Soil stratified sampler

Abstract

The utility model discloses a soil stratified sampler which comprises a connecting pipe, the sampling head is of a bottomless cylindrical structure with an inner cavity, the top of the sampling head is connected with the connecting pipe, and a second through hole is formed in the top of the sampling head; the holding part is connected with the connecting pipe; the plurality of second lug bosses are annularly arranged on the inner wall of one end of the opening of the sampling head; according to the soil stratified sampler provided by the utility model, the second through holes are formed in the top of the sampling head, so that when the soil stratified sampler is applied to paddy field or high-moisture soil sampling, water entering the inner cavity of the soil stratified sampler can be discharged through the plurality of second through holes; the soil remained in the inner cavity of the sampling head is relatively dry, and the columnar soil with a more complete shape can be obtained; by arranging the holding part, a user can lift the soil stratified sampler more conveniently.

Description

Technical Field

[0001] This utility model relates to the field of soil samplers, and in particular to a soil stratification sampler. Background Technology

[0002] Existing stratified samplers, when sampling paddy field soil or moist soil, often result in the sampling head being filled with water before being filled with soil due to the high soil moisture content. The water remains inside the stratified sampler, resulting in insufficient adhesion between the moist soil and the inner wall of the sampling head. Consequently, when the operator removes the soil stratified sampler from the soil, the soil column detaches directly from the sampling head, making it difficult to obtain a well-formed soil column and affecting subsequent analysis results. Utility Model Content

[0003] The purpose of this invention is to provide a soil stratification sampler to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: First, this utility model provides a soil stratification sampler, comprising:

[0005] Connecting pipe;

[0006] The sampling head is a bottomless cylindrical structure with an inner cavity. The top of the sampling head is connected to the connecting tube, and the top of the sampling head is provided with a second through hole.

[0007] A gripping part, which is connected to the connecting tube;

[0008] The second protrusion is arranged in a ring on the inner wall of one end of the sampling head opening.

[0009] Compared to traditional soil stratification samplers, the soil stratification sampler provided by this invention features a second through-hole at the top of the sampling head. This design allows for better water flow into the sampling head's inner cavity when sampling paddy fields or soils with high moisture content, as the sampler is vertically inserted into the soil. Water then exits through the second through-hole. Furthermore, the location of the second through-hole at the top of the sampling head reduces backflow of water that has already overflowed, resulting in drier soil remaining in the inner cavity. Additionally, a second protrusion at the bottom of the sampling head increases the adhesion between the moist soil and the sampling head, leading to more complete columnar soil samples. The connecting tube enhances usability and facilitates the connection of other functional components. A grip allows the user to easily lift the soil stratification sampler from the soil. This invention is used for soil stratification sampling in paddy fields or moist soils.

[0010] As an extension of the above solution, the second protrusion is cylindrical. Setting the second protrusion as a cylinder increases the adhesion between the moist soil and the inner wall of the sampling head, and also facilitates processing.

[0011] As an extension of the above scheme, the soil stratification sampler also includes:

[0012] A push plate is disposed inside the sampling head and its shape is adapted to the inner cavity of the sampling head. The push plate is provided with several third through holes, and a first protrusion is provided on the side of the push plate facing the inner side of the top of the sampling head.

[0013] Push handle;

[0014] A push rod passes through the connecting tube and the sampling head, one end of the push rod is connected to the push plate, and the other end of the push rod is connected to the push handle;

[0015] A first baffle is connected to the push rod and is disposed inside the connecting pipe;

[0016] A spring is passed through by the push rod, and both ends of the spring abut against the top of the sampling head and the first baffle, respectively.

[0017] This design creates a channel between the push plate and the inner wall of the top of the sampling head. Water entering the inner cavity of the sampling head can enter the channel through several third through holes and then exit through the second through hole on the sampling head. The user can push the push handle to move the push rod and push plate, pushing the soil to be sampled out of the sampling head. Compared with the traditional soil stratification sampler that uses tapping to sample, this method is simpler, and the resulting columnar soil is more complete. This reduces the probability of soil mixing between layers when extracting soil and improves the accuracy of the analysis results. By placing the spring between the first baffle and the top of the sampling head, a reset structure can be formed inside the connecting tube, allowing the push rod to automatically reset and maintain the relative position of the push plate and the sampling head unchanged. Combined with the channel formed between the push plate and the inner wall of the top of the sampling head, after the water in the inner cavity of the sampling head is discharged, water remains in the channel. When the user needs to pull out the soil stratification sampler, because the inside of the sampling head is filled with soil, the water remaining in the channel cannot flow back immediately. Under the action of the spring, the push plate has a continuous force towards the top of the sampling head, making the water remaining in the channel temporarily act as a piston, making it difficult for external water to flow back into the sampling head. Because a certain degree of vacuum is formed between the push plate and the soil inside the sampling head, the spring can maintain the vacuum state inside the sampling head when the user pulls out the soil sampling device, so that the columnar soil inside the sampling head can be completely removed from the soil.

[0018] As an extension of the above solution, the soil stratification sampler also includes a foot pedal connected to the connecting pipe. By providing the foot pedal, users with less strength can also use their feet to insert the soil stratification sampler into the soil, reducing the intensity of hand labor and the risk of injury.

[0019] As an extension of the above solution, the first protrusion includes at least a set of symmetrically arranged columns. This arrangement ensures optimal drainage performance of the channel formed by the push plate and the inner side of the top of the sampling head, thereby guaranteeing the integrity of the columnar soil sample taken from the sampling head.

[0020] As an extension of the above solution, the pusher plate has an annular groove on its side wall, and a rubber ring is connected to the annular groove. The rubber ring improves the airtightness between the pusher plate and the inner cavity of the sampling head, enhancing the adsorption effect and allowing for more complete extraction of sampled soil when sampling paddy field soil.

[0021] As an extension of the above scheme, the second through-hole is annularly distributed at the top of the sampling head. This arrangement further improves the drainage effect and adsorption capacity of the soil stratification sampler, ensuring the integrity of the columnar soil sample within the sampling head.

[0022] As an extension of the above solution, the sampling head includes a detachably connected first tube and a first top. The first tube is tubular, and the first top is a bottomless cylinder. By designing the sampling head as a split type, the sampling head of the soil stratification sampler can be quickly replaced. By replacing the first tube, the sampling depth of the sampling head can be increased, resulting in better applicability. This design also improves the replaceability and ease of disassembly of the sampling head. On the other hand, users can also obtain soil samples by disassembling the sampling head, which provides greater convenience.

[0023] As an extension of the above solution, the spring's stroke h1 is less than the distance h2 between the push plate and the bottom of the sampling head. By setting a stroke limit, it can be ensured that the push plate will not be pushed out of the sampling head, thus ensuring the stability of the overall structure.

[0024] As an extension of the above solution, at least one set of symmetrical toothed protrusions are connected to the side wall at the bottom of the sampling head in a direction away from the top of the sampling head. Compared with the spiked tube design of general soil stratification samplers, this design can improve the soil stratification sampler's ability to sample hard soil or frozen soil. When sampling frozen soil or hard soil, the soil stratification sampler can be drilled into the soil by rotating it, while traditional soil stratification samplers can only be obtained by hammering. The soil stratification sampler provided by this utility model has a better performance.

[0025] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0026] This utility model of soil stratification sampler can more conveniently sample paddy field soil and moist soil. Compared with traditional soil stratification samplers, it can more easily push out the sampled soil. When using this utility model of soil stratification sampler, it is less likely to mix up soil from different layers when taking out the soil sample to be analyzed, which can improve the accuracy of soil sample analysis. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0028] Figure 1 This is a schematic diagram of the overall soil stratification sampler provided by this utility model;

[0029] Figure 2 This is a schematic diagram of the soil stratification sampler provided by this utility model;

[0030] Figure 3 This is a partial cross-sectional view of the soil stratification sampler provided by this utility model;

[0031] Figure 4 This is a schematic diagram of the sampling head provided in the embodiment;

[0032] Figure 5 This is a cross-sectional diagram of the sampling head provided in the embodiment.

[0033] In the attached diagram: 100, connecting pipe; 101, second protrusion; 200, sampling head; 201, through hole; 202, second through hole; 203, first tube; 204, first top; 205, toothed protrusion; 206, threaded column; 300, push plate; 301, third through hole; 302, first protrusion; 303, push handle; 304, push rod; 305, annular groove; 306, rubber ring; 400, first baffle; 401, second baffle; 500, spring; 600, foot pedal; 601, connecting part; 602, foot pedal; 800, grip; 801, connecting ring; 802, grip. Detailed Implementation

[0034] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0035] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0037] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0038] Reference Figures 1 to 5 The following are some embodiments of the soil stratification sampler of this utility model.

[0039] like Figure 1 and Figure 5 As shown, in some embodiments, a soil stratification sampler includes:

[0040] Connecting pipe 100;

[0041] The sampling head 200 is a bottomless cylindrical structure with an inner cavity. The top of the sampling head 200 is connected to the connecting pipe 100. The top of the sampling head 200 is provided with a second through hole 202.

[0042] A gripping part 800 is connected to the connecting tube 100;

[0043] The second protrusion 101 is arranged in a ring on the inner wall of one end of the opening of the sampling head 200.

[0044] The gripping part 800 includes a handle 802 and a connecting ring 801. The handle 802 is connected to the connecting ring 801, and the connecting ring 801 is connected to the connecting tube 100. The connecting tube 100 has internal threads at both ends. The sampling head 200 has a threaded post 206 at the center of its top. The threaded post 206 has a through hole 201 at its center. The connecting tube 100 and the threaded post 206 are detachably connected.

[0045] To further increase the adhesion between the moist soil and the inner wall of the sampling head, enabling the soil stratification sampler to extract the soil sample more completely, the second protrusion 101 is configured as a cylinder. Specifically, several threaded holes can be drilled in a ring on the outer wall of the sampling head 200, and bolts of appropriate length can be screwed into them.

[0046] like Figure 3 As shown, in some embodiments, to facilitate the extraction of sampled soil, the soil stratification sampler may also include:

[0047] Push plate 300, the push plate 300 is disposed inside the sampling head 200 and its shape is adapted to the inner cavity of the sampling head 200. The push plate 300 is provided with a plurality of third through holes 301. The side of the push plate 300 facing the inner side of the top of the sampling head 200 is provided with a first protrusion 302.

[0048] Push handle 303;

[0049] A push rod 304 passes through the connecting pipe 100 and the through hole 201. One end of the push rod 304 is connected to the push plate 300, and the other end of the push rod 304 is connected to the push handle 303.

[0050] A first baffle 400 is connected to the push rod 304 and is disposed inside the connecting pipe 100.

[0051] A spring 500 is passed through by the push rod 304, and both ends of the spring 500 abut against the top of the sampling head 200 and the first baffle 400, respectively.

[0052] The push plate 300 has a threaded hole at its center, the third through hole 301 is distributed in a ring on the push plate 300, the push rod 304 is a round rod with threads at both ends, the push handle 303 has a threaded hole and is a round tube in the shape of a straight line, the first baffle 400 is circular in shape and has a threaded hole at its center that matches the push rod 304.

[0053] The first protrusion 302 includes at least a set of symmetrically arranged columns. The columns can be formed by machining two symmetrical threaded holes on the push plate 300 and then screwing bolts into them. Furthermore, the bolt ends can be arranged to protrude from the bottom of the push plate 300 to increase the adhesion between the push plate 300 and the sampled soil, so that the sampled soil can be taken out more completely.

[0054] In order to improve the airtightness between the push plate and the inner cavity of the sampling head and enhance the adsorption effect, and to push out the sampled soil more completely when sampling paddy field soil, the side wall of the push plate 300 is provided with an annular groove 305, and a rubber ring 306 is connected to the annular groove 305.

[0055] When needed, first pass the push rod 304 through the sampling head 200 and screw it into the push plate 300, adjusting the distance so that the connection between the push rod 304 and the push plate 300 is flush with the push plate 300. Then, put the spring 500 into the push rod 304, and screw the first baffle 400 into the other end of the push rod 304 for adaptive adjustment, so that the two ends of the spring 500 abut against the threaded post 206 and the first baffle 400 respectively. Then, tighten the connecting tube 100 to the sampling head 200, and then tighten the push handle 303 to the push rod 304. The soil stratification sampler of this solution has the advantage of easy disassembly and assembly, and can be disassembled and assembled as a whole.

[0056] Working principle: When sampling paddy field soil, the user holds the grip 800 and vertically inserts the soil stratification sampler into the paddy field. Water from the paddy field first enters the inner cavity of the sampling head 200, then flows along the third through hole 301 on the push plate 300 into the channel separated by the first protrusion between the push plate 300 and the inner top of the sampling head 200, and then exits through the second through hole 202. When the sampling head 200 is inserted to the required depth, the user holds the grip 800 and, using the sampling head 200 as a fulcrum, swings the soil stratification sampler to reduce the adhesion between the outer wall of the sampling head 200 and the moist soil, and then lifts the soil stratification sampler. When it is necessary to extract columnar soil samples, the user holds the grip 800 and pushes the push handle 303 towards the sampling head 200. At this time, the push plate 300 is also moved, thereby pushing the columnar soil out of the sampling head 200.

[0057] When the user needs to remove the soil stratification sampler, because the sampling head 200 is filled with soil, the water remaining in the channel cannot flow back immediately. Under the action of the spring 500, the push plate 300 has a continuous force towards the top of the sampling head 200, which makes the water remaining in the channel act as a piston for a short time, making it difficult for external water to flow back into the sampling head 200. Since a certain degree of vacuum is formed between the push plate 300 and the soil inside the sampling head 200, the spring 500 can maintain the vacuum state inside the sampling head 200 when the user pulls out the soil sampling device, so that the columnar soil inside the sampling head 200 can be completely removed from the soil.

[0058] like Figure 1As shown, in some embodiments, to facilitate users with less strength, a foot pedal 600 connected to the connecting pipe 100 can be provided, allowing the user to press the sampling head 200 into the soil by stepping on the foot pedal 600 and using their own weight, thus reducing the intensity of hand labor. The foot pedal 600 can be set in a straight line, including a connecting part 601 that is detachably connected to the connecting pipe 100. The foot pedal 600 can be set in a way that two symmetrical foot pedals 602 are connected to the connecting part, or only one foot pedal 602 can be connected to the connecting part 601.

[0059] In some embodiments, a second baffle 401 may be provided, which is slidably connected to the push rod 304 and threadedly connected to the connecting pipe 100, to provide an additional support point to reduce the swaying of the push rod 304 during sliding.

[0060] In some embodiments, in order to ensure that the push plate 300 is not completely pushed out of the sampling head 300 during use, the stroke h1 of the spring 500 can be set to be less than the distance h2 between the push plate 300 and the bottom of the sampling head 200.

[0061] like Figure 4 and Figure 5 As shown, in some embodiments, the sampling head 200 also includes a first tube 203 and a first top 204. The outer wall of the first tube 203 and the inner wall of the first top 204 are respectively provided with matching threads. The first tube 203 is tubular, and the first top 204 is bottomless. By configuring the sampling head 200 as a split type, the sampling head 200 of the soil stratification sampler can be quickly replaced. By replacing the first tube 203, the sampling depth of the sampling head 200 can be increased, resulting in better applicability. This configuration also improves the replaceability and ease of disassembly of the sampling head 200. On the other hand, users can also obtain sampled soil by disassembling the sampling head 200, which provides greater convenience.

[0062] In some embodiments, at least one set of symmetrical toothed protrusions 205 are connected to the sidewall at the bottom of the sampling head 200 in a direction away from the top of the sampling head 200. Compared with the spiked tube design of a typical soil stratification sampler, this design can improve the soil stratification sampler's ability to sample hard soil or frozen soil. When sampling frozen soil or hard soil, the soil stratification sampler can be drilled into the soil by rotating it, while traditional soil stratification samplers can only be inserted into hard soil by hammering.

[0063] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A soil corer for taking a layered sample of soil, characterised in that: The utility model relates to a sampling device, comprising: a connecting pipe (100); a sampling head (200) which is a bottomless cylinder structure with an inner cavity, the top of the sampling head (200) is connected with the connecting pipe (100), and the top of the sampling head (200) is provided with a second through hole (202); a holding part (800) which is connected with the connecting pipe (100); a plurality of second protruding parts (101) which are annularly arranged on the inner wall of the open end of the sampling head (200).

2. The soil corer of claim 1, wherein: The second protruding part (101) is a cylinder.

3. The soil coring device of claim 1, wherein: Further comprising: a push handle (303); a push plate (300) which is arranged in the sampling head (200) and is shaped to match the inner cavity of the sampling head (200), the push plate (300) is provided with a plurality of third through holes (301), one side of the push plate (300) facing the inside of the top of the sampling head (200) is provided with a first protruding part (302); a push rod (304) which passes through the connecting pipe (100) and the sampling head (200), one end of the push rod (304) is connected with the push plate (300), and the other end of the push rod (304) is connected with the push handle (303); a first baffle (400) which is connected with the push rod (304) and is arranged in the connecting pipe (100); a spring (500) which is penetrated by the push rod (304), and the two ends of the spring (500) respectively abut against the top of the sampling head (200) and the first baffle (400).

4. The soil coring device of claim 3, wherein: Further comprising a connecting part (601) and at least one foot pedal part (600), the foot pedal part (600) is connected to the connecting pipe (100) through the connecting part (601).

5. The soil coring device of claim 3, wherein: The first protruding part (302) comprises at least one set of symmetrically arranged cylinders.

6. The soil coring device of claim 3, wherein: The side wall of the push plate (300) is provided with an annular groove (305) connected with a rubber ring (306).

7. The soil coring device of claim 3, wherein: The second through holes (202) are annularly distributed on the top of the sampling head (200).

8. The soil coring device of claim 3, wherein: The sampling head (200) comprises a first pipe part (203) and a first top part (204) which are detachably connected, the first pipe part (203) is tubular, and the first top part (204) is bottomless and cylindrical.

9. The soil coring device of claim 3, wherein: The stroke h1 of the spring (500) is smaller than the distance h2 between the push plate (300) and the bottom of the sampling head (200).

10. The soil coring device of any one of claims 1 to 9, wherein: At least one set of symmetrically arranged tooth-shaped protrusions (205) are connected to the side wall of the bottom of the sampling head (200) in a direction away from the top of the sampling head (200).

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