Soil collection equipment capable of stratified sampling

Abstract

The utility model relates to the technical field of soil sampling, in particular to soil collecting equipment capable of stratified sampling, which comprises a sampling barrel, a stratified positioning unit, a positioning plate and scale marks, a push plate used for pushing out soil in the sampling barrel is slidably connected in the sampling barrel, a push rod is arranged on the push plate, and the scale marks are arranged on the positioning plate. The axial length of the push rod is equal to the axial length of the sampling barrel, the layering positioning units are arranged on the push rod, each layering positioning unit comprises two positioning pieces with the adjustable distance, and the distance between the two positioning pieces is the depth of a soil layer needing to be sampled. According to the utility model, whether the required soil layer sampling depth is reached or not is judged through the contact between the positioning piece and the sampling barrel, so that a soil sample at each depth can be more accurately obtained, and the use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of soil sampling, in particular to a soil collection device capable of stratified sampling. Background Art

[0002] By analyzing soil samples, the contents of various nutrients in the soil, such as nitrogen, phosphorus, potassium, organic matter, etc., can be measured, and the contents of various pollutants in the soil can be detected to timely discover soil pollution problems and take corresponding treatment measures. Since the soil has an obvious stratified structure in the vertical direction and the soils at different layers have differences in physical, chemical and biological properties, stratified sampling can more comprehensively understand the vertical change law of the soil, etc.

[0003] Currently, when conducting stratified sampling of soil, generally two methods are used. One is to vertically insert a sampling cylinder into the soil. After taking out a sample at a certain depth, insert it into the soil again to a certain depth according to the above sampling hole to achieve stratified sampling. However, multiple samplings are required, which is rather troublesome. The other is to directly insert a sampling cylinder with a certain length into the soil to a certain depth to simultaneously sample the soils at multiple depths. Then, after pushing out the soil in the sampling cylinder, the depth of the sample corresponding to the soil depth indicated by the scale line on the sampling cylinder can be known. However, when pushing out the soil in the sampling cylinder, the value of the scale line needs to be observed at all times, and the sampling cylinder needs to be placed in a vertical or horizontal state to reduce the reading error. To reduce the reading error, generally one person may need to inject the soil while another person reads the value for cooperation to separately collect the soils at different depths. Otherwise, the depth of the taken soil sample may not be accurate, which is rather cumbersome.

[0004] Based on the above situation, it is necessary to design a soil collection device capable of stratified sampling to solve the above problems. Summary of the Utility Model

[0005] The utility model provides a soil collection device capable of stratified sampling to solve the problems existing in the prior art.

[0006] The technical problems solved by the utility model are realized by adopting the following technical solutions:

[0007] A soil collection device capable of stratified sampling includes:

[0008] A sampling cylinder, inside which a push plate for pushing out the soil in the sampling cylinder is slidably connected, and a push rod is arranged on the push plate, and the push rod has the same axial length as the sampling cylinder;

[0009] Stratified positioning units, the number of which is multiple groups and are all arranged on the push rod. Each group of the stratified positioning units includes two positioning members with adjustable spacing, and the distance between the two positioning members is the depth of the soil layer to be sampled;

[0010] A positioning plate, which is connected to the push rod and is used to fix the position of the positioning member on the push rod;

[0011] Scale lines, which are arranged on the sampling cylinder and the positioning plate and are used to indicate the depth of the sampling cylinder inserted into the soil and the depth of the push rod entering the sampling cylinder.

[0012] Preferably, the positioning member includes an adjusting seat threadedly connected to the push rod and a positioning plug rotatably connected to the adjusting seat through a shaft rod. An elastic column is provided at the end of the positioning plug, and a positioning groove is provided in the notch of the positioning plate.

[0013] Preferably, the stratified positioning unit further includes a flexible connecting member, and the two adjusting seats of the same group of positioning members are connected to each other through the flexible connecting member.

[0014] Preferably, anti-slip patterns are provided on the outer wall of the adjusting seat.

[0015] Preferably, a scraping portion is provided on the lower end surface of the push plate, and the scraping portion is in contact with the inner circumferential wall of the sampling cylinder.

[0016] Preferably, a buffer pad is provided at the bottom end of the positioning plug.

[0017] The beneficial effects of the present invention are as follows: According to the depth of the soil layer to be sampled, the two positioning members of each group of stratified positioning units are respectively adjusted to the corresponding positions on the push rod. After that, the push rod is pushed to drive the push plate to push out the soil in the sampling cylinder, and whether the required soil layer sampling depth is reached is judged by the contact between the positioning member and the sampling cylinder, so as to obtain soil samples at each depth more accurately and be more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 Isometric structural schematic diagram provided by the present invention;

[0020] Figure 2 Cross-sectional structural schematic diagram provided by the present invention;

[0021] Figure 3 A partial schematic diagram provided for the present utility model;

[0022] Figure 4 A partial cross-sectional structural schematic diagram of the positioning member in the present utility model.

[0023] In the figure, 1 is a sampling cylinder; 11 is a push plate; 12 is a push rod; 13 is a positioning plate; 2 is a positioning member; 21 is an adjusting seat; 22 is a shaft rod; 23 is a positioning insert; 24 is an elastic column; 25 is a positioning groove; 26 is an anti-slip pattern; 3 is a flexible connecting member; 31 is a rotating ring; 4 is a scale line; 5 is a scraping part; 6 is a buffer pad. Specific embodiments

[0024] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific illustrations.

[0025] Referring to Figures 1-4 As shown, a soil sampling device capable of stratified sampling includes a sampling cylinder 1, and the bottom end of the sampling cylinder 1 can be serrated. A push plate 11 for pushing the soil in the sampling cylinder 1 out is slidably connected inside the sampling cylinder 1. A push rod 12 is provided on the push plate 11, and the push rod 12 is equal in axial length to the sampling cylinder 1. During use, the sampling cylinder 1 can be first vertically inserted into the soil to a certain depth, then the sampling cylinder 1 is pulled out, and the push plate 11 is pushed by the push rod 12 to push out the soil sample in the sampling cylinder 1. In order to push out the soil samples at different depths that need to be used, a plurality of sets of stratified positioning units and a positioning plate 13 are also provided. A plurality of sets of stratified positioning units are all arranged on the push rod 12. Each set of stratified positioning units includes two positioning members 2 with adjustable spacing, and the distance between the two positioning members 2 is the depth of the soil layer to be sampled. The positioning plate 13 is connected to the push rod 12 and is used to fix the position of the positioning member 2 on the push rod 12. And scales for indicating the depth of insertion of the sampling cylinder 1 into the soil and the depth of the push rod 12 entering the sampling cylinder 1 are provided on both the sampling cylinder 1 and the positioning plate 13. Specifically, the positioning member 2 includes an adjusting seat 21 threadedly connected to the push rod 12 and a positioning insert 23 rotatably connected to the adjusting seat 21 through a shaft rod 22. An elastic column 24 is provided at the end of the positioning insert 23, and a positioning groove 25 is provided in the notch of the positioning plate 13.

[0026] Specifically, during use, first, according to the depth of the soil layer to be obtained. For example, if it is necessary to collect soil at a position 20 - 30 cm below the ground surface, first rotate the two adjusting seats 21 and refer to the scale lines 4 on the positioning plate 13 to move them to the 20 cm and 30 cm positions. Then rotate the positioning plug 23 to drive the elastic column 24 out of the positioning groove 25. And under the blocking action of the elastic column 24, the elastic column 24 will not deform without external force, so it will not enter the positioning groove 25 in the positioning plate 13 again. At this time, the positioning plug 23 is misaligned with the opening at the upper end of the sampling cylinder 1. When the push rod 12 drives the positioning member 2 to move downward so that the lower positioning plug 23 abuts against the sampling cylinder 1, the push rod 12 cannot continue to move downward. At this time, it indicates that the initial position of the soil layer to be obtained is reached, that is, at 30 cm. The collection device can be prepared to collect soil samples. Then rotate the positioning plug 23 on this positioning member 2 to drive the elastic column 24 to move. After the elastic column 24 abuts against the positioning plate 13 and deforms, it enters the positioning groove 25 to position the positioning plug 23 in alignment with the positioning plate 13. And at this time, it is parallel to the opening at the upper end of the sampling cylinder 1, and it will not affect the positioning member 2 following the push rod 12 into the sampling cylinder 1. And then when another positioning member 2 abuts against the sampling cylinder 1 and the push rod 12 cannot continue to move, it indicates that the end position of the soil layer to be obtained is reached, that is, at 20 cm. At this time, soil samples at different depths can be collected. By analogy, soil samples at other depths can be sampled.

[0027] Refer to Figure 4 As shown, further, in order to facilitate the distinction of each group of layered positioning units, the layered positioning unit further includes a flexible connecting piece 3. And the two adjusting seats 21 of the same group of positioning members 2 are connected by the flexible connecting piece 3. The two positioning members 2 of each group of layered positioning units are connected by the flexible piece to facilitate the distinction. The flexible piece can be a spiral connecting rope or the like. And the two ends of the flexible piece can be connected with rotating rings 31. The rotating rings 31 are connected with the positioning members 2. When rotating the adjusting seat 21, the adjusting seat 21 can avoid driving the flexible connecting piece 3 to rotate synchronously to prevent it from being wound around the push rod 12.

[0028] Refer to Figure 3 As shown, further, anti-slip patterns 26 are provided on the outer wall of the adjusting seat 21 to improve the anti-slip ability when rotating the adjusting seat 21.

[0029] Further, a scraping portion 5 is provided on the lower end surface of the push plate 11. And the scraping portion 5 is in contact with the inner circumferential wall of the sampling cylinder 1. When the push plate 11 moves downward, the residual soil attached to the inner wall of the sampling cylinder 1 can be removed through the scraping portion 5 to keep the inner wall of the sampling cylinder 1 as clean as possible for the next sampling use.

[0030] Further, a buffer pad 6 is provided at the bottom end of the positioning insert 23. When the push rod 12 moves downward to drive the positioning insert 23 to contact the top of the sampling cylinder 1, buffering can be performed through the buffer pad 6 to reduce damage to the positioning insert 23 or the sampling cylinder 1, and the buffer pad 6 can be made of an elastic material such as rubber.

[0031] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil sampling device capable of stratified sampling, characterized in that Comprising; A sampling cylinder (1), a push plate (11) for pushing the soil in the sampling cylinder (1) out is slidably connected inside the sampling cylinder (1), a push rod (12) is provided on the push plate (11), and the push rod (12) has the same axial length as the sampling cylinder (1); A layered positioning unit, the number of the layered positioning units is multiple groups, and they are all arranged on the push rod (12). Each group of the layered positioning units includes two positioning members (2) with adjustable spacing, and the distance between the two positioning members (2) is the depth of the soil layer to be sampled; A positioning plate (13), the positioning plate (13) is connected to the push rod (12) and is used to fix the position of the positioning member (2) on the push rod (12); Scale lines (4), the scale lines (4) are arranged on the sampling cylinder (1) and the positioning plate (13) and are used to indicate the depth of the sampling cylinder (1) inserted into the soil and the depth of the push rod (12) entering the sampling cylinder (1).

2. The soil sampling device capable of stratified sampling according to claim 1, wherein, The positioning member (2) includes an adjusting seat (21) threadedly connected to the push rod (12) and a positioning plug (23) rotatably connected to the adjusting seat (21) through a shaft rod (22). An elastic column (24) is provided at the end of the positioning plug (23), and a positioning groove (25) is provided in the notch of the positioning plate (13).

3. The soil sampling device capable of hierarchical sampling according to claim 2, characterized in that, The layered positioning unit further includes a flexible connecting member (3), and the two adjusting seats (21) of the same group of the positioning members (2) are connected by the flexible connecting member (3).

4. The soil sampling device capable of hierarchical sampling according to claim 2, characterized in that, Anti-slip lines (26) are provided on the outer wall of the adjusting seat (21).

5. The soil sampling device capable of hierarchical sampling according to claim 1, characterized in that, A scraping portion (5) is provided on the lower end surface of the push plate (11), and the scraping portion (5) is attached to the inner circumferential wall of the sampling cylinder (1).

6. The soil sampling device capable of hierarchical sampling according to claim 2, characterized in that, A buffer pad (6) is provided at the bottom end of the positioning plug (23).

Images