Layered sampling device

Abstract

The utility model discloses a stratified sampling device, which relates to the technical field of sampling detection, and comprises a support mechanism and a plurality of groups of adjusting mechanisms, the end part of a radial frame is coaxial with a circular shaft, the radial frame is rotatably and slidably arranged on the circular shaft of the support mechanism, a sliding block is slidably arranged on the radial frame along the radial direction of the circular shaft, and a longitudinal rod frame is longitudinally and slidably arranged on the sliding block. Two sampling plates are detachably and symmetrically arranged at the bottom of the longitudinal rod frame, a sampling assembly is arranged on one sampling plate, a sampling pipe is arranged on the other sampling plate, a sealing rod is fixedly installed on the sealing plug and slidably installed on the sampling plate, and a sealing spring is arranged between the sealing plug and the sampling plate. The sampling rod controls the contact between the sealing plug and the end part of the sampling tube. The sampling device disclosed by the utility model has the beneficial effects that sampling is carried out at different positions and heights, the consistency and repeatability of each time of sampling are ensured, samples are prevented from being polluted, and the accuracy of a sampling result is ensured.

Description

Technical Field

[0001] This utility model relates to the field of sampling and testing technology, and in particular to a stratified sampling device. Background Technology

[0002] Reactors are reaction vessels widely used in industries such as manufacturing and chemical processing. Their primary purpose is to conduct chemical reactions and material transformations. During the reaction process, parameters such as temperature, pressure, and stirring speed inside the reactor all affect the reaction process.

[0003] Because the reactions inside the reactor are quite complex, the reactions occurring at different heights and locations within the reactor are not the same. For example, the degree of reaction at the center of the reactor differs from that at the periphery. In order to detect the degree of reaction or changes in the reaction inside the reactor, it is necessary to sample the reactants at different locations inside the reactor.

[0004] Existing sampling devices can only perform surface sampling or sampling through sampling ports on the reactor. They cannot sample the center of the reactor or different locations inside, nor can they control the sampling location and depth. Furthermore, samples are easily contaminated or cross-interfered during the sampling process, making it impossible to guarantee the accuracy of the sampling results. Utility Model Content

[0005] The purpose of this invention is to provide a stratified sampling device to solve the technical problems mentioned in the background art, such as the inability to control the sampling position and depth, and the inaccurate detection results caused by sample contamination or cross-interference during the sampling process.

[0006] To address the aforementioned technical problems, the present invention adopts the following technical solution: a layered sampling device, comprising a support mechanism and multiple sets of adjustment mechanisms. Each adjustment mechanism includes a radial frame and a longitudinal frame. The end of the radial frame is coaxial with a circular shaft. One end of the radial frame is rotatably and slidably mounted on the circular shaft of the support mechanism. A slider is slidably mounted on the radial frame along the radial direction of the circular shaft. The longitudinal frame is slidably mounted longitudinally on the slider. Two sets of sampling plates are detachably and symmetrically arranged at the bottom of the longitudinal frame. One set of sampling plates is equipped with a sampling component, and the other set of sampling plates is equipped with a sampling tube. The sampling component includes a sealing plug and a sealing spring. A sealing rod is fixedly mounted on the sealing plug and slidably mounted on the sampling plate. The sealing spring is positioned between the sealing plug and the sampling plate. The sealing plug contacts and engages with the end of the sampling tube. A sampling rod is slidably mounted longitudinally inside the longitudinal frame, controlling the contact between the sealing plug and the end of the sampling tube.

[0007] Furthermore, the support mechanism includes an outer ring and a bracket. The bracket is disposed between the outer ring and the circular shaft, which are coaxial. Both ends of the bracket are fixedly mounted on the outer ring and the circular shaft, respectively. A shaft rail is provided on the circular shaft, and a ring rail is provided on the outer ring. One end of the radial bracket is rotatably mounted on the shaft rail of the circular shaft, and the other end of the radial bracket is rotatably and slidably mounted on the ring rail. By adjusting the position of the radial bracket on the circular shaft, both ends of the radial bracket rotate and slide around the circular shaft on the ring rail and the shaft rail, respectively, thereby rotating the radial bracket to the target sampling position.

[0008] Furthermore, the adjustment mechanism also includes multiple sets of adjustment components, which are disposed between the radial frame and the circular shaft. The radial frame has multiple sets of adjustment holes, with each set of adjustment holes corresponding to a set of adjustment components. Each adjustment component includes an adjustment ball and an adjustment spring. An adjustment rod is fixedly mounted on the adjustment ball, and the adjustment rod is slidably mounted on the adjustment hole of the radial frame. The adjustment spring is disposed between the adjustment ball and the radial frame. Multiple sets of adjustment grooves are evenly distributed on the circular shaft, with the adjustment ball engaging with the adjustment grooves. When adjusting the position of the radial frame on the circular shaft, the radial frame rotates and slides on the shaft's guide rail. During this process, the circular shaft pushes the adjustment ball, causing the adjustment rod to slide into the adjustment hole. The adjustment spring compresses, breaking the contact between the adjustment ball and the adjustment groove, until the radial frame is adjusted to the target position. The adjustment spring then extends, causing the adjustment ball and adjustment rod to slide into the adjustment groove, until the adjustment ball and adjustment groove re-engage, thereby limiting the position of the radial frame.

[0009] Furthermore, the adjustment mechanism also includes multiple sets of limiting components, symmetrically arranged between the slider and the radial frame. Each limiting component includes a limiting ball and a limiting spring. A limiting rod is fixedly mounted on the limiting ball, and the limiting rod is slidably mounted on the slider. The limiting spring is positioned between the limiting ball and the slider. Multiple sets of limiting grooves are sequentially arranged on the radial frame, with the limiting ball engaging with the limiting groove. When the slider is adjusted to its target position on the radial frame, it slides along the frame. During this process, the limiting spring compresses, breaking the contact between the limiting ball and the limiting groove. Until the slider reaches the target position, the limiting spring extends under its elastic action, causing the limiting ball and the limiting rod to move towards the limiting groove. The limiting ball then re-engages with the limiting groove, thereby limiting the slider's position on the radial frame.

[0010] Furthermore, the adjustment mechanism also includes multiple sets of positioning components symmetrically arranged between the slider and the longitudinal rod frame. Each positioning component includes a positioning ball and a positioning spring. A positioning rod is fixedly mounted on the positioning ball and slidably mounted on the slider. The positioning spring is positioned between the slider and the positioning ball. Multiple sets of positioning slots are sequentially arranged on the longitudinal rod frame, with the positioning ball engaging with the positioning slots. Adjusting the position of the longitudinal rod frame on the slider allows it to slide longitudinally. During this process, the longitudinal rod frame pushes the positioning ball, causing the positioning rod to move towards the slider. The positioning spring compresses, breaking the contact between the positioning ball and the positioning slot, until the longitudinal rod frame reaches the target position. Under the elastic action of the positioning spring, the positioning ball and positioning rod move towards the positioning slot until the positioning ball and positioning slot re-engage, thereby limiting the position of the longitudinal rod frame.

[0011] Furthermore, the sealing plug is shaped like a frustum, with the bottom of the sampling rod contacting and fitting against the side of the sealing plug. Under the elastic action of the sealing spring, the sealing plug easily seals the sampling tube, while simultaneously allowing the sampling rod to break contact between the sealing plug and the sampling tube.

[0012] Furthermore, the radius of the top of the sealing plug is r, the radius of the bottom of the sealing plug is R, and the inner diameter of the sampling tube is D. <D<R。

[0013] The advantages of this utility model compared with the prior art are: (1) The multiple adjustment mechanisms set in this utility model ensure the consistency and repeatability of each sampling, form a comparative test, and ensure the accuracy of the test results; (2) The adjustment component and the limiting component set in this utility model allow the diameter frame to rotate on the circular shaft. The adjustment component adjusts the position of the diameter frame and limits the position of the diameter frame. The limiting component limits the position of the slider on the diameter frame, ensuring the precise positioning of the sampling position and preventing deviation caused by movement during the sampling process; (3) The positioning component set in this utility model limits the position of the longitudinal rod frame on the slider, adjusts the sampling height, and performs layered sampling, which has a wide range of applications; (4) The sampling mechanism set in this utility model uses the sampling rod for auxiliary cooperation. The sampling rod controls the contact between the sealing plug and the end of the sampling tube, ensuring that only the substance at the target position is sampled, avoiding sample contamination or cross-interference, and ensuring the accuracy of the sampling results. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model from a first-view perspective.

[0015] Figure 2 This is the front view of the present invention.

[0016] Figure 3 This is a top view of the present invention.

[0017] Figure 4 for Figure 3Cross-sectional view along the AA direction.

[0018] Figure 5 for Figure 1 A magnified view of part B in the middle section.

[0019] Figure 6 for Figure 3 A magnified view of part C in the middle.

[0020] Figure 7 for Figure 4 A magnified view of part D in the middle.

[0021] Figure 8 for Figure 4 A magnified view of part E in the middle.

[0022] Reference numerals: 11-Outer ring; 12-Round shaft; 13-Bracket; 111-Ring rail; 121-Shaft rail; 122-Adjusting groove; 21-Diameter frame; 22-Slider; 23-Adjusting assembly; 24-Limiting assembly; 25-Longitudinal rod frame; 26-Sampling rod; 27-Positioning assembly; 211-Limiting groove; 212-Adjusting hole; 231-Adjusting ball; 232-Adjusting rod; 233-Adjusting spring; 241-Limiting ball; 242-Limiting rod; 243-Limiting spring; 251-Positioning groove; 252-Disassembly hole; 271-Positioning ball; 272-Positioning rod; 273-Positioning spring; 31-Sampling plate; 32-Sampling assembly; 33-Sampling tube; 321-Sealing plug; 322-Sealing rod; 323-Sealing spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] A stratified sampling device includes a support mechanism and multiple adjustment mechanisms. The adjustment mechanisms include a radial frame 21 and a longitudinal frame 25. The end of the radial frame 21 is coaxial with a circular shaft 12. One end of the radial frame 21 is rotatably and slidably mounted on the circular shaft 12 of the support mechanism. A slider 22 is slidably mounted on the radial frame 21 along the radial direction of the circular shaft 12. The longitudinal frame 25 is slidably mounted longitudinally on the slider 22. Two sets of sampling plates 31 are detachably and symmetrically arranged at the bottom of the longitudinal frame 25, one set of sampling plates 31 being equipped with a sampling component 32. Another set of sampling plates 31 is provided with sampling tubes 33. Sampling components 32 include sealing plugs 321 and sealing springs 323. Sealing rods 322 are fixedly installed on the sealing plugs 321 and are slidably installed on the sampling plates 31. Sealing springs 323 are disposed between the sealing plugs 321 and the sampling plates 31. The sealing plugs 321 and the end of the sampling tubes 33 are in contact and fit. A sampling rod 26 is slidably installed longitudinally inside the longitudinal rod frame 25. The sampling rod 26 controls the contact between the sealing plugs 321 and the end of the sampling tubes 33.

[0025] like Figure 1 , Figure 2 , Figure 4 , Figure 7 As shown, the support mechanism includes an outer ring 11, a circular shaft 12, and a bracket 13. The outer ring 11 and the circular shaft 12 are coaxial. The bracket 13 is disposed between the circular shaft 12 and the outer ring 11. One end of the bracket 13 is fixedly installed to the outer ring 11, and the other end of the bracket 13 is fixedly installed to the circular shaft 12. A ring rail 111 is provided on the outer ring 11, and a shaft rail 121 is provided on the circular shaft 12. Multiple sets of adjustment grooves 122 are evenly arranged on the circular shaft 12. Multiple sets of adjustment mechanisms are disposed on the circular shaft 12 and the outer ring 11. The number of adjustment mechanisms can be adjusted according to actual needs.

[0026] like Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 7As shown, the adjustment mechanism includes a diameter frame 21, a slider 22, an adjustment assembly 23, a limiting assembly 24, a longitudinal rod frame 25, a sampling rod 26, and a positioning assembly 27. The end of the diameter frame 21 is coaxial with the circular shaft 12. One end of the diameter frame 21 is rotatably and slidably mounted on the shaft rail 121 of the circular shaft 12, and the other end of the diameter frame 21 is rotatably and slidably mounted on the ring rail 111 of the outer ring 11. Multiple sets of adjustment assemblies 23 are arranged between the diameter frame 21 and the circular shaft 12. The diameter frame 21 is provided with multiple sets of adjustment holes 212, with each set of adjustment holes 212 corresponding to a set of adjustment assemblies 23. Each adjustment assembly 23 includes an adjustment ball 231, an adjustment rod 232, and an adjustment spring 233. The adjustment ball 231 and the adjustment rod 232 are fixedly installed, and the adjustment rod 232 is slidably mounted on the adjustment hole 212 of the diameter frame 21. The adjustment spring 233 is... The adjusting ball 231 is placed between the adjusting ball 231 and the adjusting frame 21. The adjusting spring 233 is slidably mounted on the adjusting rod 232. Multiple sets of adjusting grooves 122 are evenly arranged on the round shaft 12. The adjusting ball 231 contacts and engages with the adjusting grooves 122. When the adjusting frame 21 is positioned on the round shaft 12, the adjusting frame 21 rotates and slides on the shaft rail 121 of the round shaft 12. During this process, the round shaft 12 pushes the adjusting ball 231 to drive the adjusting rod 232 to slide into the adjusting hole 212. The adjusting spring 233 is compressed, breaking the contact between the adjusting ball 231 and the adjusting groove 122. This continues until the adjusting frame 21 is adjusted to the target position. The adjusting spring 233 then extends, causing the adjusting ball 231 and the adjusting rod 232 to slide into the adjusting groove 122 until the adjusting ball 231 contacts the adjusting groove 122 again, thereby limiting the position of the adjusting frame 21.

[0027] like Figure 1 , Figure 3 , Figure 5 , Figure 6 As shown, the slider 22 is slidably mounted on the radial frame 21 along the radial direction of the circular shaft 12. Multiple sets of limiting components 24 are symmetrically arranged between the slider 22 and the radial frame 21. Each limiting component 24 includes a limiting ball 241, a limiting rod 242, and a limiting spring 243. The limiting ball 241 and the limiting rod 242 are fixedly mounted. The limiting rod 242 is slidably mounted on the slider 22. The limiting spring 243 is arranged between the limiting ball 241 and the slider 22 and is slidably mounted on the limiting rod 242. Multiple sets of limiting grooves 211 are arranged sequentially on the radial frame 21. The limiting ball 241 contacts and engages with the limiting groove 211; the slider 22 is adjusted to its position on the radial frame 21, and the slider 22 slides on the radial frame 21. During this process, the limiting spring 243 is compressed, breaking the contact between the limiting ball 241 and the limiting groove 211, until the slider 22 is adjusted to the target position. Under the elastic action of the limiting spring 243, the limiting spring 243 extends, driving the limiting ball 241 and the limiting rod 242 to move towards the limiting groove 211. The limiting ball 241 contacts the limiting groove 211 again, thereby limiting the position of the slider 22 on the radial frame 21.

[0028] like Figure 1, Figure 3 , Figure 5 , Figure 6 As shown, the longitudinal strut 25 is longitudinally slidably mounted on the slider 22. Multiple sets of positioning grooves 251 are sequentially arranged on the longitudinal strut 25. Multiple sets of positioning components 27 are symmetrically arranged between the slider 22 and the longitudinal strut 25. Each positioning component 27 includes a positioning ball 271, a positioning rod 272, and a positioning spring 273. The positioning ball 271 and the positioning rod 272 are fixedly mounted. The positioning rod 272 is slidably mounted on the slider 22. The positioning spring 273 is located between the slider 22 and the positioning ball 271, and is slidably mounted on the positioning rod 272. Multiple sets of positioning grooves 251 are sequentially arranged on the longitudinal strut 25, and the positioning ball 271 contacts and engages with the positioning groove 251. Adjusting the longitudinal strut 25... The position of the slider 22 is such that the longitudinal rod 25 slides longitudinally on the slider 22. During this process, the longitudinal rod 25 pushes the positioning ball 271 to move the positioning rod 272 toward the slider 22. The positioning spring 273 is compressed, breaking the contact between the positioning ball 271 and the positioning groove 251. This continues until the longitudinal rod 25 moves to the target position. Under the elastic action of the positioning spring 273, the positioning ball 271 and the positioning rod 272 move toward the positioning groove 251 until the positioning ball 271 and the positioning groove 251 make contact again, thereby limiting the position of the longitudinal rod 25. The longitudinal rod 25 is provided with a disassembly hole 252. The sampling rod 26 is longitudinally slidably installed on the disassembly hole 252 inside the longitudinal rod 25.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8As shown in the figure, a set of sampling mechanisms corresponds to a set of adjustment mechanisms. The sampling mechanism is arranged at the bottom of the vertical rod frame 25 of the adjustment mechanism. The sampling mechanism includes two groups of sampling plates 31, a sampling component 32, and a sampling tube 33. The two groups of sampling plates 31 are symmetrically and detachably arranged at the bottom of the vertical rod frame 25. The sampling component 32 is arranged on one group of sampling plates 31, and the sampling tube 33 is arranged on the other group of sampling plates 31. The sampling component 32 includes a sealing plug 321, a sealing rod 322, and a sealing spring 323. The sealing rod 322 is fixedly installed with the sealing plug 321. The sealing rod 322 is slidably installed on the sampling plate 31. The sealing spring 323 is arranged between the sealing plug 321 and the sampling plate 31. The sealing spring 323 is slidably installed on the sealing rod 322. The sealing plug 321 is in contact and cooperation with the end of the sampling tube 33. The shape of the sealing plug 321 is a frustum of a cone. The radius of the top of the sealing plug 321 is r, and the radius of the bottom of the sealing plug 321 is R. The inner diameter of the sampling tube 33 is D, and r < D < R. The bottom of the sampling rod 26 is in contact and cooperation with the side of the sealing plug 321. Push the sampling rod 26 downward. The sampling rod 26 pushes the sealing plug 321 to drive the sealing rod 322 to move away from the sampling tube 33. The sealing spring 323 is compressed, and the contact and cooperation between the sealing plug 321 and the sampling tube 33 is disconnected, facilitating the sampling of the sampling tube 33. After sampling, pull the sampling rod 26 upward. Under the elastic action of the sealing spring 323, the sealing plug 321 drives the sealing rod 322 to move towards the sampling tube 33 until the sampling rod 26 disconnects from the side of the sealing plug 321. The sealing plug 321 is in close contact with the sampling tube 33, and the sealing plug 321 seals the sampling tube 33, and the sampling is completed.

[0030] Working principle: According to the number of groups of adjustment mechanisms to be installed, a set of adjustment mechanisms corresponds to a set of sampling mechanisms. The sampling plate 31 corresponding to the sampling tube 33 is arranged inside the disassembly hole 252 at the bottom of the vertical rod frame 25. Extrude the sealing plug 321 and its corresponding sampling plate 31. The sealing spring 323 is compressed, and the sampling plate 31 is installed on the disassembly hole 252 at the bottom of the vertical rod frame 25. The two groups of sampling plates 31 are symmetrical. At this time, the sealing spring 323 is in a compressed state, and the sealing plug 321 is in close contact with the sampling tube 33. After the sampling mechanism is installed, place the support mechanism inside the target sampling container. The outer ring 11 is placed inside the target sampling container to adjust the sampling position.

[0031] First, adjust the position of the radial bracket 21 on the circular shaft 12. The radial bracket 21 rotates and slides on the shaft rail 121 of the circular shaft 12. During this process, the circular shaft 12 pushes the adjusting ball 231, causing the adjusting rod 232 to slide into the adjusting hole 212. The adjusting spring 233 is compressed, breaking the contact between the adjusting ball 231 and the adjusting groove 122, until the radial bracket 21 is adjusted to the target position. The adjusting spring 233 then extends, causing the adjusting ball 231 and the adjusting rod 232 to slide into the adjusting groove 122, until the adjusting ball 231 contacts the adjusting groove 122 again, thus limiting the position of the radial bracket 21. Second, adjust the position of the slider 22 on the radial bracket 21. The slider 22 slides on the radial bracket 21. During this process, the limiting spring 243 is compressed, breaking the contact between the limiting ball 241 and the limiting groove 211, until the slider 22 is adjusted to the target position, and the limiting spring 243 is compressed. Under the elastic action of the spring, the limiting spring 243 extends, driving the limiting ball 241 and the limiting rod 242 to move towards the limiting groove 211. The limiting ball 241 and the limiting groove 211 come into contact again, thereby limiting the position of the slider 22 on the radial frame 21. Finally, the sampling height is adjusted, and the position of the longitudinal frame 25 on the slider 22 is adjusted. The longitudinal frame 25 slides longitudinally on the slider 22. During this process, the longitudinal frame 25 pushes the positioning ball 271 to drive the positioning rod 272 to move towards the slider 22. The positioning spring 273 is compressed, breaking the contact between the positioning ball 271 and the positioning groove 251. Until the longitudinal frame 25 moves to the target position, under the elastic action of the positioning spring 273, the positioning ball 271 and the positioning rod 272 move towards the positioning groove 251 until the positioning ball 271 and the positioning groove 251 come into contact again, thereby limiting the position of the longitudinal frame 25.

[0032] At this point, the sampling mechanism is in the target position. Repeat the above steps and adjust the position of other sampling mechanisms by adjusting the mechanism to form a comparative test and ensure the accuracy of the test results.

[0033] During sampling, the sampling rod 26 of the adjustment mechanism is squeezed. The bottom of the sampling rod 26 pushes the sealing plug 321, causing the sealing rod 322 to move away from the sampling tube 33. The sealing spring 323 is compressed, breaking the tight contact between the sealing plug 321 and the sampling tube 33. The sampled liquid flows into the sampling tube 33. After sampling is completed, the sampling rod 26 is pulled upward. Under the elastic action of the sealing spring 323, the sealing plug 321 causes the sealing rod 322 to move towards the sampling tube 33 until the sampling rod 26 breaks the side contact with the sealing plug 321. The sealing plug 321 then makes tight contact with the sampling tube 33, sealing the sampling tube 33. Sampling is then complete.

[0034] Repeat the above steps to sample other locations. After sampling, remove the support mechanism and the sampling mechanism. Clean the outside of the sampling tube 33 to prevent contamination of the sample when removing the sample inside the sampling tube 33. Test the samples at different locations to ensure the accuracy of the test results.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A stratified sampling device, comprising a support mechanism and multiple sets of adjustment mechanisms, characterized in that: The adjustment mechanism includes a radial frame (21) and a longitudinal frame (25). The end of the radial frame (21) is coaxial with the circular shaft (12). One end of the radial frame (21) is rotatably and slidably mounted on the circular shaft (12) of the support mechanism. A slider (22) is slidably mounted on the radial frame (21) along the radial direction of the circular shaft (12). The longitudinal frame (25) is slidably mounted on the slider (22) longitudinally. Two sets of sampling plates (31) are detachably and symmetrically arranged at the bottom of the longitudinal frame (25). One set of sampling plates (31) is equipped with a sampling component (32), and the other set of sampling plates (31) is equipped with a sampling device. The sampling assembly (32) includes a sealing plug (321) and a sealing spring (323). A sealing rod (322) is fixedly installed on the sealing plug (321). The sealing rod (322) is slidably installed on the sampling plate (31). The sealing spring (323) is located between the sealing plug (321) and the sampling plate (31). The sealing plug (321) is in contact with the end of the sampling tube (33). A sampling rod (26) is slidably installed longitudinally inside the longitudinal rod frame (25). The sampling rod (26) controls the contact between the sealing plug (321) and the end of the sampling tube (33).

2. The stratified sampling device according to claim 1, characterized in that: The support mechanism includes an outer ring (11) and a bracket (13). The bracket (13) is disposed between the outer ring (11) and the round shaft (12). The outer ring (11) and the round shaft (12) are coaxial. The two ends of the bracket (13) are fixedly installed on the outer ring (11) and the round shaft (12) respectively. The round shaft (12) is provided with a shaft rail (121), and the outer ring (11) is provided with a ring rail (111). One end of the radial frame (21) is rotatably installed on the shaft rail (121) of the round shaft (12), and the other end of the radial frame (21) is rotatably and slidably installed on the ring rail (111).

3. The stratified sampling device according to claim 1, characterized in that: The adjustment mechanism also includes multiple sets of adjustment components (23). The adjustment components (23) are arranged between the radial frame (21) and the round shaft (12). The radial frame (21) is provided with multiple sets of adjustment holes (212). Each set of adjustment holes (212) corresponds to a set of adjustment components (23). The adjustment components (23) include an adjustment ball (231) and an adjustment spring (233). An adjustment rod (232) is fixedly installed on the adjustment ball (231). The adjustment rod (232) is slidably installed on the adjustment hole (212) of the radial frame (21). The adjustment spring (233) is arranged between the adjustment ball (231) and the radial frame (21). Multiple sets of adjustment grooves (122) are evenly arranged on the round shaft (12). The adjustment ball (231) and the adjustment groove (122) are in contact and cooperate.

4. The stratified sampling device according to claim 1, characterized in that: The adjustment mechanism also includes multiple sets of limiting components (24), which are symmetrically arranged between the slider (22) and the diameter frame (21). Each limiting component (24) includes a limiting ball (241) and a limiting spring (243). A limiting rod (242) is fixedly installed on the limiting ball (241), and the limiting rod (242) is slidably installed on the slider (22). The limiting spring (243) is arranged between the limiting ball (241) and the slider (22). Multiple sets of limiting grooves (211) are arranged in sequence on the diameter frame (21), and the limiting ball (241) and the limiting groove (211) are in contact and cooperate.

5. A stratified sampling device according to claim 1, characterized in that: The adjustment mechanism also includes multiple sets of positioning components (27). The positioning components (27) are symmetrically arranged between the slider (22) and the longitudinal rod frame (25). The positioning components (27) include a positioning ball (271) and a positioning spring (273). A positioning rod (272) is fixedly installed on the positioning ball (271). The positioning rod (272) is slidably installed on the slider (22). The positioning spring (273) is arranged between the slider (22) and the positioning ball (271). Multiple sets of positioning grooves (251) are arranged in sequence on the longitudinal rod frame (25). The positioning ball (271) and the positioning groove (251) are in contact and cooperate.

6. The stratified sampling device according to claim 1, characterized in that: The sealing plug (321) is shaped like a frustum, and the bottom of the sampling rod (26) contacts and fits against the side of the sealing plug (321).

7. A stratified sampling device according to claim 1, characterized in that: The radius of the top of the sealing plug (321) is r, the radius of the bottom of the sealing plug (321) is R, and the inner diameter of the sampling tube (33) is D. <D<R。

Images