A water pollution monitoring device for fishery resources

Abstract

This invention discloses a fishery resource water pollution monitoring device, belonging to the field of water pollution monitoring technology. It includes a mounting frame with a fixed box fixedly connected to its side. An adjusting screw is rotatably connected to the upper part of the fixed box, and a sleeve rod is slidably disposed inside the lower part of the fixed box. A detection screen is disposed on the outer side of the fixed box. After monitoring is completed, the driver rotates the support frame in the reverse direction, causing the auxiliary hole on the protective outer cylinder to re-align with the water inlet of the monitoring tank. When the support frame returns to its initial position, the sealing airbag rotates again to the same position as the water inlet. The inflated sealing airbag's inner side tightly seals against the outer wall of the monitoring tank, thus forming a reliable seal on the water inlet. This effectively prevents external water and impurities from entering the monitoring tank and contaminating the monitoring environment or damaging internal components when the equipment is moved or not in use. It also avoids secondary pollution caused by leakage of residual water samples after monitoring.

Description

Technical Field

[0001] This invention relates to the field of water pollution monitoring technology, specifically to a water pollution monitoring device for fishery resources. Background Technology

[0002] Fishery resources refer to the total number of economically valuable animals and plants such as fish, crustaceans, shellfish, algae, and marine mammals in natural waters. Fishery resources play a vital role in maintaining the ecological balance of aquatic areas and ensuring the sustainable development of fisheries. With the increasing prominence of problems such as substandard industrial wastewater discharge, agricultural non-point source pollution, and indiscriminate dumping of domestic sewage, the water quality of fishery waters has been threatened. Water pollution not only leads to the deterioration of the living environment of aquatic organisms such as fish, a decrease in reproductive capacity, and an increase in the incidence of diseases, but may even cause large-scale deaths, directly affecting fishery output and fishermen's economic income.

[0003] Existing technology 1 (Chinese Patent No. CN221883608U, Publication Date: 2024-10-22) discloses an environmental monitoring device for surface water pollution control, relating to the field of environmental monitoring technology. It includes a monitoring device block with an internal cavity. Through an adjustable structure, it can monitor surface water at different depths, avoiding the problem of traditional surface water pollution control monitoring equipment only being able to monitor surface water at a fixed depth and not at multiple depths. This results in better monitoring performance, ensuring the accuracy of surface water monitoring. Furthermore, the device is applicable to surface water of various depths, avoiding the problem of traditional surface water pollution control monitoring equipment being unable to adjust the monitoring depth, thus preventing its use at certain specific surface water monitoring locations. This saves on the cost of purchasing new equipment, reduces costs in the environmental monitoring process, and greatly improves the effectiveness of the equipment.

[0004] There is also prior art 2 (Chinese Patent No. CN116429995B, Publication Date: 2025-08-08), which describes a device and method for monitoring pollution in aquaculture wastewater. For detecting pollutants in aquaculture wastewater, the device can be placed on a corridor platform and moved along the platform. Once it reaches a specific position, the probe extends into the wastewater to detect the corresponding parameters. Furthermore, the use of left and right clamping and positioning wheels ensures more accurate movement of the mobile vehicle on the corridor platform, preventing deviation from the center. This ensures good positional uniformity for the probes on both sides when detecting wastewater at both locations, making the distance between the probes and the corridor platform controllable. The lifting drive mechanism further enables precise control of the probe positions on both sides.

[0005] While existing technologies can adjust the detection location, in actual fishery water environments, there are often problems such as aquatic plant entanglement, plankton attachment, and sediment deposition. These impurities easily adhere to the sampling port or sensor surface of the monitoring equipment, affecting the monitoring accuracy and equipment lifespan. When monitoring water quality at different depths, existing technologies involve the monitoring components in direct contact with the water body, which is prone to pollution and blockage after long-term use. Furthermore, during non-monitoring periods, the monitoring components remain exposed to the water body, accelerating component wear and aging, and increasing maintenance costs and frequency.

[0006] Therefore, we propose a water pollution monitoring device for fishery resources to address the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide a fishery resource water pollution monitoring device to solve the problems mentioned in the background art, such as impurities easily adhering to the sampling port or sensor surface of the monitoring device, affecting the monitoring accuracy and device lifespan. In the prior art, when monitoring water quality at different depths, the monitoring components are in direct contact with the water body, which is prone to pollution and blockage after long-term use. Moreover, during non-monitoring periods, the monitoring components are still exposed to the water body, which accelerates the wear and aging of the components and increases the maintenance cost and frequency.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a fishery resource water pollution monitoring device, comprising a mounting frame, a fixed box fixedly connected to the side of the mounting frame, an adjusting screw rotatably connected to the upper part of the fixed box, a sleeve rod slidably disposed inside the lower part of the fixed box, a detection screen disposed on the outer side of the fixed box, a monitoring bucket fixedly connected to the lower end of the sleeve rod, and a monitoring instrument for monitoring water quality fixedly connected inside the monitoring bucket, a protective outer cylinder sleeved on the outer side of the monitoring bucket, and an adjusting mechanism disposed between the inner side of the protective outer cylinder and the interior of the monitoring bucket, the adjusting mechanism adjusting the position of the protective outer cylinder by rotating the support frame it contains in the forward direction, allowing water to enter the monitoring bucket for monitoring operations, a sealing mechanism disposed between the inner wall of the monitoring bucket and the interior of the protective outer cylinder, the sealing mechanism sealing the monitoring bucket by rotating the support frame in the reverse direction.

[0009] Preferably, the sleeve rod is threaded to the outside of the adjusting screw, and limit blocks are fixedly connected to the front and rear sides of the outside of the sleeve rod. The inner wall of the fixing box is provided with a sliding groove, and the limit blocks are slidably connected inside the sliding groove.

[0010] Preferably, the left and right sides of the fixed box are rotatably connected to connecting rods, and the inner side of the connecting rod is fixedly connected to an abutment rod, and the outer side of the connecting rod is fixedly connected to a water stirring rod. A torsion spring is fixedly connected between the side of the connecting rod and the fixed box.

[0011] Preferably, the sleeve rod is fixedly connected to the left and right sides at equal intervals. When the sleeve rod moves vertically, the contact frame and the contact rod come into contact, and the water stirring rod is rotated through the connecting rod, thereby agitating the water.

[0012] Preferably, the adjustment mechanism includes a driver, which is fixedly connected inside the monitoring barrel, and the lower output shaft end of the driver is fixedly connected to the support frame. A limit groove is provided on the monitoring barrel, and the outer end of the support frame is slidably connected inside the limit groove.

[0013] Preferably, the outer end of the support frame is fixedly connected to the protective outer cylinder, and the protective outer cylinder has an auxiliary hole on its periphery. The monitoring bucket has an inlet hole on its periphery for water to enter. When the support frame is in the initial position, the auxiliary hole and the inlet hole do not correspond, and the water cannot enter the monitoring bucket through the inlet hole.

[0014] Preferably, the sealing mechanism includes a sealing airbag, which is fixedly connected to the inner wall of the protective outer cylinder. When the support frame is in the initial position, the sealing airbag and the water inlet are located at the same position, and the inner side of the sealing airbag is tightly fitted to the outer wall of the monitoring tank. A connecting hose is provided above the sealing airbag.

[0015] Preferably, the monitoring barrel has a fixedly connected air storage bladder inside, and the air storage bladder is arranged in a ring structure, and the air storage bladder is connected to the other end of the connecting hose.

[0016] Preferably, an abutment airbag is provided through the lower part of the air storage airbag, and a compression frame is fixedly connected to the side of the support frame, with the compression frame corresponding to the position of the abutment airbag. When the support frame rotates in the opposite direction, the compression frame compresses the abutment airbag.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) An adjusting screw is provided. The user can manually rotate the adjusting screw. Through the threaded connection between the adjusting screw and the sleeve and the limiting action of the limiting block and the sliding groove, the sleeve can only move vertically along the inside of the fixed box as the adjusting screw rotates. When the adjusting screw rotates in the forward direction, the sleeve will drive the monitoring bucket fixedly connected to its lower end and the protective outer cylinder sleeved on the outside of the monitoring bucket to move downward together, thus going deep into the fishery waters to be monitored. When the adjusting screw rotates in the reverse direction, the sleeve will drive the monitoring bucket and the protective outer cylinder to move upward, so as to remove them from the water and realize the adjustment of the monitoring position of waters at different depths.

[0019] (2) During the movement of the sleeve rod, the contact frame set on the side of the sleeve rod will move synchronously. When the contact frame exerts a contact force on the contact rod, the connecting rod will drive the stirring rod to rotate. As the contact rod continues to move downward, the contact rod gradually disengages from the contact rod. When the contact rod is no longer under force, the stirring rod rotates to reset. The rotation of the stirring rod can agitate the water around the monitoring tank, so that the water in the monitoring area can be fully mixed, avoiding deviations in the monitoring results due to local stillness or concentration gradients in the water, thereby ensuring that the water samples entering the monitoring tank later are more representative and improving the accuracy of the monitoring data.

[0020] (3) A protective outer cylinder is provided. When the equipment needs to perform water quality monitoring, the driver starts and drives the support frame to rotate in the positive angle under the guidance of the limit groove. The protective outer cylinder will rotate synchronously with the support frame. The auxiliary holes on the periphery of the protective outer cylinder gradually rotate to correspond to the position of the water inlet hole on the periphery of the monitoring tank. The external water can then smoothly enter the monitoring tank through the water inlet hole and the auxiliary hole in sequence, providing the water sample to be tested for the monitoring instrument.

[0021] (4) When the monitoring is completed, the driver drives the support frame to rotate in the opposite direction, so that the auxiliary hole on the outer protective cylinder is misaligned with the water inlet of the monitoring barrel again. When the support frame returns to the initial position, the sealing airbag rotates to the same position as the water inlet again. The inner side of the inflated sealing airbag fits tightly against the outer wall of the monitoring barrel, thus forming a reliable seal for the water inlet. This effectively prevents external water and impurities from entering the monitoring barrel and polluting the monitoring environment or damaging internal components when the equipment is moved or not in use. It also avoids the leakage of residual water samples after the monitoring is completed, which would cause secondary pollution. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the fixing box of the present invention;

[0024] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0025] Figure 4 This is a three-dimensional sectional view of the fixing box of the present invention;

[0026] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the contact frame of the present invention;

[0028] Figure 7This is a schematic diagram of the three-dimensional structure of the limiting groove of the present invention;

[0029] Figure 8 This is a schematic diagram of the three-dimensional structure of the driver of the present invention;

[0030] Figure 9 This is a schematic diagram of the three-dimensional structure of the monitoring bucket of the present invention;

[0031] Figure 10 This is a schematic diagram of the three-dimensional structure of the sealing airbag of the present invention;

[0032] Figure 11 This is a schematic diagram of the three-dimensional structure of the extrusion frame of the present invention.

[0033] In the diagram: 1. Mounting bracket; 2. Fixing box; 3. Adjusting screw; 4. Detection screen; 5. Sleeve rod; 6. Monitoring tank; 7. Protective outer cylinder; 8. Stirring rod; 9. Torsion spring; 10. Connecting rod; 11. Abutment rod; 12. Abutment frame; 13. Limiting block; 14. Slide groove; 15. Sealing airbag; 16. Air storage airbag; 17. Support frame; 18. Limiting groove; 19. Water inlet; 20. Auxiliary hole; 21. Monitor; 22. Connecting hose; 23. Driver; 24. Abutment airbag; 25. Squeezing frame. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1: In actual fishery water monitoring, water bodies may have localized stagnant areas or concentration gradients due to various factors, such as differences in water flow velocity and biological activity. Without agitation, the water sample entering monitoring tank 6 may not accurately reflect the water quality of the entire monitoring area, leading to biased monitoring results. Figures 1-6The present invention provides the following technical solution: a fishery resource water pollution monitoring device, wherein a fixed box 2 is fixedly connected to the side of the mounting frame 1, and an adjusting screw 3 is rotatably connected to the upper part of the fixed box 2, and a sleeve 5 is slidably arranged inside the lower part of the fixed box 2; a detection screen 4 is arranged on the outer side of the fixed box 2; a monitoring tank 6 is fixedly connected to the lower end of the sleeve 5, and a monitoring instrument 21 for monitoring water quality is fixedly connected inside the monitoring tank 6; the sleeve 5 is threaded to the outer side of the adjusting screw 3, and limit blocks 13 are fixedly connected to the front and rear sides of the outer side of the sleeve 5. The inner wall of the fixed box 2 is provided with a sliding groove 14. The limiting block 13 is slidably connected inside the sliding groove 14. The left and right sides of the fixed box 2 are rotatably connected with connecting rods 10. The inner side of the connecting rod 10 is fixedly connected with a contact rod 11, and the outer side of the connecting rod 10 is fixedly connected with a water stirring rod 8. The side of the connecting rod 10 is fixedly connected with a torsion spring 9 between it and the fixed box 2. The left and right sides of the sleeve rod 5 are fixedly connected with contact frames 12 at equal intervals. When the sleeve rod 5 moves vertically, the contact frames 12 and the contact rod 11 collide, and the water stirring rod 8 is rotated through the connecting rod 10. The water stirring rod 8 is used to agitate the water.

[0036] When the user needs to adjust the monitoring position to obtain data from different water depths, they only need to manually rotate the adjusting screw 3. The adjusting screw 3 and the sleeve 5 are connected by a threaded design. When the adjusting screw 3 rotates, based on the transmission principle of the thread, a force is generated that causes the sleeve 5 to move. At the same time, the limiting block 13 is installed on the sleeve 5, and the sliding groove 14 is formed on the inner wall of the fixing box 2. The two work together to form a precise limiting structure. The limiting block 13 and the sliding groove 14 effectively restrict the rotational freedom of the sleeve 5, so that the sleeve 5 will not move with the adjusting screw 3 when the adjusting screw 3 rotates. As the sleeve rod 5 rotates downwards, it causes the monitoring bucket 6, which is fixedly connected to its lower end via a sturdy connector, to move downwards as well. The protective outer cylinder 7 also moves downwards along with the monitoring bucket 6, allowing the entire monitoring assembly to penetrate deep into the fishery waters to be monitored. During the vertical movement of the sleeve rod 5 along the interior of the fixing box 2, the contact frames 12, installed on both sides of the sleeve rod 5 and fixedly connected at equal intervals, will move vertically in sync with the movement of the sleeve rod 5. When the contact frames 12 gradually move and come into contact with the contact rod 11, the contact frames 12 will... The abutment rod 11 applies a horizontal abutment force. Since the connecting rod 10 and the fixed box 2 are connected by a rotating shaft, the connecting rod 10 rotates around the rotating shaft under the influence of the abutment force. As the connecting rod 10 rotates, the stirring rod 8 also rotates. As the sleeve rod 5 continues to move downwards, the abutment frame 12 also continues to move downwards. At this time, the contact state between the abutment frame 12 and the abutment rod 11 gradually changes, and the abutment frame 12 gradually disengages from the abutment rod 11. When the abutment rod 11 is no longer subjected to the abutment force of the abutment frame 12, the connecting rod 10 rotates. Under the elastic force generated by the release of the elastic potential energy stored in the torsion spring 9, the connecting rod 10 will rotate in the opposite direction around the rotation axis, thereby driving the water stirring rod 8 fixedly connected to its outer side to rotate and reset. During the rotation, the water stirring rod 8 will generate a strong stirring effect on the water around the monitoring tank 6. This stirring can break the original static state of the water, make the water in the monitoring area fully mixed and uniform, and ensure that the water sample entering the monitoring tank 6 later is more representative, thereby significantly improving the accuracy and reliability of the monitoring data and providing strong data support for the scientific management and decision-making of fishery waters.

[0037] Example 2: Figures 7-11The present invention provides the following technical solution: a fishery resource water pollution monitoring device, wherein a protective outer cylinder 7 is sleeved on the outside of the monitoring tank 6, and an adjustment mechanism is provided between the inner side of the protective outer cylinder 7 and the inside of the monitoring tank 6. The adjustment mechanism adjusts the position of the protective outer cylinder 7 by rotating the support frame 17 it includes in the positive direction, so that water can enter the monitoring tank 6 for monitoring. The adjustment mechanism includes a driver 23, which is fixedly connected to the inside of the monitoring tank 6, and the lower output shaft end of the driver 23 is fixedly connected to the support frame 17. A limiting groove 18 is opened on the monitoring tank 6, and the outer end of the support frame 17 is slidably connected to the inside of the limiting groove 18. The outer end of the support frame 17 is fixedly connected to the protective outer cylinder 7, and an auxiliary hole 20 is opened on the periphery of the protective outer cylinder 7. A water inlet hole 19 for water to enter is opened on the periphery of the monitoring tank 6. When the support frame 17 is in the initial position, the auxiliary hole 20 and the water inlet hole 19 do not correspond, and water cannot enter the monitoring tank 6 through the water inlet hole 19.

[0038] When the device receives a water quality monitoring command, the driver 23 starts and drives the connected support frame 17 to rotate in a positive direction. During the rotation, the support frame 17 is ensured to rotate smoothly by the limiting groove 18, avoiding swaying or deviation, thus ensuring the stability and reliability of the entire rotation process. When the support frame 17 rotates, the protective outer cylinder 7 rotates synchronously with the support frame 17 at the same angle. During the rotation of the protective outer cylinder 7, the auxiliary holes 20 evenly distributed on its periphery gradually rotate to correspond to the positions of the water inlet holes 19 set on the periphery of the monitoring tank 6. In the initial state, the protective outer cylinder 7 can provide effective protection for the monitoring tank 6, preventing debris, organisms, etc. in the water from damaging the monitoring tank 6, ensuring the accuracy and stability of the monitoring data. The sealing airbag 15 is tightly fitted to the position of the water inlet hole 19, preventing the water from entering the tank. The water inlet 19 provides a good seal. As the outer protective cylinder 7 rotates, the sealing airbag 15 also shifts position, gradually moving away from the water inlet 19, thus releasing the seal on the water inlet 19. When the auxiliary hole 20 is completely aligned with the water inlet 19 and the sealing airbag 15 is completely offset from the water inlet 19, the external water, under its own pressure, flows smoothly into the monitoring tank 6 through the auxiliary hole 20 and the water inlet 19. A high-precision monitoring instrument 21 is installed inside the monitoring tank 6. The monitoring instrument 21 has multiple monitoring functions and can analyze and detect various indicators in the water sample in real time and accurately, such as pH, dissolved oxygen content, and heavy metal content. The water sample entering the monitoring tank 6 provides a reliable test sample for the monitoring instrument 21, enabling it to obtain accurate water quality data and provide a scientific basis for subsequent water quality assessment and decision-making.

[0039] Example 3: The monitoring tank 6 contains high-precision instruments and sensitive components. If water or impurities enter, they may contaminate the monitoring environment, leading to inaccurate monitoring data, or even damaging internal components, affecting the normal operation and lifespan of the equipment. To solve this problem, such as... Figures 7-11 The present invention provides the following technical solution: a fishery resource water pollution monitoring device, wherein a sealing mechanism is provided between the inner wall of the monitoring tank 6 and the interior of the protective outer cylinder 7. The sealing mechanism achieves sealing of the monitoring tank 6 by the reverse rotation of the support frame 17. The sealing mechanism includes a sealing airbag 15, which is fixedly connected to the inner wall of the protective outer cylinder 7. When the support frame 17 is in the initial position, the sealing airbag 15 and the water inlet 19 are located at the same position, and the inner side of the sealing airbag 15 is flush with the monitoring tank. The outer wall of the 6 is tightly fitted, and a connecting hose 22 is provided above the sealing airbag 15. An air storage airbag 16 is fixedly connected inside the monitoring tank 6, and the air storage airbag 16 is arranged in a ring structure. The air storage airbag 16 is connected to the other end of the connecting hose 22. An abutting airbag 24 is provided below the air storage airbag 16. A compression frame 25 is fixedly connected to the side of the support frame 17, and the compression frame 25 is positioned corresponding to the abutting airbag 24. When the support frame 17 rotates in the opposite direction, the compression frame 25 compresses the abutting airbag 24.

[0040] After the water quality monitoring is completed, the driver 23, located in the key power part of the equipment, drives the connected support frame 17 to rotate in the reverse direction. As the support frame 17 rotates, the protective outer cylinder 7 fixedly connected to it also rotates synchronously. The auxiliary holes 20 evenly distributed around the periphery of the protective outer cylinder 7 gradually misalign with the water inlet holes 19 at the corresponding positions around the periphery of the monitoring tank 6. When they are completely misaligned, an effective barrier is formed between the auxiliary holes 20 and the water inlet holes 19, initially preventing the entry of external water. The squeezing frame 25 installed on the side of the support frame 17 moves synchronously with the reverse rotation of the support frame 17, gradually approaching the contact airbag 24 located below the air storage airbag 16. When the squeezing frame 25 contacts the contact airbag 24, As the support frame 17 continues to rotate, the pressure applied by the compression frame 25 to the contact airbag 24 gradually increases. Under the action of pressure, the contact airbag 24 deforms, and the gas inside is forced into the storage airbag 16 through the preset channel. As the gas is continuously injected, the storage airbag 16 gradually expands. The gas inside the storage airbag 16 is quickly transported to the sealing airbag 15 through the connecting hose 22. The sealing airbag 15 begins to inflate and expand. Under the action of gas pressure, the inner side of the sealing airbag 15 is tightly attached to the outer wall of the monitoring tank 6, effectively preventing external water, impurities, etc. from entering the monitoring tank 6 during equipment movement or when not in use, and avoiding secondary pollution caused by leakage of residual water samples after monitoring is completed.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water pollution monitoring device for fishery resources, comprising a mounting frame (1), wherein a fixed box (2) is fixedly connected to the side of the mounting frame (1), and an adjusting screw (3) is rotatably connected to the upper part of the interior of the fixed box (2), and a sleeve rod (5) is slidably arranged at the lower part of the interior of the fixed box (2), and a detection screen (4) is arranged on the outer side of the fixed box (2), characterized in that, The lower end of the sleeve (5) is fixedly connected to a monitoring bucket (6), and a monitoring instrument (21) for monitoring water quality is fixedly connected inside the monitoring bucket (6). A protective outer cylinder (7) is sleeved on the outside of the monitoring bucket (6), and an adjustment mechanism is provided between the inner side of the protective outer cylinder (7) and the inside of the monitoring bucket (6). The adjustment mechanism adjusts the position of the protective outer cylinder (7) by rotating the support frame (17) it contains in the positive direction, so that water enters the monitoring bucket (6) for monitoring. A sealing mechanism is also provided between the inner wall of the monitoring bucket (6) and the inside of the protective outer cylinder (7). The sealing mechanism seals the monitoring bucket (6) by rotating the support frame (17) in the opposite direction. The adjustment mechanism includes a driver (23), which is fixedly connected inside the monitoring tank (6). The lower output shaft end of the driver (23) is fixedly connected to the support frame (17). A limit groove (18) is provided on the monitoring tank (6). The outer end of the support frame (17) is slidably connected inside the limit groove (18). The outer end of the support frame (17) is fixedly connected to the protective outer cylinder (7). An auxiliary hole (20) is provided on the periphery of the protective outer cylinder (7). A water inlet hole (19) for water to enter is provided on the periphery of the monitoring tank (6). When the support frame (17) is in the initial position, the auxiliary hole (20) and the water inlet hole (19) are not in the same position, and the water cannot enter the monitoring tank (6) through the water inlet hole (19). The sealing mechanism includes a sealing airbag (15), which is fixedly connected to the inner wall of the protective outer cylinder (7). When the support frame (17) is in the initial position, the sealing airbag (15) and the water inlet hole (19) are in the same position, and the inner side of the sealing airbag (15) is tightly fitted to the outer wall of the monitoring tank (6). A connecting hose (22) is connected above the sealing airbag (15).

2. The water pollution monitoring device for fishery resources according to claim 1, characterized in that: The sleeve rod (5) is threaded to the outside of the adjusting screw (3), and the front and rear sides of the outer side of the sleeve rod (5) are fixedly connected to the limiting blocks (13). The inner wall of the fixing box (2) is provided with a sliding groove (14), and the limiting block (13) is slidably connected inside the sliding groove (14).

3. The device for monitoring water pollution of fishery resources according to claim 2, characterized in that: The left and right sides of the fixed box (2) are rotatably connected to connecting rods (10), and the inner side of the connecting rods (10) is fixedly connected to a contact rod (11), and the outer side of the connecting rods (10) is fixedly connected to a water stirring rod (8). A torsion spring (9) is fixedly connected between the side of the connecting rods (10) and the fixed box (2).

4. The fishery resource water pollution monitoring equipment according to claim 3, characterized in that: The sleeve rod (5) is fixedly connected to the left and right sides at equal intervals with the abutment frame (12). When the sleeve rod (5) moves vertically, the abutment frame (12) and the abutment rod (11) come into contact, and the water stirring rod (8) is driven to rotate through the connecting rod (10). The water is stirred by the water stirring rod (8).

5. A fishery resource water pollution monitoring device according to claim 4, characterized in that: The monitoring barrel (6) is fixedly connected to an air storage bladder (16), which is arranged in a ring structure and is connected to the other end of the connecting hose (22).

6. A fishery resource water pollution monitoring device according to claim 5, characterized in that: An abutment airbag (24) is provided through the lower part of the gas storage airbag (16). A compression frame (25) is fixedly connected to the side of the support frame (17), and the compression frame (25) is positioned opposite to the abutment airbag (24). When the support frame (17) rotates in the opposite direction, the compression frame (25) compresses the abutment airbag (24).

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