Deepwater pre-pressing sampling device

Abstract

The invention provides a deepwater pre-pressing sampling device which comprises a winder, and a sampling mechanism is fixedly mounted at the bottom of the winder; the sampling mechanism comprises a sampling box, physical automatic sampling modules are fixedly installed on the front face and the back face of the sampling box at equal intervals in a linear arrangement mode, an exhaust valve is fixedly installed in the middle of one side of a pressure pipe, and a sampling sealing switching module is fixedly installed in the middle of the bottom of the sampling box; according to the technical scheme, through the pre-pressing sealing mechanism and the auxiliary pressure relief assembly, surface water is prevented from being mixed when the sampling box sinks, and a deepwater water sample is true; by combining an electric control triggering part and a pure mechanical sampling module, remote and rapid batch sampling can be realized when electric energy exists, and automatic sampling can be realized by presetting parameters when no electric energy exists; the pure mechanical module can better support complete power failure, multi-depth one-time sampling is automatically completed through water pressure after the pressure is preset, the problems that in the prior art, water samples are not real, power supply is relied, and sampling is difficult without power are solved, and the environmental adaptability is improved.

Description

Technical Field

[0001] This invention relates to the field of deep-water sampling technology, and more particularly to a deep-water pre-pressure sampling device. Background Technology

[0002] In water environment monitoring, pollution control, and water quality assessment, wastewater sampling is a core preliminary step for obtaining accurate data. The quality of the sampling directly determines the reliability of subsequent testing and analysis results, and thus affects the scientific nature of pollution source tracing, treatment plan formulation, and ecological and environmental protection decisions. Currently, the common wastewater samplers widely used in the industry generally have a key technical defect during operation: when the sampler is lowered from above the water surface, the sampling space inside the sampler begins to connect with the surface water the moment it contacts and enters the water surface. This causes the water sample from the shallow water surface to directly enter the sampler. During the subsequent process of the sampler continuing to sink to the target sampling location in the deep water, due to the lack of an effective isolation and water sample replacement mechanism, the water sample from the shallow water surface that entered the sampler at the beginning remains in the sampling space and cannot be discharged or replaced by the intermediate and deep water bodies it passes through.

[0003] This problem directly results in the sampler reaching deep water areas and ultimately collecting water samples that are not true deep water samples from the target depth. Instead, the samples are mainly composed of shallow surface water samples, mixed with a small amount of water from non-target depths that may have seeped in during the sinking process. The composition of such water samples deviates significantly from the actual water quality of deep water. If used for water quality testing and analysis, it will cause the test data to be distorted and unable to accurately reflect key information such as the actual pollution level, pollutant types, and concentration distribution in deep water areas. This will mislead subsequent pollution assessment and remediation work, potentially leading to insufficient targeting and poor effectiveness of remediation measures, and may also delay the timing of pollution control, adversely affecting the protection and restoration of the aquatic ecosystem. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a deep-water pre-pressure sampling device to more accurately resolve the problems described above.

[0005] This invention is achieved through the following technical solution:

[0006] This invention proposes a deep-water pre-compression sampling device, including a winding device, wherein a sampling mechanism is fixedly installed at the bottom of the winding device;

[0007] The sampling mechanism includes a sampling box. Physical automatic sampling modules are fixedly installed on the front and back of the sampling box in a linear arrangement with equal spacing. A pressure tube is fixedly installed on one side of the top of the sampling box. A manual pressurizer is fixedly installed on the top of the pressure tube. An exhaust valve is fixedly installed in the middle of one side of the pressure tube. A sampling sealing switching module is fixedly installed in the middle of the bottom of the sampling box. A first pressure gauge is fixedly installed at the lower end of one side of the pressure tube.

[0008] Furthermore, the sampling and sealing switching module includes a water inlet, which is located in the middle of the bottom of the sampling box. A slide rod is slidably connected inside the water inlet, and a piston sealing gasket is fixedly installed on the top of the slide rod, covering the top of the water inlet inside the sampling box.

[0009] Furthermore, a limiting plate is fixedly installed at the bottom of the slide bar through the water inlet, and water inlet holes are equally spaced in the middle of the limiting plate.

[0010] Furthermore, a load-bearing frame is fixedly installed on both sides of the bottom of the sampling box, and a load-bearing ball is fixedly installed in the middle of the bottom of the load-bearing frame.

[0011] Furthermore, the winding device includes a support frame, a concave frame is fixedly installed on the top of the support frame, a winding roller is rotatably connected to the lower inner side of the concave frame, a suspension cable is wound around the outer surface of the winding roller, the sampling box is fixedly installed at the bottom of the suspension cable, a crank handle is rotatably connected to one side of the concave frame, the end of the crank handle is connected to one end of the winding roller through a coupling, and a bridge-type handrail is fixedly installed on the top of the concave frame.

[0012] Furthermore, the physical automatic sampling module includes a secondary sampling box, which is linearly arranged at equal intervals and fixedly installed on the front and back of the sampling box. A pressure regulating component is fixedly connected to the bottom of the secondary sampling box, a sampling component is movably installed on the upper end of the secondary sampling box, and a limiting component is fixedly installed on the upper front end of the secondary sampling box.

[0013] Furthermore, the pressure regulating assembly includes a lead screw, a base, and a limiting frame. The lead screw is rotatably connected to the bottom of the sampling box. A pressing plate is threaded onto the outer surface of the lead screw. The pressing plate is movably connected to the inside of the sampling box. A guide tube is fixedly installed at one bottom end of the pressing plate. A guide rod is slidably connected inside the guide tube. The bottom of the guide rod is fixedly connected to the bottom of the sampling box. The limiting frame is fixedly installed on the upper outer side of the sampling box. The top of the sampling assembly is fitted and connected to the upper inner end of the limiting frame. The base is fixedly installed on the bottom of the sampling box. An adjusting handwheel is rotatably connected to the bottom of the base. The top of the adjusting handwheel is connected to the bottom of the lead screw via a coupling. A limiting screw is threaded onto one side of the bottom of the adjusting handwheel. Limiting holes are arranged in a ring at equal intervals on the bottom of the base. The end of the limiting screw passes through the adjusting handwheel and is inserted into one of the limiting holes.

[0014] Furthermore, the sampling assembly includes a drain valve and a telescopic spring. The drain valve is fixedly installed in the center of the front of the sampling box, and the telescopic spring is movably installed on the back of the sampling box. A base block is fixedly installed on the top of the telescopic spring, and a lower sampling sealing plate is fixedly installed on the top of the base block. A support rod is fixedly installed on the top of the lower sampling sealing plate, and an upper sampling sealing plate is fixedly installed through the top of the support rod. A sampling water trough is formed between the upper and lower sampling sealing plates. When the upper and lower sampling sealing plates are retracted into the sampling box, the input end of the drain valve is located between the upper and lower sampling sealing plates.

[0015] Furthermore, a second pressure gauge is fixedly installed on the lower side of the sampling box, and a pressure relief exhaust pipe is fixedly installed on the lower back of the sampling box. A pressure relief airbag is fixedly installed at the output end of the pressure relief exhaust pipe, and the pressure relief airbag is located inside the sampling box.

[0016] Furthermore, the limiting component includes a guide frame, which is fixedly installed on the upper front of the sampling box. Limiting springs are fixedly connected to both ends of the guide frame. A slider is fixedly installed on the inner end of the limiting spring. A limiting arm is fixedly installed on the outer side of the slider. A limiting block is fixedly installed on the outer end of the limiting arm. The overall cross-sectional shape of the limiting block is a right trapezoid. The inclined surface of the limiting block is located on the inner top side. An elliptical expanding guide block is rotatably connected to the center of the front of the guide frame. An adjusting handle is fixedly installed on the front of the elliptical expanding guide block. The elliptical expanding guide block and the two limiting arms are connected in a transmission manner.

[0017] The beneficial effects of this invention are:

[0018] 1. During the application of this technical solution, by setting up a pre-pressurization sealing mechanism and an auxiliary pressure relief component, the sampling box can be pre-pressurized during use, so that the piston sealing gasket tightly seals and blocks the water inlet, preventing surface water from mixing into the sampling box during the sinking process. After reaching the designated deep water position, the pressure relief operation allows the deep water to smoothly enter the main chamber. At the same time, the physical automatic sampling module works with the pressure relief airbag to assist in venting, ensuring that the water sample can completely fill the sampling space and that no water body at non-target depth remains. This achieves the effect that the collected water sample is completely consistent with the actual water quality at the target depth, solving the problem in the existing technology where the sampler starts to take in water from the moment it touches the water surface, and surface water is always left during sinking. After reaching the deep water, the water sample cannot be completely replaced, resulting in inaccurate deep water sampling.

[0019] 2. During the application of this technical solution, by setting up a combination structure of an electrically controlled triggering component and a purely mechanical sampling module, it is possible to remotely and quickly control the exhaust valve through the control module when there is a power supply, and flexibly adjust the sampling depth with the winding device to achieve rapid batch collection of water samples at multiple depths, meeting the needs of large-scale sampling. When there is no power supply, it is only necessary to adjust the pressure parameters of the mechanical module in advance by adjusting the structure. During the lowering of the sampling box, the water pressure will automatically trigger the sampling action at different depths. Multi-depth one-time sampling can be completed without additional power supply, thus achieving the effect of adapting to different power supply scenarios and greatly improving sampling flexibility. This solves the problem in the existing technology that the sampler relies on a single power supply method, cannot efficiently complete multi-depth sampling in the absence of power, and is difficult to quickly collect water samples in batches when there is power.

[0020] 3. During the application of this technical solution, by setting up a purely mechanical physical automatic sampling module, the trigger pressure of different sampling units can be preset in advance by adjusting the components in the event of a complete power outage. When the sampling box reaches the corresponding depth during the descent, the water pressure will automatically compress the preset pressure spring component, which will drive the sealing plate to form a sampling chamber and complete the water sample storage. This achieves the effect of automatically collecting water samples from multiple depths at one time when there is no power supply, solving the problem that the sampling device in the prior art relies on electricity and cannot complete the sampling operation in the event of a power outage or no power supply environment. Even in remote, powerless water areas or in the event of a sudden power outage, the sampling work can be carried out smoothly, which significantly improves the environmental adaptability of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the present invention from a bottom view;

[0023] Figure 3 This is a side view of the structure of the present invention;

[0024] Figure 4This is a schematic diagram of the sampling and sealing switching module structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the rear view structure of the physical automatic sampling module of the present invention;

[0026] Figure 6 This is a front view structural diagram of the disassembled state of the physical automatic sampling module of the present invention;

[0027] Figure 7 This is a top-view structural diagram of the disassembled physical automatic sampling module of the present invention;

[0028] Figure 8 This is a schematic diagram of the internal structure of the physical automatic sampling module of the present invention in its disassembled state;

[0029] Figure 9 For the present invention Figure 6 A magnified structural diagram at point A.

[0030] In the diagram: 1. Winder; 11. Support frame; 12. Concave frame; 13. Winding roller; 14. Suspension cable; 15. Hand crank; 16. Bridge handrail; 2. Sampling mechanism; 21. Sampling box; 22. Sampling and sealing switching module; 221. Water inlet; 222. Slide rod; 223. Piston seal; 224. Limiting plate; 225. Water inlet; 226. Loading frame; 227. Loading ball; 23. Pressure pipe; 24. Manual pressurizer; 25. Exhaust valve; 26. Physical automatic sampling module; 261. Secondary sampling box; 262. Pressure regulating component; 2621. Lead screw; 2622. Chassis; 2623. Limiting frame; 2624. Extrusion plate; 26 25. Guide tube; 2626. Guide rod; 2627. Adjusting handwheel; 2628. Limiting screw; 2629. Limiting hole; 263. Sampling assembly; 2631. Drain valve; 2632. Telescopic spring; 2633. Base block; 2634. Lower sampling sealing plate; 2635. Support rod; 2636. Upper sampling sealing plate; 264. Pressure relief exhaust pipe; 265. Second pressure gauge; 266. Limiting assembly; 2661. Guide frame; 2662. Limiting spring; 2663. Slider; 2664. Limiting arm; 2665. Limiting block; 2666. Elliptical expansion guide block; 2667. Adjusting handle; 267. Pressure relief airbag; 27. First pressure gauge. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1

[0033] The deep-water preloading sampling device includes a winding device 1, and a sampling mechanism 2 is fixedly installed at the bottom of the winding device 1.

[0034] The sampling mechanism 2 includes a sampling box 21. Physical automatic sampling modules 26 are fixedly installed on the front and back of the sampling box 21 in a linear arrangement with equal spacing. A pressure pipe 23 is fixedly installed on one side of the top of the sampling box 21. A manual pressure injector 24 is fixedly installed on the top of the pressure pipe 23. An exhaust valve 25 is fixedly installed in the middle of one side of the pressure pipe 23. A sampling sealing switching module 22 is fixedly installed in the middle of the bottom of the sampling box 21. A first pressure gauge 27 is fixedly installed at the lower end of one side of the pressure pipe 23.

[0035] During application, this device, through the configuration of a winding device 1, a sampling mechanism 2, and the sampling mechanism 2 including a sampling box 21, a physical automatic sampling module 26, a pressure pipe 23, a manual pressurizer 24, an exhaust valve 25, a sampling sealing switching module 22, and a first pressure gauge 27, allows for the following operation: First, the manual pressurizer 24 is operated to inject air pressure into the sampling box 21 through the pressure pipe 23. During injection, the first pressure gauge 27 provides real-time feedback on the pressure value inside the sampling box 21. The operator can adjust the injected air pressure according to the target sampling depth by observing the first pressure gauge 27 until the pressure reaches the appropriate level for the target depth. Within the specified range, the sampling sealing switching module 22 remains sealed under the pressure of the air inside the sampling box 21, preventing surface water from entering the sampling box 21 before the device reaches the target depth. Once the air pressure inside the sampling box 21 is adjusted, the sampling mechanism 2 is slowly lowered to the designated water depth using the retractor 1. After the sampling mechanism 2 stabilizes at the target depth, the exhaust valve 25 on the pressure pipe 23 is opened, allowing the air pressure inside the sampling box 21 to be gradually released. As the air pressure decreases, the sealing state of the sampling sealing switching module 22 is released, allowing external deep water to pass smoothly through the sampling sealing switching module 22. 2. Entering the sampling chamber 21, the deep-water sampling of the main cavity is completed. Simultaneously, the physical automatic sampling modules 26, arranged linearly on the front and back of the sampling chamber 21, will automatically trigger sampling actions under the water pressure at different depths, collecting water samples at the corresponding depths. No additional underwater operations are required. This design, through the cooperation of the manual pressurizer 24 and the first pressure gauge 27, ensures that the initial pressure inside the sampling chamber 21 can accurately match the target sampling depth, avoiding the problem of surface water mixing with deep-water samples due to the lack of pressure control in existing technologies. The setting of the reel 1 allows for flexible control of the lowering depth of the sampling mechanism 2. This invention solves the problem of precise control of sampling depth in existing technologies. The layout of the physical automatic sampling module 26 enables simultaneous collection of water samples at multiple depths, allowing for the acquisition of water samples at different depths without the need for multiple device lowering, thus significantly improving sampling efficiency. The exhaust valve 25 allows for convenient release of air pressure inside the sampling box 21, ensuring that the sampling sealing switching module 22 can be opened in time to allow deep water to enter smoothly, further guaranteeing the purity of deep water samples. At the same time, the operation mode of the manual pressurizer 24 allows the device to complete pressurization preparation normally even without complex electrical control equipment, enhancing the applicability of the device in different usage scenarios.

[0036] Combination Figures 1-4As shown, the sampling and sealing switching module 22 includes a water inlet 221, which is located at the bottom center of the sampling box 21. A slide rod 222 is slidably connected inside the water inlet 221. A piston sealing gasket 223 is fixedly installed on the top of the slide rod 222, covering the top of the water inlet 221 inside the sampling box 21. A limit plate 224 is fixedly installed through the water inlet 221 at the bottom of the slide rod 222. Water inlet holes 225 are evenly spaced in the middle of the limit plate 224. A load-bearing frame 22 is fixedly installed on both sides of the bottom of the sampling box 21. 6. A load-bearing ball 227 is fixedly installed at the bottom center of the load-bearing frame 226. The winding device 1 includes a support frame 11. A concave frame 12 is fixedly installed at the top of the support frame 11. A winding roller 13 is rotatably connected to the lower inner side of the concave frame 12. A lifting cable 14 is wound around the outer surface of the winding roller 13. A sampling box 21 is fixedly installed at the bottom of the lifting cable 14. A crank handle 15 is rotatably connected to one side of the concave frame 12. The end of the crank handle 15 is connected to one end of the winding roller 13 through a coupling. A bridge-type handrail 16 is fixedly installed at the top of the concave frame 12.

[0037] In the above-described embodiments of this application, the device, through the configuration of a winder 1, a sampling and sealing switching module 22, a load-bearing frame 226, and a load-bearing ball 227, enables stable control of the movement and sampling process of the sampling box 21 during use. During operation, the operator can hold the bridge-type handrail 16 of the winder 1 to maintain body stability and rotate the crank 15 on one side of the concave frame 12. The crank 15 drives the winding roller 13 inside the concave frame 12 to rotate via a coupling. When the winding roller 13 rotates, it releases or retracts the suspension cable 14 wound on its outer surface. The sampling box 21, fixed at the bottom of the suspension cable 14, then moves with the cable as it is wound up and down. The sampling box 21 can be moved up and down, making it easy to send the sampling box 21 to the target sampling depth or retrieve it from the water. The support frame 11 provides stable support for the entire winding machine 1, preventing the winding machine 1 from tipping over and affecting sampling during operation. When the sampling box 21 sinks, the load-bearing frames 226 on both sides of the bottom and the load-bearing balls 227 at the bottom can increase the overall weight of the sampling box 21, counteracting the buoyancy of the water on the sampling box 21, allowing the sampling box 21 to move smoothly and stably underwater, without floating on the surface or sinking slowly due to excessive buoyancy. Before sampling or during the movement of the sampling box 21, the piston sealing gasket 223 of the sampling sealing switching module 22 will cover the sampling box 21. The top of the inlet 221 inside the sampling box 21 prevents external water from entering the sampling box 21 through the inlet 221, thus avoiding the mixing of non-target water samples. When sampling is required, the slide bar 222 slides along the inside of the inlet 221 under external force, causing the piston sealing gasket 223 at the top to move away from the inlet 221. At this time, external water can enter the sampling box 21 through the inlet 221. The limiting plate 224 at the bottom of the slide bar 222, which penetrates the inlet 221, not only limits the sliding range of the slide bar 222 and prevents the slide bar 222 from detaching from the inlet 221, but also allows water to enter more smoothly through the water inlet hole 225 in the middle. The sampling box 21 ensures sampling efficiency. After sampling, the piston sealing gasket 223 can be re-covered by the sliding rod 222 to seal the sampling box 21 and prevent the collected water sample from leaking or mixing with other water bodies. This structural design makes the movement control of the sampling box 21 more convenient and stable, and the switching between water inlet and sealing during the sampling process more reliable. It can ensure that the sampling box 21 can reach the target depth smoothly and effectively control the entry and retention of water samples. It solves the problems of inconvenient movement of the sampling box 21, susceptibility to buoyancy and easy mixing of water samples in traditional sampling, and improves the practicality of sampling operation and the accuracy of water samples.

[0038] Example 2

[0039] Combination Figures 5-9As shown, the physical automatic sampling module 26 includes a secondary sampling box 261, which is linearly arranged at equal intervals and fixedly installed on the front and back of the sampling box 21. A pressure regulating component 262 is fixedly connected to the bottom of the secondary sampling box 261, and a sampling component 263 is movably installed on the upper end of the secondary sampling box 261. A limit component 266 is fixedly installed on the upper front end of the secondary sampling box 261. The pressure regulating component 262 includes a lead screw 2621, a base 2622, and a limit bracket 2623. The lead screw 2621 is rotatably connected to the bottom of the sampling box, and a pressing plate 2624 is threadedly connected to the outer surface of the lead screw 2621. The pressing plate 2624 is movably connected to the sampling box 2623. Inside the sample box, a guide tube 2625 is fixedly installed at one bottom end of the extrusion plate 2624. A guide rod 2626 is slidably connected inside the guide tube 2625. The bottom of the guide rod 2626 is fixedly connected to the bottom of the sampling box. A limiting frame 2623 is fixedly installed on the upper outer side of the sampling box. The top of the sampling assembly 263 is fitted and connected to the upper inner side of the limiting frame 2623. A chassis 2622 is fixedly installed on the bottom of the sampling box. An adjusting handwheel 2627 is rotatably connected to the bottom of the chassis 2622. The top of the adjusting handwheel 2627 is connected to the bottom of the lead screw 2621 through a coupling. A limiting screw is threadedly connected to one side of the bottom of the adjusting handwheel 2627. 2628, The bottom of the chassis 2622 has limit holes 2629 arranged in a ring at equal intervals. The end of the limit screw 2628 passes through the adjusting handwheel 2627 and is inserted into one of the limit holes 2629. The sampling assembly 263 includes a drain valve 2631 and a telescopic spring 2632. The drain valve 2631 is fixedly installed in the center of the front of the sampling box. The telescopic spring 2632 is movably installed on the back of the sampling box. A base block 2633 is fixedly installed on the top of the telescopic spring 2632. A lower sampling sealing plate 2634 is fixedly installed on the top of the base block 2633. A support rod 26 is fixedly installed on the top of the lower sampling sealing plate 2634. 35. The top of the support rod 2635 passes through the sampling box and is fixedly installed with an upper sampling sealing plate 2636. A sampling water tank is formed between the upper sampling sealing plate 2636 and the lower sampling sealing plate 2634. When the upper sampling sealing plate 2636 and the lower sampling sealing plate 2634 are retracted into the sampling box, the input end of the drain valve 2631 is located between the upper sampling sealing plate 2636 and the lower sampling sealing plate 2634. A second pressure gauge 265 is fixedly installed on the lower side of the sampling box. A pressure relief exhaust pipe 264 is fixedly installed on the lower back of the sampling box. A pressure relief airbag 267 is fixedly installed at the output end of the pressure relief exhaust pipe 264. The pressure relief airbag 267 is located inside the sampling box 21.

[0040] The technical solution described in the above-described embodiments of this application, during the application of this device, by setting up a physical automatic sampling module 26, combined with a pressure regulating component 262, a sampling component 263, a pressure relief and exhaust pipe 264, a pressure relief airbag 267, etc., enables precise control of the sampling process according to different sampling needs during use, and stable collection of water samples at the target depth. Before use, first rotate the adjusting handwheel 2627 of the pressure regulating component 262, which drives the lead screw 2621 to rotate in the sampling box through the coupling. The lead screw 2621 drives the extrusion plate 2624 connected to the outer surface thread to move. The guide tube 2625 at the bottom of the extrusion plate 2624 cooperates with the guide rod 2626 to ensure that the extrusion plate 2624 moves. 624 will not deviate during movement. During adjustment, observe the second pressure gauge 265. Once the pressure inside the sampling box reaches the preset sampling trigger pressure, insert the limiting screw 2628 through the adjusting handwheel 2627 into the limiting hole 2629 of the chassis 2622 to fix the position of the adjusting handwheel 2627 and prevent the lead screw 2621 from loosening and causing pressure changes. The limiting bracket 2623 limits the initial position of the sampling component 263 by fitting it against the top of the sampling component 263, preventing the sampling component 263 from deviating in the initial state and affecting sampling. During sampling, when the external water pressure exceeds the preset pressure of the telescopic spring 2632, the telescopic spring 2632 is compressed and drives the base block 2633 to move downward. The base block 2633 drives the lower sampling sealing plate 2634 to move synchronously, and the upper sampling sealing plate 2636 moves downwards along with it via the support rod 2635. Finally, the upper sampling sealing plate 2636 and the lower sampling sealing plate 2634 retract together into the sampling box, forming a sampling water tank between them. The external water sample naturally enters the water tank to complete the sampling. During this process, the gas inside the sampling box enters the pressure relief airbag 267 through the pressure relief exhaust pipe 264 at the lower end of the back, effectively preventing the air pressure inside the box from hindering the water sample from entering and ensuring a smooth sampling process. When it is necessary to remove the water sample, open the drain valve 2631 in the middle of the front of the sampling box. Since the upper sampling sealing plate 2636 and the lower sampling sealing plate 2634 are in the retracted state, the drain valve 2631... The 631 input terminal is located precisely between the two, allowing the water sample in the tank to flow smoothly out through the drain valve 2631. This structural design not only allows for flexible setting of different sampling trigger pressures through the pressure regulating component 262 to meet the sampling needs at different depths, but also eliminates air pressure resistance during sampling with the help of the pressure relief airbag 267. The second pressure gauge 265 can monitor the pressure in real time to ensure the accuracy of pressure regulation and avoid sampling deviations caused by improper pressure settings. At the same time, the position design of the drain valve 2631 makes the water sample removal operation convenient. The overall structure can stably and accurately complete the sampling, solving the problems of insufficient accuracy and unsmooth sampling process of existing sampling devices at different depths.

[0041] Example 3

[0042] Combination Figures 5-9As shown, the limiting component 266 includes a guide frame 2661, which is fixedly installed on the upper front of the sampling box. Limiting springs 2662 are fixedly connected to both ends of the guide frame 2661. A slider 2663 is fixedly installed on the inner end of the limiting spring 2662. A limiting arm 2664 is fixedly installed on the outer side of the slider 2663. A limiting block 2665 is fixedly installed on the outer end of the limiting arm 2664. The overall cross-sectional shape of the limiting block 2665 is a right trapezoid. The inclined surface of the limiting block 2665 is set on the inner top side. An elliptical expanding guide block 2666 is rotatably connected to the center of the front of the guide frame 2661. An adjusting handle 2667 is fixedly installed on the front of the elliptical expanding guide block 2666. The elliptical expanding guide block 2666 and the two limiting arms 2664 are connected by a transmission.

[0043] In the above-described embodiments of this application, during the application of this device, a limiting component 266 is constructed, consisting of a guide frame 2661, a limiting spring 2662, a slider 2663, a limiting arm 2664, a limiting block 2665, an elliptical expanding guide block 2666, and an adjusting handle 2667. This component allows for stable control of the fixing and unfixing process of the sampling component 263 during use. When the upper sampling sealing plate 2636 in the sampling component 263 moves downward and retracts, it contacts the inclined surface on the inner side of the top of the limiting block 2665. As the upper sampling sealing plate 2636 continues to move downward, it generates an outward pushing force on the inclined surface, pushing the limiting block 2665 to move outward. The limiting arm 2664 moves synchronously, which in turn drives the slider 2663 to slide inside the guide frame 2661. During the sliding process, the slider 2663 compresses the limiting springs 2662 at both ends inside the guide frame 2661. After the sampling component 263 completes its retraction action, the upper sampling sealing plate 2636 no longer applies a pushing force to the limiting block 2665. The compressed limiting springs 2662 generate a restoring force, causing the slider 2663 to slide inside the guide frame 2661. The slider 2663 pulls the limiting block 2665 inward through the limiting arm 2664 until the limiting block 2665 is tightly fitted with the upper sampling sealing plate 2636, thus achieving the clamping of the upper sampling sealing plate 2636. The sampling assembly 263 is fixed to prevent displacement during subsequent processes. When it is necessary to release the fixing of the upper sampling sealing plate 2636, the adjusting handle 2667 is rotated. The adjusting handle 2667 will drive the elliptical opening guide block 2666 in the center of the front of the guide frame 2661 to rotate. Since the elliptical opening guide block 2666 is connected to the two limiting arms 2664, as the elliptical opening guide block 2666 rotates, its arc-shaped surface will generate an outward supporting force on the two limiting arms 2664, pushing the two limiting arms 2664 to separate outward. The limiting arms 2664 drive the slider 2663 to compress the limiting spring 2662 again, and at the same time drive the limiting block 2665 to move outward, so that the limiting block 2665 disengages. The upper sampling sealing plate 2636 releases the limiting state. This process ensures that the sampling component 263 remains stable and fixed during sampling, preventing displacement of the sampling component 263 due to water flow, device shaking, or other factors. This prevents water sample leakage or mixing with water of other depths in the sampling tank, ensuring sampling quality. The method of controlling the elliptical guide block 2666 to release the limiting state by adjusting the handle 2667 is simple and direct, requiring no disassembly of any parts. This improves the efficiency of post-sampling water sample processing, reduces wear that may occur during component disassembly, extends the service life of the limiting component 266, and ensures its long-term reliable cooperation with the sampling component 263 to complete the work.

[0044] The operating principle and advantages of this invention are as follows: Before using the device, the winder 1 is placed in the designated operating position. The support frame 11 supports the overall structure of the winder 1. The control module is installed on the support frame 11. Then, the crank handle 15 of the winder 1 is rotated, which drives the winding roller 13 to rotate through the coupling. The smooth winding and unwinding of the suspension cable 14 is checked to ensure that the sampling box 21 fixed at the bottom of the suspension cable 14 can move synchronously with the cable. Then, the manual pressurizer 24 is operated to inject air pressure into the sampling box 21 through the pressure pipe 23. During this process, the solenoid valve exhaust valve 25 is kept closed to avoid leakage of the injected air pressure. At the same time, the first air pressure gauge 27 is observed to monitor the air pressure value in the sampling box 21 in real time. The manual pressurizer 24 is closed when the air pressure reaches the preset value that matches the target sampling depth. At this time, the air pressure in the sampling box 21 acts on the piston sealing gasket 223, which tightly presses the piston sealing gasket 223 against the water inlet 221 to block the water inlet channel. Then, for each auxiliary sampling box 26 1. Debug the physical automatic sampling module 26. Rotate the adjusting handwheel 2627 of the pressure adjusting component 262, which drives the lead screw 2621 to rotate through the coupling. The lead screw 2621 drives the extrusion plate 2624 to move up and down along the inner wall of the sub-sampling box 261, causing the extrusion plate 2624 to compress the telescopic spring 2632, thus precisely adjusting the initial pressure inside the sub-sampling box 261. One end of the guide rod 2626 is fixed to the bottom of the sampling box, and the other end slides along the bottom. Connected to the inside of the guide tube 2625, the guide tube 2625 cooperates with the extrusion plate 2624 to restrict the movement direction of the extrusion plate 2624 to avoid deviation. During the adjustment process, observe the second pressure gauge 265. After the pressure in the auxiliary sampling box 261 reaches the preset value of the corresponding sampling depth, pass the limiting screw 2628 through the adjusting handwheel 2627 and insert it into the limiting hole 2629 at the bottom of the chassis 2622 to fix the position of the adjusting handwheel 2627 and prevent the screw 2621 from loosening due to external force, causing pressure changes.

[0045] After completing the pre-use preparations, the device is lowered into the water. The handle 15 of the rewinder 1 is turned to rotate the rewind roller 13 counterclockwise, slowly releasing the lifting cable 14. The sampling box 21, under its own weight and the combined action of the weighted balls 227 supported by the load-bearing frames 226 on both sides of the bottom, sinks into the water. The load-bearing frames 226 provide stable support for the weighted balls 227, which increase the overall weight of the sampling box 21, counteracting the buoyancy of the water and ensuring that the sampling box 21 sinks vertically and stably to the designated deep water position. This prevents slow sinking or floating due to buoyancy and also prevents the sampling box 21 from tilting due to water flow impact. To ensure the accuracy of sampling depth, during the entire descent process, the pre-pressurized air pressure inside the sampling box 21 continuously acts on the piston sealing gasket 223 at the top of the slide rod 222, ensuring that the piston sealing gasket 223 always fits tightly against the top of the inlet 221, completely blocking the channel for surface water to enter the main cavity of the sampling box 21 from the inlet 221. At this time, because the initial pressure inside the auxiliary sampling box 261 of the physical automatic sampling module 26 has not been broken, the telescopic spring 2632 remains in its original state, and the upper sampling sealing plate 2636 and the lower sampling sealing plate 2634 do not move, so sampling will not be triggered prematurely, ensuring that water samples are collected only after the target depth is reached.

[0046] Once the sampling box 21 reaches the designated deep water position, the crank handle 15 stops turning, and the deep water sampling stage begins. If there is a power supply, a remote command is sent through the control module on the support frame 11 to open the solenoid valve 25 on the sampling box 21. The air pressure inside the sampling box 21 is released outward through the exhaust valve 25 to relieve pressure. As the air pressure inside the sampling box 21 gradually decreases, the piston sealing gasket 223 loses its air pressure support. The water pressure at the designated depth acts on the bottom of the slide rod 222, pushing the slide rod 222 upward and causing the piston sealing gasket 223 to detach from the top of the inlet 221. Deep water smoothly enters the main cavity of the sampling box 21 through the inlet 221 to complete the sampling. After sampling is completed, the water pressure inside the sampling box 21 and the external water pressure reach a constant state, and the limiting plate 224 fixed at the bottom of the slide rod 222... The slide bar 222 moves downward under its own weight. The slide bar 222 moves the piston sealing gasket 223 at the top downward in sync until the piston sealing gasket 223 covers and presses the top of the water inlet 221 again, closing the water inlet channel. At the same time, under the action of water pressure at this depth, when the water pressure is greater than the preset pressure of the telescopic spring 2632 in the sub-sampling box 261, the telescopic spring 2632 is compressed due to the water pressure, which drives the base block 2633 to move downward. The lower sampling sealing plate 2634 fixed at the top of the base block 2633 moves downward in sync with the base block 2633. The base block 2633 drives the upper sampling sealing plate 2636 to move downward through the support rod 2635, so that the upper sampling sealing plate 2636 and the lower sampling sealing plate 2634 retract into the sub-sampling box 261.During this process, the gas inside the secondary sampling box 261 enters the pressure relief airbag 267 through the pressure relief exhaust pipe 264 at the lower end of the back. The pressure relief airbag 267 receives the gas to assist in pressure relief, ensuring that deep water can smoothly flow into the sampling water tank formed by the upper sampling sealing plate 2636, the lower sampling sealing plate 2634, and the inner wall of the secondary sampling box 261. At the same time, the gas pressure generated by the gas stored in the pressure relief airbag 267 acts on the interior of the secondary sampling box 261, providing air pressure elastic support for the telescopic spring 2632 and improving the elastic effect of the telescopic spring 2632. During the downward movement of the upper sampling sealing plate 2636, its bottom contacts the inclined surface of the limiting block 2665 of the limiting component 266, pushing the limiting block 2665 to move outward of the guide frame 2661, and the limiting spring 2662 is compressed. When the upper sampling sealing plate 2636 is completely retracted into the secondary sampling box 261, the limiting spring 2662 returns to its original position, driving the... The slider 2663 slides along the guide frame 2661. The slider 2663 drives the limiting block 2665 to move inward through the limiting arm 2664 until the limiting block 2665 locks the upper sampling sealing plate 2636, thereby achieving the limiting and fixing of the upper sampling sealing plate 2636. After the entire sampling process is completed, if it is necessary to reset the physical automatic sampling module 26, rotate the adjustment handle 2667 of the limiting component 266. The adjustment handle 2667 drives the elliptical expansion guide block 2666 in the center of the front of the guide frame 2661 to rotate. The elliptical expansion guide block 2666 generates an outward supporting force on the two limiting arms 2664 through its own arc structure, which pushes the limiting arms 2664 outward, so that the limiting block 2665 disengages from the upper sampling sealing plate 2636, releasing the limiting fixation and providing conditions for the telescopic spring 2632 to reset and the upper and lower sampling sealing plates 2634 to return to their initial positions.

[0047] After sampling, the device enters the recovery and water sample treatment stage. Rotating the handle 15 of the retractor 1 causes the retractor roller 13 to rotate clockwise, slowly retrieving the lifting cable 14 and pulling the sampling box 21 back to the water surface. During recovery, the piston sealing gasket 223 of the sampling sealing switching module 22, under the combined action of the gravity of the limiting plate 224 and the water pressure inside the sampling box 21, maintains a sealed state against the inlet 221. The limiting component 266 of the physical automatic sampling module 26 continuously fixes the upper sampling sealing plate 2636, and the air pressure inside the depressurization airbag 267 continuously provides support for the telescopic spring 2632, preventing the telescopic spring 2632 from being damaged by vibration. If a shift occurs due to movement or pressure changes, and the sampling box 21 reaches the water surface, if a water sample from the main chamber needs to be obtained, it can be directly taken out through the conventional opening structure of the sampling box 21. If a water sample needs to be obtained from the secondary sampling box 261, the limit is first released by adjusting the handle 2667 in conjunction with the elliptical guide block 2666, and then the drain valve 2631 is opened to allow the water sample to flow out from the drain valve 2631. If a thorough depressurization and cleaning of the secondary sampling box 261 is required, the depressurization vent pipe 264 is kept open to allow the gas in the depressurization bladder 267 to be slowly discharged, while also assisting in cleaning the residual water sample inside the secondary sampling box 261 to prepare for the next sampling.

[0048] This device demonstrates significant advantages during use, particularly in sampling efficiency and applicability: When powered, the solenoid valve-type exhaust valve 25 can be remotely and quickly controlled via the control module to open and close, precisely triggering sampling actions at different depths without requiring manual approach to the water body. Combined with the smooth winding and unwinding of the winding handle 15 and winding roller 13, the depth position of the sampling box 21 can be quickly adjusted, enabling rapid collection of water samples at multiple depths, significantly improving sampling efficiency and meeting large-scale sampling needs. When powered, the purely mechanical structure of the physical automatic sampling module 26 plays a crucial role. By adjusting the handwheel 2627 to preset the pressure of the telescopic springs 2632 inside different auxiliary sampling boxes 261, each auxiliary sampling box 261 corresponds to a different trigger depth. During the single-stage lowering of the sampling box 21, upon reaching the preset depth, the water pressure automatically triggers the compression of the telescopic springs 2632, causing the upper and lower sampling sealing plates 2634 to retract and form a sampling water tank. This device can automatically sample at different depths with any amount of electricity, eliminating the need for multiple samplings at different depths and solving the sampling problem in power-free environments. In addition, the pressure relief airbag 267 not only assists in depressurizing the auxiliary sampling box 261 to ensure smooth water sample entry, but also provides air pressure elastic support for the telescopic spring 2632, improving the accuracy of the sampling action. The support frame 11 and bridge-type handrail 16 of the reel 1 ensure stable operation, while the load frame 226 and load ball 227 ensure that the sampling box 21 sinks smoothly. The limiting component 266 and piston sealing gasket 223 ensure that the water sample does not leak or mix during collection and recovery. Overall, this device not only solves the problem of inaccurate water samples in deep water sampling by ordinary samplers, but also balances sampling efficiency and environmental adaptability through dual adaptation to power-free and power-free scenarios. At the same time, the pure mechanical core structure combined with a small number of electronic control components reduces the risk of failure and maintenance costs, meeting the deep water sampling needs in different scenarios.

[0049] The scope of protection of this application does not involve improvements to the electronic components of the device or equipment. Therefore, the working principles of each electronic component are not described in detail here. The electronic components in this application are all conventional electronic components used in the prior art. They are all conventional technical means in the prior art, and the application of the prior art is very mature. Therefore, they will not be elaborated here.

[0050] Of course, the present invention may have many other embodiments. Based on this embodiment, other embodiments obtained by those skilled in the art without any creative effort are all within the scope of protection of the present invention.

Claims

1. A deep-water pre-pressure sampling device, characterized in that, Includes a winding device (1), and a sampling mechanism (2) is fixedly installed at the bottom of the winding device (1). The sampling mechanism (2) includes a sampling box (21). Physical automatic sampling modules (26) are fixedly installed on the front and back of the sampling box (21) in a linear arrangement with equal spacing. A pressure tube (23) is fixedly installed on one side of the top of the sampling box (21). A manual pressurizer (24) is fixedly installed on the top of the pressure tube (23). An exhaust valve (25) is fixedly installed in the middle of one side of the pressure tube (23). A sampling sealing switching module (22) is fixedly installed in the middle of the bottom of the sampling box (21). A first pressure gauge (27) is fixedly installed at the lower end of one side of the pressure tube (23).

2. The deep-water pre-pressure sampling device according to claim 1, characterized in that, The sampling sealing switching module (22) includes a water inlet (221), which is located in the middle of the bottom of the sampling box (21). A slide rod (222) is slidably connected inside the water inlet (221), and a piston sealing gasket (223) is fixedly installed on the top of the slide rod (222). The piston sealing gasket (223) covers the top of the water inlet (221) inside the sampling box (21).

3. The deep-water pre-pressure sampling device according to claim 2, characterized in that, A limiting plate (224) is fixedly installed at the bottom of the slide bar (222) through the water inlet (221), and water inlet holes (225) are provided at equal intervals in the middle of the limiting plate (224).

4. The deep-water pre-pressure sampling device according to claim 1, characterized in that, The sampling box (21) is fixedly installed with a load-bearing frame (226) on both sides of the bottom, and a load-bearing ball (227) is fixedly installed in the middle of the bottom of the load-bearing frame (226).

5. The deep-water pre-pressure sampling device according to claim 1, characterized in that, The winding device (1) includes a support frame (11), a concave frame (12) is fixedly installed on the top of the support frame (11), a winding roller (13) is rotatably connected to the lower inner side of the concave frame (12), a lifting cable (14) is wound around the outer surface of the winding roller (13), the sampling box (21) is fixedly installed at the bottom of the lifting cable (14), a crank handle (15) is rotatably connected to one side of the concave frame (12), the end of the crank handle (15) is connected to one end of the winding roller (13) through a coupling, and a bridge-type handrail (16) is fixedly installed on the top of the concave frame (12).

6. The deep-water pre-pressure sampling device according to claim 1, characterized in that, The physical automatic sampling module (26) includes a secondary sampling box (261). The secondary sampling boxes (261) are linearly arranged at equal intervals and fixedly installed on the front and back of the sampling box (21). A pressure regulating component (262) is fixedly connected to the bottom of the secondary sampling box (261). A sampling component (263) is movably installed on the upper end of the secondary sampling box (261). A limiting component (266) is fixedly installed on the upper front end of the secondary sampling box (261).

7. The deep-water pre-pressure sampling device according to claim 6, characterized in that, The pressure regulating assembly (262) includes a lead screw (2621), a chassis (2622), and a limiting bracket (2623). The lead screw (2621) is rotatably connected to the bottom of the sampling box. A pressing plate (2624) is threaded onto the outer surface of the lead screw (2621). The pressing plate (2624) is movably connected to the inside of the sampling box. A guide tube (2625) is fixedly installed at one bottom end of the pressing plate (2624). A guide rod (2626) is slidably connected inside the guide tube (2625). The bottom of the guide rod (2626) is fixedly connected to the bottom of the sampling box. The limiting bracket (2623) is fixedly installed on the upper outer side of the sampling box. The top of the sampling assembly (263) and the upper end of the limiting frame (2623) are fitted together. The chassis (2622) is fixedly installed at the bottom of the sampling box. The bottom of the chassis (2622) is rotatably connected to an adjusting handwheel (2627). The top of the adjusting handwheel (2627) is connected to the bottom of the lead screw (2621) through a coupling. A limiting screw (2628) is threadedly connected to one side of the bottom of the adjusting handwheel (2627). Limiting holes (2629) are opened at equal intervals in a ring at the bottom of the chassis (2622). The end of the limiting screw (2628) passes through the adjusting handwheel (2627) and is inserted into the inside of a limiting hole (2629).

8. The deep-water pre-pressure sampling device according to claim 7, characterized in that, The sampling assembly (263) includes a drain valve (2631) and a telescopic spring (2632). The drain valve (2631) is fixedly installed in the center of the front of the sampling box, and the telescopic spring (2632) is movably installed in the back of the sampling box. A base block (2633) is fixedly installed on the top of the telescopic spring (2632), and a lower sampling sealing plate (2634) is fixedly installed on the top of the base block (2633). A support rod (2635) is fixedly installed on the top of the sampling box. The top of the support rod (2635) passes through the sampling box and is fixedly installed with an upper sampling sealing plate (2636). A sampling water tank is formed between the upper sampling sealing plate (2636) and the lower sampling sealing plate (2634). When the upper sampling sealing plate (2636) and the lower sampling sealing plate (2634) are in the state of retracting the sampling box, the input end of the drain valve (2631) is located between the upper sampling sealing plate (2636) and the lower sampling sealing plate (2634).

9. The deep-water pre-pressure sampling device according to claim 8, characterized in that, A second pressure gauge (265) is fixedly installed on the lower side of the sampling box, and a pressure relief pipe (264) is fixedly installed on the lower back of the sampling box. A pressure relief airbag (267) is fixedly installed at the output end of the pressure relief pipe (264), and the pressure relief airbag (267) is located inside the sampling box (21).

10. The deep-water pre-pressure sampling device according to claim 9, characterized in that, The limiting component (266) includes a guide frame (2661), which is fixedly installed on the upper front of the sampling box. Limiting springs (2662) are fixedly connected to both ends of the guide frame (2661). A slider (2663) is fixedly installed on the inner end of the limiting spring (2662). A limiting arm (2664) is fixedly installed on the outer side of the slider (2663). A limiting arm (2664) is fixedly installed on the outer end of the limiting arm (2664). The limiting block (2665) has a right-angled trapezoidal cross-section. The inclined surface of the limiting block (2665) is located on the inner top side. An elliptical opening guide block (2666) is rotatably connected to the center of the front of the guide frame (2661). An adjusting handle (2667) is fixedly installed on the front of the elliptical opening guide block (2666). The elliptical opening guide block (2666) and two limiting arms (2664) are connected by a transmission.

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