A layered sampling device for soil and water loss monitoring

Abstract

The present invention relates to the technical field of water quality sampling, and discloses a layered sampling device for soil and water loss monitoring, which includes a mounting base, a collection assembly, a sampling assembly and a power assembly; an installation groove is formed in the mounting base; the collection assembly includes a collection box, a plurality of partition plates and a plurality of sealing assemblies. The plurality of partition plates divide the collection box into a plurality of cavities, and each cavity is selectively communicated with a second through hole, and a sealing assembly is arranged in each second through hole; the sampling assembly includes a fixed pipe, a first telescopic pipe, a second telescopic pipe and a sampling hose. One end of the sampling hose is connected to the other end of the second telescopic pipe, and the other end of the sampling hose is communicated with the collection box; the power assembly is used to provide power for the movement of the sampling assembly and the collection box. The present invention can continuously transport water samples at different depths to different cavities for storage, without the need to take them out of the water surface for separate storage after each collection, which is more convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality sampling, and more specifically, it relates to a layered sampling device for soil erosion monitoring. Background Art

[0002] Soil erosion refers to the phenomenon that due to the influence of natural or human factors, rainwater cannot be absorbed locally, flows downstream, and scours the soil, resulting in the simultaneous loss of water and soil. The main reasons are large ground slopes, improper land use, damage to ground vegetation, unreasonable farming techniques, loose soil quality, deforestation, overgrazing, etc. The harms of soil erosion are mainly manifested in: the erosion and damage of the soil tillage layer, which makes the soil fertility decline day by day; the silting of rivers, channels, and reservoirs, reducing the benefits of water conservancy projects, and even leading to the occurrence of floods and droughts, seriously affecting industrial and agricultural production; soil erosion poses a serious threat to mountainous agricultural production and downstream river channels.

[0003] In order to accurately monitor the sediment content in river water, it is usually necessary to collect water samples at different depths, and then process the collected water samples through appropriate methods such as the acid-base method or the screening method to determine the sediment content in water samples at different depths. When existing measuring tools sample water samples at different depths, they usually first take a water sample at a certain depth, then take it out of the water surface for storage, and then use the same method to collect water samples at other depths. Such operation is relatively cumbersome and inconvenient to use. For this reason, we propose a layered sampling device for soil erosion monitoring. Summary of the Invention

[0004] The present invention provides a layered sampling device for soil erosion monitoring, which solves the technical problem of cumbersome operation in collecting water samples at different depths in related technologies.

[0005] The present invention provides a layered sampling device for soil erosion monitoring, including: a mounting base, inside which an installation groove is opened; a collection assembly, which includes: a collection box and a plurality of partition boards, the collection box is rotatably connected in the installation groove; the plurality of partition boards are arranged in the collection box to divide the collection box into a plurality of cavities for collecting water samples at different depths, a second through hole is opened in each cavity, and a sealing assembly is arranged in each second through hole; a sampling assembly, which includes: a sampling hose and a fixed pipe connected to the mounting base, a first telescopic pipe is slidably connected in the fixed pipe, a second telescopic pipe is slidably connected in the first telescopic pipe, and the sampling hose is used to selectively communicate the water sample with the plurality of second through holes; a power assembly, which is used to provide power for the movement of the sampling assembly and the collection box.

[0006] As a further improvement of the present invention, the outer contour structures of the mounting base, the installation groove, and the collection box are all cylindrical structures, and the outer circumferential wall of the collection box is arranged in contact with the inner circumferential wall of the installation groove.

[0007] As a further improvement of the present invention, the power assembly includes: a driving assembly for driving the first telescopic tube and the second telescopic tube to move along their axial directions; the driving assembly includes: a first cylinder, a second cylinder, a first connecting plate and a second connecting plate. The first connecting plate and the second connecting plate are respectively connected to the first telescopic tube and the second telescopic tube. The fixed end of the first cylinder is connected to the mounting base, the telescopic end of the first cylinder is connected to the first connecting plate, the fixed end of the second cylinder is connected to the first connecting plate, and the telescopic end of the second cylinder is connected to the second connecting plate.

[0008] As a further improvement of the present invention, a rotating shaft is fixedly connected to the bottom of the collection box, and the free end of the rotating shaft is rotatably connected to the bottom of the installation groove; the power assembly further includes: a transmission assembly for transmitting the movement of the second telescopic tube to the rotating shaft to drive the rotating shaft to rotate. The transmission assembly includes: two first mounting plates, a second mounting plate, a winding shaft, a transmission shaft, a first bevel gear, a second bevel gear, a torsion spring and a pulling rope. The two first mounting plates and the second mounting plate are fixedly connected in the installation groove. The two ends of the winding shaft are respectively rotatably connected to the two first mounting plates. The transmission shaft is rotatably connected to the second mounting plate. A pulley assembly is connected between the winding shaft and the transmission shaft. The two ends of the torsion spring are respectively fixedly connected to any one of the first mounting plates and the winding shaft. The first bevel gear and the second bevel gear are respectively fixedly connected to the transmission shaft and the rotating shaft, and the first bevel gear and the second bevel gear are adapted to each other. The two ends of the pulling rope are respectively connected to the winding shaft and the second telescopic tube.

[0009] As a further improvement of the present invention, an annular sealing ring is provided at one end of the sampling hose close to the collection box. The sealing ring is attached to the collection box. The diameter of the second through hole is larger than the diameter of the sampling hose and smaller than the outer diameter of the sealing ring.

[0010] As a further improvement of the present invention, the first connecting plate is connected to the middle position of the first telescopic tube, and an avoidance hole is axially formed on the outer wall of the fixed tube on the side away from the mounting base. The first connecting plate selectively slides in the avoidance hole. The second connecting plate is connected to the end of the second telescopic tube away from the fixed tube.

[0011] As a further improvement of the present invention, a sealing seat is provided on the inner wall of the end of the second telescopic tube away from the fixed tube to seal the end of the second telescopic tube away from the fixed tube. The end of the sampling hose away from the collection box passes through the sealing seat and communicates with the outside. A pump body is provided on the sealing seat, and the pump body is connected to the sampling hose.

[0012] As a further improvement of the present invention, the sealing assembly includes: a cut-off groove and a cut-off plate; the cut-off groove includes: a cut-off portion and an installation portion communicating with the cut-off portion, the cut-off portion is concentric with the second through hole, and the diameter of the cut-off portion is larger than the diameter of the second through hole; the cut-off plate includes: a sealing portion and a rotating portion connected to the sealing portion, the sealing portion is concentric with the second through hole, the diameter of the sealing portion is larger than the diameter of the second through hole, and the diameter of the sealing portion is smaller than the diameter of the cut-off portion, the rotating portion is rotatably connected within the installation portion, and the cut-off plate selectively seals the second through hole.

[0013] As a further improvement of the present invention, an annular fixing seat is provided on the outer wall of the end of the second telescopic tube away from the fixed tube, an annular connecting ring is provided on the fixing seat, a plurality of arc-shaped blocking strips are arranged at intervals in an annular array on the connecting ring, and the free ends of the plurality of arc-shaped blocking strips are arranged close to each other.

[0014] As a further improvement of the present invention, the connecting ring is rotatably connected to the fixing seat.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. By providing a fixed tube, a first telescopic tube and a second telescopic tube that can slide relative to each other, and connecting one end of the sampling hose to the second telescopic tube, the length of the entire device can be adjusted by adjusting the distance between the second telescopic tube and the fixed tube, so as to sample water samples at various depths. In addition, the space in the collection box is divided into multiple cavities by a plurality of partitions, and the rotation of the collection box is controlled by the transmission assembly through the movement of the second telescopic tube, so that water samples at different depths can be transported to different cavities for storage, and continuous operation underwater can be realized without taking out the water surface for separate storage after each collection, which is more convenient to use.

[0017] 2. By providing a plurality of arc-shaped blocking strips at the other end of the second telescopic tube, the situation that large-volume flexible impurities block the sampling hose can be effectively reduced. In addition, the connecting ring is set to a rotatable structure, which is beneficial to remove the flexible impurities wound on the arc-shaped blocking strips by water flow to achieve self-cleaning. Description of the Drawings

[0018] Figure 1 is a three-dimensional structural schematic diagram of a layered sampling device for soil and water loss monitoring according to an embodiment of the present invention;

[0019] Figure 2 is a side view structural schematic diagram of a layered sampling device for soil and water loss monitoring according to an embodiment of the present invention;

[0020] Figure 3 It is the first front view sectional structure schematic diagram of a layered sampling device for soil and water loss monitoring according to an embodiment of the present invention;

[0021] Figure 4 It is the second front view sectional structure schematic diagram of a layered sampling device for soil and water loss monitoring according to an embodiment of the present invention;

[0022] Figure 5 It is Figure 4 The enlarged view of part A in

[0023] Figure 6 It is Figure 4 The enlarged view of part B in

[0024] Figure 7 It is the first top view sectional structure schematic diagram of a layered sampling device for soil and water loss monitoring according to an embodiment of the present invention;

[0025] Figure 8 It is Figure 7 The enlarged view of part C in

[0026] Figure 9 It is the second top view sectional structure schematic diagram of a layered sampling device for soil and water loss monitoring according to an embodiment of the present invention;

[0027] Figure 10 It is the partial three-dimensional sectional structure schematic diagram of a layered sampling device for soil and water loss monitoring according to an embodiment of the present invention.

[0028] In the figure: 1. Mounting base; 11. Mounting groove; 111. First through hole; 2. Collection assembly; 21. Collection box; 22. Rotating shaft; 23. Partition board; 24. Sealing assembly; 241. Interception groove; 2411. Interception part; 2412. Mounting part; 242. Interception plate; 2421. Sealing part; 2422. Rotating part; 25. Cavity; 251. Second through hole; 3. Sampling assembly; 31. Fixed pipe; 32. First telescopic pipe; 321. Avoidance hole; 33. Second telescopic pipe; 331. Sealing seat; 332. Fixed seat; 333. Connecting ring; 334. Arc-shaped blocking strip; 34. Pump body; 35. Sampling hose; 351. Sealing ring; 4. Power assembly; 41. Driving assembly; 411. First cylinder; 412. Second cylinder; 413. First connecting plate; 414. Second connecting plate; 42. Transmission assembly; 421. First mounting plate; 422. Second mounting plate; 423. Take-up reel; 424. Transmission shaft; 425. First bevel gear; 426. Second bevel gear; 427. Torsion spring; 428. Pulling rope; 429. Pulley assembly; 5. Connecting seat. Detailed implementation manners

[0029] Reference will now be made to example embodiments to discuss the subject matter described herein. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein, and the functions and arrangements of the elements discussed can be changed without departing from the scope of protection of the content of this specification. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described for some examples can also be combined in other examples.

[0030] As Figures 1 - 10 shown, this embodiment proposes a layered sampling device for soil and water loss monitoring, including: a mounting base 1, a collection component 2, a sampling component 3, and a power component 4. Among them, the mounting base 1 mainly serves to install and support, and can provide an installation space and a support carrier for the corresponding components. The collection component 2 is mainly used to store water samples collected at different water depths. The sampling component 3 is mainly used to collect water samples at different water depths. The power component 4 is mainly used to provide power for the sampling component 3 and drive the collection component 2 to act.

[0031] As Figures 3 - 5 shown, an installation groove 11 communicating with the outside at one side is formed in the mounting base 1, and a first through hole 111 is formed at the bottom of the installation groove 11. The installation groove 11 mainly serves to install, and the corresponding components can be installed in the installation groove 11. The first through hole 111 mainly serves to communicate, and can communicate the external space of the mounting base 1 with the internal space of the installation groove 11. Additionally, the installation groove 11 is set to a structure communicating with the outside at one side, that is, one side of the installation groove 11 is an open structure, so that it is convenient to install the corresponding components in the installation groove 11 from the opening, and it is also convenient to remove the corresponding components from the opening.

[0032] In addition, as Figure 4 , Figure 5 and Figure 7 shown, the collection component 2 is arranged in the installation groove 11. The collection component 2 includes a collection box 21, a rotating shaft 22, a plurality of partition plates 23, and a plurality of sealing components 24. The rotating shaft 22 is rotatably connected to the bottom of the installation groove 11. It should be noted that the outer contour structures of the mounting base 1, the installation groove 11, and the collection box 21 can all be cylindrical structures, and the outer circumferential wall of the collection box 21 is arranged to fit the inner circumferential wall of the installation groove 11, so that the inner circumferential wall of the installation groove 11 can support the outer circumferential wall of the collection box 21, thereby making the rotation of the collection box 21 more stable.

[0033] The center of the collection box 21 is fixedly connected to the rotating shaft 22. That is, the axis of the rotating shaft 22 can be collinear with the axis of the collection box 21. A plurality of partition plates 23 are fixedly connected inside the collection box 21 to divide the collection box 21 into a plurality of cavities 25, and a second through hole 251 is provided in each cavity 25. Specifically, the partition plate 23 can be a rectangular structure, and the length direction of the partition plate 23 can be arranged along the radial direction of the collection box 21, so that the space inside the collection box 21 can be divided into a plurality of cavities 25. In the axial direction of the collection box 21, the cross-sectional shape of each cavity 25 is triangular. Each cavity 25 is an independent space and can be used to store the collected water samples. The plurality of partition plates 23 can be distributed in a circular array about the axis of the collection box 21, so that the volume of each cavity 25 is the same, and thus the water storage capacity of each cavity 25 is more uniform. The second through hole 251 mainly plays a role of connection. A second through hole 251 is provided in each cavity 25, so that the external water sample can flow into the corresponding cavity 25 through the corresponding second through hole 251 for storage, thereby facilitating the classified storage of the water samples. The sealing assembly 24 is mainly used to prevent the water sample in the corresponding cavity 25 from flowing back. It should be noted that the collection box 21 includes a detachable cover plate. The setting of the cover plate can seal the cavity 25, and after the collection is completed, the cover plate can also be removed to facilitate the extraction of the water sample in the cavity 25.

[0034] Specifically, as Figure 5 and Figure 8 shown, the sealing assembly 24 is arranged in the cavity 25. The sealing assembly 24 includes a cutoff groove 241 and a cutoff plate 242. The cutoff groove 241 includes: a cutoff portion 2411 and an installation portion 2412 communicating with the cutoff portion 2411. The cutoff portion 2411 is concentric with the second through hole 251, and the diameter of the cutoff portion 2411 is larger than the diameter of the second through hole 251. The cutoff plate 242 includes a sealing portion 2421 and a rotating portion 2422 fixedly connected to the sealing portion 2421. The sealing portion 2421 is concentric with the second through hole 251, the diameter of the sealing portion 2421 is larger than the diameter of the second through hole 251, and the diameter of the sealing portion 2421 is smaller than the diameter of the cutoff portion 2411. The rotating portion 2422 is rotatably connected in the installation portion 2412, and the cutoff plate 242 selectively seals the second through hole 251.

[0035] It should be noted that both the intercepting part 2411 and the sealing part 2421 are cylindrical structures, which can be well adapted to the shape of the second through hole 251. The diameter of the sealing part 2421 is larger than that of the second through hole 251, so that the sealing part 2421 can completely seal the second through hole 251. The diameter of the sealing part 2421 is smaller than that of the intercepting part 2411 because the sealing part 2421 has a certain thickness, which facilitates the rotation of the sealing part 2421 out from the intercepting part 2411. Moreover, since the sealing part 2421 is arranged in the cavity 25, the intercepting part 2411 can limit the rotation of the sealing part 2421. Therefore, the sealing part 2421 can only rotate into the cavity 25 under the drive of the rotating part 2422, which can prevent the water sample in the cavity 25 from flowing out through the second through hole 251. It should be noted that the rotation range of the sealing part 2421 can be greater than 0° and less than 90°. The rotation angle greater than 0° is for the water sample to enter the cavity 25. If the rotation angle is greater than or equal to 90°, after the water sample collection is completed, the intercepting plate 242 may not be able to re-seal the corresponding second through hole 251. The setting of the angle range of the sealing part 2421 can be achieved by setting a limiting plate in the cavity 25 to limit the rotation angle of the sealing part 2421 into the cavity 25.

[0036] In addition, as Figure 2 and Figure 4 shown, the sampling assembly 3 includes: a fixed pipe 31, a first telescopic pipe 32, a second telescopic pipe 33, a pump body 34, and a sampling hose 35. One end of the fixed pipe 31 is fixedly connected to the mounting seat 1, and one end of the fixed pipe 31 wraps the first through hole 111 inside the fixed pipe 31. One end of the first telescopic pipe 32 extends into the fixed pipe 31 from the other end of the fixed pipe 31 and is slidably connected to the fixed pipe 31. One end of the second telescopic pipe 33 extends into the first telescopic pipe 32 from the other end of the first telescopic pipe 32 and is slidably connected to the first telescopic pipe 32. One end of the sampling hose 35 is connected to the other end of the second telescopic pipe 33. The other end of the sampling hose 35 passes through the first through hole 111 and is attached to the collection box 21. Multiple second through holes 251 are selectively communicated with the other end of the sampling hose 35. It should be noted that there is an interference fit between the first through hole 111 and the sampling hose 35, which can make the fit between the other end of the sampling hose 35 and the second through hole 251 more stable. The pump body 34 is connected to the sampling hose 35 to suck water into the sampling hose 35.

[0037] As an alternative embodiment, the sampling hose 35 located between the first through hole 111 and the second through hole 251 can be a rigid pipe, which can further improve the stability of the fit between the other end of the sampling hose 35 and the second through hole 251.

[0038] A plurality of second through holes 251 are selectively communicated with the other end of the sampling hose 35. That is to say, the second through holes 251 in each cavity 25 can be communicated with the other end of the sampling hose 35, or can not be communicated with the other end of the sampling hose 35. Specifically, when collecting water samples at different depths, the collected water samples can enter the sampling hose 35 through the sampling assembly 3 and the power assembly 4, and then drive the collection box 21 to rotate by driving the rotating shaft 22 to rotate, so that the second through holes 251 in different cavities 25 can be selectively communicated with the other end of the sampling hose 35, and then water samples at different depths can be stored in different cavities 25.

[0039] During use, in the initial state, the sealing part 2421 is located in the intercepting part 2411 to seal the second through hole 251. When the water sample enters the second through hole 251 from the sampling hose 35, the intercepting plate 242 will rotate towards the inside of the cavity 25 under the action of water pressure, so that the water sample can enter the inside of the cavity 25 from the second through hole 251 for storage. When the water quality sampling stops, the intercepting plate 242 will rotate reversely under the water pressure inside the cavity 25 and seal the corresponding second through hole 251, so that water leakage of the water sample in the cavity 25 can be reduced while water inlet is realized. Of course, the sealing assembly 24 can also be a check valve.

[0040] It should be noted that the other end of the sampling hose 35 is attached to the collection box 21, that is, the other end of the sampling hose 35 can be attached to the second through hole 251. In this way, the friction between the other end of the sampling hose 35 and the first through hole 111 is small, which can reduce the leakage of water samples from the gap between the other end of the sampling hose 35 and the second through hole 251, and at the same time reduce the friction on the collection box 21, so that the collection box 21 can rotate better. In addition, the axes of the fixed pipe 31, the first telescopic pipe 32 and the second telescopic pipe 33 are collinear and parallel to the axis of the mounting seat 1. Such a setting is more reasonable and convenient for the other end of the sampling hose 35 to cooperate with the second through hole 251.

[0041] During use, when the pump body 34 is started, driven by the pump body 34, the water sample will be sucked from one end of the sampling hose 35, and then enter the corresponding cavity 25 from the other end of the sampling hose 35 through the corresponding second through hole 251 for storage. When water samples at different depths need to be collected, since one end of the sampling hose 35 is connected to the other end of the second telescopic pipe 33, the distance between the second telescopic pipe 33 and the fixed pipe 31 can be adjusted by sliding, so that water samples at various depths can be collected, which is more convenient to use.

[0042] In addition, as Figure 1 and, Figure 2 and Figure 10As shown, the power assembly 4 includes a driving assembly 41 and a transmission assembly 42. The driving assembly 41 is used to drive the first telescopic tube 32 and the second telescopic tube 33 to move along their axial directions, and the transmission assembly 42 is used to transmit the movement of the second telescopic tube 33 to the rotating shaft 22 to drive the rotating shaft 22 to rotate.

[0043] Specifically, the driving assembly 41 includes a first cylinder 411, a second cylinder 412, a first connecting plate 413, and a second connecting plate 414. The first connecting plate 413 and the second connecting plate 414 are fixedly connected to the outer walls of the first telescopic tube 32 and the second telescopic tube 33, respectively. The fixed end of the first cylinder 411 is fixedly connected to the mounting seat 1, the telescopic end of the first cylinder 411 is fixedly connected to the first connecting plate 413, the fixed end of the second cylinder 412 is fixedly connected to the first connecting plate 413, and the telescopic end of the second cylinder 412 is fixedly connected to the second connecting plate 414. In this way, the distance between the other end of the first telescopic tube 32 and the other end of the fixed tube 31 can be adjusted by the first cylinder 411, and the distance between the other end of the second telescopic tube 33 and the other end of the first telescopic tube 32 can be adjusted by the second cylinder 412, and then the distance between one end of the sampling hose 35 and the fixed tube 31 can be adjusted, so as to facilitate the collection of water samples at different depths. It should be noted that the first cylinder 411 and the second cylinder 412 may be waterproof cylinders. Of course, a waterproof protective film or other suitable waterproof measures may be added to the first cylinder 411 and the second cylinder 412.

[0044] In addition, the transmission assembly 42 includes: two first mounting plates 421, a second mounting plate 422, a winding shaft 423, a transmission shaft 424, a first bevel gear 425, a second bevel gear 426, a torsion spring 427 and a pull rope 428. The two first mounting plates 421 and the second mounting plates 422 are both fixedly connected in the mounting groove 11. The two ends of the winding shaft 423 are respectively rotatably connected to the two first mounting plates 421. The transmission shaft 424 is rotatably connected to the second mounting plate 422. A pulley assembly 429 is transmission-connected between the winding shaft 423 and the transmission shaft 424. The two ends of the torsion spring 427 are respectively fixedly connected to any one of the first mounting plates 421 and the winding shaft 423. The first bevel gear 425 and the second bevel gear 426 are respectively fixedly connected to the transmission shaft 424 and the rotating shaft 22. The first bevel gear 425 and the second bevel gear 426 are adapted to each other. The two ends of the pull rope 428 are respectively fixedly connected to the winding shaft 423 and the second telescopic tube 33. It should be noted that, in the initial state, the pull rope 428 is in a taut state under the action of the torsion spring 427 , and the excess length of the pull rope 428 will be wound around the reel 423 .

[0045] During use, when the driving component 41 is activated to move the second telescopic tube 33 away from the fixed tube 31, the second telescopic tube 33 will drive the pull rope 428 to move together. The movement of the pull rope 428 will drive the winding shaft 423 to rotate, so as to release the excess length of the pull rope 428 to follow the second telescopic tube 33. While the winding shaft 423 rotates, the torsion spring 427 will rotate and store potential energy. Under the action of the torsion spring 427, the pull rope 428 can always maintain a taut state. The rotation of the winding shaft 423 can drive the transmission shaft 424 to rotate through the pulley assembly 429. The rotation of the transmission shaft 424 can drive the rotating shaft 22 to rotate through the cooperation of the first bevel gear 425 and the second bevel gear 426, so as to drive the collection box 21 to rotate, and further realize the selective communication and cooperation between the plurality of second through holes 251 and the other end of the sampling hose 35. That is to say, every time the pull rope 428 elongates a certain length, the collection box 21 can rotate a corresponding angle, so that the second through hole 251 in a certain cavity 25 is communicated and cooperated with the other end of the sampling hose 35, thus realizing the sampling work of water samples at different depths. When the second telescopic tube 33 is retracted, the pull rope 428 will be rewound onto the winding shaft 423 under the restoring force of the torsion spring 427, and the collection box 21 will also return to its original position.

[0046] In the specific use process, the tooth number ratio between the first bevel gear 425 and the second bevel gear 426, as well as the number of cavities 25, can be adjusted according to the actual working conditions to determine the number of water samples at different depths to be collected, and the use is relatively flexible.

[0047] As an alternative embodiment, as Figure 5 and Figure 10 shown, a sealing ring 351 with an annular structure is fixedly connected to the other end of the sampling hose 35. The sealing ring 351 is arranged in a fitting manner with the collection box 21. The diameter of the second through hole 251 is larger than the diameter of the sampling hose 35, and the diameter of the second through hole 251 is smaller than the outer diameter of the sealing ring 351. Among them, the sealing ring 351 mainly plays a sealing role. The sealing ring 351 is arranged in a fitting manner with the mounting seat 1, so that the gap between the sealing ring 351 and the mounting seat 1 can be reduced without affecting the rotation of the collection box 21. The diameter of the second through hole 251 is larger than the diameter of the sampling hose 35, so that the possible errors generated during the rotation of the collection box 21 can be compensated, and the sampling hose 35 can be better communicated with the second through hole 251. In addition, the diameter of the second through hole 251 is smaller than the diameter of the sealing ring 351, so that the sealing ring 351 can be used to seal the gap between the sampling hose 35 and the second through hole 251, reducing the leakage amount of water samples.

[0048] As an alternative embodiment, as Figure 2As shown, the first connecting plate 413 is fixedly connected to the middle position of the first telescopic tube 32, and an avoidance hole 321 is axially formed on the outer wall of the other end of the first telescopic tube 32. The first connecting plate 413 selectively slides within the avoidance hole 321. By fixedly connecting the first connecting plate 413 to the middle position of the first telescopic tube 32 and in combination with the setting of the avoidance hole 321, the first telescopic tube 32 can be better retracted into the interior of the fixed tube 31. The first connecting plate 413 selectively slides within the avoidance hole 321, that is, during the retraction process of the first telescopic tube 32, driven by the first cylinder 411, the first connecting plate 413 can drive the first telescopic tube 32 to retract through the avoidance hole 321. During the unfolding process, the first connecting plate 413 can also slide out of the avoidance hole 321 to drive the first telescopic tube 32 to unfold. The second connecting plate 414 is fixedly connected to the other end of the second telescopic tube 33. This can make the control of the second cylinder 412 on the other end of the second telescopic tube 33 more stable.

[0049] As an alternative embodiment, as Figure 4 and Figure 6 shown, a sealing seat 331 is fixedly connected to the other end of the second telescopic tube 33 to seal the other end of the second telescopic tube 33. One end of the sampling hose 35 passes through the sealing seat 331 and communicates with the outside. The pump body 34 is fixedly connected within the second telescopic tube 33 and fixedly connected to the sealing seat 331. The setting of the sealing seat 331 can prevent water from entering the interior of the second telescopic tube 33 from the other end, which is beneficial to protecting the internal environment of the second telescopic tube 33. It should be noted that the outer diameter of the first telescopic tube 32 is the same as the inner diameter of the fixed tube 31, and the outer diameter of the second telescopic tube 33 is the same as the inner diameter of the first telescopic tube 32. In this way, the mounting seat 1, the fixed tube 31, the first telescopic tube 32, and the second telescopic tube 33 can form a relatively sealed structure, thereby protecting the internal environments of the mounting seat 1, the fixed tube 31, the first telescopic tube 32, and the second telescopic tube 33. It should be noted that during the retraction and expansion process of the first telescopic tube 32, a part of it can always block the avoidance hole 321, which can reduce the inflow of water from the avoidance hole 321 into the interior of the fixed tube 31.

[0050] In addition, as Figure 4 and Figure 6As shown in the figure, the other end of the second telescopic pipe 33 is fixedly connected with an annular fixing seat 332, and the fixing seat 332 mainly serves for installation. An annular connecting ring 333 is arranged on the fixing seat 332. A plurality of arc-shaped blocking strips 334 are arranged at intervals in an annular array on the connecting ring 333, and the free ends of the plurality of arc-shaped blocking strips 334 are arranged close to each other. The plurality of arc-shaped blocking strips 334 are all fixedly connected with the connecting ring 333. It should be noted that the plurality of arc-shaped blocking strips 334 can wrap the sampling hose 35 at the other end of the second telescopic pipe 33, so as to block larger impurities such as rags and plastic bags, reduce the blockage of these impurities to the sampling hose 35, and enable the water sample to normally enter the sampling hose 35 through the gap between two adjacent arc-shaped blocking strips 334.

[0051] As an alternative embodiment, as Figure 6 shown in the figure, the connecting ring 333 is rotatably connected with the fixing seat 332. That is to say, the connecting ring 333 can rotate relative to the fixing seat 332. In actual working conditions, it may occur that a rag or a plastic bag is wound around the arc-shaped blocking strip 334. In this case, under the action of the flowing water, the connecting ring 333 and the arc-shaped blocking strip 334 can rotate relative to the fixing seat 332, which is beneficial for the arc-shaped blocking strip 334 to get rid of these impurities and realize the self-cleaning function.

[0052] It should be noted that the air sources of the first cylinder 411 and the second cylinder 412 and the power supply of the pump body 34 can all be installed outside the mounting seat 1.

[0053] As an alternative embodiment, a connecting seat 5 is fixedly connected to the mounting seat 1. The connecting seat 5 mainly serves for connection. In actual use, the layered sampling device in this application can be fixed to the hull by using the connecting seat 5, so as to facilitate the collection of water samples. It is also possible to respectively fix a vertical rod on both banks of the river, set a rope between the two vertical rods, and fix the layered sampling device in this application to the rope by using the connecting seat 5 for remote operation of sampling.

[0054] The above has described the embodiments of this embodiment, but this embodiment is not limited to the above specific implementation manners. The above specific implementation manners are only illustrative and not restrictive. Under the inspiration of this embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this embodiment.

Claims

1. A layered sampling device for soil and water loss monitoring, characterized in that, Including: A mounting base (1) with a mounting groove (11) formed inside thereof; A collection assembly (2) including a collection box (21) and a plurality of partition plates (23). The collection box (21) is rotatably connected inside the mounting groove (11). The plurality of partition plates (23) are arranged inside the collection box (21) to divide the collection box (21) into a plurality of cavities (25) for collecting water samples at different depths. A second through hole (251) is formed in each cavity (25), and a sealing assembly (24) is arranged in each second through hole (251); A sampling assembly (3) including a sampling hose (35) and a fixed pipe (31) connected to the mounting base (1). A first telescopic pipe (32) is slidably connected inside the fixed pipe (31), and a second telescopic pipe (33) is slidably connected inside the first telescopic pipe (32). The sampling hose (35) is used to selectively communicate the water sample with the plurality of second through holes (251); A power assembly (4) for providing power for the movement of the sampling assembly (3) and the collection box (21); The outer contour structures of the mounting base (1), the mounting groove (11), and the collection box (21) are all cylindrical structures, and the outer circumferential wall of the collection box (21) is arranged in contact with the inner circumferential wall of the mounting groove (11); A connecting seat is fixedly connected to the mounting base, and the connecting seat can be fixedly connected to the hull; The power assembly (4) includes a driving assembly (41) for driving the first telescopic pipe (32) and the second telescopic pipe (33) to move along their axial directions; The driving assembly (41) includes a first cylinder (411), a second cylinder (412), a first connecting plate (413), and a second connecting plate (414). The first connecting plate (413) and the second connecting plate (414) are respectively connected to the first telescopic pipe (32) and the second telescopic pipe (33). The fixed end of the first cylinder (411) is connected to the mounting base (1), the telescopic end of the first cylinder (411) is connected to the first connecting plate (413), the fixed end of the second cylinder (412) is connected to the first connecting plate (413), and the telescopic end of the second cylinder (412) is connected to the second connecting plate (414); A sealing ring (351) with an annular structure is arranged at one end of the sampling hose (35) close to the collection box (21). The sealing ring (351) is arranged in contact with the collection box (21). The diameter of the second through hole (251) is larger than the diameter of the sampling hose (35), and the diameter of the second through hole (251) is smaller than the outer diameter of the sealing ring (351); An annular fixing seat (332) is arranged on the outer wall of one end of the second telescopic tube (33) away from the fixing tube (31); an annular connecting ring (333) is arranged on the fixing seat (332); a plurality of arc-shaped retaining bars (334) are arranged in an annular array at intervals on the connecting ring (333); and the free ends of the plurality of arc-shaped retaining bars (334) are arranged close to each other; the connecting ring (333) is rotatably connected to the fixing seat (332).

2. The stratified sampling device for soil and water loss monitoring according to claim 1, characterized in that, The bottom of the collection box (21) is fixedly connected with a rotating shaft (22), and the free end of the rotating shaft (22) is rotatably connected to the bottom of the installation groove (11); The power assembly (4) further comprises: a transmission assembly (42), the transmission assembly (42) being used for transmitting the movement of the second telescopic tube (33) to the rotating shaft (22) so as to drive the rotating shaft (22) to rotate, the transmission assembly (42) comprising: two first mounting plates (421), a second mounting plate (422), a winding shaft (423), a transmission shaft (424), a first bevel gear (425), a second bevel gear (426), a torsion spring (427) and a pull rope (428), the two first mounting plates (421) and the second mounting plate (422) are both fixedly connected in the mounting groove (11), and the two ends of the winding shaft (423) are respectively rotatably connected to the two first mounting plates (421), The transmission shaft (424) is rotatably connected to the second mounting plate (422); a pulley assembly (429) is transmission-connected between the winding shaft (423) and the transmission shaft (424); two ends of the torsion spring (427) are respectively fixedly connected to any one of the first mounting plates (421) and the winding shaft (423); the first bevel gear (425) and the second bevel gear (426) are respectively fixedly connected to the transmission shaft (424) and the rotating shaft (22); the first bevel gear (425) and the second bevel gear (426) are matched with each other; and two ends of the pull rope (428) are respectively connected to the winding shaft (423) and the second telescopic tube (33).

3. The layered sampling device for soil and water loss monitoring according to claim 1, characterized in that, The first connecting plate (413) is connected to the middle position of the first telescopic tube (32), and an avoidance hole (321) is opened along the axial direction of the outer wall of the fixed tube (31) away from the mounting seat (1), and the first connecting plate (413) selectively slides in the avoidance hole (321), and the second connecting plate (414) is connected to the end of the second telescopic tube (33) away from the fixed tube (31).

4. The layered sampling device for soil and water loss monitoring according to claim 1, wherein, A sealing seat (331) is provided on the inner wall of the end of the second telescopic tube (33) away from the fixed tube (31) to seal the end of the second telescopic tube (33) away from the fixed tube (31); the end of the sampling hose (35) away from the collecting box (21) passes through the sealing seat (331) to communicate with the outside; a pump body (34) is provided on the sealing seat (331); and the pump body (34) is connected to the sampling hose (35).

5. A layered sampling device for soil and water loss monitoring according to claim 1, characterized in that, The sealing assembly (24) comprises: a cut-off groove (241) and a cut-off plate (242); The intercepting groove (241) includes: an intercepting portion (2411) and a mounting portion (2412) communicated with the intercepting portion (2411). The intercepting portion (2411) is concentric with the second through hole (251), and the diameter of the intercepting portion (2411) is greater than the diameter of the second through hole (251). The intercepting plate (242) includes: a sealing portion (2421) and a rotating portion (2422) connected to the sealing portion (2421). The sealing portion (2421) is concentric with the second through hole (251), the diameter of the sealing portion (2421) is greater than the diameter of the second through hole (251), and the diameter of the sealing portion (2421) is less than the diameter of the intercepting portion (2411). The rotating portion (2422) is rotatably connected in the mounting portion (2412), and the intercepting plate (242) selectively seals the second through hole (251).

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