Floating type water quality monitoring device

Abstract

The invention relates to the technical field of water quality monitoring, and discloses a floating type water quality monitoring device which comprises a floating body, a power box and a control cabinet are arranged on the two sides of the top of the floating body respectively, a rectangular frame is fixedly connected to the middle of the floating body, and U-shaped plates are fixedly connected to the middles of the two ends of the rectangular frame. A first threaded rod is rotatably connected to the middle of the rectangular frame, a first driving motor is arranged at the top end of the first threaded rod, a first threaded sliding block is slidably connected to the outer wall of the first threaded rod in a threaded mode, sampling barrels are fixedly connected to the diagonal edges of the first threaded sliding block, and liquid inlets are formed in the tops of the sampling barrels. A second limiting disc is connected into the liquid inlet in a sealed and sliding mode. The water area with the same depth can be sampled at the same time through the multiple sampling barrels, so that multiple sampling work is completed; and the water areas with different depths can be subjected to graded sampling through a plurality of sampling barrels, so that the water quality monitoring effect is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality monitoring, and in particular, to a floating water quality monitoring device. Background Art

[0002] Water quality monitoring is a process of monitoring and measuring the types of pollutants in water bodies, the concentrations of various pollutants and their changing trends, and evaluating the water quality status. The monitoring scope is very wide, including unpolluted and polluted natural waters (rivers, lakes, seas, and groundwater) and various industrial wastewater discharges, etc.

[0003] A Chinese patent with the patent publication number CN216386470U discloses a floating water body sampling device for environmental monitoring, including a floating ring: a chassis, which is installed in the middle of the inner side of the floating ring. A remote positioning control device is installed on the upper side inside the chassis, and an antenna is installed at the upper end of the chassis. The lower side of the antenna passes through the chassis and is connected to the remote positioning control device. Moreover, a signal lamp is installed on the left side of the upper end of the chassis. A first rotating shaft is installed at the left end of the chassis. A propeller is installed at the left end of the first rotating shaft, and a first motor is installed on the left side inside the chassis. It can automatically suck water and thus automatically conduct sampling. At the same time, a filtering device is provided at the water suction port to prevent sundries such as branches from entering the interior. The sampling device can be remotely controlled to move on the water, so that the sampling device can sample away from the user. However, when the above device is used, it can only sample and monitor water at the same depth, and cannot conduct multiple samplings and monitorings simultaneously, which easily leads to inaccurate monitoring data and affects the water quality monitoring effect.

[0004] In view of this, the present invention proposes a floating water quality monitoring device to solve the problems existing in the above-mentioned prior art. Summary of the Invention

[0005] The purpose of the present invention is to propose a floating water quality monitoring device to solve the deficiencies existing in the prior art.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions: A floating water quality monitoring device, comprising a floating body, on both sides of the top of the floating body are respectively provided with a power supply box and a control cabinet, the middle of the floating body is fixedly connected with a rectangular frame, and both middle parts of the two ends of the rectangular frame are fixedly connected with U-shaped plates, a first threaded rod is rotatably connected in the middle of the rectangular frame, and a first driving motor is arranged at the top of the first threaded rod, the outer wall of the first threaded rod is in threaded sliding connection with a first threaded slider, and sampling cylinders are fixedly connected to the diagonal edges of the first threaded slider, a liquid inlet is opened at the top of the sampling cylinder, and a second limiting disc is hermetically slidably connected inside the liquid inlet, a through hole is opened in the middle of the second limiting disc, and a filter cylinder is fixedly connected to the inner wall of the through hole, the filter cylinder is slidably connected to the top of the liquid inlet, and a sealing mechanism is arranged at the top of the filter cylinder, mounting grooves are opened on the outer walls of both sides of the rectangular frame and on the outer walls of the U-shaped plates, and depth adjusting mechanisms are arranged inside the mounting grooves, and a drain valve is arranged at the bottom of each sampling cylinder.

[0007] Further, the depth adjusting mechanism comprises a second threaded rod, the second threaded rods are rotatably connected in the mounting grooves, and a second driving motor is arranged at the top of the second threaded rod, the outer wall of the second threaded rod is in threaded sliding connection with a second threaded slider, and a convex block is fixedly connected to the outer wall of the second threaded slider.

[0008] Further, the sealing mechanism comprises four first sliding rods, the four first sliding rods are all hermetically slidably connected to the top of the sampling cylinder, and a first limiting disc is fixedly connected to the bottom end of each first sliding rod, a connecting spring is fixedly connected between the first limiting disc and the sampling cylinder, the top ends of the four first sliding rods are fixedly connected to the same first sealing plate, and the top end of the filter cylinder is fixedly connected to the outer wall of the bottom of the first sealing plate.

[0009] Further, a first mounting frame is fixedly connected to one side of the top of the sampling cylinder, a swing plate is rotatably connected inside the first mounting frame, a pulling rope is fixedly connected between one end of the swing plate and the outer wall of the top of the first sealing plate, and the other end of the swing plate is located directly below the corresponding convex block.

[0010] Further, an air collecting cylinder is fixedly connected to the inner wall of one side above the sampling cylinder, a second sliding rod is hermetically slidably connected to the bottom of the air collecting cylinder, a floating plate is fixedly connected to the bottom end of the second sliding rod, and a piston plate is fixedly connected to the top end of the second sliding rod, and the piston plate is hermetically slidably connected to the inner wall of the air collecting cylinder.

[0011] Further, a receiving cavity is arranged above the air collecting cylinder, a sliding groove is arranged on one side of the receiving cavity, the sliding groove penetrates through the liquid inlet, a second sealing plate is hermetically slidably connected between the receiving cavity and the sliding groove, and the second sealing plate is hermetically slidably connected to the inside of the sliding groove.

[0012] Further, a pushing plate is fixedly connected to one end of the second sealing plate, and the pushing plate is hermetically slidably connected to the inside of the receiving cavity, and an air delivery pipe is communicated between the receiving cavity and the air collecting cylinder.

[0013] Furthermore, mounting brackets II and counterweights are symmetrically and fixedly connected to the outer wall of the top of the floating body. A rotating shaft is rotatably connected to the top of the mounting bracket II. A driving motor III is arranged at the top end of the rotating shaft, and a gear is fixedly connected to the bottom end of the rotating shaft.

[0014] Furthermore, an internal gear is rotatably connected to the top of the floating body, and the internal gear meshes with the gear. A mounting plate is fixedly connected to the outer wall of one side of the internal gear, and a scraper is fixedly connected to the outer wall of the bottom of the mounting plate.

[0015] The beneficial effects of the present invention are as follows: With multiple sampling cylinders, the present invention can simultaneously sample waters at the same depth, thus completing multiple sampling operations; and it can also perform hierarchical sampling on waters at different depths through multiple sampling cylinders, greatly improving the effect of water quality monitoring.

[0016] After the sampling cylinder finishes sampling, the liquid inlet can be sealed by the second sealing plate, thereby preventing garbage and impurities from remaining on the liquid inlet, which may cause the first sealing plate to be unable to seal the top of the liquid inlet, resulting in contamination of the sample in the sampling cylinder.

[0017] By arranging the scraper, it can rotate around the floating body, thereby cleaning the garbage floating around the floating body and preventing excessive garbage from blocking the movement of the floating body. Description of the Drawings

[0018] Figure 1 Structural schematic diagram of a floating water quality monitoring device proposed in Embodiment 1; Figure 2 Overall structural schematic diagram of the rectangular frame of a floating water quality monitoring device proposed in Embodiment 1; Figure 3 Structural schematic diagram of the rectangular frame of a floating water quality monitoring device proposed in Embodiment 1; Figure 4 For a floating water quality monitoring device proposed in Embodiment 1 Figure 2 Enlarged structural schematic diagram at Location A; Figure 5 Cross-sectional structural schematic diagram of the liquid inlet of a floating water quality monitoring device proposed in Embodiment 1; Figure 6 Partial cross-sectional structural schematic diagram of the sampling cylinder of a floating water quality monitoring device proposed in Embodiment 2; Figure 7 Structural schematic diagram of a floating water quality monitoring device proposed in Embodiment 3.

[0019] In the figure: 1, rectangular frame; 2, floating body; 3, power supply box; 4, control cabinet; 5, first threaded rod; 6, sampling cylinder; 7, first threaded slider; 8, first drive motor; 9, second drive motor; 10, second threaded rod; 11, installation groove; 12, U-shaped plate; 13, convex block; 14, second threaded slider; 15, swing plate; 16, first mounting bracket; 17, pulling rope; 18, first sealing plate; 19, liquid inlet; 20, connecting spring; 21, first limiting disc; 22, first sliding rod; 23, filter cylinder; 24, second limiting disc; 25, floating plate; 26, second sliding rod; 27, piston plate; 28, air collecting cylinder; 29, air pipe; 30, accommodating cavity; 31, pushing plate; 32, second sealing plate; 33, sliding groove; 34, gear; 35, scraper; 36, mounting plate; 37, rotating shaft; 38, second mounting bracket; 39, third drive motor; 40, counterweight block; 41, internal gear. Detailed implementation manners

[0020] The technical solution of the present invention will be further described in detail below in conjunction with the specific implementation manners.

[0021] Example 1, referring to Figures 1-5, A floating water quality monitoring device, including a floating body 2. On both sides of the top of the floating body 2, a power supply box 3 and a control cabinet 4 are respectively arranged. In the middle of the floating body 2, a rectangular frame 1 is fixedly connected. And in the middle of both ends of the rectangular frame 1, U-shaped plates 12 are fixedly connected. In the middle of the rectangular frame 1, a first threaded rod 5 is rotatably connected. And at the top of the first threaded rod 5, a first driving motor 8 is arranged. On the outer wall of the first threaded rod 5, a first threaded slider 7 is threadedly slidably connected. And on the diagonal edges of the first threaded slider 7, sampling cylinders 6 are fixedly connected. At the top of the sampling cylinder 6, a liquid inlet 19 is opened. And in the liquid inlet 19, a second limiting disc 24 is hermetically slidably connected. In the middle of the second limiting disc 24, a through hole is opened. And on the inner wall of the through hole, a filter cylinder 23 is fixedly connected. The filter cylinder 23 is slidably connected with the top of the liquid inlet 19. And at the top of the filter cylinder 23, a sealing mechanism is arranged. On the outer walls of both sides of the rectangular frame 1 and the outer walls of the U-shaped plates 12, installation grooves 11 are opened. And in each installation groove 11, a depth adjustment mechanism is arranged. At the bottom of each sampling cylinder 6, a drain valve is arranged. If it is necessary to take samples of water at the same depth multiple times, first, the first driving motor 8 rotates the first threaded rod 5 connected to it, which can make the first threaded slider 7 drive the sampling cylinders 6 on its diagonal edges to move downward along the rectangular frame 1 until the multiple sampling cylinders 6 move to the lowest position. Then, after adjusting the depth adjustment mechanism to the depth where sampling is required, then the first driving motor 8 rotates the first threaded rod 5 connected to it, making the first threaded slider 7 drive the sampling cylinders 6 on its diagonal edges to move upward. During this process, the sealing mechanisms on the multiple sampling cylinders 6 will contact the corresponding depth adjustment mechanisms. As the sampling cylinders 6 continue to move upward, the sealing mechanisms can move upward, making the filter cylinder 23 extend out of the liquid inlet 19 until the sealing mechanisms no longer seal the liquid inlet 19. Thus, the water at this depth will enter the liquid inlet 19 through the filter cylinder 23. The filter cylinder 23 will filter out the impurity solid particles in the water. And the water filtered by the filter cylinder 23 will enter the sampling cylinder 6 through the through hole of the second limiting disc 24. After a period of time, the sampling cylinder 6 will be filled with water at this depth. At this time, the multiple sampling cylinders 6 can be moved upward or continue to move downward to separate the sealing mechanisms from the depth adjustment mechanisms. At this time, the sealing mechanisms seal the liquid inlet 19 again, thus preventing water at different depths from entering the sampling cylinder 6 and contaminating the sample; if it is necessary to take samples of water at different depths simultaneously, first move the multiple sampling cylinders 6 to the lowest position. Then, adjust each depth adjustment mechanism separately to adjust them to different depths. Then make the first threaded slider 7 drive the multiple sampling cylinders 6 to move upward. The depth adjustment mechanism at the lowest position will contact the corresponding sampling cylinder 6. After the sampling cylinder 6 is filled with water, then make the first threaded slider 7 continue to move upward until the depth adjustment mechanism at the highest position contacts the last sampling cylinder 6. When this sampling cylinder 6 is filled with water and the liquid inlet 19 is sealed by the sealing mechanism, the sampling work at different depths is completed. The water in the sampling cylinder 6 can be drained through the drain valve, which is convenient for monitoring it, thus greatly improving the effect of water quality monitoring.

[0022] As a further solution in the present invention, the depth adjustment mechanism includes a threaded rod 10, which is rotatably connected to the mounting groove 11, and a driving motor 9 is arranged at the top of the threaded rod 10, and a threaded slider 14 is threadedly slidably connected to the outer wall of the threaded rod 10, and a protrusion 13 is fixedly connected to the outer wall of the threaded slider 14. The driving motor 9 rotates the threaded rod 10 connected thereto, so that the threaded slider 14 moves downward with the protrusion 13, until the protrusion 13 is moved to the depth required for sampling, and the driving motor 9 stops running.

[0023] As a further solution in the present invention, the sealing mechanism includes four sliding rods 22, and the four sliding rods 22 are all sealingly and slidably connected to the top of the sampling tube 6, and the bottom end of each sliding rod 22 is fixedly connected to a limit plate 21, and a connecting spring 20 is fixedly connected between the limit plate 21 and the sampling tube 6. The top ends of the four sliding rods 22 are all fixedly connected to the same sealing plate 18, and the top end of the filter tube 23 is fixedly connected to the bottom outer wall of the sealing plate 18. Under the elastic force of multiple connecting springs 20, the sealing plate 18 can be tightly abutted against the top of the liquid inlet 19, thereby sealing the liquid inlet 19, and external water will not enter the sampling tube 6.

[0024] As a further solution in the present invention, a mounting frame 16 is fixedly connected to one side of the top of the sampling tube 6, and a swing plate 15 is rotatably connected inside the mounting frame 16. A pulling rope 17 is fixedly connected between one end of the swing plate 15 and the top outer wall of the sealing plate 18, and the other end of the swing plate 15 is located directly below the corresponding protrusion 13. During the upward movement of the sampling tube 6, the swing plate 15 in the top mounting frame 16 will contact the corresponding protrusion 13. As the sampling tube 6 continues to move, under the blocking effect of the protrusion 13, the end of the swing plate 15 that contacts the protrusion 13 will swing downward. Because the swing plate 15 is rotatably connected to the mounting frame 16, The other end of the swing plate 15 will rise and pull the sealing plate 18 through the pulling rope 17 to move the sealing plate 18 upward. At this time, the multiple connecting springs 20 are compressed, so that the sealing plate 18 no longer seals the liquid inlet 19, and the water at the depth of the sampling tube 6 will enter the sampling tube 6 through the liquid inlet 19. At this time, the swing plate 15 will not separate from the protrusion 13 and always keep in contact with it. After a period of time, when the sampling tube 6 is filled with water at this depth, the sampling tube 6 is moved upward or downward to separate the protrusion 13 from the swing plate 15, so that under the action of the rebound force of the multiple connecting springs 20, the sealing plate 18 seals the liquid inlet 19 again.

[0025] Working principle: If it is necessary to take samples from waters at the same depth multiple times, first drive the first motor 8 to rotate the first threaded rod 5 connected thereto, which can cause the first threaded slider 7 to drive the sampling cylinder 6 on its diagonal edge to move downward along the rectangular frame 1 until multiple sampling cylinders 6 move to the lowest position. Then, after adjusting the depth adjustment mechanism to the depth where sampling is required, drive the first motor 8 to rotate the first threaded rod 5 connected thereto, causing the first threaded slider 7 to drive the sampling cylinder 6 on its diagonal edge to move upward. During this process, the sealing mechanisms on multiple sampling cylinders 6 will contact the corresponding depth adjustment mechanisms. As the sampling cylinder 6 continues to move upward, the sealing mechanism can be moved upward, causing the filter cylinder 23 to extend out of the liquid inlet 19 until the sealing mechanism no longer seals the liquid inlet 19. Thus, the water at this depth will enter the liquid inlet 19 through the filter cylinder 23. The filter cylinder 23 will filter out the impurity solid particles in the water, and the water filtered by the filter cylinder 23 will enter the sampling cylinder 6 through the through holes of the second limiting disc 24. After a period of time, the sampling cylinder 6 will be filled with water at this depth. At this time, multiple sampling cylinders 6 can be moved upward or continue to move downward to separate the sealing mechanism from the depth adjustment mechanism. At this time, the sealing mechanism seals the liquid inlet 19 again, thus preventing water at different depths from entering the sampling cylinder 6 and contaminating the sample; If it is necessary to take samples from waters at different depths simultaneously, first move multiple sampling cylinders 6 to the lowest position, then adjust each depth adjustment mechanism separately to different depths, and then drive the first threaded slider 7 to drive multiple sampling cylinders 6 upward. The lowest depth adjustment mechanism will contact the corresponding sampling cylinder 6. After the sampling cylinder 6 is filled with water, then drive the first threaded slider 7 to continue moving upward until the uppermost depth adjustment mechanism contacts the last sampling cylinder 6. When this sampling cylinder 6 is filled with water and the liquid inlet 19 is sealed by the sealing mechanism, the sampling work at different depths is completed. The water in the sampling cylinder 6 can be discharged through the drain valve, which is convenient for monitoring, thus greatly improving the effect of water quality monitoring.

[0026] Example 2, referring to Figures 1-6 , a floating water quality monitoring device. Compared with Example 1, on the basis of Example 1, a gas collecting cylinder 28 is fixedly connected to the inner wall on one side above the sampling cylinder 6, and a second sliding rod 26 is hermetically slidably connected to the bottom of the gas collecting cylinder 28. The bottom end of the second sliding rod 26 is fixedly connected to a floating plate 25, and the top end of the second sliding rod 26 is fixedly connected to a piston plate 27. The piston plate 27 is hermetically slidably connected to the inner wall of the gas collecting cylinder 28. When the sealing mechanism is opened and no longer seals the liquid inlet 19, the water at the depth where the sampling cylinder 6 is located will enter the sampling cylinder 6 through the liquid inlet 19. As the water entering the sampling cylinder 6 gradually increases, the floating plate 25 will float upward, so that the floating plate 25 causes the piston plate 27 in the gas collecting cylinder 28 to move upward through the second sliding rod 26.

[0027] As a further solution in the present invention, a receiving cavity 30 is provided above the air collecting cylinder 28, and a sliding groove 33 is provided on one side of the receiving cavity 30. The sliding groove 33 penetrates through the liquid inlet 19. A second sealing plate 32 is hermetically and slidably connected between the receiving cavity 30 and the sliding groove 33, and the second sealing plate 32 is hermetically and slidably connected to the inside of the sliding groove 33.

[0028] As a further solution in the present invention, one end of the second sealing plate 32 is fixedly connected to a pushing plate 31, and the pushing plate 31 is hermetically and slidably connected to the inside of the receiving cavity 30. A gas transmission pipe 29 is communicated between the receiving cavity 30 and the air collecting cylinder 28, so that the gas in the air collecting cylinder 28 can be squeezed into the receiving cavity 30 through the gas transmission pipe 29. As the gas entering the receiving cavity 30 gradually increases, it can push the pushing plate 31 to move, so that more and more of the second sealing plate 32 enters the sliding groove 33 until the liquid inlet 19 is sealed, thereby preventing garbage and impurities from remaining on the liquid inlet 19, resulting in the first sealing plate 18 being unable to seal the top of the liquid inlet 19 and causing the sample in the sampling cylinder 6 to be contaminated.

[0029] Working principle: When the sealing mechanism is opened and no longer seals the liquid inlet 19, the water at the depth where the sampling cylinder 6 is located will enter the sampling cylinder 6 through the liquid inlet 19. As the water entering the sampling cylinder 6 gradually increases, the floating plate 25 will float upward. Thus, the floating plate 25 makes the piston plate 27 in the air collecting cylinder 28 move upward through the second sliding rod 26, so that the gas in the air collecting cylinder 28 can be squeezed into the receiving cavity 30 through the gas transmission pipe 29. As the gas entering the receiving cavity 30 gradually increases, it can push the pushing plate 31 to move, so that more and more of the second sealing plate 32 enters the sliding groove 33 until the liquid inlet 19 is sealed, thereby preventing garbage and impurities from remaining on the liquid inlet 19, resulting in the first sealing plate 18 being unable to seal the top of the liquid inlet 19 and causing the sample in the sampling cylinder 6 to be contaminated.

[0030] Example 3, referring to Figures 1-7 , a floating water quality monitoring device. Compared with Example 2, on the basis of Example 2, mounting frames two 38 and counterweights 40 are symmetrically and fixedly connected to the outer wall of the top of the floating body 2. A rotating shaft 37 is rotatably connected to the top of the mounting frame two 38. A third driving motor 39 is provided at the top of the rotating shaft 37, and a gear 34 is fixedly connected to the bottom end of the rotating shaft 37. The third driving motor 39 rotates the gear 34 through the rotating shaft 37.

[0031] As a further solution in the present invention, an internal gear 41 is rotatably connected to the top of the floating body 2, and the internal gear 41 meshes with the gear 34. A mounting plate 36 is fixedly connected to the outer wall of one side of the internal gear 41, and a scraper 35 is fixedly connected to the outer wall of the bottom of the mounting plate 36. The internal gear 41 and the floating body 2 are concentric. Since the gear 34 meshes with the internal gear 41, when the gear 34 rotates, the internal gear 41 will rotate. When the internal gear 41 rotates, the scraper 35 below the mounting plate 36 can rotate around the floating body 2, so as to clean the garbage and impurities floating around the floating body 2, and avoid excessive garbage from hindering the movement of the floating body 2.

[0032] Working principle: The drive motor three 39 rotates the gear 34 through the rotating shaft 37. Since the gear 34 meshes with the internal gear 41, when the gear 34 rotates, the internal gear 41 will rotate. When the internal gear 41 rotates, the scraper 35 below the mounting plate 36 can rotate around the floating body 2, so as to clean the garbage and impurities floating around the floating body 2, and avoid excessive garbage from hindering the movement of the floating body 2.

[0033] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A floating water quality monitoring device, comprising a floating body (2), wherein power supply boxes (3) and control cabinets (4) are respectively arranged on both sides of the top of the floating body (2), and is characterized in that, A rectangular frame (1) is fixedly connected to the middle of the floating body (2), and U-shaped plates (12) are fixedly connected to the middle of both ends of the rectangular frame (1). A first threaded rod (5) is rotatably connected to the middle of the rectangular frame (1), and a first driving motor (8) is arranged at the top of the first threaded rod (5). A first threaded slider (7) is threadedly slidably connected to the outer wall of the first threaded rod (5), and sampling cylinders (6) are fixedly connected to the diagonal edges of the first threaded slider (7). A liquid inlet (19) is formed at the top of the sampling cylinder (6), and a second limiting disk (24) is hermetically slidably connected inside the liquid inlet (19). A through hole is formed in the middle of the second limiting disk (24), and a filter cylinder (23) is fixedly connected to the inner wall of the through hole. The filter cylinder (23) is slidably connected to the top of the liquid inlet (19), and a sealing mechanism is arranged at the top of the filter cylinder (23). Installation grooves (11) are formed in the outer walls of both sides of the rectangular frame (1) and the outer walls of the U-shaped plates (12), and depth adjustment mechanisms are arranged inside the installation grooves (11). A drain valve is arranged at the bottom of each sampling cylinder (6).

2. The floating water quality monitoring device according to claim 1, characterized in that, The depth adjustment mechanism includes a second threaded rod (10). The second threaded rods (10) are rotatably connected in the installation grooves (11), and a second driving motor (9) is arranged at the top of the second threaded rod (10). A second threaded slider (14) is threadedly slidably connected to the outer wall of the second threaded rod (10), and a convex block (13) is fixedly connected to the outer wall of the second threaded slider (14).

3. The floating water quality monitoring device according to claim 2, characterized in that, The sealing mechanism includes four first sliding rods (22). The four first sliding rods (22) are hermetically slidably connected to the top of the sampling cylinder (6), and a first limiting disk (21) is fixedly connected to the bottom end of each first sliding rod (22). A connecting spring (20) is fixedly connected between the first limiting disk (21) and the sampling cylinder (6). The top ends of the four first sliding rods (22) are fixedly connected to the same sealing plate one (18), and the top end of the filter cylinder (23) is fixedly connected to the bottom outer wall of the sealing plate one (18).

4. The floating water quality monitoring device according to claim 3, characterized in that, One side of the top of the sampling cylinder (6) is fixedly connected with a first mounting bracket (16), and a swing plate (15) is rotatably connected inside the first mounting bracket (16). A pulling rope (17) is fixedly connected between one end of the swing plate (15) and the top outer wall of the sealing plate one (18), and the other end of the swing plate (15) is located directly below the corresponding convex block (13).

5. The floating water quality monitoring device according to claim 1, characterized in that, A gas collecting cylinder (28) is fixedly connected to the inner wall of one side above the sampling cylinder (6). A second sliding rod (26) is hermetically slidably connected to the bottom of the gas collecting cylinder (28). A floating plate (25) is fixedly connected to the bottom end of the second sliding rod (26), and a piston plate (27) is fixedly connected to the top end of the second sliding rod (26). The piston plate (27) is hermetically slidably connected to the inner wall of the gas collecting cylinder (28).

6. The floating water quality monitoring device according to claim 5, wherein, A receiving cavity (30) is arranged above the gas collecting cylinder (28), and a sliding groove (33) is arranged on one side of the receiving cavity (30). The sliding groove (33) penetrates through the liquid inlet (19). A sealing plate two (32) is hermetically slidably connected between the receiving cavity (30) and the sliding groove (33), and the sealing plate two (32) is hermetically slidably connected inside the sliding groove (33).

7. A floating water quality monitoring device according to claim 6, characterized in that, One end of the second sealing plate (32) is fixedly connected to a push plate (31), and the push plate (31) is hermetically and slidably connected to the inside of the accommodation cavity (30). A gas transmission pipe (29) is connected between the accommodation cavity (30) and the gas collecting cylinder (28).

8. The floating water quality monitoring device according to claim 1, characterized in that, On the outer wall of the top of the floating body (2), a second mounting frame (38) and a counterweight (40) are symmetrically and fixedly connected. The top of the second mounting frame (38) is rotatably connected to a rotating shaft (37). A third driving motor (39) is arranged at the top end of the rotating shaft (37), and a gear (34) is fixedly connected to the bottom end of the rotating shaft (37).

9. The floating water quality monitoring device according to claim 8, wherein, An internal gear (41) is rotatably connected to the top of the floating body (2), and the internal gear (41) meshes with the gear (34). A mounting plate (36) is fixedly connected to the outer wall of one side of the internal gear (41), and a scraping plate (35) is fixedly connected to the outer wall of the bottom of the mounting plate (36).

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