Online dissolved oxygen monitoring instrument for rivers with flow velocity compensation function

Abstract

This utility model discloses an online dissolved oxygen monitoring instrument for rivers with flow velocity compensation function, relating to the field of river water monitoring technology. It includes a monitoring box with an inlet on one side, a first filter screen fixedly installed inside the inlet, and a second filter screen movably installed inside the monitoring box, the second filter screen abutting against the first filter screen. A fixing member is provided at the top of the second filter screen, and a fixing cavity is formed within the fixing member. A fixing disk is rotatably installed within the fixing cavity. A lead screw is threaded into the top of the monitoring box, and the bottom end of the lead screw extends rotatably into the fixing cavity. By rotating the lead screw, the lead screw and the fixing disk can rotate and move upwards simultaneously. During this process, the mesh openings of the second and first filter screens will misalign and interlock, thereby controlling the size of the holes through which water passes. This allows it to be applied to the monitoring of different river flows, enabling the monitoring device to have a flow velocity compensation function and improving monitoring accuracy.

Description

Technical Field

[0001] This utility model relates to the field of river water monitoring technology, specifically to an online dissolved oxygen monitoring instrument for rivers with flow velocity compensation function. Background Technology

[0002] Dissolved oxygen (DO) content is one of the important indicators for measuring the quality of aquatic environments. Maintaining a certain level of dissolved oxygen is crucial for the healthy ecological environment of aquatic bodies; excessively low DO levels can have serious impacts on aquatic ecosystems and biological resources.

[0003] The main sources of dissolved oxygen (DO) in water bodies include atmospheric reoxygenation and oxygen release from biological photosynthesis. The consumption of DO in water bodies is also a natural phenomenon. When the supply of dissolved oxygen decreases or is excessively consumed, causing the DO concentration in the water body to fall below 0.19 mmol / L, hypoxia will occur. Therefore, it is necessary to use an online dissolved oxygen monitoring instrument for rivers to monitor the dissolved oxygen content in the water bodies.

[0004] However, existing online dissolved oxygen monitoring instruments for rivers usually do not have the function of flow velocity compensation. This means that when the water flow velocity is too low (e.g., <0.3m / s), the electrochemical sensor is prone to reading low due to insufficient oxygen diffusion, while the reading will be too high when the water flow is too fast.

[0005] To address these issues, we designed an online dissolved oxygen monitoring instrument for rivers with flow velocity compensation. Utility Model Content

[0006] The purpose of this invention is to provide an online dissolved oxygen monitoring instrument for rivers with flow velocity compensation function, so as to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides an online dissolved oxygen monitoring instrument for rivers with flow velocity compensation function, comprising a monitoring box with an inlet on one side, a first filter screen fixedly installed inside the inlet, a second filter screen movably installed inside the monitoring box, the second filter screen abutting against the first filter screen, a fixing member installed on the top of the second filter screen, a fixing cavity opened inside the fixing member, a fixing plate rotatably installed inside the fixing cavity, a lead screw threaded into the top of the monitoring box, the bottom end of the lead screw rotatably extending into the fixing cavity and fixedly connected to the fixing plate.

[0008] Furthermore, a drain pipe is fixedly connected to the side of the monitoring box away from the water inlet, and a monitor is installed inside the monitoring box. The monitor, the water inlet, and the drain pipe are all located on the same horizontal line.

[0009] Furthermore, a torsion block is fixedly installed at the top of the lead screw, the diameter of the torsion block being larger than the diameter of the lead screw, and the outer surface of the lead screw is provided with anti-slip texture.

[0010] Furthermore, the monitoring box has a threaded hole that communicates with the interior, and the lead screw is threaded into the threaded hole.

[0011] Furthermore, a spring is fixedly installed at the bottom of the torsion block, and a permanent magnet is provided at the other end of the spring. The monitoring box is made of iron and is magnetically connected to the permanent magnet. A telescopic rod is also provided between the torsion block and the permanent magnet, and the spring is movably sleeved on the telescopic rod.

[0012] Furthermore, an iron column is fixedly installed on one side of the bottom of the torsion block, and the iron column is magnetically connected to the permanent magnet and cooperates to resist it.

[0013] Furthermore, a pull block is fixedly installed on one side of the top of the permanent magnet, and the outer surface of the pull block is provided with multiple anti-slip particles.

[0014] Furthermore, a piston rod is fixedly installed on the bottom wall of the monitoring box, and the piston end of the piston rod is fixedly connected to the bottom of the second filter screen.

[0015] Furthermore, multiple positioning plates are fixedly installed at equal intervals on the rear side of the top of the monitoring box, and positioning bolts are threaded into the front side of the positioning plates.

[0016] Compared with the prior art, the beneficial effects of this utility model are: by rotating the lead screw, the lead screw and the fixed plate can rotate and move upward at the same time. During this process, the mesh of the second filter screen and the first filter screen will be misaligned and interlocked, thereby controlling the size of the holes through which the water passes. This can be applied to the monitoring of water flow in different rivers, enabling the monitoring equipment to have the function of flow velocity compensation and improving the accuracy of monitoring.

[0017] Compared with the prior art, the beneficial effects of this utility model are: through the cooperation of the spring and the permanent magnet, the elastic force of the spring can push the permanent magnet to move downward and make the permanent magnet attract to the top of the monitoring box, thereby limiting the torsion block and avoiding the influence of external wind force and other factors on the stability of the torsion block.

[0018] Compared with the prior art, the beneficial effects of this utility model are: by pulling the pull block upward, the pull block can drive the permanent magnet to move upward until the permanent magnet is attracted to the iron column. This can simply limit the position of the permanent magnet, making it convenient for personnel to rotate the twisting block, thus bringing convenience to personnel. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the front exterior of this utility model; Figure 2 This is a three-dimensional structural schematic diagram of the internal half-section of this utility model; Figure 3This is a three-dimensional structural diagram of the external side of this utility model; Figure 4 This utility model Figure 2 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Monitoring box; 2. Water inlet; 3. Drain pipe; 4. Monitor; 5. First filter screen; 6. Second filter screen; 7. Fixed cavity; 8. Fixed plate; 9. Lead screw; 10. Torque block; 11. Threaded hole; 12. Spring; 13. Permanent magnet; 14. Iron column; 15. Telescopic rod; 16. Pull block; 17. Piston rod; 18. Positioning plate; 19. Positioning bolt; 20. Fixing component. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution: an online dissolved oxygen monitoring instrument for rivers with flow velocity compensation function, including a monitoring box 1 with an inlet 2 on one side, a first filter screen 5 fixedly installed in the inlet 2, a second filter screen 6 movably installed in the monitoring box 1, the second filter screen 6 abutting against the first filter screen 5, a fixing member 20 installed on the top of the second filter screen 6, a fixing cavity 7 opened in the fixing member 20, a fixing plate 8 rotatably installed in the fixing cavity 7, a screw rod 9 threadedly inserted into the top of the monitoring box 1, the bottom end of the screw rod 9 rotatably extending into the fixing cavity 7 and fixedly connected to the fixing plate 8; A drain pipe 3 is fixedly connected to the side of the monitoring box 1 away from the water inlet 2. A monitor 4 is installed inside the monitoring box 1. The monitor 4, the water inlet 2, and the drain pipe 3 are all on the same horizontal line. A threaded hole 11 is opened inside the monitoring box 1 and is connected to the inside. The lead screw 9 is threaded into the threaded hole 11.

[0023] In practice, water flows into the monitoring box 1 through the inlet 2, and then the dissolved oxygen in the water is detected by the monitor 4. Finally, the water is discharged through the drain pipe 3. During the above operation, by rotating the torsion block 10, the torsion block 10 can drive the lead screw 9 and the fixed plate 8 to rotate and move upward. During this process, the mesh holes on the second filter screen 6 and the first filter screen 5 will be misaligned and interlocked, thereby controlling the size of the holes through which the water passes. This can be applied to the monitoring of water flow in different rivers, enabling the monitoring equipment to have the function of flow velocity compensation and improving the accuracy of monitoring.

[0024] Furthermore, monitor 4 is an intelligent device used to measure the dissolved oxygen concentration in water in real time. It typically consists of three parts: a dissolved oxygen sensor, a data acquisition and transmission module, and a host or remote platform. Fluorescence technology is preferred. Its basic principle is as follows: the surface of the dissolved oxygen sensor probe is coated with a fluorescent substance, and oxygen will suppress the fluorescence intensity; the instrument emits blue light to excite the fluorescent substance, and at the same time detects the fluorescence decay time. The decay time is inversely proportional to the dissolved oxygen concentration, and then the DO value is calculated. Since monitor 4 is existing technology and is not a problem that needs to be solved in the background technology of this specification, it will not be described in detail.

[0025] See Figure 1-4 A torsion block 10 is fixedly installed at the top of the lead screw 9. The diameter of the torsion block 10 is larger than that of the lead screw 9, and the outer surface of the lead screw 9 is provided with anti-slip texture. Rotating the torsion block 10 will cause the torsion block 10 to drive the lead screw 9 to rotate. Since the diameter of the torsion block 10 is larger than that of the lead screw 9, it is easier for the operator to rotate the lead screw 9. In addition, the anti-slip texture on the torsion block 10 can increase the friction between the operator's hand and the torsion block 10, thereby helping to solve the problem of slippage when the operator rotates the torsion block 10.

[0026] See Figure 1-4 A spring 12 is fixedly installed at the bottom of the torsion block 10, and a permanent magnet 13 is provided at the other end of the spring 12. The monitoring box 1 is made of iron and is magnetically connected to the permanent magnet 13. A telescopic rod 15 is also provided between the torsion block 10 and the permanent magnet 13, and the spring 12 is movably sleeved on the telescopic rod 15.

[0027] In specific implementation, based on the above implementation, after the twist block 10 has rotated, the elastic force of the spring 12 can push the permanent magnet 13 to move downward, and make the permanent magnet 13 attract to the top of the monitoring box 1, thereby limiting the twist block 10 and preventing external wind and other factors from affecting the stability of the twist block 10.

[0028] See Figure 1-4 An iron column 14 is fixedly installed on one side of the bottom of the twist block 10. The iron column 14 is magnetically connected to the permanent magnet 13 and they are mutually abutting. A pull block 16 is fixedly installed on one side of the top of the permanent magnet 13. Multiple anti-slip particles are provided on the outer surface of the pull block 16.

[0029] In specific implementation, based on the above implementation, by pulling the pull block 16 upward, the pull block 16 can drive the permanent magnet 13 to move upward until the permanent magnet 13 is attracted to the iron column 14. This can simply limit the position of the permanent magnet 13, making it convenient for personnel to rotate the twist block 10, which brings convenience to personnel.

[0030] It should be noted that the permanent magnet 13 can only be automatically attracted to the iron column 14 when it moves upward to half the total distance from the iron column 14. This eliminates concerns about the stability of the iron column 14 automatically attracting the permanent magnet 13 without human intervention.

[0031] See Figure 1-4 A piston rod 17 is fixedly installed on the bottom wall of the monitoring box 1, and the piston end of the piston rod 17 is fixedly connected to the bottom of the second filter screen 6. By setting the piston rod 17, the telescopic end of the piston rod 17 can be extended when the second filter screen 6 moves upward, which can limit the movement of the second filter screen 6 and prevent the second filter screen 6 from deviating.

[0032] See Figure 1-4 Multiple positioning plates 18 are fixedly installed at equal intervals on the rear side of the top of the monitoring box 1, and positioning bolts 19 are threaded into the front side of the positioning plates 18. With the positioning plates 18, the monitoring box 1 can be easily installed in a suitable position on the inner wall of the river, and the inlet 2 can be completely submerged in the river, so that the flowing water can easily enter the inlet 2.

[0033] Working principle: Before use, all electrical appliances involved in the monitoring instrument need to be connected to an external power source, or a battery pack needs to be installed in an area outside the monitoring box 1 that does not obstruct other components. Then, the battery pack is connected to the electrical appliances through wiring. It is also necessary to avoid the wiring from getting tangled due to the movement of the components. Wiring needs to be buried and planned, and the battery pack needs to be waterproofed and cooled. This will provide power to the electrical appliances, thus ensuring their normal operation and switching. Since connecting the electrical appliances to an external power source or setting up a battery pack for power supply are existing technologies and are not problems that need to be solved in the background technology of this manual, they will not be explained in detail.

[0034] When in use, first install the monitoring box 1, along with the positioning plate 18 and positioning bolt 19, in a suitable position in the river channel, and make the inlet 2 completely submerged in the river channel. The water will flow into the monitoring box 1 through the inlet 2. Then, the dissolved oxygen in the water will be detected by the monitor 4. Finally, the water will be discharged through the drain pipe 3.

[0035] During the above operation, by rotating the torsion block 10, the torsion block 10 can drive the lead screw 9 and the fixed plate 8 to rotate and move upward. During this process, the mesh holes on the second filter screen 6 and the first filter screen 5 will be misaligned and interlocked, thereby controlling the size of the holes through which the water passes. This can be applied to the monitoring of water flow in different rivers, enabling the monitoring equipment to have the function of flow velocity compensation and improving the accuracy of monitoring.

[0036] During the above operation, the extension end of the piston rod 17 will extend as the second filter 6 moves upward, which can limit the movement of the second filter 6 and prevent the second filter 6 from deviating.

[0037] After the torsion block 10 is rotated, the elastic force of the spring 12 can push the permanent magnet 13 downward and make the permanent magnet 13 attract to the top of the monitoring box 1, thereby limiting the torsion block 10 and preventing external wind and other factors from affecting the stability of the torsion block 10. In addition, by pulling the pull block 16 upward, the pull block 16 can drive the permanent magnet 13 upward until the permanent magnet 13 attracts to the iron column 14, which can simply limit the permanent magnet 13 and make it convenient for personnel to rotate the torsion block 10.

Claims

1. A river dissolved oxygen online monitoring instrument with flow velocity compensation function, comprising a monitoring box (1) with an inlet (2) on one side, characterized in that, A first filter screen (5) is fixedly installed inside the water inlet (2), and a second filter screen (6) is movably installed inside the monitoring box (1). The second filter screen (6) abuts against the first filter screen (5). A fixing member (20) is installed on the top of the second filter screen (6). A fixing cavity (7) is opened inside the fixing member (20). A fixing plate (8) is rotatably installed inside the fixing cavity (7). A screw rod (9) is threaded into the top of the monitoring box (1). The bottom end of the screw rod (9) rotatably extends into the fixing cavity (7) and is fixedly connected to the fixing plate (8).

2. The online dissolved oxygen monitoring instrument for rivers with flow velocity compensation function as described in claim 1, characterized in that: A drain pipe (3) is fixedly connected to the side of the monitoring box (1) away from the water inlet (2). A monitor (4) is installed inside the monitoring box (1). The monitor (4), the water inlet (2), and the drain pipe (3) are all located on the same horizontal line.

3. The online dissolved oxygen monitoring instrument for rivers with flow velocity compensation function as described in claim 1, characterized in that: A torsion block (10) is fixedly installed at the top of the lead screw (9). The diameter of the torsion block (10) is larger than the diameter of the lead screw (9). The outer surface of the lead screw (9) is provided with anti-slip texture.

4. The online dissolved oxygen monitoring instrument for rivers with flow velocity compensation function as described in claim 1, characterized in that: The monitoring box (1) has a threaded hole (11) that communicates with the interior, and the lead screw (9) is threaded into the threaded hole (11).

5. The online dissolved oxygen monitoring instrument for rivers with flow velocity compensation function as described in claim 3, characterized in that: A spring (12) is fixedly installed at the bottom of the torsion block (10), and a permanent magnet (13) is provided at the other end of the spring (12). The monitoring box (1) is made of iron and is magnetically connected to the permanent magnet (13). A telescopic rod (15) is also provided between the torsion block (10) and the permanent magnet (13), and the spring (12) is movably sleeved on the telescopic rod (15).

6. The online dissolved oxygen monitoring instrument for rivers with flow velocity compensation function as described in claim 5, characterized in that: An iron column (14) is fixedly installed on one side of the bottom of the twist block (10). The iron column (14) is magnetically connected to the permanent magnet (13) and they are mutually resisted.

7. The online dissolved oxygen monitoring instrument for rivers with flow velocity compensation function as described in claim 5, characterized in that: A pull block (16) is fixedly installed on one side of the top of the permanent magnet (13), and the outer surface of the pull block (16) is provided with multiple anti-slip particles.

8. The online dissolved oxygen monitoring instrument for rivers with flow velocity compensation function as described in claim 1, characterized in that: A piston rod (17) is fixedly installed on the bottom wall of the monitoring box (1), and the piston end of the piston rod (17) is fixedly connected to the bottom of the second filter screen (6).

9. The online dissolved oxygen monitoring instrument for rivers with flow velocity compensation function as described in claim 1, characterized in that: Multiple positioning plates (18) are fixedly installed at equal intervals on the rear side of the top of the monitoring box (1), and positioning bolts (19) are threaded into the front side of the positioning plates (18).

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