A water conservancy and hydrological monitoring device and method

Abstract

The present invention discloses a water conservancy and hydrological monitoring device and method in the technical field of water conservancy and hydrological monitoring, including a monitoring ship and a winding mechanism. A fixing frame is installed on the winding mechanism, a depth gauge and a wireless control module are installed on the fixing frame, a sampling cylinder is clamped inside the fixing frame, and a cable is fixedly connected to the top of the fixing frame. By setting a sampling mechanism, after the sampling cylinder extends into the water, the sampling operation can be automatically completed without complex operations by the operator. Since a depth gauge and a wireless control module are installed on the fixing frame, the user can clearly know the depth where the sampling cylinder is located. After the depth is determined, the user can only control the sampling cylinder to automatically complete the sampling operation on the monitoring ship through the wireless control module. After the sampling cylinder finishes sampling, it will automatically seal and store the water sample, and the user can disassemble it for carrying and transportation for subsequent detection and use.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy and hydrological monitoring, and particularly relates to a water conservancy and hydrological monitoring device and method. Background Art

[0002] Water conservancy and hydrological monitoring devices are equipment used to monitor the hydrological characteristics of waters such as rivers, lakes, and reservoirs. They can timely reflect the hydrological conditions of each water area, so that relevant departments can make corresponding arrangements to prevent the occurrence of flood disaster accidents. For the detection of large water areas such as rivers and lakes, staff need to drive small boats to specific waters, and then use sampling devices to sample the deep water. Then, the sampled water is sent to a monitoring agency for testing and processing. However, for deep waters, due to the relatively large depth, when operating the sampling equipment to extract water samples, it is relatively laborious to operate due to the influence of depth. Moreover, generally, the samples taken need to be separately filled into special containers for sealed transportation. In this way, during the process of the water samples being transferred back and forth, the sampling efficiency is reduced, and the original nature of the water quality is easily damaged. Therefore, the invention provides a water conservancy and hydrological monitoring device and method to solve the above problems. Summary of the Invention

[0003] The purpose of the invention is to provide a water conservancy and hydrological monitoring device and method. By setting a sampling mechanism, after the sampling cylinder extends into the water, the sampling operation can be automatically completed without complex operations by the operator. When the depth is determined, the user only needs to control the sampling cylinder to automatically complete the sampling operation through a wireless control module on the monitoring ship. When the sampling cylinder finishes sampling, it will automatically seal and store the water sample, and the user can disassemble it by himself for carrying and transportation, so as to facilitate subsequent testing and use, and solve the problem of low efficiency of the current hydrological monitoring device when sampling deep water.

[0004] The invention solves the above technical problems through the following technical solutions. The invention includes a monitoring ship and a winding mechanism. A fixing frame is installed on the winding mechanism. A depth gauge and a wireless control module are installed on the fixing frame. A sampling cylinder is clamped in the fixing frame. A cable is fixedly connected to the top of the fixing frame. The winding mechanism is used for winding the cable at the top of the fixing frame; a sampling mechanism, which is used to assist the operator in sampling, and the sampling mechanism is respectively connected to the sampling cylinder and the fixing frame; the sampling mechanism includes a base, a pull rod, a piston, an upper fixing seat and a lower fixing seat. The upper fixing seat and the lower fixing seat are respectively fixedly connected to the top and bottom of the fixing frame. The base is screwed to the bottom of the sampling cylinder. The pull rod is inserted into the base. The piston is fixedly connected to one end of the pull rod.

[0005] Optionally, curved surface bending structures protruding outward are provided at both the bottom and the top of the fixing frame. A lightweight slot is provided on the upper fixing seat. Side clips are symmetrically installed on both sides of the fixing frame. The side clips are of elastic structure, and the ends of the side clips have flanging structures facing outward. A one-way valve is installed on the sampling cylinder, and a baffle corresponding to the position of the one-way valve is installed on the fixing frame. The baffle is of a mesh structure.

[0006] Optionally, a positioning block is fixedly connected to the bottom of the upper fixing seat. An adapting portion is provided at the middle position of the positioning block. A round convex block adapted to the contour of the adapting portion is fixedly connected to the top of the sampling cylinder. A guiding groove is provided on one side of the positioning block. The positioning block is of a segmented elastic structure, and a support skeleton is installed inside the positioning block.

[0007] Optionally, a plug is fixedly connected to the top of the lower fixing seat. An electromagnet is fixedly connected to one side of the plug. A limiting block corresponding to the position of the plug is fixedly connected to the bottom of the base. A slot adapted to the size of the plug is provided on the limiting block.

[0008] Optionally, a triangular elastic block is slidably connected inside the limiting block. One side of the triangular elastic block is of a triangular structure and the other side is of a curved surface elastic structure. A magnetic attraction piece is fixedly connected to the inner wall of the triangular elastic block. An avoidance groove corresponding to the position of the magnetic attraction piece is provided on the curved surface elastic side of the triangular elastic block. One end of the bottom of the pull rod is fixedly connected to a triangular block.

[0009] Optionally, mounting plates are fixedly connected to both the top of the base and the top of the pull rod. Mounting grooves are provided on the mounting plates. A piston is clamped on the top of the mounting plate located on the pull rod. A mounting block adapted to the size of the mounting groove is fixedly connected to the bottom of the piston. The piston is made of rubber.

[0010] Optionally, an elastic frame is installed between the mounting plate at the top of the base and the mounting plate at the top of the pull rod. The elastic frame is of a curved surface elastic structure and is made of plastic. Plug plates are fixedly connected to both ends of the elastic frame. Grooves adapted to the contours of the plug plates are provided on the mounting plates. The elastic frame is fixed to the mounting plates through the plug plates.

[0011] Optionally, a slider is fixedly connected to the outer wall of the piston. A sliding groove corresponding to the position of the slider is provided on the inner wall of the sampling cylinder. Scales are provided on the outer wall of the sampling cylinder.

[0012] The present invention also provides a method for a water conservancy and hydrological monitoring device, including the following steps:

[0013] Step 1: Assemble the sampling tube to the fixing frame: let the limit block at the bottom of the base be sleeved on the plug block at the top of the lower fixing seat, then move the upper fixing seat to let the round protrusion slide into the adapter along the guide groove, when the plug block is inserted into the slot on the limit block, and the round protrusion is clamped in the adapter in the positioning block, the assembly of the sampling tube is completed;

[0014] Step 2: Place the sampling tube into the water area: The user adjusts the reeling mechanism to retract the cable on the top of the fixed frame, allowing the fixed frame to sink into the water under its own gravity. The user determines the depth of the sampling tube based on the depth gauge on the fixed frame.

[0015] Step 3, sampling processing: when the sampling tube reaches the specified depth, the user energizes the electromagnet through the wireless control module. After power is turned on, the electromagnet attracts the magnetic sheet inside the triangular spring block. Under the adsorption effect, the triangular spring block avoids the triangular block on the pull rod. Under the pulling force of the elastic frame, the piston moves toward the base. During the movement of the piston, negative pressure is generated in the sampling tube. As the negative pressure increases, the water outside the sampling tube enters the sampling tube from the one-way valve and is stored in the sampling tube under the sealing effect of the piston.

[0016] Step 4, retract the sampling tube: After the sampling is completed, the user readjusts the winding mechanism to take the sampling tube out of the water. After the sampling tube is taken out, follow the reverse operation of step 1 to remove the sampling tube from the fixed frame. After the sampling tube is removed, the water sample inside the sampling tube can be carried and transported. When the water sample needs to be taken out, screw the base and remove the base from the bottom of the sampling tube to pour out the sample in the sampling tube.

[0017] Compared with the prior art, the beneficial effect of the present invention is that: the present application sets up a sampling mechanism, so that when the sampling tube is inserted into the water, the sampling operation can be automatically completed without the operator performing complicated operations. Since a depth gauge and a wireless control module are installed on the fixed frame, the user can clearly understand the depth of the sampling tube. When the depth is determined, the user only needs to control the sampling tube through the wireless control module on the monitoring ship to automatically complete the sampling operation. When the sampling tube finishes sampling, the water sample will be automatically sealed and preserved, and the user can disassemble it by himself to carry and transport it for subsequent detection and use.

[0018] By setting up a fixing frame, the overall contour of the fixing frame is an elastic structure, and the fixing frame has an elastic tendency to clamp toward the middle position. Such a setting allows the sampling tube to be installed and fixed with the help of the elastic action of the fixing frame. Since the sizes of the plug block and the slot are compatible, the user can first insert the plug block into the slot when installing the sampling tube, and limit the plug block and the slot to each other to achieve a pre-fixing effect on the sampling tube; since the positioning block is a segmented elastic structure and has an adapter portion in the middle that is compatible with the contour of the round convex block, the round convex block is allowed to slide into the adapter portion along the guide groove, and the sampling tube can be locked and fixed with the help of the positioning block.

[0019] By providing side clamps and baffles, the side clamps can clamp and limit the outer wall of the sampling tube, thereby improving the stability of the sampling tube. Since the end of the side clamp has an outward flange structure, the user can use the flange structure to bend the side clamp outward during the installation of the sampling tube, thereby improving the efficiency of the sampling tube assembly process. The baffle is provided at the water inlet of the sampling tube and has a mesh structure. Such an arrangement prevents impurities from blocking the water inlet when the sampling tube absorbs water under the blocking effect of the baffle.

[0020] By setting the pull rod, piston, triangular block and triangular spring block, when the user continues to push the pull rod into the sampling tube, the inclined surface on the triangular block will squeeze the inclined surface on the triangular spring block, and in the process of squeezing, the triangular spring block will be deformed with the help of the guidance of the inclined surface. After the deformation, the triangular spring block will shrink into the limit block until the triangular block passes over the triangular spring block. At this time, the triangular spring block will reset under the action of elasticity, and the plane of the top of the reset triangular spring block will fit on the plane of the bottom of the triangular block. When the user stops pushing the pull rod, the pull rod will be pushed in the opposite direction under the elastic action of the elastic frame until the plane of the bottom of the triangular block hits the inclined surface at the top of the triangular spring block. At this time, the triangular block cannot pass through the triangular spring block under the blocking action of the triangular spring block, so the pull rod cannot continue to slide out of the sampling tube. This arrangement ensures that when the piston is pushed to the sampling tube, the pull rod will be pushed in the opposite direction until the bottom of the triangular block hits the inclined surface at the top of the triangular spring block. After the sample is put into the tube, the pull rod can be limited by the triangular spring block, so that the elastic frame is consistently in a stretched loading state, and the pull rod also keeps a tendency to slide outward. The operator energizes the electromagnet through the wireless control module. Since the positions of the electromagnet and the magnetic sheet correspond, the magnetic sheet will move toward the electromagnet under the action of the magnetic attraction force after power is turned on. Since an avoidance groove corresponding to the position of the magnetic sheet is provided on the limit block, the magnetic sheet can slide smoothly toward the electromagnet. During the sliding process of the magnetic sheet, the triangular spring block will cause the deformation and shrink into the limit block. At this time, the triangular spring block will not block and limit the triangular block. The pull rod will pull the piston to slide outside the sampling tube under the elastic force of the elastic frame, and allow the sampling tube to complete automatic sampling during the sliding process. Such a setting is reasonable and ingenious, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a three-dimensional structure schematic diagram of a water conservancy and hydrological monitoring device;

[0022] Figure 2 It is a three-dimensional structure schematic diagram of the first perspective of the fixing frame, sampling cylinder and sampling mechanism;

[0023] Figure 3 It is a three-dimensional structure schematic diagram of the second perspective of the fixing frame, sampling cylinder and sampling mechanism;

[0024] Figure 4 It is Figure 3 The enlarged three-dimensional structure schematic diagram of part A in

[0025] Figure 5 It is a three-dimensional structure schematic diagram of the third perspective of the fixing frame, sampling cylinder and sampling mechanism;

[0026] Figure 6 It is Figure 5 The enlarged three-dimensional structure schematic diagram of part B in

[0027] Figure 7 It is an enlarged three-dimensional structure schematic diagram of the fixing frame;

[0028] Figure 8 It is an enlarged three-dimensional structure schematic diagram of the sampling cylinder;

[0029] Figure 9 It is a sectional three-dimensional structure schematic diagram of the sampling cylinder and the positioning block;

[0030] Figure 10 It is an enlarged three-dimensional structure schematic diagram of the base, pull rod, piston and elastic frame;

[0031] Figure 11 It is Figure 10 The exploded three-dimensional structure schematic diagram of

[0032] Figure 12 It is Figure 10 The top view structure schematic diagram of

[0033] Figure 13 It is a sectional structure schematic diagram of the cooperation between the pull rod and the fixing frame and the base before the pull rod is locked;

[0034] Figure 14 It is Figure 13 The enlarged three-dimensional structure schematic diagram of part C in

[0035] Figure 15 It is a sectional structure schematic diagram of the cooperation between the pull rod and the fixing frame and the base after the pull rod is locked;

[0036] Figure 16 It is Figure 15 The enlarged three-dimensional structure schematic diagram of part D in

[0037] Figure 17Schematic enlarged structure diagram of the draw bar after being locked and cooperating with the fixing frame and the base;

[0038] Figure 18 Schematic three-dimensional structure diagram of the triangular elastic block and the limit block.

[0039] The numbers in the figure indicate:

[0040] 1 - Monitoring ship; 2 - Rewinding mechanism; 3 - Fixing frame; 301 - Upper fixing seat; 302 - Lower fixing seat; 303 - Side clip; 304 - Stop piece; 305 - Positioning block; 306 - Adaptation part; 307 - Guide groove; 308 - Insert block; 309 - Electromagnet; 4 - Sampling cylinder; 401 - Circular convex block; 402 - Check valve; 5 - Base; 501 - Limit block; 502 - Slot; 503 - Triangular elastic block; 504 - Magnetic attraction piece; 505 - Avoidance groove; 6 - Draw bar; 601 - Triangular block; 602 - Mounting plate; 603 - Mounting groove; 7 - Piston; 701 - Mounting block; 8 - Elastic frame; 801 - Insert plate. Specific implementation mode

[0041] The following further elaborates on the above and other technical features and advantages of the present invention with reference to the accompanying drawings.

[0042] This embodiment provides a technical solution: a water conservancy and hydrological monitoring device and method, as Figures 1 to 8 shown, including a monitoring ship 1 and a rewinding mechanism 2. A fixing frame 3 is installed on the rewinding mechanism 2. A depth gauge and a wireless control module are installed on the fixing frame 3. A sampling cylinder 4 is clamped in the fixing frame 3. A cable is fixedly connected to the top of the fixing frame 3. The rewinding mechanism 2 is used to wind the cable at the top of the fixing frame 3; a sampling mechanism, the sampling mechanism is used to assist the operator in sampling, and the sampling mechanism is respectively connected to the sampling cylinder 4 and the fixing frame 3; the sampling mechanism includes a base 5, a draw bar 6, a piston 7, an upper fixing seat 301 and a lower fixing seat 302. The upper fixing seat 301 and the lower fixing seat 302 are respectively fixedly connected to the top and bottom of the fixing frame 3. The base 5 is screwed to the bottom of the sampling cylinder 4. The draw bar 6 is inserted into the base 5. The piston 7 is fixedly connected to one end of the draw bar 6. For the device provided in this application, by setting the sampling mechanism, after the sampling cylinder 4 extends into the water, the sampling operation can be automatically completed without complex operations by the operator. Since a depth gauge and a wireless control module are installed on the fixing frame 3 (both are publicly known as prior art in this application and will not be elaborated too much), the user can clearly know the depth where the sampling cylinder 4 is located. When the depth is determined, the user only needs to operate the sampling cylinder 4 to automatically complete the sampling operation through the wireless control module on the monitoring ship 1. When the sampling cylinder 4 finishes sampling, it will automatically seal and store the water sample, and the user can disassemble it for carrying and transportation for subsequent testing.

[0043] In this embodiment, asFigures 1 to 7 As shown, curved surface bending structures protruding outward are provided at both the bottom and the top of the fixing bracket 3. Lightweight grooves are formed in the upper fixing seat 301. Side clips 303 are symmetrically installed on both sides of the fixing bracket 3. The side clips 303 are elastic structures, and the ends of the side clips 303 have flanging structures facing outward. A one-way valve 402 is installed on the sampling cylinder 4. A baffle 304 corresponding to the position of the one-way valve 402 is installed on the fixing bracket 3. The baffle 304 is a mesh structure. A positioning block 305 is fixedly connected to the bottom of the upper fixing seat 301. An adapting portion 306 is provided at the middle position of the positioning block 305. A round convex block 401 adapted to the contour of the adapting portion 306 is fixedly connected to the top of the sampling cylinder 4. A guiding groove 307 is formed on one side of the positioning block 305. The positioning block 305 is a segmented elastic structure, and a support skeleton is installed inside the positioning block 305. A plug 308 is fixedly connected to the top of the lower fixing seat 302. A limiting block 501 corresponding to the position of the plug 308 is fixedly connected to the bottom of the base 5. A slot 502 adapted to the size of the plug 308 is formed on the limiting block 501. The sampling cylinder 4 can be freely disassembled and assembled on the fixing bracket 3. Specifically, since curved surface bending structures protruding outward are provided at both the bottom and the top of the fixing bracket 3, the overall contour of the fixing bracket 3 is an elastic structure, and the fixing bracket 3 has an elastic tendency to clamp towards the middle position. Such a setting enables the sampling cylinder 4 to be installed and fixed by means of the elastic action of the fixing bracket 3. Since the sizes of the plug 308 and the slot 502 are adapted to each other, when the user installs the sampling cylinder 4, the plug 308 can be first inserted into the slot 502, and the mutual limitation between the plug 308 and the slot 502 can achieve the pre-fixing effect on the sampling cylinder 4. Since the positioning block 305 is a segmented elastic structure and has an adapting portion 306 at the middle adapted to the contour of the round convex block 401, by sliding the round convex block 401 into the adapting portion 306 along the guiding groove 307, the sampling cylinder 4 can be locked and fixed by means of the positioning block 305.

[0044] Furthermore, the positioning block 305 is not only an elastic structure but also has a supporting frame arranged inside, so that the positioning block 305 can not only install and fix the sampling tube 4 with the help of elastic force, but also can play a certain buffering effect, thereby improving the safety of the sampling tube 4. Secondly, side clamps 303 are also installed on both sides of the fixing frame 3, and the side clamps 303 can clamp and limit the outer wall of the sampling tube 4, thereby improving the stability of the sampling tube 4. Since the end of the side clamp 303 has an outward flange structure, the user can use the flange structure to move the sampling tube 4 in the process of installing the sampling tube 4. The side clamp 303 is bent outward to improve the efficiency of the sampling tube 4 assembly process. The above-mentioned structure can not only quickly realize the fast disassembly and assembly between the fixing frame 3 and the sampling tube 4, but also the fixing frame 3 can buffer and protect the sampling tube 4, improve the safety of the sampling tube 4 during use, and ensure the integrity of the sample. In addition, a blocking piece 304 is also arranged on the fixing frame 3. The blocking piece 304 is arranged at the water inlet of the sampling tube 4 and has a mesh structure. Such an arrangement prevents impurities from blocking the water inlet when the sampling tube 4 absorbs water under the blocking effect of the blocking piece 304.

[0045] In this embodiment, if Figures 1 to 12As shown, mounting plates 602 are fixedly connected to the top of the base 5 and the top of the pull rod 6. Mounting grooves 603 are formed in the mounting plates 602. A piston 7 is clamped on the top of the mounting plate 602 located on the pull rod 6. A mounting block 701 that matches the size of the mounting groove 603 is fixedly connected to the bottom of the piston 7. The piston 7 is made of rubber. An elastic frame 8 is installed between the mounting plate 602 at the top of the base 5 and the mounting plate 602 at the top of the pull rod 6. The elastic frame 8 is a curved elastic structure and is made of plastic. Plug plates 801 are fixedly connected to both ends of the elastic frame 8. Grooves adapted to the profiles of the plug plates 801 are formed in the mounting plates 602. The elastic frame 8 is fixed to the mounting plate 602 through the plug plates 801. A slider is fixedly connected to the outer wall of the piston 7. A chute corresponding to the position of the slider is formed in the inner wall of the sampling cylinder 4. A scale is provided on the outer wall of the sampling cylinder 4. The piston 7 is plugged and fixed to the mounting plate 602 at the top of the pull rod 6 through the mounting block 701. Since a slider is fixedly connected to the outer wall of the piston 7 and a chute corresponding to the position of the slider is formed in the inner wall of the sampling cylinder 4, the piston 7 can only slide in the sampling cylinder 4 and cannot rotate, thus ensuring that the piston 7 will not be misaligned during the up and down sliding process, improving the sealing performance between the piston 7 and the sampling cylinder 4. Since mounting plates 602 are fixedly connected to the top of the base 5 and the top of the pull rod 6, and the elastic frame 8 is fixed between the two mounting plates 602, when the user pushes and pulls the pull rod 6 to make the piston 7 slide into the sampling cylinder 4, the elastic frame 8 will be stretched and deformed, and a reverse pulling force will be applied to the piston 7 during the deformation process. When the piston 7 slides inward, the user can open the one-way valve 402 to allow external air to enter the sampling cylinder 4 to ensure that the pressure inside the sampling cylinder 4 is the same as the external pressure. When the user stops pulling the pull rod 6, the piston 7 will slide in the reverse direction under the elastic action of the elastic frame 8, and the pressure inside the sampling cylinder 4 will be increased during the sliding process. When the pressure is large enough, external air will enter the sampling cylinder 4 from the one-way valve 402. Through such a setting, when the sampling cylinder 4 is placed in water, water can be sampled. The elastic frame 8 and the two mounting plates 602 are fixed by plugging with the plug plates 801. Such an installation method is not only simple in structure but also convenient to disassemble and assemble, improving the practicability of the elastic frame 8 and ensuring that the sampling cylinder 4 can be disassembled, tilted and disinfected after each use.

[0046] In this embodiment, as Figures 13 to 18As shown, an electromagnet 309 is fixedly connected to one side of the insertion block 308. A triangular elastic block 503 is slidably connected within the limit block 501. One side of the triangular elastic block 503 is of a triangular structure and the other side is a curved surface elastic structure. A magnetic attraction sheet 504 is fixedly connected to the inner wall of the triangular elastic block 503. An avoidance groove 505 corresponding to the position of the magnetic attraction sheet 504 is formed on the curved surface elastic side of the triangular elastic block 503. One end of the bottom of the pull rod 6 is fixedly connected to a triangular block 601. When the user continuously pushes the pull rod 6 into the sampling cylinder 4, the pull rod 6 will drive the piston 7 to move into the sampling cylinder 4 until the triangular block 601 at the end of the pull rod 6 touches the triangular elastic block 503 (as Figure 13 and Figure 14 shown). At this time, the inclined surfaces of the triangular block 601 and the triangular elastic block 503 are in mutual contact. When the user continues to push the pull rod 6 into the sampling cylinder 4, the inclined surface of the triangular block 601 will squeeze the inclined surface of the triangular elastic block 503, and during the squeezing process, the triangular elastic block 503 will be deformed by means of the guidance of the inclined surface. After the triangular elastic block 503 is deformed, it will contract into the limit block 501 until the triangular block 601 passes over the triangular elastic block 503. At this time, under the elastic action, the triangular elastic block 503 will reset. The plane at the top of the reset triangular elastic block 503 will fit on the plane at the bottom of the triangular block 601. When the user stops pushing the pull rod 6, under the elastic action of the elastic frame 8, the pull rod 6 will be pushed in the reverse direction until the plane at the bottom of the triangular block 601 touches the inclined surface at the top of the triangular elastic block 503 (as Figure 15 and Figure 16 shown). At this time, under the blocking action of the triangular elastic block 503, the triangular block 601 cannot pass through the triangular elastic block 503, so the pull rod 6 cannot continue to slide out of the sampling cylinder 4. Such a setting ensures that after the piston 7 is pushed into the sampling cylinder 4, the pull rod 6 can be limited by the triangular elastic block 503, so that the elastic frame 8 is always in the stretched state, and the pull rod 6 always maintains the tendency to slide outwards.

[0047] After the sampling cylinder 4 is inserted into the water area, the operator makes the electromagnet 309 energized through the wireless control module. Since the positions of the electromagnet 309 and the magnetic attraction sheet 504 correspond to each other, after being energized, the magnetic attraction sheet 504 will move towards the electromagnet 309 under the action of magnetic attraction. Since an avoidance groove 505 corresponding to the position of the magnetic attraction sheet 504 is formed on the limit block 501, the magnetic attraction sheet 504 can smoothly slide towards the electromagnet 309. During the sliding process of the magnetic attraction sheet 504, the triangular elastic block 503 will be deformed and contract into the limit block 501. At this time, the triangular elastic block 503 will not block and limit the triangular block 601, and the pull rod 6 will pull the piston 7 to slide out of the sampling cylinder 4 under the elastic force of the elastic frame 8, and the sampling cylinder 4 will complete automatic sampling during the sliding process. Such a setting is reasonable and ingenious, and the cost is low.

[0048] In this application, since the piston 7, the base 5, and the elastic frame 8 are all freely detachable structures, such a setting can ensure that the internal structure of the sampling cylinder 4 can be disassembled and cleaned after use, thereby improving the service life of the device. Moreover, after the sampling is completed, the user can remove the sampling cylinder 4 from the fixing frame 3 and then install a new sampling cylinder 4 to sample the water in different areas, thereby realizing the function of multiple samplings.

[0049] According to the working principle provided by the present invention, before the sampling cylinder 4 is used, the position of the piston 7 needs to be adjusted first. Since mounting plates 602 are fixedly connected to the top of the base 5 and the top of the pull rod 6, and the elastic frame 8 is fixed between the two mounting plates 602, when the user pushes and pulls the pull rod 6 to make the piston 7 slide into the sampling cylinder 4, the elastic frame 8 will be stretched and deformed, and a reverse pulling force will be applied to the piston 7 during the deformation process. When the piston 7 slides inward, the user can open the one-way valve 402 to allow the outside air to enter the sampling cylinder 4 to ensure that the air pressure inside the sampling cylinder 4 is the same as that outside. When the user continuously pushes the pull rod 6 into the sampling cylinder 4, the pull rod 6 will drive the piston 7 to move into the sampling cylinder 4 until the triangular block 601 at the end of the pull rod 6 abuts against the triangular elastic block 503. The inclined surface of the triangular block 601 abuts against the inclined surface on the triangular elastic block 503. When the user continues to push the pull rod 6 into the sampling cylinder 4, the inclined surface of the triangular block 601 will squeeze the inclined surface of the triangular elastic block 503, and during the squeezing process, the triangular elastic block 503 will be deformed by means of the guidance of the inclined surface. After the triangular elastic block 503 is deformed, it will shrink into the limit block 501 until the triangular block 601 passes over the triangular elastic block 503. At this time, under the elastic action, the triangular elastic block 503 will reset, and the plane at the top of the reset triangular elastic block 503 will fit against the plane at the bottom of the triangular block 601. When the user stops pushing the pull rod 6, the elastic frame 8 will push the pull rod 6 in the reverse direction until the plane at the bottom of the triangular block 601 abuts against the inclined surface at the top of the triangular elastic block 503. At this time, under the blocking action of the triangular elastic block 503, the triangular block 601 cannot pass through the triangular elastic block 503, so the pull rod 6 cannot continue to slide out of the sampling cylinder 4. When the pull rod 6 is locked, the position adjustment of the piston 7 is completed.

[0050] After the piston 7 is adjusted, the user first allows the limit block 501 at the bottom of the base 5 to be sleeved on the plug block 308 at the top of the lower fixed seat 302. Since the sizes of the plug block 308 and the slot 502 are compatible, the user can first insert the plug block 308 into the slot 502 when installing the sampling tube 4, so that the plug block 308 and the slot 502 limit each other to achieve a pre-fixing effect on the sampling tube 4, and then bend the upper fixed seat 301 to allow the round protrusion 401 to slide into the adapter portion 306 along the guide groove 307. Since the positioning block 305 is a segmented elastic structure and has an adapter portion 306 in the middle that is compatible with the contour of the round protrusion 401, the round protrusion 401 is allowed to slide into the adapter portion 306 along the guide groove 307, which can not only lock and fix the sampling tube 4 with the help of the positioning block 305, but also the positioning block 305 can have a certain buffering effect on the sampling tube 4, thereby improving the safety of the sampling tube 4.

[0051] When the sampling tube 4 is fixed, the user adjusts the winding mechanism 2 to retract and release the cable on the top of the fixing frame 3 to allow the fixing frame 3 to sink into the water under its own gravity. The user determines the depth of the sampling tube 4 based on the depth gauge on the fixing frame 3. When the sampling tube 4 reaches the specified depth, the user energizes the electromagnet 309 through the wireless control module. Since the positions of the electromagnet 309 and the magnetic suction piece 504 correspond to each other, the magnetic suction piece 504 will move toward the electromagnet 309 under the action of magnetic attraction after power is turned on. Since the avoidance groove 505 corresponding to the position of the magnetic suction piece 504 is provided on the limit block 501, the magnetic suction piece 504 can slide smoothly toward the electromagnet 309. During the sliding process of the magnetic suction piece 504, the triangular spring block 503 will be deformed and contracted to the limit block. 501, at this time the triangular spring block 503 will not block and limit the triangular block 601, and the pull rod 6 will pull the piston 7 to slide outside the sampling tube 4 under the elastic force of the elastic frame 8. During the movement of the piston 7, negative pressure is generated in the sampling tube 4. As the negative pressure increases, the water outside the sampling tube 4 enters the sampling tube 4 from the one-way valve 402 and is stored in the sampling tube 4 under the sealing action of the piston 7. After the sampling is completed, the user readjusts the winding mechanism 2 to take the sampling tube 4 out of the water. After the sampling tube 4 is taken out, the sampling tube 4 is removed from the fixed frame 3 in the reverse operation of step 1. After the sampling tube 4 is removed, the water sample inside the sampling tube 4 can be carried and transported. When the water sample needs to be taken out, the base 5 is screwed and the base 5 is removed from the bottom of the sampling tube 4 to pour out the sample in the sampling tube 4.

[0052] The above description is only a preferred embodiment of the present invention, which is only illustrative and not restrictive of the present invention. Those skilled in the art understand that many changes, modifications, and even equivalences may be made to the present invention within the spirit and scope defined by the claims of the present invention, but all of them will fall within the scope of protection of the present invention.

Claims

1. A water conservancy and hydrological monitoring device, comprising a monitoring ship and a winding mechanism, characterized in that, A fixed frame is installed on the winding mechanism. A depth gauge and a wireless control module are installed on the fixed frame. A sampling cylinder is clamped inside the fixed frame. A cable is fixedly connected to the top of the fixed frame. The winding mechanism is used to wind the cable at the top of the fixed frame; A sampling mechanism, which is used to assist the operator in sampling and is respectively connected to the sampling cylinder and the fixed frame; The sampling mechanism includes a base, a pull rod, a piston, an upper fixed seat and a lower fixed seat. The upper fixed seat and the lower fixed seat are respectively fixedly connected to the top and bottom of the fixed frame. The base is screwed to the bottom of the sampling cylinder. The pull rod is inserted into the base. The piston is fixedly connected to one end of the pull rod; An insertion block is fixedly connected to the top of the lower fixed seat. An electromagnet is fixedly connected to one side of the insertion block. A limit block corresponding to the position of the insertion block is fixedly connected to the bottom of the base. A slot adapted to the size of the insertion block is opened on the limit block; A triangular elastic block is slidably connected inside the limit block. One side of the triangular elastic block is a triangular structure and the other side is a curved surface elastic structure. A magnetic attraction sheet is fixedly connected to the inner wall of the triangular elastic block. An avoidance groove corresponding to the position of the magnetic attraction sheet is opened on the curved surface elastic side of the triangular elastic block. A triangular block is fixedly connected to the bottom end of the pull rod; Mounting plates are fixedly connected to the top of the base and the top of the pull rod respectively. Mounting grooves are opened on the mounting plates. A piston is clamped on the top of the mounting plate on the pull rod. A mounting block adapted to the size of the mounting groove is fixedly connected to the bottom of the piston. The piston is made of rubber; An elastic frame is installed between the mounting plate at the top of the base and the mounting plate at the top of the pull rod. The elastic frame is a curved surface elastic structure and is made of plastic. Plug plates are fixedly connected to both ends of the elastic frame. Grooves adapted to the contour of the plug plates are opened on the mounting plates. The elastic frame is fixed to the mounting plates through the plug plates.

2. The water conservancy and hydrological monitoring device according to claim 1, characterized in that Curved surface bending structures protruding outwards are arranged at the bottom and top of the fixed frame. A lightweight groove is opened on the upper fixed seat. Side clamping pieces are symmetrically installed on both sides of the fixed frame. The side clamping pieces are elastic structures. The ends of the side clamping pieces have flanging structures facing outwards. A one-way valve is installed on the sampling cylinder. A baffle is installed on the fixed frame corresponding to the position of the one-way valve. The baffle is a mesh structure.

3. The water conservancy and hydrological monitoring device according to claim 1, characterized in that, A positioning block is fixedly connected to the bottom of the upper fixed seat. An adapting part is arranged at the middle position of the positioning block. A round convex block adapted to the contour of the adapting part is fixedly connected to the top of the sampling cylinder. A guiding groove is opened on one side of the positioning block. The positioning block is a segmented elastic structure. A support skeleton is installed inside the positioning block.

4. The water conservancy and hydrological monitoring device according to claim 1, wherein, A slider is fixedly connected to the outer wall of the piston. A sliding groove corresponding to the position of the slider is opened on the inner wall of the sampling cylinder. Scales are arranged on the outer wall of the sampling cylinder.

5. A method for a water conservancy and hydrological monitoring device as described in any one of claims 1-4, characterized in that, Including the following steps: Step 1: Assemble the sampling tube to the fixing frame: let the limit block at the bottom of the base be sleeved on the plug block at the top of the lower fixing seat, then move the upper fixing seat to let the round protrusion slide into the adapter along the guide groove, when the plug block is inserted into the slot on the limit block, and the round protrusion is clamped in the adapter in the positioning block, the assembly of the sampling tube is completed; Step 2: Place the sampling tube into the water area: The user adjusts the reeling mechanism to retract the cable on the top of the fixed frame, allowing the fixed frame to sink into the water under its own gravity. The user determines the depth of the sampling tube based on the depth gauge on the fixed frame. Step 3, sampling process: when the sampling tube reaches the specified depth, the user energizes the electromagnet through the wireless control module. After energization, the electromagnet attracts the magnetic sheet inside the triangular spring block. Under the adsorption effect, the triangular spring block avoids the triangular block on the pull rod. Under the pulling force of the elastic frame, the piston moves toward the base. During the movement of the piston, negative pressure is generated in the sampling tube. As the negative pressure increases, the water outside the sampling tube enters the sampling tube from the one-way valve and is stored in the sampling tube under the sealing effect of the piston. Step 4, retract the sampling tube: After the sampling is completed, the user readjusts the winding mechanism to take the sampling tube out of the water. After the sampling tube is taken out, follow the reverse operation of step 1 to remove the sampling tube from the fixed frame. After the sampling tube is removed, the water sample inside the sampling tube can be carried and transported. When the water sample needs to be taken out, screw the base and remove the base from the bottom of the sampling tube to pour out the sample in the sampling tube.

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