Intelligent water quality monitoring device and method

Abstract

The present invention provides an intelligent water quality monitoring device and method thereof, which relate to the technical field of water quality monitoring, including a monitoring body and a monitor. A sampling component is installed in the monitoring body, the sampling component includes a sampling tube and a detection area, a detection cavity is provided in the detection area, the monitor is located in the detection cavity, a control area is provided on one side of the detection area, the control area and the detection area are connected by a water inlet pipe, one end of the control area is connected to a thin tube, and the other end of the thin tube is connected to the sampling tube, and stop valves are installed on the water inlet pipe and the thin tube for controlling the on-off of the pipeline and adjusting the number of samples entering the control area and the detection area; a piston is provided in the control area, the piston divides the control area into an upper cavity and a lower cavity, a piston rod is installed on the piston, the top of the piston rod passes through the control area and extends to the top of the control area, when the piston rod pushes the piston down, the sample flows into the upper cavity through the thin tube; when the piston moves upward, the sample in the upper cavity flows into the detection cavity through the water inlet pipe, and the sample is tested multiple times.

Description

Technical Field

[0001] The present invention belongs to the technical field of water quality monitoring, and in particular relates to an intelligent water quality monitoring device and method thereof. Background Art

[0002] In the process of industrial production, water resources are used in many places such as processing, manufacturing, and cooling. Industrial water refers to the amount of water used directly and indirectly in industrial production. In order to save water resources, the indirectly used water can be used in other processes after being tested and meeting the standards. For example, air conditioning water and cooling water can be used in processing and manufacturing.

[0003] For example, a publication number CN114814142A discloses a real-time water quality monitoring device that solves the endurance problem of existing water quality monitors. The device comprises a floating component that can float on the water surface; an adsorption component disposed on the floating component, the adsorption end of the adsorption component corresponding to a sailing vessel; a sampling component disposed on the floating component, the sampling tube of the sampling component corresponding to water, and a water quality monitor disposed within the sampling component and corresponding to the extracted water sample. By disposing the floating component, the device is made to float on the water surface, and the adsorption component is used to adsorb the monitoring device onto a vessel traveling in the water. When the vessel moves, the monitoring device can be driven to move, and water quality sampling is performed through the sampling component. The water quality monitor can realize real-time monitoring of the water quality of a larger area of ​​water. At the same time, since the monitoring device is close to the vessel, it can also monitor sewage discharged from the vessel.

[0004] The above-mentioned water quality monitor is only equipped with one detection area inside, and the purpose of detecting water quality in multiple places is achieved through repeated detection. During the detection, the water that has been tested needs to be discharged and new water is introduced. During this process, the residual water quality in the previous test will affect the accuracy of the results of the subsequent test, and the quality of a single sample cannot be adjusted in time during sampling. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligent water quality monitoring device and method thereof in order to solve the problems of the prior art.

[0006] An intelligent water quality monitoring device includes a monitoring body and a monitor. The monitoring body is equipped with a sampling assembly for extracting samples to be tested.

[0007] The sampling assembly includes a sampling tube and a detection area. The detection area is provided with a detection cavity. The monitor is located in the detection cavity. A control area is provided on one side of the detection area. The control area and the detection area are connected by a water inlet pipe. The sampling tube is tilted and arranged on the monitoring body. One end of the control area is connected to a thin tube. The other end of the thin tube is connected to the sampling tube. A connecting ring is installed between the thin tube and the sampling tube. The connecting ring is installed on the inner wall of the monitoring body.

[0008] Both the water inlet pipe and the capillary tube are equipped with shut-off valves to control the on-off of the pipeline and adjust the number of samples entering the control area and the test area;

[0009] The control area is provided with a piston, which divides the control area into an upper cavity and a lower cavity. A piston rod is installed on the piston, and the top of the piston rod passes through the control area and extends to the top of the control area. When the piston rod pushes the piston down, the sample flows into the upper cavity through the capillary tube; when the piston rod pulls the piston up, the sample in the upper cavity flows into the detection cavity through the water inlet pipe.

[0010] Furthermore, vertical poles are symmetrically installed in the monitoring body, and a supporting plate is installed on the vertical poles for placing an airbag that makes the monitoring body float on the water surface. An upper pressure plate is installed above the airbag, and the two ends of the supporting plate and the upper pressure plate are connected by a blocking rod for limiting the position of the airbag located between the supporting plate and the upper pressure plate. Anti-slip pads are provided at the top of the supporting plate and the bottom of the lower pressure plate. A plurality of circular holes are provided in the outer ring of the monitoring body, and the circular holes are arranged along the circumferential direction of the monitoring body. A built-in groove is provided at the bottom end of the circular hole.

[0011] Furthermore, a gas tank is provided in the supporting plate, and an air pipe is connected between the gas tank and the air bag for replenishing the gas in the air bag and adjusting the volume of the monitoring body immersed in the water surface.

[0012] Furthermore, the circular holes are divided into four layers from bottom to top, namely the first layer of circular holes, the second layer of circular holes, the third layer of circular holes and the fourth layer of circular holes. The first layer of circular holes is located at the bottom of the monitoring body, and the fourth layer of circular holes is located at the top of the monitoring body. The height distances between the circular holes in each layer are different. The distance from the first layer of circular holes to the second layer of circular holes is smaller than the distance from the second layer of circular holes to the third layer of circular holes, and the distance from the second layer of circular holes to the third layer of circular holes is smaller than the distance from the third layer of circular holes to the fourth layer of circular holes. The sampling tube is located between the third layer of circular holes and the fourth layer of circular holes.

[0013] Furthermore, a power assembly is installed on the monitoring body, and the power assembly includes a driving wheel, a motor frame is installed in the monitoring body, a power motor is installed on the motor frame, the motor shaft of the power motor passes through the motor frame, a connecting rod is installed on the motor shaft, a coupling is installed between the connecting rod and the motor shaft, the bottom end of the connecting rod passes through the monitoring body and is sleeved with a transmission wheel, a support rod is provided on one side of the connecting rod, the top of the support rod is connected to the monitoring body, a power shaft is rotatably connected to the support rod, one end of the power shaft is sleeved with a power wheel meshing with the transmission wheel, and the other end of the power shaft is sleeved with a driving wheel, and the transmission wheel and the power wheel are bevel gears.

[0014] Furthermore, a threaded sleeve is connected between the connecting rod and the monitoring body, the threaded sleeve and the monitoring body are welded as one piece, the threaded sleeve is arranged on the connecting rod, and the threaded sleeve and the connecting rod are rotatably connected, the monitoring body is coated with waterproof material, and a cover plate is threadedly connected to the monitoring body.

[0015] Furthermore, a push-pull cylinder is installed on the monitoring body, and a lifting plate is connected to the bottom end of the push-pull cylinder. The lifting plate controls the rise and fall of the piston rod. A limit piece is provided on the lifting plate, and a center hole is provided on the limit piece. The piston rod passes through the center hole, and a limit groove 1 is provided on the piston rod, and a limit groove 2 is provided on the limit piece. The piston rod and the limit piece are clearance-fitted, and a limit ring is clamped between the piston rod and the limit piece. A clamping block is symmetrically provided on the limit ring, and the clamping block is located in the limit groove 1 and the limit groove 2. A hydraulic push rod is connected between the piston rod and the limit ring.

[0016] Furthermore, a wastewater area is provided on one side of the detection area, a drainage pipe is connected between the wastewater area and the detection area, a water pump and a stop valve are installed on the drainage pipe, and the stop valve is close to the detection area.

[0017] Furthermore, the wastewater area, detection area and control area form a group of monitoring components, and multiple groups of monitoring components are installed on the upper pressure plate.

[0018] Based on the above intelligent water quality monitoring device, the present invention also proposes a method for an intelligent water quality monitoring device, comprising the following steps:

[0019] Step 1: Place the monitoring body in the water area to be tested, and let water enter the built-in groove of the second-layer circular hole;

[0020] Step 2: The stop valve on one of the thin tubes on the monitoring body is opened, and part of the gas in the air bag returns to the gas tank through the air pipe. The monitoring body sinks, and the sample enters the sampling tube and the thin tube;

[0021] Step 3: The gas in the gas tank returns to the air bag through the trachea, and the monitoring body moves upward;

[0022] Step 4: The push-pull cylinder pushes the lifting plate downward, and the sample flows into the upper chamber. The stop valve on the capillary tube closes, the stop valve on the water inlet pipe opens, the piston moves upward, and the sample enters the detection chamber through the water inlet pipe. The monitor detects the sample.

[0023] Step 5: The power motor drives the connecting rod to rotate, and the power wheel rotates, so that the monitoring body moves to another place and repeats the above sampling action.

[0024] The beneficial effects of the present invention are:

[0025] 1. A control area is provided between the sampling tube and the detection area to control the number of samples entering the detection chamber, thereby preventing too few or too many samples from entering the detection chamber, which would make detection inconvenient and affect the test results. At the same time, the same water sample can also be tested multiple times.

[0026] 2. The monitoring body is equipped with multiple groups of monitoring components. When the monitored water area is large, the water quality in multiple places can be tested to achieve the purpose of small amounts and multiple times. Water samples from different areas are tested through different monitoring components to improve the accuracy of the test results.

[0027] 3. The monitoring body is equipped with an air bag and an air tank, which can adjust the volume of the monitoring body immersed in the water at any time. When the monitoring body moves up, it is convenient for the monitoring body to move, and samples from different places can be extracted for testing. When the monitoring body moves down, it is convenient for the samples to enter the sampling tube.

[0028] 4. The monitoring body is equipped with a power component. After sampling is completed at one location, the monitoring body can automatically drift to another location for sampling and testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 It is a front view of the present invention;

[0031] Figure 2 It is a left side view of the present invention;

[0032] Figure 3 It is a left side view of the air bag of the present invention;

[0033] Figure 4 is a front view of the sampling assembly of the present invention;

[0034] Figure 5 is a top view of the upper pressing plate in embodiment 1 of the present invention;

[0035] Figure 6 is a top view of the upper pressing plate in the second embodiment of the present invention;

[0036] Figure 7 is a cross-sectional view of the control area of ​​the present invention;

[0037] Figure 8 is a top view of the position limiting member of the present invention;

[0038] Figure 9 is a cross-sectional view of a position limiting member of the present invention;

[0039] Figure 10 is a top view of the limit ring of the present invention;

[0040] Figure 11 is a cross-sectional view of the limit ring of the present invention;

[0041] Figure 12 The present invention Figure 2 A magnified view of part A in FIG;

[0042] Figure 13 It is a left view of the power assembly of the present invention.

[0043] The following are marked in the figure: 1. monitoring body;

[0044] 101. Circular hole; 102. Built-in groove; 103. Cover plate; 104. Vertical pole; 105. Anti-slip pad; 106. Air bag; 107. Upper pressure plate; 108. Blocking rod; 109. Air pipe; 110. Air tank; 111. Loading plate;

[0045] 2. Sampling tube;

[0046] 201, upper chamber; 202, push-pull cylinder; 203, lifting plate; 204, connecting ring; 205, wastewater area; 206, water pump; 207, drain pipe; 208, stop valve; 209, monitor; 210, detection area; 211, detection chamber; 212, water inlet pipe; 213, piston rod; 214, control area; 215, capillary tube; 216, piston; 217, lower chamber; 218, hydraulic push rod;

[0047] 3. Limiting ring;

[0048] 301, limiting groove 1; 302, limiting member; 303, limiting groove 2; 304, clamping block;

[0049] 4. Driving wheel;

[0050] 401. Transmission wheel; 402. Power wheel; 403. Power motor; 404. Threaded sleeve; 405. Motor frame; 406. Coupling; 407. Waterproof material; 408. Connecting rod; 409. Support rod; 410. Power shaft. DETAILED DESCRIPTION

[0051] Example 1

[0052] like Figure 2 and Figure 4 As shown, an intelligent water quality monitoring device includes a monitoring body 1 and a monitor 209. A cover plate 103 is threadedly connected to the monitoring body 1. A detection area 210 is provided in the monitoring body 1. A detection cavity 211 is provided in the detection area 210. The monitor 209 is located in the detection cavity 211. A sampling component is installed in the monitoring body 1. The sampling component includes a sampling tube 2. Samples are extracted through the sampling tube 2. The monitoring body 1 is located in the detection water area. Part of the sample is extracted into the detection cavity 211 through the sampling component, and then the sample is detected by the monitor 209.

[0053] In order to facilitate the control of the number of samples entering the detection chamber 211 , a control area 214 is provided between the detection area 210 and the sampling tube 2 , and the control area 214 and the detection area 210 are connected via a water inlet pipe 212 .

[0054] like Figure 1As shown, sampling tube 2 is tilted and positioned on monitoring body 1, with the water inlet at the top of sampling tube 2 at a higher level than the water outlet. A capillary tube 215 is connected to one end of control area 214, and the other end of capillary tube 215 is connected to sampling tube 2. The diameter of capillary tube 215 is smaller than that of sampling tube 2 to reduce the flow rate of the water sample. To ensure the sealing performance of monitoring body 1, a connecting ring 204 is installed between capillary tube 215 and sampling tube 2. Connecting ring 204 is mounted on the inner wall of monitoring body 1.

[0055] like Figure 7 As shown, a piston 216 is provided in the control area 214, and the piston 216 divides the control area 214 into an upper cavity 201 and a lower cavity 217. A piston rod 213 is installed on the piston 216. The top end of the piston rod 213 passes through the control area 214 and extends to the top of the control area 214. The purpose of extracting samples is achieved by the pressure difference between the upper cavity 201 and the lower cavity 217. A power structure is connected to the piston rod 213, which is used to make the piston rod 213 rise and fall. When the piston rod 213 pushes the piston 216 down, the sample flows into the upper cavity 201 through the capillary 215; when the piston rod 213 pulls the piston 216 up, the sample in the upper cavity 201 flows into the detection cavity 211 through the water inlet pipe 212.

[0056] In order to cooperate with the movement of the piston 216 and further control the number of samples to be tested, a stop valve 208 is installed on the water inlet pipe 212 and the capillary tube 215 to control the on-off of the pipeline and adjust the number of samples entering the control area 214 and the detection area 210. In addition, it is also possible to perform multiple small-scale tests on the samples in the same sampling tube 2.

[0057] like Figure 4 and Figure 7 As shown, during operation, the stop valve 208 on the water inlet pipe 212 is closed, and the stop valve 208 on the capillary tube 215 is opened. As the piston 216 slowly moves downward, the sample in the sampling tube 2 enters the upper cavity 201. The highest water level of the sample in the upper cavity 201 is lower than the height of the water inlet pipe 212.

[0058] The stop valve 208 on the capillary 215 is closed, and the stop valve 208 on the water inlet pipe 212 is opened. As the piston 216 slowly moves upward, the sample in the upper cavity 201 enters the detection cavity 211. When the number of samples entering the detection cavity 211 reaches the detection amount, the stop valve on the water inlet pipe 212 is closed, and the sample is detected by the monitor 209.

[0059] The control area 214 is located on one side of the detection area 210 , and a wastewater area 205 is provided on the other side of the detection area 210 in order to achieve multiple detection of small amounts of samples extracted from the sampling tube 2 .

[0060] A drain pipe 207 is connected between the wastewater area 205 and the detection area 210. A water pump 206 and a stop valve 208 are installed on the drain pipe 207. The water pump 206 is used to extract the samples that have been tested in the detection chamber 211 into the wastewater area 205 so that the detection chamber 211 can perform the next test. The stop valve 208 on the drain pipe 207 is close to the detection area 210. The stop valve 208 on the drain pipe 207 is opened when the water pump 206 is working, and is closed at other times. The wastewater area 205, the detection area 210 and the control area 214 are a group of monitoring components. In order to detect samples in different areas of the water area multiple times, multiple groups of monitoring components are provided in the monitoring body 1.

[0061] like Figure 2 As shown, vertical poles 104 are symmetrically installed in the monitoring body 1, and a supporting plate 111 is installed on the vertical pole 104, which is used to place an air bag 106 that makes the monitoring body 1 float on the water surface. An upper pressure plate 107 is installed above the air bag 106, and the two ends of the supporting plate 111 and the upper pressure plate 107 are connected by a blocking rod 108. The top end of the supporting plate 111 and the bottom end of the lower pressure plate 107 are provided with an anti-slip pad 105.

[0062] The monitoring assembly is installed on the upper pressure plate 107. The number of sampling tubes 2 on the monitoring body 1 corresponds to the number of monitoring assemblies in the monitoring body 1, so that multiple samples from the same water area can be extracted for testing, and the samples are tested in different testing chambers 211 to ensure the accuracy of the test results.

[0063] In addition, by arranging blocking rods 108 at both ends of the supporting plate 111 and the upper pressing plate 107 , the position of the airbag 106 located between the supporting plate 111 and the upper pressing plate 107 is also limited.

[0064] like Figure 3 As shown, a gas tank 110 is provided in the supporting plate 111 , and an air pipe 109 is connected between the gas tank 110 and the air bag 106 for replenishing the gas in the air bag 106 and adjusting the volume of the monitoring body 1 immersed in the water surface so that the sampling tube 2 can extract samples.

[0065] like Figure 5 As shown, the detection area 210, the control area 214, and the wastewater area 205 are rectangular boxes.

[0066] Based on the above intelligent water quality monitoring device, the present invention also proposes a method for an intelligent water quality monitoring device, comprising the following steps:

[0067] The monitoring body 1 is placed in the water area to be tested, the stop valve on the capillary 215 is opened, and part of the gas in the air bag 106 returns to the gas tank 110 through the air pipe 109. The monitoring body 1 sinks, and the sample around the monitoring body 1 enters the sampling tube 2 and the capillary 215.

[0068] After the sampling tube 2 has finished taking the sample, the gas in the gas tank 110 returns to the air bag 106 through the air pipe 109, and the monitoring body 1 moves upward;

[0069] The power mechanism pushes down the piston rod 213, and the piston 216 slowly moves down. The sample flows into the upper cavity 201, the stop valve on the capillary 215 closes, and the stop valve on the water inlet pipe 212 opens. The piston 216 moves up, and the sample enters the detection cavity 211 through the water inlet pipe 212. The monitor 209 detects the sample. The opening and closing of the above-mentioned stop valves and the actions of the gas tank and the air bag are completed by the control system of the monitoring body 1.

[0070] Example 2

[0071] Based on the above embodiment 1, Figure 6 As shown, the detection area 210, the control area 214, and the wastewater area 205 are cylindrical boxes. In order to make full use of the space on the upper pressure plate 107, and also to expand the capacity of the detection area 210, the control area 214, and the wastewater area 205 so as to extract more detection samples, the other structures and principles in this embodiment are the same as those in embodiment 1.

[0072] Example 3

[0073] Based on the above embodiment 2, Figure 1 As shown, since the monitoring body 1 needs to sink for sampling, in order to ensure the stability of sampling, a plurality of circular holes 101 are provided on the outer ring of the monitoring body 1. The circular holes 101 are arranged along the circumferential direction of the monitoring body 1, and a built-in groove 102 is provided at the bottom end of the circular hole 101. The other components and principles in this embodiment are the same as those in Example 2.

[0074] The circular holes 101 are divided into four layers from bottom to top, namely the first layer of circular holes, the second layer of circular holes, the third layer of circular holes and the fourth layer of circular holes. The first layer of circular holes is located at the bottom of the monitoring body 1, and the fourth layer of circular holes is located at the top of the monitoring body 1. The height distances between the circular holes in each layer are different. The distance from the first layer of circular holes to the second layer of circular holes is smaller than the distance from the second layer of circular holes to the third layer of circular holes, and the distance from the second layer of circular holes to the third layer of circular holes is smaller than the distance from the third layer of circular holes to the fourth layer of circular holes. The sampling tube 2 is located between the third layer of circular holes and the fourth layer of circular holes.

[0075] When the monitoring body 1 sinks, water enters the built-in groove 102, so that the bottom of the monitoring body 1 remains stable so that it sinks smoothly.

[0076] Example 4

[0077] Based on the above embodiment 3, Figure 1-Figure 2 、 Figure 12-13 As shown, a power assembly is installed on the monitoring body 1, which enables the monitoring body 1 to automatically move to different areas of the water area for sampling. At this time, the sampling tubes 2 are staggeredly arranged on the monitoring body 1. The other components and principles of this embodiment are the same as those of Example 3.

[0078] The power assembly includes a driving wheel 4, a motor frame 405 is installed in the monitoring body 1, a power motor 403 is installed on the motor frame 405, the motor shaft of the power motor 403 passes through the motor frame 405, a connecting rod 408 is installed on the motor shaft, a coupling 406 is installed between the connecting rod 408 and the motor shaft, and the bottom end of the connecting rod 408 passes through the monitoring body 1 and is sleeved with a transmission wheel 401.

[0079] A support rod 409 is provided on one side of the connecting rod 408, and the top of the support rod 409 is connected to the monitoring body 1. A power shaft 410 is rotatably connected to the support rod 409. One end of the power shaft 410 is provided with a power wheel 402 that engages with the transmission wheel 401, and the other end of the power shaft 410 is provided with a driving wheel 4. The transmission wheel 401 and the power wheel 402 are bevel gears.

[0080] The power motor 403 transmits power to the connecting rod 408, and the transmission wheel 401 mounted on the connecting rod 408 rotates. Since the power wheel 402 is engaged with the transmission wheel 401, the power shaft 410 rotates and the driving wheel 4 rotates. At this time, the monitoring body 1 moves and continues to repeat the sampling and detection actions.

[0081] In order to further ensure the sealing performance of the monitoring body 1, a threaded sleeve 404 is connected between the connecting rod 408 and the monitoring body 1. The threaded sleeve 404 is welded to the monitoring body 1 as a whole. The threaded sleeve 404 is sleeved on the connecting rod 408, and the threaded sleeve 404 and the connecting rod 408 are rotatably connected. The monitoring body 1 is coated with waterproof material 407 to prevent water from entering the interior of the monitoring body 1.

[0082] In order to carry out sampling with the sampling tube, Figure 2 , Figures 8-11 As shown, a power structure is installed on the monitoring body 1, and the power structure includes a push-pull cylinder 202, and the bottom end of the push-pull cylinder 202 is connected to a lifting plate 203, and the lifting plate 203 controls the rise and fall of the piston rod 213. A limit piece 302 is provided on the lifting plate 203, and a center hole is provided on the limit piece 302, and the piston rod 213 passes through the center hole. A limit groove 1 301 is provided on the piston rod 213, and a limit groove 2 303 is provided on the limit piece 302. The piston rod 213 and the limit piece 302 are clearance-matched, and a limit ring 3 is clamped between the piston rod 213 and the limit piece 302. A clamping block 304 is symmetrically provided on the limit ring 3, and the clamping block 304 is located in the limit groove 1 301 and the limit groove 2 303.

[0083] Since the sampling tubes 2 are arranged in a staggered manner on the monitoring body 1, each sampling tube 2 is sampled separately. In order to prevent the piston 216 from repeating unnecessary movements, the piston rod 213 and the lifting plate 203 are locked by the limit ring 3. A hydraulic push rod 218 connected to the limit ring 3 is installed on the top of the piston rod 213. When the corresponding sampling tube 2 is sampling, the hydraulic push rod 218 pushes the limit ring 3 into the limit part 302, so that the clamping block 304 is clamped with the limit groove 2 303 and the limit groove 1 301, so that the corresponding piston rod works together with the lifting plate 203.

[0084] The push-pull cylinder 202 pushes the lifting plate 203 downward, the piston 216 moves downward, the sample flows into the upper cavity 201, the stop valve on the capillary 215 is closed, the stop valve on the water inlet pipe 212 is opened, the push-pull cylinder 202 pulls up the lifting plate 203, the piston 216 moves upward, the sample enters the detection cavity 211 through the water inlet pipe 212, and the monitor 209 detects the sample.

[0085] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An intelligent water quality monitoring device, comprising a monitoring body and a monitor, wherein a sampling assembly is installed in the monitoring body for extracting a sample to be tested, characterized in that: The sampling assembly includes a sampling tube and a detection area. The detection area is provided with a detection cavity. The monitor is located in the detection cavity. A control area is provided on one side of the detection area. The control area and the detection area are connected by a water inlet pipe. The sampling tube is tilted and arranged on the monitoring body. One end of the control area is connected to a thin tube. The other end of the thin tube is connected to the sampling tube. A connecting ring is installed between the thin tube and the sampling tube. The connecting ring is installed on the inner wall of the monitoring body. Both the water inlet pipe and the capillary tube are equipped with shut-off valves to control the on-off of the pipeline and adjust the number of samples entering the control area and the test area; The control area has a piston disposed therein, which divides the control area into an upper cavity and a lower cavity. A piston rod is mounted on the piston, the top of which passes through the control area and extends above the control area. When the piston rod pushes the piston downward, the sample flows into the upper cavity through the capillary tube; when the piston rod pulls the piston upward, the sample in the upper cavity flows into the detection cavity through the water inlet pipe. The monitoring body is symmetrically installed with vertical poles, and a bearing plate is installed on the vertical poles for placing an airbag that suspends the monitoring body on the water surface. An upper pressure plate is installed above the airbag, and the two ends of the bearing plate and the upper pressure plate are connected by a blocking rod for limiting the position of the airbag between the bearing plate and the upper pressure plate. The top end of the bearing plate and the bottom end of the lower pressure plate are provided with anti-slip pads. A plurality of circular holes are provided on the outer ring of the monitoring body, and the circular holes are arranged along the circumferential direction of the monitoring body. The bottom ends of the circular holes are provided with built-in grooves. The circular holes are divided into four layers from bottom to top, namely the first layer of circular holes, the second layer of circular holes, the third layer of circular holes and the fourth layer of circular holes. The first layer of circular holes is located at the bottom of the monitoring body, and the fourth layer of circular holes is located at the top of the monitoring body. The height distances between the circular holes in each layer are different. The distance from the first layer of circular holes to the second layer of circular holes is smaller than the distance from the second layer of circular holes to the third layer of circular holes, and the distance from the second layer of circular holes to the third layer of circular holes is smaller than the distance from the third layer of circular holes to the fourth layer of circular holes. The sampling tube is located between the third layer of circular holes and the fourth layer of circular holes.

2. The intelligent water quality monitoring device according to claim 1, characterized in that: A gas tank is provided in the bearing plate, and an air pipe is connected between the gas tank and the air bag for replenishing the gas in the air bag and adjusting the volume of the monitoring body immersed in the water surface.

3. The intelligent water quality monitoring device according to claim 1, characterized in that: A power assembly is installed on the monitoring body, and the power assembly includes a driving wheel, a motor frame is installed in the monitoring body, a power motor is installed on the motor frame, the motor shaft of the power motor passes through the motor frame, a connecting rod is installed on the motor shaft, a coupling is installed between the connecting rod and the motor shaft, the bottom end of the connecting rod passes through the monitoring body and is sleeved with a transmission wheel, a support rod is provided on one side of the connecting rod, the top of the support rod is connected to the monitoring body, a power shaft is rotatably connected to the support rod, one end of the power shaft is sleeved with a power wheel meshing with the transmission wheel, and the other end of the power shaft is sleeved with a driving wheel, and the transmission wheel and the power wheel are bevel gears.

4. The intelligent water quality monitoring device according to claim 3, characterized in that: A threaded sleeve is connected between the connecting rod and the monitoring body. The threaded sleeve and the monitoring body are welded as one piece. The threaded sleeve is arranged on the connecting rod, and the threaded sleeve and the connecting rod are rotatably connected. The monitoring body is coated with waterproof material, and a cover plate is threadedly connected to the monitoring body.

5. The intelligent water quality monitoring device according to claim 1, characterized in that: A push-pull cylinder is installed on the monitoring body, and a lifting plate is connected to the bottom end of the push-pull cylinder. The lifting plate controls the rise and fall of the piston rod. A limit piece is provided on the lifting plate, and a center hole is provided on the limit piece. The piston rod passes through the center hole, and a limit groove 1 is provided on the piston rod. A limit groove 2 is provided on the limit piece. The piston rod and the limit piece are clearance-matched, and a limit ring is clamped between the piston rod and the limit piece. A clamping block is symmetrically provided on the limit ring, and the clamping block is located in the limit groove 1 and the limit groove 2. A hydraulic push rod is connected between the piston rod and the limit ring.

6. The intelligent water quality monitoring device according to claim 1, characterized in that: A wastewater area is provided on one side of the detection area. A drainage pipe is connected between the wastewater area and the detection area. A water pump and a stop valve are installed on the drainage pipe. The stop valve is close to the detection area.

7. The intelligent water quality monitoring device according to claim 6, characterized in that: The wastewater area, detection area and control area form a group of monitoring components, and multiple groups of monitoring components are installed on the upper pressure plate.

8. A method for using the intelligent water quality monitoring device according to any one of claims 1 to 7, comprising the following steps: Step 1: Place the monitoring body in the water area to be tested, and let water enter the built-in groove of the second-layer circular hole; Step 2: The stop valve on one of the thin tubes on the monitoring body is opened, and part of the gas in the air bag returns to the gas tank through the air pipe. The monitoring body sinks, and the sample enters the sampling tube and the thin tube; Step 3: The gas in the gas tank returns to the air bag through the trachea, and the monitoring body moves upward; Step 4: The push-pull cylinder pushes the lifting plate downward, and the sample flows into the upper chamber. The stop valve on the capillary tube closes, the stop valve on the water inlet pipe opens, the piston moves upward, and the sample enters the detection chamber through the water inlet pipe. The monitor detects the sample. Step 5: The power motor drives the connecting rod to rotate, and the power wheel rotates, so that the monitoring body moves to another place and repeats the sampling action.

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