A zooplankton sample collection device capable of distinguishing different water depths
By designing a zooplankton collection device with a depth sounder and a dual-axis motor, the problems of easy deviation of sampling positions, complex operation and limited sampling range in the prior art are solved, and more efficient and accurate zooplankton sample collection is achieved.
Patent Information
- Application Number
- CN202410542998.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-01
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2044-05-01
AI Technical Summary
The existing zooplankton collection devices are susceptible to water flow during use, resulting in offsetting the sampling position, complex operation and high cost, and the fixed rod limits the sampling range, affecting the quality of the sample.
A zooplankton collection device including a tooth ring seat, a depth sounder, a dual-axis motor and a sampling assembly was designed. The water depth was determined by the depth sounder. The dual-axis motor drove the water pump to collect water samples, reducing the dependence on water flow and the use of fixed rods.
The device improves the sampling range through a depth sounder, reducing operational complexity and cost, avoids sampling position offset, and improves sample quality and sampling efficiency.
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Figure CN118443381B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field related to zooplankton sample collection, and in particular to a zooplankton sample collection device capable of distinguishing different water depths. Background Art
[0002] Zooplankton, as an important component of lake ecosystems, plays a vital role in the material transformation process. Therefore, zooplankton is very important for ecological research, and zooplankton sample collection is an important part of the research. However, the existing zooplankton sample collection device that can distinguish different water depths still has certain defects when used, such as;
[0003] For example, a zooplankton collection device with publication number CN216567819U collects zooplankton in lakes by utilizing the phototaxis of zooplankton. At night, the length of the rope is adjusted according to the sampling water layer, the point light source is turned on, and the device is placed in the sampling water area. After a period of time, the device is lifted up, the device valve is opened, and the living zooplankton is collected. The float of the stabilizing device plays a role of suspension and stability, and the length of the water layer adjustment rope is adjusted to collect zooplankton in different water layers; the point light source of the trapping device is placed inside the collecting device to attract zooplankton; the net cover of the collecting device can prevent small fish from entering, and the net can filter phytoplankton and leave zooplankton. When the device is lifted up, the zooplankton is washed into the storage compartment by the water flow, and the zooplankton can be obtained by opening the valve.
[0004] However, the zooplankton collection device still has the following disadvantages during actual use:
[0005] After the device is placed in the sampling waters to collect plankton, it is salvaged after a period of time. In actual use, the device is easily affected by the water flow, causing the overall sampling position to shift, which will affect subsequent analysis and research. In addition, the overall placement and salvage require certain techniques and operations, which increases the complexity and cost of the operation;
[0006] For example, a zooplankton collection device and a zooplankton collection system with a publication number of CN207784049U include: a first fixed rod, a second fixed rod, a collection device, a conveying pipe and a collecting bag; the collection device is connected to the collecting bag through the conveying pipe, the side of the collection device away from the conveying pipe is connected to the side wall of the first fixed rod, the end of the collecting bag away from the conveying pipe is connected to the second fixed rod, the collection device is provided with a collection port, the first fixed rod and the second fixed rod are both inserted into the bottom mud so that the collection port extends below the horizontal plane; the collection device allows river zooplankton to enter the collecting bag through the conveying pipe through the collection port, the collecting bag is used to filter out river water to collect zooplankton, and by arranging the collection device, the conveying pipe and the collecting bag that are interconnected between the first fixed rod and the second fixed rod, the collection device conveys river zooplankton to the collecting bag through the conveying pipe, so that the zooplankton is collected in the collecting bag, which alleviates the technical problems of the traditional zooplankton collection method in the prior art, such as high labor intensity, time and labor consumption, limited suitable collection water area and low work efficiency, and achieves the technical effect of quickly collecting zooplankton and saving manpower.
[0007] However, the zooplankton collection device and the zooplankton collection system still have the following disadvantages during actual use:
[0008] Inserting both the first fixing rod and the second fixing rod into the bottom soil makes it convenient for the collection device to perform limited sampling. In actual use, the sampling point is limited by the length of the first fixing rod and the second fixing rod, so that the overall sampling range is limited and comprehensive plankton sampling cannot be performed. After the first fixing rod and the second fixing rod are inserted into the soil, the organisms inside the soil are easily disturbed, thereby affecting the accuracy of sampling and the quality of the sample.
[0009] In view of the above problems, it is urgently necessary to carry out innovative design based on the original zooplankton sample collection device that can distinguish different water depths. Therefore, we proposed a zooplankton sample collection device that can distinguish different water depths, which can solve the above problems well. Summary of the invention
[0010] The purpose of the present invention is to provide a zooplankton sample collection device that can distinguish different water depths, so as to solve the problem proposed by the above-mentioned background technology that the device is currently on the market, that is, after being placed in the sampling water area, plankton is collected, and the device is salvaged after a period of time. During actual use, the device is easily affected by the water flow, causing the overall sampling position to shift, which will affect subsequent analysis and research, and the overall placement and salvage require certain techniques and operations, which increases the complexity and cost of the operation. The first fixed rod and the second fixed rod are both inserted into the bottom soil so that the collection device can easily perform limited sampling. During actual use, the sampling point is limited by the length of the first fixed rod and the second fixed rod, so that the overall sampling range is limited, and comprehensive plankton sampling cannot be performed. After the first fixed rod and the second fixed rod are inserted into the soil, the organisms inside the soil are easily stirred, which affects the accuracy of the sampling and the quality of the sample.
[0011] To achieve the above-mentioned object, the present invention provides the following technical solutions: a zooplankton sample collection device capable of distinguishing different water depths, comprising a toothed ring seat;
[0012] The side end of the gear ring seat is equipped with an installation box, the bottom of the installation box is provided with a depth sounder, and the water depth is determined by emitting sound waves and measuring their return time. The surface of the gear ring seat is provided with a support plate, and a double-axis motor is installed on the upper end of the support plate. The first output end of the double-axis motor is connected to a sampling assembly, and a water sample containing zooplankton is collected through a water pump of the sampling assembly;
[0013] The sampling assembly includes a water pump connected to the first output end of the dual-axis motor, the water pump is installed on a support plate, the water pump input end is connected to a hose, a measuring valve is installed on the hose, the end of the hose is connected to a temporary storage box, a sampling pipe is provided at the bottom of the temporary storage box, a sampling tray is installed at the bottom of the sampling pipe, and water samples of zooplankton on the lake surface are transmitted through the sampling tray.
[0014] Preferably, the water pump output end is connected to a storage component, and the storage component includes a first pipe connected to the water pump output end, a first valve is provided on the first pipe, and a sample storage box is installed at the end of the first pipe.
[0015] Preferably, a baffle is provided inside the sample storage box, a detection component is installed on the upper end of the baffle, a side end of the sample storage box is connected to a clean water tank via a second pipe, and a second valve is provided on the second pipe.
[0016] Preferably, a telescopic cylinder is provided inside the installation box, a movable plate is connected to the end of the telescopic cylinder, a movable rod is provided at the side end of the movable plate, the movable rod is connected to the inside of the limit block, the limit block is installed at the upper end of the installation box, and a rotating component is provided on the movable rod.
[0017] Preferably, the rotating assembly includes a moving frame arranged on a moving rod, a slider is connected to the inside of the moving frame, a gear is arranged under the slider, a sampling pipe is connected through the inside of the gear, the gear is meshed and connected to the inside of the gear ring seat, and the gear is installed inside the gear ring seat through a rotating member.
[0018] Preferably, a cleaning assembly is provided at the side end of the gear ring seat, and the cleaning assembly includes an air outlet piece installed at the side end of the gear ring seat, the output end of the air outlet piece is connected to an airbag, the airbag is installed inside a storage seat, the storage seat is provided at the upper end of the installation box, the output end of the airbag is connected to a nozzle, and the nozzle is installed at the bottom of the gear ring seat.
[0019] Preferably, a pressing plate is provided at the side end of the movable plate, and the pressing plate is installed at the side end of the airbag.
[0020] Preferably, a limit seat is provided on the top of the sample storage box, a lighting lamp is provided under the limit seat, and a solar panel is installed on the limit seat.
[0021] Preferably, the second output end of the dual-axis motor is connected to a driving member, a rotating rod is provided on the driving member, the rotating rod is installed on a limiting seat, and bristles are provided at the bottom of the rotating rod.
[0022] Compared with the prior art, the beneficial effects of the present invention are: the zooplankton sample collection device capable of distinguishing different water depths detects the water depth through a depth sounder, which is convenient for subsequent recording operations, and collects water samples containing zooplankton through a water pump of a sampling assembly, which not only reduces the problem of inconvenience in operation caused by the need to place the device in water, but also reduces the problem of sampling being affected by fixing the device with a fixing rod. The specific contents are as follows:
[0023] (1) The depth sounder is used to increase the overall sampling range, and the sampling assembly is used to quickly sample zooplankton on the lake surface, which not only reduces the inconvenience of operating the device in the water, but also reduces the problem of sampling being affected by the use of a fixing rod to fix the device;
[0024] (2) The sample storage box of the storage component is convenient for storing the sampled water source, and the temperature of the water sample is detected by the detection component, which is convenient for more comprehensive data interpretation in subsequent analysis, which not only improves the overall sampling efficiency but also reduces the cost increase caused by the need for multiple sampling devices;
[0025] (3) The gear of the rotating assembly rotates along the inside of the gear ring seat, making it easy to move the sampling pipe inside the gear, reducing the inconvenience caused by the need to manually move the device, and improving the rigor of the data for subsequent testing;
[0026] (4) The nozzle of the cleaning component sprays gas, which is convenient for cleaning impurities on the sampling plate through gas, which not only reduces the problem of increased labor intensity caused by manual cleaning, but also reduces the inconvenience of secondary sampling caused by residual impurities on the sampling plate;
[0027] (5) The sample storage box is protected by a limit seat, which reduces the problem of zooplankton death caused by the external environment in the sample storage box, facilitates subsequent detection operations, and cleans the surface of the solar panel with bristles, reducing the problem of reduced conversion efficiency caused by dust adhering to the surface of the solar panel. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0029] Figure 2 This is a schematic diagram of the internal structure of the sample storage box of the present invention;
[0030] Figure 3 This is a schematic diagram of the connection structure between the measuring valve and the hose of the present invention;
[0031] Figure 4 This is a schematic diagram of the internal structure of the installation box of the present invention;
[0032] Figure 5 It is a schematic diagram of the top view of the gear ring seat of the present invention;
[0033] Figure 6 This is a schematic diagram of the structure of the mobile rod of the present invention when in use;
[0034] Figure 7 This is a schematic diagram of the internal structure of the gear ring seat of the present invention;
[0035] Figure 8 This is a schematic diagram of the internal structure of the storage seat of the present invention;
[0036] Fig. 9 This is a schematic diagram of the upper structure of the support plate of the present invention;
[0037] Fig.10 It is a schematic diagram of the connection structure between the limit seat and the solar panel of the present invention.
[0038] In the figure: 1. gear ring seat; 2. support plate; 3. double-axis motor; 4. water pump; 5. hose; 6. measuring valve; 7. temporary storage box; 8. sampling pipeline; 9. sampling plate; 10. first pipeline; 11. first valve; 12. sample storage box; 13. baffle; 14. detection part; 15. second pipeline; 16. second valve; 17. clean water tank; 18. installation box; 19. telescopic cylinder; 20. moving plate; 21. moving rod; 22. limit block; 23. moving frame; 24. slider; 25. gear; 26. rotating part; 27. extrusion plate; 28. air outlet part; 29. storage seat; 30. air bag; 31. nozzle; 32. limit seat; 33. lighting lamp; 34. solar panel; 35. driving part; 36. rotating rod; 37. bristles; 38. depth sounder. DETAILED DESCRIPTION
[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.
[0040] Embodiment 1:
[0041] In this embodiment, in order to improve the overall collection efficiency, the water sample containing zooplankton is collected by the water pump 4 of the sampling assembly, the purpose of which is to reduce the problem of the need to put the device into the water and cause inconvenience in operation, such as Figure 1-Figure 3The technical solution shown in the figure comprises a gear ring seat 1, a mounting box 18 is installed at the side end of the gear ring seat 1, a depth sounder 38 is arranged at the bottom of the mounting box 18, the water depth is determined by emitting sound waves by the depth sounder 38 and measuring its return time, a support plate 2 is arranged on the surface of the gear ring seat 1, a dual-axis motor 3 is installed at the upper end of the support plate 2, a sampling assembly is connected to the first output end of the dual-axis motor 3, a water sample containing zooplankton is collected by a water pump 4 of the sampling assembly, the sampling assembly comprises a water pump 4 connected to the first output end of the dual-axis motor 3, the water pump 4 is installed on the support plate 2, a hose 5 is connected to the input end of the water pump 4, a measuring valve 6 is installed on the hose 5, a temporary storage box 7 is connected to the end of the hose 5, a sampling pipe 8 is arranged at the bottom of the temporary storage box 7, and a sampling pipe 8 is installed at the bottom of the sampling pipe 8 The sample tray 9 is used to transmit the water sample of zooplankton on the lake surface. The output end of the water pump 4 is connected to a storage component, which includes a first pipe 10 connected to the output end of the water pump 4. A first valve 11 is arranged on the first pipe 10. A sample storage box 12 is installed at the end of the first pipe 10. A baffle 13 is arranged inside the sample storage box 12. A detection component 14 is installed on the upper end of the baffle 13. The side end of the sample storage box 12 is connected to a clean water tank 17 through a second pipe 15. A second valve 16 is arranged on the second pipe 15. The whole structure is moved to the lake surface where sampling is required. At this time, the water depth is detected by a depth sounder 38. The water depth is determined by emitting sound waves and measuring their return time, which is convenient for transmitting the detected data to the operator for storage, which is not only convenient for subsequent The recording operation is performed, and the scope of the overall sampling is increased. At this time, the sampling disk 9 at the lower end of the gear ring seat 1 is moved to the lake surface. At this time, the dual-axis motor 3 at the upper end of the support plate 2 is turned on, and the water pump 4 is driven by the dual-axis motor 3 for use. At this time, the water sample on the lake surface is collected, which is convenient for transmitting the zooplankton on the lake surface through the water sample, and the overall rapid sampling is performed on the lake surface, which reduces the need to put the device into the water. The inconvenience caused by the operation reduces the complexity and cost of the operation. Since a measuring valve 6 is provided on the hose 5, it is convenient to understand the volume of the water sample transported according to the measuring valve 6, and it is convenient to control according to the required sampling volume, thereby improving the overall sampling efficiency. The sampling disk 9 at the bottom of the sampling pipe 8 is used to transport the zooplankton on the lake surface and the water source, which reduces The problem of sampling being affected by fixing the device with a fixing rod is solved, and the water source containing zooplankton is transmitted through the temporary storage box 7. At this time, the first valve 11 at the upper end of the first pipe 10 is opened to facilitate the transmission of the sampled water source to the inside of the sample storage box 12. At this time, the detection part 14 at the upper end of the baffle 13 in the sample storage box 12 is convenient for detection operations, which improves the overall practicality, facilitates the detection of the temperature of the water sample, and records the detected data, so that more comprehensive data interpretation can be carried out in subsequent analysis, and the overall sampling efficiency is greatly improved. The set sample storage box 12 is convenient for isolating the interior through the baffle 13, so that the device can perform sampling operations at different water depths, reducing the problem of increased costs caused by the need for multiple sampling devices.After the water sample in the sample storage box 12 is extracted and stored, the second valve 16 at the upper end of the second pipe 15 is opened, and the dual-axis motor 3 is used to rotate in the opposite direction, so that the water pump 4 transports the clean water in the clean water tank 17 to the inside of the sample storage box 12 for cleaning, thereby reducing the problem of reduced sampling rigor caused by the inconvenience of cleaning the inside of the sample storage box 12.
[0042] Embodiment 2:
[0043] In this embodiment, in order to further improve the overall sampling efficiency, the sampling pipe 8 is driven to move by the rotating assembly, the purpose of which is to reduce the inconvenience caused by the need for manual movement of the device. Figure 4-Figure 7 As shown, it is disclosed that: a telescopic cylinder 19 is arranged inside the installation box 18, a moving plate 20 is connected to the end of the telescopic cylinder 19, a moving rod 21 is arranged at the side end of the moving plate 20, the moving rod 21 is connected to the inside of the limit block 22, the limit block 22 is installed at the upper end of the installation box 18, a rotating assembly is arranged on the moving rod 21, and the rotating assembly includes a moving frame 23 arranged on the moving rod 21, a slider 24 is connected to the inside of the moving frame 23, a gear 25 is arranged under the slider 24, a sampling pipe 8 is connected to the inside of the gear 25, the gear 25 is meshed and connected to the inside of the gear ring seat 1, the gear 25 is installed in the inside of the gear ring seat 1 through a rotating member 26, and the telescopic cylinder 19 is installed in the inside of the gear ring seat 1. The compressed air cylinder 19 moves the movable plate 20 laterally, so that the movable rod 21 at the side end of the movable plate 20 slides inside the limit block 22, so that the movable rod 21 drives the movable frame 23 to move, and the slider 24 inside the movable frame 23 rotates, so that the gear 25 rotates inside the gear ring seat 1. At this time, the gear 25 is assisted by the rotating member 26 to rotate along the inside of the gear ring seat 1, so that the sampling pipe 8 inside the gear 25 is easy to move, which greatly improves the overall sampling efficiency, reduces the inconvenience caused by the need to manually move the device, and the overall rotation is stable, which improves the rigor of the data for later detection.
[0044] Embodiment three:
[0045] In this embodiment, in order to improve the overall service life, the impurities on the sampling plate 9 are cleaned by a cleaning component, the purpose of which is to reduce the inconvenience caused by the residual impurities on the sampling plate 9 during secondary sampling. Figure 8-Figure 10As shown, it is disclosed that: a cleaning component is arranged at the side end of the gear ring seat 1, and the cleaning component includes an air outlet 28 installed at the side end of the gear ring seat 1, and an air bag 30 is connected to the output end of the air outlet 28, and the air bag 30 is installed inside a storage seat 29, and the storage seat 29 is arranged at the upper end of the installation box 18, and a nozzle 31 is connected to the output end of the air bag 30, and the nozzle 31 is installed at the bottom of the gear ring seat 1, and an extrusion plate 27 is arranged at the side end of the movable plate 20, and the extrusion plate 27 is installed at the side end of the air bag 30, and a limit seat 32 is arranged at the top of the sample storage box 12, and a The lighting lamp 33 is provided, and a solar panel 34 is installed on the limit seat 32. The second output end of the dual-axis motor 3 is connected to a driving member 35, and a rotating rod 36 is provided on the driving member 35. The rotating rod 36 is installed on the limit seat 32, and a brush 37 is provided at the bottom of the rotating rod 36. The gas outlet 28 is opened to transmit the gas to the inside of the air bag 30 in the storage seat 29, and the gas is sprayed through the nozzle 31 connected to the output end of the air bag 30, so as to facilitate the cleaning of impurities on the sampling plate 9 and reduce the inconvenience caused by residual impurities on the sampling plate 9 during secondary sampling. The overall cleaning is simple and fast, and it is convenient to use, which reduces the problem of increased labor intensity caused by manual cleaning. When the movable plate 20 is in use, the squeezing plate 27 at its side end is convenient for squeezing the air bag 30 in the storage seat 29. At this time, the gas flow rate inside the air bag 30 changes, which is convenient for the nozzle 31 to spray the gas for cleaning, thereby improving the overall cleaning efficiency. The limit seat 32 installed on the sample storage box 12 is convenient for protective operation, which reduces the problem of zooplankton death caused by the influence of the external environment on the sample storage box 12, and the solar panel 34 on the top of the limit seat 32 is convenient for converting solar energy into electrical energy for use, so that the overall environmental protection performance of the device is greatly improved. Turning on the lighting 33 is convenient for the device to perform sampling operations under poor light conditions, and when the dual-axis motor 3 is in use, its second output end drives the rotating rod 36 to rotate through the driving member 35, so that the bristles 37 at the bottom of the rotating rod 36 are convenient for cleaning the surface of the solar panel 34, reducing the problem of reduced conversion efficiency caused by dust adhering to the surface of the solar panel 34, and the overall practicality is greatly improved.
[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A zooplankton sample collection device capable of distinguishing different water depths, comprising a toothed ring seat (1); It is characterized in that Also includes: The side end of the gear ring seat (1) is provided with an installation box (18), the bottom of the installation box (18) is provided with a depth sounder (38), and the water depth is determined by emitting sound waves through the depth sounder (38) and measuring the return time thereof; the surface of the gear ring seat (1) is provided with a support plate (2), the upper end of the support plate (2) is provided with a double-axis motor (3), the first output end of the double-axis motor (3) is connected to a sampling assembly, and a water sample containing zooplankton is collected through a water pump (4) of the sampling assembly; The sampling assembly comprises a water pump (4) connected to a first output end of a dual-axis motor (3), the water pump (4) being mounted on a support plate (2), the input end of the water pump (4) being connected to a hose (5), the hose (5) being mounted with a measuring valve (6), the end of the hose (5) being connected to a temporary storage box (7), the bottom of the temporary storage box (7) being provided with a sampling pipe (8), the bottom of the sampling pipe (8) being mounted with a sampling tray (9), and water samples of zooplankton on the lake surface being transmitted via the sampling tray (9); A telescopic cylinder (19) is arranged inside the installation box (18), the end of the telescopic cylinder (19) is connected to a moving plate (20), a moving rod (21) is arranged at a side end of the moving plate (20), the moving rod (21) penetrates and is connected inside a limit block (22), the limit block (22) is installed at the upper end of the installation box (18), and a rotating assembly is arranged on the moving rod (21); The rotating assembly comprises a moving frame (23) arranged on a moving rod (21), a slider (24) being connected to the inside of the moving frame (23), a gear (25) being arranged under the slider (24), a sampling pipe (8) being connected through the inside of the gear (25), the gear (25) being meshingly connected to the inside of the gear ring seat (1), and the gear (25) being installed inside the gear ring seat (1) via a rotating member (26); A cleaning assembly is provided at the side end of the gear ring seat (1), the cleaning assembly comprising an air outlet (28) mounted at the side end of the gear ring seat (1), an output end of the air outlet (28) being connected to an air bag (30), the air bag (30) being mounted inside a storage seat (29), the storage seat (29) being arranged at the upper end of the installation box (18), an output end of the air bag (30) being connected to a nozzle (31), the nozzle (31) being mounted at the bottom of the gear ring seat (1); A pressing plate (27) is provided at a side end of the movable plate (20), and the pressing plate (27) is mounted at a side end of the air bag (30).
2. The zooplankton sample collection device capable of distinguishing different water depths according to claim 1, characterized in that: The output end of the water pump (4) is connected to a storage component, the storage component comprising a first pipe (10) connected to the output end of the water pump (4), a first valve (11) being provided on the first pipe (10), and a sample storage box (12) being installed at the end of the first pipe (10).
3. The zooplankton sample collection device capable of distinguishing different water depths according to claim 2, characterized in that: A baffle (13) is provided inside the sample storage box (12), a detection component (14) is installed on the upper end of the baffle (13), a side end of the sample storage box (12) is connected to a clean water tank (17) via a second pipe (15), and a second valve (16) is provided on the second pipe (15).
4. The zooplankton sample collection device capable of distinguishing different water depths according to claim 2, characterized in that: A limit seat (32) is arranged on the top of the sample storage box (12), a lighting lamp (33) is arranged under the limit seat (32), and a solar panel (34) is installed on the limit seat (32).
5. The zooplankton sample collection device capable of distinguishing different water depths according to claim 1, characterized in that: The second output end of the dual-axis motor (3) is connected to a driving member (35), a rotating rod (36) is provided on the driving member (35), the rotating rod (36) is mounted on the limiting seat (32), and bristles (37) are provided at the bottom of the rotating rod (36).
Citation Information
Patent Citations
Zooplankton collection system and zooplankton collection system
CN207784049U
Zooplankton collecting device
CN216567819U
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