River benthos sampling and analyzing device

Abstract

The utility model discloses a river benthos sampling and analyzing device, and relates to the technical field of sampling devices. The sampling and analyzing assembly is used for sampling excreted sediments of river benthos, and the sampling and analyzing assembly comprises a sampling cylinder and a balancing weight fixedly arranged at the bottom end of the sampling cylinder; and the lifting assembly is used for automatically lifting the sampling analysis assembly. According to the river benthic organism sampling and analyzing device disclosed by the utility model, the sampling and analyzing component is arranged, so that when the device is used for sampling excrement of river benthic organisms, the aim of automatically sampling the excrement of the river benthic organisms is fulfilled, and in the sampling process, the excrement of the river benthic organisms can be automatically sampled. The rotation of the small motor can drive three L-shaped rods and bristles to stir the river bottom, so that excrement around the bottom end of the sampling barrel can be raised and is sucked into the sampling barrel, the purpose of sampling the periphery of the sampling barrel in a large range is achieved, and the sampling sufficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of sampling device technology, and in particular to a sampling and analysis device for river benthic organisms. Background Technology

[0002] River benthic organisms are sensitive indicator species of water health and pollution levels; the heavy metal content in their bodies can reflect the pollution status of water bodies, and the heavy metal content in their excrement is closely related to the amount of heavy metals accumulated in their bodies. Studies have shown that the accumulation of heavy metals in benthic organisms is directly related to their content in their excrement.

[0003] Therefore, when detecting biological pollution, it is necessary to sample and analyze the sludge from the excrement of river benthic organisms. A commonly used sampling device is the bucket sampler, which mainly consists of a box assembly, a bucket assembly, a sheave assembly, a balance beam, and a hook assembly. In operation, two anchor chains on the bucket assembly, used to open the bucket, are attached to the hook. The sampler is then quickly lowered into the intended seabed or underwater sediment using ropes or wire ropes. As the wire rope is lowered, the anchor chains disengage from the hook, releasing the bucket. When the sampler is pulled back up, the wire rope on the balance beam closes the two buckets, completing the sediment sampling. This process requires manual operation, which is very strenuous due to the weight of the two buckets. Furthermore, the sampling range is limited to the angle between the two buckets, resulting in a limited sampling area. Therefore, this application proposes a river benthic organism sampling and analysis device. Utility Model Content

[0004] This utility model discloses a river benthic organism sampling and analysis device, which aims to solve the technical problems of laborious operation and limited sampling range mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sampling and analysis device for river benthic organisms includes:

[0007] Mounting bracket, which is mounted on the ship's railing;

[0008] A sampling and analysis component is used to sample the excrement sediments of river benthic organisms. The sampling and analysis component includes a sampling tube and a counterweight fixed at the bottom of the sampling tube. The outer surface of the bottom of the sampling tube has several feed inlets in a circular pattern. A partition is fixed on the inner wall of the sampling tube. A feed pipe extending to the lower surface of the partition is embedded on the upper surface of the partition. A one-way valve for feeding is provided on the surface of the feed pipe. A sealing piston is slidably arranged on the inner wall of the sampling tube. A waterproof air pump for driving the sealing piston to move up and down is fixed on the top of the sampling tube.

[0009] A lifting assembly for automatically lifting a sampling analysis assembly includes a drive motor fixed to the side of a mounting frame. The output end of the drive motor extends into the interior of the mounting frame and is fixedly mounted on a take-up reel. A pull rope is wound inside the take-up reel, and the end of the pull rope away from the take-up reel is fixedly connected to the surface of a waterproof air pump.

[0010] In a preferred embodiment, the inner wall of the sampling tube above the partition is fitted with a discharge pipe extending to the outer surface of the sampling tube, and the surface of the discharge pipe is provided with a discharge valve.

[0011] By setting up a discharge pipe, the discharge valve can be opened to facilitate the discharge of the sample after sampling.

[0012] In a preferred embodiment, the suction end of the waterproof air pump extends into the interior of the sampling tube, and an inductively coupled plasma mass spectrometry sensor is fixedly mounted on the inner wall of the sampling tube above the partition. The inductively coupled plasma mass spectrometry sensor is an Anjie ICP-MS 7850.

[0013] By setting up an inductively coupled plasma mass spectrometry sensor, it is possible to automatically detect heavy metal elements in river benthic organism excrement samples inside the sampling tube.

[0014] In a preferred embodiment, a heavy metal analyzer is fixedly mounted on the upper surface of the mounting bracket. The heavy metal analyzer is of model JC-ZJS-X. The heavy metal analyzer is electrically connected to an inductively coupled plasma mass spectrometer sensor via a wire, and a controller is fixedly mounted on the side of the mounting bracket.

[0015] By setting up a heavy metal analyzer, it is convenient to display the heavy metal content detected by the inductively coupled plasma mass spectrometry sensor.

[0016] In a preferred embodiment, the bottom end of the counterweight is fixed with a plurality of positioning cones in a circumferential array, and the material of the counterweight is iron.

[0017] By setting counterweights and positioning cones, the sampling tube can be vertically positioned at the bottom of the river.

[0018] In a preferred embodiment, the counterweight has an annular cavity inside, and the inner top wall of the annular cavity has an annular opening. A rotating ring is rotatably mounted on the inner wall of the annular opening. Three L-shaped rods are fixedly mounted in a circumferential array on the top of the rotating ring, and brush bristles are fixedly mounted on the surface of each of the three L-shaped rods.

[0019] By setting up L-shaped rods and brushes, the rotation of the rotating ring can drive the brushes on the three L-shaped rods to agitate the biological excrement at the bottom of the river, facilitating large-scale sampling.

[0020] In a preferred embodiment, a small motor is fixed to the inner top wall of the annular cavity, and a first toothed disc is fixed to the output end of the small motor. A second toothed ring that meshes with the first toothed disc is fixed to the outer annular surface of the rotating ring.

[0021] By setting up a small motor, the rotating ring can be driven to rotate automatically through the rotation of the small motor.

[0022] As can be seen from the above, the river benthic organism sampling and analysis device provided by this utility model has the following technical effects.

[0023] Firstly, by setting up a lifting component, this utility model enables the sampling tube to sink rapidly under the action of the counterweight during actual use. Once the counterweight sinks to the bottom of the water for sampling, the drive motor can be started to reverse, thereby driving the winding reel to wind up the pull rope, achieving the purpose of automatically recovering the sampling tube, which provides great convenience for sampling personnel.

[0024] Secondly, by setting up a sampling and analysis component, this utility model enables the device to automatically sample the excrement of river benthic organisms. During the sampling process, the rotation of a small motor drives three L-shaped rods and brushes to agitate the riverbed, causing the excrement located around the bottom of the sampling tube to be lifted and sucked into the sampling tube. This achieves the purpose of sampling a wide area around the sampling tube, improving the sufficiency of the sampling. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of a river benthic organism sampling and analysis device proposed in this utility model.

[0026] Figure 2 This is a rear view schematic diagram of a river benthic organism sampling and analysis device proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the cross-sectional structure of the sampling cylinder of this utility model.

[0028] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0029] In the attached image:

[0030] 100. Mounting bracket;

[0031] 200. Sampling and analysis assembly; 201. Sampling cylinder; 202. Counterweight; 203. Feed inlet; 204. Feed pipe; 205. Sealed piston; 206. Waterproof air pump; 207. Discharge pipe; 208. Inductively coupled plasma mass spectrometry sensor; 209. Heavy metal analyzer; 2010. Positioning cone; 2011. Rotating ring; 2012. L-shaped rod; 2013. Brush bristles; 2014. Small motor; 2015. First toothed disc; 2016. Second toothed ring;

[0032] 300. Lifting assembly; 301. Drive motor; 302. Rewind reel; 303. Pull rope;

[0033] 400. Controller. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0035] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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.

[0036] Reference Figures 1 to 4 A sampling and analysis device for river benthic organisms, comprising:

[0037] Mounting bracket 100 is installed on the ship's railing;

[0038] The sampling and analysis component 200 is used to sample the excrement sediments of river benthic organisms. The sampling and analysis component 200 includes a sampling cylinder 201 and a counterweight 202 fixed at the bottom end of the sampling cylinder 201. The outer surface of the bottom end of the sampling cylinder 201 is provided with a plurality of feed inlets 203 in a circular pattern. A partition is fixed on the inner wall of the sampling cylinder 201. A feed pipe 204 extending to the lower surface of the partition is embedded on the upper surface of the partition. A one-way valve for feeding is provided on the surface of the feed pipe 204. A sealing piston 205 is slidably arranged on the inner wall of the sampling cylinder 201. A waterproof air pump 206 for driving the sealing piston 205 to move up and down is fixed on the top of the sampling cylinder 201.

[0039] Reference Figure 4In a preferred embodiment, the inner wall of the sampling tube 201 above the partition is provided with a discharge pipe 207 extending to the outer surface of the sampling tube 201, and the surface of the discharge pipe 207 is provided with a discharge valve.

[0040] Specifically, by setting up the discharge pipe 207, the discharge valve can be opened to facilitate the discharge of the sample after sampling.

[0041] Reference Figure 4 In a preferred embodiment, the suction end of the waterproof air pump 206 extends into the interior of the sampling tube 201, and an inductively coupled plasma mass spectrometry sensor 208 is fixedly mounted on the inner wall of the sampling tube 201 above the partition. The inductively coupled plasma mass spectrometry sensor 208 is an Anjie ICP-MS 7850.

[0042] Specifically, by setting up an inductively coupled plasma mass spectrometry sensor 208, heavy metal elements in river benthic organism excrement samples inside the sampling tube 201 can be automatically detected.

[0043] Reference Figure 2 and Figure 4 In a preferred embodiment, a heavy metal analyzer 209 is fixed on the upper surface of the mounting bracket 100. The heavy metal analyzer 209 is of model JC-ZJS-X. The heavy metal analyzer 209 is electrically connected to an inductively coupled plasma mass spectrometer sensor 208 via a wire. A controller 400 is fixed on the side of the mounting bracket 100.

[0044] Specifically, by setting up a heavy metal analyzer 209, it is convenient to display the heavy metal content detected by the inductively coupled plasma mass spectrometry sensor 208.

[0045] Reference Figure 3 and Figure 4 In a preferred embodiment, the bottom end of the counterweight 202 is fixed with a plurality of positioning cones 2010 in a circumferential array, and the material of the counterweight 202 is iron.

[0046] Specifically, by setting the counterweight 202 and the positioning cone 2010, the sampling tube 201 can be vertically positioned at the bottom of the river.

[0047] Reference Figure 3 and Figure 4 In a preferred embodiment, the counterweight 202 has an annular cavity inside, and the inner top wall of the annular cavity has an annular opening. A rotating ring 2011 is rotatably arranged on the inner wall of the annular opening. Three L-shaped rods 2012 are fixedly arranged in a circular array on the top of the rotating ring 2011, and brush bristles 2013 are fixedly arranged on the surface of each of the three L-shaped rods 2012.

[0048] Specifically, by setting up L-shaped rods 2012 and brushes 2013, the rotation of the rotating ring 2011 can drive the brushes 2013 on the three L-shaped rods 2012 to stir up the biological excrement at the bottom of the river, which facilitates large-scale sampling.

[0049] Reference Figure 3 and Figure 4 In a preferred embodiment, a small motor 2014 is fixedly mounted on the inner top wall of the annular cavity, and a first toothed disc 2015 is fixedly mounted on the output end of the small motor 2014. A second toothed ring 2016 that meshes with the first toothed disc 2015 is fixedly mounted on the outer annular surface of the rotating ring 2011.

[0050] Specifically, by setting up a small motor 2014, the rotation of the small motor 2014 can drive the rotating ring 2011 to rotate automatically.

[0051] This invention, by incorporating a sampling and analysis component 200, enables the device to sample the excrement of river benthic organisms. Under the action of the counterweight 202 and the positioning cone 2010, the sampling cylinder 201 is vertically inserted into the riverbed. Simultaneously, a waterproof air pump 206 and a small motor 2014 are activated. The waterproof air pump 206 extracts air from inside the sampling cylinder 201, thereby moving the sealing piston 205 upwards. This allows the excrement of the river benthic organisms to enter the sampling cylinder 201 through the inlet 203 and the feed pipe 204, achieving automatic sampling of the excrement. Furthermore, during sampling... During the process, the rotation of the small motor 2014 drives the three L-shaped rods 2012 and the brush 2013 to stir the riverbed, causing the excrement located around the bottom of the sampling tube 201 to be lifted up and sucked into the sampling tube 201. This achieves the purpose of sampling a large area around the sampling tube 201, improving the sufficiency of sampling. At the same time, the excrement inside the sampling tube 201 can be detected for heavy metal elements under the action of the inductively coupled plasma mass spectrometry sensor 208, and the results are displayed by the heavy metal analyzer 209, thus achieving the purpose of sampling and analyzing the excrement of river benthic organisms.

[0052] The lifting assembly 300 is used to automatically lift the sampling analysis assembly 200. The lifting assembly 300 includes a drive motor 301 fixed on the side of the mounting frame 100. The output end of the drive motor 301 extends into the interior of the mounting frame 100 and is fixedly provided with a take-up reel 302. A pull rope 303 is wound inside the take-up reel 302, and the end of the pull rope 303 away from the take-up reel 302 is fixedly connected to the surface of the waterproof air pump 206.

[0053] This invention, by setting up a lifting component 300, enables the device to be fixed to the ship's railing with wire during actual use. When sampling is required, the drive motor 301 can be started. The rotation of the drive motor 301 drives the winding reel 302 to quickly unload the pull rope 303, thereby enabling the sampling tube 201 to sink rapidly under the action of the counterweight 202 until the counterweight 202 sinks to the bottom of the water for sampling. After sampling is completed, the drive motor 301 can be started to reverse, thereby driving the winding reel 302 to wind up the pull rope 303, achieving the purpose of automatically recovering the sampling tube 201, providing great convenience for sampling personnel.

[0054] Working Principle: In actual use, the mounting frame 100 can be fixed to the railing of a ship using wire. When sampling is required, the drive motor 301 is activated. The rotation of the drive motor 301 drives the winding reel 302 to quickly release the pull rope 303, thereby enabling the sampling tube 201 to sink rapidly under the action of the counterweight 202. Once the counterweight 202 sinks to the bottom of the water for sampling, the sampling tube 201 is vertically inserted into the riverbed. Then, the waterproof air pump 206 and the small motor 2014 are activated simultaneously. The waterproof air pump 206 extracts the air from inside the sampling tube 201, thereby driving the sealing piston 205 to move upward, allowing the excrement of river benthic organisms to enter the interior of the sampling tube 201 through the feed inlet 203 and the feed pipe 204, achieving the purpose of automatic sampling of river benthic organism excrement. During the process, the rotation of the small motor 2014 drives the three L-shaped rods 2012 and the brush 2013 to stir the riverbed, causing the excrement located around the bottom of the sampling tube 201 to be lifted and sucked into the sampling tube 201. This achieves the purpose of sampling a large area around the sampling tube 201, improving the sufficiency of sampling. At the same time, the excrement inside the sampling tube 201 can be detected by the inductively coupled plasma mass spectrometry sensor 208 to detect the heavy metal elements contained inside, and the results are displayed by the heavy metal analyzer 209. This achieves the purpose of sampling and analyzing the excrement of river benthic organisms. After sampling is completed, the drive motor 301 can be started to reverse, thereby driving the winding reel 302 to wind up the pull rope 303, achieving the purpose of automatically recovering the sampling tube 201, which provides great convenience for sampling personnel.

[0055] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A sampling and analysis device for river benthic organisms, characterized in that, include: Mounting bracket (100) is mounted on the ship's railing; A sampling analysis component (200) is used to sample the excrement sediments of river benthic organisms. The sampling analysis component (200) includes a sampling tube (201) and a counterweight (202) fixed at the bottom end of the sampling tube (201). The outer surface of the bottom end of the sampling tube (201) is provided with several feed inlets (203) in a circular pattern. A partition is fixed on the inner wall of the sampling tube (201). A feed pipe (204) extending to the lower surface of the partition is embedded on the upper surface of the partition. A one-way valve for feeding is provided on the surface of the feed pipe (204). A sealing piston (205) is slidably provided on the inner wall of the sampling tube (201). A waterproof air pump (206) for driving the sealing piston (205) to move up and down is fixed on the top of the sampling tube (201). A lifting assembly (300) is used to automatically lift the sampling analysis assembly (200). The lifting assembly (300) includes a drive motor (301) fixed to the side of the mounting frame (100). The output end of the drive motor (301) extends into the interior of the mounting frame (100) and is fixedly provided with a take-up reel (302). A pull rope (303) is wound inside the take-up reel (302), and the end of the pull rope (303) away from the take-up reel (302) is fixedly connected to the surface of the waterproof air pump (206).

2. The river benthic organism sampling and analysis device according to claim 1, characterized in that, The sampling tube (201) is provided with a discharge pipe (207) extending to the outer surface of the sampling tube (201) on the inner wall above the partition, and a discharge valve is provided on the surface of the discharge pipe (207).

3. The river benthic organism sampling and analysis device according to claim 1, characterized in that, The suction end of the waterproof air pump (206) extends into the interior of the sampling tube (201), and an inductively coupled plasma mass spectrometry sensor (208) is fixed on the inner wall of the sampling tube (201) above the partition. The model of the inductively coupled plasma mass spectrometry sensor (208) is Anjie ICP-MS 7850.

4. The river benthic organism sampling and analysis device according to claim 1, characterized in that, A heavy metal analyzer (209) is fixed on the upper surface of the mounting bracket (100). The heavy metal analyzer (209) is of model JC-ZJS-X. The heavy metal analyzer (209) is electrically connected to an inductively coupled plasma mass spectrometer (208) via a wire. A controller (400) is fixed on the side of the mounting bracket (100).

5. The river benthic organism sampling and analysis device according to claim 1, characterized in that, The bottom end of the counterweight (202) is fixed with several positioning cones (2010) in a circular array, and the material of the counterweight (202) is iron.

6. The river benthic organism sampling and analysis device according to claim 1, characterized in that, The counterweight (202) has an annular cavity inside, and the inner top wall of the annular cavity has an annular opening. A rotating ring (2011) is rotatably arranged on the inner wall of the annular opening. Three L-shaped rods (2012) are fixedly arranged in a circular array on the top of the rotating ring (2011), and bristles (2013) are fixedly arranged on the surface of each of the three L-shaped rods (2012).

7. The river benthic organism sampling and analysis device according to claim 6, characterized in that, A small motor (2014) is fixedly mounted on the inner top wall of the annular cavity, and a first toothed disc (2015) is fixedly mounted on the output end of the small motor (2014). A second toothed ring (2016) that meshes with the first toothed disc (2015) is fixedly mounted on the outer annular surface of the rotating ring (2011).

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