A surface benthic organism and sediment sampling device

Abstract

The utility model discloses a kind of epifauna and sediment sampling devices, including sampling inlet, sampling inlet upper end connects sampling cylinder, sampling cylinder upper end connects elbow, elbow connects sedimentation zone;Sedimentation zone upper portion is equipped with water outlet, bottom is equipped with discharge port;Sampling cylinder is close to lower end and is provided with porous aeration pipe, porous aeration pipe connects air inlet pipe, air inlet pipe connects air blower.The utility model applies gas stripping principle, extracts epifauna and sediment in water body by the density difference inside and outside sampling device, overcome the conventional sampling device or rely on high degree of human engineering, efficiency is lower, or structure and operation are complex, sample is easily slipped, difficult to realize original sampling and other defects, can guarantee the integrity and fidelity of sample, more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of ecological environment sampling device technology, specifically to a sampling device for surface benthic organisms and sediments. Background Technology

[0002] With the reform of the ecological environment damage compensation system and the deepening of biodiversity protection, the need to evaluate benthic organisms and sediments is increasing. By comparing and analyzing the damage to benthic organisms and sediments, the current ecological environment status can be clarified, and sampling and testing are the primary steps.

[0003] Patent specification CN207300649U discloses a benthic organism collection device and river organism collection system, including: a gripping rod, a collection device, and a sieving device. The gripping rod is connected to the collection device, which is used to collect bottom sediment. The collection device can rotate relative to its hinged end to transport the collected bottom sediment to the sieving device, which filters the soil from the bottom sediment and retains the benthic organisms within it. By collecting the bottom sediment into the collection device, when the collection device is placed vertically, the sediment falls freely into the sieving device, which filters the soil and retains the benthic organisms. This alleviates the technical problems of cumbersome benthic organism grabbing and sieving processes in existing technologies, which hinder rapid grabbing and sieving of benthic organisms, and achieves the technical effect of rapid grabbing and sieving of benthic organisms. However, the above-mentioned patented technology requires the user to use the gripping rod to lift the entire device for operation, resulting in a high degree of manual dependence and low efficiency.

[0004] Compared to deep sediments, surface sediments are thinner, softer, and less dense. Furthermore, the distribution of benthic organisms in surface sediments is uneven. Conventional sampling devices either rely heavily on manual labor and are inefficient, or have complex structures and operations, making it easy for samples to slip and difficult to achieve undisturbed sampling. Utility Model Content

[0005] This invention provides a sampling device for surface benthic organisms and sediments, which overcomes the shortcomings of conventional sampling devices, such as high reliance on manual labor and low efficiency, or complex structure and operation, easy sample slippage, and difficulty in achieving undisturbed sampling. It can ensure the integrity and authenticity of the sample and is easy to use.

[0006] The specific technical solution is as follows:

[0007] A sampling device for surface benthic organisms and sediments includes a sampling inlet, an upper end of which is connected to a sampling tube, and an upper end of which is connected to an elbow, which is connected to a sedimentation zone; the sedimentation zone has a water outlet at the top and a material outlet at the bottom.

[0008] A porous aeration pipe is installed near the lower end of the sampling cylinder. The porous aeration pipe is connected to the air inlet pipe, which is connected to the blower.

[0009] When using the above-mentioned surface benthic organism and sediment sampling device, the sampling inlet is close to the surface benthic organisms and sediments. The blower is turned on, and air is aerated into the sampling cylinder through the air inlet pipe and the porous aeration pipe. During aeration, air and water rise simultaneously, forming a density difference with the surrounding water pressure. The surface benthic organisms and sediments rise to the liquid surface with the air bubbles and enter the sedimentation zone. Excess water in the sedimentation zone is discharged from the outlet. The benthic organisms and sediment samples after sedimentation in the sedimentation zone can be collected at the discharge port.

[0010] In some preferred embodiments, the sampling inlet of the surface benthic organism and sediment sampling device is funnel-shaped, with a smaller top and a larger bottom.

[0011] In some preferred embodiments, the sampling device for surface benthic organisms and sediments has a sampling inlet connected to a sampling tube via a threaded connection at the upper end, facilitating the disassembly and replacement of sampling inlets of different sizes.

[0012] In some preferred embodiments, the sampling tube of the surface benthic organism and sediment sampling device is a circular tube.

[0013] In some preferred embodiments, the sampling device for surface benthic organisms and sediments has an extension tube connected to an elbow at the upper end.

[0014] In some preferred embodiments, the sampling device for surface benthic organisms and sediments has an upper end of the sampling tube connected to an extended tube threadedly, and the length can be adjusted to match sampling tubes of different lengths according to different water depths.

[0015] In some preferred embodiments, the surface benthic organism and sediment sampling device has an elbow that is horizontally threaded to the sedimentation zone for easy disassembly.

[0016] In some preferred embodiments, the surface benthic organism and sediment sampling device has a cone-shaped sedimentation zone.

[0017] In some preferred embodiments, the surface benthic organism and sediment sampling device has an opening at the top of the sedimentation zone for gas exhaust.

[0018] In some preferred embodiments, the surface benthic organism and sediment sampling device has a porous aeration tube with multiple upward-facing aeration holes. More preferably, these aeration holes are evenly distributed around the center on the cross-section of the porous aeration tube to ensure uniform airlift effect, and the number is preferably three.

[0019] In some preferred embodiments, the surface benthic organism and sediment sampling device has a porous aeration pipe that is threadedly connected to an air inlet pipe, which facilitates disassembly and cleaning when the aeration holes of the porous aeration pipe become clogged.

[0020] In some preferred embodiments, the air inlet pipe of the surface benthic organism and sediment sampling device passes through the side wall of the sampling tube.

[0021] In some preferred embodiments, the air inlet pipe and the sidewall of the sampling tube of the surface benthic organism and sediment sampling device are welded.

[0022] In some preferred embodiments, the blower of the surface benthic organism and sediment sampling device is connected to the air intake pipe via a steel wire hose, which facilitates length adjustment.

[0023] In some preferred embodiments, the surface benthic organism and sediment sampling device has a rechargeable blower that can adjust the air pressure and air volume according to the water depth to adapt to different water depths and sample specific gravities.

[0024] In some preferred embodiments, the blower outlet of the surface benthic organism and sediment sampling device is positioned higher than the water outlet to prevent water from flowing back into the blower.

[0025] Compared with the prior art, the advantages of this utility model are as follows:

[0026] This invention utilizes the principle of air extraction to extract surface and benthic organisms and sediments from water bodies through the density difference inside and outside the sampling device. It overcomes the shortcomings of conventional sampling devices, such as high reliance on manual labor and low efficiency, or complex structure and operation, easy sample slippage, and difficulty in achieving undisturbed sampling. It can ensure the integrity and authenticity of the sample and is more convenient to use. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a surface benthic organism and sediment sampling device according to a specific embodiment;

[0028] In the diagram: 1-Sampling inlet, 2-Sampling cylinder, 3-Extended pipe, 4-Blower, 5-Air inlet pipe, 6-Porous aeration pipe, 7-Sedimentation zone, 8-Discharge outlet, 9-Water outlet, 10-Elbow, 11-Steel wire hose. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0030] In the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In this utility model, "connection" should be interpreted broadly, meaning it can be a direct connection or an indirect connection through one or more components or structures.

[0032] See Figure 1 A sampling device for surface benthic organisms and sediments includes a sampling system, an aeration system, and a sedimentation system. The sampling system includes a sampling inlet 1, a sampling cylinder 2, and an extension pipe 3. The aeration system includes a blower 4, an air inlet pipe 5, and a porous aeration pipe 6. The sedimentation system includes a sedimentation zone 7 and an outlet 8 and a water outlet 9. The sampling inlet 1 is funnel-shaped, wider at the bottom than the top, and its upper end is connected to the sampling cylinder 2. The sampling cylinder 2 is a circular tube, and its upper end is connected to the extension pipe 3. The upper end of the extension pipe 3 is connected to an elbow 10, which connects to the sedimentation zone 7. Specifically: the upper end of the sampling inlet 1 is threadedly connected to the sampling cylinder 2, facilitating disassembly and replacement of sampling inlets 1 of different sizes; the upper end of the sampling cylinder 2 is threadedly connected to the extension pipe 3, allowing for length adjustment to match different water depths; the extension pipe 3 is welded to the elbow 10, which is horizontally threadedly connected to the sedimentation zone 7 for easy disassembly. The sedimentation zone 7 is conical, with no top cover, where gas is discharged. A water outlet 9 is provided at the top of the sedimentation zone 7, and a material outlet 8 is provided at the bottom. A porous aeration pipe 6 is installed near the lower end inside the sampling cylinder 2. The porous aeration pipe 6 is connected to an air inlet pipe 5, which is connected to a steel wire hose 11. The steel wire hose 11 is connected to a blower 4 for easy length adjustment. In this embodiment, the porous aeration pipe 6 has three upward-facing aeration holes, which are evenly distributed around the center on the cross-section of the porous aeration pipe 6 to ensure uniform air lifting effect. The porous aeration pipe 6 is threadedly connected to the air inlet pipe 5, facilitating disassembly and cleaning when the aeration holes of the porous aeration pipe 6 become clogged. The air inlet pipe 5 passes through the side wall of the sampling cylinder 2 and is welded to the side wall of the sampling cylinder 2. In this embodiment, the blower 4 is rechargeable and can adjust the air pressure and air volume according to the water depth to adapt to different water depths and sample specific gravities. Furthermore, the air outlet of the blower 4 is positioned higher than the water outlet 9 to prevent water backflow into the blower 4.

[0033] When using the above-mentioned surface benthic organism and sediment sampling device, the sampling inlet 1 is close to the surface benthic organisms and sediments, the blower 4 is turned on, and air is aerated into the sampling cylinder 2 through the steel wire hose 11, the air inlet pipe 5 and the porous aeration pipe 6. During aeration, air and water rise simultaneously, forming a density difference with the surrounding water pressure. The surface benthic organisms and sediments rise to the liquid surface with the air bubbles and enter the sedimentation zone 7. Excess water in the sedimentation zone 7 is discharged from the outlet 9. The benthic organism and sediment samples after sedimentation in the sedimentation zone 7 can be collected at the discharge port 8.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Furthermore, it should be understood that after reading the above description of this utility model, those skilled in the art can make various alterations or modifications to this utility model, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A sampling device for surface benthic organisms and sediments, characterized in that, It includes a sampling inlet (1), the upper end of which is connected to a sampling tube (2), the upper end of which is connected to an elbow (10), and the elbow (10) is connected to a sedimentation zone (7); the sedimentation zone (7) has an outlet (9) at the top and a discharge outlet (8) at the bottom. A porous aeration pipe (6) is installed near the lower end inside the sampling tube (2). The porous aeration pipe (6) is connected to the air inlet pipe (5), and the air inlet pipe (5) is connected to the blower (4).

2. The surface benthic organism and sediment sampling device according to claim 1, characterized in that, The sampling inlet (1) is a funnel shape with a smaller top and a larger bottom.

3. The surface benthic organism and sediment sampling device according to claim 1, characterized in that, The upper end of the sampling inlet (1) is connected to the sampling tube (2) by a thread.

4. The surface benthic organism and sediment sampling device according to claim 1, characterized in that, The sampling tube (2) is a round tube.

5. The surface benthic organism and sediment sampling device according to claim 1, characterized in that, The upper end of the sampling tube (2) is connected to the elbow (10) through the extension tube (3); The upper end of the sampling tube (2) is connected to the extension tube (3) by a thread.

6. The surface benthic organism and sediment sampling device according to claim 1, characterized in that, The elbow (10) is horizontally threaded to the sedimentation zone (7).

7. The surface benthic organism and sediment sampling device according to claim 1, characterized in that, The sedimentation zone (7) is cone-shaped; The top opening of the sedimentation zone (7) is located.

8. The surface benthic organism and sediment sampling device according to claim 1, characterized in that, The porous aeration pipe (6) has multiple upward-facing aeration holes, which are evenly distributed around the center on the cross-section of the porous aeration pipe (6), and there are 3 such holes.

9. The surface benthic organism and sediment sampling device according to claim 1, characterized in that, The porous aeration pipe (6) is threadedly connected to the air inlet pipe (5); The air inlet pipe (5) passes through the side wall of the sampling tube (2); the air inlet pipe (5) and the side wall of the sampling tube (2) are welded together; The blower (4) is connected to the air inlet pipe (5) via a steel wire hose (11).

10. The surface benthic organism and sediment sampling device according to claim 1, characterized in that, The blower (4) is a rechargeable type, and the air pressure and air volume can be adjusted according to the water depth by frequency conversion. The air outlet of the blower (4) is higher than the water outlet (9).

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