A sludge sampling device

Abstract

This utility model relates to a sludge sampling device, belonging to the field of sludge sampling technology. The sludge sampling device includes: a connecting shaft and two sampling shells hinged to the connecting shaft; the opening and closing mechanism includes a first hinge block disposed inside the sampling shell, two first telescopic rods disposed between the first hinge block and the inner wall of the sampling shell, and two second telescopic rods disposed between the two first telescopic rods; by setting up the opening and closing mechanism in conjunction with a metal hose and a steel cable, the sludge sampling device can flexibly sample under various water depth conditions, without worrying about the limitation of the sampling tube length. Compared with traditional sampling tubes, the steel cable structure is smaller and lighter, greatly reducing the requirements for operator operation and making the sampling process more convenient and safer. Furthermore, the use of the metal hose and steel cable together ensures that the sample is not easily leaked during the sampling process, improving the reliability and accuracy of the sampling.

Description

Technical Field

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

[0002] Sediment sampling is used to obtain representative samples from water bodies or sediments to assess changes in water quality, soil pollution, sediment characteristics, and the ecological environment. Sampling allows for the analysis of pollutant content, nutrient composition, and microbial communities in the sediment, providing a scientific basis for environmental monitoring, pollution control, and resource development. Sediment sampling equipment ensures the accuracy and reliability of the sampling process, avoids external interference, and guarantees the representativeness and comparability of the samples. Using specialized equipment ensures the collection of uniform and valuable samples at different depths and locations, supporting subsequent analysis and decision-making.

[0003] As shown in the reference case "Sludge Sampling Device" announcement number "CN218674364U", the two electric telescopic rods retract synchronously, driving the first and second auxiliary plates to move downwards, so that the feed inlet is aligned with the opening end of the sampling cylinder. Then, the drive motor is started to rotate forward, and the drive gear causes the two racks to move in opposite directions, thereby driving the first and second auxiliary plates to move in opposite directions, so that the sludge enters the sampling cylinder through the feed inlet. Then, the electric telescopic rods and racks are reset in sequence, achieving the effect of sealing the opening end of the sampling cylinder and avoiding the problem of sample flowing out of the sampling cylinder during the lifting process. While the aforementioned application can use two electric telescopic rods and two auxiliary plates to seal the sampling tube after sampling, thus preventing the sample from flowing out during the lifting process, the application involves inserting the sampling tube into the silt for sampling. This results in limitations when sampling silt in some deeper rivers. If the sampling tube is too short, it cannot contact the silt. If the sampling tube is long enough, its weight and volume are large, requiring high operational skills from the staff. Utility Model Content

[0004] Therefore, it is necessary to provide a silt sampling device to address the limitations of the aforementioned devices in sampling silt from rivers.

[0005] A sludge sampling device includes: a connecting shaft and two sampling shells hinged to the connecting shaft; The opening and closing mechanism includes a first hinge block disposed inside the sampling shell, two first telescopic rods disposed between the first hinge block and the inner wall of the sampling shell, and two second telescopic rods disposed between the two first telescopic rods.

[0006] In one embodiment, a second hinge block is disposed below the first hinge block, and two second telescopic rods are respectively disposed between the second hinge block and the two first telescopic rods.

[0007] In one embodiment, a limiting tube is provided at the center of the first hinge block, the limiting tube passing through the first hinge block, and both ends of the first telescopic rod are provided with disassembly and assembly components.

[0008] In one embodiment, a metal flexible tube is fixedly connected to the surface of the connecting shaft, and a steel cable is disposed inside the metal flexible tube.

[0009] In one embodiment, one end of the steel cable passes through the limiting tube and is fixedly connected to the top of the second hinge block, and the other end of the steel cable passes through the connecting shaft and extends out to the movable end of the metal hose.

[0010] In one embodiment, counterweights are fixedly connected to both sides of the second hinge block, and the counterweights are made of stainless steel.

[0011] In one embodiment, the disassembly and assembly assembly includes a plurality of rotating shafts respectively disposed at both ends of the first telescopic rod. Each end of the first telescopic rod has a rotating shaft on both sides. The rotating shaft is slidably connected to the inner wall of the first telescopic rod. A spring is disposed between the rotating shaft and the inner wall of the first telescopic rod. A drive rod is fixedly connected to the surface of the rotating shaft. One end of the drive rod extends through the first telescopic rod.

[0012] In one embodiment, the two sampling shells are arranged opposite each other, and the bottom end of the sampling shell is provided with scraping teeth, which are staggered on the two sampling shells. Beneficial effects

[0013] 1. By incorporating an opening and closing mechanism in conjunction with a flexible metal hose and steel cable, the sludge sampling device can flexibly sample at various water depths, eliminating concerns about the length limitations of the sampling tube. Controlled by the steel cable, the device can perform sampling tasks underwater, overcoming the inconvenience of traditional sampling tubes in deep-water environments. Compared to traditional sampling tubes, the steel cable structure is smaller and lighter, significantly reducing the operational requirements for personnel and making the sampling process more convenient and safer. Furthermore, the combined use of the flexible metal hose and steel cable ensures that the sample is less prone to leakage during sampling, improving the reliability and accuracy of the sampling. 2. By incorporating a disassembly and assembly component, the first telescopic rod can be quickly removed, significantly improving the ease of maintenance of the device. Users can easily disassemble key components during cleaning, avoiding hard-to-reach cleaning blind spots in traditional structures and reducing the impact of residues on sampling results. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the sampling shell of this utility model; Figure 3 This is an exploded view of the present invention; Figure 4 This utility model Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the overall structure of the disassembly and assembly components of this utility model.

[0016] Figure label: 100. Sampling shell; 110. Connecting shaft; 120. Scraper teeth; 200. Metal flexible hose; 210. Steel cable; 300. Opening and closing mechanism; 310. First hinge block; 311. First telescopic rod; 312. Limiting tube; 320. Second hinge block; 321. Second telescopic rod; 322. Counterweight; 330. Assembly and disassembly assembly; 331. Rotating shaft; 332. Drive rod; 333. Spring. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0020] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0022] The following is combined Figures 1-5 This invention describes a sludge sampling device.

[0023] In one embodiment, a sludge sampling device includes: a connecting shaft 110 and two sampling shells 100 hinged to the connecting shaft 110; The opening and closing mechanism 300 includes a first hinge block 310 disposed inside the sampling shell 100, two first telescopic rods 311 disposed between the first hinge block 310 and the inner wall of the sampling shell 100, and two second telescopic rods 321 disposed between the two first telescopic rods 311.

[0024] like Figure 2 , Figure 3 and Figure 4As shown, a second hinge block 320 is disposed below the first hinge block 310, and two second telescopic rods 321 are respectively disposed between the second hinge block 320 and the two first telescopic rods 311. A limit tube 312 is disposed at the center of the first hinge block 310, and the limit tube 312 passes through the first hinge block 310. Both ends of the first telescopic rods 311 are provided with disassembly and assembly components 330. A metal flexible tube 200 is fixedly connected to the surface of the connecting shaft 110, and a steel cable 210 is disposed inside the metal flexible tube 200. One end of the steel cable 210 passes through the limit tube 312 and is fixedly connected to the top end of the second hinge block 320, and the other end of the steel cable 210 passes through the connecting shaft 110 and extends out of the movable end of the metal flexible tube 200. Counterweights 322, made of stainless steel, are fixedly connected to both sides of the second hinge block 320.

[0025] In this embodiment, both the first telescopic rod 311 and the second telescopic rod 321 are composed of two hinged rods. The hinged rod with a larger cross-sectional area is connected to either the first hinge block 310 or the second hinge block 320, while the hinged rod with a smaller cross-sectional area is hinged to either the sampling shell 100 or the end of the first telescopic rod 311. A telescopic spring 333 is provided between the two hinged rods. When the device is not disturbed by external forces, and the first telescopic rod 311 is stationary, the sampling shell 100 is in the unfolded state. The first telescopic rod 311 is fixedly connected to the inside of the sampling shell 100 via a connecting block. A connecting block is also provided at the end of the first telescopic rod 311 near the inner wall of the sampling shell 100. The second telescopic rod... The bottom end of rod 321 is hinged to the first telescopic rod 311 via the connecting block. When the sampling shell 100 sinks into the silt at the bottom of the water, when the user pulls the steel cable 210, the steel cable 210 will first pull the second hinge block 320 to move upward. At the same time, the second hinge block 320 will drive the two second telescopic rods 321 to retract towards the middle. At this time, the sampling shell 100 will be slowly closed with a small amplitude. When the second hinge block 320 contacts the bottom end of the limiting tube 312, the steel cable 210 will directly drive the first hinge block 310 to move upward through the second hinge block 320. At this time, the two first telescopic rods 311 will retract towards the middle with a large amplitude under the action of the first hinge block 310, thereby driving the sampling shell 100 to close and complete the sampling work. It should be noted that the opening and closing mechanism 300 of this device is located inside the sampling shell 100. Sampling of silt is typically used to assess water quality, pollutant migration risks, and engineering foundation stability, requiring representative samples to avoid local bias. The typical sample size is 1-2 kg, while the capacity of the sampling shell 100 is far greater than 2 kg. Furthermore, the opening and closing mechanism 300 occupies less than 30% of the internal space of the sampling shell 100, so it will not affect the normal operation of the device. All components used in this device are made of stainless steel, and the device requires timely cleaning after use. The opening and closing mechanism 300 can be disassembled for cleaning using the disassembly and assembly components 330. Additionally, silt is naturally soft and fluid, so it will not affect the opening and closing mechanism 300.

[0026] like Figure 1 , Figure 4 and Figure 5 As shown, the disassembly and assembly assembly 330 includes multiple rotating shafts 331 respectively disposed at both ends of the first telescopic rod 311. Each end of the first telescopic rod 311 has a rotating shaft 331 on both sides. The rotating shafts 331 are slidably connected to the inner wall of the first telescopic rod 311. A spring 333 is disposed between the rotating shaft 331 and the inner wall of the first telescopic rod 311. A drive rod 332 is fixedly connected to the surface of the rotating shaft 331, with one end of the drive rod 332 extending through the first telescopic rod 311. Two sampling shells 100 are disposed opposite each other. The bottom end of each sampling shell 100 is provided with scraping teeth 120, and the scraping teeth 120 on the two sampling shells 100 are staggered.

[0027] In this embodiment, both ends of the first telescopic rod 311 are hinged to the hinge block and the sampling shell 100 via the rotating shaft 331. Meanwhile, the drive rod 332 of this device has an "L" shaped cross-section, with most of the drive rod 332 completely inside the first telescopic rod 311, and a small portion vertically penetrating through the first telescopic rod 311. The end penetrating through the first telescopic rod 311 is spherical. When it is necessary to disassemble the first telescopic rod 311, the drive rods 332 on both sides are pressed manually. The drive rods 332 drive the rotating shaft 331 to compress the spring 333 and retract it into the first telescopic rod 311, thus completing the separation from the first hinge block 310 and the sampling shell 100, thereby completing the disassembly of the first hinge block 310.

[0028] Working principle: The user holds the metal hose 200 of this device at the edge of the sampling water area and puts the entire sampling shell 100 into the water. At this time, the first telescopic rod 311 and the second telescopic rod 321 are in the extended state. The two sampling shells 100 are in the unfolded state under the action of the first telescopic rod 311. Under the action of the counterweight 322, the sampling shell 100 descends vertically in the water. When the sampling shell 100 falls onto the silt at the bottom of the water, under the action of the counterweight 322, the sampling shell 100 will insert into the silt. After the sampling shell 100 is inserted into the silt, the user needs to hold the metal hose 200 with one hand and pull the steel cable 210 backward with the other hand. The metal hose 200 applies downward pressure to the connecting shaft 110. At the same time, the extension of the steel cable 210 will cause the second hinge block 320 to move upward, and at the same time, it will cause the two second telescopic rods 321 to retract inward. When the top of the second hinge block 320 contacts the bottom of the limiting tube 312, it will pull the first hinge block 310 to move upward. The upward movement of the first hinge block 310 will cause the two first telescopic rods 311 to retract inward, and at the same time, it will cause the two sampling shells 100 to close. During this process, the scraper teeth 120 will catch the silt between the two sampling shells 100. When the sampling shell 100 is completely closed, the sampling shell 100 has completed the collection of silt. At this time, the metal hose 200 and the steel cable 210 can be pulled back to retrieve the sampling shell 100.

[0029] It should be noted that the first telescopic rod 311, the second telescopic rod 321, the spring 333, the metal hose 200, and the steel cable 210 mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs, and will not be elaborated here.

[0030] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A sludge sampling device, characterized in that, include: Connecting shaft (110) and two sampling shells (100) hinged to connecting shaft (110); The opening and closing mechanism (300) includes a first hinge block (310) disposed inside the sampling shell (100), two first telescopic rods (311) are disposed between the first hinge block (310) and the inner wall of the sampling shell (100), and two second telescopic rods (321) are disposed between the two first telescopic rods (311).

2. The sludge sampling device according to claim 1, characterized in that, A second hinge block (320) is provided below the first hinge block (310), and two second telescopic rods (321) are respectively disposed between the second hinge block (320) and the two first telescopic rods (311).

3. The sludge sampling device according to claim 1, characterized in that, The first hinge block (310) has a limiting tube (312) at its center, which passes through the first hinge block (310). Both ends of the first telescopic rod (311) are provided with disassembly and assembly components (330).

4. The sludge sampling device according to claim 1, characterized in that, A metal hose (200) is fixedly connected to the surface of the connecting shaft (110), and a steel cable (210) is installed inside the metal hose (200).

5. The sludge sampling device according to claim 4, characterized in that, One end of the steel cable (210) passes through the limiting tube (312) and is fixedly connected to the top of the second hinge block (320). The other end of the steel cable (210) passes through the connecting shaft (110) and extends out to the movable end of the metal hose (200).

6. The sludge sampling device according to claim 2, characterized in that, The second hinge block (320) has a counterweight (322) fixedly connected to both sides, and the counterweight (322) is made of stainless steel.

7. The sludge sampling device according to claim 3, characterized in that, The disassembly and assembly assembly (330) includes multiple rotating shafts (331) respectively disposed at both ends of the first telescopic rod (311). Each end of the first telescopic rod (311) is provided with a rotating shaft (331) on both sides. The rotating shaft (331) is slidably connected to the inner wall of the first telescopic rod (311). A spring (333) is disposed between the rotating shaft (331) and the inner wall of the first telescopic rod (311). A drive rod (332) is fixedly connected to the surface of the rotating shaft (331). One end of the drive rod (332) passes through the first telescopic rod (311).

8. The sludge sampling device according to claim 1, characterized in that, The two sampling shells (100) are arranged opposite each other, and the bottom end of the sampling shell (100) is provided with scraping teeth (120), and the scraping teeth (120) on the two sampling shells (100) are arranged alternately.

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