In-situ analysis device and method for water body organic pollutants by integrated micro-spectrometer

Abstract

The application relates to the technical field of spectrometers, and discloses an in-situ analysis device and method for water body organic pollutants of an integrated micro spectrometer, which comprises an outer collecting pipe, one side of the outer collecting pipe is fixedly connected with a bottom connecting plate, one side of the bottom connecting plate is fixedly connected with a centrifugal cylinder, one side of the centrifugal cylinder is fixedly connected with a side support frame, one side of the centrifugal cylinder is fixedly connected with a No. 1 liquid inlet pipe, the polluted mixed liquid is filtered through rotation, the influence of more impurity particles on subsequent analysis is reduced, and the accuracy of subsequent spectral analysis and detection is improved; the temperature of the polluted mixed liquid is increased to a proper temperature through preheating, the efficiency of subsequent spectral analysis is improved; the liquid in a temperature exchange bin is driven to flow back into a temperature rising box along an outlet pipe through starting of an outlet pump, the liquid is driven to form a circulation along the temperature exchange bin and the temperature rising box through the driving of the inlet pump and the outlet pump, and the temperature rising efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of spectrometer technology, specifically a device and method for in-situ analysis of organic pollutants in water using an integrated miniature spectrometer. Background Technology

[0002] The integrated miniature spectrometer water organic pollutant in-situ analysis device is an intelligent device that enables real-time, in-situ monitoring of organic pollutants in water based on spectroscopic technology. This device has a response speed of seconds, supports rapid on-site deployment, and is suitable for scenarios such as sewage outlets, river sections, and drinking water sources. The detection and response time of pollution events is reduced by more than 70% compared with traditional methods.

[0003] In the prior art, patent application CN119198574A discloses "An in-situ detection device and method for aquatic sediments," comprising: a light source for providing illumination required for measurement; a polarizer for polarization modulation of the illumination source to generate incident light of the desired polarization state incident on the sediment sample; an analyzer corresponding to the polarizer for measuring the polarization state information of the outgoing light from the sediment sample; an imaging system for capturing and recording the polarization state information measured by the analyzer, generating a Müller matrix image; a data processing module for processing the Müller matrix image data, calculating the Müller matrix based on the image data, and analyzing the polarization characteristics of the sediment sample for identification and analysis; and an in-situ endoscopic probe, including a housing with an optical window and a waterproof enclosure. This in-situ endoscopic measurement scheme for aquatic sediments enables efficient and accurate in-situ measurement, obtaining the true polarization information of sediments under natural conditions, and providing reliable data support for aquatic environmental research and sediment analysis.

[0004] The aforementioned "an in-situ detection device and method for water sediments" still has some drawbacks. For example, during the spectral analysis of polluted water entering the analyzer, the analysis process is easily affected by the temperature and impurities of the polluted water. Although the existing analyzer is equipped with a constant temperature reaction chamber, it is necessary to send the collected polluted water at different temperatures into the reaction chamber for a long time to control the temperature, resulting in low analysis efficiency.

[0005] To address these issues, this paper proposes an in-situ analysis device and method for organic pollutants in water using an integrated micro spectrometer. Summary of the Invention

[0006] In view of the above situation and to overcome the shortcomings of the prior art, the present invention provides an in-situ analysis device and method for organic pollutants in water using an integrated micro spectrometer, which effectively solves the problem that current integrated micro spectrometers on the market require a long time to control the temperature of the polluted water source solution to a specified temperature when dealing with polluted water at different temperatures, resulting in low analysis efficiency.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an in-situ analysis device and method for organic pollutants in water using an integrated micro spectrometer, comprising an external acquisition tube, a bottom connecting plate fixedly connected to one side of the external acquisition tube, a centrifuge cylinder fixedly connected to one side of the bottom connecting plate, a side support frame fixedly connected to one side of the centrifuge cylinder, a first inlet pipe fixedly connected to one side of the centrifuge cylinder, a solenoid valve and a first inlet pump sequentially arranged along the liquid flow direction on the first inlet pipe, the solenoid valve being used to control the flow of filtered liquid, the first inlet pump being used to drive the liquid flow, a heat exchange sleeve fixedly connected to one side of the first inlet pipe, a second inlet pipe fixedly connected to one side of the heat exchange sleeve, and a second inlet pipe fixedly connected to one side of the second inlet pipe. There is a second inlet pump. One end of the second inlet pipe is fixedly connected to a spectrometer analyzer. The bottom of the spectrometer analyzer is fixedly connected to a bottom support base. A regulating box is fixedly connected to one side of the spectrometer analyzer. A heating box is fixedly connected to one side of the regulating box. An electronic controller is fixedly connected to one side of the heating box. A heating rod is fixedly connected to one side of the electronic controller. A temperature exchange chamber is fixedly connected to the inside of the regulating box. An inlet pipe is fixedly connected to the top of the temperature exchange chamber. An inlet pump is fixedly connected to one side of the inlet pipe. A top connection chamber is opened on the top of the regulating box. A heat-conducting base is fixedly connected to the top of the top connection chamber. A heat dissipation fin is fixedly connected to the top of the heat-conducting base. A bottom heat exchange plate is fixedly connected to the bottom of the heat-conducting base.

[0008] Preferably, a liquid outlet pipe is fixedly connected to the other side of the temperature exchange chamber, and a liquid outlet pump is fixedly connected to one side of the liquid outlet pipe.

[0009] Preferably, there are two heating chambers, two electronic controllers, two liquid inlet pipes, two liquid inlet pumps, two liquid outlet pipes, and two liquid outlet pumps, and each of the two heating chambers has a connection port on one side.

[0010] Preferably, a top fixing frame is fixedly connected to the top of the regulating box, an arc-shaped frame is fixedly connected to the top of the top fixing frame, a motor body is fixedly connected to the top of the arc-shaped frame, a communicating hole is opened on the surface of the arc-shaped frame, a side transmission rod is fixedly connected to the output shaft of the motor body, a transmission fan is fixedly connected to one side of the side transmission rod, and a filter screen is fixedly connected to the surface of the top fixing frame.

[0011] Preferably, a main gear sleeve is fixedly sleeved on the surface of the side transmission rod, a transmission toothed belt is driven to the surface of the main gear sleeve, a secondary gear sleeve is driven to one side of the transmission toothed belt, a top transmission rod is fixedly connected to one side of the secondary gear sleeve, and a filter cylinder is fixedly connected to one end of the top transmission rod.

[0012] Preferably, a top support frame is fixedly connected to the top of the bottom connecting plate, a top bearing disc is fixedly connected to the inner side of the top support frame, and one side of the top bearing disc is fixedly connected to the top of the auxiliary gear sleeve rod.

[0013] Preferably, there are two heat exchange chambers, and both heat exchange chambers are fixedly connected along both sides of the heat exchange sleeve, and the heat exchange chambers are made of heat-insulating material.

[0014] Preferably, the inner side of the temperature exchange chamber and the inner side of the top connecting chamber are both filled with a liquid with high thermal conductivity.

[0015] Preferably, the surface of the filter cartridge has multiple holes.

[0016] The method for using the integrated miniature spectrometer for in-situ analysis of organic pollutants in water includes the following steps:

[0017] S1. The externally collected contaminated mixture is sent into the centrifuge tube through the external collection tube. At this time, the motor body is started, and the motor body drives the side transmission rod to rotate. The rotating side transmission rod will drive the main gear sleeve to rotate. The rotating main gear sleeve will drive the auxiliary gear sleeve on the other side to rotate synchronously. The rotating auxiliary gear sleeve will drive the top transmission rod to rotate. The rotating top transmission rod will drive the filter cartridge to rotate along the inner side of the centrifuge tube. After the contaminated mixture enters the filter cartridge and centrifuge tube, the continuously rotating filter cartridge will send the liquid to the inner wall of the centrifuge tube, while larger particulate impurities will pass through the filter cartridge and remain inside the filter cartridge for filtration.

[0018] S2. By activating the solenoid valve, the first inlet pipe is opened, and the filtered mixture flows into the first inlet pipe along the centrifuge cylinder (the solenoid valve is opened, and the first inlet pump is started at the same time to draw the filtered mixture from the centrifuge cylinder into the first inlet pipe). At this time, the motor body is turned off, and the two electronic controllers are started. By connecting the electronic controllers to an external power source, the heating rod is driven to heat up. After the heating rod passes through the inside of the connection port, the temperature of the liquid in the heating chamber will be increased. By utilizing the high thermal conductivity of the heat exchange sleeve, the temperature of the first inlet pipe is increased. At this time, the contaminated mixture will be heated to a suitable temperature range when it flows through the inside of the first inlet pipe.

[0019] S3. After the inlet pump sends the heated liquid into the heat exchange chamber, the outlet pump is started to drive the liquid in the heat exchange chamber to flow back into the heating box along the outlet pipe. The liquid is circulated between the heat exchange chamber and the heating box by the drive of the inlet pump and the outlet pump.

[0020] S4. If it is necessary to cool down the liquid in the No. 1 inlet pipe or the liquid in the heating box, start the motor body and use the motor body to drive the side transmission rod to rotate. The rotating side transmission rod will drive the transmission fan to rotate. The continuously rotating transmission fan will generate wind force to blow onto the surface of multiple heat dissipation fins, carrying away the heat from the surface of multiple heat dissipation fins. One side of the bottom heat exchange fin extends into the inside of the top connecting chamber and contacts the liquid. The heat at the top of the heat exchange sleeve will be conducted to the liquid inside the top connecting chamber and guided to the surface of the heat conduction seat and heat dissipation fins along with the bottom heat exchange fin. The rotation of the side transmission rod will cool down the liquid inside the top connecting chamber and the top of the heat exchange sleeve.

[0021] S5. After the temperature is adjusted through the No. 1 inlet pipe, the polluted mixture will flow into the inside of the No. 2 inlet pipe and start the No. 2 inlet pump. By starting the No. 2 inlet pump, the polluted mixture in the No. 2 inlet pipe is sent into the spectrometer for spectral analysis.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1) After the contaminated mixture enters the filter cartridge and centrifuge cartridge, the continuously rotating filter cartridge will send the liquid to the inner wall of the centrifuge cartridge, while larger particulate impurities will pass through the filter cartridge and remain inside the filter cartridge for filtration. By rotating to filter the contaminated mixture, more impurity particles will be reduced and their impact on subsequent analysis will be reduced, thus improving the accuracy of subsequent spectral analysis and detection.

[0024] 2) The liquid in the heating chamber is sent into the heat exchange chamber by the liquid inlet pump. After the liquid is heated, it will come into contact with the surface of the heat exchange sleeve. The high thermal conductivity of the heat exchange sleeve will raise the temperature of the No. 1 liquid inlet pipe. At this time, the pollutant mixture will be heated to a suitable temperature range when it flows through the No. 1 liquid inlet pipe. By preheating the pollutant mixture to a suitable temperature, the efficiency of subsequent spectral analysis is improved.

[0025] 3) By starting the liquid outlet pump, the liquid in the heat exchange chamber is driven to flow back to the heating box along the liquid outlet pipe. The liquid is circulated along the heat exchange chamber and the heating box by the inlet and outlet pumps, which improves the efficiency of temperature rise.

[0026] 4) The continuously rotating drive fan generates airflow that blows onto the surfaces of multiple heat dissipation fins, carrying away the heat from these fins. One side of the bottom heat exchanger extends into the inner side of the top connecting chamber and comes into contact with the liquid. The heat from the top of the heat exchange sleeve is conducted to the liquid inside the top connecting chamber and then guided to the surface of the heat conduction seat and heat dissipation fins along with the bottom heat exchanger. The rotation of the side drive rod cools the liquid inside the top connecting chamber and the top of the heat exchange sleeve, keeping the liquid inside the No. 1 liquid inlet pipe within a suitable range and improving the temperature control effect. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the front appearance structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the rear appearance structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the regulating box structure of the present invention;

[0031] Figure 4 This is a schematic diagram of the top connecting compartment structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the heating chamber structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the liquid inlet pipe structure of the present invention;

[0034] Figure 7 This is a schematic diagram of the transmission fan structure of the present invention;

[0035] Figure 8 This is a schematic diagram of the centrifuge cylinder structure of the present invention;

[0036] Figure 9 This is a schematic diagram of the filter cartridge structure of the present invention;

[0037] Figure 10 This is a schematic diagram of the connection structure between the heat exchange chamber and the heat exchange sleeve of the present invention.

[0038] In the diagram: 101. External sampling pipe; 102. Inlet pipe No. 1; 103. Inlet pump No. 1; 104. Inlet pipe No. 2; 105. Inlet pump No. 2; 106. Spectrometer analyzer; 201. Bottom support; 202. Regulating box; 203. Heat exchanger jacket; 204. Temperature exchange chamber; 205. Inlet pipe; 206. Inlet pump; 207. Outlet pipe; 208. Outlet pump; 209. Heating chamber; 2010. Electrical controller; 2011. Heating rod; 2012. Connection port; 301. Top connection chamber; 302. Bottom heat exchanger... 303. Heat sink; 304. Heat dissipation fins; 305. Top mounting bracket; 306. Arc-shaped bracket; 307. Filter screen; 308. Connecting hole; 309. Motor body; 3010. Side transmission rod; 3011. Transmission fan; 401. Main gear sleeve; 402. Transmission toothed belt; 403. Secondary gear sleeve; 404. Top bearing plate; 405. Top transmission rod; 406. Bottom connecting plate; 407. Centrifuge cylinder; 408. Filter cylinder; 409. Side support frame; 4010. Top support frame; 4011. Solenoid valve. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Embodiment 1

[0040] In this embodiment, by Figures 1-9 The present invention provides the following technical solution:

[0041] An in-situ analysis device and method for organic pollutants in water using an integrated miniature spectrometer includes an external sampling tube 101. A bottom connecting plate 406 is fixedly connected to one side of the external sampling tube 101. A centrifuge cylinder 407 is fixedly connected to one side of the bottom connecting plate 406. A side support frame 409 is fixedly connected to one side of the centrifuge cylinder 407. A first inlet pipe 102 is fixedly connected to one side of the first inlet pipe 102. A solenoid valve 4011 is fixedly connected to one side of the first inlet pipe 102. A first inlet pump 103 is fixedly connected to the surface of the first inlet pipe 102. A heat exchanger is fixedly connected to one side of the first inlet pipe 102. A heat exchange sleeve 203 (the heat exchange sleeve 203 is fitted on the outer surface of the first liquid inlet pipe 102 and makes thermal contact with the first liquid inlet pipe 102) is fixedly connected to a second liquid inlet pipe 104 on one side of the heat exchange sleeve 203. A second liquid inlet pump 105 is fixedly connected to one side of the second liquid inlet pipe 104. A spectrometer analyzer 106 is fixedly connected to one end of the second liquid inlet pipe 104. The spectrometer analyzer 106 is equipped with a flow-through colorimetric cell. The end of the second liquid inlet pipe 104 is sealed to the sample inlet of the colorimetric cell through a quick-connect fitting. After the water sample is spectrally detected in the colorimetric cell, it is discharged from the sample outlet. A bottom support base 201 is fixedly connected to the bottom of the spectrometer analyzer 106; an adjustment box 202 is fixedly connected to one side of the spectrometer analyzer 106, a heating box 209 is fixedly connected to one side of the adjustment box 202, an electronic controller 2010 is fixedly connected to one side of the heating box 209, a heating rod 2011 is fixedly connected to one side of the electronic controller 2010, a temperature exchange chamber 204 is fixedly connected to the inside of the adjustment box 202, a liquid inlet pipe 205 is fixedly connected to the top of the temperature exchange chamber 204, a liquid inlet pump 206 is fixedly connected to one side of the liquid inlet pipe 205, a top connection chamber 301 is opened on the top of the adjustment box 202, a heat conduction seat 303 is fixedly connected to the top of the top connection chamber 301, a heat dissipation fin 304 is fixedly connected to the top of the heat conduction seat 303, and a bottom heat exchange plate 302 is fixedly connected to the bottom of the heat conduction seat 303.

[0042] It should be noted that after the liquid is heated, the inlet pump 206 is started. The inlet pump 206 drives the inlet pipe 205 to send the liquid in the heating box 209 into the heat exchange chamber 204. After the heated liquid enters the heat exchange chamber 204, it will come into contact with the surface of the heat exchange sleeve 203. Utilizing the high thermal conductivity of the heat exchange sleeve 203, the temperature of the first inlet pipe 102 is increased. The second inlet pump 105 sends the contaminated mixed liquid in the second inlet pipe 104 into the spectrometer analyzer 106 for spectroscopic analysis.

[0043] In an optional embodiment: a liquid outlet pipe 207 is fixedly connected to the other side of the temperature exchange chamber 204, and a liquid outlet pump 208 is fixedly connected to one side of the liquid outlet pipe 207.

[0044] It should be noted that the liquid in the temperature exchange chamber 204 is driven by the liquid outlet pump 208 to flow back to the heating box 209 along the liquid outlet pipe 207. The liquid is circulated along the temperature exchange chamber 204 and the heating box 209 by the liquid inlet pump 206 and the liquid outlet pump 208.

[0045] In an optional embodiment, there are two heating chambers 209, two electronic controllers 2010, two liquid inlet pipes 205, two liquid inlet pumps 206, two liquid outlet pipes 207 and two liquid outlet pumps 208, and each of the two heating chambers 209 has a connection port 2012 on one side.

[0046] It should be noted that by opening the connection port 2012, the heating rod 2011 can come into contact with the liquid inside the heating box 209, and the heating rod 2011 can be used to heat the heating box 209.

[0047] In an optional embodiment: a top fixing frame 305 is fixedly connected to the top of the regulating box 202, an arc-shaped frame 306 is fixedly connected to the top of the top fixing frame 305, a motor body 309 is fixedly connected to the top of the arc-shaped frame 306, a connecting hole 308 is opened on the surface of the arc-shaped frame 306, a side transmission rod 3010 is fixedly connected to the output shaft of the motor body 309, a transmission fan 3011 is fixedly connected to one side of the side transmission rod 3010, and a filter screen 307 is fixedly connected to the surface of the top fixing frame 305.

[0048] It should be noted that the continuously rotating drive fan 3011 generates airflow that blows onto the surfaces of multiple heat dissipation fins 304 (the continuously rotating drive fan 3011 generates horizontal airflow, which blows directly onto the surfaces of the vertically arranged multiple heat dissipation fins 304. The heat dissipation fins 304 are arranged around or directly opposite the air outlet of the drive fan 3011, and the airflow direction is perpendicular to the extension direction of the heat dissipation fins, so as to remove heat by forced convection). The heat on the surfaces of the multiple heat dissipation fins 304 is removed, and the filter screen 307 on the surface of the top fixing frame 305 filters dust particles in the air, reducing the amount of dust particles adhering to the surface of the heat dissipation fins 304 and improving the heat dissipation effect of the heat dissipation fins 304.

[0049] In an optional embodiment: a main gear sleeve 401 is fixedly sleeved on the surface of the side transmission rod 3010 by key connection or welding; a transmission toothed belt 402 is drivenly connected to the surface of the main gear sleeve 401; a secondary gear sleeve 403 is drivenly connected to one side of the transmission toothed belt 402; a top transmission rod 405 is fixedly connected to one side of the secondary gear sleeve 403; and a filter cylinder 408 is fixedly connected to one end of the top transmission rod 405.

[0050] It should be noted that after the contaminated mixture enters the filter cartridge 408 and the centrifuge cartridge 407, the continuously rotating filter cartridge 408 will send the liquid out to the inner wall of the centrifuge cartridge 407. Larger particulate impurities will pass through the filter cartridge 408. The rotating main gear sleeve 401 will drive the transmission toothed belt 402 to rotate synchronously. The rotating transmission toothed belt 402 will drive the auxiliary gear sleeve 403 on the other side to rotate synchronously. The rotating auxiliary gear sleeve 403 will drive the top transmission rod 405 to rotate. The rotating auxiliary gear sleeve 403 will drive the top transmission rod 405 to rotate. The rotating top transmission rod 405 will drive the filter cartridge 408 to rotate along the inner side of the centrifuge cartridge 407.

[0051] In an optional embodiment: a top support frame 4010 is fixedly connected to the top of the bottom connecting plate 406, a top bearing disk 404 is fixedly connected to the inner side of the top support frame 4010, and one side of the top bearing disk 404 is fixedly connected to the top of the auxiliary gear sleeve 403.

[0052] It should be noted that when the secondary gear sleeve 403 rotates, it is supported on the inner side of the top support frame 4010 by the top bearing plate 404. The movable support of the top bearing plate 404 improves the stability of the rotation of the secondary gear sleeve 403.

[0053] In an optional embodiment: there are two heat exchange chambers 204, and both heat exchange chambers 204 are fixedly connected along both sides of the heat exchange sleeve 203, and the material of the heat exchange chambers 204 is insulation material.

[0054] It should be noted that the insulation material of the heat exchange chamber 204 reduces the loss of temperature inside the heat exchange chamber 204. With the high insulation properties of the heat exchange chamber 204, the temperature stability can be improved when the liquid inside the top connecting chamber 301 is cooled by the rotation of the side transmission rod 3010 and the top of the heat exchange sleeve 203, or when the heating rod 2011 is heated by the electric controller 2010.

[0055] In an optional embodiment, the inner sides of both the heat exchange chamber 204 and the top connecting chamber 301 are filled with a highly thermally conductive liquid (e.g., water or heat transfer oil). This liquid is injected through a pre-drilled injection port and then sealed. A high-temperature resistant sealing ring is provided at the joint between the heat exchange sleeve 203 and the heat exchange chamber 204, and the heat exchange chamber 204 and the top connecting chamber 301 are welded together to form an integral sealing structure, preventing liquid leakage to the outside. Figure 10 This is a schematic diagram of the connection structure between the heat exchange chamber 204 and the heat exchange sleeve 203 of the present invention. It can be seen that the heat exchange chamber 204 on one side is a cavity formed by two connected cuboids with different cross-sectional widths. The cuboids near the heat exchange sleeve 203 narrow (the cross-section of the heat exchange chamber 204 on one side is shaped like an overturned water bottle), and the opening faces the heat exchange sleeve 203.

[0056] It should be noted that by activating the two electronic controllers 2010, connecting the electronic controllers 2010 to an external power source, and using the electronic controllers 2010 to drive the heating rod 2011 to heat up, the heating rod 2011, after passing through the connection port 2012, will increase the temperature of the liquid in the heating chamber 209, and the high thermal conductivity of the liquid will increase the heating rate.

[0057] In an optional embodiment, the surface of the filter cartridge 408 is provided with a plurality of holes (e.g., 0.1mm-0.5mm).

[0058] In this invention, the centrifuge cylinder 407 and the filter cylinder 408 are coaxially arranged, and the filter cylinder 408 is connected to the motor body 309 through the top transmission rod 405 and the auxiliary gear sleeve rod 403. The motor body 309 simultaneously drives the filter cylinder 408 and the transmission fan 3011 of the cooling fan.

[0059] It should be noted that by utilizing the numerous pores on the surface of the filter cartridge 408, the continuously rotating filter cartridge 408 will send the liquid out to the inner wall of the centrifuge cartridge 407, while larger particulate impurities will pass through the filter cartridge 408, thus improving the accuracy of subsequent spectral analysis.

[0060] It should be noted that the aforementioned heat exchange chamber 204 is connected to the heating box 209 via a liquid inlet pipe 205, and a liquid inlet pump 206 is provided on the liquid inlet pipe 205; the heat exchange chamber 204 is also connected to the heating box 209 via a liquid outlet pipe 207, and a liquid outlet pump 208 is provided on the liquid outlet pipe 207; the circulating heat exchange structure formed by the heat exchange sleeve 203, the heat exchange chamber 204 and the heating box 209 adopted in this application is fundamentally different from the common methods in the prior art, such as directly winding heating wires around heating pipes or tightly attaching semiconductor cooling chips to pipes.

[0061] Existing direct heating methods are prone to local overheating, which can cause denaturation of organic matter in water samples or the formation of bubbles, affecting the accuracy of spectral analysis. Meanwhile, semiconductor cooling chips have a narrow temperature control range and low energy efficiency, making it difficult to meet the needs of rapid adjustment over a wide temperature range.

[0062] This application utilizes a highly thermally conductive liquid (such as water or thermal oil) as an intermediate medium to achieve large-area, non-contact heat exchange with the heat exchange sleeve 203 within the heat exchange chamber 204. Simultaneously, the inlet pump 206 and outlet pump 208 drive the liquid to continuously circulate between the heating chamber 209 and the heat exchange chamber 204, ensuring a uniform and stable temperature field on the outer surface of the heat exchange sleeve 203 and avoiding localized high or low temperature dead zones. This is particularly suitable for temperature-sensitive spectral analysis pretreatment, enabling gentle, efficient, and uniform temperature control under flowing conditions.

[0063] Furthermore, this application integrates a heating system (heating chamber 209, heating rod 2011, liquid inlet pump 206, heat exchange chamber 204) and a heat dissipation system (top connecting chamber 301, bottom heat exchange fins 302, heat conduction base 303, heat dissipation fins 304, drive fan 3011) within the same device. The two systems share the same core heat exchange element—the heat exchange sleeve 203. When heating is required, the heating system and circulation pump are activated; when cooling is required, heating is stopped and the air-cooling system is activated. Heat is conducted from the heat exchange sleeve 203 through the liquid in the top connecting chamber 301 to the heat dissipation fins 304, and then forced to cool by the drive fan 3011.

[0064] This "dual-system shared core heat exchange element" design is not simply a matter of piling up heating and cooling components. Instead, it cleverly connects two independent heat exchange loops (one for heating and one for cooling) through the arrangement of the heat exchange sleeve 203, achieving "one-pipe bidirectional temperature control." Compared to solutions that separately set up heating and cooling sections, this device is more compact, has shorter piping, and faster temperature switching response, overcoming the technical prejudice that "the superposition of heating and cooling functions inevitably leads to a large and inefficient device."

[0065] Example 2

[0066] This embodiment 2 provides an in-situ analysis device and method for organic pollutants in water using an integrated miniature spectrometer, which is used to further explain the working process or principle of the in-situ analysis device and method for organic pollutants in water using an integrated miniature spectrometer provided in embodiment 1 above. The specific details are as follows:

[0067] An in-situ analysis device and method for organic pollutants in water using an integrated micro spectrometer, comprising the following steps:

[0068] S1. First, the externally collected contaminated mixture is sent into the centrifuge cylinder 407 through the external collection tube 101. At this time, the motor body 309 is started, and the motor body 309 drives the side transmission rod 3010 to rotate. The rotating side transmission rod 3010 will drive the main gear sleeve 401 to rotate. The rotating main gear sleeve 401 will drive the transmission toothed belt 402 to rotate synchronously. The rotating transmission toothed belt 402 will drive the auxiliary gear sleeve 403 on the other side to rotate synchronously. The rotating auxiliary gear sleeve 403 will drive the top transmission rod 405 to rotate. 03 will drive the top drive rod 405 to rotate. The rotating top drive rod 405 will drive the filter cylinder 408 to rotate along the inner side of the centrifuge cylinder 407. After the contaminated mixture enters the filter cylinder 408 and the centrifuge cylinder 407, the continuously rotating filter cylinder 408 will send the liquid out to the inner wall of the centrifuge cylinder 407. Larger particulate impurities will pass through the barrier of the filter cylinder 408 and remain inside the filter cylinder 408 for filtration. By rotating to filter the contaminated mixture, more impurity particles will be reduced to reduce the impact on subsequent analysis and improve the accuracy of subsequent spectral analysis detection.

[0069] S2. By activating solenoid valve 4011, the first inlet pipe 102 is opened. The filtered mixture then flows along centrifuge cylinder 407 into the first inlet pipe 102. At this point, motor body 309 is shut off, and two electronic controllers 2010 are activated. These controllers are connected to an external power source, and the heating rod 2011 is driven to heat the liquid. The heating rod 2011, passing through connection port 2012, raises the temperature of the liquid in heating chamber 209. After the liquid heats up... Start the inlet pump 206, which drives the inlet pipe 205 to send the liquid in the heating box 209 into the heat exchange chamber 204. After the heated liquid enters the heat exchange chamber 204, it will come into contact with the surface of the heat exchange sleeve 203. Utilizing the high thermal conductivity of the heat exchange sleeve 203, the temperature of the first inlet pipe 102 is raised. At this time, the polluted mixture will be heated to a suitable temperature range when it flows through the first inlet pipe 102. By preheating the polluted mixture to a suitable temperature, the efficiency of subsequent spectral analysis is improved.

[0070] S3. After the inlet pump 206 delivers the heated liquid into the temperature exchange chamber 204, the outlet pump 208 is activated. The outlet pump 208 drives the liquid in the temperature exchange chamber 204 to flow back into the heating box 209 along the outlet pipe 207. One-way valves are installed on the inlet pipe 205 and the outlet pipe 207 to prevent backflow of the liquid when the pump stops. The liquid is circulated within the temperature exchange chamber 204 and the heating box 209 by the inlet pump 206 and the outlet pump 208, improving the efficiency of temperature rise.

[0071] A temperature sensor (not shown in the figure) is installed inside the first liquid inlet pipe 102, and this temperature sensor is connected to the electronic controller 2010. Based on the water sample temperature fed back by the temperature sensor, the electronic controller 2010 automatically starts the motor body 309 for air cooling when the detected temperature is higher than the upper limit of the target temperature; and automatically starts the heating rod 2011 and the liquid inlet pump 206 for heating when the detected temperature is lower than the lower limit of the target temperature. This achieves closed-loop automatic temperature control.

[0072] S4. Simultaneously, if it is necessary to cool down the liquid in the No. 1 liquid inlet pipe 102 or the liquid in the heating box 209, first start the motor body 309, and use the motor body 309 to drive the side transmission rod 3010 to rotate. The rotating side transmission rod 3010 will drive the transmission fan 3011 to rotate. The continuously rotating transmission fan 3011 will generate wind to blow onto the surface of multiple heat dissipation fins 304, taking away the heat from the surface of multiple heat dissipation fins 304. One side of the bottom heat exchange plate 302 extends into the inside of the top connecting chamber 301 and contacts the liquid. The heat from the top of the heat exchange sleeve 203 will be conducted to the liquid inside the top connecting chamber 301, and guided into the surface of the heat conduction seat 303 and the heat dissipation fins 304 along with the bottom heat exchange plate 302. The rotation of the side transmission rod 3010 cools down the liquid inside the top connecting chamber 301 and the top of the heat exchange sleeve 203, keeping the liquid inside the No. 1 liquid inlet pipe 102 within a suitable range, thus improving the temperature control effect.

[0073] S5. After the temperature is adjusted by the first inlet pipe 102, the polluted mixture will flow into the inside of the second inlet pipe 104 and start the second inlet pump 105. By starting the second inlet pump 105, the polluted mixture in the second inlet pipe 104 will be sent into the spectrometer analyzer 106 for spectroscopic analysis.

[0074] Experiment 1: Comparison of heating / cooling times for water samples with different initial temperatures

[0075] Using the apparatus described in Example 1 of this application, a 100 mL water sample containing organic pollutant (Rhodamine B, concentration 1 mg / L) was used as the test object. The initial temperatures were set to 5°C (simulating low-temperature river water in winter), 15°C (room temperature), and 30°C (high-temperature drainage in summer). The heating or cooling system was started to allow the water sample to reach the target temperature of 25°C after flowing through the heat exchange tube (203). The time required was recorded.

[0076] The results are shown in Table 1:

[0077] ;

[0078] As shown in the table above, this device can rapidly adjust water samples with different initial temperatures to the temperature required for spectral analysis within 6 to 12 seconds, while the traditional constant temperature chamber method requires 240 to 360 seconds. The temperature control efficiency of this device is improved by approximately 30 to 60 times, significantly shortening the preparation time before analysis and achieving true in-situ real-time detection.

[0079] Experiment 2: The effect of filtration and temperature control on the accuracy of spectral analysis

[0080] Take the same polluted water sample (containing 1 mg / L methyl orange and mixed with silt particles with a diameter of 0.1–0.5 mm), and treat it using the following two methods respectively. Then, perform ultraviolet-visible absorption spectroscopy detection using the same spectrometer analyzer 106: (A) without any pretreatment, directly sent to the spectrometer; (B) after centrifugation and filtration (filter cartridge 408) and temperature adjustment (controlled to 25℃) by this device. Record the intensity of the characteristic absorption peak (464 nm), the signal-to-noise ratio (SNR), and the limit of quantitation (LOQ).

[0081] Results: The characteristic peak intensity of Method B was 22% higher than that of Method A; the signal-to-noise ratio (SNR) increased from 18.5 in Method A to 31.2 in Method B, an improvement of approximately 69%; and the limit of quantitation (LOQ) decreased from 0.15 mg / L to 0.05 mg / L. This indicates that the filtration and temperature control modules of this device effectively remove particulate interference, stabilize the spectral response, and significantly improve detection accuracy.

[0082] This device has been specifically optimized for in-situ field analysis scenarios.

[0083] Thanks to its online flow heat exchange structure, the time from water sample collection to entry into the spectrometer can be controlled within 30 seconds, much faster than traditional methods (which typically take more than 5 minutes), reducing the detection and response time of pollution incidents by more than 70%. In field conditions with low temperatures in winter (0℃~10℃) or high temperatures in summer (30℃~40℃), this device can quickly stabilize water samples to the spectrometer's optimal operating temperature range (20℃~30℃) through active heating or forced air cooling, avoiding measurement drift caused by drastic fluctuations in ambient temperature. The overall power consumption is less than 50W, and it can be powered by a 12V battery. It is lightweight and compact, making it easy for a single person to quickly deploy it at riverbanks, sewage outlets, and other sites. The centrifuge cylinder, filter cylinder, heat exchange sleeve, and all pumps and valves are rigidly fixed, and the transmission stability is enhanced by structures such as the top bearing plate, adapting to the vibration environment during field transportation and operation.

[0084] This device boasts a compact overall structure, integrating components such as the external sampling tube, centrifuge cylinder, heat exchange sleeve, and spectrometer within a frame comprised of a base support and adjustment box. Its dimensions are controlled to within 40cm × 30cm × 20cm, and its total weight is less than 8kg. All drive components (motor, inlet pump, outlet pump, and controller) utilize low-power devices. The filter cylinder, heat exchange sleeve, and pumps and valves are rigidly fixed and vibration-damped, capable of withstanding vibrations during vehicle transport and handheld operation. This design allows the device to truly operate outside of laboratory environments, completing the entire "sampling-filtration-temperature control-analysis" process in field settings such as sewage outlets, river sections, and drinking water sources, achieving in-situ real-time monitoring with a response time of up to seconds.

[0085] It should be noted that: all parts not described in detail in this invention are existing technologies, and the corresponding models can be selected according to actual needs. The internal structure and operating principle of the above parts are also common knowledge to those skilled in the art, and will not be elaborated on further.

[0086] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An in-situ analysis device for organic pollutants in water with an integrated miniature spectrometer, comprising an external acquisition tube (101), characterized in that: A bottom connecting plate (406) is fixedly connected to one side of the external collection tube (101), a centrifuge tube (407) is fixedly connected to one side of the bottom connecting plate (406), a side support frame (409) is fixedly connected to one side of the centrifuge tube (407), and a first inlet tube (102) is fixedly connected to one side of the centrifuge tube (407). The first liquid inlet pipe (102) is provided with a solenoid valve (4011) and a first liquid inlet pump (103) in sequence along the liquid flow direction. A heat exchange sleeve (203) is fixedly connected to one side of the first liquid inlet pipe (102). A second liquid inlet pipe (104) is fixedly connected to one side of the heat exchange sleeve (203). A second liquid inlet pump (105) is fixedly connected to one side of the second liquid inlet pipe (104). A spectrometer analyzer (106) is fixedly connected to one end of the second liquid inlet pipe (104). A bottom support base (201) is fixedly connected to the bottom of the spectrometer analyzer (106). A regulating box (202) is fixedly connected to one side of the spectrometer analyzer (106). A heating box (209) is fixedly connected to one side of the regulating box (202). An electric controller (2010) is fixedly connected to one side of the heating box (209). A heating rod (2011) is fixedly connected to one side of the electric controller (2010). A temperature exchange chamber (204) is fixedly connected to the inside of the regulating box (202). An inlet pipe (205) is fixedly connected to the top of the temperature exchange chamber (204). An inlet pump (206) is fixedly connected to one side of the inlet pipe (205). A top connection chamber (301) is opened on the top of the regulating box (202). A heat-conducting seat (303) is fixedly connected to the top of the top connection chamber (301). A heat dissipation fin (304) is fixedly connected to the top of the heat-conducting seat (303). A bottom heat exchange plate (302) is fixedly connected to the bottom of the heat-conducting seat (303).

2. The in-situ analysis device for organic pollutants in water using an integrated micro spectrometer according to claim 1, characterized in that: A liquid outlet pipe (207) is fixedly connected to the other side of the temperature exchange chamber (204), and a liquid outlet pump (208) is fixedly connected to one side of the liquid outlet pipe (207).

3. The in-situ analysis device for organic pollutants in water using an integrated micro spectrometer according to claim 2, characterized in that: The number of heating chamber (209), electrical controller (2010), liquid inlet pipe (205), liquid inlet pump (206), liquid outlet pipe (207) and liquid outlet pump (208) are all two, and each of the two heating chambers (209) has a connection port (2012) on one side.

4. The in-situ analysis device for organic pollutants in water using an integrated micro spectrometer according to claim 3, characterized in that: The top of the regulating box (202) is fixedly connected to a top fixing frame (305), the top of the top fixing frame (305) is fixedly connected to an arc-shaped frame (306), the top of the arc-shaped frame (306) is fixedly connected to a motor body (309), the surface of the arc-shaped frame (306) is provided with a connecting hole (308), the output shaft of the motor body (309) is fixedly connected to a side transmission rod (3010), one side of the side transmission rod (3010) is fixedly connected to a transmission fan (3011), and the surface of the top fixing frame (305) is fixedly connected to a filter screen (307).

5. The in-situ analysis device for organic pollutants in water using an integrated micro spectrometer according to claim 4, characterized in that: The side transmission rod (3010) is fixedly sleeved with a main gear sleeve (401), and the main gear sleeve (401) is connected to a transmission belt (402). One side of the transmission belt (402) is connected to a secondary gear sleeve (403), and one side of the secondary gear sleeve (403) is fixedly connected to a top transmission rod (405). One end of the top transmission rod (405) is fixedly connected to a filter cylinder (408).

6. The in-situ analysis device for organic pollutants in water using an integrated micro spectrometer according to claim 5, characterized in that: The top of the bottom connecting plate (406) is fixedly connected to a top support frame (4010), and the inner side of the top support frame (4010) is fixedly connected to a top bearing disk (404). One side of the top bearing disk (404) is fixedly connected to the top of the auxiliary gear sleeve (403).

7. The in-situ analysis device for organic pollutants in water using an integrated micro spectrometer according to claim 6, characterized in that: The number of the heat exchange chambers (204) is two, and both heat exchange chambers (204) are fixedly connected along both sides of the heat exchange sleeve (203), and the material of the heat exchange chambers (204) is heat insulation material.

8. The in-situ analysis device for organic pollutants in water using an integrated micro spectrometer according to claim 7, characterized in that: The inner side of the heat exchange chamber (204) and the inner side of the top connecting chamber (301) are both filled with a liquid with high thermal conductivity.

9. The in-situ analysis device for organic pollutants in water using an integrated micro spectrometer according to claim 8, characterized in that: The surface of the filter cartridge (408) has multiple holes.

10. A method of using an integrated micro-spectrometer for in-situ analysis of organic pollutants in water, applied in any one of claims 1-9, characterized in that, Includes the following steps: S1. The externally collected contaminated mixture is sent into the centrifuge tube (407) through the external collection tube (101). At this time, the motor body (309) is started, and the motor body (309) drives the side transmission rod (3010) to rotate. The rotating side transmission rod (3010) will drive the main gear sleeve (401) to rotate. The rotating main gear sleeve (401) will drive the auxiliary gear sleeve (403) on the other side to rotate synchronously. The rotating auxiliary gear sleeve (403) will... The top drive rod (405) is driven to rotate. The rotating top drive rod (405) will drive the filter cylinder (408) to rotate along the inner side of the centrifuge cylinder (407). After the polluted mixture enters the filter cylinder (408) and the centrifuge cylinder (407), the continuously rotating filter cylinder (408) will send the liquid out to the inner wall of the centrifuge cylinder (407), while larger particulate impurities will pass through the barrier of the filter cylinder (408) and remain inside the filter cylinder (408) for filtration. S2. By activating the solenoid valve (4011), the first inlet pipe (102) is opened using the solenoid valve (4011). The filtered mixture will flow into the first inlet pipe (102) along the centrifuge cylinder (407). At this time, the motor body (309) is turned off, and the two electronic controllers (2010) are activated. By connecting the electronic controllers (2010) to an external power source, the heating rod (2011) is driven to heat up. After the heating rod (2011) passes through the inside of the connection port (2012), the temperature of the liquid in the heating box (209) will be increased. By utilizing the high thermal conductivity of the heat exchange sleeve (203), the temperature of the first inlet pipe (102) will be increased. At this time, the polluted mixture will be heated to a suitable temperature range when it flows through the inside of the first inlet pipe (102). S3. After the inlet pump (206) sends the heated liquid into the heat exchange chamber (204), the outlet pump (208) is started, and the liquid in the heat exchange chamber (204) is driven by the outlet pump (208) to flow back into the heating box (209) along the outlet pipe (207). The liquid is circulated in the heat exchange chamber (204) and the heating box (209) by the drive of the inlet pump (206) and the outlet pump (208). S4. If it is necessary to cool down the liquid in the No. 1 liquid inlet pipe (102) or the liquid in the heating box (209), the motor body (309) is started, and the motor body (309) drives the side transmission rod (3010) to rotate. The rotating side transmission rod (3010) will drive the transmission fan (3011) to rotate. The continuously rotating transmission fan (3011) will generate wind force to blow onto the surface of multiple heat dissipation fins (304), thus cooling the multiple heat dissipation fins (304). The heat from the surface is carried away, and one side of the bottom heat exchange plate (302) extends into the inside of the top connecting chamber (301) and comes into contact with the liquid. The heat at the top of the heat exchange sleeve (203) is conducted to the liquid inside the top connecting chamber (301) and is introduced into the surface of the heat conduction seat (303) and heat dissipation fins (304) by the bottom heat exchange plate (302). The rotation of the side transmission rod (3010) cools the liquid inside the top connecting chamber (301) and the top of the heat exchange sleeve (203). S5. After the temperature is adjusted by the No. 1 inlet pipe (102), the polluted mixture will flow into the inside of the No. 2 inlet pipe (104) and start the No. 2 inlet pump (105). By starting the No. 2 inlet pump (105), the polluted mixture in the No. 2 inlet pipe (104) will be sent into the spectrometer analyzer (106) for spectral analysis.

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