River sediment sampling device

Abstract

The river sediment sampling device comprises a container, a baffle, a first rod body and a second rod body, an opening of the container faces upwards, the baffle is arranged at the position, corresponding to the opening, of the upper side of the container, the lower end of the first rod body is fixedly connected with the baffle, and the second rod body is arranged on the baffle in an up-down sliding mode. The lower end of the second rod is fixedly connected with a container. In the process that the container is downwards inserted into river bottom mud and the process that the container is upwards pulled out of river water, the baffle can keep the opening in the container in a closed state, and the river water does not easily enter the container. When the river bottom mud sampling device disclosed by the utility model is used for sampling river bottom mud, the possibility that the river bottom mud collected in the container is diluted by river water can be reduced, and the possibility that the accuracy of a detection result is influenced can be further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices, in particular to a river bottom mud sampling device. Background Art

[0002] The analysis of water sediment is a very important process. Sediments in water bodies are commonly known as sediments, which are an important part of water body research. Sediment is an important part of aquatic ecosystems. The biological community, chemical composition, chemical state, especially the redox state of sediments directly affect the self-purification capacity of rivers and the water quality of overlying water bodies.

[0003] Currently, a river sediment sampler is used when sampling river sediment. When the river sediment sampler is immersed in the river water for sampling, a large amount of river water will be mixed into the obtained river sediment sample, causing the obtained river sediment to be diluted, which in turn affects the accuracy of the test results. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a river sediment sampling device to solve the problem that when the existing river sediment sampler is immersed in river water for sampling, a large amount of river water will be mixed into the river sediment sample obtained, resulting in the dilution of the obtained river sediment, which will affect the accuracy of the detection result.

[0005] The utility model is realized by the following technical solutions:

[0006] A river sediment sampling device comprises a container, a baffle, a first rod and a second rod. The opening of the container faces upward, the baffle is arranged on the upper side of the container at a position corresponding to the opening, the lower end of the first rod is fixedly connected to the baffle, the second rod can be slidably arranged on the baffle up and down, and the lower end of the second rod is fixedly connected to the container.

[0007] It is further defined that the baffle is provided with a first through hole, the first through hole passes through the upper and lower sides of the baffle, the second rod body is slidably fitted in the first through hole, and the lower end of the second rod body passes through the first through hole and is fixedly connected to the container.

[0008] It is further defined that a channel is formed on the first rod body, the channel passes through the upper and lower end surfaces of the first rod body, the channel is directly opposite to the first through hole, the second rod body slides in the first through hole and the channel, and the upper end of the second rod body protrudes out of the first rod body.

[0009] It is further defined that it also includes a limit plate and a coil spring, the limit plate is fixedly connected to the upper end of the second rod body, the coil spring is sleeved on the second rod body, and the upper and lower ends of the coil spring are respectively abutted against the lower side surface of the limit plate and the upper end surface of the first rod body.

[0010] It is further defined that it also includes a connecting plate, which is fixedly connected to the lower end of the second rod body, and the container is fixedly connected to the connecting plate. A second through hole is formed on the connecting plate, and the lower end of the second through hole is connected to the inner cavity of the container, and the upper end is connected to the upper surface of the connecting plate.

[0011] It is further defined that the connecting plate is circular, the outer peripheral surface of the connecting plate is provided with external threads, the container is a cylindrical structure with an open upper end and a closed lower end, the upper end of the inner wall of the container is provided with internal threads, and the container is threadedly connected to the connecting plate.

[0012] It is further defined that it also includes a sealing ring, which is fixedly connected to the lower surface of the baffle plate, and the sealing ring is used to seal the gap between the upper end of the container and the baffle plate.

[0013] It is further defined that it also includes a sleeve, a drain pipe and a one-way valve, the upper end of the sleeve is fixedly connected to the lower side of the baffle, the sleeve is arranged around the container, and a accommodating space is formed between the inner surface of the sleeve and the outer surface of the container, a third through hole is formed on the baffle, the lower end of the third through hole is connected to the accommodating space, the lower end of the drain pipe is fixedly connected to the upper side of the baffle at a position corresponding to the third through hole, and the one-way valve is arranged on the drain pipe, and the one-way valve is used to supply water from the lower end of the drain pipe to the upper end of the drain pipe.

[0014] The beneficial effects of the utility model are:

[0015] In the river sediment sampling device described in the utility model, during the process of inserting the container downward into the river sediment, and during the process of pulling the container upward out of the river water, the baffle can keep the opening on the container closed, and river water is not easy to enter the container. When the baffle and the container are in a state of being fully inserted into the river sediment, the container is located at a certain depth below the surface of the river sediment, and during the process of the river sediment entering the container from the opening of the container, the river water on the upper side of the river sediment is not easy to enter the container. When the river sediment sampling device described in the utility model is used to sample river sediment, the possibility of the river sediment collected in the container being diluted by river water can be reduced, thereby reducing the possibility of the accuracy of the detection result being affected.

[0016] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 for Figure 2 Enlarged view at A in the middle;

[0020] Figure 4 This is a schematic diagram of the combined structure of the container and the connecting plate of the utility model.

[0021] In the figure: 1, container; 2, baffle; 3, first rod body; 4, second rod body; 5, first through hole; 6, channel; 7, limit plate; 8, coil spring; 9, connecting plate; 10, second through hole; 11, sealing ring; 12, sleeve; 13, drain pipe; 14, one-way valve; 15, third through hole; DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0027] See also Figure 1-Figure 3 The utility model provides a technical solution: a river sediment sampling device, comprising a container 1, a baffle 2, a first rod 3 and a second rod 4, the opening of the container 1 faces upward, the baffle 2 is arranged on the upper side of the container 1 at a position corresponding to the opening, the lower end of the first rod 3 is fixedly connected to the baffle 2, the second rod 4 can be slidably arranged on the baffle 2 up and down, and the lower end of the second rod 4 is fixedly connected to the container 1.

[0028] When the river sediment sampling device of the utility model is in an initial state, the upper end of the container 1 abuts against the lower side of the baffle 2 , and the opening of the container 1 is closed by the baffle 2 .

[0029] The river bottom mud sampling device described in the utility model is mainly used to collect river bottom mud which is soft and fluid.

[0030] When using the river sediment sampling device of the utility model to sample river sediment, the staff holds the first rod 3 and the second rod 4, and pushes the container 1 and the baffle 2 toward the river bottom until the container 1 and the baffle 2 are completely inserted into the river sediment. At this time, the container 1 is located at a certain depth below the surface of the river sediment. Then, the first rod 3 is kept stationary and the second rod 4 is pushed downward, so that the lower end of the second rod 4 slides downward relative to the baffle 2. The second rod 4 can push the container 1 to move downward relative to the baffle 2, and the upper end of the container 1 can be separated from the lower side of the baffle 2 to release the closure of the baffle 2 to the opening, and the river sediment around the container 1 can flow into the container 1 through the opening at the upper end of the container 1 for collection. After a certain amount of river sediment is in the container 1, the second rod 4 is pulled upward so that the lower end of the second rod 4 slides upward relative to the baffle 2, and the container 1 can be pulled upward by the second rod 4 until the upper end of the container 1 again abuts against the lower side of the baffle 2. At this time, the baffle 2 recloses the opening of the upper end of the container 1, and the river sediment sampling device of the utility model is restored to the above-mentioned initial state. Then the first rod 3 and the second rod 4 are pulled upward to remove the container 1 and the baffle 2 from the river, and the sampling of the river sediment is completed. With this structure, in the process of inserting the container 1 downward into the river sediment and in the process of pulling the container 1 upward from the river water, the baffle 2 can keep the opening on the container 1 closed. In the process of inserting the container 1 downward into the river sediment and in the process of pulling the container 1 upward from the river water, it is not easy for river water to enter the container 1. When the baffle 2 and the container 1 are completely inserted into the river bottom mud, the container 1 is located at a certain depth below the surface of the river bottom mud, and in the process of the river bottom mud entering the container 1 from the opening of the container 1, the river water on the upper side of the river bottom mud is not easy to enter the container 1. When the river bottom mud sampling device of the utility model is used to sample the river bottom mud, the possibility of the river bottom mud collected in the container 1 being diluted by the river water can be reduced, thereby reducing the possibility of the accuracy of the detection result being affected.

[0031] In this embodiment, the baffle plate 2 is provided with a first through hole 5, the first through hole 5 passes through the upper and lower sides of the baffle plate 2, the second rod body 4 is slidably fitted in the first through hole 5, and the lower end of the second rod body 4 passes through the first through hole 5 and is fixedly connected to the container 1. With this structure, the second rod body 4 can be slidably arranged on the baffle plate 2 up and down.

[0032] In this embodiment, a channel 6 is formed on the first rod body 3, and the channel 6 passes through the upper and lower end surfaces of the first rod body 3. The channel 6 is opposite to the first through hole 5. The second rod body 4 is slidably fitted in the first through hole 5 and the channel 6, and the upper end of the second rod body 4 protrudes outside the first rod body 3.

[0033] With this structure, when the second rod body 4 slides upward or downward, the first through hole 5 and the channel 6 can both guide the sliding of the second rod body 4, thereby improving the stability of the second rod body 4 when sliding up and down. The second rod body 4 is located inside the first rod body 3, so that the river sediment sampling device of the utility model has a better compact structure.

[0034] In this embodiment, the river sediment sampling device described in the utility model also includes a limit plate 7 and a coil spring 8, the limit plate 7 is fixedly connected to the upper end of the second rod body 4, the coil spring 8 is sleeved on the second rod body 4, and the upper and lower ends of the coil spring 8 are respectively abutted against the lower side surface of the limit plate 7 and the upper end surface of the first rod body 3.

[0035] When the river sediment sampling device described in the utility model is in the initial state, the upper end of the container 1 abuts against the lower side surface of the baffle 2. Since the upper and lower ends of the coil spring 8 respectively abut against the lower side surface of the limiting plate 7 and the upper end surface of the first rod body 3, the coil spring 8 can provide an upward thrust to the limiting plate 7, so that the limiting plate 7 can provide an upward pulling force to the second rod body 4, and then the second rod body 4 can provide an upward pulling force to the container 1. Under the pulling force of the second rod body 4 on the container 1, the upper end of the container 1 can maintain a state of being relatively tightly abutted against the baffle 2, and no manpower is required to keep the upper end of the container 1 abutted against the baffle 2, making the river sediment sampling device described in the utility model more convenient to use.

[0036] When it is necessary to open the opening of the container 1 for river sediment sampling, the first rod 3 is kept stationary, and a downward pressure is applied to the limit plate 7 to make the second rod 4 slide downward and compress the coil spring 8. During this process, the container 1 can move downward with the second rod 4 and disengage from the baffle 2 to release the baffle 2 from closing the opening.

[0037] After a certain amount of river sediment enters the container 1 from the opening of the container 1, the pressure on the limit plate 7 is canceled, the coil spring 8 is elastically reset and pushes the limit plate 7 upward, the limit plate 7 drives the second rod 4 to move upward, and the second rod 4 pulls the container 1 upward so that the upper end of the container 1 moves upward to re-abut against the lower side of the baffle 2. At this time, the opening of the container 1 is closed by the baffle 2 again, and the river sediment sampling device described in the utility model is restored to the above-mentioned initial state. After a certain amount of river sediment enters the container 1 from the opening of the container 1, it is only necessary to cancel the pressure on the limit plate 7, and the baffle 2 can re-block the opening of the container 1, making the river sediment sampling device described in the utility model more convenient to use.

[0038] In this embodiment, please refer to Figure 4 The river sediment sampling device of the utility model further comprises a connecting plate 9, which is fixedly connected to the lower end of the second rod 4, and the container 1 is fixedly connected to the connecting plate 9. A second through hole 10 is formed on the connecting plate 9, and the lower end of the second through hole 10 is connected to the inner cavity of the container 1, and the upper end is connected to the upper surface of the connecting plate 9. With this structure, the lower end of the second rod 4 can be fixedly connected to the container 1. After the blocking of the opening by the baffle 2 is released, the river sediment can flow into the container 1 from the second through hole 10.

[0039] In this embodiment, please refer to Figure 4 The connecting plate 9 is circular, and an external thread is provided on the outer peripheral surface of the connecting plate 9. The container 1 is a cylindrical structure with an open upper end and a closed lower end. An internal thread is provided on the upper end of the inner wall of the container 1, and the container 1 is threadedly connected to the connecting plate 9.

[0040] Since the container 1 is fixedly connected to the connecting plate 9 by threaded connection, the container 1 can be rotated on the connecting plate 9 to unscrew the container 1 from the connecting plate 9, that is, the container 1 can be removed from the connecting plate 9. After the container 1 and the baffle 2 are removed from the river, that is, after the sampling is completed, the container 1 is removed from the connecting plate 9, and the river bottom mud contained in the container 1 can be directly sent for inspection without transferring the river bottom mud in the container 1 to other equipment for inspection, which is more convenient when sending the river bottom mud for inspection.

[0041] In this embodiment, the river sediment sampling device described in the utility model further includes a sealing ring 11 , which is fixedly connected to the lower surface of the baffle 2 , and is used to seal the gap between the upper end of the container 1 and the baffle 2 .

[0042] The sealing ring 11 is made of soft elastic rubber. After the upper end of the container 1 abuts against the lower surface of the sealing ring 11, the sealing ring 11 can seal the gap between the upper end of the container 1 and the baffle 2, and when the baffle 2 and the container 1 are in the river water, the river water entering the container 1 can be further reduced.

[0043] In this embodiment, the river sediment sampling device described in the utility model also includes a sleeve 12, a drain pipe 13 and a one-way valve 14. The upper end of the sleeve 12 is fixedly connected to the lower side surface of the baffle 2. The sleeve 12 is arranged around the container 1. A accommodating space is formed between the inner surface of the sleeve 12 and the outer surface of the container 1. A third through hole 15 is formed on the baffle 2. The lower end of the third through hole 15 is connected to the accommodating space. The lower end of the drain pipe 13 is fixedly connected to the upper side surface of the baffle 2 corresponding to the position of the third through hole 15. The one-way valve 14 is arranged on the drain pipe 13. The one-way valve 14 is used to supply water from the lower end of the drain pipe 13 to the upper end of the drain pipe 13.

[0044] When the container 1, the sleeve 12 and the baffle 2 are immersed in the river, the river water enters the accommodation space. When the container 1 and the sleeve 12 are inserted into the river bottom mud, the river bottom mud enters the accommodation space from the lower end of the accommodation space, and the river bottom mud entering the accommodation space squeezes the river water in the accommodation space, so that the river water in the accommodation space is discharged from the third through hole 15 and the drain pipe 13. After the baffle 2 is also inserted into the river bottom mud to a certain depth, the river bottom mud can fill the entire accommodation space, and the river bottom mud can also fill the part of the drain pipe 13 located under the one-way valve 14. The river water in the accommodation space and the part of the drain pipe 13 located under the one-way valve 14 can be discharged. After the upper end of the container 1 is separated from the lower side of the baffle 2, part of the river bottom mud in the accommodation space can flow into the container 1. With this structure, after the baffle 2 is inserted into the river bottom mud, the sleeve 12 and the baffle 2 enclose the container 1 in the middle, which can better isolate the container 1 from the river water on the upper side of the river bottom mud, and can further reduce the possibility of the river water on the upper side of the river bottom mud flowing into the container 1.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A river sediment sampling device, characterized in that: The invention comprises a container (1), a baffle (2), a first rod (3) and a second rod (4); the opening of the container (1) faces upwards; the baffle (2) is arranged on the upper side of the container (1) at a position corresponding to the opening; the lower end of the first rod (3) is fixedly connected to the baffle (2); the second rod (4) is slidably arranged on the baffle (2) up and down; and the lower end of the second rod (4) is fixedly connected to the container (1).

2. The river sediment sampling device according to claim 1, characterized in that: The baffle plate (2) is provided with a first through hole (5), the first through hole (5) passes through the upper and lower side surfaces of the baffle plate (2), the second rod body (4) is slidably fitted in the first through hole (5), and the lower end of the second rod body (4) passes through the first through hole (5) and is fixedly connected to the container (1).

3. The river sediment sampling device according to claim 2, characterized in that: A hole (6) is formed on the first rod body (3), and the hole (6) passes through the upper and lower end surfaces of the first rod body (3). The hole (6) is opposite to the first through hole (5). The second rod body (4) is slidably fitted in the first through hole (5) and the hole (6), and the upper end of the second rod body (4) protrudes outside the first rod body (3).

4. The river sediment sampling device according to claim 1, characterized in that: It also comprises a limit plate (7) and a coil spring (8), wherein the limit plate (7) is fixedly connected to the upper end of the second rod body (4), the coil spring (8) is sleeved on the second rod body (4), and the upper and lower ends of the coil spring (8) are respectively abutted against the lower side surface of the limit plate (7) and the upper end surface of the first rod body (3).

5. The river sediment sampling device according to claim 1, characterized in that: The invention also comprises a connecting plate (9), wherein the connecting plate (9) is fixedly connected to the lower end of the second rod body (4), and the container (1) is fixedly connected to the connecting plate (9). A second through hole (10) is formed on the connecting plate (9), and the lower end of the second through hole (10) is connected to the inner cavity of the container (1), and the upper end of the second through hole (10) is connected to the upper surface of the connecting plate (9).

6. The river sediment sampling device according to claim 5, characterized in that: The connecting plate (9) is circular, and an outer peripheral surface of the connecting plate (9) is provided with an external thread. The container (1) is a cylindrical structure with an open upper end and a closed lower end. An internal thread is provided at the upper end of the inner wall of the container (1). The container (1) is threadedly connected to the connecting plate (9).

7. The river sediment sampling device according to claim 1, characterized in that: It also comprises a sealing ring (11), wherein the sealing ring (11) is fixedly connected to the lower surface of the baffle (2), and the sealing ring (11) is used to seal the gap between the upper end of the container (1) and the baffle (2).

8. The river sediment sampling device according to claim 1, characterized in that: The container also comprises a sleeve (12), a drain pipe (13) and a one-way valve (14); the upper end of the sleeve (12) is fixedly connected to the lower side of the baffle (2); the sleeve (12) is arranged around the container (1); a receiving space is formed between the inner surface of the sleeve (12) and the outer surface of the container (1); a third through hole (15) is formed on the baffle (2); the lower end of the third through hole (15) is connected to the receiving space; the lower end of the drain pipe (13) is fixedly connected to the upper side of the baffle (2) at a position corresponding to the third through hole (15); the one-way valve (14) is arranged on the drain pipe (13); the one-way valve (14) is used to supply water from the lower end of the drain pipe (13) to the upper end of the drain pipe (13).

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