Multi-cavity layered sample collection device

Abstract

The utility model relates to the field of sample collection, and discloses a multi-chamber layered sample collection device, which comprises a collection rod, a plurality of layers, a plurality of layers and a plurality of layers, the collection rod is internally provided with a cavity extending along the axial direction of the collection rod, and the collection rod is used for being inserted into a medium of a to-be-collected sample; the number of the partition plates is at least two, the partition plates are installed in the cavity of the collecting rod, the partition plates divide the cavity into a plurality of collecting chambers, and each collecting chamber is used for collecting samples of different depth layers. According to the soil sampling device, the sampling rod is directly fed into different depths of soil for sampling, so that the soil sampling device can be accurately positioned to a specific depth layer, sampling is directly started aiming at a target depth, the sampling efficiency is improved, the cavity of the sampling rod is divided into a plurality of mutually independent sampling chambers by the partition plates, and each sampling chamber corresponds to one depth layer, so that the sampling efficiency is improved. In the collecting process, all the collecting chambers are completely independent, and mixing of samples in different depth layers is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of sample collection, and in particular to a multi-chamber layered sample collection device. Background Technology

[0002] In fields such as environmental monitoring, geological surveys, agricultural ecology research, and soil pollution remediation, stratified soil sampling is a key technique for obtaining information on the physicochemical properties, pollutant distribution, and biological characteristics of soil at different depths. For example, in contaminated site investigations, it is necessary to accurately collect samples from different depths of contaminated layers to assess pollutant migration patterns; in agricultural soil analysis, it is necessary to obtain samples from the topsoil, plow pan, and parent material layers to study nutrient distribution and root activity characteristics. Soil sampling devices primarily achieve sample collection through physical insertion.

[0003] Most mainstream soil stratification sampling devices currently employ a bottom-open cavity structure. Their core design involves an open sampling tube at the bottom, connected to a drive mechanism (such as a hydraulic rod or rotating handle) at the top, allowing for sample collection through vertical insertion into the soil. Typical examples include columnar samplers and auger samplers. The sampling process involves the soil entering the sampling tube cavity from the bottom opening when the device is inserted. As the insertion depth increases, the sample stacks inside the tube, and finally, a lifting device collects the entire columnar sample.

[0004] Existing devices can only sample sequentially from the surface downwards, requiring the upper soil layer to be collected before obtaining samples from the lower layer. They cannot directly transport the sampling device to the target depth before initiating sampling. Utility Model Content

[0005] To solve the problems mentioned above, this utility model is implemented through the following technical solution.

[0006] A multi-chamber layered sample collection device includes: a collection rod having an axially extending cavity inside, the collection rod being inserted into a medium containing a sample; at least two partition plates installed within the cavity of the collection rod, the partition plates dividing the cavity into multiple collection chambers, each collection chamber being used to collect samples at different depths; an inlet located on the collection rod, with at least one inlet corresponding to each collection chamber; and a collection plate covering the inlet, one end of the collection plate being installed on the inner wall of the inlet, and the other end extending outward from the inlet.

[0007] Preferably, the collecting plate includes: a guide plate installed inside the feed inlet, and a collecting port is provided between the guide plate and the collecting plate.

[0008] Preferably, the acquisition plate further includes: a mounting base installed inside the acquisition chamber; a rotating plate installed on the mounting base; a guide plate connected to the rotating plate; and the rotating plate is configured to rotate unidirectionally on the mounting base.

[0009] Preferably, an elastic element is connected to the mounting base, and the rotating plate is connected to the elastic element.

[0010] Preferably, the sampling rod has at least two sampling holes, and each sampling chamber corresponds to at least one sampling hole.

[0011] Preferably, the sampling rod includes a cover plate, which is detachably installed inside the sampling hole.

[0012] Preferably, the sampling rod further includes a drill bit, which is installed at the end of the sampling rod.

[0013] Preferably, the drill bit is helical.

[0014] This invention provides a multi-chamber stratified sample collection device. Compared with the prior art, it has the following advantages: This solution can directly insert the collection rod into different depths of the soil for sampling. In this way, it can accurately locate a specific depth layer and directly start sampling at the target depth, improving sampling efficiency. Moreover, the partition plate divides the cavity of the collection rod into multiple independent collection chambers, each corresponding to a depth layer. During the collection process, each collection chamber is completely independent, effectively avoiding the mixing of samples from different depth layers. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram from another perspective of the present invention.

[0017] Figure 3 This is a schematic diagram of the data collection rod structure proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the cross-section of the data collection rod proposed in this utility model.

[0019] Figure 5 This is a schematic cross-sectional view of the acquisition plate, guide plate, and rotating plate proposed in this utility model.

[0020] Figure 6 This is a schematic diagram showing the open state of the guide plate and rotating plate proposed in this utility model.

[0021] Figure 7 This is a schematic diagram of the acquisition plate, guide plate, rotating plate and mounting base structure proposed in this utility model.

[0022] The attached figures are labeled as follows:

[0023] 100. Sampling rod; 101. Drill bit; 102. Sampling hole; 103. Cover plate; 104. Feed inlet;

[0024] 200. Divider;

[0025] 300. Acquisition board; 301. Guide board; 302. Rotating plate; 303. Mounting base; 304. Acquisition port. Detailed Implementation

[0026] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0027] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0028] Reference Figures 1-7 A multi-chamber layered sample collection device includes: a collection rod 100, wherein the collection rod 100 has a cavity extending axially inside, and the collection rod 100 is used to insert into the medium of the sample to be collected; at least two partition plates 200 are installed in the cavity of the collection rod 100, and the partition plates 200 divide the cavity into multiple collection chambers, each collection chamber being used to collect samples at different depths; an inlet 104 is opened on the collection rod 100, and each collection chamber corresponds to at least one inlet 104; and a collection plate 300 is covered at the inlet 104, one end of the collection plate 300 is installed on the inner wall of the inlet 104, and the other end extends outward from the inlet 104.

[0029] In this embodiment, the sampling rod 100 can be inserted into the soil at different depths for sampling, accurately collecting samples at different depths. The partition plate 200 divides the cavity of the sampling rod 100 into multiple independent sampling chambers, each corresponding to a specific depth layer for collecting samples from different depth layers. The partition plate 200 effectively avoids the mixing of samples from different depth layers during the sampling process, ensuring the representativeness of the samples and the accuracy of the test results. The spacing of the partition plate 200 can be adjusted according to specific sampling needs. The sampling plate 300 forms an inclined guide surface on the outside of the inlet 104. As the sampling rod 100 penetrates into the soil, it rotates continuously in a counterclockwise direction. When the sampling rod 100 penetrates to the required depth, it rotates in the opposite direction. The sampling plate 300 can collect the soil around the sampling rod 100 into the sampling port 304 area. By squeezing the guide plate 301, the guide plate 301 rotates at the inlet 104 and opens the inlet 104, allowing the sampled soil to enter the corresponding sampling chamber from the inlet 104.

[0030] The acquisition plate 300 includes: a guide plate 301 installed inside the feed inlet 104, with an acquisition port 304 between the guide plate 301 and the acquisition plate 300; a mounting base 303 installed inside the acquisition chamber; and a rotating plate 302 installed on the mounting base 303. The guide plate 301 is connected to the rotating plate 302, and the rotating plate 302 is configured to rotate unidirectionally on the mounting base 303.

[0031] An elastic element is connected to the mounting base 303, and the rotating plate 302 is connected to the elastic element. The rotating plate 302 and the mounting base 303 are connected by a bearing, allowing the rotating plate 302 to rotate flexibly. The elastic element is fixedly connected to the mounting base 303 at one end and to the rotating plate 302 at the other end. The elastic element is generally a tension spring, but a spring-loaded spring can also be used. The spring-loaded spring can be connected to the rotating shaft of the rotating plate 302. When the pressure applied to the collecting plate 300 by the external medium is greater than the tension of the elastic element, the collecting plate 300 rotates upwards around the pivot, opening the feed port 104 and allowing the sample to enter the collecting chamber. When the external pressure disappears, the tension of the elastic element causes the rotating plate 302 to reset, driving the collecting plate 300 to close the feed port 104, preventing the collected sample from flowing back and preventing external impurities from entering.

[0032] The sampling rod 100 has at least two sampling holes 102, and each sampling chamber corresponds to at least one sampling hole 102. The sampling holes 102 are evenly distributed at the positions of the sampling rod 100 corresponding to the sampling chambers, so as to facilitate the subsequent removal of samples from the sampling chambers.

[0033] The sampling rod 100 includes: a cover plate 103, which is detachably installed in the sampling hole 102; and a drill bit 101, which is installed at the end of the sampling rod 100. The drill bit 101 is spiral-shaped and made of high-hardness alloy steel, which enables the drill bit 101 to efficiently break up media such as soil and sediment when rotating, reducing the resistance when the sampling rod 100 is inserted, and at the same time, it can smoothly discharge the broken media, ensuring that the sampling rod 100 can smoothly penetrate to the target depth.

[0034] During use, a multi-chamber stratified sample collection device of appropriate specifications is selected according to sampling requirements. The operator holds the collection rod 100 or uses a mechanical device to vertically insert the collection rod 100, equipped with a spiral drill bit 101, into the medium to be collected. Since the rotation direction is opposite to the orientation of the collection port 304, the guide plate 301 is in the closed state, and the medium will not enter the collection chamber. During insertion, the collection rod 100 rotates continuously counterclockwise, and the spiral drill bit 101 efficiently breaks up the medium, helping the collection rod 100 to penetrate smoothly. When the collection rod 100 penetrates to the required specific depth, it stops further insertion. This depth layer becomes the target sampling depth layer, and the collection rod 100 rotates in the opposite direction. The collection plate 300, which originally covered the inlet 104 and formed an inclined guide surface on the outside of the inlet 104, now rotates in the same direction as the orientation of the collection port 304, collecting the soil around the collection rod 100 into the area of ​​the collection port 304. As the soil accumulates, it generates pressure on the collection plate 300, which is transmitted to the connection between the collection rod 100 and the collection port 304. When the pressure exerted by the external medium on the collection plate 300 is greater than the tension of the elastic element, the collection plate 300 rotates upward around the pin axis, causing the rotating plate 302 to rotate unidirectionally on the mounting base 303, thereby opening the feed port 104. The guide plate 301 rotates under the pressure within the feed port 104. Under the action of its own gravity and external pressure, the sampled soil enters the corresponding collection chamber through the collection port 304 between the guide plate 301 and the collection plate 300. The guide plate 301 plays a guiding and buffering role, ensuring that the sample enters the collection chamber smoothly and completes the collection of samples from different depth layers. The collection rod 100 is pulled out of the medium, and the operator unscrews the detachable cover plate 103 on the sampling hole 102 and uses appropriate tools to take out the sample from the sampling hole 102 corresponding to each collection chamber.

[0035] In summary, compared with existing technologies, it has the following beneficial effects:

[0036] This solution allows the sampling rod 100 to be directly inserted into different depths of the soil for sampling. In this way, it is possible to accurately locate a specific depth layer and directly start sampling at the target depth, which improves sampling efficiency. In addition, the partition plate 200 divides the cavity of the sampling rod 100 into multiple independent sampling chambers, each corresponding to a depth layer. During the sampling process, each sampling chamber is completely independent, which effectively avoids the mixing of samples from different depth layers.

[0037] The sampling rod 100 rotates counterclockwise continuously as it penetrates the soil, facilitating the breaking of the medium by the drill bit 101 and its smooth insertion. Upon reaching the target depth, it rotates in the opposite direction, allowing the sampling plate 300 to collect the surrounding soil into the sampling port 304 area. The feed port 104 is opened by squeezing the guide plate 301, allowing the soil to enter the sampling chamber. The rotation of the sampling rod 100 enables automatic sample collection.

[0038] Therefore, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the above disclosure, and it should be understood that in some cases, certain features of the present invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the present invention. The present invention is not intended to be limited to the specific terms used in the following claims and / or the specific embodiments disclosed as the best mode of carrying out the present invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present invention will be determined only by the appended claims.

Claims

1. A multi-chamber layered sample collection device, characterized in that, include: A collection rod (100) has a cavity extending along its axial direction inside, and the collection rod (100) is used to be inserted into the medium of the sample to be collected; At least two partition plates (200) are installed inside the cavity of the collection rod (100). The partition plates (200) divide the cavity into multiple collection chambers, each of which is used to collect samples from different depth layers. The feed inlet (104) is located on the collection rod (100), and each collection chamber corresponds to at least one feed inlet (104); A collection plate (300) is placed over the feed inlet (104). One end of the collection plate (300) is installed on the inner wall of the feed inlet (104), and the other end extends outward from the feed inlet (104).

2. The multi-chamber layered sample acquisition device according to claim 1, characterized in that, The acquisition board (300) includes: A guide plate (301) is installed inside the feed inlet (104), and a collection port (304) is provided between the guide plate (301) and the collection plate (300).

3. The multi-chamber layered sample acquisition device according to claim 2, characterized in that, The acquisition board (300) also includes: Mounting bracket (303) is installed inside the data acquisition chamber; A rotating plate (302) is mounted on a mounting base (303), and a guide plate (301) is connected to the rotating plate (302). The rotating plate (302) is configured to rotate unidirectionally on the mounting base (303).

4. The multi-chamber layered sample acquisition device according to claim 3, characterized in that, An elastic element is connected to the mounting base (303), and the rotating plate (302) is connected to the elastic element.

5. The multi-chamber layered sample acquisition device according to claim 1, characterized in that, The sampling rod (100) has at least two sampling holes (102), and each sampling chamber corresponds to at least one sampling hole (102).

6. The multi-chamber layered sample acquisition device according to claim 5, characterized in that, The data acquisition rod (100) includes: The cover plate (103) is detachably installed inside the sampling port (102).

7. The multi-chamber layered sample acquisition device according to claim 1, characterized in that, The data acquisition rod (100) also includes: A drill bit (101) is installed at the end of the collection rod (100).

8. The multi-chamber layered sample acquisition device according to claim 7, characterized in that, The drill bit (101) is spiral-shaped.

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