Filtering and sampling device for marine environment monitoring

Abstract

The invention provides a filtering and sampling device for marine environment monitoring, and relates to the technical field of marine environment monitoring, the filtering and sampling device comprises a tank body, a base and a cover plate, one side wall of the tank body is fixedly connected with an adjusting assembly, the interior of the tank body is fixedly connected with a filtering assembly, the base is fixedly connected to the bottom of the tank body, and the cover plate is movably connected to the top of the tank body through a hasp. Through arrangement of the filtering assembly and the adjusting assembly, a servo motor is started, the servo motor drives a rotating rod to rotate through a rotating shaft, and at the moment, the rotating rod drives a fixing frame and a filtering net plate in the fixing frame to filter seawater; the water is discharged into the first multi-way piece through the water outlet pipe arranged at the bottom of the filter box and the connecting branch pipe, and flows into the sampling bottle through the shunting port and the connecting pipeline, so that the device reduces the influence on the nutritive salt circulation mechanism of the whole marine ecosystem, and reduces the possibility that the final analysis result loses accuracy and the sampling time is shortened. And the probability of real evaluation of the marine environment state is influenced.

Description

Technical Field

[0001] The invention relates to the technical field of marine environment monitoring, and in particular to a filtering sampling device for marine environment monitoring. Background Art

[0002] The marine environment refers to the total water area of ​​the vast and continuous ocean on the earth, including seawater, substances dissolved and suspended in seawater, seabed sediments and marine life. It is the cradle of life and a treasure house of human resources. As the scale of human development of marine resources expands, it has been affected and polluted by human activities. In order to protect the marine environment, it is necessary to monitor the marine environment.

[0003] Marine environmental monitoring includes the monitoring of meteorological elements above water and the monitoring of hydrological and water quality elements underwater. By monitoring marine environmental elements, we can understand the types and concentrations of pollutants in the sea area and the migration and transformation patterns of pollutants in the marine environment, so as to propose technologies and measures to prevent and control pollution. Marine environmental monitoring is of great significance to the development of coastal economy, marine scientific research, reducing marine environmental disasters, and improving coastal maritime defense capabilities.

[0004] At present, the main function of the marine environment monitoring sample collection equipment is to obtain a certain amount of seawater, sediment or biological samples and conduct subsequent monitoring and analysis, so as to grasp the degree of pollution of the marine environment. When conducting marine environment monitoring, the primary task is to collect seawater samples. In order to ensure the accuracy of seawater detection, the staff needs to take samples at different positions in the ocean, and the seawater needs to be filtered through a filtering device before the seawater is detected. When the existing marine environment monitoring filtering sampling device is used, first according to the sampling depth of the sampling water area, the height of the control lifting frame is adjusted by turning the turning handle 1, and then the tank body is placed in the seawater for sampling. When sampling, the turning handle 2 is turned to make the pull rope pull the cover body to open the top of the filtering sampling device to let the seawater enter, and then the marine garbage is filtered out through the filter screen, and then the seawater sample of the designated sampling bottle is sampled through the control panel control operation, and the seawater sample is put into the designated sampling bottle. When sampling, the air in the sampling bottle is discharged from the exhaust port after passing through the exhaust pipe, the main air pipe and the exhaust channel. After the sampling is completed, the entire tank is extracted from the seawater by operating the lifting frame, and then the sealed door can be opened to take out the sampling bottle for transfer, storage and testing. However, when using the existing filtration sampling device for marine environment monitoring, it only relies on the filter to filter out larger particles. The filtering effect of a single filter is limited for particles of different particle sizes and cannot meet various testing needs. In addition, different marine environment monitoring projects may have different requirements for filtration accuracy. For example, when studying the nutrient cycle in the marine ecosystem, it is necessary to more accurately control the particle size range of particulate matter in the filtered seawater, which affects the in-depth understanding of the nutrient cycle mechanism of the entire marine ecosystem, and may cause the final analysis results to lose accuracy, affecting the true assessment of the state of the marine environment.

[0005] Therefore, it is necessary to provide a new filtering sampling device for marine environment monitoring to solve the above technical problems. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a filtering sampling device for marine environment monitoring.

[0007] A filtering sampling device for marine environment monitoring provided by the present invention comprises a tank body, a base and a cover plate, wherein an adjusting component is fixedly connected to a side wall of one side of the tank body, and a filtering component is fixedly connected inside the tank body, the base is fixedly connected to the bottom of the tank body, and the cover plate is movably connected to the top of the tank body through a buckle;

[0008] The filter assembly includes a filter box, a rotating rod, a servo motor, a plurality of fixed frames and a plurality of limit plates. The filter box is fixedly connected to the inside of the tank body, and a water outlet pipe is arranged at the bottom of the filter box. The rotating rod is rotatably connected to the inner wall of the filter box, and one end is fixedly connected to a rotating shaft. The rotating shaft is rotatably connected to the inner wall of a groove opened at the bottom of the filter box. The servo motor is fixedly connected to the bottom of the filter box, and the output end of the servo motor is fixedly connected to one end of the rotating shaft. The plurality of fixed frames are respectively fixedly connected to the outer surface of the rotating rod, and the sliding grooves opened inside the plurality of fixed frames are respectively slidably connected with a plurality of filter screens with different porosity. The plurality of limit plates are movably connected to the inner walls of the grooves opened on the plurality of fixed frames through a plurality of limit mechanisms.

[0009] Preferably, the limit mechanism comprises a connecting frame, a limit column, two mounting blocks and two limit springs, the connecting frame is fixedly connected to one end of the limit plate, and the connecting frame is movably connected to the inner wall of the groove opened on the fixing frame, the two mounting blocks are fixedly connected to the side wall of one side of the limit plate, and the two mounting blocks are provided with mounting holes, the inner thread of the mounting holes is connected to the limit rod, the end of the limit rod away from the mounting hole is slidably connected to the inner wall of the through hole opened on the connecting frame, the limit columns are respectively slidably connected to the inner walls of the grooves opened on the side walls of the two mounting blocks, the two limit springs are respectively sleeved on both ends of the limit columns, one end of the two limit springs is respectively fixedly connected to the inner walls of the limit grooves opened on the side walls of the two mounting blocks, and the two limit springs are away from the inner wall of the limit grooves opened on the side walls of the mounting blocks, and the two limit springs are fixedly connected to rubber pads at one end of the limit grooves opened on the side walls of the mounting blocks.

[0010] Preferably, the adjusting assembly includes a fixed bracket, a connecting plate, a driving frame and a worm gear, the fixed bracket is detachably connected to a side wall of one side of the tank body by bolts, the connecting plate is fixedly connected to one end of the fixed bracket, and a groove is opened at the top of the connecting plate, the driving frame is fixedly connected to the inner wall of the through hole opened on one side of the connecting plate, and the inner wall of the driving block is fixedly connected to a worm through two support frames, one end of the worm is fixedly connected to a rotating handle, the worm gear is rotatably connected to the inner wall of the driving frame through a connecting rod, and the worm gear is meshed with the top of the worm gear, the end of the worm gear away from the driving frame is fixedly connected to a gear through a connecting rod, the side wall of one side of the gear is meshed with a rack, the end of the rack away from the gear is fixedly connected to a lifting rod, and the lifting rod is slidably connected to the inner wall of the groove opened at the top of the connecting plate.

[0011] Preferably, the water outlet pipe arranged at the bottom of the tank body is provided with a connecting branch pipe, and the end of the connecting branch pipe away from the tank body is fixedly connected to a first multi-way piece, and the outer surface of the first multi-way piece is provided with a plurality of diversion ports, and the inside of the tank body is fixedly connected to a fixed orifice plate, and the fixed orifice plate is provided with through holes, and the bottom of the fixed orifice plate is fixedly connected to a second multi-way piece, and the second multi-way piece is provided with a main air pipe and a plurality of exhaust holes, and solenoid valves are provided on the plurality of diversion ports and the plurality of exhaust holes.

[0012] Preferably, a feed door is provided on the top of the cover plate, a fixed block is fixedly connected to the top of the feed door, a pull rope is movably connected to the outer surface of the fixed block, and one end of the pull rope away from the fixed block is connected to a fixed wheel provided on one end of the lifting rod.

[0013] Preferably, a plurality of placement barrels are fixedly connected to the top of the base, the bottom walls of the plurality of placement barrels are provided with threaded nails, and sampling bottles are arranged inside the plurality of placement barrels, and the bottoms of the sampling bottles are provided with threaded holes matching the threaded nails.

[0014] Preferably, a liquid inlet and an exhaust port are provided on the top of the sampling bottle, and control valves are provided on the liquid inlet and the exhaust port on the sampling bottle. The liquid inlet is connected to the diversion port through a diversion tube, and the exhaust port is connected to the exhaust hole through an exhaust pipe.

[0015] Preferably, a control panel is fixedly connected to the top of the lifting rod.

[0016] Preferably, a sealing door is engaged on one side wall of the tank body.

[0017] Compared with the related art, the filtering sampling device for marine environment monitoring provided by the present invention has the following beneficial effects:

[0018] 1. The present invention provides a filter assembly and an adjustment assembly. First, according to the sampling depth of the sampling water area, the rotating handle is rotated, and the rotating handle drives the worm to rotate. When the worm rotates, the worm wheel is driven to rotate, and the worm wheel is driven to rotate through the connecting rod to drive the gear to rotate. At this time, the gear drives the rack and the lifting rod set at one end of the rack to perform lifting and lowering movements, and the fixed wheel is rotated. The fixed wheel drives the pull rope to pull the feed door to open. At this time, seawater will enter the filter box through the water inlet opened on the cover plate. After the seawater is collected, the feed door is closed. At this time, you can choose to filter directly in the water or take the device out of the water for filtering, and then start the servo motor. The servo motor drives the rotating rod to rotate through the rotating shaft. At this time, the rotating rod drives the fixed frame and the filter screen plate inside the fixed frame to filter the seawater. After the filtration is completed, the water is discharged into the first multi-pass member through the outlet pipe and the connecting branch pipe set at the bottom of the filter box, and flows into the sampling bottle through the diversion port and the connecting pipe. This device reduces the impact on the nutrient circulation mechanism of the entire marine ecosystem, and reduces the probability that the final analysis result may lose accuracy and affect the true assessment of the marine environmental state.

[0019] 2. The present invention uses an adjustment component. First, according to the sampling depth of the sampling water area, the rotating handle is rotated. The rotating handle drives the worm to rotate. When the worm rotates, it drives the worm wheel to rotate. At the same time, the worm wheel drives the gear to rotate through the connecting rod. At this time, the rack is driven by the gear and a lifting rod is set at one end of the rack to perform lifting and lowering movements. This device reduces sampling errors caused by shaking or vibration, ensuring the normal operation of the sampling device and the smooth progress of the sampling work.

[0020] 3. When the seawater sample in the sampling bottle reaches a set liquid level, the liquid level sensor returns a signal value to the control box to actively control the sampling of the sampling bottle to stop, which is beneficial to the subsequent standardized analysis and research of the samples and improves the accuracy and comparability of the experimental results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a filtering sampling device for marine environment monitoring provided by the present invention;

[0022] Figure 2 A structural schematic diagram of another perspective provided by the present invention;

[0023] Figure 3 A schematic diagram of a cutaway structure provided by the present invention;

[0024] Figure 4 A schematic diagram of a local explosion structure provided by the present invention;

[0025] Figure 5 A schematic diagram of the structure of the filter assembly provided by the present invention;

[0026] Figure 6 A schematic diagram of a partial structure of a filter assembly provided by the present invention;

[0027] Figure 7 A schematic diagram of the structure of the filter screen plate and the limiting mechanism provided by the present invention;

[0028] Figure 8 A schematic diagram of the cross-section structure of the limiting mechanism provided by the present invention;

[0029] Fig. 9 A schematic diagram of the structure of the adjustment assembly and the control panel provided by the present invention;

[0030] Fig.10 A schematic diagram of the cross-section structure of the adjustment component provided by the present invention;

[0031] Fig.11 This is a schematic diagram of the enlarged structure of A provided by the present invention.

[0032] Numbers in the figure: 1. tank body; 2. base; 3. cover plate; 4. filter box; 5. rotating rod; 6. servo motor; 7. fixing frame; 8. limiting plate; 9. water outlet pipe; 10. filter screen plate; 11. connecting frame; 12. limiting column; 13. mounting block; 14. limiting spring; 15. mounting hole; 16. limiting rod; 17. rubber pad; 18. fixing bracket; 19. connecting plate; 20. driving frame; 21. worm gear; 22. worm; 23. gear; 24. rack; 25. lifting rod; 26. connecting branch pipe; 27. first multi-pass piece; 28. diversion port; 29. ​​fixed orifice plate; 30. second multi-pass piece; 31. exhaust hole; 32. feed door; 33. fixing block; 34. pull rope; 35. placement barrel; 36. sampling bottle; 37. control panel. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0034] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 as well as Fig.11 ,in, Figure 1 A schematic diagram of the structure of a filtering sampling device for marine environment monitoring provided by the present invention; Figure 2 A structural schematic diagram of another perspective provided by the present invention; Figure 3 A schematic diagram of a cutaway structure provided by the present invention; Figure 4A schematic diagram of a local explosion structure provided by the present invention; Figure 5 A schematic diagram of the structure of the filter assembly provided by the present invention; Figure 6 A schematic diagram of a partial structure of a filter assembly provided by the present invention; Figure 7 A schematic diagram of the structure of the filter screen plate and the limiting mechanism provided by the present invention; Figure 8 A schematic diagram of the cross-section structure of the limiting mechanism provided by the present invention; Fig. 9 A schematic diagram of the structure of the adjustment assembly and the control panel provided by the present invention; Fig.10 A schematic diagram of the cross-section structure of the adjustment component provided by the present invention; Fig.11 This is a schematic diagram of the enlarged structure of A provided by the present invention.

[0035] In the specific implementation process, Figures 1 to 8 As shown, an adjusting component is fixedly connected to the side wall of one side of the tank body 1, a sealing door is meshed with the side wall of one side of the tank body 1, and a filtering component is fixedly connected to the inside of the tank body 1, a base 2 is fixedly connected to the bottom of the tank body 1, and a plurality of placement barrels 35 are fixedly connected to the top of the base 2, the bottom walls of the plurality of placement barrels 35 are provided with threaded nails, and sampling bottles 36 are arranged inside the plurality of placement barrels 35, and the bottom of the sampling bottle 36 is provided with threaded holes matching the threaded nails, a liquid inlet bottle port and an exhaust bottle port are arranged on the top of the sampling bottle 36, and control valves are arranged on the liquid inlet bottle port and the exhaust bottle port arranged on the sampling bottle 36, the liquid inlet bottle port is connected to the shunt port 28 through a shunt pipe, and the exhaust bottle port is connected to the exhaust hole 31 through an exhaust pipe, and the cover plate 3 is movably connected to the top of the tank body 1 through a buckle. The filter assembly includes a filter box 4, a rotating rod 5, a servo motor 6, a plurality of fixed frames 7 and a plurality of limiting plates 8. The filter box 4 is fixedly connected to the inside of the tank body 1, and a water outlet pipe 9 is arranged at the bottom of the filter box 4. The rotating rod 5 is rotatably connected to the inner wall of the filter box 4, and one end is fixedly connected to a rotating shaft, and the rotating shaft is rotatably connected to the inner wall of the groove opened at the bottom of the filter box 4. The servo motor 6 is fixedly connected to the bottom of the filter box 4, and the output end of the servo motor 6 is fixedly connected to one end of the rotating shaft. The plurality of fixed frames 7 are respectively fixedly connected to the outer surface of the rotating rod 5, and the interior of the slide grooves opened in the plurality of fixed frames 7 are respectively slidably connected with a plurality of filter screens 10 with different porosity, and the plurality of limiting plates 8 are movably connected to the inner walls of the grooves opened on the plurality of fixed frames 7 through a plurality of limiting mechanisms.

[0036] It should be noted that in the filtering sampling device for marine environment monitoring, the sealing door is an important component, which is usually located at a specific position of the device. This device is installed with a special bracket on the side of the sampling ship, and the filtering sampling device can be fixed to the bracket by bolts, nuts or clamp connectors;

[0037] At the same time, there are 9 placement buckets 35 and sampling bottles 36, so the device supports filtering up to 9 water samples at a time or sampling up to 9 water sources at different depths and locations;

[0038] The filter plates 10 with different porosities can meet different filtering requirements. Different monitoring projects in the marine environment have different requirements for the filtering accuracy of seawater samples. When detecting plankton in seawater, a filter plate with a larger porosity may be required to allow smaller plankton to pass through while filtering out larger impurities. When analyzing tiny particulate matter or specific chemical components in seawater, a filter plate with a small porosity is required to achieve more precise filtering to ensure that the purity of the sample meets the analysis requirements.

[0039] Improve the accuracy of monitoring data. Filter plates with different porosity can effectively separate and filter substances with different particle sizes, thereby avoiding interference of impurities or unnecessary substances on monitoring results.

[0040] The outlet pipe 9 arranged at the bottom of the tank body 1 is provided with a connecting branch pipe 26, and the end of the connecting branch pipe 26 away from the tank body 1 is fixedly connected to a first multi-way piece 27, and the outer surface of the first multi-way piece 27 is provided with a plurality of diversion ports 28, and a fixed orifice plate 29 is fixedly connected inside the tank body 1, and the fixed orifice plate 29 is provided with a through hole, and a second multi-way piece 30 is fixedly connected to the bottom of the fixed orifice plate 29, and the second multi-way piece 30 is provided with a main air pipe and a plurality of exhaust holes 31, and solenoid valves are provided on the plurality of diversion ports 28 and the plurality of exhaust holes 31, and a feed door 32 is provided on the top of the cover plate 3, and a fixed block 33 is fixedly connected to the top of the feed door 32, and a pull rope 34 is movably connected to the outer surface of the fixed block 33, and the end of the pull rope 34 away from the fixed block 33 is connected to a fixed wheel arranged on one end of the lifting rod 25;

[0041] The limiting mechanism includes a connecting frame 11, a limiting column 12, two mounting blocks 13 and two limiting springs 14. The connecting frame 11 is fixedly connected to one end of the limiting plate 8, and the connecting frame 11 is movably connected to the inner wall of the groove opened on the fixing frame 7. The two mounting blocks 13 are fixedly connected to the side wall of one side of the limiting plate 8, and the two mounting blocks 13 are provided with mounting holes 15. The internal thread of the mounting hole 15 is connected to the limiting rod 16. The end of the limiting rod 16 away from the mounting hole 15 is slidably connected to the connecting frame 1 1, the limiting columns 12 are respectively slidably connected to the inner walls of the grooves provided on the side walls of the two mounting blocks 13, the two limiting springs 14 are respectively sleeved on both ends of the limiting columns 12, one end of the two limiting springs 14 is respectively fixedly connected to the inner walls of the limiting grooves provided on the side walls of the two mounting blocks 13, and the two limiting springs 14 are away from the inner walls of the limiting grooves provided on the side walls of the mounting blocks 13, and one end of the two limiting springs 14 away from the limiting grooves provided on the side walls of the mounting blocks 13 is fixedly connected with a rubber pad 17;

[0042] It should be noted that when the seawater sample in the sampling bottle 36 reaches the set liquid level, the liquid level sensor returns a signal value to the control box to actively control the sampling of the sampling bottle 36 to stop. During sampling, the air in the sampling bottle 36 is discharged from the exhaust port after passing through the exhaust pipe, the main air pipe and the exhaust channel.

[0043] When in use, the fixed wheel is rotated, and the fixed wheel drives the pull rope 34 to pull the feed door 32 open. At this time, seawater will enter the filter box 4 through the water inlet opened on the cover plate 3. After the seawater is collected, the feed door 32 is closed. At this time, you can choose to filter directly in the water or take the device out of the water for filtering, and then start the servo motor 6. The servo motor 6 drives the rotating rod 5 to rotate through the rotating shaft. At this time, the rotating rod 5 will drive the fixed frame 7 and the filter screen plate 10 inside the fixed frame 7 to filter the seawater. After the filtration is completed, the seawater is discharged into the first multi-pass member 27 through the outlet pipe 9 and the connecting branch pipe 26 set at the bottom of the filter box 4, and flows into the sampling bottle 36 through the diversion port 28 and the connecting pipe;

[0044] It should be noted that when sampling seawater, there are two sampling methods: 1. Filtering directly in the water, such as opening the feed door when the designated sampling depth is reached, allowing the seawater to enter the filter tank through the feed door, and then closing the feed door. After closing the feed door, turn on the servo motor to filter it;

[0045] 2. When the designated sampling depth is reached, first collect the seawater to be sampled, and then bring the sampling device above sea level for filtering.

[0046] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig. 9 , Fig.10 as well as Fig.11 As shown, the adjustment assembly includes a fixed bracket 18, a connecting plate 19, a driving frame 20 and a worm gear 21. The fixed bracket 18 is detachably connected to the side wall of one side of the tank body 1 by bolts. The connecting plate 19 is fixedly connected to one end of the fixed bracket 18, and a groove is provided on the top of the connecting plate 19. The driving frame 20 is fixedly connected to the inner wall of the through hole provided on one side of the connecting plate 19, and the inner wall of the driving block is fixedly connected to a worm 22 through two support frames, one end of the worm 22 is fixedly connected to a rotating handle, the worm gear 21 is rotatably connected to the inner wall of the driving frame 20 through a connecting rod, and the worm gear 21 is meshed with the top of the worm 22, and one end of the worm gear 21 away from the driving frame 20 is fixedly connected to a gear 23 through a connecting rod, a side wall of one side of the gear 23 is meshed with a rack 24, and one end of the rack 24 away from the gear 23 is fixedly connected to a lifting rod 25, and the lifting rod 25 is slidably connected to the inner wall of the groove provided on the top of the connecting plate 19;

[0047] It should be noted that a control panel 37 is fixedly connected to the top of the lifting rod 25. The control panel 37 is the core control component of the filtering sampling device for marine environment monitoring. It is usually installed in an easily operable position of the device, such as the outside of the tank body 1 or the operating platform. Its function is to centrally control and monitor the various functions of the device to achieve accurate and efficient sampling operations. The functions of the control panel 37 are: 1. Control the sampling process. The sampling parameters, such as sampling depth, sampling time, and sampling volume, can be set and adjusted through the control panel 37; 2. Control the filtration system. The control panel 37 can control the switching or adjustment of the filter screen 10 to meet different filtration accuracy requirements; 3. Manage sample storage. It can control the selection of the sampling bottle 36, the packaging and storage of the sample; 4. Monitor the device status and display the operating status of the device in real time, such as the position of the lifting frame, the opening and closing status of the cover body, and whether the exhaust system is normal. The staff can intuitively understand the working conditions of each part of the device through the display screen or indicator light on the control panel 37, and promptly discover and solve possible faults;

[0048] When in use, according to the sampling depth of the sampling water area, the rotating handle is rotated, and the rotating handle drives the worm 22 to rotate. When the worm 22 rotates, it drives the worm wheel 21 to rotate, and at the same time drives the worm wheel 21 to rotate through the connecting rod to drive the gear 23 to rotate. At this time, the gear 23 drives the rack 24 and the lifting rod 25 set at one end of the rack 24 to perform lifting and lowering movements.

[0049] The circuits and controls involved in the present invention are all prior art and will not be described in detail here. The above description is only an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A filtering sampling device for marine environment monitoring, characterized in that: The invention comprises a tank body (1), a base (2) and a cover plate (3); a side wall of one side of the tank body (1) is fixedly connected to an adjustment component, and a filtering component is fixedly connected inside the tank body (1); the base (2) is fixedly connected to the bottom of the tank body (1), and the cover plate (3) is movably connected to the top of the tank body (1) by means of a buckle; The filter assembly comprises a filter box (4), a rotating rod (5), a servo motor (6), a plurality of fixed frames (7) and a plurality of limit plates (8); the filter box (4) is fixedly connected to the inside of the tank body (1), and a water outlet pipe (9) is arranged at the bottom of the filter box (4); the rotating rod (5) is rotatably connected to the inner wall of the filter box (4), and one end of the rotating rod is fixedly connected to a rotating shaft, and the rotating shaft is rotatably connected to the inner wall of a groove opened at the bottom of the filter box (4); the servo motor (6) is fixedly connected to the bottom of the filter box (4), and the output end of the servo motor (6) is fixedly connected to one end of the rotating shaft; the plurality of fixed frames (7) are respectively fixedly connected to the outer surface of the rotating rod (5), and the interior of the sliding grooves opened in the plurality of fixed frames (7) are respectively slidably connected to a plurality of filter screen plates (10) with different porosities; and the plurality of limit plates (8) are movably connected to the inner walls of the grooves opened on the plurality of fixed frames (7) through a plurality of limit mechanisms.

2. The filtering sampling device for marine environment monitoring according to claim 1, characterized in that: The limiting mechanism comprises a connecting frame (11), a limiting column (12), two mounting blocks (13) and two limiting springs (14); the connecting frame (11) is fixedly connected to one end of the limiting plate (8), and the connecting frame (11) is movably connected to the inner wall of a groove provided on the fixing frame (7); the two mounting blocks (13) are fixedly connected to a side wall of one side of the limiting plate (8), and the two mounting blocks (13) are provided with mounting holes (15); the mounting holes (15) are internally threadedly connected to a limiting rod (16); and the limiting rod (16) is slidably connected to the inner wall of a groove provided on the fixing frame (7) at one end away from the mounting hole (15). The limiting column (12) is connected to the inner wall of the through hole opened on the connecting frame (11), and the limiting column (12) is respectively slidably connected to the inner wall of the groove opened on the side walls of the two mounting blocks (13). The two limiting springs (14) are respectively sleeved on the two ends of the limiting column (12), and one end of the two limiting springs (14) is respectively fixedly connected to the inner wall of the limiting groove opened on the side walls of the two mounting blocks (13), and the two limiting springs (14) are away from the inner wall of the limiting groove opened on the side walls of the mounting blocks (13), and one end of the two limiting springs (14) away from the limiting groove opened on the side walls of the mounting blocks (13) is fixedly connected to a rubber pad (17).

3. The filtering sampling device for marine environment monitoring according to claim 2, characterized in that: The adjustment assembly comprises a fixed bracket (18), a connecting plate (19), a driving frame (20) and a worm gear (21); the fixed bracket (18) is detachably connected to a side wall of a tank body (1) by means of bolts; the connecting plate (19) is fixedly connected to one end of the fixed bracket (18); a groove is provided on the top of the connecting plate (19); the driving frame (20) is fixedly connected to the inner wall of a through hole provided on one side of the connecting plate (19); a worm (22) is fixedly connected to the inner wall of the driving block via two supporting frames; one end of the worm (22) is A rotating handle is fixedly connected, the worm wheel (21) is rotatably connected to the inner wall of the driving frame (20) through a connecting rod, and the worm wheel (21) is meshed with the top of the worm (22), the end of the worm wheel (21) away from the driving frame (20) is fixedly connected to a gear (23) through a connecting rod, a side wall of one side of the gear (23) is meshed with a rack (24), the end of the rack (24) away from the gear (23) is fixedly connected to a lifting rod (25), and the lifting rod (25) is slidably connected to the inner wall of a groove opened at the top of the connecting plate (19).

4. The filtering sampling device for marine environment monitoring according to claim 3 is characterized in that: The water outlet pipe (9) arranged at the bottom of the tank body (1) is provided with a connecting branch pipe (26); the end of the connecting branch pipe (26) away from the tank body (1) is fixedly connected to a first multi-way component (27); the outer surface of the first multi-way component (27) is provided with a plurality of diversion ports (28); the tank body (1) is fixedly connected to a fixed orifice plate (29), and the fixed orifice plate (29) is provided with through holes; the bottom of the fixed orifice plate (29) is fixedly connected to a second multi-way component (30); the second multi-way component (30) is provided with a main air pipe and a plurality of exhaust ports (31); and solenoid valves are provided on the plurality of diversion ports (28) and the plurality of exhaust ports (31).

5. The filtering sampling device for marine environment monitoring according to claim 4, characterized in that: A feed door (32) is arranged on the top of the cover plate (3), a fixed block (33) is fixedly connected to the top of the feed door (32), a pull rope (34) is movably connected to the outer surface of the fixed block (33), and one end of the pull rope (34) away from the fixed block (33) is connected to a fixed wheel arranged on one end of the lifting rod (25).

6. The filtering sampling device for marine environment monitoring according to claim 5, characterized in that: The top of the base (2) is fixedly connected to a plurality of placement barrels (35), the bottom walls of the plurality of placement barrels (35) are provided with threaded nails, and sampling bottles (36) are arranged inside the plurality of placement barrels (35), and the bottoms of the sampling bottles (36) are provided with threaded holes matching the threaded nails.

7. The filtering sampling device for marine environment monitoring according to claim 6, characterized in that: The sampling bottle (36) is provided with a liquid inlet and an exhaust port at the top, and the liquid inlet and exhaust ports provided on the sampling bottle (36) are both provided with control valves. The liquid inlet is connected to the diversion port (28) via a diversion tube, and the exhaust port is connected to the exhaust hole (31) via an exhaust pipe.

8. The filtering sampling device for marine environment monitoring according to claim 7, characterized in that: A control panel (37) is fixedly connected to the top of the lifting rod (25).

9. The filtering sampling device for marine environment monitoring according to claim 8, characterized in that: A sealing door is engaged with a side wall of one side of the tank body (1).

Images