Water conservancy water quality monitoring and sampling device and method

Abstract

The invention discloses a water conservancy water quality monitoring and sampling device and method, and relates to the technical field of water quality monitoring and sampling, the water conservancy water quality monitoring and sampling device comprises a sampling barrel, a hollow pipe is mounted in the sampling barrel, a plurality of partition plates are arranged on the outer wall of the hollow pipe at intervals, and an inner cavity of the sampling barrel is divided into a plurality of water storage cavities through the partition plates; a water flowing opening communicated with the water storage cavity is formed in the wall face of the hollow pipe in a penetrating mode, a water inlet hole communicated with the water storage cavity is formed in the outer wall of the hollow pipe, a first mesh plate is installed on the bottom end face of the hollow pipe, and a blocking assembly used for blocking the water inlet hole and the first mesh plate is arranged on the outer wall of the sampling barrel; the sliding pipe is of a hollow circular pipe structure with the upper end and the lower end sealed. Layered collection of water samples at different depths in the process of lowering the equipment once is realized, and frequent closing of a water pump, readjustment of the equipment height and taking out of samples in a bottle like traditional equipment are not needed, so that the time and labor cost are greatly saved, and the working efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality monitoring and sampling, and specifically to a water conservancy water quality monitoring and sampling device and method. Background Art

[0002] In the field of domestic sewage treatment, accurate and effective monitoring of sewage is crucial. Long-term and precise monitoring depends on scientific and reasonable sampling operations. Currently, common sewage sampling equipment generally operates by using a lifting device to drive a bottle body deep into the sewage. Specifically, the bottle body moves downward under the drive of the lifting device. When it reaches the predetermined depth position, a water pump is started to extract sewage, thereby completing one sampling.

[0003] However, this traditional sewage sampling equipment has significant defects. It cannot conveniently achieve stratified sampling of sewage. When the actual requirement is to obtain sewage samples in layers, the staff has to frequently repeat the cumbersome operation process of closing the water pump, readjusting the height of the bottle body, and then opening the water pump. This process not only greatly wastes the time and energy of the staff, reduces work efficiency, but also after each sampling, the samples already obtained in the bottle body need to be taken out, further increasing the complexity and time cost of the operation.

[0004] In view of this, the present application is specifically proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a water conservancy water quality monitoring and sampling device and method to solve the problems raised in the above background art.

[0006] To solve the above technical problems, a water conservancy water quality monitoring and sampling device provided by the present invention includes,

[0007] A sampling cylinder, inside which a hollow tube is installed. A plurality of partitions are spaced on the outer wall of the hollow tube. The inner cavity of the sampling cylinder is divided into a plurality of water storage cavities by the partitions. Flow ports communicating with the water storage cavities are penetrated on the wall surface of the hollow tube. Water inlet holes communicating with the water storage cavities are opened on its outer wall. A first mesh plate is installed on its bottom end surface. A sealing component for sealing the water inlet holes and the first mesh plate is arranged on the outer wall of the sampling cylinder;

[0008] A sliding tube, a hollow circular tube structure with upper and lower ends sealed. The outer wall of the sliding tube is hermetically fitted with the inner wall of the hollow tube. A water pump for pumping the water inside it is arranged at the top of the sliding tube. A straight slot is penetrated in the lower part of its wall surface, and a counterweight cavity is opened in the upper part of its wall surface;

[0009] Valve member; disposed on the outer wall of the hollow tube, which controls the opening / closing of the water outlet through movement, so that the water in the water storage cavity flows into the inside of the sliding tube; a trigger member is disposed on the outer wall of the sliding tube and slides with the sliding tube to trigger the movement of the valve member.

[0010] Further, the plugging assembly includes

[0011] A plugging sleeve, sleeved on the outside of the sampling cylinder, and water inlets having the same number as the water inlet holes are provided on its outer wall;

[0012] An inclined groove is formed on the wall surface of the plugging sleeve. A straight rod extending radially along the outer wall of the sampling cylinder is provided on the outer wall of the sampling cylinder, and the straight rod is inserted into the inside of the inclined groove;

[0013] A second mesh plate is installed at the bottom end of the plugging sleeve;

[0014] A driving member is disposed between the bottom surface of the sampling cylinder and the inner bottom wall of the plugging sleeve, and the driving member is used to drive the plugging sleeve to slide along the outer wall of the sampling cylinder.

[0015] Further, the driving member includes

[0016] A plurality of fixed magnets are symmetrically embedded in the outer bottom wall of the sampling cylinder;

[0017] A plurality of moving magnets are symmetrically embedded in the inner bottom wall of the plugging sleeve; when the fixed magnets are energized, the fixed magnets and the moving magnets repel each other with the same poles in the vertical direction.

[0018] Further, mesh holes are provided on both the first mesh plate and the second mesh plate. When the first mesh plate and the second mesh plate are in a fitting state, the mesh holes on the first mesh plate and the mesh holes on the second mesh plate are mutually misaligned.

[0019] Further, the valve member includes

[0020] A valve plate is slidably inserted into the water outlet in a truncated manner. A return spring for pushing it downward to block the water outlet is installed at its top end, and a steel wire rope for winding and pulling the valve plate upward to open the water outlet is also provided at its top;

[0021] An installation cylinder is installed on the outer wall of the hollow tube and extends into the water storage cavity. A first permanent magnet and a second permanent magnet are slidably installed inside the installation cylinder. The first permanent magnet and the second permanent magnet repel each other magnetically. A linkage rod is installed on the side of the second permanent magnet away from the first permanent magnet, and a wedge block is connected to the end of the linkage rod extending outside the installation cylinder;

[0022] A pushing member, the pushing member includes a vertical rod installed on the top surface of the partition board, a floating plate is slidably installed on the vertical rod, a push rod is installed on the top surface of the floating plate, and the push rod corresponds to the inclined surface of the wedge block in the vertical direction;

[0023] A rack, connected to the side of the first permanent magnet away from the second permanent magnet, one end of the rack away from the first permanent magnet is connected with a connecting plate, a rotating shaft is rotatably installed inside the first permanent magnet, and a gear meshed with the rack is installed on the rotating shaft. One end of the steel wire rope away from the valve plate is wound around the rotating shaft.

[0024] Further, the triggering member includes,

[0025] A sliding column, a sliding groove is provided on the side wall of the sliding tube and is radially opened along it. The sliding groove is located above the straight groove opening, and the sliding column is slidably connected inside the sliding groove; a sliding plate is installed at the end of the sliding groove extending outwards

[0026] A support spring, sleeved outside the sliding column, one end of which is connected to the sliding plate and the other end is connected to the inner wall of the sliding groove. The support spring gives the sliding plate a tendency to slide outwards of the sliding groove in the initial state.

[0027] Further, the inner wall of the sealing sleeve fits with the outer wall of the sampling tube, and a sealing film is provided between the outer wall of the sampling tube and the inner wall of the sealing sleeve.

[0028] Further, a water suction pipe and a drain pipe are connected to the water pump. The water suction pipe is inserted inside the sliding tube, and the drain pipe is located outside the sampling tube.

[0029] Further, a waterproof pipe communicating with the sliding tube is installed on the inner wall of the sliding tube, a water injection pipe communicating with the counterweight cavity is installed on the outer wall of the sliding tube, and electromagnetic valves for controlling the opening / closing are provided on both the waterproof pipe and the water injection pipe.

[0030] A sampling method for water quality monitoring, using a water conservancy water quality monitoring sampling device, the steps include,

[0031] S1. Transport the water conservancy water quality monitoring sampling device to the designated monitoring water area, connect the drain pipe to the telescopic hose, and slowly lower the sampling device into the water through the lifting device, so that the sampling tube is gradually immersed in the water body;

[0032] S2. When the sampling device sinks to the predetermined first sampling depth, the given magnet is energized to drive the sealing sleeve to slide down along the outer wall of the sampling tube. At this time, the water inlet is aligned with the water inlet hole, the first mesh plate is separated from the second mesh plate, and the water body enters the corresponding water storage cavity through the water inlet hole and the first mesh plate. When the water storage cavity is filled with water, the power supply to the given magnet is disconnected, and the sealing sleeve resets to block the water inlet hole;

[0033] S3. By injecting water into the counterweight chamber to adjust the overall weight of the counterweight chamber, the water entering the hollow tube provides buoyancy for the counterweight chamber. Under the action of buoyancy, the sliding tube slides upward. When the positions of the sliding plate and the connecting plate correspond, the elastic force of the support spring pushes the sliding column to drive the sliding plate into the installation cylinder, and drives the connecting plate to drive the first permanent magnet closer to the second permanent magnet. The rack drives the gear to wind up the steel wire rope by the rotating shaft, pulling the valve plate upward to open the water flow port, and the water body in the water storage chamber flows into the inside of the sliding tube through the water flow port and the straight groove port.

[0034] S4. Start the water pump, pump out the water sample in the sliding tube through the water suction pipe, and discharge it to the collection container through the drain pipe. After the water sample of this layer is extracted, after sampling the water of this layer, its interior is in a waterless state, the floating plate slides down along the vertical rod, and the wedge block resets, shortening the distance between the second permanent magnet and the first permanent magnet. At this time, the magnetic repulsion force between the second permanent magnet and the first permanent magnet is greater than the elastic thrust of the support spring, pushing the sliding plate to reset, and increasing or decreasing the overall weight of the sliding tube by opening the solenoid valve on the waterproof pipe or the water injection pipe, so that the sliding tube floats at different positions in the hollow tube. Furthermore, the sliding tube can be adjusted to rise or sink to the predetermined sampling depth of the next layer as needed. Repeat steps S2 - S3 to obtain stratified water samples at different depths.

[0035] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0036] 1. In the present invention, the stratified collection of water samples at different depths is realized during one-time equipment lowering. There is no need to frequently turn off the water pump, re-adjust the equipment height and take out the samples in the bottle like traditional equipment, which greatly saves time and labor costs and significantly improves work efficiency.

[0037] 2. In the present invention, by controlling the water injection or drainage of the counterweight chamber, the position of the sliding tube in water can be flexibly adjusted to meet the diverse needs of stratified sampling at different depths, improving the applicability and flexibility of the equipment, and being able to better cope with various complex water conservancy and water quality monitoring scenarios. Description of the Drawings

[0038] Figure 1 It is the front view structural schematic diagram of the present invention; <>

[0039] Figure 2 It is the rear view structural schematic diagram of the present invention;

[0040] Figure 3 It is the bottom view structural schematic diagram of the present invention;

[0041] Figure 4 It is the sectional view structural schematic diagram of the present invention;

[0042] Figure 5 It is the top view structural schematic diagram of the plugging sleeve in the present invention;

[0043] Figure 6 is Figure 4 an enlarged view of the structure at position A in

[0044] Figure 7 is Figure 4 an enlarged view of the structure at position B in

[0045] In the figure: 1, sampling cylinder; 2, water inlet hole; 3, hollow tube; 4, partition board; 5, water storage cavity; 6, first mesh plate; 7, sealing sleeve; 8, water inlet; 9, inclined groove; 10, straight rod; 11, second mesh plate; 12, fixed magnet; 13, moving magnet; 14, sliding tube; 15, water pump; 16, water suction pipe; 17, drain pipe; 18, counterweight cavity; 19, waterproof pipe; 20, water injection pipe; 21, solenoid valve; 22, straight slot; 23, chute; 24, sliding column; 25, sliding plate; 26, support spring; 27, water flow port; 28, valve plate; 29, return spring; 30, steel wire rope; 31, installation cylinder; 32, first permanent magnet block; 33, rack; 34, connecting plate; 35, rotating shaft; 36, gear; 37, second permanent magnet block; 38, linkage rod; 39, wedge block; 40, vertical rod; 41, floating plate; 42, top push rod. Specific embodiments

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] Please refer to Figures 1 - 7 , the present invention provides a technical solution: a water conservancy water quality monitoring and sampling device, including

[0048] a sampling cylinder 1, inside which a hollow tube 3 is installed. A plurality of partition boards 4 are arranged at intervals on the outer wall of the hollow tube 3. The inner cavity of the sampling cylinder 1 is divided into a plurality of water storage cavities 5 by the partition boards 4. A water flow port 27 communicating with the water storage cavity 5 is penetrated and opened on the wall surface of the hollow tube 3, and a water inlet hole 2 communicating with the water storage cavity 5 is opened on its outer wall. A first mesh plate 6 is installed on its bottom end surface, and a sealing component for sealing the water inlet hole 2 and the first mesh plate 6 is arranged on the outer wall of the sampling cylinder 1;

[0049] a sliding tube 14, a hollow circular tube structure with upper and lower ends sealed. The outer wall of the sliding tube 14 is hermetically attached to the inner wall of the hollow tube 3. A water pump 15 for pumping the water inside it is arranged at the top of the sliding tube 14. A straight slot 22 is penetrated and opened in the lower part of its wall surface, and a counterweight cavity 18 is opened in the upper part of its wall surface;

[0050] Valve member; It is arranged on the outer wall of the hollow tube 3, and it controls the opening / closing of the water outlet 27 through movement, so that the water in the water storage cavity 5 flows into the inside of the sliding tube 14; A trigger member is arranged on the outer wall of the sliding tube 14 to trigger the movement of the valve member by following the sliding of the sliding tube 14.

[0051] Specifically, the hollow tube 3 in the sampling cylinder 1 is separated into a plurality of water storage cavities 5 by the partition plate 4. The water inlet hole 2 and the first mesh plate 6 allow sewage to enter the water storage cavity 5. The plugging assembly can plug it to prevent water from entering at non-designated times. The sliding tube 14 is in sealing fit with the hollow tube 3. The water pump 15 can pump the water in the sliding tube 14. The valve member controls the opening and closing of the water outlet 27 through movement, determining whether the water in the water storage cavity 5 can flow into the sliding tube 14. The trigger member slides with the sliding tube 14 to trigger the action of the valve member, constructing the basic structure of layered sampling, capable of obtaining water samples at different depths during one lowering process of the equipment, solving the problem that traditional equipment cannot conveniently perform layered sampling, saving time and labor costs, and improving work efficiency.

[0052] Refer to Figures 1 - 4 , the plugging assembly includes,

[0053] The plugging sleeve 7, sleeved on the outside of the sampling cylinder 1, and water inlets 8 with the same number as the water inlet holes 2 are opened on its outer wall;

[0054] The inclined groove 9, opened on the wall surface of the plugging sleeve 7, and a straight rod 10 extending radially along the outer wall of the sampling cylinder 1 is arranged on the outer wall of the sampling cylinder 1, and the straight rod 10 is inserted into the inside of the inclined groove 9;

[0055] The second mesh plate 11, installed at the bottom end of the plugging sleeve 7;

[0056] The driving component, arranged between the bottom surface of the sampling cylinder 1 and the inner bottom wall of the plugging sleeve 7, and the driving component is used to drive the plugging sleeve 7 to slide along the outer wall of the sampling cylinder 1.

[0057] Specifically, the plugging sleeve 7 is sleeved outside the sampling cylinder 1, its water inlets 8 correspond to the water inlet holes 2, the straight rod 10 and the inclined groove 9 cooperate to guide the sliding direction of the plugging sleeve 7, the second mesh plate 11 is installed at the bottom end of the plugging sleeve 7, and works together with the first mesh plate 6. The driving component pushes the plugging sleeve 7 to slide along the outer wall of the sampling cylinder 1, so that the water inlets 8 are aligned or staggered with the water inlet holes 2, controlling the sewage to enter the water storage cavity 5, and realizing the control of the plugging and opening of the water inlet holes 2 and the first mesh plate 6 through a simple mechanical structure, with convenient operation and high stability, ensuring the collection of water samples at the appropriate depth and avoiding the confusion of water samples at different depths.

[0058] Refer to Figure 4 and Figure 5 , the driving component includes,

[0059] A plurality of fixed magnets 12, symmetrically embedded in the outer bottom wall of the sampling cylinder 1;

[0060] A plurality of moving magnets 13 are symmetrically embedded in the inner bottom wall of the sealing sleeve 7; when the fixed magnet 12 is energized, the fixed magnet 12 and the moving magnet 13 repel each other with the same poles in the vertical direction.

[0061] Specifically, the fixed magnet 12 is embedded in the outer bottom wall of the sampling cylinder 1, and the moving magnet 13 is embedded in the inner bottom wall of the sealing sleeve 7. When the fixed magnet 12 is energized, it repels the moving magnet 13 with the same pole, generating a downward repulsive force to drive the sealing sleeve 7 to slide upward along the outer wall of the sampling cylinder 1, aligning the water inlet 8 with the water inlet hole 2, and sewage enters the water storage cavity 5; after power-off, the sealing sleeve 7 resets under the action of gravity and the like. By using magnetic drive, the number of equipment components is reduced, the failure probability is lowered, the drive response speed and control accuracy are improved, and it is convenient to accurately control the timing of water sample collection.

[0062] Refer to Figure 4 and Figure 5 Both the first mesh plate 6 and the second mesh plate 11 are provided with mesh holes. When the first mesh plate 6 and the second mesh plate 11 are in a fitting state, the mesh holes on the first mesh plate 6 and the mesh holes on the second mesh plate 11 are mutually offset.

[0063] Specifically, when the first mesh plate 6 and the second mesh plate 11 are in contact, the mesh holes are mutually offset to block the entry of sewage. When the sealing sleeve 7 slides to separate the two, sewage can enter the water storage cavity 5 through the mesh holes. This offset design can prevent sewage from accidentally entering the water storage cavity 5 due to water flow fluctuations and other factors during non-sampling states, improving the accuracy and reliability of water sample collection, avoiding the contamination of high-depth water samples by low-depth water samples, and ensuring the representativeness of the water samples collected in each water storage cavity 5.

[0064] Refer to Figure 4 and Figure 7 The valve member includes

[0065] A valve plate 28 is slidably inserted in a truncated manner inside the water flow port 27. A return spring 29 for pushing it downward to block the water flow port 27 is installed at its top end, and a steel wire rope 30 for retracting and pulling the valve plate 28 upward to open the water flow port 27 is also provided at its top.

[0066] An installation cylinder 31 is installed on the outer wall of the hollow pipe 3 and extends into the interior of the water storage cavity 5. A first permanent magnet 32 and a second permanent magnet 37 are slidably installed inside the installation cylinder 31. The first permanent magnet 32 and the second permanent magnet 37 repel each other magnetically. A linkage rod 38 is installed on the side of the second permanent magnet 37 away from the first permanent magnet 32. One end of the linkage rod 38 extending outside the installation cylinder 31 is connected to a wedge-shaped block 39.

[0067] A top-pushing member. The top-pushing member includes a vertical rod 40 installed vertically on the top surface of the partition plate 4. A floating plate 41 is slidably installed on the vertical rod 40. A top-pushing rod 42 is installed on the top surface of the floating plate 41. The top-pushing rod 42 corresponds to the inclined surface of the wedge-shaped block 39 in the vertical direction.

[0068] The rack 33 is connected to the side of the first permanent magnet block 32 away from the second permanent magnet block 37. One end of the rack 33 away from the first permanent magnet block 32 is connected with a connecting plate 34. A rotating shaft 35 is rotatably installed inside the first permanent magnet block 32. A gear 36 meshed with the rack 33 is installed on the rotating shaft 35. One end of the steel wire rope 30 away from the valve plate 28 is wound around the rotating shaft 35.

[0069] Specifically, the valve plate 28 blocks the water flow port 27 under the action of the return spring 29. When the trigger member is triggered, the sliding plate 25 pushes the first permanent magnet block 32 closer to the second permanent magnet block 37. The first permanent magnet block 32 drives the gear 36 to rotate through the rack 33, so that the rotating shaft 35 winds up the steel wire rope 30, pulling the valve plate 28 upward to open the water flow port 27. The water in the water storage cavity 5 flows into the sliding tube 14. At the same time, the water level in the water storage cavity 5 rises, causing the floating plate 41 to slide on the vertical rod 40, and the top push rod 42 approaches the wedge-shaped block 39 to assist in controlling the valve member action; through the ingenious combination of magnetics and mechanical structures, the automatic control of the water flow port 27 is realized, and it is linked with the water level change in the water storage cavity 5 to ensure that the water flow port 27 is opened only when the water inlet in the water storage cavity 5 is completed and the sliding tube 14 reaches the appropriate position, improving the accuracy and automation of stratified sampling.

[0070] Refer to Figure 4 and Figure 6 , the trigger member includes,

[0071] The sliding column 24, a sliding groove 23 is provided on the side wall of the sliding tube 14 and is radially opened. The sliding groove 23 is located above the straight groove opening 22. The sliding column 24 is slidably connected inside the sliding groove 23; a sliding plate 25 is installed at the end of the sliding groove 23 extending outward.

[0072] The support spring 26 is sleeved outside the sliding column 24. One end of it is connected with the sliding plate 25, and the other end is connected with the inner wall of the sliding groove 23. The support spring 26 gives the sliding plate 25 a tendency to slide outward from the sliding groove 23 in the initial state.

[0073] Specifically, the sliding column 24 slides in the sliding groove 23. The support spring 26 makes the sliding plate 25 have a tendency to slide out of the sliding groove 23. When the sliding tube 14 descends to a certain position and the sliding plate 25 contacts the trigger structure such as the mounting cylinder 31, it is pushed to slide inside the sliding groove 23, and the support spring 26 is compressed, triggering the valve member to act. The simple and sensitive trigger structure can accurately respond to the position change of the sliding tube 14 and timely trigger the valve member to open the water flow port 27, ensuring the timeliness and accuracy of water sample transfer during the stratified sampling process.

[0074] Refer to Figure 4 , the inner wall of the sealing sleeve 7 fits with the outer wall of the sampling cylinder 1, and a sealing film is provided between the outer wall of the sampling cylinder 1 and the inner wall of the sealing sleeve 7. [[ID=URL]]

[0075] Specifically, the inner wall of the plugging sleeve 7 fits against the outer wall of the sampling cylinder 1. The sealing film enhances the sealing performance between the two. During the sliding process of the plugging sleeve 7, the sealing film prevents external sewage from entering through the gap, ensuring the purity of the water sample in the water storage chamber 5, improving the sealing performance of the device, preventing cross - contamination during water sample collection, and ensuring that the water samples collected in each water storage chamber 5 truly reflect the water quality at the corresponding depth.

[0076] Refer to Figure 4 , a water suction pipe 16 and a drain pipe 17 are connected to the water pump 15. The water suction pipe 16 is inserted inside the sliding pipe 14, and the drain pipe 17 is located outside the sampling cylinder 1.

[0077] Specifically, the water pump 15 extracts the water sample in the sliding pipe 14 through the water suction pipe 16 and discharges it to the collection container through the drain pipe 17. The water suction pipe 16 is inserted in the sliding pipe 14 to ensure the sealing and effectiveness of water sample extraction. The clear design of the water sample extraction and discharge path facilitates water sample collection and transfer, improving the operability and efficiency of the entire sampling process.

[0078] Refer to Figure 1 and Figure 4 , a waterproof pipe 19 communicating with the sliding pipe 14 is installed on the inner wall of the sliding pipe 14, and a water injection pipe 20 communicating with the counterweight chamber 18 is installed on the outer wall of the sliding pipe 14. Solenoid valves 21 for controlling their opening / closing are provided on both the waterproof pipe 19 and the water injection pipe 20.

[0079] Specifically, by controlling the solenoid valves 21 on the waterproof pipe 19 and the water injection pipe 20, water can be injected into or drained from the counterweight chamber 18 to adjust the overall weight of the sliding pipe 14. After the weight of the sliding pipe 14 changes, its buoyancy and position in the water change accordingly, facilitating adjustment to different depths for water sample collection. This provides a convenient and effective way for depth adjustment of the sliding pipe 14, enabling flexible adjustment of the device's position in the water according to actual needs, meeting the requirements of stratified sampling at different depths, and improving the applicability and flexibility of the device.

[0080] A water sampling method for water quality monitoring, using a hydraulic water quality monitoring sampling device. The steps include,

[0081] S1. Transport the hydraulic water quality monitoring sampling device to the designated monitoring water area. Connect the drain pipe 17 to the telescopic hose and slowly lower the sampling device into the water through the lifting device, so that the sampling cylinder 1 gradually immerses in the water body.

[0082] S2. When the sampling device sinks to the predetermined first - layer sampling depth, energize the given magnet 12 to drive the plugging sleeve 7 to slide downward along the outer wall of the sampling cylinder 1. At this time, the water inlet 8 is aligned with the water inlet hole 2, the first mesh plate 6 is separated from the second mesh plate 11, and the water body enters the corresponding water storage chamber 5 through the water inlet hole 2 and the first mesh plate 6. When the water storage chamber 5 is filled with water, cut off the power supply to the given magnet 12, and the plugging sleeve 7 resets to block the water inlet hole 2.

[0083] S3. By filling the inside of the counterweight cavity 18 with water to adjust the overall weight of the counterweight cavity 18, the water entering the inside of the hollow tube 3 provides buoyancy for the counterweight cavity 18. Under the action of the buoyancy, the sliding tube 14 slides upward. When the positions of the sliding plate 25 and the connecting plate 34 correspond, the elastic force of the support spring 26 pushes the sliding column 24 to drive the sliding plate 25 into the mounting cylinder 31, and pushes the connecting plate 34 to drive the first permanent magnet 32 closer to the second permanent magnet 37. The rack 33 drives the gear 36 to wind up the steel wire rope 30 by the rotating shaft 35, pulling the valve plate 28 upward to open the water flow port 27. The water body in the water storage cavity 5 flows into the inside of the sliding tube 14 through the water flow port 27 and the straight slot 22.

[0084] S4. Start the water pump 15, pump out the water sample in the sliding tube 14 through the water suction pipe 16, and discharge it to the collection container through the drain pipe 17. After the water sample of this layer is taken, and after the water sampling in this layer, its inside is in a waterless state. The floating plate 41 slides down along the vertical rod 40, and the wedge block 39 resets, shortening the distance between the second permanent magnet 37 and the first permanent magnet 32. At this time, the magnetic repulsion force between the second permanent magnet 37 and the first permanent magnet 32 is greater than the elastic thrust of the support spring 26, pushing the sliding plate 25 to reset, and increasing or decreasing the overall weight of the sliding tube 14 by opening the solenoid valve 21 on the waterproof pipe 19 or the water injection pipe 20, so that the sliding tube 14 floats at different positions in the hollow tube 3. Furthermore, the sliding tube 14 can be adjusted to rise or sink to the predetermined sampling depth of the next layer as needed, and repeat steps S2 - S3 to obtain stratified water samples at different depths.

[0085] Working principle: Transport the device to the designated water area. After connecting the drain pipe 17 and the telescopic hose, slowly lower it into the water with the help of the lifting device, so that the sampling cylinder 1 is gradually immersed in the water body. At this time, the sealing sleeve 7 in the sealing assembly is tightly sleeved outside the sampling cylinder 1, and the first mesh plate 6 and the second mesh plate 11 are in contact and the mesh holes are misaligned, preventing the water body from entering the water storage cavity 5;

[0086] When reaching the predetermined sampling depth of the first layer, energize the given magnet 12, and it repels the moving magnet 13 with the same pole, driving the sealing sleeve 7 to slide down along the outer wall of the sampling cylinder 1. At this time, the water inlet 8 is aligned with the water inlet hole 2, and the first mesh plate 6 is separated from the second mesh plate 11. The water body flows into the corresponding water storage cavity 5 through the water inlet hole 2 and the first mesh plate 6. After the water body is filled, cut off the power supply to reset the sealing sleeve 7 and block the water inlet hole 2.

[0087] The weight of the counterweight chamber 18 is adjusted by injecting water into it. The water in the hollow tube 3 provides buoyancy for the sliding tube 14, causing it to slide upward. When the sliding plate 25 corresponds to the position of the mounting cylinder 31, the support spring 26 pushes the sliding plate 25 into the mounting cylinder 31, pushing the first permanent magnet 32 closer to the second permanent magnet 37. The first permanent magnet 32 drives the gear 36 to rotate through the rack 33, causing the rotating shaft 35 to wind up the steel wire rope 30, pulling the valve plate 28 upward to open the water flow port 27. The water body in the water storage chamber 5 flows into the sliding tube 14 through the water flow port 27 and the straight groove port 22.

[0088] Start the water pump 15, pump out the water sample in the sliding tube 14 through the water suction pipe 16, and discharge it to the collection container through the drain pipe 17. After the sampling of this layer is completed, there is no water in the water storage chamber 5, the floating plate 41 slides downward, the wedge-shaped block 39 resets, and the magnetic repulsion force between the second permanent magnet 37 and the first permanent magnet 32 pushes the sliding plate 25 to reset. The weight of the sliding tube 14 is adjusted by controlling the solenoid valves 21 on the waterproof pipe 19 and the water injection pipe 20, so that it moves to different positions in the hollow tube 3, and repeat the above steps to obtain stratified water samples at different depths.

[0089] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as a limitation of the present invention itself. Various changes can be made in its form and details without departing from the spirit and scope of the present invention defined by the appended claims.

Claims

1. A water conservancy water quality monitoring sampling device, characterized in that, Including, A sampling cylinder (1) with a hollow tube (3) installed inside. A plurality of partition plates (4) are arranged at intervals on the outer wall of the hollow tube (3). The inner cavity of the sampling cylinder (1) is divided into a plurality of water storage cavities (5) by the partition plates (4). A water flow port (27) communicating with the water storage cavity (5) is penetrated and opened on the wall surface of the hollow tube (3), a water inlet hole (2) communicating with the water storage cavity (5) is opened on its outer wall, a first mesh plate (6) is installed on its bottom end surface, and a sealing component for sealing the water inlet hole (2) and the first mesh plate (6) is arranged on the outer wall of the sampling cylinder (1); A sliding tube (14), a hollow circular tube structure with upper and lower ends sealed. The outer wall of the sliding tube (14) is in sealed fit with the inner wall of the hollow tube (3). A water pump (15) for extracting the water body inside it is arranged at the top of the sliding tube (14). A straight slot (22) is penetrated and opened in the lower part of its wall surface, and a counterweight cavity (18) is opened in the upper part of its wall surface; A valve member; arranged on the outer wall of the hollow tube (3), which controls the opening / closing of the water flow port (27) through movement to enable the water body in the water storage cavity (5) to flow into the inside of the sliding tube (14); A trigger member that follows the sliding of the sliding tube (14) to trigger the movement of the valve member is arranged on the outer wall of the sliding tube (14).

2. The water quality monitoring and sampling device for water conservancy according to claim 1, wherein: The sealing component includes, A sealing sleeve (7), sleeved on the outside of the sampling cylinder (1), and water inlet ports (8) with the same number as the water inlet holes (2) are opened on its outer wall; An inclined slot (9), opened on the wall surface of the sealing sleeve (7). A straight rod (10) extending radially along the outer wall of the sampling cylinder (1) is arranged on the outer wall of the sampling cylinder (1), and the straight rod (10) is inserted into the inclined slot (9); A second mesh plate (11), installed at the bottom end of the sealing sleeve (7); A driving component, arranged between the bottom surface of the sampling cylinder (1) and the inner bottom wall of the sealing sleeve (7), and the driving component is used to drive the sealing sleeve (7) to slide along the outer wall of the sampling cylinder (1).

3. The water conservancy water quality monitoring sampling device according to claim 2, characterized in that: The driving component includes, A plurality of fixed magnets (12), symmetrically embedded in the outer bottom wall of the sampling cylinder (1); A plurality of moving magnets (13), symmetrically embedded in the inner bottom wall of the sealing sleeve (7); when the fixed magnets (12) are electrified, the fixed magnets (12) and the moving magnets (13) repel each other with the same poles in the vertical direction.

4. A water quality monitoring sampling device for water conservancy as described in claim 2, characterized in that: Mesh holes are provided on both the first mesh plate (6) and the second mesh plate (11). When the first mesh plate (6) and the second mesh plate (11) are in a fitting state, the mesh holes on the first mesh plate (6) are offset from the mesh holes on the second mesh plate (11).

5. A water conservancy water quality monitoring sampling device according to claim 1, characterized in that: The valve member includes, A valve plate (28), slidably inserted in a truncated manner inside the water flow port (27). A return spring (29) for pushing it downward to seal the water flow port (27) is installed at its top end, and a steel wire rope (30) for retracting to pull the valve plate (28) upward to open the water flow port (27) is also arranged at its top. The installation cylinder (31) is installed on the outer wall of the hollow tube (3) and extends into the interior of the water storage chamber (5). A first permanent magnet block (32) and a second permanent magnet block (37) are slidably installed inside the installation cylinder (31). The first permanent magnet block (32) and the second permanent magnet block (37) repel each other magnetically. A linkage rod (38) is installed on the side of the second permanent magnet block (37) away from the first permanent magnet block (32). The end of the linkage rod (38) extending outside the installation cylinder (31) is connected to a wedge block (39). The pushing member, the pushing member includes a vertical rod (40) vertically installed on the top surface of the partition plate (4). A floating plate (41) is slidably installed on the vertical rod (40). A push rod (42) is installed on the top surface of the floating plate (41). The push rod (42) corresponds to the inclined surface of the wedge block (39) in the vertical direction. The rack (33) is connected to the side of the first permanent magnet block (32) away from the second permanent magnet block (37). The end of the rack (33) away from the first permanent magnet block (32) is connected to a connecting plate (34). A rotating shaft (35) is rotatably installed inside the first permanent magnet block (32). A gear (36) meshing with the rack (33) is installed on the rotating shaft (35). The end of the steel wire rope (30) away from the valve plate (28) is wound around the rotating shaft (35).

6. The water quality monitoring and sampling device for water conservancy according to claim 1, wherein: The triggering member includes, A sliding column (24). A sliding groove (23) is radially opened on the side wall of the sliding tube (14). The sliding groove (23) is located above the straight groove opening (22). The sliding column (24) is slidably connected inside the sliding groove (23). A sliding plate (25) is installed at the end of the sliding groove (23) extending outwards. A support spring (26) is sleeved outside the sliding column (24). One end of it is connected to the sliding plate (25), and the other end is connected to the inner wall of the sliding groove (23). The support spring (26) gives the sliding plate (25) a tendency to slide out of the sliding groove (23) in the initial state.

7. The water conservancy water quality monitoring sampling device according to claim 1, characterized in that: The inner wall of the sealing sleeve (7) fits against the outer wall of the sampling tube (1). A sealing film is provided between the outer wall of the sampling tube (1) and the inner wall of the sealing sleeve (7).

8. The water conservancy water quality monitoring and sampling device according to claim 1, characterized in that: A water suction pipe (16) and a drain pipe (17) are connected to the water pump (15). The water suction pipe (16) is inserted inside the sliding tube (14). The drain pipe (17) is located outside the sampling tube (1).

9. The water conservancy water quality monitoring sampling device according to claim 1, characterized in that: A waterproof pipe (19) communicating with the sliding tube (14) is installed on the inner wall of the sliding tube (14). A water injection pipe (20) communicating with the counterweight chamber (18) is installed on the outer wall of the sliding tube (14). Solenoid valves (21) for controlling their opening / closing are provided on both the waterproof pipe (19) and the water injection pipe (20).

10. A sampling method for water quality monitoring, characterized in that, Using the water conservancy water quality monitoring sampling device according to any one of claims 1-9, the steps include, S1. Transport the water conservancy water quality monitoring sampling device to the designated monitoring water area. Connect the drain pipe (17) to the telescopic hose, and slowly lower the sampling device into the water through the lifting device, so that the sampling tube (1) is gradually immersed in the water body. S2. When the sampling device sinks to the predetermined first-layer sampling depth, the given magnet (12) is powered on, driving the plugging sleeve (7) to slide downward along the outer wall of the sampling cylinder (1). At this time, the water inlet (8) is aligned with the water inlet hole (2), the first mesh plate (6) is separated from the second mesh plate (11), and water enters the corresponding water storage cavity (5) through the water inlet hole (2) and the first mesh plate (6). After the water storage cavity (5) is filled with water, the power supply to the fixed magnet (12) is disconnected, and the plugging sleeve (7) resets to block the water inlet hole (2). S3. By injecting water into the counterweight cavity (18) to adjust the overall weight of the counterweight cavity (18), the water entering the interior of the hollow tube (3) provides buoyancy for the counterweight cavity (18). Under the action of buoyancy, the sliding tube (14) slides upward. When the positions of the sliding plate (25) and the connecting plate (34) correspond, the elastic force of the support spring (26) pushes the sliding column (24) to drive the sliding plate (25) into the installation cylinder (31), and pushes the connecting plate (34) to drive the first permanent magnet (32) closer to the second permanent magnet (37). The rack (33) drives the gear (36) to wind up the steel wire rope (30) by the rotating shaft (35), pulling the valve plate (28) upward to open the water flow port (27). The water in the water storage cavity (5) flows into the interior of the sliding tube (14) through the water flow port (27) and the straight slot (22). S4. Start the water pump (15), and pump out the water sample in the sliding tube (14) through the water suction pipe (16), and discharge it to the collection container through the drain pipe (17). After the water sample of this layer is taken, the interior is in a waterless state. The floating plate (41) slides down along the vertical rod (40), and the wedge block (39) resets, shortening the distance between the second permanent magnet (37) and the first permanent magnet (32). At this time, the magnetic repulsion force between the second permanent magnet (37) and the first permanent magnet (32) is greater than the elastic thrust of the support spring (26), pushing the sliding plate (25) to reset. By opening the solenoid valve (21) on the waterproof pipe (19) or the water injection pipe (20), the overall weight of the sliding tube (14) is increased or decreased, so that the sliding tube (14) floats at different positions in the hollow tube (3). Furthermore, the sliding tube (14) can be adjusted to rise or sink to the next predetermined sampling depth as needed, and repeat steps S1 - S3 to obtain stratified water samples at different depths.

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