Water quality online monitoring device and monitoring method

Abstract

The present invention discloses an online water quality monitoring device, relating to the technical field of water quality monitoring devices. The device comprises a sampling device and a monitoring and analysis module. The sampling device comprises a collection component and a sampling component. The sampling component comprises a sampling pipeline, a sampling tube head, and a cleaning unit. The cleaning unit comprises a water pumping structure, a water guide support structure, a self-rotating structure, and a spray cleaning structure. The monitoring and analysis module comprises an automatic detection module and an optical analysis module. The sampling pipeline is used to extract fluid from the sampling tube head and transport it to the collection component. The automatic detection module is used to simultaneously detect the contents of multiple substances in the fluid within the collection component and obtain multiple detection feedbacks. The optical analysis module is used to collect the multiple detection feedbacks and obtain detection results through analysis and judgment. A method for online water quality monitoring is also disclosed. The present invention has the advantages of good monitoring effect, high monitoring efficiency, and reliable use.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to an online water quality monitoring device and a monitoring method. Background Art

[0002] Water quality monitoring is the process of monitoring and measuring the types, concentrations, and changing trends of pollutants in water bodies to evaluate water quality. The monitoring scope is very broad, encompassing both unpolluted and polluted natural waters (rivers, lakes, oceans, and groundwater) as well as various industrial wastewaters. Key monitoring items can be divided into two categories: one is comprehensive indicators reflecting water quality, such as temperature, color, turbidity, pH, conductivity, suspended solids, dissolved oxygen, chemical oxygen demand (COD), and biochemical oxygen demand (BOD); the other is the presence of toxic substances, such as phenol, cyanide, arsenic, lead, chromium, cadmium, mercury, and organic pesticides. In addition to the aforementioned monitoring items, flow velocity and flow measurement are sometimes necessary to objectively assess the quality of river and ocean water. During the water quality monitoring process, the online water quality monitoring equipment extracts the monitoring reagents through a combination of a pump and a multi-way valve to complete dynamic quality control and spike recovery. However, the end of the extraction pipeline is easily contaminated by algae, mud or other floating particles in the water, which leads to blockage of the extraction pipeline, low extraction efficiency and poor effect. In addition, in the later stage of use, there will be problems such as corrosion, leakage and bubbles at the end and body of the extraction pipeline, which further affects the online monitoring of water quality. Summary of the Invention

[0003] In view of the defects in the prior art, the present invention provides an online water quality monitoring device and a monitoring method, which greatly improves the detection effect and detection efficiency.

[0004] A water quality online monitoring device includes a sampling device and a monitoring and analysis module, wherein the sampling device includes a collection component and a sampling component connected to each other, the sampling component includes a sampling pipeline, a sampling tube head and a cleaning part, the cleaning part includes a pumping structure, a water guide support structure, a self-rotation structure and a spray washing structure, and the monitoring and analysis module includes an automatic detection module and an optical analysis module; wherein the sampling tube head is sleeved on the end of the sampling pipeline, and a plurality of openings are opened on the outer wall of the sampling tube head, the openings are used to allow fluid to enter the interior of the sampling tube head, and the sampling pipeline is used to extract the fluid inside the sampling tube head and transport it to the collection component; the water guide support structure The pumping structure is connected, and the spraying structure is connected to the water-conducting support structure and faces the outer wall of the sampling tube head. The pumping structure is used to extract fluid into the water-conducting support structure so that the fluid is sprayed from the spraying structure to the outer wall of the sampling tube head. The rotation structure is connected to the water-conducting support structure, and the rotation structure is used to be pushed by the flowing fluid and drive the water-conducting support structure to rotate. The water-conducting support structure is used to rotate the spraying structure around the center line of the sampling tube head after rotation; the automatic detection module is used to simultaneously detect the content of multiple substances in the fluid inside the collection component and obtain multiple detection feedbacks, and the optical analysis module is used to collect multiple detection feedbacks and obtain detection results through analysis and judgment. The entire online monitoring equipment has a sampling system, a pretreatment system, a data acquisition and control system, an online monitoring and analysis instrument, a data processing and transmission system, and a remote data management center. When in use, the sampling device is placed in the water area to be monitored. It can detect various indicators of the water inside the water area to be detected and send the test values ​​to the control system. The control system realizes automatic alarm, display, adjustment, control of related equipment and other functions. At the same time, it is also equipped with automatic control technology, computer technology and professional software to form a complete equipment from sampling, pretreatment, analysis to data processing and storage, thereby realizing online automatic monitoring of samples.

[0005] Preferably, the pumping structure includes a base, a water pump and an intermediate pipeline; wherein the base includes a top plate and a bottom plate arranged opposite each other, the water pump is arranged between the top plate and the bottom plate, the water guide support structure is arranged on the top plate, one end of the intermediate pipeline is connected to the water pump, and the other end of the intermediate pipeline passes through the top plate and is connected to the water guide support structure; a water inlet is provided at the bottom of the water pump, and a filter ring is provided on the water inlet. The base of the pumping structure has a certain weight to ensure that the entire sampling device is submerged in water. The top plate and the bottom plate constitute the installation structure of the entire sampling device, wherein the water pump and the intermediate pipeline are arranged between the top plate and the bottom plate, and the water guide support structure, the self-rotating structure and the spraying structure are all arranged above the top plate. After the water pump is started, the fluid around the water inlet passes through the filter ring and the water pump in turn, and enters the water guide support structure under the distribution of the intermediate pipeline.

[0006] Preferably, the water-conducting support structure includes: a connecting column arranged in the center of the top plate; a pipe rack arranged on the outer wall of the connecting column; and a first retaining ring arranged on the top of the pipe rack; wherein the pipe rack includes a horizontal portion and a vertical portion, the horizontal portion extends horizontally outward from the outer wall of the connecting column, and the vertical portion extends vertically upward from the end of the horizontal portion, the first retaining ring is fixed on the top of the vertical portion, and the first retaining ring is surrounded by the sampling tube head; the connecting column, horizontal portion and vertical portion are hollow and connected in sequence, the connecting column is connected to the intermediate pipeline, and the spray structure is provided on the vertical portion. The connecting column is connected to the intermediate pipeline. After the water pump is started, the fluid located around the water inlet flows through the filter ring, the water pump, the intermediate pipeline and the connecting column in sequence, and enters the horizontal part and the vertical part after passing through the connecting column, and finally enters the spray structure at the vertical part, so that the fluid is sprayed out of the spray structure; further, the vertical part extends vertically upward, which enables the spray structure to fully clean a certain side of the outer wall of the sampling tube head vertically. Under the action of the self-rotating structure, the entire sampling tube head can be fully cleaned; further, the pipe rack can be arranged in multiple, and a first retaining ring is commonly provided on the multiple pipe racks. The first retaining ring is arranged around the sampling tube head. When the pipe rack is impacted, the first retaining ring can limit the offset of the water guide support structure to prevent it from being damaged due to excessive deformation, and can also compensate for the offset of the pipe rack to a certain extent, thereby improving the shock absorption capacity.

[0007] Preferably, the connecting post is provided with a reinforcement portion, comprising a second retaining ring surrounding the sampling tube head, the second retaining ring being connected to a connecting rod fixed to the connecting post. Similarly, the second retaining ring on the reinforcement portion is provided around the sampling tube head. When the entire water guide support structure is subjected to an impact, the second retaining ring can limit the deflection of the water guide support structure, preventing excessive deformation and damage. It can also compensate for any deflection of the water guide support structure, further enhancing shock absorption capabilities.

[0008] Preferably, the spray cleaning structure includes multiple nozzles facing the outer wall of the sampling tube head, and the multiple nozzles are arranged sequentially from top to bottom on the vertical portion, and the nozzles are connected to the interior of the vertical portion. The nozzles are used to spray the fluid inside the vertical portion. The multiple nozzles can improve the cleaning efficiency of the sampling tube head.

[0009] Preferably, the self-rotating structure includes: a retaining plate wound around the connecting column; and a plurality of fan blades arranged at the bottom of the retaining plate; wherein the plurality of fan blades are evenly distributed on the bottom surface of the retaining plate in a circumferential direction, and the fan blades are used to drive the retaining plate to rotate around the center line of the connecting column after being pushed by the flowing fluid. The circulating fluid will give the fan blades a certain thrust, causing the fan blades to move around the center line of the connecting column, thereby causing the retaining plate to rotate around the center line of the connecting column. Since the retaining plate is wound around the connecting column, the entire connecting column will eventually rotate, thereby causing the pipe rack fixed to the connecting column to move, and then causing the spray structure arranged on the pipe rack to rotate around the center line of the connecting column. When the spray structure rotates around the center line of the connecting column, the spray structure will move around the outer wall of the sampling tube head, thereby ensuring that the spray structure can clean the entire outer wall of the sampling tube head.

[0010] Preferably, a protective layer is provided between the top and bottom panels, the protective layer being disposed around the water pump and having filter holes formed therein. The top, bottom, and protective layers together form a mounting cavity, and the water pump is disposed within the mounting cavity, thereby allowing the fluid drawn in by the water pump to undergo two levels of filtration: the first level being filtered through the filter holes, and the second level being filtered through the filter ring.

[0011] Preferably, the automatic detection module includes a reaction unit, a lifting unit, and a replacement unit; wherein the reaction unit is provided with a detachable reaction head, and a plurality of test strips are provided on the reaction head, and different test strips are used to react with different compounds to obtain different types of detection feedback; the lifting unit is used to drive the reaction unit to extend into or out of the collection component, so that the test strips contact and react with the fluid inside the collection component and are removed from the collection component after the contact reaction; the replacement unit is used to replace the reaction head of the reaction unit. When performing the detection operation, the lifting unit drives the reaction unit to extend into the collection component, at which time the reaction head is submerged in the fluid inside the collection component, allowing different test strips to fully react with different compounds, thereby obtaining different types of detection feedback. After a certain period of time, the lifting unit is then used to drive the reaction unit out of the collection component. At this time, the detection feedback is analyzed and judged by the optical analysis module to obtain the detection result. Furthermore, after the detection result is obtained, the reaction head is directly replaced by the replacement unit.

[0012] Preferably, the optical analysis module includes multiple optical probes and a processing unit. The multiple optical probes are used to collect test feedback from multiple test strips after the reaction unit is removed from the collection assembly and obtain feedback information. The processing unit is used to process the feedback information and obtain test results. The multiple optical probes are directed directly at the test strips after the reaction, and optically collect feedback information corresponding to the test feedback. The processing unit then processes the feedback information and obtains the test results.

[0013] A method for online water quality monitoring is also provided, comprising: S1, placing a sampling device in the water area to be monitored; S2, starting a water pump, and after a first preset time period, shutting down the water pump, extracting fluid from the sampling tube head through a sampling pipeline and delivering it to a collection assembly, and stopping extraction after a second preset time period; S3, starting a lifting assembly, allowing the lifting assembly to drive a reaction unit into the collection assembly by a preset distance, and shutting down the lifting assembly. After a third preset time period, starting the lifting assembly, allowing the lifting assembly to move the reaction unit out of the collection assembly, and starting multiple optical probes, wherein the multiple optical probes collect detection feedback from multiple detection strips on the reaction unit and obtain feedback information, a processing unit processes the feedback information and obtains detection results, and a replacement unit replaces the reaction head on the reaction unit; S4, continuing S2. The first preset time period, the second preset time period, and the third preset time period are all freely set according to monitoring requirements.

[0014] The beneficial effects of the present invention are embodied in:

[0015] In the present invention, during the monitoring operation, the internal fluid of the sampling tube head is first extracted through the sampling pipeline and transported to the collecting component, and then detected and analyzed by the automatic detection module and the optical analysis module. Among them, when the sampling pipeline extracts the internal fluid of the sampling tube head, the internal fluid of the sampling tube head will decrease rapidly, resulting in a large amount of fluid outside the sampling tube head entering the interior of the sampling tube head along the through port. In this way, a large amount of algae, mud or other floating particles in the fluid will quickly block the through port of the sampling tube head. At this time, by starting the water pumping structure, the water pumping structure extracts the surrounding fluid into the water guide support structure, and allows the fluid to be sprayed from the spraying structure to the outer wall of the sampling tube head, so that the high-pressure water flow sprayed from the spraying structure directly cleans the impurities around the through port, preventing the impurity particles from clogging the through port. On the basis of filtering foreign matter and impurities into the sampling pipeline through the sampling tube head, the clogging problem of the sampling tube head is effectively avoided, the extraction efficiency is effectively guaranteed, the extraction effect is improved, and the monitoring effect is improved. At the same time, after a certain period of use, it can The entire sampling device is directly lifted from the water area to be monitored, and then the sampling tube head is quickly cleaned through the pumping structure, the water guide support structure and the spray structure, which greatly improves the maintenance efficiency and prevents the corrosion, leakage and bubble existence of the end and body of the extraction pipeline in the later stage. Furthermore, the flowing fluid can directly drive the rotation structure to rotate, and the rotation of the self-rotating structure drives the water guide support structure to rotate, so that the spray structure rotates around the center line of the entire sampling tube head, thereby realizing the spray structure to clean the outer wall of the entire sampling tube head, improving the cleaning effect of the sampling tube head without consuming energy, and thus indirectly improving the extraction efficiency and extraction effect. Furthermore, the automatic detection module detects the content of multiple substances in the fluid inside the collection component and obtains multiple detection feedbacks, thereby realizing simultaneous detection of multiple items, with a high degree of automation, avoiding excessive repeated detection, and improving detection efficiency. In addition, the optical analysis module can automatically analyze and judge the detection feedback and obtain the detection results, thereby improving the scientificity and accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0017] Figure 1 A structural perspective diagram of the sampling assembly of the present invention;

[0018] Figure 2 It is a front view of a partial structure of the sampling assembly of the present invention;

[0019] Figure 3 A side view of a portion of the structure of the sampling assembly of the present invention;

[0020] Figure 4 It is a schematic diagram of the composition of the present invention;

[0021] Figure 5 Schematic diagram of the composition of the automatic detection module of the present invention;

[0022] Figure 6 Schematic diagram of the composition of the optical analysis module of the present invention.

[0023] Reference numerals:

[0024] 1-Sampling device, 2-Monitoring and analysis module, 21-Automatic detection module, 211-Reaction unit, 212-Lifting unit, 213-Replacement unit, 22-Optical analysis module, 221-Optical probe, 222-Processing unit, 3-Collection component, 4-Sampling component, 41-Sampling pipeline, 42-Sampling tube head, 43-Cleaning unit, 431-Pumping structure, 4311-Base, 4311a-Top plate, 4311b-Bottom plate, 4311c-Protective layer , 4312-water pump, 4312a-filter ring, 4313-intermediate pipeline, 432-water guide support structure, 4321-connecting column, 4322-pipe rack, 4322a-horizontal part, 4322b-vertical part, 4323-first retaining ring, 4324-reinforcement part, 4324a-second retaining ring, 4324b-connecting rod, 433-rotation structure, 4331-retaining plate, 4332-fan blade paddle, 434-spraying structure, 4341-nozzle. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0028] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0029] like Figures 1 to 6 As shown, a water quality online monitoring device includes a sampling device 1 and a monitoring and analysis module 2. The sampling device 1 includes a collecting component 3 and a sampling component 4 that are connected to each other. The sampling component 4 includes a sampling pipeline 41, a sampling tube head 42 and a cleaning part 43. The cleaning part 43 includes a pumping structure 431, a water guide support structure 432, a rotation structure 433 and a spray structure 434. The monitoring and analysis module 2 includes an automatic detection module 21 and an optical analysis module 22; wherein, the sampling tube head 42 is sleeved on the end of the sampling pipeline 41, and a plurality of through holes are opened on the outer wall of the sampling tube head 42. The through holes are used to allow fluid to enter the interior of the sampling tube head 42, and the sampling pipeline 41 is used to extract the fluid inside the sampling tube head 42 and transport it to the collecting component 3; the water guide support structure 432 is connected to the pumping structure 431. Structure 431, the spray structure 434 is connected to the water-guiding support structure 432 and is opposite to the outer wall of the sampling tube head 42. The pumping structure 431 is used to extract the fluid into the water-guiding support structure 432 so that the fluid is sprayed from the spray structure 434 to the outer wall of the sampling tube head 42. The rotation structure 433 is connected to the water-guiding support structure 432. The rotation structure 433 is used to be pushed by the flowing fluid and drive the water-guiding support structure 432 to rotate. The water-guiding support structure 432 is used to rotate the spray structure 434 around the center line of the sampling tube head 42 after rotation; the automatic detection module 21 is used to simultaneously detect the content of multiple substances in the fluid inside the collection component 3 and obtain multiple detection feedbacks, and the optical analysis module 22 is used to collect multiple detection feedbacks and obtain detection results through analysis and judgment.

[0030] In this embodiment, it should be noted that the entire online monitoring equipment has a sampling system, a pretreatment system, a data acquisition and control system, an online monitoring and analysis instrument, a data processing and transmission system and a remote data management center. When in use, the sampling device 1 is placed in the water area to be monitored, and can detect various indicators of the water inside the water area to be detected and send the detection values ​​to the control system. The control system realizes automatic alarm, display, adjustment, control of related equipment and other functions. At the same time, it is also equipped with automatic control technology, computer technology and professional software to form a complete equipment from sampling, pretreatment, analysis to data processing and storage, thereby realizing online automatic monitoring of samples. In particular, during the monitoring operation, the internal fluid of the sampling tube head 42 is first extracted through the sampling pipeline 41 and transported to the collection component 3, and then detected and analyzed by the automatic detection module 21 and the optical analysis module 22. When the sampling pipeline 41 extracts the internal fluid of the sampling tube head 42, the internal fluid of the sampling tube head 42 will decrease rapidly, causing a large amount of fluid outside the sampling tube head 42 to enter the interior of the sampling tube head 42 along the opening. In this way, a large amount of algae, mud or other floating particles in the fluid will quickly block the opening of the sampling tube head 42. At this time, by starting The pumping structure 431 is driven to extract the surrounding fluid into the water guide support structure 432, and the fluid is sprayed from the spray structure 434 to the outer wall of the sampling tube head 42, so that the high-pressure water flow sprayed from the spray structure 434 directly cleans the impurities around the opening, preventing the impurity particles from clogging the opening, so that on the basis of filtering foreign matter and impurities into the sampling pipeline 41 through the sampling tube head 42, the clogging problem of the sampling tube head 42 is effectively avoided, the extraction efficiency is effectively guaranteed and the extraction effect is improved, thereby improving the monitoring effect; at the same time, after a certain period of use, The entire sampling device 1 can be directly lifted from the water area to be monitored, and then the sampling tube head 42 can be quickly cleaned through the pumping structure 431, the water guide support structure 432 and the spraying structure 434, which greatly improves the maintenance efficiency and prevents the corrosion, leakage and bubble problems of the end and body of the extraction pipeline in the later stage; further, the flowing fluid can directly drive the rotation structure 433 to rotate, and the rotation structure 433 drives the water guide support structure 432 to rotate, so that the spraying structure 434 rotates around the center line of the entire sampling tube head 42, thereby realizing the spraying structure 434 to The outer wall of the entire sampling tube head 42 is cleaned, which improves the cleaning effect of the sampling tube head 42 without consuming energy, thereby indirectly improving the extraction efficiency and extraction effect; further, the automatic detection module 21 detects the content of multiple substances in the fluid inside the collection component 3 and obtains multiple detection feedbacks, thereby realizing simultaneous detection of multiple items, with a high degree of automation, avoiding excessive repeated detection, and improving detection efficiency, and the optical analysis module 22 can automatically analyze and judge the detection feedback and obtain the detection results, thereby improving the scientificity and accuracy of the detection results.

[0031] Specifically, the pumping structure 431 includes a base 4311, a water pump 4312 and an intermediate pipeline 4313; wherein, the base 4311 includes a top plate and a bottom plate arranged opposite each other, the water pump 4312 is arranged between the top plate and the bottom plate, the water guide support structure 432 is arranged on the top plate, one end of the intermediate pipeline 4313 is connected to the water pump 4312, and the other end of the intermediate pipeline 4313 passes through the top plate and is connected to the water guide support structure 432; a water inlet is provided at the bottom of the water pump 4312, and a filter ring is provided on the water inlet.

[0032] In this embodiment, it should be noted that the base 4311 of the pumping structure 431 has a certain weight to ensure that the entire sampling device 1 is submerged in water. The top and bottom plates form the installation structure of the entire sampling device 1, wherein the pumping pump 4312 and the intermediate pipeline 4313 are arranged between the top and bottom plates, and the water-guiding support structure 432, the self-rotating structure 433, and the spraying structure 434 are all arranged above the top plate. After the pumping pump 4312 is started, the fluid located around the water inlet sequentially passes through the filter ring and the pumping pump 4312, and enters the water-guiding support structure 432 under the distribution of the intermediate pipeline 4313.

[0033] Specifically, the water-conducting support structure 432 includes: a connecting column 4321 arranged in the center of the top plate; a pipe rack 4322 arranged on the outer wall of the connecting column 4321; and a first retaining ring 4323 arranged on the top of the pipe rack 4322; wherein, the pipe rack 4322 includes a horizontal portion and a vertical portion, the horizontal portion extends horizontally outward from the outer wall of the connecting column 4321, and the vertical portion extends vertically upward from the end of the horizontal portion, the first retaining ring 4323 is fixed on the top of the vertical portion, and the first retaining ring 4323 is surrounded by the sampling tube head 42; the connecting column 4321, the horizontal portion and the vertical portion are hollow and connected in sequence, the connecting column 4321 is connected to the intermediate pipeline 4313, and the spray structure 434 is provided on the vertical portion.

[0034] In this embodiment, it should be noted that the connecting column 4321 is connected to the intermediate pipeline 4313. After the water pump 4312 is started, the fluid located around the water inlet flows through the filter ring, the water pump 4312, the intermediate pipeline 4313 and the connecting column 4321 in sequence, and enters the horizontal part and the vertical part after passing through the connecting column 4321, and finally enters the spray structure 434 at the vertical part, so that the fluid is sprayed out of the spray structure 434; further, the vertical part extends vertically upward, which enables the spray structure 434 to fully spray one side of the outer wall of the sampling tube head 42 The cleaning is carried out vertically, and under the action of the self-rotating structure 433, the entire sampling tube head 42 can be fully cleaned; further, the pipe rack 4322 can be provided in plurality, and a first retaining ring 4323 is commonly provided on the plurality of pipe racks 4322. The first retaining ring 4323 is arranged around the sampling tube head 42. When the pipe rack 4322 is impacted, the first retaining ring 4323 can limit the offset of the water guide support structure 432 to prevent it from being damaged due to excessive deformation, and can also compensate for the offset of the pipe rack 4322 to improve the shock absorption capability.

[0035] Specifically, a reinforcement portion 4324 is provided on the connecting column 4321 . The reinforcement portion 4324 includes a second retaining ring surrounding the sampling tube head 42 . The second retaining ring is connected to a connecting rod fixed on the connecting column 4321 .

[0036] In this embodiment, it should be noted that, similarly, the second retaining ring on the reinforcing portion 4324 is arranged around the sampling tube head 42. When the entire water-conducting support structure 432 is impacted, the second retaining ring can limit the offset of the water-conducting support structure 432 to prevent it from being damaged due to excessive deformation. It can also compensate for the offset of the water-conducting support structure 432 to further improve the shock absorption capability.

[0037] Specifically, the spray structure 434 includes a plurality of nozzles 4341 facing the outer wall of the sampling tube head 42. The plurality of nozzles 4341 are sequentially arranged on the vertical portion from top to bottom, and the nozzles 4341 are connected to the interior of the vertical portion.

[0038] In this embodiment, it should be noted that the nozzle 4341 is used to spray out the fluid inside the vertical portion. Multiple nozzles 4341 can improve the cleaning efficiency of the sampling tube head 42.

[0039] Specifically, the rotation structure 433 includes: a retaining plate 4331 arranged around the connecting column 4321; and a plurality of fan blade paddles 4332 arranged at the bottom of the retaining plate 4331; wherein the plurality of fan blade paddles 4332 are evenly distributed on the bottom surface of the retaining plate 4331 in a circumferential direction, and the fan blade paddles 4332 are used to drive the retaining plate 4331 to rotate around the center line of the connecting column 4321 after being pushed by the flowing fluid.

[0040] In this embodiment, it should be noted that the circulating fluid will give the fan blade paddle 4332 a certain thrust, causing the fan blade paddle 4332 to move around the center line of the connecting column 4321, thereby allowing the retaining plate 4331 to rotate around the center line of the connecting column 4321. Since the retaining plate 4331 is arranged around the connecting column 4321, the entire connecting column 4321 will eventually rotate, thereby allowing the pipe rack 4322 fixed on the connecting column 4321 to move, and then allowing the spray structure 434 provided on the pipe rack 4322 to rotate around the center line of the connecting column 4321. When the spray structure 434 rotates around the center line of the connecting column 4321, the spray structure 434 will move around the outer wall of the sampling tube head 42, thereby ensuring that the spray structure 434 can clean the outer wall of the entire sampling tube head 42.

[0041] Specifically, a protective layer is provided between the top plate and the bottom plate, the protective layer is arranged around the water pump 4312, and filtering holes are opened on the protective layer.

[0042] In this embodiment, it should be noted that the top plate, the bottom plate and the protective layer together form an installation cavity, and the water pump 4312 is arranged in the installation cavity, so that the fluid sucked in by the water pump 4312 undergoes two layers of filtration, the first layer is filtered through the filter hole, and the second layer is filtered through the filter ring.

[0043] Specifically, the automatic detection module 21 includes a reaction unit 211, a lifting unit 212 and a replacement unit 213; wherein, the reaction unit 211 is provided with a detachable reaction head, and the reaction head is provided with multiple detection strips, and different detection strips are used to react with different compounds to obtain different types of detection feedback; the lifting unit 212 is used to drive the reaction unit 211 to extend into or move out of the collection component 3, so that the detection strip contacts and reacts with the internal fluid of the collection component 3 and is moved out of the collection component 3 after the contact reaction; the replacement unit 213 is used to replace the reaction head of the reaction unit 211.

[0044] In this embodiment, it should be noted that when performing the detection operation, the lifting unit 212 drives the reaction unit 211 to extend into the collection component 3. At this time, the reaction head is immersed in the internal fluid of the collection component 3, allowing different detection strips to fully react with different compounds, thereby obtaining different types of detection feedback. After a certain period of time, the lifting unit 212 is used to drive the reaction unit 211 to move out of the collection component 3. At this time, the optical analysis module 22 is used to analyze and judge the detection feedback and obtain the detection result. Furthermore, after the detection result is obtained, the reaction head is directly replaced through the replacement unit 213.

[0045] Specifically, the optical analysis module 22 includes multiple optical probes 221 and a processing unit 222; wherein, the multiple optical probes 221 are used to collect detection feedback on multiple detection strips and obtain feedback information after the reaction unit 211 is removed from the collection component 3; the processing unit 222 is used to process the feedback information and obtain the detection results.

[0046] In this embodiment, it should be noted that multiple optical probes 221 are directed at the test strips after the reaction, and feedback information corresponding to the test feedback is obtained through optical acquisition, and then the processing unit 222 processes the feedback information to obtain the test result.

[0047] A method for online water quality monitoring, comprising: S1, placing a sampling device 1 into a water area to be monitored;

[0048] S2. Start the water pump 4312. After a first preset time period, turn off the water pump 4312 and extract the fluid inside the sampling tube head 42 through the sampling line 41 and deliver it to the collection assembly 3. Stop extracting after a second preset time period.

[0049] S3, start the lifting assembly, allowing the lifting assembly to drive the reaction unit 211 into the collection assembly 3 by a preset distance, and close the lifting assembly. After a third preset time period, start the lifting assembly, allowing the lifting assembly to drive the reaction unit 211 to move out of the collection assembly 3, and start the multiple optical probes 221. The multiple optical probes 221 collect detection feedback from the multiple detection strips on the reaction unit 211 and obtain feedback information. The processing unit 222 processes the above feedback information and obtains a detection result. At the same time, the replacement unit 213 replaces the reaction head on the reaction unit 211;

[0050] S4. Continue to start S2.

[0051] In this embodiment, it should be noted that the first preset time period, the second preset time period and the third preset time period are all freely set according to monitoring requirements.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A water quality online monitoring device, characterized in that: It includes a sampling device and a monitoring and analysis module. The sampling device includes a collection component and a sampling component connected to each other. The sampling component includes a sampling pipeline, a sampling tube head and a cleaning part. The cleaning part includes a pumping structure, a water guide support structure, a self-rotating structure and a spray washing structure. The monitoring and analysis module includes an automatic detection module and an optical analysis module. The sampling tube head is sleeved on the end of the sampling pipeline. The outer wall of the sampling tube head is provided with a plurality of openings for allowing fluid to enter the interior of the sampling tube head. The sampling pipeline is used to extract the fluid inside the sampling tube head and transport it to the collection assembly. The water guide support structure is connected to the pumping structure, the spray structure is connected to the water guide support structure and is directly opposite to the outer wall of the sampling tube head. The pumping structure is used to pump fluid into the water guide support structure so that the fluid is sprayed from the spray structure to the outer wall of the sampling tube head. The rotation structure is connected to the water guide support structure, and is used to be pushed by the flowing fluid and drive the water guide support structure to rotate. The water guide support structure is used to rotate the spray structure around the center line of the sampling tube head after the rotation. The automatic detection module is used to simultaneously detect the contents of multiple substances in the fluid inside the collection component and obtain multiple detection feedbacks, and the optical analysis module is used to collect multiple detection feedbacks and obtain detection results through analysis and judgment.

2. The water quality online monitoring device according to claim 1, characterized in that: The pumping structure includes a base, a pump and an intermediate pipeline; wherein, The base includes a top plate and a bottom plate arranged opposite to each other, the water pump is arranged between the top plate and the bottom plate, the water guide support structure is arranged on the top plate, one end of the intermediate pipeline is connected to the water pump, and the other end of the intermediate pipeline passes through the top plate and is connected to the water guide support structure; A water inlet is provided at the bottom of the water pump, and a filter ring is sleeved on the water inlet.

3. The water quality online monitoring device according to claim 2, characterized in that: The water guide support structure comprises: A connecting column disposed in the center of the top plate; A pipe rack provided on the outer wall of the connecting column; and A first retaining ring is provided on the top of the pipe rack; wherein, The tube rack includes a horizontal portion and a vertical portion, wherein the horizontal portion extends horizontally outward from the outer wall of the connecting column, and the vertical portion extends vertically upward from the end of the horizontal portion, and the first retaining ring is fixed to the top of the vertical portion, and the first retaining ring surrounds the sampling tube head; The connecting column, the horizontal portion and the vertical portion are hollow and connected in sequence. The connecting column is connected to the intermediate pipeline, and the spray structure is provided on the vertical portion.

4. The water quality online monitoring device according to claim 3, characterized in that: The connecting column is provided with a reinforcement portion, and the reinforcement portion includes a second retaining ring surrounding the sampling tube head, and the second retaining ring is connected to a connecting rod fixed on the connecting column.

5. The water quality online monitoring device according to claim 3, characterized in that: The spray structure includes a plurality of nozzles facing the outer wall of the sampling tube head. The plurality of nozzles are sequentially arranged on the vertical portion from top to bottom, and the nozzles are connected to the interior of the vertical portion.

6. The water quality online monitoring device according to claim 5, characterized in that: The self-rotating structure comprises: a retaining plate disposed around the connecting post; and A plurality of fan blades are arranged at the bottom of the retaining plate; wherein, The plurality of fan blade paddles are evenly distributed on the bottom surface of the retaining plate in a circumferential direction. The fan blade paddles are used to drive the retaining plate to rotate around the center line of the connecting column after being pushed by the flowing fluid.

7. The online water quality monitoring device according to any one of claims 2 to 6, characterized in that: A protective layer is provided between the top plate and the bottom plate, the protective layer is arranged around the water pump, and filtering holes are opened on the protective layer.

8. The online water quality monitoring device according to any one of claims 1 to 6, characterized in that: The automatic detection module includes a reaction unit, a lifting unit and a replacement unit; wherein, The reaction unit is provided with a detachable reaction head, and the reaction head is provided with a plurality of detection strips, and different detection strips are used to react with different compounds to obtain different types of detection feedback; The lifting unit is used to drive the reaction unit to extend into or move out of the collection assembly, so that the detection strip contacts and reacts with the fluid inside the collection assembly and is moved out of the collection assembly after the contact reaction; The replacement unit is used to replace the reaction head of the reaction unit.

9. The online water quality monitoring device according to any one of claims 1 to 6, characterized in that: The optical analysis module includes multiple optical probes and processing units; wherein, The plurality of optical probes are used to collect detection feedback on the plurality of detection strips and obtain feedback information after the reaction unit is removed from the collection assembly; The processing unit is used to process the feedback information and obtain the detection result.

Images