CN219714797U - Sediment content sampling device for water and soil conservation monitoring - Google Patents

Abstract

The utility model discloses a sediment content sampling device for water and soil conservation monitoring, which comprises a carrying device and a sampling mechanism arranged on the carrying device, wherein the carrying device is provided with a sampling device; the sampling mechanism is used for excavating and sampling soil and transporting the soil into the screening mechanism; the screening mechanism outputs at least four rotational degrees of freedom in a synchronous driving mode; according to the utility model, through mechanical linkage and mutual coordination among the carrying device, the sampling mechanism and the screening mechanism, in the practical application process, through automatic operation of the carrying device and the sampling mechanism, errors possibly existing in manual sampling are avoided, and the accuracy and repeatability of sampling are improved; the soil surface can be comprehensively known by circularly sampling different positions of the environment and the coverage area is wide; through the screening of automatic screening mechanism, can judge silt content more accurately to can screen the soil particle of different particle size as required, improve the precision of sampling.

Description

Sediment content sampling device for water and soil conservation monitoring

Technical Field

The utility model relates to the technical field of soil and water conservation, in particular to a sediment content sampling device for soil and water conservation monitoring.

Background

In the traditional soil and water conservation field, judging and sampling are required to be carried out according to the sediment content of a soil sample; and then can assist the staff to judge the following technical index or environmental parameter that the soil and water kept:

1. evaluating soil erosion risk: silt is particulate matter in the soil and is easily washed by water flow, resulting in soil erosion. Therefore, the detection of the sediment content of the soil surface can evaluate the soil erosion risk of the area, and provide a basis for taking measures for preventing soil erosion.

2. Monitoring water pollution: the soil with high sediment content easily generates runoff under the weather conditions such as rainfall, and the sediment flows into the water body, so that the water quality pollution is aggravated. Therefore, the water pollution condition can be monitored by detecting the sediment content of the soil surface, and a scientific basis is provided for water environment protection.

And (3) designing soil and water conservation measures: the soil with high sediment content needs to take different prevention measures when water and soil conservation measures are implemented. For example, the terrain is remedied before construction, a solid sand blocking net is installed, and vegetation coverage is adopted. Therefore, detecting the sediment content of the soil surface can provide necessary data support for the design of soil and water conservation measures.

In the conventional art, the specific steps of the above sampling include: according to the different sampling areas, a proper sampling device is selected, and a soil sample is collected on the sampling point. The collected soil samples are treated to remove impurities such as massive soil, plant residues and the like; the soil sample is then passed through a set of sieves of varying thickness to screen out soil particles of varying particle size to determine the sediment content. And weighing the soil particles after the powder sieve, and calculating mass percentages of different particle sizes to determine the sediment content.

The conventional sampling method has the following technical defects:

1. the accuracy of the sampling points is insufficient. Because the selection of sampling points mainly depends on manual sampling at different points, the relevance of soil content among a plurality of sampling points is difficult to ensure and judge;

2. the sampling efficiency is low; all operation modes of traditional sampling need manual sampling, and the efficiency is low.

3. The sampling amount is insufficient. Due to the limitations of manual operations, the amount of soil sample taken is typically small and may not be sufficient to perform some of the experiments required for analysis.

For this purpose, a sediment content sampling device for soil and water conservation monitoring is proposed.

Disclosure of Invention

Accordingly, it is desirable to provide a sediment content sampling device for soil and water conservation monitoring, to solve or alleviate the technical problems of the prior art, and to provide at least one advantageous option;

the technical scheme of the embodiment of the utility model is realized as follows: the sediment content sampling device for water and soil conservation monitoring comprises a carrying device and a sampling mechanism arranged on the carrying device; the sampling mechanism is used for excavating and sampling soil and transporting the soil into the screening mechanism; the screening mechanism outputs at least four rotational degrees of freedom in a synchronous driving mode, each rotational degree of freedom drives one screen disc, and samples are screened in a grading mode through screen parts with different mesh numbers.

In the above embodiment, the following embodiments are described: the sampling mechanism and the screening mechanism are in linkage relation, a direct matching mode is adopted between the sampling mechanism and the screening mechanism, the specific driving track, the specific direction, the specific angle and other parameters are specific, and the mode selection assembly is realized based on the stroke amount of the degree of freedom by a worker, and the linkage between the degree of freedom and the control of an external controller are realized.

Wherein in one embodiment: the sampling mechanism comprises a first rack and a chain wheel assembly arranged in the first rack; the first rack is fixedly connected to the carrying device; the chain wheel assembly is driven by a first power piece, and a soil digging bucket is arranged on a chain link of the chain wheel assembly; each soil penetrating bucket circularly samples soil based on the circular driving of the chain wheel assembly.

In the above embodiment, the following embodiments are described: through the mechanical linkage and mutual coordination between the chain wheel assembly and the soil digging bucket, the soil digging bucket is driven to excavate and sample soil in a multi-end linkage and coordination mode by circularly driving the soil digging bucket;

in the above embodiment, the following embodiments are described: the driving mode described above is not limited thereto; as a preferred technical solution, it may also be preferred to select the following types: the chain wheel assembly comprises a driving chain wheel and a driven chain wheel which are arranged in the first frame, and the chain links meshed with the driving chain wheel and the driven chain wheel; the drive sprocket is driven by the first power member.

Wherein in one embodiment: the screening mechanism comprises a second frame and a rotating module arranged on the second frame; four screen trays are arranged in an array along the central axis direction, and each screen tray outputs one rotation degree of freedom;

in the above embodiment, the following embodiments are described: the four rotary degrees of freedom are synchronously output to carry out multi-end linkage and the form of cooperation of the four rotary degrees of freedom through mechanical linkage and mutual cooperation among the four screen plates and the screen parts, so that the screen plates are driven to carry out powder screening operation on soil;

in the above embodiment, the following embodiments are described: the driving mode described above is not limited thereto; as a preferred technical solution, it may also be preferred to select the following types: the screen disc is fixedly connected with the screen disc through a connecting rod, the screen disc at the lowest part is in rotary fit with the second frame, and the rotary module drives the screen disc to rotate; each screen tray is provided with a screen section, wherein the screen section of the uppermost screen tray is largest and thereby decreases to the smallest screen section of the lowermost penultimate screen tray.

In the above embodiment, the following embodiments are described: through mechanical linkage and mutual cooperation between a plurality of sieve trays and the sieve portion, carry out multiport linkage and form of cooperation through four rotation degrees of freedom of synchronous output, carry out hierarchical powder sieve between a plurality of sieve trays and the sieve tray, realize that different compositions in the soil sample carry out powder sieve operation.

Wherein in one embodiment: the rotating module comprises a gear ring assembly, and the gear ring assembly is arranged on the screen disc at the lowest part. The gear ring assembly comprises a gear and a gear ring which are meshed with each other; the gear ring is fixedly connected to the screen disc at the lowest part, and the gear is driven by the second power piece.

In the above embodiment, the following embodiments are described: the first power piece and the second power piece are preferably servo motors, and the servo driving system is matched with an external controller to realize appointed driving of the elements, realize linkage control between the sampling mechanism and the screening mechanism and meet related driving and adjusting operation requirements.

In the above embodiment, the following embodiments are described: a mode of driving operation of the structural member to which it is adapted for achieving the above-described degree of rotational freedom; the initial output point of the degree of freedom of the rotation driving can be connected with a bearing and an external relatively fixed structure so as to realize supporting.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, through mechanical linkage and mutual coordination among the carrying device, the sampling mechanism and the screening mechanism, in the practical application process, through automatic operation of the carrying device and the sampling mechanism, errors and uncertainties possibly existing in manual sampling are avoided, and the accuracy and repeatability of sampling are improved; the soil surface can be comprehensively known by circularly sampling different positions of the environment and the coverage area is wide; the sediment content can be accurately judged through screening of an automatic screening mechanism, soil particles with different particle sizes can be screened according to the needs, and the sampling precision is improved;

2. according to the utility model, through mechanical linkage and mutual coordination among the carrying device, the sampling mechanism and the screening mechanism, unmanned automatic sampling operation is realized in the whole process of practical application, the automatic sampling and screening process can greatly shorten the sampling period, and the working efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a perspective view of another embodiment of the present utility model;

FIG. 3 is a schematic perspective view of a sampling mechanism according to the present utility model;

FIG. 4 is a perspective view of a screening apparatus according to the present utility model;

FIG. 5 is a perspective view of a screening mechanism according to another embodiment of the present utility model;

fig. 6 is an enlarged perspective view of the area a of fig. 5 according to the present utility model.

Reference numerals: 1. a carrying device; 2. a control cabinet; 3. a sampling mechanism; 301. a first frame; 302. a first power member; 303. a sprocket assembly; 304. digging a soil bucket; 4. a screening mechanism; 401. a second frame; 402. a second power member; 403. a ring gear assembly; 404. a screen tray; 405. a screen section; 406. and a connecting rod.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. This utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below;

it should be noted that the terms "first," "second," "symmetric," "array," and the like are used merely for distinguishing between description and location descriptions, and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of features indicated. Thus, a feature defining "first," "symmetry," or the like, may explicitly or implicitly include one or more such feature; also, where certain features are not limited in number by words such as "two," "three," etc., it should be noted that the feature likewise pertains to the explicit or implicit inclusion of one or more feature quantities;

in the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature; meanwhile, all axial descriptions such as X-axis, Y-axis, Z-axis, one end of X-axis, the other end of Y-axis, or the other end of Z-axis are based on a cartesian coordinate system.

In the present utility model, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "secured," and the like are to be construed broadly; for example, the connection can be fixed connection, detachable connection or integrated molding; the connection may be mechanical, direct, welded, indirect via an intermediate medium, internal communication between two elements, or interaction between two elements. The specific meaning of the terms described above in the present utility model will be understood by those skilled in the art from the specification and drawings in combination with specific cases.

In the prior art, the conventional sampling method has the following technical defects:

1. the accuracy of the sampling points is insufficient. Because the selection of sampling points mainly depends on manual sampling at different points, the relevance of soil content among a plurality of sampling points is difficult to ensure and judge;

2. the sampling efficiency is low; all operation modes of traditional sampling need manual sampling, and the efficiency is low.

3. The sampling amount is insufficient. Due to the limitations of manual operations, the amount of soil sample taken is typically small and may not be sufficient to perform some of the experiments required for analysis.

For this reason, referring to fig. 1-6, the present utility model provides a technical solution to solve the above technical problems: a sediment content sampling device for water and soil conservation monitoring;

the device comprises a carrying device 1 and a sampling mechanism 3 arranged on the carrying device 1; the sampling mechanism 3 is used for excavating and sampling soil and transporting the soil into the screening mechanism 4; the screening mechanism 4 outputs at least four rotational degrees of freedom in the form of synchronous driving, each of which drives one screen plate 404, and the samples are classified by the screen sections 405 of different mesh numbers.

The sampling mechanism 3 and the screening mechanism 4 are in linkage relation, are in a direct matching mode, have specific driving track, azimuth, angle and other parameters, and are based on the stroke amount selection assembly of the degree of freedom by a worker, and the linkage between the degree of freedom and the control of an external controller.

In this embodiment, the sampling mechanism 3 and the screening mechanism 4 are main functional mechanisms in the device provided in this embodiment; on the basis of the above mechanism, it is arranged on the carrying device 1; specifically, the carrying device 1 is used as a standard supporting structure and a conveyer of the whole device, provides a foundation for matching with the external environment for the device, and can be matched with external staff to carry out maintenance, adjustment, assembly of related parts and other conventional mechanical maintenance operations;

specifically, on the premise that the sampling mechanism 3 samples soil in an external environment and the screening mechanism 4 performs powder screening operation on a sampled soil sample, the carrying device 1 is driven at a constant speed under the environment to be subjected to water and soil conservation detection, so that the powder screening operation of the large-area circulating sampling and screening mechanism 4 of the sampling mechanism 3 can be realized;

it can be understood that the selection of the sampling point adoption mode in the conventional technology mainly depends on manual sampling at different points, so that the relevance of soil content among a plurality of sampling points is difficult to ensure and judge; by the above operation of the present embodiment, the above situation can be solved, that is: through evenly sampling and powder screening the continuous soil area, the relevance of the soil content of the current environment of auxiliary staff judgment is realized.

In the scheme, all electrical components of the whole device are powered by a storage battery arranged in the carrying device 1; specifically, the electric elements of the whole device are in conventional electrical connection with the output port of the storage battery through a relay, a transformer, a button panel and other devices, so that the energy supply requirements of all the electric elements of the device are met.

Preferably, the carrying device 1 is a crawler or a remote control vehicle.

Specifically, a control cabinet 2 is further arranged outside the crawler or the remote control vehicle, a controller and a related conventional electric appliance connecting device are installed in the control cabinet 2, and the controller is used for connecting and controlling all electric appliance elements of the whole device to drive according to a preset program as a preset value and a drive mode; it should be noted that the driving mode corresponds to output parameters such as start-stop time interval, rotation speed, power and the like between related electrical components, and meets the requirement that related electrical components drive related mechanical devices to operate according to the functions described in the related electrical components.

Preferably, the controller is a PLC controller, and the control requirement is completed through a ladder diagram, a sequence function diagram, a function block diagram, an instruction list or a structural text and other conventional PLC control modes; it should be noted that the output parameters such as the operation start-stop time interval, the rotation speed, the power and the like of the electric element or other power elements driven by the programming are not limited; specifically, the control of the relevant drive is adjusted according to the actual use requirement.

Preferably, the PLC is also provided with a wireless transmitting module and a wireless receiving module, and the wireless transmitting module sends out an instruction signal of working or suspending to the wireless receiving module through a medium; when necessary, a worker can input an instruction to the wireless transceiver module through the wireless remote control device so as to remotely control the PLC controller, and further, all electric elements of the device are remotely controlled to drive according to a related driving mode; meanwhile, the wireless transceiver module can also transmit the relevant coefficients or other information detected by the relevant sensing elements or the servo driving element system in the device to the background staff.

In some embodiments of the present utility model, please refer to fig. 3 in combination:

the sampling mechanism 3 includes a first frame 301 and a sprocket assembly 303 mounted within the first frame 301; the first rack 301 is fixedly connected to the carrying device 1; the chain wheel assembly 303 is driven by the first power piece 302, and a soil digging bucket 304 is arranged on a chain link of the chain wheel assembly 303; each soil bucket 304 cyclically samples soil based on the cyclical drive of the sprocket assembly 303.

In this scheme, through the mechanical linkage and mutual coordination between the sprocket assembly 303 and the soil digging bucket 304, the soil digging bucket 304 is driven to dig and sample soil by circularly driving the soil digging bucket 304 to carry out multi-end linkage and coordination mode;

specifically, the sprocket assembly 303 includes a driving sprocket, a driven sprocket, and links engaged with the driving sprocket, the driven sprocket, which are mounted in the first frame 301; the drive sprocket is driven by the first power member 302.

Specifically, the first power member 302 drives the driving sprocket to engage and run a ring body formed by a plurality of chain links in a butt joint manner, and the soil is excavated and sampled by the soil excavating bucket 304 on each chain link; based on the form shown in fig. 2, the earth-boring bucket 304 is inserted into the ground, the earth is dug, the earth is lifted and transported, and the earth sample is poured into the uppermost sieve tray 404 by gravity; the mutual operation relation between the sampling mechanism 3 and the screening mechanism 4 is realized.

In some embodiments of the present utility model, please refer to fig. 4-6 in combination: the screening mechanism 4 comprises a second frame 401 and a rotating module arranged on the second frame 401; four sieve trays 404 are arranged in an array along the central axis direction, and each sieve tray 404 outputs one rotation degree of freedom; the rotary module comprises a gear ring assembly 403, the gear ring assembly 403 being mounted to the lowermost screen tray 404. The ring gear assembly 403 includes intermeshing gears and a ring gear; the gear ring is fixedly connected to the lowermost screen plate 404 and the gear is driven by the second power member 402.

In this scheme, through mechanical linkage and mutual cooperation between the four screen plates 404 and the screen part 405, the screen plates 404 are driven to perform powder screening operation on the soil by synchronously outputting four rotational degrees of freedom to perform multi-end linkage and cooperation;

wherein the specific form of each sieve tray 404 varies; specifically, the screen plate 404 is fixedly connected with the screen plate 404 through a connecting rod 406, and the screen plate 404 at the lowest part is in rotary fit with the second frame 401 and is driven to rotate by the rotary module; each screen tray 404 is provided with a screen portion 405, wherein the screen portion 405 of the uppermost screen tray 404 is largest and thereby decreases to the smallest screen portion 405 of the lowermost penultimate screen tray 404.

In this scheme, through the mechanical linkage and the mutual cooperation between a plurality of sieve trays 404 and sieve portion 405 of four, carry out multiterminal linkage and the form of cooperation through four rotation degrees of freedom of synchronous output, carry out the classifying powder sieve between a plurality of sieve trays 404 and the sieve tray 404, realize that different compositions in the soil sample carry out the powder sieve operation.

Specifically, the second power member 402 drives the gear to mesh with the gear ring, and when the gear ring rotates, the bottommost screen disc 404 is driven to rotate; because the screen plates 404 are fixedly connected with each other through the connecting rod 406, each screen plate 404 can synchronously rotate;

when rotating, the screen part 405 of each screen plate 404 is arranged according to the mesh number, so that when the soil digging bucket 304 dumps the soil sample in the screen plate 404 at the uppermost part, the soil and impurities thereof are continuously screened by means of gravity;

illustratively, the screen portion 405 of the uppermost screen tray 404 may be set to 10-20 mesh, the screen portion 405 of the second screen tray 404 may be set to 30-40 mesh, and the screen portion 405 of the third screen tray 404 may be set to 70-120 mesh;

meanwhile, according to the particle size and weight of the sediment, soil impurities can be classified into the following categories for screening:

the uppermost screen tray 404: large granule impurities such as massive soil, stones and the like are screened.

A second screen tray 404: screening larger silt, plant root systems and the like.

Third sieve tray 404: screening smaller silt and plant residues.

The lowermost screen tray 404: the screen portion 405 is not provided, and is responsible for receiving fine sand and mud.

Preferably, the screening efficiency is optimized: in order to improve the screening efficiency, a vibrator can be added on the second frame 401 to accelerate the screening speed of impurities;

it should be noted that the screening parameters, such as amplitude, screening time, etc., may be adjusted according to the actual situation, so as to achieve the best screening effect.

Through the scheme, the automatic powder sieve for the soil sample can be realized, the sediment content can be rapidly and accurately measured, and impurities can be removed at the same time, so that reliable data support is provided for the research of soil and water conservation technology.

It should be noted that screening large-particle impurities such as massive soil and stones, larger silt, plant root system and other impurities does not mean that the impurities need to be discarded; the staff can judge the proportion of the impurities and the sediment so as to judge the technical parameters of actual soil and water conservation;

preferably, the first power member 302 and the second power member 402 are preferably servo motors, and the servo driving system is matched with an external controller to realize the appointed driving of the elements, so that the linkage control between the sampling mechanism 3 and the screening mechanism 4 is realized, and the related driving and adjusting operation requirements are met.

The technical features of the above-described embodiments may be combined in any manner, and for brevity, all of the possible combinations of the technical features of the above-described embodiments may not be described, however, they should be considered as the scope of the present description as long as there is no contradiction between the combinations of the technical features.

Examples

In order to make the above-described embodiments of the present utility model more comprehensible, embodiments accompanied with the present utility model are described in detail by way of example. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, so that the utility model is not limited to the embodiments disclosed below.

The present embodiment is based on the relevant principles described in the above detailed description, where exemplary applications are:

s1, determining the environmental area of water and soil conservation detection sampling;

s2, the sampling mechanism 3 samples soil in an external environment, and the screening mechanism 4 performs powder screening operation on the sampled soil sample; based on the area, the carrying device 1 runs under the area at a constant speed, so that the powder screening operation of the large-area circulating sampling and screening mechanism 4 of the sampling mechanism 3 is realized;

s3, the sampling mechanism 3 works, wherein a soil digging bucket 304 is inserted into the ground, soil is dug, lifted and transported, and soil samples are poured into an uppermost screen disc 404 by means of gravity; realizing the mutual operation relation between the sampling mechanism 3 and the screening mechanism 4;

s4, the screening mechanism 4 continuously screens soil and impurities thereof by means of gravity.

By the operation mode of the embodiment, errors and uncertainties possibly existing in manual sampling are avoided, and the accuracy and repeatability of sampling are improved; the soil surface can be comprehensively known by circularly sampling different positions of the environment and the coverage area is wide; through the screening of automatic screening mechanism, can judge silt content more accurately to can screen the soil particle of different particle size as required, improve the precision of sampling.

The above examples merely illustrate embodiments of the utility model that are specific and detailed for the relevant practical applications, but are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (7)

1. The sediment content sampling device for water and soil conservation monitoring is characterized by comprising a carrying device (1) and a sampling mechanism (3) arranged on the carrying device (1);

the sampling mechanism (3) is used for excavating and sampling soil and transporting the soil into the screening mechanism (4);

the screening mechanism (4) outputs at least four rotational degrees of freedom in a synchronous driving mode, each rotational degree of freedom drives one screen disc (404), and samples are screened in a grading mode through screen parts (405) with different meshes.

2. A sediment content sampling device for soil and water conservation monitoring as defined in claim 1, wherein: the sampling mechanism (3) comprises a first rack (301) and a chain wheel assembly (303) arranged in the first rack (301);

the first rack (301) is fixedly connected to the carrying device (1);

the chain wheel assembly (303) is driven by a first power piece (302), and a soil digging bucket (304) is arranged on a chain link of the chain wheel assembly (303); each of the soil scoops (304) cyclically samples soil based on the cyclical drive of the sprocket assembly (303).

3. A sediment content sampling device for soil and water conservation monitoring as claimed in claim 2, wherein: the sprocket assembly (303) comprises a driving sprocket, a driven sprocket, and the chain links meshed with the driving sprocket and the driven sprocket, which are installed in the first frame (301);

the drive sprocket is driven by the first power member (302).

4. A sediment content sampling device for soil and water conservation monitoring according to any one of claims 1 to 3, wherein: the screening mechanism (4) comprises a second frame (401) and a rotating module arranged on the second frame (401);

four screen plates (404) are arranged in an array along the central axis direction, and each screen plate (404) outputs one rotation degree of freedom.

5. The sediment sampling device for soil and water conservation monitoring as set forth in claim 4, wherein: the screen disc (404) is fixedly connected with the screen disc (404) through a connecting rod (406), the screen disc (404) at the lowest part is in rotary fit with the second frame (401), and the screen disc (404) is driven to rotate by the rotary module;

-each of the screen trays (404) is provided with a screen portion (405), wherein the screen portion (405) of the uppermost screen tray (404) is largest and in this way the screen portion (405) of the second last screen tray (404) decreasing to the lowermost screen tray is smallest; the lowermost screen tray (404) is not provided with the screen portion (405).

6. A sediment content sampling device for soil and water conservation monitoring as defined in claim 5, wherein: the rotation module comprises a gear ring assembly (403), wherein the gear ring assembly (403) is arranged on the lowest screen disc (404).

7. A sediment content sampling device for soil and water conservation monitoring as defined in claim 6, wherein: the ring gear assembly (403) comprises a gear and a ring gear that are intermeshed; the gear ring is fixedly connected to the lowermost screen disc (404), and the gear is driven by a second power member (402).