In-situ water pollution detection sampling device

Abstract

The application provides an in-situ water pollution detection sampling device, and relates to the technical field of water sampling, which comprises a fixing frame, a sampling unit installed on the fixing frame, an opening and closing unit installed on the sampling unit, and an uncovering unit installed on the opening and closing unit; the sampling unit comprises a lifting component and a winding component; the lifting component comprises a telescopic rod and a sampling bottle; the upper portion of the telescopic rod is fixedly connected with the fixing frame; the bottom end of the telescopic rod is fixedly connected with a vertical rod; the bottom end of the vertical rod is fixedly connected with a counterweight cone; and a guide pipe is coaxially arranged on the outer side of the vertical rod; the application realizes the rotation and position change of the bracket and the sampling bottle; when lowering, the sampling bottle initially located on the inner side of a ship / platform is rotated to the outer side of the water area; when recovering, the sampling bottle is rotated and reset to the inner side of the ship / platform; the operator does not need to bend over and approach the shipboard or the water edge, and can complete the sampling bottle taking and placing operation in a safe position on the inner side of the ship / platform, thereby avoiding the risk of falling into the water caused by the operator holding a rope and approaching the water edge for operation in the traditional rope lifting sampling mode.

Description

Technical Field

[0001] This invention relates to the technical field of water sampling, and more particularly to an in-situ water pollution detection and sampling device. Background Technology

[0002] Water pollution detection is a crucial part of water quality monitoring and ecological environmental protection. The accuracy of in-situ water sampling directly determines the reliability of the test results. Currently, commonly used water pollution detection sampling methods mainly include flexible rope suspended samplers and electric or pneumatically driven water sampling equipment.

[0003] When using the flexible rope suspended sampler, the operator needs to hold the rope close to the ship's side or the water's edge and lower the sampling bottle to the target depth. This method has the following drawbacks: First, the operator needs to bend over above the water surface, which poses a significant risk of falling into the water. Second, after the sampling bottle is retrieved, the operator needs to unscrew the cap of each bottle to take out the water sample. When sampling at different depths in the same water area, it is often necessary to unscrew multiple caps step by step, which is cumbersome.

[0004] While electric or pneumatic water sampling equipment can achieve automatic triggering, it relies on electric or pneumatic control components, resulting in higher costs and requirements for on-site power or gas supply conditions, making it difficult to promote and apply in scenarios with scarce power supply, such as rivers, lakes, and reservoirs in the wild. Therefore, it is necessary to provide an in-situ water pollution detection and sampling device to solve the above-mentioned technical problems. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides an in-situ water pollution detection and sampling device.

[0006] This invention provides an in-situ water pollution detection and sampling device, comprising a fixed frame, a sampling unit mounted on the fixed frame, an opening and closing unit mounted on the sampling unit, and a cap opening unit mounted on the opening and closing unit; the sampling unit includes a lifting component and a winding component; the lifting component includes a telescopic rod and a sampling bottle, the upper part of the telescopic rod is fixedly connected to the fixed frame, a vertical rod is fixedly connected to the bottom end of the telescopic rod, a counterweight cone is fixedly connected to the bottom end of the vertical rod, a guide tube is coaxially arranged on the outer side of the vertical rod, a rotating sleeve is rotatably sleeved on the outer side of the vertical rod, a horizontal rod is fixedly connected to one side of the rotating sleeve, a guide wheel is rotatably sleeved on the outer side of the horizontal rod, a bracket is fixedly connected to one end of the horizontal rod, a plurality of horizontal support bars are fixedly connected at equal intervals from top to bottom on one side of the bracket, and a tray for supporting the sampling bottle is fixedly connected to one end of each horizontal support bar.

[0007] Preferably, the guide tube has a notch, a spiral guide groove, and a vertical guide groove extending through its sidewall. The guide tube is fixedly connected to a fixed frame. The top end of the spiral guide groove communicates with the bottom end of the vertical guide groove, and the bottom end of the spiral guide groove communicates with the top end of the notch. The notch, spiral guide groove, and vertical guide groove are all adapted to guide wheels. The guide wheels roll sequentially within the notch, spiral guide groove, and vertical guide groove. The sampling bottles and trays are arranged in a one-to-one correspondence. A pull rope is fixedly connected to the inner bottom end of the telescopic rod. The telescopic rod consists of multiple vertical tubes that slide and fit together sequentially. The diameter of the multiple vertical tubes decreases sequentially to achieve telescopic movement. The pull rope is movably inserted inside the multiple vertical tubes, and one end of the pull rope is fixedly connected to the inner bottom end of the bottommost vertical tube.

[0008] Preferably, a first torsion spring is sleeved on the outer side of the vertical rod. The first torsion spring is located on the lower inner side of the rotating sleeve. One end of the first torsion spring is fixedly connected to the outer wall of the vertical rod, and the other end of the first torsion spring is fixedly connected to the lower inner wall of the rotating sleeve. A fixing block is fixedly connected to the other side of the rotating sleeve. A limiting plate corresponding to the fixing block is fixedly connected to the outer side of the vertical rod. The limiting plate is located below the horizontal rod. A placement groove adapted to the bottom end of the sampling bottle is opened on the top of the tray. The bottom end of the sampling bottle is inserted into the placement groove of the corresponding tray.

[0009] Preferably, the winding component includes a winding reel rotatably connected to a fixed frame. One end of the winding reel is fixedly connected to a worm gear, and a worm is rotatably connected to the fixed frame. The worm meshes with the worm gear, and one end of the worm is fixedly connected to a rotating handle. The other end of the pull rope extends out of the telescopic rod and is wound into the winding groove of the winding reel. A connecting frame is fixedly connected to the outer wall of the vertical tube at the top of the telescopic rod, and a first pulley is rotatably connected to the connecting frame. The pull rope passes through the pulley groove of the first pulley.

[0010] Preferably, the opening and closing unit includes a sample injection component, a control component, and an adjustment component; the top of the sampling bottle is open, and the sample injection component includes a cap for sealing the top opening of the sampling bottle, the cap corresponding to the sampling bottle one by one, and the cap sealingly covering the top opening of the sampling bottle.

[0011] Preferably, the opening unit includes a transmission component and a resetting component; the transmission component includes a transmission bracket, which is vertically slidably connected to the bracket, a horizontal connecting strip is fixedly connected to one side of the cover, one end of the horizontal connecting strip is fixedly connected to the side wall of the transmission bracket, an avoidance groove is vertically opened through the horizontal connecting strip, a rack is fixedly connected to one side of the transmission bracket, a connecting shaft is fixedly connected to the bracket wall, a gear is rotatably sleeved on the outside of the connecting shaft, a diagonal rod is fixedly connected to the upper part of the gear, and the gear meshes with the rack.

[0012] Preferably, the reset component includes a pressure wheel rotatably connected to the top of the inclined rod, a baffle plate is fixedly connected to the frame wall of the bracket, the inclined rod abuts against the baffle plate, a second torsion spring is sleeved on the outside of the connecting shaft, one end of the second torsion spring is fixedly connected to the inclined rod, the other end of the second torsion spring is fixedly connected to the frame wall of the bracket, and a limiting horizontal plate is fixedly connected to the fixing frame, the limiting horizontal plate being correspondingly arranged with the guide wheel.

[0013] Preferably, the sample injection component further includes a vertical pull rod, which is slidably disposed within an avoidance groove. A water inlet pipe is fixedly connected to the cover. A first opening is provided at one end and the upper part of the water inlet pipe, a second opening is provided at the other end of the water inlet pipe, and a third opening communicating with the inside of the sampling bottle is provided at the lower part of the water inlet pipe. A valve core is slidably and sealed on the inner side of the water inlet pipe. A horizontal pull rod is fixedly connected to one end of the valve core, and one end of the horizontal pull rod slides through the water inlet pipe and is fixedly connected to the vertical pull rod.

[0014] Preferably, the control component includes a float and a horizontal slide bar. The horizontal slide bar is laterally slidably connected to the transmission bracket. One end of the horizontal slide bar is fixedly connected to the side wall of the vertical pull rod, and the other end of the horizontal slide bar is fixedly connected to a connecting rope. A fixing strip is fixedly connected to the side wall of the transmission bracket. One end of the fixing strip is rotatably connected to two symmetrically arranged second pulleys. The connecting rope passes through the pulley groove between the two second pulleys. A spring is sleeved on the outer side of the horizontal slide bar. One end of the spring is fixedly connected to the side wall of the transmission bracket, and the other end of the spring is fixedly connected to the side wall of the vertical pull rod.

[0015] Preferably, the adjusting component includes adjusting holes, and a plurality of adjusting holes are equally spaced along the length of the connecting rope. A threaded rod is fixedly connected to the lower part of the float. A first clamping piece is fixedly sleeved on the outer side of the threaded rod. A second clamping piece symmetrically arranged with the first clamping piece is also movably sleeved on the outer side of the threaded rod. A handle nut is threadedly sleeved on the outer side of the threaded rod.

[0016] Compared with related technologies, the in-situ water pollution detection and sampling device provided by the present invention has the following beneficial effects:

[0017] 1. This invention achieves rigid vertical extension and retraction through the combined gravity traction of the telescopic rod, the bottom vertical rod, and the counterweight cone, ensuring the stability of the sampling bottle during lowering. Simultaneously, through the sequentially connected notches, spiral guide grooves, and vertical guide grooves on the guide tube, along with the rolling guidance of the guide wheel at the end of the horizontal rod on the rotating sleeve, and the elastic reset of the first torsion spring and the anti-rotation limit of the limiting plate, the bracket and sampling bottle can be rotated and repositioned during the extension and retraction of the telescopic rod: during lowering, the sampling bottle initially located inside the ship / platform is rotated to the outer water area; during retrieval, the sampling bottle is... Rotating back to the inside of the ship / platform allows operators to retrieve and place sampling bottles from a safe position inside the ship / platform without having to bend over close to the ship's side or the water's edge. This avoids the risk of falling into the water that occurs in traditional rope-suspended sampling methods where personnel need to hold the rope close to the water's edge. At the same time, the rope can be stably retracted and extended by rotating the handle, and the meshing structure of the worm gear and worm has a self-locking characteristic, which can effectively prevent the reel from reversing due to gravity, ensuring the controllability of the lowering and retrieval process and further improving the safety and stability of the device operation.

[0018] 2. With the cooperation of the sampling component, control component, and adjustment component, this invention allows for the adjustment and locking of the float's trigger depth by using a connecting rope with scale lines and equidistant adjustment holes in the adjustment component, along with the clamping and fixing structure of the bottom threaded rod of the float, the first clamping plate, the second clamping plate, and the handle nut. This adapts to the sampling needs of different target water layers. Through the buoyancy traction of the float in the control component, combined with the transmission of the connecting rope and the second pulley, and the elastic reset structure of the horizontal slide rod and the spring, the sampling component can be automatically triggered to open when the sampling bottle reaches the target depth. When the sampling bottle reaches the preset depth, the connecting rope is fully straightened and pulls the horizontal slide rod to slide horizontally. This, in turn, drives the valve core to slide along the inner cavity of the water inlet pipe through the vertical and horizontal pull rods, releasing the blockage of the third opening. This allows the in-situ water sample at the target depth to flow into the sampling bottle through the first opening, the inner cavity of the water inlet pipe, and the third opening, completing the in-situ sampling.

[0019] 3. This invention, through the cooperation of the transmission component and the reset component, can automatically open all sampling bottles at the end of the device's retrieval process, eliminating the need for manual unscrewing of each bottle cap and simplifying the operation. Specifically, through the vertical sliding cooperation between the transmission bracket and the support, all caps are fixedly connected to the transmission bracket via a horizontal connecting strip. With the meshing transmission of gears and racks, and the pressure triggering of the pressure wheel and the limiting horizontal plate in the reset component, as well as the elastic reset structure of the second torsion spring, the pressure wheel is continuously pressed by the limiting horizontal plate at the end of the device's retrieval stroke, driving the gear to rotate around the connecting shaft. This, in turn, drives the transmission bracket to slide upward along the support via the rack, moving all caps upward and achieving automatic opening of multiple sets of sampling bottles, making it convenient for testing personnel to remove the sampling bottles for testing.

[0020] 4. This invention can collect water samples from multiple depths in the same vertical direction at once, making the operation more convenient; this invention adopts a purely mechanical structure and does not require a power supply, making it suitable for field scenarios where power supply is scarce. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the in-situ water pollution detection and sampling device provided by the present invention.

[0022] Figure 2 Another perspective view of the in-situ water pollution detection and sampling device;

[0023] Figure 3 This is a cross-sectional view of the in-situ water pollution detection and sampling device of the present invention;

[0024] Figure 4 This is an enlarged view of point A in this invention;

[0025] Figure 5 This is a partial sectional view of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the guide tube in this invention;

[0027] Figure 7 This is a schematic diagram of the structure at the crossbar in this invention;

[0028] Figure 8 This is a schematic diagram of the bracket structure in this invention;

[0029] Figure 9 This is a schematic diagram of the rack structure in this invention;

[0030] Figure 10 This is a schematic diagram of the sampling bottle being removed from the tray in this invention;

[0031] Figure 11 This is a schematic diagram of the gear structure in this invention;

[0032] Figure 12 This is a cross-sectional view of the sampling bottle in this invention;

[0033] Figure 13 This is a partial structural diagram of the adjusting component in this invention;

[0034] Figure 14 This is an exploded view of the adjusting component in this invention.

[0035] The diagram labels are as follows: 1. Fixed frame; 2. Sampling unit; 21. Lifting component; 211. Telescopic rod; 212. Vertical rod; 213. Counterweight cone; 214. Horizontal rod; 215. Bracket; 2151. Horizontal support bar; 216. Tray; 217. Sampling bottle; 218. Guide tube; 2181. Notch; 2182. Spiral guide groove; 2183. Vertical guide groove; 219. Pull rope; 21 10. Rotating sleeve; 2111. Guide wheel; 2112. Fixing block; 2113. Limiting plate; 2114. First torsion spring; 22. Rewinding component; 221. Rewinding reel; 222. Worm gear; 223. Worm; 224. Rotating handle; 225. Connecting frame; 226. First pulley; 3. Opening and closing unit; 31. Sample feeding component; 311. Cover; 312. Water inlet pipe; 3121. First opening; 3122, Second opening; 3123, Third opening; 313, Valve core; 314, Horizontal pull rod; 315, Vertical pull rod; 32, Control component; 321, Float; 322, Horizontal slide rod; 323, Spring; 324, Connecting rope; 325, Fixing strip; 326, Second pulley; 33, Adjusting component; 331, Handle nut; 332, Adjusting hole; 333, Threaded rod; 334, First clamping piece; 335, Second clamping piece; 4, Opening unit; 41, Transmission component; 411, Transmission bracket; 412, Rack; 413, Horizontal connecting strip; 4131, Avoidance groove; 414, Connecting shaft; 415, Gear; 416, Diagonal rod; 42, Reset component; 421, Pressure wheel; 422, Baffle; 423, Second torsion spring; 424, Limiting horizontal plate. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] Example 1

[0038] Please refer to the following: Figures 1 to 8An in-situ water pollution detection and sampling device includes a fixed frame 1, a sampling unit 2 mounted on the fixed frame 1, an opening and closing unit 3 mounted on the sampling unit 2, and a cap opening unit 4 mounted on the opening and closing unit 3. The sampling unit 2 includes a lifting component 21 and a winding component 22. The lifting component 21 includes a telescopic rod 211 and a sampling bottle 217. A counterweight is fixedly connected to the bottom of the sampling bottle 217. The mass of the counterweight satisfies the following condition: in the empty bottle state, the total weight of the sampling bottle 217 and the counterweight is greater than the maximum buoyancy it experiences when fully submerged. The upper part of the telescopic rod 211 is fixedly connected to the fixed frame 1, and a vertical rod 212 is fixedly connected to the bottom end of the telescopic rod 211. A counterweight cone 213 is fixedly connected to the end of the vertical rod 212. A guide tube 218 is coaxially arranged on the outer side of the vertical rod 212. A notch 2181, a spiral guide groove 2182, and a vertical guide groove 2183 are opened through the side wall of the guide tube 218. A rotating sleeve 2110 is rotatably sleeved on the outer side of the vertical rod 212. A horizontal rod 214 is fixedly connected to one side of the rotating sleeve 2110. A guide wheel 2111 is rotatably sleeved on the outer side of the horizontal rod 214. A bracket 215 is fixedly connected to one end of the horizontal rod 214. Several horizontal support bars 2151 are fixedly connected at equal intervals from top to bottom on one side of the bracket 215. A tray 216 for supporting the sampling bottle 217 is fixedly connected to one end of the horizontal support bar 2151.

[0039] In the above, the entire device is fixedly installed on the sampling vessel or working platform by the fixing frame 1. The lifting component 21 and the winding component 22 in the sampling unit 2 cooperate to realize the smooth lowering and retrieval of the sampling bottle 217. Through the rigid extension and retraction of the telescopic rod 211, the rolling cooperation between the guide tube 218 and the guide wheel 2111, and the several horizontal support bars 2151 and the tray 216 fixedly connected from top to bottom on the bracket 215, the stable bearing and vertical guidance of multiple sets of sampling bottles 217 can be realized, providing a reliable structural foundation for subsequent in-situ water sample collection.

[0040] Furthermore, the guide tube 218 is fixedly connected to the fixed frame 1. The top end of the spiral guide groove 2182 is connected to the bottom end of the vertical guide groove 2183, and the bottom end of the spiral guide groove 2182 is connected to the top end of the notch 2181. The notch 2181, the spiral guide groove 2182, and the vertical guide groove 2183 are all adapted to the guide wheel 2111. The guide wheel 2111 rolls sequentially within the notch 2181, the spiral guide groove 2182, and the vertical guide groove 2183. During the complete stroke of the guide wheel 2111 rolling from the top end to the bottom end along the spiral guide groove 2182, it can drive the rotating sleeve 2110 to rotate around the vertical rod 212. The axis completes a 180° rotation; sampling bottles 217 and trays 216 are set one-to-one; a pull rope 219 is fixedly connected to the inner bottom end of the telescopic rod 211; the telescopic rod 211 is composed of multiple vertical tubes that are slidably connected in sequence, and the diameter of the multiple vertical tubes decreases in sequence to achieve telescopic extension; the pull rope 219 is movably inserted inside the multiple vertical tubes, and one end of the pull rope 219 is fixedly connected to the inner bottom end of the bottommost vertical tube, and the other end of the pull rope 219 extends out of the telescopic rod 211 and is used to connect with the winding component 22; when the winding component 22 releases the pull rope 219, the telescopic rod 211 extends downward under the action of gravity.

[0041] In the above-mentioned configuration, the telescopic rod 211, formed by multiple vertical tubes of successively decreasing diameters, is rigidly extended and retracted vertically by gravity traction from the fixedly connected vertical rod 212 and the counterweight cone 213, ensuring the stability and positional accuracy of the sampling bottle 217 during lowering. Simultaneously, the notch 2181, spiral guide groove 2182, and vertical guide groove 2183 through the guide tube 218 sequentially roll in cooperation with the guide wheel 2111, allowing for extension... During the extension and retraction of the telescopic rod 211, the bracket 215 and the sampling bottle 217 are automatically rotated 180° and repositioned. The pull rope 219 is movably inserted inside multiple vertical tubes, and one end of the pull rope 219 is fixedly connected to the inner bottom of the bottommost vertical tube, while the other end extends out of the telescopic rod 211 and is connected to the winding component 22. When the winding component 22 releases the pull rope 219, the telescopic rod 211 extends downward smoothly under the action of gravity, realizing the vertical lowering of the sampling bottle 217.

[0042] Furthermore, a first torsion spring 2114 is sleeved on the outer side of the vertical rod 212. The first torsion spring 2114 is located on the lower inner side of the rotating sleeve 2110. One end of the first torsion spring 2114 is fixedly connected to the outer wall of the vertical rod 212, and the other end of the first torsion spring 2114 is fixedly connected to the lower inner wall of the rotating sleeve 2110. A fixing block 2112 is fixedly connected to the other side of the rotating sleeve 2110. A limiting plate 2113 corresponding to the fixing block 2112 is fixedly connected to the outer side of the vertical rod 212. The limiting plate 2113 is located below the horizontal rod 214. A placement groove adapted to the bottom end of the sampling bottle 217 is opened on the top of the tray 216. The bottom end of the sampling bottle 217 is inserted into the placement groove of the corresponding tray 216.

[0043] In the above, the elastic restoring action of the first torsion spring 2114 can release elastic potential energy to assist the rotation of the rotating sleeve 2110 during the lowering process. The abutment and limiting action of the fixing block 2112 and the limiting plate 2113 can prevent the rotating sleeve 2110 from rotating excessively after it has reached the position, thus ensuring the stability of the position of the bracket 215 and the sampling bottle 217. At the same time, the top of the tray 216 is provided with a placement groove that matches the bottom of the sampling bottle 217. When the bottom of the sampling bottle 217 is inserted into the corresponding placement groove of the tray 216, it can ensure the reliable positioning and anti-tipping of the sampling bottle 217 on the tray 216, thereby improving the stability of the sampling process.

[0044] Furthermore, the winding component 22 includes a winding reel 221, which is rotatably connected to the fixed frame 1. One end of the winding reel 221 is fixedly connected to a worm gear 222. A worm 223 is rotatably connected to the fixed frame 1, and the worm 223 meshes with the worm gear 222. One end of the worm 223 is fixedly connected to a rotating handle 224. The other end of the pull rope 219 extends out of the telescopic rod 211 and is wound into the winding groove of the winding reel 221. A connecting frame 225 is fixedly connected to the outer wall of the vertical tube at the top of the telescopic rod 211. A first pulley 226 is rotatably connected to the connecting frame 225, and the pull rope 219 passes through the pulley groove of the first pulley 226.

[0045] In the above-mentioned configuration, the winding component 22, through the cooperation of the winding reel 221, worm gear 222, worm 223 and rotating handle 224, allows the operator to stably wind up and unwind the pull rope 219 by rotating the rotating handle 224. The meshing structure of the worm gear 222 and worm 223 has a self-locking characteristic, which can effectively prevent the winding reel 221 from reversing due to gravity, ensuring the controllability and safety of the lowering and retrieval process. At the same time, the reversing guidance of the first pulley 226 can reduce the friction and wear of the pull rope 219, further improving the smoothness and service life of the pull rope 219.

[0046] Example 2

[0047] For further details, please refer to [link / reference]. Figures 1 to 11 Based on Embodiment 1, the opening and closing unit 3 includes a sample injection component 31, a control component 32, and an adjustment component 33; the top of the sampling bottle 217 is open, and the sample injection component 31 includes a cap 311 for sealing the top opening of the sampling bottle 217. The cap 311 corresponds one-to-one with the sampling bottle 217, and the cap 311 is sealed at the top opening of the sampling bottle 217. The sealing method is that a sealing ring is circumferentially embedded on the contact surface between the sampling bottle 217 and the cap 311.

[0048] In the above, the elastic compression of the sealing ring can ensure the airtightness and watertightness of the sampling bottle 217 in the non-sampling state, prevent shallow water from entering the sampling bottle 217 in advance during the lowering process, and ensure the accuracy of subsequent fixed-depth sampling.

[0049] Furthermore, the cover opening unit 4 includes a transmission component 41 and a reset component 42; the transmission component 41 includes a transmission bracket 411, which is vertically slidably connected to the bracket 215. The bracket 215 has a sliding groove adapted to the transmission bracket 411. A horizontal connecting strip 413 is fixedly connected to one side of the cover 311. One end of the horizontal connecting strip 413 is fixedly connected to the side wall of the transmission bracket 411. A clearance groove 4131 is vertically opened through the horizontal connecting strip 413. A rack 412 is fixedly connected to one side of the transmission bracket 411. A connecting shaft 414 is fixedly connected to the bracket wall of the bracket 215. A gear 415 is rotatably sleeved on the outside of the connecting shaft 414. A diagonal rod 416 is fixedly connected to the upper part of the gear 415. The gear 415 meshes with the rack 412.

[0050] The reset component 42 includes a pressure wheel 421, which is rotatably connected to the top of the inclined rod 416. A baffle 422 is fixedly connected to the frame wall of the bracket 215. The inclined rod 416 abuts against the baffle 422. A second torsion spring 423 is sleeved on the outside of the connecting shaft 414. One end of the second torsion spring 423 is fixedly connected to the inclined rod 416, and the other end of the second torsion spring 423 is fixedly connected to the frame wall of the bracket 215. A limiting horizontal plate 424 is fixedly connected to the fixed frame 1. The limiting horizontal plate 424 is correspondingly arranged with the guide wheel 2111. At the end of the retraction, the pressure wheel 421 is pressed against the limiting horizontal plate 424, which drives the gear 415 to rotate, causing the rack 412 to drive the transmission bracket 411 to slide upward, thereby realizing the opening of the cover 311.

[0051] In the above-mentioned process, during the final stroke of the device recovery, the pressure wheel 421 is continuously pressed by the limiting horizontal plate 424, which drives the inclined rod 416 and gear 415 to rotate. This drives the rack 412 to drive the transmission bracket 411 to slide upward along the bracket 215. Through the horizontal connecting bar 413, all the caps 311 move upward to open. This design eliminates the need for manual unscrewing of each bottle cap, simplifying the operation process after sampling. The baffle 422 abuts against the inclined rod 416. One end of the second torsion spring 423 is fixedly connected to the inclined rod 416, and the other end is fixedly connected to the frame wall of the bracket 215. This allows the inclined rod 416 and gear 415 to maintain their initial positions in a non-triggered state, ensuring that the caps 311 remain closed during normal lowering and sampling.

[0052] Example 3

[0053] For further details, please refer to [link / reference]. Figures 1 to 14Based on Embodiment 2, the sample injection component 31 further includes a vertical pull rod 315. The vertical pull rod 315 is slidably disposed within the clearance groove 4131. In the horizontal direction, the two side walls of the vertical pull rod 315 slide against the inner side wall of the clearance groove 4131, ensuring that when the vertical pull rod 315 slides horizontally, it can simultaneously drive the horizontal pull rod 314 and the valve core 313 to move horizontally, thereby achieving precise transmission of the opening and closing action of the valve core 313. In the vertical direction, the vertical pull rod 315 can slide freely along the entire length of the clearance groove 4131 without any vertical limiting constraints. A water inlet pipe 312 is fixedly connected to the body 311. One end and the upper part of the water inlet pipe 312 are provided with a first opening 3121, and there are two first openings 3121. The other end of the water inlet pipe 312 is provided with a second opening 3122. The lower part of the water inlet pipe 312 is provided with a third opening 3123 that communicates with the inside of the sampling bottle 217. A valve core 313 is slidably and sealed on the inner side of the water inlet pipe 312. One end of the valve core 313 is fixedly connected with a horizontal pull rod 314. One end of the horizontal pull rod 314 slides through the water inlet pipe 312 and is fixedly connected to a vertical pull rod 315.

[0054] As described above, the first opening 3121 is simultaneously opened at one end and the top of the water inlet pipe 312, allowing air in the sampling bottle 217 to be smoothly discharged through the first opening 3121, and water sample to flow smoothly into the sampling bottle 217 through the first opening 3121, the inner cavity of the water inlet pipe 312, and the third opening 3123; the valve core 313 can achieve sealing sliding under the drive of the horizontal pull rod 314 and the vertical pull rod 315, controlling the opening and closing of the third opening 3123.

[0055] Furthermore, the control component 32 includes a float 321 and a horizontal slide bar 322. The horizontal slide bar 322 is laterally slidably connected to the transmission bracket 411. One end of the horizontal slide bar 322 is fixedly connected to the side wall of the vertical pull rod 315, and the other end of the horizontal slide bar 322 is fixedly connected to a connecting rope 324. A fixing strip 325 is fixedly connected to the side wall of the transmission bracket 411. One end of the fixing strip 325 is rotatably connected to two symmetrically arranged second pulleys 326. The connecting rope 324 passes through the pulley groove between the two second pulleys 326. A spring 323 is sleeved on the outside of the horizontal slide bar 322. One end of the spring 323 is fixedly connected to the side wall of the transmission bracket 411, and the other end of the spring 323 is fixedly connected to the side wall of the vertical pull rod 315.

[0056] In the above process, when the sampling bottle 217 reaches the preset depth, the connecting rope 324 is fully straightened and pulls the horizontal slide bar 322 to slide horizontally. The spring 323 is compressed, which in turn drives the valve core 313 to open through the vertical pull bar 315 and the horizontal pull bar 314 to achieve sampling. During the recovery process, the spring 323 releases its elastic potential energy, pushes the horizontal slide bar 322 and the valve core 313 to reset, closes the third opening 3123, prevents water from different depths from mixing in, and ensures the purity of the water sample.

[0057] Furthermore, the adjusting component 33 includes adjusting holes 332, which are evenly spaced along the length of the connecting rope 324. The connecting rope 324 is also provided with scale lines. The lower part of the float 321 is fixedly connected to a threaded rod 333. A first clamping piece 334 is fixedly sleeved on the outside of the threaded rod 333. A second clamping piece 335, which is symmetrically arranged with the first clamping piece 334, is also movably sleeved on the outside of the threaded rod 333. A handle nut 331 is threadedly sleeved on the outside of the threaded rod 333.

[0058] As described above, the connecting rope 324 is also equipped with scale lines. The operator can select the adjustment hole 332 corresponding to the scale line position according to the target sampling depth, insert the threaded rod 333 at the bottom of the float 321 into the adjustment hole 332, clamp the connecting rope 324 by the first clamp 334 and the second clamp 335, and tighten the handle nut 331 to lock it in place. In this way, the trigger depth of the float 321 can be adjusted and locked to adapt to the sampling needs of different target water layers. The adjustment is convenient and the fixation is reliable. The depth setting can be completed without the need for additional tools.

[0059] The working principle of the in-situ water pollution detection and sampling device provided by this invention is as follows:

[0060] When the device of the present invention is used, the fixing frame 1 is fixedly installed on the sampling boat or working platform, so that the sampling unit 2 is located above the water surface, and the bracket 215 and the sampling bottle 217 are initially located on the inner side of the hull or working platform. At this time, the telescopic rod 211 is in a fully retracted state, and the float 321 is connected to the horizontal sliding rod 322 through the connecting rope 324. The length of the connecting rope 324 meets the usage requirements.

[0061] According to the target sampling depth, the operator selects the adjustment hole 332 at the corresponding scale line position on the connecting rope 324, inserts the threaded rod 333 fixed at the lower part of the float 321 into the adjustment hole 332, so that the first clamping piece 334 fixedly sleeved on the outside of the threaded rod 333 fits against one side of the connecting rope 324, and then the second clamping piece 335 is movably sleeved on the outside of the threaded rod 333 and fits against the other side of the connecting rope 324. Tighten the handle nut 331 on the outside of the threaded rod 333 to clamp and fix the connecting rope 324 with the first clamping piece 334 and the second clamping piece 335, thus completing the setting of the trigger depth of the float 321.

[0062] The operator rotates the rotating handle 224 to drive the worm 223 to rotate, which in turn drives the worm wheel 222 meshing with it to rotate. The worm wheel 222 drives the take-up reel 221 to rotate, causing the take-up reel 221 to gradually release the wound rope 219. The meshing structure between the worm wheel 222 and the worm 223 has a self-locking characteristic, which can prevent the take-up reel 221 from reversing due to gravity, ensuring the controllability of the lowering process.

[0063] As the rope 219 continues to be released, under the gravitational pull of the counterweight cone 213 at the bottom of the vertical rod 212, the multiple vertical tubes of the telescopic rod 211 that are slidably connected in sequence gradually extend downwards. The vertical rod 212 and the counterweight cone 213 move vertically downwards, causing the sampling bottle 217 to gradually move to the target depth below the water surface.

[0064] During the downward movement of the vertical rod 212, the guide wheel 2111 on the horizontal bar 214 of the side wall of the rotating sleeve 2110 rolls vertically from top to bottom along the vertical guide groove 2183 of the guide tube 218. During this process, the rotating sleeve 2110 does not rotate, so that the bracket 215 and the sampling bottle 217 maintain a stable vertical downward movement without radial rotation.

[0065] As the guide wheel 2111 rolls from the top to the bottom of the vertical guide groove 2183, the crossbar 214 drives the bracket 215 to move downward. As the guide wheel 2111 moves downward, the elastic potential energy of the second torsion spring 423 is gradually released until the pressure wheel 421 disengages from the limiting crossbar 424. During this process, the end of the inclined bar 416 on which the pressure wheel 421 is mounted rotates upward, thereby causing the rack 412 to move downward. The inclined bar 416 drives the gear 415 to rotate, which in turn drives the transmission bracket 411 to slide downward along the sliding groove of the bracket 215. The cover 311 moves downward until the cover 311 is placed on the top of the sampling bottle 217 to seal its opening. At the same time, the inclined bar 416 abuts against the baffle 422.

[0066] When the guide wheel 2111 rolls to the bottom of the vertical guide groove 2183, it enters the spiral guide groove 2182, which is connected to the bottom of the vertical guide groove 2183. As the vertical rod 212 continues to move downward, the guide wheel 2111 rolls along the spiral trajectory of the spiral guide groove 2182. At this time, the elastic potential energy of the first torsion spring 2114 is gradually released, and the rotating sleeve 2110 begins to rotate. During the rotation, the horizontal rod 214, the bracket 215, and all the sampling bottles 217 rotate until the guide wheel 2111 rolls to the spiral guide groove 2182. At the bottom, a 180° rotation is completed, so that the sampling bottle 217, which was originally located on the inner side of the ship / platform, is completely rotated to the outer water area of ​​the ship / platform. The rotating sleeve 2110 drives the fixing block 2112 to rotate to the position where it abuts against the limiting plate 2113 on the vertical rod 212, so as to prevent the rotating sleeve 2110 from rotating excessively during the lowering process and to ensure the stability of the sampling bottle 217. At this time, the guide wheel 2111 enters the notch 2181 connected to it from the bottom of the spiral guide groove 2182, and continues to move downward after passing through the notch 2181.

[0067] During the continuous descent of the device, the float 321 remains floating on the water surface under the action of buoyancy. As the sampling bottle 217 moves towards the target depth underwater, the connecting rope 324 is gradually straightened. When the sampling bottle 217 reaches the preset target sampling depth, the connecting rope 324 is fully straightened. After the device continues to descend a short distance, the rotating handle 224 stops rotating. The connecting rope 324, through the reversal of the second pulley 326, generates a horizontal pulling force on the horizontal sliding rod 322, pulling the horizontal sliding rod 322 to slide horizontally along the transmission bracket 411, thereby driving the vertical pull rod 315 to move horizontally. The vertical pull rod 315 compresses the spring 323, allowing the vertical pull rod 315 to store elastic restoring potential energy.

[0068] During the horizontal movement of the vertical pull rod 315, the horizontal pull rod 314 drives the valve core 313 to slide along the inner side of the water inlet pipe 312 toward the second opening 3122, thereby releasing the valve core 313 from blocking the third opening 3123 at the bottom of the water inlet pipe 312. At this time, the in-situ water sample at the target depth enters the inner cavity of the water inlet pipe 312 from the first opening 3121 at the end of the water inlet pipe 312, and then flows into the interior of the sampling bottle 217 through the third opening 3123, thus completing the in-situ water sample collection at the target depth.

[0069] After a period of waiting, once the water sample in the sampling bottle 217 has been collected, the operator reverses the rotating handle 224, driving the winding reel 221 to begin winding the pull rope 219. The telescopic rod 211 retracts, causing the sampling bottle 217 to be retrieved upwards. As the sampling bottle 217 moves upwards, the tension in the connecting rope 324 gradually disappears, and the elastic potential energy of the spring 323 is released. This pushes the vertical pull rod 315 to reset the horizontal sliding rod 322 horizontally in the opposite direction. Subsequently, the horizontal pull rod 314 drives the valve core 313 to slide in the opposite direction to reseal the third opening 3123, making the sampling bottle 217 a completely sealed cavity. This prevents water from different depths from mixing into the sampling bottle 217 during the upward retrieval process, ensuring the purity of the water sample and the accuracy of subsequent testing.

[0070] As the winding reel 221 continues to wind up the pull rope 219, the telescopic rod 211 drives the vertical rod 212 and the counterweight cone 213 to move vertically upward. The guide wheel 2111 first enters the spiral guide groove 2182 through the notch 2181, and then rolls upward along the spiral guide groove 2182. Under the guidance of the spiral guide groove 2182, the guide wheel 2111 drives the horizontal rod 214 to rotate the rotating sleeve 2110 180° in the opposite direction around the vertical rod 212, so that the bracket 215 and the sampling bottle 217 are rotated and reset from the water outside the ship / platform to the inner upper position of the ship / platform, preparing for subsequent opening and liquid retrieval. During this process, the first torsion spring 2114 is elastically compressed.

[0071] When the guide wheel 2111 re-enters the vertical guide groove 2183 from the top of the spiral guide groove 2182, the guide wheel 2111 rolls vertically from bottom to top along the vertical guide groove 2183 until the telescopic rod 211 is fully retracted and reset, and the entire device returns to its initial high position, completing the entire recovery process.

[0072] During the final upward retraction of the device, i.e., as the guide wheel 2111 moves from the bottom to the top of the vertical guide groove 2183, when the guide wheel 2111 enters the bottom position of the vertical guide groove 2183 from bottom to top, the pressure wheel 421 at the top of the inclined rod 416 begins to contact the bottom surface of the limiting horizontal plate 424. As the device continues to retract upward, the pressure wheel 421 moves upward, and the limiting horizontal plate 424 exerts a continuous downward squeezing force on the pressure wheel 421. After encountering resistance, the pressure wheel 421 remains at its current height. As the bracket 215 continues to rise... The pressure wheel 421 drives the inclined rod 416 to rotate the gear 415. The gear 415 rotates against the preload of the second torsion spring 423, thereby driving the rack 412 to move upward. This in turn drives the transmission bracket 411 to slide upward along the sliding groove of the bracket 215. When the transmission bracket 411 moves upward, it drives all the caps 311 to move upward through the horizontal connecting bar 413, so that the openings at the top of all the sampling bottles 217 are opened. There is no need for the operator to unscrew the caps one by one. The vertical pull rod 315 slides in the clearance groove 4131 of the horizontal connecting bar 413.

[0073] At this point, the lid 311 has moved upward a distance sufficient for the operator to remove the sampling bottle 217 for testing. Subsequently, the water sample inside the sampling bottle 217 can be tested using a testing instrument.

[0074] 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. An in-situ water pollution detection and sampling device, comprising a fixing frame (1), characterized in that, A sampling unit (2) is installed on the fixed frame (1), an opening and closing unit (3) is installed on the sampling unit (2), and a cover opening unit (4) is installed on the opening and closing unit (3). The sampling unit (2) includes a lifting component (21) and a winding component (22); the lifting component (21) includes a telescopic rod (211) and a sampling bottle (217). The upper part of the telescopic rod (211) is fixedly connected to the fixing frame (1), and a vertical rod (212) is fixedly connected to the bottom end of the telescopic rod (211). A counterweight cone (213) is fixedly connected to the bottom end of the vertical rod (212). A guide tube (218) is coaxially arranged on the outer side of the vertical rod (212). The side rotating sleeve is provided with a rotating sleeve (2110). A crossbar (214) is fixedly connected to one side of the rotating sleeve (2110). A guide wheel (2111) is provided on the outer side of the crossbar (214). A bracket (215) is fixedly connected to one end of the crossbar (214). Several horizontal support bars (2151) are fixedly connected at equal intervals from top to bottom on one side of the bracket (215). A tray (216) for carrying the sampling bottle (217) is fixedly connected to one end of the horizontal support bar (2151).

2. The in-situ water pollution detection and sampling device according to claim 1, characterized in that, The guide tube (218) has a notch (2181), a spiral guide groove (2182), and a vertical guide groove (2183) extending through its side wall. The guide tube (218) is fixedly connected to the fixing frame (1). The top end of the spiral guide groove (2182) is connected to the bottom end of the vertical guide groove (2183), and the bottom end of the spiral guide groove (2182) is connected to the top end of the notch (2181). The notch (2181), the spiral guide groove (2182), and the vertical guide groove (2183) are all adapted to the guide wheel (2111). The guide wheel (2111) rolls in sequence within the notch (2181), the spiral guide groove (2182), and the vertical guide groove (2183). The sampling bottle (217) and the tray (216) are arranged in a one-to-one correspondence. The inner bottom end of the telescopic rod (211) is fixedly connected with a pull rope (219). The telescopic rod (211) is composed of multiple vertical tubes that slide and fit together in sequence. The pull rope (219) is movably inserted inside the multiple vertical tubes, and one end of the pull rope (219) is fixedly connected to the inner bottom end of the bottommost vertical tube.

3. The in-situ water pollution detection and sampling device according to claim 2, characterized in that, A first torsion spring (2114) is sleeved on the outer side of the vertical rod (212). The first torsion spring (2114) is located on the lower inner side of the rotating sleeve (2110). One end of the first torsion spring (2114) is fixedly connected to the outer wall of the vertical rod (212), and the other end of the first torsion spring (2114) is fixedly connected to the lower inner wall of the rotating sleeve (2110). A fixing block (2112) is fixedly connected to the other side of the rotating sleeve (2110). A limiting plate (2113) corresponding to the fixing block (2112) is fixedly connected to the outer side of the vertical rod (212). The limiting plate (2113) is located below the horizontal rod (214). A placement groove adapted to the bottom end of the sampling bottle (217) is opened on the top of the tray (216). The bottom end of the sampling bottle (217) is inserted into the placement groove of the corresponding tray (216).

4. The in-situ water pollution detection and sampling device according to claim 3, characterized in that, The winding component (22) includes a winding reel (221), which is rotatably connected to a fixed frame (1). One end of the winding reel (221) is fixedly connected to a worm gear (222), and a worm (223) is rotatably connected to the fixed frame (1). The worm (223) meshes with the worm gear (222), and one end of the worm (223) is fixedly connected to a rotating handle (224). The other end of the pull rope (219) extends out of the telescopic rod (211) and is wound in the winding groove of the winding reel (221). A connecting frame (225) is fixedly connected to the outer wall of the vertical tube at the top of the telescopic rod (211), and a first pulley (226) is rotatably connected to the connecting frame (225). The pull rope (219) passes through the pulley groove of the first pulley (226).

5. The in-situ water pollution detection and sampling device according to claim 1, characterized in that, The opening and closing unit (3) includes a sample injection component (31), a control component (32), and an adjustment component (33); the top of the sampling bottle (217) is open, and the sample injection component (31) includes a cap (311) for sealing the top opening of the sampling bottle (217). The cap (311) corresponds one-to-one with the sampling bottle (217), and the cap (311) is sealed at the top opening of the sampling bottle (217).

6. The in-situ water pollution detection and sampling device according to claim 5, characterized in that, The opening unit (4) includes a transmission component (41) and a reset component (42); the transmission component (41) includes a transmission bracket (411), which is vertically slidably connected to the bracket (215), and a horizontal connecting strip (413) is fixedly connected to one side of the cover (311). One end of the horizontal connecting strip (413) is fixedly connected to the side wall of the transmission bracket (411). A clearance groove (4131) is vertically opened through the horizontal connecting strip (413). A rack (412) is fixedly connected to one side of the transmission bracket (411). A connecting shaft (414) is fixedly connected to the frame wall of the bracket (215). A gear (415) is rotatably sleeved on the outside of the connecting shaft (414). A diagonal rod (416) is fixedly connected to the upper part of the gear (415). The gear (415) meshes with the rack (412).

7. The in-situ water pollution detection and sampling device according to claim 6, characterized in that, The reset component (42) includes a pressure wheel (421), which is rotatably connected to the top of the inclined rod (416). A baffle (422) is fixedly connected to the wall of the bracket (215). The inclined rod (416) abuts against the baffle (422). A second torsion spring (423) is sleeved on the outside of the connecting shaft (414). One end of the second torsion spring (423) is fixedly connected to the inclined rod (416), and the other end of the second torsion spring (423) is fixedly connected to the wall of the bracket (215). A limiting plate (424) is fixedly connected to the fixing frame (1). The limiting plate (424) is correspondingly arranged with the guide wheel (2111).

8. The in-situ water pollution detection and sampling device according to claim 6, characterized in that, The sample injection component (31) also includes a vertical pull rod (315), which is slidably disposed in the clearance groove (4131). A water inlet pipe (312) is fixedly connected to the cover (311). A first opening (3121) is provided at one end and the upper part of the water inlet pipe (312). A second opening (3122) is provided at the other end of the water inlet pipe (312). A third opening (3123) communicating with the inside of the sampling bottle (217) is provided at the lower part of the water inlet pipe (312). A valve core (313) is slidably sealed on the inner side of the water inlet pipe (312). A horizontal pull rod (314) is fixedly connected to one end of the valve core (313). One end of the horizontal pull rod (314) slides through the water inlet pipe (312) and is fixedly connected to the vertical pull rod (315).

9. The in-situ water pollution detection and sampling device according to claim 8, characterized in that, The control component (32) includes a float (321) and a horizontal slide bar (322). The horizontal slide bar (322) is slidably connected to the transmission bracket (411) through the transverse path. One end of the horizontal slide bar (322) is fixedly connected to the side wall of the vertical pull rod (315). The other end of the horizontal slide bar (322) is fixedly connected to a connecting rope (324). A fixing strip (325) is fixedly connected to the side wall of the transmission bracket (411). One end of the fixing strip (325) is rotatably connected to two symmetrically arranged second pulleys (326). The connecting rope (324) passes through the pulley groove between the two second pulleys (326). A spring (323) is sleeved on the outside of the horizontal slide bar (322). One end of the spring (323) is fixedly connected to the side wall of the transmission bracket (411). The other end of the spring (323) is fixedly connected to the side wall of the vertical pull rod (315).

10. The in-situ water pollution detection and sampling device according to claim 9, characterized in that, The adjusting component (33) includes an adjusting hole (332), which is provided at equal intervals along the length of the connecting rope (324). The lower part of the float (321) is fixedly connected to a threaded rod (333). A first clamping piece (334) is fixedly sleeved on the outside of the threaded rod (333). A second clamping piece (335) symmetrically arranged with the first clamping piece (334) is also movably sleeved on the outside of the threaded rod (333). A handle nut (331) is threaded onto the outside of the threaded rod (333).

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