A water quality monitoring device for environmental protection

Abstract

The present invention discloses a water quality monitoring device for environmental protection, which relates to the technical field of water quality monitoring. It includes a support plate. A connecting frame is fixedly connected to the top of the support plate, and a screw rod is rotatably connected to the center of the connecting frame. A sampling box is threadedly connected to the outer wall of the screw rod, and a number of storage cavities are opened at the top of the sampling box. A transmission mechanism is arranged at the top of the connecting frame to enable the number of storage cavities to sample water at different depths when water quality sampling is carried out. A filtering mechanism is arranged inside the storage cavity to filter the sampled water quality after water quality sampling. In this water quality monitoring device for environmental protection, the screw rod is rotated by a servo motor to make the sampling box descend uniformly and sample. At the same time, the cooperation of the convex block and the convex angle is used to align the through hole with the storage cavity to collect water samples at different depths. This design improves the accuracy of water quality analysis, saves time and labor costs, and improves the monitoring efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality monitoring, and specifically to a water quality monitoring device for environmental protection. Background Art

[0002] Water is the source of life. Humans are inseparable from water in their living and production activities. The quality of domestic drinking water is closely related to human health. People's requirements for the quality of domestic drinking water are constantly increasing, and the drinking water quality standards are also correspondingly continuously developed and improved. However, with the progress of industry, the development of society, and the intensification of human activities, a large amount of pollutants have entered drinking water sources such as lakes and rivers, resulting in certain damage to the ecological systems and water quality in drinking water sources. This not only affects the extraction of drinking water but also damages biological resources. Therefore, in order to protect people's physical health and life safety, it is necessary to conduct long-term and regular scientific monitoring of the water quality of drinking water sources, and at the same time, water quality sampling and testing work can be carried out when needed.

[0003] During the process of sampling water quality by general equipment, usually only single sampling can be carried out each time. This limitation is particularly prominent when it is necessary to obtain water quality samples at different depths or multiple water quality samples at the same depth. To complete these complex water quality monitoring tasks, operators need to lower the sampling container multiple times and complete each water quality sampling work one by one.

[0004] This process of lowering the sampling container multiple times is not only cumbersome but also has a significant impact on work efficiency. Each lowering and recovery of the sampling container requires a certain amount of time and manpower. Especially in deep waters or waters that are difficult to access, this process may be more time-consuming and laborious. At the same time, multiple operations may also increase the risk of equipment damage or data errors because each operation may introduce new variables or uncertainties. Summary of the Invention

[0005] The purpose of the present invention is to provide a water quality monitoring device for environmental protection to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A water quality monitoring device for environmental protection, including a support plate. The top of the support plate is fixedly connected with a connecting frame, and a screw rod is rotatably connected to the center of the connecting frame. The outer wall of the screw rod is threadedly connected with a sampling box, and a plurality of storage cavities are opened at the top of the sampling box;

[0007] A transmission mechanism is arranged at the top of the connecting frame to enable the plurality of storage cavities to sample water at different depths when conducting water quality sampling;

[0008] A filtering mechanism is arranged inside the storage cavity to filter the sampled water quality after water quality sampling.

[0009] Preferably, the transmission mechanism includes a housing, the inner wall of the housing is fixedly connected with a rotating shaft, and the outer wall of the rotating shaft is rotatably connected with a gear. The inner wall of the housing is rotatably connected with a ratchet wheel, and an internal tooth is formed through the center of the ratchet wheel. The bottom of the housing is rotatably connected with a rotating rod, and one end of the rotating rod close to the internal tooth is rotatably connected with a pawl. One end of the rotating rod close to the internal tooth is fixedly connected with a torsion spring.

[0010] Preferably, the outer wall teeth of the ratchet wheel are meshed with the teeth of the gear in a matching manner, the inner wall of the internal tooth is meshed with the outer wall of the pawl in a matching manner, the end of the torsion spring is fixedly connected to the side wall of the pawl, and a tooth groove is formed in the outer wall of the screw rod. The teeth of the gear are meshed with the inner wall of the tooth groove in a matching manner.

[0011] Preferably, a sliding rod is fixedly connected to the bottom of the connecting frame, and a plurality of convex blocks are fixedly connected to the outer wall of the rotating rod. An inclined block is fixedly connected to the outer wall of the rotating rod. The top of the sampling box is rotatably connected with a sealing cover, and a plurality of convex corners are fixedly connected to the outer wall of the sealing cover. A through hole is formed through the top of the sealing cover.

[0012] Preferably, a fixing block is fixedly connected to the outer wall of the sampling box, and the inside of the fixing block is slidably connected to the outer wall of the sliding rod. A drain hole is formed through the side wall of the storage cavity.

[0013] Preferably, the filtering mechanism includes a slider, and a filter screen is fixedly installed on the top of the slider. A first tension spring is fixedly connected to the bottom of the filter screen, and one end of the first tension spring far away from the filter screen is fixedly connected to the bottom of the storage cavity. An inclined groove is formed in the outer wall of the slider.

[0014] Preferably, an installation hole is formed through the side wall of the storage cavity, and a resisting block is slidably connected to the inner wall of the installation hole. A second tension spring is fixedly connected to the side wall of the resisting block, and one end of the second tension spring far away from the resisting block is fixedly connected to the inner wall of the installation hole. The outer wall of the slider is slidably connected to the inner wall of the storage cavity.

[0015] Preferably, a hydraulic rod is fixedly installed on the top of the support plate, and an output shaft of the hydraulic rod is fixedly connected with a mounting plate. A resisting rod is fixedly connected to the side wall of the mounting plate, and a detection component is fixedly installed on the top of the mounting plate. One end of the resisting rod far away from the mounting plate corresponds to the inner wall of the installation hole.

[0016] Preferably, a servo motor is fixedly installed on the top of the screw rod. A support frame is rotatably connected to the outer wall of the support plate, and an air bag is rotatably connected to one end of the support frame far away from the support plate.

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

[0018] 1. When sampling and detection are required, drive the servo motor to drive the screw to rotate, so that the sampling box moves downward at a uniform speed and performs sampling work. At the same time, multiple bumps squeeze the convex corners, causing the through holes to rotate multiple times to correspond to multiple storage cavities, so as to complete the collection of water samples at different depths. Water bodies at different depths may be affected by different pollution sources or environmental factors, which can more accurately reflect the changes in water quality at different depths, improve the accuracy of water quality analysis, thus saving time and labor costs, not only improving the monitoring efficiency, but also reducing the operation difficulty and error risk.

[0019] 2. When it is sensed that the sampling is completed, the automatic drive hydraulic rod can drive the abutting rod to squeeze the abutting block, so that the slider slides upward along the inner wall of the storage cavity, so that the water quality flows through the filter screen and the drain hole into the detection component, and then the water quality detection work is carried out. By filtering the values through the filtering mechanism, it is possible to prevent the wear and blockage of the detection component by suspended solids, particulate matter, etc. in the water, thus extending the service life of the device, and at the same time being able to avoid measurement errors caused by impurity interference, thereby improving the accuracy of monitoring data. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall structural schematic diagram of the present invention;

[0021] Figure 2 is the partial structural schematic diagram of the present invention;

[0022] Figure 3 is of the present invention Figure 1 magnified view of part A;

[0023] Figure 4 is the structural sectional view of the transmission mechanism of the present invention;

[0024] Figure 5 is the structural connection sectional view of the partial part of the present invention;

[0025] Figure 6 is the structural connection sectional view of the filtering mechanism of the present invention;

[0026] Figure 7 is the partial structural schematic diagram of the present invention.

[0027] In the figure: 1, support plate; 2, connecting frame; 3, screw; 4, sampling box; 5, storage cavity; 6, transmission mechanism; 7, tooth groove; 8, convex block; 9, inclined block; 10, sealing cover; 11, convex angle; 12, through hole; 13, fixed block; 14, slide bar; 15, drain hole; 16, mounting hole; 17, filtering mechanism; 18, hydraulic rod; 19, mounting plate; 20, abutting rod; 21, detection component; 22, servo motor; 23, support frame; 24, airbag; 601, outer shell; 602, rotating shaft; 603, gear; 604, ratchet; 605, internal tooth; 606, rotating rod; 607, ratchet pawl; 608, torsion spring; 1701, slider; 1702, filter screen; 1703, first tension spring; 1704, inclined groove; 1705, abutting block; 1706, second tension spring. Detailed implementation mode

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1:

[0029] Please refer to Figures 1-7 , the present invention provides a technical solution: an environmental protection water quality monitoring device, including a support plate 1, a connecting frame 2 is fixedly connected to the top of the support plate 1, and a screw 3 is rotatably connected to the center of the connecting frame 2. The outer wall of the screw 3 is threadedly connected with a sampling box 4, and a plurality of storage cavities 5 are opened at the top of the sampling box 4. A servo motor 22 is fixedly installed at the top of the screw 3;

[0030] A transmission mechanism 6 is arranged at the top of the connecting frame 2 to enable a plurality of storage cavities 5 to sample water at different depths when water quality sampling is carried out;

[0031] Further, the transmission mechanism 6 includes a housing 601. A rotating shaft 602 is fixedly connected to the inner wall of the housing 601, and a gear 603 is rotatably connected to the outer wall of the rotating shaft 602. A ratchet wheel 604 is rotatably connected to the inner wall of the housing 601, and an internal tooth 605 is centrally formed through the ratchet wheel 604. A rotating rod 606 is rotatably connected to the bottom of the housing 601, and a pawl 607 is rotatably connected to one end of the rotating rod 606 close to the internal tooth 605. A torsion spring 608 is fixedly connected to one end of the rotating rod 606 close to the internal tooth 605. The outer teeth on the outer wall of the ratchet wheel 604 are meshed with the teeth on the gear 603 in a matching manner, and the inner wall of the internal tooth 605 is meshed with the outer wall of the pawl 607 in a matching manner. The end of the torsion spring 608 is fixedly connected to the side wall of the pawl 607. A tooth groove 7 is formed on the outer wall of the screw rod 3, and the teeth on the gear 603 are meshed with the inner wall of the tooth groove 7 in a matching manner. A sliding rod 14 is fixedly connected to the bottom of the connecting frame 2. A plurality of convex blocks 8 are fixedly connected to the outer wall of the rotating rod 606, and an inclined block 9 is fixedly connected to the outer wall of the rotating rod 606. A sealing cover 10 is rotatably connected to the top of the sampling box 4, and a plurality of convex corners 11 are fixedly connected to the outer wall of the sealing cover 10. A through hole 12 is formed through the top of the sealing cover 10. A fixing block 13 is fixedly connected to the outer wall of the sampling box 4, and the inside of the fixing block 13 is slidably connected to the outer wall of the sliding rod 14. A drain hole 15 is formed through the side wall of the storage cavity 5;

[0032] More specifically, in this embodiment, to protect people's physical health and life safety, we must conduct long-term, regular, and scientific monitoring of the water quality of drinking water sources. This monitoring work not only helps us promptly understand the changes in water quality but also provides strong data support for formulating effective protection measures. At the same time, within a specified time interval, water quality sampling and testing work need to be carried out to more deeply analyze water quality problems. First, place the device on the water surface for monitoring. The outer wall of the support plate 1 is rotatably connected to the support frame 23, and the end of the support frame 23 away from the support plate 1 is rotatably connected to the airbag 24. The device can be floated on the water surface through multiple airbags 24. By spreading multiple support frames 23, the support area of the device can be increased, reducing the probability of the device being overturned by water waves and the shaking angle. When it is necessary to sample the water quality for in-depth testing, first drive the servo motor 22 to drive the screw 3 to rotate. Since the center of the sampling box 4 is threadedly connected to the outer wall of the screw 3, when the screw 3 rotates, it will drive the sampling box 4 to move downward. Then the sampling box 4 will drive the sealing cover 10 to move synchronously. At the same time, the sampling box 4 will drive the fixed block 13 to slide along the outer wall of the sliding rod 14, enabling the sampling box 4 to be more stable during the downward movement. When the sampling box 4 and the sealing cover 10 move downward below the water surface, at this time, water will enter a storage cavity 5 corresponding to the through hole 12 through the through hole 12, thus completing the sampling work of the shallow water quality. At the same time, when the screw 3 rotates, it will drive the gear 603 to rotate through the tooth groove 7. Then the gear 603 will drive the ratchet wheel 604 to rotate clockwise. Since the end of the pawl 607 is engaged with the inner teeth 605 of the inner wall, the rotation of the ratchet wheel 604 will drive the rotating rod 606 to rotate through the pawl 607. When the rotating rod 606 rotates, it will drive multiple convex blocks 8 to rotate. After that, during the downward movement of the sampling box 4, the convex angle 11 will contact the convex block 8 driven to rotate by the rotating rod 606. Then the rotating convex block 8 will squeeze the corresponding convex angle 11. Then the convex angle 11 will drive the sealing cover 10 to rotate. Then the through hole 12 will disengage from the storage cavity 5 where the sampling has been completed and then rotate to the position of the second storage cavity 5. At this time, the through hole 12 corresponds to the top of the second storage cavity 5, and the water at this depth will enter the inside of the second storage cavity 5. During the subsequent downward movement of the sampling box 4, by driving the rotation of the through hole 12 by the sealing cover 10, the sampling work of the water quality at multiple different depths can be completed;

[0033] After the sampling box 4 drives the storage cavity 5 to complete sampling, the servo motor 22 is driven to rotate in the reverse direction. Then, the tooth groove 7 drives the ratchet wheel 604 to rotate counterclockwise through the gear 603. Since the ratchet wheel 604 rotates counterclockwise, the pawl 607 will not engage with the inner wall of the internal teeth 605, so it will not drive the rotating rod 606 to rotate. After the ratchet wheel 604 stops rotating, the pawl 607 will re-engage with the inner wall of the internal teeth 605 through the elastic force of the torsion spring 608. At the same time, the reverse rotation of the screw rod 3 will drive the sampling box 4 to move upward. Then, the sampling box 4 will drive the sealing cover 10 to move synchronously. After that, the convex angle 11 will contact the bottom inclined surface of the inclined block 9 and be extruded, so that the convex angle 11 drives the sealing cover 10 to rotate a certain distance. The rotated through hole 12 will disengage from the top of the storage cavity 5. At this time, multiple storage cavities 5 are in a sealed state. Then, the sampling box 4 will move upward to the initial position to complete the reset work after sampling;

[0034] As described above, when sampling and detection are required, the servo motor 22 is driven to drive the screw rod 3 to rotate, so that the sampling box 4 moves downward evenly to perform sampling work. At the same time, the convex angle 11 is extruded by multiple convex blocks 8, so that the through hole 12 rotates multiple times to correspond to multiple storage cavities 5, so as to complete the collection of water samples at different depths. Water bodies at different depths may be affected by different pollution sources or environmental factors, which can more accurately reflect the changes in water quality at different depths, improve the accuracy of water quality analysis, save time and labor costs, not only improve the monitoring efficiency, but also reduce the operation difficulty and error risk. Embodiment 2:

[0035] On the basis of the above embodiment, a filtering mechanism 17 is arranged inside the storage cavity 5 to filter the sampled water quality after water quality sampling;

[0036] Further, the filtering mechanism 17 includes a slider 1701, and a filter screen 1702 is fixedly installed on the top of the slider 1701. A first tension spring 1703 is fixedly connected to the bottom of the filter screen 1702, and the end of the first tension spring 1703 away from the filter screen 1702 is fixedly connected to the bottom of the storage cavity 5. An inclined groove 1704 is formed in the outer wall of the slider 1701. An installation hole 16 is formed through the side wall of the storage cavity 5, and a blocking block 1705 is slidably connected to the inner wall of the installation hole 16. A second tension spring 1706 is fixedly connected to the side wall of the blocking block 1705, and the end of the second tension spring 1706 away from the blocking block 1705 is fixedly connected to the inner wall of the installation hole 16. The outer wall of the slider 1701 is slidably connected to the inner wall of the storage cavity 5. A hydraulic rod 18 is fixedly installed on the top of the support plate 1, and a mounting plate 19 is fixedly connected to the output shaft of the hydraulic rod 18. A resisting rod 20 is fixedly connected to the side wall of the mounting plate 19, and a detection assembly 21 is fixedly installed on the top of the mounting plate 19. The end of the resisting rod 20 away from the mounting plate 19 corresponds to the inner wall of the installation hole 16;

[0037] More specifically, in this embodiment, when the sampling is completed, an inductor is provided at a position corresponding to the bottom of the connecting frame 2 and above the sampling box 4. When the sampling box 4 moves upward to the initial position, it will squeeze the inductor, and then the inductor will send a command to the hydraulic rod 18. Then the hydraulic rod 18 is driven to drive the mounting plate 19 of the output shaft to push out. Then the mounting plate 19 will drive the resisting rod 20 to extend into the interior of the installation hole 16. At the same time, the mounting plate 19 will drive the detection assembly 21 to move below the drain hole 15. After that, the resisting rod 20 will squeeze the blocking block 1705, and at the same time, the second tension spring 1706 will be stretched. Then the blocking block 1705 will slide along the inner wall of the installation hole 16 and will squeeze the inner wall of the inclined groove 1704 at the same time. Then it will fit and slide, so that the slider 1701 slides upward along the inner wall of the storage cavity 5, and at the same time, the first tension spring 1703 will also be stretched. After the slider 1701 slides upward, at this time, the interior of the storage cavity 5 will be communicated with the interior of the drain hole 15. Then the water in the storage cavity 5 will be filtered by the filter screen 1702 and then discharged through the drain hole 15. At this time, the detection assembly 21 is located at the outlet of the drain hole 15, so that the water quality enters the detection assembly 21, and the plurality of detection assemblies 21 detect the water quality at different depths, realizing the one-time collection of water samples at multiple depths, which can significantly improve the working efficiency of sampling and detecting the water quality, and at the same time greatly save time and labor costs. After that, the hydraulic rod 18 retracts to drive the resisting rod 20 to disengage from the interior of the installation hole 16. Then the blocking block 1705 will be reset by the pulling force of the second tension spring 1706, and then the slider 1701 will be reset by the pulling force of the first tension spring 1703. After resetting, the slider 1701 will block the drain hole 15 again;

[0038] As described above, when it is sensed that the sampling is completed, the automatic drive of the hydraulic rod 18 can drive the abutting rod 20 to squeeze the abutting block 1705, so that the slider 1701 slides upward along the inner wall of the storage cavity 5, so that the water quality passes through the filter screen 1702 and the drain hole 15 and flows into the detection assembly 21, and then the water quality detection work is carried out. By filtering the numerical value through the filtering mechanism 17, it is possible to prevent the abrasion and blockage of the detection assembly by suspended solids, particulate matters, etc. in the water, thereby extending the service life of the device, and at the same time, it is possible to avoid the measurement error caused by the interference of impurities, thereby improving the accuracy of the monitoring data.

[0039] Working principle: First, place the device on the water surface for monitoring work. The device can be floated on the water surface through multiple air bags 24. The support area of the device can be increased by the diffusion of multiple support frames 23, reducing the probability of the device being overturned by water waves and the shaking angle. When it is necessary to sample the water quality for in-depth detection, drive the servo motor 22 to drive the screw rod 3 to rotate. Since the center of the sampling box 4 is connected to the outer wall of the screw rod 3 by threads, when the screw rod 3 rotates, it will drive the sampling box 4 to move downward. Then the sampling box 4 will drive the sealing cover 10 to move synchronously. At the same time, the sampling box 4 will drive the fixed block 13 to slide along the outer wall of the sliding rod 14, making the sampling box 4 more stable during the downward movement. When the sampling box 4 and the sealing cover 10 move downward below the water surface, at this time, water will enter a storage cavity 5 corresponding to the through hole 12 through the through hole 12, thus completing the sampling work of the water quality at the shallow part. At the same time, when the screw rod 3 rotates, it will drive the gear 603 to rotate through the tooth groove 7. Then the gear 603 will drive the ratchet 604 to rotate clockwise. Since the end of the pawl 607 is engaged with the inner teeth 605, the rotation of the ratchet 604 will drive the rotating rod 606 to rotate through the pawl 607. When the rotating rod 606 rotates, it will drive multiple convex blocks 8 to rotate. Then, during the downward movement of the sampling box 4, the convex angle 11 will contact the convex block 8 driven by the rotating rod 606. Then the rotating convex block 8 will squeeze the corresponding convex angle 11. Then the convex angle 11 will drive the sealing cover 10 to rotate. Then the through hole 12 will be separated from the storage cavity 5 that has completed sampling, and then it will rotate to the position of the second storage cavity 5. At this time, the through hole 12 corresponds to the top of the second storage cavity 5, and the water at this depth will enter the inside of the second storage cavity 5. During the subsequent downward movement of the sampling box 4, by driving the rotation of the through hole 12 by the sealing cover 10, the sampling of the water quality at multiple different depths can be completed;

[0040] After the sampling box 4 drives the storage cavity 5 to complete sampling, the servo motor 22 is driven to rotate in the reverse direction. Then, the tooth groove 7 drives the ratchet wheel 604 to rotate counterclockwise through the gear 603. Since the ratchet wheel 604 rotates counterclockwise, the pawl 607 will not engage with the inner wall of the internal teeth 605, so it will not drive the rotating rod 606 to rotate. After the ratchet wheel 604 stops rotating, the pawl 607 will re-engage with the inner wall of the internal teeth 605 through the elastic force of the torsion spring 608. At the same time, the reverse rotation of the screw rod 3 will drive the sampling box 4 to move upward. Then, the sampling box 4 will drive the sealing cover 10 to move synchronously. After that, the convex angle 11 will contact the bottom inclined surface of the inclined block 9 and be extruded, so that the convex angle 11 drives the sealing cover 10 to rotate for a certain distance. The rotated through hole 12 will be separated from the top of the storage cavity 5. At this time, multiple storage cavities 5 are in a sealed state. Then, the sampling box 4 will move upward to the initial position to complete the reset work after sampling;

[0041] An inductor is arranged at a position corresponding to the bottom of the connecting frame 2 and above the sampling box 4. When the sampling box 4 moves upward to the initial position, it will squeeze the inductor. Then, the inductor will send an instruction to the hydraulic rod 18. Next, the hydraulic rod 18 is driven to drive the mounting plate 19 of the output shaft to be pushed out. Then, the mounting plate 19 will drive the abutting rod 20 to extend into the interior of the mounting hole 16. At the same time, the mounting plate 19 will drive the detection component 21 to move below the drain hole 15. After that, the abutting rod 20 will squeeze the abutting block 1705, and at the same time, the second tension spring 1706 will be stretched. Then, the abutting block 1705 will slide along the inner wall of the mounting hole 16 and squeeze the inner wall of the inclined groove 1704. After that, it will fit and slide, so that the slider 1701 slides upward along the inner wall of the storage cavity 5, and at the same time, the first tension spring 1703 will also be stretched. After the slider 1701 slides upward, the interior of the storage cavity 5 will be communicated with the interior of the drain hole 15 at this time. Then, the water inside the storage cavity 5 will be filtered by the filter screen 1702 and then discharged through the drain hole 15. At this time, the detection component 21 is located at the outlet of the drain hole 15, so that the water quality enters the detection component 21, and multiple detection components 21 detect the water quality at different depths, realizing the one-time collection of water samples at multiple depths, which can significantly improve the working efficiency of sampling and detecting water quality.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmental protection water quality monitoring device, comprising a support plate (1), characterized in that: A connecting frame (2) is fixedly connected to the top of the support plate (1), and a screw rod (3) is rotatably connected to the center of the connecting frame (2). The outer wall of the screw rod (3) is threadedly connected to a sampling box (4), and a plurality of storage cavities (5) are opened at the top of the sampling box (4); A transmission mechanism (6) is arranged at the top of the connecting frame (2) to enable the plurality of storage cavities (5) to sample water at different depths during water quality sampling. A filtering mechanism (17) is arranged inside the storage cavity (5) to filter the sampled water quality after water quality sampling; The transmission mechanism (6) includes a housing (601). A rotating shaft (602) is fixedly connected to the inner wall of the housing (601), and a gear (603) is rotatably connected to the outer wall of the rotating shaft (602); A ratchet wheel (604) is rotatably connected to the inner wall of the housing (601), and an internal tooth (605) is formed through the center of the ratchet wheel (604). A rotating rod (606) is rotatably connected to the bottom of the housing (601), and a ratchet pawl (607) is rotatably connected to one end of the rotating rod (606) close to the internal tooth (605). A torsion spring (608) is fixedly connected to one end of the rotating rod (606) close to the internal tooth (605). A plurality of convex blocks (8) are fixedly connected to the outer wall of the rotating rod (606), and an inclined block (9) is fixedly connected to the outer wall of the rotating rod (606); The outer wall teeth of the ratchet wheel (604) are meshed with the teeth of the gear (603) in a matching manner, and the inner wall of the internal tooth (605) is meshed with the outer wall of the ratchet pawl (607) in a matching manner. The end of the torsion spring (608) is fixedly connected to the side wall of the ratchet pawl (607). A tooth groove (7) is formed in the outer wall of the screw rod (3), and the teeth of the gear (603) are meshed with the inner wall of the tooth groove (7) in a matching manner; A sliding rod (14) is fixedly connected to the bottom of the connecting frame (2). A sealing cover (10) is rotatably connected to the top of the sampling box (4), and a plurality of convex corners (11) are fixedly connected to the outer wall of the sealing cover (10). A through hole (12) is formed through the top of the sealing cover (10); The filtering mechanism (17) includes a slider (1701), and a filter screen (1702) is fixedly installed on the top of the slider (1701). A first tension spring (1703) is fixedly connected to the bottom of the filter screen (1702), and the end of the first tension spring (1703) far from the filter screen (1702) is fixedly connected to the bottom of the storage cavity (5). An inclined groove (1�04) is formed in the outer wall of the slider (1701).

2. The water quality monitoring device for environmental protection according to claim 1, characterized in that, A fixed block (13) is fixedly connected to the outer wall of the sampling box (4), and the inside of the fixed block (13) is slidably connected to the outer wall of the sliding rod (14). A drain hole (15) is formed through the side wall of the storage cavity (5).

3. An environmental protection water quality monitoring device according to claim 1, characterized in that, An installation hole (16) is formed through the side wall of the storage cavity (5), and a blocking block (1705) is slidably connected to the inner wall of the installation hole (16).

4. An environmental protection water quality monitoring device according to claim 3, characterized in that, A second tension spring (1706) is fixedly connected to the side wall of the abutting block (1705), and the end of the second tension spring (1706) away from the abutting block (1705) is fixedly connected to the inner wall of the mounting hole (16). The outer wall of the sliding block (1701) is slidably connected to the inner wall of the storage cavity (5).

5. The water quality monitoring device for environmental protection according to claim 4, characterized in that, A hydraulic rod (18) is fixedly installed on the top of the support plate (1), and the output shaft of the hydraulic rod (18) is fixedly connected to a mounting plate (19).

6. An environmental protection water quality monitoring device according to claim 5, characterized in that, A resisting rod (20) is fixedly connected to the side wall of the mounting plate (19), and a detection assembly (21) is fixedly installed on the top of the mounting plate (19). The end of the resisting rod (20) away from the mounting plate (19) corresponds to the inner wall of the mounting hole (16).

7. An environmental protection water quality monitoring device according to claim 1, characterized in that, A servo motor (22) is fixedly installed on the top of the screw rod (3). A support frame (23) is rotatably connected to the outer wall of the support plate (1), and an airbag (24) is rotatably connected to the end of the support frame (23) away from the support plate (1).

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