Sampling device for environmental toxicology detection and use method thereof

Abstract

The invention relates to the technical field of environment detection, and discloses a sampling device for environment toxicology detection and a using method thereof.The sampling device comprises a fixing frame, and a large water pipe is fixedly connected to the bottom of the fixing frame. An electric telescopic rod drives a first sliding rod to move through a first fixing plate, the first sliding rod drives a circular plate to move while moving, a first conical telescopic rod on the circular plate pushes a circular porous plate to slide on the first sliding rod, and under the action of the first conical telescopic rod, water is prevented from flowing back through holes of the circular porous plate; half of the interior of the large water pipe is in a vacuum state, so that water is sucked into the large water pipe through a water suction pipe, an electric telescopic rod moves back and forth, under the action of a limiting block, a circular porous plate is pushed and reset to the original position, the water is continuously pumped out, and due to the fact that the water suction pipe is different in length, the water at different depths is sucked; and the detection accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental detection equipment, in particular to a sampling device for environmental toxicology detection and a use method thereof. Background Art

[0002] As environmental issues have attracted much attention, accurately obtaining representative samples in environmental toxicology testing has become increasingly critical. Traditional sampling methods have limitations when faced with complex environmental media. For example, water and soil sampling is difficult to be accurate and comprehensive, and it is difficult to adapt to a variety of harsh environments. It is easy to cause sample bias and secondary pollution, and it lacks automation, continuity and remote monitoring functions in large-scale or long-term monitoring tasks.

[0003] Among them, when sampling a river, because the depth of the river is different, the components at different depths are also different. If a single sampling device is used, the sample taken is difficult to represent the sample standard of the river, resulting in large errors in subsequent testing. In response to the above problems, the following solutions are proposed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a sampling device for environmental toxicology detection, comprising a fixing frame, a large water pipe is fixedly connected to the bottom of the fixing frame, a water outlet pipe is connected to the water outlet of the large water pipe, four water suction pipes of different lengths are connected to the bottom of the large water pipe, a rectangular fixing plate is fixedly connected between the plurality of water suction pipes, and a water level block is fixedly connected to the right outer wall of the large water pipe;

[0005] The pumping mechanism includes an electric telescopic rod fixedly connected to the top of the fixed frame, a fixed plate 1 is fixedly connected to the left side of the electric telescopic rod, a circular plate is slidably connected to the inner wall of the large water pipe, a circular porous plate is slidably connected to the inner wall of the large water pipe, a sliding rod 1 is fixedly connected to the left side of the circular plate, the sliding rod 1 slides through the circular porous plate and the left outer wall of the large water pipe, the sliding rod 1 is fixedly connected to the fixed plate 1, and a side of the fixed plate 1 close to the circular porous plate is fixedly connected to a limiting block, and under the action of the limiting block, the circular porous plate is pushed and reset to its original position;

[0006] The cleaning mechanism includes a filter screen fixedly connected to the bottom of the water suction pipe, a T-shaped groove is provided on the bottom outer wall of the water suction pipe, a hexagonal bracket is rotatably connected to the inner wall of the T-shaped groove, a fan blade is fixedly connected to the outer wall of each edge of the hexagonal bracket, and a sliding cleaning component is fixedly connected to the bottom of the hexagonal bracket, and the impact force of the water flow on the fan blade drives the hexagonal bracket to rotate on the inner wall of the T-shaped groove. Because the hexagonal bracket is in contact with the filter screen, the surface of the filter screen is cleaned while the hexagonal bracket rotates to prevent the filter screen from being blocked and reducing the sampling efficiency.

[0007] Preferably, the pumping mechanism also includes a plurality of conical telescopic rods 1 fixedly connected to the left outer wall of the circular plate, the plurality of conical telescopic rods 1 correspond to the holes of the circular porous plate, and a spring 1 is sleeved on the outer wall of the plurality of conical telescopic rods 1.

[0008] Preferably, the pumping mechanism also includes a conical telescopic rod 2 fixedly connected to the middle axis of the right side of the circular porous plate, the conical telescopic rod 2 and the hole at the middle axis of the circular plate correspond to each other, a spring 2 is sleeved on the outer wall of the conical telescopic rod 2, and a blocking component is fixedly connected to the right side of the circular plate, the electric telescopic rod drives the sliding rod 1 to move through the fixed plate 1, and the sliding rod 1 drives the circular plate to move while moving, and the conical telescopic rod 1 on the circular plate pushes the circular porous plate to slide on the sliding rod 1, and under the action of the conical telescopic rod 1, water is prevented from flowing back through the holes of the circular porous plate, because half of the interior of the large water pipe is in a vacuum state, water is sucked into the interior of the large water pipe through the water suction pipe, and when the circular porous plate moves, water flows into the sealing tank through the water outlet pipe, and when the electric telescopic rod moves back and forth, under the action of the limit block, the circular porous plate is pushed and reset to its original position, thereby performing repeated movements, so that water is continuously pumped out, and because of the different lengths of the water suction pipes, water of different depths is sucked, thereby improving the accuracy of detection.

[0009] Preferably, the blocking component includes an arc-shaped slide groove opened at the bottom of the large water pipe, and a second slide bar is fixedly connected to the right outer wall of the circular plate, and the second slide bar slides through the right outer wall of the large water pipe.

[0010] Preferably, the blocking assembly further comprises a fixing block 1 fixedly connected to the outer wall of the second slide bar, and the right side of the second slide bar is fixedly connected with the fixing block 2.

[0011] Preferably, the blocking assembly also includes a fixed plate 2 which is slidably connected to the outer wall of the sliding rod 2, the fixed plate 2 being located between the fixed block 1 and the fixed block 2, and an arc plate is fixedly connected to the left side of the fixed plate 2, and the arc plate is slidably connected to the arc slide groove. When the circular plate moves, the sliding rod 2 is driven to move on the fixed plate 2 to move. When the fixed plate 2 contacts the fixed block 2, under the action of the fixed block 2, the fixed block 2 pushes the arc plate to slide in the arc slide groove through the fixed plate 2, so that the circular plate and the left side of the arc plate are misaligned. When the circular plate moves to the second water suction pipe, the arc plate will block the first water suction pipe, and so on, so that only one water suction pipe can be sucked when pumping water. When the circular plate moves back, the arc plate is driven to move under the action of the fixed block 1, thereby releasing the closure of each water suction pipe, so that water can be repeatedly pumped out, thereby improving the sampling efficiency and preventing only one water suction pipe from being extracted during sampling, which leads to a decrease in the accuracy of the detection result.

[0012] Preferably, the sliding cleaning assembly includes a bidirectional threaded rod fixedly connected to the central axis of the hexagonal bracket, the bidirectional threaded rod extends to the top of the water suction pipe, and a trapezoidal sliding groove is provided on the inner wall of the water suction pipe.

[0013] Preferably, the sliding cleaning assembly also includes a cleaning block arranged on the outer wall of the bidirectional threaded rod, the outer wall of the cleaning block is slidably connected to the water suction pipe and the trapezoidal slide groove, and a circular hole is opened on the inner wall of the cleaning block.

[0014] Preferably, the sliding cleaning assembly also includes a rotating shaft rotatably connected to the inner wall of the circular hole, and the side of the rotating shaft away from the circular hole is fixedly connected to the threaded block, and the threaded block is slidably connected to the thread on the bidirectional threaded rod. The hexagonal bracket drives the bidirectional threaded rod to rotate while rotating. When the bidirectional threaded rod rotates, the cleaning block moves on the groove on the bidirectional threaded rod through the threaded block on the rotating shaft connected to it, thereby driving the cleaning block to move in the trapezoidal slide groove, thereby cleaning the inner wall of the water suction pipe. When the threaded block moves to the top, it moves downward through the thread in the other direction, thereby cleaning the inner wall of the water suction pipe back and forth, preventing the mixing of different samples during the next sampling, resulting in a decrease in the detection result, thereby improving the accuracy of the detection.

[0015] A method for using a sampling device for environmental toxicology detection comprises the following steps:

[0016] S1: Place the device in water;

[0017] S2: Fixture;

[0018] S3: Start the device.

[0019] The present invention has the following beneficial effects:

[0020] 1. When the sampling device for environmental toxicology detection of the present invention is in use, there may be errors in sampling. The electric telescopic rod drives the sliding rod to move through the fixed plate, and the sliding rod drives the circular plate to move while moving. The conical telescopic rod on the circular plate pushes the circular porous plate to slide on the sliding rod. Under the action of the conical telescopic rod, water is prevented from flowing back through the holes of the circular porous plate. Because half of the interior of the large water pipe is in a vacuum state, water is sucked into the interior of the large water pipe through the water suction pipe. When the circular porous plate moves, the water flows into the sealed tank through the water outlet pipe. When the electric telescopic rod moves back and forth, under the action of the limit block, the circular porous plate is pushed and reset to its original position, thereby performing repeated movements to continuously extract water. Because of the different lengths of the water suction pipes, water of different depths is sucked, thereby improving the accuracy of detection.

[0021] 2. The present invention utilizes the force of the circular plate movement. When the circular plate moves, it drives the sliding rod 2 to move on the fixed plate 2. When the fixed plate 2 contacts the fixed block 2, under the action of the fixed block 2, the fixed block 2 pushes the arc plate to slide in the arc slide groove through the fixed plate 2, so that the circular plate and the left side of the arc plate are misaligned. When the circular plate moves to the second water suction pipe, the arc plate will block the first water suction pipe, and so on, so that when pumping water, only one water suction pipe can be sucked. When the circular plate moves back, the arc plate is driven to move under the action of the fixed block 1, thereby releasing the closure of each water suction pipe, and repeatedly pumping water out at one time, thereby improving the sampling efficiency and preventing only one water suction pipe from being pumped during sampling, resulting in a decrease in the accuracy of the detection result.

[0022] 3. The present invention utilizes the flow force of water. During the process of pumping water, some things in the water may clog the filter. The impact force of the water flow on the fan blades drives the hexagonal bracket to rotate on the inner wall of the T-shaped slide. Because the hexagonal bracket is in contact with the filter, the surface of the filter will be cleaned while the hexagonal bracket rotates, preventing the filter from being clogged and reducing the sampling efficiency.

[0023] 4. The present invention utilizes the rotation force of the hexagonal bracket. When the hexagonal bracket rotates, it drives the bidirectional threaded rod to rotate. When the bidirectional threaded rod rotates, the cleaning block moves on the grooves on the bidirectional threaded rod through the threaded block on the rotating shaft, thereby driving the cleaning block to move in the trapezoidal slide groove, thereby cleaning the inner wall of the water suction pipe. When the threaded block moves to the top, it moves downward through the other direction thread, thereby cleaning the inner wall of the water suction pipe back and forth, preventing the mixing of different samples during the next sampling, resulting in a decrease in the detection result, and improving the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a cross-sectional schematic diagram of the overall structure of the present invention;

[0027] Figure 3 It is a cross-sectional schematic diagram of the pumping mechanism of the present invention;

[0028] Figure 4 For the present invention Figure 3 A is an enlarged schematic diagram;

[0029] Figure 5 For the present invention Figure 3 A magnified schematic diagram of B;

[0030] Figure 6 It is a cross-sectional schematic diagram of the cleaning mechanism of the present invention;

[0031] Figure 7 For the present invention Figure 6 A magnified schematic diagram of middle C;

[0032] Figure 8 is a cross-sectional schematic diagram of a cleaning block of the present invention;

[0033] Fig. 9 It is a schematic diagram of the working process of the present invention.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] In the figure: 1. fixed frame; 11. large water pipe; 12. outlet pipe; 13. suction pipe; 14. rectangular fixed plate; 15. water level block; 2. pumping mechanism; 21. electric telescopic rod; 22. fixed plate 1; 23. circular plate; 24. circular porous plate; 25. slide bar 1; 26. limit block; 27. conical telescopic rod 1; 28. spring 1; 29. ​​conical telescopic rod 2; 210. spring 2; 3. cleaning Management mechanism; 31. Filter; 32. T-shaped slide; 33. Hexagonal bracket; 34. Fan blade; 4. Blocking assembly; 41. Arc slide; 42. Slide rod 2; 43. Fixed block 1; 44. Fixed block 2; 45. Fixed plate 2; 46. Arc plate; 5. Sliding cleaning assembly; 51. Bidirectional threaded rod; 52. Trapezoidal slide; 53. Cleaning block; 54. Circular hole; 55. Rotating shaft; 56. Threaded block. DETAILED DESCRIPTION

[0036] 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.

[0037] For example, see Figure 1 - Figure 4The present invention is a sampling device for environmental toxicology detection, comprising a fixing frame 1, a large water pipe 11 is fixedly connected to the bottom of the fixing frame 1, a water outlet pipe 12 is connected to the water outlet of the large water pipe 11, four water suction pipes 13 of different lengths are connected to the bottom of the large water pipe 11, a rectangular fixing plate 14 is fixedly connected between the plurality of water suction pipes 13, and a water level block 15 is fixedly connected to the right outer wall of the large water pipe 11;

[0038] The pumping mechanism 2 includes an electric telescopic rod 21 fixedly connected to the top of the fixed frame 1, a fixed plate 22 is fixedly connected to the left side of the electric telescopic rod 21, a circular plate 23 is slidably connected to the inner wall of the large water pipe 11, a circular porous plate 24 is slidably connected to the inner wall of the large water pipe 11, a sliding rod 25 is fixedly connected to the left side of the circular plate 23, the sliding rod 25 slides through the circular porous plate 24 and the left outer wall of the large water pipe 11, the sliding rod 25 is fixedly connected to the fixed plate 22, and a side of the fixed plate 22 close to the circular porous plate 24 is fixedly connected to a limiting block 26, under the action of the limiting block 26, the circular porous plate 24 is pushed and reset to its original position;

[0039] The cleaning mechanism 3 includes a filter screen 31 fixedly connected to the bottom of the water suction pipe 13, a T-shaped groove 32 is provided on the bottom outer wall of the water suction pipe 13, a hexagonal bracket 33 is rotatably connected to the inner wall of the T-shaped groove 32, a fan blade 34 is fixedly connected to the outer wall of each edge of the hexagonal bracket 33, and a sliding cleaning component 5 is fixedly connected to the bottom of the hexagonal bracket 33. The impact force of the water flow on the fan blade 34 drives the hexagonal bracket 33 to rotate on the inner wall of the T-shaped groove 32. Because the hexagonal bracket 33 is in contact with the filter screen 31, the surface of the filter screen 31 will be cleaned while the hexagonal bracket 33 rotates to prevent the filter screen 31 from being blocked and reducing the sampling efficiency.

[0040] The pumping mechanism 2 also includes a plurality of conical telescopic rods 27 fixedly connected to the left outer wall of the circular plate 23, the plurality of conical telescopic rods 27 correspond to the holes of the circular porous plate 24, and a spring 28 is sleeved on the outer wall of the plurality of conical telescopic rods 27.

[0041] The pumping mechanism 2 also includes a conical telescopic rod 29 fixedly connected to the central axis of the right side of the circular porous plate 24. The conical telescopic rod 29 corresponds to the hole at the central axis of the circular plate 23. A spring 210 is sleeved on the outer wall of the conical telescopic rod 29. A blocking component 4 is fixedly connected to the right side of the circular plate 23. The electric telescopic rod 21 drives the slide bar 25 to move through the fixed plate 22. The slide bar 25 drives the circular plate 23 to move while moving. The conical telescopic rod 27 on the circular plate 23 pushes the circular porous plate 24 to slide on the slide bar 25. Under the action of the conical telescopic rod 27, To prevent water from flowing back through the holes of the circular porous plate 24, half of the interior of the large water pipe 11 is in a vacuum state, so that water is sucked into the interior of the large water pipe 11 through the water suction pipe 13, and the water flows into the sealed tank through the water outlet pipe 12 while the circular porous plate 24 moves. When the electric telescopic rod 21 moves back and forth, the circular porous plate 24 is pushed and reset to its original position under the action of the limit block 26, thereby performing repeated movements to continuously pump out water. Due to the different lengths of the water suction pipe 13, water of different depths can be sucked, thereby improving the accuracy of detection.

[0042] For example 2, please refer to Figure 5 - Fig. 9 The present invention is a sampling device for environmental toxicology detection. Based on Example 1, the blocking component 4 includes an arc-shaped slide groove 41 opened at the bottom of the large water pipe 11, and a sliding rod 42 is fixedly connected to the right outer wall of the circular plate 23, and the sliding rod 42 slides through the right outer wall of the large water pipe 11.

[0043] The blocking assembly 4 further includes a fixing block 1 43 fixedly connected to the outer wall of the sliding rod 2 42 , and a fixing block 2 44 is fixedly connected to the right side of the sliding rod 2 42 .

[0044] The blocking assembly 4 also includes a fixed plate 2 45 slidably connected to the outer wall of the slide rod 2 42, the fixed plate 2 45 is located between the fixed block 1 43 and the fixed block 2 44, and an arc plate 46 is fixedly connected to the left side of the fixed plate 2 45, and the arc plate 46 is slidably connected to the arc chute 41. When the circular plate 23 moves, the slide rod 2 42 is driven to move on the fixed plate 2 45. When the fixed plate 2 45 contacts the fixed block 2 44, under the action of the fixed block 2 44, the fixed block 2 44 pushes the arc plate 46 to slide in the arc chute 41 through the fixed plate 2 45 , so that the circular plate 23 and the left side of the arc plate 46 are misaligned. When the circular plate 23 moves to the second water suction pipe 13, the arc plate 46 will block the first water suction pipe 13, and so on, so that when pumping water, only one water suction pipe 13 can be sucked. When the circular plate 23 moves back, the arc plate 46 is driven to move under the action of the fixed block 43, thereby releasing the blockage of each water suction pipe 13, so that water can be repeatedly pumped out, improving the sampling efficiency, and preventing only one water suction pipe 13 from being pumped during sampling, resulting in a decrease in the accuracy of the detection result.

[0045] The sliding cleaning assembly 5 includes a bidirectional threaded rod 51 fixedly connected to the central axis of the hexagonal bracket 33 . The bidirectional threaded rod 51 extends to the top of the water suction pipe 13 . A trapezoidal slide groove 52 is provided on the inner wall of the water suction pipe 13 .

[0046] The sliding cleaning assembly 5 also includes a cleaning block 53 arranged on the outer wall of the bidirectional threaded rod 51 . The outer wall of the cleaning block 53 is slidably connected to the water suction pipe 13 and the trapezoidal slide groove 52 . A circular hole 54 is opened on the inner wall of the cleaning block 53 .

[0047] The sliding cleaning assembly 5 also includes a rotating shaft 55 rotatably connected to the inner wall of the circular hole 54. The side of the rotating shaft 55 away from the circular hole 54 is fixedly connected to the threaded block 56. The threaded block 56 is slidably connected to the thread on the bidirectional threaded rod 51. The hexagonal bracket 33 rotates and drives the bidirectional threaded rod 51 to rotate. When the bidirectional threaded rod 51 rotates, the cleaning block 53 moves on the grooves on the bidirectional threaded rod 51 through the threaded block 56 on the rotating shaft 55, thereby driving the cleaning block 53 to move in the trapezoidal slide 52, so as to clean the inner wall of the water suction pipe 13. When the threaded block 56 moves to the top, it moves downward through the thread in the other direction, so as to clean the inner wall of the water suction pipe 13 back and forth, so as to prevent the mixing of different samples at the next sampling, resulting in a decrease in the detection result, thereby improving the accuracy of the detection.

[0048] The method for using the sampling device for environmental toxicology detection includes the following steps:

[0049] S1: Place the device in water;

[0050] S2: Fixture;

[0051] S3: Start the device.

[0052] A specific application of this embodiment is: when in use, the device is fixed in water through the fixing frame 1, so that the water level is maintained below the water level block 15, and water enters the large water pipe 11 through the water suction pipes 13 of different lengths, so that the water is maintained at half of the large water pipe 11, and the electric telescopic rod 21 is started, and the electric telescopic rod 21 drives the sliding rod 25 to move through the fixing plate 22, and the sliding rod 25 drives the circular plate 23 to move while moving, and the conical telescopic rod 27 on the circular plate 23 pushes the circular porous plate 24 to slide on the sliding rod 25, and under the action of the conical telescopic rod 27, water is prevented from passing through the large water pipe 11. Backflow occurs through the holes of the circular porous plate 24 because half of the inside of the large water pipe 11 is in a vacuum state, so that water is sucked into the large water pipe 11 through the water suction pipe 13, and the water flows into the sealed tank through the water outlet pipe 12 while the circular porous plate 24 moves. When the electric telescopic rod 21 moves back and forth, the circular porous plate 24 is pushed and reset to its original position under the action of the limit block 26, thereby performing repeated movements to continuously pump out water. Because of the different lengths of the water suction pipe 13, water of different depths is sucked, thereby improving the accuracy of detection.

[0053] When the circular plate 23 moves, the sliding rod 42 is driven to move on the fixed plate 45. When the fixed plate 45 contacts the fixed block 44, under the action of the fixed block 44, the fixed block 44 pushes the arc plate 46 to slide in the arc slot 41 through the fixed plate 45, so that the circular plate 23 and the left side of the arc plate 46 are misaligned. When the circular plate 23 moves to the second water suction pipe 13, the arc plate 46 will block the first water suction pipe 13, and so on, so that when pumping water, only one water suction pipe 13 can be sucked. When the circular plate 23 moves back, the arc plate 46 is driven to move under the action of the fixed block 43, thereby releasing the blockage of each water suction pipe 13, so that water can be repeatedly pumped out, thereby improving the sampling efficiency and preventing only one water suction pipe 13 from being extracted during sampling, resulting in a decrease in the accuracy of the detection result.

[0054] Because during the pumping process, some things in the water may block the filter 31, and the impact force of the water flow on the fan blades 34 drives the hexagonal bracket 33 to rotate on the inner wall of the T-shaped slide 32. Because the hexagonal bracket 33 is in contact with the filter 31, the surface of the filter 31 will be cleaned while the hexagonal bracket 33 rotates, preventing the filter 31 from being blocked and reducing the sampling efficiency.

[0055] When the hexagonal bracket 33 rotates, the bidirectional threaded rod 51 is driven to rotate. When the bidirectional threaded rod 51 rotates, the cleaning block 53 moves on the grooves on the bidirectional threaded rod 51 by rotating the threaded block 56 on the rotating shaft 55, thereby driving the cleaning block 53 to move in the trapezoidal slide 52, so as to clean the inner wall of the water suction pipe 13. When the threaded block 56 moves to the top, it moves downward through the other direction thread, so as to clean the inner wall of the water suction pipe 13 back and forth, so as to prevent the mixing of different samples at the next sampling, resulting in a decrease in the detection result, thereby improving the accuracy of the detection.

[0056] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sampling device for environmental toxicology detection, comprising a fixed frame (1), a large water pipe (11) is fixedly connected to the bottom of the fixed frame (1), a water outlet pipe (12) is connected to the water outlet of the large water pipe (11), four water suction pipes (13) of different lengths are connected to the bottom of the large water pipe (11), a rectangular fixing plate (14) is fixedly connected between a plurality of the water suction pipes (13), a water level block (15) is fixedly connected to the right outer wall of the large water pipe (11), characterized in that: Also includes: A water pumping mechanism (2), the water pumping mechanism (2) comprising an electric telescopic rod (21) fixedly connected to the top of a fixed frame (1), a fixed plate (22) fixedly connected to the left side of the electric telescopic rod (21), a circular plate (23) slidably connected to the inner wall of the large water pipe (11), a circular porous plate (24) slidably connected to the inner wall of the large water pipe (11), a sliding rod (25) fixedly connected to the left side of the circular plate (23), the sliding rod (25) slidably penetrates the circular porous plate (24) and the left outer wall of the large water pipe (11), the sliding rod (25) is fixedly connected to the fixed plate (22), and a limiting block (26) is fixedly connected to the side of the fixed plate (22) close to the circular porous plate (24); A cleaning mechanism (3), the cleaning mechanism (3) comprising a filter screen (31) fixedly connected to the bottom of a water suction pipe (13), a T-shaped slide groove (32) being provided on the outer wall of the bottom of the water suction pipe (13), a hexagonal bracket (33) being rotatably connected to the inner wall of the T-shaped slide groove (32), a fan blade (34) being fixedly connected to the outer wall of each edge of the hexagonal bracket (33), and a sliding cleaning component (5) being fixedly connected to the bottom of the hexagonal bracket (33).

2. The sampling device for environmental toxicology detection according to claim 1, characterized in that: The pumping mechanism (2) further comprises a plurality of conical telescopic rods (27) fixedly connected to the left outer wall of the circular plate (23), the plurality of conical telescopic rods (27) corresponding to the holes of the circular porous plate (24), and a spring (28) sleeved on the outer wall of the plurality of conical telescopic rods (27).

3. The sampling device for environmental toxicology detection according to claim 2, characterized in that: The pumping mechanism (2) further comprises a second conical telescopic rod (29) fixedly connected to the central axis of the right side of the circular porous plate (24), the second conical telescopic rod (29) corresponding to the hole at the central axis of the circular plate (23), a second spring (210) being sleeved on the outer wall of the second conical telescopic rod (29), and a blocking assembly (4) being fixedly connected to the right side of the circular plate (23).

4. The sampling device for environmental toxicology detection according to claim 3, characterized in that: The blocking component (4) comprises an arc-shaped slide groove (41) provided at the bottom of the large water pipe (11), and a second slide rod (42) is fixedly connected to the right outer wall of the circular plate (23), and the second slide rod (42) slides through the right outer wall of the large water pipe (11).

5. The sampling device for environmental toxicology detection according to claim 4, characterized in that: The blocking assembly (4) further comprises a fixing block 1 (43) fixedly connected to the outer wall of the second slide bar (42), and a fixing block 2 (44) is fixedly connected to the right side of the second slide bar (42).

6. The sampling device for environmental toxicology detection according to claim 5, characterized in that: The blocking assembly (4) further comprises a second fixing plate (45) slidably connected to the outer wall of the second sliding rod (42), the second fixing plate (45) being located between the first fixing block (43) and the second fixing block (44), the left side of the second fixing plate (45) being fixedly connected with an arc plate (46), the arc plate (46) being slidably connected to the arc sliding groove (41).

7. The sampling device for environmental toxicology detection according to claim 6, characterized in that: The sliding cleaning assembly (5) comprises a bidirectional threaded rod (51) fixedly connected to the central axis of the hexagonal bracket (33), the bidirectional threaded rod (51) extending to the top of the water suction pipe (13), and a trapezoidal sliding groove (52) is provided on the inner wall of the water suction pipe (13).

8. The sampling device for environmental toxicology detection according to claim 7, characterized in that: The sliding cleaning assembly (5) further comprises a cleaning block (53) arranged on the outer wall of the bidirectional threaded rod (51); the outer wall of the cleaning block (53) is slidably connected to the water suction pipe (13) and the trapezoidal slide groove (52); and a circular hole (54) is formed on the inner wall of the cleaning block (53).

9. The sampling device for environmental toxicology detection according to claim 8, characterized in that: The sliding cleaning assembly (5) further comprises a rotating shaft (55) rotatably connected to the inner wall of the circular hole (54); a side of the rotating shaft (55) away from the circular hole (54) is fixedly connected to a threaded block (56); and the threaded block (56) is slidably connected to the threads on the bidirectional threaded rod (51).

10. A method for using a sampling device for environmental toxicology detection, using the sampling device for environmental toxicology detection as claimed in claim 9, characterized in that: The steps include: S1: Place the device in water; S2: Fixture; S3: Start the device.

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