Automatic water quality detection equipment and use method

Abstract

The invention discloses automatic water quality detection equipment and a use method. The automatic water quality detection equipment comprises a detector body; leak holes are formed in the periphery of the detector body, and a water taking pipe, a detector and a water stop valve are arranged in the detector body; a water taking piston capable of sliding up and down is arranged in the water taking pipe; the water taking piston comprises an upper baffle, a lower ring frame and a piston block; the upper baffle is connected with the lower ring frame through a telescopic column, a sleeve is arranged at the bottom of the lower baffle, the sleeve is connected with a piston block through a telescopic rod, the telescopic rod is slidably connected with the sleeve, the piston block is fixedly connected with the telescopic rod, and the piston block is slidably connected with the lower ring frame. The air pressure in the water taking area is adjusted through the air pump, the buoyancy of the detector body in water can be changed, and the device can freely sink or float in to-be-detected water sources at different depths, so that water quality detection at different water layers is facilitated, and more comprehensive and accurate water quality data are obtained.

Description

Technical Field

[0001] The present invention relates to a water quality detection device, and in particular to an automated water quality detection device and a use method thereof. Background Art

[0002] Water testing is an important means to ensure water quality safety, human health and environmental sustainable development. The origin of water testing technology can be traced back to the concern of environmental science about water pollution. In the early days, scientists mainly used simple physical and chemical methods to detect pollutants in water. With the advancement of science and technology, modern water testing technology has developed into a comprehensive technical system involving chemistry, environmental science, biology, information science and other disciplines.

[0003] Water testing usually includes multiple indicators, which reflect different aspects of the water body. The following are some common water testing indicators and their detection methods: Physical indicators: such as temperature, color, turbidity, conductivity, etc. These indicators are usually obtained by direct measurement of instruments. Chemical indicators: such as pH value, dissolved oxygen, chemical oxygen demand (COD), biochemical oxygen demand (BOD), total nitrogen, total phosphorus, etc. These indicators reflect the types and concentrations of pollutants in the water body, and are often detected by chemical analysis or instrumental analysis. Biological indicators: such as total bacteria count, coliform group, etc. These indicators are used to assess the degree of biological contamination of water bodies, and are often detected by microbial culture or molecular biology methods.

[0004] However, in practical applications, water quality testing faces many challenges. On the one hand, water quality testing equipment in existing technologies often finds it difficult to accurately sample different water layers, which limits our comprehensive understanding of water quality changes in the vertical direction of the water body, resulting in incomplete and inaccurate water quality data. On the other hand, problems of over- or under-watering also occur from time to time in traditional water quality testing, which directly affects the accuracy of sampling and, in turn, the reliability of water quality assessment. In addition, existing water quality testing equipment also has limitations in adapting to testing tasks of different scales and complexities.

[0005] Therefore, there is an urgent need for an automated water quality testing device and a method for using the same to solve the technical problems existing in the above-mentioned prior art. Summary of the invention

[0006] The present invention overcomes the deficiencies of the prior art and provides an automated water quality testing device and a use method thereof.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an automated water quality detection device, comprising: a detector body; leakage holes are provided on all sides of the detector body, a water intake pipe, a detector and a water stop valve are arranged in the detector body; a water intake piston that can slide up and down is arranged in the water intake pipe, and the water intake piston comprises: an upper baffle, a lower ring frame and a piston block; the upper baffle is connected to the lower ring frame by a telescopic column, a sleeve is provided at the bottom of the lower baffle, the sleeve and the piston block are connected by a retractable rod, the retractable rod is slidably connected to the sleeve, the piston block is fixedly connected to the retractable rod, the piston block is slidably connected to the lower ring frame, the telescopic condition of the sleeve and the retractable rod is controlled by an air pump, and the amount of water that can be stored in the water intake piston at a time is determined by the height of the telescopic column; a water outlet is provided on one side of the water intake piston, the detector is connected to the water outlet, and the water stop valve is located below the water intake piston.

[0008] In a preferred embodiment of the present invention, the detector adopts at least one of a water hardness detector, a suspended matter detector, a BOD detector, an ammonia nitrogen detector, a pH meter, a colorimeter, a COD detector, a conductivity meter, an infrared oil meter, a heavy metal detector, a cold atomic mercury meter, and a gas chromatography-mass spectrometry instrument.

[0009] In a preferred embodiment of the present invention, water quality testing includes but is not limited to water hardness, suspended matter, BOD (biological oxygen demand), ammonia nitrogen, pH value, color, COD (chemical oxygen demand), conductivity, oil content, heavy metal content, mercury content and complex analysis performed by gas chromatography-mass spectrometry.

[0010] In a preferred embodiment of the present invention, the top of the detector body has a through hole, and the bottom has a water storage tank. One end of the water intake pipe is connected to the through hole, and the other end abuts against the bottom of the water storage tank. A water intake hammer is provided at the end of the water intake pipe abutting against the bottom of the water storage tank, and a plurality of filter holes are provided around the water intake hammer.

[0011] In a preferred embodiment of the present invention, a water intake valve is rotatably connected to the leakage hole, positioning columns are provided on both sides of the water intake valve, a return spring is provided between the two positioning columns, and an elastic rod is provided in the middle part of the return spring.

[0012] In a preferred embodiment of the present invention, there are a plurality of detector bodies, and fixing rings are disposed around the detector bodies. Every two detector bodies are connected by a fixing rope passing through the fixing rings.

[0013] In a preferred embodiment of the present invention, a block is provided on the water intake pipe below the water stop valve.

[0014] In a preferred embodiment of the present invention, a partition is provided in the detector body, and the detector body is divided into a water intake area and a detection area by the partition; the water sample entering the detector body through the leakage hole is stored in the water intake area, and the water intake piston quantitatively transports the water sample in the water intake area to the detection area, which is then detected by the detector.

[0015] In a preferred embodiment of the present invention, a sealing ring is provided at the connection between the water intake pipe and the partition, and the sealing ring is made of one of the materials selected from the group consisting of rubber, textile and plastic.

[0016] In a preferred embodiment of the present invention, the position of the water intake piston in the water intake pipe and the air pressure value in the water intake area are both controlled and adjusted by the air pump.

[0017] In a preferred embodiment of the present invention, a method for using an automated water quality testing device is applied to the above-mentioned automated water quality testing device, comprising the following steps:

[0018] S1. According to the test environment or test requirements, select one detector body or multiple detector bodies for water quality testing. When multiple detector bodies are selected, use a fixed rope to connect the multiple detector bodies in sequence, and then put them into the test water area to implement the test work;

[0019] S2, the detector body is immersed in the water source to be tested, affected by the water pressure, and the air pump adjusts the air pressure in the water intake area, so that the water intake valve rotates inward, and the water sample to be tested enters and is stored in the water intake area for sampling and testing by the detector;

[0020] S3, the air pump adjusts the position of the water intake piston in the water intake pipe, adjusts the air pressure change in the water intake pipe, so that the water in the water intake area is sucked into the water intake pipe, and then repeatedly adjusts the position of the retracted rod in the casing by using the air pump to allow the water sample to enter the water intake piston;

[0021] S4, using the air pump again to adjust the position of the retracted rod in the casing, so that the piston block blocks the lower ring frame at the bottom of the water sampling piston, thereby obtaining a quantitative test water sample;

[0022] S5. The detector extracts the test water sample in the water sampling piston and performs a test. The test result is transmitted to the test administrator in a visual form.

[0023] In a preferred embodiment of the present invention, the air pump is used to adjust the air pressure in the water intake area so that the detector body can be sunk into water sources to be tested at different depths.

[0024] The present invention solves the defects existing in the background technology and has the following beneficial effects:

[0025] (1) The present invention can change the buoyancy of the detector body in the water by adjusting the air pressure in the water intake area through an air pump, so that the device can freely sink or float in the water source to be tested at different depths, thereby facilitating water quality testing in different water layers and obtaining more comprehensive and accurate water quality data. After the device is immersed in the water source to be tested, the water intake valve will rotate inward and open under the influence of the water pressure. The air pressure in the water intake area is adjusted by the air pump to control the amount of water sample entering, thereby helping to avoid excessive or insufficient water intake and ensuring the accuracy of sampling. In addition, the position of the retracted rod in the casing is repeatedly adjusted by the air pump, so that the water sample is gradually sucked into the water intake piston and stored in the space between the piston block and the lower ring frame. When it is necessary to obtain a quantitative test water sample, the air pump adjusts the position of the retracted rod again to move the piston block downward to block the lower ring frame, thereby helping to ensure that the amount of water sampled each time is consistent and improve the accuracy and comparability of the detection.

[0026] (2) The present invention is provided with a water intake hammer and a filter hole, which helps to break the aggregation state of suspended particles and impurities in the water during use, making them easier to separate. At the same time, the filter hole can also block impurities and particles from entering the water storage tank, improve the purity of water quality, thereby helping to reduce the impact of impurities on the test results and improve the accuracy of the test.

[0027] (3) The device provided by the present invention can flexibly select one or more detector bodies for water quality testing according to the test environment or test requirements, thereby ensuring that the device can adapt to test tasks of different scales and complexities, and improving the pertinence and practicality of the test. At the same time, the air pressure in the water intake area is adjusted by an air pump, and the device can sink in the water source to be tested at different depths, and effectively cope with the influence of water pressure, ensuring the smooth progress of the sampling process, thereby not only expanding the detection range of the device, but also improving the accuracy and representativeness of the sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0030] Figure 2 is a schematic cross-sectional structural diagram of a detector body of a preferred embodiment of the present invention;

[0031] Figure 3is a schematic cross-sectional view of the water intake piston of a preferred embodiment of the present invention;

[0032] Figure 4 is a structural schematic diagram of a water intake valve according to a preferred embodiment of the present invention;

[0033] Figure 5 It is a flow chart of the method of using the detector body according to the preferred embodiment of the present invention.

[0034] In the figure: 1. detector body; 1.1. fixing ring; 1.2. through hole; 1.3. leakage hole; 1.4. partition; 1.5. water storage tank; 2. fixing rope; 3. water intake pipe; 3.1. water intake hammer; 3.2. filter hole; 4. detector; 5. water intake piston; 5.1. upper baffle plate; 5.2. lower ring frame; 5.3. telescopic column; 5.4. sleeve; 5.5. retractable rod; 5.6. piston block; 6. water stop valve; 7. block; 8. water intake valve; 8.1. positioning column; 8.2. reset spring; 8.3. elastic rod. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, "multiple" means two or more.

[0038] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0039] like Figure 1 and Figure 3 As shown, an automated water quality detection device comprises: a detector body 1; leak holes 1.3 are provided around the detector body 1, a water intake pipe 3, a detector 4 and a water stop valve 6 are arranged in the detector body 1; a water intake piston 5 that can slide up and down is arranged in the water intake pipe 3, and the water intake piston 5 comprises: an upper baffle plate 5.1, a lower ring frame 5.2 and a piston block 5.6; the upper baffle plate 5.1 and the lower ring frame 5.2 are connected by a telescopic column 5.3, and a sleeve 5.4 is arranged at the bottom of the lower baffle plate, and the sleeve The cylinder 5.4 and the piston block 5.6 are connected by a retractable rod 5.5, the retractable rod 5.5 is slidably connected to the sleeve 5.4, the piston block 5.6 is fixedly connected to the retractable rod 5.5, the piston block 5.6 is slidably connected to the lower ring frame 5.2, the extension and retraction of the sleeve 5.4 and the retractable rod 5.5 are controlled by the air pump, and the amount of water that can be stored in the water intake piston 5 at a time is determined by the height of the retractable column 5.3; a water outlet is provided on one side of the water intake piston 5, the detector 4 is connected to the water outlet, and the water stop valve 6 is located below the water intake piston 5.

[0040] Furthermore, in the initial state, the water intake piston 5 is at a certain position of the water intake pipe 3, and the space between the piston block 5.6 and the lower ring frame 5.2 (i.e., the water intake space) is connected to the detector 4 through the water outlet, but water does not flow out due to the presence of the water stop valve 6. At this time, the pressure in the water intake space is basically balanced with the external water pressure.

[0041] As the piston block 5.6 continues to move upward, the pressure in the water intake space gradually increases and exceeds the external water pressure. At this time, under the action of the pressure difference, the external water begins to enter the water intake pipe 3 through the leakage holes 1.3 around the detector body 1 and is further compressed into the water intake space.

[0042] When the piston block 5.6 moves up to a certain position (determined by the height of the telescopic column 5.3), sufficient water is stored in the water intake space. At this time, the air pump stops working and the piston block 5.6 remains in the same position. Subsequently, the water stop valve 6 is opened, and the water in the water intake space flows into the detector 4 through the water outlet under the action of pressure for detection.

[0043] After the test is completed, the water stop valve 6 is closed. The air pump works again, and the piston block 5.6 moves downward and resets by controlling the expansion and contraction of the sleeve 5.4 and the retracted rod 5.5. During this process, the pressure in the water intake space gradually decreases and returns to a state of equilibrium with the external water pressure, preparing for the next water intake.

[0044] The detector body 1 has a through hole 1.2 on the top and a water storage tank 1.5 on the bottom. One end of a water intake pipe 3 is connected to the through hole 1.2 and the other end abuts against the bottom of the water storage tank 1.5. A water intake hammer 3.1 is provided at the end of the water intake pipe 3 abutting against the bottom of the water storage tank 1.5. A plurality of filter holes 3.2 are provided around the water intake hammer 3.1.

[0045] Furthermore, the water intake hammer 3.1, as the part where the water intake pipe 3 abuts against the bottom of the water storage tank 1.5, not only guides the water flow, but also increases the turbulence of the water flow through a special structure. When the water flow passes through the water intake hammer 3.1, it will be hindered and disturbed to a certain extent, which helps to break the aggregation state of suspended particles and impurities in the water, making them easier to separate.

[0046] like Figure 2 As shown, the filter holes 3.2 are distributed around the water intake hammer 3.1, forming a plurality of fine filter channels. When water flows through these channels, impurities and particles therein will be blocked outside the filter holes 3.2, and only relatively pure water can pass through and enter the water storage tank 1.5, thereby effectively reducing the impurity content entering the water storage tank 1.5 and improving the purity of the water quality.

[0047] like Figure 4 As shown, a water intake valve 8 is rotatably connected to the leakage hole 1.3, positioning columns 8.1 are arranged on both sides of the water intake valve 8, a return spring 8.2 is arranged between the two positioning columns 8.1, and an elastic rod 8.3 is arranged in the middle part of the return spring 8.2.

[0048] Furthermore, the return spring 8.2 has good elasticity and restoring force, and can provide sufficient force to restore the water inlet valve 8 to its original position after it is opened by force. Even under the action of external water flow or other forces, the water inlet valve 8 can be closed quickly and accurately, ensuring the sealing and accuracy of the device.

[0049] The elastic rod 8.3 is located in the middle part of the reset spring 8.2, and works together with the reset spring 8.2 to provide a more stable and reliable support for the reset of the water intake valve 8. When the water intake valve 8 is opened, the elastic rod 8.3 will also undergo elastic deformation and store a certain amount of energy. When the external force disappears, the elastic rod 8.3 will release the stored energy and push the water intake valve 8 to reset quickly together with the reset spring 8.2.

[0050] There are several detector bodies 1. Fixing rings 1.1 are arranged around the detector bodies 1. Every two detector bodies 1 are connected by fixing ropes 2 passing through the fixing rings 1.1.

[0051] Furthermore, the fixing rope 2 can be made of hemp rope, steel cable, nylon or other materials.

[0052] The water intake pipe 3 is provided with a block 7 below the water stop valve 6. The block 7 can prevent the water sample from flowing back in the water intake pipe, ensuring the accuracy and reliability of sampling. A partition 1.4 is provided in the detector body 1, and the detector body 1 is divided into a water intake area and a detection area by the partition 1.4; the water sample entering the detector body 1 through the leak hole 1.3 is stored in the water intake area, and the water intake piston 5 quantitatively transports the water sample in the water intake area to the detection area, and then the detector 4 detects it.

[0053] A sealing ring is provided at the connection between the water intake pipe 3 and the partition plate 1.4, and the sealing ring is made of one of rubber, textile and plastic. The position of the water intake piston 5 in the water intake pipe 3 and the air pressure value in the water intake area are controlled and adjusted by the air pump.

[0054] like Figure 5 As shown, a method for using an automated water quality testing device is applied to the above-mentioned automated water quality testing device, comprising the following steps:

[0055] S1. According to the test environment or test requirements, select one detector body 1 or multiple detector bodies 1 for water quality testing. When multiple detector bodies 1 are selected, use a fixed rope 2 to connect the multiple detector bodies 1 in sequence, and then put them into the test water area to implement the test work;

[0056] S2, the detector body 1 is immersed in the water source to be tested, and is affected by the water pressure. The air pump adjusts the air pressure in the water intake area, so that the water intake valve 8 rotates inward, and the water sample to be tested enters and is stored in the water intake area for sampling and testing by the detector 4;

[0057] S3, the air pump adjusts the position of the water intake piston 5 in the water intake pipe 3, adjusts the air pressure change in the water intake pipe 3, so that the water in the water intake area is sucked into the water intake pipe 3, and then repeatedly adjusts the position of the retracted rod 5.5 in the casing by using the air pump multiple times, so that the water sample enters the water intake piston 5;

[0058] S4, using the air pump again to adjust the position of the retracted rod 5.5 in the casing, so that the piston block 5.6 blocks the lower ring frame 5.2 at the bottom of the water intake piston 5, thereby obtaining a quantitative test water sample;

[0059] S5. The detector 4 extracts the test water sample in the water sampling piston 5 and performs a test. The test result is transmitted to the test administrator in a visual form.

[0060] By adjusting the air pressure in the water intake area through an air pump, the detector body 1 can be sunk into water sources to be tested at different depths.

[0061] Furthermore, in the technical solution, the specific steps of adjusting the air pressure in the water intake area by using an air pump are as follows:

[0062] A1. Place the detector body 1 into the water source to be tested, and ensure that the leak hole 1.3 is immersed in the water source to be tested; turn on the power of the control system, and initialize the control system and the air pump;

[0063] A12. According to the water intake demand, combined with the depth, temperature and water quality of the water source to be measured, the target pressure value is set on the control system. The control system will automatically adjust the output pressure of the air pump according to the target pressure value;

[0064] A3. When the pressure in the detector body 1 reaches a preset value, the control system will turn off the air pump and keep the pressure in the detector body stable. When the pressure is stable, the water intake valve 8 is opened to allow the water source to be tested to enter the detector body 1;

[0065] Furthermore, intelligent algorithms (such as PID control algorithms) are used to optimize the pressure adjustment process and improve the adjustment speed and accuracy;

[0066] A4. During the water extraction process, the pressure sensor will continuously monitor the pressure value in the detector body 1 and transmit the signal to the control system. If the pressure value deviates from the preset range, the control system will automatically adjust the output pressure of the air pump to maintain the pressure in the detector body 1 stable.

[0067] A5. After obtaining enough water samples, adjust the air pump again so that the water intake valve 8 is closed, and adjust the output pressure of the air pump through the control system so that the pressure in the detector body 1 gradually decreases to atmospheric pressure.

[0068] Embodiment 1

[0069] Water is the source of life. With the booming economy, the once clear and vibrant river is now covered with garbage. Unknown green aquatic plants and possible microbial communities are floating on the water. These abnormal greens are particularly abrupt and make people uncomfortable. By consulting the information, we know that this is the direct consequence of eutrophication pollution of the water body.

[0070] Walking along the river, you can often see large pieces of domestic garbage floating in the water, and there are countless small pieces of garbage. Upon closer inspection, the river water is dark in color, and when it merges with the discharged domestic sewage, the color is almost black. The polluted river also bears the responsibility of irrigating local farmland. Therefore, the current situation of this river not only affects the ecological environment, but also directly threatens human agricultural production and food safety.

[0071] In order to further determine the pollution status of the river, the detection equipment provided by the present invention is used for detection, and the retrieval process is as follows:

[0072] Take 3 detector bodies and equip them with an automated control system; for the detectors, select laser induced breakdown spectrometer (LIBS) and high-resolution mass spectrometer; other auxiliary equipment, such as thermometer, pH meter, conductivity meter, etc.

[0073] In this embodiment, an automated control system is deployed upstream and downstream of the river, in different river sections, at the source, at the confluence point, and in areas with intensive human activities, and it is ensured that the automated control system is stable and that the water intake device can operate normally.

[0074] Through the automatic control system, the air pressure reduction rate is precisely controlled to open the water valve slowly and evenly. According to the sampling depth, the height of the telescopic column is adjusted to ensure that the water piston is in the correct position in the water pipe. Wait for the water sample to enter the water piston and close the water valve after reaching the set sampling volume.

[0075] The sampled water samples are placed in different containers and labeled with the sampling time, location and depth. The water samples that need pretreatment are filtered, concentrated or extracted.

[0076] Use thermometers, pH meters, conductivity meters and other equipment to test the physical parameters of water samples. Use LIBS for rapid elemental analysis and test heavy metal concentrations. Use high-resolution mass spectrometers to identify complex organic matter and test organic pollutant concentrations. Use other chemical analysis methods to test the concentrations of inorganic pollutants and other chemicals.

[0077] The experimental report of this embodiment is as follows: pH value: the pH value of the river water sample was measured to be 7.2. Although it belongs to the neutral range, it is close to the critical value of acidity or alkalinity, and its changing trend needs to be paid attention to; Dissolved oxygen: the dissolved oxygen concentration of the river water sample was measured to be 3 mg / L, which is lower than the normal value, indicating that the oxygen content of the river water body is insufficient, which may affect the breathing and survival of aquatic organisms; The turbidity of the river water sample was measured to be 80 NTU, the total nitrogen concentration was 2.0 mg / L, and the total phosphorus concentration was 0.5 mg / L.

[0078] The pH value is an important indicator to measure the acidity and alkalinity of water bodies. Although the pH value of 7.2 is still neutral, it is close to the critical value, and we need to be vigilant about changes in the acidity and alkalinity of water bodies. Dissolved oxygen is a key indicator to measure the dissolved oxygen content in water bodies. A dissolved oxygen concentration of 3 mg / L indicates that the oxygen content in river water is low, which may pose a threat to the survival of aquatic organisms. Turbidity, total nitrogen and total phosphorus are important indicators to measure the degree of water pollution. A turbidity of 80 NTU, a total nitrogen of 2.0 mg / L and a total phosphorus concentration of 0.5 mg / L indicate that the river water is seriously polluted and corresponding measures need to be taken to control it.

[0079] Embodiment 2

[0080] Select three detector bodies suitable for marine environment and equip them with automatic control systems to ensure that the system can operate stably in the marine environment. Select laser induced breakdown spectrometer (LIBS) and high-resolution mass spectrometer, as well as auxiliary equipment such as thermometer, salinity meter, pH meter, conductivity meter, etc.

[0081] Automated control systems are deployed in different areas of the ocean, such as nearshore, offshore and deep sea areas; at different depths in the surface, middle and bottom layers; and in areas with dense human activities such as ports and fishing grounds, to ensure that the automated control systems are stable and that the water intake devices can adapt to changes in ocean waves and tides and operate normally.

[0082] The sampling process is precisely controlled through an automated control system to ensure that water samples can enter the water collection device accurately and without contamination. The detector labels the sampled seawater with the sampling time, location and depth, and filters, concentrates or extracts water samples that need pretreatment to remove suspended matter, salt and other interfering substances.

[0083] Use thermometers, salinity meters, pH meters, conductivity meters and other equipment to detect the physical parameters of seawater. Use LIBS for rapid elemental analysis to detect the concentration of heavy metals and other elements. Use high-resolution mass spectrometers to identify complex organic matter and detect the concentration of organic pollutants (such as petroleum hydrocarbons, polychlorinated biphenyls, etc.). Use other chemical analysis methods to detect the concentration of inorganic pollutants (such as nitrates, nitrites, phosphates, etc.) and other chemicals.

[0084] The experimental report of this embodiment is as follows: PH value: The PH value of the seawater sample was measured to be 8.2, which is within the normal range of ocean water quality, but its changing trend should be noted to prevent acidification or alkalization.

[0085] Dissolved oxygen: The dissolved oxygen concentration of seawater samples was measured to be 6.0 mg / L. Although it is lower than that of fresh water, it is within the normal range for marine water quality. However, we still need to pay attention to its changes to prevent the occurrence of hypoxia.

[0086] Salinity: The salinity of the seawater sample was measured to be 35.0ppt, which is in line with the typical salinity range of marine water quality.

[0087] Turbidity: The turbidity of the seawater sample was measured to be 10 NTU, which is relatively low, indicating that the seawater in the area is relatively clear.

[0088] Total nitrogen concentration: The total nitrogen concentration of the seawater samples was measured to be 0.3 mg / L, which is at a relatively low level, indicating that the degree of nitrogen pollution in the seawater in this area is relatively light.

[0089] Total phosphorus concentration: The total phosphorus concentration of the seawater sample was measured to be 0.05 mg / L, which is also at a relatively low level, indicating that the degree of phosphorus pollution in the seawater in this area is also relatively light.

[0090] Other pollutants: LIBS and high-resolution mass spectrometer detection revealed no obvious heavy metal pollution or excessive amounts of organic pollutants.

[0091] When the present invention is used, a single or multiple detector bodies 1 can be selected for water quality testing according to the testing requirements. When multiple detectors are used, they are connected together by a fixing rope 2 and then placed in the water area to be tested. In the initial state, the water intake valve 8 remains closed due to the action of the reset spring 8.2 to prevent external water from entering the water intake area. At the same time, the water intake piston 5 is in the initial position in the water intake pipe 3, and a gap is left between the piston block 5.6 and the lower ring frame 5.2 to facilitate subsequent water intake.

[0092] When the detector body 1 is immersed in the water source to be tested, the water intake valve 8 will rotate inwards and open due to the pressure in the water, allowing the water sample to be tested to enter the water intake area. At this time, the air pump can be used to adjust the air pressure in the water intake area to control the opening degree of the water intake valve 8, thereby controlling the amount of water sample entering.

[0093] The air pump adjusts the position of the water intake piston 5 in the water intake pipe 3, and changes the air pressure in the water intake pipe 3, so that the water in the water intake area is sucked into the water intake pipe 3. At this time, the water sample begins to enter the space above the water intake piston 5. By repeatedly adjusting the position of the retracted rod 5.5 in the sleeve, the water sample can be gradually sucked into the water intake piston 5 and stored in the space between the piston block 5.6 and the lower ring frame 5.2.

[0094] When it is necessary to obtain a quantitative test water sample, the air pump adjusts the position of the retracted rod 5.5 in the sleeve again, so that the piston block 5.6 moves downward to block the lower ring frame 5.2 at the bottom of the water-taking piston 5. At this time, the water-taking piston 5 has just stored a quantitative test water sample.

[0095] The detector 4 is connected to the water extraction piston 5 through the water outlet, and extracts the test water sample in the water extraction piston 5 for testing. The test results are transmitted to the test administrator in a visual form (such as digital display, chart, etc.) for subsequent data analysis and processing.

[0096] By adjusting the air pressure in the water intake area through the air pump, the buoyancy of the detector body 1 in the water can be changed, so that the device can sink or float in the water source to be tested at different depths. This helps to perform water quality testing at different water depths and obtain more comprehensive water quality data.

[0097] The above is based on the ideal embodiment of the present invention. Through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. An automated water quality testing device, comprising: Detector body; characterized in that leakage holes are provided on all sides of the detector body, and a water intake pipe, a detector and a water stop valve are arranged in the detector body; a water intake piston that can slide up and down is arranged in the water intake pipe, and the water intake piston comprises: an upper baffle, a lower ring frame and a piston block; the upper baffle and the lower ring frame are connected by a telescopic column, a sleeve is provided at the bottom of the lower baffle, the sleeve and the piston block are connected by a retractable rod, the retractable rod is slidably connected to the sleeve, the piston block is fixedly connected to the retractable rod, the piston block is slidably connected to the lower ring frame, the extension and retraction of the sleeve and the retractable rod is controlled by an air pump, and the amount of water that can be stored in the water intake piston at a single time is determined by the height of the telescopic column; a water outlet is provided on one side of the water intake piston, the detector is connected to the water outlet, and the water stop valve is located below the water intake piston.

2. The automated water quality testing device according to claim 1, characterized in that: The detector body has a through hole on the top and a water storage tank on the bottom. One end of the water intake pipe is connected to the through hole, and the other end abuts against the bottom of the water storage tank. A water intake hammer is provided at the end of the water intake pipe abutting against the bottom of the water storage tank, and a plurality of filter holes are provided around the water intake hammer.

3. The automated water quality testing device according to claim 1, characterized in that: The leak hole is rotatably connected with a water intake valve, positioning columns are arranged on both sides of the water intake valve, a return spring is arranged between the two positioning columns, and an elastic rod is arranged in the middle part of the return spring.

4. The automated water quality testing device according to claim 1, characterized in that: There are a plurality of detector bodies, and fixing rings are arranged around the detector bodies. Every two detector bodies are connected by a fixing rope passing through the fixing rings.

5. The automated water quality testing device according to claim 1, characterized in that: The water intake pipe is provided with a block below the water stop valve.

6. The automated water quality testing device according to claim 1, characterized in that: A partition is provided in the detector body, which divides the detector body into a water intake area and a detection area; the water sample entering the detector body through the leakage hole is stored in the water intake area, and the water intake piston quantitatively transports the water sample in the water intake area to the detection area, which is then detected by the detector.

7. An automated water quality testing device according to claims 1 and 6, characterized in that: A sealing ring is arranged at the connection between the water intake pipe and the partition plate, and the sealing ring is made of one of the materials selected from the group consisting of rubber, textile and plastic.

8. An automated water quality testing device according to claims 1 and 6, characterized in that: The position of the water intake piston in the water intake pipe and the air pressure value in the water intake area are both controlled and adjusted by the air pump.

9. A method for using an automated water quality testing device, based on the automated water quality testing device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. According to the test environment or test requirements, select one detector body or multiple detector bodies for water quality testing. When multiple detector bodies are selected, use a fixed rope to connect the multiple detector bodies in sequence, and then put them into the test water area to implement the test work; S2, the detector body is immersed in the water source to be tested, affected by the water pressure, and the air pump adjusts the air pressure in the water intake area, so that the water intake valve rotates inward, and the water sample to be tested enters and is stored in the water intake area for sampling and testing by the detector; S3, the air pump adjusts the position of the water intake piston in the water intake pipe, adjusts the air pressure change in the water intake pipe, so that the water in the water intake area is sucked into the water intake pipe, and then repeatedly adjusts the position of the retracted rod in the casing by using the air pump to allow the water sample to enter the water intake piston; S4, using the air pump again to adjust the position of the retracted rod in the casing, so that the piston block blocks the lower ring frame at the bottom of the water sampling piston, thereby obtaining a quantitative test water sample; S5. The detector extracts the test water sample in the water sampling piston and performs a test. The test result is transmitted to the test administrator in a visual form.

10. The method for using the automated water quality testing device according to claim 9, characterized in that: By adjusting the air pressure in the water intake area through the air pump, the detector body can be sunk into the water source to be tested at different depths.

Images