A sampling device for groundwater detection

Abstract

The present invention relates to the technical field of groundwater sampling, and specifically to a sampling device for groundwater detection, comprising a support base, a rotating shaft connected to the support base passes through the support base, a driver for driving the rotating shaft to rotate is installed on the support base, a shielding sleeve is provided on the outer sleeve of the rotating shaft, and a damping transmission structure adapted to the shielding sleeve is installed on the rotating shaft. A plurality of sampling boxes uniformly distributed in a circle are provided above the support base, the sampling box is a cavity structure with an opening at one end, and the opening directions of the plurality of sampling boxes are all toward the shielding sleeve, a mounting hole is provided on the shielding sleeve, and a filter screen adapted to the sampling box is fixedly connected in the mounting hole; workers do not need to place the sampling device in the groundwater multiple times, but only need to place the sampling device in the groundwater once to obtain groundwater at different depths, thereby improving the convenience of sampling.

Description

Technical Field

[0001] The present invention relates to the technical field of groundwater sampling, and in particular to a sampling device for groundwater detection. Background Art

[0002] When conducting a groundwater quality survey, the groundwater quality will be tested to obtain the substance content in the groundwater. When obtaining groundwater, it is necessary to sample the groundwater. When sampling, the sampling device is placed in the groundwater to allow the groundwater to enter the sampling device. When the collection is completed, the sampling device is removed from the groundwater to obtain a groundwater sample.

[0003] However, it is worth considering that, because the depth of groundwater is different, the substance content is also different, so it is necessary to collect groundwater at different depths in order to improve the accuracy of detecting the substance content of groundwater at different depths. In order to obtain groundwater at different depths, workers need to place the sampling device in the groundwater multiple times and take samples multiple times, which is more troublesome.

[0004] Therefore, in order to solve the above problems, a related facility that is more in line with usage needs needs to emerge. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to propose a sampling device for groundwater detection to solve the above-mentioned problem that in order to obtain groundwater at different depths, workers need to place the sampling device in the groundwater multiple times and perform multiple samplings.

[0006] Based on the above purpose, the present invention provides a sampling device for groundwater detection, including a support base, a rotating shaft connected to the support base passes through the support base, a driver for driving the rotating shaft to rotate is installed on the support base, a shielding sleeve is provided on the outer sleeve of the rotating shaft, and a damping transmission structure adapted to the shielding sleeve is installed on the rotating shaft. A plurality of sampling boxes uniformly distributed in a circumference are provided above the support base, the sampling boxes are a cavity structure with an opening at one end, and the opening directions of the plurality of sampling boxes are all toward the shielding sleeve, a mounting hole is provided on the shielding sleeve, and a filter screen adapted to the sampling boxes is fixedly connected in the mounting hole;

[0007] The rotating shaft is fixedly installed with a mounting plate, the mounting plate is fixedly installed with a cleaning brush adapted to the filter screen, the bottom of the sampling box is fixedly connected to a drain pipe, the external sliding sleeve of the drain pipe is provided with a movable seat, the support seat is installed with a translational pressing structure adapted to the movable seat, the movable seat is installed with an opening and closing unit adapted to the drain pipe, and the movable seat is installed with a magnetic fixing mechanism adapted to the sampling box.

[0008] Optionally, the damping transmission structure includes a first rotating frame rotatably sleeved on the outside of the rotating shaft, and the top of the shielding sleeve is fixedly connected to the bottom of the first rotating frame, the bottom of the first rotating frame is fixedly connected to a first damping disk, the external fixed sleeve of the rotating shaft is provided with a second damping disk, and the top of the second damping disk is in contact with the bottom of the first damping disk, and the support seat is equipped with a stopper adapted to the first rotating frame.

[0009] Optionally, the stop member includes a lifting ring arranged under the support seat, a plurality of hydraulic telescopic rods are fixedly connected to the top of the support seat, and the telescopic ends of the hydraulic telescopic rods are fixedly connected to the top of the lifting ring, and at least one stop frame is fixedly connected to the top of the lifting ring, the stop frame passes through the support seat, and the side wall of the stop frame is in contact with the first rotating frame.

[0010] Optionally, the opening and closing unit includes a first sealing disk arranged below the drain pipe, the top of the first sealing disk contacts the bottom of the drain pipe, the movable seat is equipped with a stretching piece adapted to the first sealing disk, the bottom of the first sealing disk is fixedly connected to a fixed block, a first groove is provided at the top of the rotating shaft, a first movable column is provided in the first groove, the bottom end of the first movable column and the bottom inner wall of the first groove are connected by a first compression spring, the external sliding sleeve of the rotating shaft is provided with a lifting frame located below the lifting ring, a guide hole is provided on the inner wall of the first groove, a first guide block is slidingly provided in the guide hole, and the first guide block is fixedly connected to the lifting frame and the first movable column respectively, and the fixed block is provided with a first sliding groove adapted to the lifting frame.

[0011] Optionally, the stretching member includes a plurality of fixed columns arranged above the first sealing disk, the bottom of the fixed column is fixedly connected to the top of the movable seat, a second groove is provided at the bottom of the fixed column, a second movable column is slidably provided in the second groove, the top of the second movable column and the top inner wall of the second groove are connected by a stretching spring, the bottom end of the second movable column passes through the movable seat, and the bottom end of the second movable column is fixedly connected to the top of the first sealing disk.

[0012] Optionally, the magnetic fixing mechanism includes at least one iron block fixedly mounted on the bottom of the sampling box, the outer sliding sleeve of the iron block is provided with a limit sleeve, the bottom of the limit sleeve is fixedly connected to the top of the movable seat, a magnet block is slidingly provided in the limit sleeve, the top of the magnet block is in contact with the bottom of the iron block, a guide groove is provided on the inner wall of the limit sleeve, a second guide block is slidingly provided in the guide groove, and the second guide block is fixedly connected to the corresponding magnet block, a movable plate is provided under the fixed block, the magnet block and the movable plate are connected by a connecting column, and the connecting column passes through the movable seat.

[0013] Optionally, the driver includes a protective shell fixedly mounted on the top of the support seat, the protective shell is a cavity structure with an open bottom end, the outer fixed sleeve of the rotating shaft is provided with a first gear located in the protective shell, the top of the support seat is fixedly connected to a servo motor located in the protective shell, and the output end of the servo motor is fixedly connected to a second gear meshing with the first gear.

[0014] The cam is secured to the bottom of the platform and is adapted to engage the first support column, the second support column being secured to the bottom of the platform and adapted to engage the first support column when the platform is in motion.

[0015] Optionally, a second sealing disk is provided in the sampling box, and an air inlet hole located above the second sealing disk is opened on the top inner wall of the sampling box. The top of the second sealing disk is in contact with the top inner wall of the sampling box. A plurality of piston columns are fixedly connected to the top of the second sealing disk, and the top of the piston column is fixedly connected to a fixed disk located above the sampling box. The fixed disk and the sampling box are connected by a second compression spring. A second support column is fixedly connected to the top of the second sealing disk, and the second support column passes through the air inlet hole. A pressing frame adapted to the second support column is provided above the rotating shaft, and the pressing frame is fixedly connected to the top of the first movable column.

[0016] Optionally, a mounting bracket is provided above the shielding cover, and the mounting bracket is fixedly connected to the support seat, and a plurality of hanging rings are fixedly connected to the top of the mounting bracket.

[0017] The beneficial effects of the present invention are as follows: the driver drives the rotating shaft to rotate, and the rotating shaft drives the shielding sleeve to rotate synchronously through the damping transmission structure, so that the filter screen on the shielding sleeve moves to one side of the corresponding sampling box, and the filter screen and the opening on the sampling box overlap each other, the rotating shaft stops and drives the shielding sleeve to rotate synchronously through the damping transmission structure, and the debris in the water is filtered through the filter screen, and the groundwater flows into the sampling box through the filter screen, and the rotating shaft drives the cleaning brush to rotate continuously through the mounting plate, and the cleaning brush periodically cleans the filter screen. When the sampling box is full of groundwater, the rotating shaft drives the shielding sleeve to rotate synchronously again through the damping transmission structure, so that the filter screen moves to between two adjacent sampling boxes, and the filter screen is filtered. The filter is no longer located on one side of the corresponding sampling box. When the lifting device drives the support seat to move down to the next preset depth, the rotating shaft drives the shielding sleeve to rotate synchronously again through the damping transmission structure, so that the filter on the shielding sleeve moves to the side of the next sampling box, and the groundwater can be sampled again. The above sampling steps are repeated until all the sampling boxes are sampled. The lifting device drives the support seat to move up to the initial height, and the opening and closing unit opens the drain pipe to take out the groundwater in the sampling box. Workers do not need to place the sampling device in the groundwater multiple times. They only need to place the sampling device in the groundwater once to obtain groundwater at different depths, which improves the convenience of sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-section structure of a sampling box according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic structural diagram of the top of the support base according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic structural diagram of a movable seat according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the separated limiting sleeve and the magnet block according to an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the fixed column and the second movable column separated according to an embodiment of the present invention;

[0025] Figure 7 This is a structural diagram of the bottom of the support base according to an embodiment of the present invention;

[0026] Figure 8 This is a schematic structural diagram of the entire rotating shaft according to an embodiment of the present invention;

[0027] Figure 9 This is a schematic structural diagram of a cross-section of a rotating shaft according to an embodiment of the present invention.

[0028] The following are marked in the figure:

[0029] 1. Support base; 2. Sampling box; 3. Drain pipe; 4. Rotating shaft; 5. First rotating frame; 6. Shielding sleeve; 7. Mounting hole; 8. Filter screen; 9. Mounting plate; 10. Cleaning brush; 11. Movable seat; 12. First damping disc; 13. Second damping disc; 14. Lifting ring; 15. Hydraulic telescopic rod; 16. Stop frame; 17. First sealing disc; 18. Fixed block; 19. Lifting frame; 20. First slide groove; 21. First groove; 22. First movable column; 23. First compression spring; 24. Guide hole; 25. First guide block; 26. Fixed column; 27. Second groove; 28. Second movable column; 29. ​​Tension spring ;30. Iron block;31. Limit sleeve;32. Magnet block;33. Guide groove;34. Second guide block;35. Movable plate;36. Connecting column;37. Protective shell;38. First gear;39. Servo motor;40. Second gear;41. Slide plate;42. Second slide groove;43. First support column;44. Second rotating frame;45. Support block;46. Third damping disk;47. Fourth damping disk;48. Sealing ring;49. Second sealing disk;50. Air inlet;51. Piston column;52. Fixed disk;53. Second compression spring;54. Second support column;55. Pressing frame;56. Mounting frame;57. Lifting ring. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0031] This embodiment proposes a sampling device for groundwater detection, such as Figure 1 、 Figure 3 、 Figure 7 and Figure 8As shown, it includes a support base 1, a rotating shaft 4 is rotatably connected to the support base 1, the support base 1 is equipped with a driver for driving the rotating shaft 4 to rotate, the outer sleeve of the rotating shaft 4 is provided with a shielding sleeve 6, the rotating shaft 4 is equipped with a damping transmission structure adapted to the shielding sleeve 6, and a plurality of sampling boxes 2 are evenly distributed on the circumference are provided above the support base 1. The sampling box 2 is a cavity structure with an open end, and the opening directions of the plurality of sampling boxes 2 are all toward the shielding sleeve 6. The shielding sleeve 6 is provided with a mounting hole 7, and a filter screen 8 adapted to the sampling box 2 is fixedly connected in the mounting hole 7;

[0032] The rotating shaft 4 is fixedly installed with a mounting plate 9, and the mounting plate 9 is fixedly installed with a cleaning brush 10 adapted to the filter screen 8. The bottom of the sampling box 2 is fixedly connected to the drain pipe 3, and the external sliding sleeve of the drain pipe 3 is provided with a movable seat 11. The support seat 1 is installed with a translation pressing structure adapted to the movable seat 11, and the movable seat 11 is installed with an opening and closing unit adapted to the drain pipe 3, and the movable seat 11 is installed with a magnetic fixing mechanism adapted to the sampling box 2; the rotating shaft 4 is driven to rotate by the driver, and the rotating shaft 4 drives the shielding sleeve 6 to rotate synchronously through the damping transmission structure, so that the filter screen 8 on the shielding sleeve 6 moves to one side of the corresponding sampling box 2, and the filter screen 8 and the opening on the sampling box 2 overlap each other, and the rotating shaft 4 stops driving the shielding sleeve 6 to rotate synchronously through the damping transmission structure, and the debris in the water is filtered through the filter screen 8, and the groundwater flows into the sampling box 2 through the filter screen 8, and the rotating shaft 4 drives the cleaning brush 10 to rotate continuously through the mounting plate 9, and the cleaning brush 10 Periodically clean the filter screen 8. When the sampling box 2 is filled with groundwater, the rotating shaft 4 drives the shielding sleeve 6 to rotate synchronously again through the damping transmission structure, so that the filter screen 8 moves to between the two adjacent sampling boxes 2. The filter screen 8 is no longer located on one side of the corresponding sampling box 2. When the lifting device drives the support seat 1 to move down to the next preset depth, the rotating shaft 4 drives the shielding sleeve 6 to rotate synchronously again through the damping transmission structure, so that the filter screen 8 on the shielding sleeve 6 moves to the side of the next sampling box 2, and the groundwater can be sampled again. Repeat the above sampling steps until all the sampling boxes 2 are sampled. The lifting device drives the support seat 1 to move up to the initial height, and the opening and closing unit opens the drain pipe 3 to take out the groundwater in the sampling box 2. The worker does not need to place the sampling device in the groundwater multiple times. The sampling device only needs to be placed in the groundwater once to obtain groundwater at different depths, which improves the convenience of sampling.

[0033] In some optional specific embodiments, such as Figure 3 、 Figure 7 and Figure 8As shown, the damping transmission structure includes a first rotating frame 5 rotatably sleeved on the outside of the rotating shaft 4, and the top of the shielding sleeve 6 is fixedly connected to the bottom of the first rotating frame 5, the bottom of the first rotating frame 5 is fixedly connected with a first damping disc 12, the external fixed sleeve of the rotating shaft 4 is provided with a second damping disc 13, and the top of the second damping disc 13 is in contact with the bottom of the first damping disc 12, the support seat 1 is equipped with a stopper adapted to the first rotating frame 5, the stopper includes a lifting ring 14 provided below the support seat 1, a plurality of hydraulic telescopic rods 15 are fixedly connected to the top of the support seat 1, and the telescopic ends of the hydraulic telescopic rods 15 are fixedly connected to the top of the lifting ring 14, and at least one stopper 16 is fixedly connected to the top of the lifting ring 14, the stopper 16 passes through the support seat 1, and the side wall of the stopper 16 is in contact with the first rotating frame 5;

[0034] When the driver drives the rotating shaft 4 to rotate, the rotating shaft 4 drives the second damping disc 13 to rotate, and the second damping disc 13 drives the first damping disc 12, the first rotating frame 5 and the shielding sleeve 6 to rotate through friction. When the shielding sleeve 6 drives the filter screen 8 to move to one side of one of the sampling boxes 2, the first rotating frame 5 contacts the stop frame 16, and the first rotating frame 5 and the shielding sleeve 6 stop rotating. As the rotating shaft 4 continues to rotate, the second damping disc 13 cannot drive the first damping disc 12 to rotate continuously through friction, and the rotating shaft 4 drives the cleaning brush 10 to rotate continuously through the mounting plate 9, and the cleaning brush 10 periodically cleans the filter screen 8. When the rotating shaft 4 needs to drive the first rotating frame 5 and the shielding sleeve 6 to rotate synchronously, the hydraulic telescopic rod 15 drives the lifting ring 14 and the stop frame 16 to move upward so that the stop frame 16 no longer contacts the first rotating frame 5. As the rotating shaft 4 continues to rotate, the second damping disc 13 can pass again When the first rotating frame 5 contacts the stop frame 16 again, the shielding sleeve 6 drives the filter screen 8 to move between the two adjacent sampling boxes 2. When the next sampling is required, the hydraulic telescopic rod 15 drives the lifting ring 14 and the stop frame 16 to move up again, and the stop frame 16 no longer limits the first rotating frame 5. As the rotating shaft 4 continues to rotate, the rotating shaft 4 drives the first rotating frame 5 and the shielding sleeve 6 to rotate synchronously again. The hydraulic telescopic rod 15 drives the lifting ring 14 and the stop frame 16 to move down again. When the rotating shaft 4 drives the filter screen 8 to move to the side of the next sampling box 2 through the first rotating frame 5 and the shielding sleeve 6, the first rotating frame 5 contacts the stop frame 16 again, so that the shielding sleeve 6 and the filter screen 8 can be moved to the preset position again and then stop.

[0035] In some optional specific embodiments, such as Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 9 As shown, the opening and closing unit includes a first sealing disk 17 arranged below the drain pipe 3, the top of the first sealing disk 17 is in contact with the bottom of the drain pipe 3, the movable seat 11 is installed with a stretching piece adapted to the first sealing disk 17, the bottom of the first sealing disk 17 is fixedly connected with a fixed block 18, a first groove 21 is provided on the top of the rotating shaft 4, a first movable column 22 is provided in the first groove 21, the bottom end of the first movable column 22 and the bottom inner wall of the first groove 21 are connected by a first compression spring 23, the outer sliding sleeve of the rotating shaft 4 is provided with a lifting frame 19 located below the lifting ring 14, a guide hole 24 is provided on the inner wall of the first groove 21, and a first guide is provided in the guide hole 24. Block 25, and the first guide block 25 is fixedly connected to the lifting frame 19 and the first movable column 22 respectively, the fixed block 18 is provided with a first slide groove 20 adapted to the lifting frame 19, and the tensile member includes a plurality of fixed columns 26 arranged above the first sealing disk 17, the bottom of the fixed column 26 is fixedly connected to the top of the movable seat 11, and a second groove 27 is provided at the bottom of the fixed column 26. A second movable column 28 is slidably provided in the second groove 27. The top of the second movable column 28 and the top inner wall of the second groove 27 are connected by a tension spring 29. The bottom end of the second movable column 28 passes through the movable seat 11, and the bottom end of the second movable column 28 is fixedly connected to the top of the first sealing disk 17. The suction and fixing mechanism includes at least one iron block 30 fixedly mounted on the bottom of the sampling box 2, the outer sliding sleeve of the iron block 30 is provided with a limiting sleeve 31, the bottom of the limiting sleeve 31 is fixedly connected to the top of the movable seat 11, a magnet block 32 is slidably provided in the limiting sleeve 31, the top of the magnet block 32 is in contact with the bottom of the iron block 30, a guide groove 33 is provided on the inner wall of the limiting sleeve 31, a second guide block 34 is slidably provided in the guide groove 33, and the second guide block 34 is fixedly connected to the corresponding magnet block 32, a movable plate 35 is provided below the fixed block 18, the magnet block 32 and the movable plate 35 are connected by a connecting column 36, and the connecting column 36 passes through the movable seat 11, and the sampling box 2 is provided with a first Second sealing disk 49, the top inner wall of the sampling box 2 is provided with an air inlet 50 located above the second sealing disk 49, the top of the second sealing disk 49 is in contact with the top inner wall of the sampling box 2, the top of the second sealing disk 49 is fixedly connected to a plurality of piston columns 51, the top of the piston column 51 is fixedly connected to a fixed disk 52 located above the sampling box 2, the fixed disk 52 and the sampling box 2 are connected by a second compression spring 53, the top of the second sealing disk 49 is fixedly connected to a second support column 54, and the second support column 54 passes through the air inlet 50, and a pressing frame 55 adapted to the second support column 54 is provided above the rotating shaft 4, and the pressing frame 55 is fixedly connected to the top of the first movable column 22;

[0036] When the sampling is completed, the support seat 1 is removed from the groundwater, and the shielding sleeve 6 drives the filter screen 8 to move between the two adjacent sampling boxes 2. When the filter screen 8 no longer overlaps with the opening of the sampling box 2, the stop frame 16 is in contact with the first rotating frame 5. When the rotating shaft 4 rotates, the rotating shaft 4 will not drive the first rotating frame 5 and the shielding sleeve 6 to rotate synchronously. At this time, the second gear 40 is driven to rotate by the servo motor 39, and the second gear 40 drives the rotating shaft 4 to rotate through the first gear 38. The rotating shaft 4 drives the lifting frame 19 and the first movable column 22 to rotate synchronously through the first guide block 25. The first compression spring 23 is in a compressed state. At this time, the first compression spring 23 applies pressure to the first movable column 22 and the first guide block 25 to make the top of the first guide block 25 and The top inner wall of the guide hole 24 is in contact with each other, and the lifting frame 19 is in the highest position. At this time, the tension spring 29 is in a tensioned state. The tension spring 29 applies tension to the second movable column 28 and the first sealing disk 17, so that the top of the first sealing disk 17 and the bottom of the drain pipe 3 are tightly attached. The second compression spring 53 is in a compressed state. The second compression spring 53 applies pressure to the fixed disk 52, the piston column 51 and the second sealing disk 49, so that the top of the second sealing disk 49 and the top inner wall of the sampling box 2 are tightly attached. The second sealing disk 49 seals the air inlet 50. When the end of the lifting frame 19 moves into one of the first slide grooves 20, the hydraulic telescopic rod 15 drives the lifting ring 14 to move downward, and the lifting ring 14 presses the lifting frame 19 to make the lifting frame 19 pass through the fixed block 1 8 drives the first sealing disk 17 and the second movable column 28 to move downward relative to the drain pipe 3 and the movable seat 11, so as to open the drain pipe 3. When the lifting frame 19 moves downward, the lifting frame 19 drives the first movable column 22 and the pressing frame 55 to move downward through the first guide block 25. The pressing frame 55 presses the corresponding second support column 54 and the second sealing disk 49 so that the second sealing disk 49 no longer contacts the top inner wall of the sampling box 2, so that the air inlet 50 is in an open state. When the drain pipe 3 is draining, the sampling box 2 can take in air through the air inlet 50, so as to quickly complete the discharge of groundwater. When the drainage is completed, the lifting ring 14 and the lifting frame 19 are driven to continue to move downward through the hydraulic telescopic rod 15, so that the lifting frame 19 pushes the movable plate 35 through the fixed block 18. When the first movable column 22 and the pressing frame 55 are rotated by the rotating shaft 4, so that the pressing frame 55 is no longer located above the corresponding sampling box 2, the staff can drive the sampling box 2 to move up to make the iron block 30 disengage from the limiting sleeve 31, and the removal of the sampling box 2 can be completed. When the lifting ring 14 moves downward, the lifting ring 14 drives the stop frame 16 to move downward synchronously with respect to the first rotating frame 5, and the stop frame 16 always keeps in contact with the first rotating frame 5.When the hydraulic telescopic rod 15 drives the lifting ring 14 upward, the first compression spring 23 drives the first movable column 22, the first guide block 25, and the lifting frame 19 to move upward synchronously, and the tension spring 29 drives the second movable column 28 and the first sealing disk 17 to move upward. When the lifting frame 19 returns to its initial height, the first sealing disk 17 and the fixed block 18 are synchronously reset to their initial positions. The end of the lifting frame 19 is driven by the rotating shaft 4 to rotate into the next first chute 20. The hydraulic telescopic rod 15 drives the lifting ring 14 downward, which can reopen the corresponding drain pipe 3 or release the fixed relationship between the sampling box 2 and the movable seat 11.

[0037] In some optional specific embodiments, such as Figure 2 、 Figure 3 、 Figure 4 、 Figure 7 and Figure 8 As shown, the driver includes a protective shell 37 fixedly mounted on the top of the support base 1, the protective shell 37 is a cavity structure with an opening at the bottom end, the outer fixed sleeve of the rotating shaft 4 is provided with a first gear 38 located in the protective shell 37, the top of the support base 1 is fixedly connected to a servo motor 39 located in the protective shell 37, the output end of the servo motor 39 is fixedly connected to a second gear 40 meshing with the first gear 38, the translation pressing structure includes a slide 41 fixedly mounted on the movable base 11, a plurality of second slide grooves 42 are provided on the support base 1, and the end of the slide 41 away from the movable base 11 is located in the corresponding second slide groove 42, the bottom of the movable base 11 is fixedly connected to a first support column 43, the outer rotating sleeve of the rotating shaft 4 is provided with a second gear 40 located in the support base 11, and the second gear 40 meshing with the first gear 38 is fixedly connected to the first support column 43. The second rotating frame 44 below the seat 1, the top of the second rotating frame 44 is fixedly connected with a plurality of support blocks 45, and the number of support blocks 45 and the first support column 43 is the same, the support block 45 is provided with an inclined surface adapted to the first support column 43, the top of the second rotating frame 44 is fixedly connected with a third damping disk 46, the outer fixed sleeve of the rotating shaft 4 is provided with a fourth damping disk 47, the bottom of the fourth damping disk 47 is in contact with the top of the third damping disk 46, the opening of the sampling box 2 is fixedly connected with a sealing ring 48, and the sealing ring 48 is in contact with the outer wall of the shielding sleeve 6, a mounting bracket 56 is provided above the shielding sleeve 6, and the mounting bracket 56 is fixedly connected to the support seat 1, and the top of the mounting bracket 56 is fixedly connected with a plurality of hanging rings 57;

[0038] When the sampling device has not been placed in the groundwater, the driver drives the rotating shaft 4 to rotate, and the rotating shaft 4 drives the fourth damping disc 47 to rotate. The fourth damping disc 47 drives the third damping disc 46 and the second rotating frame 44 to rotate through friction. The second rotating frame 44 drives the support block 45 to move, and the first support column 43 slides in contact with the inclined surface on the support block 45. The support block 45 pushes the first support column 43 and the movable seat 11 toward the support seat 1, and the slide plate 41 slides relative to the second slide groove 42, so that the sampling box 2 located above the movable seat 11 moves toward the shielding sleeve 6, thereby making the sealing ring 48 at the opening of the sampling box 2 abut against the shielding sleeve 6. When the force of the sampling box 2 pressing the shielding sleeve 6 reaches a preset value, as the fourth damping disc 47 continues to rotate, the fourth damping disc 47 cannot drive the third damping disc 46 and the second rotating frame through friction. 44 rotates synchronously, and the sealing ring 48 abuts against the shielding sleeve 6. The design of the sealing ring 48 increases the sealing between the sampling box 2 and the shielding sleeve 6. When the sampling is completed, the groundwater in the sampling box 2 is discharged through the drain pipe 3, and all the fixed relationships between the sampling box 2 and the movable seat 11 are released, the fourth damping disk 47 is driven to rotate in the opposite direction by the rotating shaft 4, so that the fourth damping disk 47 drives the third damping disk 46 and the second rotating frame 44 to rotate in the opposite direction through friction. The support block 45 no longer applies pressure to the first support column 43, and the sampling box 2 no longer applies pressure to the shielding sleeve 6, so that the sealing ring 48 no longer abuts against the shielding sleeve 6, which facilitates the sampling box 2 to be taken down from the top of the movable seat 11. The lifting ring 57 is fixed to the external lifting equipment by a rope, and the support seat 1 is supported by the mounting frame 56 and the lifting ring 57.

[0039] Working principle: the support base 1 is fixed to an external lifting device through a rope, and the lifting device drives the support base 1 to descend to a preset depth in the groundwater, and the driver drives the rotating shaft 4 to rotate, and the rotating shaft 4 drives the shielding sleeve 6 to rotate synchronously through the damping transmission structure, so that the filter screen 8 located on the shielding sleeve 6 moves to the side of the corresponding sampling box 2, and the filter screen 8 and the opening on the sampling box 2 overlap each other, and the rotating shaft 4 stops and drives the shielding sleeve 6 to rotate synchronously through the damping transmission structure, and filters the debris in the water through the filter screen 8, and the groundwater flows into the sampling box 2 through the filter screen 8, and the rotating shaft 4 drives the cleaning brush 10 to rotate continuously through the mounting plate 9, and the cleaning brush 10 periodically cleans the filter screen 8. When the sampling box 2 is filled with groundwater, the rotating shaft 4 drives the shielding sleeve 6 through the damping transmission structure again When the filter screen 8 is moved to the side of the next sampling box 2, the filter screen 8 is no longer located on the side of the corresponding sampling box 2. When the lifting device drives the support base 1 to move down to the next preset depth, the rotating shaft 4 drives the shielding sleeve 6 to rotate synchronously again through the damping transmission structure, so that the filter screen 8 on the shielding sleeve 6 moves to the side of the next sampling box 2, and the groundwater can be sampled again. The above sampling steps are repeated until all the sampling boxes 2 are sampled. The support base 1 is driven to move up to the initial height by the lifting device, and the drain pipe 3 is opened by the opening and closing unit to take out the groundwater in the sampling box 2. The worker does not need to place the sampling device in the groundwater multiple times. The sampling device only needs to be placed in the groundwater once to obtain groundwater at different depths, which improves the convenience of sampling.

[0040] When the driver drives the rotating shaft 4 to rotate, the rotating shaft 4 drives the second damping disc 13 to rotate, and the second damping disc 13 drives the first damping disc 12, the first rotating frame 5 and the shielding sleeve 6 to rotate through friction. When the shielding sleeve 6 drives the filter screen 8 to move to one side of one of the sampling boxes 2, the first rotating frame 5 contacts the stop frame 16, and the first rotating frame 5 and the shielding sleeve 6 stop rotating. As the rotating shaft 4 continues to rotate, the second damping disc 13 cannot drive the first damping disc 12 to rotate continuously through friction, and the rotating shaft 4 drives the cleaning brush 10 to rotate continuously through the mounting plate 9, and the cleaning brush 10 periodically cleans the filter screen 8. When the rotating shaft 4 needs to drive the first rotating frame 5 and the shielding sleeve 6 to rotate synchronously, the hydraulic telescopic rod 15 drives the lifting ring 14 and the stop frame 16 to move upward so that the stop frame 16 no longer contacts the first rotating frame 5. As the rotating shaft 4 continues to rotate, the second damping disc 13 can pass again When the first rotating frame 5 contacts the stop frame 16 again, the shielding sleeve 6 drives the filter screen 8 to move between the two adjacent sampling boxes 2. When the next sampling is required, the hydraulic telescopic rod 15 drives the lifting ring 14 and the stop frame 16 to move up again, and the stop frame 16 no longer limits the first rotating frame 5. As the rotating shaft 4 continues to rotate, the rotating shaft 4 drives the first rotating frame 5 and the shielding sleeve 6 to rotate synchronously again. The hydraulic telescopic rod 15 drives the lifting ring 14 and the stop frame 16 to move down again. When the rotating shaft 4 drives the filter screen 8 to move to one side of the next sampling box 2 through the first rotating frame 5 and the shielding sleeve 6, the first rotating frame 5 contacts the stop frame 16 again, so that the shielding sleeve 6 and the filter screen 8 can be moved to the preset position again and then stop.

[0041] When the sampling is completed, the support seat 1 is removed from the groundwater, and the shielding sleeve 6 drives the filter screen 8 to move between the two adjacent sampling boxes 2. When the filter screen 8 no longer overlaps with the opening of the sampling box 2, the stop frame 16 is in contact with the first rotating frame 5. When the rotating shaft 4 rotates, the rotating shaft 4 will not drive the first rotating frame 5 and the shielding sleeve 6 to rotate synchronously. At this time, the second gear 40 is driven to rotate by the servo motor 39, and the second gear 40 drives the rotating shaft 4 to rotate through the first gear 38. The rotating shaft 4 drives the lifting frame 19 and the first movable column 22 to rotate synchronously through the first guide block 25. The first compression spring 23 is in a compressed state. At this time, the first compression spring 23 applies pressure to the first movable column 22 and the first guide block 25 to make the top of the first guide block 25 and The top inner wall of the guide hole 24 is in contact with each other, and the lifting frame 19 is in the highest position. At this time, the tension spring 29 is in a tensioned state. The tension spring 29 applies tension to the second movable column 28 and the first sealing disk 17, so that the top of the first sealing disk 17 and the bottom of the drain pipe 3 are tightly attached. The second compression spring 53 is in a compressed state. The second compression spring 53 applies pressure to the fixed disk 52, the piston column 51 and the second sealing disk 49, so that the top of the second sealing disk 49 and the top inner wall of the sampling box 2 are tightly attached. The second sealing disk 49 seals the air inlet 50. When the end of the lifting frame 19 moves into one of the first slide grooves 20, the hydraulic telescopic rod 15 drives the lifting ring 14 to move downward, and the lifting ring 14 presses the lifting frame 19 to make the lifting frame 19 pass through the fixed block 1 8 drives the first sealing disk 17 and the second movable column 28 to move downward relative to the drain pipe 3 and the movable seat 11, so as to open the drain pipe 3. When the lifting frame 19 moves downward, the lifting frame 19 drives the first movable column 22 and the pressing frame 55 to move downward through the first guide block 25. The pressing frame 55 presses the corresponding second support column 54 and the second sealing disk 49 so that the second sealing disk 49 no longer contacts the top inner wall of the sampling box 2, so that the air inlet 50 is in an open state. When the drain pipe 3 is draining, the sampling box 2 can take in air through the air inlet 50, so as to quickly complete the discharge of groundwater. When the drainage is completed, the lifting ring 14 and the lifting frame 19 are driven to continue to move downward through the hydraulic telescopic rod 15, so that the lifting frame 19 pushes the movable plate 35 through the fixed block 18. When the first movable column 22 and the pressing frame 55 are rotated by the rotating shaft 4, so that the pressing frame 55 is no longer located above the corresponding sampling box 2, the staff can drive the sampling box 2 to move up to make the iron block 30 disengage from the limiting sleeve 31, and the removal of the sampling box 2 can be completed. When the lifting ring 14 moves downward, the lifting ring 14 drives the stop frame 16 to move downward synchronously with respect to the first rotating frame 5, and the stop frame 16 always keeps in contact with the first rotating frame 5.When the hydraulic telescopic rod 15 drives the lifting ring 14 to move upward, the first compression spring 23 drives the first movable column 22, the first guide block 25 and the lifting frame 19 to move upward synchronously, and the tension spring 29 drives the second movable column 28 and the first sealing disk 17 to move upward. When the lifting frame 19 is reset to the initial height, the first sealing disk 17 and the fixed block 18 are synchronously reset to the initial position. The end of the lifting frame 19 is driven to rotate into the next first chute 20 by the rotating shaft 4. The hydraulic telescopic rod 15 drives the lifting ring 14 to move downward, so that the corresponding drain pipe 3 can be opened again or the fixed relationship between the sampling box 2 and the movable seat 11 can be released.

[0042] When the sampling device has not been placed in the groundwater, the driver drives the rotating shaft 4 to rotate, and the rotating shaft 4 drives the fourth damping disc 47 to rotate. The fourth damping disc 47 drives the third damping disc 46 and the second rotating frame 44 to rotate through friction. The second rotating frame 44 drives the support block 45 to move, and the first support column 43 slides in contact with the inclined surface on the support block 45. The support block 45 pushes the first support column 43 and the movable seat 11 toward the support seat 1, and the slide plate 41 slides relative to the second slide groove 42, so that the sampling box 2 located above the movable seat 11 moves toward the shielding sleeve 6, thereby making the sealing ring 48 at the opening of the sampling box 2 abut against the shielding sleeve 6. When the force of the sampling box 2 pressing the shielding sleeve 6 reaches a preset value, as the fourth damping disc 47 continues to rotate, the fourth damping disc 47 cannot drive the third damping disc 46 and the second rotating frame through friction. 44 rotates synchronously, and the sealing ring 48 abuts against the shielding sleeve 6. The design of the sealing ring 48 increases the sealing between the sampling box 2 and the shielding sleeve 6. When the sampling is completed, the groundwater in the sampling box 2 is discharged through the drain pipe 3, and all the fixed relationships between the sampling box 2 and the movable seat 11 are released, the fourth damping disk 47 is driven to rotate in the opposite direction by the rotating shaft 4, so that the fourth damping disk 47 drives the third damping disk 46 and the second rotating frame 44 to rotate in the opposite direction through friction. The support block 45 no longer applies pressure to the first support column 43, and the sampling box 2 no longer applies pressure to the shielding sleeve 6, so that the sealing ring 48 no longer abuts against the shielding sleeve 6, which facilitates the sampling box 2 to be taken down from the top of the movable seat 11. The lifting ring 57 is fixed to the external lifting equipment by a rope, and the support seat 1 is supported by the mounting frame 56 and the lifting ring 57.

[0043] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

Claims

1. A sampling device for groundwater detection, comprising a support base (1), characterized in that: The support base (1) is provided with a rotating shaft (4) connected in rotation, the support base (1) is provided with a driver for driving the rotating shaft (4) to rotate, the outer sleeve of the rotating shaft (4) is provided with a shielding sleeve (6), the rotating shaft (4) is provided with a damping transmission structure adapted to the shielding sleeve (6), a plurality of sampling boxes (2) uniformly distributed in a circumference are provided above the support base (1), the sampling boxes (2) are a cavity structure with an opening at one end, and the opening directions of the plurality of sampling boxes (2) are all toward the shielding sleeve (6), a mounting hole (7) is provided on the shielding sleeve (6), and a filter screen (8) adapted to the sampling box (2) is fixedly connected in the mounting hole (7); The rotating shaft (4) is fixedly mounted with a mounting plate (9), the mounting plate (9) is fixedly mounted with a cleaning brush (10) adapted to the filter screen (8), the bottom of the sampling box (2) is fixedly connected with a drain pipe (3), the outer sliding sleeve of the drain pipe (3) is provided with a movable seat (11), the support seat (1) is mounted with a translation pressing structure adapted to the movable seat (11), the movable seat (11) is mounted with an opening and closing unit adapted to the drain pipe (3), and the movable seat (11) is mounted with a magnetic fixing mechanism adapted to the sampling box (2); The damping transmission structure includes a first rotating frame (5) rotatably sleeved on the outside of the rotating shaft (4), and the top of the shielding sleeve (6) is fixedly connected to the bottom of the first rotating frame (5), the bottom of the first rotating frame (5) is fixedly connected to a first damping disc (12), the external fixed sleeve of the rotating shaft (4) is provided with a second damping disc (13), and the top of the second damping disc (13) is in contact with the bottom of the first damping disc (12), and the support seat (1) is equipped with a stopper adapted to the first rotating frame (5); The stopper comprises a lifting ring (14) arranged below the support seat (1), a plurality of hydraulic telescopic rods (15) are fixedly connected to the top of the support seat (1), and the telescopic ends of the hydraulic telescopic rods (15) are fixedly connected to the top of the lifting ring (14), and at least one stop frame (16) is fixedly connected to the top of the lifting ring (14), the stop frame (16) passes through the support seat (1), and the side wall of the stop frame (16) is in contact with the first rotating frame (5).

2. The sampling device for groundwater detection according to claim 1, characterized in that: The opening and closing unit includes a first sealing disk (17) arranged below the drain pipe (3), the top of the first sealing disk (17) contacts the bottom of the drain pipe (3), the movable seat (11) is equipped with a stretching piece adapted to the first sealing disk (17), the bottom of the first sealing disk (17) is fixedly connected to a fixed block (18), the top of the rotating shaft (4) is provided with a first groove (21), a first movable column (22) is provided in the first groove (21), and the bottom end of the first movable column (22) and the first groove are connected. The bottom inner wall of the first groove (21) is connected by a first compression spring (23), the outer sliding sleeve of the rotating shaft (4) is provided with a lifting frame (19) located below the lifting ring (14), a guide hole (24) is provided on the inner wall of the first groove (21), a first guide block (25) is slidably provided in the guide hole (24), and the first guide block (25) is fixedly connected to the lifting frame (19) and the first movable column (22) respectively, and the fixed block (18) is provided with a first sliding groove (20) adapted to the lifting frame (19).

3. The sampling device for groundwater detection according to claim 2, characterized in that: The stretching member includes a plurality of fixed columns (26) arranged above the first sealing disk (17), the bottom of the fixed column (26) is fixedly connected to the top of the movable seat (11), a second groove (27) is provided at the bottom of the fixed column (26), a second movable column (28) is slidably provided in the second groove (27), the top of the second movable column (28) and the top inner wall of the second groove (27) are connected by a stretching spring (29), the bottom end of the second movable column (28) passes through the movable seat (11), and the bottom end of the second movable column (28) is fixedly connected to the top of the first sealing disk (17).

4. The sampling device for groundwater detection according to claim 2, characterized in that: The magnetic fixing mechanism includes at least one iron block (30) fixedly mounted on the bottom of the sampling box (2), an outer sliding sleeve of the iron block (30) is provided with a limiting sleeve (31), the bottom of the limiting sleeve (31) is fixedly connected to the top of the movable seat (11), a magnet block (32) is slidably provided in the limiting sleeve (31), the top of the magnet block (32) is in contact with the bottom of the iron block (30), a guide groove (33) is provided on the inner wall of the limiting sleeve (31), a second guide block (34) is slidably provided in the guide groove (33), and the second guide block (34) is fixedly connected to the corresponding magnet block (32), a movable plate (35) is provided below the fixed block (18), the magnet block (32) and the movable plate (35) are connected by a connecting column (36), and the connecting column (36) passes through the movable seat (11).

5. The sampling device for groundwater detection according to claim 1, characterized in that: The driver comprises a protective shell (37) fixedly mounted on the top of the support base (1), the protective shell (37) being a cavity structure with an open bottom end, an outer fixed sleeve of the rotating shaft (4) being provided with a first gear (38) located in the protective shell (37), a servo motor (39) located in the protective shell (37) being fixedly connected to the top of the support base (1), and an output end of the servo motor (39) being fixedly connected to a second gear (40) meshing with the first gear (38).

6. The sampling device for groundwater detection according to claim 1, characterized in that: The translation pressing structure includes a slide plate (41) fixedly mounted on the movable seat (11), a plurality of second slide grooves (42) are provided on the support seat (1), and an end of the slide plate (41) away from the movable seat (11) is located in the corresponding second slide groove (42), the bottom of the movable seat (11) is fixedly connected to a first support column (43), the outer rotating sleeve of the rotating shaft (4) is provided with a second rotating frame (44) located below the support seat (1), the top of the second rotating frame (44) is fixedly connected to a plurality of support blocks (45), and the support The number of support blocks (45) and the number of first support columns (43) are the same, and the support blocks (45) are provided with an inclined surface adapted to the first support columns (43). The top of the second rotating frame (44) is fixedly connected to a third damping disc (46), and the outer fixed sleeve of the rotating shaft (4) is provided with a fourth damping disc (47). The bottom of the fourth damping disc (47) is in contact with the top of the third damping disc (46). A sealing ring (48) is fixedly connected to the opening of the sampling box (2), and the sealing ring (48) is in contact with the outer wall of the shielding sleeve (6).

7. The sampling device for groundwater detection according to claim 2, characterized in that: The sampling box (2) is provided with a second sealing disk (49), and the top inner wall of the sampling box (2) is provided with an air inlet (50) located above the second sealing disk (49). The top of the second sealing disk (49) contacts the top inner wall of the sampling box (2). The top of the second sealing disk (49) is fixedly connected to a plurality of piston columns (51), and the top of the piston columns (51) is fixedly connected to a fixed disk (52) located above the sampling box (2). The bottom of the fixed disk (52) and the top of the sampling box (2) are connected by a second compression spring (53). The top of the second sealing disk (49) is fixedly connected to a second support column (54), and the second support column (54) passes through the air inlet (50). A pressing frame (55) adapted to the second support column (54) is provided above the rotating shaft (4), and the pressing frame (55) is fixedly connected to the top of the first movable column (22).

8. The sampling device for groundwater detection according to claim 1, characterized in that: A mounting frame (56) is provided above the shielding sleeve (6), and the mounting frame (56) is fixedly connected to the support seat (1), and a plurality of hanging rings (57) are fixedly connected to the top of the mounting frame (56).

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