Biological culture observation device for contaminated soil remediation

Abstract

The application discloses a kind of biological culture observation experimental devices of contaminated soil remediation, it is related to experimental equipment technical field, including work tank, water tank is arranged in the work tank, recovery tank is arranged in the work tank, water pump is arranged in the top of work tank.The application is positioned by the setting of first telescopic plate, two baffle, two second telescopic plate, four positioning columns, U-shaped pull rod, two U-shaped locating plate, a plurality of positioning holes and a plurality of locating grooves, the positioning of arc-shaped jaw is realized, corresponding baffle and locating plate are driven to move synchronously, so that plant can be accurately positioned even when root surface specific position is difficult to observe in soil, and because positioning hole is adapted to the tapered shape of plant root, when experimenters want to sample any height and any growth stage of root surface soil sample, corresponding positioning hole is directly inserted to remove corresponding soil, and plant root will not be damaged.

Description

Technical Field

[0001] This invention relates to the field of experimental equipment technology, specifically to a biological culture and observation experimental device for the remediation of contaminated soil. Background Technology

[0002] An incubator is a temperature-controlled chamber primarily used for culturing microorganisms, plant cells, and animal cells. It is a fundamental experimental device for research departments in biology, agriculture, medicine, and environmental protection. Incubators are widely used for constant-temperature culture and constant-temperature reaction experiments. The relationship between microorganisms and plants in nature is extremely close. A large number of microorganisms exist in the roots, rhizosphere, surface, leaves, and even within tissues of plants, and the distribution of microorganisms varies slightly depending on the location of the roots and root surface.

[0003] Patent CN112608826B discloses an incubator for observing microbial growth, belonging to the field of experimental equipment technology. It includes a chamber, an inner door, and an outer door. The chamber contains several support plates, on which several petri dishes are mounted. The inner door is hinged to the chamber, and the outer door is slidably connected to the chamber. The inner door has several through holes, each fitted with a sealing ring. The outer door has several support seats, each with a scanner. The scanner is connected to an image acquisition module, which in turn is connected to an image processing module. The image processing module is connected to a display screen, which is located on the outer door and displays a graph of mycelial growth rate.

[0004] The aforementioned device is connected to a display screen via an image processing module. The display screen is mounted on the outer door and is used to display a curve of mycelial growth rate. However, the actual simulated experimental environment needs to be close to the actual ecology. However, the existing technology cannot effectively sample and observe the microorganisms on the root surface and rhizosphere of plants. Furthermore, as the roots of plants grow and thicken, it is difficult to observe the specific growth of plant roots inside the soil. As a result, sampling at the root surface is not only troublesome but also prone to damaging the plants during sampling. Summary of the Invention

[0005] The present invention addresses the problem that existing technical solutions are too simplistic by providing a solution that is significantly different from existing technologies. Specifically, the purpose of the present invention is to provide a biological culture and observation experimental device for contaminated soil remediation to solve the problems mentioned in the background.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a biological culture observation experimental device for contaminated soil remediation, comprising a working box, a water tank inside the working box, a recycling box inside the working box, a water pump on the top of the working box, a connecting pipe on the top of the water tank communicating with the input end of the water pump, a telescopic pipe on the top of the water pump, and a spray plate at the end of the telescopic pipe, characterized in that: an observation box is provided on the top of the working box, a sliding plate is provided at the bottom of the observation box, a thick rod is fixedly provided inside the observation box, a sampling groove is provided in the middle of the thick rod, a guide plate is fixedly provided at one end of the sampling groove, a thin rod is fixedly provided on the top of the thick rod, two clamping and positioning mechanisms are provided on the thin rod, telescopic cooperation mechanisms are provided at the ends of the two clamping and positioning mechanisms, two arc-shaped sampling mechanisms are inserted into the telescopic cooperation mechanisms, two double-moving mechanisms are provided at the ends of the two clamping and positioning mechanisms, and the observation box facing the telescopic cooperation mechanism is plateless.

[0007] Preferably, each of the clamping and positioning mechanisms includes two arc-shaped grippers, two rotating shafts, two U-shaped telescopic rods, and two telescopic blocks. The two arc-shaped grippers are rotatably mounted on the thin rods, the two rotating shafts are respectively fixedly mounted at the ends of the two arc-shaped grippers, the two U-shaped telescopic rods are respectively rotatably mounted at both ends of the two rotating shafts, and the telescopic blocks are slidably mounted on the back of the corresponding U-shaped telescopic rods.

[0008] Preferably, the distance from the gripping end of each gripper to the thin rod is twice the distance from the other end of the gripper to the thin rod.

[0009] Preferably, the telescopic mechanism includes two first telescopic plates, two baffles, two second telescopic plates, four positioning posts, a U-shaped tie rod, two U-shaped positioning plates, a plurality of positioning holes, and a plurality of positioning grooves. The two second telescopic plates are respectively fixedly installed on the side wall of the observation box. The two positioning plates are respectively installed on the inner side wall of the two second telescopic plates. The four positioning posts are fixedly installed on the positioning plates, and the four positioning posts are respectively fixedly connected to the movable end of the corresponding telescopic block. The two first telescopic plates are installed between the two positioning plates. The plurality of positioning holes are respectively installed on the two positioning plates. The plurality of positioning grooves are respectively installed inside the corresponding positioning holes. The two baffles are respectively inserted into the corresponding positioning posts. The two ends of the U-shaped tie rod are fixedly installed on the two baffles.

[0010] Preferably, each of the double-movement mechanisms includes a push rod, a U-shaped moving rod, two moving gears, a hollow plate, two moving racks, a bidirectional rack, and a fixing block. The push rod is fixedly mounted on the side wall of the corresponding U-shaped telescopic rod, the U-shaped moving rod is fixedly mounted at the end of the push rod, the two moving gears are rotatably mounted at both ends of the U-shaped moving rod, the hollow plate is fixedly mounted at the fixed end of the telescopic block, the bidirectional rack is slidably mounted inside the hollow plate, the fixing block is fixedly mounted at the end of the bidirectional rack, and both moving racks are fixedly mounted on the inner side wall of the hollow plate.

[0011] Preferably, the bidirectional rack meshes with two moving gears respectively, and the two moving racks mesh with two moving gears respectively.

[0012] Preferably, the observation box is made of plexiglass, and a filter layer is provided at the bottom of the observation box.

[0013] Preferably, each of the arc-shaped sampling mechanisms includes a sampling tube, a sliding groove, several connecting plates, a folding section, a first drive shaft, two limiting blocks, a second drive shaft, two U-shaped mounting brackets, and a third drive shaft. The sampling tube is inserted into the positioning hole, the folding section is located at the front end of the sampling tube, the two mounting brackets are fixedly located inside the sampling tube, the first drive shaft is located on the outer wall of the sampling tube, the second drive shaft is rotatably located between the two U-shaped mounting brackets, the third drive shaft is rotatably located between the two sampling brackets, the several connecting plates are located on the side of the folding section near the first drive shaft, the first and second drive shafts are in a driving engagement, the second and third drive shafts are in a driving engagement, the third drive shaft is in a frictional engagement with the inner wall of the sampling tube, the sliding groove is located on the sampling tube, and the two limiting blocks are fixedly located at the end of the sampling tube.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) The present invention, through the setting of a first telescopic plate, two baffles, two second telescopic plates, four positioning columns, a U-shaped tie rod, two U-shaped positioning plates, several positioning holes and several positioning grooves, realizes the positioning of the arc-shaped gripper, which drives the corresponding baffles and positioning plates to move synchronously. This allows the plant to be accurately positioned even when it is difficult to observe the specific location of the root surface in the soil. Furthermore, since the positioning holes are adapted to the conical shape of the plant roots, the experimenters can directly find the corresponding positioning hole and insert it to take out the corresponding soil without damaging the plant roots, regardless of the height and growth stage of the root surface soil sample. In addition, the setting of the positioning plate allows the experimenters to more intuitively observe the thickness and growth of the plant roots, making the experimental data observation more intuitive, simple to operate, convenient and quick.

[0016] (2) This invention, through the setting of arc-shaped grippers, two rotating shafts, two U-shaped telescopic rods and two telescopic blocks, realizes the positioning of the cone angle of the plant root and the diameter of different subsequent growth positions through two sets of grippers. Furthermore, by setting the torque to twice that of the plant root, it ensures normal growth of the plant root during clamping and positioning, achieving the effect of labor-saving driving positioning. In addition, through the setting of push rod, U-shaped moving rod, two moving gears, hollow plate, two moving racks, bidirectional racks and fixing blocks, it realizes distance compensation for the arc-shaped grippers with double torque, so that the compensated position is parallel and aligned with the diameter of the corresponding arc-shaped gripper clamping point, thereby facilitating the experimenter to sample and observe the plant growth status.

[0017] (3) The present invention, through the setting of sampling tube, chute, several connecting plates, folding section, first drive shaft, two limit blocks, second drive shaft, two U-shaped mounting brackets and third drive shaft, realizes that the soil around the plant root surface can be sampled without damaging the plant root, and no manual adjustment is required, which is convenient and quick. Attached Figure Description

[0018] Figure 1 This is a schematic cross-sectional view of the internal structure of the working box of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the observation box of the present invention;

[0020] Figure 3 This is a schematic diagram of the telescopic cooperation mechanism of the present invention;

[0021] Figure 4 This is a schematic diagram of the clamping and positioning mechanism of the present invention;

[0022] Figure 5 This is a side view of the clamping and positioning mechanism of the present invention;

[0023] Figure 6 This is a cross-sectional view of the double-movement mechanism of the present invention;

[0024] Figure 7 This is a partial structural diagram of the arc-shaped sampling mechanism of the present invention;

[0025] Figure 8 This is a schematic diagram of the internal structure of the arc-shaped sampling mechanism of the present invention.

[0026] In the diagram: 1. Working box; 2. Recycling box; 3. Water tank; 5. Arc-shaped sampling mechanism; 51. Sampling tube; 52. Slide groove; 53. Connecting plate; 54. Folding section; 55. First drive shaft; 56. Limiting block; 57. Second drive shaft; 58. U-shaped mounting bracket; 59. Third drive shaft; 6. Clamping and positioning mechanism; 61. Arc-shaped gripper; 62. Rotating shaft; 63. U-shaped telescopic rod; 64. Telescopic block; 7. Telescopic cooperation mechanism; 71. First telescopic plate; 72. Baffle; 73. 74. Second telescopic plate; 75. Positioning post; 76. U-shaped tie rod; 77. U-shaped positioning plate; 78. Positioning hole; 89. Positioning groove; 10. Double movement mechanism; 11. Push rod; 12. U-shaped moving rod; 13. Moving gear; 14. Hollow plate; 15. Moving rack; 16. Bidirectional rack; 17. Fixing block; 18. Telescopic pipe; 19. Sprayer tray; 10. Observation box; 11. Thin rod; 12. Thick rod; 13. Guide plate; 14. Sliding plate; 15. Connecting pipe; 16. Water pump. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1-8An embodiment of the present invention provides a biological culture observation experimental device for contaminated soil remediation, comprising a working box 1, a water tank 3 inside the working box 1, a recycling box 2 inside the working box 1, a water pump 17 on the top of the working box 1, a connecting pipe 16 on the top of the water tank 3 communicating with the input end of the water pump 17, a telescopic pipe 9 on the top of the water pump 17, and a spray plate 10 at the end of the telescopic pipe 9. The device is characterized in that: an observation box 11 is provided on the top of the working platform, and a sliding plate 15 is provided at the bottom of the observation box 11. A thick rod 13 is fixedly installed inside the observation box 11. A sampling groove is provided in the middle of the thick rod 13. A guide plate 14 is fixedly installed at one end of the sampling groove. A thin rod 12 is fixedly installed at the top of the thick rod 13. Two clamping and positioning mechanisms 6 are provided on the thin rod 12. Telescopic cooperation mechanisms 7 are provided at the ends of the two clamping and positioning mechanisms 6. Two arc-shaped sampling mechanisms 5 are inserted into the telescopic cooperation mechanisms 7. Two double-moving mechanisms 8 are provided at the ends of the two clamping and positioning mechanisms 6. The side of the observation box 11 facing the telescopic cooperation mechanism 7 is plateless. First, the plant is planted on the clamping end of the clamping and positioning mechanism 6. Then, as the plant grows and its roots thicken, the clamping and positioning mechanism 6 rotates. The clamping and positioning mechanism 6 rotates and extends synchronously. The rotation of the clamping and positioning mechanism 6 drives the corresponding double-moving mechanism 8 to move twice the distance. When it is necessary to take soil samples for observation, the extension and retraction mechanism 7 is opened and the arc-shaped sampling mechanism 5 is inserted into it to sample the soil around the plant roots. When it is necessary to sample the soil at the root hairs, simply insert the sampling device into the sampling slot along the guide plate 14.

[0029] Specifically, each clamping and positioning mechanism 6 includes two arc-shaped grippers 61, two rotating shafts 62, two U-shaped telescopic rods 63, and two telescopic blocks 64. The two arc-shaped grippers 61 are rotatably mounted on the thin rod 12. The two rotating shafts 62 are respectively fixedly mounted at the ends of the two arc-shaped grippers 61. The two U-shaped telescopic rods 63 are respectively rotatably mounted at both ends of the two rotating shafts 62. The telescopic blocks 64 are slidably mounted on the back of the corresponding U-shaped telescopic rods 63. As the plant roots thicken, the arc-shaped grippers 61 rotate around the thin rod 12. The rotation of the arc-shaped grippers 61 causes the U-shaped telescopic rods 63 and rotating shafts 62 to move synchronously along the surface of the telescopic rods. This allows for the positioning of the cone angle of the plant roots and the diameter at different subsequent growth positions using two sets of grippers.

[0030] Specifically, the distance from the gripping end of each gripper to the thin rod 12 is twice the distance from the other end of the gripper to the thin rod 12. By setting the torque to twice that of the gripper, normal root growth is ensured during clamping and positioning, achieving a labor-saving driving positioning effect and facilitating subsequent observation, sampling, and other operations.

[0031] Specifically, the telescopic mechanism 7 includes two first telescopic plates 71, two baffles 72, two second telescopic plates 73, four positioning posts 74, a U-shaped tie rod 75, two U-shaped positioning plates 76, a plurality of positioning holes 77, and a plurality of positioning grooves 78. The two second telescopic plates 73 are respectively fixedly installed on the side wall of the observation box 11. The two positioning plates are respectively installed on the inner side wall of the two second telescopic plates 73. The four positioning posts 74 are fixedly installed on the positioning plates, and the four positioning posts 74 are respectively fixedly connected to the movable end of the corresponding telescopic block 64. The two first telescopic plates 71 are installed between the two positioning plates. The plurality of positioning holes 77 are respectively installed on the two positioning plates. The plurality of positioning grooves 78 are respectively installed inside the corresponding positioning holes 77. The two baffles 72 are respectively inserted into the corresponding positioning posts 74. The two ends of the U-shaped tie rod 75 are fixedly installed on the two baffles 72. The telescopic block 64 moves, causing the corresponding positioning plate to move. The movement of the positioning plate causes the first telescopic plate 71 to extend and simultaneously causes the second telescopic plate 73 to retract. Through the cooperation of the first telescopic plate 71 and the second telescopic plate 73, the two sides of the positioning plate are tightly fitted. When soil sampling is required, the pull rod is pulled to disassemble the baffle 72 simultaneously, and then the corresponding positioning hole 77 is inserted to sample the desired location. This achieves positioning through the arc-shaped gripper 61, which drives the corresponding baffle 72 and positioning plate to move synchronously. This allows for precise positioning of the plant even when the specific location of the root surface is difficult to observe in the soil. Furthermore, because the positioning hole 77 is adapted to the conical shape of the plant root, the experimenter can directly find the corresponding positioning hole 77 and insert it to extract the corresponding soil without damaging the plant root, regardless of the height or growth stage of the root surface soil sample. The positioning plate also allows the experimenter to more intuitively observe the thickness and growth of the plant root, making the experimental data observation more intuitive, simple, convenient and quick.

[0032] Specifically, each of the double-movement mechanisms 8 includes a push rod 81, a U-shaped moving rod 82, two moving gears 83, a hollow plate 84, two moving racks 85, a bidirectional rack 86, and a fixing block 87. The push rod 81 is fixedly mounted on the side wall of the corresponding U-shaped telescopic rod 63. The U-shaped moving rod 82 is fixedly mounted at the end of the push rod 81. The two moving gears 83 are rotatably mounted at both ends of the U-shaped moving rod 82. The hollow plate 84 is fixedly mounted at the fixed end of the telescopic block 64. The bidirectional rack 86 is slidably mounted inside the hollow plate 84. The fixing block 87 is fixedly mounted at the end of the bidirectional rack 86. The two moving racks 85 are both fixedly mounted on the inner side wall of the hollow plate 84. The movement of the U-shaped telescopic rod 63 drives the push rod 81 to move. The movement of the push rod 81 drives the moving gears 83 to move synchronously. The movement of the moving gears 83 causes them to rotate by contacting the moving racks 85. The movement and rotation of the moving gears 83 simultaneously drive the bidirectional racks 86 to move synchronously by double the distance. Distance compensation was achieved for the arc-shaped gripper 61 with double torque, so that the compensated position is parallel and aligned with the diameter of the corresponding arc-shaped gripper 61, which facilitates the experimenter to take samples and observe the plant growth status.

[0033] Specifically, the bidirectional rack 86 meshes with two moving gears 83 respectively, and the two moving racks 85 mesh with two moving gears 83 respectively.

[0034] Specifically, the observation box 11 is made of plexiglass, and a permeation layer is provided at the bottom of the observation box 11.

[0035] Each of the specific arc-shaped sampling mechanisms 5 includes a sampling tube 51, a slide groove 52, several connecting plates 53, a folding section 54, a first drive shaft 55, two limiting blocks 56, a second drive shaft 57, two U-shaped mounting brackets 58, and a third drive shaft 59. The sampling tube 51 is inserted into the positioning hole 77. The folding section 54 is located at the front end of the sampling tube 51. The two mounting brackets are fixedly located inside the sampling tube 51. The first drive shaft 55 is located on the outer wall of the sampling tube 51. The second drive shaft 57 is rotatably located between the two U-shaped mounting brackets 58. The third drive shaft 59 is rotatably located between the two sampling brackets. Several connecting plates 53 are located on the side of the folding section 54 near the first drive shaft 55. The first drive shaft 55 and the second drive shaft 57 are in a driving engagement. The second drive shaft 57 and the third drive shaft 59 are in a driving engagement. The third drive shaft 59 is in a frictional engagement with the inner wall of the sampling tube 51. The slide groove 52 is located on the sampling tube 51. The two limiting blocks 56 are fixedly located at the end of the sampling tube 51. By inserting the sampling tube 51 along the positioning hole 77, the first drive shaft 55 rubs against the side wall of the plant root, causing the second drive shaft 57 to rotate. The rotation of the second drive shaft 57 causes the third drive shaft 59 to rotate, and the rotation of the third drive shaft 59 causes the folded section 54 near the third drive shaft 59 to open, thereby bending the front end of the sampling tube 51. This allows the sampling tube 51 to take samples along the arc of the plant root. This enables soil sampling around the plant root surface without damaging the plant root, and it is convenient and quick without the need for manual adjustment.

[0036] Working principle: First, the plant is planted on the clamping end of the clamping and positioning mechanism 6. As the plant grows, its roots thicken, causing the arc-shaped gripper 61 to rotate around the thin rod 12. The rotation of the arc-shaped gripper 61 causes the U-shaped telescopic rod 63 and the rotating shaft 62 to move synchronously along the surface of the telescopic rod. The movement of the telescopic block 64 causes the corresponding positioning plate to move. The movement of the positioning plate causes the first telescopic plate 71 to extend and simultaneously causes the second telescopic plate 73 to retract. Through the cooperation of the first telescopic plate 71 and the second telescopic plate 73, the two sides of the positioning plate are tightly fitted. The movement of the U-shaped telescopic rod 63 causes the push rod 81 to move. The movement of the push rod 81 causes the moving gear 83 to move synchronously. The movement of the moving gear 83 causes it to rotate by contacting the moving rack 85. The movement and rotation of the moving gear 83 simultaneously causes the bidirectional rack 86 to move twice the distance synchronously. When soil sampling is required, pull the lever to disassemble the baffle 72 simultaneously. Then, insert the sampling tube 51 along the positioning hole 77, so that the first drive shaft 55 rubs against the side wall of the plant root, causing the second drive shaft 57 to rotate. The rotation of the second drive shaft 57 causes the third drive shaft 59 to rotate, and the rotation of the third drive shaft 59 causes the folded section 54 near the third drive shaft 59 to open, thereby bending the front end of the sampling tube 51. This allows the sampling tube 51 to sample along the arc of the plant root. When soil sampling is required at the root, simply insert the sampling device into the sampling slot along the guide plate 14.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A biological culture observation experimental device for contaminated soil remediation, comprising a working box (1), wherein a water tank (3) is provided inside the working box (1), a recycling box (2) is provided inside the working box (1), a water pump (17) is provided on the top of the working box (1), a connecting pipe (16) is provided on the top of the water tank (3) and connected to the input end of the water pump (17), a telescopic pipe (9) is provided on the top of the water pump (17), and a spray plate (10) is provided at the end of the telescopic pipe (9), characterized in that: The workbench top is provided with an observation box (11), the bottom of the observation box (11) is provided with a sliding plate (15), the inside of the observation box (11) is fixedly provided with a thick rod (13), the middle of the thick rod (13) is provided with a sampling groove, one end of the sampling groove is fixedly provided with a guide plate (14), the top of the thick rod (13) is fixedly provided with a thin rod (12), the thin rod (12) is provided with two clamping positioning mechanisms (6), the ends of the two clamping positioning mechanisms (6) are provided with telescopic cooperation mechanisms (7), the telescopic cooperation mechanisms (7) are insertedly provided with two arc-shaped sampling mechanisms (5), the ends of the two clamping positioning mechanisms (6) are provided with two double-movement mechanisms (8), and the side of the observation box (11) facing the telescopic cooperation mechanisms (7) is provided with no plate.

2. The biological culture observation device for contaminated soil remediation according to claim 1, characterized in that: Each clamping positioning mechanism (6) comprises two arc-shaped clamping jaws (61), two rotating shafts (62), two U-shaped telescopic rods (63) and two telescopic blocks (64), the two arc-shaped clamping jaws (61) are rotationally arranged on the thin rod (12), the two rotating shafts (62) are fixedly arranged at the ends of the two arc-shaped clamping jaws (61), the two U-shaped telescopic rods (63) are rotationally arranged at the two ends of the two rotating shafts (62), and the telescopic blocks (64) are slidingly arranged on the back surfaces of the corresponding U-shaped telescopic rods (63).

3. The device according to claim 2, wherein the device is characterized by: The distance from the clamping end of each clamping jaw to the thin rod (12) is twice the distance from the other end of the clamping jaw to the thin rod (12).

4. The device according to claim 3, wherein the device is characterized by: The telescopic cooperation mechanism (7) comprises two first telescopic plates (71), two baffle plates (72), two second telescopic plates (73), four positioning columns (74), a U-shaped pull rod (75), two U-shaped positioning plates (76), a plurality of positioning holes (77) and a plurality of positioning grooves (78), the two second telescopic plates (73) are fixedly arranged on the side walls of the observation box (11), the two positioning plates are arranged on the inner side walls of the two second telescopic plates (73), the four positioning columns (74) are fixedly arranged on the positioning plates, the four positioning columns (74) are fixedly connected with the movable ends of the corresponding telescopic blocks (64), the two first telescopic plates (71) are arranged between the two positioning plates, the plurality of positioning holes (77) are arranged on the two positioning plates, the plurality of positioning grooves (78) are arranged in the corresponding positioning holes (77), the two baffle plates (72) are insertedly arranged on the corresponding positioning columns (74), and the U-shaped pull rod (75) is fixedly arranged at the two ends of the two baffle plates (72).

5. The device according to claim 4, wherein the device is characterized by: Each double moving mechanism (8) comprises a push rod (81), a U-shaped moving rod (82), two moving gears (83), a hollow plate (84), two moving racks (85), a bidirectional rack (86) and a fixed block (87), the push rod (81) is fixedly arranged at the side wall of the corresponding U-shaped telescopic rod (63), the U-shaped moving rod (82) is fixedly arranged at the end of the push rod (81), the two moving gears (83) are rotatably arranged at the two ends of the U-shaped moving rod (82), the hollow plate (84) is fixedly arranged at the fixed end of the telescopic block (64), the bidirectional rack (86) is slidably arranged in the hollow plate (84), and the fixed block (87) is fixedly arranged at the end of the bidirectional rack (86), and the two moving racks (85) are fixedly arranged on the inner side wall of the hollow plate (84).

6. The device according to claim 5, wherein the device is characterized by: The bidirectional rack (86) is meshed with the two moving gears (83), and the two moving racks (85) are meshed with the two moving gears (83).

7. The device according to claim 1, wherein the device is characterized by: The observation box (11) is made of organic glass, and the bottom of the observation box (11) is provided with a percolation layer.

8. The device according to claim 1, wherein the device is characterized by: Each arc-shaped sampling mechanism (5) comprises a sampling pipe (51), a chute (52), a plurality of connecting plates (53), a folding section (54), a first transmission shaft (55), two limiting blocks (56), a second transmission shaft (57), two U-shaped mounting racks (58) and a third transmission shaft (59), the sampling pipe (51) is inserted into the positioning hole (77), the folding section (54) is arranged at the front end of the sampling pipe (51), the two mounting racks are fixedly arranged in the sampling pipe (51), the first transmission shaft (55) is arranged on the outer side wall of the sampling pipe (51), the second transmission shaft (57) is rotatably arranged between the two U-shaped mounting racks (58), the third transmission shaft (59) is rotatably arranged between the two sampling racks, the plurality of connecting plates (53) are arranged on one side of the folding section (54) close to the first transmission shaft (55), the first transmission shaft (55) and the second transmission shaft (57) are in transmission cooperation, the second transmission shaft (57) and the third transmission shaft (59) are in transmission cooperation, the third transmission shaft (59) and the inner side wall of the sampling pipe (51) are in frictional cooperation, the chute (52) is arranged on the sampling pipe (51), and the two limiting blocks (56) are fixedly arranged at the ends of the sampling pipe (51).

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