Lake ecological environment monitoring and sampling device

Abstract

The invention relates to the technical field of lake ecological sampling, and discloses a lake ecological environment monitoring and sampling device which comprises an external function mechanism and a sampling mechanism, the external function mechanism comprises an outer shell, a plurality of supporting feet and a plurality of driving paddles are arranged on the outer shell, the sampling mechanism is arranged at the bottom of the outer shell, and the sampling mechanism is used for sampling lake bottom sludge. The sampling mechanism comprises an inner shell, a sampler and a sample splitter, the inner shell is fixedly arranged on the inner side of the bottom of the outer shell, the sampler is arranged in a central through hole of the inner shell in a sliding mode, the sample splitter is arranged above the inner shell, a plurality of sample storage barrels are arranged on the sample splitter, and a cover closing mechanism and a feeding mechanism are arranged in the inner shell; according to the device, the function of multiple times of sludge sampling in a targeted area is achieved, the surrounding water quality is not too turbid during sampling, and meanwhile the device has the functions of water-free sampling, short-distance movement, sample separation and storage and buoyancy adjustment.

Description

Technical Field

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

[0002] The lake ecological environment refers to the natural environment of the lake and its surrounding areas, including lake water bodies, aquatic organisms, wetlands, shore vegetation, hydrogeology and other factors. The lake ecological environment is of great significance for maintaining ecological balance and protecting biodiversity. Therefore, it is necessary to sample the silt sediments at the bottom of the lake in order to better understand the sediment characteristics at the bottom of the lake, the content of pollutants, and the historical changes of the lake.

[0003] Most existing sampling devices directly sample the lake bottom sludge through a tube. This method is simple to sample and is the most efficient in wide-range multi-point sampling. In order to improve the accuracy of sampling, it is necessary to sample the sludge multiple times in a targeted area and then detect the average value. Repeated sampling will stir up the floating sediment on the lake bottom, making the water here turbid, which directly leads to the interlacing of sediments in the targeted area, resulting in the phenomenon that the detection components of two samples taken at adjacent locations are consistent, which will affect the sample analysis results. Multiple sampling through a tube is inefficient and cannot be stored separately 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 lake ecological environment monitoring sampling device.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is as follows: a lake ecological environment monitoring sampling device, comprising an external functional mechanism and a sampling mechanism, the external functional mechanism comprising an outer shell, the outer shell is provided with a plurality of legs and a plurality of driving paddles, the sampling mechanism is arranged at the bottom of the outer shell, and the sampling mechanism samples the lake bottom silt; The sampling mechanism includes an inner shell, a sampler and a sample divider. The inner shell is fixedly arranged on the inner side of the bottom of the outer shell. The sampler is slidably arranged in the central through hole of the inner shell. The sample divider is arranged above the inner shell. 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 shell. The main sampling mechanism and the conveying mechanism are respectively arranged in the sampling tube and the conveying tube of the lifting frame. The sampling tube and the conveying tube are connected through an oblique conveying channel, and the top of the conveying tube is open. The sample divider includes a turntable and motor three. Motor three drives the turntable to rotate on the top of the inner shell. The top of the lifting cylinder passes through the central through hole of the turntable and is connected to the inside of the outer shell. A plurality of sample storage tubes are arranged on the turntable.

[0006] As an improvement: the main sampling mechanism includes motor 1, which is arranged inside the sampling tube, and a spiral rod 1 is provided at the output end of motor 1, and a sampling drill bit is provided at the bottom of the spiral rod 1. The sampling drill bit is rotatably arranged at the bottom of the sampling tube, and the outer diameter of the top of the sampling drill bit is not less than the outer diameter of the sampling tube. The conveying mechanism includes motor 2, and a spiral rod 2 is provided at the output end of motor 2, and the spiral rod 2 is arranged on the inside of the conveying tube. Sample collection is achieved through the main sampling mechanism, and sample conveying is achieved through the conveying mechanism.

[0007] As an improvement: an enclosure is provided on the outside of the sampler at the bottom of the inner shell, and an air pump is provided inside the inner shell. The air inlet of the air pump is connected to an external air source, and the air outlet is connected to the enclosure through a pipeline. When sampling, air is transported by the air pump to discharge the water inside the enclosure. A plurality of drainage grooves are provided at the bottom of the enclosure. The enclosure design of the inner shell achieves a waterless sampling effect.

[0008] As an improvement: the top of the outer shell is provided with a regulating chamber, a control chamber and a connecting chamber from top to bottom, the sampling mechanism is placed in the connecting chamber, electronic devices are stored in the control chamber, a water pump is provided in the control chamber, the water pump fills external water into the regulating chamber, a control valve is provided on the drain pipe of the regulating chamber, an air inlet pipe is connected to the through hole at the top of the regulating chamber, and the buoyancy of the device is controlled by the regulating chamber.

[0009] As an improvement: gears are provided at the third output end of the motor, a gear ring meshing with the gears is provided on the outside of the turntable, the sample storage tube is inverted on the placement hole on the turntable, an insertion platform is provided on the inside of the placement hole, a slot matching the insertion platform is provided on the outside of the sample storage tube, the top of the conveying tube extends into the inside of the sample storage tube, and the rotation effect of the sample storage tube is realized through the sample divider.

[0010] As an improvement: a closing mechanism is provided inside the inner shell body, which rotates and installs the sealing cap that cooperates with the sample storage tube thread onto the sample storage tube. The closing mechanism includes a fixed frame, a lifting cylinder, a transmission slider, a motor four 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, and the transmission slider is slidably arranged in the fixed frame. Motor four is fixed on the transmission slider. A limiting ring is provided at the output end. The limiting ring is provided with a flower platform that cooperates with the flower groove on the top surface of the sealing cap. The limiting ring is slidably arranged in the groove on the top of the top platform. The limiting magnetic ring is fixed on the top platform. The closing effect of the sample storage tube is achieved by the closing mechanism, which is convenient for taking.

[0011] As an improvement: a feeding mechanism cooperating with the closing mechanism is provided inside the inner shell body, the feeding mechanism includes a feeding cylinder, a push plate and a material plate, the feeding cylinder is hingedly arranged in the inner shell body, 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 guide groove slidably cooperated with the push plate is provided in the inner shell body, a placement cavity for storing the closing mechanism and the feeding mechanism is provided in the inner shell body, a pushing spring is provided in the placement cavity where the feeding mechanism is located, the top end of the pushing spring is connected to the material plate, the sealing cover is placed on the material plate, and the closing mechanism is replenished with material through the feeding mechanism.

[0012] As an improvement: the support leg includes a slideway and a propulsion cylinder fixed to the outside of the outer shell, the output end of the propulsion cylinder is provided with a slider that slides with the slideway, and the bottom of the slider is provided with a support leg cylinder to realize the short-distance movement of the device.

[0013] Compared with the prior art, the invention has the following beneficial effects: the device realizes the function of multiple sludge sampling in targeted areas. When sampling, the surrounding water quality will not be too turbid. At the same time, it has the functions of waterless sampling, short-distance movement, sample storage and buoyancy adjustment, which greatly facilitates multiple sampling in targeted areas. Specifically: The sampling mechanism is designed to be complete, and can realize the collection, transportation and classified storage of samples. The sampler is used to collect samples, and the samples are stored in different sample storage tubes through the sample divider. The cover closing mechanism cooperates with the feeding mechanism to sequentially close the covers of multiple sample storage tubes. The enclosure design of the inner shell discharges the water in the enclosure through an air pump, forming a water-free area at the sampling point. During sampling, the stirring of the silt by the sampler will not cause turbidity in the surrounding water, so that the sample components of adjacent sampling points will not be disturbed by reverberation, thereby improving the accuracy of the test results.

[0014] The design of the external functional mechanism achieves the short-distance movement of the device through the cooperation of the supporting legs and the driving paddles, and the movement amplitude is small, which reduces the turbidity of the water quality. By controlling the filling of water inside the regulating chamber, the overall buoyancy of the device is controlled, which is convenient for short-distance walking and floating after sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic diagram of the structure of a lake ecological environment monitoring sampling device.

[0016] Figure 2 A cross-sectional view of a lake ecological environment monitoring sampling device of the present invention Figure 1 .

[0017] Figure 3 A cross-sectional view of a lake ecological environment monitoring sampling device of the present invention Figure 2 .

[0018] Figure 4 It is a cross-sectional view of an external functional mechanism of a lake ecological environment monitoring sampling device of the present invention.

[0019] Figure 5 It is an exploded view of a sampling mechanism of a lake ecological environment monitoring sampling device of the present invention.

[0020] Figure 6 The present invention is a cross-sectional view of a sampling mechanism of a lake ecological environment monitoring sampling device.

[0021] Figure 7This is a cross-sectional view of the inner shell of a lake ecological environment monitoring sampling device of the present invention. Figure 1 .

[0022] Figure 8 This is a cross-sectional view of the inner shell of a lake ecological environment monitoring sampling device of the present invention. Figure 2 .

[0023] Fig. 9 The present invention is a schematic structural diagram of a sampler of a lake ecological environment monitoring sampling device.

[0024] Fig.10 It is an exploded view of a sampler of a lake ecological environment monitoring sampling device of the present invention.

[0025] Fig.11 The invention discloses an exploded diagram of a sample divider of a sampling device for monitoring the ecological environment of a lake.

[0026] Fig.12 The invention discloses a structural schematic diagram of a cover closing mechanism of a lake ecological environment monitoring and sampling device.

[0027] Fig.13 It is an exploded view of a cover closing mechanism of a lake ecological environment monitoring sampling device of the present invention.

[0028] Fig.14 It is an exploded view of a feeding mechanism of a lake ecological environment monitoring sampling device of the present invention.

[0029] As shown in the figure: 1. External functional mechanism; 2. Sampling mechanism; 3. Inner shell; 4. Sampler; 5. Sample divider; 6. Closing mechanism; 7. Feeding mechanism; 8. Sample storage tube; 11. Outer shell; 111. Adjustment chamber; 112. Control chamber; 113. Connection chamber; 114. Water pump; 115. One-way valve; 116. Control valve; 117. Outer door; 118. Sampling door; 12. Support foot; 121. Slide; 122. Propulsion cylinder; 123. Sliding block; 124. Support foot cylinder; 13. Driving paddle; 14. Air inlet pipe; 31. Positioning slide; 32. Air pump; 33. Enclosure; 34. Placement chamber; 35. Guide groove; 36. Inner door; 37. Drainage groove; 41. Lifting frame; 411. Sampling tube; 412. Oblique delivery channel; 413. Conveying Tube; 414, positioning slide; 42, main sampling mechanism; 421, motor one; 422, screw rod one; 423, sampling drill; 43, conveying mechanism; 431, motor two; 432, screw rod two; 44, lifting cylinder; 51, turntable; 511, placement hole; 512, inserting table; 513, gear ring; 52, motor three; 521, gear; 61, fixed frame; 611, top table; 612, slide rod; 613, limit plate; 614, bottom plate; 62, lifting cylinder; 63, transmission slider; 64, motor four; 641, limit ring; 642, flower stand; 65, limit magnetic ring; 71, feeding cylinder; 711, connecting block; 72, push plate; 73, push spring; 74, material plate; 81, slot; 82, cover; 83, flower trough. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0031] Combined with Figure 1 and attached Figure 2 As shown, a lake ecological environment monitoring sampling device includes an external functional mechanism 1 and a sampling mechanism 2. The external functional mechanism 1 includes an outer shell 11, and the outer shell 11 is provided with a plurality of legs 12 and a plurality of driving paddles 13. The sampling mechanism 2 is arranged at the bottom of the outer shell 11. The sampling mechanism 2 samples the lake bottom sludge. The sampling mechanism 2 includes an inner shell 3, a sampler 4 and a sample divider 5. The inner shell 3 is fixedly arranged on the inner side of the bottom of the outer shell 11, and the sampler 4 is slidably arranged in the central through hole of the inner shell 3. The sampler 5 is arranged above the inner shell 3. The sampler 5 is provided with a plurality of sample storage tubes 8. The inner shell 3 is provided with a cover closing mechanism 6 and a feeding mechanism 7. The cover closing mechanism 6 and the feeding mechanism 7 cooperate to seal the plurality of sample storage tubes 8 after sampling.

[0032] Combined with Figure 2 , Attachment Figure 3 , Attachment 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.

[0033] 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.

[0034] 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.

[0035] Working principle of the inner shell 3: In order to ensure that repeated grabbing will not make the sampling area turbid and avoid interference with the adjacent sampling points when sampling at the sampling point, the air from the external air source is discharged into the enclosure 33 through the air pump 32, and the water in the enclosure 33 is discharged through the drainage trough 37, so that the sampling point forms a water-free area, and the stirring during sampling will not cause turbidity.

[0036] Combined with Figure 5 , Attachment Figure 7 , Attachment Fig. 9 and attached Fig.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 tube 411 and the conveying tube 413 of the lifting frame 41. The sampling tube 411 and the conveying tube 413 are connected through an oblique conveying channel 412. Positioning slides 414 are arranged on both sides of the oblique conveying channel 412. The inner shell 3 is provided with a positioning slide 31 that slides with the positioning slide 414. The top of the conveying tube 413 is open. The main sampling mechanism 42 includes a motor 421, which is arranged inside the sampling tube 411. A spiral rod 422 is provided at the output end of the motor 421. A sampling drill bit 423 is provided at the bottom of the spiral rod 422. The sampling drill bit 423 is rotatably arranged 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 motor 431, which is provided at the output end of the motor 431. The spiral rod 432 is provided on the inner side of the conveying tube 413, and the top of the conveying tube 413 extends into the inner side of the sample storage cylinder 8.

[0037] Working principle of sampler 4: After a water-free environment is formed in enclosure 33, motor 1 421 drives screw rod 1 422 and sampling drill 423 to rotate, and at the same time, lifting cylinder 44 pushes lifting frame 41 to move downward, so that sampling drill 423 drills into the lake bottom mud to sample it. The mud is transported upward to oblique delivery channel 412 along sampling tube 411 through screw rod 1 422, and motor 2 431 drives screw rod 2 432 to continue to transport the mud along delivery tube 413 to sample storage cylinder 8. During the sampling process, delivery tube 413 moves downward. Move, gradually leave the sample storage tube 8, and move to the bottom of the turntable 51. After the sludge fills the sample storage tube 8, the sampling is completed. The turntable 51 rotates a certain angle so that the bottom of the sample storage tube 8 is blocked by the top plate of the inner shell body 3 to ensure that the sample will not fall. Then the lifting cylinder 44 drives the lifting frame 41 to reset. At the same time, motor 1 421 and motor 2 431 reverse to discharge the excess sludge in the lifting frame 41 to prepare for the next sampling. The discharged sludge will fall into the sampling hole. The water-free environment inside the enclosure 33 ensures that the sludge discharge process will not affect the surrounding environment.

[0038] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 5 and attached Fig.11 As shown, the sample divider 5 includes a turntable 51 and a motor 52. The motor 52 drives the turntable 51 to rotate at the top of the inner shell 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 shell 11. A plurality of sample barrels 8 are arranged on the turntable 51. A gear 521 is arranged at the output end of the motor 52. A gear ring 513 meshing with the gear 521 is arranged on the outer side of the turntable 51. The sample barrel 8 is inverted on the placement hole 511 on the turntable 51. A plug-in platform 512 is arranged on the inner side of the placement hole 511. A slot 81 cooperating with the plug-in platform 512 is arranged on the outer side of the sample barrel 8. A sampling door 118 is hingedly provided on the outer shell 11.

[0039] The working principle of the sample divider 5 is as follows: the motor 52 drives the gear 521 to rotate, and the gear 521 is meshed with the gear ring 513 to drive the turntable 51 to rotate, so that the multiple sample storage tubes 8 on the turntable 51 change their positions, and the sample storage tube 8 at the position of the positioning slide groove 31 is used to store samples. After the sample is stored, the sample storage tube 8 rotates with the turntable 51 and moves to the top through hole of the inner shell body 3 at the position of the cover closing mechanism 6. The cover 82 is installed on the sample storage tube 8 through the cover closing mechanism 6. After multiple samplings are completed, the sampling door 118 is opened, and the sample storage tube 8 is pulled out of the placement hole 511 and taken away. When performing stratified sampling at the same position, the sampler 4 is always in the sampling state, and the multiple sample storage tubes 8 rotate and change positions, so that samples of different depths are stored in different sample storage tubes 8.

[0040] Combined with Figure 6 , Attachment Fig.12 and attached Fig.13 As shown, the cover closing mechanism 6 rotates and installs the cover 82 that is threadedly matched with the sample storage tube 8 onto the sample storage tube 8. The cover closing mechanism 6 includes a fixing frame 61, a lifting cylinder 62, a transmission slider 63, a motor 4 64 and a limit magnetic ring 65. The fixing frame 61 includes a top platform 611 and a bottom plate 614. The lifting cylinder 62 is arranged on the bottom plate 614, and the bottom plate 614 is fixed in the inner shell 3. The output end of the lifting cylinder 62 is connected to the transmission slider 63, and the transmission slider 63 is slidably arranged on In the fixed frame 61, the transmission slider 63 is slidably matched with the slide rod 612 at the bottom of the top platform 611. A limit plate 613 is provided at the bottom of the slide rod 612 to limit the movable range of the transmission slider 63. Motor four 64 is fixed on the transmission slider 63. A limit ring 641 is provided at the output end. The limit ring 641 is provided with a flower platform 642 that cooperates with the flower groove 83 on the top surface of the cover 82. The limit ring 641 is slidably set in the top groove of the top platform 611, and the limit magnetic ring 65 is fixed on the top platform 611.

[0041] Working principle of the closing mechanism 6: in the initial state, the sealing cover 82 is in the through hole of the inner shell body 3 above the closing mechanism 6. After the sample storage tube 8 moves to the sealing cover 82 position with the turntable 51, the lifting cylinder 62 pushes the transmission slider 63 to move upward, driving the transmission slider 63 and the motor four 64 to move upward, so that the flower stand 642 is inserted into the flower groove 83 on the top surface of the sealing cover 82. Then the motor four 64 drives the flower stand 642 to rotate, driving the sealing cover 82 to be screwed into the sample storage tube 8 to seal the sample. The limiting ring 641 moves in the cavity formed by the groove at the top of the top platform 611 and the limiting magnetic ring 65 to control the feeding amount of the sealing cover 82. Then the closing mechanism 6 is reset and the limiting magnetic ring 65 is lower than the bottom of the sealing cover 82 when the initial position. The sealing cover 82 is sent to the limiting magnetic ring 65 through the feeding mechanism 7, and the closing mechanism 6 is reset to the initial state.

[0042] Combined with Figure 1 , Attachment Figure 5 , Attachment Figure 8 and attached Fig.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 in 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 guide groove 35 that slides with the push plate 72 is provided in the inner shell 3. A placement cavity 34 for storing the cover-closing mechanism 6 and the feeding mechanism 7 is provided in 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. The inner shell 3 is hingedly provided with an inner door 36 at the position of the feeding mechanism 7. The outer shell 11 is hingedly provided with an outer door 117 at the inner door 36. The inner door 36 and the outer door 117 as well as the passage therebetween are sealed.

[0043] Working principle of feeding mechanism 7: feeding cylinder 71 pushes connecting block 711, and then pushes push plate 72 to slide in guide groove 35, so that cover 82 moves to limit magnetic ring 65. After push plate 72 is reset, push spring 73 pushes material plate 74 to move cover 82 upward, preparing for next feeding. When replenishing, open outer door 117 and inner door 36, and send cover 82 to the placement cavity 34 where feeding mechanism 7 is located.

[0044] During the specific implementation of the present invention, the sampling device moves to the sampling position through the driving paddle 13, then the water inside the enclosure 33 is discharged, and the regulating chamber 111 is filled with water, and the lake bottom sludge is sampled through the sampler 4, and the sample is sealed in the sample storage tube 8, and then the sample storage tube 8 is moved to the cover closing mechanism 6 for cover closing through the sample divider 5, and the feeding mechanism 7 replenishes the cover closing mechanism 6. After the sampling is completed at one location, the sampling device is moved short-distance through the support leg 12 and the driving paddle 13, and the sludge is sampled multiple times in a targeted area. After the sampling is completed, the water inside the regulating chamber 111 is discharged to increase the buoyancy and make the sampling device float.

[0045] The present invention and its embodiments are described above, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and do not deviate from the purpose of the invention, they can creatively design a structure and embodiment similar to the technical solution, which should 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), wherein the external functional mechanism (1) comprises an outer shell (11), the outer shell (11) is provided with a plurality of legs (12) and a plurality of driving paddles (13), the sampling mechanism (2) is provided at the bottom of the outer shell (11), and the sampling mechanism (2) samples lake bottom silt, characterized in that: The sampling mechanism (2) comprises an inner shell (3), a sampler (4) and a sample divider (5); the inner shell (3) is fixedly arranged on the inner side of the bottom of the outer shell (11); the sampler (4) is slidably arranged in the central through hole of the inner shell (3); and the sample divider (5) is arranged above the inner shell (3); The sampler (4) comprises 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 a sampling tube (411) and a conveying tube (413) of the lifting frame (41); the sampling tube (411) and the conveying tube (413) are connected through an oblique conveying channel (412); and the top of the conveying tube (413) is open; The sample divider (5) comprises a turntable (51) and a third motor (52). The third motor (52) drives the turntable (51) to rotate at the top of the inner shell (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 shell (11). A plurality of sample storage tubes (8) are provided on the turntable (51).

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

3. A lake ecological environment monitoring sampling device according to claim 1, characterized in that: The bottom of the inner shell (3) is provided with a baffle (33) outside the sampler (4), and an air pump (32) is provided inside the inner shell (3). The air inlet of the air pump (32) is connected to an external air source, and the air outlet is connected to the baffle (33) through a pipeline. When sampling, air is transported by the air pump (32) to discharge water inside the baffle (33), and a plurality of drainage grooves (37) are provided at the bottom of the baffle (33).

4. A lake ecological environment monitoring sampling device according to claim 1, characterized in that: 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 control chamber (112) stores electronic devices; a water pump (114) is provided in the control chamber (112); the water pump (114) fills the regulating chamber (111) with external water; a control valve (116) is provided on a drainage pipe of the regulating chamber (111); and an air inlet pipe (14) is connected to a through hole at the top of the regulating chamber (111).

5. A lake ecological environment monitoring sampling device according to claim 1, characterized in that: A gear (521) is provided at the output end of the motor three (52), a gear ring (513) meshing with the gear (521) is provided on the outer side of the turntable (51), the sample storage tube (8) is buckled on the placement hole (511) on the turntable (51), an insertion platform (512) is provided on the inner side of the placement hole (511), a slot (81) matching with the insertion platform (512) is provided on the outer side of the sample storage tube (8), and the top of the delivery tube (413) extends into the inner side of the sample storage tube (8).

6. A lake ecological environment monitoring sampling device according to claim 5, characterized in that: The inner shell (3) is provided with a cover closing mechanism (6) inside. The cover closing mechanism (6) is used to rotatably install a sealing cover (82) that is threadably matched with the sample storage tube (8) onto the sample storage tube (8). The cover closing mechanism (6) comprises a fixing frame (61), a lifting cylinder (62), a transmission slide block (63), a motor four (64) and a limiting magnetic ring (65). The fixing frame (61) comprises a top platform (611) and a bottom plate (614). The lifting cylinder (62) is arranged 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 arranged in the fixed frame (61), the motor (64) is fixed on the transmission slider (63), the output end is provided with a limit ring (641), the limit ring (641) is provided with a flower stand (642) matched with the flower groove (83) on the top surface of the cover (82), the limit ring (641) is slidably arranged in the top groove of the top stand (611), and the limit magnetic ring (65) is fixed on the top stand (611).

7. A lake ecological environment monitoring sampling device according to claim 6, characterized in that: A feeding mechanism (7) cooperating with the cover closing mechanism (6) is provided inside the inner shell (3), the feeding mechanism (7) comprising a feeding cylinder (71), a push plate (72) and a material plate (74), the feeding cylinder (71) being hingedly arranged inside the inner shell (3), a connecting block (711) being provided at the output end of the feeding cylinder (71), the connecting block (711) being hingedly connected to the bottom of the push plate (72), a guide groove (35) slidably cooperating with the push plate (72) being provided inside the inner shell (3), a placement cavity (34) for storing the cover closing mechanism (6) and the feeding mechanism (7), a pushing spring (73) being provided inside the placement cavity (34) where the feeding mechanism (7) is located, the top end of the pushing spring (73) being connected to the material plate (74), and a sealing cover (82) being placed on the material plate (74).

8. The lake ecological environment monitoring sampling device according to claim 1 is characterized in that: The support leg (12) comprises a slideway (121) and a propulsion 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 propulsion cylinder (122); and a support leg cylinder (124) is provided at the bottom of the slider (123).

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