Aquatic ecological survey device

Abstract

The application is suitable for the field of aquatic ecological investigation sampling technology, and provides an aquatic ecological investigation device, which comprises a shell and further comprises: a carrier disc arranged in a cavity one, a plurality of lateral sampling pipes being circumferentially arranged on the outer side of the carrier disc and being hingedly arranged, a supporting assembly for supporting the lateral sampling pipes being further arranged on the side wall of the shell, the lateral sampling pipes being further communicated with a cavity two through a communication assembly; a sampling assembly installed in the cavity two; an adjusting assembly installed in the cavity one and connected with the carrier disc, the adjusting assembly being used for controlling the position of the carrier disc in the cavity one and controlling the rotation of the carrier disc; a sealing control assembly installed in a cavity three, the sealing control assembly being connected with the carrier disc and being used for sealingly controlling the water inlet along with the movement of the carrier disc. The sampling structure is novel and rich, convenient to apply, and can improve the comprehensiveness and accuracy of subsequent aquatic ecological investigation.

Description

Technical Field

[0001] This invention belongs to the field of water ecological survey and sampling technology, and particularly relates to water ecological survey devices. Background Technology

[0002] Aquatic ecological survey devices are specialized equipment used to monitor and assess the quality of the aquatic ecological environment. These devices typically include five main categories: topographic surveying, hydrological surveying, aquatic environment surveying, soil environment surveying, and aquatic biological surveying.

[0003] In order to protect the aquatic ecosystem, it is necessary to sample and investigate the water in the aquatic ecosystem in order to better protect the aquatic ecological environment. However, the existing sampling devices have a simple and traditional sampling structure, such as only being able to perform single-mode sampling, and are inconvenient to use, which affects the comprehensiveness and accuracy of subsequent aquatic ecological surveys.

[0004] Therefore, in view of the above situation, there is an urgent need to develop aquatic ecological survey devices to overcome the shortcomings in current practical applications. Summary of the Invention

[0005] The purpose of this invention is to provide a water ecological survey device, which aims to solve the problems of existing sampling devices having a single and traditional sampling structure and being inconvenient to use.

[0006] The present invention is implemented as follows: a water ecological survey device includes a shell, with a cavity 1 and a cavity 2 respectively provided on the upper inner side of the shell, and a cavity 3 provided on the lower inner side of the shell. A water inlet is provided at the bottom of cavity 3. The device also includes:

[0007] The carrier disk is located inside the cavity one. Multiple side sampling tubes are hinged to the outer circumferential distribution of the carrier disk. The side sampling tubes extend from the side wall of the shell. The side wall of the shell is also provided with a support assembly for supporting the side sampling tubes. The side sampling tubes are also connected to the cavity two through a communication assembly.

[0008] A sampling assembly is installed inside the second cavity. The sampling assembly is used to perform negative pressure suction on the side sampling tube, thereby drawing water into the second cavity through the side sampling tube.

[0009] An adjustment assembly is also installed inside the cavity, which is connected to the carrier plate. The adjustment assembly is used to control the position of the carrier plate inside the cavity and to control the rotation of the carrier plate.

[0010] A sealing control component is installed inside the cavity three and is also connected to the carrier plate. The sealing control component is used to control the sealing of the water inlet as the carrier plate moves.

[0011] A further technical solution includes an adjustment assembly comprising a telescopic cylinder 1, a telescopic cylinder 2, a transmission rod 2, a linkage rod 2, and a sleeve 2. The transmission rod 2 is fixed to the upper side of the carrier plate, and the upper end of the transmission rod 2 is rotatably connected to the telescopic cylinder 2. The upper end of the telescopic cylinder 2 is fixedly connected to the top of the cavity 1. The sleeve 2 is also sleeved on the transmission rod 2, and the sleeve 2 has a track groove 2, which includes an upper vertical section and a lower arc-shaped section. The linkage rod 2, which cooperates with and connects to the track groove 2, is also fixed on the transmission rod 2. The telescopic cylinder 1 is also fixed to the outer side of the sleeve 2, and the upper end of the telescopic cylinder 1 is fixedly connected to the top of the cavity 1.

[0012] In a further technical solution, the lower end of the telescopic cylinder 2 is connected to the upper end of the transmission rod 2 via a rotating body; the lower end of the telescopic cylinder 1 is fixedly connected to the sleeve 2 via a fixing block.

[0013] A further technical solution includes a sealing control assembly comprising a sealing plate, a transmission rod, a telescopic cylinder, a sleeve, and a linkage rod. The bottom of the cavity three is provided with a sealing plate capable of blocking the inlet. A transmission rod is rotatably mounted in the middle of the bottom of the cavity three, and the transmission rod is also fixedly connected to the sealing plate. A sleeve is fixedly connected to the upper end of the transmission rod, and a track groove is formed on the sleeve, which includes a lower vertical section and an upper arc-shaped section. A telescopic cylinder is rotatably mounted on the lower side of the carrier plate, sliding through the housing between the cavity one and the cavity three. The telescopic spindle of the telescopic cylinder is also slidably connected to the sleeve, and a linkage rod is fixedly mounted on the telescopic spindle of the telescopic cylinder, cooperating with the track groove. When the linkage rod is located in the vertical section of the track groove, the sealing plate blocks the inlet. When the linkage rod is located in the arc-shaped section of the track groove, the sealing plate rotates relative to the inlet, thereby releasing the blockage of the inlet.

[0014] In a further technical solution, the sampling assembly includes a valve, a discharge pipe, a telescopic cylinder three, and a piston. The piston is slidably disposed inside the cavity two, and the telescopic cylinder three is fixed on the upper side of the piston. The upper end of the telescopic cylinder three is fixedly connected to the top of the cavity two. A discharge pipe communicating with the bottom of the cavity two is also installed on the side wall of the housing, and a valve is disposed on the discharge pipe.

[0015] In a further technical solution, the connecting component includes a first hose and a second hose, the carrier plate is a hollow structure, the inner cavity of the carrier plate is connected to the bottom of the second cavity through the first hose, and the side sampling tube is also connected to the inner cavity of the carrier plate through the second hose.

[0016] A further technical solution includes a support assembly comprising a U-shaped rod, a collar, a connecting shaft, a U-shaped seat, and a support shaft. The side wall of the housing has an installation port for the side sampling tube to pass through. A U-shaped rod is fixed to the upper side of the installation port on the side wall of the housing. A collar is rotatably mounted on the U-shaped rod, and a connecting shaft is rotatably mounted on the collar. A U-shaped seat is fixed to the end of the connecting shaft away from the collar, and the U-shaped seat is rotatably connected to the side sampling tube through the support shaft.

[0017] In a further technical solution, the side sampling tube adopts an L-shaped structure, the connection between the support shaft and the side sampling tube is located at the corner of the side sampling tube, and one end of the side sampling tube is hinged to the lower outer ring of the carrier disk.

[0018] In a further technical solution, a one-way valve is also installed at the lower end of the side sampling tube.

[0019] In a further technical solution, one end of the side sampling tube is slidably hinged to the lower outer ring of the carrier disk.

[0020] The aquatic ecological survey device provided in this invention allows for control of the position and rotation of the carrier plate within cavity one via an adjustment component. This, in turn, causes the side sampling tube to change position and rotate, enabling large-scale circumferential dynamic sampling and improving sampling reliability. A support component provides stable support for the side sampling tube. Through the operation of the sampling component, negative pressure suction is applied to the side sampling tube, drawing water into cavity two, completing the large-scale circumferential dynamic sampling process. Furthermore, a sealing control component controls the sealing of the inlet as the carrier plate moves, allowing for flexible opening of the inlet during large-scale circumferential dynamic sampling to allow water to be sampled into cavity three, completing central sampling and improving the comprehensiveness and accuracy of subsequent aquatic ecological surveys. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the water ecological survey device provided in an embodiment of the present invention;

[0022] Figure 2 for Figure 1 A partial sectional view of the structure;

[0023] Figure 3 for Figure 2 A schematic diagram of the structure viewed from below;

[0024] Figure 4 for Figure 1 A magnified structural diagram of part A in the middle;

[0025] Figure 5 for Figure 2 A magnified structural diagram of part B in the middle section;

[0026] Figure 6 for Figure 3 A magnified structural diagram of section C.

[0027] In the diagram: 1-Valve, 2-Discharge pipe, 3-Side sampling pipe, 4-Installation port, 5-Support assembly, 6-Shell, 7-Cavity 1, 8-Cavity 2, 9-Sealing plate, 10-Transmission rod 1, 11-Cavity 3, 12-Telescopic cylinder 1, 13-Fixing block, 14-Telescopic cylinder 2, 15-Rotating body, 16-Transmission rod 2, 17-Linkage rod 2, 18-Sleeve 2, 19-Trajectory groove 2, 20-Telescopic cylinder 3, 21-Piston, 22-Hose 1, 23-Inlet, 24-U-shaped rod, 25-Collar, 26-Connecting shaft, 27-U-shaped seat, 28-Support shaft, 29-Carrier plate, 30-Hose 2, 31-Telescopic cylinder 4, 32-Sleeve 1, 33-Trajectory groove 1, 34-Linkage rod 1. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0030] like Figure 1-3 As shown in Figure 5, a water ecological survey device provided in one embodiment of the present invention includes a housing 6. The upper inner side of the housing 6 is provided with a first cavity 7 and a second cavity 8, and the lower inner side of the housing 6 is provided with a third cavity 11. A water inlet 23 is opened at the bottom of the third cavity 11. The device also includes:

[0031] Carrier 29 is disposed in cavity 7. Multiple side sampling tubes 3 are hinged to the outer circumferential distribution of the carrier 29. The side sampling tubes 3 extend from the side wall of the housing 6. The side wall of the housing 6 is also provided with a support assembly 5 for supporting the side sampling tubes 3. The side sampling tubes 3 are also connected to the cavity 8 through a communication assembly.

[0032] A sampling assembly is installed inside the cavity 2 8. The sampling assembly is used to perform negative pressure suction on the side sampling tube 3, thereby drawing water into the cavity 2 8 through the side sampling tube 3.

[0033] An adjustment assembly is also installed in the cavity 7, which is connected to the carrier 29. The adjustment assembly is used to control the position of the carrier 29 in the cavity 7 and to control the rotation of the carrier 29.

[0034] A sealing control component is installed inside cavity 11 and is also connected to carrier plate 29. The sealing control component is used to control the sealing of inlet 23 as carrier plate 29 moves.

[0035] In this embodiment of the invention, the position of the carrier plate 29 within the cavity 7 can be controlled by the adjustment component, and the rotation of the carrier plate 29 can also be controlled, thereby changing the position and rotating the side sampling tube 3. This allows for large-scale circumferential dynamic sampling, improving the reliability of the sampling. The support component 5 provides stable support for the side sampling tube 3. Through the operation of the sampling component, negative pressure suction can be applied to the side sampling tube 3, thereby drawing water into the cavity 8 and completing the large-scale circumferential dynamic sampling process. Furthermore, the sealing control component can control the sealing of the inlet 23 as the carrier plate 29 moves. This allows for flexible opening of the inlet 23 during large-scale circumferential dynamic sampling to allow water to be sampled into the cavity 11, completing the central sampling work and improving the comprehensiveness and accuracy of subsequent aquatic ecological surveys.

[0036] like Figure 1-3 As shown in Figures 5-6, in a preferred embodiment of the present invention, the adjustment assembly includes a telescopic cylinder 12, a telescopic cylinder 14, a transmission rod 16, a linkage rod 17, and a sleeve 18. The transmission rod 16 is fixed to the upper side of the carrier plate 29. The upper end of the transmission rod 16 is rotatably connected to the telescopic cylinder 14. The upper end of the telescopic cylinder 14 is fixedly connected to the top of the cavity 7. The sleeve 18 is also sleeved on the transmission rod 16. The sleeve 18 has a track groove 19, which includes an upper vertical section and a lower arc section. The linkage rod 17, which is connected to the track groove 19, is also fixed on the transmission rod 16. The telescopic cylinder 12 is also fixed to the outer side of the sleeve 18. The upper end of the telescopic cylinder 12 is fixedly connected to the top of the cavity 7.

[0037] In one embodiment, the lower end of the telescopic cylinder 14 is connected to the upper end of the transmission rod 16 via a rotating body 15, and the transmission rod 16 can rotate relative to the telescopic cylinder 14 by means of the rotating body 15; the lower end of the telescopic cylinder 12 is fixedly connected to the sleeve 18 via a fixing block 13; the arc-shaped structure of the track groove 19 is not limited, and the required shape can be designed, such as driving the side sampling tube 3 to reciprocate, etc., without limitation.

[0038] In application, by defining the shape of the second track groove 19, when the second telescopic cylinder 14 drives the second transmission rod 16 to descend, the carrier plate 29 pushes the lower end of the side sampling tube 3 to move away from the housing 6, but the side sampling tube 3 does not rotate. When the side sampling tube 3 tilts to a certain angle, the second linkage rod 17 engages with the arc-shaped section of the second track groove 19, thereby causing the side sampling tube 3 to rotate. This process improves the reliability of sampling and transmission. In addition, the initial position of the second sleeve 18 can be adjusted by the first telescopic cylinder 12, thereby controlling the engagement of the second linkage rod 17 and the second track groove 19, making it flexible and reliable.

[0039] The sealing control assembly includes a sealing plate 9, a transmission rod 10, a telescopic cylinder 31, a sleeve 32, and a linkage rod 34. The number and shape of the inlets 23 can be set as needed. The bottom of the cavity 31 is provided with a sealing plate 9 that can block the inlets 23. The transmission rod 10 is rotatably installed in the middle of the bottom of the cavity 31. The transmission rod 10 is also fixedly connected to the sealing plate 9. When the transmission rod 10 rotates, it can drive the sealing plate 9 to rotate, thereby controlling whether the sealing plate 9 blocks the inlets 23. The upper end of the transmission rod 10 is fixedly connected to the sleeve 32. The sleeve 32 has a track groove 33, which includes a lower vertical section and an upper arc section. The arc section is designed as needed to allow the sealing plate 9 to open the inlets 23 after rotation. As limited and elaborated: A telescopic cylinder 31 is rotatably mounted on the lower side of the carrier plate 29. The telescopic cylinder 31 slides through the housing 6 between the cavity 1 7 and the cavity 3 11. A protruding ridge (not shown) can be provided on the outside of the telescopic cylinder 31 to limit the rotation of the telescopic cylinder 31 caused by friction by the carrier plate 29, thereby improving reliability. The telescopic spindle of the telescopic cylinder 31 is also slidably connected to the sleeve 32. A linkage rod 34 that cooperates with the track groove 33 is also fixed on the telescopic spindle of the telescopic cylinder 31. When the linkage rod 34 is located in the vertical section of the track groove 33, the sealing plate 9 blocks the water inlet 23. When the linkage rod 34 is located in the arc section of the track groove 33, the sealing plate 9 rotates relative to the water inlet 23, thereby releasing the blocking state of the water inlet 23.

[0040] In application, the position of the linkage rod 34 relative to the track groove 33 is adjusted using the telescopic cylinder 31. For example, if the linkage rod 34 is kept within the vertical section of the track groove 33, the sealing plate 9 will always block the inlet 23 regardless of the movement of the carrier plate 29. It can also be adjusted to adapt to the movement of the carrier plate 29. For instance, when the side sampling tube 3 is tilted to its maximum position, the sealing plate 9 releases its blockage of the inlet 23, achieving simultaneous circumferential and central water intake, thus improving sampling efficiency. Furthermore, when circumferential water intake is not required, the linkage rod 34 can be directly driven by the telescopic cylinder 31 to engage with the arc-shaped section of the track groove 33, allowing the sealing plate 9 to release its blockage of the inlet 23, enabling independent central water intake. This provides diverse, flexible, and reliable applications.

[0041] like Figure 1-3 As shown, in a preferred embodiment of the present invention, the sampling assembly includes a valve 1, a discharge pipe 2, a telescopic cylinder 3 20, and a piston 21. The piston 21 is slidably disposed inside the cavity 2 8. The telescopic cylinder 3 20 is fixed on the upper side of the piston 21. The upper end of the telescopic cylinder 3 20 is fixedly connected to the top of the cavity 2 8. The discharge pipe 2, which communicates with the bottom of the cavity 2 8, is also installed on the side wall of the housing 6. The valve 1 is disposed on the discharge pipe 2.

[0042] In application, the piston 21 is raised by the telescopic cylinder 3 20, which can draw water into the cavity 2 8 under negative pressure. After sampling, the water sampled can be discharged through the discharge pipe 2, which is flexible and convenient.

[0043] like Figure 1-3 As shown in Figure 5, in a preferred embodiment of the present invention, the connecting component includes a first hose 22 and a second hose 30. The carrier plate 29 is a hollow structure, and its specific shape and size are not limited, as long as it can connect and transport water. The inner cavity of the carrier plate 29 is connected to the bottom of the second cavity 8 through the first hose 22. The side sampling tube 3 is also connected to the inner cavity of the carrier plate 29 through the second hose 30, thereby realizing that the side sampling tube 3 transports water into the second cavity 8 in sequence through the second hose 30, the inner cavity of the carrier plate 29 and the first hose 22.

[0044] like Figure 1 and 4 As shown, in a preferred embodiment of the present invention, the support assembly 5 includes a U-shaped rod 24, a collar 25, a connecting shaft 26, a U-shaped seat 27, and a support shaft 28. The side wall of the housing 6 is provided with an installation port 4 for the side sampling tube 3 to pass through. The upper side of the installation port 4 is fixed to the side wall of the housing 6 with a U-shaped rod 24. A collar 25 is rotatably mounted on the U-shaped rod 24. A connecting shaft 26 is rotatably mounted on the collar 25. A U-shaped seat 27 is fixed at the end of the connecting shaft 26 away from the collar 25. The U-shaped seat 27 is rotatably connected to the side sampling tube 3 through the support shaft 28.

[0045] In one embodiment, the side sampling tube 3 adopts an L-shaped structure, and the connection between the support shaft 28 and the side sampling tube 3 is located at the corner of the side sampling tube 3. One end of the side sampling tube 3 is hinged to the lower outer ring of the carrier plate 29. In this way, when the carrier plate 29 descends, it can push the lower end of the side sampling tube 3 to move away from the housing 6, and can quickly control the tilt of the side sampling tube 3; conversely, it can quickly control the side sampling tube 3 on the outside of the housing 6 to adhere to the side wall of the housing 6, so as to achieve reception.

[0046] Preferably, a one-way valve (not shown) is also installed at the lower end of the side sampling tube 3 to prevent reverse flow, thereby ensuring that the sampled water in the cavity 8 will not flow out and improving reliability.

[0047] To avoid interference caused by the descent of the carrier plate 29 leading to the rotation of the side sampling tube 3, which cannot be overcome by the support component 5, one end of the side sampling tube 3 is slidably hinged to the lower outer ring of the carrier plate 29. That is, while being hinged, it can also slide adaptively, improving reliability. The specific structure can be implemented using conventional technology, such as fixing a guide rail on the lower side of the carrier plate 29, and sliding a slider on the guide rail, and hinge connecting one end of the side sampling tube 3 to the slider. No further details are provided.

[0048] In application, the side sampling tube 3 can be matched with the lifting and lowering of the carrier plate 29 by rotating the collar 25 relative to the U-shaped rod 24 and the side sampling tube 3 relative to the U-shaped seat 27; the rotation of the connecting shaft 26 relative to the collar 25 can match the rotation of the carrier plate 29, thereby achieving stable and reliable support for the side sampling tube 3 and good adaptability.

[0049] Furthermore, the structural shape of the shell 6 and the shape of the inner cavity of the shell 6 can be set as needed and are not limited; the telescopic cylinder 12, telescopic cylinder 24, telescopic cylinder 30 and telescopic cylinder 4 are preferably electric telescopic cylinders for easy control; the sealing connection structure between the sealing plate 9 and the water inlet 23 can conventionally be a sealing ring arranged on the lower side of the sealing plate 9 to ensure sealing and prevent leakage after water is taken out.

[0050] The control, model, and circuit connection of each component are not specifically limited and can be flexibly configured in practical applications. All circuits, electronic components, and modules involved are existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. Furthermore, the scope of protection of this invention does not involve improvements to the software and methods.

[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. Aquatic ecological survey device, including a housing; The upper inner side of the shell is provided with cavity one and cavity two, and the lower inner side of the shell is provided with cavity three. A water inlet is provided at the bottom of cavity three. The characteristic of this design is that… Also includes: The carrier disk is located inside the cavity one. Multiple side sampling tubes are hinged to the outer circumferential distribution of the carrier disk. The side sampling tubes extend from the side wall of the shell. The side wall of the shell is also provided with a support assembly for supporting the side sampling tubes. The side sampling tubes are also connected to the cavity two through a communication assembly. A sampling assembly is installed inside the second cavity. The sampling assembly is used to perform negative pressure suction on the side sampling tube, thereby drawing water into the second cavity through the side sampling tube. An adjustment assembly is also installed inside the cavity, which is connected to the carrier plate. The adjustment assembly is used to control the position of the carrier plate inside the cavity and to control the rotation of the carrier plate. A sealing control assembly is installed inside the cavity three and is also connected to the carrier tray. The sealing control assembly is used to control the sealing of the water inlet as the carrier tray moves. The adjustment assembly includes a telescopic cylinder one, a telescopic cylinder two, a transmission rod two, a linkage rod two, and a sleeve two; A transmission rod two is fixed on the upper side of the carrier plate. A telescopic cylinder two is rotatably connected to the upper end of the transmission rod two. The upper end of the telescopic cylinder two is fixedly connected to the top of the cavity one. The transmission rod 2 is also fitted with a sleeve 2, and the sleeve 2 is provided with a track groove 2. The track groove 2 includes an upper vertical section and a lower arc section. The transmission rod 2 is also fixed with a linkage rod 2 that cooperates with and connects to the track groove 2. A telescopic cylinder is also fixed to the outside of the second sleeve, and the upper end of the telescopic cylinder is fixedly connected to the top of the cavity. The sealing control assembly includes a sealing plate, a transmission rod, a telescopic cylinder, a sleeve, and a linkage rod. The bottom of the cavity three is provided with a sealing plate that can block the water inlet; A transmission rod is rotatably installed at the bottom center of the cavity three. The transmission rod is also fixedly connected to the sealing plate. A sleeve is fixedly connected to the upper end of the transmission rod. A track groove is provided on the sleeve. The track groove includes a lower vertical section and an upper arc section. A telescopic cylinder four is rotatably mounted on the lower side of the carrier plate. The telescopic cylinder four slides through the housing between the cavity one and the cavity three. The telescopic spindle of the telescopic cylinder four is also slidably connected to the sleeve one. A linkage rod one that cooperates with the track groove one is also fixed on the telescopic spindle of the telescopic cylinder four. When the linkage rod is located in the vertical section of the track groove, the sealing plate blocks the water inlet; When the linkage rod is located in the arc section of the track groove, the sealing plate rotates relative to the water inlet, thereby releasing the blockage of the water inlet.

2. The water ecological survey device according to claim 1, characterized in that, The lower end of the telescopic cylinder 2 is connected to the upper end of the transmission rod 2 via a rotating body; The lower end of the telescopic cylinder is fixedly connected to the sleeve 2 via a fixing block.

3. The water ecological survey device according to claim 2, characterized in that, The sampling assembly includes a valve, a discharge pipe, a telescopic cylinder, and a piston; A piston is slidably provided inside the cavity two, and a telescopic cylinder three is fixed on the upper side of the piston. The upper end of the telescopic cylinder three is fixedly connected to the top of the cavity two. The side wall of the housing is also equipped with a discharge pipe that communicates with the bottom of the cavity, and a valve is provided on the discharge pipe.

4. The water ecological survey device according to claim 3, characterized in that, The connecting assembly includes hose one and hose two; The carrier disk has a hollow structure, and the inner cavity of the carrier disk is connected to the bottom of the cavity through a flexible tube. The side sampling tube is also connected to the inner cavity of the carrier disk through a flexible tube.

5. The water ecological survey device according to claim 4, characterized in that, The support assembly includes a U-shaped rod, a collar, a connecting shaft, a U-shaped seat, and a support shaft; The side wall of the housing is provided with an installation port for the side sampling tube to pass through. A U-shaped rod is fixed to the upper side of the installation port on the side wall of the housing. A collar is rotatably installed on the U-shaped rod, and a connecting shaft is rotatably installed on the collar. A U-shaped seat is fixed to the end of the connecting shaft away from the collar. The U-shaped seat is rotatably connected to the side sampling tube through a support shaft.

6. The water ecological survey device according to claim 5, characterized in that, The side sampling tube adopts an L-shaped structure. The connection between the support shaft and the side sampling tube is located at the corner of the side sampling tube. One end of the side sampling tube is hinged to the lower outer ring of the carrier plate.

7. The water ecological survey device according to claim 6, characterized in that, A one-way valve is also installed at the lower end of the side sampling tube.

8. The water ecological survey device according to claim 7, characterized in that, One end of the side sampling tube is slidably hinged to the lower outer ring of the carrier disk.

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