Multi-parameter floating sampling device for monitoring riverway water quality

Abstract

The invention relates to a multi-parameter floating sampling device for river water quality monitoring. Comprising a base, an air bag fixedly arranged on the base, an electric control mechanism fixedly arranged on the base, an adjusting mechanism fixedly arranged on the base, a sampling mechanism fixedly arranged on the base, a storage mechanism fixedly arranged on the sampling mechanism, a top cover rotationally arranged on the base, a sealing ring fixedly arranged on the base and hooks fixedly arranged on the base and the top cover. The adjusting mechanism comprises a driving assembly fixedly arranged on the base, a first mounting groove fixedly formed in the base, a driving disc rotationally arranged on the first mounting groove, a bottom plate rotationally arranged on the base, a plurality of first limiting assemblies fixedly arranged on the driving disc and the bottom plate, and stretching assemblies symmetrically arranged on the base in a sliding mode and matched with the driving disc. The problem that an existing sampling device can only sample a water body on the surface of a river channel is solved, water bodies at different depths and different positions can be collected, and multi-parameter sampling is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of water quality sampling devices, and in particular to a multi-parameter floating sampling device for river water quality monitoring. Background Art

[0002] Water is the source of life. Human beings cannot live without water in their lives and production activities. However, with the progress of industry, social development and the intensification of human activities, a large amount of pollutants have entered lakes and rivers, causing the water quality of rivers to be damaged. This not only affects the use of domestic water, but also damages biological resources. In order to protect people's health and life safety, it is necessary to conduct long-term and regular scientific monitoring of river water quality. When testing water quality, it is necessary to use a floating sampling device to sample and analyze the water.

[0003] Existing floating sampling devices usually only sample the water on the surface of the river during sampling, which results in a single sampling parameter and makes it impossible to monitor the overall water quality of the river. Therefore, a multi-parameter floating sampling device is needed to monitor the overall water quality of the river. Summary of the invention

[0004] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0005] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a multi-parameter floating sampling device for river water quality monitoring, including a base, an air bag fixedly arranged on the base, an electric control mechanism fixedly arranged on the base, an adjustment mechanism fixedly arranged on the base, a sampling mechanism fixedly arranged on the base, a storage mechanism fixedly arranged on the sampling mechanism, a top cover rotatably arranged on the base, a sealing ring fixedly arranged on the base, and a hook fixedly arranged on the base and the top cover;

[0006] The adjustment mechanism includes a driving component fixedly arranged on the base, a first mounting slot fixedly arranged on the base, a driving disk rotatably arranged on the first mounting slot, a bottom plate rotatably arranged on the base, a plurality of first limit components fixedly arranged on the driving disk and the bottom plate, and a stretching component symmetrically slidably arranged on the base and cooperating with the driving disk;

[0007] The stretching assembly includes a first slider slidably arranged on the base and matched with the driving disk, a second slider slidably arranged on the base and matched with the driving disk, a first connecting rod rotatably arranged on the first slider, a second connecting rod rotatably arranged on the second slider, a plurality of third connecting rods connected end to end and rotatably arranged on one end of the first connecting rod, a plurality of fourth connecting rods connected end to end and rotatably arranged on one end of the second connecting rod, a first rotating shaft penetrating the third connecting rod and the fourth connecting rod, and a sampling platform sleeved on one end of the third connecting rod and simultaneously sleeved on one end of the fourth connecting rod; the third connecting rod and the fourth connecting rod are cross-arranged.

[0008] Specifically, the driving assembly includes a motor fixed on the base, and a gear fixed on the motor and matched with the driving disc.

[0009] Specifically, the first limiting assembly includes a first bracket fixed on the base, a second mounting groove fixed on the driving disk, a first limiting block slidably arranged on the second mounting groove, a first spring with one end fixed on the driving disk and the other end fixed on the first limiting block, a third mounting groove fixed on the first bracket, a second limiting block slidably arranged on the third mounting groove, a second spring with one end fixed on the first bracket and the other end fixed on the second limiting block, the first limiting groove fixed on the bottom plate, and the second limiting groove fixed on the bottom plate.

[0010] Specifically, the electric control mechanism includes a battery fixedly arranged on the base, a positioning device fixedly arranged on the base, and an electric control board fixedly arranged on the base.

[0011] Specifically, the sampling mechanism includes a filter cover fixed on the sampling platform, a water pump fixed on the sampling platform, a second limit assembly rotatably arranged on the base, and a first hose with one end fixed on the water pump and the other end fixed on the second limit assembly.

[0012] Specifically, the second limiting assembly includes a first slide groove fixed on the driving disk and the base, a first damping block fixed on the first slide groove, a plurality of first driving teeth fixed on the driving disk, a connecting disk rotatably arranged on the first slide groove and sliding along the first slide groove, a plurality of second driving teeth fixed on the connecting disk, a plurality of third driving teeth fixed on the connecting disk, a second bracket rotatably arranged on the driving disk, and a fourth driving tooth fixed on the second bracket.

[0013] Specifically, the storage mechanism includes a cleaning component fixed on the bottom plate, multiple loading components fixed on the bottom plate, a second hose with one end rotatably mounted on the cleaning component and the other end fixed on the first hose, a third hose with one end fixed on the cleaning component and the other end fixed on the loading component, and a fourth hose fixed on the cleaning component.

[0014] Specifically, the cleaning component includes a cleaning pipe fixed on the bottom plate, a partition fixed on the cleaning pipe, a plurality of first valves fixed on the cleaning pipe, a second valve fixed on the cleaning pipe, a second slide fixed on the cleaning pipe, a first float slidably arranged on the second slide, a fifth hose with one end fixed on the cleaning pipe and the other end fixed on the first float, and a closing device fixed on the cleaning pipe and the partition.

[0015] Specifically, the loading assembly includes a plurality of spring telescopic rods fixedly arranged on a base, a support plate fixedly arranged on the spring telescopic rods, and a storage tube fixedly arranged on the support plate.

[0016] Specifically, the closing device includes a fourth mounting groove fixed on the cleaning pipe, a fifth connecting rod slidably arranged on the fourth mounting groove, a sixth connecting rod slidably arranged on the fourth mounting groove, a seventh connecting rod slidably arranged on the fourth mounting groove, an eighth connecting rod slidably arranged on the fourth mounting groove, a third bracket fixed on the partition, a closing plate slidably arranged on the partition and the third bracket, and a third spring with one end fixed on the fifth connecting rod and the other end fixed on the cleaning pipe.

[0017] The beneficial effects of the present invention are:

[0018] (1) The sampling device is fixed at one point by a hook, and sampling can be performed at different depths and at different times at a single point. The sampling depth can also be fixed, allowing the sampling device to sample at different locations in the river to achieve multi-parameter sampling.

[0019] (2) The storage tube, the third hose, and the cleaning tube form a connector, so that the liquid in the cleaning tube can enter the storage tube. After the storage tube is loaded with liquid, its weight increases and it moves downward, driving the spring telescopic rod to stretch. The downward movement of the storage tube can reduce the exposure to external sunlight. At the same time, part of the storage tube will enter the river after moving downward, reducing the changes in microorganisms caused by the temperature rise in the storage tube due to sunlight, which ultimately leads to the problem of deviation between the sampled sample and the actual water body, thereby ensuring the accuracy of the monitoring results.

[0020] (3) The sampling function is realized by using a motor and a water pump, which is more energy-efficient than the existing sampling devices, so that the present invention can be adapted to long-term sampling of the river. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0022] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0023] In the attached picture:

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 A top view of the present invention;

[0026] Figure 3 for Figure 2 Line section of AA in the middle;

[0027] Figure 4 for Figure 2 Linear section of the middle BB;

[0028] Figure 5 for Figure 3 A partial enlarged view of point C in the middle;

[0029] Figure 6 for Figure 3 Line section of the middle DD;

[0030] Figure 7 for Figure 4 A partial enlarged view of point E in the middle;

[0031] Figure 8 It is a schematic diagram of the partial structure of the present invention Figure 1 ;

[0032] Fig. 9 It is a partial structural top view of the present invention;

[0033] Fig.10 for Fig. 9 Line section of the middle FF;

[0034] Fig.11 for Fig.10 Partial line section of middle GG;

[0035] Fig.12 It is a schematic diagram of the partial structure of the present invention Figure 2 . DETAILED DESCRIPTION

[0036] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0037] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0038] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0039] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0040] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0041] Reference Figure 1-12 As shown, a multi-parameter floating sampling device for river water quality monitoring described in the present invention comprises a base 1, an air bag 2 fixed on the base, an electric control mechanism 3 fixed on the base, an adjusting mechanism 4 fixed on the base, a sampling mechanism 5 fixed on the base, a storage mechanism 6 fixed on the sampling mechanism, a top cover 7 rotatably arranged on the base, a sealing ring 8 fixed on the base, and a hook 9 fixed on the base and the top cover; the base is cylindrical; the air bag expands after being inflated, so that the sampling device can float on the water surface; the electric control mechanism is used to control the electric control components and record information; the adjusting mechanism is used to adjust the sampling depth to achieve multi-parameter sampling; the sampling mechanism can sample the water body; the storage mechanism is used to store the sampled water body; the top cover and the sealing ring are used for sealing, and the top cover is dark in color, which can prevent the microorganisms in the water body in the storage mechanism from changing due to sunlight, thereby causing deviations in the monitoring results of the sampled water body; the hook can be connected to a rod or a fixed anchor, so that the sampling device can perform single-point multiple sampling;

[0042] The adjustment mechanism includes a driving assembly 41 fixed on the base, a first mounting groove 42 fixed on the base, a driving disk 43 rotatably mounted on the first mounting groove, a bottom plate 44 rotatably mounted on the base, a plurality of first limiting assemblies 45 fixed on the driving disk and the bottom plate, and a stretching assembly 46 symmetrically slidably mounted on the base and cooperating with the driving disk; the driving assembly is used to drive the driving disk to rotate, thereby adjusting the sampling depth; teeth are provided on the side of the driving disk to cooperate with the driving assembly, and an Archimedean thread groove is provided on the side of the driving disk that contacts the stretching assembly; the first limiting assembly is used to limit the rotation direction of the bottom plate; the stretching assembly is used to adjust the sampling depth;

[0043] The stretching assembly includes a first slider 461 slidably disposed on the base and matched with the driving disk, a second slider 462 slidably disposed on the base and matched with the driving disk, a first connecting rod 463 rotatably disposed on the first slider, a second connecting rod 464 rotatably disposed on the second slider, a plurality of third connecting rods 465 connected end to end and rotatably disposed on one end of the first connecting rod, a plurality of fourth connecting rods 466 connected end to end and rotatably disposed on one end of the second connecting rod, a first rotating shaft 467 penetrating the third connecting rod and the fourth connecting rod, and a sampling platform 468 sleeved on one end of the third connecting rod and simultaneously sleeved on one end of the fourth connecting rod; The third connecting rod and the fourth connecting rod are arranged crosswise; the first slider and the second slider are provided with teeth on the side in contact with the driving disk, which mesh with the Archimedean thread groove on the driving disk; in the initial state, the first connecting rod and the second connecting rod are inclined, the first connecting rod is parallel to the fourth connecting rod, and the second connecting rod is parallel to the third connecting rod; when the driving disk rotates clockwise, it will drive the first slider and the second slider to approach each other, thereby pushing the first connecting rod and the second connecting rod to rotate, thereby driving the third connecting rod and the fourth connecting rod to rotate, the angle between the first connecting rod and the third connecting rod increases, and the angle between the second connecting rod and the fourth connecting rod increases, so that the sampling platform moves downward.

[0044] Specifically, the driving assembly includes a motor 411 fixed on the base and a gear 412 fixed on the motor and matched with the driving disk; the motor is existing technology and can be purchased from the market; the gear is meshed with the driving disk; the motor drives the gear to rotate, and then drives the driving disk to rotate.

[0045] Specifically, the first limiting assembly includes a first bracket 451 fixed on the base, a second mounting slot 452 fixed on the driving disk, a first limiting block 453 slidably arranged on the second mounting slot, a first spring 454 having one end fixed on the driving disk and the other end fixed on the first limiting block, a third mounting slot 455 fixed on the first bracket, a second limiting block 456 slidably arranged on the third mounting slot, a second spring 457 having one end fixed on the first bracket and the other end fixed on the second limiting block, a first limiting slot 458 fixed on the bottom plate, and a second limiting slot 459 fixed on the bottom plate; the first limiting block and the second limiting block are provided with inclined surfaces; the first limiting slot and the second limiting slot are provided with inclined surfaces, which are aligned with the first limiting block and the second limiting block. The limit blocks correspond; taking the top view as a reference, when the driving disk rotates clockwise, the first limit block will apply a force to the bottom plate, causing the bottom plate to tend to rotate clockwise. At this time, the second limit block is subjected to force on the inclined surface, so the force applied by the first limit block to the bottom plate will cause the inclined surface of the second limiting groove to squeeze the inclined surface of the second limit block, causing the second limit block to move downward, the second spring is compressed, and the bottom plate can rotate clockwise together with the driving disk; when the driving disk rotates counterclockwise, the inclined surface of the first limit block is subjected to force, and this force causes the bottom plate to tend to rotate clockwise, but at this time the second limit block is subjected to force on the flat surface, the second limit block cannot slide downward, and the first limit block is subjected to force to slide into the second mounting groove, the first spring is compressed, the driving disk rotates alone, and the bottom plate cannot rotate due to the limitation of the second limit block.

[0046] Specifically, the electric control mechanism includes a battery 31 fixed on the base, a positioning device 32 fixed on the base, and an electric control board 33 fixed on the base; the battery is a prior art and can be purchased from the market, and is used for power supply; the positioning device is a prior art and can be purchased from the market, and is used to locate the position of the sampling device; the electric control board is a prior art and can be purchased from the market, and is used to control various electric control components.

[0047] Specifically, the sampling mechanism includes a filter cover 51 fixed on the sampling platform, a water pump 52 fixed on the sampling platform, a second limiting assembly 53 rotatably arranged on the base, and a first hose 54 with one end fixed on the water pump and the other end fixed on the second limiting assembly; the filter cover is used to filter weeds in the river; the water pump is used for sampling; the second limiting assembly is used to limit the length of the first hose; the first hose passes through the bottom plate and is coiled on the bottom plate in the initial state.

[0048] Specifically, the second limiting assembly includes a first slide groove 531 fixed on the driving disk and the base, a first damping block 532 fixed on the first slide groove, a plurality of first driving teeth 533 fixed on the driving disk, a connecting disk 534 rotatably arranged on the first slide groove and sliding along the first slide groove, a plurality of second driving teeth 535 fixed on the connecting disk, a plurality of third driving teeth 536 fixed on the connecting disk, a second bracket 537 rotatably arranged on the driving disk, and a fourth driving tooth 538 fixed on the second bracket; the height of the first slide groove is twice the height of the connecting disk; the first damping block is used to limit the rotation of the connecting disk, and its height is equal to the height of the connecting disk; a plurality of second driving teeth and third driving teeth are arranged on the connecting disk, and adjacent second driving teeth are fitted together, and adjacent second driving teeth are fitted together; a plurality of first driving teeth are arranged on the driving disk, and adjacent driving teeth are fitted together; in the initial state, the first driving teeth are meshed with the second driving teeth, and the third driving teeth are spaced apart from the fourth driving teeth. Based on the top view, the driving disk moves in the forward direction. When the drive disc rotates clockwise, since the third driving tooth and the fourth driving tooth are not in contact, the first driving tooth and the flat surface of the second driving tooth are in contact with force, so the driving disc drives the connecting disc to rotate clockwise with the resistance of the first damping block, and the clockwise rotation of the driving disc will drive the sampling platform to move downward, thereby pulling the first hose to move, and one end of the first hose is fixed on the second bracket, so the second bracket will rotate and slide on the base; when the driving disc rotates counterclockwise, the sampling platform will rise, and the first hose needs to be reeled in. When the driving disc rotates counterclockwise, the inclined contact surface of the first driving tooth and the second driving tooth is subjected to force, so that the connecting disc has an upward movement trend and a rotational movement trend, and the connecting disc is subjected to the rotational resistance of the first damping block, so the connecting disc will slide upward and disengage from the first damping block. After the first connecting disc moves upward, the inclined surface of the third driving tooth will contact the inclined surface of the fourth driving tooth. At this time, the connecting disc, the second driving tooth, and the third driving tooth have a transmission effect, so that the driving disc drives the fourth bracket to rotate and reel in the first hose.

[0049] Specifically, the storage mechanism includes a cleaning component 61 fixed on the bottom plate, a plurality of loading components 62 fixed on the bottom plate, a second hose 63 with one end rotatably mounted on the cleaning component and the other end fixedly mounted on the first hose, a third hose 64 with one end fixedly mounted on the cleaning component and the other end fixedly mounted on the loading component, and a fourth hose 65 fixedly mounted on the cleaning component; the cleaning component can be cleaned. Since water bodies at different positions and depths need to be sampled, some water will remain in the device after a single sampling is completed, which will interfere with the next sampling. The cleaning component can be cleaned before each sampling to avoid residual water from the previous sampling; the loading component is used to store the sampled water; the second hose is a corrugated tube, which can be stretched, and one end is rotatably mounted on the cleaning component. When the fourth bracket rotates, the second hose can also rotate together; the third hose connects the loading component and the cleaning component, so that water enters the loading component from the cleaning component; the fourth hose is used to discharge waste liquid used for cleaning.

[0050] Specifically, the cleaning assembly includes a cleaning pipe 611 fixed on the bottom plate, a partition 612 fixed on the cleaning pipe, a plurality of first valves 613 fixed on the cleaning pipe, a second valve 614 fixed on the cleaning pipe, a second slide 615 fixed on the cleaning pipe, a first floating plate 616 slidably arranged on the second slide, a fifth hose 617 fixed on the cleaning pipe at one end and fixed on the first floating plate at the other end, and a closing device 618 fixed on the cleaning pipe and the partition; the cleaning pipe is fixed on the bottom plate, and a one-way valve is provided on the top for ventilation, and the conduction direction is It is unidirectional and conducts from outside to inside; the partition divides the internal space of the cleaning pipe into two cavities; the number of the first valves corresponds to the third hoses one by one and is controlled by the electric control board; the second valve cooperates with the fourth hose and is controlled by the electric control board; the first float can slide on the second slide; a damping block is provided on the top of the second slide to slow down the falling speed of the first float; the fifth hose is a bellows and can be stretched and shortened; the closing device is used to control the liquid in the upper cavity to enter the lower cavity; the sampled liquid enters the second hose from the first hose, and then enters the cleaning pipe from the fifth hose, so that the first float slides upward in the second slide.

[0051] Specifically, the loading assembly includes a plurality of spring telescopic rods 621 fixed on a base, a support plate 622 fixed on the spring telescopic rods, and a storage tube 623 fixed on the support plate; a one-way valve is provided on the top of the storage tube for ventilation, and the conduction direction is one-way conduction from outside to inside; one end of the third hose is connected to the storage tube by a thread, and the connection position can be located above or below the storage tube; a one-way valve is provided at the connection between the storage tube and the third hose, which is one-way conduction from outside to inside; the storage tube, the third hose, and the cleaning tube form a connector, so that the liquid in the cleaning tube can enter the storage tube. After the storage tube is loaded with liquid, the weight increases and it will move downward, driving the spring telescopic rod to stretch. After the storage tube moves downward, the external sunlight exposure can be reduced. At the same time, part of the storage tube will enter the river after moving downward, reducing the microbial changes caused by the temperature rise in the storage tube due to sunlight exposure, which ultimately leads to the problem of deviation between the sampled sample and the actual water body.

[0052] Specifically, the closing device includes a fourth mounting groove 6181 fixedly mounted on the cleaning pipe, a fifth connecting rod 6182 slidably mounted on the fourth mounting groove, a sixth connecting rod 6183 slidably mounted on the fourth mounting groove, a seventh connecting rod 6184 slidably mounted on the fourth mounting groove, an eighth connecting rod 6185 slidably mounted on the fourth mounting groove, a third bracket 6186 fixedly mounted on the partition, a closing plate 6187 slidably mounted on the partition and the third bracket, and a third spring 6188 having one end fixedly mounted on the fifth connecting rod and the other end fixedly mounted on the cleaning pipe; a limit stop is provided on the closing plate. The fifth connecting rod cooperates with the limiting groove to limit the closing plate; the eighth connecting rod is provided with a sensor for counting and recording the number of times the first floating plate touches; in the initial state, the fifth connecting rod limits the closing plate, and the upper and lower cavities of the cleaning pipe are not connected. When the upper cavity is injected with liquid, the first floating plate rises, and the first floating plate pushes the eighth connecting rod to move upward, the eighth connecting rod pushes the seventh connecting rod to move, the seventh connecting rod pushes the sixth connecting rod to move downward, the sixth connecting rod pushes the fifth connecting rod to move, the third spring is compressed, and at the same time, the fifth connecting rod releases the limit on the closing plate, and the closing plate moves downward due to gravity, and the cleaning The upper and lower cavities of the tube are connected, and the liquid enters the lower cavity. The liquid enters the upper cavity and the lower cavity to clean the inside of the cleaning tube. When the liquid enters the lower cavity, a damping block is provided on the top of the second chute to slow down the falling speed of the first floating plate, so that the liquid has sufficient time to flow into the lower cavity. The first floating plate moves downward and disengages from the eighth connecting rod at the same time. The third spring pushes the fifth connecting rod to move and drives the sixth connecting rod to the eighth connecting rod to reset. After the liquid enters the lower cavity, the closing plate will rise due to the buoyancy, pushing the fifth connecting rod to move, and the third spring is compressed. When the limit After the groove is aligned with the fifth connecting rod, the third spring pushes the fifth connecting rod to limit the closing plate; since the first floating plate is equipped with a sensor on the eighth connecting rod, after the water pump draws water, when the first floating plate contacts the eighth connecting rod an odd number of times, the electronic control board will control the second valve to open after a certain period of time, and the liquid can be discharged from the fourth hose, that is, the cleaned liquid is discharged, and then the adjusting mechanism remains unchanged, and the water pump draws water again. After the first floating plate contacts the eighth connecting rod an even number of times, the second valve will not open, and the electronic control board will control the first valve to open one at a time in sequence, that is, one storage tube is filled and sampled each time.

[0053] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A multi-parameter floating sampling device for river water quality monitoring, Features: The device comprises a base (1), an air bag (2) fixedly arranged on the base, an electric control mechanism (3) fixedly arranged on the base, an adjustment mechanism (4) fixedly arranged on the base, a sampling mechanism (5) fixedly arranged on the base, a storage mechanism (6) fixedly arranged on the sampling mechanism, a top cover (7) rotatably arranged on the base, a sealing ring (8) fixedly arranged on the base, and a hook (9) fixedly arranged on the base and the top cover; The adjustment mechanism comprises a driving assembly (41) fixedly arranged on the base, a first mounting groove (42) fixedly arranged on the base, a driving disk (43) rotatably arranged on the first mounting groove, a bottom plate (44) rotatably arranged on the base, a plurality of first limiting assemblies (45) fixedly arranged on the driving disk and the bottom plate, and a stretching assembly (46) symmetrically slidably arranged on the base and cooperating with the driving disk; The stretching assembly includes a first slider (461) slidably arranged on the base and cooperating with the driving disk, a second slider (462) slidably arranged on the base and cooperating with the driving disk, a first connecting rod (463) rotatably arranged on the first slider, a second connecting rod (464) rotatably arranged on the second slider, a plurality of third connecting rods (465) connected end to end and rotatably arranged on one end of the first connecting rod, a plurality of fourth connecting rods (466) connected end to end and rotatably arranged on one end of the second connecting rod, a first rotating shaft (467) penetrating the third connecting rod and the fourth connecting rod, and a sampling platform (468) sleeved on one end of the third connecting rod and simultaneously sleeved on one end of the fourth connecting rod; the third connecting rod and the fourth connecting rod are cross-arranged.

2. A multi-parameter floating sampling device for river water quality monitoring according to claim 1, Features: The driving assembly comprises a motor (411) fixed on a base, and a gear (412) fixed on the motor and matched with the driving disc.

3. A multi-parameter floating sampling device for river water quality monitoring according to claim 1, Features: The first limiting assembly comprises a first bracket (451) fixed on the base, a second mounting groove (452) fixed on the driving disk, a first limiting block (453) slidably arranged on the second mounting groove, a first spring (454) with one end fixed on the driving disk and the other end fixed on the first limiting block, a third mounting groove (455) fixed on the first bracket, a second limiting block (456) slidably arranged on the third mounting groove, a second spring (457) with one end fixed on the first bracket and the other end fixed on the second limiting block, a first limiting groove (458) fixed on the bottom plate, and a second limiting groove (459) fixed on the bottom plate.

4. A multi-parameter floating sampling device for river water quality monitoring according to claim 1, Features: The electric control mechanism comprises a battery (31) fixedly arranged on the base, a positioning device (32) fixedly arranged on the base, and an electric control board (33) fixedly arranged on the base.

5. A multi-parameter floating sampling device for river water quality monitoring according to claim 1, Features: The sampling mechanism comprises a filter cover (51) fixedly mounted on the sampling platform, a water pump (52) fixedly mounted on the sampling platform, a second position-limiting component (53) rotatably mounted on a base, and a first hose (54) having one end fixedly mounted on the water pump and the other end fixedly mounted on the second position-limiting component.

6. A multi-parameter floating sampling device for river water quality monitoring according to claim 5, Features: The second limiting assembly includes a first slide groove (531) fixedly arranged on the driving disk and the base, a first damping block (532) fixedly arranged on the first slide groove, a plurality of first driving teeth (533) fixedly arranged on the driving disk, a connecting disk (534) rotatably arranged on the first slide groove and sliding along the first slide groove, a plurality of second driving teeth (535) fixedly arranged on the connecting disk, a plurality of third driving teeth (536) fixedly arranged on the connecting disk, a second bracket (537) rotatably arranged on the driving disk, and a fourth driving tooth (538) fixedly arranged on the second bracket.

7. A multi-parameter floating sampling device for river water quality monitoring according to claim 5, Features: The storage mechanism comprises a cleaning component (61) fixedly mounted on a bottom plate, a plurality of loading components (62) fixedly mounted on the bottom plate, a second hose (63) having one end rotatably mounted on the cleaning component and the other end fixedly mounted on the first hose, a third hose (64) having one end fixedly mounted on the cleaning component and the other end fixedly mounted on the loading component, and a fourth hose (65) fixedly mounted on the cleaning component.

8. A multi-parameter floating sampling device for river water quality monitoring according to claim 7, Features: The cleaning component comprises a cleaning pipe (611) fixedly arranged on a bottom plate, a partition (612) fixedly arranged on the cleaning pipe, a plurality of first valves (613) fixedly arranged on the cleaning pipe, a second valve (614) fixedly arranged on the cleaning pipe, a second slide groove (615) fixedly arranged on the cleaning pipe, a first floating plate (616) slidably arranged on the second slide groove, a fifth hose (617) having one end fixedly arranged on the cleaning pipe and the other end fixedly arranged on the first floating plate, and a closing device (618) fixedly arranged on the cleaning pipe and the partition.

9. A multi-parameter floating sampling device for river water quality monitoring according to claim 7, Features: The loading assembly comprises a plurality of spring telescopic rods (621) fixedly arranged on a base, a support plate (622) fixedly arranged on the spring telescopic rods, and a storage tube (623) fixedly arranged on the support plate.

10. A multi-parameter floating sampling device for river water quality monitoring according to claim 8, Features: The closing device includes a fourth mounting groove (6181) fixed on the cleaning pipe, a fifth connecting rod (6182) slidably arranged on the fourth mounting groove, a sixth connecting rod (6183) slidably arranged on the fourth mounting groove, a seventh connecting rod (6184) slidably arranged on the fourth mounting groove, an eighth connecting rod (6185) slidably arranged on the fourth mounting groove, a third bracket (6186) fixed on the partition, a closing plate (6187) slidably arranged on the partition and the third bracket, and a third spring (6188) with one end fixed on the fifth connecting rod and the other end fixed on the cleaning pipe.

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