An ecological environment monitoring and sampling device for lakes

Abstract

The present invention relates to the technical field of lake ecological sampling, and discloses a sampling device for monitoring lake ecological environment, which includes an external functional mechanism and a sampling mechanism. The external functional mechanism includes an outer housing, on which a plurality of support feet and a plurality of driving paddles are provided. The sampling mechanism is arranged at the bottom of the outer housing, and the sampling mechanism samples the lake bottom sludge. The sampling mechanism includes an inner housing, a sampler and a sample splitter. The inner housing is fixedly arranged inside the bottom of the outer housing. The sampler is slidably arranged in the central through hole of the inner housing. The sample splitter is arranged above the inner housing, and a plurality of sample storage cylinders are arranged on the sample splitter. A cover closing mechanism and a feeding mechanism are arranged inside the inner housing. The cover closing mechanism and the feeding mechanism cooperate to cover the plurality of sample storage cylinders after sampling. This device realizes the function of sampling sludge in multiple times in a targeted area. When sampling, the surrounding water quality will not be too turbid. At the same time, it has the functions of sampling without water, short-distance movement, sample splitting and storage, and buoyancy adjustment.

Description

Technical Field

[0001] The present invention relates to the technical field of lake ecological sampling, and specifically refers to a sampling device for monitoring the ecological environment of lakes. Background Art

[0002] The lake ecological environment refers to the natural environment of the lake and its surrounding areas, including various factors such as the lake water body, aquatic organisms, wetlands, shore vegetation, hydrogeology, etc. The lake ecological environment is of great significance for maintaining ecological balance and protecting biodiversity. Therefore, it is necessary to sample the sediment at the bottom of the lake to better understand the sediment characteristics, pollutant content, and historical changes of the lake at the bottom.

[0003] Most of the existing sampling devices directly sample the lake bottom sediment through a tubular object. This method of sampling is simple and is the most efficient in terms of sampling a wide range of multiple points. In order to improve the accuracy of sampling, it is necessary to sample the sediment multiple times in a targeted area and then detect the average value. However, multiple repeated samplings will stir the lake bottom sediment to float, making the water here turbid, directly resulting in the interlacing of the sediment in the targeted area, causing the phenomenon that the detected components of the two samples are the same when sampling adjacent locations, which will affect the sample analysis results. Sampling multiple times through a tubular object has low efficiency and cannot separate and store the samples after sampling. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above difficulties and provide a sampling device for monitoring the ecological environment of lakes.

[0005] To solve the above technical problem, the technical solution provided by the present invention is: a sampling device for monitoring the ecological environment of lakes, including an external functional mechanism and a sampling mechanism. The external functional mechanism includes an outer housing body, on which there are a plurality of support feet and a plurality of driving paddles. The sampling mechanism is arranged at the bottom of the outer housing body, and the sampling mechanism samples the lake bottom sediment;

[0006] The sampling mechanism includes an inner housing body, a sampler, and a sample splitter. The inner housing body is fixedly arranged inside the bottom of the outer housing body. The sampler is slidably arranged in the central through hole of the inner housing body, and the sample splitter is arranged above the inner housing body;

[0007] The sampler includes a lifting frame, a main sampling mechanism, a conveying mechanism, and a lifting cylinder. The lifting cylinder drives the lifting frame to move up and down in the inner housing body. The main sampling mechanism and the conveying mechanism are respectively arranged in the sampling pipe and the conveying pipe of the lifting frame. The sampling pipe and the conveying pipe are connected through an inclined conveying channel, and the top of the conveying pipe is open;

[0008] The sample splitter includes a turntable and a motor three. The motor three drives the turntable to rotate on the top of the inner housing body. The top of the lifting cylinder passes through the central through hole of the turntable and is connected to the inside of the outer housing body. There are a plurality of sample storage cylinders on the turntable.

[0009] As an improvement: The main sampling mechanism includes a first motor which is arranged inside the sampling pipe. A first screw rod is provided at the output end of the first motor. A sampling drill bit is provided at the bottom of the first screw rod. The sampling drill bit is rotatably arranged at the bottom of the sampling pipe, and the outer diameter of the top of the sampling drill bit is not less than the outer diameter of the sampling pipe. The conveying mechanism includes a second motor. A second screw rod is provided at the output end of the second motor. The second screw rod is arranged inside the conveying pipe. The sample collection is realized by the main sampling mechanism, and the sample transportation is realized by the conveying mechanism.

[0010] As an improvement: A retaining wall is provided outside the sampler at the bottom of the inner shell. An air pump is arranged inside the inner shell. The air inlet end of the air pump is connected to an external air source, and the air outlet end is communicated with the retaining wall through a pipeline. During sampling, the air is conveyed by the air pump to discharge the water inside the retaining wall. A plurality of drainage grooves are provided at the bottom of the retaining wall. Through the design of the retaining wall of the inner shell, the water-free sampling effect is realized.

[0011] As an improvement: An adjustment cavity, a control room and a connection room are successively arranged from top to bottom at the top of the outer shell. The sampling mechanism is placed in the connection room. Electronic devices are stored in the control room. A water pump is arranged in the control room. The water pump fills the external water into the adjustment cavity. A control valve is arranged on the drain pipe of the adjustment cavity. An air inlet pipe is connected at the through hole at the top of the adjustment cavity. The buoyancy of the device is controlled through the adjustment cavity.

[0012] As an improvement: A gear is provided at the output end of the third motor. A toothed ring meshing with the gear is provided outside the turntable. The sample storage cylinder is buckled on the placement hole on the turntable. An insertion platform is arranged inside the placement hole. A slot cooperating with the insertion platform is provided outside the sample storage cylinder. The top of the conveying pipe extends into the inside of the sample storage cylinder. The rotation effect of the sample storage cylinder is realized through the sample splitter.

[0013] As an improvement: A cover closing mechanism is arranged inside the inner shell. The cover closing mechanism rotatably installs the cover in threaded cooperation with the sample storage cylinder onto the sample storage cylinder. The cover closing mechanism consists of a fixed frame, a lifting cylinder, a transmission slider, a fourth motor and a limiting magnetic ring. The fixed frame includes a top platform and a bottom plate. The lifting cylinder is arranged on the bottom plate. The output end of the lifting cylinder is connected to the transmission slider. The transmission slider is slidably arranged inside the fixed frame. The fourth motor is fixed on the transmission slider. A limiting ring is provided at the output end. A flower platform cooperating with the flower groove on the top surface of the cover is provided on the limiting ring. The limiting ring is slidably arranged in the groove at the top of the top platform. The limiting magnetic ring is fixed on the top platform. The cover closing effect of the sample storage cylinder is realized through the cover closing mechanism, which is convenient for taking.

[0014] As an improvement: A feeding mechanism cooperating with the cover closing mechanism is arranged inside the inner shell. The feeding mechanism includes a feeding cylinder, a push plate and a material plate. The feeding cylinder is hinged and arranged inside the inner shell. A connecting block is provided at the output end of the feeding cylinder. The connecting block is hinged to the bottom of the push plate. A guiding groove slidably cooperating with the push plate is arranged inside the inner shell. A placement cavity for storing the cover closing mechanism and the feeding mechanism is arranged inside the inner shell. A pushing spring is arranged in the placement cavity where the feeding mechanism is located. The top end of the pushing spring is connected to the material plate. The cover is placed on the material plate. The cover closing mechanism is replenished with materials through the feeding mechanism.

[0015] As an improvement: The supporting feet include a slideway fixed to the outside of the outer casing and a propulsion cylinder. The output end of the propulsion cylinder is provided with a slider that slidably cooperates with the slideway, and the bottom of the slider is provided with a supporting foot cylinder to realize the short-distance movement function of the device.

[0016] The beneficial effects of the present invention compared with the prior art are as follows: The device realizes the function of taking multiple samples of silt in a targeted area. When sampling, the surrounding water quality will not be too turbid. At the same time, it has the functions of sampling without water, short-distance movement, sample separation and preservation, and buoyancy adjustment, which greatly facilitates taking multiple samples in a targeted area. Specifically:

[0017] The sampling mechanism is designed completely to realize the collection, transportation and classification preservation of samples. The sample is collected by the sampler, and the sample is preserved in different sample storage cylinders through the sample splitter. Through the cooperation of the lid closing mechanism and the feeding mechanism, the lid closing action is carried out on multiple sample storage cylinders in sequence;

[0018] The enclosure design of the inner casing discharges the water in the enclosure through the air pump to form a waterless area at the sampling point. When sampling, the agitation of the sampler on the silt will not cause the surrounding water quality to be turbid, so that the sample components of adjacent sampling points will not be mixed and interfered, improving the accuracy of the detection results.

[0019] The design of the external functional mechanism realizes the short-distance movement effect of the device through the cooperation of the supporting feet and the driving paddles, and the movement amplitude is small, reducing the turbidity of the water quality. By controlling the filling of water inside the adjustment cavity, the overall buoyancy of the device is controlled, which is convenient for short-distance walking and floating after sampling. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of a lake ecological environment monitoring and sampling device of the present invention.

[0021] Figure 2 is a cross-section of a lake ecological environment monitoring and sampling device of the present invention Figure 1 .

[0022] Figure 3 is a cross-section of a lake ecological environment monitoring and sampling device of the present invention Figure 2 .

[0023] Figure 4 is a cross-sectional view of the external functional mechanism of a lake ecological environment monitoring and sampling device of the present invention.

[0024] Figure 5 is an exploded view of the sampling mechanism of a lake ecological environment monitoring and sampling device of the present invention.

[0025] Figure 6 is a cross-sectional view of the sampling mechanism of a lake ecological environment monitoring and sampling device of the present invention.

[0026] Figure 7 It is a cross-section of the inner shell of a lake ecological environment monitoring and sampling device of the present invention. Figure 1 .

[0027] Figure 8 It is a cross-section of the inner shell of a lake ecological environment monitoring and sampling device of the present invention. Figure 2 .

[0028] Figure 9 It is a structural schematic diagram of a sampler of a lake ecological environment monitoring and sampling device of the present invention.

[0029] Figure 10 It is an exploded view of a sampler of a lake ecological environment monitoring and sampling device of the present invention.

[0030] Figure 11 It is an exploded view of a sample splitter of a lake ecological environment monitoring and sampling device of the present invention.

[0031] Figure 12 It is a structural schematic diagram of a lid closing mechanism of a lake ecological environment monitoring and sampling device of the present invention.

[0032] Figure 13 It is an exploded view of a lid closing mechanism of a lake ecological environment monitoring and sampling device of the present invention.

[0033] Figure 14 It is an exploded view of a feeding mechanism of a lake ecological environment monitoring and sampling device of the present invention.

[0034] As shown in the figure: 1. External functional mechanism; 2. Sampling mechanism; 3. Inner housing; 4. Sampler; 5. Sample divider; 6. Lid closing mechanism; 7. Feeding mechanism; 8. Sample storage cylinder; 11. Outer housing; 111. Adjustment cavity; 112. Control room; 113. Connection room; 114. Water pump; 115. Check valve; 116. Control valve; 117. Outer door; 118. Sampling door; 12. Support feet; 121. Slideway; 122. Propulsion cylinder; 123. Slide block; 124. Support foot cylinder; 13. Driving paddle; 14. Intake pipe; 31. Positioning chute; 32. Air pump; 33. Enclosure; 34. Placement cavity; 35. Guide groove; 36. Inner door; 37. Drainage groove; 41. Lifting frame; 411. Sampling pipe; 412. Inclined feeding channel; 413. Delivery pipe; 414. Positioning slide; 42. Main sampling mechanism; 421. Motor 1; 422. Screw rod 1; 423. Sampling drill bit; 43. Conveying mechanism; 431. Motor 2; 432. Screw rod 2; 44. Lifting cylinder; 51. Turntable; 511. Placement hole; 512. Insertion platform; 513. Tooth ring; 52. Motor 3; 521. Gear; 61. Fixed frame; 611. Top platform; 612. Slide rod; 613. Limiting plate; 614. Bottom plate; 62. Jacking cylinder; 63. Transmission slide block; 64. Motor 4; 641. Limiting ring; 642. Flower platform; 65. Limiting magnetic ring; 71. Feeding cylinder; 711. Connecting block; 72. Pusher plate; 73. Feeding spring; 74. Material plate; 81. Insertion slot; 82. Sealing cover; 83. Flower groove. Detailed implementation mode

[0035] The following further elaborates on the present invention in conjunction with the accompanying drawings.

[0036] Combined with the attached Figure 1 and the attached Figure 2 As shown, a sampling device for lake ecological environment monitoring includes an external functional mechanism 1 and a sampling mechanism 2. The external functional mechanism 1 includes an outer housing 11, on which there are a plurality of support feet 12 and a plurality of driving paddles 13. The sampling mechanism 2 is arranged at the bottom of the outer housing 11, and the sampling mechanism 2 samples the lake bottom silt. The sampling mechanism 2 includes an inner housing 3, a sampler 4 and a sample divider 5. The inner housing 3 is fixedly arranged inside the bottom of the outer housing 11. The sampler 4 slides in the central through hole of the inner housing 3. The sample divider 5 is arranged above the inner housing 3, and there are a plurality of sample storage cylinders 8 on the sample divider 5. Inside the inner housing 3, there are a lid closing mechanism 6 and a feeding mechanism 7. The lid closing mechanism 6 and the feeding mechanism 7 cooperate to seal the plurality of sample storage cylinders 8 after sampling.

[0037] Combined with the attached Figure 2 、the attached Figure 3 、the attached Figure 4As shown, the top of the outer shell 11 is provided with a regulating chamber 111, a control chamber 112 and a connecting chamber 113 in order from top to bottom, the sampling mechanism 2 is placed in the connecting chamber 113, the electronic device is stored in the control chamber 112, and a water pump 114 is provided in the control chamber 112. The water pump 114 fills the regulating chamber 111 with external water. The water inlet end of the water pump 114 is connected to the outside of the outer shell 11 through a pipeline, and the water outlet end of the water pump 114 is connected to the inside of the regulating chamber 111 through a pipeline. A one-way valve 115 is provided on the channel, a control valve 116 is provided on the drain pipe connected to the outside of the outer shell 11 in the regulating chamber 111, an air inlet pipe 14 is connected to the through hole on the top of the regulating chamber 111, the support leg 12 includes a slideway 121 and a thrust cylinder 122 fixed to the outside of the outer shell 11, a slider 123 slidably matched with the slideway 121 is provided at the output end of the thrust cylinder 122, a support leg cylinder 124 is provided at the bottom of the slider 123, and the output end of the support leg cylinder 124 is connected to the support plate.

[0038] Working principle of the outer shell 11: The sampling device is moved by the driving paddle 13 on the outside of the outer shell 11. The driving paddle 13 can be designed as a structure that can rotate and adjust the direction. The power source and control system are arranged in the control room 112. After the sampling device falls to the predetermined sampling area on the bottom of the lake, the water pump 114 is used to fill the regulating chamber 111 with water to reduce buoyancy and increase gravity. Then, the lake bottom sludge is sampled through the sampling mechanism 2. After one sampling is completed, if it is necessary to sample the sludge multiple times in the targeted area and obtain the sample test result by the average value, the legs 12 and the driving paddle 13 are used to adjust the sampling device. The paddle 13 cooperates to move a short distance. During the movement, the support cylinders 124 of the symmetrical support legs 12 on both sides retract the support plates, and the support legs 12 on the other two sides push the slider 123 to move through the thrust cylinder 122, so that the sampling device moves a short distance. This process requires the driving paddle 13 to cooperate to maintain balance, so as to achieve the effect of quickly changing the adjacent sampling points. After the sampling is completed, the air inlet pipe 14 inputs air into the regulating chamber 111, and at the same time opens the control valve 116 to discharge the water inside the regulating chamber 111 to reduce the weight of the sampling device and increase the buoyancy, so as to facilitate the driving paddle 13 to drive the sampling device to float.

[0039] Combined with Figure 5 , Attachment Figure 7 and attached Figure 8 As shown, a baffle 33 is provided at the bottom of the inner shell 3 outside the sampler 4, and an air pump 32 is provided inside the inner shell 3. The air inlet end of the air pump 32 is connected to an external air source, and the air outlet end is connected to the baffle 33 through a pipeline. When sampling, air is transported by the air pump 32 to discharge the water inside the baffle 33, and a plurality of drainage grooves 37 are provided at the bottom of the baffle 33.

[0040] Working principle of the inner shell 3: To ensure that repeated grasping multiple times will not make the sampling area turbid and avoid interference with adjacent sampling points when sampling a sampling point, the air pump 32 discharges the air from the external air source into the enclosure 33, causing the water in the enclosure 33 to drain through the drainage groove 37, creating a water-free area at the sampling point. The agitation during sampling will not cause turbidity.

[0041] Combined with the attached Figure 5 and the attached Figure 7 and the attached Figure 9 and the attached Figure 10 As shown, the sampler 4 includes a lifting frame 41, a main sampling mechanism 42, a conveying mechanism 43, and a lifting cylinder 44. The lifting cylinder 44 drives the lifting frame 41 to move up and down in the inner shell 3. The main sampling mechanism 42 and the conveying mechanism 43 are respectively arranged in the sampling pipe 411 and the conveying pipe 413 of the lifting frame 41. The sampling pipe 411 and the conveying pipe 413 are connected through an inclined conveying channel 412. Positioning slideways 414 are arranged on both sides of the inclined conveying channel 412, and positioning chute 31 that slidably cooperates with the positioning slideways 414 is arranged on the inner shell 3. The top of the conveying pipe 413 is open. The main sampling mechanism 42 includes a first motor 421 arranged inside the sampling pipe 411. A first screw rod 422 is arranged at the output end of the first motor 421. A sampling drill bit 423 is arranged at the bottom of the first screw rod 422. The sampling drill bit 423 is rotatably arranged at the bottom of the sampling pipe 411, and the outer diameter of the top of the sampling drill bit 423 is not less than the outer diameter of the sampling pipe 411. The conveying mechanism 43 includes a second motor 431. A second screw rod 432 is arranged at the output end of the second motor 431. The second screw rod 432 is arranged inside the conveying pipe 413. The top of the conveying pipe 413 extends into the inside of the sample storage cylinder 8.

[0042] Working principle of the sampler 4: After creating a water-free environment in the enclosure 33, the first motor 421 drives the first screw rod 422 and the sampling drill bit 423 to rotate. At the same time, the lifting cylinder 44 pushes the lifting frame 41 to move downward, causing the sampling drill bit 423 to drill into the lake bottom sludge for sampling. The sludge is conveyed upward along the sampling pipe 411 through the first screw rod 422 to the inclined conveying channel 412. The second motor 431 drives the second screw rod 432 to continue conveying the sludge along the conveying pipe 413 to the sample storage cylinder 8. During the sampling process, the conveying pipe 413 moves downward, gradually moving away from the sample storage cylinder 8 and moving below the turntable 51. After the sample storage cylinder 8 is filled with sludge, the sampling is completed. The turntable 51 rotates a certain angle, and the bottom of the sample storage cylinder 8 is blocked by the top plate of the inner shell 3 to ensure that the sample does not fall. Subsequently, the lifting cylinder 44 drives the lifting frame 41 to reset. At the same time, the first motor 421 and the second motor 431 reverse, discharging the excess sludge in the lifting frame 41 to prepare for the next sampling. The discharged sludge will fall into the sampling hole, and the water-free environment inside the enclosure 33 ensures that the sludge discharge process will not affect the surrounding environment.

[0043] Combined with the attached Figure 1 and the attachedFigure 2 and appendices Figure 5 and appendices Figure 11 As shown in Figure 11 , the sample splitter 5 includes a turntable 51 and a motor three 52. The motor three 52 drives the turntable 51 to rotate on the top of the inner housing 3. The top of the lifting cylinder 44 passes through the central through hole of the turntable 51 and is connected to the inside of the outer housing 11. A plurality of sample storage cylinders 8 are provided on the turntable 51. A gear 521 is provided at the output end of the motor three 52. A toothed ring 513 meshing with the gear 521 is provided outside the turntable 51. The sample storage cylinder 8 is buckled on the placement hole 511 on the turntable 51. An insertion platform 512 is provided inside the placement hole 511. A slot 81 cooperating with the insertion platform 512 is provided outside the sample storage cylinder 8. A sampling door 118 is hinged on the outer housing 11.

[0044] Working principle of the sample splitter 5: The motor three 52 drives the gear 521 to rotate. Through the meshing transmission between the gear 521 and the toothed ring 513, the turntable 51 is driven to rotate, so that the positions of the plurality of sample storage cylinders 8 on the turntable 51 are changed. The sample storage cylinder 8 at the position of the positioning chute 31 stores samples. After the sample storage cylinder 8 stores samples, it rotates with the turntable 51 and then moves to the top through hole of the inner housing 3 at the position of the capping mechanism 6. The capping mechanism 6 installs the sealing cap 82 threadedly engaged with the sample storage cylinder 8 onto the sample storage cylinder 8. After multiple samplings are completed, the sampling door 118 is opened, and the sample storage cylinder 8 is pulled out of the placement hole 511 and then taken away. When performing layered sampling at the same position, the sampler 4 is always in the sampling state, and the plurality of sample storage cylinders 8 rotate and change positions, so that samples at different depths are stored in different sample storage cylinders 8.

[0045] Combined with appendices Figure 6 and appendices Figure 12 and appendices Figure 13 As shown in Figure 13 , the capping mechanism 6 rotatably installs the sealing cap 82 threadedly engaged with the sample storage cylinder 8 onto the sample storage cylinder 8. The capping mechanism 6 includes a fixed frame 61, a lifting cylinder 62, a transmission slider 63, a motor four 64 and a limiting magnetic ring 65. The fixed frame 61 includes a top platform 611 and a bottom plate 614. The lifting cylinder 62 is provided on the bottom plate 614. The bottom plate 614 is fixed inside the inner housing 3. The output end of the lifting cylinder 62 is connected to the transmission slider 63. The transmission slider 63 slides inside the fixed frame 61. The transmission slider 63 slidably cooperates with the sliding rod 612 at the bottom of the top platform 611. A limiting plate 613 for restricting the movement range of the transmission slider 63 is provided at the bottom of the sliding rod 612. The motor four 64 is fixed on the transmission slider 63. A limiting ring 641 is provided at the output end. A flower platform 642 cooperating with the flower groove 83 on the top surface of the sealing cap 82 is provided on the limiting ring 641. The limiting ring 641 slides inside the top groove of the top platform 611. The limiting magnetic ring 65 is fixed on the top platform 611.

[0046] Working principle of the lid closing mechanism 6: In the initial state, the sealing cover 82 is in the through hole of the inner shell 3 above the lid closing mechanism 6. After the sample storage cylinder 8 moves to the position of the sealing cover 82 along with the turntable 51, the lifting cylinder 62 pushes the transmission slider 63 upward, driving the transmission slider 63 and the fourth motor 64 upward, so that the flower table 642 is inserted into the flower groove 83 on the top surface of the sealing cover 82. Subsequently, the fourth motor 64 drives the flower table 642 to rotate, driving the sealing cover 82 to be screwed into the sample storage cylinder 8 to seal the sample. The limiting ring 641 moves in the cavity formed by the top groove of the top table 611 and the limiting magnetic ring 65 to control the feeding amount of the sealing cover 82. Subsequently, when the lid closing mechanism 6 resets and the limiting magnetic ring 65 is lower than the bottom of the sealing cover 82 at the initial position, the feeding mechanism 7 sends the sealing cover 82 to the limiting magnetic ring 65, and the lid closing mechanism 6 resets to the initial state.

[0047] Combined with the attached Figure 1 、attached Figure 5 、attached Figure 8 and attached Figure 14 As shown, the feeding mechanism 7 includes a feeding cylinder 71, a push plate 72 and a material plate 74. The feeding cylinder 71 is hinged inside the inner shell 3. A connecting block 711 is provided at the output end of the feeding cylinder 71. The connecting block 711 is hinged to the bottom of the push plate 72. A guiding groove 35 that slidably cooperates with the push plate 72 is provided inside the inner shell 3. A placement cavity 34 for placing the lid closing mechanism 6 and the feeding mechanism 7 is provided inside the inner shell 3. A pushing spring 73 is provided in the placement cavity 34 where the feeding mechanism 7 is located. The top end of the pushing spring 73 is connected to the material plate 74. The sealing cover 82 is placed on the material plate 74. An inner door 36 is hinged to the inner shell 3 at the position of the feeding mechanism 7, and an outer door 117 is hinged to the outer shell 11 at the position of the inner door 36. The inner door 36 and the outer door 117 and the channel therebetween are sealed.

[0048] Working principle of the feeding mechanism 7: The feeding cylinder 71 pushes the connecting block 711, and then pushes the push plate 72 to slide in the guiding groove 35, so that the sealing cover 82 moves to the limiting magnetic ring 65. After the push plate 72 resets, the pushing spring 73 pushes the material plate 74 to move the sealing cover 82 upward to prepare for the next feeding. When replenishing materials, the outer door 117 and the inner door 36 are opened, and the sealing cover 82 is sent into the placement cavity 34 where the feeding mechanism 7 is located.

[0049] In the specific implementation of the present invention, the sampling device moves to the sampling position through the driving paddle 13, then discharges the water inside the enclosure 33, and fills the adjustment cavity 111 with water. The lake bottom silt is sampled through the sampler 4, and the sample is sealed in the sample storage cylinder 8. Subsequently, the sample storage cylinder 8 is moved to the lid closing mechanism 6 through the sample splitter 5 for lid closing treatment, and the feeding mechanism 7 replenishes materials for the lid closing mechanism 6. After sampling at one location is completed, through the cooperation of the support feet 12 and the driving paddle 13, the short-distance movement of the sampling device is realized, and targeted regional multiple samplings of silt are carried out. After sampling is completed, the water inside the adjustment cavity 111 is discharged to increase buoyancy, so that the sampling device floats.

[0050] The present invention and its embodiments have been described above. Such description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the spirit of the present invention, design similar structural modes and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A lake ecological environment monitoring sampling device, comprising an external functional mechanism (1) and a sampling mechanism (2). The external functional mechanism (1) includes a housing (11), and a plurality of support feet (12) and a plurality of driving paddles (13) are provided on the housing (11). The sampling mechanism (2) is arranged at the bottom of the housing (11), and the sampling mechanism (2) samples the lake bottom sludge. It is characterized in that: The sampling mechanism (2) includes an inner housing (3), a sampler (4) and a sample splitter (5). The inner housing (3) is fixedly arranged inside the bottom of the housing (11). The sampler (4) is slidably arranged in the central through hole of the inner housing (3), and the sample splitter (5) is arranged above the inner housing (3); A retaining wall (33) is arranged outside the sampler (4) at the bottom of the inner housing (3). An air pump (32) is arranged inside the inner housing (3). A plurality of drainage grooves (37) are arranged at the bottom of the retaining wall (33). The retaining wall (33) drains water through the air pump (32) to form a water-free sampling area; The sampler (4) includes a lifting frame (41), a main sampling mechanism (42), a conveying mechanism (43) and a lifting cylinder (44). The lifting cylinder (44) drives the lifting frame (41) to move up and down in the inner housing (3). The main sampling mechanism (42) and the conveying mechanism (43) are respectively arranged in the sampling pipe (411) and the conveying pipe (413) of the lifting frame (41). The sampling pipe (411) and the conveying pipe (413) are connected through an inclined conveying channel (412). The top of the conveying pipe (413) is open; The sample splitter (5) includes a turntable (51) and a motor three (52). The motor three (52) drives the turntable (51) to rotate on the top of the inner housing (3). The top of the lifting cylinder (44) passes through the central through hole of the turntable (51) and is connected to the inside of the housing (11). A plurality of sample storage cylinders (8) are arranged on the turntable (51). The sample storage cylinders (8) are buckled on the placement holes (511) on the turntable (51); A lid closing mechanism (6) is arranged inside the inner housing (3). The lid closing mechanism (6) rotatably installs a sealing cap (82) threadedly matched with the sample storage cylinder (8) onto the sample storage cylinder (8). A feeding mechanism (7) matched with the lid closing mechanism (6) is arranged inside the inner housing (3). The feeding mechanism (7) includes a feeding cylinder (71), a push plate (72) and a material plate (74). The feeding cylinder (71) is hingedly arranged inside the inner housing (3). A connecting block (711) is arranged at the output end of the feeding cylinder (71). The connecting block (711) is hinged to the bottom of the push plate (72). A guiding groove (35) slidably matched with the push plate (72) is arranged inside the inner housing (3). A placement cavity (34) for storing the lid closing mechanism (6) and the feeding mechanism (7) is arranged inside the inner housing (3). A pushing spring (73) is arranged in the placement cavity (34) where the feeding mechanism (7) is located. The top of the pushing spring (73) is connected to the material plate (74). The sealing cap (82) is placed on the material plate (74).

2. The lake ecological environment monitoring and sampling device according to claim 1, characterized in that: The main sampling mechanism (42) includes a first motor (421) disposed inside the sampling tube (411). A first screw rod (422) is provided at the output end of the first motor (421). A sampling drill bit (423) is provided at the bottom of the first screw rod (422). The sampling drill bit (423) is rotatably disposed at the bottom of the sampling tube (411), and the outer diameter of the top of the sampling drill bit (423) is not less than the outer diameter of the sampling tube (411). The conveying mechanism (43) includes a second motor (431). A second screw rod (432) is provided at the output end of the second motor (431). The second screw rod (432) is disposed inside the conveying tube (413).

3. The lake ecological environment monitoring and sampling device according to claim 1, characterized in that: The air inlet end of the air pump (32) is connected to an external air source, and the air outlet end is connected to the enclosure (33) through a pipeline. During sampling, the air pump (32) is used to convey air to discharge the water inside the enclosure (33).

4. The lake ecological environment monitoring and sampling device according to claim 1, characterized in that: At the top of the outer housing (11), an adjustment chamber (111), a control room (112), and a connection chamber (113) are successively arranged from top to bottom. The sampling mechanism (2) is placed in the connection chamber (113). Electronic devices are stored in the control room (112). A water pump (114) is provided in the control room (112). The water pump (114) fills the external water into the adjustment chamber (111). A control valve (116) is provided on the drain pipe of the adjustment chamber (111). An air inlet pipe (14) is connected to the through hole at the top of the adjustment chamber (111).

5. The lake ecological environment monitoring and sampling device according to claim 1, wherein: A gear (521) is provided at the output end of the third motor (52). A toothed ring (513) meshing with the gear (521) is provided on the outer side of the turntable (51). A plug platform (512) is provided inside the placement hole (511). A slot (81) cooperating with the plug platform (512) is provided on the outer side of the sample storage cylinder (8). During sample storage, the top of the conveying tube (413) extends into the inner side of the sample storage cylinder (8).

6. The lake ecological environment monitoring and sampling device according to claim 1, characterized in that: The cover closing mechanism (6) includes a fixed frame (61), a lifting cylinder (62), a transmission slider (63), a fourth motor (64), and a limiting magnetic ring (65). The fixed frame (61) includes a top platform (611) and a bottom plate (614). The lifting cylinder (62) is disposed on the bottom plate (614). The output end of the lifting cylinder (62) is connected to the transmission slider (63). The transmission slider (63) is slidably disposed inside the fixed frame (61). The fourth motor (64) is fixed on the transmission slider (63). A limiting ring (641) is provided at the output end of the fourth motor (64). A flower platform (642) cooperating with the flower groove (83) on the top surface of the cover (82) is provided on the limiting ring (641). The limiting ring (641) is slidably disposed in the groove at the top of the top platform (611). The limiting magnetic ring (65) is fixed on the top platform (611).

7. The lake ecological environment monitoring and sampling device according to claim 1, characterized in that: The support feet (12) include a slideway (121) fixed to the outside of the outer housing (11) and a propulsion cylinder (122). The output end of the propulsion cylinder (122) is provided with a slider (123) slidably engaged with the slideway (121). A support foot cylinder (124) is provided at the bottom of the slider (123).

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