Water quality sampling device for environment detection

Abstract

The invention relates to a water quality sampling device for environment detection, and belongs to the technical field of environment detection equipment, the water quality sampling device comprises a supporting column and a sampling bottle, the supporting column is vertically arranged, the bottom end of the supporting column is rotatably sleeved with a rotating sleeve, and the bottom end of the rotating sleeve is fixedly sleeved with a fixing plate; the plurality of sampling bottles are uniformly arranged on the fixed plate; a sealing cover is correspondingly arranged right above each sampling bottle; the upper end of the rotating sleeve is fixedly sleeved with a supporting plate, the supporting plate is provided with a plurality of lifting assemblies, and the lifting assemblies correspond to the sealing covers one to one and are used for driving the corresponding sealing covers to ascend and descend. A floating platform is arranged above the supporting column, a moving assembly and a rotating assembly are arranged on the floating platform, the moving assembly is used for driving the supporting column to move in the vertical direction, the rotating assembly is used for driving the supporting plate to rotate, and the water sample detection device has the effect of improving the water sample detection accuracy.

Description

Technical Field

[0001] This application relates to the technical field of environmental testing equipment, and in particular to a water quality sampling device for environmental testing. Background Technology

[0002] Water sampling involves collecting water samples from polluted water bodies and analyzing them to obtain basic data on water pollution. The water samples used for analysis should be representative and reflect the chemical composition and characteristics of the water body.

[0003] Most common water samplers currently use a bottle-type structure, mainly composed of sampling bottles, a metal frame, and ropes. Multiple sampling bottles are typically installed evenly on the metal frame, with stoppers inserted into the bottle openings. A pull rope is connected to the outer end of each stopper, and a lifting rope is attached to the metal frame. During sampling, the operator holds one end of the pull rope and the lifting rope and lowers the metal frame to the target water area. Using its own weight, the metal frame pulls the sampling bottles down gradually. When the sampling bottle reaches the first predetermined depth, pulling the corresponding pull rope moves the stopper upwards and detaches it from the bottle opening, allowing surrounding water sample to be injected into the bottle, completing the sampling at that depth. Subsequently, the metal frame continues to descend, and at the second depth, pulling the corresponding pull rope again dislodges the stopper, completing the water sample collection for that layer. In this way, water sampling at multiple different depths can be completed layer by layer.

[0004] Regarding the aforementioned technologies, during the collection process, as the sampling bottle goes deeper, the water sample at the inner end of the sampler that has already been sampled will be continuously replaced, resulting in the final collected water sample being a mixture of water samples from various depths in the area. This makes the test results unable to reflect the degree of pollution of the water source, thus resulting in a deficiency of low accuracy in water sample detection. Summary of the Invention

[0005] To improve the accuracy of water sample testing, this application provides a water quality sampling device for environmental testing.

[0006] The environmental testing water quality sampling device provided in this application adopts the following technical solution: An environmental water quality sampling device includes a support column and sampling bottles. The support column is vertically arranged, with a rotating sleeve rotatably fitted at its bottom end, and a fixed plate fixedly fitted at the bottom end of the rotating sleeve. Multiple sampling bottles are evenly mounted on the fixed plate. Each sampling bottle has a corresponding sealing cap directly above it. The upper end of the rotating sleeve is fixedly fitted with the support plate, which has multiple sets of lifting components. Each set of lifting components corresponds to a sealing cap and is used to drive the corresponding sealing cap to move up and down. A floating platform is located above the support column, and the floating platform has a moving component and a rotating component. The moving component drives the support column to move vertically, and the rotating component drives the support plate to rotate.

[0007] By adopting the above technical solution, the moving component controls the support column and sampling bottle to be lowered to different depths, the rotating component drives the support plate and sampling bottle to rotate to the corresponding sampling position, and the lifting component can independently control the opening and closing of each sealing cap, thereby realizing layered and fixed-point sampling, avoiding the mixing of water samples at different depths, and effectively improving the accuracy and representativeness of water quality testing.

[0008] Optionally, the lifting assembly includes a vertically arranged first threaded sleeve and a first screw threadedly connected to the first threaded sleeve. The bottom end of the first threaded sleeve passes through the support plate and is rotatably connected to the support plate. The bottom end of the first screw is fixedly connected to the sealing cover. A sliding rod is fixedly provided on the upper surface of the sealing cover. The sliding rod is parallel to the first threaded sleeve and passes through the support plate and is slidably connected to the support plate.

[0009] By adopting the above technical solution, rotating the first threaded sleeve can drive the first screw and the sealing cap to rise and fall smoothly in the vertical direction, thereby achieving the sealing and opening of the sampling bottle; the sliding cooperation between the slide rod and the support plate ensures the stability and centering of the sealing cap during the lifting and lowering process.

[0010] Optionally, a first gear is fixedly sleeved on the first threaded sleeve, and a first arc-shaped rack and a second arc-shaped rack are connected to one side of the support column. The first arc-shaped rack and the second arc-shaped rack are respectively located on opposite sides of the first gear and are staggered with each other. The first arc-shaped rack and the second arc-shaped rack are meshed with the first gear.

[0011] By adopting the above technical solution, when the support plate drives the first threaded sleeve to move, the first threaded sleeve drives the first gear to move. When the first gear moves to the position of the first arc-shaped rack, as the support plate continues to rotate, the first gear rotates under the guidance of the first arc-shaped rack, and drives the first threaded sleeve to rotate. Under the guidance of the slide rod, the first screw moves upward, driving the corresponding sealing cap to move upward, so that the sampling bottle at the first arc-shaped rack opens for water sample collection. After collection, the support plate continues to rotate, the first gear and the first arc-shaped rack disengage, the first gear and the second arc-shaped rack mesh, and under the guidance of the second arc-shaped rack, the first gear flips, so that the sealing cap seals the sealing cap of the collected water sample again. The arrangement of the first gear, the first arc-shaped rack and the second arc-shaped rack facilitates the rotation of the first threaded sleeve.

[0012] Optionally, an annular plate is provided above the support plate, the annular plate is sleeved on the outside of the support column, and a connecting rod is fixedly connected between the annular plate and the support plate; multiple sets of fixing components are provided on the annular plate, each set of fixing components corresponds to each of the first gears, and is used to fix or separate from the corresponding first gear.

[0013] By adopting the above technical solution, the annular plate and the support plate are fixedly connected by a connecting rod, which ensures the integrity and stability of the structure; the setting of the fixing component can lock or release the first gear, ensuring that the sealing cover remains stable during the sampling process and avoiding accidental opening or closing due to water flow or vibration.

[0014] Optionally, a fixing groove is formed on the upper surface of the first gear; the fixing component includes a fixing rod and a first spring, the fixing rod passes through the annular plate and is slidably connected to the annular plate, and the fixing rod is inserted into and adapted to the fixing groove; an auxiliary plate is fixedly provided at the upper end of the fixing rod, the first spring is fixed between the auxiliary plate and the annular plate and sleeved on the outside of the fixing rod, and the first spring is always in a stretched state; a pushing component for pushing the fixing rod upward is provided at the support column.

[0015] By adopting the above technical solution, the fixing rod automatically inserts into the fixing slot under the action of the spring, thereby locking the gear; the pushing component can automatically pull out the fixing rod when the first gear needs to be rotated, thereby releasing and controlling the rotation of the gear. This structure has a high degree of automation and reliable operation.

[0016] Optionally, the pushing assembly includes a guide plate and a push plate; multiple guide plates are provided, each fixedly connected to a corresponding fixed rod; the push plate is fixedly disposed on one side of the support column, and one side of the push plate and one side of the guide plate are provided with mutually fitting inclined surfaces.

[0017] By adopting the above technical solution, when the support plate rotates and the guide plate contacts the push plate, the interaction of the inclined planes pushes the guide plate and the fixing rod upward, realizing the automatic release of the gear. This structure requires no additional power, relies on mechanical linkage to achieve function switching, and is simple and reliable.

[0018] Optionally, a rotating tube is rotatably connected to the lower surface of the floating platform. The rotating tube is sleeved outside the support column, and a linkage rod is connected to the side wall of the rotating tube. The end of the linkage rod away from the rotating tube is fixedly connected to the support plate. The rotating assembly includes a second gear and a third gear. A rotating rod is vertically provided on one side of the support column. The rotating rod passes through the floating platform and is rotatably connected to the floating platform. The second gear is fixedly installed at the bottom end of the rotating rod. The third gear is fixedly sleeved outside the rotating tube, and the second gear meshes with the third gear.

[0019] By adopting the above technical solution, the rotation of the rotating rod is driven by the second and third gears, which in turn drive the rotating tube and support plate to rotate, thereby realizing the switching of sampling bottle positions. The gear transmission is smooth and the positioning is accurate, which facilitates the orderly sampling of multiple bottles at multiple depths.

[0020] Optionally, a rotating plate is fixedly provided at the upper end of the rotating rod, and multiple positioning pointers are evenly provided on the upper surface of the rotating plate, with each positioning pointer corresponding to each sampling bottle; a positioning rod is fixedly provided on the floating platform.

[0021] By adopting the above technical solution, the operator can intuitively determine the sampling bottle number currently in the sampling state by observing the relative position of the positioning pointer and the positioning rod, thus improving the intuitiveness and accuracy of the operation.

[0022] Optionally, the moving component includes a vertically arranged second threaded sleeve and a second screw threadedly connected to the second threaded sleeve; the bottom end of the second threaded sleeve is rotatably connected to the upper surface of the floating platform; the bottom end of the second screw passes through the floating platform and is fixedly connected to the upper end of the support column, a guide plate is fixedly provided at the upper end of the second screw, and a telescopic rod is provided between the guide plate and the floating platform.

[0023] By adopting the above technical solution, rotating the second threaded sleeve can drive the second screw and support column to rise and fall smoothly in the vertical direction, thereby achieving precise control of the sampling depth; the telescopic rod provides auxiliary support and guidance to ensure the stability of the lifting process.

[0024] Optionally, a support plate fixedly connected to the floating platform is provided on one side of the second threaded sleeve; an operating rod is provided on the support plate, the operating rod passes through the support plate and is rotatably connected to the support plate; a handwheel is fixedly provided at one end of the operating rod, and a first bevel gear is fixedly provided at the other end; a second bevel gear is fixedly sleeved on the second threaded sleeve, and the first bevel gear meshes with the second bevel gear.

[0025] By adopting the above technical solution, the operator can rotate the first and second bevel gears by turning the handwheel, which in turn drives the second threaded sleeve to rotate, thereby adjusting the sampling depth. This structure is labor-saving to operate, provides precise adjustment, and is suitable for long-term, repetitive sampling operations.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. Through the linkage design of the rotating component and the lifting component, multiple sampling bottles can be opened and closed independently at different depths, which effectively avoids the mixing of water samples from different depths and significantly improves the representativeness and accuracy of water sample testing; 2. An automatic opening and closing mechanism using gears and racks, combined with fixed and pushing components, enables automated control of the sampling process, making it easy to operate and providing precise positioning; 3. The combination of the floating platform and the moving components gives the device good stability and depth adjustment capabilities, making it suitable for sampling needs in different aquatic environments and improving the applicability and reliability of the device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an environmental testing water quality sampling device according to an embodiment of this application; Figure 2 This is a schematic diagram illustrating the structure of the rotating sleeve in the embodiments of this application; Figure 3 yes Figure 2 A magnified view of part A in the diagram.

[0028] In the diagram, 1. Support column; 11. Sampling bottle; 12. Rotating sleeve; 13. Fixing plate; 14. Sealing cap; 15. Sliding rod; 16. First gear; 161. Fixing groove; 17. First arc-shaped rack; 18. Second arc-shaped rack; 2. Support plate; 21. Annular plate; 22. Connecting rod; 3. Lifting assembly; 31. First threaded sleeve; 32. First screw; 4. Floating platform; 41. Rotating tube; 42. Linkage rod; 43. Rotating rod; 44. Rotating plate; 45. Fixed... 46. ​​Position pointer; 47. Positioning rod; 48. Guide plate; 49. Telescopic rod; 50. Moving assembly; 51. Second threaded sleeve; 52. Second screw; 61. Rotating assembly; 62. Second gear; 73. Third gear; 74. Fixing assembly; 75. Fixing rod; 76. Auxiliary plate; 77. First spring; 8. Pushing assembly; 88. Guide plate; 89. Push plate; 90. Bearing plate; 91. Operating lever; 92. Handwheel; 93. First bevel gear; 94. Second bevel gear. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0030] This application discloses an environmental testing water quality sampling device.

[0031] refer to Figure 1 An environmental water quality sampling device includes a floating platform 4, which is a square floating structure made of high-density foam or hollow buoyancy material. It can float on the water surface and provide stable support for the device. A support column 1 is located at the center of the lower surface of the floating platform 4. The support column 1 is a vertically arranged cylindrical rod made of high-strength, lightweight alloy material, possessing both good rigidity and corrosion resistance, and can adapt to the sampling needs of various aquatic environments.

[0032] refer to Figure 1 , Figure 2 and Figure 3A rotating sleeve 12 is rotatably fitted onto the bottom end of the support column 1 via a bearing. The rotating sleeve 12 is an annular tubular structure, with its inner wall precisely fitted to the outer wall of the support column 1 to ensure smooth rotation without significant radial wobble. A horizontally positioned fixing plate 13 is fixedly fitted onto the bottom end of the rotating sleeve 12. The fixing plate 13 is a circular flat plate structure, on which four sampling bottles 11 are mounted. The four sampling bottles 11 are evenly distributed and fixedly installed at the circumferential edge of the fixing plate 13. The sampling bottles 11 are made of transparent acid and alkali resistant glass or polymer material, with the bottle opening facing upwards for easy water sample injection and subsequent observation. A sealing cap 14 is correspondingly positioned directly above each sampling bottle 11. The sealing cap 14 is a circular cap with a diameter smaller than the bottle opening of the sampling bottle 11.

[0033] Before sampling, the sealing cap 14 is closed to seal the mouth of the sampling bottle 11, preventing water from entering the bottle prematurely during the lowering of the device. During sampling, the sealing cap 14 is opened upwards, and the water sample flows into the sampling bottle 11 under gravity. After the collection is completed, the sealing cap 14 is closed again to achieve the isolation and preservation of the water sample.

[0034] refer to Figure 1 , Figure 2 and Figure 3 A horizontally arranged support plate 2 is fixedly sleeved on the upper end of the rotating sleeve 12. The support plate 2 is parallel to and coaxially arranged with the fixed plate 13, and the two form a synchronous rotation structure through the rotating sleeve 12. A set of lifting components 3 is provided on the support plate 2 corresponding to each sealing cap 14 position, which is used to independently drive the corresponding sealing cap 14 to move up and down, so as to realize the opening and sealing of the sampling bottle 11.

[0035] The floating platform 4 integrates a moving component 5 and a rotating component 6. The moving component 5 is used to drive the support column 1 and the sampling bottle 11 below it to move up and down vertically to adjust the sampling depth. The rotating component 6 is used to drive the support plate 2 and the sampling bottle 11 to rotate, switching the working position of different sampling bottles 11. The floating platform 4 floats on the water surface, providing a stable support benchmark for the entire device. When the moving component 5 moves, it can drive the support column 1 and the sampling bottle 11 to move up and down as a whole, accurately adjusting to the target sampling depth. When the rotating component 6 moves, it transmits power through the rotating sleeve 12, driving the support plate 2, the fixed plate 13 and the sampling bottle 11 to rotate synchronously, so that the unsampled sampling bottle 11 moves to the sampling position.

[0036] refer to Figure 1 , Figure 2 and Figure 3The lifting assembly 3 includes a vertically arranged first threaded sleeve 31 and a first screw 32 threadedly connected to the first threaded sleeve 31. The first threaded sleeve 31 is a tubular structure with internal threads, and its bottom end passes through the support plate 2 and is rotatably connected to the support plate 2, ensuring that the first threaded sleeve 31 can rotate freely around its own axis. The bottom end of the first screw 32 is fixedly connected to the center position of the upper surface of the sealing cover 14. When the first threaded sleeve 31 rotates, the first screw 32 can be driven to rise and fall vertically through the threaded transmission. Two symmetrically arranged sliding rods 15 are also fixedly provided on the upper surface of the sealing cover 14. The sliding rods 15 are arranged parallel to the first threaded sleeve 31, and the top end of the sliding rods 15 passes through the support plate 2 and is slidably connected to the support plate 2. The sliding rods 15 adopt a smooth round rod structure, which is precisely matched with the through hole of the support plate 2, which can effectively limit the rotation of the sealing cover 14, ensuring that its lifting process is smooth and accurately aligned with the mouth of the sampling bottle 11.

[0037] When the first threaded sleeve 31 rotates clockwise, the first screw 32, driven by the threaded transmission, moves the sealing cap 14 upward, opening the mouth of the sampling bottle 11 to facilitate the inflow of water sample. When the first threaded sleeve 31 rotates counterclockwise, the first screw 32 moves the sealing cap 14 downward until it fits against the mouth of the sampling bottle 11, achieving a seal and preventing water sample leakage or mixing. The slide rod 15 slides along the through hole of the support plate 2 throughout the lifting and lowering process, providing guidance for the sealing cap 14 and preventing it from shifting or tilting.

[0038] refer to Figure 1 , Figure 2 and Figure 3 A first gear 16 is fixedly fitted onto the upper end of the first threaded sleeve 31. The first gear 16 is a spur gear and is coaxially arranged with the first threaded sleeve 31. A first arc-shaped rack 17 and a second arc-shaped rack 18 are fixedly connected to one side of the support column 1. Both the first arc-shaped rack 17 and the second arc-shaped rack 18 are arc-shaped structures made of high-strength wear-resistant material, and their curvature is adapted to the movement trajectory of the first gear 16. The first arc-shaped rack 17 and the second arc-shaped rack 18 are located on opposite sides of the first gear 16 and are staggered relative to each other. The tooth surfaces of both are meshed with the first gear 16.

[0039] When the support plate 2 drives the first gear 16 to rotate circumferentially with the support column 1, the first gear 16 can mesh with the first arc-shaped rack 17 and the second arc-shaped rack 18 in sequence to achieve self-rotation drive. When the support plate 2 drives the first gear 16 to rotate to the position of the first arc-shaped rack 17, the first gear 16 and the first arc-shaped rack 17 begin to mesh. As the support plate 2 continues to rotate, the first arc-shaped rack 17 drives the first gear 16 to rotate through tooth surface meshing, thereby driving the first threaded sleeve 31 to rotate, causing the sealing cover 14 to open upward. When the support plate 2 drives the first gear 16 to rotate to the position of the second arc-shaped rack 18, the first gear 16 meshes with the second arc-shaped rack 18. Under the guidance of the second arc-shaped rack 18, the first gear 16 rotates in the opposite direction, driving the first threaded sleeve 31 to rotate in the opposite direction, causing the sealing cover 14 to close downward, completing the sealing action after sampling.

[0040] refer to Figure 1 , Figure 2 and Figure 3 An annular plate 21 is provided above the support plate 2. The annular plate 21 is sleeved on the outside of the support column 1, coaxially arranged with the support column 1, and does not contact the support column 1. The annular plate 21 and the support plate 2 are fixedly connected by multiple evenly distributed connecting rods 22. The connecting rods 22 are vertically arranged rods to ensure that the annular plate 21 rotates synchronously with the support plate 2. A set of fixing components 7 is provided on the annular plate 21 corresponding to each position of the first gear 16, which is used to temporarily fix or release the first gear 16 to prevent the sealing cover 14 from shifting due to accidental rotation of the first gear 16 when not in operation.

[0041] The annular plate 21 rotates synchronously with the support plate 2. When the fixing component 7 is in the locked state, the first gear 16 can be fixed to prevent it from rotating at will, ensuring that the sealing cover 14 is kept in the closed or open state. When it is necessary to drive the first gear 16 to rotate, the fixing component 7 is unlocked, allowing the first gear 16 to rotate under the action of the rack, thereby realizing the lifting and lowering control of the sealing cover 14.

[0042] refer to Figure 1 , Figure 2 and Figure 3The upper surface of the first gear 16 has multiple uniformly spaced fixing grooves 161 along its circumference. Each fixing groove 161 is a circular recess structure. The fixing assembly 7 includes a fixing rod 71 and a first spring 72. The fixing rod 71 is a vertically arranged round rod that passes through and slidably connects to the annular plate 21. The bottom end of the fixing rod 71 can be inserted into the corresponding fixing groove 161 to lock the first gear 16. A horizontally arranged auxiliary plate 711 is fixed to the upper end of the fixing rod 71. The auxiliary plate 711 is a circular or square plate used to connect the first spring 72 and facilitate force application. The first spring 72 is positioned between the auxiliary plate 711 and the annular plate 21, and is sleeved on the outside of the fixing rod 71. The first spring 72 is always in a stretched state, providing a downward preload to the fixing rod 71 to ensure stable insertion into the fixing groove 161 when no external force is applied. A pushing assembly 8 is provided on the support column 1 at the position corresponding to the fixing assembly 7 to push the fixing rod 71 upwards, thus separating the fixing rod 71 from the fixing groove 161.

[0043] When no external force is applied, the tension of the first spring 72 causes the fixed rod 71 to move downward, and its bottom end is inserted into the fixed groove 161 of the first gear 16, locking the first gear 16 and preventing it from rotating; when the pushing component 8 applies an upward force, it causes the fixed rod 71 to move upward against the tension of the first spring 72, and its bottom end disengages from the fixed groove 161, releasing the lock on the first gear 16. At this time, the first gear 16 can rotate freely under the drive of the rack.

[0044] refer to Figure 1 , Figure 2 and Figure 3 The pushing component 8 includes a guide plate 81 and a push plate 82. Multiple guide plates 81 are provided, each fixedly connected to an auxiliary plate 711 of each fixed rod 71. One side of each guide plate 81 has an inclined surface structure. The push plate 82 is fixedly mounted on one side of the support column 1, and the side of the push plate 82 facing the guide plate 81 also has an inclined surface that matches the inclined surface of the guide plate 81.

[0045] When the support plate 2 drives the guide plate 81 to rotate with the support column 1 to the position of the push plate 82, the inclined surfaces of the two contact each other and generate a squeezing force, pushing the guide plate 81 and the fixing rod 71 to move upward, so that the bottom end of the fixing rod 71 disengages from the fixing groove 161, releasing the lock on the first gear 16. As the support plate 2 rotates, the guide plate 81 gradually approaches the push plate 82, and the inclined surfaces of the two first contact and gradually fit together. During the relative movement, the push plate 82 applies an upward pushing force to the guide plate 81 through the inclined surface. The guide plate 81 drives the auxiliary plate 711 and the fixing rod 71 to slide upward, realizing the separation of the fixing rod 71 from the fixing groove 161. After sampling is completed, the support plate 2 continues to rotate, the guide plate 81 and the push plate 82 gradually separate, and the fixing rod 71 resets under the tension of the first spring 72, re-inserting into the fixing groove 161, and locking the first gear 16 again.

[0046] refer to Figure 1 , Figure 2 and Figure 3 A rotating tube 41 is rotatably connected to the lower surface of the floating platform 4. The rotating tube 41 is an annular tubular structure, sleeved on the outside of the support column 1. A gap is left between its inner wall and the outer wall of the support column 1 to avoid affecting the lifting and lowering movement of the support column 1. A linkage rod 42 is fixedly connected to the side wall of the rotating tube 41. The end of the linkage rod 42 away from the rotating tube 41 is fixedly connected to the upper surface of the support plate 2 to realize the synchronous rotation of the rotating tube 41 and the support plate 2. The rotating assembly 6 includes a second gear 61 and a third gear 62. A rotating rod 43 is vertically provided on one side of the support column 1. The rotating rod 43 passes through the floating platform 4 and is rotatably connected to the floating platform 4 through a bearing. The bottom end of the rotating rod 43 is fixedly sleeved with the second gear 61. The third gear 62 is fixedly sleeved on the outside of the rotating tube 41 and meshes with the second gear 61 to form a gear transmission mechanism.

[0047] When the operator rotates the rotating rod 43, the rotating rod 43 drives the second gear 61 at the bottom to rotate. The second gear 61 drives the third gear 62 and the rotating tube 41 to rotate through meshing. The rotating tube 41 transmits power to the support plate 2 through the linkage rod 42, which drives the support plate 2, the fixed plate 13 and the sampling bottle 11 to rotate synchronously, realizing the switching of the sampling bottle 11. The structure transmission is stable and the positioning is accurate.

[0048] refer to Figure 1 , Figure 2 and Figure 3 A horizontally positioned rotating plate 44 is fixed to the upper end of the rotating rod 43. The rotating plate 44 is a circular flat plate structure, which facilitates rotation by the operator. Multiple positioning pointers 45 are evenly distributed on the upper surface of the rotating plate 44. The number of positioning pointers 45 is the same as the number of sampling bottles 11, and each positioning pointer 45 corresponds one-to-one with each sampling bottle 11. A vertically upward positioning rod 46 is fixed on the floating platform 4 at the position corresponding to the rotating plate 44. The positioning rod 46 is a cylindrical rod, and a conspicuous mark can be set at its top. By observing the relative position of the positioning pointers 45 and the positioning rod 46, the current corresponding sampling bottle 11 can be intuitively determined.

[0049] When the operator rotates the rotating plate 44, the positioning pointer 45 rotates synchronously with the rotating plate 44. When a positioning pointer 45 is aligned with the positioning rod 46, the corresponding sampling bottle 11 moves to the sampling position, which makes it easier for the operator to accurately control the switching of the sampling bottle 11 and avoid operational errors.

[0050] refer to Figure 1 , Figure 2 and Figure 3The moving component 5 includes a vertically arranged second threaded sleeve 51 and a second screw 52 threadedly connected to the second threaded sleeve 51. The second threaded sleeve 51 is a tubular structure with internal threads, and its bottom end is rotatably connected to the upper surface of the floating platform 4 through a bearing to ensure stable rotation of the second threaded sleeve 51. The bottom end of the second screw 52 passes through the floating platform 4 and is fixedly connected to the upper end of the support column 1. When the second threaded sleeve 51 rotates, it can drive the second screw 52 and the support column 1 to rise and fall vertically through threaded transmission. A horizontally arranged guide plate 47 is fixedly provided at the upper end of the second screw 52. The guide plate 47 is a square or circular plate. A telescopic rod 48 is provided between the guide plate 47 and the floating platform 4. The telescopic rod 48 is a telescopic sleeve structure, and its two ends are fixedly connected to the guide plate 47 and the floating platform 4 respectively to limit the rotation of the second screw 52 and ensure smooth lifting and lowering of the support column 1.

[0051] When the operator rotates the second threaded sleeve 51, the second screw 52 drives the support column 1 and the sampling bottle 11 below to move vertically under the action of the thread transmission. The telescopic rod 48 extends and retracts synchronously to guide the second screw 52, ​​prevent it from rotating, and ensure that the support column 1 always remains vertical, so as to achieve precise adjustment of the sampling depth.

[0052] refer to Figure 1 , Figure 2 and Figure 3 One side of the second threaded sleeve 51 is provided with a support plate 9 that is fixedly connected to the floating platform 4. An operating lever 91 is provided on the support plate 9, horizontally positioned and passing through the support plate 9, and rotatably connected to the support plate 9 via bearings. A handwheel 92 is fixedly provided at one end of the operating lever 91; the handwheel 92 is a circular rotating wheel structure, convenient for the operator to grip and rotate. A first bevel gear 93 is fixedly provided at the other end of the operating lever 91, and a second bevel gear 94 is fixedly fitted onto the upper end of the second threaded sleeve 51. The first bevel gear 93 and the second bevel gear 94 mesh with each other, forming a bevel gear transmission mechanism to realize the conversion of the direction of the operating force.

[0053] When the operator turns the handwheel 92, it drives the operating lever 91 and the first bevel gear 93 to rotate. The first bevel gear 93 drives the second bevel gear 94 and the second threaded sleeve 51 to rotate through meshing. In turn, the threaded transmission drives the second screw 52 and the support column 1 to rise and fall. The bevel gear transmission mechanism changes the direction of force transmission, making the operation more labor-saving and convenient.

[0054] The implementation principle of the environmental testing water quality sampling device in this application embodiment is as follows: After the device is placed in the target water area, the floating platform 4 provides stable support. The operator rotates the handwheel 92 to drive the second threaded sleeve 51 to rotate through the bevel gear transmission, which drives the second screw 52, ​​support column 1 and sampling bottle 11 to descend to the predetermined depth. Then, the rotating plate 44 is rotated, and the sampling bottle 11 is driven to rotate through the gear and linkage rod 42. The sampling position is determined by aligning the positioning pointer 45 with the positioning rod 46. During the rotation, the guide plate 81 and the push plate 82 cooperate to unlock the first gear 16. The first gear 16 meshes with the first arc-shaped rack 17 and rotates. The sealing cover 14 is opened through the threaded sleeve and screw transmission, and the water sample is injected to complete the sampling. After sampling, the rotating plate 44 is rotated again. The first gear 16 meshes with the second arc-shaped rack 18 and rotates in the opposite direction. The sealing cover 14 is closed and the fixing rod 71 is reset and locked. By repeating the above operation, the device can achieve independent sampling at different depths and positions through multiple sets of sampling bottles 11, avoiding water sample mixing and improving the accuracy and representativeness of the test.

[0055] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A water quality sampling device for environmental testing, characterized in that: The system includes a support column (1) and sampling bottles (11). The support column (1) is vertically arranged, and a rotating sleeve (12) is rotatably fitted at the bottom end of the support column (1). A fixing plate (13) is fixedly fitted at the bottom end of the rotating sleeve (12). Multiple sampling bottles (11) are provided and evenly installed on the fixing plate (13). A sealing cap (14) is correspondingly provided above each sampling bottle (11). A support plate (2) is fixedly fitted at the upper end of the rotating sleeve (12). The plate (2) is provided with multiple sets of lifting components (3), each set of lifting components (3) corresponds to each of the sealing covers (14) and is used to drive the corresponding sealing covers (14) to move up and down; a floating platform (4) is provided above the support column (1), and a moving component (5) and a rotating component (6) are provided on the floating platform (4). The moving component (5) is used to drive the support column (1) to move in the vertical direction, and the rotating component (6) is used to drive the support plate (2) to rotate.

2. The environmental testing water quality sampling device according to claim 1, characterized in that: The lifting assembly (3) includes a vertically arranged first threaded sleeve (31) and a first screw (32) threadedly connected to the first threaded sleeve (31). The bottom end of the first threaded sleeve (31) passes through the support plate (2) and is rotatably connected to the support plate (2). The bottom end of the first screw (32) is fixedly connected to the sealing cover (14). A slide rod (15) is fixedly provided on the upper surface of the sealing cover (14). The slide rod (15) is parallel to the first threaded sleeve (31) and passes through the support plate (2) and is slidably connected to the support plate (2).

3. The environmental testing water quality sampling device according to claim 2, characterized in that: A first gear (16) is fixedly sleeved on the first threaded sleeve (31). A first arc-shaped rack (17) and a second arc-shaped rack (18) are connected to one side of the support column (1). The first arc-shaped rack (17) and the second arc-shaped rack (18) are respectively located on opposite sides of the first gear (16) and are offset from each other. The first arc-shaped rack (17) and the second arc-shaped rack (18) are meshed with the first gear (16).

4. The environmental testing water quality sampling device according to claim 3, characterized in that: An annular plate (21) is provided above the support plate (2). The annular plate (21) is sleeved on the outside of the support column (1), and a connecting rod (22) is fixedly connected between the annular plate (21) and the support plate (2). Multiple sets of fixing components (7) are provided on the annular plate (21). Each set of fixing components (7) corresponds to each of the first gears (16) and is used to fix or separate from the corresponding first gear (16).

5. The environmental testing water quality sampling device according to claim 4, characterized in that: The first gear (16) has a fixing groove (161) on its upper surface; the fixing component (7) includes a fixing rod (71) and a first spring (72). The fixing rod (71) passes through the annular plate (21) and is slidably connected to the annular plate (21). The fixing rod (71) is inserted into and adapted to the fixing groove (161). An auxiliary plate (711) is fixedly provided at the upper end of the fixing rod (71). The first spring (72) is fixed between the auxiliary plate (711) and the annular plate (21) and sleeved on the outside of the fixing rod (71). The first spring (72) is always in a stretched state. A pushing component (8) for pushing the fixing rod (71) to move upward is provided at the support column (1).

6. The environmental testing water quality sampling device according to claim 5, characterized in that: The pushing component (8) includes a guide plate (81) and a push plate (82); the guide plate (81) is provided in multiple ways and is fixedly connected to the corresponding fixed rod (71); the push plate (82) is fixedly provided on one side of the support column (1), and one side of the push plate (82) and one side of the guide plate (81) are provided with mutually fitting inclined surfaces.

7. The environmental testing water quality sampling device according to claim 4, characterized in that: The lower surface of the floating platform (4) is rotatably connected to a rotating tube (41), which is sleeved on the outside of the support column (1). A linkage rod (42) is connected to the side wall of the rotating tube (41), and the end of the linkage rod (42) away from the rotating tube (41) is fixedly connected to the support plate (2). The rotating assembly (6) includes a second gear (61) and a third gear (62). A rotating rod (43) is vertically provided on one side of the support column (1). The rotating rod (43) passes through the floating platform (4) and is rotatably connected to the floating platform (4). The second gear (61) is fixedly installed at the bottom end of the rotating rod (43). The third gear (62) is fixedly sleeved on the outside of the rotating tube (41), and the second gear (61) meshes with the third gear (62).

8. The environmental testing water quality sampling device according to claim 7, characterized in that: The upper end of the rotating rod (43) is fixedly provided with a rotating plate (44), and a plurality of positioning pointers (45) are evenly provided on the upper surface of the rotating plate (44), and each positioning pointer (45) corresponds to each sampling bottle (11); a positioning rod (46) is fixedly provided on the floating platform (4).

9. The environmental testing water quality sampling device according to claim 1, characterized in that: The moving component (5) includes a vertically arranged second threaded sleeve (51) and a second screw (52) threadedly connected to the second threaded sleeve (51); the bottom end of the second threaded sleeve (51) is rotatably connected to the upper surface of the floating platform (4); the bottom end of the second screw (52) passes through the floating platform (4) and is fixedly connected to the upper end of the support column (1); a guide plate (47) is fixedly provided at the upper end of the second screw (52), and a telescopic rod (48) is provided between the guide plate (47) and the floating platform (4).

10. The environmental testing water quality sampling device according to claim 9, characterized in that: The second threaded sleeve (51) has a support plate (9) fixedly connected to the floating platform (4) on one side; the support plate (9) has an operating rod (91) which passes through the support plate (9) and is rotatably connected to the support plate (9); a handwheel (92) is fixedly provided at one end of the operating rod (91) and a first bevel gear (93) is fixedly provided at the other end; a second bevel gear (94) is fixedly sleeved on the second threaded sleeve (51) and the first bevel gear (93) meshes with the second bevel gear (94).

Images