A soil fertilizer nutrient detection sampling device

Abstract

The present application relates to soil fertilizer sampling detection technical field, disclose a kind of soil fertilizer nutrient detection sampling device, including sampler, the drive motor is fixedly installed at the top of sampler, the auger bit is fixedly installed at the bottom of drive motor output shaft, the drill rod is arranged in the bottom of sampler, the present application is set by the setting of movable assembly, rotary disc is contacted with slide bar by the arc slot of surface opening, and slide bar is driven along the surface of rotary disc, in turn, fixed rod pushes fixed plate to move, the movement of fixed plate will drive drill rod to slide in the bottom of connecting ring, simultaneously, drill rod will also slide on the surface of connecting rod, so that it drives drill rod to expand or reduce by connecting rod, to change the size of drill rod in use process, prevent different soil texture to drill rod aperture different requirements, can be flexibly adjusted according to actual soil condition, improve sampling accuracy, enhance device applicability, and optimize sampling convenience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soil fertilizer sampling and detection, and particularly relates to a nutrient detection sampling device for soil fertilizer. BACKGROUND

[0002] Soil, as the basic carrier of agricultural production, directly affects the growth and development, yield and quality of crops due to the nutrient status of the contained fertilizer. In agricultural production practice, the nutrient of soil fertilizer is not simply and intuitively presented, but involves complex physical and chemical properties. Soil, as the basic carrier of agricultural production, directly affects the growth and development, yield and quality of crops due to the nutrient status of the contained fertilizer. Accurate detection of the nutrient content in soil fertilizer is of great importance to the rational development of fertilization schemes, the improvement of soil fertility management level, and the realization of sustainable agricultural development. A reliable and efficient sampling device is a key prerequisite to obtain samples that truly reflect the nutrient status of soil fertilizer. Through scientific and reasonable sampling, the data of subsequent detection and analysis can be ensured to be representative and accurate, thereby providing a strong basis for precision agriculture decision-making.

[0003] At present, many soil sampling devices are equipped with fixed drill rod diameters, which cannot be adjusted according to different soil textures. When facing compacted soil, such as clay soil, if the drill rod diameter is too large, the drill rod will be subjected to a large resistance during drilling and will be difficult to smoothly penetrate the soil, often requiring a large amount of time and power, and even the drill bit may not be able to continue drilling, resulting in the failure of sampling work. On the contrary, in a relatively loose soil environment, such as sandy soil, a too small drill rod diameter can only obtain a small amount of sample each time, and in order to achieve sufficient detection sample quantity, multiple sampling operations need to be frequently performed, which undoubtedly greatly increases the overall sampling time, reduces the sampling efficiency and device applicability, and causes the reduction of sampling accuracy and the decrease of sampling convenience. SUMMARY

[0004] The present application relates to the technical field of soil fertilizer sampling and detection, and particularly relates to a nutrient detection sampling device for soil fertilizer.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] The utility model provides a kind of soil fertilizer nutrient detection sampling device, including sampler, the drive motor is fixedly installed on the top of the sampler, the screw drill head is fixedly installed on the output shaft bottom of the drive motor, the drill rod is arranged in the bottom of the sampler;It further includes movable assembly, for changing the aperture of drill rod;Fixed assembly, for the aperture of drill rod is positioned;Moving assembly, for the soil fertilizer of screw drill head and the inside plug of drill rod is handled;The movable assembly includes: fixed ring, the fixed ring is arranged on the surface of screw drill head, the connecting ring is fixedly installed in the fixed ring, the rotating disc is rotatably connected in the fixed ring, the sliding rod is slidably connected on the surface of the rotating disc, the fixed rod is fixedly installed on the outside of the sliding rod, the fixed rod penetrates fixed ring, the fixed plate is fixedly installed on the surface of the fixed rod, the drill rod is fixedly installed on the inboard of fixed plate, the connecting rod is slidably connected in the drill rod, and the drill rod is slidably connected in the bottom of connecting ring.

[0007] The fixed assembly includes: limiting block, the limiting block is fixedly installed in the inside of fixed ring, the control block is fixedly installed on the surface of the rotating disc, the operating block is slidably connected in the inside of the control block, the operating block, the plug rod is fixedly installed in the inboard of the operating block, and the plug rod is inserted in the inboard of limiting block.

[0008] The moving assembly includes: rotating shaft, the rotating shaft is rotatably connected in the inside of fixed shaft, the sliding rod is slidably connected on the surface of the rotating shaft, the support plate is fixedly installed on the bottom of the sliding rod, the support plate is slidably connected on the outer wall of fixed ring, the threaded rod is fixedly installed on the bottom of the rotating shaft, the spiral rod is fixedly installed on the bottom of the threaded rod, the sliding block is threadedly connected on the surface of the threaded rod, the sliding block is slidably connected in the inboard of connecting ring, the cleaning ring is rotatably connected on the bottom of the sliding block, and the cleaning ring is spirally connected on the surface of the spiral rod.

[0009] Preferably, the bottom of the sampler is fixedly installed with the fixed shaft, the bottom of the fixed shaft is fixedly installed with the connecting strip, and the fixed ring is fixedly installed at the bottom of the connecting strip.

[0010] Preferably, the support plate is provided with two groups, and the two groups of support plates are symmetrically arranged with the center line of the sampler as the axis of symmetry.

[0011] Preferably, the surface of the fixed ring is provided with a groove, and the outside of the fixed ring is provided with a strip-shaped groove.

[0012] Preferably, the surface of the rotating disc is provided with an arc-shaped groove, and the surface of the rotating shaft is provided with an arc-shaped sliding groove.

[0013] Preferably, the support plate is provided with three blocks, and the three blocks of the connecting rod are consistent with the inside of the drill rod.

[0014] The beneficial effects of the present application are:

[0015] 1. The present application sets up a movable assembly, rotates the rotating disc, and makes the sliding rod abut the arc-shaped groove on the surface, drives the sliding rod to slide along the surface of the rotating disc, and then drives the fixed plate to move through the fixed rod, the movement of the fixed plate drives the drill rod to slide at the bottom of the connecting ring, and the drill rod also slides on the surface of the connecting rod, so that the drill rod is expanded or reduced through the connecting rod, so as to change the size of the drill rod in use, prevent different requirements for the hole diameter of the drill rod for different soil textures, flexibly adjust according to the actual soil condition, improve the sampling accuracy, enhance the applicability of the device, and optimize the sampling convenience.

[0016] 2. The present application sets up a fixed assembly, after adjustment, in order to make the drill rod keep the current set hole diameter size for sampling work, it is necessary to position it, by sliding the operation block in the operation control block, the operation block drives the inserting rod to move towards the inside of the fixed ring, when the operation block moves, the inserting rod is accurately inserted in the inside of the limiting block, the clamping effect of the inserting rod and the limiting block is used to limit the rotation of the rotating disc, and then the relative position of the drill rod parts is fixed, so as to prevent the change of the hole diameter of the drill rod caused by vibration and other external factors in the sampling process, and ensure the accuracy and stability of sampling.

[0017] 3. The present application sets up a moving assembly, after sampling is completed, the ground will release the reverse abutment to the supporting plate, the sliding rod is driven to slide on the surface of the rotating shaft by the gravity of the supporting plate, when the sliding rod slides, the rotating shaft and the threaded rod are synchronously rotated, due to the threaded connection relationship between the threaded rod and the sliding block, the cleaning ring rotatingly connected at the bottom of the sliding block spirally moves along the surface of the spiral rod during the sliding process, when the cleaning ring moves on the surface of the spiral rod, the rotation of the cleaning ring is driven through the spiral groove, the soil and fertilizer blocked in the spiral drill bit surface and the drill rod are scraped, pushed and cleaned, and the blockage is gradually cleaned out of the spiral drill bit and the drill rod, so as to improve the detection quality and ensure the continuity of equipment use. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view structural schematic diagram of a soil fertilizer nutrient detection sampling device proposed by the present application;

[0019] Figure 2 It is a sectional structure schematic diagram of a soil fertilizer nutrient detection sampling device proposed by the present application;

[0020] Figure 3 It is a bottom structure schematic diagram of a soil fertilizer nutrient detection sampling device proposed by the present application;

[0021] Figure 4This is a front view schematic diagram of the moving components of a soil fertilizer nutrient detection and sampling device proposed in this invention;

[0022] Figure 5 This is a front view schematic diagram of the fixed component of a soil fertilizer nutrient detection and sampling device proposed in this invention;

[0023] Figure 6 This is a front view schematic diagram of the moving component of a soil fertilizer nutrient detection and sampling device proposed in this invention;

[0024] Figure 7 This is a front view schematic diagram of the rotating structure of a soil fertilizer nutrient detection and sampling device proposed in this invention.

[0025] In the diagram: 1. Sampling machine; 2. Drive motor; 3. Spiral drill bit; 4. Drill rod; 5. Moving assembly; 51. Fixing ring; 5100. Groove; 5101. Strip groove; 52. Turntable; 520. Arc groove; 53. Slide rod; 54. Fixing rod; 55. Fixing plate; 56. Connecting rod; 57. Fixing shaft; 58. Connecting strip; 59. Connecting ring; 6. Fixing assembly; 61. Limiting block; 62. Control block; 63. Operating block; 64. Insert rod; 7. Moving assembly; 71. Rotating shaft; 710. Arc groove; 72. Sliding rod; 73. Support plate; 74. Threaded rod; 75. Spiral rod; 76. Sliding block; 77. Cleaning ring. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see the appendix Figure 1 - Appendix Figure 7 A soil fertilizer nutrient detection and sampling device includes a sampler 1, a drive motor 2 fixedly installed on the top of the sampler 1, a spiral drill bit 3 fixedly installed on the bottom of the output shaft of the drive motor 2, and a drill rod 4 provided at the bottom of the sampler 1.

[0029] It also includes an active component 5 for changing the bore diameter of the drill rod 4;

[0030] Fixing component 6 is used to position the bore diameter of drill rod 4;

[0031] The movable component 7 is used to treat the soil fertilizer that is blocked inside the auger bit 3 and the drill rod 4;

[0032] First, the active component 5 includes: a fixed ring 51, which is set on the surface of the auger bit 3. A connecting ring 59 is fixedly installed inside the fixed ring 51. A turntable 52 is rotatably connected inside the fixed ring 51. A slide rod 53 is slidably connected to the surface of the turntable 52. A fixed rod 54 is fixedly installed on the outside of the slide rod 53. The fixed rod 54 passes through the fixed ring 51. A fixed plate 55 is fixedly installed on the surface of the fixed rod 54. The drill rod 4 is fixedly installed inside the fixed plate 55. A connecting rod 56 is slidably connected inside the drill rod 4. The drill rod 4 is slidably connected to the bottom of the connecting ring 59. The stability of the drill rod 4 when adjusting its size can be achieved by sliding it at the bottom of the connecting ring 59. The size of the hole can also be adjusted by the drill rod 4. The adjustability between the drill rod 4 and the connecting rod 56 plays an important role when the drill rod 4 is blocked. Under normal conditions, the connecting rod 56 maintains a certain relative position to the inner wall of the drill rod 4. However, once a blockage enters the drill rod 4, as the drill rod 4 adjusts in conjunction with the connecting rod 56, relative sliding occurs between the two. This relative sliding breaks the original tight adhesion between the blockage and the inner wall of the drill rod 4, preventing the blockage from becoming increasingly firmly attached to the inner wall of the drill rod 4 due to prolonged static adhesion and compression. For example, some damp soil particles or clumps of fertilizer may be loosely piled up in the early stages of blockage, but without this adjustment mechanism, they can easily become more compacted and tightly bound to the inner wall during the vibration of the drill rod 4 and subsequent sampling, making subsequent cleaning extremely difficult. By adjusting the drill rod 4 and the connecting rod 56, a relative displacement occurs between the blockage and the inner wall, effectively loosening it and creating favorable conditions for further cleaning work. This makes it easier to start the cleaning process and reduces the initial difficulty of cleaning.

[0033] Secondly, a fixed shaft 57 is fixedly installed at the bottom of the sampler 1, and a connecting strip 58 is fixedly installed at the bottom of the fixed shaft 57. A fixed ring 51 is fixedly installed at the bottom of the connecting strip 58. The connection between the fixed ring 51 and the connecting strip 58 can improve the stability of the connection of the fixed ring 51.

[0034] Furthermore, the fixing component 6 includes: a limiting block 61, which is fixedly installed inside the fixing ring 51; a control block 62 is fixedly installed on the surface of the turntable 52; an operating block 63 is slidably connected inside the control block 62; an insertion rod 64 is fixedly installed inside the operating block 63; the insertion rod 64 is inserted into the inside of the limiting block 61; after the hole diameter of the drill rod 4 can be adjusted by the movable component 5, the fixing component 6 is used to fix the current hole diameter state to ensure that the hole diameter will not change due to external forces or other factors during the sampling process, thus avoiding problems such as inaccurate sample volume and changes in sampling depth.

[0035] Furthermore, the moving component 7 includes: a rotating shaft 71, which is rotatably connected inside the fixed shaft 57; a sliding rod 72 is slidably connected to the surface of the rotating shaft 71; a support plate 73 is fixedly installed at the bottom of the sliding rod 72 and slidably connected to the outer wall of the fixed ring 51; a threaded rod 74 is fixedly installed at the bottom of the rotating shaft 71; a helical rod 75 is fixedly installed at the bottom of the threaded rod 74; a sliding block 76 is threadedly connected to the surface of the threaded rod 74; the sliding block 76 slides inside the connecting ring 59; and the threaded rod 74 can be used to drive the sliding block 76 to slide downward when the threaded rod 74 rotates.

[0036] Furthermore, a cleaning ring 77 is rotatably connected to the bottom of the sliding block 76. The cleaning ring 77 is spirally connected to the surface of the spiral rod 75. When the sliding block 76 slides through the threaded rod 74, it also drives the cleaning ring 77 to slide downwards. By sliding the cleaning ring 77 on the surface of the spiral rod 75, the spiral grooves on the surface of the spiral rod 75 are created, allowing the cleaning ring 77 to slide downwards and rotate simultaneously. This enables it to scrape the surface of the spiral drill bit 3 and the inside of the drill rod 4 from multiple angles. For soil and fertilizer blockages attached to the inner wall of the drill rod 4 and the surface of the spiral drill bit 3 at different locations and in different directions, whether perpendicular to the inner wall, parallel to the inner wall, or piled up at irregular angles, the cleaning ring 77 can reach different contact surfaces and scrape directions through its own rotation and sliding, thereby achieving all-round scraping and cleaning. This avoids the situation of missing items due to cleaning in only one direction, greatly improving the cleaning effect of blockages and more thoroughly removing various debris attached to them.

[0037] Finally, two sets of support plates 73 are provided, and both sets of support plates 73 are symmetrically arranged about the center line of the sampler 1. By symmetrically arranging the two sets of support plates 73 about the center line of the sampler 1, during use, when support is needed for the sampling device, the two sets of support plates 73 simultaneously contact the ground, relying on their contact with the ground to bear the weight of the entire sampling device and various external forces generated during the sampling process, such as the weight of the equipment itself and the reaction force generated when the drill rod 4 drills into the soil. Furthermore, due to the symmetrical arrangement, the force can be evenly distributed on the two sets of support plates 73, making the stress more balanced.

[0038] The surface of the fixing ring 51 has a groove 5100, which can improve the connection between the control block 62 and the turntable 52. The outer side of the fixing ring 51 has a strip groove 5101, which can allow the support plate 73 to slide on the surface of the fixing ring 51, thereby improving the stability of the movement of the support plate 73.

[0039] The surface of the turntable 52 has an arc-shaped groove 520. The arc-shaped groove 520 on the surface of the turntable 52 can be used to drive the sliding rod 53 to slide when the turntable 52 rotates. The surface of the rotating shaft 71 has an arc-shaped groove 710. The arc-shaped groove 710 on the surface of the rotating shaft 71 can be used to make the sliding rod 72 rotate when it slides against the rotating shaft 71.

[0040] The support plate 73 has a T-shaped cross-section, which enhances its support for the ground. Three connecting rods 56 are provided, and these three rods fit into the interior of the drill rod 4. These connecting rods enhance the structural strength of the drill rod 4 during operation, preventing deformation under soil resistance, external impact, or during borehole adjustment. They also help to more effectively disperse and push away blockages inside the drill rod 4, further improving its durability and efficiency, ensuring continuous and stable collection of soil and fertilizer samples. The fixing plate 55 has an L-shaped cross-section, which improves the connection between the fixing plate 55 and the drill rod 4.

[0041] Please see the appendix Figure 1 - Appendix Figure 7In a preferred embodiment, the soil fertilizer nutrient detection and sampling device uses a sampler 1 as its basic support structure. A drive motor 2 at the top drives the auger drill bit 3 to rotate, causing the drill rod 4 to drill into the soil to obtain samples. The movable component 5, fixed component 6, and moving component 7 work together to change the borehole diameter of the drill rod 4, position the borehole diameter, and remove internal blockages, ensuring smooth sampling and meeting different sampling needs. When it is necessary to change the borehole diameter of the drill rod 4, the manual operation control block 62 and operating lever 63 drive the turntable 52 to rotate. During the rotation of the turntable 52, due to its sliding connection with the slide rod 53, the arc-shaped groove 520 on the surface of the turntable 52 abuts against the slide rod 53, causing the slide rod 53 to slide along the surface of the turntable 52. When the slide rod 53 slides, it drives the fixed rod 54 to move. When the fixed rod 54 moves, it pushes the fixed plate 55 to move. The movement of 55 causes the drill rod 4 to slide at the bottom of the connecting ring 59. At the same time, the drill rod 4 also slides on the surface of the connecting rod 56, causing it to expand or shrink through the connecting rod 56. Through this linkage, the relative positions of the various parts of the drill rod 4 are changed, thereby adjusting the size of the drill rod 4 hole to adapt to the collection of soil fertilizer samples under different soil textures and different testing requirements. In looser soils, the hole diameter can be appropriately increased to ensure the sampling volume, while in compact soils, the hole diameter can be decreased to facilitate smooth drilling. This prevents different requirements for the drill rod 4 hole diameter for different soil textures. If the drill rod 4 hole diameter remains unchanged, in compact soils, an excessively large hole diameter may make it difficult for the drill rod 4 to drill smoothly, consuming a lot of time and power, and may even prevent sampling from being completed. In loose soils, an excessively small hole diameter will result in too little sample volume each time, requiring frequent sampling operations and increasing the overall sampling time. The adjustable drill rod with four holes allows for flexible adjustments based on actual soil conditions, improving sampling accuracy, enhancing device applicability, and optimizing sampling convenience.

[0042] When the active component 5 completes the adjustment of the bore diameter of the drill rod 4, the operating block 63 needs to be slid on the surface of the control block 62 first, so that the insertion rod 64 inside the operating block 63 moves. When the insertion rod 64 moves, the limiting block 61 will release the restriction on the insertion rod 64, so that the rotation of the turntable 52 can be driven by the control operating block 63. After the adjustment is completed, in order to keep the drill rod 4 at the currently set bore diameter for sampling, it needs to be positioned. By sliding the operating block 63 inside the control block 62, the operating block 63 drives the insertion rod 64 to move closer to the inside of the fixing ring 51. When the operating block 63 moves, it will accurately insert the insertion rod 64 into the inside of the limiting block 61. The locking action between the insertion rod 64 and the limiting block 61 restricts the rotation of the turntable 52, thereby fixing the relative position of each component of the drill rod 4, preventing the bore diameter of the drill rod 4 from changing due to external forces such as vibration during the sampling process, and ensuring the accuracy and stability of the sampling.

[0043] When the sampling device is in use, the support plate 73 needs to be driven to contact the ground to support the sampling device. After sampling is completed, the ground will release the support plate 73 and reverse the contact. The gravity of the support plate 73 will drive the sliding rod 72 to slide on the surface of the rotating shaft 71. Since the surface of the rotating shaft 71 has an arc-shaped groove 710, the sliding rod 72 will drive the rotating shaft 71 to rotate when it slides. When the rotating shaft 71 rotates, it will drive the threaded rod 74 to rotate synchronously. Due to the threaded connection between the threaded rod 74 and the sliding block 76, the sliding block 76 will slide downward along the axial direction of the threaded rod 74 inside the connecting ring 59. The cleaning ring 77, which is rotatably connected to the bottom of the sliding block 76, moves spirally along the surface of the spiral rod 75 during the sliding process. When the cleaning ring 77 moves on the surface of the spiral rod 75, it will drive the rotation of the cleaning ring 77 through the spiral groove. During the movement, the cleaning ring 77 uses its spiral connection with the spiral rod 75 and its own structural characteristics to scrape and push the soil and fertilizer blocked on the surface of the spiral drill bit 3 and inside the drill rod 4, gradually clearing the blockage from the spiral drill bit 3 and inside the drill rod 4, restoring its normal sampling channel, ensuring that the sampling work can continue smoothly, preventing the sampling channel from being blocked and affecting subsequent sampling and detection accuracy, improving the quality of detection and ensuring the continuity of equipment use.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment includes only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A soil fertilizer nutrient detection and sampling device, comprising a sampler (1), characterized in that, The top of the sampler (1) is fixedly equipped with a drive motor (2), the bottom of the output shaft of the drive motor (2) is fixedly equipped with a spiral drill bit (3), and the bottom of the sampler (1) is equipped with a drill rod (4). It also includes an active component (5) for changing the bore diameter of the drill rod (4); Fixing component (6) is used to position the bore diameter of drill rod (4); The moving component (7) is used to treat the soil fertilizer that is blocked inside the auger bit (3) and the drill rod (4); The active component (5) includes: a fixed ring (51), which is disposed on the surface of the auger bit (3), a connecting ring (59) is fixedly installed inside the fixed ring (51), a turntable (52) is rotatably connected inside the fixed ring (51), a slide rod (53) is slidably connected to the surface of the turntable (52), a fixed rod (54) is fixedly installed on the outside of the slide rod (53), the fixed rod (54) passes through the fixed ring (51), a fixed plate (55) is fixedly installed on the surface of the fixed rod (54), the drill rod (4) is fixedly installed on the inside of the fixed plate (55), a connecting rod (56) is slidably connected inside the drill rod (4), and the drill rod (4) is slidably connected to the bottom of the connecting ring (59); The fixing component (6) includes: a limiting block (61), which is fixedly installed inside the fixing ring (51); a control block (62) is fixedly installed on the surface of the turntable (52); an operating block (63) is slidably connected inside the control block (62); a plug rod (64) is fixedly installed on the inner side of the operating block (63); and the plug rod (64) is inserted into the inner side of the limiting block (61). The moving component (7) includes: a rotating shaft (71) rotatably connected to the inside of a fixed shaft (57), a sliding rod (72) slidably connected to the surface of the rotating shaft (71), a support plate (73) fixedly installed at the bottom of the sliding rod (72), the support plate (73) slidably connected to the outer wall of the fixed ring (51), a threaded rod (74) fixedly installed at the bottom of the rotating shaft (71), a helical rod (75) fixedly installed at the bottom of the threaded rod (74), a sliding block (76) threadedly connected to the surface of the threaded rod (74), the sliding block (76) sliding on the inner side of the connecting ring (59), a cleaning ring (77) rotatably connected to the bottom of the sliding block (76), and the cleaning ring (77) helically connected to the surface of the helical rod (75).

2. The soil fertilizer nutrient detection and sampling device according to claim 1, characterized in that, The sampling machine (1) has a fixed shaft (57) fixedly installed at the bottom, and a connecting strip (58) fixedly installed at the bottom of the fixed shaft (57). The fixed ring (51) is fixedly installed at the bottom of the connecting strip (58).

3. The soil fertilizer nutrient detection and sampling device according to claim 1, characterized in that, The support plate (73) is provided in two sets, and both sets of the support plate (73) are symmetrically arranged with the center line of the sampler (1) as the axis of symmetry.

4. The soil fertilizer nutrient detection and sampling device according to claim 1, characterized in that, The surface of the fixing ring (51) is provided with a groove (5100), and the outer side of the fixing ring (51) is provided with a strip groove (5101).

5. The soil fertilizer nutrient detection and sampling device according to claim 1, characterized in that, The surface of the turntable (52) begins to have an arc-shaped groove (520), and the surface of the rotating shaft (71) begins to have an arc-shaped sliding groove (710).

6. The soil fertilizer nutrient detection and sampling device according to claim 1, characterized in that, The support plate (73) has a T-shaped cross section, and there are three connecting rods (56), which fit inside the drill rod (4). The fixing plate (55) has an L-shaped cross section.

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