Quantitative sampling device for soil animals

Abstract

The utility model belongs to the field of soil sampling technology relates to a kind of soil animal quantitative sampling device, including sampling cylinder and cutter;The sampling cylinder is made of lower cylinder body, multiple intermediate cylinder body and upper cylinder body series connection and is assembled, connecting ring is arranged between two adjacent cylinder bodies, connecting ring is assembled by two half rings, the outer side wall of the middle part of each half ring is provided with hole plate, the outer side wall of the top end of lower cylinder body, the outer side wall of both ends of intermediate cylinder body and the outer side wall of the bottom end of upper cylinder body are provided with two hole seats, and the upper and lower two hole seats of two adjacent cylinder bodies are connected by bolt detachably;Cutter is used to cut off the soil between two adjacent cylinder bodies.The sampling cylinder of the sampling device is assembled by multiple cylinder bodies and multiple connecting rings, can extract a half ring first cut off the soil core between two adjacent cylinder bodies and then split two adjacent cylinder bodies, cut the soil core into multiple sections and leave in cylinder body, can make the cut surface more flat, so that soil core is not easy to loosen and fall off.

Description

Technical Field

[0001] This utility model belongs to the field of soil sampling technology, specifically relating to a soil animal quantitative sampling device. Background Technology

[0002] The fundamental purpose of soil animal sampling is to understand and assess the structure, function, and health of soil ecosystems. A certain amount of soil is collected using a sampling device, and microorganisms such as amoebas, ciliates, nematodes, and rotifers are observed and extracted using an electron microscope. Existing sampling devices generally include a cylindrical sampling tube. External force inserts the sampling tube into the soil, allowing the soil and its internal animals to enter the tube. The tube is then extracted to separate the soil sample. Examples include the JC-TRCY01A and LB-ETC-300 soil samplers. In addition, there are patented technologies proposing related sampling devices.

[0003] For example, patent CN215218143U discloses a soil quantitative sampling device for collecting soil animals, including a cylinder, a bucket, a cover, a soil pressing part, a soil sample transmission device, a bottom plate, a partition, and a scale. The soil sample transmission device consists of a threaded rod, a rotating handle, and a squeezing plate. The bottom of the cylinder is equipped with a bucket, and the outer wall of the cylinder has several semi-circular slots evenly distributed along the axial direction. The partition is inserted into the semi-circular slots, and the circumferential surface of the partition is in clearance fit with the inner wall of the cylinder. A cover is provided on the semi-circular slots. The upper part of the cylinder is equipped with a soil pressing part, and the bottom plate is provided inside the top of the cylinder and is fixedly connected to the inner wall of the cylinder. A threaded hole is provided in the center of the bottom plate along the axial direction. The squeezing plate is located inside the cylinder, and the circumferential surface of the squeezing plate is in clearance fit with the inner wall of the cylinder. One end of the threaded rod is fixedly connected to the center of the squeezing plate, and the other end of the threaded rod is fixedly connected to the rotating handle. The outer wall of the cylinder is provided with a scale along the axial direction.

[0004] The existing products of the above-mentioned samplers and the existing patents of the sampling devices all include a cylindrical sampling tube structure. Their sampling principles are the same or similar. However, they all have the problem that after the sampling tube is pulled out of the soil, the entire soil core sample inside needs to be pushed out. The entire soil core sample has a long journey when it is pushed out, which causes the soil core sample to be squeezed, accelerates the animal activity inside, and easily increases the detection error. Furthermore, when the soil core sample is pushed out of the sampling tube and then cut into multiple samples, it is easy to cause the soil core to become loose and shapeless, especially the cut surface is uneven. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model proposes a soil animal quantitative sampling device. The sampling tube of this device is assembled from multiple tube segments. After the sampling tube is pulled out, the soil core between two adjacent tube segments is cut off, and then each tube segment is disassembled to solve the problems mentioned in the background art.

[0006] This utility model is achieved through the following technical solution: A soil animal quantitative sampling device includes a sampling cylinder, which is assembled from a lower cylinder, multiple intermediate cylinders, and an upper cylinder. Connecting rings are provided between the lower cylinder and the intermediate cylinders, between two adjacent intermediate cylinders, and between the intermediate cylinder and the upper cylinder. Each connecting ring is composed of two semicircular rings. The inner diameters of the lower cylinder, intermediate cylinders, upper cylinder, and semicircular rings are equal. A perforated plate is provided on the outer wall of the middle part of each semicircular ring. Two symmetrical hole seats are provided on the outer wall of the top of the lower cylinder, the outer walls of both ends of each intermediate cylinder, and the outer wall of the bottom of the upper cylinder. Internal threads are provided in the hole seats at the top of the lower cylinder and at the top of each intermediate cylinder. Adjacent lower cylinders, connecting rings, and intermediate cylinders are detachably connected by bolts. Adjacent intermediate cylinders, connecting rings, and intermediate cylinders are detachably connected by bolts. Adjacent intermediate cylinders, connecting rings, and upper cylinders are detachably connected by bolts. It also includes a cutter, one end of which is a semi-circular structure with a diameter equal to the inner diameter of the semi-circular ring, allowing it to be inserted into the cylinder. The cutter is used to cut the soil between two adjacent sections of the cylinder. In particular, the cutter can be inserted into the sampling cylinder from a semi-circular ring that is pulled out from the sampling cylinder to cut the soil between two adjacent sections of the cylinder.

[0007] Furthermore, the top outer wall of the upper cylinder is provided with two handles symmetrically arranged along the central axis, which make it easy to press the sampling cylinder into the soil and pull it out of the soil.

[0008] Furthermore, the sampling device also includes a core-pushing mechanism, which includes a circular core-pushing plate and a T-shaped push rod. The bottom end of the T-shaped push rod is fixed at the center of the circular core-pushing plate. The outer diameter of the circular core-pushing plate is equal to the inner diameter of the sampling tube, so that it can be inserted into each section of the sampling tube to push out the soil core.

[0009] Furthermore, the core-pushing mechanism also includes a core-pushing sleeve. The inner diameter of the bottom end of the core-pushing sleeve is equal to the inner diameter of the circular core-pushing plate, and its top end is flared and trumpet-shaped. During core pushing, the core-pushing sleeve can overlap the top end of any part of the sampling cylinder. The core-pushing sleeve is used to guide the circular core-pushing plate. The flared and trumpet-shaped structure at the top end of the core-pushing sleeve makes it easy for the circular core-pushing plate to be inserted into it. The circular core-pushing plate can transition from inside the core-pushing sleeve to inside the cylinder.

[0010] As can be seen from the above technical solution, the soil animal quantitative sampling device provided by this utility model has the following beneficial effects: The sampling device consists of a multi-section cylinder and multiple connecting rings. After the sampling cylinder is pulled out of the soil, one of the semicircular rings of the connecting ring is pulled out to form an insertion port, which allows the cutter to be easily inserted into the cylinder to cut the soil core. The soil core between two adjacent cylinder sections is cut first, and then the adjacent cylinder sections are separated to cut the soil core into multiple segments that remain in the cylinder. The soil core sample in each intermediate cylinder can be quantitatively sent for testing. This makes the cut surface smoother and prevents the soil core from loosening and falling off. The circular pusher plate can push out the soil core in each cylinder section separately, which reduces the travel length of the soil core sample when it is pushed out, reduces the compression of the soil core sample, and helps to reduce detection errors. Attached Figure Description

[0011] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0012] Figure 1 This is a three-dimensional structural diagram of Example 1.

[0013] Figure 2 This is a cross-sectional structural diagram of Example 1.

[0014] Figure 3 for Figure 2 A magnified schematic diagram of the local structure at point A in the middle.

[0015] Figure 4 This is a schematic diagram of the exploded structure of Example 1.

[0016] Figure 5 for Figure 4 Enlarged schematic diagram of the local structure at point B.

[0017] Figure 6 This is a three-dimensional structural diagram of Example 2.

[0018] Figure 7 This is a schematic diagram of the exploded structure of Example 2.

[0019] The components in the diagram are named as follows: 1. Sampling cylinder; 1.1. Lower cylinder; 1.2. Middle cylinder; 1.3. Upper cylinder; 1.4. Connecting ring; 1.4.1. Semicircular ring; 1.5. Hole seat; 1.6. Hole plate; 1.7. Bolt; 1.8. Insertion hole; 1.9. Insertion port; 2. Handle; 3. Cutter; 4. Core pushing mechanism; 4.1. Circular core pushing plate; 4.2. T-shaped push rod; 4.3. Core pushing sleeve; 4.4. Ear plate; 4.5. Insert rod. Detailed Implementation

[0020] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0021] In the description of this application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation 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.

[0022] Example 1 A soil animal quantitative sampling device, such as Figures 1 to 5 As shown, it mainly consists of a sampling cylinder 1, a handle 2, and a cutter 3. The sampling cylinder 1 mainly consists of a lower cylinder 1.1, a connecting ring 1.4, a middle cylinder 1.2, and an upper cylinder 1.3. The connecting ring 1.4 is assembled from two semicircular rings 1.4.1.

[0023] The sampling tube 1, as Figure 1 and Figure 4 As shown, it is assembled from a lower cylinder 1.1, multiple intermediate cylinders 1.2, and an upper cylinder 1.3 connected in series. Connecting rings 1.4 are placed between the lower cylinder 1.1 and the intermediate cylinders 1.2, between two adjacent intermediate cylinders 1.2, and between the intermediate cylinders 1.2 and the upper cylinder 1.3. The inner diameters of the lower cylinder 1.1, the intermediate cylinders 1.2, the upper cylinder 1.3, and the semicircular rings 1.4.1 are equal, so that the sampling channels inside the sampling cylinder 1 have the same diameter. like Figures 1 to 5As shown, each semicircular ring 1.4.1 has a perforated plate 1.6 on its outer side wall at the middle. The outer side wall at the top of the lower cylinder 1.1, the outer side walls at both ends of each intermediate cylinder 1.2, and the outer side wall at the bottom of the upper cylinder 1.3 all have two symmetrically arranged perforated seats 1.5 along the central axis. Internal threads are provided in the perforated seat 1.5 at the top of the lower cylinder 1.1 and the perforated seat 1.5 at the top of each intermediate cylinder 1.2. Adjacent lower cylinders 1.1, connecting rings 1.4, and intermediate cylinders 1.2 are detachably connected by bolts 1.7, and adjacent intermediate cylinders 1.2, connecting rings 1.4, and intermediate cylinders 1.2 are connected by bolts 1.7. The adjacent intermediate cylinder 1.2, connecting ring 1.4, and upper cylinder 1.3 are detachably connected by bolts 1.7. Specifically, bolts 1.7 pass through two adjacent seat 1.5 from top to bottom. The bottom end of bolt 1.7 is threaded into the internal threaded hole on a seat 1.5 at the lower part between the two cylinder sections. The semi-circular ring 1.4.1 is clamped between the two adjacent cylinder sections, and bolt 1.7 passes through the through hole on the orifice plate 1.6. The two adjacent cylinder sections refer to the lower cylinder 1.1 and the adjacent intermediate cylinder 1.2, the adjacent intermediate cylinder sections at both ends, or the upper cylinder 1.3 and the adjacent intermediate cylinder 1.2.

[0024] The handle 2, as Figure 1 and Figure 2 As shown, it has two handles 2, one end of which is welded to the top outer wall of the upper cylinder 1.3. The two handles 2 are symmetrical along the central axis of the upper cylinder 1.3. The sampling cylinder 1 can be easily pressed into the soil and pulled out of the soil through the two handles 2.

[0025] The cutter 3, such as Figure 1 , Figure 4 and Figure 5 As shown, one end of the tube has a semi-circular structure with a diameter equal to the inner diameter of the semi-circular ring 1.4.1, allowing it to be inserted into the tube. The cutter 3 is used to cut the soil between two adjacent tube sections. After removing one bolt 1.7 on one side of the tube, the semi-circular ring 1.4.1 is pulled out radially, forming an insertion port 1.9 between two adjacent tube sections for the cutter 3 to be inserted. The cutter 3 can be inserted through the insertion port 1.9 to cut the soil between the two adjacent tube sections. After removing the bolt 1.7 on the other side of the two adjacent tube sections, the two adjacent tube sections can be separated, with the soil core remaining inside the tube. The soil core can be ejected in sections later, which also improves the flatness of the soil core sample cut surface.

[0026] In a preferred embodiment, the thickness of the semicircular ring 1.4.1 is 2~5mm, and the thickness of the cutter 3 is not greater than the thickness of the semicircular ring 1.4.1, so that it can be inserted into the cylinder from the pulled-out semicircular ring 1.4.1 to cut the soil core. If the thickness of the semicircular ring 1.4.1 is too small, the insertion port 1.9 formed between the two adjacent sections of the cylinder after the semicircular ring 1.4.1 is pulled out will be too narrow, and the cutter 3 will not be able to easily insert into the insertion port 1.9. If the thickness of the semicircular ring 1.4.1 is too large, the insertion port 1.9 will be too wide, and the cutter 3 will not be able to cut the soil core flat when inserted into the insertion port 1.9.

[0027] In a preferred embodiment, to facilitate the removal of the semicircular ring 1.4.1 from between two adjacent cylindrical sections, as follows: Figure 5 As shown, the perforated plate 16 of the semicircular ring 1.4.1 has a transverse through-hole 1.8. A rod is inserted into the through-hole 1.8, and the semicircular ring 1.4.1 can be pulled out radially from between two adjacent cylinders by means of the rod.

[0028] As a preferred embodiment, in this example, Figure 1 and Figure 5 As shown, the hole seat 1.5 is a block structure with a right-angled trapezoidal vertical cross section, which forms a chamfered structure on the outer wall of the sampling tube 1, reducing resistance when the sampling tube 1 is inserted into or removed from the soil.

[0029] The operating principle of this sampling device is as follows: Assemble the sampling tube 1, apply pressure by holding the handle 2 and insert the sampling tube 1 vertically downward into the soil until the designed depth. Shaking the sampling tube 1 helps to loosen and break the soil core connecting the inside and outside at the bottom of the sampling tube 1, so that when the sampling tube 1 is pulled out, the soil core at the bottom of the sampling tube 1 will not be pulled and fall off too much. After pulling the sampling tube 1 out of the soil, the soil core between the two adjacent tube sections is cut to separate the sampling tube 1 into sections. Specifically, one of the bolts 1.7 between the two adjacent tube sections is removed, and one of the semicircular rings 1.4.1 is pulled out to form an insertion port 1.9 between the two adjacent tube sections. The cutter 3 is inserted into the tube through the insertion port 1.9 to cut the soil core between the two tube sections. Then, the other bolt 1.7 is removed, so that the two adjacent tube sections can be separated, while the soil core remains in the separated tube section. After all the tube sections are separated, the soil core is pushed out from each tube section. Since the sampling tube 1 of the sampling device is assembled from multiple sections of tubes, after the sampling tube 1 is pulled out of the soil, the soil core between two adjacent sections of tubes is cut off first, and then the two adjacent sections of tubes are separated and the soil core is pushed out from each section of tube. This can reduce the travel length of the soil core sample when it is pushed out, reduce the compression of the soil core sample, and help reduce detection errors. Cutting the soil core into multiple sections and leaving them in the tube can make the cut surface smoother and make the soil core less likely to loosen and fall off.

[0030] Example 2 A soil animal quantitative sampling device, differing from Embodiment 1 in that: this sampling device further includes a core-pushing mechanism 4, such as... Figure 6 and Figure 7 As shown, the core-pushing mechanism 4 mainly consists of a circular core-pushing plate 4.1, a T-shaped push rod 4.2, and a core-pushing sleeve 4.3.

[0031] like Figure 7 As shown, the bottom end of the T-shaped push rod 4.2 is fixed at the center of the circular push plate 4.1. The outer diameter of the circular push plate 4.1 is equal to the inner diameter of the sampling cylinder 1, so that it can be inserted into each section of the sampling cylinder 1 to push out the soil core. like Figure 7 As shown, the inner diameter of the bottom end of the pusher sleeve 4.3 is equal to the inner diameter of the circular pusher plate 4.1, and its top end is flared, making it easy for the circular pusher plate 4.1 to be inserted into it from its top end. like Figure 6 and Figure 7 As shown, the bottom outer wall of the pusher sleeve 4.3 is welded with ear plates 4.4 symmetrical along the central axis. Each ear plate 4.4 is welded with a rod 4.5. When the pusher sleeve 4.3 overlaps the top of any cylinder of the sampling cylinder 1, the two rods 4.5 are respectively inserted into the two holes 1.5 at the top of the cylinder, which can ensure that the pusher sleeve 4.3 is coaxial with the cylinder of the sampling cylinder 1, so that the circular pusher plate 4.1 can smoothly transition from the pusher sleeve 4.3 into the cylinder.

[0032] After disassembling the various sections of the sampling cylinder 1, when it is necessary to remove the soil core from each section, the pusher sleeve 4.3 is overlapped at the top of any section of the sampling cylinder 1. The two rods are inserted into the two holes 1.5 at the top of the cylinder to make the pusher sleeve 4.3 coaxial with the cylinder of the sampling cylinder 1. The circular pusher plate 4.1 can be easily inserted into the pusher sleeve 4.3 from the top. The circular pusher plate 4.1 then transitions from the pusher sleeve 4.3 into the cylinder to push out the soil core from the cylinder.

Claims

1. A soil animal quantitative sampling device, comprising a sampling tube (1), characterized in that: The sampling cylinder (1) is assembled from a lower cylinder (1.1), multiple intermediate cylinders (1.2), and an upper cylinder (1.3) connected in series. Connecting rings (1.4) are provided between the lower cylinder (1.1) and the intermediate cylinders (1.2), between two adjacent intermediate cylinders (1.2), and between the intermediate cylinder (1.2) and the upper cylinder (1.3). Each connecting ring (1.4) is composed of two semicircular rings (1.4.1). The inner diameters of the lower cylinder (1.1), intermediate cylinders (1.2), upper cylinder (1.3), and semicircular rings (1.4.1) are equal. A perforated plate (1.6) is provided on the outer wall of the middle portion of each semicircular ring (1.4.1). The top of the lower cylinder (1.1)... The outer side wall, the outer side walls at both ends of each intermediate cylinder (1.2), and the outer side wall at the bottom of the upper cylinder (1.3) are provided with two symmetrical holes (1.5) along the central axis. The holes (1.5) at the top of the lower cylinder (1.1) and the holes (1.5) at the top of each intermediate cylinder (1.2) are provided with internal threads. The adjacent lower cylinder (1.1), connecting ring (1.4) and intermediate cylinder (1.2), the adjacent intermediate cylinder (1.2), connecting ring (1.4) and intermediate cylinder (1.2), and the adjacent intermediate cylinder (1.2), connecting ring (1.4) and upper cylinder (1.3) are all detachably connected by bolts (1.7). It also includes a cutter (3), one end of which is a semi-circular structure with a diameter equal to the inner diameter of the semi-circular ring (1.4.1). The cutter (3) can be inserted into the sampling tube (1) from a semi-circular ring (1.4.1) pulled out from the sampling tube (1) to cut the soil between two adjacent sections of the tube.

2. The soil animal quantitative sampling device according to claim 1, characterized in that: The thickness of the semicircular ring (1.4.1) is 2~5mm, and the thickness of the cutter (3) is not greater than the thickness of the semicircular ring (1.4.1).

3. The soil animal quantitative sampling device according to claim 1, characterized in that: The semi-circular ring (1.4.1) has a transverse through-hole (1.8) on its perforated plate (1.6).

4. The soil animal quantitative sampling device according to claim 1, characterized in that: The hole seat (1.5) is a block structure with a right-angled trapezoidal vertical cross-section.

5. The soil animal quantitative sampling device according to claim 1, characterized in that: The top outer wall of the upper cylinder (1.3) is provided with two handles (2) symmetrical along the central axis.

6. The soil animal quantitative sampling device according to claim 1, characterized in that: The sampling device also includes a core pusher mechanism (4), which includes a circular core pusher plate (4.1) and a T-shaped pusher rod (4.2). The bottom end of the T-shaped pusher rod (4.2) is fixed at the center of the circular core pusher plate (4.1), and the outer diameter of the circular core pusher plate (4.1) is equal to the inner diameter of the sampling cylinder (1).

7. The soil animal quantitative sampling device according to claim 6, characterized in that: The core-pushing mechanism (4) also includes a core-pushing sleeve (4.3), the inner diameter of the bottom end of the core-pushing sleeve (4.3) is equal to the inner diameter of the circular core-pushing plate (4.1), and its top end is flared.

8. The soil animal quantitative sampling device according to claim 7, characterized in that: The bottom outer wall of the pusher sleeve (4.3) is provided with ear plates (4.4) symmetrical along the central axis, and each ear plate (4.4) is provided with a plug rod (4.5).

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