Sampling device for detecting phytoplankton in lake

Abstract

The utility model relates to the technical field of water area monitoring, and discloses a sampling device for detecting phytoplankton in a lake, which comprises a placing box, a rotating mechanism is arranged on the upper surface of the placing box, and a reinforcing rod is fixedly connected to the surface of the rotating mechanism. The orientation angle of the salvage net can be flexibly adjusted according to the terrain of a lake, the water flow direction and the predicted distribution condition of phytoplankton, and the angle of the salvage net can be adjusted to be along the water flow direction or form a certain angle with the water flow direction in a lake area with complex water flow, so that the phytoplankton can be salvaged more effectively; depth adjustment is achieved through a second motor, a screw rod, a telescopic rod and a second limiting groove, the depth of the fishing net entering water is controlled, the water entering depth of the fishing net can be adjusted according to the water depth of a lake and the distribution depth of phytoplankton, the sampling quality is improved, and the problems that traditional manual fixed sampling is large in labor amount and high in sampling efficiency are solved. And the sampling depth is difficult to accurately control.

Description

Technical Field

[0001] This utility model relates to the field of water monitoring technology, and in particular to a sampling device for detecting phytoplankton in lakes. Background Technology

[0002] Lakes are complex ecosystems in which phytoplankton play a vital role. They are the basic link in the lake food chain, and their species, quantity and distribution have a significant impact on the overall health of the lake ecosystem. Therefore, accurate detection of phytoplankton is of irreplaceable significance for lake ecological research, water quality monitoring and other work.

[0003] Traditional sampling methods primarily rely on manual retrieval using tools. During manual sampling, staff need to spend extended periods on the lakeshore or in small boats to reach designated locations within the lake. For example, in large lakes, obtaining representative phytoplankton samples often requires sampling at multiple locations. This means staff must frequently move and operate sampling tools, a process that can lead to fatigue. Furthermore, when sampling phytoplankton at different depths, traditional tools often rely solely on manual experience to roughly determine the sampling depth. For instance, when using a simple hand net, staff can only roughly control the depth by the length of their outstretched arm, making it difficult to precisely reach specific depths, such as the middle layer of deep water or the water layer near the bottom. This may result in missing some phytoplankton species distributed at specific depths, thus affecting the accuracy of the test results. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a sampling device for detecting phytoplankton in lakes.

[0005] This utility model is achieved using the following technical solution: a sampling device for detecting phytoplankton in lakes, comprising a placement box, a rotating mechanism provided on the upper surface of the placement box, a reinforcing rod fixedly connected to the surface of the rotating mechanism, a translation frame fixedly connected to the top of the reinforcing rod, a limiting groove I formed on the surface of the translation frame, a lifting frame slidably connected inside the limiting groove I, a limiting groove II formed on the surface of the lifting frame, an electric push rod fixedly connected to the inner wall of the limiting groove I, a right-angle frame slidably connected inside the limiting groove II, a reinforcing seat fixedly connected to the bottom of the right-angle frame, a collection frame fixedly connected to the surface of the reinforcing seat, a retrieval net fixedly installed inside the collection frame, a second motor fixedly connected to the top of the lifting frame, a screw fixedly connected to the output end of the second motor, and a telescopic rod threadedly connected to the surface of the screw.

[0006] The above technical solution allows for adjustable sampling depth and angle, adapting to different lake depths, topography, and flow conditions. Appropriate sampling depth and orientation can be flexibly selected based on specific lake characteristics, ensuring the collection of representative phytoplankton samples that better reflect the true state of lake phytoplankton. This avoids the significant sampling errors caused by the difficulty in accurately controlling sampling position and depth in traditional manual fixed sampling methods. Precise adjustments can reduce errors caused by inaccurate sampling position and depth, improving sampling quality.

[0007] As a further improvement to the above solution, the rotating mechanism includes a guide ring groove and a motor. The inner wall of the guide ring groove is provided with a limiting inner groove. The output end of the motor is fixedly connected to a contact plate. Several rotating rods are fixedly connected to the lower surface of the contact plate. Extension rods are fixedly connected to the surface of the rotating rods.

[0008] The above technical solutions ensure the accuracy and stability of angle adjustment, thereby indirectly improving the accuracy of sampling.

[0009] As a further improvement to the above solution, the rotating rod is slidably connected to the inside of the guide ring groove, and the extension rod is slidably connected to the inside of the limiting inner groove.

[0010] The above technical solution ensures the stability of the contact disc rotation, thereby guaranteeing the accuracy of the angle adjustment of the entire sampling device and helping to improve the sampling precision.

[0011] As a further improvement to the above solution, the reinforcing rod is fixedly connected to the upper surface of the contact plate.

[0012] As a further improvement to the above solution, one end of the electric push rod is fixedly connected to the inner wall of the limiting groove, and the other end of the electric push rod is fixedly connected to the surface of the lifting frame.

[0013] The above technical solution enables the sampling device to move horizontally within a certain range for sampling, thereby increasing the sampling range and accuracy.

[0014] As a further improvement to the above solution, the telescopic rod is fixedly connected to the upper surface of the right-angle frame.

[0015] As a further improvement to the above solution, the guide ring groove is formed on the upper surface of the placement box.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention achieves angle adjustment through a rotating mechanism, allowing for flexible adjustment of the retrieval net's orientation angle based on the lake's topography, water flow direction, and expected phytoplankton distribution. In lake areas with complex water flow, the net's angle can be adjusted to align with or be at a certain angle to the water flow direction, thus more effectively retrieval of phytoplankton. Depth adjustment is achieved through a second motor, screw, telescopic rod, and limiting groove, controlling the depth of the retrieval net in the water. The depth of the net can be adjusted according to the lake's water depth and the distribution depth of phytoplankton, improving sampling quality and avoiding the problems of high labor intensity and difficulty in accurately controlling sampling depth associated with traditional manual sampling. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the electric push rod of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the telescopic rod of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the collection frame of this utility model;

[0022] Figure 5 This utility model Figure 4 A magnified structural diagram of point A in the middle.

[0023] Explanation of key symbols:

[0024] 1. Placement box; 2. Rotating mechanism; 201. Guide ring groove; 202. Limiting inner groove; 203. Motor 1; 204. Contact plate; 205. Rotating rod; 206. Extension rod; 3. Reinforcing rod; 4. Translation frame; 5. Limiting groove 1; 6. Lifting frame; 7. Electric push rod; 8. Limiting groove 2; 9. Right angle frame; 10. Reinforcing seat; 11. Collection frame; 12. Salvage net; 13. Motor 2; 14. Screw; 15. Telescopic rod. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] Example:

[0027] Please combine Figure 1-5This embodiment of a sampling device for detecting phytoplankton in lakes includes a placement box 1. A rotating mechanism 2 is provided on the upper surface of the placement box 1. A reinforcing rod 3 is fixedly connected to the surface of the rotating mechanism 2. A translation frame 4 is fixedly connected to the top of the reinforcing rod 3. A limiting groove 5 is formed on the surface of the translation frame 4. A lifting frame 6 is slidably connected inside the limiting groove 5. A second limiting groove 8 is formed on the surface of the lifting frame 6. An electric push rod 7 is fixedly connected to the inner wall of the limiting groove 5. A right-angle frame 9 is slidably connected inside the limiting groove 8. A reinforcing seat 10 is fixedly connected to the bottom of the right-angle frame 9. A collection frame 11 is fixedly connected to the surface of the reinforcing seat 10. A retrieval net 12 is fixedly installed inside the collection frame 11. A second motor 13 is fixedly connected to the top of the lifting frame 6. A screw 14 is fixedly connected to the output end of the second motor 13. The screw 14 is threadedly connected to a telescopic rod 15. The rotating mechanism 2 can adjust the orientation angle of the lower dredging net 12. The motor 13 drives the screw 14 to rotate. Since the screw 14 is threadedly connected to the telescopic rod 15, the rotation of the screw 14 causes the telescopic rod 15 to drive the right-angle frame 9 to move up and down along the limiting groove 8, thereby controlling the depth of the dredging net 12 into the water. The electric push rod 7 is started. Since one end of the electric push rod 7 is fixed to the inner wall of the limiting groove 5 and the other end is fixed to the surface of the lifting frame 6, the electric push rod 7 drives the lifting frame 6 to move left and right along the limiting groove 5. The movement of the lifting frame 6 causes the lower dredging net 12 to move left and right, collecting phytoplankton into the collection frame 11. After sampling is completed, the motor 13 is reversed to raise the dredging net 12, completing the sampling operation.

[0028] The rotating mechanism 2 includes a guide ring groove 201 and a motor 203. The inner wall of the guide ring groove 201 is provided with a limiting inner groove 202. The output end of the motor 203 is fixedly connected to a contact plate 204. Several rotating rods 205 are fixedly connected to the lower surface of the contact plate 204. Extension rods 206 are fixedly connected to the surface of the rotating rods 205. When the motor 203 in the rotating mechanism 2 is working, it drives the contact plate 204 to rotate. The rotating rods 205 and extension rods 206 on the lower surface of the contact plate 204 slide in the guide ring groove 201 and the limiting inner groove 202, thereby achieving stable rotation. This drives the reinforcing rod 3, the translation frame 4 and other components to rotate as a whole, ultimately changing the orientation angle of the salvage net 12.

[0029] The rotating rod 205 is slidably connected to the inside of the guide ring groove 201, and the extension rod 206 is slidably connected to the inside of the limiting inner groove 202. The rotating rod 205 slides in the guide ring groove 201, and the extension rod 206 slides in the limiting inner groove 202. The sliding cooperation between the two plays a guiding and limiting role in the rotation of the contact plate 204 in the rotating mechanism 2, preventing the contact plate 204 from deviating during the rotation.

[0030] The reinforcing rod 3 is fixedly connected to the upper surface of the contact plate 204. The fixed connection of the reinforcing rod 3 to the upper surface of the contact plate 204 enables the reinforcing rod 3 to rotate synchronously when the contact plate 204 rotates, thereby transmitting the rotation of the rotating mechanism 2 to components such as the translation frame 4, so as to adjust the angle of the salvage net 12.

[0031] One end of the electric push rod 7 is fixedly connected to the inner wall of the limiting groove 5, and the other end of the electric push rod 7 is fixedly connected to the surface of the lifting frame 6. When the electric push rod 7 extends or retracts, it can drive the lifting frame 6 to move left and right along the limiting groove 5, thereby realizing the horizontal movement of the retrieval net 12 for sampling.

[0032] The telescopic rod 15 is fixedly connected to the upper surface of the right-angle frame 9.

[0033] The guide ring groove 201 is formed on the upper surface of the placement box 1.

[0034] The implementation principle of a sampling device for detecting phytoplankton in a lake according to an embodiment of this application is as follows: First, the operator connects the device to an external power source. Then, based on the lake's topography, water flow direction, and expected phytoplankton distribution, the operator starts motor 203 in the rotating mechanism 2. Motor 203 drives the contact plate 204 to rotate. The rotating rod 205 on the lower surface of the contact plate 204 slides within the guide ring groove 201, and the extension rod 206 slides within the limiting inner groove 202. This sliding cooperation ensures stable rotation of the contact plate 204. Since the reinforcing rod 3 is fixedly connected to the upper surface of the contact plate 204, the rotation of the contact plate 204 drives the reinforcing rod 3 to rotate synchronously, thereby causing the translation frame 4, lifting frame 6, right-angle frame 9, collection frame 11, and retrieval net 12 to rotate as a whole. The orientation angle of the retrieval net 12 is adjusted so that it faces the area where phytoplankton may be densely concentrated. Motor 13 drives screw 14 to rotate. Since screw 14 is threadedly connected to telescopic rod 15, and telescopic rod 15 is fixedly connected to the upper surface of right-angle frame 9, the rotation of screw 14 causes telescopic rod 15 to drive right-angle frame 9 to move up and down along limiting groove 8. The depth of the phytoplankton 12 in the water is adjusted according to the lake's depth and the distribution depth of phytoplankton to ensure effective phytoplankton retrieval. Electric push rod 7 is activated. Since one end of electric push rod 7 is fixedly connected to the inner wall of limiting groove 5, and the other end is fixedly connected to the surface of lifting frame 6, the extension and retraction of electric push rod 7 drives lifting frame 6 to move left and right along limiting groove 5. The movement of lifting frame 6 causes the phytoplankton 12 below to move left and right, retrieval the phytoplankton into the collection frame 11. After the phytoplankton collection is completed, motor 13 is reversed. Motor 13 drives screw 14 to rotate in the opposite direction, causing the retrieval net 12 to rise until it is completely out of the water, thus completing the entire sampling operation and properly preserving the phytoplankton samples in collection frame 11 for subsequent testing and analysis.

[0035] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A sampling device for detecting phytoplankton in lakes, characterized in that, The device includes a placement box (1), on the upper surface of which is provided a rotating mechanism (2). A reinforcing rod (3) is fixedly connected to the surface of the rotating mechanism (2). A translation frame (4) is fixedly connected to the top of the reinforcing rod (3). A limiting groove (5) is formed on the surface of the translation frame (4). A lifting frame (6) is slidably connected inside the limiting groove (5). A limiting groove (8) is formed on the surface of the lifting frame (6). An electric push rod (7) is fixedly connected to the inner wall of the limiting groove (5). The inner side of the limiting groove (8) is slidably connected to a right angle frame (9), the bottom of the right angle frame (9) is fixedly connected to a reinforcing seat (10), the surface of the reinforcing seat (10) is fixedly connected to a collection frame (11), the inside of the collection frame (11) is fixedly installed with a retrieval net (12), the top of the lifting frame (6) is fixedly connected to a motor (13), the output end of the motor (13) is fixedly connected to a screw (14), and the surface of the screw (14) is threadedly connected to a telescopic rod (15).

2. The sampling device for detecting phytoplankton in lakes as described in claim 1, characterized in that: The rotating mechanism (2) includes a guide ring groove (201) and a motor (203). The inner wall of the guide ring groove (201) has a limiting inner groove (202). The output end of the motor (203) is fixedly connected to a contact plate (204). Several rotating rods (205) are fixedly connected to the lower surface of the contact plate (204). An extension rod (206) is fixedly connected to the surface of the rotating rod (205).

3. The sampling device for detecting phytoplankton in lakes as described in claim 2, characterized in that: The rotating rod (205) is slidably connected to the inside of the guide ring groove (201), and the extension rod (206) is slidably connected to the inside of the limiting inner groove (202).

4. The sampling device for detecting phytoplankton in lakes as described in claim 1, characterized in that: The reinforcing rod (3) is fixedly connected to the upper surface of the contact plate (204).

5. A sampling device for detecting phytoplankton in lakes as described in claim 1, characterized in that: One end of the electric push rod (7) is fixedly connected to the inner wall of the limiting groove (5), and the other end of the electric push rod (7) is fixedly connected to the surface of the lifting frame (6).

6. The sampling device for detecting phytoplankton in lakes as described in claim 1, characterized in that: The telescopic rod (15) is fixedly connected to the upper surface of the right-angle frame (9).

7. A sampling device for detecting phytoplankton in lakes as described in claim 2, characterized in that: The guide ring groove (201) is formed on the upper surface of the placement box (1).

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