Automatic sand sampling structure placed in a lead sinker

Abstract

The utility model discloses an automatic sand taking sampling structure placed in lead fish, belongs to lead fish sampling device field, it breaks through the design limitation of traditional lead fish integrated sand storage, water storage cavity, adopts independent type collection water tank as sample storage carrier, after sampling is completed, only needs to open the sealed door and can directly take out the collection water tank, thoroughly solved the phenomenon that sample is released from the inside of sand storage or water storage cavity in traditional structure, still has the phenomenon that part remains in the inside of sand storage or water storage cavity, or the phenomenon that sample is easy to spill, loss in the release process, the original state of sand sample is retained to the maximum degree, such as silt content, provides core guarantee for the accuracy of subsequent detection data.

Description

Technical Field

[0001] This utility model relates to the field of lead fish sampling devices, and more specifically, to an automatic sand sampling structure placed inside a lead fish. Background Technology

[0002] In fields such as hydrological monitoring, river management, and water conservancy engineering construction, the accurate acquisition of parameters such as sediment content and particle size distribution in water bodies is crucial. These data are not only the core basis for analyzing soil erosion in watersheds and assessing reservoir siltation, but also provide key support for water conservancy engineering design, water resource development and utilization, and ecological environment restoration. Therefore, water sediment sampling, as a fundamental step in the above work, directly affects the accuracy of subsequent data analysis results and the scientific basis of engineering decisions due to its sampling efficiency, sample integrity, and ease of operation.

[0003] Currently, most mainstream water sediment sampling equipment in the industry uses lead weights as carriers, utilizing their own weight to sink to the target water layer and ensure the stability of the equipment during sampling. However, existing sediment sampling structures placed inside lead weights still have many shortcomings in practical applications, making it difficult to meet the requirements for efficient and accurate sampling: For example, existing sampling structures have sand or water storage chambers directly inside the lead weight, which is an integrated design. After the sampling operation is completed, the operator needs to lift the entire lead weight out of the water and release the sample by opening the sand or water storage chamber. If the operation is not done properly, the sample may spill or be lost, damaging the original state of the sample and affecting the authenticity of the subsequent test data. Therefore, we have proposed an automatic sand-collecting sampling structure placed inside the lead weight to solve the above problems. Utility Model Content

[0004] 1. Technical problems to be solved The existing sampling structure has its sand or water storage chamber directly inside the lead weight, which is an integrated design. After the sampling operation is completed, the operator needs to lift the entire lead weight out of the water and then release the sample by opening the sand or water storage chamber. If the operation is not done properly, the sample may spill or be lost, which will damage the original state of the sample and affect the authenticity of the subsequent test data.

[0005] 2. Technical Solution To solve the above problems, the present invention adopts the following technical solution.

[0006] An automatic sand-collecting sampling structure placed inside a lead weight includes a lead weight body with a water storage cavity inside. An opening is located on one side of the lead weight body's outer wall, communicating with the interior of the water storage cavity. A sealing door is hinged to one side of the outer wall of the opening, and the other side of the sealing door is connected to the other side of the inner wall of the opening via a latch. A set of end plates is fixedly welded to one side of the inner wall of the sealing door, and the end plates are fixedly welded together by an L-shaped support plate. A side railing is fixedly welded to the bottom side of the L-shaped support plate. A water collection tank is placed inside the L-shaped support plate. The inner wall of the water collection tank and the side railing are in close contact on both sides of the outer wall of the water collection tank. An opening is located at the top of the water collection tank, with a sealing cap threaded into the opening. An L-shaped water pipe connector is fixedly connected to one side of the top of the water collection tank, communicating with the interior of the water collection tank.

[0007] Furthermore, a submersible pump is fixedly installed at the bottom of the inner wall of the water storage chamber, and the submersible pump is provided with a water inlet end and a water outlet end. A solenoid valve is fixedly installed on the water inlet end through a water inlet pipe, and a second water inlet pipe is fixedly installed on one side of the solenoid valve. A water inlet elbow is fixedly installed on the top of the outer wall of the lead fish body, and the bottom of the water inlet elbow extends into the interior of the water storage chamber. The end of the second water inlet pipe is connected to the bottom end of the water inlet elbow.

[0008] Furthermore, a drain hose is fixedly installed on the drain end, and the other end of the drain hose is tightly connected to the end of the L-shaped water pipe connector. An anti-detachment clamp is fitted on the other end of the drain hose at the connection between the other end of the drain hose and the end of the L-shaped water pipe connector.

[0009] Furthermore, a sealing ring is fixedly affixed to the inner edge of the sealing door at the connection between the outer edge of the opening and the sealing door.

[0010] Furthermore, a set of lifting lugs is fixedly welded to the top of the outer wall of the lead fish body, and the set of lifting lugs are connected to each other by a lifting device.

[0011] 3. Beneficial Effects Compared with existing technologies, the advantages of this utility model are: (1) This structure breaks through the design limitations of the traditional integrated sand and water storage chamber of lead fish. It adopts an independent collection water tank as the sample storage carrier. After sampling, the collection water tank can be directly taken out by simply opening the sealed door. This completely solves the problem that in the traditional structure, some samples are released from the sand or water storage chamber and still remain inside the sand or water storage chamber, or the sample is easily spilled or lost during the release process. It preserves the original state of the sand-containing sample to the greatest extent, such as the mud and sand content, and provides a core guarantee for the accuracy of subsequent test data. (2) In this scheme, the solenoid valve on the submersible pump can be set to precisely cut off or open the water inlet passage, so as to prevent the sample in the collection tank from flowing back due to negative pressure after sampling, or from the external water pressure being too high, causing external water to automatically enter the submersible pump and the collection tank. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the water storage cavity of this utility model; Figure 3 This is a schematic diagram showing the installation position of the solenoid valve of this utility model; Figure 4 This is a schematic diagram of the installation structure of the water collection tank of this utility model; Figure 5 This is a schematic diagram of the L-shaped support plate structure of this utility model.

[0013] Explanation of the labels in the diagram: 1. Lead weight body; 101. Water storage chamber; 102. Opening one; 2. Hinge; 3. Sealed door; 4. Lock; 5. End plate; 6. L-shaped support plate; 7. Side railing; 8. Water collection tank; 801. Opening two; 802. L-shaped water pipe connector; 9. Submersible pump; 901. Water inlet end; 902. Drain end; 10. Water inlet pipe one; 11. Solenoid valve; 12. Water inlet pipe two; 13. Water inlet elbow; 14. Drain hose; 15. Anti-detachment clamp. Detailed Implementation

[0014] The technical solutions in 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. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0015] Example: Please see Figures 1-5An automatic sand-collecting sampling structure placed inside a lead weight includes a lead weight body 1, with a water storage cavity 101 inside the lead weight body 1. An opening 102 is formed on one side of the outer wall of the lead weight body 1, communicating with the interior of the water storage cavity 101. A sealing door 3 is rotatably connected to one side of the outer wall of the opening 102 via a hinge 2. The other side of the sealing door 3 is connected to the other side of the inner wall of the opening 102 via a latch 4. A set of end plates 5 are fixedly welded to one side of the inner wall of the sealing door 3, and the set of end plates 5 are connected by... L-shaped support plate 6 is fixedly welded, and a side railing 7 is also fixedly welded to one side of the bottom of L-shaped support plate 6. A water collection tank 8 is placed inside L-shaped support plate 6. The two sides of the outer wall of water collection tank 8 are in close contact with the inner wall of L-shaped support plate 6 and the side railing 7, respectively. An opening 801 is opened at the top of water collection tank 8, and a sealing cap is threaded inside the opening 801. An L-shaped water pipe connector 802 is fixedly connected to one side of the top of water collection tank 8. The inside of L-shaped water pipe connector 802 is connected to the inside of water collection tank 8. A submersible pump 9 is fixedly installed at the bottom of the inner wall of the water storage chamber 101. The submersible pump 9 is provided with an inlet end 901 and a drain end 902. A solenoid valve 11 is fixedly installed on the inlet end 901 through an inlet pipe 10. An inlet pipe 2 12 is fixedly installed on one side of the solenoid valve 11. An inlet elbow 13 is fixedly installed on the top of the outer wall of the lead fish body 1. The bottom of the inlet elbow 13 extends into the interior of the water storage chamber 101. The end of the inlet pipe 2 12 is connected to the bottom end of the inlet elbow 13. A drain hose 14 is fixedly installed on the drain end 902. The other end of the drain hose 14 is tightly connected to the end of the L-shaped water pipe connector 802. An anti-detachment clamp 15 is fitted on the other end of the drain hose 14 at the connection between the other end of the drain hose 14 and the end of the L-shaped water pipe connector 802. A sealing ring is fixedly pasted on the inner edge of the sealing door 3, where the outer edge of the opening 102 connects with the sealing door 3; A set of lifting lugs is fixedly welded to the top of the outer wall of the lead fish body 1, and the lifting lugs are connected to each other by a lifting device.

[0016] The working principle of this automatic sand-collecting sampling structure placed inside the lead weight is as follows: First, confirm that the sealing door 3 on the side of the lead fish body 1 is completely closed by the latch 4, and that the sealing ring on the inner edge of the sealing door 3 is tightly fitted with the outer edge of the opening 102 to prevent water leakage in the water storage chamber 101 underwater. Check the connection status of the drain hose 14 with the drain end 902 of the submersible pump 9 and the L-shaped water pipe connector 802 of the collection tank 8, and ensure that the anti-detachment clamp 15 is tight to prevent the hose from falling off during the sampling process and causing sample loss. At the same time, close the threaded sealing cover of the second opening 801 on the top of the collection tank 8 so that the tank is connected to the outside only through the L-shaped water pipe connector 802 to ensure the uniqueness of sample collection. A set of lifting lugs welded to the top of the lead weight body 1 is connected to the matching lifting device. The lifting device controls the release speed of the lead weight to avoid the lead weight's posture deviation due to water flow impact. Relying on the gravity generated by the lead weight body 1, the buoyancy of the water and the water flow resistance are offset, so that the lead weight sinks vertically or stably to the preset sampling water layer (the specific structure and use principle of the lead weight body are already known and publicly disclosed technologies, so they will not be described in detail here). The solenoid valve 11 is opened by the external control unit, and the submersible pump 9 is started at the same time. When the submersible pump is working, a negative pressure is generated at the water inlet 901, so that the sand-containing water of the target water layer enters through the water inlet elbow 13 opening at the top of the lead fish body 1 in the direction of water flow, reducing the water inlet resistance and flowing through the second water inlet pipe 12, the solenoid valve 11, and the first water inlet pipe 10 in sequence, and finally reaching the water inlet 901 of the submersible pump 9. The submersible pump 9 pressurizes the sand-laden water it draws in and delivers it to the drain hose 14 through the drain end 902. With the help of the flexible adaptability of the drain hose 14, the sand-laden water flows along the hose and is introduced into the collection tank 8 through the L-shaped water pipe joint 802. During this process, the L-shaped support plate 6 and the side railing 7 limit and fix the collection tank 8 to prevent the tank from shifting due to water flow impact or submersible pump vibration, and ensure the continuous stability of the water inlet passage. According to the preset sampling volume requirement, the sampling volume is controlled by controlling the working time of the submersible pump 9. When the sand-containing water in the collection tank 8 reaches the predetermined capacity, the solenoid valve 11 is closed to cut off the water inlet passage, and then the submersible pump 9 is stopped to avoid the sample in the tank from flowing back due to negative pressure. After sampling, the lead fish body 1 is slowly lifted out of the water using a hoist. After placing the lead fish body 1 on a stable operating platform, the latch 4 of the sealing door 3 is opened, and the sealing door 3 is rotated outward around the hinge 2. Since the collection tank 8 is only limited by the L-shaped support plate 6 and the side railing 7, the collection tank 8 can be directly removed from the water storage cavity 101 of the lead fish body 1. Finally, the threaded sealing cap of the top opening 801 of the collection tank 8 is unscrewed, and the sand-containing sample inside is poured into a special testing container for analysis of parameters such as sediment content and particle size distribution. In summary, this structure, through the collaborative principle of "lead fish positioning and independent water tank sample storage," solves the pain points of traditional sampling devices such as easy sample loss and cumbersome operation, ensuring the accuracy of the sampling process and the integrity of the samples, and is suitable for the efficient sediment sampling needs in scenarios such as hydrological monitoring and river management.

[0017] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. An automatic sand-collecting sampling structure placed inside a lead weight, comprising a lead weight body (1), characterized in that: The lead fish body (1) has a water storage cavity (101) inside, and an opening (102) is opened on one side of the outer wall of the lead fish body (1). The opening (102) is connected to the inside of the water storage cavity (101). A sealing door (3) is rotatably connected to one side of the outer wall of the opening (102) by a hinge (2). The other side of the sealing door (3) is connected to the other side of the inner wall of the opening (102) by a latch (4). A set of end plates (5) is fixedly welded to one side of the inner wall of the sealing door (3), and the set of end plates (5) are fixedly welded together by an L-shaped support plate (6). A side railing (7) is fixedly welded to one side of the bottom of the L-shaped support plate (6). A water collection tank (8) is placed inside the L-shaped support plate (6). The two sides of the outer wall of the water collection tank (8) are in close contact with the inner wall of the L-shaped support plate (6) and the side railing (7). An opening (801) is provided at the top of the water collection tank (8), and a sealing cap is threaded inside the opening (801). An L-shaped water pipe connector (802) is fixedly connected to one side of the top of the water collection tank (8). The interior of the L-shaped water pipe connector (802) is connected to the interior of the water collection tank (8).

2. The automatic sand sampling structure placed inside a lead weight according to claim 1, characterized in that: A submersible pump (9) is fixedly installed on the bottom of the inner wall of the water storage chamber (101), and the submersible pump (9) is provided with an inlet end (901) and a drain end (902). A solenoid valve (11) is fixedly installed on the inlet end (901) through an inlet pipe (10). An inlet pipe (12) is fixedly installed on one side of the solenoid valve (11). An inlet elbow (13) is fixedly installed on the top of the outer wall of the lead fish body (1), and the bottom of the inlet elbow (13) extends into the interior of the water storage chamber (101). The end of the inlet pipe (12) is connected to the bottom end of the inlet elbow (13).

3. The automatic sand sampling structure placed inside a lead weight according to claim 2, characterized in that: A drain hose (14) is fixedly installed on the drain end (902). The other end of the drain hose (14) is tightly connected to the end of the L-shaped water pipe joint (802). An anti-detachment clamp (15) is fitted on the other end of the drain hose (14) at the connection between the other end of the drain hose (14) and the end of the L-shaped water pipe joint (802).

4. The automatic sand-collecting sampling structure placed inside a lead weight according to claim 1, characterized in that: A sealing ring is fixedly pasted on the inner edge of the sealing door (3) located at the connection between the outer edge of the opening (102) and the sealing door (3).

5. The automatic sand sampling structure placed inside a lead weight according to claim 1, characterized in that: A set of lifting lugs is fixedly welded to the top of the outer wall of the lead fish body (1), and the set of lifting lugs are connected by a lifting device.

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