A small-sized bottom sediment sampler

Abstract

The utility model relates to the technical field of bottom mud sampling, disclose a small and exquisite bottom mud sampler, including sampling rod, the sampling rod one end is provided with the scraper, the inside of sampling rod is provided with telescopic component, the scraper outer wall is provided with the tool bit, the inside of tool bit is provided with quick -release assembly, quick -release assembly includes limit stop, limit stop outer wall sliding connection in tool bit inner wall, limit stop outer wall fixedly connected with connecting block, the connecting block outer wall fixed connection in the scraper outer wall, tool bit inner wall sliding connection has the clamping block, the inside of tool bit is provided with spring no.

Description

Technical Field

[0001] This utility model relates to the field of sediment sampling technology, and in particular to a compact sediment sampler. Background Technology

[0002] In fields such as environmental monitoring and geological exploration, sediment sampling is a crucial step in obtaining sediment samples from the bottom of water bodies, and it is of great significance for studying pollutant distribution and ecological evolution. With the diversification of sampling scenarios, traditional large-scale sampling equipment, due to its large size and complex operation, is unable to meet the flexible operational needs of small water areas and emergency field sampling. This has spurred the development and application of compact sediment samplers. These samplers, characterized by their portability and ease of operation, are widely used in sampling work in shallow water environments such as rivers, lakes, and ponds. They help researchers and environmentalists quickly obtain sediment samples, providing data support for water quality analysis and ecological assessment.

[0003] Currently, most common compact sediment samplers employ a fixed cutter head and a non-retractable sampling rod design in their mechanical structure and technical principles. The fixed cutter head is typically welded directly to or integrally formed onto the sampling bucket or sampling tube. The shape, angle, and sharpness of the cutter head are determined during manufacturing and cannot be changed subsequently. Its technical principle relies primarily on the physical cutting action of the cutter head; during the sampler's insertion into the sediment, the sediment is cut open and collected into the sampling container using manual labor or simple mechanical assistance. As for the sampling rod, most products use a single-length straight rod structure, such as the common aluminum alloy straight rod, which is fixed to the sampling head using simple connection methods such as threads or clips.

[0004] However, the existing fixed-head design has significant drawbacks. Because the cutting angle and sharpness of the fixed head cannot be adjusted, it cannot match the characteristics of different sediment textures, such as transitioning from silty sediment to hard sediment containing gravel and pebbles. This leads to a sharp increase in insertion resistance. This not only significantly increases the operator's workload and reduces sampling efficiency, but also damages the sampler structure due to excessive force. When the head wears down, its fixed connection to the sampling rod often requires repair or even replacement of the entire sampler, involving complex welding and grinding processes that are time-consuming, labor-intensive, and costly. Therefore, a compact sediment sampler is proposed to address these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a compact sediment sampler, which aims to improve the problem of the inconvenient replacement of the cutter head in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A compact sediment sampler includes a sampling rod, a bucket at one end of the sampling rod, a telescopic assembly inside the sampling rod, a cutter head on the outer wall of the bucket, and a quick-release assembly inside the cutter head.

[0008] The quick-release assembly includes a limiting block, the outer wall of which is slidably connected to the inner wall of the cutter head, a connecting block fixedly connected to the outer wall of the limiting block, the outer wall of the connecting block fixedly connected to the outer wall of the bucket, a locking block slidably connected to the inner wall of the cutter head, and a spring 1 provided inside the cutter head, one end of which is fixedly connected to the inner wall of the cutter head, and the other end of which is fixedly connected to the outer wall of the locking block. The outer wall of the limiting block and the outer wall of the locking block are in contact.

[0009] As a further description of the above technical solution:

[0010] The telescopic assembly includes a telescopic rod, which is slidably connected to the inner wall of the sampling rod, and a rotating wheel is rotatably connected to the inner wall of the telescopic rod.

[0011] As a further description of the above technical solution:

[0012] The inner wall of the telescopic rod is rotatably connected to a second rotating wheel, and a belt is installed inside the telescopic rod. The outer wall of the belt is sleeved on the outer walls of the first rotating wheel and the second rotating wheel.

[0013] As a further description of the above technical solution:

[0014] A fixing block is fixedly connected to the outer wall of the belt, and the top of the fixing block is fixedly connected to the inner wall of the sampling rod.

[0015] As a further description of the above technical solution:

[0016] A fixing plate is fixedly connected to the outer wall of the telescopic rod, and a pressing plate is rotatably connected to the inner wall of the fixing plate;

[0017] As a further description of the above technical solution:

[0018] A second spring is provided on the outer wall of the fixed plate. One end of the second spring is fixedly connected to the outer wall of the pressing plate, and the other end of the second spring is fixedly connected to the outer wall of the telescopic rod.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the pressing plate is fixedly connected to a locking post, and the inner wall of the telescopic rod is slidably connected to a sliding rod. One end of the sliding rod is fixedly connected to the outer wall of the bucket, and a fixing hole is provided inside the sliding rod.

[0021] As a further description of the above technical solution:

[0022] The outer wall of the locking pin is slidably connected to the inner wall of the fixing hole, and the outer wall of the sliding rod is fixedly connected to a fixing block two, the top of the fixing block two being fixedly connected to the outer wall of the belt.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the spring is compressed by the movement of the locking block, and then the locking block releases the limiting block, achieving the effect of quick disassembly of the blade head. This avoids the situation where the cutting angle and sharpness of the fixed blade head do not match the texture of the sediment, which would lead to a sharp increase in insertion resistance, increase the difficulty of operation, and require the entire sampler to be replaced or complex welding and grinding repairs after the fixed blade head is worn. This is time-consuming, labor-intensive, and costly. Therefore, different blade heads can be selected according to the texture of the sediment to reduce insertion resistance and improve sampling efficiency. After the blade head is worn, only the blade head needs to be disassembled and replaced, without the need for overall repair or equipment replacement, thus reducing maintenance costs and time costs.

[0025] 2. In this utility model, the rotating wheel 1 and rotating wheel 2 are moved by the telescopic rod, and then the belt is moved by the rotating wheel 1 and rotating wheel 2, which achieves the effect of telescopic movement of the sampler. This avoids the problems of traditional fixed sampling rods, which require a lot of space to store and cannot be put into a backpack or regular toolbox. They are also prone to damage during transportation, and require holding a long pole when carrying them, which is inconvenient for single-person operation. Furthermore, they can only be used for specific water depths. If the water depth exceeds the length of the rod, sampling is not possible, or a sampling rod of a different length needs to be replaced, which increases the cost of the equipment and the burden of carrying it. This increases the convenience of the sampler and improves its applicability to waters of different depths. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a compact sediment sampler proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the bucket structure of a compact sediment sampler proposed in this utility model;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle

[0029] Figure 4 This is a schematic diagram of the rotating wheel of a compact sediment sampler proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the telescopic rod of a compact sediment sampler proposed in this utility model;

[0031] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0032] Figure 7 This is a schematic diagram of the pressing plate of a compact sediment sampler proposed in this utility model;

[0033] Figure 8 for Figure 7 Enlarged view of point C in the middle;

[0034] Figure 9 This is a schematic diagram of the sliding rod of a compact sediment sampler proposed in this utility model.

[0035] Legend:

[0036] 1. Sampling rod; 2. Bucket; 3. Cutter head; 4. Connecting block; 5. Limiting block; 6. Locking block; 7. Spring 1; 8. Telescopic rod; 9. Rotating wheel 1; 10. Rotating wheel 2; 11. Belt; 12. Fixing block 1; 13. Fixing plate; 14. Pressing plate; 15. Spring 2; 16. Locking post; 17. Sliding rod; 18. Fixing hole; 19. Fixing block 2. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Reference Figures 1-3 This utility model provides an embodiment of a compact sediment sampler, comprising a sampling rod 1, a bucket 2 at one end of the sampling rod 1, a telescopic component inside the sampling rod 1, a cutter head 3 on the outer wall of the bucket 2, and a quick-release component inside the cutter head 3. The quick-release component includes a limiting block 5, the outer wall of the limiting block 5 being slidably connected to the inner wall of the cutter head 3, and a connecting block 4 being fixedly connected to the outer wall of the limiting block 5. The limiting block 5 and the connecting block 4 cooperate to position the cutter head 3, ensuring accurate installation of the cutter head 3. The connecting block 4 is fixedly connected to the outer wall of the bucket 2. The inner wall of the cutter head 3 is slidably connected to the locking block 6. A spring 7 is installed inside the cutter head 3. One end of the spring 7 is fixedly connected to the inner wall of the cutter head 3, and the other end of the spring 7 is fixedly connected to the outer wall of the locking block 6. The outer wall of the limiting block 5 is in contact with the outer wall of the locking block 6. The locking block 6 and the spring 7 cooperate. When the cutter head 3 is installed in place, the spring 7 pushes the locking block 6 to engage with the limiting block 5, realizing the quick installation and fixation of the cutter head 3, and achieving the effect of facilitating quick replacement of the cutter head 3.

[0039] Reference Figure 1 and Figures 4-9The telescopic assembly includes a telescopic rod 8, which is slidably connected to the inner wall of the sampling rod 1. A rotating wheel 9 and a rotating wheel 10 are rotatably connected to the inner wall of the telescopic rod 8. A belt 11 is installed inside the telescopic rod 8, and the outer wall of the belt 11 is fitted over the outer walls of the rotating wheels 9 and 10. The rotating wheels 9 and 10 cooperate with the belt 11, forming a transmission system. When the telescopic rod 8 extends or retracts, it drives the rotating wheels 9 and 10. 9 and rotating wheel 10 rotate, transmitting power through belt 11 to achieve smooth transmission. A fixing block 12 is fixedly connected to the outer wall of belt 11, fixing the position of belt 11 and ensuring stable transmission. The top of fixing block 12 is fixedly connected to the inner wall of sampling rod 1. A fixing plate 13 is fixedly connected to the outer wall of telescopic rod 8. A pressing plate 14 is rotatably connected to the inner wall of fixing plate 13. A spring 15 is provided on the outer wall of fixing plate 13, with one end of spring 15 fixedly connected to the outer wall of pressing plate 14. The other end of spring 15 is fixedly connected to the outer wall of telescopic rod 8. Pressing plate 14 cooperates with spring 15. When not pressed, spring 15 keeps pressing plate 14 in its initial position. A locking post 16 is fixedly connected to the outer wall of pressing plate 14. A sliding rod 17 is slidably connected to the inner wall of telescopic rod 8. One end of sliding rod 17 is fixedly connected to the outer wall of bucket 2. A fixing hole 18 is opened inside sliding rod 17. The outer wall of locking post 16 is slidably connected to the inner wall of fixing hole 18. When pressing plate 14 is pressed, locking post 16 exits from fixing hole 18. When disengaged, the telescopic rod 8 can be freely extended and retracted. When the pressing plate 14 is released, under the action of the second spring 15, the locking post 16 re-engages into the fixing hole 18, thereby fixing the telescopic rod 8 and achieving the effect of quickly adjusting and locking the length of the telescopic rod 8. The outer wall of the sliding rod 17 is fixedly connected to the second fixing block 19. The top of the second fixing block 19 is fixedly connected to the outer wall of the belt 11. The second fixing block 19 connects the sliding rod 17 to the belt 11, so that the belt 11 transmits power to the sliding rod 17 through the second fixing block 19, thereby realizing the linkage of the telescopic components.

[0040] Working principle: When it is necessary to replace the cutter head 3, simply pull the cutter head 3 outward. Pulling the cutter head 3 outward will move the locking block 6, which in turn will compress the spring 7 by pressing the limiting block 5. Then, the locking block 6 will compress the spring 7 to release the limiting block 5, and the cutter head 3 can be removed. When installing the cutter head 3, simply slide the limiting block 5 inside the cutter head 3, and then press the cutter head 3. Pressing the cutter head 3 will move the locking block 6, and then the spring 7 will rebound and move the locking block 6. Then, the locking block 6 will limit the limiting block 5, thus completing the installation of the cutter head 3. This avoids the situation where the cutting angle and sharpness of the fixed cutter head 3 are not matched with the texture of the bottom mud, which will lead to a sharp increase in insertion resistance and increase the difficulty of operation. In addition, if the fixed cutter head 3 is worn, the entire sampler needs to be replaced, or complex welding and grinding repairs need to be performed, which is time-consuming, labor-intensive and costly.

[0041] When extending or retracting the bucket 2, first press the pressing plate 14. Pressing the pressing plate 14 compresses the second spring 15. Then, the movement of the pressing plate 14 moves the locking pin 16. When the locking pin 16 moves out of the fixing hole 18, it releases the limit on the sliding rod 17. Then, pull the telescopic rod 8. Pulling the telescopic rod 8 moves the first rotating wheel 9 and the second rotating wheel 10. Then, the movement of the first rotating wheel 9 and the second rotating wheel 10 moves the belt 11. Then, the position of the belt 11 is fixed by the first fixing block 12. Then, the movement of the belt 11 moves the second fixing block 19. Then, the movement of the second fixing block 19... The motion drives the fixing hole 18 to move. When it moves to the appropriate position, the pressing plate 14 is released. Then, the spring 15 returns the pressing plate 14 to its original position. The resetting of the pressing plate 14 causes the locking post 16 to reset. Subsequently, when the locking post 16 moves into the fixing hole 18, it limits the sliding rod 17. This avoids the problems associated with traditional fixed sampling rods 1, which require a lot of space to store and cannot be put into a backpack or regular toolbox. They are also prone to damage during transportation and require holding a long rod, making it inconvenient for single-person operation. Furthermore, they can only be used in specific water depths. If the water depth exceeds the rod length, sampling is not possible, or a sampling rod 1 of a different length needs to be replaced, increasing equipment costs and carrying burden.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A compact sediment sampler, comprising a sampling rod (1), characterized in that: The sampling rod (1) is provided with a bucket (2) at one end, and a telescopic component is provided inside the sampling rod (1). A cutter head (3) is provided on the outer wall of the bucket (2), and a quick-release component is provided inside the cutter head (3). The quick-release assembly includes a limiting block (5), the outer wall of the limiting block (5) is slidably connected to the inner wall of the cutter head (3), the outer wall of the limiting block (5) is fixedly connected to a connecting block (4), the outer wall of the connecting block (4) is fixedly connected to the outer wall of the bucket (2), the inner wall of the cutter head (3) is slidably connected to a locking block (6), a spring (7) is provided inside the cutter head (3), one end of the spring (7) is fixedly connected to the inner wall of the cutter head (3), the other end of the spring (7) is fixedly connected to the outer wall of the locking block (6), and the outer wall of the limiting block (5) and the outer wall of the locking block (6) are in contact.

2. The compact sediment sampler according to claim 1, characterized in that: The telescopic assembly includes a telescopic rod (8), which is slidably connected to the inner wall of the sampling rod (1), and a rotating wheel (9) is rotatably connected to the inner wall of the telescopic rod (8).

3. A compact sediment sampler according to claim 2, characterized in that: The inner wall of the telescopic rod (8) is rotatably connected to a rotating wheel (10), and a belt (11) is provided inside the telescopic rod (8). The outer wall of the belt (11) is sleeved on the outer wall of the rotating wheel (9) and the rotating wheel (10).

4. A compact sediment sampler according to claim 3, characterized in that: The outer wall of the belt (11) is fixedly connected to a fixing block (12), and the top of the fixing block (12) is fixedly connected to the inner wall of the sampling rod (1).

5. A compact sediment sampler according to claim 4, characterized in that: The telescopic rod (8) is fixedly connected to a fixing plate (13) on its outer wall, and a pressing plate (14) is rotatably connected to the inner wall of the fixing plate (13).

6. A compact sediment sampler according to claim 5, characterized in that: The outer wall of the fixing plate (13) is provided with a second spring (15). One end of the second spring (15) is fixedly connected to the outer wall of the pressing plate (14), and the other end of the second spring (15) is fixedly connected to the outer wall of the telescopic rod (8).

7. A compact sediment sampler according to claim 6, characterized in that: The outer wall of the pressing plate (14) is fixedly connected to a locking post (16), and the inner wall of the telescopic rod (8) is slidably connected to a sliding rod (17). One end of the sliding rod (17) is fixedly connected to the outer wall of the bucket (2), and a fixing hole (18) is provided inside the sliding rod (17).

8. A compact sediment sampler according to claim 7, characterized in that: The outer wall of the locking post (16) is slidably connected to the inner wall of the fixing hole (18), and the outer wall of the sliding rod (17) is fixedly connected to the fixing block two (19), and the top of the fixing block two (19) is fixedly connected to the outer wall of the belt (11).

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