A layered sampling device for soil testing sampling

Abstract

The application discloses a layered sampling device for soil detection sampling, and particularly relates to the field of soil sampling, which comprises a positioning mechanism, a plurality of sampling mechanisms are arranged on the outer wall of the positioning mechanism, the positioning mechanism comprises a support type bottom frame, the sampling mechanism comprises a limiting plate fixedly installed on the outer wall of the support type bottom frame, a balance ring is fixedly installed on the horizontal center line of the limiting plate, balance blocks are fixedly installed on the outer wall of the balance ring, adjusting rods are rotatably installed on the two sides of the balance blocks, threaded grooves are formed in the outer walls of the two adjusting rods, and a connecting sleeve is arranged on the outer wall of each adjusting rod, and a limiting type sliding sleeve is fixedly installed on one side of the connecting sleeve. The application is provided with a plurality of sampling cylinders capable of moving horizontally on the outer wall of the support type bottom frame in a ring shape in a state of equal intervals, can synchronously sample at different heights, and can synchronously sample at multiple points at the same height, so that the application is more convenient to use and more convenient to improve work efficiency.

Description

Technical Field

[0001] This invention relates to the field of soil sampling technology, and more specifically, to a stratified sampling device for soil testing and sampling. Background Technology

[0002] Soil sample preparation refers to the process of mixing, drying, grinding, and sieving soil samples (disturbed during sampling) after collection from the field. Besides immediate analysis of properties related to microbial activity, redox conditions, and volatile substances (such as ferrous oxide, reduced sulfur, easily reduced manganese, nitrate nitrogen, ammonium nitrogen, easily degradable and volatile organic compounds), fresh soil samples collected in the field need to be dried promptly to inhibit soil microbial activity and chemical changes, making the analytical results more stable and facilitating long-term preservation. Fresh samples should first have intrusive bodies (such as plant roots, insect remains, and bricks and stones) and newly formed organisms (such as iron-manganese nodules and limestone nodules) removed, and then dried as quickly as possible.

[0003] Currently, when performing stratified soil sampling, a deep pit is first dug at the sampling point, and then multiple sampling tubes are inserted into the side wall of the pit at the same horizontal height. Afterwards, the soil around the outside of the pit is excavated, allowing the sampling tubes to fall from the side wall of the pit and obtain multiple soil samples at the same horizontal height. However, this method is complex, and when multiple layers of different soil samples are needed, the excavation process is lengthy, resulting in low work efficiency and inconvenience for practical use. Therefore, this invention proposes a stratified sampling device for soil testing to solve the above problems. Summary of the Invention

[0004] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide a stratified sampling device for soil testing and sampling. By arranging multiple horizontally movable sampling cylinders in a ring-shaped, equidistant manner on the outer wall of a supporting base frame, synchronous sampling can be performed at different heights, and synchronous multi-point sampling can be performed at the same height, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a stratified sampling device for soil testing and sampling, comprising a positioning mechanism, wherein a plurality of sampling mechanisms are provided on the outer wall of the positioning mechanism;

[0006] The positioning mechanism includes a supporting base frame, and the sampling mechanism includes a limiting plate fixedly installed on the outer wall of the supporting base frame. A balance ring is fixedly installed on the horizontal center line of the limiting plate. A balance block is fixedly installed on the outer wall of the balance ring. Adjusting rods are rotatably installed on both sides of the balance block. Threaded grooves are opened on the outer walls of the two adjusting rods. Connecting sleeves are provided on the outer walls of the two adjusting rods. A limiting sliding sleeve is fixedly installed on one side of the connecting sleeve. A positioning push rod arranged horizontally is slidably installed inside the limiting sliding sleeve. A sampling cylinder is fixedly connected to one end of the positioning push rod that extends out of the outer wall of the supporting base frame.

[0007] The positioning mechanism is provided with a pressing mechanism at the top, and the outer wall of the pressing mechanism is provided with a soil loosening mechanism.

[0008] By adopting the above technical solution, multiple positioning push rods and sampling cylinders can be simultaneously squeezed into the inner wall of the pit from the corresponding horizontal plane, so that the sampling cylinders are embedded into the side wall of the sampling pit. This allows multiple sampling cylinders to simultaneously perform multi-point quantitative sampling on the inner wall of the sampling pit, which is convenient and quick to use and can improve work efficiency.

[0009] In a preferred embodiment, the threaded grooves on the outer walls of the two adjusting rods are arranged in opposite directions, the connecting sleeves are threadedly connected to the outer walls of the adjusting rods, and the two connecting sleeves are symmetrically arranged about the horizontal center line of the balance block.

[0010] By adopting the above technical solution, the two limiting sliding sleeves can move synchronously in opposite directions, thereby changing the position of the corresponding sampling cylinder. When the entire device is inserted into the pit for multi-layer sampling, it can be sampled according to different point requirements, which is very convenient to use and more convenient for practical use.

[0011] In a preferred embodiment, the number of limiting plates is set to two, and the outer walls of the two limiting plates are provided with sliding grooves arranged in a through-type manner, and the limiting type sliding sleeve is slidably installed inside the sliding grooves.

[0012] By adopting the above technical solution, when adjusting the distance between the two connecting sleeves, the limiting sliding sleeve can be stably slid in the inner cavity of the slide groove for displacement adjustment, making the overall adjustment of the sampling point smoother.

[0013] In a preferred embodiment, a gear ring is fixedly installed on the top of the adjusting rod, an adjusting plate is rotatably installed on the top of the supporting base frame, and an arc-shaped gear plate that meshes with the adjusting plate is fixedly installed on the outer wall of the adjusting plate.

[0014] By adopting the above technical solution, the corresponding gear ring is deflected by rotating the adjusting plate, which in turn drives the adjusting rod to rotate, thereby changing the distance between the two connecting sleeves and the limiting sliding sleeve.

[0015] In a preferred embodiment, a plurality of limiting strips are fixedly installed on the outer wall of the positioning push rod, a first telescopic spring is fixedly installed between the limiting strips and the limiting sleeve, a plurality of positioning grooves are fixedly installed on the inner wall of the limiting sleeve, and the plurality of limiting strips are slidably installed in the inner cavity of the corresponding positioning groove.

[0016] By adopting the above technical solution, the positioning push rod and the sampling tube can only move in a horizontal straight line, thereby avoiding displacement or tilting of the sampling tube during the sampling process, which would affect the accuracy of soil sampling in the positioning area.

[0017] In a preferred embodiment, a limiting positioning seat is fixedly installed at the bottom of the supporting base frame, and a polygonal limiting groove is provided inside the limiting positioning seat;

[0018] The pressing mechanism includes a rotating rod disposed on the top of the supporting base frame. A threaded rod is fixedly connected to the bottom of the rotating rod, and a pressing block is fixedly connected to the bottom of the threaded rod. A polygonal positioning block is rotatably mounted on the bottom of the pressing block. The polygonal positioning block is inserted into the inner cavity of the polygonal limiting groove. The pressing block is elliptical in shape.

[0019] By adopting the above technical solution, when the entire extrusion block is rotated, the outer wall of the extrusion block can sequentially press against one side of the positioning push rod, thereby causing multiple sampling cylinders to be forcefully inserted into the side wall of the sampling pit.

[0020] In a preferred embodiment, the soil loosening mechanism includes a threaded sleeve threaded to the outer wall of a threaded rod. Two sliding rods are fixedly installed on the outer wall of the threaded sleeve. A first pressure plate is fixedly installed on the outer wall of each of the two sliding rods. Multiple second pressure plates are fixedly installed on the outer wall of the first pressure plate in a ring-shaped manner at equal intervals.

[0021] Both slide bars have limit frames slidably installed on their outer walls. A connecting rod that is fixedly connected to the supporting base frame is fixedly installed on one side of the limit frame. A second telescopic spring is fixedly installed between the first pressure plate and the supporting base frame.

[0022] By adopting the above technical solution, multiple second pressure plates are driven into the soil around the sampling pit from top to bottom, and the multiple second pressure plates are made to contact the side wall of the sampling tube, which loosens the soil around the sampling tube, expands the outer circumference diameter of the sampling pit, and prevents the sampling tube from getting stuck inside the side wall of the sampling pit, so as to facilitate the rapid and simultaneous removal of multiple sampling tubes.

[0023] The technical effects and advantages of this invention are as follows:

[0024] 1. The present invention has multiple horizontally movable sampling cylinders arranged in a ring at equal intervals on the outer wall of the supporting base frame. When the whole is extended into the sampling pit, the multiple sampling cylinders are horizontally displaced and embedded into the side wall of the sampling pit, which can simultaneously sample at different heights and perform multi-point sampling at the same height. This makes it more convenient to use and improves work efficiency.

[0025] 2. By setting an adjustment rod and connecting sleeve for rotation adjustment, the distance between the two limiting sliding sleeves is changed, which in turn changes the distance between the two sampling cylinders. This makes it more convenient to adjust when sampling soil at different heights inside the sampling pit, and makes it more practical.

[0026] 3. In this invention, while the rotating pressing mechanism drives multiple sampling cylinders to move synchronously into the soil for sampling, the threaded sleeve moves downward on the outer wall of the rotating threaded rod. This causes the squeezing block to drive the polygonal positioning block to simultaneously penetrate into the soil around the sampling pit, thereby loosening the soil around the sampling pit. This further loosens the multiple sampling cylinders from the soil, preventing the sampling cylinders from getting stuck inside the side wall of the sampling pit, so that the multiple sampling cylinders can be quickly and synchronously removed. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 This is a partial structural diagram of the pressure-reducing mechanism and the soil-loosening mechanism of the present invention.

[0029] Figure 3 This is a partial structural diagram of the positioning mechanism and sampling mechanism of the present invention.

[0030] Figure 4 For the present invention Figure 3 Enlarged view of the structure of part A.

[0031] Figure 5 This is a cross-sectional view of the structure of the present invention.

[0032] Figure 6 For the present invention Figure 5 Enlarged view of the structure of part B.

[0033] Figure 7 For the present invention Figure 5 Enlarged view of the C-section structure.

[0034] The attached figures are labeled as follows: 1. Positioning mechanism; 101. Supporting base frame; 102. Limiting positioning seat; 103. Polygonal limiting groove; 104. Adjustable rotating plate; 105. Arc-shaped gear plate; 2. Sampling mechanism; 21. Limiting plate; 22. Balance block; 23. Adjusting rod; 24. Connecting sleeve; 25. Limiting sliding sleeve; 26. Gear ring; 27. Positioning push rod; 28. Limiting strip; 29. ​​First telescopic spring; 210. Sampling cylinder; 211. Balance ring; 212. Slide groove; 213. Positioning groove; 3. Pressing mechanism; 31. Rotating rod; 32. Threaded rod; 33. Extrusion block; 34. Polygonal positioning block; 4. Soil loosening mechanism; 41. Threaded sleeve; 42. Slide rod; 43. First pressure plate; 44. Second pressure plate; 45. Connecting rod; 46. Limiting frame; 47. Second telescopic spring. Detailed Implementation

[0035] 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.

[0036] Refer to the instruction manual appendix Figure 1-7 A stratified sampling device for soil testing and sampling according to an embodiment of the present invention, such as... Figure 1 As shown, it includes a positioning mechanism 1, and multiple sampling mechanisms 2 are provided on the outer wall of the positioning mechanism 1;

[0037] Reference Figure 3-4 As shown, the positioning mechanism 1 includes a supporting base frame 101, and the sampling mechanism 2 includes a limiting plate 21 fixedly installed on the outer wall of the supporting base frame 101. A balance ring 211 is fixedly installed on the horizontal center line of the limiting plate 21. A balance block 22 is fixedly installed on the outer wall of the balance ring 211. Adjusting rods 23 are rotatably installed on both sides of the balance block 22. Threaded grooves are opened on the outer walls of both adjusting rods 23. Connecting sleeves 24 are provided on the outer walls of both adjusting rods 23. A limiting sliding sleeve 25 is fixedly installed on one side of the connecting sleeve 24. Figure 4 and Figure 6 As shown, a horizontally arranged positioning push rod 27 is slidably installed inside the limiting sliding sleeve 25. The end of the positioning push rod 27 extending out of the outer wall of the supporting base frame 101 is fixedly connected to a sampling cylinder 210. The purpose of this arrangement is that when the supporting base frame 101 is placed into the excavated sampling pit, by pressing multiple positioning push rods 27 and sampling cylinders 210 against the inner wall of the pit from the corresponding horizontal plane, the sampling cylinders 210 are embedded into the side wall of the sampling pit. This allows multiple sampling cylinders 210 to simultaneously perform multi-point quantitative sampling on the inner wall of the sampling pit, which is convenient and quick to use and can improve work efficiency.

[0038] The top of the positioning mechanism 1 is provided with a pressing mechanism 3, and the outer wall of the pressing mechanism 3 is provided with a loosening mechanism 4.

[0039] As a further expansion of this plan, refer to Figure 4 As shown, the threaded grooves on the outer walls of the two adjusting rods 23 are arranged in opposite directions. The connecting sleeves 24 are threadedly connected to the outer walls of the adjusting rods 23, and the two connecting sleeves 24 are symmetrically arranged about the horizontal center line of the balance block 22. The purpose of this arrangement is to enable the connecting sleeves 24 on the outer walls of the two adjusting rods 23 to move up and down synchronously when the two adjusting rods 23 are rotated, thereby causing the two limiting sliding sleeves 25 to move in opposite directions synchronously, which in turn drives the corresponding sampling cylinder 210 to change position. Therefore, when the entire device is inserted into the pit for multi-layer sampling, sampling can be performed according to different point requirements, which is very convenient to use and more convenient for practical use.

[0040] Furthermore, the number of limiting plates 21 is set to two, and the outer walls of both limiting plates 21 are provided with through-grooves 212. The limiting sleeve 25 is slidably installed inside the groove 212. The purpose of this setting is to allow the limiting sleeve 25 to slide stably in the inner cavity of the groove 212 for displacement adjustment when adjusting the distance between the two connecting sleeves 24, making the overall adjustment of the sampling point smoother. Further, refer to Figure 4 As shown, a gear ring 26 is fixedly installed on the top of the adjusting rod 23, and an adjusting plate 104 is rotatably installed on the top of the supporting base frame 101. An arc-shaped gear plate 105 that meshes with the adjusting plate 104 is fixedly installed on the outer wall of the adjusting plate 104. The purpose of this arrangement is that when the supporting base frame 101 is driven to insert the corresponding sampling cylinder 210 into the pit, the adjusting plate 104 can be rotated to deflect the corresponding gear ring 26, thereby causing the adjusting rod 23 to rotate, which in turn changes the distance between the two connecting sleeves 24 and the limiting sliding sleeve 25.

[0041] Furthermore, multiple limiting strips 28 are fixedly installed on the outer wall of the positioning push rod 27. A first telescopic spring 29 is fixedly installed between the limiting strips 28 and the limiting sleeve 25. Multiple positioning grooves 213 are fixedly installed on the inner wall of the limiting sleeve 25. The multiple limiting strips 28 are slidably installed in the inner cavity of the corresponding positioning grooves 213. The purpose of this setting is to ensure that when the positioning push rod 27 moves the sampling cylinder 210 to the inner wall of the pit, the limiting strips 28 combined with the bidirectional limiting of the positioning grooves 213 ensure that the positioning push rod 27 and the sampling cylinder 210 can only perform horizontal linear translational movement. This avoids the sampling cylinder 210 from shifting or tilting during the sampling process, which would affect the accuracy of soil sampling in the positioning area.

[0042] As a further expansion of this plan, refer to Figure 4-5 As shown, a limiting positioning seat 102 is fixedly installed at the bottom of the supporting base frame 101. The limiting positioning seat 102 has a polygonal limiting groove 103 inside, combined with... Figure 5 and Figure 2 As shown, the pressing mechanism 3 includes a rotating rod 31 disposed on the top of the supporting base frame 101. A threaded rod 32 is fixedly connected to the bottom of the rotating rod 31. A pressing block 33 is fixedly connected to the bottom of the threaded rod 32. A polygonal positioning block 34 is rotatably mounted on the bottom of the pressing block 33. The polygonal positioning block 34 is inserted into the inner cavity of the polygonal limiting groove 103. The purpose of this arrangement is that after the supporting base frame 101 is placed into the sampling pit as a whole, the pressing mechanism 3 is placed into the inner cavity of the supporting base frame 101 as a whole, so that the polygonal positioning block 34 is inserted into the inner cavity of the polygonal limiting groove 103, thus completing the limiting connection between the pressing block 33 and the supporting base frame 101. The pressing block 33 is elliptical in shape. The purpose of this arrangement is that when the pressing block 33 is rotated as a whole, the outer wall of the pressing block 33 can sequentially press against one side of the positioning push rod 27, thereby causing the multiple sampling cylinders 210 to be forcefully inserted into the side wall of the sampling pit.

[0043] Synchronous, reference Figure 2 and Figure 7 As shown, the soil loosening mechanism 4 includes a threaded sleeve 41 threaded to the outer wall of the threaded rod 32. Two sliding rods 42 are fixedly installed on the outer wall of the threaded sleeve 41. A first pressure plate 43 is fixedly installed on the outer wall of each sliding rod 42. Multiple second pressure plates 44 are fixedly installed in a ring-shaped manner on the outer wall of the first pressure plate 43 at equal intervals. By rotating the rotating rod 31 as a whole, the extrusion block 33 simultaneously extrudes the positioning push rod 27 and the sampling cylinder 210. At the same time, the threaded sleeve 41 moves downward on the outer wall of the threaded rod 32, causing the first pressure plate 43 to drive the multiple second pressure plates 44 to move downward synchronously until the multiple second pressure plates 44 are driven into the soil around the sampling pit from top to bottom, and the multiple second pressure plates 44 come into contact with the side wall of the sampling cylinder 210, thus pressing the sampling cylinder 210 into the soil. The soil in contact with the outer perimeter of the sampling pit is loosened to expand the outer circumference diameter of the sampling pit and prevent the sampling cylinder 210 from getting stuck inside the side wall of the sampling pit. This allows for the rapid and simultaneous removal of multiple sampling cylinders 210. At the same time, limit frames 46 are slidably installed on the outer walls of both sliding rods 42. A connecting rod 45 that is fixedly connected to the supporting base frame 101 is fixedly installed on one side of the limit frame 46. A second telescopic spring 47 is fixedly installed between the first pressure plate 43 and the supporting base frame 101. The purpose of this arrangement is to limit the sliding rod 42 with the limit frame 46, so that when the threaded rod 32 is rotated as a whole, the threaded sleeve 41 will not rotate synchronously with it. This makes the sliding rod 42 move up and down with the threaded sleeve 41 more stable and smooth, and easier to use in practice.

[0044] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0045] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0046] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 for soil testing and sampling, comprising a positioning mechanism (1), wherein a plurality of sampling mechanisms (2) are provided on the outer wall of the positioning mechanism (1). Its features are: The positioning mechanism (1) includes a supporting base frame (101), and the sampling mechanism (2) includes a limiting plate (21) fixedly installed on the outer wall of the supporting base frame (101). A balance ring (211) is fixedly installed on the horizontal center line of the limiting plate (21). A balance block (22) is fixedly installed on the outer wall of the balance ring (211). Adjusting rods (23) are rotatably installed on both sides of the balance block (22). Threaded grooves are opened on the outer walls of the two adjusting rods (23). Connecting sleeves (24) are provided on the outer walls of the two adjusting rods (23). A limiting sliding sleeve (25) is fixedly installed on one side of the connecting sleeve (24). A positioning push rod (27) arranged horizontally is slidably installed inside the limiting sliding sleeve (25). A sampling cylinder (210) is fixedly connected to one end of the positioning push rod (27) extending out of the outer wall of the supporting base frame (101). The top of the positioning mechanism (1) is provided with a pressing mechanism (3), and the outer wall of the pressing mechanism (3) is provided with a soil loosening mechanism (4). The pressing mechanism (3) includes a rotating rod (31) set on the top of the supporting base frame (101). A threaded rod (32) is fixedly connected to the bottom of the rotating rod (31). A pressing block (33) is fixedly connected to the bottom of the threaded rod (32). A polygonal positioning block (34) is rotatably installed on the bottom of the pressing block (33). The polygonal positioning block (34) is inserted into the inner cavity of the polygonal limiting groove (103). The pressing block (33) is elliptical.

2. The stratified sampling device for soil testing and sampling according to claim 1, characterized in that: The threaded grooves on the outer walls of the two adjusting rods (23) are arranged in opposite directions. The connecting sleeve (24) is threaded onto the outer wall of the adjusting rod (23), and the two connecting sleeves (24) are symmetrically arranged about the horizontal center line of the balance block (22).

3. A stratified sampling device for soil testing and sampling according to claim 2, characterized in that: The number of the limiting plates (21) is set to two, and the outer walls of the two limiting plates (21) are provided with sliding grooves (212) arranged in a through shape. The limiting type sliding sleeve (25) is slidably installed inside the sliding groove (212).

4. A stratified sampling device for soil testing and sampling according to claim 3, characterized in that: A gear ring (26) is fixedly installed on the top of the adjusting rod (23), and an adjusting plate (104) is rotatably installed on the top of the supporting base frame (101). An arc-shaped gear plate (105) that meshes with the adjusting plate (104) is fixedly installed on the outer wall of the adjusting plate (104).

5. A stratified sampling device for soil testing and sampling according to claim 4, characterized in that: Multiple limiting strips (28) are fixedly installed on the outer wall of the positioning push rod (27). A first telescopic spring (29) is fixedly installed between the limiting strip (28) and the limiting sleeve (25). Multiple positioning grooves (213) are fixedly installed on the inner wall of the limiting sleeve (25). Multiple limiting strips (28) are slidably installed in the inner cavity of the corresponding positioning grooves (213).

6. A stratified sampling device for soil testing and sampling according to claim 5, characterized in that: The bottom of the supporting base frame (101) is fixedly installed with a limiting positioning seat (102), and the limiting positioning seat (102) has a polygonal limiting groove (103) inside.

7. A stratified sampling device for soil testing and sampling according to claim 6, characterized in that: The soil loosening mechanism (4) includes a threaded sleeve (41) threaded to the outer wall of the threaded rod (32). Two slide rods (42) are fixedly installed on the outer wall of the threaded sleeve (41). A first pressure plate (43) is fixedly installed on the outer wall of each slide rod (42). Multiple second pressure plates (44) are fixedly installed on the outer wall of the first pressure plate (43) in a ring-shaped manner at equal intervals. Limiting frames (46) are slidably installed on the outer walls of both sliding rods (42). A connecting rod (45) that is fixedly connected to the supporting bottom frame (101) is fixedly installed on one side of the limiting frame (46). A second telescopic spring (47) is fixedly installed between the first pressure plate (43) and the supporting bottom frame (101).

Images