Layered sampling device for monitoring water and soil loss

Abstract

The invention relates to the technical field of water quality sampling, and discloses a stratified sampling device for water and soil loss monitoring, which comprises a mounting seat, a collecting assembly, a sampling assembly and a power assembly, a mounting groove is formed in the mounting seat; the collecting assembly comprises a collecting box, a plurality of partition plates and a plurality of sealing assemblies, the multiple partition plates divide the collecting box into a plurality of cavities, each cavity is selectively communicated with the corresponding second through hole, and one sealing assembly is arranged in each second through hole; the sampling assembly comprises a fixed pipe, a first telescopic pipe, a second telescopic pipe and a sampling hose, one end of the sampling hose is connected with the other end of the second telescopic pipe, and the other end of the sampling hose is communicated with the collecting box; the power assembly is used for providing power for movement of the sampling assembly and the collecting box. Water samples at different depths can be continuously conveyed into different cavities to be stored, the water samples do not need to be taken out of the water surface to be stored after each time of collection, and use is more convenient.

Description

Technical Field

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

[0002] Soil erosion refers to the phenomenon that due to natural or human factors, rainwater cannot be absorbed locally, flows down and washes the soil, causing the loss of water and soil at the same time. The main reasons are large ground slope, improper land use, destruction of ground vegetation, unreasonable farming techniques, loose soil, deforestation, overgrazing, etc. The hazards of soil erosion are mainly manifested in: the soil cultivation layer is eroded and destroyed, causing the fertility of the land to deplete; silting up rivers, channels, and reservoirs, reducing the benefits of water conservancy projects, and even causing floods and droughts, seriously affecting industrial and agricultural production; soil erosion poses a serious threat to agricultural production in mountainous areas and downstream rivers.

[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 by appropriate methods such as acid-base method or screening method to determine the sediment content in water samples at different depths. When sampling water samples at different depths, existing measurement tools usually first take water samples from a certain depth, then take them out of the water surface for storage, and then use the same method to collect water samples from other depths. This operation is cumbersome and inconvenient to use. To this end, we propose a stratified sampling device for soil and water loss monitoring. Summary of the invention

[0004] The invention provides a stratified sampling device for soil and water loss monitoring, which solves the technical problem of complicated operation of collecting water samples at different depths in the related art.

[0005] The present invention provides a stratified sampling device for soil and water loss monitoring, comprising: a mounting seat, which is provided with a mounting groove inside; a collecting component, which comprises: a collecting box and a plurality of partitions, wherein the collecting box is rotatably connected in the mounting groove; the plurality of partitions are arranged in the collecting box to divide the collecting box into a plurality of cavities for collecting water samples of different depths, each cavity is provided with a second through hole, and each second through hole is provided with a sealing component; a sampling component, which comprises: a sampling hose and a fixed tube connected to the mounting seat, a first telescopic tube is slidably connected in the fixed tube, a second telescopic tube is slidably connected in the first telescopic tube, and the sampling hose is used for selectively connecting the water sample with the plurality of second through holes; a power component, which is used for providing power for the movement of the sampling component and the collecting box.

[0006] As a further improvement of the present invention, the outer contour structures of the mounting seat, the mounting groove and the collection box are all cylindrical structures, and the outer circumferential wall of the collection box is arranged to fit the inner circumferential wall of the mounting groove.

[0007] As a further improvement of the present invention, the power assembly includes: a driving assembly, which is used to drive 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 seat, 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 mounting groove; the power assembly also includes: a transmission assembly, which is used to transmit the movement of the second telescopic tube to the rotating shaft to drive the rotating shaft to rotate, and 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 pull rope, the two first mounting plates and the second mounting plates are fixedly connected in the mounting 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 transmission-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, and the two ends of the pull rope are respectively connected to the winding shaft and the second telescopic tube.

[0009] As a further improvement of the present invention, a sealing ring with an annular structure is provided at one end of the sampling hose close to the collecting box, and the sealing ring is arranged to fit the collecting box. The diameter of the second through hole is larger than the diameter of the sampling hose, and the diameter of the second through hole is 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 opened along the axial direction of the outer wall of the fixed tube away from the mounting seat, and the first connecting plate selectively slides in the avoidance hole, and 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, and the end of the sampling hose away from the collecting box passes through the sealing seat and is connected to 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: an intercepting groove and an intercepting plate; the intercepting groove includes: an intercepting portion and a mounting portion connected to the intercepting portion, the intercepting portion is concentrically arranged with the second through hole, and the diameter of the intercepting portion is larger than the diameter of the second through hole; the intercepting plate includes: a sealing portion and a rotating portion connected to the sealing portion, the sealing portion is concentrically arranged 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 intercepting portion, the rotating portion is rotatably connected in the mounting portion, and the intercepting 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 one end of the second telescopic tube away from the fixed tube, an annular connecting ring is provided on the fixing seat, a plurality of arcuate baffles are provided in an annular array at intervals on the connecting ring, and the free ends of the plurality of arcuate baffles 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. The beneficial effects of the present invention are: 1. The present invention provides a fixed tube, a first telescopic tube and a second telescopic tube that can slide relatively, and connects one end of the sampling hose to the second telescopic tube. In this way, the length of the entire device can be adjusted by adjusting the distance between the second telescopic tube and the fixed tube, so that water samples of various depths can be sampled. In addition, the space in the collection box is divided into multiple cavities by multiple partitions, and the transmission assembly is used to control the rotation of the collection box through the movement of the second telescopic tube, so that water samples of different depths can be transported to different cavities for storage. It can be operated continuously underwater without having to take out the water surface for separate storage after each collection, which is more convenient to use.

[0015] 2. The present invention can effectively reduce the blockage of the sampling hose caused by large flexible impurities by arranging multiple arc-shaped baffles at the other end of the second telescopic tube. In addition, the connecting ring is arranged as a rotatable structure, which is conducive to removing the flexible impurities wrapped around the arc-shaped baffles through water flow, thereby achieving self-cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of a layered sampling device for soil and water loss monitoring according to an embodiment of the present invention; Figure 2 It 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; Figure 3 It is a schematic diagram of a first main cross-sectional structure of a layered sampling device for soil and water loss monitoring according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a second main cross-sectional structure of a layered sampling device for soil and water loss monitoring according to an embodiment of the present invention; Figure 5 yes Figure 4 The enlarged view of point A in the middle; Figure 6 yes Figure 4 The enlarged view of point B in the middle; Figure 7 It is a schematic diagram of a first top-view cross-sectional structure of a layered sampling device for soil and water loss monitoring according to an embodiment of the present invention; Figure 8 yes Figure 7 Enlarged view of point C in the middle; Fig. 9 It is a schematic diagram of a second top-view cross-sectional structure of a layered sampling device for soil and water loss monitoring according to an embodiment of the present invention; Fig.10 It is a partial three-dimensional cross-sectional structural schematic diagram of a layered sampling device for soil and water loss monitoring according to an embodiment of the present invention. In the figure: 1, mounting seat; 11, mounting groove; 111, first through hole; 2, collecting assembly; 21, collecting box; 22, rotating shaft; 23, partition; 24, sealing assembly; 241, intercepting groove; 2411, intercepting part; 2412, mounting part; 242, intercepting plate; 2421, sealing part; 2422, rotating part; 25, cavity; 251, second through hole; 3, sampling assembly; 31, fixed tube; 32, first telescopic tube; 321, avoidance hole; 33, second telescopic tube; 331, sealing seat; 332, fixed seat; 33 3. Connecting ring; 334. Arc-shaped baffle; 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. Reel; 424. Transmission shaft; 425. First bevel gear; 426. Second bevel gear; 427. Torsion spring; 428. Pull rope; 429. Pulley assembly; 5. Connecting seat. DETAILED DESCRIPTION

[0017] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0018] like Figure 1-Figure 10 As shown, this embodiment proposes a stratified sampling device for soil and water loss monitoring, including: a mounting base 1, a collecting component 2, a sampling component 3 and a power component 4. Among them, the mounting base 1 is mainly used for installation and support, and can provide installation space and support carriers for corresponding components. The collecting component 2 is mainly used to store the collected water samples of different water depths. The sampling component 3 is mainly used to collect water samples of different water depths. The power component 4 is mainly used to provide power for the sampling component 3 and drive the collecting component 2 to move.

[0019] like Figure 3-Figure 5 As shown, a mounting groove 11 is provided in the mounting seat 1, one side of which is connected to the outside, and a first through hole 111 is provided at the bottom of the mounting groove 11. The mounting groove 11 mainly serves the function of installation, and the corresponding components can be installed in the mounting groove 11. The first through hole 111 mainly serves the function of communication, and the external space of the mounting seat 1 can be connected with the internal space of the mounting groove 11. In addition, the mounting groove 11 is set as a structure in which one side is connected to the outside, that is, one side of the mounting groove 11 is an open structure, so that it is convenient to install the corresponding components in the mounting groove 11 from the opening, and it is also convenient to remove the corresponding components from the opening.

[0020] In addition, if Figure 4 , Figure 5 and Figure 7 As shown, the collecting assembly 2 is arranged in the mounting groove 11, and the collecting assembly 2 includes a collecting box 21, a rotating shaft 22, a plurality of partitions 23 and a plurality of sealing assemblies 24, and the rotating shaft 22 is rotatably connected to the bottom of the mounting groove 11. It should be noted that the outer contour structures of the mounting seat 1, the mounting groove 11 and the collecting box 21 can all be cylindrical structures, and the outer circumferential wall of the collecting box 21 is arranged to fit the inner circumferential wall of the mounting groove 11, so that the inner circumferential wall of the mounting groove 11 can be used to support the outer circumferential wall of the collecting box 21, so that the rotation of the collecting box 21 can be more stable.

[0021] 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 arranged in line with the axis of the collection box 21. A plurality of partitions 23 are fixedly connected in 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 23 can be a rectangular structure, and the length direction of the partition 23 can be arranged along the radial direction of the collection box 21, so that the space in 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 a triangle. Each cavity 25 is an independent space and can be used to store the collected water samples. The plurality of partitions 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, so that the water storage capacity of each cavity 25 can be more uniform. The second through hole 251 mainly plays a role of communication. 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 classification and preservation of the water sample. 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, which 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.

[0022] Specifically, Figure 5 and Figure 8 As shown, the sealing assembly 24 is arranged in the cavity 25, and the sealing assembly 24 includes a cut-off groove 241 and a cut-off plate 242. The cut-off groove 241 includes: a cut-off portion 2411 and a mounting portion 2412 connected to the cut-off portion 2411, the cut-off portion 2411 is arranged concentrically with the second through hole 251, and the diameter of the cut-off portion 2411 is greater than the diameter of the second through hole 251. The cut-off plate 242 includes a sealing portion 2421 and a rotating portion 2422 fixedly connected to the sealing portion 2421, the sealing portion 2421 is arranged concentrically 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 smaller than the diameter of the cut-off portion 2411, the rotating portion 2422 is rotatably connected in the mounting portion 2412, and the cut-off plate 242 selectively seals the second through hole 251.

[0023] It should be noted that the intercepting portion 2411 and the sealing portion 2421 are both cylindrical structures, so that they can be well adapted to the shape of the second through hole 251. The diameter of the sealing portion 2421 is larger than the diameter of the second through hole 251, so that the sealing portion 2421 can completely seal the second through hole 251. The diameter of the sealing portion 2421 is smaller than the diameter of the intercepting portion 2411, because the sealing portion 2421 has a certain thickness, so that the sealing portion 2421 is easy to rotate out from the intercepting portion 2411, and because the sealing portion 2421 is arranged in the cavity 25, the intercepting portion 2411 can limit the rotation of the sealing portion 2421, so the sealing portion 2421 can only rotate toward the inside of the cavity 25 under the drive of the rotating portion 2422, so that the water sample in the cavity 25 can be prevented from flowing out from the second through hole 251. It should be noted that the rotation range of the sealing portion 2421 can be greater than 0° and less than 90°. The rotation angle is greater than 0° so that the water sample can enter the cavity 25. If the rotation angle is greater than or equal to 90°, the intercepting plate 242 may not be able to re-seal the corresponding second through hole 251 after the water sample is collected. The angle range of the sealing portion 2421 can be set by setting a limit plate in the cavity 25, and the limit plate is used to limit the rotation angle of the sealing portion 2421 into the cavity 25.

[0024] In addition, if Figure 2 and Figure 4 As shown, the sampling assembly 3 includes: a fixed tube 31, a first telescopic tube 32, a second telescopic tube 33, a pump body 34 and a sampling hose 35. One end of the fixed tube 31 is fixedly connected to the mounting seat 1, and one end of the fixed tube 31 wraps the first through hole 111 inside the fixed tube 31. One end of the first telescopic tube 32 extends from the other end of the fixed tube 31 into the fixed tube 31 and is slidably connected to the fixed tube 31, one end of the second telescopic tube 33 extends from the other end of the first telescopic tube 32 into the first telescopic tube 32 and is slidably connected to the first telescopic tube 32, one end of the sampling hose 35 is connected to the other end of the second telescopic tube 33, the other end of the sampling hose 35 passes through the first through hole 111 and fits with the collection box 21, and a plurality of second through holes 251 are selectively connected to the other end of the sampling hose 35. It should be noted that the first through hole 111 and the sampling hose 35 are interference fit, so that the fit between the other end of the sampling hose 35 and the second through hole 251 can be more stable. The pump body 34 is connected to the sampling hose 35 to suck water into the sampling hose 35 .

[0025] As an optional embodiment, the sampling hose 35 located at the first through hole 111 and the second through hole 251 can be made of a hard 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.

[0026] The plurality of second through holes 251 are selectively connected to the other end of the sampling hose 35, that is, the second through hole 251 in each cavity 25 may be connected to the other end of the sampling hose 35, or may not be connected to the other end of the sampling hose 35. Specifically, when collecting water samples of different depths, the collected water samples can enter the sampling hose 35 through the sampling assembly 3 and the power assembly 4, and then the collection box 21 is driven to rotate by rotating the driving shaft 22, so that the second through holes 251 in different cavities 25 can be selected to be connected to the other end of the sampling hose 35, and then the water samples of different depths can be stored in different cavities 25.

[0027] When in use, in the initial state, the sealing portion 2421 is in the intercepting portion 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 toward the inside of the cavity 25 under the action of water pressure, so that the water sample can enter the cavity 25 from the second through hole 251 for storage. When the water quality sampling is stopped, the intercepting plate 242 will rotate in the opposite direction under the water pressure inside the cavity 25 and seal the corresponding second through hole 251, so that the water can enter and reduce the leakage of the water sample in the cavity 25. Of course, the sealing component 24 can also use a one-way valve.

[0028] It should be noted that the other end of the sampling hose 35 fits with the collection box 21, that is, the other end of the sampling hose 35 can fit with the second through hole 251, so that 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, while reducing the friction on the collection box 21, so that the collection box 21 can be better rotated. In addition, the axes of the fixed tube 31, the first telescopic tube 32, and the second telescopic tube 33 are all collinear and parallel to the axis of the mounting seat 1. This arrangement is more reasonable and facilitates the cooperation between the other end of the sampling hose 35 and the second through hole 251.

[0029] When in use, the pump body 34 is started, and driven by the pump body 34, the water sample is sucked from one end of the sampling hose 35, and then enters the corresponding cavity 25 from the other end of the sampling hose 35 through the corresponding second through hole 251 for storage. When it is necessary to collect water samples of different depths, since one end of the sampling hose 35 is connected to the other end of the second telescopic tube 33, the distance between the second telescopic tube 33 and the fixed tube 31 can be adjusted by sliding, so that water samples of various depths can be collected, which is more convenient to use.

[0030] In addition, if Figure 1 and, Figure 2 and Fig.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.

[0031] 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.

[0032] 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 .

[0033] When in use, when the driving assembly 41 is started to move the second telescopic tube 33 to the side away from the fixed tube 31, the second telescopic tube 33 will drive the drawstring 428 to move together, and the movement of the drawstring 428 will drive the reel 423 to rotate so as to release the excess length of the drawstring 428 to move along with the second telescopic tube 33. When the reel 423 rotates, the torsion spring 427 will rotate to store potential energy, and the drawstring 428 can always remain in a taut state under the action of the torsion spring 427. The rotation of the reel 423 can drive the transmission shaft 424 to rotate through the pulley assembly 429, and 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, thereby driving the collection box 21 to rotate, and then realizing 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 is extended to a certain length, the collection box 21 can rotate to a corresponding angle, so that the second through hole 251 in a certain cavity 25 is connected and matched with the other end of the sampling hose 35, so that water samples at different depths can be collected. When the second telescopic tube 33 is recovered, the pull rope 428 will be rewound onto the reel 423 under the restoring force of the torsion spring 427, and the collection box 21 will also return to its original position.

[0034] In specific use, the gear ratio between the first bevel gear 425 and the second bevel gear 426 and the number of cavities 25 can be adjusted according to actual working conditions to determine the number of water samples at different depths that need to be collected, which is more flexible to use.

[0035] As an optional embodiment, Figure 5 and Fig.10 As shown, the other end of the sampling hose 35 is fixedly connected with a sealing ring 351 of an annular structure, and the sealing ring 351 is arranged in close 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. Among them, the sealing ring 351 mainly plays a sealing role. The sealing ring 351 is arranged in close contact 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 error that may occur when the collection box 21 rotates can be compensated, so that the sampling hose 35 can be better connected 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, thereby reducing the leakage of water samples.

[0036] As an optional embodiment, Figure 2As shown, the first connecting plate 413 is fixedly connected to the middle position of the first telescopic tube 32, and the outer wall of the other end of the first telescopic tube 32 is provided with an avoidance hole 321 along its axial direction, and the first connecting plate 413 selectively slides in the avoidance hole 321. The first connecting plate 413 is fixedly connected to the middle position of the first telescopic tube 32, and the avoidance hole 321 is provided, so that the first telescopic tube 32 can be better retracted to the inside of the fixed tube 31. The first connecting plate 413 selectively slides in the avoidance hole 321, that is, during the process of the first telescopic tube 32 retracting, 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, and during the process of unfolding, 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. In this way, the control of the other end of the second telescopic tube 33 by the second cylinder 412 can be more stable.

[0037] As an optional embodiment, Figure 4 and Figure 6 As shown, the other end of the second telescopic tube 33 is fixedly connected with a sealing seat 331 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, and the pump body 34 is fixedly connected in the second telescopic tube 33 and fixedly connected with the sealing seat 331. The setting of the sealing seat 331 can prevent water from entering the inside of the second telescopic tube 33 from the other end of the second telescopic tube 33, which is beneficial to protect 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, so that 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, so that the internal environment of the mounting seat 1, the fixed tube 31, the first telescopic tube 32 and the second telescopic tube 33 can be protected. It should be noted that, during the process of the first telescopic tube 32 being retracted and extended, a portion of the first telescopic tube 32 can always block the avoidance hole 321 , so as to reduce the water from flowing from the avoidance hole 321 into the interior of the fixed tube 31 .

[0038] In addition, if Figure 4 and Figure 6As shown, the other end of the second telescopic tube 33 is fixedly connected to an annular fixing seat 332, and the fixing seat 332 mainly serves as an installation. An annular connecting ring 333 is provided on the fixing seat 332, and a plurality of arc-shaped baffles 334 are arranged in an annular array at intervals on the connecting ring 333, and the free ends of the plurality of arc-shaped baffles 334 are arranged close to each other. The plurality of arc-shaped baffles 334 are all fixedly connected to the connecting ring 333. It should be noted that the plurality of arc-shaped baffles 334 can wrap the sampling hose 35 located at the other end of the second telescopic tube 33, so that larger impurities, such as rags, plastic bags, etc., can be blocked, and the situation that these impurities cause blockage to the sampling hose 35 is reduced, so that the water sample can normally enter the sampling hose 35 from the gap between two adjacent arc-shaped baffles 334.

[0039] As an optional embodiment, Figure 6 As shown, the connecting ring 333 is rotatably connected to the fixing seat 332. That is, the connecting ring 333 can rotate relative to the fixing seat 332. In actual working conditions, a rag or a plastic bag may be wrapped around the arc-shaped baffle 334. In this way, under the action of the flowing water, the connecting ring 333 and the arc-shaped baffle 334 can rotate relative to the fixing seat 332, so that the arc-shaped baffle 334 can get rid of these impurities and realize the self-cleaning function.

[0040] It should be noted that the air sources of the first air cylinder 411 and the second air cylinder 412 and the power supply of the pump body 34 can all be installed outside the mounting base 1 .

[0041] As an optional embodiment, a connecting seat 5 is fixedly connected to the mounting seat 1. The connecting seat 5 mainly serves as a connection. In actual use, the connecting seat 5 can be used to fix the stratified sampling device in the present application to the hull, so as to facilitate the collection of water samples. A vertical pole can also be fixed on each side of the river, a rope is set between the two vertical poles, and the stratified sampling device in the present application is fixed to the rope by the connecting seat 5, so as to remotely operate the sampling.

[0042] The above describes an embodiment of the present embodiment, but the present embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms, all of which are within the protection of the present embodiment.

Claims

1. A stratified sampling device for soil and water loss monitoring, characterized in that: include: A mounting seat (1) having a mounting groove (11) formed therein; A collection assembly (2), comprising: a collection box (21) and a plurality of partitions (23), wherein the collection box (21) is rotatably connected to the mounting groove (11); the plurality of partitions (23) are arranged in the collection box (21) to divide the collection box (21) into a plurality of cavities (25) for collecting water samples of different depths, each cavity (25) is provided with a second through hole (251), and each second through hole (251) is provided with a sealing assembly (24); A sampling assembly (3) comprises: a sampling hose (35) and a fixed tube (31) connected to a mounting seat (1); a first telescopic tube (32) is slidably connected inside the fixed tube (31); a second telescopic tube (33) is slidably connected inside the first telescopic tube (32); the sampling hose (35) is used to selectively connect a water sample to a plurality of second through holes (251); A power assembly (4) is used to provide power for the movement of the sampling assembly (3) and the collection box (21).

2. A stratified sampling device for soil and water loss monitoring according to claim 1, characterized in that: The outer contour structures of the mounting seat (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 to fit the inner circumferential wall of the mounting groove (11).

3. A stratified sampling device for soil and water loss monitoring according to claim 2, characterized in that: The power assembly (4) comprises: a driving assembly (41), the driving assembly (41) being used to drive the first telescopic tube (32) and the second telescopic tube (33) to move along their axial directions; The driving assembly (41) comprises: 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 tube (32) and the second telescopic tube (33); the fixed end of the first cylinder (411) is connected to the mounting seat (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).

4. A stratified sampling device for soil and water loss monitoring according to claim 3, 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).

5. A stratified sampling device for soil and water loss monitoring according to claim 4, characterized in that: A sealing ring (351) with an annular structure is provided at one end of the sampling hose (35) close to the collection box (21); the sealing ring (351) is arranged to fit 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).

6. A stratified sampling device for soil and water loss monitoring according to claim 3, 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).

7. A stratified sampling device for soil and water loss monitoring according to claim 3, characterized in that: 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).

8. The stratified sampling device for soil and water loss monitoring according to claim 5, characterized in that: The sealing assembly (24) comprises: a cut-off groove (241) and a cut-off plate (242); The intercepting groove (241) comprises: an intercepting portion (2411) and a mounting portion (2412) connected to the intercepting portion (2411); the intercepting portion (2411) is arranged concentrically 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 shutoff plate (242) comprises: a sealing portion (2421) and a rotating portion (2422) connected to the sealing portion (2421); the sealing portion (2421) is concentrically arranged 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 shutoff portion (2411); the rotating portion (2422) is rotatably connected in the mounting portion (2412); and the shutoff plate (242) selectively seals the second through hole (251).

9. The stratified sampling device for soil and water loss monitoring according to claim 1, characterized in that: 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.

10. A stratified sampling device for soil and water loss monitoring according to claim 9, characterized in that: The connecting ring (333) is rotatably connected to the fixing seat (332).

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