Soil seed bank sampler

Abstract

The utility model relates to the technical field of sampling devices, and discloses a soil seed bank sampler which comprises a sampling barrel, a pressing rod used for downward pressing is slidably installed at the top of the sampling barrel, and the bottom of the pressing rod penetrates through the sampling barrel and is fixedly provided with a discharging plate used for ejection. A threaded groove used for connection is formed in the inner wall face of the bottom of the sampling barrel, the bottom of the sampling barrel is further in threaded connection with an extending barrel through the threaded groove, and the device further comprises a sampling assembly. And the device can be conveniently adjusted according to the depth requirement of soil sampling, so that the device is more convenient to use during sampling of a soil seed bank and is more practical.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices, in particular to a soil seed bank sampler. Background Art

[0002] The soil seed bank refers to the sum of all active seeds existing in the litter on the soil surface and in the soil. It is of great significance to plant ecology, population survival, reproduction and spread, restoration of degraded ecosystems and vegetation renewal. The loess soil seed bank is an important research object, and the accuracy and efficiency of its sampling technology directly affect the reliability of subsequent research.

[0003] In the prior art, there are a variety of methods for sampling soil seed banks, such as a soil seed bank stratified sampler proposed in a Chinese patent (patent publication number CN113267374A). The sampler includes a handle, a connecting rod, a square steel column, and a bulldozer. The sample soil in the square steel column is pushed out by a bulldozer. Although this sampler solves the problem of difficult sampling of sand dune soil seed banks in desert areas to a certain extent and makes up for the defect that traditional samplers have no soil discharge function, its structure is complex. For special soils such as loess soil that are porous, loose in structure and have many cracks in the vertical direction, there may still be problems such as soil falling due to loose structure during the sampling process, resulting in loss or contamination of samples.

[0004] In order to solve the above problems, we propose a soil seed bank sampler to facilitate the sampling of loess soil while avoiding the scattering of samples when the soil is taken out, and to facilitate the convenient adjustment of the device according to the depth requirements of soil sampling, which is more convenient for use in soil seed bank sampling. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a soil seed bank sampler to solve the above-mentioned problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a soil seed bank sampler, comprising a sampling barrel, a pressure rod for pressing down is slidably installed on the top of the sampling barrel, and a discharge plate for ejection is fixedly installed at the bottom of the pressure rod through the sampling barrel, a threaded groove for connection is opened on the inner wall surface of the bottom of the sampling barrel, and the bottom of the sampling barrel is also threadedly connected to an extension barrel through the threaded groove, and further comprising:

[0009] The sampling assembly is arranged at the bottom of the extension tube, and is used to break the soil for sampling and prevent the soil sample from being lost and contaminated due to scattering when being extracted.

[0010] Preferably, a plurality of adjustment grooves for installation are equidistantly formed on the outer wall surface of the pressure rod, and a limiting plate for limiting is inserted and installed inside the adjusting groove.

[0011] Preferably, a conflict groove matching with the limiting plate is provided at the top of the sampling tube at a position corresponding to the limiting plate.

[0012] Preferably, an extension groove for connection is provided at the bottom of the extension tube, and a thread is provided inside the extension groove.

[0013] Preferably, the sampling assembly includes a base tube, a blade edge and an inner corner block. The base tube is threadedly connected to the extension tube through an extension groove. The bottom of the base tube is fixedly installed with a blade edge for facilitating the insertion of samples, and the blade edge is serrated as a whole. A number of inner corner blocks are also equidistantly hingedly installed on the inner wall surface of the base tube.

[0014] Preferably, a bearing block for bearing and limiting is fixedly installed at a position on the inner wall surface of the bottom tube corresponding to the bottom of the inner corner block, and the bottom of the inner corner block is in the shape of a prismatic protrusion.

[0015] Preferably, one side of the extension tube is provided with a plug-in slot for plugging in, and a sampling plate for segmented sampling is plugged in and installed inside the plug-in slot.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a soil seed bank sampler, which has the following beneficial effects:

[0018] 1. The soil seed bank sampler can be installed with a limit plate for limiting in the adjusting groove according to the needs through the setting of the adjusting groove and the limit plate, so as to adjust the length of the pressure rod extending outside, which is convenient for use when pressing down for sampling.

[0019] 2. The soil seed bank sampler is easy to insert into the soil for sampling through the setting of the sampling component. Several inner corner blocks are equidistantly hingedly installed on the inner wall of the bottom cylinder, which can effectively prevent the soil sample from scattering after the sampling is completed. This design not only improves the sampling efficiency, but also ensures the integrity of the soil sample during the extraction process, avoiding the loss and contamination caused by the scattering of samples.

[0020] 3. The soil seed bank sampler, through the arrangement of the inner corner block and the bearing block, helps to better fix and carry the soil sample during the sampling process. When the inner corner block with the prism-shaped protrusion is inserted into the soil, it is squeezed and fits with the inner wall surface of the bottom tube, and the prism-shaped protrusion makes it easy to break the soil and facilitate sampling. At the same time, when the device is pulled out as a whole, the inner corner block will slide down under the action of gravity and the falling of the soil, so that it will be supported by the bearing block, and the bottom tube will be blocked to prevent the soil sample from falling, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the sampling tube of the utility model;

[0023] Figure 3 This is a schematic diagram of the extension tube structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the sampling component of the utility model.

[0025] In the figure: 1. sampling tube; 2. pressure rod; 3. discharge plate; 4. threaded groove; 5. extension tube; 6. adjustment groove; 7. limit plate; 8. interference groove; 9. extension groove; 10. bottom tube; 11. blade edge; 12. inner angle block; 13. bearing block; 14. plug-in groove; 15. sampling plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-4 A soil seed bank sampler comprises a sampling tube 1, a pressure rod 2 for pressing down is slidably mounted on the top of the sampling tube 1, and a discharge plate 3 for ejection is fixedly mounted on the bottom of the pressure rod 2 through the sampling tube 1, a thread groove 4 for connection is provided on the inner wall surface of the bottom of the sampling tube 1, and an extension tube 5 is threadedly connected to the bottom of the sampling tube 1 through the thread groove 4, and further comprises:

[0028] The sampling assembly is arranged at the bottom of the extension tube 5. The sampling assembly is used to break the soil for sampling and prevent the soil sample from being lost and contaminated due to scattering when it is extracted.

[0029] Furthermore, a number of adjustment grooves 6 for installation are equidistantly provided on the outer wall surface of the pressure rod 2, and a limit plate 7 for limiting is installed inside the adjustment groove 6. By setting the adjustment groove 6 and the limit plate 7, the limit plate 7 for limiting can be installed inside the adjustment groove 6 as needed, thereby adjusting the length of the pressure rod 2 extending outside, which is convenient for use when pressing down for sampling.

[0030] Furthermore, a matching interference groove 8 is provided at the position of the limit plate 7 corresponding to the top of the sampling tube 1. Through the setting of the interference groove 8, when the downward pressure operation is performed, this design can ensure the close fit between the sampler limit plate 7 and the interference groove 8, thereby preventing sampling errors caused by looseness or sliding, thereby improving the accuracy and success rate of sampling.

[0031] Furthermore, an extension groove 9 for connection is provided at the bottom of the extension tube 5, and a thread is provided inside the extension groove 9. Through the provision of the extension groove 9, the connection part of the sampler is made more firm and stable. The threaded connection is not only easy to disassemble and assemble, but also can provide sufficient fastening force during connection, thereby ensuring a reliable connection between the sampling component and the main structure, helping to prevent sample loss or contamination due to loose connection during the sampling process, and improving the quality and reliability of sampling.

[0032] Furthermore, the sampling assembly includes a bottom cylinder 10, a blade edge 11 and an inner corner block 12. The bottom cylinder 10 is threadedly connected to the extension cylinder 5 through the extension groove 9. The bottom of the bottom cylinder 10 is fixedly installed with a blade edge 11 for convenient insertion of sampling, and the blade edge 11 is serrated as a whole. A number of inner corner blocks 12 are equidistantly hingedly installed on the inner wall surface of the bottom cylinder 10. Through the setting of the sampling assembly, it is convenient to insert the soil for sampling. The several inner corner blocks 12 equidistantly hingedly installed on the inner wall surface of the bottom cylinder 10 can effectively prevent the soil sample from scattering after the sampling is completed. This design not only improves the sampling efficiency, but also ensures the integrity of the soil sample during the extraction process, avoiding the loss and contamination problems caused by the scattering of samples.

[0033] Furthermore, a bearing block 13 for bearing and limiting is fixedly installed at a position on the inner wall surface of the bottom cylinder 10 corresponding to the bottom of the inner corner block 12, and the bottom of the inner corner block 12 is a prismatic protrusion. The arrangement of the inner corner block 12 and the bearing block 13 helps to better fix and carry the soil sample during the sampling process. When the prismatic protrusion of the inner corner block 12 is inserted into the soil, it is squeezed and fits against the inner wall surface of the bottom cylinder 10, and the prismatic protrusion makes it easy to break the soil for sampling. At the same time, when the device is pulled out as a whole, the inner corner block 12 will slide down under the action of gravity and the falling of the soil, so that it will be supported by the bearing block 13 to block the bottom cylinder 10 and prevent the soil sample from falling, which is more practical.

[0034] Furthermore, one side of the extension tube 5 is provided with a plug-in slot 14 for plugging in, and a sampling plate 15 for segmented sampling is installed inside the plug-in slot 14. Through the arrangement of the plug-in slot 14 and the sampling plate 15, by plugging the sampling plate 15 on different extension tubes 5 through the plug-in slot 14, researchers can easily obtain soil samples from different depths or different areas, thereby gaining a more comprehensive understanding of the situation of the soil seed bank and providing more accurate and reliable data support for scientific research.

[0035] Instructions

[0036] When in use, first install several extension tubes 5 in sequence according to the sampling depth requirements, until the overall length of the device reaches the sampling requirements, the bottom tube 10 can be threadedly connected with the extension groove 9 opened and closed at the bottom of the extension tube 5, and the overall installation is completed. When in use, the device is placed at a selected position, and then the limit plate 7 for limiting is installed by plugging into the adjustment groove 6, and the device is inserted into the soil as a whole by pressing the pressure rod 2 downward. When in use, the soil can be split through the blade edge 11 fixedly installed at the bottom of the bottom tube 10 by rotation, and when pressing down, the soil will lift the inner corner block 12 hingedly installed on the inner wall surface of the bottom tube 10, so that the soil enters the interior of the extension tube 5. After the sampling is completed, the device is pulled up When the device is taken out, the inner corner block 12 will be re-expanded under the impact of gravity and the sliding of the internal soil until it conflicts with the supporting block 13. Then, several inner corner blocks 12 will block to prevent the sample obtained from the extension tube 5 from falling and being contaminated. After the device is taken out, the sampling plate 15 can be inserted into the inside of the plug-in groove 14 to segment the soil sample according to the depth. Then, the extension tube 5 of the corresponding depth can be removed to obtain the appropriate sample. Through the mutual cooperation between the above-mentioned structures, the device can avoid the scattering of samples when the soil is taken out while facilitating the sampling of loess soil, and is convenient for convenient adjustment of the device according to the depth requirements of soil sampling, which is more convenient for use in soil seed bank sampling and more practical.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil seed bank sampler, comprising a sampling barrel (1), a pressure rod (2) for pressing downwards being slidably mounted on the top of the sampling barrel (1), and a discharge plate (3) for ejection being fixedly mounted on the bottom of the pressure rod (2) penetrating the sampling barrel (1), a threaded groove (4) for connection being provided on the inner wall surface of the bottom of the sampling barrel (1), and an extension barrel (5) being threadedly connected to the bottom of the sampling barrel (1) through the threaded groove (4), characterized in that: Also includes: A sampling assembly is arranged at the bottom of the extension tube (5), and is used to break the soil for sampling and to prevent the soil sample from being lost and contaminated due to scattering when it is extracted.

2. A soil seed bank sampler according to claim 1, characterized in that: A plurality of adjustment grooves (6) for installation are equidistantly provided on the outer wall surface of the pressure rod (2), and a limit plate (7) for limiting position is inserted and installed inside the adjustment groove (6).

3. A soil seed bank sampler according to claim 2, characterized in that: A conflict groove (8) that fits with the limiting plate (7) is provided at the top of the sampling tube (1) at a position corresponding to the limiting plate (7).

4. A soil seed bank sampler according to claim 1, characterized in that: An extension groove (9) for connection is provided at the bottom of the extension tube (5), and a thread is provided inside the extension groove (9).

5. A soil seed bank sampler according to claim 4, characterized in that: The sampling assembly comprises a base tube (10), a blade edge (11) and an inner corner block (12); the base tube (10) is threadedly connected to the extension tube (5) via an extension groove (9); a blade edge (11) for convenient insertion of a sample is fixedly mounted on the bottom of the base tube (10); the blade edge (11) is serrated in shape as a whole; and a plurality of inner corner blocks (12) are hingedly mounted at equal distances on the inner wall surface of the base tube (10).

6. A soil seed bank sampler according to claim 5, characterized in that: A bearing block (13) for bearing and limiting is fixedly mounted on the inner wall surface of the bottom tube (10) at a position corresponding to the bottom of the inner corner block (12), and the bottom of the inner corner block (12) is in the shape of a prism-shaped protrusion.

7. A soil seed bank sampler according to claim 1, characterized in that: One side of the extension tube (5) is provided with a plug-in slot (14) for plugging in, and a sampling plate (15) for segmented sampling is plugged in and installed inside the plug-in slot (14).

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