River sediment sampling device

Abstract

The application provides a riverway sediment sampling device, belonging to the technical field of riverway sediment sampling, which comprises a shell and sampling barrels. The bottom of the shell is slidably connected with two sampling barrels which are oppositely arranged with openings. The shell is internally provided with wedge blocks. The wedge blocks and the inner wall of the shell are provided with springs. The two wedge blocks are provided with trapezoidal blocks. In the above scheme, the wedge blocks, the springs and the sampling barrels are arranged. The two sampling barrels are folded. The design of the spring enables the sampling barrels to continuously maintain the state of mutual extrusion. The closure between the two sampling barrels is tight. When the compact sediment is stuck between the two sampling barrels, the rubber diaphragm is bulged to one side to increase the available storage space in the sampling barrel, thereby further accommodating the sediment, enabling the sampling barrel to be smoothly closed, and enabling the sample to be smoothly collected.

Description

Technical Field

[0001] This application relates to the field of river sediment sampling technology, and in particular to a river sediment sampling device. Background Technology

[0002] Sediment is the direct carrier of changes in river morphology. Sediment sampling is a key means to understand natural processes, support engineering decisions, and protect the ecological environment. By analyzing the characteristics of sediment such as particle size, source, and transport volume, we can understand the erosion, transportation, and deposition processes of river channels, predict riverbed change trends (such as siltation or downcutting), and provide a basis for flood control and waterway maintenance. However, existing river sediment sampling devices need to be inserted into the riverbed to collect sediment. The dense sediment creates significant resistance to the sampling device, which can easily lead to the sampling tube not closing properly and the sample being difficult to remove. Therefore, this application provides a river sediment sampling device to meet the requirements. Utility Model Content

[0003] In view of this, the purpose of this application is to provide a river sediment sampling device to reduce the difficulty of sampling operations.

[0004] To solve the above-mentioned technical problems, this application provides the following technical solution: A river sediment sampling device includes a housing and sampling cylinders. Two sampling cylinders with opposing openings are slidably connected to the bottom of the housing. A wedge is disposed inside the housing, and a spring is disposed between the wedge and the inner wall of the housing. A trapezoidal block is disposed between the two wedges. A diaphragm is disposed inside the sampling cylinders, dividing their internal cavity in two. A driving assembly for driving the trapezoidal block to move along the vertical line of the housing is disposed at the top of the housing. The driving assembly includes a driving rod that passes through the center of the top of the housing, and one end of the driving rod is connected to the top of the trapezoidal block.

[0005] Preferably, the drive assembly further includes a threaded sleeve, which is sleeved on the outside of the drive rod. One end of the threaded sleeve is fixed to the top of the housing, and the connection between the threaded sleeve and the drive rod is provided with meshing threads.

[0006] Preferably, one end of the drive rod inserted into the housing is rotatably connected to the trapezoidal block via a bearing.

[0007] Preferably, a handle is provided on both sides of the top of the threaded sleeve, a handle is provided on the top of the drive rod, a positioning pin is provided inside the handle, and a hole matching the positioning pin is provided on the handle.

[0008] Preferably, the bottom of the housing is provided with strip-shaped holes on both sides, and the bottom of the wedge is provided with a rectangular protrusion, the bottom protrusion of the wedge penetrating through the strip-shaped holes at the bottom of the housing.

[0009] Preferably, the wedge and the trapezoidal block are in sliding engagement via an inclined surface.

[0010] Preferably, both sampling tubes are fitted to the bottom of the housing, and each sampling tube has a screw cap at its end.

[0011] Preferably, a guide plate is provided at the edge of the opening of the sampling tube, and the angle between the guide plate and the sampling tube is 90°.

[0012] Preferably, the sum of the axial lengths of the two sampling cylinders is the same as the width of the shell.

[0013] Preferably, a baffle is provided at the bottom of the housing.

[0014] In the above scheme, by setting up a wedge, a spring, and a sampling tube, the two sampling tubes close together. The spring design allows the sampling tubes to maintain a state of mutual compression, making the two sampling tubes tightly closed. When dense mud and sand get stuck between the two sampling tubes, the rubber diaphragm can bulge to one side, increasing the available storage space inside the sampling tube, thereby further accommodating this mud and sand, allowing the sampling tube to close smoothly and collect the sample successfully.

[0015] In the above scheme, by setting a screw cap and a diaphragm, when discharging the mud and sand in the sampling tube, the diaphragm can also be vibrated by vibrating the sampling tube to disperse the mud and sand in the sampling tube, thereby smoothly discharging the sample and facilitating the entire sampling process. Attached Figure Description

[0016] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0017] Figure 1 This is a schematic diagram of the overall structure in this application; Figure 2 This is a schematic diagram of the cross-sectional structure of the shell in this application; Figure 3 This is a schematic diagram of the drive rod structure in this application; Figure 4 This is a schematic diagram of the baffle structure in this application; Figure 5 This is a schematic diagram of the cross-sectional structure of the sampling cylinder in this application.

[0018] [Figure Labels] 1. Housing, 101. Wedge, 102. Spring, 103. Trapezoidal block, 104. Baffle, 2. Sampling cylinder, 201. Diaphragm, 202. Screw cap, 203. Guide plate, 3. Drive rod, 301. Threaded sleeve, 3011. Handle 1, 302. Positioning pin, 3021. Detailed Implementation

[0019] like Figure 1 , Figure 2 , Figure 3 The present application provides a river sediment sampling device, which includes a housing 1 and a sampling cylinder 2. The bottom of the housing 1 is slidably connected to the sampling cylinder 2 with two openings arranged opposite each other. The inside of the housing 1 is provided with a wedge 101 and a spring 102 is provided between the wedge 101 and the inner wall of the housing 1. A trapezoidal block 103 is provided between the two wedges 101. The inside of the sampling cylinder 2 is provided with a diaphragm 201 that divides its internal cavity into two. The top of the housing 1 is provided with a driving assembly for driving the trapezoidal block 103 to move along the vertical line of the housing 1. The driving assembly includes a driving rod 3, which passes through the center of the top of the housing 1. One end of the driving rod 3 is connected to the top of the trapezoidal block 103. During sampling, the housing 1 and the sampling cylinder 2 are simultaneously inserted into the silt in the river. By applying pressure to the drive rod 3, the trapezoidal block 103 is controlled to squeeze the wedge block 101. The two wedge blocks 101 are squeezed and move away from each other. At this time, the two sampling cylinders 2 are also separated from each other. The silt to be collected enters the sampling cylinder 2 through the channel between the two sampling cylinders 2. After collection is completed, the drive rod 3 is lifted upward. The drive rod 3 controls the trapezoidal block 103 to move upward. At the same time, the two wedge blocks 101 move closer to each other under the compression of the spring 102 until the two sampling cylinders 2 close together. The design of the spring 102 allows the sampling cylinders 2 to maintain a state of mutual compression. When dense silt is stuck between the two sampling cylinders 2, it can be bulged to one side by the rubber diaphragm 201 to increase the available storage space inside the sampling cylinder 2, thereby further accommodating this part of the silt and allowing the sampling cylinder 2 to close smoothly so as to successfully collect the sample. When discharging the mud and sand in the sampling cylinder 2, the diaphragm 201 can also be vibrated by shaking the sampling cylinder 2 to disperse the mud and sand in the sampling cylinder 2, thereby smoothly discharging the sample and facilitating the entire sampling process.

[0020] In this embodiment, as Figures 2-5 As shown, the drive assembly also includes a threaded sleeve 301, which is sleeved on the outside of the drive rod 3. One end of the threaded sleeve 301 is fixed to the top of the housing 1, and the connection between the threaded sleeve 301 and the drive rod 3 is provided with meshing threads. By organically cooperating with the threaded sleeve 301 and the drive rod 3, the drive rod 3 can be positioned relative to the housing 1, so as to facilitate the control of the relative position of the trapezoidal block 103 relative to the wedge block 101 and prevent accidental opening of the sampling cylinder 2.

[0021] One end of the drive rod 3, which is inserted into the housing 1, is rotatably connected to the trapezoidal block 103 via a bearing. The drive rod 3 can rotate smoothly relative to the trapezoidal block 103 through the bearing, and the trapezoidal block 103 and the wedge block 101 can maintain a stable fit.

[0022] The threaded sleeve 301 has a handle 3011 on both sides of the top, and the drive rod 3 has a handle 302 on the top. The handle 302 has a positioning pin 3021 inside, and the handle 3011 has a hole that matches the positioning pin 3021. The handle 3011 facilitates gripping the threaded sleeve 301. During sampling, pressure can be applied to the handle 3011 to insert the sampling tube 2 into the riverbed, thereby collecting deep sediment. The handle 302 can also be used for gripping. At the same time, the handle 3011 and the handle 302 can be rotated to overlap, and are positioned by the positioning pin 3021 to position the relative position of the drive rod 3 and the threaded sleeve 301, preventing accidental opening of the sampling tube 2.

[0023] Both sides of the bottom of the housing 1 are provided with strip-shaped holes, and the bottom of the wedge 101 is provided with a rectangular protrusion, which penetrates the strip-shaped holes at the bottom of the housing 1. The wedge block 101 is positioned and guided by the star pattern, thereby achieving precise docking of the two sampling cylinders 2.

[0024] The wedge block 101 and the trapezoidal block 103 are in sliding fit through an inclined surface; Two wedges 101 are respectively attached to the two inclined surfaces of the trapezoidal block 103, so that the movement of the two wedges 101 is synchronized. At the same time, two springs 102 squeeze the two wedges 101 respectively, and when the drive rod 3 moves upward, the sampling cylinder 2 is in a good closed state.

[0025] Both sampling cylinders 2 are attached to the bottom of the housing 1, and the end of the sampling cylinder 2 is provided with a screw cap 202; The sampling tube 2 is guided and limited by the bottom surface of the shell 1, which further realizes the accurate positioning of the sampling tube 2. The activity space of the sampling tube 2 is further reduced, which is conducive to the precise docking of the two sampling tubes 2. The screw cap 202 allows the cavity between the diaphragm 201 and the screw cap 202 to be easily opened. When the mud and sand sample is difficult to remove, after unscrewing the screw cap 202, the external rod structure can be inserted into the sampling tube 2 to vibrate the diaphragm 201, thus facilitating the discharge of the sample. Due to the presence of the diaphragm 201, the sample will not be contaminated by the outside world, making it more convenient and worry-free to use.

[0026] A guide plate 203 is provided at the edge of the opening of the sampling cylinder 2, and the angle between the guide plate 203 and the sampling cylinder 2 is 90°. The guide plate 203 is used to guide the sample when pouring the sample into the sampling cylinder 2, so as to reduce the liquid flow to the outer circumference of the sampling cylinder 2 and reduce sample waste.

[0027] The sum of the axial lengths of the two sampling cylinders 2 is the same as the width of the shell 1; Both sampling tubes 2 have arc-shaped outer surfaces, which facilitates insertion into the silt in the riverbed. The size of the sampling tube 2 is the same as that of the shell 1. When inserted into the deep riverbed, the silt in the shallow riverbed collapses and falls on the top of the shell 1 without affecting the sampling tube 2, thus obtaining more accurate samples.

[0028] A baffle 104 is provided at the bottom of the housing 1; The baffle 104 reduces the direct impact of water flow on the opening of the sampling tube 2, thereby better achieving the closure of the two sampling tubes 2.

Claims

1. A river sediment sampling device, characterized in that, The sample includes a housing (1) and a sampling tube (2). The bottom of the housing (1) is slidably connected to two sampling tubes (2) with opposite openings. The inside of the housing (1) is provided with a wedge (101). A spring (102) is provided between the wedge (101) and the inner wall of the housing (1). A trapezoidal block (103) is provided between the two wedges (101). The inside of the sampling tube (2) is provided with a diaphragm (201) that divides its internal cavity into two. The top of the housing (1) is provided with a driving assembly for driving the trapezoidal block (103) to move along the vertical line of the housing (1). The driving assembly includes a driving rod (3). The driving rod (3) passes through the center of the top of the housing (1). One end of the driving rod (3) is connected to the top of the trapezoidal block (103).

2. The river sediment sampling device according to claim 1, characterized in that: The drive assembly also includes a threaded sleeve (301), which is sleeved on the outside of the drive rod (3). One end of the threaded sleeve (301) is fixed to the top of the housing (1), and the connection between the threaded sleeve (301) and the drive rod (3) is provided with meshing threads.

3. The river sediment sampling device according to claim 2, characterized in that: The drive rod (3) is inserted into the housing (1) at one end and is rotatably connected to the trapezoidal block (103) through a bearing.

4. The river sediment sampling device according to claim 3, characterized in that: The threaded sleeve (301) has a handle 1 (3011) on both sides of the top, and the drive rod (3) has a handle 2 (302) on the top. The handle 2 (302) has a positioning pin (3021) inside, and the handle 1 (3011) has a hole that matches the positioning pin (3021).

5. The river sediment sampling device according to claim 1, characterized in that: The bottom of the housing (1) is provided with strip-shaped holes on both sides, and the bottom of the wedge (101) is provided with a rectangular protrusion. The bottom protrusion of the wedge (101) penetrates the strip-shaped hole at the bottom of the housing (1).

6. The river sediment sampling device according to claim 1, characterized in that: The wedge (101) and the trapezoidal block (103) are in sliding engagement via inclined surfaces.

7. The river sediment sampling device according to claim 1, characterized in that: Both sampling tubes (2) are attached to the bottom of the housing (1), and the ends of the sampling tubes (2) are provided with screw caps (202).

8. The river sediment sampling device according to claim 1, characterized in that: The sampling tube (2) has a guide plate (203) at the edge of its opening, and the angle between the guide plate (203) and the sampling tube (2) is 90°.

9. The river sediment sampling device according to claim 1, characterized in that: The sum of the axial lengths of the two sampling cylinders (2) is the same as the width of the shell (1).

10. The river sediment sampling device according to claim 1, characterized in that: A baffle (104) is provided at the bottom of the housing (1).

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