Soil sampling device for traditional Chinese medicine planting

Abstract

The invention relates to the technical field of soil sampling detection, in particular to a soil sampling device for traditional Chinese medicine planting, which comprises a central pile, a sampling mechanism, an auxiliary unit and an equidistant unit. According to the soil sampling device, all the sampling pieces are inserted into the sampling area jointly formed by the first partition plate and the second partition plate, sampling operation in different depths is completed at a time, the tedious step of repeated sampling is avoided, meanwhile, soil making contact with the sampling barrel is separated through the first partition plate and the second partition plate, and the sampling efficiency is improved. The sampling frame formed by the first partition plate and the second partition plate prevents the sampled soil from loosening and being polluted, in conclusion, the pollution-free property and reliability of the finally obtained sample soil are guaranteed, and the situation that the finally obtained sample soil makes contact with the sampling barrel, and the authenticity of sample soil data is affected is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of soil sampling and detection, and specifically to a soil sampling device and method for traditional Chinese medicine planting. Background Technique

[0002] Soil sampling and detection for traditional Chinese medicine planting is a key link to ensure the quality, safety and sustainable production of traditional Chinese medicinal materials. The specific functions are as follows: 1. Through sampling and detection, the content of heavy metals in the soil can be understood in a timely manner, avoiding the influence of excessive heavy metals on the quality and safety after traditional Chinese medicinal materials are planted, and ensuring the safety and effectiveness of clinical medication; 2. Soil sampling can detect the pesticide residues in the soil, preventing the pollution caused by the residual pesticides in the soil after traditional Chinese medicinal materials are planted, ensuring the purity and quality of traditional Chinese medicinal materials, and meeting the requirements of relevant quality standards and specifications; 3. By sampling and detecting the soil, the content of macronutrients such as nitrogen, phosphorus, and potassium and micronutrients such as iron, zinc, and manganese in the soil can be analyzed. According to the soil nutrient status, the types and amounts of fertilizers can be reasonably determined to achieve precise fertilization and improve fertilizer utilization efficiency; 4. Soil sampling and detection can timely discover problems in aspects such as soil structure and soil acidity. According to the detection results, corresponding soil improvement measures can be taken, such as applying lime to adjust acidic soil and applying sulfur to adjust alkaline soil, creating a good soil environment for the growth of traditional Chinese medicinal materials after planting.

[0003] The sample plot detection method is the most common soil sampling and detection method. First, a representative area is selected as a fixed sample plot (usually circular or square), and then soil sampling is carried out to measure soil components, soil structure and soil acidity.

[0004] Currently, during soil sampling, first, sampling points are randomly selected manually in the sample plot, and external existing tools (such as a sampling shovel) are used to dig out the soil at this point. Since the surface part of this piece of soil comes into contact with the sampling shovel, and the sampling shovel has been sampled multiple times, soil samples from other areas may remain on the surface of the sampling shovel. Therefore, at this time, it is necessary to manually scrape off the surface part of the dug-out soil, and finally collect the actually required soil sample, and repeat the above sampling process to obtain multiple samples. Then, methods such as the gravimetric method, volumetric method, elemental analyzer, and near-infrared spectroscopy technology are used to measure the samples.

[0005] The following problems exist in the current sampling process: 1. Currently, after the soil is dug out, the soil accumulates on the shovel surface. The method of scraping the soil manually is likely to cause the whole soil to be loose, making it difficult to separate the actually required soil sample, and it is easy for the actually required soil sample to come into contact with the shovel surface or fall to the ground, resulting in the soil sample being contaminated and unable to be used.

[0006] 2. Currently, sampling points are mainly selected randomly by hand. Manual selection is highly subjective and easily affected by the subjective judgment of operators. It lacks true randomness and can easily lead to failure to sample in some local areas, resulting in uneven data distribution and affecting the final soil test results. Summary of the invention

[0007] Based on this, it is necessary to provide a soil sampling device and method for Chinese medicine planting, aiming to solve the above-mentioned problems of the prior art.

[0008] The present application provides a soil sampling device for Chinese medicinal herb planting, comprising: a center pile, the lower end of the center pile is conical, a conical support platform is sleeved on the center pile, a mounting frame is installed on the upper end surface of the center pile through a mounting pin, a support wheel is provided at the end of the lower end surface of the mounting frame away from the center pile, and a sampling mechanism is provided on the mounting frame.

[0009] The sampling mechanism includes a sliding block and a sampling assembly. The front and rear end surfaces of the mounting frame are both provided with sliding blocks for sliding along the length direction thereof. The lower end surfaces of the two sliding blocks are provided with an operating panel for sliding up and down together through a vertical rod with a vertical axis. The lower end surface of the operating panel is fixedly provided with a sampling barrel. The right end surface of the sampling barrel is provided with three sampling grooves equidistantly distributed up and down. The sampling assembly includes sampling pieces corresponding to the sampling grooves one by one. An auxiliary unit is provided in the sampling barrel. The auxiliary unit includes two partitions 1 inserted into the sampling barrel from top to bottom and one partition 2 inserted into the sampling barrel laterally.

[0010] The mounting frame is provided with an equidistant unit, which includes an equidistant block. The mounting frame is provided with a plurality of equidistant blocks distributed left and right. A plug-in cylinder with a vertical axis is fixedly provided on the equidistant block, and a plug-in column that slides up and down is provided on the operating panel.

[0011] According to a favorable embodiment, the equidistant blocks close to the center pile are fixedly connected to the mounting frame, the remaining equidistant blocks are slidably arranged on the mounting frame along the length direction of the mounting frame, the plug-in cylinder closest to the center pile is rotatably provided with an equidistant bar 1, and the remaining plug-in cylinders are rotatably provided with an equidistant bar 2, and the equidistant bar 1 and the adjacent equidistant bar 2, as well as the two adjacent equidistant bars 2, are rotatably connected.

[0012] According to a favorable embodiment, the equidistant unit further comprises a locking bar, the mounting frame is provided with a locking bar for sliding along its length direction, and the locking bar is located on the right side of the rightmost equidistant block, a matching groove is provided on the locking bar, and the rightmost equidistant bar 2 is provided with a matching column located in the matching groove, and the upper end surface of the mounting frame is provided with a bolt with a vertical axis and passing through the locking bar for sliding along its length direction, and a nut is threadedly installed on the bolt and is located above the locking bar.

[0013] According to an advantageous embodiment, a sliding rod slidably penetrates through the upper end surface of the operation board. A sliding strip is fixedly arranged on the upper end surface of the sliding rod. A plugging column is fixedly arranged on the lower end surface of the sliding strip. The upper end of the inner cylinder of the plugging cylinder is chamfered. Pressing areas are provided at both ends of the operation board.

[0014] According to an advantageous embodiment, the sampling mechanism further includes a resistance-breaking member. The resistance-breaking member is fixedly arranged on the lower end surface of the sampling cylinder. The resistance-breaking member has a square annular structure. Its four inner ring surfaces are all aligned with the inner cylinder of the sampling cylinder, and its four outer ring surfaces are all inclined surfaces, which are inclined from top to bottom towards the center of the sampling cylinder.

[0015] According to an advantageous embodiment, the sampling mechanism further includes a first through groove. The upper end surface of the sampling cylinder is provided with first through grooves corresponding to the two partition plates one by one. The right end surface of the sampling cylinder is provided with a second through groove corresponding to the partition plate two. The inner cylinder of the sampling cylinder is provided with a receiving groove for receiving the partition plate two after passing through the second through groove. The upper end surfaces of the two partition plates one are jointly fixedly provided with a pressing plate. The partition plate two is in a T shape. One end of the horizontal section of the partition plate two is in an isosceles triangle shape. Two through grooves are provided on the partition plate two and are distributed left and right. The through grooves are successively divided into an inverted isosceles trapezoid section and a rectangular section from top to bottom. A docking groove corresponding to the sampling groove one by one is provided on the partition plate one close to the sampling groove.

[0016] According to an advantageous embodiment, the auxiliary unit further includes a sealing plate. Sealing plates are rotatably arranged on the upper and lower inner walls of the docking groove. A support plate is rotatably arranged on the end surface of the sealing plate away from the central pile. Two front and rear symmetric accommodating cavities are provided on the upper and lower inner walls of the docking groove. A rotating shaft with an axis extending along the length direction of the sealing plate is rotatably arranged in the accommodating cavity. A rope is wound around the rotating shaft. The other end of the rope is fixedly connected to the adjacent sealing plate. A scroll spring is jointly fixedly arranged between the rotating shaft and the inner wall of the accommodating cavity.

[0017] According to an advantageous embodiment, receiving grooves are provided on the upper and lower inner walls of the docking groove. A clamping block is slidably arranged up and down in the receiving groove. The two clamping blocks in the same receiving groove are symmetric up and down. A return spring is jointly fixedly arranged between the clamping block and the inner wall of the receiving groove.

[0018] According to an advantageous embodiment, the sampling assembly further includes a sampling rack. The three sampling members are fixedly arranged on the sampling rack at equal intervals from top to bottom. Guide strips are fixedly arranged on the upper and lower end surfaces of the two horizontal sections of the sampling member. Guide grooves corresponding to the guide strips one by one are provided on the inner wall of the sampling groove. The outside of the guide groove is chamfered.

[0019] In summary, the present invention includes at least one of the following beneficial effects: First, in the present invention, by inserting all the sampling parts into the sampling area jointly formed by the first partition board and the second partition board, the sampling operation at different depths is completed at one time, avoiding the cumbersome steps of multiple samplings. At the same time, the first partition board and the second partition board separate the soil in contact with the sampling cylinder. Secondly, the sampling frame formed by the first partition board and the second partition board prevents the sampled soil from being loose and contaminated. In summary, it ensures the pollution-free property and reliability of the finally obtained soil sample, and avoids the contact between the finally sampled soil and the sampling cylinder, which affects the authenticity of the soil sample data.

[0020] Second, in the present invention, the sampling points are evenly distributed by the equidistant unit, and at the same time, the installation frame rotates around the whole week to repeat the sampling process, so that the sampling points cover the entire sample plot, improving the spatial coverage rate. At the same time, random sampling reduces the influence of manual subjective selection, making the final result comprehensively, objectively and representatively reflect the actual situation of the detection area. Secondly, it reduces the large amount of time and manpower consumed by manually selecting sampling points. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0022] Figure 1 FIG. 1 shows a schematic structural diagram of a soil sampling device for traditional Chinese medicine planting according to an embodiment of the present invention.

[0023] Figure 2 FIG. 2 shows a partial structural schematic diagram of a soil sampling device for traditional Chinese medicine planting according to an embodiment of the present invention.

[0024] Figure 3 FIG. 3 shows provided according to an embodiment of the present invention Figure 2 An enlarged schematic view of part A.

[0025] Figure 4 FIG. 4 shows a front view schematic diagram among the center pile, the sampling cylinder and the resistance-breaking member according to an embodiment of the present invention.

[0026] Figure 5 FIG. 5 shows a partial sectional exploded view of the sampling cylinder, the first partition board and the second partition board according to an embodiment of the present invention.

[0027] Figure 6 FIG. 6 shows a partial sectional exploded view of the sealing plate, the first partition board and the second partition board according to an embodiment of the present invention.

[0028] Figure 7Shows a partial cross-sectional front view of a first partition board, a sealing board, and a support board provided according to an embodiment of the present invention.

[0029] Figure 8 Shows a Figure 7 magnified schematic view at position B in

[0030] Figure 9 Shows a schematic diagram of the change of the sealing board and the support board from a closed state to an unlocked state provided according to an embodiment of the present invention.

[0031] Among them, the above-mentioned drawings include the following reference numerals: 1, central pile; 10, support platform; 2, mounting frame; 20, support wheel; 3, sampling mechanism; 30, sliding block; 300, operation board; 301, sampling cylinder; 302, sampling groove; 31, auxiliary unit; 310, first partition board; 311, second partition board; 312, sealing board; 313, support board; 314, accommodation cavity; 315, rotating shaft; 316, rope; 317, scroll spring; 318, clamping block; 319, return spring; 32, equidistant unit; 320, equidistant block; 321, insertion cylinder; 322, insertion column; 323, first equidistant bar; 324, second equidistant bar; 325, locking bar; 326, mating groove; 327, mating column; 328, bolt; 33, sliding rod; 330, sliding strip; 34, resistance-breaking member; 350, receiving groove; 351, pressing plate; 352, through groove; 353, docking groove; 4, sampling assembly; 40, sampling member; 41, sampling frame; 42, guiding strip; 43, guiding groove. Detailed implementation manners

[0032] In order to make the above-mentioned objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0033] As Figure 1 shown, a soil sampling device for traditional Chinese medicine planting includes: a central pile 1, the lower end of the central pile 1 is conical, a conical support platform 10 is sleeved on the central pile 1, the upper end surface of the central pile 1 is inserted and installed with a mounting frame 2 through a mounting pin, a support wheel 20 is arranged at one end of the lower end surface of the mounting frame 2 away from the central pile 1, and a sampling mechanism 3 for collecting soil samples is arranged on the mounting frame 2.

[0034] As Figure 1 and Figure 2As shown, the sampling mechanism 3 includes a sliding block 30 and a sampling assembly 4. The front and rear end surfaces of the mounting frame 2 are both provided with sliding blocks 30 for sliding along the length direction thereof. The lower end surfaces of the two sliding blocks 30 are provided with an operating plate 300 for sliding up and down together through a vertical rod with a vertical axis. A sampling barrel 301 is fixedly provided on the lower end surface of the operating plate 300. The right end surface of the sampling barrel 301 is provided with three sampling slots 302 equidistantly distributed up and down. The sampling slots 302 are matched with the sampling assembly 4 to complete the sampling. See FIG. Figure 5 The sampling assembly 4 includes a sampling piece 40 corresponding to the sampling groove 302 one by one. The sampling cylinder 301 is provided with an auxiliary unit 31 for separating the required sample soil. The auxiliary unit 31 includes two partitions 1 310 inserted into the sampling cylinder 301 from top to bottom and a partition 2 311 inserted into the sampling cylinder 301 horizontally. The sample soil is separated by the two partitions 1 310 and the one partition 2 311 to form a sampling cavity.

[0035] like Figure 1 and Figure 2 As shown, the mounting frame 2 is provided with an equidistant unit 32, and the equidistant unit 32 includes an equidistant block 320. The mounting frame 2 is provided with a plurality of equidistant blocks 320 distributed left and right, and a plug-in cylinder 321 with a vertical axis is fixedly provided on the equidistant block 320. The operating panel 300 is provided with a plug-in column 322 that slides up and down, and the plug-in cylinder 321 at different positions is inserted through the plug-in column 322 to complete the fixation of the sampling cylinder 301 after it is moved to different sampling positions.

[0036] like Figure 1 , Figure 4 and Figure 5 As shown, the sampling mechanism 3 also includes a breaking member 34. The lower end surface of the sampling tube 301 is fixedly provided with the breaking member 34. The breaking member 34 is in a square ring structure, and its four inner ring surfaces are aligned with the inner tube of the sampling tube 301, and the four outer ring surfaces are inclined surfaces. The outer ring surfaces are inclined from top to bottom toward the center of the sampling tube 301. Pressing areas are provided at both ends of the operating panel 300, and manual pressure is applied to the pressing areas to press down or lift the sampling tube 301.

[0037] During operation, after selecting the sampling site, the center of the sampling site is manually measured and the center pile 1 is inserted into the center to mark and prepare for subsequent sampling. Then, the mounting frame 2 and the sampling mechanism 3 are assembled to the center pile 1. At this time, the support wheels 20 and the support platform 10 jointly support the mounting frame 2 to improve the stability and convenience during the sampling process.

[0038] According to the required sampling requirements, the spacing between all equidistant blocks 320 is adjusted, and after the operation panel 300 and the sampling tube 301 are moved to the first sampling position, the plug-in column 322 is inserted into the corresponding plug-in tube 321 to complete the selection of the sampling position. Then, the operation panel 300 is manually pressed down, so that the operation panel 300 drives the sampling tube 301 to be inserted into the soil, so that the soil is temporarily stored in the sampling tube 301. Then, the operation panel 300 and the sampling tube 301 are pulled upward, and the corresponding soil is taken out from the sampling slot 302 through the sampling piece 40. The soil samples at the depth are collected, and then the plug-in column 322 is pulled out and the above operation is repeated on the remaining equidistant blocks 320 to complete multiple samplings (the mounting frame 2 is at the same position). Then the mounting frame 2 is manually moved so that the mounting frame 2 rotates a specified angle with the center pile 1 as the axis. It should be noted that the upper end of the mounting pin is a threaded section, and a tightening nut is provided on the thread of the mounting pin. The position of the mounting frame 2 relative to the center pile 1 is fixed by rotating the tightening nut. Then the sampling is repeated multiple times to obtain multiple samples in the sample plot.

[0039] Secondly, it should be noted that after the mounting frame 2 rotates a full circle at equal angles and repeats sampling multiple times, the randomness and spatial representativeness of the sampling samples are improved, so that the final result comprehensively, objectively and representatively reflects the actual situation of the detection area.

[0040] When performing sampling operations, the pressing area on the operating panel 300 is manually pressed, and the operating panel 300 drives the sampling tube 301 to be inserted into the soil, and the soil at the sampling point enters the sampling tube 301 to complete the preliminary sampling. In the above process, the provided resistance-breaking member 34 reduces the resistance generated by the soil during the downward movement of the sampling tube 301, thereby reducing the difficulty of manual sampling. Secondly, the provided pressing area facilitates manual holding and pressure application during the sampling process, and the chamfering treatment on the plug-in tube 321 facilitates the insertion of the plug-in column 322 into the plug-in tube 321. In summary, the convenience of the sampling process is improved.

[0041] like Figure 1 and Figure 2 As shown, the equidistant block 320 close to the center pile 1 is fixedly connected to the mounting frame 2, and the remaining equidistant blocks 320 are slidably arranged on the mounting frame 2 along the length direction of the mounting frame 2. An equidistant bar 1 323 is rotatably sleeved on the plug-in tube 321 closest to the center pile 1, and an equidistant bar 2 324 is rotatably sleeved on the remaining plug-in tubes 321. The equidistant bar 1 323 and the adjacent equidistant bar 2 324, and the two adjacent equidistant bar 2s 324 are all rotatably connected.

[0042] like Figure 1 , Figure 2 and Figure 3As shown, the equidistant unit 32 further includes a locking bar 325. The locking bar 325 is slidably arranged on the mounting bracket 2 along its length direction, and the locking bar 325 is located on the right side of the rightmost equidistant block 320. A mating groove 326 is formed on the locking bar 325. A mating post 327 located in the mating groove 326 is arranged on the rightmost equidistant bar two 324. A bolt 328 with a vertical axis and passing through the locking bar 325 is slidably arranged on the upper end surface of the mounting bracket 2 along its length direction. A nut is threadedly mounted on the bolt 328 and is located above the locking bar 325.

[0043] During operation, after the mounting bracket 2 is installed on the center pile 1, the staff determines the sampling interval according to the size of the sample plot. Then, the nut is manually loosened and the locking bar 325 is moved. During the process of the locking bar 325 moving along the length direction of the mounting bracket 2, through the cooperation between the mating groove 326 on it and the mating post 327, the adjacent equidistant bar two 324 is pulled, and the corresponding equidistant block 320 moves synchronously. Through the connection between the equidistant bar two 324 and the connection between the equidistant bar one 323 and the equidistant bar two 324, the distance between adjacent equidistant blocks 320 is the same, and by moving the locking bar 325, the equidistant interval is set to a set value. Then, the nut is manually tightened to lock the locking bar 325, and at the same time, the equidistant bar one 323, the equidistant bar two 324 and the equidistant block 320 are locked.

[0044] After that, the operation board 300 and the sampling cylinder 301 are moved to be opposite to the corresponding equidistant block 320, and after the insertion post 322 is matched with the corresponding insertion cylinder 321 of the equidistant block 320, the sampling cylinder 301 is now directly above the required sampling point.

[0045] As Figure 2 shown, a sliding rod 33 penetrates through the upper end surface of the operation board 300 up and down. A sliding bar 330 is fixedly arranged on the upper end surface of the sliding rod 33. The insertion post 322 is fixedly arranged on the lower end surface of the sliding bar 330. The upper end of the inner cylinder of the insertion cylinder 321 is chamfered.

[0046] As Figure 1 、 Figure 5 and Figure 6As shown in the figure, the sampling mechanism 3 further includes a first through groove. A first through groove corresponding to the two first partitions 310 is provided on the upper end surface of the sampling cylinder 301. A second through groove corresponding to the second partition 311 is provided on the right end surface of the sampling cylinder 301. A receiving groove 350 for receiving the second partition 311 after passing through the second through groove is provided in the inner cylinder of the sampling cylinder 301. A pressing plate 351 is fixedly arranged on the upper end surfaces of the two first partitions 310. The second partition 311 is T-shaped. One end of the horizontal section of the second partition 311 is isosceles triangular. Two through grooves 352 distributed left and right are provided on the second partition 311. The through grooves 352 are successively divided into an inverted isosceles trapezoidal section and a rectangular section from top to bottom. A docking groove 353 corresponding to the sampling groove 302 is provided on the first partition 310 close to the sampling groove 302.

[0047] After the sampling cylinder 301 is inserted into the soil to complete the soil sampling operation and the sampling cylinder 301 is lifted upward to separate it from the soil, then manually apply a leftward pressure to the vertical section of the second partition 311, so that the second partition 311 passes through the second through groove and is clamped into the receiving groove 350. At this time, the two through grooves 352 are respectively located directly below the corresponding first through grooves. Then manually align the two first partitions 310 with the corresponding first through grooves and apply a downward pressure on the pressing plate 351. Therefore, the pressing plate 351 drives the first partition 310 to move downward and insert into the soil in the sampling cylinder 301. Finally, the first partition 310 passes through the corresponding through groove 352. So at this time, the soil originally located in the sampling cylinder 301 is re-isolated by the two first partitions 310, one second partition 311 and the front and rear end faces of the inner cylinder of the sampling cylinder 301 to form a new sampling area. The soil in this area only contacts the inner wall of the sampling cylinder 301 on the front and rear sides.

[0048] In the above process, a rectangular frame is formed by the mutual positioning and limitation of the two first partitions 310 and one second partition 311, which serves as the frame for the subsequent process of taking out the soil sample, improving the stability of the sampling process. Secondly, the isosceles triangular shape at the left end of the second partition 311 facilitates its insertion into the soil. And during the process of inserting the two first partitions 310 after the second partition 311 is inserted into the soil, the first partition 310 moves downward, and the specific soil located in the sampling cylinder 301 (this part of the soil is in direct contact with the sampling cylinder 301) is pushed out through the through groove 352. Finally, the second partition 311 replaces the position of the above specific soil. The isosceles trapezoidal section of the through groove 352 not only guides the docking and penetration of the first partition 310 with it, but also guides the specific soil to be discharged from the sampling cylinder 301 along the through groove 352. In the above process, the second partition 311 plays a role in supporting the soil, avoiding the problem that too much soil sample falls out of the sampling cylinder 301 during the downward movement of the first partition 310.

[0049] As Figure 1 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, the auxiliary unit 31 further includes a sealing plate 312. The sealing plates 312 are rotatably arranged on the upper and lower inner walls of the docking groove 353. When the two sealing plates 312 are in a vertical state, they cooperate with each other to block the corresponding docking groove 353. A support plate 313 is rotatably arranged on the end face of the sealing plate 312 away from the central pile 1. Two front and rear symmetric accommodation cavities 314 are opened on the upper and lower inner walls of the docking groove 353. A rotating shaft 315 with an axis extending along the length direction of the sealing plate 312 is rotatably arranged in the accommodation cavity 314. A rope 316 is wound around the rotating shaft 315, and the other end of the rope 316 is fixedly connected to the adjacent sealing plate 312. A volute spring 317 is fixedly arranged between the rotating shaft 315 and the inner wall of the accommodation cavity 314.

[0050] As Figure 8 shown, accommodation grooves are opened on the upper and lower inner walls of the docking groove 353. A clamping block 318 is slidably arranged up and down in the accommodation groove. The two clamping blocks 318 in the same accommodation groove are symmetric up and down. Taking the upper clamping block 318 in the same accommodation groove as an example, the clamping block 318 is sequentially a rectangular section and a trapezoidal section from top to bottom. The right inclined surface of the trapezoidal section of the clamping block 318 faces the sampling groove 302, and this inclined surface inclines towards the sampling groove 302 from bottom to top. Its left inclined surface faces the sealing plate 312 and approaches the sealing plate 312 from bottom to top. A return spring 319 is fixedly arranged between the clamping block 318 and the inner wall of the accommodation groove.

[0051] As Figure 1 and Figure 5 shown, the sampling assembly 4 further includes a sampling frame 41. The three sampling members 40 are fixedly arranged on the sampling frame 41 at equal intervals from top to bottom. The sampling member 40 is U-shaped and the U-shaped opening thereof faces away from the sampling frame 41. Guide bars 42 are fixedly arranged on the upper and lower end faces of the two horizontal sections of the sampling member 40. Guide grooves 43 corresponding to the guide bars 42 one by one are opened on the inner wall of the sampling groove 302. The outer sides of the guide grooves 43 are chamfered.

[0052] After the sampling cylinder 301 is inserted into the soil, after manually lifting the sampling cylinder 301 and the soil upward, the partition plate two 311 is inserted into the sampling cylinder 301, and then the partition plate one 310 is inserted. Regarding the working process of the sealing plate 312 on the partition plate one 310, it should be noted that: in the initial state, the volute spring 317 is deformed, and the return spring 319 is in a compressed state. The elastic force generated by the deformation of the return spring 319 causes the clamping block 318 to protrude from the accommodation groove, and the support plate 313 contacts the corresponding clamping block 318. The elastic force generated by the deformation of the volute spring 317 causes the sealing plate 312 to have a tendency to rotate towards the adjacent rotating shaft 315. At this time, the clamping block 318 hinders the movement of the support plate 313, so that the sealing plate 312 is in a vertical state (refer to Figure 7 and Figure 9), at this time, the two sealing plates 312 in the same docking groove 353 cooperate with each other to block the docking groove 353. Therefore, the soil in the sampling cylinder 301 will not overflow from the docking groove 353 during the downward movement of the first partition plate 310. At this time, the sealing plate 312 and the support plate 313 are in a locked state.

[0053] When the first partition plate 310 has completely moved downward, the docking groove 353 and the corresponding sampling groove 302 are opposite to each other left and right. At this time, the left flat surface of the clamping block 318 contacts the corresponding support plate 313. Manually hold the sampling rack 41 so that the left ends of the two horizontal sections of the sampling member 40 are respectively in contact with the inclined surfaces of the corresponding clamping blocks 318, and the sampling member 40 is made to press the inclined surfaces of the clamping blocks 318, so that part of the clamping blocks 318 are retracted into the receiving grooves, and the return spring 319 is continuously compressed. At this time, the left inclined surface of the clamping block 318 contacts the corresponding support plate 313. Then the sampling member 40 retracts. During this process, the elastic force generated by the deformation of the scroll spring 317 causes the rotating shaft 315 to wind the rope 316, and the rope 316 pulls the sealing plate 312 to make the sealing plate 312 rotate, so that the end of the support plate 313 close to the inner wall of the docking groove 353 moves to the right. During the rightward movement, the support plate 313 contacts the left inclined surface of the clamping block 318 and pushes the clamping block 313 back into the receiving groove, so the support plate 313 and the sealing plate 312 are unlocked. As the sampling member 40 continues to move to the right, the sealing plate 312 and the support plate 313 are in a horizontal state. At this time, the docking groove 353 is in an open state, and at the same time, the local sealing plate 312 and the support plate 313 are flush with the inner wall of the corresponding sampling groove 302 to guide the subsequent sampling process. Refer to Figure 7 and Figure 9 。

[0054] After that, manually hold the sampling rack 41 again and insert it into the sampling cylinder 301. Through the guiding cooperation between the guiding strip 42 and the guiding groove 43, the sampling member 40 is accurately inserted into the docking groove 353. As the sampling member 40 continuously penetrates into the soil in the sampling cylinder 301, the U-shaped areas of the three sampling members 40 all enter the above-mentioned new sampling area, and three sampling points are formed at equal distances up and down in the new sampling area. Then the sampling rack 41 is withdrawn, and the soil samples at different depths in the sampling cylinder 301 are respectively located in the U-shaped areas of the three sampling members 40. Then the soil samples are collected manually. During the above process, the taken soil is in the new sampling area, and the used sampling member 40 and the first partition plate 310 will be cleaned before sampling. Therefore, the obtained soil samples do not contact the sampling cylinder 301, ensuring the pollution-free and reliable nature of the soil samples, avoiding the influence of the contact between the soil samples and the sampling cylinder 301 on the authenticity of the soil sample data during the sampling process. At the same time, only the flat end faces of the sampling member 40 and the second partition plate 311 need to be cleaned, simplifying the cleaning process, improving the convenience and practicality of the device, and avoiding the cumbersome operation of manually scraping the surface soil samples in the traditional sampling process.

[0055] After manually pushing the support plate 313 and the sealing plate 312, the sealing plate 312 is reset to its initial vertical state. The clamping block 318 is reset under the elastic force generated by the deformation of the reset spring 319 and obstructs the movement of the support plate 313. At the same time, the opposite surfaces of the two partition plates 310 are cleaned.

[0056] In addition, this article also provides a soil sampling method, including the following steps:

[0057] S1. Determine the sampling center: After selecting the plot for sampling, manually measure the center of the plot and insert the center pile 1 at the center. Then, assemble the mounting frame 2 and the sampling mechanism 3 onto the center pile 1.

[0058] S2. Adjust the sampling spacing and angle: According to the size of the soil sample, adjust the spacing between adjacent equal-spacing blocks 320. Manually loosen the nut and move the locking bar 325 to adjust the spacing between adjacent equal-spacing blocks 320 and make the equal-spacing distance a set value. Then, manually tighten the nut to lock the locking bar 325.

[0059] S3. Single sampling operation: Manually move the sliding rod 33 and the plug-in column 322 upward and move the operation plate 300 to face the corresponding equal-spacing block 320. Then, insert the plug-in column 322 into the plug-in cylinder 321 of the equal-spacing block 320 to complete the locking of the sampling position. Then, manually press the pressing areas on both sides of the operation plate 300. The operation plate 300 drives the sampling cylinder 301 to insert into the soil, and the soil at the sampling point enters the sampling cylinder 301 to complete the preliminary sampling.

[0060] S4. Sampling: Manually lift the sampling cylinder 301 upward. First, insert the second partition plate 311 into the sampling cylinder 301, and then insert the two first partition plates 310 downward into the sampling cylinder 301. The front and rear end faces of the two first partition plates 310, one second partition plate 311, and the inner cylinder of the sampling cylinder 301 re-isolate the soil originally in the sampling cylinder 301 to form a new sampling area. Then, manually hold the sampling frame 41 so that the left ends of the two horizontal sections of the sampling member 40 are respectively in contact with the inclined surfaces of the corresponding clamping blocks 318 to unlock the sealing plate 312 and the support plate 313. Then, hold the sampling frame 41 again and insert it into the sampling cylinder 301. After the soil sample enters the U-shaped area of the sampling member 40, pull out the sampling frame 41 to obtain the final required soil sample at this sampling point.

[0061] S5. Repeat sampling and sampling: Manually push the support plate 313 and the sealing plate 312 to reset the sealing plate 312 to its initial locked state. Pull out the first partition plate 310 and the second partition plate 311 and clean the first partition plate 310 and the sampling member 40. Pull out the plug-in column 322 and move the operation plate 300. Repeat the above sampling operation, and then rotate the mounting frame 2 to repeat sampling.

[0062] It should be noted that the sampled soil is tested for heavy metals, nitrogen, phosphorus, potassium, iron, zinc, manganese, pesticide residues, pH value and other indicators in the following ways: 1. Electrochemical sensors such as anodic stripping voltammetry are used to detect heavy metal content. The principle is to reduce heavy metal ions to metals and enrich them on the electrode surface at a specific potential, and then measure the heavy metal content through the current generated during the oxidation stripping process; nitrogen, phosphorus, and potassium elements are detected by ion-selective electrode electrochemical sensors. This type of sensor has the characteristics of fast response speed and simple operation, and can quickly measure the concentration of specific ions in the soil on-site; iron, zinc, and manganese elements are detected by electrochemical sensors such as potentiometry or voltammetry. For example, by controlling the electrode potential, redox reactions of metal ions such as iron, zinc, and manganese occur on the electrode surface, and their content is analyzed based on the current-potential curve; pesticide residues are detected by immunochemical sensors. Based on the specific immune reaction of antigen-antibody, the pesticide is used as an antigen, and the corresponding antibody is prepared and fixed on the sensor surface. When the pesticide in the sample binds to the antibody, optical, electrical and other signal changes will occur, thus realizing the rapid detection of pesticide residues; the pH value is detected by a glass electrode pH electrochemical sensor. The pH value is measured by detecting the potential difference generated on both sides of the glass membrane due to different hydrogen ion concentrations. It has the advantages of high precision and fast response, and is one of the commonly used methods for detecting soil pH value.

[0063] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0064] In addition, the terms "first", "second", "No. 1", "No. 2" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "No. 1", "No. 2" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0065] In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, the terms "arranged", "connected", "installed", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A soil sampling device for Chinese medicinal herb planting, characterized in that: include: A center pile, wherein a conical support platform is sleeved on the center pile, a mounting frame is installed on the upper end surface of the center column through a mounting pin, a support wheel is provided at the end of the lower end surface of the mounting frame away from the center pile, and a sampling mechanism is provided on the mounting frame; The sampling mechanism includes a sliding block and a sampling assembly. The front and rear end surfaces of the mounting frame are both provided with sliding blocks for sliding along the length direction thereof. The lower end surfaces of the two sliding blocks are provided with an operating panel for sliding up and down together through a vertical rod with a vertical axis. The lower end surface of the operating panel is fixedly provided with a sampling barrel. The right end surface of the sampling barrel is provided with three sampling slots equidistantly distributed up and down. The sampling slots and the sampling assembly cooperate to complete the sampling. The sampling assembly includes sampling pieces corresponding to the sampling slots one by one. An auxiliary unit is provided in the sampling barrel. The auxiliary unit includes two partitions 1 inserted into the sampling barrel from top to bottom and a partition 2 inserted into the sampling barrel laterally. The sample soil is separated by the two partitions 1 and the partition 2 to form a sampling cavity. The mounting frame is provided with an equidistant unit, and the equidistant unit includes an equidistant block. The mounting frame is provided with a plurality of equidistant blocks distributed left and right. A plug-in cylinder with a vertical axis is fixedly provided on the equidistant block. A plug-in column that slides up and down is provided on the operating panel. The plug-in cylinder at different positions is inserted through the plug-in column to complete the fixation of the sampling cylinder after it is moved to different sampling positions.

2. A soil sampling device for Chinese medicinal herb planting according to claim 1, characterized in that: The equidistant blocks close to the center pile are fixedly connected to the mounting frame, and the remaining equidistant blocks are slidably arranged on the mounting frame along the length direction of the mounting frame. An equidistant bar 1 is rotatably sleeved on the plug-in cylinder closest to the center pile, and equidistant bars 2 are rotatably sleeved on the remaining plug-in cylinders. The equidistant bar 1 and the adjacent equidistant bar 2, as well as the two adjacent equidistant bars 2, are rotatably connected.

3. A soil sampling device for Chinese medicinal material planting according to claim 2, characterized in that: The equidistant unit also includes a locking bar, and a locking bar is slidably provided on the mounting frame along its length direction, and the locking bar is located on the right side of the rightmost equidistant block, a matching groove is provided on the locking bar, and a matching column located in the matching groove is provided on the second equidistant bar on the right side, and a bolt with a vertical axis and passing through the locking bar is slidably provided on the upper end surface of the mounting frame along its length direction, and a nut located above the locking bar is threadedly installed on the bolt.

4. A soil sampling device for Chinese medicinal herb planting according to claim 1, characterized in that: The upper end surface of the operating panel slides up and down and is penetrated by a sliding rod, the upper end surface of the sliding rod is fixedly provided with a sliding bar, the plug-in column is fixedly provided on the lower end surface of the sliding bar, the upper end of the inner tube of the plug-in tube is chamfered, and pressing areas are provided at both ends of the operating panel.

5. A soil sampling device for Chinese medicinal herb planting according to claim 1, characterized in that: The sampling mechanism further comprises a breaking member, and the breaking member is fixedly arranged on the lower end surface of the sampling cylinder.

6. A soil sampling device for Chinese medicinal herb planting according to claim 1, characterized in that: The sampling mechanism also includes a through groove 1, a through groove 1 corresponding to the two partitions is opened on the upper end surface of the sampling tube, a through groove 2 corresponding to the partition 2 is opened on the right end surface of the sampling tube, and a receiving groove for receiving the partition 2 after passing through the through groove 2 is opened in the inner tube of the sampling tube. A pressure plate is fixedly arranged on the upper end surfaces of the two partitions 1, the partition 2 is T-shaped, and one end of the horizontal section of the partition 2 is an isosceles triangle shape. Two through grooves distributed on the left and right are opened on the partition 2, and the through grooves are divided into inverted isosceles trapezoidal sections and rectangular sections from top to bottom. A docking groove corresponding to the sampling groove is opened on the partition 1 close to the sampling groove.

7. A soil sampling device for Chinese medicinal material planting according to claim 6, characterized in that: The auxiliary unit also includes a sealing plate, and the upper and lower inner walls of the docking groove are rotatably provided with sealing plates. When the two sealing plates are in a vertical state, the two sealing plates cooperate with each other to seal the corresponding docking grooves. The end surface of the sealing plate away from the center pile is rotatably provided with a support plate, and the upper and lower inner walls of the docking groove are each provided with two front-to-back symmetrical accommodating cavities, and a rotating shaft with an axis extending along the length direction of the sealing plate is rotatably provided in the accommodating cavity, and a rope is wound on the rotating shaft, and the other end of the rope is fixedly connected to the adjacent sealing plate, and a volute spring is fixedly provided between the rotating shaft and the inner wall of the accommodating cavity.

8. A soil sampling device for Chinese medicinal herb planting according to claim 7, characterized in that: The upper and lower inner walls of the docking groove are both provided with a receiving groove, in which a clamping block is slidably arranged up and down, and the two clamping blocks in the same receiving groove are symmetrical up and down, and a reset spring is fixedly arranged between the clamping block and the inner wall of the receiving groove.

9. A soil sampling device for Chinese medicinal material planting according to claim 8, characterized in that: The sampling assembly also includes a sampling rack, and the three sampling pieces are fixedly arranged on the sampling rack at equal distances from top to bottom. The sampling piece is U-shaped and its U-shaped opening faces away from the sampling rack. Guide bars are fixedly arranged on the upper and lower end surfaces of the two horizontal sections of the sampling piece. Guide grooves corresponding to the guide bars are opened on the inner walls of the sampling grooves, and the outer sides of the guide grooves are chamfered.

10. A soil sampling method, which is accomplished by using the soil sampling device for Chinese medicinal material planting according to claim 9, characterized in that: The following steps are involved: S1. Determine the sampling center: After selecting the sampling site, manually measure the center of the sampling site and insert the center stake at the center, then assemble the mounting frame and the sampling mechanism onto the center stake; S2. Adjust sampling spacing and angle: adjust the spacing between adjacent equidistant blocks according to the size of the soil sample; S3, single sampling operation: insert the plug-in column into the plug-in tube of the equidistant block to lock the sampling position, then manually press the arc sections on both sides of the operation panel, the operation panel drives the sampling tube to be inserted into the soil, the soil at the sampling point enters the sampling tube, and the preliminary sampling is completed; S4, sampling: lift the sampling tube upward, insert the partition plate 2 into the sampling tube first, and then insert the two partition plates 1 downward into the sampling tube, then manually hold the sampling rack so that the left ends of the two horizontal sections of the sampling piece are respectively in contact with the inclined surfaces of the corresponding card blocks, unlock the sealing plate and the support plate, and then hold the sampling rack again and insert it into the sampling tube, so that the sample soil enters the U-shaped area of ​​the sampling piece, and then pull out the sampling rack to obtain the final sample soil required for the sampling point; S5. Repeat sampling and sampling: manually push the support plate and the sealing plate to reset the sealing plate and put it in the initial locked state, pull out the partition one and the partition two and clean the partition one and the sampling piece, pull out the plug-in column, move the operation panel, repeat the above sampling operation, and then rotate the mounting frame to repeat the sampling.

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