Device for extracting plant tissues in soil

Abstract

The utility model relates to the technical field of sampling and screening, and particularly discloses a device for extracting plant tissues in soil, which comprises a sieve tray, a soil screening cone and a support frame which are sequentially arranged from top to bottom, coarse sieve holes are arranged at the bottom of the sieve tray, a funnel is connected to the bottom of the sieve tray, the soil screening cone with a hollow structure is arranged at the upper end of the support frame, and the funnel is connected with the soil screening cone. The soil screening cone is of a conical structure, the cone tip of the soil screening cone is inserted into the funnel from the bottom, the lower end of the soil screening cone is connected with an annular sample receiving table, fine screening holes are formed in the side walls of the soil screening cone and the sample receiving table, and a vibration motor is arranged in the supporting frame; according to the utility model, plant tissues in a soil sample can be directly screened and extracted on site, so that not only is the problem that the soil sample is inconvenient to carry solved, but also experimenters can conveniently and directly place the obtained plant tissues into a cracking test tube for sealing and storage on site, the samples are prevented from being polluted in the transportation process, and the accuracy of DNA detection is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling and screening, in particular to a device for extracting plant tissues from soil. Background Art

[0002] Screening plant tissue in the soil at the crime scene and extracting and preserving DNA can significantly speed up the investigation process.

[0003] Currently, plant tissue extraction from soil involves using a sampler to obtain a portion of soil. This sample is then transported back to the laboratory in a storage bag. The plant tissue in the soil sample is then screened for DNA extraction and testing. Problems with this existing method include: first, the need to collect samples from multiple locations results in a large number of samples. To ensure sufficient plant tissue in the soil, as many samples as possible must be collected at a time, resulting in the need to carry a large number of soil samples, which is very inconvenient. Second, the sampling process involves operations such as sampling, bagging, transporting, and pouring the sample, which can easily lead to sample contamination and affect the final test results. Utility Model Content

[0004] The utility model is aimed at the above-mentioned deficiencies in the existing technology and provides a device for extracting plant tissue from soil, which can directly screen and extract plant tissue from soil samples on site. It not only solves the problem of the inconvenience of carrying soil samples, but also enables experimenters to conveniently place the obtained plant tissue directly into a lysis tube for sealing on site, thus avoiding contamination during sample transportation, improving the accuracy of DNA testing, and facilitating subsequent experimental operations.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A device for extracting plant tissue from soil comprises a sieve plate, a sieve cone and a support frame arranged in sequence from top to bottom, wherein the bottom of the sieve plate is provided with coarse sieve holes, the bottom of the sieve plate is connected to a funnel, the upper end of the support frame is provided with a sieve cone with a hollow structure, the funnel is connected to the sieve cone, the sieve cone is a conical structure, the tip of the sieve cone is inserted into the funnel from the bottom, a gap is provided between the inner wall of the funnel and the outer wall of the sieve cone, the lower end of the sieve cone is connected to an annular sample receiving platform, the side walls of the sieve cone and the sample receiving platform are both provided with fine sieve holes, and a vibration motor is provided in the support frame.

[0007] Preferably, the distance between the inner wall of the funnel and the outer side wall of the soil screening cone is not less than the diameter of the coarse screen hole.

[0008] Preferably, an upper support cylinder is provided on the side wall of the soil screening cone, and a support leg plugged into the support cylinder is provided on the side wall of the funnel.

[0009] Preferably, a conical guide plate is provided below the soil screening cone, the bottom of the guide plate is fixed to the support frame, a lower support tube is provided at the upper end of the guide plate, and a support rod connected to the lower support tube is connected inside the soil screening cone.

[0010] Preferably, an anti-sliding block is provided at the bottom of the support frame.

[0011] Preferably, a retaining edge is provided at the outer edge of the sample receiving platform.

[0012] Preferably, a test tube holder is provided inside the support frame.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model can directly screen and extract plant tissues from soil samples on site, which not only solves the problem of the inconvenience of carrying soil samples, but also enables experimenters to directly place the obtained plant tissues into lysis tubes for sealing on site, avoiding contamination during sample transportation, improving the accuracy of DNA testing, and facilitating subsequent experimental operations.

[0015] 2. The sieve plate and soil sieve cone of the utility model are both detachable structures, which facilitates cleaning. At the same time, after disassembly, the cleaning can be more thorough, avoiding cross contamination during the next sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is the main view of the utility model;

[0018] Figure 3 Schematic diagram of the structure of the soil screening cone Figure 1 ;

[0019] Figure 4 Schematic diagram of the structure of the soil screening cone Figure 2 ;

[0020] Figure 5 Schematic diagram of the structure of the guide plate;

[0021] In the figure: 1- sieve plate; 101- coarse sieve hole; 102- funnel; 103- support leg; 2- soil sieve cone; 201- sample receiving platform; 202- fine sieve hole; 203- upper support cylinder; 204- support rod; 205- retaining edge; 3- guide plate; 301- lower support cylinder; 4- support frame; 401- anti-sliding block; 402- test tube holder; 5- vibration motor; 6- test tube. DETAILED DESCRIPTION

[0022] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0023] like Figure 1 、 Figure 2 As shown, a plant tissue extraction device in soil includes a sieve plate 1, a soil sieve cone 2 and a support frame 4 arranged in sequence from top to bottom. A vibration motor 5 is provided in the support frame 4, and an anti-sliding block 401 is provided at the bottom of the support frame 4.

[0024] The edge of the sieve plate 1 is provided with a retaining edge to prevent the soil sample from falling during vibration. The bottom of the sieve plate 1 is provided with a coarse sieve hole 101, which can screen out large stones, clods of soil, and large branches and leaves in the soil sample. The bottom of the sieve plate 1 is connected with a funnel 102, and the upper end of the support frame 4 is provided with a hollow structure of the sieve cone 2. The funnel 102 is connected to the sieve cone 2. The sieve cone 2 is a conical structure. The tip of the sieve cone 2 is inserted into the funnel 102 from the bottom. There is a distance between the funnel 102 and the cone tip to ensure that the soil falling from the sieve plate 1 can fall on the sieve cone 2 for screening. Secondary screening: the lower end of the soil screening cone 2 is connected to a ring-shaped sample receiving platform 201. Fine sieve holes 202 are provided on the side walls of the soil screening cone 2 and the sample receiving platform 201. Fine soil is screened out from the fine sieve holes 202, and relatively small stones and soil blocks roll down along the soil screening cone 2 and fall from the sample receiving platform 201 under the action of inertia. Smaller plant tissues, such as small broken leaves and branches, etc., will slowly slide down along the soil screening cone 2 and remain on the sample receiving platform 201 due to their relatively light weight. The small broken leaves, branches and other plant tissues remaining on the sample receiving platform 201 are the samples required for the experiment.

[0025] In order to prevent the required plant samples from falling from the sample receiving platform 201, a small retaining edge 205 is provided at the outer edge of the sample receiving platform 201. The retaining edge 205 has a low height and can not only block plant tissues such as leaves, but also ensure that gravel and broken soil blocks roll off.

[0026] The distance between the inner wall of the funnel 102 and the outer wall of the soil screening cone 2 is not less than the diameter of the coarse screen hole 101, ensuring that the soil sample under the sieve can fall smoothly onto the soil screening cone 2.

[0027] In order to improve the convenience of cleaning the device, the sieve plate 1 and the soil sieve cone 2 are both detachable structures, specifically:

[0028] like Figure 3 As shown, an upper support cylinder 203 is provided on the side wall of the soil screening cone 2, and a support leg 103 is provided on the side wall of the funnel 102 to be plugged into the support cylinder;

[0029] A conical guide plate 3 is provided below the soil screening cone 2. The bottom of the guide plate 3 is fixed to the support frame 4, which can scatter the fine soil under the sieve to the surroundings and avoid falling on the support frame 4.

[0030] like Figure 5 As shown, a lower support cylinder 301 is provided at the upper end of the guide plate 3. Figure 4 As shown, a support rod 204 is connected to the soil screening cone 2 and is plugged into the lower support tube 301.

[0031] During installation, first install the soil screening cone 2 and then install the sieve plate 1, and install them in sequence from bottom to top.

[0032] The support frame 4 is a two-layer structure, divided into an upper support plate and a lower support plate. The vibration motor 5 is fixed to the bottom of the upper support plate. The upper end of the lower support plate is provided with a test tube holder 402, which can be used to store test tubes 6 (with caps) containing lysis solution. After screening plant samples, it is convenient for the experimenter to quickly select the sample, place it in the test tube, and seal it, avoiding contamination. Of course, the test tube can also be placed on the test tube holder 402 of the present application. During the screening process of plant samples, the experimenter can hold the test tube containing lysis solution and take the sample after the screening is completed.

[0033] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A device for extracting plant tissue from soil, characterized in that: It includes a sieve plate, a soil sieve cone and a support frame arranged in sequence from top to bottom. The bottom of the sieve plate is provided with coarse sieve holes, the bottom of the sieve plate is connected to a funnel, the upper end of the support frame is provided with a hollow soil sieve cone, the funnel is connected to the soil sieve cone, the soil sieve cone is a conical structure, the tip of the soil sieve cone is inserted into the funnel from the bottom, there is a gap between the inner wall of the funnel and the outer wall of the soil sieve cone, the lower end of the soil sieve cone is connected to a ring-shaped sample receiving platform, the side walls of the soil sieve cone and the sample receiving platform are provided with fine sieve holes, and a vibration motor is provided in the support frame.

2. The device for extracting plant tissue from soil according to claim 1, wherein: The distance between the inner wall of the funnel and the outer side wall of the soil screening cone is not less than the diameter of the coarse screen hole.

3. The device for extracting plant tissue from soil according to claim 1, wherein: An upper support cylinder is provided on the side wall of the soil screening cone, and a support leg plugged into the support cylinder is provided on the side wall of the funnel.

4. The device for extracting plant tissue from soil according to claim 1, wherein: A conical guide plate is provided below the soil screening cone, the bottom of the guide plate is fixed to the support frame, the upper end of the guide plate is provided with a lower support cylinder, and a support rod plugged into the lower support cylinder is connected to the soil screening cone.

5. The device for extracting plant tissue from soil according to claim 1, wherein: An anti-sliding block is provided at the bottom of the support frame.

6. The device for extracting plant tissue from soil according to claim 1, wherein: A retaining edge is provided at the outer edge of the sample receiving platform.

7. The device for extracting plant tissue from soil according to claim 1, wherein: A test tube support is provided inside the support frame.

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