling collection tank, avoiding the air pressure difference from hindering the movement of the sealed sampling block.

[0017] As a further aspect of the present invention: the sealing sampling block is movably installed inside the sampling collection tank, and the outer wall of the sealing sampling block and the inner wall of the sampling collection tank are in contact with each other, thus forming a storage cavity between the sealing sampling block and the one-way liquid inlet. The reset spring is movably installed inside the storage cavity, and the two ends of the reset spring abut against the sealing sampling block and the one-way liquid inlet, respectively.

[0018] By adopting the above technical solution, the guide connection hole provides precise guidance for the guide limit rod, ensuring smooth movement of the sealed sampling block, and the support constraint plate enhances the installation stability of the sampling collection tank, preventing structural loosening caused by sea turbulence.

[0019] As a further embodiment of the present invention: the collection protective shell is sleeved on the outside of the sampling collection tank, the fixing stud engages with the inner wall of the rotating sleeve through the outer thread, and the guide limiting rod is movably inserted into the inner side of the guide connecting hole, thereby enabling the sealing sampling block and the collection protective shell to move synchronously.

[0020] By adopting the above technical solution, the coaxial design of the collection connecting column and the fixing stud ensures that the sealed sampling block is subjected to uniform force and fits tightly against the inner wall of the sampling collection tank to form a sealed storage cavity.

[0021] As a further aspect of the present invention: the power assembly includes a long rod motor, a power wheel and a transmission belt, the long rod motor is fixedly mounted on the flexible mounting block, and the end of the long rod motor away from the flexible mounting block is movably inserted into the inner side of the support constraint plate.

[0022] By adopting the above technical solution, the long rod motor is fixedly installed on the flexible mounting block and inserted into the inside of the support constraint plate, ensuring the structural stability during operation and avoiding the vibration caused by sea turbulence.

[0023] As a further embodiment of the present invention: the power wheel is movably mounted on the support constraint plate, and the lower surface of the power wheel is fixedly connected to the long rod motor. The two ends of the transmission belt are respectively movably sleeved on the power wheel and the rotating wheel. When the long rod motor is started, it drives the rotating wheel to rotate together through the transmission belt.

[0024] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention meets the needs of long-term marine water quality sampling; the flexible installation structure is highly adaptable and can closely fit the buoy surface; the timed negative pressure sampling mechanism is precise and controllable, and can automatically collect water samples according to a preset time sequence; during the sampling process, impurities are filtered out and the unidirectional introduction design ensures that the water sample is pure and uncontaminated; the sealed storage structure can prevent leakage and ensure sample integrity; the overall device has a simple structure and is easy to operate, which greatly reduces labor costs and operational risks, significantly improves the efficiency and accuracy of marine water quality sampling, and provides strong support for ecological protection and environmental early warning.

[0025] Other features and advantages of the present invention will be disclosed in detail in the following detailed description and accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of an overall structure in one embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of an embodiment of the present invention; Figure 3 This is a schematic diagram of the bent state structure of an installation component in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of an installation component in an uninstalled state according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the outer structure of a sampling component in an embodiment of the present invention; Figure 6 This is a partial structural schematic diagram of an embodiment of the present invention; Figure 7 This is a schematic diagram of the inner structure of a sampling component in an embodiment of the present invention; Figure 8 This is a schematic diagram of the inner structure of a collection component in an embodiment of the present invention.

[0027] The attached figures are labeled as follows: 1. Marine float; 11. Hollow floating tank; 12. Center of gravity adjustment column; 13. Support frame; 14. Support platform; 15. Photovoltaic panel; 16. Wire; 17. Fixed wire ring; 18. Insulating constraint plate; 2. Mounting assembly; 21. Flexible mounting block; 22. Insulating mounting plate; 23. Conductive connecting piece; 24. Fan-shaped folding block; 3. Sampling assembly; 31. Sampling collection tank; 32. Exhaust port; 33. Support constraint plate; 34. Rotating sleeve; 35. Rotating wheel; 36. Air pressure balance hole; 37. Guide connection hole; 38. Filter shell; 39. One-way liquid inlet; 4. Collection assembly; 41. Collection protective shell; 42. Collection connecting column; 43. Fixing stud; 44. Guide limit rod; 45. Sealed sampling block; 46. Return spring; 5. Power assembly; 51. Long rod motor; 52. Power wheel; 53. Drive belt. 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] In this embodiment of the invention, a marine buoy-type automatic water quality sampling device is described below. Figure 1-3 As shown, it includes an ocean float 1, an installation component 2, a sampling component 3, a collection component 4, and a power component 5; wherein the installation component 2 is detachably installed on the ocean float 1, and the sampling component 3, the collection component 4, and the power component 5 are all installed on the installation component 2; The sampling component 3 is used to store seawater. The collection component 4 works with the sampling component 3 to form a negative pressure chamber. The negative pressure draws seawater into the sampling component 3. The power component 5 is used to periodically start the sampling component 3, so that the collection component 4 is separated from the sampling component 3, thereby forming a negative pressure to achieve automatic seawater sampling. The ocean float 1 includes a hollow floating tank 11, a center of gravity adjustment column 12, a support frame 13, a support platform 14, a photovoltaic panel 15, a wire 16, a fixed wire ring 17, and an insulating restraint plate 18. The support frame 13 is fixedly mounted on the upper surface of the hollow floating tank 11. The support platform 14 is fixedly mounted on the end of the support frame 13 away from the hollow floating tank 11. The photovoltaic panel 15 is fixedly mounted on the upper surface of the support platform 14. The two ends of the wire 16 are fixedly connected to the support platform 14 and the hollow floating tank 11, respectively. The fixed wire ring 17 is fixedly sleeved on the hollow floating tank 11. The insulating restraint plate 18 is fixedly mounted on the outer surface of the fixed wire ring 17. The center of gravity adjustment column 12 is fixedly mounted on the lower surface of the hollow floating tank 11.

[0030] In practice: The hollow design of the hollow floating tank 11 gives it sufficient buoyancy to float stably on the ocean surface. The center of gravity adjustment column 12 fixed on its lower surface has a built-in counterweight. By adjusting the distribution of the counterweight, the center of gravity of the device is lowered to avoid overturning or tilting due to wind and waves, and to ensure that the lower end of the hollow floating tank 11 is always at a suitable underwater sampling depth. The support platform 14 is fixed above the hollow floating tank 11 by the support frame 13. The photovoltaic panel 15 on its upper surface can fully receive solar energy, convert the light energy into electrical energy, and then transmit it to the interior of the hollow floating tank 11 through the wire 16. An energy storage component is set inside the hollow floating tank 11 to achieve long-term sea endurance. The fixed wire ring 17 fixedly sleeved on the outside of the hollow floating tank 11 is a ring conductive structure. After being precisely attached to the conductive connecting piece 23 of the mounting component 2, it forms a power transmission channel, which stably supplies the stored electrical energy to the long rod motor 51 of the power component 5 without the need for additional wiring.

[0031] In this embodiment, the mounting component 2 includes a flexible mounting block 21, an insulating mounting plate 22, a conductive connecting piece 23, and a fan-shaped folding block 24. The fan-shaped folding blocks 24 are fixedly provided on the flexible mounting block 21 at equal intervals. The insulating mounting plate 22 is fixedly provided at both ends of the flexible mounting block 21. The conductive connecting piece 23 is fixedly provided on the side of the insulating mounting plate 22. The sampling assembly 3 includes a sampling collection tank 31, an exhaust port 32, a support constraint plate 33, a rotating sleeve 34, a rotating wheel 35, a pressure balance hole 36, a guide connection hole 37, a filter shell 38, and a one-way liquid inlet 39. The one-way liquid inlet 39 is fixedly provided on the lower surface of the sampling collection tank 31. The filter shell 38 is fixedly provided on one end of the sampling collection tank 31 near the one-way liquid inlet 39. The one-way liquid inlet 39 is sleeved inside the filter shell 38. The exhaust port 32 is fixedly provided on the side of the sampling collection tank 31 near the one-way liquid inlet 39. A rotating sleeve 34 is movably provided on the upper surface of the sampling collection tank 31. A rotating wheel 35 is fixedly provided on the upper surface of the rotating sleeve 34. An air pressure balance hole 36 and a guide connection hole 37 are opened on the upper surface of the sampling collection tank 31. A support constraint plate 33 is fixedly provided on the side of the sampling collection tank 31 away from the one-way liquid inlet 39. The sampling collection tank 31 is fixedly inserted into the flexible mounting block 21. The collection assembly 4 includes a collection protective shell 41, a collection connecting post 42, a fixing stud 43, a guide limiting rod 44, a sealing sampling block 45, and a reset spring 46. The collection connecting post 42 and the fixing stud 43 are fixedly provided on the inner side of the collection protective shell 41. The collection connecting post 42 is fixedly installed on the axis of the collection protective shell 41. The fixing stud 43 is fixedly installed on the collection connecting post 42. The sealing sampling block 45 is fixedly provided at the end of the collection connecting post 42 and the guide limiting rod 44 away from the collection protective shell 41. The sealing sampling block 45 is movably installed inside the sampling collection tank 31, and the outer wall of the sealing sampling block 45 and the inner wall of the sampling collection tank 31 are in contact with each other, thus forming a storage cavity between the sealing sampling block 45 and the one-way liquid inlet 39. The reset spring 46 is movably installed inside the storage cavity, and the two ends of the reset spring 46 abut against the sealing sampling block 45 and the one-way liquid inlet 39 respectively.

[0032] In specific implementation: the flexible mounting block 21 is made of bendable elastic insulating material, and the fan-shaped folding block 24 can adaptively unfold or fold with the arc-shaped outer wall of the hollow floating tank 11, so that the flexible mounting block 21 can surround and fit the hollow floating tank 11. After the insulating mounting plates 22 at both ends of the flexible mounting block 21 are aligned with the insulating constraint plates 18, they are fastened by bolts. The axial preload of the bolts makes the flexible mounting block 21 fit tightly with the outer wall of the hollow floating tank 11. The tight fit between the flexible mounting block 21 and the hollow floating tank 11 forms a seal, preventing seawater from seeping into the device. The conductive connecting piece 23 is only conductive on the contact surface with the fixed wire ring 17, while the rest of the parts are wrapped with insulating material, which completely blocks the contact path between seawater and conductive components, thus completely avoiding the risk of leakage in high salt spray and high humidity environments. After the device is assembled, manually push the collection protective shell 41 towards the sampling collection tank 31, which will drive the collection connecting column 42, the fixing stud 43 and the sealing sampling block 45 to move synchronously. The outer wall of the sealing sampling block 45 is tightly attached to the inner wall of the sampling collection tank 31. During its movement, it compresses the reset spring 46 in the storage cavity, causing the reset spring 46 to accumulate elastic potential energy. When the fixing stud 43 is fully screwed into the rotating sleeve 34, the sealing sampling block 45 reaches the limit position close to the one-way liquid inlet 39, and the volume of the storage cavity shrinks to the minimum. At this time, the exhaust port 32 is in a manually sealed state, and the device enters the sampling ready state.

[0033] In this embodiment, the protective shell 41 is sleeved on the outside of the sampling collection tank 31, the fixing stud 43 engages with the inner wall of the rotating sleeve 34 through the outer thread, and the guide limit rod 44 is movably inserted into the inner side of the guide connection hole 37, so that the sealing sampling block 45 and the protective shell 41 move synchronously. The power assembly 5 includes a long rod motor 51, a power wheel 52 and a transmission belt 53. The long rod motor 51 is fixedly mounted on the flexible mounting block 21, and the end of the long rod motor 51 away from the flexible mounting block 21 is movably inserted into the inner side of the support constraint plate 33. The drive wheel 52 is movably mounted on the support constraint plate 33, and the lower surface of the drive wheel 52 is fixedly connected to the long rod motor 51. The two ends of the transmission belt 53 are movably sleeved on the drive wheel 52 and the rotating wheel 35, respectively. When the long rod motor 51 is started, it drives the rotating wheel 35 to rotate together through the transmission belt 53.

[0034] In specific implementation: During use, the device control system presets the start sequence of the long rod motor 51. The energy storage module continuously supplies power to the long rod motor 51 through the fixed wire ring 17 and the conductive connecting piece 23. After the preset sampling time is reached, the control system sends a start signal, and the corresponding long rod motor 51 is powered on and runs. The output end of the long rod motor 51 is fixedly inserted into the inner side of the support constraint plate 33 to ensure the structural stability during operation. The power wheel 52 is rigidly connected to the output end of the long rod motor 51 and rotates synchronously with the motor shaft to transmit power to the rotating wheel 35. Since the external thread on the outside of the fixed stud 43 meshes with the internal thread on the inner wall of the rotating sleeve 34, the rotation of the rotating sleeve 34 causes the fixed stud 43 to gradually disengage from the constraint of the rotating sleeve 34 along the axial direction, completing the mechanical unlocking before sampling. After the power component 5 is unlocked, the elastic potential energy of the reset spring 46 is released, generating an axial thrust to push the sealed sampling block 45 away from the one-way liquid inlet 39. Due to the sealed contact between the sealed sampling block 45 and the inner wall of the sampling collection tank 31, its movement causes the storage cavity volume to increase rapidly and the internal air pressure to drop sharply, forming a pressure difference with the outside seawater. Under the action of the pressure difference, the seawater first passes through the filter shell 38 to filter out impurities such as plankton and silt, and then enters the storage cavity through the one-way liquid inlet 39. During this process, the air pressure balance hole 36 on the upper surface of the sampling collection tank 31 can balance the air pressure outside the device and the upper space of the sampling collection tank 31, avoiding the obstruction of the movement of the sealed sampling block 45 due to the low air pressure in the upper space, and ensuring a smooth sampling process. After sampling, the sealed sampling block 45 reaches its limit position under the pushing force of the return spring 46, and the storage cavity remains full of liquid. The exhaust port 32 remains sealed, which, together with the sealing effect of the sealed sampling block 45, achieves sealed storage of the water sample to prevent leakage or contamination. When the predetermined time is reached, the next long rod motor 51 is started to repeat the above operation, waiting for the workers to collect the sample periodically. When the workers have completed the collection and need to take out the water sample for testing, they press down on the collection protective shell 41, which moves the sealed sampling block 45 towards the one-way liquid inlet 39. At the same time, the exhaust port 32 is opened, so that the water sample in the storage cavity flows out through the exhaust port 32 under the action of gravity and the pushing force of the sealed sampling block 45, thus completing the water sample collection.

[0035] This invention provides an automatic marine buoy-type water quality sampling device that can significantly reduce labor costs and operational risks, and significantly improve the efficiency and accuracy of marine water quality sampling, providing strong support for ecological protection and environmental early warning.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A marine buoy-type automatic water quality sampling device, characterized in that, It includes an ocean float (1), an installation assembly (2), a sampling assembly (3), a collection assembly (4), and a power assembly (5); among which, The mounting component (2) is detachably mounted on the ocean float (1); The sampling component (3), the collection component (4), and the power component (5) are all mounted on the mounting component (2); The sampling component (3) is used to store seawater; The collection component (4) and the sampling component (3) work together to form a negative pressure chamber, and seawater is drawn into the sampling component (3) by negative pressure. The power unit (5) is used to periodically start the sampling unit (3), so that the collection unit (4) is separated from the sampling unit (3), thereby creating negative pressure to achieve automatic seawater sampling.

2. The marine buoy-type automatic water quality sampling device according to claim 1, characterized in that, The ocean float (1) includes a hollow floating tank (11), a center of gravity adjustment column (12), a support frame (13), a support platform (14), a photovoltaic panel (15), an electric wire (16), a fixed conductor ring (17), and an insulating restraint plate (18). The support frame (13) is fixedly provided on the upper surface of the hollow floating tank (11). The support platform (14) is fixedly provided at one end of the support frame (13) away from the hollow floating tank (11). The photovoltaic panel (15) is fixedly provided on the upper surface of the support platform (14). The two ends of the electric wire (16) are fixedly connected to the support platform (14) and the hollow floating tank (11) respectively. The fixed conductor ring (17) is fixedly sleeved on the hollow floating tank (11). The insulating restraint plate (18) is fixedly provided on the outer surface of the fixed conductor ring (17). The center of gravity adjustment column (12) is fixedly provided on the lower surface of the hollow floating tank (11).

3. The marine buoy-type automatic water quality sampling device according to claim 2, characterized in that, The mounting assembly (2) includes a flexible mounting block (21), an insulating mounting plate (22), a conductive connecting piece (23), and a fan-shaped folding block (24). The flexible mounting block (21) is fixedly provided with fan-shaped folding blocks (24) at equal intervals. The flexible mounting block (21) is fixedly provided with an insulating mounting plate (22) at both ends. The insulating mounting plate (22) is fixedly provided with a conductive connecting piece (23) on its side.

4. The marine buoy-type automatic water quality sampling device according to claim 3, characterized in that, The sampling assembly (3) includes a sampling collection tank (31), an exhaust port (32), a support constraint plate (33), a rotating sleeve (34), a rotating wheel (35), a pressure balance hole (36), a guide connection hole (37), a filter shell (38), and a one-way liquid inlet (39). The one-way liquid inlet (39) is fixedly provided on the lower surface of the sampling collection tank (31). The filter shell (38) is fixedly provided on one end of the sampling collection tank (31) near the one-way liquid inlet (39). The one-way liquid inlet (39) is sleeved inside the filter shell (38). The exhaust port (32) is fixedly provided on the side of the sampling collection tank (31) near the one-way liquid inlet (39).

5. The marine buoy-type automatic water quality sampling device according to claim 4, characterized in that, The upper surface of the sampling collection tank (31) is provided with a rotating sleeve (34), and the upper surface of the rotating sleeve (34) is provided with a rotating wheel (35). The upper surface of the sampling collection tank (31) is provided with a pressure balance hole (36) and a guide connection hole (37). The side of the sampling collection tank (31) away from the one-way liquid inlet (39) is provided with a support constraint plate (33). The sampling collection tank (31) is fixedly inserted into the flexible mounting block (21).

6. The marine buoy-type automatic water quality sampling device according to claim 5, characterized in that, The collection assembly (4) includes a collection protective shell (41), a collection connecting post (42), a fixing stud (43), a guide limiting rod (44), a sealing sampling block (45), and a reset spring (46). The collection protective shell (41) is fixedly provided with the collection connecting post (42) and the fixing stud (43) on its inner side. The collection connecting post (42) is fixedly installed on the axis of the collection protective shell (41), and the fixing stud (43) is fixedly installed on the collection connecting post (42). The sealing sampling block (45) is fixedly provided at the end of the collection connecting post (42) and the guide limiting rod (44) away from the collection protective shell (41).

7. The marine buoy-type automatic water quality sampling device according to claim 6, characterized in that, The sealed sampling block (45) is movably installed inside the sampling collection tank (31), and the outer wall of the sealed sampling block (45) and the inner wall of the sampling collection tank (31) are in contact with each other, thus forming a storage cavity between the sealed sampling block (45) and the one-way liquid inlet (39). The reset spring (46) is movably installed inside the storage cavity, and the two ends of the reset spring (46) abut against the sealed sampling block (45) and the one-way liquid inlet (39) respectively.

8. The marine buoy-type automatic water quality sampling device according to claim 7, characterized in that, The collection protective shell (41) is sleeved on the outside of the sampling collection tank (31). The fixing stud (43) meshes with the inner wall of the rotating sleeve (34) through the outer thread. The guide limit rod (44) is movably inserted into the inner side of the guide connection hole (37), so that the sealing sampling block (45) and the collection protective shell (41) move synchronously.

9. The marine buoy-type automatic water quality sampling device according to claim 8, characterized in that, The power assembly (5) includes a long rod motor (51), a power wheel (52) and a transmission belt (53). The long rod motor (51) is fixedly mounted on the flexible mounting block (21), and one end of the long rod motor (51) away from the flexible mounting block (21) is movably inserted into the inner side of the support constraint plate (33).

10. The marine buoy-type automatic water quality sampling device according to claim 9, characterized in that, The power wheel (52) is movably mounted on the support constraint plate (33), and the lower surface of the power wheel (52) is fixedly connected to the long rod motor (51). The two ends of the transmission belt (53) are movably sleeved on the power wheel (52) and the rotating wheel (35) respectively. When the long rod motor (51) starts, it drives the rotating wheel (35) to rotate together through the transmission belt (53).

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