Layered sampling device for water pollution detection

Abstract

The invention relates to the technical field of water pollution detection sampling, and particularly discloses a stratified sampling device for water pollution detection. Comprising a circular sleeve plate, a first internally-opened sliding groove is formed in the inner wall of the circular sleeve plate, a seepage circular hole is formed in the inner wall of the first internally-opened sliding groove, the inner wall of the first internally-opened sliding groove is slidably connected with an arc-shaped sliding plate, one side of the arc-shaped sliding plate penetrates through and is slidably connected with a limiting penetrating rod, and one end of the limiting penetrating rod is slidably connected with the inner wall of the first internally-opened sliding groove; according to the stratified sampling device for water pollution detection, a plurality of seepage round holes with smaller aperture are formed in the outer side of the round sleeve plate, so that liquid can conveniently pass through the seepage round holes, clods are blocked, and the situation that the clods with larger volume in water are collected together and are difficult to treat and the detection effect is influenced when a water source is sampled is prevented; an arc-shaped sliding plate is arranged in a first internally-opened sliding groove to partition the first internally-opened sliding groove, and the situation that collected liquid enters a vertical round pipe through a ventilation round hole and is mixed with liquid collected at other heights, and the layered detection effect is affected is prevented.

Description

Technical Field

[0001] This invention relates to the field of water pollution detection and sampling technology, specifically to a stratified sampling device for water pollution detection. Background Technology

[0002] In water quality purification testing, color and turbidity are relatively obvious observation indicators. Most people can detect water color when it is greater than 15 degrees, and feel disgusted when it is greater than 30 degrees. Turbidity is an expression of the optical properties of water samples, used to indicate the degree of clarity and turbidity of water. It is one of the most important indicators for measuring the quality of water, and also an important basis for assessing the purification efficiency of water treatment equipment and evaluating the status of water treatment technology. A decrease in turbidity means a reduction in the content of organic matter, bacteria, viruses and other microorganisms in the water. This not only improves the disinfection and sterilization effect, but also helps to reduce the amount of halogenated organic matter generated. In order to test water quality, sampling is required. The core of water pollution sampling is to follow the principles of "representativeness, standardization and safety" and collect samples that can truly reflect the pollution status of the water body to provide a reliable basis for subsequent testing and analysis. When collecting samples from water bodies, it is necessary to fully extract the composition of various substances in the water source. However, large mud clumps often exist in water bodies, which not only affect the effectiveness of the sampling device but also the detection results of local water areas. Therefore, we propose a stratified sampling device for water pollution detection. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a stratified sampling device for water pollution detection, including a vertical circular tube, a vent hole on the outer side of the vertical circular tube, a liquid storage mechanism connected to the outer side of the vertical circular tube, an internal threaded rod threadedly connected to the inner wall of the vertical circular tube, a cross rotating rod fixedly connected to the top of the internal threaded rod, an auxiliary sludge cleaning mechanism fixedly connected to all four sides of the cross rotating rod, and a flow aid mechanism rotatably connected to the top of the liquid storage mechanism through a rotating bolt. The liquid storage mechanism includes a circular sleeve plate. The inner wall of the circular sleeve plate has an inner sliding groove, and the inner wall of the inner sliding groove has a seepage hole. By opening multiple seepage holes with smaller diameters on the outer side of the circular sleeve plate, it is easy for liquid to pass through and block mud. The ventilation holes are provided in multiple ways, and the multiple ventilation holes are distributed on the outside of the vertical tube. The liquid storage mechanism is provided in multiple ways, and the multiple liquid storage mechanism is distributed on the outside of the vertical tube at a position aligned with the ventilation holes. The circular sleeve is fitted onto the vertical circular tube and fixedly connected to the vertical circular tube. Multiple inner opening sliding grooves are provided, and the multiple inner opening sliding grooves are distributed on the inner side of the circular sleeve and aligned with the ventilation holes. Multiple seepage holes are provided, and the multiple seepage holes are distributed on the outer side of the circular sleeve. The inner wall of the inner opening slide groove is slidably connected to an arc-shaped slide plate. The inner opening slide groove is divided into sections by setting the arc-shaped slide plate in the inner opening slide groove. One side of the arc-shaped slide plate is connected to a limiting rod through and slidably. The arc-shaped slide plate is limited by setting the limiting rod in the inner opening slide groove. One end of the limiting rod is slidably connected to the inner wall of the inner opening groove, and the other end of the limiting rod is fixedly connected to the outer side of the vertical round tube.

[0004] Furthermore, the auxiliary sludge cleaning mechanism includes an arc-shaped connecting rod, with a trapezoidal arc block fixedly connected to the bottom of the arc-shaped connecting rod. When the trapezoidal arc block rotates with the cross-shaped rotating rod, it scrapes and cleans the outer surface of the circular sleeve plate. The cross-shaped rotating rod drives the trapezoidal arc block to rotate to the position where the seepage hole is opened on the outer surface of the circular sleeve plate to seal it. Hard arc brushes are fixedly connected to both sides of the trapezoidal arc block. When the trapezoidal arc block rotates, the hard arc brushes on both sides of the trapezoidal arc block clean the inside of the seepage hole. The end of the arc-shaped connecting rod away from the trapezoidal arc block is fixedly connected to one end of the cross-shaped rotating rod. Multiple trapezoidal arc blocks are provided, and the multiple trapezoidal arc blocks are distributed at the bottom of the arc-shaped connecting rod and connected by a connecting rod.

[0005] Furthermore, the flow-aiding mechanism includes a top rotating rod. A reinforcing sleeve is fitted on the outer side of the top rotating rod and rotatably connected to it via a bearing. A large rounded corner plate is fixedly connected to the outer side of the top rotating rod. When the arc-shaped connecting rod rotates with the cross rotating rod, it contacts the large rounded corner plate and pushes the large rounded corner plate to drive the top rotating rod to rotate. When the large rounded corner plate rotates, it drives the small rounded corner plate in the inner opening groove two to rotate together. When the large rounded corner plate and the small rounded corner plate rotate with the top rotating rod, they push the water flow around the seepage hole. An inner opening groove two is opened on the side of the large rounded corner plate away from the top rotating rod. A small rounded corner plate is slidably connected to the inner wall of the inner opening groove two. An extension spring in the inner opening groove two pushes the small rounded corner plate to slide outward from the inner opening groove two. The small rounded corner plate extends the coverage area of ​​the large rounded corner plate by sliding outward from the inner opening groove two through the push of the extension spring. An inner opening circular groove is opened on one side of the small rounded corner plate. An extension spring is fixedly connected to the inner wall of the inner opening circular groove two. A corrugated plastic strip is fixedly connected to the outer side of the small rounded corner plate. When the small rounded corner plate rotates with the top rotating rod, it drives the corrugated plastic strip to rotate together. When the corrugated plastic strip rotates with the top rotating rod, it drives away the organisms in the surrounding water. Side opening grooves are opened on both sides of the small rounded corner plate. The inner wall of the side opening groove is slidably connected to the built-in locking block. The small rounded corner plate slides outward into the second inward opening groove until the built-in locking block contacts the inner wall of the side opening groove and stops. The extension distance of the small rounded corner plate is limited by the built-in locking block in the second inward opening groove. The bottom of the top rotating rod is rotatably connected to the top of the circular sleeve plate by a rotating bolt. The bottom of the reinforcing sleeve block is fixedly connected to the top of the circular sleeve plate. Multiple large rounded corner plates are provided, and the multiple large rounded corner plates are distributed on the outer side of the top rotating rod. The end of the extension spring away from the small rounded corner plate is fixedly connected to the inner wall of the second inward opening groove. One side of the built-in locking block is fixedly connected to the inner wall of the second inward opening groove.

[0006] This invention provides a stratified sampling device for water pollution detection. It has the following advantages: 1. This stratified sampling device for water pollution detection uses multiple small-diameter perforations on the outer side of a circular sleeve to facilitate liquid passage and block mud, preventing large mud lumps from being collected during water sampling, which would be difficult to handle and affect the detection results. The trapezoidal arc block scrapes and cleans the outer surface of the circular sleeve as the cross-shaped rotating rod rotates, preventing the perforations on the outer surface of the circular sleeve from being blocked by silt and affecting the sampling operation.

[0007] 2. This stratified sampling device for water pollution detection is equipped with a liquid storage mechanism. Multiple small-diameter perforations are opened on the outside of the circular sleeve to facilitate liquid passage and block mud lumps. This prevents large mud lumps in the water from being collected together during water sampling, which would be difficult to process and affect the detection results. An arc-shaped sliding plate is set in the inner sliding groove to divide the inner sliding groove into sections, preventing the collected liquid from entering the vertical circular pipe through the vent holes and mixing with liquid collected at other heights, thus affecting the stratified detection results. A limiting rod is set in the inner sliding groove to limit the arc-shaped sliding plate through, preventing the arc-shaped sliding plate from tilting due to uneven suction when sliding in the inner sliding groove, which would cause the liquid to pass over the arc-shaped sliding plate and enter the vertical circular pipe.

[0008] 3. This stratified sampling device for water pollution detection is equipped with an auxiliary sludge removal mechanism. As the trapezoidal arc block rotates with the cross-shaped rotating rod, it scrapes and cleans the outer surface of the circular sleeve plate, preventing the location of the seepage holes on the outer surface of the circular sleeve plate from being blocked by silt and affecting the sampling operation. The hard arc brushes on both sides of the trapezoidal arc block clean the inside of the seepage holes as the trapezoidal arc block rotates, preventing some silt from being blocked inside the seepage holes due to suction, making it difficult to clean the trapezoidal arc block. The cross-shaped rotating rod drives the trapezoidal arc block to rotate to the location of the seepage holes on the outer surface of the circular sleeve plate through the arc-shaped connecting rod to seal them, preventing the liquid sampled in the inner sliding groove from continuously leaking out when the vertical circular tube is removed from the water area, thus affecting the subsequent detection results.

[0009] 4. This stratified sampling device for water pollution detection is equipped with a flow-aiding mechanism. As the top rotating rod rotates, the large and small rounded corner plates push the water flow around the seepage holes, preventing the static water flow collected by the seepage holes from accurately reflecting the overall pollution effect of the water area. The small rounded corner plate slides outward through the extension spring to extend the coverage area of ​​the large rounded corner plate, preventing the small coverage area of ​​the large rounded corner plate from affecting the detection effect due to a small range of water flow. An internal locking block within the inner sliding groove limits the extension distance of the small rounded corner plate, preventing it from sliding out and allowing debris in the water to enter and become difficult to handle. The corrugated plastic strip, as it rotates with the top rotating rod, drives away organisms in the surrounding water area, preventing excessive biological activity around the seepage holes from affecting the sampling effect. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the layered sampling device of the present invention; Figure 2 This is a side cross-sectional view of the layered sampling device of the present invention; Figure 3 This is a schematic diagram of the liquid storage mechanism of the present invention; Figure 4 This is a side sectional view of the liquid storage mechanism of the present invention; Figure 5 This is a schematic diagram of the auxiliary mud-cleaning mechanism of the present invention; Figure 6 This is a schematic diagram of the bottom structure of the auxiliary sludge cleaning mechanism of the present invention; Figure 7 This is a schematic diagram of the flow-aiding mechanism of the present invention; Figure 8 This is a partial side-section diagram of the flow-aiding mechanism of the present invention.

[0011] In the diagram: 1. Vertical circular tube; 2. Ventilation hole; 3. Liquid storage mechanism; 4. Internal threaded rod; 5. Cross rotating rod; 6. Auxiliary sludge cleaning mechanism; 7. Flow aid mechanism; 301. Circular sleeve plate; 302. Inner opening slide groove one; 303. Leakage hole; 304. Arc-shaped sliding plate; 305. Limiting rod; 601. Arc-shaped connecting rod; 602. Trapezoidal arc block; 603. Hard arc brush; 701. Top rotating rod; 702. Reinforcing sleeve block; 703. Large rounded corner plate; 704. Inner opening slide groove two; 705. Small rounded corner plate; 706. Inner opening circular groove; 707. Extension spring; 708. Wave-shaped plastic strip; 709. Side opening slide groove; 710. Internal locking block. Detailed Implementation

[0012] 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.

[0013] Please see Figures 1-4 The present invention provides a stratified sampling device for water pollution detection, including a vertical circular tube 1, a ventilation hole 2 on the outer side of the vertical circular tube 1, a liquid storage mechanism 3 connected to the outer side of the vertical circular tube 1, an internal threaded rod 4 threadedly connected to the inner wall of the vertical circular tube 1, a cross rotating rod 5 fixedly connected to the top of the internal threaded rod 4, an auxiliary mud cleaning mechanism 6 fixedly connected to all four sides of the cross rotating rod 5, and a flow aid mechanism 7 rotatably connected to the top of the liquid storage mechanism 3 through a rotating bolt. The liquid storage mechanism 3 includes a circular sleeve plate 301, the inner wall of the circular sleeve plate 301 is provided with an inner sliding groove 302, and the inner wall of the inner sliding groove 302 is provided with a seepage hole 303. Multiple ventilation holes 2 are provided, and the multiple ventilation holes 2 are distributed on the outside of the vertical tube 1. Multiple liquid storage mechanisms 3 are provided, and the multiple liquid storage mechanisms 3 are distributed on the outside of the vertical tube 1 at positions aligned with the ventilation holes 2. A circular sleeve plate 301 is sleeved on the vertical circular tube 1 and fixedly connected to the vertical circular tube 1. Multiple inner opening sliding grooves 302 are provided, and the multiple inner opening sliding grooves 302 are distributed on the inner side of the circular sleeve plate 301 and aligned with the ventilation hole 2. Multiple seepage holes 303 are provided, and the multiple seepage holes 303 are distributed on the outer side of the circular sleeve plate 301. An arc-shaped sliding plate 304 is slidably connected to the inner wall of the inner opening slide groove 302, and a limit rod 305 is slidably connected through one side of the arc-shaped sliding plate 304. One end of the limiting rod 305 is slidably connected to the inner wall of the inner opening groove 302, and the other end of the limiting rod 305 is fixedly connected to the outer side of the vertical circular tube 1. In use, the part of the vertical circular tube 1 below the built-in threaded rod 4 is placed into the water area to be sampled. The cross rod 5 is rotated to drive the built-in threaded rod 4 to rotate and engage with the inner wall of the vertical circular tube 1, so that the built-in threaded rod 4 moves upward to suck up the inside of the vertical circular tube 1. When the inside of the vertical circular tube 1 is sucked up, the liquid storage mechanism 3 draws the nearby water into the inside for storage. Multiple liquid storage mechanisms 3 are set at different heights on the vertical circular tube 1 to perform stratified sampling of the water. At the same time, the rotation of the cross rod 5 drives the auxiliary cleaning mechanism to clean the outer surface of the liquid storage mechanism 3. When enough water is collected in the liquid storage mechanism 3, the cross rod 5 drives the auxiliary mud cleaning mechanism 6 to rotate to the position of sealing the liquid storage mechanism 3, and the water in the vertical circular tube 1 is removed. Then, the water collected in the liquid storage mechanism 3 can be discharged by reversing the internal threaded rod 4 through the cross rod 5, so that it can be aligned for testing. When the built-in threaded rod 4 rotates upward, it sucks the vertical circular tube 1, causing the arc-shaped slide plate 304 in the inner opening slide groove 302 to move towards the ventilation hole 2 under the influence of suction. When the arc-shaped slide plate 304 moves towards the ventilation hole 2, it draws the external liquid into the inner opening slide groove 302 for storage through the seepage hole 303. Multiple seepage holes 303 with smaller diameters are opened on the outside of the circular sleeve plate 301 to facilitate the passage of liquid and block mud. The inner opening slide groove 302 is divided into sections by setting the arc-shaped slide plate 304 in the inner opening slide groove 302. The arc-shaped slide plate 304 is limited by setting the limiting rod 305 in the inner opening slide groove 302. When the arc-shaped slide plate 304 moves to the inner side and contacts the outer surface of the vertical circular tube 1, it stops collecting liquid. At this time, the auxiliary mud cleaning mechanism 6 rotates to the position of the seepage hole 303 on the outside of the circular sleeve plate 301 to block it.

[0014] Please see Figures 5-8The present invention provides a stratified sampling device for water pollution detection: the auxiliary sludge cleaning mechanism 6 includes an arc-shaped connecting rod 601, a trapezoidal arc block 602 is fixedly connected to the bottom of the arc-shaped connecting rod 601, and a hard arc brush 603 is fixedly connected to both sides of the trapezoidal arc block 602. The end of the arc-shaped connecting rod 601 away from the trapezoidal arc block 602 is fixedly connected to one end of the cross rotating rod 5. Multiple trapezoidal arc blocks 602 are provided, and the multiple trapezoidal arc blocks 602 are distributed at the bottom of the arc-shaped connecting rod 601 and connected by a connecting rod. The flow-aiding mechanism 7 includes a top rotating rod 701. A reinforcing sleeve 702 is sleeved on the outer side of the top rotating rod 701 and rotatably connected via bearings. A large rounded corner plate 703 is fixedly connected to the outer side of the top rotating rod 701. An inner-opening sliding groove 704 is formed on the side of the large rounded corner plate 703 away from the top rotating rod 701. A small rounded corner plate 705 is slidably connected to the inner wall of the inner-opening sliding groove 704. An inner-opening circular groove 706 is formed on one side of the small rounded corner plate 705. A tension spring 707 is fixedly connected to the inner wall of the inner-opening circular groove 706. A corrugated plastic strip 708 is fixedly connected to the outer side of the small rounded corner plate 705. Both sides of 05 are provided with side-opening sliding grooves 709. The inner wall of the side-opening sliding groove 709 is slidably connected with an internal locking block 710. The bottom of the top rotating rod 701 is rotatably connected to the top of the circular sleeve plate 301 through a rotating bolt. The bottom of the reinforcing sleeve block 702 is fixedly connected to the top of the circular sleeve plate 301. Multiple large rounded corner plates 703 are provided, and multiple large rounded corner plates 703 are distributed on the outside of the top rotating rod 701. The end of the extension spring 707 away from the small rounded corner plate 705 is fixedly connected to the inner wall of the inner opening sliding groove 704. One side of the internal locking block 710 is fixedly connected to the inner wall of the inner opening sliding groove 704. When in use, the built-in threaded rod 4 rotates upward to sample the water area. The cross rod 5 drives the arc connecting rod 601 and the trapezoidal arc block 602 to rotate together. As the trapezoidal arc block 602 rotates with the cross rod 5, it scrapes and cleans the outer surface of the circular sleeve plate 301. The hard arc brushes 603 on both sides of the trapezoidal arc block 602 clean the inside of the seepage hole 303 as the trapezoidal arc block 602 rotates. When the inner sliding groove 302 is full of liquid, the cross rod 5 drives the trapezoidal arc block 602 to rotate to the position of the seepage hole 303 on the outer surface of the circular sleeve plate 301 through the arc connecting rod 601 to seal it. When the arc-shaped connecting rod 601 rotates with the cross-shaped rotating rod 5, it contacts the large rounded corner plate 703 and pushes the large rounded corner plate 703 to drive the top rotating rod 701 to rotate. When the large rounded corner plate 703 rotates, it drives the small rounded corner plate 705 in the inner opening groove 2 704 to rotate together. When the large rounded corner plate 703 and the small rounded corner plate 705 rotate with the top rotating rod 701, they push the water flow around the seepage hole 303. At the same time, the extension spring 707 in the inner opening groove 2 704 pushes the small rounded corner plate 705 to rotate. The rounded corner plate 705 slides outward through the inward sliding groove 704. The small rounded corner plate 705 slides outward through the inward sliding groove 704 by the push of the extension spring 707 to extend the coverage area of ​​the large rounded corner plate 703. The small rounded corner plate 705 slides outward through the inward sliding groove 704 until it stops when the built-in locking block 710 abuts against the inner wall of the side sliding groove 709. The extension distance of the small rounded corner plate 705 is limited by setting the built-in locking block 710 in the inward sliding groove 704. When the small rounded corner plate 705 rotates with the top rotating rod 701, it drives the outer corrugated plastic strip 708 to rotate together. When the corrugated plastic strip 708 rotates with the top rotating rod 701, it drives away the organisms in the surrounding water. When the small rounded corner plate 705 rotates with the top rotating rod 701 and comes into contact with the vertical round tube 1, it is pushed back into the inward sliding groove 704. After the large rounded corner plate 703 passes over the vertical round tube 1, the small rounded corner plate 705 slides again outward from the inward sliding groove 704 due to the stretching force of the extension spring 707.

[0015] In operation, the portion of the vertical circular tube 1 below the internal threaded rod 4 is placed into the water area to be sampled. Rotating the cross-shaped rod 5 causes the internal threaded rod 4 to rotate and engage with the inner wall of the vertical circular tube 1, causing the internal threaded rod 4 to move upward and suck up the inside of the vertical circular tube 1. When the inside of the vertical circular tube 1 is sucked up, the liquid storage mechanism 3 draws nearby water into the tube for storage. By setting multiple liquid storage mechanisms 3 at different heights on the vertical circular tube 1, the water area can be sampled in layers. At the same time, the rotation of the cross-shaped rod 5 drives the auxiliary cleaning mechanism to rotate and clean the outer surface of the liquid storage mechanism 3. When enough water has been collected in the liquid storage mechanism 3, the cross-shaped rod 5 drives the auxiliary mud cleaning mechanism 6 to rotate to the position of sealing the liquid storage mechanism 3. The vertical circular tube 1 is then removed from the water area. Then, the internal threaded rod 4 is reversed by the cross-shaped rod 5 to discharge the water collected in the liquid storage mechanism 3 for alignment and testing. When the built-in threaded rod 4 rotates upward, it sucks the vertical round tube 1, causing the arc-shaped slide plate 304 in the inner opening slide groove 302 to move towards the ventilation hole 2 under the influence of suction. When the arc-shaped slide plate 304 moves towards the ventilation hole 2, it draws the external liquid into the inner opening slide groove 302 for storage through the seepage hole 303. Multiple seepage holes 303 with smaller diameters are opened on the outside of the circular sleeve plate 301 to facilitate the passage of liquid and block mud. The inner opening slide groove 302 is divided into sections by setting the arc-shaped slide plate 304 in the inner opening slide groove 302. The arc-shaped slide plate 304 is limited by setting the limiting rod 305 in the inner opening slide groove 302. When the arc-shaped slide plate 304 moves to the inner side and contacts the outer surface of the vertical round tube 1, it stops collecting liquid. At this time, the auxiliary mud cleaning mechanism 6 rotates to the position of the seepage hole 303 on the outside of the circular sleeve plate 301 to block it. When the built-in threaded rod 4 rotates upward to sample the water area, the cross rod 5 drives the arc connecting rod 601 and the trapezoidal arc block 602 to rotate together. As the trapezoidal arc block 602 rotates with the cross rod 5, it scrapes and cleans the outer surface of the circular sleeve plate 301. The hard arc brushes 603 on both sides of the trapezoidal arc block 602 clean the inside of the seepage hole 303 as the trapezoidal arc block 602 rotates. When the inner sliding groove 302 is full of liquid, the cross rod 5 drives the trapezoidal arc block 602 to rotate to the position where the seepage hole 303 is opened on the outer surface of the circular sleeve plate 301 through the arc connecting rod 601 to seal it. When the arc-shaped connecting rod 601 rotates with the cross-shaped rotating rod 5, it contacts the large rounded corner plate 703 and pushes the large rounded corner plate 703 to drive the top rotating rod 701 to rotate. When the large rounded corner plate 703 rotates, it drives the small rounded corner plate 705 in the inner opening groove 2 704 to rotate together. When the large rounded corner plate 703 and the small rounded corner plate 705 rotate with the top rotating rod 701, they push the water flow around the seepage hole 303. At the same time, the extension spring 707 in the inner opening groove 2 704 pushes the small rounded corner plate 705 to rotate. The rounded corner plate 705 slides outward through the inward sliding groove 704. The small rounded corner plate 705 slides outward through the inward sliding groove 704 by the push of the extension spring 707 to extend the coverage area of ​​the large rounded corner plate 703. The small rounded corner plate 705 slides outward through the inward sliding groove 704 until it stops when the built-in locking block 710 abuts against the inner wall of the side sliding groove 709. The extension distance of the small rounded corner plate 705 is limited by setting the built-in locking block 710 in the inward sliding groove 704. When the small rounded corner plate 705 rotates with the top rotating rod 701, it drives the outer corrugated plastic strip 708 to rotate together. When the corrugated plastic strip 708 rotates with the top rotating rod 701, it drives away the organisms in the surrounding water. When the small rounded corner plate 705 rotates with the top rotating rod 701 and comes into contact with the vertical round tube 1, it is pushed back into the inward sliding groove 704. After the large rounded corner plate 703 passes over the vertical round tube 1, the small rounded corner plate 705 slides again outward from the inward sliding groove 704 due to the stretching force of the extension spring 707.

[0016] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A stratified sampling device for water pollution detection, comprising a vertical circular tube (1), characterized in that: The vertical circular tube (1) has a ventilation hole (2) on its outer side. The outer side of the vertical circular tube (1) is connected to a liquid storage mechanism (3). The inner wall of the vertical circular tube (1) is threaded with an internal threaded rod (4). The top of the internal threaded rod (4) is fixedly connected to a cross rotating rod (5). The four sides of the cross rotating rod (5) are fixedly connected to an auxiliary mud cleaning mechanism (6). The top of the liquid storage mechanism (3) is rotatably connected to a flow aid mechanism (7) through a rotating bolt. The liquid storage mechanism (3) includes a circular sleeve plate (301), the inner wall of which is provided with an inner opening groove (302), and the inner wall of the inner opening groove (302) is provided with a seepage hole (303).

2. The stratified sampling device for water pollution detection according to claim 1, characterized in that: Multiple ventilation holes (2) are provided, and the multiple ventilation holes (2) are distributed on the outside of the vertical tube (1). Multiple liquid storage mechanisms (3) are provided, and the multiple liquid storage mechanisms (3) are distributed on the outside of the vertical tube (1) at positions aligned with the ventilation holes (2).

3. The stratified sampling device for water pollution detection according to claim 1, characterized in that: The circular sleeve (301) is sleeved on the vertical circular tube (1) and fixedly connected to the vertical circular tube (1). Multiple inner opening sliding grooves (302) are provided, and the multiple inner opening sliding grooves (302) are distributed on the inner side of the circular sleeve (301) and aligned with the ventilation hole (2). Multiple seepage holes (303) are provided, and the multiple seepage holes (303) are distributed on the outer side of the circular sleeve (301).

4. A stratified sampling device for water pollution detection according to claim 1, characterized in that: The inner wall of the inner opening slide groove (302) is slidably connected to an arc-shaped slide plate (304), and a limit rod (305) is slidably connected through one side of the arc-shaped slide plate (304).

5. A stratified sampling device for water pollution detection according to claim 4, characterized in that: One end of the limiting rod (305) is slidably connected to the inner wall of the inner opening sliding groove (302), and the other end of the limiting rod (305) is fixedly connected to the outer side of the vertical round tube (1).

6. A stratified sampling device for water pollution detection according to claim 1, characterized in that: The auxiliary mud cleaning mechanism (6) includes an arc-shaped connecting rod (601), the bottom of which is fixedly connected to a trapezoidal arc block (602), and both sides of the trapezoidal arc block (602) are fixedly connected to hard arc brushes (603).

7. A stratified sampling device for water pollution detection according to claim 6, characterized in that: The end of the arc-shaped connecting rod (601) away from the trapezoidal arc block (602) is fixedly connected to one end of the cross rotating rod (5). Multiple trapezoidal arc blocks (602) are provided, and multiple trapezoidal arc blocks (602) are distributed at the bottom of the arc-shaped connecting rod (601) and connected by a connecting rod.

8. A stratified sampling device for water pollution detection according to claim 1, characterized in that: The flow-assisting mechanism (7) includes a top rotating rod (701), a reinforcing sleeve (702) is sleeved on the outside of the top rotating rod (701) and rotatably connected to it via a bearing, a large rounded corner plate (703) is fixedly connected to the outside of the top rotating rod (701), an inner opening groove (704) is provided on the side of the large rounded corner plate (703) away from the top rotating rod (701), a small rounded corner plate (705) is slidably connected to the inner wall of the inner opening groove (704), an inner opening circular groove (706) is provided on one side of the small rounded corner plate (705), a tension spring (707) is fixedly connected to the inner wall of the inner opening circular groove (706), a corrugated plastic strip (708) is fixedly connected to the outside of the small rounded corner plate (705), and side opening grooves (709) are provided on both sides of the small rounded corner plate (705), and an internal locking block (710) is slidably connected to the inner wall of the side opening groove (709).

9. A stratified sampling device for water pollution detection according to claim 8, characterized in that: The bottom of the top rotating rod (701) is rotatably connected to the top of the circular sleeve plate (301) by a rotating bolt, and the bottom of the reinforcing sleeve block (702) is fixedly connected to the top of the circular sleeve plate (301).

10. A stratified sampling device for water pollution detection according to claim 8, characterized in that: Multiple large rounded corner plates (703) are provided, and multiple large rounded corner plates (703) are distributed on the outside of the top rotating rod (701). The end of the extension spring (707) away from the small rounded corner plate (705) is fixedly connected to the inner wall of the inner opening slide groove II (704). One side of the built-in card block (710) is fixedly connected to the inner wall of the inner opening slide groove II (704).

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