Water pollution detection sampling device suitable for high turbidity water body

Abstract

The application provides a water pollution detection sampling device suitable for high turbidity water bodies, relates to the technical field of sampling and comprises a vertical sleeve, the top end of the vertical sleeve is fixedly connected with a U-shaped strip, a sampling unit is installed on the vertical sleeve, an opening and closing unit and a cleaning unit are installed on the sampling unit; the sampling unit comprises a sampling component, a transmission component and a driving component; the sampling unit, the opening and closing unit and the cleaning unit are integrally installed on the vertical sleeve, the first guide wheel and the second guide wheel are driven by the transverse moving block in the same driving component, and the transmission component and the steering control component are respectively controlled; when the operator forwards or reverses the rocking handle, the transverse screw rod drives the transverse moving block to move transversely along the transverse sliding rod, the rotation opening and closing of the valve core and the lifting movement of the piston are triggered in sequence, and the continuous operation of the single rocking handle can be completed, so that the problems of independent driving of sampling and valve control and complicated operation of the existing device are solved.

Description

Technical Field

[0001] This invention relates to the field of sampling technology, and more particularly to a water pollution detection and sampling device suitable for high-turbidity water bodies. Background Technology

[0002] In the field of water environment monitoring, water quality sampling of high-turbidity water bodies (such as natural rivers, landscape lakes, and conventional industrial wastewater containing conventional sediment, phytoplankton, and suspended particulate matter) is a core preliminary step in water pollution detection. The smoothness of liquid inlet and ease of operation of the sampling device directly determine the effectiveness of water sample collection and the reliability of detection data. Currently, conventional water pollution detection sampling devices have the following technical problems when adapted for on-site operation in such high-turbidity water bodies:

[0003] 1. High-turbidity water contains a large number of large particulate impurities (such as large particles of silt, algal clumps, etc.). If such water is directly sucked into the sampling tube, the large particulate impurities will directly interfere with subsequent laboratory test indicators and damage precision testing equipment. Therefore, it is necessary to intercept them during the sampling process. Existing sampling devices mostly use perforated plates to achieve interception. However, large particulate impurities are easy to adhere to and accumulate on the lower surface of the perforated plate, which leads to the water inlet channel being covered and the liquid inlet resistance increasing significantly, making it difficult to complete the sampling operation stably.

[0004] 2. Existing sampling devices typically require the sampling cylinder to work in conjunction with a valve control mechanism to open and close the liquid inlet channel, preventing the water sample in the sampling cylinder from being lost during the device's lifting process. However, in existing sampling devices, the sampling action and valve control action often use independent driving methods, requiring operators to operate step by step, which is cumbersome and prone to errors in the operating sequence (such as taking samples without opening the valve first), leading to sampling failure.

[0005] Based on the above problems, this invention proposes a water pollution detection and sampling device suitable for high turbidity water bodies. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a water pollution detection and sampling device suitable for high-turbidity water bodies.

[0007] The present invention provides a water pollution detection and sampling device suitable for high turbidity water bodies, including a vertical sleeve, a U-shaped strip fixedly connected to the top of the vertical sleeve, a sampling unit installed on the vertical sleeve, and an opening and closing unit and a cleaning unit installed on the sampling unit;

[0008] The sampling unit includes a sampling component, a transmission component, and a driving component;

[0009] The sampling component includes a sampling cylinder, and several sampling cylinders are arranged in a circular array on the lower outer side of the vertical sleeve. The bottom end of the sampling cylinder is connected to a liquid collection tube, and a mesh plate is fixedly connected to the bottom opening of the liquid collection tube. Several water inlet holes are evenly and vertically opened through the mesh plate. A telescopic tube is fixedly connected to the top end of the sampling cylinder, and a fixing plate is fixedly connected to the top end of the telescopic tube. A fixing ring is fixedly connected to the inner side of the top end of the sampling cylinder. A piston is slidably and sealed inside the sampling cylinder below the fixing ring. Several vertical sliding rods are fixedly connected to the top of the piston. The vertical sliding rods slide vertically through the fixing ring and are fixedly connected to the bottom of the fixing plate. One side of the sampling cylinder is fixedly connected to the lower side wall of the vertical sleeve.

[0010] Preferably, the transmission component includes a vertical rod disposed inside the vertical sleeve. The vertical rod is vertically slidably connected to the top wall of the vertical sleeve. The top end of the vertical rod passes through the top wall of the vertical sleeve and is rotatably connected to a first guide wheel. A lifting frame is fixedly sleeved on the outer side of the vertical rod. Several connecting blocks are fixedly connected to the lifting frame in a circular array on the outer side. Each connecting block corresponds to a fixed plate. A clearance elongated hole corresponding to each connecting block is horizontally opened through the side wall of the vertical sleeve. The connecting block is slidably disposed in the corresponding clearance elongated hole. One end of the connecting block extends out of the clearance elongated hole and is fixedly connected to the top of the corresponding fixed plate. A side baffle is fixedly sleeved on the outer side of the connecting block. One side of the side baffle is in a sealing sliding fit with the outer side wall of the vertical sleeve. Two side sliding grooves are symmetrically fixedly connected on the outer side wall of the vertical sleeve and on both sides of the clearance elongated hole. The two sides of the side baffle are slidably connected to the inside of the groove openings of the two side sliding grooves.

[0011] Preferably, the driving component includes a transverse block, on which a first transverse guide groove and a first oblique guide groove are formed. One end of the first transverse guide groove is connected to the top end of the first oblique guide groove. The first guide wheel is rotatably disposed within the first transverse guide groove and the first oblique guide groove. A transverse sliding rod is fixedly connected to the inner side of the U-shaped bar. The transverse block is transversely slidably sleeved on the outer side of the transverse sliding rod. A transverse threaded rod is also rotatably connected to the inner side of the U-shaped bar. The transverse block is threadedly sleeved on the outer side of the transverse threaded rod. A crank is fixedly connected to one end of the transverse threaded rod.

[0012] Preferably, the transverse block is further provided with a second oblique guide groove and a second transverse guide groove, the bottom end of the second oblique guide groove being connected to one end of the second transverse guide groove.

[0013] Preferably, the opening and closing unit includes a valve component and a steering control component. The valve component includes a valve core, which is rotatably and sealingly connected to the inside of the liquid extraction tube. A through hole is provided on the valve core. One end of the valve core extends into the vertical sleeve and is fixedly connected to a connecting strip. The valve core is rotatably and sealingly engaged with the side wall of the vertical sleeve. An eccentric column is rotatably connected to the end of the connecting strip away from the valve core.

[0014] Preferably, the steering control component includes a vertical support rod, which is disposed inside the vertical sleeve, and the top end of the vertical support rod is vertically slidably connected to the top wall of the vertical sleeve. After passing through the vertical sleeve, the top end of the vertical support rod is rotatably connected to a second guide wheel. The second guide wheel is rotatably disposed in a second oblique guide groove and a second transverse guide groove. The bottom end of the vertical support rod is transversely provided with an oblique elongated hole corresponding to an eccentric column. The eccentric column is rotatably disposed in the oblique elongated hole.

[0015] Preferably, the cleaning unit includes a scraping component and a pushing component. The scraping component includes a rotating cylinder, which is rotatably and sealed to the bottom wall of the vertical sleeve. The bottom end of the rotating cylinder extends out of the vertical sleeve and is fixedly connected to a turntable. Several scraping strips are fixedly connected to the outer circumferential array of the turntable. The top surface of the scraping strips slides in contact with the lower surface of the perforated plate when rotating. The inner side of the rotating cylinder is provided with vertical grooves and spiral grooves.

[0016] Preferably, the pushing component includes an inner cylinder, one end of which is fixedly connected to the bottom end of the vertical rod. An outer cylinder is slidably sleeved on the outer side of the inner cylinder, and a rotating wheel is rotatably sleeved on the outer side of the outer cylinder. The rotating wheel is rolled within the vertical groove and the spiral groove. A spring is provided inside both the inner and outer cylinders. One end of the spring is fixedly connected to the inner side of one end of the inner cylinder, and the other end of the spring is fixedly connected to the inner side of one end of the outer cylinder.

[0017] Preferably, the top end of the vertical groove is connected to the top end of the spiral groove, the bottom end of the vertical groove is connected to the bottom end of the spiral groove, a first step is provided at the connection between the top end of the vertical groove and the top end of the spiral groove, and a second step is provided at the connection between the bottom end of the vertical groove and the bottom end of the spiral groove.

[0018] Compared with related technologies, the water pollution detection and sampling device for high-turbidity water bodies provided by the present invention has the following beneficial effects:

[0019] 1. This invention integrates the sampling unit, opening / closing unit, and cleaning unit onto a vertical sleeve. The first and second guide wheels are driven by the transverse block in the same driving component, which in turn controls the transmission component and the steering control component. When the operator shakes the crank in the forward or reverse direction, the transverse threaded rod drives the transverse block to move laterally along the transverse slide rod, thereby triggering the rotation and opening / closing of the valve core and the lifting and lowering of the piston in sequence. This can be accomplished through continuous operation of a single crank, solving the problem of independent driving of sampling and valve control in existing devices, which is cumbersome to operate. It realizes the principle of opening the valve before sampling, and structurally avoids the problem of sampling failure caused by incorrect operation sequence.

[0020] 2. This invention effectively intercepts large particles of silt, algae clumps, and other large impurities in high-turbidity water through the mesh plate of the sampling component, preventing these impurities from interfering with subsequent laboratory testing indicators and damaging precision testing equipment. The inner side of the rotating drum has a connecting vertical groove and a spiral groove, with a first step at the top and a second step at the bottom. When the vertical rod drives the pushing component upwards, and the piston moves upwards to draw in the water sample, the rotating wheel rolls from the bottom to the top of the spiral groove, driving the rotating drum to rotate. The rotating drum then drives the turntable and scraper to rotate simultaneously. As the tube rotates, the top surface of the scraper contacts the lower surface of the perforated plate, cleaning large particles of impurities that adhere to and accumulate on the lower surface of the perforated plate. This solves the problem of blockage in the water inlet channel and increased liquid inlet resistance caused by impurities covering the lower surface of the perforated plate, thus achieving simultaneous sampling and cleaning of the lower surface of the perforated plate. When the vertical rod moves downward to discharge the water sample, the first step prevents the rotating wheel from entering the top of the spiral groove from the top of the vertical groove. The rotating wheel only rolls downward along the vertical groove, the rotating drum does not rotate, the scraper remains stationary, and the scraper and the liquid collection tube are staggered to prevent the scraper from interfering with the water sample discharge process.

[0021] 3. In the pushing component, the spring applies a continuous thrust to the outer cylinder through its elastic force, keeping the rotating wheel in contact with the groove wall of the vertical groove or spiral groove. A side baffle is fixedly sleeved on the outside of the connecting block. The two sides of the side baffle are slidably connected to the inside of the side sliding groove, and one side of the side baffle is sealed and slidably engaged with the outer wall of the vertical sleeve. During the lifting and lowering of the connecting block, the long hole is always blocked and avoided, effectively reducing the risk of external high turbidity water entering the vertical sleeve and causing corrosion to its internal components. Attached Figure Description

[0022] Figure 1 A schematic diagram of the overall structure of the water pollution detection and sampling device for high-turbidity water bodies provided by the present invention;

[0023] Figure 2 This is a partial cross-sectional view of the water pollution detection and sampling device for high-turbidity water bodies in this invention;

[0024] Figure 3 This is a cross-sectional view of the sampling component in this invention;

[0025] Figure 4 This is a schematic diagram of the structure at the elongated hole in this invention;

[0026] Figure 5 This is a schematic diagram of the lifting frame structure in this invention;

[0027] Figure 6 This is a schematic diagram of the structure of the side baffle in this invention;

[0028] Figure 7 This is a schematic diagram of the structure at the transverse block in this invention;

[0029] Figure 8 This is a schematic diagram of the structure of the vertical support rod in this invention;

[0030] Figure 9 This is a schematic diagram of the valve core structure in this invention;

[0031] Figure 10 This is a schematic diagram of the scraper section in this invention;

[0032] Figure 11 This is a schematic diagram of the structure of the rotating cylinder in this invention;

[0033] Figure 12 This is a planar schematic diagram of the vertical groove and spiral groove after they have been unfolded in this invention;

[0034] Figure 13 This is a cross-sectional view of the rotating cylinder in this invention;

[0035] Figure 14 This is an enlarged view of point A in this invention.

[0036] The diagram labels are as follows: 1. Vertical sleeve; 2. U-shaped strip; 3. Sampling unit; 31. Sampling component; 311. Sampling cylinder; 312. Liquid collection tube; 313. Fixing ring; 314. Telescopic tube; 315. Fixing plate; 316. Vertical sliding rod; 317. Piston; 318. Mesh plate; 319. Water inlet; 32. Transmission component; 321. Vertical rod; 322. First guide wheel; 323. Lifting frame; 324. Connecting block; 325. Clearance elongated hole; 326. Side sliding groove; 327. Side baffle; 33. Drive component; 331. Horizontal moving block; 3311. First horizontal guide groove; 3312. First oblique guide groove; 3313. Second oblique guide groove; 331 4. Second horizontal guide groove; 332. Horizontal slide bar; 333. Horizontal threaded rod; 334. Crank handle; 4. Opening and closing unit; 41. Valve component; 411. Valve core; 412. Connecting hole; 413. Connecting bar; 414. Eccentric column; 42. Steering control component; 421. Vertical support rod; 422. Second guide wheel; 423. Slanted elongated hole; 5. Cleaning unit; 51. Scraping component; 511. Rotary drum; 512. Turntable; 513. Scraper; 514. Vertical groove; 515. Spiral groove; 516. First step; 517. Second step; 52. Pushing component; 521. Inner cylinder; 522. Outer cylinder; 523. Rotating wheel; 524. Spring. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0038] Example 1

[0039] Please refer to the following: Figures 1 to 7 A water pollution detection and sampling device suitable for high-turbidity water bodies includes a vertical sleeve 1, with a U-shaped strip 2 fixedly connected to the top of the vertical sleeve 1. A sampling unit 3 is installed on the vertical sleeve 1, and an opening / closing unit 4 and a cleaning unit 5 are installed on the sampling unit 3. The sampling unit 3 includes a sampling component 31, a transmission component 32, and a driving component 33. The sampling component 31 includes a sampling cylinder 311, and several sampling cylinders 311 are arranged in a circumferential array on the lower outer side of the vertical sleeve 1. The bottom end of the sampling cylinder 311 is connected to a liquid collection tube 312, and a perforated plate 318 is fixedly connected to the bottom opening of the liquid collection tube 312. The sampling cylinder 311 has several water inlet holes 319 evenly and vertically through it. The top of the sampling cylinder 311 is fixedly connected to a telescopic tube 314. The top of the telescopic tube 314 is fixedly connected to a fixing plate 315. The inner side of the top of the sampling cylinder 311 is fixedly connected to a fixing ring 313. The sampling cylinder 311 is slidably and sealed below the fixing ring 313. The top of the piston 317 is fixedly connected to several vertical sliding rods 316. The vertical sliding rods 316 slide vertically through the fixing ring 313 and are fixedly connected to the bottom of the fixing plate 315. One side of the sampling cylinder 311 is fixedly connected to the lower side wall of the vertical sleeve 1.

[0040] In the above, the sampling tubes 311 distributed in a circular array can simultaneously collect multiple samples; the mesh plate 318, in conjunction with the water inlet 319, can intercept large particulate impurities in high-turbidity water, preventing large particulate impurities from entering the sampling tube 311; the telescopic tube 314 can extend and deform synchronously with the lifting and lowering of the fixed plate 315, without interfering with the sliding movement of the piston 317, and encloses the vertical sliding rod 316 on the inner side, reducing the risk that sewage erosion of the vertical sliding rod 316 will affect its vertical sliding; the fixing ring 313 provides vertical sliding guidance for the vertical sliding rod 316, which can smoothly transmit the lifting and lowering movement of the fixed plate 315 to the piston 317, so that the piston 317 can complete the sealed sliding within the sampling tube 311, thereby realizing the suction and discharge of water samples.

[0041] Furthermore, the transmission component 32 includes a vertical rod 321, which is disposed inside the vertical sleeve 1. The vertical rod 321 is vertically slidably connected to the top wall of the vertical sleeve 1. The top end of the vertical rod 321 passes through the top wall of the vertical sleeve 1 and is rotatably connected to a first guide wheel 322. A lifting frame 323 is fixedly sleeved on the outer side of the vertical rod 321. Several connecting blocks 324 are fixedly connected to the lifting frame 323 in a circular array on its outer side. The connecting blocks 324 correspond one-to-one with the fixing plate 315. A clearance elongated hole 325 corresponding one-to-one with the connecting block 324 is opened horizontally through the side wall of the vertical sleeve 1. The connecting block 324 is slidably disposed in the corresponding clearance elongated hole 325. The length of the clearance elongated hole 325 is equal to that of the connecting block 324. The lifting stroke is adapted to the connection. One end of the connecting block 324 extends out of the clearance hole 325 and is fixedly connected to the top of the corresponding fixing plate 315. A side baffle 327 is fixedly sleeved on the outer side of the connecting block 324. The size of the side baffle 327 is larger than the size of the clearance hole 325, which can keep the clearance hole 325 blocked. A sealing strip is embedded on the side of the side baffle 327 facing the vertical sleeve 1 to improve the sealing performance. One side of the side baffle 327 is sealed and slidably fitted with the outer side wall of the vertical sleeve 1. Two side sliding grooves 326 are symmetrically fixedly connected on the outer side wall of the vertical sleeve 1 and on both sides of the clearance hole 325. The two sides of the side baffle 327 are slidably connected to the inside of the grooves of the two side sliding grooves 326 respectively.

[0042] In the above, the first guide wheel 322 can convert the lateral movement of the drive component 33 into the vertical lifting and lowering movement of the vertical rod 321, ensuring smooth motion transmission; the lifting frame 323 cooperates with the connecting block 324 to synchronously transmit the vertical movement of the vertical rod 321 to multiple fixed plates 315, realizing the synchronous movement of the pistons 317 in multiple sampling cylinders 311; the clearance elongated hole 325 provides suitable activity space for the lifting and lowering of the connecting block 324, and its length matches the lifting and lowering stroke of the connecting block 324 to avoid motion interference; the side baffle 327 cooperates with the side sliding groove 326 to always block the clearance elongated hole 325 during the lifting and lowering process of the connecting block 324, preventing external high turbidity water from entering the interior of the vertical sleeve 1 and corroding the internal components, thus improving the durability of the device.

[0043] Furthermore, the driving component 33 includes a transverse block 331, on which a first transverse guide groove 3311 and a first oblique guide groove 3312 are provided. One end of the first transverse guide groove 3311 is connected to the top end of the first oblique guide groove 3312. A first guide wheel 322 is rotatably disposed in the first transverse guide groove 3311 and the first oblique guide groove 3312. Both the first transverse guide groove 3311 and the first oblique guide groove 3312 are adapted to the first guide wheel 322. A transverse sliding rod 332 is fixedly connected to the inner side of the U-shaped bar 2. The transverse block 331 is transversely slidably sleeved on the outer side of the transverse sliding rod 332. A transverse threaded rod 333 is also rotatably connected to the inner side of the U-shaped bar 2. The transverse block 331 is threadedly sleeved on the outer side of the transverse threaded rod 333. A crank 334 is fixedly connected to one end of the transverse threaded rod 333.

[0044] In the above, the first horizontal guide groove 3311 on the transverse block 331 cooperates with the first oblique guide groove 3312 to control the movement sequence of the first guide wheel 322; the horizontal slide bar 332 provides lateral sliding guidance for the transverse block 331 to ensure the linearity of the movement of the transverse block 331; the horizontal threaded rod 333 cooperates with the rocker arm 334, and the transverse block 331 can be driven to make lateral linear movement by rotating the rocker arm 334, providing a stable driving force for the device.

[0045] Furthermore, the transverse block 331 is also provided with a second oblique guide groove 3313 and a second transverse guide groove 3314, with the bottom end of the second oblique guide groove 3313 connected to one end of the second transverse guide groove 3314.

[0046] In the above, the second inclined guide groove 3313 and the second horizontal guide groove 3314 cooperate to complete the opening and closing control of the liquid collection tube 312 in conjunction with the opening and closing unit 4. They form a linkage with the first horizontal guide groove 3311 and the first inclined guide groove 3312 to realize the timing coordination of the opening and closing action and the sampling action, so as to avoid the situation of action confusion.

[0047] Example 2

[0048] For further details, please refer to [link / reference]. Figures 1 to 9 Based on Embodiment 1, the opening and closing unit 4 includes a valve component 41 and a steering control component 42. The valve component 41 includes a valve core 411, which is rotatably and sealingly connected to the inner side of the liquid extraction tube 312. A through hole 412 is provided on the valve core 411. Initially, the through hole 412 is horizontally arranged. After rotating 90°, the through hole 412 is vertically arranged. One end of the valve core 411 extends into the vertical sleeve 1 and is fixedly connected to a connecting strip 413. The valve core 411 is rotatably and sealingly engaged with the side wall of the vertical sleeve 1. An eccentric column 414 is rotatably connected to the end of the connecting strip 413 away from the valve core 411.

[0049] In the above, valve component 41 is used to control the opening and closing of the liquid passage inside the liquid collection tube 312. The valve core 411 and the liquid collection tube 312 are rotated and sealed to ensure the sealing when the liquid passage is closed, thus preventing water sample leakage after sampling. The connecting hole 412 can open the liquid passage of the liquid collection tube 312 when the valve core 411 is rotated to the corresponding angle, so as to realize the normal flow of water sample. The connecting strip 413 cooperates with the eccentric column 414 to convert the vertical movement of the steering control component 42 into the rotational movement of the valve core 411, thus completing the opening and closing of the liquid passage. When the connecting hole 412 is rotated to the horizontal position, the valve core 411 completes the sealing of the liquid collection tube 312. When the connecting hole 412 is rotated to the vertical position, the liquid collection tube 312 is connected to the outside.

[0050] Furthermore, the steering control component 42 includes a vertical support rod 421, which is disposed inside the vertical sleeve 1. The top end of the vertical support rod 421 is vertically slidably connected to the top wall of the vertical sleeve 1. After passing through the vertical sleeve 1, the top end of the vertical support rod 421 is rotatably connected to a second guide wheel 422. The second guide wheel 422 is rotatably disposed in the second oblique guide groove 3313 and the second horizontal guide groove 3314. The second oblique guide groove 3313 and the second horizontal guide groove 3314 are both adapted to the second guide wheel 422. The bottom end of the vertical support rod 421 is horizontally opened with an oblique elongated hole 423 corresponding to the eccentric column 414. The eccentric column 414 is rotatably disposed in the oblique elongated hole 423, and the oblique elongated hole 423 is adapted to the eccentric column 414.

[0051] In the above, the second guide wheel 422 can convert the lateral movement of the transverse block 331 into the vertical lifting movement of the vertical frame rod 421, realizing the linkage between the drive component 33 and the steering control component 42; the oblique elongated hole 423 and the eccentric column 414 roll together, which can convert the vertical linear movement of the vertical frame rod 421 into the circumferential movement of the eccentric column 414, thereby driving the valve core 411 to rotate, so that the valve core 411 rotates 90°, completing the opening and closing of the liquid collection tube 312.

[0052] Example 3

[0053] For further details, please refer to [link / reference]. Figures 1 to 14 Based on Embodiment 2, the cleaning unit 5 includes a scraping component 51 and a pushing component 52. The scraping component 51 includes a rotating cylinder 511, which is rotatably and sealed to the bottom wall of the vertical sleeve 1. The bottom end of the rotating cylinder 511 extends out of the vertical sleeve 1 and is fixedly connected to a turntable 512. Several scraping strips 513 are fixedly connected to the outer circumferential array of the turntable 512. The top surface of the scraping strips 513 slides in contact with the lower surface of the mesh plate 318 when rotating. The inner side of the rotating cylinder 511 is provided with a vertical groove 514 and a spiral groove 515. Initially, the scraping strips 513 and the liquid collection tube 312 are staggered.

[0054] In the above, the scraping component 51 is used to clean the attached impurities on the lower surface of the perforated plate 318. The rotating drum 511 provides rotational support for the turntable 512 and the scraper 513. Its rotatable and sealed connection with the bottom wall of the vertical sleeve 1 can prevent water from entering the interior of the vertical sleeve 1. The scraper 513 slides in contact with the lower surface of the perforated plate 318 and can scrape off the impurities attached to the lower surface of the perforated plate 318 during rotation, reducing the risk of the water inlet 319 being blocked. The scraper 513 and the liquid collection tube 312 are staggered to avoid the scraper 513 interfering with the water sample discharge process. The vertical groove 514 and the spiral groove 515 cooperate to control the rotation sequence of the rotating drum 511, realizing the function of cleaning during sampling and keeping the rotating drum 511 from rotating during water sample discharge.

[0055] Furthermore, the pushing component 52 includes an inner cylinder 521, one end of which is fixedly connected to the bottom side of the vertical rod 321. An outer cylinder 522 is slidably sleeved on the outer side of the inner cylinder 521, and a rotating wheel 523 is rotatably sleeved on the outer side of the outer cylinder 522. The rotating wheel 523 is rotatably disposed in the vertical groove 514 and the spiral groove 515. Both the vertical groove 514 and the spiral groove 515 are adapted to the rotating wheel 523. A spring 524 is provided inside both the inner cylinder 521 and the outer cylinder 522. One end of the spring 524 is fixedly connected to the inner side of one end of the inner cylinder 521, and the other end of the spring 524 is fixedly connected to the inner side of one end of the outer cylinder 522.

[0056] In the above, the pushing component 52 can transmit the vertical lifting and lowering motion of the vertical rod 321 to the scraping component 51. The inner cylinder 521 and the outer cylinder 522 slide together to accommodate the displacement of the rotating wheel 523 in the groove. The rotating wheel 523 rolls together with the vertical groove 514 and the spiral groove 515 to reduce the frictional resistance of the motion and ensure smooth movement. The spring 524 can apply a continuous elastic thrust to the outer cylinder 522 so that the rotating wheel 523 is always in close contact with the groove wall of the vertical groove 514 or the spiral groove 515.

[0057] Furthermore, the top end of the vertical groove 514 is connected to the top end of the spiral groove 515, and the bottom end of the vertical groove 514 is connected to the bottom end of the spiral groove 515, thereby forming a closed annular guide path on the inner side of the rotating cylinder 511. A first step portion 516 is provided at the connection between the top end of the vertical groove 514 and the top end of the spiral groove 515, and a second step portion 517 is provided at the connection between the bottom end of the vertical groove 514 and the bottom end of the spiral groove 515; the first step portion 516 is formed by a step with a height difference at the connection between the top of the spiral groove 515 and the top of the vertical groove 514, so that the wheel 523 can only roll from the top of the spiral groove 515 into the top of the vertical groove 514, and is blocked by the first step 516 in the opposite direction; the second step 517 is formed by a step with a height difference at the connection between the bottom of the vertical groove 514 and the bottom of the spiral groove 515, so that the wheel 523 can only roll from the bottom of the vertical groove 514 into the bottom of the spiral groove 515, and is blocked by the second step 517 in the opposite direction.

[0058] In the above, the depth of the top of the vertical groove 514 is greater than the depth of its bottom. This structure, together with the first step 516 and the second step 517, can further limit the rolling path of the rotating wheel 523, preventing the rotating wheel 523 from entering the spiral groove 515 in the opposite direction at the top of the vertical groove 514, and ensuring that the rotating wheel 523 can only roll along the preset unidirectional path; so that when the vertical rod 321 moves down, the rotating wheel 523 rolls along the vertical groove 514 and the rotating cylinder 511 does not rotate, and when the vertical rod 321 moves up, it rolls along the spiral groove 515 and the rotating cylinder 511 rotates synchronously, realizing the function of cleaning the mesh plate 318 during sampling and keeping the scraper 513 stationary when the water sample is discharged.

[0059] The working principle of the water pollution detection and sampling device for high-turbidity water bodies provided by this invention is as follows:

[0060] In the initial state: the valve core 411 is in the closed state, the connecting hole 412 on the valve core 411 is offset from the inlet and outlet of the liquid collection tube 312, completely blocking the liquid passage of the liquid collection tube 312; the piston 317 is slidably sealed at the top of the inner side of the sampling cylinder 311, and the telescopic tube 314 is in a naturally extended state; the transverse block 331 is located in the initial transverse position close to the crank handle 334. Initially, the first guide wheel 322 is located at the end of the first transverse guide groove 3311 away from the first oblique guide groove 3312, and the second guide wheel 422 is located at the top of the second oblique guide groove 3313; the rotating wheel 523 is located at the top of the vertical groove 514.

[0061] The operator holds the upper part of the vertical sleeve 1 and smoothly inserts the bottom end of the device into the predetermined sampling depth of the high turbidity water body, keeping the vertical sleeve 1 vertical and not shaking; then, the operator shakes the handle 334 in the forward direction. The handle 334 drives the horizontal threaded rod 333 to rotate around its own axis. Because the transverse moving block 331 is threaded on the outside of the horizontal threaded rod 333 and is laterally slidably sleeved on the transverse sliding rod 332, the transverse moving block 331 moves laterally in a straight line along the transverse sliding rod 332 away from the handle 334.

[0062] During the lateral movement of the transverse block 331, the second guide wheel 422 rolls from the top to the bottom along the second inclined guide groove 3313, causing the second guide wheel 422 to be subjected to a downward thrust. When the second guide wheel 422 rolls to the bottom of the second inclined guide groove 3313, it enters the second transverse guide groove 3314 and continues to roll. When the second guide wheel 422 is subjected to a downward thrust, it drives the vertical frame rod 421 to slide linearly downward along the top wall of the vertical sleeve 1. The bottom end of the vertical frame rod 421 has an inclined... The elongated hole 423 has an eccentric column 414 that is rolled inside it. When the vertical support rod 421 moves down, the eccentric column 414 rolls along the groove wall of the elongated hole 423. Through the connecting strip 413, it drives the valve core 411 to rotate around its own axis inside the liquid collection tube 312. When the valve core 411 rotates 90°, the connecting hole 412 is completely aligned with the inlet and outlet of the liquid collection tube 312. The valve core 411 releases the blockage of the liquid collection tube 312, the sampling liquid path is opened, and the valve opening action is completed.

[0063] During this process, when the second guide wheel 422 rolls from the second oblique guide groove 3313 into the second horizontal guide groove 3314, the first guide wheel 322 just enters the top of the first oblique guide groove 3312 from the first horizontal guide groove 3311, so that the sampling action will be triggered only after the valve opening action is completed, thus avoiding liquid circuit chaos caused by premature sampling.

[0064] The transverse block 331 continues to move laterally away from the crank handle 334. The first guide wheel 322 rolls from the top to the bottom along the first inclined guide groove 3312, causing the vertical rod 321 to slide downwards in a straight line along the top wall of the vertical sleeve 1. The lifting frame 323, which is fixedly sleeved on the outside of the vertical rod 321, moves down synchronously with the vertical rod 321. The connecting block 324 on the outside of the lifting frame 323 slides from the top to the bottom along the clearance hole 325. The side baffle 327 on the outside of the connecting block 324 moves down synchronously along the side sliding groove 326. The side baffle 327 always slides in a sealed manner with the outer wall of the vertical sleeve 1 throughout the entire lifting process, keeping the clearance hole 325 blocked and reducing the risk of external high turbidity water entering the interior of the vertical sleeve 1 and affecting its internal components.

[0065] One end of the connecting block 324 extends out of the clearance hole 325 and is fixedly connected to the top of the fixing plate 315. When the connecting block 324 moves down, it drives the fixing plate 315 to move down synchronously. When the fixing plate 315 moves down, the vertical sliding rod 316 slides down along the fixing ring 313, the telescopic tube 314 is compressed, and the piston 317 slides from the top to the bottom in the sampling cylinder 311 to seal until the piston 317 fits against the inner bottom of the sampling cylinder 311, thus completing the positioning action of the sampling component 31.

[0066] At the same time, when the vertical rod 321 moves down, it drives the inner cylinder 521 on one side of its bottom end to move down synchronously. The outer cylinder 522 slides along the outside of the inner cylinder 521, and the rotating wheel 523 rolls along the top of the vertical groove 514 to the bottom along with the outer cylinder 522. Because a first step 516 is provided at the connection between the top of the vertical groove 514 and the top of the spiral groove 515, the first step 516 can prevent the rotating wheel 523 from entering the spiral groove 515 from the top of the vertical groove 514. Therefore, during this process, the rotating wheel 523 rolls down along the vertical groove 514, the rotating cylinder 511 does not rotate, and the spring 524 always applies a pushing force to the outer cylinder 522 through elastic force, so that the rotating wheel 523 can maintain close contact with the groove wall of the vertical groove 514 or the spiral groove 515. When the piston 317 reaches the bottom of the inner side of the sampling cylinder 311, the rotating wheel 523 just rolls to the bottom of the spiral groove 515, and all the preparatory actions before sampling are completed.

[0067] Subsequently, the operator reverses the crank handle 334, causing the horizontal threaded rod 333 to rotate in the opposite direction, which in turn drives the horizontal moving block 331 to move laterally in a straight line along the horizontal sliding rod 332 towards the crank handle 334; the first guide wheel 322 rolls from the bottom to the top along the first inclined guide groove 3312, which in turn drives the vertical rod 321 to slide upward in a straight line along the top wall of the vertical sleeve 1, and the lifting frame 323 and the connecting block 324 move upward in sync, which in turn drives the fixing plate 315 and the vertical sliding rod 316 to move upward, and the piston 317 slides in a sealed manner from the bottom to the top in the sampling cylinder 311.

[0068] During the upward movement of piston 317, a negative pressure is formed inside sampling cylinder 311. The high-turbidity water sample from the outside is sequentially drawn into sampling cylinder 311 through the water inlet 319 on mesh plate 318, the connecting hole 412 on valve core 411, and liquid collection tube 312. The water inlet 319 of mesh plate 318 can effectively block large particulate impurities in the water, preventing large particulate impurities from entering sampling cylinder 311 and causing component blockage or water sample contamination, thus ensuring the purity of the sample.

[0069] While the piston 317 moves upward to take a sample, the vertical rod 321 drives the pushing component 52 to move upward synchronously, and the rotating wheel 523 rolls from the bottom end to the top end of the spiral groove 515. Because the spiral groove 515 is a spiral guide structure, the rotating wheel 523 generates a circumferential thrust on the groove wall of the spiral groove 515 when it moves upward, driving the rotating cylinder 511 to rotate around its own axis. The rotating cylinder 511 drives the rotating disk 512 to rotate synchronously, and the scraper 513 on the outside of the rotating disk 512 makes a circular motion. As the scraper 513 rotates to contact the lower surface of the mesh plate 318, the scraper 513 can completely scrape off the impurities adsorbed or accumulated on the lower surface of the mesh plate 318 during the rotation process. This can achieve the cleaning of the lower surface of the mesh plate 318 at the same time as sampling, effectively reducing the risk of impurities in high turbidity water causing the mesh plate 318 to be blocked, and ensuring the smooth flow of the sampling liquid path.

[0070] The transverse block 331 continues to move laterally in the opposite direction to the initial position. The second guide wheel 422 rolls in the opposite direction along the second transverse guide groove 3314 and the second oblique guide groove 3313 to the initial position, driving the vertical frame rod 421 to slide upward along the top wall of the vertical sleeve 1 to the initial height. When the vertical frame rod 421 moves upward, the eccentric column 414 rolls in the opposite direction along the oblique elongated hole 423, driving the valve core 411 to rotate 90° in the opposite direction through the connecting strip 413, so that the inlet and outlet of the connecting hole 412 and the liquid collection tube 312 are misaligned again. The valve core 411 completely seals the liquid path of the liquid collection tube 312 again, sealing and preserving the water sample sucked into the sampling tube 311 to prevent the water sample from being lost or mixed with external water. At this time, the device can be smoothly removed from the high turbidity water body to complete the water sample collection operation.

[0071] After sampling, place the device at the designated water sample processing position. Place a water sample collection bottle directly below each sampling tube 312, ensuring that the collection bottle is aligned vertically with the sampling tube 312. Then, shake the handle 334 forward again to rotate the valve core 411 90° and open the sampling tube 312. The piston 317 slides from the top to the bottom of the sampling cylinder 311 in a sealing manner. The thrust of the piston 317 pushes the water sample in the sampling cylinder 311 smoothly out through the sampling tube 312 and into the corresponding collection bottle below.

[0072] During the water sample discharge process, the rotor 523 always rolls downward along the vertical groove 514. The first step 516 effectively prevents the rotor 523 from entering the spiral groove 515. Therefore, the rotating drum 511 does not rotate. Furthermore, the scraper 513 and the liquid collection tube 312 are staggered and will not interfere with the downward discharge of the water sample, thus ensuring the smooth discharge process of the water sample.

[0073] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A water pollution detection and sampling device suitable for high-turbidity water bodies, comprising a vertical sleeve (1), wherein a U-shaped strip (2) is fixedly connected to the top end of the vertical sleeve (1), characterized in that, A sampling unit (3) is installed on the vertical sleeve (1), and an opening and closing unit (4) and a cleaning unit (5) are installed on the sampling unit (3). The sampling unit (3) includes a sampling component (31), a transmission component (32), and a driving component (33). The sampling component (31) includes a sampling tube (311). Several sampling tubes (311) are arranged in a circular array on the lower outer side of the vertical sleeve (1). The bottom end of the sampling tube (311) is connected to a liquid collection tube (312). A mesh plate (318) is fixedly connected to the bottom opening of the liquid collection tube (312). Several water inlet holes (319) are evenly and vertically penetrated on the mesh plate (318). A telescopic tube (314) is fixedly connected to the top end of the sampling tube (311). The top end of the telescopic tube (314) A fixed plate (315) is fixedly connected to the top of the sampling tube (311), and a fixed ring (313) is fixedly connected to the inner side of the top of the sampling tube (311). A piston (317) is slidably and sealed inside the sampling tube (311) below the fixed ring (313). Several vertical sliding rods (316) are fixedly connected to the top of the piston (317). The vertical sliding rods (316) slide vertically through the fixed ring (313) and are fixedly connected to the bottom of the fixed plate (315). One side of the sampling tube (311) is fixedly connected to the lower side wall of the vertical sleeve (1).

2. The water pollution detection and sampling device suitable for high-turbidity water bodies according to claim 1, characterized in that, The transmission component (32) includes a vertical rod (321), which is disposed on the inner side of the vertical sleeve (1). The vertical rod (321) is vertically slidably connected to the top wall of the vertical sleeve (1). The top end of the vertical rod (321) passes through the top wall of the vertical sleeve (1) and is rotatably connected to a first guide wheel (322). A lifting frame (323) is fixedly sleeved on the outer side of the vertical rod (321). Several connecting blocks (324) are fixedly connected to the lifting frame (323) in a circular array on the outer side. The connecting blocks (324) correspond one-to-one with the fixing plate (315). A horizontal through-hole opening corresponding to the connecting blocks (324) is provided on the side wall of the vertical sleeve (1). The connecting block (324) is slidably disposed in the corresponding long hole (325). One end of the connecting block (324) extends out of the long hole (325) and is fixedly connected to the top of the corresponding fixing plate (315). A side baffle (327) is fixedly sleeved on the outside of the connecting block (324). One side of the side baffle (327) is sealed and slidably fitted with the outer wall of the vertical sleeve (1). Two side sliding grooves (326) are symmetrically fixedly connected on the outer wall of the vertical sleeve (1) and on both sides of the long hole (325). The two sides of the side baffle (327) are slidably connected to the inside of the grooves of the two side sliding grooves (326).

3. The water pollution detection and sampling device suitable for high-turbidity water bodies according to claim 2, characterized in that, The driving component (33) includes a transverse block (331), on which a first transverse guide groove (3311) and a first oblique guide groove (3312) are provided. One end of the first transverse guide groove (3311) is connected to the top end of the first oblique guide groove (3312). The first guide wheel (322) is rolled in the first transverse guide groove (3311) and the first oblique guide groove (3312). A transverse slide rod (332) is fixedly connected to the inner side of the U-shaped bar (2). The transverse block (331) is transversely slidably sleeved on the outer side of the transverse slide rod (332). A transverse threaded rod (333) is also rotatably connected to the inner side of the U-shaped bar (2). The transverse block (331) is threadedly sleeved on the outer side of the transverse threaded rod (333). One end of the transverse threaded rod (333) is fixedly connected to a crank (334).

4. A water pollution detection and sampling device suitable for high-turbidity water bodies according to claim 3, characterized in that, The transverse block (331) is also provided with a second oblique guide groove (3313) and a second horizontal guide groove (3314), the bottom end of the second oblique guide groove (3313) is connected to one end of the second horizontal guide groove (3314).

5. A water pollution detection and sampling device suitable for high-turbidity water bodies according to claim 4, characterized in that, The opening and closing unit (4) includes a valve component (41) and a steering control component (42). The valve component (41) includes a valve core (411). The valve core (411) is rotatably and sealingly connected to the inside of the liquid collection tube (312). A through hole (412) is provided on the valve core (411). One end of the valve core (411) extends into the vertical sleeve (1) and is fixedly connected to a connecting strip (413). The valve core (411) is rotatably and sealingly engaged with the side wall of the vertical sleeve (1). An eccentric column (414) is rotatably connected to the end of the connecting strip (413) away from the valve core (411).

6. A water pollution detection and sampling device suitable for high-turbidity water bodies according to claim 5, characterized in that, The steering control component (42) includes a vertical rod (421), which is located inside the vertical sleeve (1). The top end of the vertical rod (421) is vertically slidably connected to the top wall of the vertical sleeve (1). The top end of the vertical rod (421) passes through the vertical sleeve (1) and is rotatably connected to a second guide wheel (422). The second guide wheel (422) is rotatably disposed in the second oblique guide groove (3313) and the second horizontal guide groove (3314). The bottom end of the vertical rod (421) is horizontally opened with an oblique elongated hole (423) corresponding to the eccentric column (414). The eccentric column (414) is rotatably disposed in the oblique elongated hole (423).

7. A water pollution detection and sampling device suitable for high-turbidity water bodies according to claim 1, characterized in that, The cleaning unit (5) includes a scraping component (51) and a pushing component (52). The scraping component (51) includes a rotating cylinder (511). The rotating cylinder (511) is rotatably and sealed to the bottom wall of the vertical sleeve (1). The bottom end of the rotating cylinder (511) extends out of the vertical sleeve (1) and is fixedly connected to a turntable (512). Several scraping strips (513) are fixedly connected to the outer circumferential array of the turntable (512). The inner side of the rotating cylinder (511) is provided with a vertical groove (514) and a spiral groove (515).

8. A water pollution detection and sampling device suitable for high-turbidity water bodies according to claim 7, characterized in that, The pushing component (52) includes an inner cylinder (521), one end of which is fixedly connected to the bottom side of the vertical rod (321). An outer cylinder (522) is slidably sleeved on the outer side of the inner cylinder (521), and a rotating wheel (523) is rotatably sleeved on the outer side of the outer cylinder (522). The rotating wheel (523) is rotatably disposed in the vertical groove (514) and the spiral groove (515). A spring (524) is provided inside the inner cylinder (521) and the outer cylinder (522). One end of the spring (524) is fixedly connected to the inner side of one end of the inner cylinder (521), and the other end of the spring (524) is fixedly connected to the inner side of one end of the outer cylinder (522).

9. A water pollution detection and sampling device suitable for high-turbidity water bodies according to claim 7, characterized in that, The top end of the vertical groove (514) is connected to the top end of the spiral groove (515), the bottom end of the vertical groove (514) is connected to the bottom end of the spiral groove (515), a first step (516) is provided at the connection between the top end of the vertical groove (514) and the top end of the spiral groove (515), and a second step (517) is provided at the connection between the bottom end of the vertical groove (514) and the bottom end of the spiral groove (515).

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