Biological culture observation experimental device for contaminated soil remediation

Abstract

The invention discloses a biological culture observation experiment device for contaminated soil remediation, and relates to the technical field of experiment equipment, the biological culture observation experiment device comprises a working box, a water tank is arranged in the working box, a recycling box is arranged in the working box, and a water pump is arranged at the top of the working box. Through the arrangement of the first telescopic plate, the two baffles, the two second telescopic plates, four positioning columns, a U-shaped pull rod, two U-shaped positioning plates, a plurality of positioning holes and a plurality of positioning grooves, the corresponding baffles and the corresponding positioning plates are driven to move synchronously through positioning of the arc-shaped clamping jaws; therefore, even if the specific position of the root surface of the plant is difficult to observe in the soil, the plant can still be accurately positioned, and as the positioning hole is matched with the conical shape of the root of the plant, an experimenter can directly find the corresponding positioning hole and insert the corresponding positioning hole to take out the corresponding soil no matter what the experimenter wants to sample the soil sample of the root surface at any height and any growth stage. And the condition that the roots of the plants are damaged is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of experimental equipment, in particular to a biological cultivation observation experimental device for contaminated soil remediation. Background Art

[0002] An incubator is a temperature-controlled box device mainly used to culture microorganisms, plants and animal cells. It is a basic experimental equipment for scientific research departments related to biology, agriculture, medicine and environmental protection. Incubators are widely used in constant temperature culture and constant temperature reaction tests. The relationship between microorganisms and plants in nature is very close. There are a large number of microorganisms in the root system, rhizosphere, body surface, leaf surface and even inside the tissues of plants, and the distribution of microorganisms will be slightly different due to the different positions of the roots and root surfaces of plants.

[0003] The invention patent with patent number CN112608826B discloses an incubator for observing the growth of microorganisms, which belongs to the field of experimental equipment technology, and includes a box body, an inner box door and an outer box door. The box body is provided with a plurality of support plates, and a plurality of culture dishes are provided on the support plates. The inner box door is hinged to the box body, and the outer box door is slidably connected to the box body. The inner box door is provided with a plurality of through holes, and the through holes are sleeved with sealing rings. The outer box door is provided with a plurality of support seats, and scanners are provided on the plurality of support seats. The scanner is connected to an image acquisition module, and the image acquisition module is connected to an image processing module, and the image processing module is connected to a display screen. The display screen is arranged on the outer box door, and the display screen is used to display a mycelium growth rate curve.

[0004] The above-mentioned device is connected to a display screen through an image processing module. The display screen is arranged on the outer box door. The display screen is used to display a mycelium growth rate curve. However, the actual simulation 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. As the roots of the plants grow thicker, it is difficult to observe the specific growth conditions of the plant roots inside the soil, which makes sampling at the root surface not only troublesome but also easy to cause damage to the plants during sampling. Summary of the invention

[0005] The technical solution of the present invention aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology. Specifically, the purpose of the present invention is to provide a biological cultivation observation experimental device for contaminated soil remediation to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a biological culture observation experimental device for contaminated soil remediation, comprising a work box, a water tank is arranged inside the work box, a recovery box is arranged inside the work box, a water pump is arranged on the top of the work box, a connecting pipe is arranged on the top of the water tank to communicate with the water pump input end, a telescopic tube is arranged on the top of the water pump, and a spray plate is arranged on the end of the telescopic tube, characterized in that: an observation box is arranged on the top of the workbench, a sliding plate is arranged at the bottom of the observation box, a thick rod is fixedly arranged inside the observation box, a sampling groove is arranged in the middle of the thick rod, a guide plate is fixedly arranged at one end of the sampling groove, a thin rod is fixedly arranged on the top of the thick rod, two clamping and positioning mechanisms are arranged on the thin rod, and telescopic matching mechanisms are arranged at the ends of the two clamping and positioning mechanisms, two arc-shaped sampling mechanisms are plugged on the telescopic matching mechanism, and two double moving mechanisms are arranged at the ends of the two clamping and positioning mechanisms, and the observation box is arranged without a plate on the side facing the telescopic matching mechanism.

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

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

[0009] Preferably, the telescopic matching mechanism includes two first telescopic plates, two baffles, two second telescopic plates, four positioning columns, a U-shaped pull rod, two U-shaped positioning plates, a number of positioning holes and a number of positioning grooves. The two second telescopic plates are respectively fixed on the side walls of the observation box, the two positioning plates are respectively arranged on the inner walls of the two second telescopic plates, the four positioning columns are fixed on the positioning plates, and the four positioning columns are respectively fixedly connected to the corresponding movable ends of the telescopic blocks, the two first telescopic plates are arranged between the two positioning plates, the number of positioning holes are respectively arranged on the two positioning plates, the number of positioning grooves are respectively arranged inside the corresponding positioning holes, the two baffles are respectively plugged on the corresponding positioning columns, and the two ends of the U-shaped pull rod are fixed on the two baffles.

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

[0011] Preferably, the bidirectional rack is respectively meshed with two moving gears, and the two moving racks are respectively meshed with two moving gears.

[0012] Preferably, the observation box is made of organic glass, and a percolation layer is provided at the bottom of the observation box.

[0013] Preferably, each of the arc-shaped sampling mechanisms comprises a sampling tube, a slide groove, a plurality of connecting plates, a folding section, a first transmission shaft, two limit blocks, a second transmission shaft, two U-shaped mounting frames and a third transmission shaft. The sampling tube is plugged and arranged inside the positioning hole, the folding section is arranged at the front end of the sampling tube, the two mounting frames are fixedly arranged inside the sampling tube, the first transmission shaft is arranged on the outer wall of the sampling tube, the second transmission shaft is rotatably arranged between the two U-shaped mounting frames, the third transmission shaft is rotatably arranged between the two sampling frames, a plurality of connecting plates are arranged on the side of the folding section close to the first transmission shaft, the first transmission shaft and the second transmission shaft are transmission-matched, the second transmission shaft and the third transmission shaft are transmission-matched, the third transmission shaft and the inner wall of the sampling tube are frictionally matched, the slide groove is arranged on the sampling tube, and the two limit blocks are fixedly arranged at the end of the sampling tube.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The present invention realizes positioning through the arrangement of a first telescopic plate, two baffles, two second telescopic plates, four positioning columns, a U-shaped pull rod, two U-shaped positioning plates, a plurality of positioning holes and a plurality of positioning grooves, thereby driving the corresponding baffles and positioning plates to move synchronously, so that the plant can still be accurately positioned even when the specific position of the root surface is difficult to observe in the soil. In addition, since the positioning holes are adapted to the conical shape of the plant roots, when the experimenter wants to sample the root surface soil sample at any height and any growth stage, he can directly find the corresponding positioning hole and insert it to remove the corresponding soil without damaging the plant roots. In addition, through the arrangement of the positioning plate, the experimenter can more intuitively observe the root thickness growth of the plant, making the experimental data observation more intuitive, simple to operate, and convenient and fast.

[0016] (2) The present invention realizes positioning the conical angle of the plant root and the diameter of different positions of subsequent growth through the arrangement of arc-shaped clamping jaws, two rotating shafts, two U-shaped telescopic rods and two telescopic blocks, and ensures the normal growth of the plant root during clamping positioning by setting the torque to twice, thereby achieving the effect of labor-saving driving positioning, and also realizes distance compensation for the arc-shaped clamping jaw with double torque through the arrangement of a push rod, a U-shaped moving rod, two moving gears, a hollow plate, two moving racks, a bidirectional rack and a fixed block, so that the compensated position is parallel to the diameter of the clamping position of the corresponding arc-shaped clamping jaw, thereby facilitating the experimenter to take samples and observe the growth status of the plant;

[0017] (3) The present invention realizes the sampling of soil around the root surface of plants without damaging the roots of plants through the arrangement of a sampling tube, a slide groove, a plurality of connecting plates, a folding section, a first transmission shaft, two limit blocks, a second transmission shaft, two U-shaped mounting frames and a third transmission shaft, and does not require manual adjustment, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0020] Figure 3 It is a schematic diagram of the structure of the telescopic matching mechanism of the present invention;

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

[0022] Figure 5 It is a schematic diagram of the side structure of the clamping and positioning mechanism of the present invention;

[0023] Figure 6 It is a cross-sectional structural schematic diagram of the double moving mechanism of the present invention;

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

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

[0026] In the figure: 1, working box; 2, recovery box; 3, water tank; 5, arc-shaped sampling mechanism; 51, sampling tube; 52, slide; 53, connecting plate; 54, folding section; 55, first transmission shaft; 56, limit block; 57, second transmission shaft; 58, U-shaped mounting frame; 59, third transmission shaft; 6, clamping and positioning mechanism; 61, arc-shaped clamping claw; 62, rotating shaft; 63, U-shaped telescopic rod; 64, telescopic block; 7, telescopic matching mechanism; 71, first telescopic plate; 72, baffle; 73, Second telescopic plate; 74, positioning column; 75, U-shaped pull rod; 76, U-shaped positioning plate; 77, positioning hole; 78, positioning groove; 8, double moving mechanism; 81, push rod; 82, U-shaped moving rod; 83, moving gear; 84, hollow plate; 85, moving rack; 86, two-way rack; 87, fixed block; 9, telescopic tube; 10, spray plate; 11, observation box; 12, thin rod; 13, thick rod; 14, guide plate; 15, sliding plate; 16, connecting pipe; 17, water pump. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-8, an embodiment of the present invention: a biological cultivation observation experimental device for contaminated soil remediation, comprising a working box 1, a water tank 3 is arranged inside the working box 1, a recovery box 2 is arranged inside the working box 1, a water pump 17 is arranged on the top of the working box 1, a connecting pipe 16 is arranged on the top of the water tank 3 to communicate with the input end of the water pump 17, a telescopic pipe 9 is arranged on the top of the water pump 17, and a spray plate 10 is arranged at the end of the telescopic pipe 9, characterized in that: an observation box 11 is arranged on the top of the workbench, a sliding plate 15 is arranged at the bottom of the observation box 11, and the observation box 11 is provided with a sliding plate 15. A thick rod 13 is fixedly provided inside the observation box 11, a sampling slot is provided in the middle of the thick rod 13, a guide plate 14 is fixedly provided at one end of the sampling slot, a thin rod 12 is fixedly provided on the top of the thick rod 13, two clamping and positioning mechanisms 6 are provided on the thin rod 12, telescopic matching mechanisms 7 are provided at the ends of the two clamping and positioning mechanisms 6, two arc-shaped sampling mechanisms 5 are plugged on the telescopic matching mechanisms 7, two double moving mechanisms 8 are provided at the ends of the two clamping and positioning mechanisms 6, and the observation box 11 is set without a plate on the side facing the telescopic matching mechanism 7. First, plant the plant at the clamping end of the clamping positioning mechanism 6. Then, as the plant grows, the rhizome becomes thicker, thereby driving the clamping positioning mechanism 6 to rotate. The clamping positioning mechanism 6 rotates and telescopes to perform synchronous telescopic coordination. The rotation of the clamping positioning mechanism 6 drives the corresponding double moving mechanism 8 to move double the distance. When it is necessary to sample and observe the soil, the telescopic coordination mechanism 7 is opened, and the arc-shaped sampling mechanism 5 is inserted inside to sample the soil around the root surface of the plant. When it is necessary to sample the soil at the root, the sampling device only needs to be inserted into the sampling groove along the guide plate 14.

[0029] Specifically, each of the clamping and positioning mechanisms 6 includes 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 both rotatably arranged on the thin rod 12, the two rotating shafts 62 are respectively fixedly arranged at the ends of the two arc-shaped clamping jaws 61, the two U-shaped telescopic rods 63 are respectively rotatably arranged at the two ends of the two rotating shafts 62, and the telescopic blocks 64 are slidably arranged on the back of the corresponding U-shaped telescopic rods 63. As the roots of plants grow thicker, the arc-shaped clamping jaws 61 are driven to rotate around the thin rod 12, and the rotation of the arc-shaped clamping jaws 61 drives the U-shaped telescopic rods 63 and the rotating shafts 62 to move synchronously along the surface of the telescopic rods; the cone angle of the plant roots and the diameter of different positions of subsequent growth are positioned by two sets of clamping jaws.

[0030] Specifically, the distance between the clamping end of each clamping jaw and the thin rod 12 is twice the distance between the other end of the clamping jaw and the thin rod 12. By setting the torque to twice, the normal growth of the plant roots is ensured during clamping and positioning, achieving the effect of labor-saving driving and positioning, which is convenient for subsequent observation and sampling operations.

[0031] Specifically, the telescopic matching mechanism 7 includes two first telescopic plates 71, two baffles 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 respectively fixedly arranged on the side walls of the observation box 11, the two positioning plates are respectively 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, and the four positioning columns 74 are respectively fixedly connected to 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 respectively arranged on the two positioning plates, the plurality of positioning grooves 78 are respectively arranged inside the corresponding positioning holes 77, the two baffles 72 are respectively plugged on the corresponding positioning columns 74, and the two ends of the U-shaped pull rod 75 are fixedly arranged on the two baffles 72. The corresponding positioning plate is driven to move by the movement of the telescopic block 64, and the movement of the positioning plate drives the first telescopic plate 71 to extend and the second telescopic plate 73 to retract synchronously. Through the cooperation of the first telescopic plate 71 and the second telescopic plate 73, the two sides of the positioning plate are closely fitted. When soil sampling is required, the pull rod is pulled to drive the baffle plate 72 to be disassembled synchronously, and then the corresponding positioning hole 77 is inserted to sample the required sampling position; the positioning of the arc-shaped clamping claw 61 is achieved, and the corresponding baffle plate 72 and the positioning plate are driven to move synchronously, so that the plant can still be accurately positioned even when it is difficult to observe the specific position of the root surface in the soil. Since 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 take out the corresponding soil when sampling the root surface soil sample at any height and any growth stage, and will not damage the plant root. In addition, through the setting of the positioning plate, the experimenter can more intuitively observe the growth of the root thickness of the plant, making the experimental data observation more intuitive, simple to operate, convenient and fast.

[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 fixed block 87. The push rod 81 is fixedly arranged on 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 inside the hollow plate 84, 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 wall of the hollow plate 84. The push rod 81 is driven to move by the movement of the U-shaped telescopic rod 63, and the movement of the push rod 81 drives the moving gear 83 to move synchronously. The moving gear 83 moves so as to conflict with the moving rack 85 and rotate. The moving gear 83 moves and rotates while driving the bidirectional rack 86 to move synchronously by a double distance. Distance compensation is achieved for the arc-shaped clamping jaw 61 with double torque, so that the compensated position is parallel and aligned with the diameter of the clamping point of the corresponding arc-shaped clamping jaw 61, which is convenient for experimenters to take samples and observe the growth status of plants.

[0033] Specifically, the bidirectional rack 86 is meshed with the two moving gears 83 respectively, and the two moving racks 85 are meshed with the two moving gears 83 respectively.

[0034] Specifically, the observation box 11 is made of organic glass, and a percolation layer is provided at the bottom of the observation box 11 .

[0035] Specifically, each of the arc-shaped sampling mechanisms 5 includes a sampling tube 51, a slide 52, a plurality of connecting plates 53, a folding section 54, a first transmission shaft 55, two limit blocks 56, a second transmission shaft 57, two U-shaped mounting frames 58 and a third transmission shaft 59. The sampling tube 51 is inserted and arranged inside the positioning hole 77. The folding section 54 is arranged at the front end of the sampling tube 51. The two mounting frames are fixedly arranged inside the sampling tube 51. The first transmission shaft 55 is arranged on the outer side wall of the sampling tube 51. The second transmission shaft 57 is rotatably arranged between the two U-shaped mounting frames 58. The third transmission shaft 59 is rotatably arranged between the two sampling frames. A 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 transmission-matched. The second transmission shaft 57 and the third transmission shaft 59 are transmission-matched. The third transmission shaft 59 and the inner side wall of the sampling tube 51 are frictionally matched. The slide 52 is arranged on the sampling tube 51. The two limit blocks 56 are fixedly arranged at the end of the sampling tube 51. By inserting the sampling tube 51 along the positioning hole 77, the first transmission shaft 55 rubs against the side wall of the plant root, driving the second transmission shaft 57 to rotate, and the rotation of the second transmission shaft 57 drives the third transmission shaft 59 to rotate, and the rotation of the third transmission shaft 59 drives the folding section 54 close to the third transmission shaft 59 to open, so that the front end of the sampling tube 51 is bent, so that the sampling tube 51 can be sampled along the arc of the plant root; it is realized that the soil around the root surface of the plant can be sampled without damaging the plant root, and no manual adjustment is required, which is convenient and quick.

[0036] Working principle: first, plant the plant at the clamping end of the clamping and positioning mechanism 6. As the plant grows, its roots become thicker, thereby driving the arc-shaped clamping claw 61 to rotate around the thin rod 12. The rotation of the arc-shaped clamping claw 61 drives 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 drives the corresponding positioning plate to move. The movement of the positioning plate drives the first telescopic plate 71 to extend and synchronously drives 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 drives the push rod 81 to move. The movement of the push rod 81 drives the moving gear 83 to move synchronously. The moving gear 83 moves and thereby conflicts with the moving rack 85 to rotate. The moving gear 83 moves and rotates while driving the bidirectional rack 86 to move synchronously by twice the distance. When soil sampling is required, the pull rod is pulled to cause the baffle 72 to be disassembled synchronously, and then the sampling tube 51 is inserted along the positioning hole 77, so that the first transmission shaft 55 rubs against the side wall of the plant root, driving the second transmission shaft 57 to rotate, and the rotation of the second transmission shaft 57 drives the third transmission shaft 59 to rotate, and the rotation of the third transmission shaft 59 drives the folding section 54 close to the third transmission shaft 59 to open, so that the front end of the sampling tube 51 is bent, so that the sampling tube 51 can be sampled along the arc of the plant root. When it is necessary to sample the soil at the root, the sampling device only needs to be inserted into the sampling groove along the guide plate 14.

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

Claims

1. A biological culture observation experimental device for contaminated soil remediation, comprising a working box (1), a water tank (3) is arranged inside the working box (1), a recovery box (2) is arranged inside the working box (1), a water pump (17) is arranged on the top of the working box (1), a connecting pipe (16) is arranged on the top of the water tank (3) and is connected to the input end of the water pump (17), a telescopic pipe (9) is arranged on the top of the water pump (17), and a spray plate (10) is arranged at the end of the telescopic pipe (9), characterized in that: An observation box (11) is arranged on the top of the workbench, a sliding plate (15) is arranged on the bottom of the observation box (11), a thick rod (13) is fixedly arranged inside the observation box (11), a sampling slot is arranged in the middle of the thick rod (13), a guide plate (14) is fixedly arranged at one end of the sampling slot, a thin rod (12) is fixedly arranged on the top of the thick rod (13), two clamping and positioning mechanisms (6) are arranged on the thin rod (12), telescopic matching mechanisms (7) are arranged at the ends of the two clamping and positioning mechanisms (6), two arc-shaped sampling mechanisms (5) are plugged and arranged on the telescopic matching mechanisms (7), two double moving mechanisms (8) are arranged at the ends of the two clamping and positioning mechanisms (6), and the observation box (11) is arranged without a plate on the side facing the telescopic matching mechanism (7).

2. The biological cultivation observation experimental device for contaminated soil remediation according to claim 1 is characterized by: Each of the clamping and positioning mechanisms (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 rotatably arranged on the thin rod (12); the two rotating shafts (62) are respectively fixedly arranged at the ends of the two arc-shaped clamping jaws (61); the two U-shaped telescopic rods (63) are respectively rotatably arranged at the two ends of the two rotating shafts (62); and the telescopic blocks (64) are slidably arranged on the back of the corresponding U-shaped telescopic rods (63).

3. The biological cultivation observation experimental device for contaminated soil remediation according to claim 2 is characterized by: The distance between the clamping end of each clamping jaw and the thin rod (12) is twice the distance between the other end of the clamping jaw and the thin rod (12).

4. The biological cultivation observation experimental device for contaminated soil remediation according to claim 3 is characterized by: The telescopic matching mechanism (7) comprises two first telescopic plates (71), two baffles (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 respectively fixedly arranged on the side walls of the observation box (11); the two positioning plates are respectively 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, and the four positioning columns (74) are respectively fixedly connected to 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 respectively arranged on the two positioning plates; the plurality of positioning grooves (78) are respectively arranged inside the corresponding positioning holes (77); the two baffles (72) are respectively plugged on the corresponding positioning columns (74); and the two ends of the U-shaped pull rod (75) are fixedly arranged on the two baffles (72).

5. The biological cultivation observation experimental device for contaminated soil remediation according to claim 4 is characterized by: Each of the double moving mechanisms (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 on the side wall of the corresponding U-shaped telescopic rod (63); the U-shaped moving rod (82) is fixedly arranged on the end of the push rod (81); the two moving gears (83) are rotatably arranged on the two ends of the U-shaped moving rod (82); the hollow plate (84) is fixedly arranged on the fixed end of the telescopic block (64); the bidirectional rack (86) is slidably arranged inside the hollow plate (84); the fixed block (87) is fixedly arranged on the end of the bidirectional rack (86); and the two moving racks (85) are both fixedly arranged on the inner wall of the hollow plate (84).

6. The biological cultivation observation experimental device for contaminated soil remediation according to claim 5 is characterized by: The bidirectional rack (86) is respectively meshed with the two moving gears (83), and the two moving racks (85) are respectively meshed with the two moving gears (83).

7. The biological cultivation observation experimental device for contaminated soil remediation according to claim 1 is characterized by: The observation box (11) is made of organic glass, and a percolation layer is provided at the bottom of the observation box (11).

8. The biological cultivation observation experimental device for contaminated soil remediation according to claim 1 is characterized by: Each arc-shaped sampling mechanism (5) comprises a sampling tube (51), a slide groove (52), a plurality of connecting plates (53), a folding section (54), a first transmission shaft (55), two limit blocks (56), a second transmission shaft (57), two U-shaped mounting frames (58) and a third transmission shaft (59); the sampling tube (51) is inserted and arranged inside the positioning hole (77); the folding section (54) is arranged at the front end of the sampling tube (51); the two mounting frames are fixedly arranged inside the sampling tube (51); the first transmission shaft (55) is arranged on the outer side wall of the sampling tube (51); the second transmission shaft (57) is arranged on the outer side wall of the sampling tube (51); and the second transmission shaft (57) is arranged on the outer side wall of the sampling tube (51). ) is rotatably arranged between two U-shaped mounting frames (58), the third transmission shaft (59) is rotatably arranged between two sampling frames, a plurality of the 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 transmission-matched, the second transmission shaft (57) and the third transmission shaft (59) are transmission-matched, the third transmission shaft (59) and the inner side wall of the sampling tube (51) are frictionally matched, the slide groove (52) is arranged on the sampling tube (51), and the two limit blocks (56) are fixedly arranged at the end of the sampling tube (51).

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