River water quality detection device for environmental monitoring

Abstract

The invention discloses a river water quality detection device for environmental monitoring, which comprises a position-adjustable sample collection assembly floating on the river surface, the height of the sample collection assembly is adjustable, and river water samples of different depths are collected and independently stored; a mounting frame is buried beside a river channel, a detection assembly is arranged at the top of the mounting frame, a connecting assembly is arranged on the side edge of the mounting frame in a lifting mode, a liquid pump is installed between the connecting assembly and the detection assembly in a communicating mode, and the connecting assembly is connected with a sample collection assembly in an adjusting mode. The sample collecting assembly comprises a floating ring, a first liquid collecting bin, a second liquid collecting bin, a third liquid collecting bin and the like, the first liquid collecting bin, the second liquid collecting bin and the third liquid collecting bin are distributed inside and outside, and under the action of buoyancy, the floating ring, the first liquid collecting bin, the second liquid collecting bin and the third liquid collecting bin stably float on the river surface and can be pushed to a certain position of river water under the action of external force; and then the heights of the second liquid collection bin and the third liquid collection bin are adjusted to complete collection of river water of different depths, and support is provided for improving the representativeness of monitoring data.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water quality detection, in particular to a river water quality detection device for environmental monitoring. BACKGROUND

[0002] Water resources, as the core element of ecological environment, its quality directly related to ecological balance, public health and social sustainable development. River water quality monitoring as an important basis for water resources protection and pollution control, is the key means to master the water environment dynamics, assess the effectiveness of governance, and early warning of pollution risk. However, in the current water quality monitoring technology system, the traditional manual sampling detection method and the conventional online monitoring system have significant limitations, which is difficult to meet the needs of fine water environment management.

[0003] Traditional manual sampling detection has long relied on manual periodic on-site sampling of water samples, and then taking them back to the laboratory for analysis. This method has inherent defects: first, the real-time performance is very poor, the sampling period is usually once a day to once a month, it is difficult to capture instantaneous pollution events (such as sudden pollution, accident leakage), and the serious data lag seriously restricts the efficiency of pollution emergency response; second, the cost is high, a large amount of manpower and material resources are needed for sampling, transportation and laboratory analysis, especially for areas with wide river basin and dense monitoring points, the long-term operation burden is heavy; third, the coverage is limited, due to the limitation of manpower allocation, it is difficult to achieve high-density distribution of monitoring points in the whole river basin, which is easy to cause local pollution to be missed and cannot fully reflect the overall water quality of the river.

[0004] In order to make up for the shortcomings of manual sampling, conventional online monitoring systems for river water quality have been gradually popularized and applied, which realizes continuous automatic monitoring by arranging sensors at monitoring points. However, the existing online monitoring technology still faces prominent technical bottlenecks, among which the performance degradation of sensors is particularly significant. Since the sensor needs to be immersed in the complex water environment for a long time, it is easily affected by the growth and attachment of algae and microorganisms, and the coverage and deposition of suspended particles (such as silt and organic debris). For optical sensors (such as turbidity and COD sensors), the attachment of pollutants will block the light path, causing light signal attenuation or scattering abnormalities, and the measurement accuracy will be greatly reduced; for electrode sensors (such as pH and dissolved oxygen sensors), surface pollution will destroy the electrochemical balance between the electrode and the water, causing potential deviation or response delay, which will directly cause the measurement value to be distorted. Such problems are particularly serious in eutrophic water bodies, high-turbidity river sections during flood season, or areas with high pollution load, not only increasing the frequency of sensor cleaning and calibration, and the operation and maintenance cost, but also more likely to cause misjudgment due to data deviation, affecting the scientificity of pollution control decision-making.

[0005] In addition, the sensor position of the conventional online monitoring equipment is fixed and lacks the ability to adjust flexibly. Due to the water flow dynamics, the distribution of pollution sources along the river bank and other factors, there are obvious spatial differences in water quality at different points (such as the river bank and the river center, the shallow water area and the deep water area), and the fixedly installed sensor can only monitor the water quality at a single point, cannot realize dynamic scanning monitoring of the river section, different water layers or pollution sensitive areas, and is difficult to fully capture the spatial heterogeneity of water quality, resulting in insufficient representativeness of the monitoring data and serious impact on the accuracy. SUMMARY

[0006] The purpose of the present application is to provide a river water quality detection device for environmental monitoring, aiming to improve the poor real-time performance of manual detection and the problem of pollution of conventional online detection sensors soaked in river water for a long time.

[0007] The present application is implemented as follows: a river water quality detection device for environmental monitoring, comprising a sample collection assembly floating on the river surface with adjustable position, the sample collection assembly can collect river water samples at different depths with adjustable height and store independently; an installation frame is buried on the river bank, a detection assembly is arranged on the top of the installation frame, and a connecting assembly is arranged on the side of the installation frame in a lifting manner, a liquid pump is arranged in communication between the connecting assembly and the detection assembly, and the connecting assembly is connected to the sample collection assembly in a regulating manner, and the liquid pump sequentially pumps the samples at different points to the detection assembly.

[0008] Preferably, the sample collection assembly comprises a floating ring, a propeller arranged on the outer side of the floating ring and driving the floating ring to move, a first liquid collection bin, a second liquid collection bin and a third liquid collection bin arranged adjacent to each other on the inner side of the floating ring, the top of the first liquid collection bin is fixed relative to the floating ring, the second liquid collection bin is located on the inner side of the first liquid collection bin, and the third liquid collection bin is located on the inner side of the second liquid collection bin.

[0009] Preferably, a support shell is arranged on the upper side of the floating ring in a fitting manner, a plurality of limiting arc plates are hingedly arranged at the inner edge below the support shell, and the limiting arc plates are arranged below the floating ring in a fitting manner and are detachably connected to the end of the support shell.

[0010] Preferably, a rudder is arranged on the upper side of the propeller to adjust the direction of the propeller, and a support plate on the upper side of the rudder is fixedly connected to the support shell; an electrical control box is arranged on the upper side of the support plate, and the electrical control box is electrically connected to the propeller and the rudder.

[0011] Preferably, the first liquid collection bin, the second liquid collection bin and the third liquid collection bin are all arranged as an arc-shaped bin structure with an open bottom, a piston is arranged on the inner side of the arc-shaped bin, at least two liquid pipes are arranged in communication on the top of the arc-shaped bin, an electromagnetic valve is arranged on each liquid pipe, and the top of one of the liquid pipes is immersed in the river water.

[0012] Preferably, a bottom rod is fixedly arranged below the piston, a sliding sleeve is arranged on the bottom rod, and the limiting frame is detachably installed at the bottom of the arc-shaped bin; the upper and lower ends of the arc-shaped bin on the same circle are respectively installed on the top ring plate and the bottom ring plate, the top ring plate and the bottom ring plate are in sliding contact with the outer arc-shaped bin and are both installed on the vertical rod, the bottom of the vertical rod and the bottom rod are connected through the connecting plate, and the connecting plate is located below the arc-shaped bin; the piston drives the inner arc-shaped bin to descend during the process of injecting river water into the outer arc-shaped bin.

[0013] Preferably, a connecting ring plate is detachably installed at the top of the first liquid collecting bin on the outer side, and a supporting arc plate is fixedly arranged above the connecting ring plate and is arranged above the supporting shell.

[0014] Preferably, the connecting assembly comprises a lifting plate, a connecting frame hingedly arranged below the end of the lifting plate, and adapter pipes respectively installed at the two ends of the connecting frame; the adapter pipes are arranged in a three-way structure, and an electromagnetic valve is installed at each end of the top of the adapter pipe; the connecting frame comprises a middle pipe and two insertion plates respectively inserted into the two ends of the middle pipe, a rotating shaft is arranged on the side of the middle pipe, the two ends of the rotating shaft having opposite screw structures are respectively screwed through the insertion plates, and the rotating shaft is controlled to rotate by a second motor; a convex shaft fixedly arranged on the middle part of the middle pipe is connected to the inside of the lifting plate through a bearing, and a first motor installed on the side of the lifting plate is connected to the convex shaft through a gear; the two adapter pipes are respectively connected to the clamps at the ends away from each other through the two insertion plates; the end of the lifting plate is slidably sleeved on the mounting bracket, and the end of the lifting plate is threadedly sleeved with a lead screw, the end of the lead screw is connected to the power output shaft of a third motor, and the third motor is connected to the mounting bracket.

[0015] Preferably, a fastening mechanism is installed at the bottom of the adapter pipe, the bottom of the adapter pipe is matched with the top of the liquid pipe, the fastening mechanism is sealingly connected to the adapter pipe and the liquid pipe; the fastening mechanism comprises a lifting ring plate, two buckle plates located below the lifting ring plate, and an inclined connecting frame hingedly connecting the lifting ring plate and the buckle plate, the lifting ring plate is sleeved on the adapter pipe, the top of the buckle plate is sleeved on the guide rod of the adapter pipe, and a threaded column screwed through the lifting ring plate is connected to the power output shaft of a fourth motor; the inner space of the two buckle plates is arranged in a trapezoidal structure, and the larger one of the two buckle plates is first sleeved on the adapter pipe and the liquid pipe.

[0016] Preferably, the detection assembly comprises a bottom bin with an open top and a top bin with an open bottom, and a partition plate installed between the bottom bin and the top bin; a control system is arranged on the inner side of the top bin, a plurality of sensors are arranged through the partition plate, and the bottom of the sensor extends into the bottom bin; an inlet and outlet pipe is arranged through the bottom of the bottom bin, one of the inlet and outlet pipes is connected to the output end of a liquid pump, and the input end of the liquid pump is connected to the end of the adapter pipe; a sleeve detachably installed on the top of the mounting bracket is arranged below the bottom bin.

[0017] Compared with the prior art, the present application has the following advantages: 1. The sample collection assembly provided by the present invention includes a floating ring, a first liquid collection chamber, a second liquid collection chamber, and a third liquid collection chamber distributed inside and outside. Under the action of buoyancy, the floating ring, the first liquid collection chamber, the second liquid collection chamber, and the third liquid collection chamber float stably on the river surface and can be pushed to a certain position in the river water under the action of external force. Then, the height of the second liquid collection chamber and the third liquid collection chamber can be adjusted to complete the collection of river water at different depths, providing support for improving the representativeness of monitoring data.

[0018] 2. The first, second, and third liquid collection bins provided in the present invention are all configured as arc-shaped bin structures with an open bottom, and a piston is provided inside. At the same time, the piston is connected to the inner liquid collection bin. Therefore, when the outer bin is used to collect river water of a corresponding depth, the inner liquid collection bin is forced to descend, thereby adjusting the height of the second and third liquid collection bins to collect river water at different depths.

[0019] 3. The present invention is also provided with a connecting component, a liquid pump, a detection component, etc., and the connecting component can be lowered and first connected to the top of the first liquid collection tank after the sample collection component moves to the side of the detection component. The liquid pump pumps the sample in the first liquid collection tank to the detection component to complete the detection of the water quality at the corresponding depth; during the sample output process, the piston drives the second liquid collection tank to rise, which facilitates the connection component to adjust its state and communicate with the top of the second liquid collection tank, thereby facilitating the detection of samples at different depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a first structural schematic diagram of the present invention as a whole; Figure 2 It is a second structural schematic diagram of the present invention as a whole; Figure 3 It is a third structural schematic diagram of the present invention as a whole; Figure 4 is a schematic structural diagram of the sample collection assembly of the present invention; Figure 5 It is a structural schematic diagram of the floating ring and propeller of the present invention; Figure 6 This is a structural diagram of the first liquid collection bin, the second liquid collection bin, the third liquid collection bin, and the connecting ring plate of the present invention; Figure 7 It is a structural schematic diagram of the connecting ring plate of the present invention; Figure 8 It is a structural schematic diagram of the first liquid collection bin of the present invention; Figure 9 It is a structural schematic diagram of the second liquid collection bin of the present invention; Figure 10 It is a structural schematic diagram of the detection component, liquid pump, and mounting bracket of the present invention; Figure 11is a first structural schematic diagram of the connection assembly of the present invention; Figure 12 is a second structural schematic diagram of the connection assembly of the present invention; Figure 13 It is a structural schematic diagram of the connecting frame of the present invention; Figure 14 It is a structural schematic diagram of the fastening mechanism of the present invention; Figure 15 It is a structural schematic diagram of the detection component of the present invention.

[0021] In the figure: 1. Sample collection assembly; 11. Floating ring; 111. Support shell; 112. Limiting arc plate; 12. Electrical control box; 13. Propeller; 131. Servo; 14. First liquid collection chamber; 141. First solenoid valve; 142. Stud; 143. Piston; 144. Bottom rod; 145. Limiting frame; 15. Second liquid collection chamber; 151. Connecting plate; 152. Top ring plate; 153. Vertical rod; 154. Bottom ring plate; 16. Third liquid collection chamber; 17. Connecting ring plate; 171. Supporting arc plate; 172. Ear plate; 2. Connecting assembly; 21. Lifting plate; 22. Transfer pipe; 221. Second solenoid valve; 222. Third solenoid valve; 23. Fastening mechanism; 231. Lifting ring plate; 232. Oblique connecting frame; 233. Buckle plate; 234. Fourth motor; 235. Guide rod; 236. Threaded column; 24. Industrial camera; 25. First motor; 26. Connecting frame; 261. Rotating shaft; 262. Threaded structure; 263. Second motor; 264. Intermediate pipe; 265. Plug-in board; 266. Clamp; 3. Detection component; 31. Bottom bin; 32. Isolation plate; 33. Top bin; 34. Control system; 35. Sensor; 36. Sleeve; 37. Inlet and outlet pipes; 4. Liquid pump; 5. Mounting frame; 51. Embedded rod; 52. Screw; 53. Third motor; 6. Cleaning liquid barrel. DETAILED DESCRIPTION In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0022] The following is a further description with reference to the accompanying drawings and specific embodiments: In order to change the defect of artificial field collection of water samples and then taking back to the laboratory for analysis, and avoid the influence of the long-time immersion of the sensor in the river water on the detection accuracy of the online water quality detection, and avoid the lack of representativeness of the monitoring data caused by fixed-point detection, the embodiment provides a new device for online detection of river water quality.

[0023] As shown in Figures 1-3 , the river water quality online detection device includes a sample collection assembly 1, a detection assembly 3, a liquid pump 4, etc. The sample collection assembly 1 is floatingly arranged on the river surface, and the sample collection assembly 1 has a traveling function, so it can move on the river surface according to the sample collection requirement. When the sample collection assembly 1 moves to the corresponding position, the sample collection assembly 1 can adjust its height so that the stored components thereof are distributed at different depths of the river water, and then the river water at the corresponding depth is collected and the samples at different depths are independently stored.

[0024] As shown in Figures 1-3 , after the detection sample collection is completed, the sample collection assembly 1 is moved to be arranged on the river bank and close to the mounting rack 5, the connecting assembly 2 arranged on the mounting rack 5 is lowered to be connected with the sample storage component at a certain depth, and then the sample at the depth is pumped to the detection assembly 3 under the working condition of the liquid pump 4, so as to realize the cleaning of the detection cavity of the detection assembly 3 first, and then the sample at the depth is injected into the detection assembly 3 to complete the corresponding detection after a period of cleaning, such as the detection of the water temperature, pH, dissolved oxygen (DO), turbidity, conductivity, COD, ammonia nitrogen, etc.

[0025] As shown in Figures 1-3 , after the detection of the sample at the above-mentioned depth is completed, the connecting assembly 2 is adjusted to be connected with the sample storage component at another depth, and the sample at the depth is pumped to the detection assembly 3 under the working condition of the liquid pump 4 to complete the cleaning and parameter detection in sequence. The above-mentioned steps are repeated, so as to complete the detection of the river water quality at different positions and improve the representativeness of the detection data. When the river water quality is detected, the liquid pump pumps the river water sample to the detection assembly 3, and after the detection of the river water quality is completed, the sample liquid is discharged from the detection assembly 3, so as to avoid the influence of the long-time immersion of the detection sensor in the river water on the detection accuracy, and avoid the lack of representativeness of the monitoring data caused by fixed-point detection.

[0026] As shown in Figures 1-3As shown, in order to further reduce the influence of river water on the detection sensor, a cleaning liquid tank 6 can also be equipped on the side of the mounting frame 5. The inside of the cleaning liquid tank 6 stores clean water, and the pipe body vertically inserted into the cleaning liquid tank 6 is connected to the liquid pump 4 through an electromagnetic valve, that is, the clean water in the cleaning liquid tank 6 can be pumped to the detection assembly 3 under the working condition of the liquid pump 4, at this time, the channel for the sample liquid flow in the sample collection assembly 1 is blocked, and the cleaning of the detection assembly 3 can be completed. In addition, after the detection assembly 3 completes the detection of a sample at a certain depth, the chamber of the detection assembly 3 can be cleaned by clean water before detecting another sample at a certain depth.

[0027] In addition, a pipe can also be additionally provided between the connecting assembly 2 and the liquid pump 4, and after the sample liquid is completely output from the sample collection assembly 1, clean water can be pumped to the sample collection assembly 1 by the liquid pump 4 to realize the cleaning of the sample collection assembly 1, thereby reducing the influence on the detection of the next batch of samples.

[0028] As shown in Figure 4 , Figure 6 in order to drive the sample collection assembly 1 to move to the corresponding position and complete the collection and processing of river water at different depths, the sample collection assembly 1 includes a floating ring 11, a propeller 13 arranged outside the floating ring 11 and driving the floating ring 11 to move, a first liquid collection bin 14, a second liquid collection bin 15 and a third liquid collection bin 16 arranged adjacent to each other and located inside the floating ring 11, the top of the first liquid collection bin 14 is fixed relative to the floating ring 11, the second liquid collection bin 15 is located inside the first liquid collection bin 14, and the third liquid collection bin 16 is located inside the second liquid collection bin 15. Under the action of buoyancy, the floating ring 11 stably supports the first liquid collection bin 14, the second liquid collection bin 15 and the third liquid collection bin 16, and under the working condition of the propeller 13, the floating ring 11 drives the first liquid collection bin 14, the second liquid collection bin 15 and the third liquid collection bin 16 to move to the corresponding position. After moving to the corresponding position, the first liquid collection bin 14, the second liquid collection bin 15 and the third liquid collection bin 16 inject river water at different depths in turn, that is, the first liquid collection bin 14 injects river water at the axis, the second liquid collection bin 15 and the third liquid collection bin 16 are lowered by a certain depth, when the second liquid collection bin 15 injects river water at the corresponding depth, the third liquid collection bin 16 is lowered by a certain depth again, and then the third liquid collection bin 16 injects river water at the corresponding depth, thereby realizing the collection and processing of different river water.

[0029] As shown in Figure 8As shown, specifically, the first liquid sampling bin 14 is arranged as an open-bottom arc-shaped bin structure, a piston 143 is arranged on the inner side of the arc-shaped bin, and at least two liquid pipes are arranged on the top of the arc-shaped bin, and a first electromagnetic valve 141 is arranged on each liquid pipe, and the top of one of the liquid pipes is immersed in the river water. When the sample collection assembly 1 moves to a certain position, the first electromagnetic valve 141 at the top of the first liquid sampling bin 14 is unblocked, and then the river water enters the first liquid sampling bin 14 through the first electromagnetic valve 141, and the piston 143 is lowered. When the first electromagnetic valve 141 is closed, the river water stops flowing into the first liquid sampling bin 14, and the piston 143 is stably arranged at a certain position, thereby achieving sample collection.

[0030] As shown in FIG. 1, the sample collection assembly 1 comprises a first liquid sampling bin 14, a second liquid sampling bin 15, a third liquid sampling bin 16, a connecting assembly 2, and a detection assembly 3. Figure 9 As shown, during the process of injecting river water into the first liquid sampling bin 14, the second liquid sampling bin 15 is arranged on the same circle, and the upper and lower ends of the second liquid sampling bin 15 are respectively arranged on a top ring plate 152 and a bottom ring plate 154, the top ring plate 152 and the bottom ring plate 154 are in sliding contact with the first liquid sampling bin 14 and are arranged on a vertical rod 153. In addition, a bottom rod 144 is arranged below the piston 143, the bottom of the vertical rod 153 and the bottom rod 144 are connected through a connecting plate 151, and the connecting plate 151 is arranged below the arc-shaped bin. Therefore, during the process of injecting river water into the first liquid sampling bin 14, the piston drives the second liquid sampling bin 15 to descend until the liquid sampling of the first liquid sampling bin 14 is completed.

[0031] In order to control the descent of the third liquid sampling bin 16 during the process of injecting river water into the second liquid sampling bin 15, the structure of the second liquid sampling bin 15 and the third liquid sampling bin 16 is arranged in the same way as the structure of the first liquid sampling bin 14, and the connection mode of the second liquid sampling bin 15 and the third liquid sampling bin 16 is arranged in the same way as the connection mode of the second liquid sampling bin 15 and the first liquid sampling bin 14. Therefore, when the second liquid sampling bin 15 injects river water, the third liquid sampling bin 16 descends, and then the first electromagnetic valve 141 at the top of the third liquid sampling bin 16 is unblocked to collect river water at a corresponding depth.

[0032] After the first liquid sampling bin 14, the second liquid sampling bin 15, and the third liquid sampling bin 16 collect river water at respective depths, the sample collection assembly 1 moves to the river water, the connecting assembly 2 is first connected to the first electromagnetic valve 141 at the top of the first liquid sampling bin 14, and then the liquid in the first liquid sampling bin 14 is pumped to the detection assembly 3. During the process of outputting the liquid from the first liquid sampling bin 14, the piston 143 rises until the top of the second liquid sampling bin 15 is flush with the top of the first liquid sampling bin 14. After the detection of the liquid in the first liquid sampling bin 14 is completed, the connecting assembly 2 adjusts its state to be connected to the first electromagnetic valve 141 at the top of the second liquid sampling bin 15, and then the liquid is pumped to the detection assembly 3, and in this process, the piston 143 drives the third liquid sampling bin 16 to rise. Finally, the connecting assembly 2 is connected to the third liquid sampling bin 16, thereby sequentially detecting river water at different depths.

[0033] As shown in FIG. 1, the sample collection assembly 1 comprises a first liquid sampling bin 14, a second liquid sampling bin 15, a third liquid sampling bin 16, a connecting assembly 2, and a detection assembly 3.Figure 8 As shown, in order to limit the movement of the piston 143, a limiting frame 145 can be detachably installed at the bottom of the first liquid collection tank 14, the second liquid collection tank 15 and the third liquid collection tank 16. The limiting frame 145 is slidably mounted on the bottom rod 144, so that the movement of the piston 143 can be limited under the action of the limiting frame 145.

[0034] In addition, the sample collection component 1 also includes an electrical control box 12, which is equipped with power supply devices, control logic devices, signal input and output devices and other devices, and the electrical control box 12 is electrically connected to the solenoid valve, which can instruct the solenoid valve to work when the electrical control box 12 is working, thereby facilitating the first liquid collection tank 14, the second liquid collection tank 15 and the third liquid collection tank 16 to collect river water of different depths.

[0035] like Figure 5 As shown, in order to stably mount the propeller 13 and the electrical control box 12 on the float 11, a support housing 111 is fitted above the float 11. A plurality of limiting arc plates 112 are hingedly mounted on the inner edge of the lower portion of the support housing 111. The limiting arc plates 112 are fitted below the float 11, and their ends are detachably connected to the support housing 111. A support plate is fixedly mounted on the side of the limiting housing 111. The electrical control box 12 and propeller 13 are located on the upper and lower sides of the support plate, respectively. A steering gear 131 is installed between the propeller 13 and the support plate to adjust their orientation. Furthermore, the propeller 13 and steering gear 131 are both electrically connected to the electrical control box 12, allowing the propeller 13 and steering gear 131 to be controlled to drive the float 11 to a certain position.

[0036] like Figure 6 、 Figure 7 As shown, a connecting ring plate 17 is detachably mounted on the outside of the top of the first liquid collection bin 14. An ear plate 172 is fixedly mounted on the inside of the connecting ring plate 17. The top of the ear plate 172 is open. A stud 142 is fixedly mounted on the top of the first liquid collection bin 14. A nut is sleeved on the stud 142. When the nut is rotated, the first liquid collection bin 14 is stably mounted within the connecting ring plate 17. The connection method between the second liquid collection bin 15 and the top and bottom ring plates 152 and 154 is similar to the connection method between the first liquid collection bin 14 and the connecting ring plate 17.

[0037] like Figure 7 As shown, a supporting arc plate 171 is fixedly installed above the connecting ring plate 17. The supporting arc plate 171 is fitted above the supporting shell 111, and a screw installed on the top of the supporting shell 111 passes through the supporting arc plate 171, and a nut is sleeved on the top of the screw, so that the connecting ring plate 17 can be controlled to be stably installed on the inner side of the supporting shell 111.

[0038] like Figure 10As shown, in order to realize the lifting setting of the connecting assembly 2, the connecting assembly 2 comprises a lifting plate 21 which is sleeved on the end of the three embedded rods 51 of the mounting frame 5 and is provided with a triangular structure, and a threaded sleeve is provided in the middle of the triangular structure, and a lead screw 52 is provided through the threaded sleeve, the end of the lead screw 52 is connected with the power output shaft of a third motor 53, and the third motor 53 is connected with the mounting frame 5. That is, the lifting plate 21 can be controlled to lift under the working condition of the third motor 52, thereby adjusting the height of the connecting assembly 2.

[0039] As shown in Figure 11 , Figure 12 , the connecting assembly 2 further comprises a connecting frame 26 and an adapter pipe 22. The adapter pipe 22 is installed at the end of the connecting frame 26, and the number of the adapter pipe 22 is equal to the number of the first liquid collecting bin 14, the second liquid collecting bin 15 and the third liquid collecting bin 16. That is, when the first liquid collecting bin 14, the second liquid collecting bin 15 and the third liquid collecting bin 16 are each provided with two, the adapter pipe 22 is also provided with two. Therefore, the first liquid collecting bin 14, the second liquid collecting bin 15 and the third liquid collecting bin 16 are distributed inside and outside, and the adapter pipe 22 needs to be adjusted in position to be connected with the liquid pipes at the top of the first liquid collecting bin 14, the second liquid collecting bin 15 and the third liquid collecting bin 16 in turn. Therefore, the connecting frame 26 is provided with an adjustable length structure. In addition, in order to connect the adapter pipe 22 with the first liquid collecting bin 14, the second liquid collecting bin 15 and the third liquid collecting bin 16 which are distributed in error in turn, the connecting frame 26 needs to be hingedly arranged below the end of the lifting plate 21, so as to control the connecting frame 26 to drive the adapter pipe 22 to rotate around the shaft, so that the adapter pipe 22 is opposite to the first liquid collecting bin 14, the second liquid collecting bin 15 and the third liquid collecting bin 16.

[0040] As shown in Figure 12 , Figure 13 , specifically, the connecting frame 26 comprises a middle pipe 264 and two insertion plates 265 which are respectively inserted into the two ends of the middle pipe 264, and a rotating shaft 261 is arranged on the side of the middle pipe 264, the two ends of the rotating shaft 261 which have opposite threaded structures 262 are respectively threaded through the insertion plates 265, and the rotating shaft 261 is controlled to rotate by a second motor 263. That is, the rotating shaft 261 and the second motor 263 are connected through a sprocket and a chain (not shown in the structure diagram), so that the two insertion plates 265 can be forced to move close to or away from each other under the condition that the rotating shaft 261 is controlled to rotate by the second motor 263. Therefore, the two adapter pipes 22 are respectively arranged through the two clamps 266 which are away from each other at the ends of the two insertion plates 265, so that the adapter pipes 22 move synchronously under the movement of the insertion plates 265, thereby adapting to the liquid collecting bins with different distances.

[0041] As shown in Figure 12As shown, in addition, the convex shaft fixed on the upper middle part of the intermediate pipe 264 is connected into the lifting plate 21 through a bearing, and the first motor 25 installed on the side edge of the lifting plate 21 is connected with the convex shaft through a gear, that is, a gear is coaxially fixed on each of the first motor 25 and the convex shaft, the two gears are connected in meshing, and the first motor 25 can control the rotation of the connecting frame 26 around the shaft to adjust the orientation of the two adapter pipes 22 so as to be opposite to the first liquid collection tank 14, the second liquid collection tank 15 and the third liquid collection tank 16 placed at different positions.

[0042] As shown in the figure, Figure 14 In order to control the stable sealing connection of the adapter pipe 22 and the liquid pipe on the top of the liquid collection tank, the bottom of the adapter pipe 22 is provided with a fastening mechanism 23, and the bottom of the adapter pipe 22 is matched with the top of the liquid pipe, so that after the bottom of the adapter pipe 22 is opposite to the top of the liquid pipe, the fastening mechanism 23 works to realize the sealing connection of the adapter pipe 22 and the liquid pipe. In addition, an industrial camera 24 is also arranged on the side edge of the lifting plate 21, which monitors the position of the liquid pipe and the adapter pipe 22 in real time to provide a reference for the action of the fastening mechanism 23.

[0043] As shown in the figure, Figure 14 Specifically, the fastening mechanism 23 includes a lifting ring plate 231, two buckle plates 233 below the lifting ring plate 231 and a inclined connecting frame 232 hingedly connecting the lifting ring plate 231 and the buckle plate 233, the lifting ring plate 231 is sleeved on the adapter pipe 22, the top of the buckle plate 233 is sleeved on the guide rod 235 of the adapter pipe 22, and the threaded column 236 threaded through the lifting ring plate 231 is connected with the power output shaft of the fourth motor 234; the inner space of the two buckle plates 233 is provided with a trapezoidal structure, and the larger end of the two buckle plates 233 is sleeved on the adapter pipe 22 and the liquid pipe first. When the adapter pipe 22 and the liquid pipe are opposite, the fourth motor 234 controls the rotation of the threaded column 236 to force the lifting of the lifting ring plate 231, drive the buckle plates 233 to approach each other, and use the structural characteristics of the buckle plates 233 to stably connect the adapter pipe 22 and the liquid pipe.

[0044] In order to meet the extraction of river water in the liquid collection bin to the detection assembly 3, and the clean water in the cleaning liquid barrel 6 is transported into the liquid collection bin, the adapter pipe 22 is provided as a three-way structure, and the second electromagnetic valve 221 and the third electromagnetic valve 222 are respectively installed at the two ends of the top of the adapter pipe 22, and one end of the adapter pipe 22 is connected with the inlet end of the liquid pump 4 through the second electromagnetic valve 221, and the other end is connected with the output end of the liquid pump 4 through the third electromagnetic valve 222. Moreover, because the cleaning liquid barrel 6, the adapter pipe 22 and the inlet end of the liquid pump 4 are connected, the detection assembly 3, the adapter pipe 22 and the output end of the liquid pump 4 are connected, in order to avoid mutual interference, at least two electromagnetic valves are provided on the pipe body of the inlet and outlet ends of the liquid pump 4, and the two electromagnetic valves of the output end are respectively connected with the detection assembly 3 and the adapter pipe 22, and the two electromagnetic valves of the input end are respectively connected with the cleaning liquid barrel 6 and the adapter pipe 22.

[0045] As shown in Figure 15 In order to temporarily store the river water to be detected, the detection assembly 3 includes a bottom bin 31 with an open top, and at least two inlet and outlet pipes 37 are installed at the bottom of the bottom bin 31, and an electromagnetic valve is installed on each inlet and outlet pipe 37, one of which is connected with the output end of the liquid pump 4, so that the river water pumped by the liquid pump 4 is transported into the bottom bin 31.

[0046] As shown in Figure 15 In addition, an isolation plate 32 is installed at the top of the bottom bin 31, and a plurality of sensors 35 are provided through the isolation plate 32, and the types and functions of the sensors 35 are determined according to actual needs, such as water temperature sensor, pH sensor, dissolved oxygen sensor, turbidity sensor, conductivity sensor, COD sensor, ammonia nitrogen sensor, liquid level sensor, etc. The bottom of the sensor 35 extends into the bottom bin 31.

[0047] As shown in Figure 15 In addition, a top bin 33 is provided above the isolation plate 32, a control system 34 is provided on the inner side of the top bin 33, and the control system 34 at least includes a data preprocessing module, an intelligent analysis module and a warning module; in addition, an electrical control box is also required, or the power supply devices, control logic devices and signal input and output devices provided by the electrical control box are integrated at the control system 34.

[0048] Data preprocessing module: filtering (removing pulse interference) of original data, temperature compensation (such as DO data correction to 25℃ standard value) and abnormal value identification (based on 3σ criterion).

[0049] Intelligent analysis module: time series analysis of multi-parameter data through LSTM neural network model, establishment of water quality index correlation model (such as coupling relationship of COD and turbidity, ammonia nitrogen), realization of pollution tracing (such as matching of industrial wastewater characteristic parameters).

[0050] Early warning module: set multi-level threshold (such as DO < 5 mg / L for early warning, < 3 mg / L for secondary warning), through SMS, APP push early warning information, and link GIS system to show pollution diffusion trend.

[0051] The device is connected to the mains or is provided with a photovoltaic power supply system. The power supply lead connected to the electrical control box 12 of the sample collection assembly 1 can be wound through a slip ring integrated industrial cable reel, so that the power supply cable can be neatly stored without affecting the movement of the sample collection assembly 1.

[0052] The above is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A river water quality detection device for environmental monitoring, characterized in that: The invention comprises a sample collection component (1) which is adjustable in position and floats on the river surface. The height of the sample collection component (1) is adjustable to collect river water samples at different depths and store them independently. A mounting frame (5) is buried at the river bank. A detection component (3) is arranged on the top of the mounting frame (5). A connecting component (2) is arranged on the side of the mounting frame (5) for lifting. A liquid pump (4) is installed between the connecting component (2) and the detection component (3). The connecting component (2) is connected to the sample collection component (1) by adjustment. The liquid pump (4) sequentially pumps samples at different points and delivers them to the detection component (3).

2. A river water quality detection device for environmental monitoring according to claim 1, characterized in that: The sample collection assembly (1) comprises a floating ring (11), a propeller (13) arranged outside the floating ring (11) and driving the floating ring to move, a first liquid collection chamber (14), a second liquid collection chamber (15) and a third liquid collection chamber (16) located inside the floating ring (11) and arranged to slide adjacent to each other, wherein the top of the first liquid collection chamber (14) is fixed relative to the floating ring (11), the second liquid collection chamber (15) is located inside the first liquid collection chamber (14), and the third liquid collection chamber (16) is located inside the second liquid collection chamber (15).

3. A river water quality detection device for environmental monitoring according to claim 2, characterized in that: A support shell (111) is fitted above the floating ring (11), and a plurality of limiting arc plates (112) are hingedly provided at the inner edge below the supporting shell (111). The limiting arc plates (112) are fitted below the floating ring (11) and their ends are detachably connected to the supporting shell (111).

4. A river water quality detection device for environmental monitoring according to claim 3, characterized in that: A steering gear (131) for adjusting the direction of the propeller (13) is installed above the propeller (13), and a support plate above the steering gear (131) is fixedly connected to the support housing (111); an electrical control box (12) is installed above the support plate, and the electrical control box (12) is electrically connected to the propeller (13) and the steering gear (131).

5. A river water quality detection device for environmental monitoring according to claim 3, characterized in that: The first liquid collection tank (14), the second liquid collection tank (15) and the third liquid collection tank (16) are all configured as arc-shaped tank structures with an open bottom, a piston (143) is provided on the inner side of the arc-shaped tank, and at least two liquid pipes are provided at the top of the arc-shaped tank in communication with each other, a first solenoid valve (141) is provided on each liquid pipe, and the top of one of the liquid pipes is submerged in river water.

6. A river water quality detection device for environmental monitoring according to claim 5, characterized in that: A bottom rod (144) is fixedly arranged below the piston (143), and a limiting frame (145) is slidably sleeved on the bottom rod (144) and detachably mounted on the bottom of the arc-shaped bin; the upper and lower ends of the inner arc-shaped bin located on the same circle are respectively mounted on a top ring plate (152) and a bottom ring plate (154); the top ring plate (152) and the bottom ring plate (154) are in sliding contact with the outer arc-shaped bin and are both mounted on a vertical rod (153); and the bottoms of the vertical rod (153) and the bottom rod (144) are connected by a connecting plate (151), and the connecting plate (151) is located below the arc-shaped bin; when river water is injected into the outer arc-shaped bin, the piston (143) drives the inner arc-shaped bin to descend.

7. A river water quality detection device for environmental monitoring according to claim 3, characterized in that: A connecting ring plate (17) is detachably mounted on the outer side of the top of the first liquid collection bin (14), and a supporting arc plate (171) is fixedly mounted above the connecting ring plate (17), and the supporting arc plate (171) is fitted above the supporting shell (111).

8. A river water quality detection device for environmental monitoring according to claim 5, characterized in that: The connecting assembly (2) comprises a lifting plate (21), a connecting frame (26) hingedly arranged below the end of the lifting plate (21), and a transfer pipe (22) respectively installed at both ends of the connecting frame (26); the transfer pipe (22) is arranged as a three-way structure, and a second solenoid valve (221) and a third solenoid valve (222) are respectively installed at both ends of the top of the transfer pipe (22); the connecting frame (26) comprises an intermediate pipe (264) and two plug-in plates (265) respectively inserted into the two ends of the intermediate pipe (264); a rotating shaft (261) is rotatably arranged on the side of the intermediate pipe (264), and the rotating shaft (261) has two ends of opposite thread structures (262) that are respectively threaded through the plug-in plates ( 265) is provided, and the rotating shaft (261) is controlled to rotate by the second motor (263); the convex shaft fixed above the middle of the intermediate tube (264) is inserted into the lifting plate (21) through a bearing connection, and the first motor (25) installed on the side of the lifting plate (21) is connected to the convex shaft through a gear; two transfer tubes (22) respectively penetrate the two plug-in plates (265) and are provided with a clamp (266) at one end away from each other; the end of the lifting plate (21) is slidably sleeved on the mounting frame (5), and the end of the lifting plate (21) is threadedly sleeved with a screw (52), the end of the screw (52) is connected to the power output shaft of the third motor (53), and the third motor (53) is connected to the mounting frame (5).

9. A river water quality detection device for environmental monitoring according to claim 8, characterized in that: The bottom of the transfer tube (22) is provided with a fastening mechanism (23), and the bottom of the transfer tube (22) is adapted to the top of the liquid pipe, and the fastening mechanism (23) seals and connects the transfer tube (22) and the liquid pipe; the fastening mechanism (23) comprises a lifting ring plate (231), two buckle plates (233) located below the lifting ring plate (231), and an oblique connecting frame (232) hingedly connecting the lifting ring plate (231) and the buckle plates (233). The ring plate (231) is sleeved on the transfer tube (22), the top of the buckle plate (233) is sleeved on the guide rod (235) of the transfer tube (22), and the threaded column (236) provided with the lifting ring plate (231) is connected to the power output shaft of the fourth motor (234); the inner space of the two buckle plates (233) is provided with a trapezoidal structure, and the larger end of the two buckle plates (233) is first sleeved on the transfer tube (22) and the liquid pipe.

10. The river water quality detection device for environmental monitoring according to claim 8, characterized in that: The detection assembly (3) comprises a bottom bin (31) with an opening at the top, a top bin (33) with an opening at the bottom, and an isolation plate (32) installed between the bottom bin (31) and the top bin (33); a control system (34) is provided on the inner side of the top bin (33); a plurality of sensors (35) are provided through the isolation plate (32), and the bottoms of the sensors (35) extend into the bottom bin (31); inlet and outlet pipes (37) are provided at the bottom of the bottom bin (31), one of the inlet and outlet pipes (37) is connected to the output end of the liquid pump (4), and the input end of the liquid pump (4) is connected to the end of the transfer pipe (22); a sleeve (36) installed below the bottom bin (31) is detachably installed on the top of the mounting frame (5).

Images