Wetland soil sampling device and use method thereof

Abstract

The invention discloses a wetland soil sampling device and a use method thereof, and relates to the technical field of soil environment science. Comprising a first rod body, a force application handle which is in T-shaped connection with the first rod body, a fixed seat which is fixedly connected to one end, far away from the force application handle, of the first rod body, a sampler main pipe body which is connected to one side, far away from the first rod body, of the fixed seat, and a plurality of stacked sampling barrels which are detachably placed in the sampler main pipe body; a first opening is formed in the side face of the sampler main pipe body, the section of the sampler main pipe body is 1 / 2 to 3 / 4 of a circle, and a conical drill bit is fixedly connected to the end, away from the fixed seat, of the sampler main pipe body; a sampling opening is formed in the side face of the sampling barrel, and the edge of the pipe wall on one side of the sampling opening protrudes in the radial direction and is used for limiting the rotating position of the sampling barrel in the sampler main pipe body. When the sampling barrel rotates until the sampling opening is overlapped with the first opening, the soil sample enters the sampling barrel through the sampling opening. According to the device, the soil sampling depth can be accurately controlled, the sampling barrel is convenient to replace and clean, and a soil sample is not prone to falling off in the pulling process.

Description

Technical Field

[0001] The invention belongs to the technical field of soil environmental science, and in particular relates to a wetland soil sampling device and a use method thereof. Background Art

[0002] Wetlands are a special type of aquatic ecosystem that integrates aquatic and terrestrial organisms and has multiple ecological functions such as conserving water resources, purifying water quality, and maintaining biodiversity. Wetland research plays a key role in the fields of ecology and environmental science, and has become an emerging interdisciplinary research field. In wetland research, soil research is an indispensable part, and the selection of sampling methods and tools has a direct impact on the accuracy and objectivity of the research. However, due to the particularity of wetland ecosystems, wetland soils are often saturated with water or often in a stagnant state, which makes traditional soil sampling methods face challenges.

[0003] Traditional soil sampling tools include manual sampling drills, semi-circular gouge drills, and soil cylindrical cylinder samplers. Taking the soil cylindrical cylinder sampler as an example, its operation method is to insert the cylindrical sampling tube into the soil, let the soil enter the tube, and then pull out the sampling tube to obtain the soil sample. However, this method has some problems when sampling wetland soil: during the extraction process, the soil can easily fall off from the opening of the sampling tube, resulting in sample loss, and repeated sampling is required, which is time-consuming and laborious. In addition, these traditional tools cannot accurately control the sampling depth, which will affect the accuracy and precision of the sample. In addition, traditional sampling tools may leave soil residue in the tube after use, which may cause experimental errors.

[0004] Therefore, developing a new wetland soil sampling device and its use method, which can accurately control the sampling depth, facilitate the replacement of sampling tubes, solve the problem of soil residue, and ensure that the soil sample will not fall off during the extraction process, is of great significance for deepening the research on wetland soil. This device will greatly improve the sampling efficiency and accuracy, thereby promoting the development of wetland ecosystem research. Summary of the invention

[0005] The existing soil sampling technology has the problem that after the wetland soil sampling is completed, the soil is easy to fall from the sampling port of the sampling tube during the extraction process of the sampling device, resulting in the loss of soil samples, and repeated sampling is required, which is time-consuming and laborious. In addition, the traditional soil sampling device cannot accurately control the depth of the soil experimental sample taken, and there is also the problem of soil residue in the sampling device, which affects the accuracy and precision of the experimental samples.

[0006] In order to solve the above technical problems, the present invention provides a wetland soil sampling device for collecting soil in a wetland ecosystem and a method of using the device, which can ensure that the soil sample is not easy to fall off after sampling is completed, accurately control the soil sampling depth, ensure that the soil sample is not contaminated by soil from other soil layers, and can replace the sampling tube to reduce sampling errors.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A wetland soil sampling device, comprising:

[0009] A first rod body;

[0010] A force applying handle is vertically fixed to one end of the first rod body and is connected to the first rod body in a T-shape;

[0011] A fixing seat, fixedly connected to an end of the first rod body away from the force-applying handle;

[0012] The sampler main body is connected to the side of the fixing seat away from the first rod body. The sampler main body is a tube with a first opening on the side, and its cross section is 1 / 2 circle to 3 / 4 circle. One end of the sampler main body away from the fixing seat is fixedly connected to a conical drill bit;

[0013] A sampling tube, wherein a plurality of stacked sampling tubes are detachably placed in the main body of the sampler, a sampling port is provided on the side of the sampling tube, and the edge of the tube wall on one side of the sampling port is radially protruded to limit the rotation position of the sampling tube in the main body of the sampler;

[0014] When the sampling barrel rotates until the sampling port coincides with the first opening, the soil sample enters the sampling barrel through the sampling port.

[0015] Preferably, the sampling tube includes a sampling tube body, the outer diameter of the sampling tube body is adapted to the inner diameter of the sampler main tube, the sampling tube body is sealed at the top, open at the bottom, and the sampling port is opened on the side, and the tube body on one side of the sampling port smoothly protrudes outward to form an extended pointed soil-cutting end.

[0016] Preferably, the inner diameter of the sampling tube body is 10 cm, the sampling port is 4 cm wide, and the extended pointed soil-cutting end is 2 cm wide.

[0017] Preferably, the heights of the sampling tubes are consistent.

[0018] Preferably, the cross section of the sampler main body is 1 / 2 circle, and the sampling tube is put in / taken out through the first opening on the side of the sampler main body.

[0019] Preferably, the cross section of the sampler main body is 3 / 4 circle, the sampler main body is detachably connected to the fixing seat, and the sampling cartridge is put in / taken out through the top port of the sampler main body.

[0020] Preferably, the sampler main body and the fixing seat are connected by bolts.

[0021] Preferably, foot pedals for pedal assistance are fixedly connected to both sides of the fixing seat.

[0022] A method for using a wetland soil sampling device, according to any of the wetland soil sampling devices described above, comprising the following steps:

[0023] S01: assembling multiple sampling tubes at different heights into the main body of the sampler, wherein the sampling ports of the sampling tubes are all located inside the main body of the sampler, i.e., ensuring that the first opening of the main body of the sampler is misaligned with the sampling port, so that the soil sample cannot enter the sampling tube;

[0024] S02: Insert the main body of the sampler vertically into the soil layer so that each sampling tube is at a different height position of the soil layer;

[0025] S03: driving the main body of the sampler to rotate by applying a force handle, so that the sampling port rotates to a position that coincides with the first opening, and continuing to rotate the main body of the sampler to complete sampling;

[0026] S04: Rotate the force application handle in the reverse direction to rotate the sampling port back to the inner side of the sampler main body, and the sampling port and the first opening are restored to the initial misaligned position;

[0027] S05: Pull out the main body of the sampler, take out each sampling tube from the main body of the sampler, and obtain the soil sample in each sampling tube.

[0028] The present invention discloses the following technical effects:

[0029] The present invention provides a sampling device for collecting soil in a wetland ecosystem, which can prevent soil samples from falling off after sampling, accurately control the soil sampling depth, ensure that the soil samples are not contaminated by soil from other soil layers, and replace the sampling tube to reduce sampling errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a front view of the device according to an embodiment of the present invention;

[0032] Figure 2 A top view of a device according to an embodiment of the present invention;

[0033] Figure 3 It is a right side view of the device according to an embodiment of the present invention;

[0034] Figure 4 It is an axonometric diagram of a device according to an embodiment of the present invention;

[0035] Figure 5 It is a schematic diagram of the sampling tube and the main body of the sampler in the device of the embodiment of the present invention being separated;

[0036] Figure 6 It is a schematic diagram of the structure of the sampling tube in the device of the embodiment of the present invention;

[0037] Figure 7 It is a schematic diagram of the connection between the sampler main body and the fixing seat in some other embodiments of the present invention.

[0038] In the figure: 1. force handle; 2. first rod body; 3. fixing seat; 4. foot pedal; 5. sampler main body; 51. first opening; 6. conical drill bit; 7. first sampling tube; 8. second sampling tube; 9. third sampling tube; 91. sampling tube body; 92. sampling port; 93. extended pointed cutting end; 10. bolt. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] Reference Figures 1 to 6As shown, an embodiment of the present invention provides a wetland soil sampling device, including a semicircular hollow sampler main body 5, a conical drill bit 6 is connected to the bottom of the sampler main body 5, and a cylindrical fixed seat 3 is connected to the top of the sampler main body 5; the center of the top of the fixed seat 3 is fixed to the first rod body 2, and the end of the first rod body 2 away from the fixed seat 3 is fixed to the force handle 1, the force handle 1 is a second rod body perpendicular to the first rod body 2, the second rod body is horizontally arranged, and the middle part is fixed to the end of the first rod body 2; the two sides of the fixed seat 3 are respectively fixed with foot pedals 4, and the connection line of the two foot pedals 4 is parallel to the force handle 1; a plurality of sampling tubes stacked from top to bottom can be detachably placed in the sampler main body 5, each sampling tube has the same structure and size, and is located at different heights of the sampler main body 5, for sampling soil at different depths. In actual use, different numbers and sampling tubes can be placed according to actual sampling needs. It should be understood that when the number of sampling tubes is more, the height of a single sampling tube is smaller.

[0042] Specifically, Figure 3 As shown, the first rod body 2 is connected to the force application handle 1 in a T-shape, and anti-skid rubber pads are provided at both ends of the force application handle 1 to facilitate the staff to apply force. The lower end of the first rod body 2 is fixedly connected to a cylindrical fixing seat 3, and two symmetrical foot pedals 4 are fixedly connected to both sides of the fixing seat 3. The bottom of the foot pedal 4 is at the same horizontal height as the top of the sampler main body 5. The bottom of the fixing seat 3 is connected to a semicircular sampler main body 5. The height of the sampler main body 5 is 40 cm. A sampling tube is placed in the sampler main body 5, as shown in FIG. Figure 3 and Figure 4 As shown, in this embodiment, three sampling tubes are taken as an example, and the first sampling tube 7, the second sampling tube 8, and the third sampling tube 9 are stacked in the sampler main body 5 from bottom to top. When used, a set (multiple) of sampling tubes are placed in the sampler main body 5, and the overall height of the sampler main body 5 is 40 cm, and the overall height of a set of sampling tubes is also 40 cm, and the two are embedded and stuck. Multiple sampling tubes in a set have the same outer diameter, and their heights can be the same or different.

[0043] like Figure 5 As shown, a first opening 51 is opened on one side of the sampler main body 5. In this embodiment, the sampler main body 5 is a semicircular body, and the first opening 51 on its side is used to place a sampling tube and allow soil samples to pass through during the sampling process.

[0044] like Figure 6As shown, the sampling tube includes a sampling tube body 91, the top of the sampling tube body 91 is sealed and the bottom is open, the sampling tube body 91 has an outer diameter size that matches the inner wall of the sampler main body 5, and a 4cm sampling port 92 is opened on the side of the sampling tube body 91, and the tube body on one side of the sampling port 92 smoothly bulges outward to form a 2cm extended pointed soil-cutting end 93, and the other side of the sampling port 92 is a flat end. The inner diameter of the sampling tube body 91 is 10cm, the top is sealed, the bottom is open, and a soil sampling cavity for accommodating soil samples is formed inside, and the extended pointed soil-cutting end 93 on one side of the sampling port 92 extends outward to facilitate wetland soil sampling. The sampling tube is set with multiple different heights, namely, multiple sampling tubes with a height of 5cm, a height of 10cm, and a height of 20cm, which are used to collect samples of different soil depths. The outer diameter of the sampling tube is the same as the inner diameter of the sampler main body 5. A conical drill bit 6 is welded to the lower end of the sampler main body 5 , and the outer diameter of the conical large end thereof is the same as the outer diameter of the sampler main body 5 .

[0045] In the first position, the sampling ports 92 of the sampling tube are all inside the sampler main body 5, that is, the sampling ports 92 and the first opening 51 are misaligned, and the soil cannot enter the sampling tube.

[0046] In the second position, the sampling port 92 of the sampling cylinder rotates to a position that overlaps with the first opening 51. Figure 4 As shown, at this time, the soil sample can enter the sampling cylinder through the first opening 51 and the sampling port 92 .

[0047] In addition, in actual use, a solid cylinder with the same height as the sampling tube is also provided. The solid cylinder can replace the sampling tube and be placed in the sampler main body 5 at different heights to meet the requirements of different sampling depths.

[0048] When the sampling tube is put in, the extended pointed soil-cutting end 93 has a 2cm outward tip protruding, so that this end is close to the wall of the sampler main body 5, and the 2cm outward tip protruding just gets stuck on the wall of the sampler main body 5. At this time, the sampling port 92 of the sampling tube is all inside the sampler main body 5, and the sampling tube of the exposed part of the sampler main body 5 has no opening, which is convenient for the next step of soil sampling, and no soil sample enters the sampling tube. After the sampling tube is installed, the soil sampling device is vertically placed on the wetland soil surface, and the staff stands on the pedal 4 and applies downward force to make the sampler main body 5 go deep into the soil layer. When the pedal 4 contacts the soil surface, all the sampling tubes just enter the corresponding soil layer to achieve accurate sampling. Subsequently, the force handle 1 is rotated counterclockwise, and the sampler main body 5 outside the sampling tube begins to rotate. Since the extended pointed soil-cutting end 93 on one side of the sampling port 92 of the sampling tube is partially extended, the sampling tube begins to rotate due to the resistance of the soil. The sampling port 92 is rotated out, and the soil sampling process begins. When the extended pointed soil-cutting end 93 of the sampling tube contacts the tube wall at the other end of the sampler main body 5, the outer wall of the sampler main body 5 jams the extended pointed soil-cutting end 93, and the sampling tube cannot continue to rotate. At this time, continue to rotate the force handle 1 counterclockwise to further extract soil. After the soil sampling is completed, the handle 1 is applied clockwise. At this time, because the inner diameter of the extended pointed soil-cutting end 93 is slightly larger than the sampler main body 5, the sampling tube begins to rotate due to the resistance of the wetland soil, and the opening part turns back to the inside of the sampler main body 5. The sampling tube of the exposed part of the sampler main body 5 has no opening, ensuring that the soil sample in the sampling tube is not disturbed by soil in other deep layers during the extraction of the soil sampler. After the soil sampler is pulled out of the soil, it is laid flat on the ground, and tweezers are used to remove the sampling tube from the sampler main body 5. Since the bottom of the sampling tube is open, the soil sample can be directly collected.

[0049] After multiple sampling tubes are stacked, they are placed in the sampler main body 5, and the sampling tubes can rotate axially in the sampler main body 5 to achieve sampling. It should be understood that in actual applications, in order to achieve the rotatable connection between the sampling tube and the sampler main body 5, the semicircular sampler main body 5 in the above embodiment is only an optional method, and a three-quarter circular sampler main body 5 can also be set. In this case, the sampling tube can rotate in the sampler main body 5, and can also meet the sampling from the quarter opening, and can also ensure that the sampling tube will not fall out of the opening of the sampler main body 5. Of course, at this time, the sampling tube can only be inserted from the upper end or the lower end of the sampler main body 5. Therefore, the sampler main body 5 needs to be detachably connected to the fixing seat 3 or the conical drill bit 6, preferably fastened by bolts 10.

[0050] For example, in Figure 7In one embodiment shown, the fixing seat 3 and the sampler main body 5 are fastened together by a plurality of bolts 10. Before sampling, the bolts 10 are removed, and the sampling tubes are sequentially inserted through the upper end opening of the sampler main body 5, and then the fixing seat 3 is installed and the bolts 10 are tightened for fixing. After sampling, the sampling tube is taken out by removing the bolts 10 again. Although it is more troublesome to take out the sampling tube in this embodiment, it can ensure that the sampling tube is firmly installed in the sampler main body 5 and will not fall out.

[0051] The embodiment of the present invention also provides a method for using the wetland soil sampling device, comprising the following steps:

[0052] S01: Put a set of sampling tubes into the sampler main body 5, when putting them in, the pointed soil-cutting end is close to the tube wall of one side of the sampler main body 5, so that the sampling port 92 is located inside the sampler main body 5, and the first opening 51 of the sampler main body 5 is misaligned with the sampling port 92. In the first position, no soil sample enters the sampling tube;

[0053] S02: The sampler main body 5 of the wetland soil sampling device is completely inserted into the soil layer perpendicularly to the wetland soil surface; specifically, the staff holds the force application handle 1, stands on the foot pedal 4 and applies force downward, so that the sampler main body 5 partially penetrates into the soil layer, and when the foot pedal 4 contacts the soil surface, all the sampling cavities just enter the corresponding soil layer to achieve accurate sampling;

[0054] S03: Rotate the force-applying handle 1 counterclockwise, the pointed soil-cutting end 93 of the sampling tube contacts the soil, and under the action of soil resistance, the sampling tube starts to rotate, and the sampling port 92 rotates to a position that coincides with the first opening 51, i.e., the second position, and the sampling process begins. When the pointed soil-cutting end 93 of the sampling tube contacts the wall of the other side of the sampler main body 5, the soil-taking tube stops rotating, and the force-applying handle 1 continues to be rotated counterclockwise to further complete the sampling;

[0055] S04: After the soil sampling is completed, the force-applying handle 1 is rotated clockwise, and the pointed soil-cutting end 93 of the sampling tube rotates under the action of soil resistance, and the sampling port 92 rotates back to the inside of the sampler main body 5. The sampling port 92 and the first opening 51 rotate to a dislocated position, i.e., the first position. At this time, the soil sample stored in the sampling tube is isolated from the soil outside the sampling tube and is not disturbed by the soil in other deep soil layers;

[0056] S05: Pull out the wetland soil sampling device, lay it flat on the ground, take out each sampling tube from the sampler main body 5, and then collect the soil sample.

[0057] Compared with the sampling method of the sampling device in the prior art, the present invention at least discloses the following beneficial effects:

[0058] 1. During the extraction process after the soil sampler completes sampling, the soil sample is not easy to fall, which improves the sampling efficiency.

[0059] 2. It can accurately control the depth of the soil samples taken, and at the same time ensure that the sampling process is not affected by the soil in other soil layers, thereby improving the accuracy and precision of the soil samples.

[0060] 3. The sampling tube in the sampling device is replaceable, which solves the problem of soil residue in the sampling tube and reduces the error caused during the sampling process.

[0061] 4. The device has a simple structure, low cost, can be reused, and is easy to promote and apply.

[0062] The details not disclosed in the present invention are conventional technical means well known to those skilled in the art.

[0063] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0064] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A wetland soil sampling device, characterized in that: include: A first rod body (2); A force application handle (1) is vertically fixed to one end of the first rod body (2) and is connected to the first rod body (2) in a T-shape; A fixing seat (3) fixedly connected to an end of the first rod body (2) away from the force applying handle (1); The sampler main body (5) is connected to a side of the fixing seat (3) away from the first rod body (2), the sampler main body (5) is a tube body with a first opening (51) on the side, and its cross section is 1 / 2 to 3 / 4 of a circle. One end of the sampler main body (5) away from the fixing seat (3) is fixedly connected to a conical drill bit (6); A sampling tube, wherein a plurality of stacked sampling tubes are detachably placed in a main body (5) of the sampler, a sampling port (92) is opened on the side of the sampling tube, and the edge of the tube wall on one side of the sampling port (92) is radially protruding, so as to limit the rotation position of the sampling tube in the main body (5) of the sampler; When the sampling barrel is rotated until the sampling port (92) overlaps with the first opening (51), the soil sample enters the sampling barrel through the sampling port (92).

2. The wetland soil sampling device according to claim 1, characterized in that: The sampling tube comprises a sampling tube body (91), the outer diameter of which matches the inner diameter of the sampler main body (5), the sampling tube body (91) is sealed at the top, open at the bottom, and has the sampling port (92) at the side, and the tube body on one side of the sampling port (92) smoothly bulges outwards to form an extended pointed soil-cutting end (93).

3. The wetland soil sampling device according to claim 2, characterized in that: The inner diameter of the sampling tube body (91) is 10 cm, the sampling port (92) is 4 cm wide, and the extended pointed soil-cutting end (93) is 2 cm wide.

4. The wetland soil sampling device according to claim 3, characterized in that: The heights of the sampling tubes are consistent.

5. The wetland soil sampling device according to claim 1, characterized in that: The cross section of the sampler main body (5) is 1 / 2 circle, and the sampling tube is put in / taken out through the first opening (51) on the side of the sampler main body (5).

6. The wetland soil sampling device according to claim 1, characterized in that: The cross section of the sampler main body (5) is a 3 / 4 circle. The sampler main body (5) is detachably connected to the fixing seat (3). The sampling tube is put in / taken out through the top port of the sampler main body (5).

7. The wetland soil sampling device according to claim 6, characterized in that: The sampler main body (5) and the fixing seat (3) are connected via bolts (10).

8. The wetland soil sampling device according to claim 1, characterized in that: Foot pedals (4) for pedal assistance are fixedly connected to both sides of the fixing seat (3).

9. A method for using a wetland soil sampling device, according to any one of claims 1 to 8, characterized in that: The following steps are involved: S01: assembling a plurality of sampling tubes at different heights into the sampler main body (5), wherein the sampling ports (92) of the sampling tubes are all located inside the sampler main body (5), i.e., ensuring that the first opening (51) of the sampler main body (5) is misaligned with the sampling port (92), so that the soil sample cannot enter the sampling tube; S02: inserting the main body (5) of the sampler vertically into the soil layer so that each sampling tube is at a different height position of the soil layer; S03: driving the sampler main body (5) to rotate by means of the force application handle (1), so that the sampling port (92) rotates to a position where it coincides with the first opening (51), and continuing to rotate the sampler main body (5) to complete sampling; S04: Rotate the force-applying handle (1) in the reverse direction to rotate the sampling port (92) back to the inner side of the sampler main body (5), and the sampling port (92) and the first opening (51) are restored to their initial misaligned positions; S05: Pull out the main body (5) of the sampler, take out each sampling tube from the main body (5) of the sampler, and obtain the soil sample in each sampling tube.

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