Water source reservoir accurate sampling device for detecting nitrate

Abstract

The water source reservoir accurate sampling device comprises a sampling barrel and a control box, the sampling barrel is a rectangular barrel with openings in the top and the bottom, a control frame is installed in the sampling barrel in a sliding mode, triangular movable pieces are installed on the four bottom edges of the sampling barrel through torsion springs, and the control box is connected with the control frame in a sliding mode. The movable sheet is fixedly connected with the control frame through an adjusting rope; a first rotating wheel and a second rotating wheel are installed in the control box, a first pull rope and a second pull rope are wound on the first rotating wheel and the second rotating wheel respectively, and the first pull rope and the second pull rope are fixedly connected with the control frame and the sampling barrel respectively. The sampling barrel can be conveniently inserted into sludge through the unfolded movable piece, the movable piece is contracted through the control frame, the sludge is collected in the sampling barrel, the sampling barrel and the sludge are taken out through the second pull rope, the sampling barrel can be embedded into the sludge through the device, and deep sludge can be conveniently sampled.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy projects, in particular to a precise sampling device for water source reservoirs used for detecting nitrates. Background Art

[0002] Nitrates are widely present in nature as environmental pollutants, particularly in surface water and groundwater. Nitrate-containing waste gases from fertilizer application, sewage irrigation, garbage and feces, industrial nitrogen-containing waste, and fuel combustion are naturally leached and decomposed by precipitation to form nitrates, which then flow into rivers and lakes and seep into the ground, causing nitrate contamination of surface and groundwater. Nitrate testing in source reservoirs requires sampling the silt within the reservoirs. However, existing silt sampling devices are overly simple and can only collect surface silt, not deeper layers. Utility Model Content

[0003] In response to the shortcomings of the existing technology, the utility model provides a precise sampling device for water source reservoirs for detecting nitrates, so as to solve the problems that the existing sludge sampling device is too simple in structure and can only collect surface sludge but cannot sample deep sludge.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a precise sampling device for water source and reservoir for detecting nitrates, comprising a sampling tube and a control box, wherein the sampling tube is a rectangular tube with openings at the top and bottom, a control box is slidably mounted inside the sampling tube, and triangular movable pieces are mounted on the four bottom edges of the sampling tube via torsion springs, and the movable pieces are fixedly connected to the control box via an adjustment rope;

[0005] A first rotating wheel and a second rotating wheel are installed in the control box. A first pull rope and a second pull rope are respectively wound on the first rotating wheel and the second rotating wheel. The first pull rope and the second pull rope are respectively fixedly connected to the control frame and the sampling cylinder.

[0006] Preferably, a plurality of mounting grooves equidistantly arranged vertically are provided on the outer side of the sampling cylinder, and a limit frame is installed on the mounting grooves.

[0007] Preferably, the limiting frame is composed of two half frames, and the two half frames are fixedly connected by bolts. An upwardly inclined guide plate is provided on the edge of the limiting frame, and a plurality of through holes are opened on the limiting frame.

[0008] Preferably, a vertical guide bar is provided on the inner wall of the sampling cylinder, and a guide groove that slides with the guide bar is provided on the outer side of the control frame.

[0009] Preferably, there are four adjusting ropes, and the top ends of the adjusting ropes are fixedly connected to the bottom of the control frame, and the bottom ends of the adjusting ropes are fixedly connected to the movable sheet via a control ring.

[0010] Preferably, the first pull rope and the second pull rope are respectively extended vertically downward through steering wheels.

[0011] Preferably, a pull ring is installed at the bottom of the second pull rope, and the pull ring is fixedly connected to the top of the sampling tube through four thin ropes. The first pull rope passes through the pull ring and is divided into four branch ropes outward from the bottom. The four branch ropes are respectively fixedly connected to the top of the control frame.

[0012] Preferably, a stretching opening is provided at the bottom of the control box, and the first pull rope and the second pull rope extend from the stretching opening.

[0013] Preferably, two control motors are provided on one side of the control box, and output ends of the two control motors are fixedly connected to the first rotating wheel and the second rotating wheel respectively.

[0014] Preferably, the weight of the movable sheet is greater than the weight of the sampling tube.

[0015] The utility model provides a precise sampling device for water source reservoirs for detecting nitrates, which has the following beneficial effects:

[0016] 1. The utility model facilitates the insertion of the sampling tube into the silt by unfolding the movable sheet. The movable sheet is retracted by using the control frame to gather the silt into the sampling tube, and the sampling tube together with the silt is taken out by the second pull rope. By setting up this device, the sampling tube can be embedded in the silt, which is convenient for sampling deep silt.

[0017] 2. The utility model facilitates controlling the depth of the sampling tube inserted into the silt by setting a limit frame, making it convenient to sample silt at different depths and capable of being reused multiple times. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the movable piece of the utility model when it is closed;

[0019] Figure 2 This is a front view of the movable piece of the utility model when it is unfolded;

[0020] Figure 3 for Figure 1 Schematic diagram of the internal structure;

[0021] Figure 4 This is a schematic structural diagram of the control frame of the present utility model.

[0022] In the picture:

[0023] 1. Sampling tube; 101. Mounting slot; 2. Movable sheet; 3. Control frame; 301. Guide slot; 4. Adjustment rope; 5. Control ring; 6. Limit frame; 601. Guide plate; 602. Through hole; 7. Pull ring; 8. First pull rope; 9. Control box; 901. Stretching port; 10. Second pull rope; 11. Second rotating wheel; 12. First rotating wheel; 13. Guide strip; 14. Steering wheel; 15. Torsion spring; 16. Control motor.

[0024] The instruments in this utility model can be obtained through commercial purchase or private customization. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-4 The utility model provides a technical solution: a precise sampling device for water source and reservoir for detecting nitrate, comprising a sampling tube 1 and a control box 9. The sampling tube 1 is a rectangular tube with openings at the top and bottom. A control frame 3 is slidably installed in the sampling tube 1. The four bottom edges of the sampling tube 1 are all equipped with triangular movable pieces 2 through torsion springs 15. The movable pieces 2 are fixedly connected to the control frame 3 through an adjustment rope 4.

[0027] A first rotating wheel 12 and a second rotating wheel 11 are installed in the control box 9. The first pulling rope 8 and the second pulling rope 10 are respectively wound on the first rotating wheel 12 and the second rotating wheel 11. The first pulling rope 8 and the second pulling rope 10 are respectively fixedly connected to the control frame 3 and the sampling tube 1.

[0028] In this embodiment, the outer side of the sampling tube 1 is provided with a plurality of mounting grooves 101 arranged equidistantly from top to bottom, and a limit frame 6 is installed on the mounting grooves 101. The limit frame 6 is composed of two half frames, which are fixedly connected by bolts. The edge of the limit frame 6 is provided with an upwardly inclined guide plate 601, and the limit frame 6 is provided with a plurality of through holes 602. In specific use, the two half frames are fixed in the mounting grooves 101 by bolts, so that the two half frames form a complete limit frame 6. The provision of the limit frame 6 facilitates the control of the depth of the sampling tube 1 inserted into the silt, making it convenient to sample silt of different depths. The provision of through holes 602 can reduce the buoyancy of the water body on the limit frame 6, allowing the sampling tube 1 to be quickly inserted into the silt. At the same time, the guide plate 601 can stabilize the fall of the sampling tube 1, allowing the sampling tube 1 to be inserted into the silt as vertically as possible, making the insertion of the silt deeper.

[0029] In this embodiment, the inner wall of the sampling tube 1 is provided with a vertical guide bar 13, and the outer side of the control frame 3 is provided with a guide groove 301 that slidably cooperates with the guide bar 13. By providing the sliding cooperation between the guide bar 13 and the guide groove 301, the control frame 3 can be limited and guided, so that the control frame 3 can be raised and lowered vertically.

[0030] In this embodiment, there are four adjustment cords 4, the top ends of which are fixedly connected to the bottom of the control frame 3, while the bottom ends of the adjustment cords 4 are fixedly connected to the movable piece 2 via the control ring 5. In practice, when the control frame 3 rises, the adjustment cords 4, via the torsion springs 15, drive the movable piece 2 inward, until the movable piece 2 is completely retracted. The movable piece 2 then seals the bottom of the sampling barrel 1, facilitating storage of the sampled sludge within the sampling barrel 1.

[0031] In this embodiment, the first pull rope 8 and the second pull rope 10 are respectively extended vertically downward through the steering wheel 14.

[0032] In this embodiment, a pull ring 7 is mounted at the bottom of the second pull rope 10. The pull ring 7 is fixedly connected to the top of the sampling tube 1 via four thin ropes. The first pull rope 8 passes through the pull ring 7 and branches outward from the bottom into four branch ropes. Each of the four branch ropes is fixedly connected to the top of the control frame 3. During use, the second pull rope 10 pulls the thin rope upward through the pull ring 7, which lifts the sampling tube 1 upward. The four branch ropes are then pulled upward by the first pull rope 8, and the branch ropes are used to pull the control frame 3 upward, facilitating the raising and lowering of the control frame 3.

[0033] In this embodiment, a stretching opening 901 is opened at the bottom of the control box 9 , and the first pull rope 8 and the second pull rope 10 extend from the stretching opening 901 .

[0034] In this embodiment, two control motors 16 are provided on one side of the control box 9, and the output ends of the two control motors 16 are respectively fixedly connected to the first rotating wheel 12 and the second rotating wheel 11. By providing the control motors 16, the first rotating wheel 12 and the second rotating wheel 11 can be driven to rotate respectively.

[0035] In this embodiment, the weight of the movable piece 2 is greater than the weight of the sampling tube 1. In this arrangement, since the weight of the movable piece 2 is greater than the weight of the sampling tube 1, the sampling tube 1 can be vertically lowered, and the movable piece 2 can be inserted into the silt.

[0036] Working principle:

[0037] When in use, according to the depth requirement of the silt to be sampled, the two half frames are fixed in the corresponding mounting grooves 101 by bolts, so that the two half frames form a complete limit frame 6. By setting the limit frame 6, it is convenient to control the sampling tube 1 to be inserted into the silt of the corresponding depth, which is convenient for sampling silt of different depths. The elastic force of the torsion spring 15 is used to push the movable piece 2 outward so that the movable piece 2 opens vertically outward, and the sampling tube 1 is put into the reservoir. Since the weight of the movable piece 2 is greater than the weight of the sampling tube 1, the sampling tube 1 can be vertically lowered, and then the movable piece 2 is inserted into the silt until the limit frame 6 is stuck on the silt surface. , the control motor 16 drives the first rotating wheel 12 to rotate, and the first rotating wheel 12 pulls the four branch ropes upward through the first pull rope 8, and uses the branch ropes to pull the control frame 3 upward. When the control frame 3 rises, the adjusting rope 4 can drive the movable piece 2 to rotate inward through the torsion spring 15 until the movable piece 2 is completely retracted, and the bottom of the sampling cylinder 1 is sealed with the movable piece 2 to facilitate the storage of the sampled sludge in the sampling cylinder 1. The control motor 16 drives the second rotating wheel 11 to rotate, and the second rotating wheel 11 moves upward through the second pull rope 10, thereby lifting the sampling cylinder 1 out of the sludge, and then taking out the sludge sample.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precise sampling device for water source reservoirs for detecting nitrates, characterized by: The invention comprises a sampling cylinder (1) and a control box (9), wherein the sampling cylinder (1) is a rectangular cylinder with openings at the top and bottom, a control frame (3) is slidably mounted in the sampling cylinder (1), and the four bottom edges of the sampling cylinder (1) are all mounted with triangular movable pieces (2) via torsion springs (15), and the movable pieces (2) are fixedly connected to the control frame (3) via an adjustment rope (4); A first rotating wheel (12) and a second rotating wheel (11) are installed in the control box (9), and a first pull rope (8) and a second pull rope (10) are respectively wound on the first rotating wheel (12) and the second rotating wheel (11), and the first pull rope (8) and the second pull rope (10) are respectively fixedly connected to the control frame (3) and the sampling cylinder (1).

2. The precise sampling device for detecting nitrates in water sources and reservoirs according to claim 1, characterized in that: The outer side of the sampling tube (1) is provided with a plurality of mounting grooves (101) arranged equidistantly up and down, and a limit frame (6) is installed on the mounting grooves (101).

3. The precise sampling device for detecting nitrates in water sources and reservoirs according to claim 2, characterized in that: The limiting frame (6) is composed of two half frames, and the two half frames are fixedly connected by bolts. The edge of the limiting frame (6) is provided with an upwardly inclined guide plate (601), and the limiting frame (6) is provided with a plurality of through holes (602).

4. The precise sampling device for detecting nitrates in water sources and reservoirs according to claim 1, characterized in that: The inner wall of the sampling cylinder (1) is provided with a vertical guide bar (13), and the outer side of the control frame (3) is provided with a guide groove (301) that is slidably engaged with the guide bar (13).

5. The precise sampling device for water source and reservoir for detecting nitrate according to claim 1, characterized in that: There are four adjusting ropes (4), and the top ends of the adjusting ropes (4) are fixedly connected to the bottom of the control frame (3), and the bottom ends of the adjusting ropes (4) are fixedly connected to the movable sheet (2) via a control ring (5).

6. The precise sampling device for water source and reservoir for detecting nitrate according to claim 1, characterized in that: The first pull rope (8) and the second pull rope (10) are respectively directed vertically downwards through the steering wheel (14).

7. The precise sampling device for water source and reservoir for detecting nitrate according to claim 1, characterized in that: A pull ring (7) is installed at the bottom of the second pull rope (10), and the pull ring (7) is fixedly connected to the top of the sampling tube (1) through four thin ropes. The first pull rope (8) passes through the pull ring (7) and is divided into four branch ropes outward from the bottom. The four branch ropes are respectively fixedly connected to the top of the control frame (3).

8. The precise sampling device for water source and reservoir for detecting nitrate according to claim 1, characterized in that: A stretching opening (901) is provided at the bottom of the control box (9), and the first pull rope (8) and the second pull rope (10) extend from the stretching opening (901).

9. The precise sampling device for water source and reservoir for detecting nitrate according to claim 1, characterized in that: Two control motors (16) are provided on one side of the control box (9), and the output ends of the two control motors (16) are fixedly connected to the first rotating wheel (12) and the second rotating wheel (11), respectively.

10. The precise sampling device for water source and reservoir for detecting nitrate according to claim 1, characterized in that: The weight of the movable sheet (2) is greater than the weight of the sampling cylinder (1).

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