Sampling device for deep soil of paddy field
By designing a two-half cylindrical structure and a soil column cutting component, the problem of deep soil sampling in paddy fields was solved, enabling efficient and convenient soil sample acquisition and ensuring the integrity of the samples and the reliability of the sampling device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI GEOLOGICAL SURVEY INST
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-12
AI Technical Summary
Existing technologies are difficult to use efficiently and conveniently to sample deep soil in paddy fields, especially due to the high soil moisture content and poor viscosity, which leads to low sample integrity and sampling efficiency. In addition, existing devices are complex in structure and expensive.
采用两半式筒体结构的水田深层土壤取样装置，包括筒体和土柱切断件，通过锁合结构连接的半筒体形成取样孔，利用切断铲切断土柱，并通过溢水口排出多余水分，结合管壁刮刀器和搅拌棒保证样品完整性和均一性。
It enables efficient and rapid extraction of soil column samples, ensuring sample integrity and sampling device reliability, reducing manufacturing and usage costs, and improving sampling efficiency and accuracy.
Smart Images
Figure CN224231305U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of soil sampling device technology, and in particular to a sampling device for deep soil in paddy fields. Background Technology
[0002] Paddy fields refer to land within cities, towns, villages, and independent industrial and mining areas that is constructed with embankments (ridges) to regularly retain water and is used for growing aquatic crops such as rice. Paddy field soil is a special soil type formed under long-term flooding conditions, possessing unique physical, chemical, and biological characteristics. It has a high microbial content and, unlike dryland soils, exhibits unique redox processes that influence nutrient cycling and microbial-mediated soil organic matter (SOM) turnover. Studying the mechanisms of organic matter formation and preservation in paddy field soils is of significant value for improving the efficiency of farmland soil organic carbon pool management and optimizing the agricultural ecological environment. In this field, collecting paddy field soil samples is a fundamental step in research, especially deep soil sampling during the irrigation period, which can provide crucial data support for revealing the unique properties of paddy field soils.
[0003] Paddy field soil is typically muddy with high water content. Currently, the common method for sampling paddy field soil is manual digging with a shovel. This process is time-consuming and labor-intensive, and the soil extracted by shovel is very moist, requiring draining before being placed in resealable bags. This is insufficient for large sample volumes, especially for sampling deep soil layers. Traditional soil samplers, usually consisting of a metal tube and handle, are designed to obtain samples by inserting them into the soil. They are primarily designed for dryland soils and are ill-suited to the muddy soil environment of paddy fields, which has high water content and poor adhesion. Furthermore, some improved sampling tools, such as sampling tubes with sealing devices or samplers with helical propulsion structures, can improve sampling efficiency to some extent, but their complex structures and high costs still cannot effectively and conveniently handle sampling deep paddy field soils, posing certain inconveniences and difficulties for paddy soil research.
[0004] The applicant previously developed a device specifically for sampling deep soil in paddy fields during the irrigation season. This device includes a cylinder, a soil column cutter, and a bulldozer. In use, the entire cylinder is first vertically pressed downwards into the deep soil of the paddy field during the irrigation season, forming a soil column inside the cylinder. Then, the cutter is inserted near the lower end of the cylinder to cut the soil column inside, separating the soil column in the sampling hole from the soil below. Finally, the cylinder is pulled out of the soil and moved to a predetermined location. The bulldozer is then pushed into the cylinder from the top, and a piston at the end of the bulldozer pushes the soil column out of the cylinder. This process requires inserting the bulldozer into the cylinder, which can deform the soil column and makes it difficult to ensure the cleanliness of the inner wall of the cylinder after each sampling. Furthermore, it is inconvenient to use. Utility Model Content
[0005] To further improve the convenience and reliability of deep soil sampling in paddy fields, this application provides a sampling device for deep soil in paddy fields.
[0006] The sampling device for deep soil in paddy fields provided in this application adopts the following technical solution:
[0007] A sampling device for deep soil in paddy fields includes a cylinder and a soil column cutting component, wherein the cylinder has sampling holes extending through both ends along its axial direction.
[0008] The cylinder includes a first half-cylinder and a second half-cylinder, with one side of the first half-cylinder hinged to one side of the second half-cylinder; the other side of the first half-cylinder and the other side of the second half-cylinder are detachably connected by a locking structure; the first half-cylinder and the second half-cylinder are fastened together to form the cylinder and the sampling hole.
[0009] The first or second half-cylinder has an insertion channel on one side, and the soil column cutting component includes a connecting rod and a cutting shovel fixed to the end of the connecting rod; the cutting shovel can pass through the insertion channel and be inserted into the sampling hole to cut the soil column in the sampling hole.
[0010] Before use, the first and second halves of the cylinder are interlocked and fixed together using a locking structure to form a complete cylinder. During use, the entire cylinder is pressed vertically downwards into the deep soil of the paddy field to an appropriate depth as needed. Then, the soil column cutter is inserted into the cylinder's insertion channel, with its cutting blade extending into the sampling hole near the lower end of the cylinder to cut the soil column inside. This disconnects the soil column from the soil below, and the cutting blade supports the soil column within the sampling hole. After the cylinder is pulled out of the soil and moved to the designated position, the entire soil column cutter is removed. Then, the locking structure is opened, allowing the first and second halves of the cylinder to swing open, making it easy and quick to remove the soil column.
[0011] By adopting the above technical solution, the cutting shovel of the soil column cutting component can not only cut or separate soil columns at different depths during sampling, but also effectively prevent the soil column from falling when lifting the sampling device; through the two-half cylindrical structure, the soil column sample inside the cylinder can be taken out conveniently, efficiently and quickly, while ensuring its integrity and the cleanliness of the inner wall of the cylinder. The whole device has a simple structure, low manufacturing and use costs, and is convenient and reliable to use.
[0012] Optionally, one side of the first half-cylinder and one side of the second half-cylinder are hinged together by a hinge; a first handle is fixedly provided at the upper end of the first half-cylinder and a second handle is fixedly provided at the upper end of the second half-cylinder. When the first half-cylinder and the second half-cylinder are engaged, the first handle and the second handle are symmetrically arranged about the central axis of the sampling hole.
[0013] By adopting the above technical solution, the first and second handles facilitate both opening and closing the cylinder and inserting the entire cylinder into the deep soil of the paddy field, making the operation simple and efficient.
[0014] Optionally, the first half-cylinder has a first stepped surface on one side of the locking structure, and the second half-cylinder has a second stepped surface on one side of the locking structure; when the first half-cylinder and the second half-cylinder are in contact, the first stepped surface and the second stepped surface are in contact.
[0015] By adopting the above technical solution, when the first half-cylinder and the second half-cylinder are interlocked, a limiting structure can be formed, thereby ensuring the accuracy, stability and reliability of the interlocking, and thus ensuring the consistency of the shape of the sampled soil column and preventing misalignment and leakage.
[0016] Optionally, a sealing gasket may be attached to the first step surface and / or the second step surface.
[0017] By adopting the above technical solution, the sealing performance and stability of the connection between the first and second half-cylinders are further improved.
[0018] Optionally, the sampling device further includes a pipe wall scraper for scraping and cleaning the inner walls of the first half-cylinder and the second half-cylinder, and a soil column shovel for completely scraping and transferring the entire soil column from the first half-cylinder or the second half-cylinder; the pipe wall scraper includes a first handle and a scraper blade fixed to one end of the first handle; the end of the scraper blade away from the first handle is arc-shaped to match the inner walls of the first half-cylinder and the second half-cylinder; the soil column shovel includes a second handle and a thin blade with an arc-shaped surface; the shape of the thin blade matches the inner walls of the first half-cylinder and the second half-cylinder; the second handle is a curved arc-shaped rod and the two ends of the second handle are respectively fixed to the two ends of the thin blade on the same side.
[0019] By adopting the above technical solution, a complete soil column can be easily and quickly removed using a soil column shovel, and the inner walls of the first and second half-cylinders can be scraped and cleaned using a pipe wall scraper, enabling multiple reuses.
[0020] Optionally, the locking structure includes a mounting plate fixed to the outer side of the first half-cylinder and a mounting seat fixed to the outer side of the second half-cylinder. The mounting plate and the mounting seat are arranged opposite to each other, and the end of the mounting plate facing the mounting seat is wound outward to form a hook. The mounting seat is provided with a swing arm that can swing, and a pull ring that can be hooked onto the hook is movably connected to the swing arm.
[0021] By adopting the above technical solution, when the first half-tube and the second half-tube are engaged, the pull ring can be easily and quickly hooked onto the hook by swinging the swing arm, thereby achieving the connection and fixation of the first half-tube and the second half-tube.
[0022] Optionally, as another solution, the locking structure includes a first fixing plate fixed to the outer side of the first half-cylinder and a second fixing plate fixed to the outer side of the second half-cylinder; one end of the first fixing plate extends outward toward the second fixing plate and a locking ring is fixed to the outer side of that end of the first fixing plate; a sleeve is fixed to one side of the second fixing plate, a pin is inserted into the sleeve and one end of the pin can be inserted into the locking ring.
[0023] By adopting the above technical solution, when the first half-cylinder and the second half-cylinder are engaged, the first fixing plate moves toward the second fixing plate until the locking ring is directly below the sleeve. The pin is then moved so that it is inserted into the locking ring, thereby conveniently and quickly achieving a stable and reliable limiting connection between the first half-cylinder and the second half-cylinder.
[0024] Optionally, an overflow port communicating with the sampling hole is provided on the upper end or the side wall near the upper end of the first half-cylinder.
[0025] An additional layer is provided on the outer side of the second half-cylinder along the length direction of the second half-cylinder. The additional layer has an arc-shaped structure. There is a gap between the middle part of the additional layer in the width direction and the outer side of the second half-cylinder. The two sides of the additional layer are fixed to the outer side of the second half-cylinder. The insertion channel is formed between the additional layer and the outer side of the cylinder.
[0026] The lower end or near the lower end of the second half-cylinder is provided with an inclined downward guide groove, the guide groove is connected to the sampling hole and the upper end of the guide groove is connected to the bottom of the insertion channel.
[0027] By adopting the above technical solution, water entering the cylinder can be discharged through the overflow port, reducing the need for a dedicated draining process and making it more convenient and efficient. The insertion channel formed by the additional layer and the outer side of the second half-cylinder provides a precise guiding path for the soil column cutting component, avoiding deviation during insertion and ensuring that the cutting shovel can accurately enter the sampling hole to complete the soil column cutting. By optimizing the insertion path of the soil column cutting component, sampling efficiency and accuracy are improved. The downward-sloping guide slot design in this application further optimizes the insertion angle of the cutting shovel, allowing it to smoothly transition from the insertion channel into the sampling hole, improving the smoothness of the sampling operation.
[0028] Optionally, the connecting rod of the soil column cutter is in the shape of an arc plate, the cutting shovel of the soil column cutter is made of a flexible metal sheet and the cutting shovel is integrally formed with the connecting rod; a blocking and limiting member is provided at the end of the connecting rod away from the cutting shovel; the side of the cutting shovel away from the connecting rod matches the shape of the inner wall of the sampling hole.
[0029] By adopting the above technical solution, the arc-shaped connecting rod can better adapt to the shape of the insertion channel, making the soil column cutter smoother when inserted into the insertion channel. The cutting shovel made of flexible metal sheet not only has sufficient strength to cut the soil column, but also has a certain degree of flexibility, which can be bent at the bottom of the insertion channel to be inserted into the sampling hole, ensuring the accuracy of the soil column cutting action.
[0030] Optionally, the sampling device further includes a stirring rod, which includes a stirring arm, a third handle fixed to one end of the stirring arm, and a stirring blade located on the outer circumferential surface of the stirring arm. The stirring blade is spirally wound around the stirring arm in the circumferential direction.
[0031] By adopting the above technical solution, the sampler can be inserted into the paddy field soil without stratification, and the soil can be mixed by using a stirring rod to ensure the homogeneity of the sample.
[0032] In summary, this application includes at least one of the following beneficial technical effects:
[0033] 1. In this application, by setting a first half-cylinder and a second half-cylinder to form a two-part cylindrical structure, it is possible to conveniently, efficiently and quickly extract soil column samples from inside the cylinder, ensuring the integrity of the soil column samples; and it is also convenient to clean the inner wall of the cylinder.
[0034] 2. The sampling device in this application has a simple structure, low manufacturing and usage costs, and is convenient and reliable to use.
[0035] 3. By setting an overflow outlet, excess water can be effectively drained during the sampling process, avoiding the problem of soil sample shape damage or difficulty in extraction due to excessive water content, thus improving sampling efficiency and sample integrity; at the same time, it reduces the need for a dedicated draining process and improves operational efficiency.
[0036] 4. The cutting shovel of the soil column cutting component in this application can not only cut and separate the soil column during sampling, but also effectively prevent the soil column inside the cylinder from falling when the cylinder is lifted, thus ensuring the accuracy and reliability of sampling. Attached Figure Description
[0037] Figure 1 This is a three-dimensional structural diagram of the cylinder and soil column cutting component in Embodiment 1 of this application.
[0038] Figure 2This is a schematic diagram of the exploded structure of the cylinder in this application.
[0039] Figure 3 This is a three-dimensional structural diagram of the pipe wall scraper in this application.
[0040] Figure 4 This is a three-dimensional structural diagram of the earth pillar shovel in this application.
[0041] Figure 5 This is a three-dimensional structural diagram of the stirring rod in this application.
[0042] Figure 6 This is a three-dimensional structural diagram of the locking structure in Embodiment 1 of this application.
[0043] Figure 7 This is a three-dimensional structural schematic diagram of the soil column cutting component in Embodiment 2 of this application.
[0044] Figure 8 This is a three-dimensional structural diagram of the locking structure in Embodiment 3 of this application.
[0045] In the picture:
[0046] 10. Cylinder body; 11. Sampling hole; 12. First half-cylinder; 121. Overflow outlet; 122. First stepped surface; 13. Second half-cylinder; 131. Insertion channel; 132. Guide slot; 133. Second stepped surface; 14. Additional layer; 15. First handle; 16. Second handle; 17. Sealing gasket;
[0047] 20. Soil column cutting component; 21. Connecting rod; 22. Cutting shovel; 23. Blocking and limiting component; 24. Fourth handle;
[0048] 30. Pipe wall scraper; 31. First handle; 32. Scraper blade;
[0049] 40. Stirring rod; 41. Stirring handle; 42. Stirring disc; 43. Third handle;
[0050] 50. Hinge;
[0051] 60. Locking structure; 61. Mounting plate; 611. Hook; 62. Mounting base; 63. Swing arm; 64. Pull ring; 65. First fixing plate; 651. Locking ring; 66. Second fixing plate; 661. Sleeve; 67. Pin;
[0052] 70. Earth pillar shovel; 71. Second handle; 72. Thin blade. Detailed Implementation
[0053] The following will be combined with the appendix Figure 1 -Appendix Figure 8The technical solutions in the embodiments of this utility model are clearly and completely described herein. The described embodiments are only possible technical implementations of this utility model and not all possible implementations. Those skilled in the art can obtain other embodiments in conjunction with the embodiments of this utility model without creative effort, and these embodiments are also within the protection scope of this utility model.
[0054] Due to the high water content and soft, sticky texture of paddy field soils, traditional tools are prone to excessive water entering the sampler during sampling, affecting sample integrity and representativeness, requiring a special draining process, and impacting sampling efficiency. Furthermore, when extracting deep soil samples, samples are easily broken or dropped due to uneven stress, making it difficult to ensure accurate sampling depth. These problems not only increase the difficulty of sampling but may also adversely affect the reliability of subsequent research results. Therefore, this application provides a novel sampling device for sampling deep paddy field soils.
[0055] Example 1
[0056] Reference Figure 1 and Figure 2 As shown, this embodiment discloses a sampling device for deep paddy field soil, including a cylinder 10 and a soil column cutter 20. The cylinder 10 is cylindrical and is placed vertically during use. In this embodiment, the orientation of each component is defined based on the orientation of the sampling device during use. The cylinder 10 has sampling holes 11 extending through its upper and lower ends along its axial direction. The cylinder 10 in this embodiment includes a first half-cylinder 12 and a second half-cylinder 13, both of which have semi-circular cross-sections. One side of the first half-cylinder 12 and one side of the second half-cylinder 13 are hinged together by multiple hinges 50. In this embodiment, three hinges 50 spaced vertically can be used to connect the first half-cylinder 12 and the second half-cylinder 13. The other side of the first half-cylinder 12 and the other side of the second half-cylinder 13 are detachably connected by a locking structure 60. The first half-cylinder 12 and the second half-cylinder 13 are interlocked to form a complete cylinder 10 and sampling holes 11.
[0057] Reference Figure 1 and Figure 2 As shown, a first handle 15 is fixed to the upper end of the first half-cylinder 12, and a second handle 16 is fixed to the upper end of the second half-cylinder 13. When the first half-cylinder 12 and the second half-cylinder 13 are engaged, the first handle 15 and the second handle 16 are symmetrically arranged about the central axis of the sampling hole 11. The first handle 15 and the second handle 16 facilitate the opening and closing of the cylinder 10 and make it easy to insert the entire cylinder 10 into the deep soil of the paddy field. The operation is simple and efficient.
[0058] Reference Figure 1 and Figure 2As shown, one side of the first half-cylinder 12 or the second half-cylinder 13 has an insertion channel 131. The soil column cutting component 20 includes a connecting rod 21 and a cutting shovel 22 fixed to the end of the connecting rod 21. The connecting rod 21 of the soil column cutting component 20 is arc-shaped, and the cutting shovel 22 of the soil column cutting component 20 is made of a flexible metal sheet and is integrally formed with the connecting rod 21. A blocking and limiting component 23 is provided at the end of the connecting rod 21 away from the cutting shovel 22. The side of the cutting shovel 22 away from the connecting rod 21 matches the shape of the inner wall of the sampling hole 11. The cutting shovel 22 can pass through the insertion channel 131 and be inserted into the sampling hole 11 to cut the soil column in the sampling hole 11. In this embodiment, an overflow port 121 communicating with the sampling hole 11 is opened on the side wall at the upper end or near the upper end of the first half-cylinder 12, and an insertion channel 131 is provided on the outer side of the second half-cylinder 13 as an example. Specifically, the overflow port 121 is composed of a plurality of arrayed small holes formed on the side wall of the first half-cylinder 12. An additional layer 14 is provided on the outer side of the second half-cylinder 13 along the length direction of the second half-cylinder 13. The additional layer 14 has an arc-shaped structure. There is a gap between the middle part of the additional layer 14 in the width direction and the outer side of the second half-cylinder 13. The two sides of the additional layer 14 are fixed to the outer side of the second half-cylinder 13. The lower end of the additional layer 14 is also fixed to the outer side of the second half-cylinder 13. The inner wall of the lower end of the additional layer 14 is inclined. An insertion channel 131 is formed between the additional layer 14 and the outer side of the cylinder 10. An inclined downward guide groove 132 is provided at the lower end or near the lower end of the second half-cylinder 13. The guide groove 132 is connected to the sampling hole 11 and the upper end of the guide groove 132 is connected to the bottom of the insertion channel 131. The lower side wall of the guide groove 132 is flush with the bottom surface of the insertion channel 131 and smoothly connected. The insertion channel 131 formed by the additional layer 14 and the outer side of the second half-cylinder 13 provides a precise guide path for the soil column cutter 20, avoiding deviation during insertion and ensuring that the cutting shovel 22 can accurately enter the sampling hole 11 to complete the soil column cutting. By optimizing the insertion path of the soil column cutter 20, sampling efficiency and accuracy are improved. The downward-sloping guide slot 132 design in this application further optimizes the insertion angle of the cutting shovel 22, allowing the cutting shovel 22 to smoothly transition from the insertion channel 131 into the sampling hole 11, improving the smoothness of the sampling operation. The arc-shaped connecting rod 21 can better adapt to the shape of the insertion channel 131, making the soil column cutter 20 more smoothly inserted into the insertion channel 131. The cutting shovel 22, made of flexible metal sheet, not only has sufficient strength to cut the soil column, but also has a certain degree of flexibility, which can be bent at the bottom of the insertion channel 131 to insert into the sampling hole 11, ensuring the accuracy of the soil column cutting action.
[0059] Reference Figure 2As shown, the first half-cylinder 12 has a first stepped surface 122 on one side of the locking structure 60, and the second half-cylinder 13 has a second stepped surface 133 on one side of the locking structure 60. When the first half-cylinder 12 and the second half-cylinder 13 are connected, the first stepped surface 122 and the second stepped surface 133 are in contact, and sealing gaskets 17 are attached to the first stepped surface 122 and the second stepped surface 133. When the first half-cylinder 12 and the second half-cylinder 13 are engaged, the first stepped surface 122 and the second stepped surface 133 can form a limiting structure, thereby ensuring the accuracy, stability and reliability of the engagement, and thus ensuring the consistency of the shape of the sampled soil column and preventing misalignment and leakage.
[0060] Reference Figure 3 and Figure 4 As shown, the sampling device in this embodiment also includes a pipe wall scraper 30 for scraping and cleaning the inner walls of the first half-cylinder 12 and the second half-cylinder 13, and a soil column shovel 70 for completely scraping and transferring the entire soil column from the first half-cylinder 12 or the second half-cylinder 13; the pipe wall scraper 30 includes a first handle 31 and a scraper 32 fixed to one end of the first handle 31; the end of the scraper 32 away from the first handle 31 is in an arc shape that matches the inner walls of the first half-cylinder 12 and the second half-cylinder 13. The soil column shovel 70 includes a second handle 71 and a thin, curved blade 72. The shape of the thin blade 72 matches the inner walls of the first half-cylinder 12 and the second half-cylinder 13. The second handle 71 is a curved rod, and its two ends are respectively fixed to the two ends of the thin blade 72 on the same side. The soil column shovel 70 can be used to easily and quickly remove a complete soil column, and the pipe wall scraper 30 can be used to scrape and clean the inner walls of the first half-cylinder 12 and the second half-cylinder 13, enabling it to be reused multiple times and avoiding mutual interference from multiple sampling.
[0061] Reference Figure 5 As shown, the sampling device in this embodiment also includes a stirring rod 40. The stirring rod 40 includes a stirring bar 41, a third handle 43 fixed to one end of the stirring bar 41, and a stirring plate 42 located on the outer circumferential surface of the stirring bar 41. The stirring plate 42 is spirally wound around the stirring bar 41. In the case of sampling without stratification, the sampler is inserted into the paddy field soil, and the stirring rod 40 is used to mix the soil to ensure the uniformity of the sample.
[0062] Reference Figure 1 and Figure 6As shown, the locking structure 60 in this embodiment includes a mounting plate 61 fixed to the outer side of the first half-cylinder 12 and a mounting seat 62 fixed to the outer side of the second half-cylinder 13. The mounting plate 61 and the mounting seat 62 are arranged opposite to each other, and the end of the mounting plate 61 facing the mounting seat 62 is wound outward to form a hook 611. The mounting seat 62 is provided with a swing arm 63 that can swing, and a pull ring 64 that can be hooked onto the hook 611 is movably connected to the swing arm 63. When the first half-cylinder 12 and the second half-cylinder 13 are engaged, the pull ring 64 can be easily and quickly hooked onto the hook 611 by swinging the swing arm 63, thereby realizing the connection and fixation of the first half-cylinder 12 and the second half-cylinder 13.
[0063] In this application, the first half-cylinder 12 and the second half-cylinder 13 can be made of stainless steel, and the stirring rod 41 and the stirring blade 42 can be made of stainless steel or plastic; the first handle 15, the second handle 16, and the third handle 43 can be made of metal or plastic, which can effectively improve the durability and ease of operation of the sampling device.
[0064] The implementation principle is as follows: Before use, the first half-cylinder 12 and the second half-cylinder 13 are interlocked and fixed by the locking structure 60 to form a complete cylinder 10. When in use, the entire cylinder 10 is pressed vertically downward into the deep soil of the paddy field to an appropriate depth as needed. Then, the soil column cutter 20 is inserted into the insertion channel 131 of the cylinder 10. The cutting shovel 22 of the soil column cutter 20 extends into the sampling hole 11 near the lower end of the cylinder 10, cutting the soil column in the sampling hole 11, so that the soil column in the sampling hole 11 is separated from the soil below. The cutting shovel 22 can support the soil column in the sampling hole 11. After the cylinder 10 is pulled out of the soil and moved to the predetermined position, the entire soil column cutter 20 is pulled out. Then, the locking structure 60 is opened, so that the first half-cylinder 12 and the second half-cylinder 13 can be swinged open, and the soil column can be easily and quickly removed. Without stratifying the sample, insert the cylinder 10 into the paddy field soil and use the stirring rod 40 to mix the soil to ensure the uniformity of the sample.
[0065] In this embodiment, the cutting shovel 22 of the soil column cutting component 20 can not only cut or separate soil columns at different depths during sampling, but also effectively prevent the soil column from falling when the sampling device is lifted. Through the two-half cylinder 10 structure, the soil column sample inside the cylinder 10 can be taken out conveniently, efficiently and quickly, and its integrity can be guaranteed. The whole device has a simple structure, low manufacturing and use costs, and is convenient and reliable to use.
[0066] In this application, the water entering the cylinder 10 is discharged through the overflow port 121, reducing the need for a dedicated draining process and making it more convenient and efficient.
[0067] Example 2
[0068] Reference Figure 7As shown, this embodiment is largely the same as Embodiment 1, except that the connecting rod 21 of the soil column cutter 20 is round, one side of the cutting shovel 22 of the soil column cutter 20 is hinged to the connecting rod 21, and the other side of the cutting shovel 22 matches the shape of the inner wall of the sampling hole 11; a fourth handle 24 is provided at the end of the connecting rod 21 away from the cutting shovel 22. The cutting shovel 22 is hinged to the connecting rod 21, and under the guidance of the guide slot 132 at the bottom of the insertion channel 131, the cutting shovel 22 can be smoothly inserted into the sampling hole 11 by swinging. The soil column cutter 20 in this application can be made of hard metal, thus having sufficient strength and service life and being not easily damaged.
[0069] Example 3
[0070] Reference Figure 8 As shown, this embodiment is largely the same as Embodiment 1, except that the locking structure 60 in this embodiment includes a first fixing plate 65 fixed to the outer surface of the first half-cylinder 12 and a second fixing plate 66 fixed to the outer surface of the second half-cylinder 13. One end of the first fixing plate 65 extends outward toward the second fixing plate 66, and a locking ring 651 is fixedly provided on the outer side of that end of the first fixing plate 65. A sleeve 661 is fixedly provided on one side of the second fixing plate 66, and a pin 67 is inserted into the sleeve 661, with one end of the pin 67 capable of being inserted into the locking ring 651. When the first half-cylinder 12 and the second half-cylinder 13 are engaged, the first fixing plate 65 moves toward the second fixing plate 66 until the locking ring 651 is directly below the sleeve 661, and the pin 67 is moved so that the pin 67 is inserted into the locking ring 651, thereby conveniently and quickly achieving a limiting connection between the first half-cylinder 12 and the second half-cylinder 13, which is stable and reliable.
[0071] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.
Claims
1. A sampling device for deep soil in paddy fields, the sampling device comprising a cylinder (10) and a soil column cutter (20), wherein the cylinder (10) has sampling holes (11) extending through both ends along its axial direction; Its features are, The cylinder (10) includes a first half-cylinder (12) and a second half-cylinder (13). One side of the first half-cylinder (12) is hinged to one side of the second half-cylinder (13). The other side of the first half-cylinder (12) and the other side of the second half-cylinder (13) are detachably connected by a locking structure (60). The first half-cylinder (12) and the second half-cylinder (13) are fastened together to form the cylinder (10) and the sampling hole (11). One side of the first half-cylinder (12) or the second half-cylinder (13) has an insertion channel (131), and the soil column cutting component (20) includes a connecting rod (21) and a cutting shovel (22) fixed to the end of the connecting rod (21); the cutting shovel (22) can pass through the insertion channel (131) and be inserted into the sampling hole (11) to cut the soil column in the sampling hole (11).
2. The sampling device for deep soil in paddy fields according to claim 1, characterized in that, One side of the first half-cylinder (12) is hinged to one side of the second half-cylinder (13) by a hinge (50); a first handle (15) is fixedly provided at the upper end of the first half-cylinder (12), and a second handle (16) is fixedly provided at the upper end of the second half-cylinder (13). When the first half-cylinder (12) and the second half-cylinder (13) are engaged, the first handle (15) and the second handle (16) are symmetrically arranged about the central axis of the sampling hole (11).
3. The sampling device for deep soil in paddy fields according to claim 1 or 2, characterized in that, The first half-cylinder (12) has a first step surface (122) on one side of the locking structure (60), and the second half-cylinder (13) has a second step surface (133) on one side of the locking structure (60); when the first half-cylinder (12) and the second half-cylinder (13) are in contact, the first step surface (122) and the second step surface (133) are in contact.
4. The sampling device for deep soil in paddy fields according to claim 3, characterized in that, A sealing gasket (17) is attached to the first step surface (122) and / or the second step surface (133).
5. The sampling device for deep soil in paddy fields according to claim 1 or 2, characterized in that, The sampling device also includes a pipe wall scraper (30) for scraping and cleaning the inner walls of the first half-cylinder (12) and the second half-cylinder (13). And a soil column scraper (70) for scraping and transferring the entire soil column completely from the first half-cylinder (12) or the second half-cylinder (13); the pipe wall scraper (30) includes a first handle (31) and a scraper (32) fixed to one end of the first handle (31); the end of the scraper (32) away from the first handle (31) is arc-shaped to match the inner wall of the first half-cylinder (12) and the second half-cylinder (13); the soil column scraper (70) includes a second handle (71) and a thin blade (72) with an arc-shaped surface; the shape of the thin blade (72) matches the inner wall of the first half-cylinder (12) and the second half-cylinder (13); the second handle (71) is a curved arc rod and the two ends of the second handle (71) are respectively fixed to the two ends of the thin blade (72) on the same side.
6. The sampling device for deep soil in paddy fields according to claim 1 or 2, characterized in that, The locking structure (60) includes a mounting plate (61) fixed to the outer side of the first half-cylinder (12) and a mounting seat (62) fixed to the outer side of the second half-cylinder (13). The mounting plate (61) and the mounting seat (62) are arranged opposite to each other. The end of the mounting plate (61) facing the mounting seat (62) is wound outward to form a hook (611). The mounting seat (62) is provided with a swing arm (63) that can swing. A pull ring (64) that can be hooked on the hook (611) is movably connected to the swing arm (63).
7. The sampling device for deep soil in paddy fields according to claim 1 or 2, characterized in that, The locking structure (60) includes a first fixing plate (65) fixed to the outer side of the first half-cylinder (12) and a second fixing plate (66) fixed to the outer side of the second half-cylinder (13); one end of the first fixing plate (65) extends outward toward the second fixing plate (66) and a locking ring (651) is fixedly provided on the outer side of that end of the first fixing plate (65); a sleeve (661) is fixedly provided on one side of the second fixing plate (66), and a pin (67) is inserted into the sleeve (661) and one end of the pin (67) can be inserted into the locking ring (651).
8. The sampling device for deep soil in paddy fields according to claim 1 or 2, characterized in that, An overflow port (121) communicating with the sampling hole (11) is provided on the upper end or the side wall near the upper end of the first half cylinder (12); An additional layer (14) is provided on the outer side of the second half-cylinder (13) along the length direction of the second half-cylinder (13). The additional layer (14) has an arc-shaped structure. There is a gap between the middle part of the additional layer (14) in the width direction and the outer side of the second half-cylinder (13). The two sides of the additional layer (14) are fixed to the outer side of the second half-cylinder (13). The insertion channel (131) is formed between the additional layer (14) and the outer side of the cylinder (10). The second half-cylinder (13) has a downwardly inclined guide groove (132) at or near the lower end. The guide groove (132) is connected to the sampling hole (11), and the upper end of the guide groove (132) is connected to the bottom of the insertion channel (131).
9. The sampling device for deep soil in paddy fields according to claim 8, characterized in that, The connecting rod (21) of the soil column cutting component (20) is in the shape of an arc plate. The cutting shovel (22) of the soil column cutting component (20) is made of a flexible metal sheet and the cutting shovel (22) is integrally formed with the connecting rod (21). A blocking and limiting component (23) is provided at the end of the connecting rod (21) away from the cutting shovel (22). The side of the cutting shovel (22) away from the connecting rod (21) matches the shape of the inner wall of the sampling hole (11).
10. The sampling device for deep soil in paddy fields according to claim 1 or 2, characterized in that, The sampling device also includes a stirring rod (40), which includes a stirring rod (41), a third handle (43) fixed to one end of the stirring rod (41), and a stirring blade (42) located on the outer circumferential surface of the stirring rod (41). The stirring blade (42) is spirally wound around the stirring rod (41) in the circumferential direction.