Water quality sampling and monitoring integrated device and method

Abstract

The application relates to a water quality sampling and monitoring integrated device and method, belonging to the technical field of water quality sampling and monitoring. The water quality sampling and monitoring integrated device comprises a monitoring module, the top end of the monitoring module is provided with a sampling assembly used for sampling and storing water quality, a sampling assembly is slidably arranged in the sampling assembly, the bottom end of the sampling assembly is cooperatively provided with a protection counterweight assembly used for increasing the overall weight of the sampling assembly, through the relative sliding structure design of the piston and the sampling barrel, it is ensured that water samples are sucked into the sampling barrel through negative pressure only when the device reaches the preset sampling depth after entering water, the pistons of the sampling assemblies are connected into a linkage system through the telescopic sleeve rod, zero-time-difference synchronous collection of water samples of multiple different depths in the same vertical section is realized, a cleaning gasket is fixedly arranged at the bottom end of the piston, and dirt, water stains and microbial membranes remaining after previous sampling are completely removed and pushed to the bottom of the barrel.

Description

Technical Field

[0001] This invention belongs to the field of water quality sampling and monitoring technology, specifically relating to an integrated water quality sampling and monitoring device and method. Background Technology

[0002] With increasingly stringent requirements for environmental protection and water resource management, water quality monitoring technology has developed rapidly. Currently, various self-sampling water quality devices that require no manual assistance have emerged on the market. These devices typically consist of a sampling container and a counterweight structure. During use, the device is simply placed into the water body to be tested, and it automatically collects the water sample. After sampling, the operator can lift the device out of the water for subsequent monitoring and analysis. This type of equipment is easy to operate, requires minimal professional expertise from operators, and has improved water quality to a certain extent.

[0003] Existing equipment begins slow water sampling as soon as it enters the water, making it impossible to control the timing of the sampling start. This results in the collected water sample being a mixed body of water from the surface to the depth where the equipment remains, failing to accurately reflect the water quality at a specific preset depth. Furthermore, in vertical water profile analysis, it is usually necessary to collect water samples at different depths at the same location for comparison. However, existing equipment can only obtain water samples from one depth per drop. If water samples from different depths are collected through multiple drops, the water disturbance and local water mixing caused by the first sampling will significantly affect the original water environment at subsequent sampling points, causing the data from water samples at different depths to lose comparability and accuracy. Therefore, those skilled in the art provide an integrated water quality sampling and monitoring device and method to solve the problems mentioned in the background art. Summary of the Invention

[0004] The purpose of this invention is to provide a simple and rationally designed integrated water quality sampling and monitoring device and method to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] An integrated water quality sampling and monitoring device includes a monitoring module. The top of the monitoring module is provided with a sampling component for sampling and storing water quality. Inside the sampling component, a sampling element for taking water into the sampling component and cleaning the inside of the sampling component is slidably disposed. At the bottom of the sampling component, a protective counterweight component is provided to increase the overall weight of the sampling component.

[0007] A telescopic sleeve is provided between two adjacent sampling components for adjusting the distance between them, and several adjusting screws are provided on the sidewalls of two adjacent sampling components for fixing their positions.

[0008] Preferably, the sampling assembly includes a sampling bucket, a guide frame is fixedly connected to the top of the inner wall of the sampling bucket, a number of assembly buckles that cooperate with the adjusting screw are fixedly connected to the side wall of the sampling bucket, and a drain pipe is fixedly connected to the side wall of the sampling bucket.

[0009] Preferably, a fixing frame is fixedly connected to the inner wall of the drain pipe, and a one-way sealing module is provided through the middle of the fixing frame.

[0010] Preferably, the sampling assembly includes a piston that slides in a sealed manner against the inner wall of the sampling bucket, a plurality of sealing gaskets are fixedly sleeved on the side wall of the piston, and a cleaning gasket is fixedly connected to the bottom end of the piston.

[0011] Preferably, the piston top is fixedly connected to a fixed rod that slides through the middle of the guide frame, the fixed rod top sidewall is fixedly provided with a through hole, and the piston bottom middle is fixedly connected with a connecting nut.

[0012] Preferably, the protective counterweight assembly includes a counterweight cover plate that is threaded to the bottom of the sampling barrel, a limit frame that is fixedly connected to the top of the counterweight cover plate, and a baffle that is slidably connected to the inner wall of the limit frame.

[0013] Preferably, the bottom end of the baffle is threadedly connected to a filter screen that slides through the top of the counterweight cover plate, and the middle part of the baffle is threadedly connected to a threaded plug.

[0014] Preferably, the monitoring module includes an analytical instrument, the top of which is fixedly connected to a base that cooperates with a counterweight cover plate, and the front of the top of the analytical instrument is fixedly connected to a sampling tube that cooperates with a drain pipe.

[0015] A method for using an integrated water quality sampling and monitoring device includes the following steps:

[0016] S1. When it is necessary to sample the water quality of the water body, first push the fixed rod to the bottom of the sampling bucket, hang it with the hook and the through hole, and connect the fixed rod to the hoist or other lifting equipment. Use the hoist or other lifting equipment to put the sampling component into the water body at the designated depth. After the sampling component and the sampling assembly fall into the water body and reach the designated position, the sampling assembly will remain stationary at the designated position in the water body due to the pulling force of the hoist or other lifting equipment. The sampling component and the sampling assembly will slide downward due to their own weight, drawing the water from the filter screen into the sampling assembly.

[0017] S2. If it is necessary to sample water at different heights in the water body, first adjust the telescopic sleeve to a suitable length to ensure that the distance between the two sampling components can simultaneously sample different heights in the water body. Then connect the two ends of the telescopic sleeve to the connecting nut at the bottom of the piston in one sampling component and the top of the fixed rod in the other sampling component, respectively. At the same time, pass the adjusting screw through the assembly buckle and use the nut to fix the position of the sampling component. Then repeat step S1 to achieve sampling of water at different heights.

[0018] S3. After sampling, place the individual sampling component together with the protective counterweight component on the base, and insert the drain tube on the sampling component into the sampling tube to introduce the collected water into the analysis instrument. The specific water quality can be analyzed using the existing analysis instrument to achieve water quality monitoring.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. In this invention, the relative sliding structure design between the piston and the sampling bucket, combined with the suspension control of the fixed rod and the weight-adding effect of the protective counterweight component, ensures that the sampling bucket does not immediately fill with water after the device is submerged in water. Instead, water samples are only drawn in through negative pressure when the preset sampling depth is reached. Compared with traditional devices that collect samples immediately upon immersion in water, this invention completely avoids the problem of water sample mixing throughout the entire process from the water surface to the target depth. This allows the collected water samples to truly and accurately reflect the water quality at the preset depth, significantly improving the representativeness and scientific validity of the monitoring data.

[0021] 2. In this invention, the pistons of each sampling component are connected into a linkage system via a telescopic sleeve. An adjusting screw rigidly locks the spacing between the sampling buckets, enabling zero-time-difference synchronous collection of multiple water samples at different depths along the same vertical profile with a single water insertion. All sampling buckets independently complete water intake at the same moment, without any water quality exchange or disturbance between them. This completely avoids the water disturbance, local water mixing, and cross-contamination problems caused by repeated sampling in traditional equipment, ensuring the comparability and accuracy of water sample data from different depths.

[0022] 3. In this invention, a cleaning washer is fixedly installed at the bottom of the piston. The outer edge of the cleaning washer fits tightly against the inner wall of the sampling bucket. Before each sampling, as the piston is pushed from the top to the bottom of the sampling bucket, the cleaning washer scrapes the inner wall of the sampling bucket throughout the process, thoroughly removing and pushing away any residual dirt, water stains, and microbial film from the previous sampling to the bottom of the bucket. Combined with a counterweight cover that can be unscrewed from the sampling bucket, the scraped dirt can be completely discharged from the bottom opening, ensuring that the inner wall of the bucket is clean before each sampling. This structure effectively prevents cross-contamination between samples and significantly improves the monitoring stability and accuracy of the equipment during long-term use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram showing the connection between the sampling component and the monitoring module of the present invention;

[0024] Figure 2 This is a schematic diagram of the installation of the sampling component, the sampling assembly, and the protective counterweight component of the present invention;

[0025] Figure 3 This is an exploded structural diagram of the sampling component, the sampling assembly, and the protective counterweight component of the present invention;

[0026] Figure 4 This is a schematic diagram of the overall structure of the sampling component, the sampling assembly, and the protective counterweight component of the present invention from another perspective;

[0027] Figure 5 This is a cross-sectional schematic diagram of the sampling component, the sampling assembly, and the protective counterweight component of the present invention;

[0028] Figure 6 This is the present invention. Figure 5 Enlarged view of point A in the middle;

[0029] Figure 7 This is a cross-sectional structural schematic diagram of the sampling component of the present invention;

[0030] Figure 8 This is a cross-sectional structural schematic diagram of the sampling component of the present invention;

[0031] Figure 9 This is a cross-sectional structural schematic diagram of the protective counterweight component of the present invention;

[0032] Figure 10 This is a schematic diagram showing the connection of multiple sampling components in this invention;

[0033] Figure 11 This is a schematic diagram of the overall structure of the monitoring module of the present invention.

[0034] In the diagram: 1. Sampling assembly; 101. Sampling bucket; 102. Guide frame; 103. Assembly buckle; 104. Drain pipe; 105. One-way sealing module; 106. Fixing frame; 2. Sampling component; 201. Fixing rod; 202. Through hole; 203. Piston; 204. Sealing gasket; 205. Cleaning gasket; 206. Connecting nut; 3. Protective counterweight assembly; 301. Counterweight cover plate; 302. Baffle; 303. Limiting frame; 304. Filter screen cover; 305. Threaded plug; 4. Monitoring module; 401. Analytical instrument; 402. Base; 403. Sampling tube; 5. Telescopic sleeve; 6. Adjusting screw. Detailed Implementation

[0035] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0036] Example: Figure 1 - Figure 5 As shown, an integrated water quality sampling and monitoring device includes a monitoring module 4. The top of the monitoring module 4 is provided with a sampling component 1 for sampling and storing water quality. Inside the sampling component 1, a sampling assembly 2 is slidably disposed for taking water into the sampling component 1 and cleaning the inside of the sampling component 1. At the bottom of the sampling component 1, a protective counterweight assembly 3 is provided to increase the overall weight of the sampling component 1.

[0037] like Figure 1 - Figure 5 , Figure 10 As shown, to achieve interference-free synchronous collection of multiple water samples at different depths in the same vertical profile, a telescopic sleeve 5 is installed between two adjacent sampling components 2. The two ends of the telescopic sleeve 5 are fixedly connected to the connecting nut 206 at the bottom of the piston 203 in the upper sampling component 2 and the top of the fixing rod 201 in the lower sampling component 2, respectively, forming a series piston linkage system. Several adjusting screws 6 are installed on the side walls of two adjacent sampling components 1. The adjusting screws 6 pass through the assembly buckles 103 on the side walls of the sampling buckets 101, and the axial spacing of each sampling bucket 101 is rigidly locked by locking nuts. After entering the water, the pistons 203 inside each sampling component 1 remain relatively stationary because they are connected to the same telescopic sleeve 5 system, while each sampling bucket 101 slides down synchronously under its own counterweight, achieving "zero-time-difference" synchronous collection of multiple water samples at different depths, completely avoiding water disturbance and cross-mixing problems caused by multiple placements.

[0038] like Figure 1 - Figure 7 As shown, in order to achieve water quality sampling and ensure that the collected water quality sample can be retrieved, the sampling component 1 includes a sampling bucket 101. A guide frame 102 is fixedly connected to the top of the inner wall of the sampling bucket 101. Several assembly buckles 103 that cooperate with the adjusting screw 6 are fixedly connected to the side wall of the sampling bucket 101. A drain pipe 104 is fixedly connected to the side wall of the sampling bucket 101. A hole is opened in the middle of the guide frame 102 to facilitate better stability when the fixing rod 201 moves up and down in the sampling bucket 101, prevent the sampling component 2 from tilting during the movement in the sampling component 1, and ensure that the water quality can be smoothly sucked in through negative pressure.

[0039] like Figure 1 - Figure 7As shown, a fixing frame 106 is fixedly connected to the inner wall of the drain pipe 104. A one-way sealing module 105 is installed through the middle of the fixing frame 106. The one-way sealing module 105 consists of a sealing plug and a spring. Under the pressure of the spring, the sealing plug will seal the drain pipe 104 to prevent the water sample from overflowing after collection. At the same time, a vertical rod is provided at the bottom of the one-way sealing module 105. By pressing the vertical rod, the one-way sealing module 105 can be lifted up, which facilitates the removal and monitoring of the collected water sample.

[0040] It should be noted that an assembly buckle 103 is provided on the side wall of the sampling bucket 101. When sampling water at different depths simultaneously, the adjusting screw 6 can be passed through the assembly buckle 103, and the nuts are threaded to the adjusting screw 6 at the top and bottom of the assembly buckle 103 respectively, to fix the position of each sampling component 1 in the bucket, thereby achieving rigid locking of the distance between two adjacent sampling components 1 and ensuring the accuracy of the depth difference of multi-layer sampling.

[0041] like Figure 1 - Figure 5 , Figure 8 As shown, in order to enable the device to sample at a specified water height, the sampling assembly 2 includes a piston 203 that slides in a sealed manner with the inner wall of the sampling bucket 101. Several sealing gaskets 204 are fixedly sleeved on the side wall of the piston 203, and a cleaning gasket 205 is fixedly connected to the bottom end of the piston 203. The sealing gaskets 204 can effectively improve the sealing effect when the piston 203 moves in the sampling assembly 1.

[0042] It should be noted that the cleaning gasket 205 at the bottom of the piston 203 contacts the inner wall of the sampling bucket 101. Before each sampling, as the piston 203 is pushed down from the top to the bottom of the sampling bucket 101, the cleaning gasket 205 continuously scrapes away the dirt and water stains remaining on the inner wall of the sampling bucket 101, improving the cleaning effect and effectively reducing the impact of the external environment on the water quality sample, thereby improving the accuracy of monitoring.

[0043] It should be further explained that the dirt and water stains scraped off by the cleaning gasket 205 are pushed to the bottom of the sampling bucket 101. With the help of the counterweight cover plate 301 in the protective counterweight assembly 3 that can be unscrewed from the sampling bucket 101, the scraped dirt can be completely discharged from the bottom opening of the sampling bucket 101, ensuring that the inner wall of the bucket is clean before each sampling.

[0044] like Figure 1 - Figure 5 , Figure 8As shown, a fixed rod 201 that slides through the middle of the guide frame 102 is fixedly connected to the top of the piston 203. A through hole 202 is fixedly opened on the side wall of the top of the fixed rod 201. The through hole 202 is used to connect with the hook of the hoisting equipment to realize the suspension and fixation of the position of the piston 203. A connecting nut 206 is fixedly connected to the middle of the bottom end of the piston 203. The top of the fixed rod 201 is provided with threads to facilitate connection with one end of the telescopic sleeve 5. At the same time, the connecting nut 206 can be threadedly connected to the other end of the telescopic sleeve 5, so that the pistons 203 in the two adjacent sampling components 1 form a linkage system and can synchronously generate negative pressure for sampling after reaching a specified height in the water.

[0045] It should be noted that existing sampling buckets directly collect water samples after being submerged in water, and cannot collect samples at different depths. Therefore, after the sampling component 2 in sampling component 1 is lowered into the water by hoisting equipment such as an electric hoist, sampling component 1 and sampling component 2 will descend together to a designated height. After reaching the designated height, the fixed rod 201 in sampling component 2 is connected to the hoisting equipment through the through hole 202 and is subjected to tension, keeping the piston 203 stationary in the water. Sampling component 1 and protective counterweight component 3 will continue to slide downwards due to their own weight and other factors, thereby drawing water samples from the protective counterweight component 3 into sampling component 1 at the designated height, realizing the fixed-point triggering function of "sampling after reaching the designated depth".

[0046] It should be further explained that the sampling component 1 and the piston 203 are made of the same metal material, and the side wall of the sampling barrel 101 is relatively thick. At the same time, the counterweight cover plate 301 in the protective counterweight component 3 is made of a metal material with a density greater than that of the sampling barrel 101. This makes the downward gravity generated by the sampling component 1 and the protective counterweight component 3 in the water body much greater than the frictional force generated between the piston 203 and the side wall of the sampling barrel 101. This ensures that after the device enters the water body, there is a sealed sliding between the piston 203 and the inner wall of the sampling barrel 101, so that the water can be pumped into the sampling component 1.

[0047] When sampling assembly 1 and piston 203 are submerged in water but have not reached the designated depth, they remain relatively stationary and descend synchronously. Upon reaching the preset sampling depth, the fixed rod 201, connected to the hoisting equipment, cannot continue descending due to external suspension constraints and remains at that depth, while the sampling bucket 101 and protective counterweight assembly 3 continue to slide downwards under their own weight. At this time, a sealed cavity is formed between piston 203 and the bottom inner wall of sampling bucket 101. The volume of this cavity gradually increases, and its internal pressure decreases accordingly, falling below the external water pressure. Under the pressure difference, external water is drawn into sampling bucket 101 through baffle 302. When piston 203 moves upward to the top of sampling bucket 101 and is limited by guide frame 102, the fixed rod 201 is pulled upward to retrieve the device. During the upward movement of the recovery process, under the combined action of external lifting force and the weight of the water inside the sampling bucket 101, the baffle 302 is tightly pressed against the opening at the bottom of the counterweight cover plate 301, achieving reliable sealing of the water inlet and effectively preventing the collected water sample from leaking or overflowing during the lifting process.

[0048] like Figure 1 - Figure 5 , Figure 9 As shown, in order to prevent the water sample from flowing out and to be used for different sampling situations, the protective counterweight assembly 3 includes a counterweight cover plate 301 threadedly connected to the bottom of the sampling bucket 101. A limit frame 303 is fixedly connected to the top of the counterweight cover plate 301. A baffle 302 is slidably connected to the inner wall of the limit frame 303. The limit frame 303 can limit the position of the baffle 302. When the water is sucked into the sampling assembly 1 through negative pressure, the baffle 302 moves upward to suck in the water under the action of negative pressure. After sampling is completed, the baffle 302 will seal the opening of the counterweight cover plate 301 under the action of water pressure to prevent the sample from flowing out.

[0049] like Figure 1 - Figure 5 , Figure 9 As shown, the bottom end of the baffle 302 is threadedly connected to a filter screen 304 that slides through the top of the counterweight cover 301. The filter screen 304 slides through the top opening of the counterweight cover 301. A threaded plug 305 is threaded through the middle of the baffle 302. When the device as a whole performs individual single-point sampling, the threaded plug 305 and the baffle 302 are screwed together to improve the sealing effect of the baffle 302. When it is necessary to connect the pistons 203 of two adjacent sampling components 2 through the telescopic sleeve 5 to achieve multi-layer synchronous sampling, the threaded plug 305 needs to be removed so that the telescopic sleeve 5 passes through the hole in the middle of the baffle 302 and connects with the connecting nut 206, thereby establishing a piston linkage system.

[0050] It should be noted that the diameter of the filter screen 304 is equal to the opening diameter on the counterweight cover plate 301, which can filter insoluble substances in the water, thereby enabling the monitoring of soluble components in the water. At the same time, after removing the filter screen 304, it can be used to detect the full environmental conditions in the water, effectively improving the scope of detection.

[0051] It should be further explained that the counterweight cover plate 301 can be removed from the sampling assembly 1. After the cleaning gasket 205 on the piston 203 scrapes away the dirt and water stains on the inner wall of the sampling assembly 1 and pushes them to the bottom of the sampling bucket 101, the scraped dirt can be completely discharged from the bottom opening of the sampling bucket 101, avoiding the accumulation of dirt in the bucket and affecting the subsequent sampling accuracy, thus improving the accuracy of water quality sampling.

[0052] like Figure 1 - Figure 5 , Figure 11 As shown, the monitoring module 4 includes an analytical instrument 401. A base 402, which cooperates with a counterweight cover plate 301, is fixedly connected to the top of the analytical instrument 401. A sampling tube 403, which cooperates with a drain pipe 104, is fixedly connected to the front of the top of the analytical instrument 401. The analytical instrument 401 is a benchtop fully automatic multi-parameter water quality comprehensive analyzer. It performs multi-parameter detection on the collected water sample through its internal sensors. Specifically, this benchtop fully automatic multi-parameter water quality comprehensive analyzer has built-in pH glass electrode sensor, dissolved oxygen sensor, conductivity electrode sensor, scattered light turbidity sensor, anodic leaching voltammetric heavy metal sensor, as well as a visible light spectrophotometer for COD, ammonia nitrogen, and total phosphorus detection, and a dual-channel ultraviolet spectrophotometer for total nitrogen detection. It is also equipped with temperature and liquid level photoelectric auxiliary sensors. It can simultaneously complete the detection of all indicators including pH, dissolved oxygen, conductivity, turbidity, COD, ammonia nitrogen, total phosphorus, total nitrogen, and heavy metals, quickly obtaining specific physicochemical data of water quality and realizing the scientific evaluation of water body data.

[0053] like Figure 1 - Figure 11 As shown, a method for using an integrated water quality sampling and monitoring device includes the following steps:

[0054] S1. When it is necessary to sample the water quality of the water body, first push the fixing rod 201 to the bottom of the sampling bucket 101, hang it with the hook and the through hole 202, and connect the fixing rod 201 to the hoisting equipment such as the electric hoist. Use the hoisting equipment such as the electric hoist to put the sampling component 1 into the water body at the designated depth. After the sampling component 1 and the sampling component 2 fall into the water body and reach the designated position, the sampling component 2 will remain stationary at the designated position in the water body due to the pulling force of the hoisting equipment such as the electric hoist. The sampling component 1 and the sampling component 2 will slide downward due to their own weight, and the water body will be drawn into the sampling component 1 from the filter screen 304.

[0055] S2. If it is necessary to sample water quality at different heights in the water body, first adjust the telescopic sleeve 5 to a suitable length to ensure that the distance between the two sampling components 1 can simultaneously sample positions at different heights in the water body. Then connect the two ends of the telescopic sleeve 5 to the connecting nut 206 at the bottom of the piston 203 in one sampling component 2 and the top of the fixing rod 201 in the other sampling component 2, respectively. At the same time, pass the adjusting screw 6 through the assembly buckle 103 and use the nut to fix the position of the sampling component 1. Then repeat step S1 to achieve sampling of water at different heights.

[0056] S3. After sampling, place the individual sampling component 1 together with the protective counterweight component 3 on the base 402, and insert the drain pipe 104 on the sampling component 1 into the sampling tube 403. Introduce the collected water into the analysis instrument 401. The specific water quality can be analyzed using the existing analysis instrument to achieve water quality monitoring.

[0057] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. An integrated water quality sampling and monitoring device, comprising a monitoring module (4), characterized in that: The top of the monitoring module (4) is provided with a sampling component (1) for sampling and storing water quality. Inside the sampling component (1) is a sampling component (2) for taking water into the sampling component (1) and cleaning the inside of the sampling component (1). At the bottom of the sampling component (1) is a protective counterweight component (3) for increasing the overall weight of the sampling component (1). A telescopic sleeve (5) is provided between two adjacent sampling components (2) for adjusting the distance between two adjacent sampling components (1), and several adjusting screws (6) are provided on the side walls of two adjacent sampling components (1) for fixing the position of the sampling components (1).

2. The integrated water quality sampling and monitoring device according to claim 1, characterized in that: The sampling assembly (1) includes a sampling bucket (101), a guide frame (102) is fixedly connected to the top of the inner wall of the sampling bucket (101), a number of assembly buckles (103) that cooperate with the adjusting screw (6) are fixedly connected to the side wall of the sampling bucket (101), and a drain pipe (104) is fixedly connected to the side wall of the sampling bucket (101).

3. The integrated water quality sampling and monitoring device according to claim 2, characterized in that: A fixing frame (106) is fixedly connected to the inner wall of the drain pipe (104), and a one-way sealing module (105) is provided through the middle of the fixing frame (106).

4. The integrated water quality sampling and monitoring device according to claim 2, characterized in that: The sampling assembly (2) includes a piston (203) that slides in a sealed manner against the inner wall of the sampling bucket (101). Several sealing gaskets (204) are fixedly sleeved on the side wall of the piston (203), and a cleaning gasket (205) is fixedly connected to the bottom end of the piston (203).

5. The integrated water quality sampling and monitoring device according to claim 4, characterized in that: The piston (203) is fixedly connected to the top of the sliding through guide frame (102) with a fixed rod (201) in the middle. The top side wall of the fixed rod (201) is fixedly provided with a through hole (202). The piston (203) is fixedly connected to the bottom middle with a connecting nut (206).

6. The integrated water quality sampling and monitoring device according to claim 5, characterized in that: The protective counterweight assembly (3) includes a counterweight cover plate (301) threadedly connected to the bottom end of the sampling bucket (101), a limit frame (303) fixedly connected to the top end of the counterweight cover plate (301), and a baffle (302) slidably connected to the inner wall of the limit frame (303).

7. The integrated water quality sampling and monitoring device according to claim 6, characterized in that: The bottom end of the baffle (302) is threadedly connected to a filter screen cover (304) that slides through the top of the counterweight cover plate (301), and a threaded plug (305) is threaded through the middle of the baffle (302).

8. The integrated water quality sampling and monitoring device according to claim 6, characterized in that: The monitoring module (4) includes an analytical instrument (401), the top of which is fixedly connected to a base (402) that cooperates with a counterweight cover plate (301), and the front side of the top of the analytical instrument (401) is fixedly connected to a sampling tube (403) that cooperates with a drain pipe (104).

9. The method of using the integrated water quality sampling and monitoring device according to claim 1, wherein the integrated water quality sampling and monitoring device according to any one of claims 1 to 8 is characterized in that: Includes the following steps: S1. When it is necessary to sample the water quality of the water body, first push the fixed rod (201) to the bottom of the sampling bucket (101), hang it with the hook and the through hole (202), and connect the fixed rod (201) to the hoisting equipment such as the electric hoist. Use the hoisting equipment such as the electric hoist to put the sampling component (1) into the water body at the specified depth. After the sampling component (1) and the sampling component (2) fall into the water body and reach the specified position, the sampling component (2) remains stationary at the specified position in the water body due to the pulling force of the hoisting equipment such as the electric hoist. The sampling component (1) and the sampling component (2) slide downward due to their own weight, and the water body is drawn into the sampling component (1) from the filter screen (304). S2. If it is necessary to sample water quality at different heights in the water body, first adjust the telescopic sleeve (5) to a suitable length to ensure that the distance between the two sampling components (1) can be used to sample water at different heights simultaneously. Then connect the two ends of the telescopic sleeve (5) to the connecting nut (206) at the bottom of the piston (203) in one sampling component (2) and the top of the fixing rod (201) in the other sampling component (2). At the same time, pass the adjusting screw (6) through the assembly buckle (103) and use the nut to fix the position of the sampling component (1). Then repeat step S1 to achieve sampling of water at different heights. S3. After sampling, place the individual sampling component (1) together with the protective counterweight component (3) on the base (402), and insert the drain pipe (104) on the sampling component (1) into the sampling tube (403) to introduce the collected water into the analysis instrument (401). The specific situation of the water quality can be analyzed using the existing analysis instrument to achieve water quality monitoring.

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