A silt sampling device

Abstract

This utility model discloses a sludge sampling device, including a sampling cylinder. Rotating components are fixedly installed on both sides of the outer surface of the sampling cylinder. A closing lever is fixedly connected to the movable end of each of the two rotating components. A guide rod is fixedly connected to the inner wall of one side of each of the two closing levers. A slider is slidably fitted onto the outer surface of each of the two guide rods. In this utility model, by setting a scale on the outer surface of the long rod, combined with a stable grip, the operator can accurately control the depth to which the sampling cylinder is inserted into the sludge, meeting the sampling needs at different depths and avoiding the impact on sample representativeness due to excessive or shallow insertion. Simultaneously, the linkage between the manual drive component, the slider, the connecting frame, and the rotating components allows for convenient control of the opening and closing of the closing lever. During insertion, the lever remains closed to reduce resistance; after sampling, it closes to prevent sludge from falling out, significantly improving the accuracy and convenience of the sampling operation.

Description

Technical Field

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

[0002] In fields such as environmental governance, geological exploration, water conservancy engineering construction, and ecological research, the collection and analysis of silt samples is an indispensable and crucial step. The data results have direct guiding significance for engineering design, pollution assessment, and the formulation of ecological restoration plans. Therefore, the reliability, ease of operation, and sample integrity of silt sampling devices are of paramount importance.

[0003] Currently, there are many types of sludge sampling devices on the market, but they still have many limitations in practical applications. In terms of depth control, traditional devices rely heavily on the operator's experience to judge the insertion depth, lacking intuitive and accurate scale markings. This leads to poor consistency in sample depth collected by different operators, especially when stratified sampling or sampling at specific depths is required. This makes it difficult to meet actual needs, easily resulting in insufficient sample representativeness and affecting the scientific validity of subsequent data analysis.

[0004] Regarding sample retention, the bottom structure design of existing sampling devices has significant flaws. Some devices use open sampling tubes, and during the extraction process after insertion into the sludge, the lack of an effective sealing mechanism makes it easy for the sludge sample to fall off the bottom of the sampling tube due to gravity, resulting in sample loss. Other devices with sealing components often have complex transmission structures, frequently using gear meshing or chain drives to operate the sealing components. This is not only cumbersome to operate, but also prone to jamming and failure in the high-viscosity, high-resistance environment of sludge, as mud and sand can easily enter the transmission gaps, severely affecting sampling efficiency and reliability.

[0005] Therefore, a sludge sampling device is proposed. Utility Model Content

[0006] This invention is a sludge sampling device proposed to address the shortcomings of existing technologies.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a sludge sampling device, comprising a sampling cylinder, wherein rotating parts are fixedly installed on both sides of the outer surface of the sampling cylinder, and closing paddles are fixedly connected to the movable ends of the two rotating parts, and guide rods are fixedly connected to the inner walls of one side of the two closing paddles, sliders are slidably sleeved on the outer surfaces of the two guide rods, connecting frames are fixedly connected to the tops of the two sliders, and sliding rods are rotatably sleeved on the outer surfaces of the two connecting frames, with the sliding rods penetrating the sampling cylinder;

[0008] The top of the sampling tube is symmetrically and fixedly connected to two long rods, and the top of the two long rods is fixedly connected to a handle. A manual drive assembly is installed between the handle and the two sliding rods.

[0009] The outer surface of each of the long rods is provided with graduations.

[0010] Furthermore, each of the two rotating components includes two fixed blocks, and the fixed blocks are fixedly connected to the sampling cylinder. The two fixed blocks are jointly fixedly connected to a support shaft. A connecting block is rotatably sleeved on the outer surface of the support shaft, and the connecting block is fixedly connected to the closing lever. Through the cooperation of the fixed blocks and the support shaft, the rotation of the closing lever is made more stable and reliable.

[0011] Furthermore, the edges of both closing levers are fixedly covered with sealing gaskets. The sealing gaskets effectively improve the sealing performance when the closing levers are closed, prevent the sludge sample from leaking during the lifting process, and reduce the frictional wear between the levers and the sampling cylinder.

[0012] Furthermore, both slide rods slide in a sealed manner with the sampling cylinder. The sealed sliding fit between the slide rods and the sampling cylinder ensures the airtightness of the sampling cylinder, preventing external water or impurities from entering, while also ensuring the smooth movement of the slide rods.

[0013] Furthermore, the manual drive assembly includes a handwheel, which is positioned above the handle. A screw is fixedly connected to the bottom of the handwheel, and the screw passes through the handle and is rotatably connected to the handle. A nut is threaded onto the outer surface of the screw, allowing the operator to easily control the opening and closing of the latch, saving effort.

[0014] Furthermore, a sliding plate is fixedly sleeved on the outer surface of the nut, and the sliding plate is slidably sleeved on the outer surface of the two long rods and fixedly connected to the two sliding rods. The setting of the sliding plate realizes the linkage between the nut and the sliding rods, ensuring that the two sliding rods move synchronously.

[0015] The beneficial effects of this utility model are:

[0016] In use, this sludge sampling device, with its graduated scale on the outer surface of the long rod and a stable grip, allows operators to precisely control the depth to which the sampling tube is inserted into the sludge, meeting sampling needs at different depths and avoiding sample representativeness issues caused by insertion that is too deep or too shallow. Simultaneously, the linkage between the manual drive component, slide bar, connecting frame, and rotating parts allows for convenient control of the opening and closing of the closing lever. During insertion, the lever remains closed to reduce resistance, and after sampling, it closes to prevent sludge from falling out, significantly improving the accuracy and convenience of the sampling operation.

[0017] In use, this utility model discloses a sludge sampling device that employs a combination structure of a sampling cylinder and a closing lever. A sliding rod drives a slider to move along a guide rod, achieving stable rotation of the closing lever around a rotating component and ensuring effective retention of the sludge sample during the sampling process. The screw and nut of the manual drive component provide a stable driving force, ensuring reliable operation of the closing lever. Combined with the sealed sliding design of the sliding rod and sampling cylinder, the internal airtightness of the sampling cylinder is guaranteed. The overall structure is compact and easy to operate. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 : A three-dimensional structural schematic diagram of this utility model;

[0020] Figure 2 The present utility model Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 The present utility model Figure 1 Enlarged view of point B in the middle;

[0022] Figure 4 : A partial cross-sectional view of the present invention.

[0023] The attached figures are labeled as follows:

[0024] 1. Long rod; 2. Sliding rod; 3. Sampling cylinder; 4. Closing lever; 5. Slide plate; 6. Scale; 7. Handwheel; 8. Grip; 9. Nut; 10. Screw; 11. Connecting block; 12. Support shaft; 13. Fixing block; 14. Connecting frame; 15. Sealing gasket; 16. Sliding block; 17. Guide rod. Detailed Implementation

[0025] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1 to 4As shown, a sludge sampling device is disclosed, including a sampling cylinder 3. Rotating components are fixedly installed on both sides of the outer surface of the sampling cylinder 3. The movable ends of the two rotating components are fixedly connected to closing levers 4. Each rotating component includes two fixing blocks 13, and the fixing blocks 13 are fixedly connected to the sampling cylinder 3. The two fixing blocks 13 are fixedly connected to a support shaft 12. A connecting block 11 is rotatably sleeved on the outer surface of the support shaft 12, and the connecting block 11 is fixedly connected to the closing levers 4. The closing levers 4 are made of lightweight aluminum alloy and the surface is anodized to improve wear resistance.

[0027] Both closing levers 4 have sealing gaskets 15 fixedly wrapped around their edges. The sealing gaskets 15 are made of corrosion-resistant silicone rubber with a thickness of 5-8mm to ensure sealing performance. Guide rods 17 are fixedly connected to the inner wall of one side of both closing levers 4. The guide rods 17 are fixedly welded to the closing levers 4 for durability. The surface of the guide rods 17 is polished and treated for corrosion resistance. Slider blocks 16 are slidably sleeved on the outer surface of both guide rods 17. The sliders 16 have self-lubricating copper sleeves embedded in them with a friction coefficient of less than 0.1. Connecting brackets 14 are fixedly connected to the top of both sliders 16. Slider rods 2 are rotatably sleeved on the outer surface of both connecting brackets 14. The slide rods 2 pass through the sampling cylinder 3 and slide in a sealed manner with the sampling cylinder 3. A polytetrafluoroethylene sealing ring is provided at the penetration point to ensure sealed sliding.

[0028] Two long rods 1 are symmetrically fixedly connected to the top of the sampling cylinder 3. A handle 8 is fixedly connected to the top of the two long rods 1. A manual drive assembly is installed between the handle 8 and the two sliding rods 2. The manual drive assembly includes a handwheel 7, which is located above the handle 8. A screw 10 is fixedly connected to the bottom of the handwheel 7, and the screw 10 passes through the handle 8 and is rotatably connected to the handle 8. A nut 9 is threaded onto the outer surface of the screw 10. The helix angle of the screw 10 is smaller than the friction angle, which gives the screw 10 a self-locking ability and can prevent it from shifting due to vibration or load. The nut 9 is made of copper-based self-lubricating material. A sliding plate 5 is fixedly fitted onto the outer surface of the nut 9, and the sliding plate 5 is slidably fitted onto the outer surface of the two long rods 1 and fixedly connected to the two sliding rods 2.

[0029] The outer surface of a single long rod 1 is marked with a scale 6.

[0030] Working principle: The operator holds the handle 8 and vertically inserts the sampling cylinder 3 into the silt. The insertion depth can be accurately controlled by the scale 6 on the long rod 1. During insertion, the sealing gasket 15 ensures the seal between the closing levers 4 and between the closing levers and the sampling cylinder 3. After reaching the preset depth, rotating the handwheel 7 drives the screw 10 to rotate, causing the nut 9 to move axially along the screw 10. The nut 9 drives the slide plate 5 to slide along the long rod 1. The slide plate 5 simultaneously pushes the two sliding rods 2 downward inside the sampling cylinder 3. The sliding rods 2 drive the slider 16 to move along the guide rod 17 through the connecting frame 14. Since the closing levers 4 are hinged to the sampling cylinder 3 through the rotating part, the movement of the slider 16 forces the two closing levers 4 to rotate outward around the support shaft 12 to open. After the two closing levers 4 open, the whole cylinder can be moved downward to collect the sample. After sampling, rotating the handwheel 7 in the reverse direction will cause the sliding rod 2 to move upward through the screw 10 and nut 9 mechanism, causing the closing lever 4 to rotate inward and close. The closing action of the closing lever 4 seals the bottom of the sampling cylinder 3, preventing the sludge sample from falling out and facilitating sample removal. Throughout the process, the sliding rod 2 and the sampling cylinder 3 maintain a sealed sliding motion, ensuring the internal airtightness of the sampling cylinder 3. The cooperation of the guide rod 17 and the slider 16 ensures the stability of the opening and closing action of the closing lever 4. After each sampling, the entire system needs to be rinsed to ensure overall effectiveness.

[0031] The entire device undergoes salt spray testing to ensure its service life in humid environments. The assembly clearances of each component are optimized through finite element analysis to ensure no jamming occurs under maximum load.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sludge sampling device, comprising a sampling cylinder (3), characterized in that: Rotating components are fixedly installed on both sides of the outer surface of the sampling tube (3). The movable ends of the two rotating components are fixedly connected to closing paddles (4). Guide rods (17) are fixedly connected to the inner walls of one side of the two closing paddles (4). Sliding blocks (16) are slidably sleeved on the outer surfaces of the two guide rods (17). Connecting frames (14) are fixedly connected to the tops of the two sliding blocks (16). Sliding rods (2) are rotatably sleeved on the outer surfaces of the two connecting frames (14), and the sliding rods (2) are set through the sampling tube (3). The top of the sampling tube (3) is symmetrically fixedly connected to two long rods (1), and the top of the two long rods (1) is fixedly connected to a handle (8). A manual drive assembly is installed between the handle (8) and the two slide rods (2). The outer surface of each of the long rods (1) is provided with graduations (6).

2. The sludge sampling device according to claim 1, characterized in that: Both of the rotating parts include two fixed blocks (13), and the fixed blocks (13) are fixedly connected to the sampling cylinder (3). The two fixed blocks (13) are fixedly connected to a support shaft (12). A connecting block (11) is rotatably sleeved on the outer surface of the support shaft (12), and the connecting block (11) is fixedly connected to the closing lever (4).

3. The sludge sampling device according to claim 1, characterized in that: The edges of both closing levers (4) are fixedly covered with sealing gaskets (15).

4. The sludge sampling device according to claim 1, characterized in that: Both of the slide rods (2) slide in a sealed manner with the sampling cylinder (3).

5. A sludge sampling device according to claim 1, characterized in that: The manual drive assembly includes a handwheel (7) and is positioned above the handle (8). A screw (10) is fixedly connected to the bottom of the handwheel (7) and passes through the handle (8) and is rotatably connected to the handle (8). A nut (9) is threaded onto the outer surface of the screw (10).

6. A sludge sampling device according to claim 5, characterized in that: The outer surface of the nut (9) is fixedly fitted with a sliding plate (5), and the sliding plate (5) is slidably fitted on the outer surface of the two long rods (1) and fixedly connected to the two sliding rods (2).

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